Univest Financial (UVSP) 10-K 26 Feb 21 2020 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2020	Feb. 12, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity File Number	0-7617
Entity Central Index Key	0000102212
Entity Registrant Name	UNIVEST FINANCIAL CORPORATION
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	23-1886144
Entity Address, Address Line One	14 North Main Street
Entity Address, City or Town	Souderton
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	18964
City Area Code	215
Local Phone Number	721-2400
Title of 12(b) Security	Common Stock, $5 par value
Trading Symbol	UVSP
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
ICFR Auditor Attestation Flag	true
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 462,333,150
Amendment Flag	false
Document Transition Report	false
Entity Common Stock, Shares Outstanding		29,317,550
Document Annual Report	true

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Cash and due from banks	$ 62,555	$ 50,571
Interest-earning deposits with other banks	157,303	74,557
Cash and cash equivalents	219,858	125,128
Investment securities held-to-maturity (fair value $156,325 and $194,886 at December 31, 2020 and 2019, respectively)	151,257	192,052
Investment securities available-for-sale (amortized cost $221,254 and $251,014, net of allowance for credit losses of $869 and $— at December 31, 2020 and 2019, respectively)	218,640	246,924
Investments in equity securities	3,279	2,623
Federal Home Loan Bank, Federal Reserve Bank and other stock, at cost	28,183	28,254
Loans held for sale	37,039	5,504
Loans and leases held for investment	5,306,841	4,386,836
Allowance for credit losses, loans and leases	83,044	35,331
Net loans and leases held for investment	5,223,797	4,351,505
Premises and equipment, net	55,636	56,676
Operating lease right-of-use asset	34,325	34,418
Goodwill	172,559	172,559
Other intangibles, net of accumulated amortization	8,866	10,284
Bank owned life insurance	117,718	114,778
Accrued interest receivable and other assets	65,339	40,219
Total assets	6,336,496	5,380,924
LIABILITIES
Noninterest-bearing deposits	1,690,663	1,279,681
Interest-bearing deposits:
Demand deposits	2,070,183	1,677,682
Savings deposits	918,094	796,702
Time deposits	563,775	606,010
Total deposits	5,242,715	4,360,075
Short-term borrowings	17,906	18,680
Long-term debt	110,000	150,098
Subordinated notes	183,515	94,818
Operating lease liabilities	37,690	37,617
Accrued interest payable and other liabilities	52,198	44,514
Total liabilities	5,644,024	4,705,802
SHAREHOLDERS' EQUITY
Common stock, $5 par value: 48,000,000 shares authorized at December 31, 2020 and 2019; 31,556,799 shares issued at December 31, 2020 and 2019; 29,295,052 and 29,334,629 shares outstanding at December 31, 2020 and 2019, respectively	157,784	157,784
Additional paid-in capital	296,186	294,999
Retained earnings	306,899	288,803
Accumulated other comprehensive loss, net of tax benefit	(22,144)	(21,730)
Treasury stock, at cost; 2,261,747 and 2,222,170 shares at December 31, 2020 and 2019, respectively	(46,253)	(44,734)
Total shareholders' equity	692,472	675,122
Total liabilities and shareholders' equity	$ 6,336,496	$ 5,380,924

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Securities held-to-maturity, fair value	$ 156,325	$ 194,886
Securities, available-for-sale, amortized cost	221,254	$ 251,014
Securities, available-for-sale, allowance for credit loss	$ 869
Common stock, par value	$ 5	$ 5
Common stock, shares authorized	48,000,000	48,000,000
Common stock, shares issued	31,556,799	31,556,799
Common stock, shares outstanding	29,295,052	29,334,629
Treasury stock, shares	2,261,747	2,222,170

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest and fees on loans and leases:
Taxable		$ 183,568	$ 186,041	$ 166,304
Exempt from federal income taxes		9,537	10,942	9,889
Total interest and fees on loans and leases		193,105	196,983	176,193
Interest and dividends on investment securities:
Taxable		7,842	10,660	9,388
Exempt from federal income taxes		678	1,420	1,841
Interest on deposits with other banks		574	2,876	1,101
Interest and dividends on other earning assets		1,746	2,154	1,965
Total interest income		203,945	214,093	190,488
Interest expense
Interest on demand deposits		7,724	18,633	11,061
Interest on savings deposits		2,057	3,660	2,357
Interest on time deposits		9,835	13,276	8,768
Interest on short-term borrowings		327	1,012	2,420
Interest on long-term debt		9,641	8,280	7,820
Total interest expense		29,584	44,861	32,426
Net interest income	[1]	174,361	169,232	158,062
Provision for credit losses		40,794	8,511	20,310
Net interest income after provision for credit losses		133,567	160,721	137,752
Disaggregation of Revenue [Line Items]
Insurance commission and fee income		16,087	16,571	15,658
Bank owned life insurance income	[1]	2,940	3,179	3,174
Net gain on sales of investment securities	[1]	871	54	10
Net gain on mortgage banking activities	[1]	16,442	3,946	3,125
Other income	[2]	5,953	2,619	262
Total noninterest income		78,328	65,422	60,173
Noninterest expense
Salaries, benefits and commissions		93,208	88,289	80,488
Net occupancy		10,358	10,221	10,260
Equipment		3,841	4,170	4,146
Data processing		11,333	10,450	9,014
Professional fees		5,338	5,563	5,391
Marketing and advertising		1,975	2,594	2,642
Deposit insurance premiums		2,591	780	1,836
Intangible expenses		1,216	1,595	2,166
Restructuring charges		1,439	0	571
Other expense		23,699	22,428	20,725
Total noninterest expense		154,998	146,090	137,239
Income before income taxes		56,897	80,053	60,686
Income tax expense		9,981	14,334	10,143
Net income		$ 46,916	$ 65,719	$ 50,543
Net income per share:
Basic (in dollars per share)		$ 1.60	$ 2.24	$ 1.72
Diluted (in dollars per share)		$ 1.60	$ 2.24	$ 1.72
Trust fee income
Disaggregation of Revenue [Line Items]
Noninterest income		$ 7,703	$ 7,826	$ 7,882
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Noninterest income		4,845	5,946	5,632
Investment advisory commission and fee income
Disaggregation of Revenue [Line Items]
Noninterest income		15,944	15,940	15,098
Other service fee income
Disaggregation of Revenue [Line Items]
Noninterest income	[2]	$ 7,543	$ 9,341	$ 9,332
[1]	Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of FASB ASC 606 "Revenue from Contracts with Customers" (FASB ASC 606). Noninterest income streams that are out of scope of FASB ASC 606 include bank owned life insurance income, sales of investment securities and mortgage banking activities.
[2]	Other service fee income and other income include certain items that are in scope and certain items that are out of scope of FASB ASC 606 are described further in the following paragraphs.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Income before income taxes		$ 56,897	$ 80,053	$ 60,686
Net unrealized gains (losses) on available-for-sale investment securities, before tax amount
Net unrealized holding gains (losses) arising during the period, before tax amount		2,346	10,168	(7,280)
Provision for credit losses, before tax		569	0	0
Less: reclassification adjustment for net gains on sales realized in net income, before tax amount	[1]	(871)	(54)	(10)
Total net unrealized gains (losses) on available-for-sale investment securities, before tax amount		2,044	10,114	(7,290)
Cash flow hedge derivative, before tax amount
Net change in fair value of interest rate swap, before tax amount		(553)	(420)	74
Less: reclassification adjustment for loss on termination of interest rate swap realized in net income, before tax amount	[2]	254	(22)	15
Total cash flow hedge derivative, before tax amount		(299)	(442)	89
Defined benefit pension plans, before tax amount
Net unrealized (losses) gains arising during the period, before tax amount		(3,772)	(2,308)	(1,603)
Less: amortization of net actuarial loss included in net periodic pension costs, before tax amount	[3]	1,202	1,176	1,124
Less: accretion of prior service cost included in net periodic pension costs, before tax amount	[3]	0	(181)	(283)
Total defined benefit pension plans, before tax amount		(2,570)	(1,313)	(762)
Other comprehensive income (loss), before tax amount		(825)	8,359	(7,963)
Total comprehensive income (loss), before tax amount		56,072	88,412	52,723
Income tax expense		9,981	14,334	10,143
Net unrealized gains (losses) on available-for-sale investment securities, tax expense (benefit)
Net unrealized holding gains (losses) arising during the period, tax expense (benefit)		493	2,135	(1,529)
Provision for credit losses, tax expense (benefit)		119	0	0
Less: reclassification adjustment for net gains on sales realized in net income, tax expense (benefit)	[1]	(183)	(11)	(2)
Total net unrealized gains (losses) on available-for-sale investment securities, tax expense (benefit)		429	2,124	(1,531)
Cash flow hedge derivative, tax expense (benefit)
Net change in fair value of interest rate swap, tax expense (benefit)		(116)	(88)	16
Less: reclassification adjustment for loss on termination of interest rate swap realized in net income, tax expense (benefit)	[2]	53	(5)	3
Total cash flow hedge derivative, tax expense (benefit)		(63)	(93)	19
Defined benefit pension plans, tax expense (benefit)
Net unrealized (losses) gains arising during the period, tax expense (benefit)		(792)	(485)	(337)
Less: amortization of net actuarial loss included in net periodic pension costs, tax expense (benefit)	[3]	252	248	236
Less: accretion of prior service cost included in net periodic pension costs, tax expense (benefit)	[3]	0	(38)	(59)
Total defined benefit pension plans, tax expense (benefit)		(540)	(275)	(160)
Other comprehensive income (loss), tax expense (benefit)		(174)	1,756	(1,672)
Total comprehensive income (loss), tax expense (benefit)		9,807	16,090	8,471
Net income		46,916	65,719	50,543
Net unrealized gains (losses) on available-for-sale investment securities, net of tax amount
Net unrealized holding gains (losses) arising during the period, net of tax amount		1,853	8,033	(5,751)
Provision for credit losses, net of tax		450	0	0
Less: reclassification adjustment for net gains on sales realized in net income, net of tax amount	[1]	(688)	(43)	(8)
Total net unrealized gains (losses) on available-for-sale investment securities, net of tax amount		1,615	7,990	(5,759)
Cash flow hedge derivative, net of tax amount
Net change in fair value of interest rate swap, net of tax amount		(437)	(332)	58
Less: reclassification adjustment for loss on termination of interest rate swap realized in net income, net of tax amount	[2]	201	(17)	12
Total cash flow hedge derivative, net of tax amount		(236)	(349)	70
Defined benefit pension plans, net of tax amount
Net unrealized (losses) gains arising during the period, net of tax amount		(2,980)	(1,823)	(1,266)
Less: amortization of net actuarial loss included in net periodic pension costs, net of tax amount	[3]	950	928	888
Less: accretion of prior service cost included in net periodic pension costs, net of tax amount	[3]	0	(143)	(224)
Total defined benefit pension plans, net of tax amount		(2,030)	(1,038)	(602)
Other comprehensive income (loss), net of tax amount		(651)	6,603	(6,291)
Total comprehensive income (loss), net of tax amount		$ 46,265	$ 72,322	$ 44,252
[1]	(1) Included in net gain on sales of investment securities on the consolidated statements of income (before tax amount).
[2]	(2) Included in interest expense on demand deposits on the consolidated statements of income (before tax amount).
[3]	(3) These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost (before tax amount). See Note 12, "Retirement Plans and Other Postretirement Benefits" for additional details.

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Common Stock [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member]	Retained Earnings [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]		Accumulated Other Comprehensive (Loss) Income [Member]	Accumulated Other Comprehensive (Loss) Income [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]		Treasury Stock [Member]	Treasury Stock [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning balance at Dec. 31, 2017	$ 603,374		$ 157,784		$ 290,133		$ 216,761			$ (17,771)			$ (43,533)
Beginning balance (Accounting Standards Update 2016-01 [Member]) at Dec. 31, 2017		$ 0		$ 0		$ 0		$ 433			$ (433)			$ 0
Beginning balance (Accounting Standards Update 2018-02 [Member]) at Dec. 31, 2017		0		0		0		3,921			(3,921)
Beginning balance, shares at Dec. 31, 2017			29,334,859
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	50,543		$ 0		0		50,543			0			0
Other comprehensive income (loss), net of income tax (benefit)	(6,291)		0		0		0			(6,291)			0
Cash dividends declared	(23,492)		0		0		(23,492)			0			0
Stock issued under dividend reinvestment and employee stock purchase plans	2,295		$ 0		152		1			0			2,142
Stock issued under dividend reinvestment and employee stock purchase plans, shares			84,466
Exercise of stock options	1,131		$ 0		(43)		0			0			1,174
Exercise of stock options, shares			59,750
Restricted stock awards granted, net of cancellations	0		$ 0		(398)		0			0			398
Restricted stock awards granted, net of cancellations, shares			25,754
Treasury Stock, Value, Acquired, Cost Method	(5,984)		$ 0		0		0			0			(5,984)
Purchases of treasury stock, shares			(233,977)
Ending balance at Dec. 31, 2018	$ 624,133		$ 157,784		292,401		248,167			(28,416)			(45,803)
Ending balance (Accounting Standards Update 2016-02 [Member]) at Dec. 31, 2018		(1,525)		0		0		(1,525)			0			0
Ending balance (Accounting Standards Update 2017-12 [Member]) at Dec. 31, 2018		0		0		0		(83)			83			0
Ending balance (Accounting Standards Update 2017-08 [Member]) at Dec. 31, 2018		(39)		0		0		(39)			0			0
Ending balance, shares at Dec. 31, 2018			29,270,852
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared, per share	$ 0.80
Net income	$ 65,719		$ 0		0		65,719			0			0
Other comprehensive income (loss), net of income tax (benefit)	6,603		0		0		0			6,603			0
Cash dividends declared	(23,437)		0		0		(23,437)			0			0
Stock-based compensation	2,277		0		2,277		0			0			0
Stock issued under dividend reinvestment and employee stock purchase plans	2,233		$ 0		162		1			0			2,070
Stock issued under dividend reinvestment and employee stock purchase plans, shares			90,669
Exercise of stock options	1,203		$ 0		(182)		0			0			1,385
Exercise of stock options, shares			69,038
Cancellations of performance-based restricted stock awards	0		$ 0		341		0			0			(341)
Cancellations of performance-based restricted stock awards, shares			(17,349)
Treasury Stock, Value, Acquired, Cost Method	(2,045)		$ 0		0		0			0			(2,045)
Purchases of treasury stock, shares			78,581
Ending balance at Dec. 31, 2019	$ 675,122		$ 157,784		294,999		288,803			(21,730)			(44,734)
Ending balance (Accounting Standards Update 2016-13) at Dec. 31, 2019		$ (11,047)		$ 0		$ 0		$ (11,284)	[1]		$ 237	[2]		$ 0
Ending balance, shares at Dec. 31, 2019			29,334,629
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared, per share	$ 0.80
Net income	$ 46,916		$ 0		0		46,916			0			0
Other comprehensive income (loss), net of income tax (benefit)	(651)		0		0		0			(651)			0
Cash dividends declared	(17,522)		0		0		(17,522)			0			0
Stock-based compensation	1,353		0		1,367		(14)			0			0
Stock issued under dividend reinvestment and employee stock purchase plans	2,369		$ 0		(197)		0			0			2,566
Stock issued under dividend reinvestment and employee stock purchase plans, shares			140,721
Vesting of restricted stock unit awards	0		$ 0		(346)		0			0			346
Vesting of restricted stock unit awards, shares			17,035
Exercise of stock options	$ 384		$ 0		(55)		0			0			439
Exercise of stock options, shares	21,500		21,500
Cancellations of performance-based restricted stock awards	$ 0		$ 0		418		0			0			(418)
Cancellations of performance-based restricted stock awards, shares			(14,777)
Treasury Stock, Value, Acquired, Cost Method	(4,452)		$ 0		0		0			0			(4,452)
Purchases of treasury stock, shares			204,056
Ending balance at Dec. 31, 2020	$ 692,472		$ 157,784		$ 296,186		$ 306,899			$ (22,144)			$ (46,253)
Ending balance, shares at Dec. 31, 2020			29,295,052
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared, per share	$ 0.60
[1]	(1) See Note 1, "Summary of Significant Accounting Policies - Accounting Pronouncements Adopted in 2020" for additional information.
[2]	(1) See Note 1, "Summary of Significant Accounting Policies - Accounting Pronouncements Adopted in 2020" for additional information.

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income		$ 46,916	$ 65,719	$ 50,543
Provision for credit losses		40,794	8,511	20,310
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment		4,780	5,277	5,581
Net gain on sales of investment securities	[1]	(871)	(54)	(10)
Net gain on mortgage banking activities	[1]	(16,442)	(3,946)	(3,125)
Bank owned life insurance income	[1]	(2,940)	(3,179)	(3,174)
Net amortization of investment securities premiums and discounts		2,594	1,738	1,602
Amortization, fair market value adjustments and capitalization of servicing rights		218	141	(196)
Net amortization (accretion) of acquisition accounting fair value adjustments		42	(761)	(1,037)
Stock-based compensation		1,480	2,348	2,557
Intangible expenses		1,216	1,595	2,166
Other adjustments to reconcile net income to cash (used in) provided by operating activities		(5,485)	(1,635)	305
Deferred tax benefit		(9,854)	(1,807)	(599)
Originations of loans held for sale		(484,842)	(227,083)	(158,097)
Proceeds from the sale of loans held for sale		468,070	227,473	161,357
Contributions to pension and other postretirement benefit plans		(270)	(266)	(3,264)
(Increase) decrease in accrued interest receivable and other assets		(2,835)	(2,332)	4,547
Increase in accrued interest payable and other liabilities		8,608	1,409	6,540
Net cash provided by operating activities		51,179	73,148	86,006
Cash flows from investing activities:
Proceeds from sale of premises and equipment		4	1,410	1,169
Purchases of premises and equipment		(3,753)	(3,856)	(4,288)
Proceeds from maturities, calls and principal repayments of securities held-to-maturity		81,850	34,207	11,526
Proceeds from maturities, calls and principal repayments of securities available-for-sale		54,758	67,020	54,702
Proceeds from sales of securities available-for-sale		66,421	26,494	1,010
Purchases of investment securities held-to-maturity		43,115	84,733	99,132
Purchases of investment securities available-for-sale		(91,273)	(2,993)	(1,986)
Proceeds from sales of money market mutual funds		12,297	5,035	11,225
Purchases of money market mutual funds		(13,139)	(5,413)	(6,482)
Net decrease (increase) in other investments		71	83	(1,133)
Proceeds from sale of loans originally held-for-investment		14,416	0	0
Net increase in loans and leases		(947,204)	(381,343)	(398,240)
Proceeds from sales of other real estate owned		1,275	720	490
Purchases of bank owned life insurance		0	0	(1,563)
Proceeds from bank owned life insurance		0	0	1,384
Net cash used in investing activities		(867,392)	(343,369)	(431,318)
Cash flows from financing activities:
Net increase in deposits		882,625	474,190	331,170
Net (decrease) increase in short-term borrowings		(774)	(171,088)	84,337
Proceeds from issuance of long-term debt		125,000	25,000	10,000
Repayment of long-term debt		(165,000)	(20,000)	(20,000)
Proceeds from issuance of subordinated notes		100,000	0	0
Payments of Debt Issuance Costs		(1,552)	0	0
Repayment of subordinated notes		(10,000)	0	0
Payment of contingent consideration on acquisitions		(121)	(129)	(131)
Purchases of treasury stock		(4,452)	(2,045)	(5,984)
Stock issued under dividend reinvestment and employee stock purchase plans		2,369	2,233	2,295
Proceeds from exercise of stock options		384	1,203	1,131
Cash dividends paid		(17,536)	(23,435)	(23,495)
Net cash provided by financing activities		910,943	285,929	379,323
Net increase in cash and cash equivalents		94,730	15,708	34,011
Cash and cash equivalents at beginning of year		125,128	109,420	75,409
Cash and cash equivalents at end of year		219,858	125,128	109,420
Supplemental disclosures of cash flow information:
Cash paid for interest		29,233	44,479	30,875
Cash paid for income taxes, net of refunds		17,316	17,171	2,022
Non cash transactions:
Transfer of loans to other real estate owned		8,405	71	477
Transfer of loans to loans held for sale		$ 14,416	$ 0	$ 0
[1]	Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of FASB ASC 606 "Revenue from Contracts with Customers" (FASB ASC 606). Noninterest income streams that are out of scope of FASB ASC 606 include bank owned life insurance income, sales of investment securities and mortgage banking activities.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Organization Univest Financial Corporation (the Corporation) through its wholly owned subsidiary, Univest Bank and Trust Co. (the Bank), is engaged in domestic banking services for individuals, businesses, municipalities and non-profit organizations. The Bank is the parent company of Girard Investment Services, LLC, a registered introducing broker-dealer and a licensed insurance agency, Girard Advisory Services, LLC, a registered investment advisory firm, and Girard Pension Services, LLC, a registered investment advisor, which provides investment consulting and management services to municipal entities. The Bank is also the parent company of Univest Insurance, LLC, an independent insurance agency, and Univest Capital, Inc., an equipment financing business. The Bank's subsidiaries enhance the traditional banking services provided by the Bank. The Bank serves Bucks, Berks, Chester, Cumberland, Dauphin, Delaware, Lancaster, Lehigh, Montgomery, Northampton, Philadelphia and York Counties in Pennsylvania and Atlantic and Cape May Counties in New Jersey through 40 banking offices and provides banking services to the residents and employees of 14 retirement communities. On January 25, 2021, the Bank opened a banking office in York County, Pennsylvania, and on January 29, 2021, the Bank closed two banking offices in Montgomery County, Pennsylvania. These branch closures were completed as part of the Corporation's branch optimization plan that was announced in the fourth quarter of 2020. Principles of Consolidation The consolidated financial statements include the accounts of the Corporation and its wholly owned subsidiaries, including the Bank as the Corporation's primary subsidiary. All significant intercompany balances and transactions have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the current-year presentation. Assets held by the Corporation in a fiduciary or agency capacity for its customers are not included in the consolidated financial statements since such items are not assets of the Corporation. Use of Estimates The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles (U.S. GAAP) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant changes include fair value measurement of investment securities available-for-sale and the determination of the allowance for credit losses. Earnings per Share The Corporation uses the two-class method to calculate earnings per share as the unvested restricted stock awards outstanding under the Corporation's equity incentive plans are participating shares with nonforfeitable rights to dividends. Restricted stock awards granted prior to January 1, 2019 represent participating shares. Restricted stock units granted subsequent to January 1, 2019 do not contain nonforfeitable dividend rights and are therefore not participating shares. Under the two-class method, earnings per common share are computed by dividing the sum of distributed earnings to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of common shares outstanding for the period. In applying the two-class method, undistributed earnings are allocated to both common shares and participating securities based on the number of weighted average shares outstanding during the period. Diluted earnings per share reflect additional common shares that would have been outstanding if options on common shares had been exercised. Potential common shares that may be issued by the Corporation relate to outstanding stock options and restricted stock units, and are determined using the treasury stock method. The effects of options to issue common stock and unvested restricted stock units are excluded from the computation of diluted earnings per share in periods in which the effect would be antidilutive. Antidilutive options are those options with weighted average exercise prices in excess of the weighted average market value. Antidilutive restricted stock units are those with hypothetical repurchases of shares, under the treasury stock method, exceeding the average restricted stock units outstanding for the periods presented. Cash and Cash Equivalents The Corporation has defined those items included in the caption "Cash and due from banks" and "Interest-earning deposits with other banks" as cash and cash equivalents. Interest-earning deposits with other banks consist of deposit accounts with other financial institutions generally having maturities of three months or less. At times, such balances exceed the FDIC limits for insurance coverage. Investment Securities Management determines the appropriate classification of debt securities at the time of purchase and re-evaluates such designation as of each balance sheet date. Securities are classified as investment securities held-to-maturity and carried at amortized cost if management has the positive intent and ability to hold the securities to maturity. Securities classified as available-for-sale are those securities that the Corporation intends to hold for an indefinite period of time but not necessarily to maturity. Securities available-for-sale are carried at fair value with unrealized gains and losses recorded in accumulated other comprehensive income, net of estimated income taxes. Any decision to sell a security classified as available-for-sale would be based on various factors, including interest rates, changes in the maturity or mix of the Corporation's assets and liabilities, liquidity needs, regulatory capital considerations and other factors. Securities purchased with the intention of recognizing short-term profits are placed in the trading account and are carried at fair value. The Corporation did not have any trading account securities at December 31, 2020 or 2019. Purchase premiums and discounts are recognized in interest income using the interest method over the expected life of the securities except for premiums on callable debt securities, which are amortized to the next call date. D ue to volatility in the financial markets, there is the risk that any future fair value could vary from that disclosed in the accompanying financial statements. Realized gains and losses on the sale of investment securities are recorded on the trade date, determined using the specific identification method, and are included in the consolidated statements of income. The Corporation measures expected credit losses on held-to-maturity debt securities, which are comprised of U.S. government agency securities and residential mortgage-backed securities. The Corporation's residential mortgage-backed security holdings are issued by U.S. government entities and agencies and are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major rating agencies and have a long history of no credit losses. Accrued interest receivable on held-to-maturity debt securities totaled $441 thousand at December 31, 2020 and is included within Accrued interest receivable and other assets. This amount is excluded from the estimate of expected credit losses. Held-to-maturity debt securities are typically classified as nonaccrual when the contractual payment of principal or interest has become 90 days past due or management has serious doubts about the further collectability of principal or interest. When held-to-maturity debt securities are placed on nonaccrual status, unpaid interest credited to income is reversed. The Corporation measures expected credit losses on available-for-sale debt securities when the Corporation does not intend to sell, or when it is not more likely than not that it will be required to sell, the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security's amortized cost basis is written down to fair value through income. For available-for-sale debt securities that do not meet the aforementioned criteria, the Corporation evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, the Corporation considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If this evaluation indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, equal to the amount that the fair value is less than the amortized cost basis. Economic forecast data is utilized to calculate the present value of expected cash flows. The Corporation obtains its forecast data through a subscription to a widely recognized and relied upon company who publishes various forecast scenarios. Management evaluates the various scenarios to determine a reasonable and supportable scenario, and utilizes a single scenario in the model. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. The allowance for credit losses on available-for-sale debt securities is included within Investment securities available-for-sale on the consolidated balance sheet. Changes in the allowance for credit losses are recorded within Provision for credit losses on the consolidated statement of income. Losses are charged against the allowance when the Corporation believes the collectability of an available-for-sale security is in jeopardy or when either of the criteria regarding intent or requirement to sell is met. Accrued interest receivable on available-for-sale debt securities totaled $477 thousand at December 31, 2020 and is included within Accrued interest receivable and other assets on the consolidated balance sheet. This amount is excluded from the estimate of expected credit losses. Available-for-sale debt securities are typically classified as nonaccrual when the contractual payment of principal or interest has become 90 days past due or management has serious doubts about the further collectability of principal or interest. When available-for-sale debt securities are placed on nonaccrual status, unpaid interest credited to income is reversed. Equity securities are measured at fair value with changes in fair value recognized in net income. Investment Securities - Prior to ASU No. 2016-13 adoption The Corporation adopted ASU No. 2016-13 effective January 1, 2020. Financial statement amounts related to Investment Securities recorded as of December 31, 2019 and for the periods ending December 31, 2019 and 2018 are presented in accordance with the accounting policies described in the following sections. The following sections were carried forward from the Annual Report on Form 10-K for the year ended December 31, 2019. Securities are classified as investment securities held-to-maturity and carried at amortized cost if management has the positive intent and ability to hold the securities to maturity. Securities purchased with the intention of recognizing short-term profits are placed in the trading account and are carried at fair value. The Corporation did not have any trading account securities at December 31, 2019 or 2018. Securities classified as available-for-sale are those securities that the Corporation intends to hold for an indefinite period of time but not necessarily to maturity. Securities available-for-sale are carried at fair value with unrealized gains and losses, net of estimated income taxes, reflected in accumulated other comprehensive income, a separate component of shareholders' equity. Any decision to sell a security classified as available-for-sale would be based on various factors, including interest rates, changes in the maturity or mix of the Corporation's assets and liabilities, liquidity needs, regulatory capital considerations and other factors. Management determines the appropriate classification of debt securities at the time of purchase and re-evaluates such designation as of each balance sheet date. Purchase premiums and discounts are recognized in interest income using the interest method over the expected life of the securities except for premiums on callable debt securities which are amortized to the earliest call date, effective January 1, 2019, in accordance with ASU No. 2017-08. See "Recent Accounting Pronouncements" for additional information. D ue to volatility in the financial markets, there is the risk that any future fair value could vary from that disclosed in the accompanying financial statements. Realized gains and losses on the sale of investment securities are recorded on the trade date, determined using the specific identification method and are included in the consolidated statements of income. Management evaluates debt securities, which are comprised of U.S. government, government sponsored agencies, municipalities, corporations and other issuers, for other-than-temporary impairment by considering the current economic conditions, the length of time and the extent to which the fair value has been less than cost, market interest rates, creditworthiness of the issuer and the credit rating of each security. Unrealized losses on the Corporation’s investments in debt securities that are deemed temporary in nature are recognized in other comprehensive income, net of tax. Should it be determined that a security is impacted by deteriorating credit or if it is expected the value will not recover during the expected holding period, the credit portion of the loss is recognized in earnings. Equity securities are measured at fair value with changes in fair value recognized in net income effective January 1, 2018, in accordance with ASU No. 2016-01. The Corporation evaluates its equity securities for impairment. Federal Home Loan Bank Stock, Federal Reserve Bank Stock and Certain Other Investments without Readily Determinable Fair Values At December 31, 2020 and 2019, the Bank held $14.6 million in Federal Reserve Bank stock as required by the Federal Reserve Bank. The Bank is a member of the FHLB, and as such, is required to hold FHLB stock as a condition of membership as determined by the FHLB. The Bank is required to hold additional stock in the FHLB in relation to the level of outstanding borrowings. The Bank held FHLB stock of $13.5 million at December 31, 2020 and 2019. Because ownership is restricted, the fair values of these investments are not readily determinable. As such, these investments are recorded at cost and periodically evaluated for impairment based on ultimate recovery of par value. The Corporation determined there was no impairment of its investments in these stocks at December 31, 2020 or 2019. Loans Held for Sale The Corporation may elect the fair value option for loans intended for sale in the secondary market. This election is made on a loan level basis at the time of origination, if the fair value option is not elected, loans held for sale were carried at the lower of aggregate cost or estimated fair value. As of December 31, 2020, loans held for sale were accounted for under the fair value option. Cash payments and cash receipts resulting from acquisitions and sales of loans are classified as operating cash flows if those loans are acquired specifically for resale. Cash receipts resulting from sales of loans that were not specifically acquired for resale are classified as investing cash inflows regardless of a change in the purpose for holding those loans. Loans and Leases Loans that the Corporation has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at amortized cost, which is the principal amount, net of deferred fees and costs, and the allowance for credit losses. Lease financings are stated at net investment amount, consisting of the present value of lease payments and unguaranteed residual value, plus initial direct costs. A loan or lease is typically classified as nonaccrual when the contractual payment of principal or interest has become 90 days past due or management has serious doubts about the further collectability of principal or interest, even though the loan or lease is currently performing. When a loan or lease is classified as nonaccrual, the accrual of interest on such a loan or lease is discontinued. A loan or lease may remain on accrual status if it is in the process of collection and is either guaranteed or well secured. When a loan or lease is placed on nonaccrual status, unpaid interest credited to income is reversed and the amortization of the deferred fees and costs is suspended. Interest payments received on nonaccrual loans and leases are either applied against principal or reported as interest income, according to management's judgment as to the ultimate collectability of principal. Loans and leases are usually restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time, and the ultimate collectability of the total contractual principal and interest is no longer in doubt. A loan or lease is classified as a troubled debt restructuring when a concession has been granted to an existing borrower experiencing financial difficulties. The Corporation grants concessions to existing borrowers primarily related to extensions of interest-only payment periods and an occasional payment modification. These modifications typically are for up to one year. The goal when restructuring a credit is to establish a reasonable period of time to provide cash flow relief to customers experiencing cash flow difficulties. Accruing troubled debt restructured loans are primarily comprised of loans on which interest is being accrued under the restructured terms, and the loans are current or less than ninety days past due. The Corporation modified certain loans and leases via principal and/or interest deferrals in accordance with Section 4013 of the CARES Act and the Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customer Affected by the Coronavirus during the year ended December 31, 2020 . Accordingly, these loans and leases were not categorized as troubled debt restructurings. Accrued interest receivable on loans and leases held for investment totaled $15.3 million at December 31, 2020 and is included within Accrued interest receivable and other assets on the consolidated balance sheet. $14.2 million of this amount is excluded from the estimate of expected credit losses. $1.1 million of this amount represents accrued interest receivable on loans that were modified in accordance with Section 4013 of the CARES Act and the Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customer Affected by the Coronavirus and includes an allowance for credit losses of $18 thousand. Overdraft deposits are re-classified as loans and are included in the total loans and leases on the balance sheet. Loan and Lease Fees Fees collected upon loan or lease originations and certain direct costs of originating loans and leases are deferred and recognized over the contractual lives of the related loans and leases as yield adjustments using the interest method. Upon prepayment or other disposition of the underlying loans and leases before their contractual maturities, any associated unearned fees or unamortized costs are recognized. Initial direct costs, comprised of commissions paid that would not have been incurred if the lease had not been obtained, are deferred and amortized over the life of the contract, and are classified within net interest income on leases. Allowance for Credit Losses on Loans and Leases The allowance for credit losses (ACL) on loans and leases is a valuation account that is used to present the net amount expected to be collected on a loan or lease. The ACL on loans and leases is measured on a collective (pooled) basis when similar risk characteristics exist. The ACL on loans and leases is adjusted through provision for credit losses as a charge against, or credit to, earnings. Loans and leases deemed to be uncollectible are charged against the ACL on loans and leases, and any subsequent recoveries are credited to the ACL on loans and leases. Management evaluates the ACL on loans and leases on a quarterly basis and when changes in the reserve are necessary, an adjustment is made. The ACL on loans and leases is included within Allowance for credit losses, loans and leases on the consolidated balance sheet. Changes in the ACL on loans and leases are recorded within Provision for credit losses on the consolidated statement of income. Management utilizes a discounted cash flow (DCF) model to calculate the present value of the expected cash flows for pools of loans and leases that share similar risk characteristics and compares the results of this calculation to the amortized cost basis to determine its allowance for credit loss balance. Management uses relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts in calculating its ACL. Historical credit loss experience provides one of the bases for the estimation of expected credit losses. Management determines whether there is a need to make qualitative adjustments to historical loss information by monitoring certain factors including differences in current loan-specific risk characteristics as well as for changes in external or environmental conditions, or other relevant factors. The contractual term used in projecting the cash flows of a loan is based on the maturity date of a loan, and is adjusted for prepayment or curtailment assumptions which may shorten that contractual time period. Options to extend are considered by management in determining the contractual term. The key inputs to the DCF model are (1) probability of default, (2) loss given default, (3) prepayment and curtailment rates, (4) reasonable and supportable economic forecasts, (5) forecast reversion period, (6) expected recoveries on charged off loans, and (7) discount rate. Probability of Default (PD) In order to incorporate economic factors into forecasting within the DCF model, management elected to use the Loss Driver method to generate the PD rate inputs. The Loss Driver method analyzes how one or more economic factors change the default rate using a statistical regression analysis. Management selects economic factors for each loan pool that have strong correlations to historical default rates, and reviews the economic factors selected on an annual basis. For the period ended December 31, 2020, the factors management selected were unemployment rate, GDP, housing pricing index and retail sales. Loss Given Default (LGD) Management elected to use the Frye Jacobs parameter for determining the LGD input, which is an estimation technique that derives a LGD input from segment specific risk curves that correlates LGD with PD. Prepayment and Curtailment rates Prepayment Rates: Loan and lease level transaction data is used to calculate quarterly prepayment rates using available historical loan and lease level data. Those quarterly rates are annualized and the average of the annualized rates is used in the DCF calculation for fixed payment or term loans. Rates are calculated for each pool. Curtailment Rates: Loan level transaction data is used to calculate annual curtailment rates using available historical loan level data. The average of the historical rates is used in the DCF model for interest only payment or line of credit type loans. Rates are calculated for each pool. Reasonable and Supportable Forecasts The forecast data used in the DCF model is obtained via a subscription to a widely recognized and relied upon company who publishes various forecast scenarios. Management evaluates the various scenarios to determine a reasonable and supportable scenario, and utilizes a single scenario in the model. Forecast Reversion Period Management uses forecasts to predict how economic factors will perform and has determined to use a four quarter forecast period as well as a four quarter straight-line reversion period to historical averages (also commonly referred to as the mean reversion period). Expected Recoveries on Charged-off Loans Management performs an analysis to estimate recoveries that could be reasonably expected based on historical experience in order to account for expected recoveries on loans that have already been fully charged-off and are not included in the ACL calculation. Discount Rate The effective interest rate of the underlying loans and leases of the Corporation serves as the discount rate applied to the expected periodic cash flows. Management adjusts the effective interest rate used to discount expected cash flows to incorporate expected prepayments which can be reasonably estimated for each pool. Individual Evaluation Management evaluates individual instruments for expected credit losses when those instruments do not share similar risk characteristics with instruments evaluated using a collective (pooled) basis. Instruments will not be included in both collective and individual analyses. Individual analysis will establish a specific reserve for instruments in scope. All loans on nonaccrual status are individually evaluated for a specific reserve. Management considers a financial asset as collateral-dependent when the debtor is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral, based on management's assessment as of the reporting date. Reserve for Loan and Lease Losses - Prior to ASU No. 2016-13 adoption The Corporation adopted ASU No. 2016-13 effective January 1, 2020. Financial statement amounts related to the Allowance For Credit Losses On Loans and Leases recorded as of December 31, 2019 and for the periods ending December 31, 2019 and 2018 are presented in accordance with the accounting policies described in the following sections. The following sections were carried forward from the Annual Report on Form 10-K for the year ended December 31, 2019. The reserve for loan and lease losses is maintained at a level representing management's best estimate of known risks and inherent losses in the portfolio, based upon management's evaluation of the portfolio's collectability. Management evaluates the need to establish reserves against losses on loans and leases on a quarterly basis. When changes in the reserve are necessary, an adjustment is made The reserve for loan and lease losses is adjusted through provisions for loan and lease losses charged against or credited to income. Loans deemed to be uncollectible are charged against the reserve for loan and lease losses, and any subsequent recoveries are credited to the reserve. Reserve Required for Impaired Loans and Leases A loan or lease is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect future payments of principal or interest as contractually due. The Bank applies its normal loan review procedures in determining if a loan is impaired, which includes reviewing the collectability of delinquent and internally classified loans on a regular basis and at least quarterly. In determining the likelihood of collecting principal and interest, the Bank considers all available and relevant information, including the borrower's actual and projected cash flows, balance sheet strength, liquidity and overall financial position. Additionally, all loans classified as troubled debt restructurings are considered impaired. When a loan is classified as impaired, an impairment analysis is performed within the quarter in which a loan is identified as impaired to determine if a valuation allowance is needed. The Bank re-examines each impaired loan on a quarterly basis to determine if any adjustment to the valuation allowance or net carrying amount of a loan is required. The Bank recognizes charge-offs associated with impaired loans when all or a portion of a loan is considered to be uncollectible. In measuring impairment, the Bank determines whether or not the loan is collateral dependent. A loan is collateral dependent if repayment is expected to be provided solely by the underlying collateral, which includes repayment from the proceeds from the sale of the collateral, cash flows from the continued operation of the collateral, or both, and there are no other available and reliable repayment sources. To determine the initial amount of impairment for a collateral dependent loan, the Bank utilizes a recent appraisal, an agreement of sale or a letter of intent. If the fair value of the underlying collateral, less costs to sell, is less than the loan's carrying amount, the Bank adds a provision to the reserve for loan and lease losses in the amount of the difference between fair value, less costs to sell, and the loan or lease's carrying amount. In subsequent periods, the Bank takes into consideration current facts and circumstances in analyzing whether the fair value of the collateral has increased or decreased significantly such that a change to the corresponding valuation allowance is required. If current facts and circumstances are insufficient to determine fair value, the Bank obtains a new appraisal. For loans that are not collateral dependent, the Bank establishes a specific reserve on impaired loans based on management's estimate of the discounted cash flows the Bank expects to receive from the borrower. Factors considered in evaluating such cash flows include: (1) the strength of the customer's personal or business cash flows and personal guarantees; (2) the borrower's effort to cure the delinquency; (3) the availability of other sources of repayment; (4) the type and value of collateral, if applicable; and (5) the strength of our collateral position, if applicable. General Reserve on the Remainder of the Portfolio The Bank establishes a general reserve for loans and leases that are not considered impaired to recognize the inherent losses associated with lending activities. This general reserve is determined by segmenting the loan portfolio and assigning reserve factors to each category. The reserve factors are calculated using the Bank's historical losses over a determined observation period and loss emergence periods, and are adjusted for significant factors that, in management's judgment, affect the collectability of the portfolio as of the evaluation date. These significant factors include: • Changes in lending policies and procedures, including changes in underwriting standards and collection, charge-off and recovery practices not considered elsewhere in estimating credit losses; • Changes in national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio, including the condition of various market segments; • Changes in the size and composition of the portfolio and in the terms of loans; • Changes in the experience, ability, and depth of lending management and other relevant staff; • Changes in the volume and severity of past due loans, the volume of nonaccrual loans, and the volume and severity of adversely classified or graded loans; • Changes in the quality of the institution’s loan review system; • Changes in the value of underlying collateral for collateral-dependent loans; • The existence and effect of any concentrations of credit, and changes in the level of such concentrations; and • The effect of other external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the institution’s existing portfolio. The Corporation maintains a reserve in other liabilities for off-balance sheet credit exposures that currently are unfunded in categories with historical loss experience. Premises and Equipment Land is stated at cost, and premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed on the straight-line method and charged to

Earnings per Share

Earnings per Share	12 Months Ended
	Dec. 31, 2020
Earnings Per Share, Basic and Diluted [Abstract]
Earnings per Share	Earnings per Share The following table sets forth the computation of basic and diluted earnings per share: For the Years Ended December 31, (Dollars and shares in thousands, except per share data) 2020 2019 2018 Numerator: Net income $ 46,916 $ 65,719 $ 50,543 Net income allocated to unvested restricted stock awards (69) (236) (333) Net income allocated to common shares $ 46,847 $ 65,483 $ 50,210 Denominator: Weighted average shares outstanding 29,244 29,300 29,370 Average unvested restricted stock awards (46) (107) (193) Denominator for basic earnings per share —weighted-average shares outstanding 29,198 29,193 29,177 Effect of dilutive securities—employee stock options and restricted stock units 70 68 82 Denominator for diluted earnings per share —adjusted weighted-average shares outstanding 29,268 29,261 29,259 Basic earnings per share $ 1.60 $ 2.24 $ 1.72 Diluted earnings per share $ 1.60 $ 2.24 $ 1.72 Average anti-dilutive options and restricted stock units excluded from computation of diluted earnings per share 491 325 319

Restrictions on Cash and Due fr

Restrictions on Cash and Due from Banks and Interest-earning Deposit Accounts	12 Months Ended
	Dec. 31, 2020
Text Block [Abstract]
Restrictions on Cash and Due from Banks and Interest-earning Deposit Accounts	Restrictions on Cash and Due from Banks and Interest-earning Deposit AccountsThe Bank maintains reserve balances under Federal Reserve Bank requirements. There was no reserve requirement at December 31, 2020 as a result of the Federal Reserve Board reducing the reserve requirement ratios to zero during the first quarter of 2020. The reserve requirement at December 31, 2019 was $11.1 million and was satisfied by vault cash held at the Bank's branches. The average balances at the Federal Reserve Bank of Philadelphia were $270.7 million and $138.4 million for the years ended December 31, 2020 and 2019, respectively. The Corporation maintains interest-earning deposit accounts at other financial institutions and pledges certain deposits as collateral for credit derivatives and interest rate swap agreements. At December 31, 2020, the Corporation had $100 thousand of deposits pledged for interest rate swap agreements. At December 31, 2019, the Corporation had no deposits pledged for credit derivatives and interest rate swap agreements. See Note 17, "Derivative Instruments and Hedging Activities" for additional information.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The following table shows the amortized cost, the estimated fair value and the allowance for credit losses of the held-to-maturity securities and available-for-sale securities at December 31, 2020 and the amortized cost and the estimated fair value of the held-to-maturity securities and available-for-sale securities at December 31, 2019, by contractual maturity within each type: At December 31, 2020 At December 31, 2019 (Dollars in thousands) Amortized Gross Gross Allowance for Credit Losses Fair Value Amortized Gross Gross Fair Value Securities Held-to-Maturity U.S. government corporations and agencies: After 1 year to 5 years $ 6,998 $ 171 $ — — $ 7,169 $ 6,997 $ 66 $ — $ 7,063 6,998 171 — — 7,169 6,997 66 — 7,063 Residential mortgage-backed securities: After 5 years to 10 years 6,325 253 — — 6,578 9,083 129 — 9,212 Over 10 years 137,934 4,644 — — 142,578 175,972 2,749 (110) 178,611 144,259 4,897 — — 149,156 185,055 2,878 (110) 187,823 Total $ 151,257 $ 5,068 $ — $ — $ 156,325 $ 192,052 $ 2,944 $ (110) $ 194,886 Securities Available-for-Sale U.S. government corporations and agencies: Within 1 year $ — $ — $ — $ — $ — $ 301 $ — $ (1) $ 300 — — — — — 301 — (1) 300 State and political subdivisions: After 1 year to 5 years 3,560 33 — — 3,593 4,717 23 — 4,740 After 5 years to 10 years 9,881 63 — — 9,944 29,563 292 — 29,855 13,441 96 — — 13,537 34,280 315 — 34,595 Residential mortgage-backed securities: Within 1 year — — — — — 304 9 — 313 After 1 year to 5 years 323 10 — — 333 611 3 (1) 613 After 5 years to 10 years 1,664 58 — — 1,722 36,893 107 (21) 36,979 Over 10 years 110,018 2,153 (63) — 112,108 80,630 378 (453) 80,555 112,005 2,221 (63) — 114,163 118,438 497 (475) 118,460 Collateralized mortgage obligations: After 5 years to 10 years 754 21 — — 775 2,377 6 (22) 2,361 Over 10 years 4,561 — (15) — 4,546 — — — — 5,315 21 (15) — 5,321 2,377 6 (22) 2,361 Corporate bonds: Within 1 year 499 2 — — 501 6,012 1 (4) 6,009 After 1 year to 5 years 29,498 1,440 — (16) 30,922 29,606 596 (61) 30,141 After 5 years to 10 years 60,496 3 (5,450) (853) 54,196 — — — — Over 10 years — — — — — 60,000 — (4,942) 55,058 90,493 1,445 (5,450) (869) 85,619 95,618 597 (5,007) 91,208 Total $ 221,254 $ 3,783 $ (5,528) $ (869) $ 218,640 $ 251,014 $ 1,415 $ (5,505) $ 246,924 Gross unrealized gains and losses on available-for-sale securities are recognized in accumulated other comprehensive income (loss) and changes in the allowance for credit loss are recorded in provision for credit loss expense. Expected maturities may differ from contractual maturities because debt issuers may have the right to call or prepay obligations without call or prepayment penalties and mortgage-backed securities typically prepay at a rate faster than contractually due. Securities with a carrying value of $249.6 million and $340.8 million at December 31, 2020 and 2019, respectively, were pledged to secure public funds deposits and other contractual obligations. In addition, securities of $32.6 million and $12.5 million were pledged to secure credit derivatives and interest rate swaps at December 31, 2020 and 2019, respectively. See Note 17, "Derivative Instruments and Hedging Activities" for additional information. The following table presents information related to sales of securities available-for-sale during the years ended December 31, 2020, 2019 and 2018: For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Securities available-for-sale: Proceeds from sales $ 66,421 $ 26,494 $ 1,010 Gross realized gains on sales 885 78 10 Gross realized losses on sales 14 24 — Tax expense related to net realized gains on sales 183 11 2 At December 31, 2020 and 2019, there were no reportable investments in any single issuer representing more than 10% of shareholders' equity. The following table shows the fair value of securities that were in an unrealized loss position for which an allowance for credit losses has not been recorded at December 31, 2020 and 2019, by the length of time those securities were in a continuous loss position. Less than Twelve Months Total (Dollars in thousands) Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized At December 31, 2020 Securities Held-to-Maturity Total $ — $ — $ — $ — $ — $ — Securities Available-for-Sale Residential mortgage-backed securities $ 13,677 $ (62) $ 31 $ (1) $ 13,708 $ (63) Collateralized mortgage obligations 4,545 (15) — — 4,545 (15) Total $ 18,222 $ (77) $ 31 $ (1) $ 18,253 $ (78) At December 31, 2019 Securities Held-to-Maturity Residential mortgage-backed securities $ 26,767 $ (110) $ — $ — $ 26,767 $ (110) Total $ 26,767 $ (110) $ — $ — $ 26,767 $ (110) Securities Available-for-Sale U.S. government corporations and agencies $ — $ — $ 300 $ (1) $ 300 $ (1) Residential mortgage-backed securities 21,827 (62) 48,672 (413) 70,499 (475) Collateralized mortgage obligations — — 1,295 (22) 1,295 (22) Corporate bonds 998 — 65,506 (5,007) 66,504 (5,007) Total $ 22,825 $ (62) $ 115,773 $ (5,443) $ 138,598 $ (5,505) At December 31, 2020, the fair value of available-for-sale securities in an unrealized loss position for which an allowance for credit losses has not been recorded was $18.3 million, including unrealized losses of $78 thousand. These holdings were comprised of four federal agency mortgage-backed securities, which are U.S. government entities and agencies and are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major rating agencies and have a long history of no credit losses. The Corporation does not intend to sell the securities in an unrealized loss position and is unlikely to be required to sell these securities before a recovery of fair value, which may be maturity. The Corporation concluded that the decline in fair value of these securities was not indicative of a credit loss. The Corporation did not recognize any other-than-temporary impairment charges on these securities for the year ended December 31, 2019. At December 31, 2020, no held-to-maturity securities held by the Corporation were in an unrealized loss position. The Corporation did not recognize any credit losses on held-to-maturity debt securities for the year ended December 31, 2020 or other-than-temporary impairment charges for the year ended December 31, 2019. The table below presents a rollforward by major security type for the year ended December 31, 2020 of the allowance for credit losses on securities available-for-sale. (Dollars in thousands) Corporate Bonds For the Year Ended December 31, 2020 Securities Available-for-Sale Beginning balance $ — Adjustment to initially apply ASU No. 2016-13 for CECL (300) Change in securities for which a previous expected credit loss was recognized (569) Ending balance $ (869) At December 31, 2020, the fair value of available-for-sale securities in an unrealized loss position for which an allowance for credit losses has been recorded was $58.7 million, including unrealized losses of $5.5 million, and allowance for credit losses of $869 thousand. These holdings were in an unrealized loss position for a period of greater than twelve months and were comprised of seven investment grade corporate bonds which fluctuate in value based on changes in market conditions. For these underlying securities, fluctuations were primarily due to changes in the interest rate environment. The Corporation does not have the intent to sell these securities and it is not likely that it will be required to sell the securities before their anticipated recovery. The underlying issuers continue to make timely principal and interest payments on the securities. The Corporation concluded that a portion of decline in the value of these securities was indicative of a credit loss. The Corporation recorded a provision for credit losses of $569 thousand on these available-for-sale debt securities for the year ended December 31, 2020. The Corporation did not record any other-than-temporary impairment charges on these securities for the years ended December 31, 2019 and 2018. The Corporation recognized a $186 thousand net loss and a $80 thousand net gain on equity securities during the years ended December 31, 2020 and 2019, respectively, in other noninterest income. There were no sales of equity securities during the years ended December 31, 2020 or 2019.

Loans and Leases

Loans and Leases	12 Months Ended
	Dec. 31, 2020
Receivables [Abstract]
Loans and Leases	Loans and Leases Summary of Major Loan and Lease Categories At December 31, (Dollars in thousands) 2020 2019 Commercial, financial and agricultural $ 892,665 $ 947,029 Paycheck Protection Program 483,773 — Real estate-commercial 2,458,872 2,040,441 Real estate-construction 243,355 232,595 Real estate-residential secured for business purpose 381,446 373,973 Real estate-residential secured for personal purpose 487,600 439,059 Real estate-home equity secured for personal purpose 166,609 174,435 Loans to individuals 27,482 29,883 Lease financings 165,039 149,421 Loans and leases held for investment, net of deferred income 5,306,841 4,386,836 Less: Allowance for credit losses, loans and leases (83,044) (35,331) Net loans and leases held for investment $ 5,223,797 $ 4,351,505 Imputed interest on lease financings, included in the above table $ (17,670) $ (16,340) Net deferred (fees) costs, included in the above table (2,903) 5,999 Overdraft deposits included in the above table 948 407 Age Analysis of Past Due Loans and Leases The following presents, by class of loans and leases, an aging of past due loans and leases, loans and leases which are current and nonaccrual loans and leases at December 31, 2020: Accruing Loans and Leases (Dollars in thousands) 30-59 60-89 90 Days Total Current Total Accruing Loans and Leases Nonaccrual Loans and Leases Total Loans At December 31, 2020 Commercial, financial and agricultural $ 1,104 $ 279 $ 50 $ 1,433 $ 888,405 $ 889,838 $ 2,827 $ 892,665 Paycheck Protection Program — — — — 483,773 483,773 — 483,773 Real estate—commercial real estate and construction: Commercial real estate 3,230 859 945 5,034 2,431,099 2,436,133 22,739 2,458,872 Construction 361 — — 361 242,994 243,355 — 243,355 Real estate—residential and home equity: Residential secured for business purpose 3,726 603 — 4,329 374,331 378,660 2,786 381,446 Residential secured for personal purpose 6,057 80 — 6,137 479,377 485,514 2,086 487,600 Home equity secured for personal purpose 607 32 — 639 164,923 165,562 1,047 166,609 Loans to individuals 190 74 185 449 27,033 27,482 — 27,482 Lease financings 898 291 212 1,401 163,431 164,832 207 165,039 Total $ 16,173 $ 2,218 $ 1,392 $ 19,783 $ 5,255,366 $ 5,275,149 $ 31,692 $ 5,306,841 The following presents, by class of loans and leases, an aging of past due loans and leases, loans and leases which are current, acquired credit impaired loans and nonaccrual loans and leases at December 31, 2019: Accruing Loans and Leases (Dollars in thousands) 30-59 60-89 90 Days Total Current Total Accruing Loans and Leases Acquired Credit Impaired Nonaccrual Loans and Leases Total Loans At December 31, 2019 Commercial, financial and agricultural $ 2,602 $ 150 $ 20 $ 2,772 $ 940,815 $ 943,587 $ — $ 3,442 $ 947,029 Real estate—commercial real estate and construction: Commercial real estate 3,473 266 — 3,739 2,008,568 2,012,307 206 27,928 2,040,441 Construction — — — — 232,338 232,338 — 257 232,595 Real estate—residential and home equity: Residential secured for business purpose 2,078 2,442 — 4,520 366,473 370,993 — 2,980 373,973 Residential secured for personal purpose 2,969 446 — 3,415 433,548 436,963 58 2,038 439,059 Home equity secured for personal purpose 605 297 — 902 172,106 173,008 — 1,427 174,435 Loans to individuals 157 73 74 304 29,579 29,883 — — 29,883 Lease financings 1,409 296 49 1,754 147,161 148,915 — 506 149,421 Total $ 13,293 $ 3,970 $ 143 $ 17,406 $ 4,330,588 $ 4,347,994 $ 264 $ 38,578 $ 4,386,836 Nonperforming Loans and Leases The following presents, by class of loans and leases, nonperforming loans and leases at December 31, 2020 and 2019. At December 31, 2020 2019 (Dollars in thousands) Nonaccrual Accruing Loans and Total Nonperforming Nonaccrual Accruing Loans and Total Nonperforming Commercial, financial and agricultural $ 2,827 $ — $ 50 $ 2,877 $ 3,442 $ — $ 20 $ 3,462 Real estate—commercial real estate and construction: Commercial real estate 22,739 — 945 23,684 27,928 — — 27,928 Construction — — — — 257 — — 257 Real estate—residential and home equity: Residential secured for business purpose 2,786 — — 2,786 2,980 — — 2,980 Residential secured for personal purpose 2,086 — — 2,086 2,038 — — 2,038 Home equity secured for personal purpose 1,047 53 — 1,100 1,427 54 — 1,481 Loans to individuals — — 185 185 — — 74 74 Lease financings 207 — 212 419 506 — 49 555 Total $ 31,692 $ 53 $ 1,392 $ 33,137 $ 38,578 $ 54 $ 143 $ 38,775 * Includes nonaccrual troubled debt restructured loans of $14.1 million and $13.8 million at December 31, 2020 and December 31, 2019, respectively. The following table presents the amortized cost basis of loans and leases on nonaccrual status and loans and leases 90 days or more past due and still accruing as of December 31, 2020. (Dollars in thousands) Nonaccrual With No ACL Nonaccrual With ACL Total Nonaccrual Loans 90 Days or more Past Due and Accruing Interest At December 31, 2020 Commercial, financial and agricultural $ 2,187 $ 640 $ 2,827 $ 50 Real estate-commercial 22,739 — 22,739 945 Real estate-residential secured for business purpose 2,663 123 2,786 — Real estate-residential secured for personal purpose 1,958 128 2,086 — Real estate-home equity secured for personal purpose 1,047 — 1,047 — Loans to individuals — — — 185 Lease financings — 207 207 212 Total $ 30,594 $ 1,098 $ 31,692 $ 1,392 For the year ended December 31, 2020, $4 thousand of interest income was recognized on nonaccrual loans and leases. The following table presents the amortized cost basis of collateral-dependent nonaccrual loans by class of loans and type of collateral as of December 31, 2020. (Dollars in thousands) Real Estate Other (1) None (2) Total At December 31, 2020 Commercial, financial and agricultural $ 1,351 $ 1,194 $ 282 $ 2,827 Real estate-commercial 22,739 — — 22,739 Real estate-residential secured for business purpose 2,786 — — 2,786 Real estate-residential secured for personal purpose 2,086 — — 2,086 Real estate-home equity secured for personal purpose 1,047 — — 1,047 Total $ 30,009 $ 1,194 $ 282 $ 31,485 (1) Collateral consists of business assets, including accounts receivable and personal property. (2) Loans fully reserved given lack of collateral. Credit Quality Indicators The Corporation categorizes risk based on relevant information about the ability of the borrower to service their debt. Loans with a relationship balance of less than $1 million are reviewed when necessary based on their performance, primarily when such loan are delinquent. Loans with relationships greater than $1 million are reviewed at least annually. Loan relationships with a higher risk profile or classified as special mention or substandard are reviewed at least quarterly. The Corporation reviews credit quality indicators on at least an annual basis and last completed this review in conjunction with the period ended December 31, 2020. The following is a description of the internal risk ratings and the likelihood of loss related to the credit quality of Commercial, financial and agricultural loans, Paycheck Protection Program loans, Real-estate commercial loans, Real-estate construction loans and Real estate-residential secured for a business purpose loans. 1. Pass—Loans considered satisfactory with no indications of deterioration 2. Special Mention—Potential weakness that deserves management's close attention 3. Substandard—Well-defined weakness or weaknesses that jeopardize the liquidation of the debt 4. Doubtful—Collection or liquidation in-full, on the basis of current existing facts, conditions and values, highly questionable and improbable Based on the most recent analysis performed, the following table presents the recorded investment in loans and leases held for investment for Commercial, financial and agricultural loans, Paycheck Protection Program loans, Real-estate commercial loans, Real-estate construction loans and Real estate-residential secured for a business purpose loans by credit quality indicator at December 31, 2020 under ASC 326. Term Loans Amortized Cost Basis by Origination Year (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total At December 31, 2020 Commercial, Financial and Agricultural Risk Rating 1. Pass $ 162,547 $ 93,967 $ 74,722 $ 38,906 $ 17,371 $ 56,053 $ 427,336 $ 870,902 2. Special Mention 2,723 783 316 500 777 1,144 8,318 14,561 3. Substandard — 430 362 28 — 627 5,755 7,202 Total $ 165,270 $ 95,180 $ 75,400 $ 39,434 $ 18,148 $ 57,824 $ 441,409 $ 892,665 Paycheck Protection Program Risk Rating 1. Pass $ 483,773 $ — $ — $ — $ — $ — $ — $ 483,773 2. Special Mention — — — — — — — — 3. Substandard — — — — — — — — Total $ 483,773 $ — $ — $ — $ — $ — $ — $ 483,773 Real Estate-Commercial Risk Rating 1. Pass $ 1,084,157 $ 481,997 $ 223,646 $ 268,236 $ 143,041 $ 157,503 $ 43,008 $ 2,401,588 2. Special Mention 6,220 10,076 3,498 — 1,250 5,870 1,247 28,161 3. Substandard 3,803 3,998 709 11,383 1,207 6,690 1,333 29,123 Total $ 1,094,180 $ 496,071 $ 227,853 $ 279,619 $ 145,498 $ 170,063 $ 45,588 $ 2,458,872 Real Estate-Construction Risk Rating 1. Pass $ 116,840 $ 59,507 $ 39,009 $ 113 $ 2,950 $ — $ 3,711 $ 222,130 2. Special Mention 21,225 — — — — — — 21,225 3. Substandard — — — — — — — — Total $ 138,065 $ 59,507 $ 39,009 $ 113 $ 2,950 $ — $ 3,711 $ 243,355 Real Estate-Residential Secured for Business Purpose Risk Rating 1. Pass $ 118,925 $ 72,149 $ 52,775 $ 43,347 $ 37,768 $ 25,170 $ 25,510 $ 375,644 2. Special Mention 1,354 — 188 77 175 130 — 1,924 3. Substandard 28 991 50 64 1,065 962 718 3,878 Total $ 120,307 $ 73,140 $ 53,013 $ 43,488 $ 39,008 $ 26,262 $ 26,228 $ 381,446 Totals By Risk Rating 1. Pass $ 1,966,242 $ 707,620 $ 390,152 $ 350,602 $ 201,130 $ 238,726 $ 499,565 $ 4,354,037 2. Special Mention 31,522 10,859 4,002 577 2,202 7,144 9,565 65,871 3. Substandard 3,831 5,419 1,121 11,475 2,272 8,279 7,806 40,203 Total $ 2,001,595 $ 723,898 $ 395,275 $ 362,654 $ 205,604 $ 254,149 $ 516,936 $ 4,460,111 The Corporation had no revolving loans which were converted to term loans included within recorded investment in loans and leases held for investment at December 31, 2020. The Corporation had no loans with a risk rating of Doubtful included within recorded investment in loans and leases held for investment at December 31, 2020. The following table presents by class, the recorded investment in loans and leases held for investment by credit quality indicator at December 31, 2019 under ASC 310. (Dollars in thousands) Commercial, Real Estate— Real Estate— Real Estate— Total At December 31, 2019 Grade: 1. Pass $ 911,848 $ 1,974,561 $ 201,424 $ 367,122 $ 3,454,955 2. Special Mention 18,843 24,199 20,987 3,769 67,798 3. Substandard 16,338 41,681 10,184 3,082 71,285 Total $ 947,029 $ 2,040,441 $ 232,595 $ 373,973 $ 3,594,038 The Corporation had no loans with a risk rating of Doubtful included in loans and leases held for investment at December 31, 2019. The Corporation monitors the credit risk profile by payment activity for the following classifications of loans and leases: Real estate-residential secured for personal purpose loans, Real estate-home equity secured for personal purpose loans, Loans to individuals and Lease financings. The Corporation reviews credit quality indicators on at least an annual basis and last completed this review in conjunction with the period ended December 31, 2020. Loans and leases past due 90 days or more, loans and leases on nonaccrual status and troubled debt restructured loans and lease modifications are considered nonperforming. Nonperforming loans and leases are reviewed monthly. Performing loans and leases have a nominal to moderate risk of loss. Performing loans and leases are reviewed only if the loan becomes 60 days or more past due. Based on the most recent analysis performed, the following table presents the recorded investment in loans and leases held for investment for Real estate-residential secured for personal purpose loans, Real estate-home equity secured for personal purpose loans, Loans to individuals and Lease financings by credit quality indicator at December 31, 2020 under ASC 326. Term Loans Amortized Cost Basis by Origination Year (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total At December 31, 2020 Real Estate-Residential Secured for Personal Purpose Payment Performance 1. Performing $ 191,987 $ 61,880 $ 56,314 $ 50,983 $ 38,975 $ 84,138 $ 1,237 $ 485,514 2. Nonperforming 666 — 56 — — 1,364 — 2,086 Total $ 192,653 $ 61,880 $ 56,370 $ 50,983 $ 38,975 $ 85,502 $ 1,237 $ 487,600 Real Estate-Home Equity Secured for Personal Purpose Payment Performance 1. Performing $ 1,195 $ 815 $ 829 $ 1,160 $ 518 $ 2,189 $ 158,803 $ 165,509 2. Nonperforming — — 198 — — 36 866 1,100 Total $ 1,195 $ 815 $ 1,027 $ 1,160 $ 518 $ 2,225 $ 159,669 $ 166,609 Loans to Individuals Payment Performance 1. Performing $ 1,795 $ 1,425 $ 970 $ 441 $ 220 $ 2,266 $ 20,180 $ 27,297 2. Nonperforming — — — — — 23 162 185 Total $ 1,795 $ 1,425 $ 970 $ 441 $ 220 $ 2,289 $ 20,342 $ 27,482 Lease Financings Payment Performance 1. Performing $ 72,173 $ 45,972 $ 30,679 $ 11,613 $ 3,616 $ 567 $ — $ 164,620 2. Nonperforming 12 182 5 205 7 8 — 419 Total $ 72,185 $ 46,154 $ 30,684 $ 11,818 $ 3,623 $ 575 $ — $ 165,039 Totals by Payment Performance 1. Performing $ 267,150 $ 110,092 $ 88,792 $ 64,197 $ 43,329 $ 89,160 $ 180,220 $ 842,940 2. Nonperforming 678 182 259 205 7 1,431 1,028 3,790 Total $ 267,828 $ 110,274 $ 89,051 $ 64,402 $ 43,336 $ 90,591 $ 181,248 $ 846,730 The Corporation had no revolving loans which were converted to term loans included within recorded investment in loans and leases held for investment at December 31, 2020. The following table presents by class, the recorded investment in loans and leases held for investment by performance status at December 31, 2019 under ASC 310. (Dollars in thousands) Real Estate— Real Estate— Loans to Lease Total At December 31, 2019 Performing $ 437,021 $ 172,954 $ 29,809 $ 148,866 $ 788,650 Nonperforming 2,038 1,481 74 555 4,148 Total $ 439,059 $ 174,435 $ 29,883 $ 149,421 $ 792,798 Allowance for Credit Losses on Loan and Leases and Recorded Investment in Loans and Leases The ACL on loans increased during the year ended December 31, 2020 primarily due changes in economic assumptions, which were inherently impacted by COVID-19, and loan growth. There were no changes to the reasonable and supportable forecast period, the reversion period, or any significant methodology changes during the year ended December 31, 2020. The following presents, by portfolio segment, a summary of the activity in the allowance for credit losses, loans and leases, for the years ended December 31, 2020, 2019 and 2018: (Dollars in thousands) Beginning balance, prior to adoption of ASU No. 2016-13 for CECL Adjustment to initially apply ASU No. 2016-13 for CECL Provision (recovery of provision) for credit losses Charge-offs Recoveries Ending balance For the Year Ended December 31, 2020 Allowance for credit losses, loans and leases: Commercial, Financial and Agricultural $ 8,759 $ 5,284 $ 680 $ (1,884) $ 745 $ 13,584 Real Estate-Commercial 15,750 6,208 33,090 (2,853) 35 52,230 Real Estate-Construction 2,446 29 823 — — 3,298 Real Estate-Residential Secured for Business Purpose 2,622 2,502 2,306 (188) 75 7,317 Real Estate-Residential Secured for Personal Purpose 2,713 (706) 1,229 (181) — 3,055 Real Estate-Home Equity Secured for Personal Purpose 1,076 (364) 449 — 15 1,176 Loans to Individuals 470 104 146 (267) 80 533 Lease Financings 1,311 (135) 750 (526) 301 1,701 Unallocated 184 — (34) N/A N/A 150 Total $ 35,331 $ 12,922 $ 39,439 $ (5,899) $ 1,251 $ 83,044 For the Year Ended December 31, 2019 Allowance for credit losses, loans and leases: Commercial, Financial and Agricultural $ 7,983 $ — $ 2,374 $ (1,965) $ 367 $ 8,759 Real Estate-Commercial and Construction 13,903 — 4,602 (402) 93 18,196 Real Estate-Residential Secured for Business Purpose 2,236 — 396 (122) 112 2,622 Real Estate-Residential and Home Equity Secured for Personal Purpose 3,199 — 781 (212) 21 3,789 Loans to Individuals 484 — 246 (335) 75 470 Lease Financings 1,288 — 206 (427) 244 1,311 Unallocated 271 — (87) N/A N/A 184 Total $ 29,364 $ — $ 8,518 $ (3,463) $ 912 $ 35,331 For the Year Ended December 31, 2018 Allowance for credit losses, loans and leases: Commercial, Financial and Agricultural $ 6,742 $ — $ 13,756 $ (14,655) $ 2,140 $ 7,983 Real Estate-Commercial and Construction 9,839 — 3,771 (40) 333 13,903 Real Estate-Residential Secured for Business Purpose 1,661 — 326 (31) 280 2,236 Real Estate-Residential and Home Equity Secured for Personal Purpose 1,754 — 1,367 — 78 3,199 Loans to Individuals 373 — 376 (353) 88 484 Lease Financings 1,132 — 497 (572) 231 1,288 Unallocated 54 — 217 N/A N/A 271 Total $ 21,555 $ — $ 20,310 $ (15,651) $ 3,150 $ 29,364 N/A – Not applicable Charge-offs for the year ended December 31, 2018 included a charge-off of $12.7 million during the second quarter of 2018 for a commercial loan relationship related to fraudulent activities by employees of the borrower. The Bank owned a participating interest which originally totaled $13.0 million in an approximately $80.0 million commercial lending facility. The charge-off represented the entire principal amount owed to the Bank. During the fourth quarter of 2018, the Bank recovered $1.8 million from this previously charged-off loan. The net charge-off for this loan for the year ended December 31, 2018 was $10.9 million. The following presents, by portfolio segment, the balance in the ACL on loans and leases disaggregated on the basis of whether the loan or lease was measured for credit loss as a pooled loan or lease or if it was individually analyzed for a reserve at December 31, 2020 and 2019: Allowance for credit losses, loans and leases Loans and leases held for investment (Dollars in thousands) Ending balance: individually analyzed Ending balance: pooled Total ending balance Ending balance: individually analyzed Ending balance: pooled Loans measured at fair value Total ending balance At December 31, 2020 Commercial, Financial and Agricultural $ 535 $ 13,049 $ 13,584 $ 2,827 $ 889,838 $ — $ 892,665 Paycheck Protection Program — — — — 483,773 — 483,773 Real Estate-Commercial — 52,230 52,230 22,739 2,435,946 187 2,458,872 Real Estate-Construction — 3,298 3,298 — 243,355 — 243,355 Real Estate-Residential Secured for Business Purpose 24 7,293 7,317 2,786 378,660 — 381,446 Real Estate-Residential Secured for Personal Purpose 26 3,029 3,055 2,086 485,514 — 487,600 Real Estate-Home Equity Secured for Personal Purpose — 1,176 1,176 1,047 165,562 — 166,609 Loans to Individuals — 533 533 — 27,482 — 27,482 Lease Financings — 1,701 1,701 — 165,039 — 165,039 Unallocated N/A 150 150 N/A N/A N/A N/A Total $ 585 $ 82,459 $ 83,044 $ 31,485 $ 5,275,169 $ 187 $ 5,306,841 At December 31, 2019 Commercial, Financial and Agricultural $ 44 $ 8,715 $ 8,759 $ 3,442 $ 943,587 $ — $ 947,029 Real Estate-Commercial and Construction 1,562 16,634 18,196 28,185 2,244,534 317 2,273,036 Real Estate-Residential Secured for Business Purpose 306 2,316 2,622 2,980 370,993 — 373,973 Real Estate-Residential and Home Equity Secured for Personal Purpose 196 3,593 3,789 3,519 609,975 — 613,494 Loans to Individuals — 470 470 — 29,883 — 29,883 Lease Financings — 1,311 1,311 277 149,144 — 149,421 Unallocated N/A 184 184 N/A N/A N/A N/A Total $ 2,108 $ 33,223 $ 35,331 $ 38,403 $ 4,348,116 $ 317 $ 4,386,836 N/A – Not applicable Troubled Debt Restructured Loans The following presents, by class of loans, information regarding accruing and nonaccrual loans that were restructured during the years ended December 31, 2020 and 2019: For the Years Ended December 31, 2020 2019 (Dollars in thousands) Number Pre- Post- Number Pre- Post- Accruing Troubled Debt Restructured Loans: Real estate—home equity secured for personal purpose — $ — $ — 1 $ 55 $ 55 Total — $ — $ — 1 $ 55 $ 55 Nonaccrual Troubled Debt Restructured Loans: Commercial, financial and agricultural 1 $ 619 $ 619 4 $ 1,475 $ 1,475 Real estate—commercial real estate — — — 2 12,414 12,414 Real estate—residential secured for personal purpose 1 544 544 — — — Total 2 $ 1,163 $ 1,163 6 $ 13,889 $ 13,889 The table above includes two nonaccrual troubled debt restructured loans totaling $11.6 million which were modified via an incremental extension of credit to an entity which was experiencing financial difficulties during the year ended December 31, 2019. The table above also includes three nonaccrual troubled debt restructured loans totaling $2.3 million to one borrower which were modified via the execution of a forbearance agreement during the year ended December 31, 2019. All loans were on nonaccrual status at the time of modification. The Corporation modified certain loans and leases via principal and/or interest deferrals in accordance with Section 4013 of the CARES Act and the Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customer Affected by the Coronavirus during the year ended December 31, 2020 and have not categorized these modifications as troubled debt restructurings. These loans and leases had a combined principal balance of approximately $68.0 million as of December 31, 2020, which represents approximately 1.4% of the loan portfolio, excluding PPP loans. The following presents, by class of loans, information regarding the types of concessions granted on accruing and nonaccrual loans that were restructured during the years ended December 31, 2020 and 2019 (excluding loans modified in accordance with Section 4013 of the CARES Act and the Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customer Affected by the Coronavirus ): Maturity Date Amortization Period Extension Incremental Extension of Credit Total Concessions (Dollars in thousands) No. of Amount No. of Amount No. of Amount No. of Amount For the Year Ended December 31, 2020 Accruing Troubled Debt Restructured Loans: Total — $ — — $ — — $ — — $ — Nonaccrual Troubled Debt Restructured Loans: Commercial, financial and agricultural — $ — 1 $ 619 — $ — 1 $ 619 Real estate—residential secured for personal purpose — — 1 544 — — 1 544 Total — $ — 2 $ 1,163 — $ — 2 $ 1,163 For the Year Ended December 31, 2019 Accruing Troubled Debt Restructured Loans: Real estate—home equity secured for personal purpose — $ — 1 $ 55 — $ — 1 $ 55 Total — $ — 1 $ 55 — $ — 1 $ 55 Nonaccrual Troubled Debt Restructured Loans: Commercial, financial and agricultural 1 $ 19 2 $ 956 1 $ 500 4 $ 1,475 Real estate—commercial real estate — — 1 1,313 1 11,101 2 12,414 Total 1 $ 19 3 $ 2,269 2 $ 11,601 6 $ 13,889 The following presents, by class of loans, information regarding accruing and nonaccrual troubled debt restructured loans, for which there were payment defaults within twelve months of the restructuring date: For the Years Ended December 31, 2020 2019 (Dollars in thousands) Number Recorded Number Recorded Accruing Troubled Debt Restructured Loans: Total — $ — — $ — Nonaccrual Troubled Debt Restructured Loans: Commercial, financial and agricultural — $ — 1 $ 17 Total — $ — 1 $ 17 The following presents, by class of loans, information regarding consumer mortgages collateralized by residential real estate property that are in the process of foreclosure at December 31, 2020 and 2019: (Dollars in thousands) At December 31, 2020 At December 31, 2019 Real estate-residential secured for personal purpose $ 64 $ 714 Real estate-home equity secured for personal purpose — 1,058 Total $ 64 $ 1,772 The following presents foreclosed residential real estate property included in other real estate owned at December 31, 2020 and 2019. (Dollars in thousands) At December 31, 2020 At December 31, 2019 Foreclosed residential real estate $ — $ 71 Lease Financings The Corporation, through Univest Capital, Inc., an equipment financing business and a subsidiary of the Bank, provides lease financing to customers primarily in the form of sales-type leases with fixed payment terms and $1.00 buyout clauses. A minor number of contracts are classified as either direct financing leases or operating leases. The fair value of the identified assets within sales-type and direct financing leases are equal to the carrying amount such that there is no profit or loss recorded or deferred upon lease commencement. All receivables related to the equipment financing business are recorded within lease financings. The following presents the maturity analysis of lease financing receivables: (Dollars in thousands) At December 31, 2020 At December 31, 2019 2020 N/A $ 57,515 2021 61,724 45,510 2022 49,970 32,233 2023 35,631 18,345 2024 20,821 6,639 2025 8,319 957 Thereafter 2,763 1,302 Total lease financing receivables 179,228 162,501 Plus: Unguaranteed residual 914 886 Plus: Initial direct costs 2,567 2,374 Less: Imputed interest (17,670) (16,340) Net investment in lease financing receivables $ 165,039 $ 149,421

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and Equipment The following table reflects the components of premises and equipment: At December 31, (Dollars in thousands) 2020 2019 Land and land improvements $ 14,549 $ 14,292 Premises and improvements 55,703 54,158 Furniture and equipment 30,374 28,678 Total cost 100,626 97,128 Less: accumulated depreciation (44,990) (40,452) Net book value $ 55,636 $ 56,676

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The Corporation has goodwill from acquisitions which is deemed to be an indefinite intangible asset and is not amortized. In accordance with ASC Topic 350, goodwill is tested at least annually for impairment at the reporting unit level. The Corporation performs an annual test of goodwill for impairment during the fourth quarter of each year. The Corporation concluded there was no impairment of goodwill during 2018 through 2020. The Corporation also has core deposit and customer-related intangibles and servicing rights, which are not deemed to have an indefinite life and therefore will continue to be amortized over their useful life using the present value of projected cash flows. The amortization of intangible assets for the years ended December 31, 2020, 2019 and 2018 was $4.5 million, $3.5 million and $3.4 million, respectively. The Corporation also performs an annual test of other intangible assets for impairment during the fourth quarter of each year. The Corporation concluded there was no impairment of other intangible assets during 2018 through 2020. Changes in the carrying amount of the Corporation's goodwill by business segment for the years ended December 31, 2020 and 2019 were as follows: (Dollars in thousands) Banking Wealth Management Insurance Consolidated Balance at December 31, 2018 $ 138,476 $ 15,434 $ 18,649 $ 172,559 Addition to goodwill from acquisitions — — — — Balance at December 31, 2019 138,476 15,434 18,649 172,559 Addition to goodwill from acquisitions — — — — Balance at December 31, 2020 $ 138,476 $ 15,434 $ 18,649 $ 172,559 The following table reflects the components of intangible assets at the dates indicated: At December 31, 2020 At December 31, 2019 (Dollars in thousands) Gross Carrying Amount Accumulated Amortization (1) Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortized intangible assets: Core deposit intangibles $ 6,788 $ 4,787 $ 2,001 $ 6,788 $ 4,026 $ 2,762 Customer related intangibles 7,604 7,147 457 8,819 7,923 896 Servicing rights 22,354 15,946 6,408 19,160 12,534 6,626 Total amortized intangible assets $ 36,746 $ 27,880 $ 8,866 $ 34,767 $ 24,483 $ 10,284 (1) Included within accumulated amortization is a valuation allowance of $87 thousand on mortgage servicing rights at December 31, 2020. There was no valuation allowance as of December 31, 2019. The estimated aggregate amortization expense for core deposit and customer-related intangibles for each of the five succeeding fiscal years and thereafter follows: (Dollars in thousands) Year Amount 2021 $ 923 2022 666 2023 409 2024 267 2025 144 Thereafter 49 Total $ 2,458 The aggregate fair value of mortgage servicing rights was $6.7 million and $9.2 million at December 31, 2020 and 2019, respectively. The fair value of these rights was determined using a discount rate of 10.0% at December 31, 2020 and 2019. Changes in the servicing rights balance are summarized as follows: For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Beginning of period $ 6,626 $ 6,768 $ 6,573 Servicing rights capitalized 3,194 1,787 1,458 Amortization of servicing rights (3,325) (1,929) (1,263) Changes in valuation allowance (87) — — End of period $ 6,408 $ 6,626 $ 6,768 Loans serviced for others $ 1,200,742 $ 1,080,905 $ 1,031,506 Changes in the valuation allowance for mortgage servicing rights are summarized as follows: For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Valuation allowance, beginning of period $ — $ — $ — Additions (87) — — Valuation allowance, end of period $ (87) $ — $ — The estimated amortization expense of servicing rights for each of the five succeeding fiscal years and thereafter is as follows: (Dollars in thousand) Year Amount 2021 $ 1,675 2022 1,250 2023 931 2024 693 2025 427 Thereafter 1,432 Total $ 6,408
Activity In Valuation Allowance For Mortgage Servicing Rights Table	Changes in the valuation allowance for mortgage servicing rights are summarized as follows: For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Valuation allowance, beginning of period $ — $ — $ — Additions (87) — — Valuation allowance, end of period $ (87) $ — $ —

Accrued Interest Receivable and

Accrued Interest Receivable and Other Assets	12 Months Ended
	Dec. 31, 2020
Text Block [Abstract]
Accrued Interest Receivable and Other Assets	Accrued Interest Receivable and Other Assets The following table provides the details of accrued interest receivable and other assets: At December 31, (Dollars in thousands) 2020 2019 Other real estate owned $ 7,355 $ 516 Accrued interest receivable 16,475 14,100 Accrued income and other receivables 7,340 6,973 Fair market value of derivative financial instruments 2,894 399 Other prepaid expenses 11,470 13,936 Net deferred tax assets 16,514 3,615 Other 3,291 680 Total accrued interest and other assets $ 65,339 $ 40,219

Deposits

Deposits	12 Months Ended
	Dec. 31, 2020
Banking and Thrift, Other Disclosures [Abstract]
Deposits	Deposits Deposits and their respective weighted average interest rate at December 31, 2020 and 2019 consisted of the following: December 31, 2020 2019 Weighted Average Interest Rate Amount Weighted Average Interest Rate Amount (Dollars in thousands) Noninterest-bearing deposits — % $ 1,690,663 — % $ 1,279,681 Demand deposits 0.22 2,070,183 0.96 1,677,682 Savings deposits 0.08 918,094 0.37 796,702 Time deposits 1.30 563,775 1.95 606,010 Total 0.24 % $ 5,242,715 0.71 % $ 4,360,075 The aggregate amount of time deposits in denominations of $100 thousand or more was $296.7 million at December 31, 2020 and $293.2 million at December 31, 2019. Deposits are insured up to applicable limits by the Deposit Insurance Fund of the FDIC. Deposit insurance per account owner is currently up to $250 thousand. The aggregate amount of time deposits in denominations over $250 thousand was $161.6 million at December 31, 2020 and $143.0 million at December 31, 2019. At December 31, 2020, the scheduled maturities of time deposits are as follows: (Dollars in thousands) Year Amount Due in 2021 $ 12,178 Due in 2022 304,928 Due in 2023 93,332 Due in 2024 115,886 Due in 2025 24,000 Thereafter 13,451 Total $ 563,775

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Borrowings	Borrowings The following is a summary of borrowings by type. Short-term borrowings consist of overnight borrowings and term borrowings with an original maturity of one year or less. Balance at End of Year Weighted Average Interest Rate Maximum Amount Outstanding at Month End During the Year Average Amount Outstanding During the Year Weighted Average Interest Rate During the Year (Dollars in thousands) 2020 Short-term borrowings: FHLB borrowings $ — — % $ — $ 5,048 1.68 % Federal funds purchased — — 40,000 1,388 1.64 Customer repurchase agreements 17,906 0.05 % 39,615 20,747 0.05 Other short-term borrowings — — 192,936 59,475 0.35 Long-term debt: FHLB advances $ 110,000 1.42 % $ 200,000 $ 181,722 1.54 % Subordinated notes $ 183,515 4.96 % $ 193,481 $ 134,949 5.01 % 2019 Short-term borrowings: FHLB borrowings $ — — % $ 190,740 $ 23,485 2.57 % Federal funds purchased — — 8,500 15,217 2.63 Customer repurchase agreements 18,680 0.05 22,995 18,180 0.05 Long-term debt: FHLB advances $ 140,000 2.04 % $ 150,000 $ 139,397 2.00 % Security repurchase agreements 10,098 2.07 20,308 16,969 2.61 Subordinated notes $ 94,818 5.32 % $ 94,818 $ 94,695 5.33 % The Corporation, through the Bank, has a credit facility with the FHLB with a maximum borrowing capacity of approximately $2.2 billion. All borrowings and letters of credit from the FHLB are secured by qualifying commercial real estate and residential mortgage loans, investments and other assets. At December 31, 2020 and 2019, the Bank had outstanding short-term letters of credit with the FHLB totaling $669.7 million and $535.6 million, respectively, which were utilized to collateralize public fund deposits and other secured deposits. The maximum borrowing capacity with the FHLB changes as a function of the Bank's qualifying collateral assets as well as the FHLB's internal credit rating of the Bank. The available borrowing capacity from the FHLB totaled $1.4 billion at December 31, 2020. The Corporation, through the Bank, holds collateral at the Federal Reserve Bank of Philadelphia to provide access to the Discount Window Lending program. The collateral, consisting of investment securities, was valued at $40.7 million and $94.8 million at December 31, 2020 and 2019, respectively. At December 31, 2020 and 2019, the Corporation had no outstanding borrowings under the Discount Window Lending program. The Corporation has a $10.0 million committed line of credit with a correspondent bank. At December 31, 2020 and 2019, the Corporation had no outstanding borrowings under this line. The Corporation and the Bank have a total of $2.2 billion and $1.9 billion of committed borrowing capacity at December 31, 2020 and 2019, respectively, of which $1.5 billion and $1.2 billion was available as of December 31, 2020 and 2019, respectively. The Corporation, through the Bank, also maintained uncommitted funding sources from correspondent banks of $460.0 million and $504.0 million at December 31, 2020 and 2019, respectively, which were fully available. Future availability under these lines is subject to the prerogatives of the granting banks and may be withdrawn at will. Long-term advances with the FHLB of Pittsburgh mature as follows: (Dollars in thousands) As of December 31, 2020 Weighted Average Rate 2021 $ 15,000 1.93 % 2022 — — 2023 35,000 1.94 2024 60,000 0.98 2025 — — Thereafter — — Total $ 110,000 1.42 % Subordinated Notes On August 5, 2020, the Corporation issued $100.0 million aggregate principal amount of 5.00% fixed-to-floating rate subordinated notes (the "2020 Notes") due 2030. The net proceeds, which approximated $98.4 million, will be used for general corporate purposes. The 2020 Notes bear interest at an annual rate of 5.00%, payable semi-annually in arrears commencing on February 15, 2021. The last interest payment date for the fixed rate period will be August 15, 2025. From and including August 15, 2025 to, but excluding, August 15, 2030 or the date of earlier redemption, the Notes will bear interest at an annual floating rate of interest equivalent to the expected Benchmark rate, which is expected to be the Three-Month Term SOFR, plus 495.2 basis points, payable quarterly in arrears, commencing on November 15, 2025. Notwithstanding the foregoing, if the Benchmark rate is less than zero, the Benchmark rate shall be deemed to be zero. The related issuance costs of $1.6 million are being amortized on a straight-line basis (which approximates the level-yield method) into interest expense over five years. The Corporation may redeem the 2020 Notes (i) in whole or in part beginning with the interest payment date of August 15, 2025, and on any interest payment date thereafter or (ii) in whole, but not in part, at any time within 90 days upon the occurrence of certain tax, regulatory capital and Investment Company Act of 1940 events. The redemption price for any redemption is 100% of the principal amount of the subordinated notes being redeemed, plus accrued and unpaid interest thereon to, but excluding, the date of redemption. Any redemption of the subordinated notes will be subject to the receipt of the approval of the Board of Governors of the Federal Reserve System to the extent then required under applicable laws or regulations. On July 1, 2016, the Corporation issued $45.0 million in aggregate principal amount of fixed-to-floating rate subordinated notes due 2026 (the "2016 Notes") in a private placement transaction to institutional accredited investors. The net proceeds of the offering approximated $44.5 million. The 2016 Notes bear interest at an annual fixed rate of 5.00% from the date of issuance until June 30, 2021, or any early redemption date. From June 30, 2021 to the maturity date of June 30, 2026 (or any early redemption date), the 2016 Notes will bear interest at an annual rate equal to three-month LIBOR rate plus 3.90%. Beginning with the interest payment date of June 30, 2021, the Corporation has the option on each interest payment date, subject to approval of the Federal Reserve Board, to redeem the 2016 Notes in whole or in part at a redemption price equal to 100% of the principal amount of the redeemed 2016 Notes, plus accrued and unpaid interest to the date of the redemption. The Corporation may also redeem the 2016 Notes, in whole but not in part, at any time upon the occurrence of certain tax, regulatory capital and Investment Company Act of 1940 Act events, subject in each case to the approval of the Federal Reserve. On March 30, 2015, the Corporation issued $50.0 million in aggregate principal amount of fixed-to-floating rate subordinated notes due 2025 (the "2015 Notes") in a private placement transaction to institutional accredited investors. The net proceeds of the offering approximated $49.3 million, The 2015 Notes bear interest at an annual fixed rate of 5.10% from the date of issuance until March 30, 2020, or any early redemption date. From March 30, 2020 to the maturity date of March 30, 2025 (or any early redemption date), the 2015 Notes will bear interest at an annual rate equal to the three-month LIBOR rate plus 3.544%. Beginning with the interest payment date of March 30, 2020, the Corporation has the option on each interest payment date, subject to approval of the Federal Reserve Board, to redeem the 2015 Notes in whole or in part at a redemption price equal to 100% of the principal amount of the redeemed 2015 Notes, plus accrued and unpaid interest to the date of the redemption. The Corporation may also redeem the 2015 Notes, in whole, at any time, or in part from time to time upon the occurrence of certain tax, regulatory capital and Investment Company Act of 1940 Act events, subject in each case to the approval of the Federal Reserve. As of December 31, 2020, the Corporation opted to redeem $10.0 million of principal from the outstanding 2015 Notes. The subordinated notes qualify as Tier 2 capital for regulatory capital purposes for the first five years of the notes' terms. The Tier 2 capital benefit is phased out at 20% per year after the fifth year (from years six to ten) and have no benefit in the tenth year.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for federal and state income taxes included in the accompanying consolidated statement of income consists of the following: For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Current: Federal $ 18,498 $ 15,043 $ 9,770 State 1,337 1,098 972 Deferred: Federal (9,288) (1,068) (862) State (566) (739) 263 $ 9,981 $ 14,334 $ 10,143 The provision for income taxes differs from the expected statutory provision as follows: For the Years Ended December 31, 2020 2019 2018 Expected provision at statutory rate 21.0 % 21.0 % 21.0 % Difference resulting from: Tax exempt interest income, net of disallowance (3.8) (3.2) (4.0) Increase in value of bank owned life insurance assets (1.1) (0.8) (1.1) Stock-based compensation 0.2 — (0.2) State income taxes, net of federal benefits 1.1 0.4 1.6 Adjustment to deferred tax assets and liabilities for enacted changes in tax laws and rates — — (0.5) Changes in valuation allowance 0.2 0.2 0.1 Other (0.1) 0.3 (0.2) Effective tax rate 17.5 % 17.9 % 16.7 % On March 27, 2020, the CARES Act was enacted into law in response to the COVID-19 pandemic. The CARES Act contains numerous income tax provisions, such as enhanced interest deductibility, repeal of the 80% limitation with respect to net operating losses arising in taxable years 2018, 2019 and 2020, and additional depreciation deductions related to qualified improvement property. The Corporation has concluded its analysis of these provisions as of December 31, 2020 and determined they did not have a material impact on the Corporation's income taxes for 2020. On December 22, 2017, the SEC released Staff Accounting Bulletin No. 118 (SAB 118) to address any uncertainty or diversity of views in practice in accounting for the income tax effects of the Tax Cuts and Jobs Act ("TCJA") in situations where a registrant did not have the necessary information available, prepared, or analyzed in reasonable detail to complete this accounting in the reporting period that includes the enactment date. SAB 118 allowed for a measurement period not to extend beyond one year from the TCJA's enactment date to complete the necessary accounting. The Corporation completed the calculations of the provisional items with the completion of the 2017 tax returns. The impact of the completed calculations to the re-measurement of the Corporation's net deferred tax asset resulted in an income tax benefit of $300 thousand which the Corporation recorded in 2018. The Corporation concluded its analysis and determined that no adjustments were necessary to deferred tax assets, representing future deductions for accrued compensation that may be subject to new limitations under Internal Revenue Code Section 162(m) which, generally, limits the annual deduction for certain compensation paid to certain employees to $1.0 million. Retained earnings included $6.0 million at December 31, 2020, 2019 and 2018, which was originally generated by Fox Chase Bank (acquired in 2016), for which no provision for federal income tax has been made. This amount represents deductions for bad debt reserves for tax purposes, which were only allowed to savings institutions that met certain criteria prescribed by the Internal Revenue Code of 1986, as amended. The Small Business Job Protection Act of 1996 (the "Act") eliminated the special bad debt deduction granted solely to thrifts. Under the terms of the Small Business Job Protection Act, there would be no recapture of the pre-1988 (base year) reserves. However, these pre-1988 reserves would be subject to recapture under the rules of the Internal Revenue Code if the Corporation pays a cash dividend in excess of cumulative retained earnings or liquidates. At December 31, 2020 and 2019, the Corporation had no material unrecognized tax benefits or accrued interest and penalties recorded. The Corporation does not expect the total amount of unrecognized tax benefits to significantly increase within the next twelve months. Interest and penalties are recorded in noninterest expense in the year they are assessed. For tax purposes, interest is treated as a deductible expense and penalties are treated as a non-deductible expense. The Corporation and its subsidiaries are subject to U.S. federal income tax, as well as income tax of the state of Pennsylvania and various other state and local jurisdictions. The Corporation and its subsidiaries are generally no longer subject to examination by federal, state and local taxing authorities for years prior to December 31, 2017. Deferred income taxes reflect the tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Deferred state taxes are combined with federal deferred taxes (net of the impact of deferred state tax on the deferred federal tax) and are shown in the table below by major category. The Corporation has a state net operating loss carry-forward of $71.2 million which will begin to expire in 2021 if not utilized. A valuation allowance at December 31, 2020 and 2019 was attributable to deferred tax assets generated in certain state jurisdictions for which management believes it is more likely than not that such deferred tax assets will not be realized. Other than the valuation allowance on certain state deferred tax assets, management has determined that no additional valuation allowance is necessary for deferred tax assets because it is more likely than not that these assets will be realized through future reversals of existing temporary differences and through future taxable income. The Corporation will continue to review the criteria related to the recognition of deferred tax assets on a regular basis. The assets and liabilities giving rise to the Corporation's deferred tax assets and liabilities are as follows: At December 31, (Dollars in thousands) 2020 2019 Deferred tax assets: Allowance for credit losses, loans and leases $ 18,113 $ 7,680 Deferred compensation 1,625 1,834 Actuarial adjustments on retirement benefits* 5,408 4,868 State net operating losses 5,621 5,071 Other-than-temporary impairments on equity securities 151 151 Net unrealized holding losses on securities available-for-sale and swaps* 483 915 Lease liability 8,227 8,177 Deferred loan fees and costs 583 — Other deferred tax assets 2,148 1,146 Gross deferred tax assets 42,359 29,842 Valuation allowance (4,766) (4,284) Total deferred tax assets, net of valuation allowance 37,593 25,558 Deferred tax liabilities: Mortgage servicing rights 1,370 1,404 Retirement plans 5,309 5,299 Deferred loan fees and costs — 1,330 Acquisition-related fair value adjustments 1,236 1,515 Intangible assets 2,580 1,956 Accounting method change adjustment 385 768 Depreciation 888 1,137 Right of use asset 7,491 7,481 Other deferred tax liabilities 1,820 1,053 Total deferred tax liabilities 21,079 21,943 Net deferred tax assets $ 16,514 $ 3,615 * Represents the amount of deferred taxes recorded in accumulated other comprehensive income.

Retirement Plans and Other Post

Retirement Plans and Other Postretirement Benefits	12 Months Ended
	Dec. 31, 2020
Retirement Benefits [Abstract]
Retirement Plans and Other Postretirement Benefits	Retirement Plans and Other Postretirement Benefits Information with respect to the Retirement Plans and Other Postretirement Benefits follows: Retirement Plans Other Postretirement Benefits (Dollars in thousands) 2020 2019 2020 2019 Change in benefit obligation: Benefit obligation at beginning of year $ 53,685 $ 46,868 $ 3,069 $ 2,283 Service cost 477 436 109 67 Interest cost 1,692 1,905 96 94 Actuarial loss 6,423 7,104 377 731 Benefits paid (2,846) (2,628) (111) (106) Benefit obligation at end of year $ 59,431 $ 53,685 $ 3,540 $ 3,069 Change in plan assets: Fair value of plan assets at beginning of year $ 51,607 $ 45,379 $ — $ — Actual return on plan assets 6,306 8,696 — — Benefits paid (2,846) (2,628) (111) (106) Corrective payment 140 — — — Employer contribution and non-qualified benefit payments 159 160 111 106 Fair value of plan assets at end of year $ 55,366 $ 51,607 $ — $ — Funded status (4,065) (2,078) (3,540) (3,069) Unrecognized net actuarial loss 24,526 22,433 989 638 Net amount recognized $ 20,461 $ 20,355 $ (2,551) $ (2,431) Information for the pension plan with an accumulated benefit obligation in excess of the fair value of plan assets at December 31, 2020 is shown below. Information for December 31, 2019 is shown for comparative purposes. At December 31, (Dollars in thousands) 2020 2019 Projected benefit obligation $ 57,116 $ 51,443 Accumulated benefit obligation 55,642 48,629 Fair value of plan assets 55,366 51,607 Components of net periodic benefit cost were as follows: Retirement Plans Other Postretirement Benefits (Dollars in thousands) 2020 2019 2018 2020 2019 2018 Service cost $ 477 $ 436 $ 560 $ 109 $ 67 $ 88 Interest cost 1,692 1,905 1,760 96 94 92 Expected loss on plan assets (3,291) (3,061) (3,287) — — — Amortization of net actuarial loss 1,176 1,176 1,120 26 — 4 Accretion of prior service cost — (181) (283) — — — Net periodic benefit cost (income) $ 54 $ 275 $ (130) $ 231 $ 161 $ 184 The components of net periodic benefit cost other than the service cost component are included in other noninterest expense in the consolidated statement of income. (Dollars in thousands) Retirement Plans Other Postretirement Benefits Expected amortization expense for 2021: Amortization of net actuarial loss $ 1,270 $ 46 Accretion of prior service cost — — During 2021, the Corporation expects to contribute approximately $156 thousand to the Retirement Plans and approximately $94 thousand to Other Postretirement Benefits. The following benefits payments, which reflect expected future service, as appropriate, are expected to be paid: (Dollars in thousands) Retirement Plans Other Postretirement Benefits For the fiscal year ending: 2021 $ 2,956 $ 94 2022 2,985 96 2023 3,049 102 2024 3,063 107 2025 3,050 109 Years 2026-2030 15,336 703 Total $ 30,439 $ 1,211 Weighted-average assumptions used to determine benefit obligations at December 31, 2020 and 2019 were as follows: Retirement Plans Other Postretirement Benefits 2020 2019 2020 2019 Assumed discount rate 2.4 % 3.2 % 2.4 % 3.2 % Assumed salary increase rate 3%-6% 3% - 6% — — The benefit obligation for all plans at December 31, 2020 was based on the Pri-2012 White Collar Dataset Mortality Table with scale MP-2020 fully generational published by the Society of Actuaries. The discount rate is based on matching the Plan's projected cash flows to the spot rates in FTSE Pension Above Median Double-A Curve as of the disclosure date. The assumed salary increase considers available service years from the valuation date through the participant's normal retirement date. Weighted-average assumptions used to determine net periodic costs for the years ended December 31, 2020 and 2019 were as follows: Retirement Plans Other Postretirement Benefits 2020 2019 2020 2019 Assumed discount rate 3.2 % 4.2 % 3.2 % 4.2 % Assumed long-term rate of investment return 6.5 % 7.0 % — — Assumed salary increase rate 3%-6% 3% - 6% — — The net periodic costs for the years ended December 31, 2020 and 2019 was based on the Pri-2012 White Collar Mortality Table projected to 2029 using scale MP-2019 published by the Society of Actuaries. The discount rate was based on matching the Plan's projected cash flows to the spot rates in FTSE Pension Above Median Double-A Curve as of the disclosure date. Historical investment returns is the basis used to determine the overall expected long-term rate of return on assets. The assumed salary increase considers available service years from the valuation date through the participant's normal retirement date. The Corporation's pension plan asset allocation at December 31, 2020 and 2019, by asset category was as follows: Percentage of Plan Assets at December 31, 2020 2019 Asset Category: Equity securities 60 % 61 % Debt securities 37 38 Other 3 1 Total 100 % 100 % Plan assets include marketable equity securities, corporate and government debt securities, and certificates of deposit. The investment strategy is to keep a 60% equity to 40% fixed income mix to achieve the overall expected long-term rate of return of 6.5%. Equity securities do not include any common stock of the Corporation. The major categories of assets in the Corporation's pension plan at year-end are presented in the following table. Assets are segregated by the level of the valuation inputs within the fair value hierarchy described in Note 18, "Fair Value Disclosures." Fair Value Measurements at December 31, (Dollars in thousands) 2020 2019 Level 1: Mutual funds $ 37,602 $ 34,332 Short-term investments 1,984 1,068 Level 2: U.S. government obligations 5,721 6,167 Corporate bonds 6,204 6,540 Certificates of deposit 3,855 3,500 Level 3: Total fair value of plan assets $ 55,366 $ 51,607 The Corporation sponsors a 401(k) deferred salary savings plan, which is a qualified defined contribution plan, and which covers all employees of the Corporation and its subsidiaries, and provides that the Corporation makes matching contributions as defined by the plan. Expense recorded by the Corporation for the 401(k) deferred salary savings plan for the years ended December 31, 2020, 2019 and 2018 was $1.8 million, $1.5 million, and $1.4 million, respectively. The Corporation sponsors a Supplemental Non-Qualified Pension Plan (SNQPP), which was established in 1981 prior to the existence of the 401(k) deferred salary savings plan, employee stock purchase plan and long-term incentive plans and therefore is not offered to new participants. All current participants are now retired. Expense recorded by the Corporation for the SNQPP for the years ended December 31, 2020, 2019 and 2018 was $224 thousand, $134 thousand and $215 thousand, respectively.

Stock-Based Incentive Plan

Stock-Based Incentive Plan	12 Months Ended
	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Stock-Based Incentive Plan	Stock-Based Incentive Plan The Corporation maintains the 2013 Long-Term Incentive Plan, which replaced the expired 2003 Long-Term Incentive Plan. In December 2018, the Corporation's Board of Directors approved an Amended and Restated Univest 2013 Long-Term Incentive Plan to permit the issuance of restricted stock units. Beginning in 2019, the Corporation issued to directors and employees ("grantees") restricted stock units rather than restricted stock awards or stock options, which were issued to grantees in prior reporting periods. Restricted stock units differ from restricted stock awards in that Corporation stock is not issued to grantees at the date of the grant and the grantee does not have voting or dividend rights during the vesting period. In the following schedules, issued restricted stock units have been combined with restricted stock awards, as the determination of the value at the grant date and methodology for recording stock-based compensation expense is the same. Under the Amended and Restated Univest 2013 Long-Term Incentive Plan, the Corporation may grant up to 3,706,946 options and restricted stock to employees and non-employee directors. The number of shares of common stock available for issuance under the plan is subject to adjustment, as described in the plan. This includes, in the event of any merger, reorganization, consolidation, recapitalization, stock dividend, or other change in corporate structure affecting the stock, substitution or adjustment in the aggregate number of shares reserved for issuance under the plan, in the number and option price of shares subject to outstanding options granted under the plan and in the number and price of shares subject to other awards, as described in the plan. The plan provides for the issuance of options to purchase common shares at prices not less than 100 percent of the fair market value on the date of option grant and have a contractual term of ten years. There were 2,509,615 share awards available for future grants at December 31, 2020 under the plan. At December 31, 2020, there were 453,785 options to purchase common stock and 305,704 unvested restricted stock awards and units outstanding under the plan. The following is a summary of the Corporation's stock option activity and related information for the year ended December 31, 2020: (Dollars in thousands, except per share data) Shares Under Option Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Life (Years) Aggregate Intrinsic Value at December 31, 2020 Outstanding at December 31, 2019 508,111 $ 24.83 Expired (2,000) 28.33 Forfeited (30,826) 26.10 Exercised (21,500) 17.84 Outstanding at December 31, 2020 453,785 25.06 5.8 $ 268 Exercisable at December 31, 2020 404,014 24.63 5.6 268 The following is a summary of nonvested stock options at December 31, 2020 including changes during the year: (Dollars in thousands, except per share data) Nonvested Stock Options Weighted Average Grant Date Fair Value Nonvested stock options at December 31, 2019 163,261 $ 6.54 Vested (106,131) 6.58 Forfeited (7,359) 6.48 Nonvested stock options at December 31, 2020 49,771 6.46 The Corporation's estimate of the fair value of a stock option is based on expectations derived from historical experience and may not necessarily equate to its market value when fully vested. The life of the option is based on historical factors which include the contractual term, vesting period, exercise behavior and employee turnover. The risk-free rate for periods within the expected term of the option is based on the U.S. Treasury strip rate in effect at the time of grant. Expected dividend yield is calculated based on the most recently declared quarterly dividend, multiplied by four, over the exercise price. Expected volatility is based on the historical volatility of the Corporation's stock over the expected life of the grant. The following aggregated assumptions were used to estimate the fair value of options granted for the periods indicated. The Corporation did not issue stock options during the years ended December 31, 2020 and 2019. For the Year Ended December 31, 2018 Expected option life in years 6.6 Risk free interest rate 2.80 % Expected dividend yield 2.81 % Expected volatility 27.15 % Fair value of options $6.46 In the following tables, issued restricted stock units have been combined with restricted stock awards, as the determination of the value at the grant date and methodology for recording stock-based compensation expense is the same for restricted stock units and restricted stock awards. The following is a summary of nonvested restricted stock awards and nonvested restricted stock units at December 31, 2020 including changes during the year: (Dollars in thousands, except per share data) Nonvested Stock Awards and Units Weighted Average Grant Date Fair Value Nonvested share awards at December 31, 2019 209,378 $ 26.76 Granted (1) 262,844 19.00 Vested (59,855) 27.17 Cancelled (2) (106,663) 23.39 Nonvested share awards and units at December 31, 2020 305,704 21.18 (1) Includes the impact of modifications of 83,764 awards at a weighted average fair value of $19.80. (2) Includes the impact of modifications of 83,764 awards at a weighted average fair value of $22.67. Certain information regarding restricted stock awards and units is summarized below for the periods indicated: For the Years Ended December 31, (Dollars in thousands, except per share data) 2020 2019 2018 Restricted stock awards and units granted 262,844 114,729 59,953 Weighted average grant date fair value $ 19.00 $ 25.65 $ 28.39 Intrinsic value of awards granted $ 4,994 $ 3,072 $ 1,293 Restricted stock awards and units vested 59,855 44,807 97,201 Weighted average grant date fair value $ 27.17 $ 21.65 $ 20.13 Intrinsic value of awards vested $ 1,375 $ 1,119 $ 2,709 The total unrecognized compensation expense and the weighted average period over which unrecognized compensation expense is expected to be recognized related to nonvested stock options and nonvested restricted stock awards and units at December 31, 2020 is presented below: (Dollars in thousands) Unrecognized Compensation Cost Weighted-Average Period Remaining (Years) Stock options $ 62 0.2 Restricted stock awards and units 4,072 1.7 $ 4,134 1.7 The following table presents information related to the Corporation's compensation expense related to stock incentive plans recognized for the periods indicated: For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Stock-based compensation expense: Stock options $ 338 $ 716 $ 1,020 Restricted stock awards and units 1,142 1,632 1,537 Employee stock purchase plan 88 74 68 Total $ 1,568 $ 2,422 $ 2,625 Tax benefit on nonqualified stock option expense, restricted stock awards and disqualifying dispositions of incentive stock options $ 278 $ 518 $ 620

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive (Loss) Income The following table shows the components of accumulated other comprehensive (loss) income, net of taxes, for the periods presented: (Dollars in thousands) Net Unrealized Net Change Net Change Accumulated Balance, December 31, 2017 $ (4,061) $ 9 $ (13,719) $ (17,771) Adjustment to initially apply ASU No. 2016-01 for equity securities measured at fair value (433) — — (433) Adjustment to initially apply ASU No. 2018-02 for reclassification of stranded net tax charges (968) 2 (2,955) (3,921) Other comprehensive (loss) income (5,759) 70 (602) (6,291) Balance, December 31, 2018 (11,221) 81 (17,276) (28,416) Adjustment to initially apply ASU No. 2017-12 for derivatives — 83 — 83 Other comprehensive income (loss) 7,990 (349) (1,038) 6,603 Balance, December 31, 2019 (3,231) (185) (18,314) (21,730) Adjustment to initially apply ASU No. 2016-13 for CECL (1) 237 — — 237 Other comprehensive income (loss) 1,615 (236) (2,030) (651) Balance, December 31, 2020 $ (1,379) $ (421) $ (20,344) $ (22,144) (1) See Note 1, "Summary of Significant Accounting Policies - Accounting Pronouncements Adopted in 2020" for additional information.

Leases

Leases	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Lessee Disclosure	Leases The following table provides information with respect to the Corporation's operating leases: For the Years Ended December 31, (Dollars in thousands) 2020 2019 Operating lease cost $ 3,862 $ 3,789 Short-term lease cost 12 — Variable lease cost 5 2 Total lease cost $ 3,879 $ 3,791 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from leases 3,693 3,536 At December 31, 2020 At December 31, 2019 Weighted-average remaining lease term in years 13.9 14.8 Weighted-average discount rate 4.14 % 4.24 % At December 31, 2020, maturities of lease liabilities are as follows: (Dollars in thousands) Year Amount 2021 $ 3,866 2022 3,871 2023 3,821 2024 3,691 2025 3,597 Thereafter 31,843 Total lease payments 50,689 Less: imputed interest (12,999) Present value of lease liabilities $ 37,690

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Lending Operations Commitments to extend credit, performance letters of credit, standby letters of credit, and other letters of credit are financial instruments issued by the Corporation to accommodate the financial needs of customers. The Corporation uses the same credit policies in issuing these financial instruments as it does for on-balance sheet financial instruments, including obtaining collateral when management's credit assessment of the customer deems it necessary. These financial instruments generally have fixed expiration dates and historically most of these financial instruments expire without being drawn upon. The Corporation maintains a reserve for off-balance sheet credit exposures that are currently unfunded. Commitments to extend credit are agreements to lend to a customer if there is no violation of any condition established in the contract. The Corporation's exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit is represented by the contractual amount of those instruments. Performance letters of credit and standby letters of credit commit the Bank to make payments on behalf of customers when certain specified future events occur. The Corporation's exposure to credit loss is essentially the same as the risk involved in extending loans to customers. At December 31, 2020, the maximum potential amount of future payments under letters of credit is $70.6 million. The current carrying amount of the contingent obligation is $498 thousand. The following schedule summarizes the Corporation's off-balance sheet financial instruments at December 31, 2020: (Dollars in thousands) Contract/Notional Amount Financial instruments representing credit risk: Commitments to extend credit $ 1,443,141 Performance letters of credit 34,215 Financial standby letters of credit 35,998 Other letters of credit 337 The Bank maintains a reserve in other liabilities for estimated losses associated with sold mortgages that may be repurchased. At December 31, 2020, the reserve for sold mortgages was $309 thousand. Legal Proceedings The Corporation is periodically subject to various pending and threatened legal actions, which involve claims for monetary relief. Based upon information presently available to the Corporation, it is the Corporation's opinion that any legal and financial responsibility arising from such claims will not have a material adverse effect on the Corporation's results of operations, financial position or cash flows. Service Contracts At December 31, 2020, the Corporation had contracts with third-party providers to manage the Corporation's network operations, data processing and other related services. The projected amount of the Corporation's future minimum payments due for contracts with original or remaining terms greater than one year is as follows: (Dollars in thousands) Year Amount 2021 $ 7,831 2022 4,327 2023 519 2024 252 2025 45 Thereafter 5 Total $ 12,979

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities Interest Rate Swaps The Corporation periodically uses interest rate swap agreements to modify interest rate characteristics from variable to fixed or fixed to variable in order to reduce the impact of interest rate changes on future net interest income. The Corporation's credit exposure on interest rate swaps includes fair value and any collateral that is held by a third party. In 2014, the Corporation entered into an amortizing interest rate swap classified as a cash flow hedge with a notional amount of $20.0 million to hedge a portion of the debt financing of a pool of 10-year fixed rate loans with balances totaling $29.1 million, at time of the hedge, that were originated in 2013. A brokered money market demand account with a balance exceeding the amortizing interest rate swap balance is being used for the cash flow hedge. Under the terms of the swap agreement, the Corporation pays a fixed rate of 2.10% and receives a floating rate of one-month LIBOR. The swap matures in November 2022. The Corporation performed an assessment of the hedge for effectiveness at the inception of the hedge and on a recurring basis to determine that the derivative has been and is expected to continue to be highly effective in offsetting changes in cash flows of the hedged item. At December 31, 2020, approximately $234 thousand in net deferred losses, net of tax, recorded in accumulated other comprehensive loss are expected to be reclassified into earnings during the next twelve months. This amount could differ from amounts actually recognized due to changes in interest rates, hedge de-designations, and the addition of other hedges subsequent to December 31, 2020. At December 31, 2020, the notional amount of the interest rate swap was $15.5 million, and the fair value was a liability of $533 thousand. The Corporation has an interest rate swap with a current notional amount of $179 thousand for a 15-year fixed rate loan that is earning interest at 7.43%. The Corporation pays a fixed rate of 7.43% and receives a floating rate based on the one-month LIBOR plus 224 basis points. The swap matures in April 2022. The interest rate swap is carried at fair value in accordance with FASB ASC 815 "Derivatives and Hedging." The loan is carried at fair value under the fair value option as permitted by FASB ASC 825 "Financial Instruments." Credit Derivatives The Corporation has agreements with third-party financial institutions whereby the third-party financial institution enters into interest rate derivative contracts with loan customers referred to them by the Corporation. By the terms of the agreements, the third-party financial institution has recourse to the Corporation for any exposure created under each swap contract in the event the customer defaults on the swap agreement and the agreement is in a paying position to the third-party financial institution. These transactions represent credit derivatives and are a customary arrangement that allows the Corporation to provide access to interest rate swap transactions for customers without issuing the swap. At December 31, 2020, the Corporation had ninety-four variable-rate to fixed-rate interest rate swap transactions between the third-party financial institution and customers with a current notional amount of $643.6 million and remaining maturities ranging from 15 months to 10 years. At December 31, 2020, the fair value of the Corporation's interest rate swap credit derivatives was a liability of $535 thousand. At December 31, 2020, the fair value of the swaps to the customers was a net liability of $32.6 million and these swaps were in paying positions to the third-party financial institution. The maximum potential payments by the Corporation to the third-party financial institution under these credit derivatives are not estimable as they are contingent on future interest rates and the agreement does not provide for a limitation of the maximum potential payment amount. Mortgage Banking Derivatives Derivative loan commitments represent agreements for delayed delivery of financial instruments in which the buyer agrees to purchase and the seller agrees to deliver, at a specified future date, a specified instrument at a specified price or yield. The Corporation's derivative loan commitments are commitments to sell loans secured by 1-to 4-family residential properties whose predominant risk characteristic is interest rate risk. Derivatives Tables The following table presents the notional amounts and fair values of derivatives designated as hedging instruments recorded on the consolidated balance sheets at December 31, 2020 and 2019. The Corporation pledges cash or securities to cover the negative fair value of derivative instruments. Cash collateral associated with derivative instruments are not added to or netted against the fair value amounts. Derivative Assets Derivative Liabilities (Dollars in thousands) Notional Balance Sheet Fair Balance Sheet Fair At December 31, 2020 Interest rate swap - cash flow hedge $ 15,465 $ — Other liabilities $ 533 Total $ 15,465 $ — $ 533 At December 31, 2019 Interest rate swap - cash flow hedge $ 16,286 $ — Other liabilities $ 235 Total $ 16,286 $ — $ 235 The following table presents the notional amounts and fair values of derivatives not designated as hedging instruments recorded on the consolidated balance sheets at December 31, 2020 and 2019: Derivative Assets Derivative Liabilities (Dollars in thousands) Notional Balance Sheet Fair Balance Sheet Fair At December 31, 2020 Interest rate swap $ 179 $ — Other liabilities $ 8 Credit derivatives 643,556 — Other liabilities 535 Interest rate locks with customers 77,246 Other assets 2,894 — Forward loan sale commitments 112,690 — Other liabilities 752 Total $ 833,671 $ 2,894 $ 1,295 At December 31, 2019 Interest rate swap $ 303 $ — Other liabilities $ 14 Credit derivatives 270,147 — Other liabilities 176 Interest rate locks with customers 19,966 Other assets 399 — Forward loan sale commitments 21,846 — Other liabilities 19 Total $ 312,262 $ 399 $ 209 The following table presents amounts included in the consolidated statements of income for derivatives designated as hedging instruments for the periods indicated: Statement of Income Classification For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Interest rate swap—cash flow hedge—net interest payments Interest expense $ 254 $ (22) $ 15 Interest rate swap—fair value hedge—effectiveness Interest income — (5) — Interest rate swap—cash flow hedge—ineffectiveness Other noninterest income — — 83 Interest rate swap—fair value hedge—ineffectiveness Other noninterest income — — 3 Total net (loss) gain $ (254) $ 17 $ 71 The following table presents amounts included in the consolidated statements of income for derivatives not designated as hedging instruments for the periods indicated: Statement of Income Classification For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Credit derivatives Other noninterest income $ 5,733 $ 1,350 $ 262 Interest rate locks with customers Net gain (loss) on mortgage banking activities 2,495 (91) (37) Forward loan sale commitments Net (loss) gain on mortgage banking activities (733) 131 (211) Total net gain $ 7,495 $ 1,390 $ 14 The following table presents amounts included in accumulated other comprehensive (loss) income for derivatives designated as hedging instruments at December 31, 2020 and 2019: Accumulated Other At December 31, (Dollars in thousands) 2020 2019 Interest rate swap—cash flow hedge Fair value, net of taxes $ (421) $ (185) Total $ (421) $ (185)

Fair Value Disclosures

Fair Value Disclosures	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Disclosures	Fair Value Disclosures Fair value is the price that would be received to sell an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. The Corporation determines the fair value of financial instruments based on the fair value hierarchy. The Corporation maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the Corporation. Unobservable inputs are inputs that reflect the Corporation's assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances, including assumptions about risk. Three levels of inputs are used to measure fair value. A financial instrument's level within the fair value hierarchy is based on the lowest level of input significant to the fair value measurement. Transfers between levels were recognized at the end of the reporting period for the year ended December 31, 2020. Level 1: Valuations are based on quoted prices in active markets for identical assets or liabilities that the Corporation can access at the measurement date. Since valuations are based on quoted prices that are readily and regularly available in an active market, valuation of these products does not entail a significant degree of judgment. Level 2: Valuations are based on quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly. Level 3: Valuations are based on inputs that are unobservable and significant to the overall fair value measurement. Assets and liabilities utilizing Level 3 inputs include: financial instruments whose value is determined using pricing models, discounted cash-flow methodologies, or similar techniques, as well as instruments for which the fair value calculation requires significant management judgment or estimation. Following is a description of the valuation methodologies used for instruments measured at fair value on a recurring basis, as well as the general classification of such instruments pursuant to the valuation hierarchy. Investment Securities Where quoted prices are available in an active market for identical instruments, investment securities are classified within Level 1 of the valuation hierarchy. Level 1 investment securities include U.S. Treasury securities, most equity securities and money market mutual funds. Mutual funds are registered investment companies which are valued at net asset value of shares on a market exchange at the end of each trading day. Level 2 of the valuation hierarchy includes securities issued by U.S. Government sponsored enterprises, mortgage-backed securities, collateralized mortgage obligations, corporate and municipal bonds and certain equity securities. If quoted market prices are not available, then fair values are estimated by using pricing models, quoted prices of securities with similar characteristics or discounted cash flows. In cases where there is limited activity or less transparency around inputs to the valuation, investment securities are classified within Level 3 of the valuation hierarchy. Fair values for securities are determined using independent pricing services and market-participating brokers. The Corporation's independent pricing service utilizes evaluated pricing models that vary by asset class and incorporate available trade, bid and other market information for structured securities, cash flow and, when available, loan performance data. Because many fixed income securities do not trade on a daily basis, the pricing service's evaluated pricing applications apply information as applicable through processes, such as benchmarking of like securities, sector groupings, and matrix pricing, to prepare evaluations. If at any time, the pricing service determines that it does have not sufficient verifiable information to value a particular security, the Corporation will utilize valuations from another pricing service. Management has a sufficient understanding of the third-party service's valuation models, assumptions and inputs used in determining the fair value of securities to enable management to maintain an appropriate system of internal control. On a quarterly basis, the Corporation reviews changes, as submitted by the pricing service, in the market value of its security portfolio. Individual changes in valuations are reviewed for consistency with general interest rate movements and any known credit concerns for specific securities. If, upon the Corporation's review or in comparing with another service, a material difference between pricing evaluations were to exist, the Corporation may submit an inquiry to the current pricing service regarding the data used to determine the valuation of a particular security. If the Corporation determines there is market information that would support a different valuation than from the current pricing service's evaluation, the Corporation may utilize and change the security's valuation. There were no material differences in valuations noted at December 31, 2020. Loans Held for Sale The fair value of our loans held for sale is based on estimates using Level 2 inputs. These inputs are based on pricing information obtained from wholesale mortgage banks and brokers and applied to loans with similar interest rates and maturities. Derivative Financial Instruments The fair values of derivative financial instruments are based upon the estimated amount the Corporation would receive or pay to terminate the contracts or agreements, taking into account current interest rates and, when appropriate, the current creditworthiness of the counterparties. Interest rate swaps and mortgage banking derivative financial instruments are classified within Level 2 of the valuation hierarchy. Credit derivatives are valued based on credit worthiness of the underlying borrower which is a significant unobservable input and therefore classified in Level 3 of the valuation hierarchy. One commercial loan associated with an interest rate swap is classified in Level 3 of the valuation hierarchy at December 31, 2020 since lending credit risk is not an observable input for this loan. The unrealized gain on the one loan was $8 thousand at December 31, 2020. Contingent Consideration Liability The Corporation estimates the fair value of the contingent consideration liability by using a discounted cash flow model of future contingent payments based on projected revenue related to the acquired business. The estimated fair value of the contingent consideration liability is reviewed on a quarterly basis and any valuation adjustments resulting from a change of estimated future contingent payments based on projected revenue of the acquired business affecting the contingent consideration liability will be recorded through noninterest expense. Due to the significant unobservable input related to the projected revenue, the contingent consideration liability is classified within Level 3 of the valuation hierarchy. An increase in the projected revenue may result in a higher fair value of the contingent consideration liability. Alternatively, a decrease in the projected revenue may result in a lower estimated fair value of the contingent consideration liability. The following table presents the assets and liabilities measured at fair value on a recurring basis at December 31, 2020 and 2019, classified using the fair value hierarchy: At December 31, 2020 (Dollars in thousands) Level 1 Level 2 Level 3 Assets/ Assets: Available-for-sale securities: State and political subdivisions $ — $ 13,537 $ — $ 13,537 Residential mortgage-backed securities — 114,163 — 114,163 Collateralized mortgage obligations — 5,321 — 5,321 Corporate bonds — 76,019 9,600 85,619 Total available-for-sale securities — 209,040 9,600 218,640 Equity securities: Equity securities - financial services industry 818 — — 818 Money market mutual funds 2,461 — — 2,461 Total equity securities 3,279 — — 3,279 Loans* — — 187 187 Loans held for sale — 37,039 — 37,039 Interest rate locks with customers* — 2,894 — 2,894 Total assets $ 3,279 $ 248,973 $ 9,787 $ 262,039 Liabilities: Contingent consideration liability $ — $ — $ 55 $ 55 Interest rate swaps* — 541 — 541 Credit derivatives* — — 535 535 Forward loan sale commitments* — 752 — 752 Total liabilities $ — $ 1,293 $ 590 $ 1,883 *Such financial instruments are recorded at fair value as further described in Note 17, "Derivative Instruments and Hedging Activities." The $9.6 million of Corporate bonds is comprised of one investment grade bond and the Corporation utilizes a third party to estimate the value. The value is derived from a discounted cash flow analysis which utilizes a probability of default input . The $535 thousand of credit derivatives liability represents the Credit Valuation Adjustment (CVA), which is obtained from real-time financial market data, of ninety-four interest rate swaps with a current notional amount of $643.6 million. The December 31, 2020 CVA assumes a zero-deal recovery percentage based on the most recent index credit curve. At December 31, 2020, the Corporation recorded a $400 thousand unrealized loss within other comprehensive income for recurring Level 3 fair value measurements held at December 31, 2020. At December 31, 2019 (Dollars in thousands) Level 1 Level 2 Level 3 Assets/ Assets: Available-for-sale securities: U.S. government corporations and agencies $ — $ 300 $ — $ 300 State and political subdivisions — 34,595 — 34,595 Residential mortgage-backed securities — 118,460 — 118,460 Collateralized mortgage obligations — 2,361 — 2,361 Corporate bonds — 91,208 — 91,208 Total available-for-sale securities — 246,924 — 246,924 Equity securities: Equity securities - financial services industry 1,004 — — 1,004 Money market mutual funds 1,619 — — 1,619 Total equity securities 2,623 — — 2,623 Loans* — — 317 317 Interest rate locks with customers* — 399 — 399 Total assets $ 2,623 $ 247,323 $ 317 $ 250,263 Liabilities: Contingent consideration liability $ — $ — $ 160 $ 160 Interest rate swaps* — 249 — 249 Credit derivatives* — — 176 176 Forward loan sale commitments* — 19 — 19 Total liabilities $ — $ 268 $ 336 $ 604 *Such financial instruments are recorded at fair value as further described in Note 17, "Derivative Instruments and Hedging Activities." The following table includes a rollforward of corporate bonds, loans and credit derivatives for which the Corporation utilized Level 3 inputs to determine fair value on a recurring basis for the years ended December 31, 2020 and 2019. For the Year Ended December 31, 2020 (Dollars in thousands) Balance at Additions Payments received (Decrease) Increase in value Transfer from Level 3 Transfer into Level 3 Balance at December 31, 2020 Corporate bonds $ — $ — $ — $ (400) $ — $ 10,000 $ 9,600 Loans 317 — (123) (7) — — 187 Credit derivatives (176) (6,092) — 5,733 — — (535) Net total $ 141 $ (6,092) $ (123) $ 5,326 $ — $ 10,000 $ 9,252 For the Year Ended December 31, 2019 (Dollars in thousands) Balance at Additions Payments received Increase (decrease) in value Transfer from Level 3 Transfer into Level 3 Balance at December 31, 2019 Corporate bonds $ 25,729 $ — $ — $ 675 $ (26,404) — $ — Loans 1,779 — (1,461) (1) — — 317 Credit derivatives (72) (1,454) — 1,350 — — (176) Net total $ 27,436 $ (1,454) $ (1,461) $ 2,024 $ (26,404) $ — $ 141 The following table presents the change in the balance of the contingent consideration liability related to acquisitions for which the Corporation utilized Level 3 inputs to determine fair value on a recurring basis for the years ended December 31, 2020 and 2019: For the Year Ended December 31, 2020 (Dollars in thousands) Balance at Contingent Payment of Adjustment Balance at December 31, 2020 Girard Partners $ 160 $ — $ 121 $ 16 $ 55 Total contingent consideration liability $ 160 $ — $ 121 $ 16 $ 55 For the Year Ended December 31, 2019 (Dollars in thousands) Balance at Contingent Payment of Adjustment Balance at December 31, 2019 Girard Partners $ 259 $ — $ 129 $ 30 $ 160 Total contingent consideration liability $ 259 $ — $ 129 $ 30 $ 160 The Corporation may be required to periodically measure certain assets and liabilities at fair value on a non-recurring basis in accordance with GAAP. These adjustments to fair value usually result from the application of lower of cost or market accounting or changes in the value of loans held for investment analyzed on an individual basis. The following table represents assets measured at fair value on a non-recurring basis at December 31, 2020 and 2019: At December 31, 2020 (Dollars in thousands) Level 1 Level 2 Level 3 Assets at Individually analyzed loans held for investment $ — $ — $ 30,900 $ 30,900 Other real estate owned — — 7,355 7,355 Total $ — $ — $ 38,255 $ 38,255 At December 31, 2019 (Dollars in thousands) Level 1 Level 2 Level 3 Assets at Impaired loans held for investment $ — $ — $ 36,018 $ 36,018 Impaired leases held for investment — — 277 277 Other real estate owned — — 516 516 Total $ — $ — $ 36,811 $ 36,811 The following table presents assets and liabilities not measured at fair value on a recurring or non-recurring basis in the Corporation's consolidated balance sheet but for which the fair value is required to be disclosed at December 31, 2020 and 2019. The disclosed fair values are classified using the fair value hierarchy. At December 31, 2020 (Dollars in thousands) Level 1 Level 2 Level 3 Fair Carrying Assets: Cash and short-term interest-earning assets $ 219,858 $ — $ — $ 219,858 $ 219,858 Held-to-maturity securities — 156,325 — 156,325 151,257 Federal Home Loan Bank, Federal Reserve Bank and other stock N/A N/A N/A N/A 28,183 Net loans and leases held for investment — — 5,338,782 5,338,782 5,192,710 Servicing rights — — 6,783 6,783 6,408 Total assets $ 219,858 $ 156,325 $ 5,345,565 $ 5,721,748 $ 5,598,416 Liabilities: Deposits: Demand and savings deposits, non-maturity $ 4,678,940 $ — $ — $ 4,678,940 $ 4,678,940 Time deposits — 574,018 — 574,018 563,775 Total deposits 4,678,940 574,018 — 5,252,958 5,242,715 Short-term borrowings — 17,906 — 17,906 17,906 Long-term debt — 112,968 — 112,968 110,000 Subordinated notes — 190,045 — 190,045 183,515 Total liabilities $ 4,678,940 $ 894,937 $ — $ 5,573,877 $ 5,554,136 At December 31, 2019 (Dollars in thousands) Level 1 Level 2 Level 3 Fair Carrying Assets: Cash and short-term interest-earning assets $ 125,128 $ — $ — $ 125,128 $ 125,128 Held-to-maturity securities — 194,886 — 194,886 192,052 Federal Home Loan Bank, Federal Reserve Bank and other stock N/A N/A N/A N/A 28,254 Loans held for sale — 5,560 — 5,560 5,504 Net loans and leases held for investment — — 4,309,208 4,309,208 4,314,893 Servicing rights — — 9,340 9,340 6,626 Total assets $ 125,128 $ 200,446 $ 4,318,548 $ 4,644,122 $ 4,672,457 Liabilities: Deposits: Demand and savings deposits, non-maturity $ 3,754,065 $ — $ — $ 3,754,065 $ 3,754,065 Time deposits — 609,387 — 609,387 606,010 Total deposits 3,754,065 609,387 — 4,363,452 4,360,075 Short-term borrowings — 18,680 — 18,680 18,680 Long-term debt — 151,343 — 151,343 150,098 Subordinated notes — 96,663 — 96,663 94,818 Total liabilities $ 3,754,065 $ 876,073 $ — $ 4,630,138 $ 4,623,671 The following valuation methods and assumptions were used by the Corporation in estimating the fair value for financial instruments measured at fair value on a non-recurring basis and financial instruments not measured at fair value on a recurring or non-recurring basis in the Corporation's consolidated balance sheets but for which the fair value is required to be disclosed: Cash and short-term interest-earning assets: The carrying amounts reported in the balance sheet for cash and due from banks, interest-earning deposits with other banks and other short-term investments is their stated value. Cash and short-term interest-earning assets are classified within Level 1 in the fair value hierarchy. Held-to-maturity securities: Fair values for the held-to-maturity investment securities are estimated by using pricing models or quoted prices of securities with similar characteristics and are classified in Level 2 in the fair value hierarchy. Federal Home Loan Bank, Federal Reserve Bank and other stock: It is not practical to determine the fair values of Federal Home Loan Bank, Federal Reserve Bank and other stock, due to restrictions placed on their transferability. Loans held for sale: Loans held for sale are carried at the lower of cost or estimated fair value. The fair value of the Corporation's mortgage loans held for sale are generally determined using a pricing model based on current market information obtained from external sources, including interest rates, bids or indications provided by market participants on specific loans that are actively marketed for sale. These loans are primarily residential mortgage loans and are generally classified in Level 2 due to the observable pricing data. Loans and leases held for investment: The fair values for loans and leases held for investment are estimated using discounted cash flow analyses, using a discount rate based on current interest rates at which similar loans with similar terms would be made to borrowers, adjusted as appropriate to consider credit, liquidity and marketability factors to arrive at a fair value that represents the Corporation's exit price at which these instruments would be sold or transferred. Loans and leases are classified within Level 3 in the fair value hierarchy since credit risk is not an observable input. Individually analyzed loans and leases held for investment: For individually analyzed loans and leases, the Corporation uses a variety of techniques to measure fair value, such as using the current appraised value of the collateral, agreements of sale, discounting the contractual cash flows, and analyzing market data that the Corporation may adjust due to specific characteristics of the loan/lease or collateral. At December 31, 2020, individually analyzed loans held for investment had a carrying amount of $31.5 million with a valuation allowance of $585 thousand. At December 31, 2019, impaired loans held for investment had a carrying amount of $38.1 million with a valuation allowance of $2.1 million. The Corporation had no individually analyzed leases at December 31, 2020. The Corporation had impaired leases of $277 thousand with no reserve at December 31, 2019. Servicing rights: The Corporation estimates the fair value of servicing rights using discounted cash flow models that calculate the present value of estimated future net servicing income. The model uses readily available prepayment speed assumptions for the interest rates of the portfolios serviced. Servicing rights are classified within Level 3 in the fair value hierarchy based upon management's assessment of the inputs. The Corporation reviews the servicing rights portfolio on a quarterly basis for impairment and the servicing rights are carried at the lower of amortized cost or estimated fair value. At December 31, 2020, servicing rights had a net carrying amount of $6.5 million which included a valuation allowance of $87 thousand. At December 31, 2019, servicing rights had a carrying amount of $6.6 million with no valuation allowance. Goodwill and other identifiable assets: Certain non-financial assets subject to measurement at fair value on a non-recurring basis include goodwill and other identifiable intangible assets. In accordance with ASC Topic 350, goodwill is tested at least annually for impairment at a the reporting unit level. The Corporation performed its annual test of goodwill for impairment during the fourth quarter of 2020 and concluded there was no impairment of goodwill. There was no impairment of goodwill recorded during 2018 through 2019. The Corporation also completed an impairment test for other intangible assets during the fourth quarter of 2020 and concluded there was no impairment of other intangible assets. There was no impairment of other identifiable intangible assets recorded during 2018 through 2019. Other real estate owned: Other real estate owned (OREO) represents properties that the Corporation has acquired through foreclosure by either accepting a deed in lieu of foreclosure, or by taking possession of assets that were used as loan collateral. The Corporation reports OREO at the lower of cost or fair value less cost to sell, adjusted periodically based on current appraisals. Capital improvement expenses associated with the construction or repair of the property are capitalized as part of the cost of the OREO asset. Write-downs and any gain or loss upon the sale of OREO is recorded in other noninterest income. OREO is reported in other assets on the consolidated balance sheet. During 2020, two property were transferred into OREO with a fair value of $8.4 million, one property had a write-down totaling $300 thousand, and two properties were sold with total proceeds of $325 thousand for a net gain of $106 thousand. Additionally, the Bank received $1.1 million in earnest deposits on the pending sale of land. At December 31, 2020 and 2019, OREO had a carrying amount of $7.4 million and $516 thousand, respectively. Other real estate owned is classified within Level 3 of the valuation hierarchy due to the unique characteristics of the collateral for each loan. Deposit liabilities: The fair values for demand and savings accounts, with no stated maturities, is the amount payable on demand at the reporting date (carrying value) and are classified within Level 1 in the fair value hierarchy. The fair values for time deposits with fixed maturities are estimated by discounting the final maturity using interest rates currently offered for deposits with similar remaining maturities. Time deposits are classified within Level 2 in the fair value hierarchy. Short-term borrowings: The fair value of short-term borrowings are estimated using current market rates for similar borrowings and are classified within Level 2 in the fair value hierarchy. Long-term debt: The fair value of long-term debt is estimated by using discounted cash flow analysis, based on current market rates for debt with similar terms and remaining maturities. Long-term debt is classified within Level 2 in the fair value hierarchy. Subordinated notes: The fair value of subordinated notes are estimated by discounting the principal balance using the treasury yield curve for the term to the call date as the Corporation has the option to call the subordinated notes. The subordinated notes are classified within Level 2 in the fair value hierarchy.

Restructuring and Related Activ

Restructuring and Related Activities	12 Months Ended
	Dec. 31, 2020
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities Disclosure	Restructuring ChargesIn October 2020, the Corporation announced a plan to optimize its financial service center footprint with the consolidation or relocation of eight locations. The plan is being executed in two phases, the first phase was completed on January 29, 2021 and the second is planned to be completed on June 30, 2021. The Corporation recorded $1.4 million in restructuring charges during the fourth quarter of 2020 in conjunction with this plan. These charges are included in the Banking business segment and are separately classified as a component of non-interest expense within the consolidated statement of income.

Share Repurchase Plan

Share Repurchase Plan	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Share Repurchase Plan	Share Repurchase PlanThe Corporation will repurchase shares of its common stock from time to time through open market purchases, tender offers, privately negotiated purchases or other means based on general market conditions, the trading price of the Corporation's common stock, tax considerations, alternative uses of capital and the Corporation's results of operation. The share repurchase program does not obligate the Corporation to acquire any particular amount of common stock. The program has no scheduled expiration date and the Board of Directors has the right to suspend or discontinue the program at any time. During the years ended December 31, 2020 and 2018, the Corporation repurchased 185,072 shares and 150,000 shares, respectively, of common stock at a cost of $4.0 million and $3.6 million, respectively, under the Corporation's share repurchase program. During the year ended December 31, 2019, there were no repurchases of common stock under the Corporation's share repurchase program. At December 31, 2020, there were 679,174 shares available to be repurchased under the program.

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2020
Banking and Thrift, Other Disclosures [Abstract]
Regulatory Matters	Regulatory Matters The Corporation and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Corporation's and the Bank's financial statements. Capital adequacy guidelines, and additionally for the Bank, the prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance-sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators about components, risk weighting and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Corporation and the Bank to maintain minimum capital amounts and ratios as set forth in the following table. To comply with the regulatory definition of well capitalized, a depository institution must maintain minimum capital amounts and ratios as set forth in the following table. Under current rules, in order to avoid limitations on capital distributions (including dividend payments and certain discretionary bonus payments to executive officers), a banking organization must hold a capital conservation buffer comprised of common equity Tier 1 capital above its minimum risk-based capital requirements in an amount greater than 2.50% of total risk-weighted assets. The Corporation's and Bank's intent is to maintain capital levels in excess of the capital conservation buffer, which requires Tier 1 Capital to Risk Weighted Assets to exceed 8.50% and Total Capital to Risk Weighted Assets to exceed 10.50%. The Corporation and the Bank were in compliance with these requirements for 2020. The Corporation's and Bank's actual and required capital ratios as of December 31, 2020 and December 31, 2019 under regulatory capital rules were as follows. Actual For Capital Adequacy To Be Well-Capitalized (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio At December 31, 2020 Total Capital (to Risk-Weighted Assets): Corporation $ 801,368 15.31 % $ 418,811 8.00 % $ 523,513 10.00 % Bank 632,183 12.12 417,416 8.00 521,769 10.00 Tier 1 Capital (to Risk-Weighted Assets): Corporation 563,491 10.76 314,108 6.00 418,811 8.00 Bank 569,821 10.92 313,062 6.00 417,416 8.00 Tier 1 Common Capital (to Risk-Weighted Assets): Corporation 563,491 10.76 235,581 4.50 340,284 6.50 Bank 569,821 10.92 234,796 4.50 339,150 6.50 Tier 1 Capital (to Average Assets): Corporation 563,491 9.08 248,224 4.00 310,280 5.00 Bank 569,821 9.21 247,494 4.00 309,368 5.00 At December 31, 2019 Total Capital (to Risk-Weighted Assets): Corporation $ 655,010 13.78 % $ 380,276 8.00 % $ 475,344 10.00 % Bank 552,142 11.66 378,724 8.00 473,405 10.00 Tier 1 Capital (to Risk-Weighted Assets): Corporation 524,137 11.03 285,207 6.00 380,276 8.00 Bank 516,087 10.90 284,043 6.00 378,724 8.00 Tier 1 Common Capital (to Risk-Weighted Assets): Corporation 524,137 11.03 213,905 4.50 308,974 6.50 Bank 516,087 10.90 213,032 4.50 307,713 6.50 Tier 1 Capital (to Average Assets): Corporation 524,137 10.02 209,330 4.00 261,663 5.00 Bank 516,087 9.90 208,589 4.00 260,737 5.00 At December 31, 2020 and December 31, 2019, management believes that the Corporation and the Bank continued to meet all capital adequacy requirements to which they are subject. At December 31, 2020, the Bank is categorized as "well capitalized" under the regulatory framework for prompt corrective action. There are no conditions or events that management believes have changed the Bank's category. In December 2018, the Federal Reserve announced that a banking organization that experiences a reduction in retained earnings due to the CECL adoption as of the beginning of the fiscal year in which CECL is adopted may elect to phase in the regulatory capital impact of adopting CECL. Transitional amounts are calculated for the following items: retained earnings, temporary difference deferred tax assets and credit loss allowances eligible for inclusion in regulatory capital. When calculating regulatory capital ratios, 25% of the transitional amounts are phased in during the first year. An additional 25% of the transitional amounts are phased in over each of the next two years and at the beginning of the fourth year, the day-one effects of CECL are completely reflected in regulatory capital. Additionally, in March 2020, the Office of the Comptroller of the Currency, Treasury, the Board of Governors of the Federal Reserve System, and the Federal Deposit Insurance Corporation announced the 2020 CECL interim final rule (IFR) designed to allow eligible firms to better focus on supporting lending to creditworthy households and businesses in light of recent strains on the U.S. economy as a result of the coronavirus (COVID-19). The 2020 CECL IFR allows Corporations that adopt CECL before December 31, 2020 to defer 100 percent of the day one transitional amounts described above through December 31, 2021 for regulatory capital purposes. Additionally, the 2020 CECL IFR allows electing firms to defer through December 31, 2021 the approximate portion of the post day-one allowance attributable to CECL relative to the incurred loss methodology. This is calculated by applying a 25% scaling factor to the CECL provision. The Corporation adopted the transition guidance and the 2020 CECL IFR relief and applied these effects to regulatory capital. See Note 1, "Summary of Significant Accounting Policies" for additional information on the adoption of CECL. Dividends and Other Restrictions The primary source of the Corporation's dividends paid to its shareholders is from the earnings of the Bank paid to the Corporation in the form of dividends. The approval of the Federal Reserve Board of Governors is required for a state bank member in the Federal Reserve system to pay dividends if the total of all dividends declared in any calendar year exceeds the Bank's net profits (as defined) for that year combined with its retained net profits for the preceding two calendar years. Under this formula, the Bank can declare dividends in 2021 without approval of the Federal Reserve Board of Governors of approximately $92.1 million plus an additional amount equal to the Bank's net profits for 2021 up to the date of any such dividend declaration. Federal Reserve Board policy applicable to the holding company also provides that, as a general matter, a bank holding company should inform the Federal Reserve and should eliminate, defer or significantly reduce the holding company's dividends if the holding company's net income for the preceding four quarters, net of dividends paid during the period, is not sufficient to fully fund the dividends, the holding company's prospective rate of earnings retention is inconsistent with its capital needs and overall current and prospective financial condition, or the holding company will not meet, or is in danger of not meeting, its minimum regulatory capital adequacy ratios. Federal Reserve Board policy also provides that a bank holding company should inform the Federal Reserve reasonably in advance of declaring or paying a dividend that exceeds earnings for the period or that could result in a material adverse change to the organization's capital structure. The Federal Reserve Act requires that the extension of credit by the Bank to certain affiliates, including the Corporation (parent), be secured by readily marketable securities, that the extension of credit to any one affiliate be limited to 10% of the Bank's capital and surplus (as defined), and that extensions of credit to all such affiliates be limited to 20% of the Bank's capital and surplus.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions In the ordinary course of business, the Corporation has made loans and commitments to extend credit to certain directors and executive officers of the Corporation and companies in which directors have an interest (Related Parties). These loans and commitments have been made on substantially the same terms, including interest rates and collateral requirements, as those prevailing at the same time for comparable transactions with customers not related to the lender and did not involve more than the normal risk of collectability or present other unfavorable terms. The following table provides a summary of activity for loans to Related Parties during the year ended December 31, 2020: (Dollars in thousands) Balance at January 1, 2020 $ 3,123 Additions 25 Amounts collected and other reductions (1,633) Balance at December 31, 2020 $ 1,515 The following table provides additional information regarding transactions with Related Parties: (Dollars in thousands) At December 31, 2020 Commitments to extend credit $ 4,114 Deposits received 25,118

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting At December 31, 2020, the Corporation has three reportable business segments: Banking, Wealth Management and Insurance. The Corporation determines the segments based primarily upon product and service offerings, through the types of income generated and the regulatory environment. This is strategically how the Corporation operates and has positioned itself in the marketplace. Accordingly, significant operating decisions are based upon analysis of each of these segments. The parent holding company and intercompany eliminations are included in the "Other" segment. Each segment generates revenue from a variety of products and services it provides. Examples of products and services provided for each reportable segment are indicated as follows: ● The Banking segment provides financial services to individuals, businesses, municipalities and nonprofit organizations. These services include a full range of banking services such as deposit taking, loan origination and servicing, mortgage banking, other general banking services and equipment lease financing. ● The Wealth Management segment offers investment advisory, financial planning, trust and brokerage services. The Wealth Management segment serves a diverse client base of private families and individuals, municipal pension plans, retirement plans, trusts and guardianships. ● The Insurance segment includes a full-service insurance brokerage agency offering commercial property and casualty insurance, employee benefit solutions, personal insurance lines and human resources consulting. The following tables provide reportable segment-specific information and reconciliations to consolidated financial information for the years ended December 31, 2020, 2019 and 2018. (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated For the Year Ended December 31, 2020 Interest income $ 203,904 $ 8 $ — $ 33 $ 203,945 Interest expense 22,822 — — 6,762 29,584 Net interest income (expense) 181,082 8 — (6,729) 174,361 Provision for credit losses 40,794 — — — 40,794 Noninterest income 37,910 23,814 16,682 (78) 78,328 Noninterest expense 126,131 15,720 12,142 1,005 154,998 Intersegment (revenue) expense* (1,103) 627 476 — — Income (expense) before income taxes 53,170 7,475 4,064 (7,812) 56,897 Income tax expense (benefit) 9,153 1,525 858 (1,555) 9,981 Net income (loss) $ 44,017 $ 5,950 $ 3,206 $ (6,257) $ 46,916 Total assets $ 6,234,336 $ 48,646 $ 35,906 $ 17,608 $ 6,336,496 Net capital expenditures $ 3,646 $ 24 $ 46 $ 33 $ 3,749 For the Year Ended December 31, 2019 Interest income $ 214,020 $ 41 $ — $ 32 $ 214,093 Interest expense 39,818 — — 5,043 44,861 Net interest income (expense) 174,202 41 — (5,011) 169,232 Provision for credit losses 8,511 — — — 8,511 Noninterest income 23,748 23,946 17,318 410 65,422 Noninterest expense 116,283 15,799 12,477 1,531 146,090 Intersegment (revenue) expense* (1,204) 688 516 — — Income (expense) before income taxes 74,360 7,500 4,325 (6,132) 80,053 Income tax expense (benefit) 13,859 1,392 443 (1,360) 14,334 Net income (loss) $ 60,501 $ 6,108 $ 3,882 $ (4,772) $ 65,719 Total assets $ 5,282,505 $ 44,591 $ 34,291 $ 19,537 $ 5,380,924 Net capital expenditures $ 1,886 $ 84 $ 104 $ 372 $ 2,446 For the Year Ended December 31, 2018 Interest income $ 190,425 $ 32 $ — $ 31 $ 190,488 Interest expense 27,383 — — 5,043 32,426 Net interest income (expense) 163,042 32 — (5,012) 158,062 Provision for credit losses 20,310 — — — 20,310 Noninterest income 20,815 23,179 16,442 (263) 60,173 Noninterest expense 108,657 15,398 12,893 291 137,239 Intersegment (revenue) expense* (1,113) 612 501 — — Income (expense) before income taxes 56,003 7,201 3,048 (5,566) 60,686 Income tax expense (benefit) 9,085 1,913 752 (1,607) 10,143 Net income (loss) $ 46,918 $ 5,288 $ 2,296 $ (3,959) $ 50,543 Net capital expenditures $ 3,091 $ 45 $ 30 $ 201 $ 3,367 *Includes an allocation of general and administrative expenses from both the parent holding company and the Bank. These expenses are generally allocated based upon number of employees and square footage utilized.

Revenue From Contracts with Cus

Revenue From Contracts with Customers	12 Months Ended
	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer	Revenue from Contracts with Customers The following tables disaggregate the Corporation's revenue by major source and reportable segment for the years ended December 31, 2020, 2019 and 2018. (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated For the Year Ended December 31, 2020 Net interest income (1) $ 181,082 $ 8 $ — $ (6,729) $ 174,361 Noninterest income: Trust fee income — 7,703 — — 7,703 Service charges on deposit accounts 4,845 — — — 4,845 Investment advisory commission and fee income — 15,944 — — 15,944 Insurance commission and fee income — — 16,087 — 16,087 Other service fee income (2) 6,781 167 595 — 7,543 Bank owned life insurance income (1) 2,831 — — 109 2,940 Net gain on sales of investment securities (1) 871 — — — 871 Net gain on mortgage banking activities (1) 16,442 — — — 16,442 Other income (loss) (2) 6,140 — — (187) 5,953 Total noninterest income $ 37,910 $ 23,814 $ 16,682 $ (78) $ 78,328 (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated For the Year Ended December 31, 2019 Net interest income (1) $ 174,202 $ 41 $ — $ (5,011) $ 169,232 Noninterest income: Trust fee income — 7,826 — — 7,826 Service charges on deposit accounts 5,946 — — — 5,946 Investment advisory commission and fee income — 15,940 — — 15,940 Insurance commission and fee income — — 16,571 — 16,571 Other service fee income (2) 8,414 180 747 — 9,341 Bank owned life insurance income (1) 2,849 — — 330 3,179 Net gain on sales of investment securities (1) 54 — — — 54 Net gain on mortgage banking activities (1) 3,946 — — — 3,946 Other income (2) 2,539 — — 80 2,619 Total noninterest income $ 23,748 $ 23,946 $ 17,318 $ 410 $ 65,422 (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated For the Year Ended December 31, 2018 Net interest income (1) $ 163,042 $ 32 $ — $ (5,012) $ 158,062 Noninterest income: Trust fee income — 7,882 — — 7,882 Service charges on deposit accounts 5,632 — — — 5,632 Investment advisory commission and fee income — 15,098 — — 15,098 Insurance commission and fee income — — 15,658 — 15,658 Other service fee income (2) 8,347 199 786 — 9,332 Bank owned life insurance income (1) 3,284 — — (110) 3,174 Net gain on sales of investment securities (1) 10 — — — 10 Net gain on mortgage banking activities (1) 3,125 — — — 3,125 Other income (loss) (2) 417 — (2) (153) 262 Total noninterest income $ 20,815 $ 23,179 $ 16,442 $ (263) $ 60,173 (1) Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of FASB ASC 606 "Revenue from Contracts with Customers" (FASB ASC 606). Noninterest income streams that are out of scope of FASB ASC 606 include bank owned life insurance income, sales of investment securities and mortgage banking activities. (2) Other service fee income and other income include certain items that are in scope and certain items that are out of scope of FASB ASC 606 are described further in the following paragraphs. Banking Segment Service charges on deposit accounts are generally earned on depository accounts for commercial and consumer customers and primarily includes fees for account services, overdraft and non-sufficient funds services, and cash management services for commercial customers. Account services include fees for event-driven services such as ATM transactions and fees for periodic account maintenance activities. Cash management services for commercial customers include fees for event-driven services such as lockbox processing and line sweep services and fees for periodic account maintenance activities. The Corporation's obligation for event-driven services is satisfied at the time of the event when the service is delivered, while the obligation for periodic services is satisfied over the course of each month. Obligations for overdraft services is satisfied at the time of the overdraft. Other service fee income is earned from commercial and consumer customers and primarily includes credit and debit card interchange and merchant revenues, mortgage servicing income, which are out of scope of FASB ASC 606 , and other deposit related service fee income such as wire transfers, check services and safe deposit boxes. Interchange and merchant revenues are recognized concurrently with the delivery of services on a monthly basis. Other deposit related service fee income include fees for event-driven services, such as wire transfers and check services, and fees for periodic services such as safe deposit box services. The obligation for event-driven services is satisfied at the time of the event when the service is delivered, while the obligation for periodic services is satisfied over the course of each month. Other income primarily includes net gains or losses from the sales of loans and leases, net gains or losses from the sales or disposition of fixed assets and net gains or losses on interest rate swaps, all of which are out of scope of FASB ASC 606 , and net gains or losses on sales and write-downs of other real estate owned. Net gains or losses on sales of other real estate owned are recognized at the point in time in which control of the other real estate owned is transferred. Wealth Management Segment Trust fee income is earned for providing trust, investment management and other related services. Obligations for trust and other related services are generally satisfied over time but may be satisfied at points in time for certain activities that are transactional in nature and obligations for investment management services are generally performed over time. Fees for trust fee income are typically based on a tiered scale relative to the market value of assets under management and are recognized in conjunction with the delivery of services. Investment advisory commission and fee income include fees for financial planning, guardian and custodian of employee benefits, investment advisory, and brokerage services. Obligations for financial planning, guardian and custodian of employee benefits, and investment advisory services are generally satisfied over time and fees, typically based on a tiered scale relative to the market value of assets under management, are recognized in conjunction with the delivery of services. Brokerage services are typically event driven and are based on the size and number of transactions executed at the client's direction and recognized on the trade date. Insurance Segment Insurance commission and fee income is derived primarily from commissions from the sale of insurance policies, which are generally calculated as a percentage of the policy premium, and contingent income, which is calculated based on the performance of the policies held by each carrier. Obligations for the sale of insurance policies are generally satisfied at the point in time which the policy is executed and are recognized at the point in time in which the amounts are known and collection is reasonably assured. Obligations for contingent income are generally satisfied over time and are recognized at the point in time in which the amounts are known and collection is reasonably assured. Other service fee income is earned from payroll and human resources consulting services. These obligations are generally satisfied over time and are recognized on a periodic basis.

Condensed Financial Information

Condensed Financial Information - Parent Company Only	12 Months Ended
	Dec. 31, 2020
Condensed Financial Information Disclosure [Abstract]
Condensed Financial Information - Parent Company Only	Condensed Financial Information - Parent Company Only Condensed financial statements of the Corporation, parent company only, follow: (Dollars in thousands) At December 31, Balance Sheets 2020 2019 Assets: Cash $ 154,422 $ 82,673 Interest-earning deposits with other banks 211 177 Cash and cash equivalents 154,633 82,850 Investments in securities 818 1,004 Investments in subsidiaries, at equity in net assets: Bank 719,146 685,387 Non-banks — — Other assets 16,579 18,355 Total assets $ 891,176 $ 787,596 Liabilities: Dividends payable $ — $ 5,865 Subordinated notes 183,515 94,818 Other liabilities 15,189 11,791 Total liabilities 198,704 112,474 Shareholders' equity: 692,472 675,122 Total liabilities and shareholders' equity $ 891,176 $ 787,596 (Dollars in thousands) For the Years Ended December 31, Statements of Income 2020 2019 2018 Dividends from Bank $ 9,746 $ 29,681 $ 22,359 Dividends from non-bank — — — Other income 21,803 23,943 26,631 Total operating income 31,549 53,624 48,990 Interest expense 6,762 5,043 5,043 Operating expenses 22,852 25,032 27,155 Income before income tax benefit and equity in undistributed income of subsidiaries 1,935 23,549 16,792 Income tax benefit (1,555) (1,360) (1,607) Income before equity in undistributed income of subsidiaries 3,490 24,909 18,399 Equity in undistributed income of subsidiaries: Bank 43,426 40,810 32,144 Non-banks — — — Net income $ 46,916 $ 65,719 $ 50,543 (Dollars in thousands) For the Years Ended December 31, Statements of Cash Flows 2020 2019 2018 Cash flows from operating activities: Net income $ 46,916 $ 65,719 $ 50,543 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiaries (43,426) (40,810) (32,144) Bank owned life insurance (income) expense (108) (331) 109 Depreciation of premises and equipment 320 328 386 Stock based compensation 1,480 2,348 2,557 Contributions to pension and other postretirement benefit plans (270) (266) (3,264) Decrease in other assets 2,321 554 14,205 Decrease in other liabilities (4,631) (1,319) (865) Net cash provided by operating activities 2,602 26,223 31,527 Cash flow from investing activities: Other, net (32) (371) (188) Net cash used in investing activities (32) (371) (188) Cash flows from financing activities: Proceeds from issuance of subordinated notes 98,448 — — Repayment of subordinated debt (10,000) — — Purchases of treasury stock (4,452) (2,045) (5,984) Stock issued under dividend reinvestment and employee stock purchase plans 2,369 2,233 2,295 Proceeds from exercise of stock options 384 1,203 1,131 Cash dividends paid (17,536) (23,435) (23,495) Net cash provided by (used in) financing activities 69,213 (22,044) (26,053) Net increase in cash and due from financial institutions 71,783 3,808 5,286 Cash and cash equivalents at beginning of year 82,850 79,042 73,756 Cash and cash equivalents at end of period $ 154,633 $ 82,850 $ 79,042 Supplemental disclosures of cash flow information: Cash paid during the year for: Interest $ 5,121 $ 4,800 $ 4,800 Income tax, net of refunds received 16,172 16,460 643

Quarterly Financial Data (unaud

Quarterly Financial Data (unaudited)	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data	Quarterly Financial Data (Unaudited) The unaudited results of operations for the quarters for the years ended December 31, 2020 and 2019 were as follows: (Dollars and shares in thousands, except per share data) 2020 Quarterly Financial Data: Fourth Third Second First Interest income $ 51,334 $ 50,612 $ 49,980 $ 52,019 Interest expense 6,813 6,758 6,462 9,551 Net interest income 44,521 43,854 43,518 42,468 (Reversal of provision) provision for credit losses (8,721) 3,935 23,737 21,843 Net interest income after provision for credit losses 53,242 39,919 19,781 20,625 Noninterest income 20,139 21,805 18,000 18,384 Noninterest expense 41,734 38,527 35,960 38,777 Income before income taxes 31,647 23,197 1,821 232 Income tax expense (benefit) 5,773 5,078 (264) (606) Net income $ 25,874 $ 18,119 $ 2,085 $ 838 Per share data: Weighted average shares outstanding - basic earnings per share 29,237 29,189 29,149 29,218 Weighted average shares outstanding - diluted earnings per share 29,309 29,217 29,164 29,283 Basic earnings per share $ 0.88 $ 0.62 $ 0.07 $ 0.03 Diluted earnings per share $ 0.88 $ 0.62 $ 0.07 $ 0.03 Dividends declared per share $ — $ 0.20 $ 0.20 $ 0.20 (Dollars and shares in thousands, except per share data) 2019 Quarterly Financial Data: Fourth Third Second First Interest income $ 53,369 $ 54,300 $ 54,060 $ 52,364 Interest expense 10,940 11,655 11,425 10,841 Net interest income 42,429 42,645 42,635 41,523 Provision for credit losses 2,225 1,533 2,073 2,680 Net interest income after provision for credit losses 40,204 41,112 40,562 38,843 Noninterest income 16,170 16,599 16,356 16,297 Noninterest expense 37,480 36,267 36,781 35,562 Income before income taxes 18,894 21,444 20,137 19,578 Income tax expense 3,384 3,782 3,669 3,499 Net income $ 15,510 $ 17,662 $ 16,468 $ 16,079 Per share data: Weighted average shares outstanding - basic earnings per share 29,232 29,211 29,181 29,146 Weighted average shares outstanding - diluted earnings per share 29,313 29,285 29,243 29,205 Basic earnings per share $ 0.53 $ 0.60 $ 0.56 $ 0.55 Diluted earnings per share $ 0.53 $ 0.60 $ 0.56 $ 0.55 Dividends declared per share $ 0.20 $ 0.20 $ 0.20 $ 0.20

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Organization	Organization Univest Financial Corporation (the Corporation) through its wholly owned subsidiary, Univest Bank and Trust Co. (the Bank), is engaged in domestic banking services for individuals, businesses, municipalities and non-profit organizations. The Bank is the parent company of Girard Investment Services, LLC, a registered introducing broker-dealer and a licensed insurance agency, Girard Advisory Services, LLC, a registered investment advisory firm, and Girard Pension Services, LLC, a registered investment advisor, which provides investment consulting and management services to municipal entities. The Bank is also the parent company of Univest Insurance, LLC, an independent insurance agency, and Univest Capital, Inc., an equipment financing business. The Bank's subsidiaries enhance the traditional banking services provided by the Bank. The Bank serves Bucks, Berks, Chester, Cumberland, Dauphin, Delaware, Lancaster, Lehigh, Montgomery, Northampton, Philadelphia and York Counties in Pennsylvania and Atlantic and Cape May Counties in New Jersey through 40 banking offices and provides banking services to the residents and employees of 14 retirement communities. On January 25, 2021, the Bank opened a banking office in York County, Pennsylvania, and on January 29, 2021, the Bank closed two banking offices in Montgomery County, Pennsylvania. These branch closures were completed as part of the Corporation's branch optimization plan that was announced in the fourth quarter of 2020.
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts of the Corporation and its wholly owned subsidiaries, including the Bank as the Corporation's primary subsidiary. All significant intercompany balances and transactions have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the current-year presentation. Assets held by the Corporation in a fiduciary or agency capacity for its customers are not included in the consolidated financial statements since such items are not assets of the Corporation.
Use of Estimates	Use of EstimatesThe preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles (U.S. GAAP) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant changes include fair value measurement of investment securities available-for-sale and the determination of the allowance for credit losses
Earnings per Share	Earnings per Share The Corporation uses the two-class method to calculate earnings per share as the unvested restricted stock awards outstanding under the Corporation's equity incentive plans are participating shares with nonforfeitable rights to dividends. Restricted stock awards granted prior to January 1, 2019 represent participating shares. Restricted stock units granted subsequent to January 1, 2019 do not contain nonforfeitable dividend rights and are therefore not participating shares. Under the two-class method, earnings per common share are computed by dividing the sum of distributed earnings to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of common shares outstanding for the period. In applying the two-class method, undistributed earnings are allocated to both common shares and participating securities based on the number of weighted average shares outstanding during the period. Diluted earnings per share reflect additional common shares that would have been outstanding if options on common shares had been exercised. Potential common shares that may be issued by the Corporation relate to outstanding stock options and restricted stock units, and are determined using the treasury stock method. The effects of options to issue common stock and unvested restricted stock units are excluded from the computation of diluted earnings per share in periods in which the effect would be antidilutive. Antidilutive options are those options with weighted average exercise prices in excess of the weighted average market value.
Cash and Cash Equivalents	Cash and Cash Equivalents The Corporation has defined those items included in the caption "Cash and due from banks" and "Interest-earning deposits with other banks" as cash and cash equivalents. Interest-earning deposits with other banks consist of deposit accounts with other financial institutions generally having maturities of three months or less. At times, such balances exceed the FDIC limits for insurance coverage.
Investment Securities	Investment Securities Management determines the appropriate classification of debt securities at the time of purchase and re-evaluates such designation as of each balance sheet date. Securities are classified as investment securities held-to-maturity and carried at amortized cost if management has the positive intent and ability to hold the securities to maturity. Securities classified as available-for-sale are those securities that the Corporation intends to hold for an indefinite period of time but not necessarily to maturity. Securities available-for-sale are carried at fair value with unrealized gains and losses recorded in accumulated other comprehensive income, net of estimated income taxes. Any decision to sell a security classified as available-for-sale would be based on various factors, including interest rates, changes in the maturity or mix of the Corporation's assets and liabilities, liquidity needs, regulatory capital considerations and other factors. Securities purchased with the intention of recognizing short-term profits are placed in the trading account and are carried at fair value. The Corporation did not have any trading account securities at December 31, 2020 or 2019. Purchase premiums and discounts are recognized in interest income using the interest method over the expected life of the securities except for premiums on callable debt securities, which are amortized to the next call date. D ue to volatility in the financial markets, there is the risk that any future fair value could vary from that disclosed in the accompanying financial statements. Realized gains and losses on the sale of investment securities are recorded on the trade date, determined using the specific identification method, and are included in the consolidated statements of income. The Corporation measures expected credit losses on held-to-maturity debt securities, which are comprised of U.S. government agency securities and residential mortgage-backed securities. The Corporation's residential mortgage-backed security holdings are issued by U.S. government entities and agencies and are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major rating agencies and have a long history of no credit losses. Accrued interest receivable on held-to-maturity debt securities totaled $441 thousand at December 31, 2020 and is included within Accrued interest receivable and other assets. This amount is excluded from the estimate of expected credit losses. Held-to-maturity debt securities are typically classified as nonaccrual when the contractual payment of principal or interest has become 90 days past due or management has serious doubts about the further collectability of principal or interest. When held-to-maturity debt securities are placed on nonaccrual status, unpaid interest credited to income is reversed. The Corporation measures expected credit losses on available-for-sale debt securities when the Corporation does not intend to sell, or when it is not more likely than not that it will be required to sell, the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security's amortized cost basis is written down to fair value through income. For available-for-sale debt securities that do not meet the aforementioned criteria, the Corporation evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, the Corporation considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If this evaluation indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, equal to the amount that the fair value is less than the amortized cost basis. Economic forecast data is utilized to calculate the present value of expected cash flows. The Corporation obtains its forecast data through a subscription to a widely recognized and relied upon company who publishes various forecast scenarios. Management evaluates the various scenarios to determine a reasonable and supportable scenario, and utilizes a single scenario in the model. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. The allowance for credit losses on available-for-sale debt securities is included within Investment securities available-for-sale on the consolidated balance sheet. Changes in the allowance for credit losses are recorded within Provision for credit losses on the consolidated statement of income. Losses are charged against the allowance when the Corporation believes the collectability of an available-for-sale security is in jeopardy or when either of the criteria regarding intent or requirement to sell is met. Accrued interest receivable on available-for-sale debt securities totaled $477 thousand at December 31, 2020 and is included within Accrued interest receivable and other assets on the consolidated balance sheet. This amount is excluded from the estimate of expected credit losses. Available-for-sale debt securities are typically classified as nonaccrual when the contractual payment of principal or interest has become 90 days past due or management has serious doubts about the further collectability of principal or interest. When available-for-sale debt securities are placed on nonaccrual status, unpaid interest credited to income is reversed.
Federal Home Loan Bank Stock, Federal Reserve Bank Stock and Certain Other Investments without Readily Determinable Fair Values	Federal Home Loan Bank Stock, Federal Reserve Bank Stock and Certain Other Investments without Readily Determinable Fair Values At December 31, 2020 and 2019, the Bank held $14.6 million in Federal Reserve Bank stock as required by the Federal Reserve Bank. The Bank is a member of the FHLB, and as such, is required to hold FHLB stock as a condition of membership as determined by the FHLB. The Bank is required to hold additional stock in the FHLB in relation to the level of outstanding borrowings. The Bank held FHLB stock of $13.5 million at December 31, 2020 and 2019. Because ownership is restricted, the fair values of these investments are not readily determinable. As such, these investments are recorded at cost and periodically evaluated for impairment based on ultimate recovery of par value. The Corporation determined there was no impairment of its investments in these stocks at December 31, 2020 or 2019.
Loans Held For Sale	Loans Held for SaleThe Corporation may elect the fair value option for loans intended for sale in the secondary market. This election is made on a loan level basis at the time of origination, if the fair value option is not elected, loans held for sale were carried at the lower of aggregate cost or estimated fair value. As of December 31, 2020, loans held for sale were accounted for under the fair value option. Cash payments and cash receipts resulting from acquisitions and sales of loans are classified as operating cash flows if those loans are acquired specifically for resale. Cash receipts resulting from sales of loans that were not specifically acquired for resale are classified as investing cash inflows regardless of a change in the purpose for holding those loans.
Loans and Leases	Loans and Leases Loans that the Corporation has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at amortized cost, which is the principal amount, net of deferred fees and costs, and the allowance for credit losses. Lease financings are stated at net investment amount, consisting of the present value of lease payments and unguaranteed residual value, plus initial direct costs. A loan or lease is typically classified as nonaccrual when the contractual payment of principal or interest has become 90 days past due or management has serious doubts about the further collectability of principal or interest, even though the loan or lease is currently performing. When a loan or lease is classified as nonaccrual, the accrual of interest on such a loan or lease is discontinued. A loan or lease may remain on accrual status if it is in the process of collection and is either guaranteed or well secured. When a loan or lease is placed on nonaccrual status, unpaid interest credited to income is reversed and the amortization of the deferred fees and costs is suspended. Interest payments received on nonaccrual loans and leases are either applied against principal or reported as interest income, according to management's judgment as to the ultimate collectability of principal. Loans and leases are usually restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time, and the ultimate collectability of the total contractual principal and interest is no longer in doubt. A loan or lease is classified as a troubled debt restructuring when a concession has been granted to an existing borrower experiencing financial difficulties. The Corporation grants concessions to existing borrowers primarily related to extensions of interest-only payment periods and an occasional payment modification. These modifications typically are for up to one year. The goal when restructuring a credit is to establish a reasonable period of time to provide cash flow relief to customers experiencing cash flow difficulties. Accruing troubled debt restructured loans are primarily comprised of loans on which interest is being accrued under the restructured terms, and the loans are current or less than ninety days past due. The Corporation modified certain loans and leases via principal and/or interest deferrals in accordance with Section 4013 of the CARES Act and the Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customer Affected by the Coronavirus during the year ended December 31, 2020 . Accordingly, these loans and leases were not categorized as troubled debt restructurings. Accrued interest receivable on loans and leases held for investment totaled $15.3 million at December 31, 2020 and is included within Accrued interest receivable and other assets on the consolidated balance sheet. $14.2 million of this amount is excluded from the estimate of expected credit losses. $1.1 million of this amount represents accrued interest receivable on loans that were modified in accordance with Section 4013 of the CARES Act and the Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customer Affected by the Coronavirus and includes an allowance for credit losses of $18 thousand. Overdraft deposits are re-classified as loans and are included in the total loans and leases on the balance sheet.
Loan and Lease Fees	Loan and Lease Fees Fees collected upon loan or lease originations and certain direct costs of originating loans and leases are deferred and recognized over the contractual lives of the related loans and leases as yield adjustments using the interest method. Upon prepayment or other disposition of the underlying loans and leases before their contractual maturities, any associated unearned fees or unamortized costs are recognized. Initial direct costs, comprised of commissions paid that would not have been incurred if the lease had not been obtained, are deferred and amortized over the life of the contract, and are classified within net interest income on leases.
Allowance for Credit Losses on Loans and Leases	Allowance for Credit Losses on Loans and Leases The allowance for credit losses (ACL) on loans and leases is a valuation account that is used to present the net amount expected to be collected on a loan or lease. The ACL on loans and leases is measured on a collective (pooled) basis when similar risk characteristics exist. The ACL on loans and leases is adjusted through provision for credit losses as a charge against, or credit to, earnings. Loans and leases deemed to be uncollectible are charged against the ACL on loans and leases, and any subsequent recoveries are credited to the ACL on loans and leases. Management evaluates the ACL on loans and leases on a quarterly basis and when changes in the reserve are necessary, an adjustment is made. The ACL on loans and leases is included within Allowance for credit losses, loans and leases on the consolidated balance sheet. Changes in the ACL on loans and leases are recorded within Provision for credit losses on the consolidated statement of income. Management utilizes a discounted cash flow (DCF) model to calculate the present value of the expected cash flows for pools of loans and leases that share similar risk characteristics and compares the results of this calculation to the amortized cost basis to determine its allowance for credit loss balance. Management uses relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts in calculating its ACL. Historical credit loss experience provides one of the bases for the estimation of expected credit losses. Management determines whether there is a need to make qualitative adjustments to historical loss information by monitoring certain factors including differences in current loan-specific risk characteristics as well as for changes in external or environmental conditions, or other relevant factors. The contractual term used in projecting the cash flows of a loan is based on the maturity date of a loan, and is adjusted for prepayment or curtailment assumptions which may shorten that contractual time period. Options to extend are considered by management in determining the contractual term. The key inputs to the DCF model are (1) probability of default, (2) loss given default, (3) prepayment and curtailment rates, (4) reasonable and supportable economic forecasts, (5) forecast reversion period, (6) expected recoveries on charged off loans, and (7) discount rate. Probability of Default (PD) In order to incorporate economic factors into forecasting within the DCF model, management elected to use the Loss Driver method to generate the PD rate inputs. The Loss Driver method analyzes how one or more economic factors change the default rate using a statistical regression analysis. Management selects economic factors for each loan pool that have strong correlations to historical default rates, and reviews the economic factors selected on an annual basis. For the period ended December 31, 2020, the factors management selected were unemployment rate, GDP, housing pricing index and retail sales. Loss Given Default (LGD) Management elected to use the Frye Jacobs parameter for determining the LGD input, which is an estimation technique that derives a LGD input from segment specific risk curves that correlates LGD with PD. Prepayment and Curtailment rates Prepayment Rates: Loan and lease level transaction data is used to calculate quarterly prepayment rates using available historical loan and lease level data. Those quarterly rates are annualized and the average of the annualized rates is used in the DCF calculation for fixed payment or term loans. Rates are calculated for each pool. Curtailment Rates: Loan level transaction data is used to calculate annual curtailment rates using available historical loan level data. The average of the historical rates is used in the DCF model for interest only payment or line of credit type loans. Rates are calculated for each pool. Reasonable and Supportable Forecasts The forecast data used in the DCF model is obtained via a subscription to a widely recognized and relied upon company who publishes various forecast scenarios. Management evaluates the various scenarios to determine a reasonable and supportable scenario, and utilizes a single scenario in the model. Forecast Reversion Period Management uses forecasts to predict how economic factors will perform and has determined to use a four quarter forecast period as well as a four quarter straight-line reversion period to historical averages (also commonly referred to as the mean reversion period). Expected Recoveries on Charged-off Loans Management performs an analysis to estimate recoveries that could be reasonably expected based on historical experience in order to account for expected recoveries on loans that have already been fully charged-off and are not included in the ACL calculation. Discount Rate The effective interest rate of the underlying loans and leases of the Corporation serves as the discount rate applied to the expected periodic cash flows. Management adjusts the effective interest rate used to discount expected cash flows to incorporate expected prepayments which can be reasonably estimated for each pool. Individual Evaluation Management evaluates individual instruments for expected credit losses when those instruments do not share similar risk characteristics with instruments evaluated using a collective (pooled) basis. Instruments will not be included in both collective and individual analyses. Individual analysis will establish a specific reserve for instruments in scope. All loans on nonaccrual status are individually evaluated for a specific reserve. Management considers a financial asset as collateral-dependent when the debtor is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral, based on management's assessment as of the reporting date.
Premises and Equipment	Premises and Equipment Land is stated at cost, and premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed on the straight-line method and charged to operating expenses over the estimated useful lives of the assets or, for leasehold improvements, over the shorter of the expected life of the related lease or the remaining estimated useful life of the asset. The estimated useful life for new buildings constructed on land owned is forty years. For new buildings constructed on leased land or land improvements, the estimated useful life is the initial term including anticipated renewable terms, typically not exceeding twenty-five years. The useful life of purchased existing buildings is the estimated remaining useful life at the time of the purchase. Furniture, fixtures and equipment have estimated useful lives ranging from three
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The Corporation accounts for its acquisitions using the purchase accounting method. Purchase accounting requires the total purchase price to be allocated to the estimated fair values of assets acquired and liabilities assumed, including certain intangible assets that must be recognized. Typically, this allocation results in the purchase price exceeding the fair value of net assets acquired, which is recorded as goodwill. Core deposit intangibles are a measure of the value of checking, money market and savings deposits acquired in business combinations accounted for under the purchase method. Core deposit intangibles are amortized using the sum of the year's digits over their estimated useful lives of up to fifteen years. Customer related intangibles are amortized over their estimated useful lives of five Mortgage servicing rights are recognized as separate assets when loans are sold and the servicing rights are retained. Capitalized mortgage servicing rights are reported in other intangible assets on the consolidated balance sheets and are amortized into noninterest income in proportion to, and over the period of, estimated net servicing income on a basis similar to the interest method and an accelerated amortization method for loan payoffs. Mortgage servicing rights are evaluated for impairment, on a quarterly basis, based upon the estimated fair value of the rights as compared to their amortized cost. The Corporation estimates the fair value of mortgage servicing rights using discounted cash flow models that calculate the present value of estimated future net servicing income. The model uses readily available prepayment speed assumptions for the current interest rates of the portfolios serviced. The impairment test stratifies servicing assets based on predominant risk characteristics of the underlying financial assets such as the term and interest rate. In conjunction with the impairment test, the Corporation records a valuation allowance when the fair value of the stratified servicing asset is less than amortized cost. Subsequent changes in the valuation of the assets are recorded as either an increase or a reduction of the valuation allowance, however, if the fair value exceeds amortized cost, such excess will not be recognized.
Bank Owned Life Insurance	Bank Owned Life InsuranceThe Corporation has invested in bank-owned life insurance (BOLI). BOLI involves the purchasing of life insurance by the Corporation for certain employees. The Corporation is the owner and beneficiary of the policies, however certain policies include split-dollar endorsements. Under these endorsements, beneficiaries of the insured individuals are entitled to a portion of the proceeds from the policy upon death of the insured. The life insurance investment is carried at the net cash surrender value of the underlying policies. Changes in the net cash surrender value of these policies are reflected in noninterest income. Proceeds from and purchases of bank-owned life insurance are reflected on the consolidated statements of cash flows under investing activities. The Corporation recognizes a liability for the future death benefit for certain endorsement split-dollar life insurance arrangements that provide an employee with a death benefit in a postretirement/termination period.
Other Real Estate Owned	Other Real Estate Owned Other real estate owned (OREO) represents properties that the Corporation has acquired through foreclosure by either accepting a deed in lieu of foreclosure, or by taking possession of assets that were used as loan collateral. The Corporation reports OREO at the lower of cost or fair value less cost to sell, adjusted periodically based on current appraisals. Capital improvement expenses associated with the construction or repair of the property are capitalized as part of the cost of the OREO asset. Write-downs and any gain or loss upon the sale of OREO is recorded in Other income. OREO is reported in Accrued interest receivable and other assets on the consolidated balance sheet.
Retirement Plans and Other Postretirement Benefits	Retirement Plans and Other Postretirement Benefits Substantially all employees who were hired before December 8, 2009 are covered by a noncontributory retirement plan. Effective December 31, 2009, the benefits previously accrued under the noncontributory retirement plan were frozen and the plan was amended and converted to a cash balance plan, with participants not losing any pension benefits already earned in the plan. Prior to the cash balance plan conversion effective December 31, 2009, the plan provided benefits based on a formula of each participant's final average pay. Future benefits under the cash balance plan accrue by crediting participants annually with an amount equal to a percentage of earnings in that year based on years of credited service as defined in the plan. Employees hired on or after December 8, 2009 are not eligible to participate in the noncontributory retirement plan. The Corporation also maintains a non-qualified benefit plan that provides supplemental executive retirement benefits to certain former executives, a portion of which is in excess of limits imposed on qualified plans by federal tax law. This non-qualified benefit plan is not offered to new participants and all current participants are now retired. The Corporation provides certain postretirement healthcare and life insurance benefits for retired employees. The Corporation's measurement date for plan assets and obligations is fiscal year-end. The Corporation recognizes on its consolidated balance sheet the funded status of its defined pension plans and changes in the funded status of the plan in the year in which the changes occur. An under-funded position would create a liability and an over-funded position would create an asset, with a correlating deferred tax asset or liability. The net impact would be an adjustment to equity as accumulated other comprehensive income (loss). The Corporation recognizes as a component of other comprehensive income (loss), net of tax, the actuarial gains and losses and the prior service costs and credits that arise during the period. The Corporation sponsors a 401(k) deferred salary savings plan, which is a qualified defined contribution plan, and which covers all employees of the Corporation and its subsidiaries, and provides that the Corporation make matching contributions as defined by the plan. The Corporation sponsors a Supplemental Non-Qualified Pension Plan which was established in 1981 prior to the existence of 401(k) deferred salary savings, employee stock purchase and long-term incentive plans and therefore is not offered to new participants. All current participants are now retired. This non-qualified plan is accounted for under guidance for deferred compensation arrangements.
Derivative Financial Instruments	Derivative Financial Instruments The Corporation recognizes all derivative financial instruments on its balance sheet at fair value. Derivatives that are not hedges must be adjusted to fair value through income. If a derivative is a hedge, depending on the nature of the hedge, changes in the fair value of the derivative are either offset against the change in fair value of the hedged assets, liabilities, or firm commitments through earnings, or recognized in other comprehensive income until the underlying transaction is recognized in earnings. To determine fair value, the Corporation uses third-party pricing models that incorporate assumptions about market conditions and risks that are current at the reporting date. The Corporation may use interest-rate swap agreements to modify interest rate characteristics from variable to fixed or fixed to variable in order to reduce the impact of interest rate changes on future net interest income. The Corporation accounts for its interest-rate swap contracts in cash flow hedging relationships by establishing and documenting the effectiveness of the instrument in offsetting the change in cash flows of assets or liabilities that are being hedged. To determine effectiveness, the Corporation performs an analysis to identify if changes in fair value of the derivative correlate to the equivalent changes in the forecasted interest receipts related to a specified hedged item. Recorded amounts related to interest-rate swaps are included in other assets or liabilities. The entire change in the fair values of the derivative instruments designated as hedges of future cash flows are recognized in accumulated other comprehensive income until the underlying forecasted transactions occur, at which time the deferred gains and losses are recognized in interest income. In a fair value hedge, the entire change in the fair values of the interest rate swap and hedged item included in the assessment of hedge effectiveness is recorded in interest income effective January 1, 2019. Prior to January 1, 2019, the difference between changes in the fair values of the interest rate swap agreement and the hedged item represents hedge ineffectiveness and was recorded in other noninterest income. The Corporation performs an assessment, both at the inception of the hedge and quarterly thereafter, to determine whether these derivatives are highly effective in offsetting changes in the value of the hedged items. The Corporation has agreements with third-party financial institutions whereby the third-party financial institution enters into interest rate derivative contracts with loan customers referred to them by the Corporation. By the terms of the agreements, the third-party financial institution has recourse to the Corporation for any exposure created under each swap contract in the event the customer defaults on the swap agreement and the agreement is in a paying position to the third-party financial institution. The Corporation records the fair value of credit derivatives in other liabilities on the consolidated balance sheets. The Corporation recognizes changes in the fair value of credit derivatives, net of any fees received, in other noninterest income in the consolidated statements of income. In connection with its mortgage banking activities, the Corporation enters into commitments to originate certain fixed-rate residential mortgage loans for customers, also referred to as interest rate locks. In addition, the Corporation enters into forward commitments for the future sale of mortgage loans to third-party investors to hedge the effect of changes in interest rates on the value of the interest rate locks. Forward loan sale commitments may also be in the form of commitments to sell individual mortgage loans at a fixed price at a future date. Both the interest rate locks and the forward loan sale commitments are accounted for as derivatives and carried at fair value. Gross derivative assets and liabilities are recorded within other assets and other liabilities on the consolidated balance sheets, with changes in fair value during the period recorded within the net gain on mortgage banking activities on the consolidated statements of income.
Off-balance Sheet Commitments and Reserve For Unfunded Commitments	Off-balance Sheet Commitments and Reserve for Unfunded Commitments Commitments are made to accommodate the financial needs of customers. The Corporation uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet financial instruments. The Corporation maintains a reserve for off-balance sheet credit exposures that are currently unfunded. Management calculates funding rates using loan level data history at the portfolio level. The current quarter's funding rate is subtracted from the maximum historical funding rate which is then applied to each pool's total available line of credit. The applicable ACL pool level loss rates for the current quarter are then applied to calculate the reserve for unfunded commitments liability each period.
Lease Liabilities and Right-of-Use Assets	Lease Liabilities and Right-of-Use Assets The Corporation adopted ASU 2016-02 effective January 1, 2019. The Corporation and its subsidiaries are obligated under non-cancelable operating leases for premises for certain financial centers and other office locations The Corporation determines if an arrangement is a lease at inception by assessing whether a contract contains a right to control an identified asset for a period of time in exchange for consideration. Operating leases are included in operating lease right-of-use assets and operating lease liabilities in the consolidated balance sheet. For purposes of calculating operating lease liabilities, lease terms include options to extend or terminate the lease when it is reasonably certain that the Corporation will exercise that option and begins when the Corporation has control and possession of the leased property, which may be before rental payments are due under the lease. Right-of use assets and operating lease liabilities are recognized based on the present value of lease payments, discounted using the Corporation's incremental borrowing rate, over the lease term at the possession date. The Corporation determines its incremental borrowing rate using publicly available information available for debt issuers with similar credit ratings as the Bank, as the substantial majority of the Corporation's leases are related to properties of the Bank. The Corporation separately accounts for lease and non-lease components such as property taxes, insurance, and maintenance costs. Operating lease expense for the Corporation's leases, which generally have escalating rental payments over the term of the lease, is recognized on a straight-line basis over the lease term. Most leases include one or more options to renew, with renewal terms generally containing one or more five-year renewal options. At December 31, 2020, the Corporation's leases have remaining terms of 4 months to 22 years.
Income Taxes	Income TaxesThere are two components of income tax expense: current and deferred. Current income taxes approximates cash to be paid or refunded for taxes for the applicable period. Deferred income taxes are provided for temporary differences between amounts reported for financial statement and tax purposes. Deferred income taxes are computed using the asset and liability method, such that deferred tax assets and liabilities are recognized for the expected future tax consequences of temporary differences between financial reporting amounts and the tax basis of existing assets and liabilities based on currently enacted tax laws and tax rates in effect for the periods in which the differences are expected to reverse. Deferred tax assets are subject to management's judgment based upon available evidence that future taxes are "more likely than not" to be realized. If management determines that the Corporation is not more likely than not to realize some or all of the net deferred tax asset in the future, a charge to income tax expense may be required to reduce the value of the net deferred tax asset to the expected realizable value. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized. Penalties are recorded in noninterest expense in the year they are assessed and paid and are treated as a nondeductible expense for tax purposes. Interest is recorded in noninterest expense in the year it is assessed and paid and is treated as a deductible expense for tax purposes.
Stock-Based Compensation	Stock-Based Compensation The fair value of share-based awards is recognized as compensation expense over the vesting period, on a straight-line basis, based on the grant-date fair value of the awards. The Corporation uses the Black-Scholes Model to estimate the fair value of each option on the date of grant. The Black-Scholes Model estimates the fair value of employee stock options using a pricing model which takes into consideration the exercise price of the option, the expected life of the option, the current market price and its expected volatility, the expected dividends on the stock and the current risk-free interest rate for the expected life of the option. The Corporation records forfeitures as they occur. Options issu e d become exercisable and vest equally over a three-year period and remain exercisable for a period not exceeding ten years from the date of grant. The fair value of restricted stock is equivalent to the fair value of the Corporation's common stock on the date of grant. The Corporation grants performance-based and service-based restricted stock. The performance-based restricted stock vests based upon the Corporation's performance with respect to certain financial measures over a three-year period and based on the passage of time. The service-based restricted stock vests based on the passage of time. The fair value of restricted stock is recognized as compensation expense over the vesting period and for performance-based restricted stock is adjusted for a probability factor of achieving the performance goals.
Revenue Recognition	Revenue Recognition The Corporation's revenue is the sum of net interest income and noninterest income. Revenues are recognized when obligations under the terms of contracts with customers are satisfied, including the transfer of control of the promised goods or services to customers, in an amount that reflects the consideration the Corporation expects to be entitled to in exchange for those goods or services. The Corporation provides services to customers which have related performance obligations that are completed to recognize revenue. The Corporation's revenues are generally recognized either immediately upon the completion of the services or over time as the services are performed. Any services performed over time generally require services to be rendered each period and therefore progress in completing these services is measured based upon the passage of time.
Marketing and Advertising Costs	Marketing and Advertising Costs The Corporation's accounting policy is to expense marketing and advertising costs as incurred.
Recent Accounting Pronouncements	Accounting Pronouncements Adopted in 2020 In June 2016, the FASB issued ASU No. 2016-13, " Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments" and subsequent related updates. This ASU replaces the incurred loss methodology for recognizing credit losses and requires businesses and other organizations to measure the current expected credit losses (CECL) on financial assets measured at amortized cost, including loans and held-to-maturity securities, net investments in leases, off-balance sheet credit exposures such as unfunded commitments, and other financial instruments. In addition, ASC 326 requires credit losses on available-for-sale debt securities to be presented as an allowance rather than as a write-down when management does not intend to sell or believes that it is not more likely than not they will be required to sell. This guidance became effective on January 1, 2020 for the Corporation. The results reported for periods beginning after January 1, 2020 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable accounting standards. The Corporation adopted this guidance, and subsequent related updates, using the modified retrospective approach for all financial assets measured at amortized cost, including loans and held-to-maturity securities, net investments in leases, available-for-sale debt securities and unfunded commitments. On January 1, 2020, the Corporation recorded a cumulative effect decrease to retained earnings of $11.3 million, net of tax, of which $10.2 million related to loans and net investment in leases, $905 thousand related to unfunded commitments, and $237 thousand related to available-for-sale securities. The Corporation adopted the provisions of ASC 326 related to financial assets purchased with credit deterioration (PCD) that were previously classified as purchased credit impaired (PCI) and accounted for under ASC 310-30 using the prospective transition approach. In accordance with the standard, management did not reassess whether PCI assets met the criteria of PCD assets as of the date of adoption. On January 1, 2020, the amortized cost basis of the PCD assets were adjusted to reflect the addition of $84 thousand of the allowance for credit losses (ACL). The Corporation adopted the provisions of ASC 326 related to presenting other-than-temporary impairment on available-for-sale debt securities prior to January 1, 2020 using the prospective transition approach, though no such charges had been recorded on the securities held by the Corporation as of the date of adoption. In April 2019, the FASB issued ASU No. 2019-04, "Codification Improvements to Financial Instruments-Credit Losses (Topic 326), Derivatives and Hedging (Topic 815) and Financial Instruments (Topic 825)." The amendments to Topic 326 address how a company considers recoveries and extension options when estimating expected credit losses. The ASU clarifies that a company's estimate of expected credit losses should include expected recoveries of financial assets, including recoveries of amounts expected to be written off and those previously written off. The ASU also clarifies that a company should consider contractual extension or renewal options that it cannot unconditionally cancel when determining the contractual term over which expected credit losses are measured. This guidance became effective on January 1, 2020 for the Corporation. The Corporation adopted ASU No. 2019-04 and incorporated the applicable items into the CECL model described as follows. Management addressed the provision in ASU No. 2019-04 related to how a company considers recoveries by performing an analysis to estimate recoveries that could be reasonably expected based on historical experience as described further above. Management addressed the provision in ASU No. 2019-04 related to how a company considers extension options when estimating expected credit losses as described further above. Management reviewed the provision in the ASU No. 2019-04 related to Topics 815 and 825 and determined these amendments did not have a material impact on the Corporation's financial statements. The Corporation expanded the pooling utilized under the legacy incurred loss method to include additional segmentation based on risk. The impact of the change from the incurred loss model to the current expected credit loss model is detailed below. January 1, 2020 (Dollars in thousands) Pre-adoption Adoption Impact As Reported Assets: ACL on debt securities: available-for-sale: Corporate bonds $ — $ 300 $ 300 ACL on loans and leases: Commercial, financial and agricultural 8,759 5,284 14,043 Real estate-commercial 15,750 6,208 21,958 Real estate-construction 2,446 29 2,475 Real estate-residential secured for business purpose 2,622 2,502 5,124 Real estate-residential secured for personal purpose 2,713 (706) 2,007 Real estate-home equity secured for personal purpose 1,076 (364) 712 Loans to individuals 470 104 574 Lease financings 1,311 (135) 1,176 Unallocated 184 — 184 Total ACL on loans and leases 35,331 12,922 48,253 Liabilities: Reserve for unfunded commitments $ 420 $ 1,145 $ 1,565 In August 2018, the FASB issued ASU No. 2018-13, " Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement." This ASU applies to all entities that are required, under existing GAAP, to make disclosures about recurring or nonrecurring fair value measurements. Disclosures removed by this ASU are the amount and reasons for transfers between Level 1 and Level 2, the policy for timing of transfers between levels and the valuation processes for Level 3 measurements. This ASU modifies certain disclosures relating to investments in certain entities that calculate net asset value, changes in unrealized gains and losses included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. The Corporation adopted this guidance and the related required disclosures prospectively on January 1, 2020. The adoption did not have a material impact on the Corporation's financial statements. In January 2017, the FASB issued ASU No. 2017-04, "Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment." This ASU eliminates Step 2 of the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit's goodwill with the carrying amount of that goodwill. Under the new guidance, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. Additionally, an entity should consider income tax effects from any tax-deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss, if applicable. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. The Corporation adopted this guidance as of January 1, 2020. The adoption did not have a material impact on the Corporation's financial statements. Recent Accounting Pronouncements Yet to Be Adopted In August 2018, the FASB issued ASU No. 2018-14, " Compensation – Retirement Benefits – Defined Benefit Plans – General (Subtopic 715-20): Disclosure Framework – Changes to the Disclosure Requirements for Defined Benefit Plans." The amendments in this ASU modify the disclosure requirements for employers that sponsor defined benefit plans or other postretirement plans. Disclosures removed by this ASU include the following: (1) amounts in accumulated other comprehensive income expected to be recognized in net periodic benefit costs over the next fiscal year; (2) the amount and timing of plan assets expected to be returned to the employer; and (3) the effects of a one percentage point change in assumed health care cost trend rates on the net periodic benefit costs and the benefit obligation for postretirement health care benefits. Additional disclosures required by this ASU include: (1) the weighted-average interest crediting rates used in an entity's cash balance pension plans and other similar plans; and (2) explanations for reasons for significant changes in the benefit obligation or plan assets. All amendments should be applied retrospectively. This ASU is effective on January 1, 2021 for the Corporation. The Corporation does not expect the adoption of this ASU will have a material impact on the Corporation's financial statement disclosures but will result in revised disclosures for retirement plans and other postretirement benefits. In December 2019, the FASB issued ASU No. 2019-12, " Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes." The ASU adds new guidance to simplify accounting for income taxes, changes the accounting for certain income tax transactions and makes minor improvements to the codification. This ASU is effective on January 1, 2021 for the Corporation. The Corporation does not expect the adoption of this ASU will have a material impact on the Corporation's financial statements. In January 2020, the FASB issued ASU No. 2020-01, "Investments—Equity Securities (Topic 321): Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815): Clarifying the Interactions between Topic 321, Topic 323, and Topic 815." This ASU 2020-01 clarifies the interactions between ASC 321, ASC 323 and ASC 815 and addresses accounting for the transition into and out of the equity method and measuring certain purchased options and forward contracts to acquire investments. This ASU is effective on January 1, 2022 for the Corporation. The Corporation does not expect the adoption of this ASU will have a material impact on the Corporation's financial statements. In March 2020, the FASB issued ASU No. 2020-04, " Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting."

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Accounting Standards Update and Change in Accounting Principle	The impact of the change from the incurred loss model to the current expected credit loss model is detailed below. January 1, 2020 (Dollars in thousands) Pre-adoption Adoption Impact As Reported Assets: ACL on debt securities: available-for-sale: Corporate bonds $ — $ 300 $ 300 ACL on loans and leases: Commercial, financial and agricultural 8,759 5,284 14,043 Real estate-commercial 15,750 6,208 21,958 Real estate-construction 2,446 29 2,475 Real estate-residential secured for business purpose 2,622 2,502 5,124 Real estate-residential secured for personal purpose 2,713 (706) 2,007 Real estate-home equity secured for personal purpose 1,076 (364) 712 Loans to individuals 470 104 574 Lease financings 1,311 (135) 1,176 Unallocated 184 — 184 Total ACL on loans and leases 35,331 12,922 48,253 Liabilities: Reserve for unfunded commitments $ 420 $ 1,145 $ 1,565

Earnings per Share (Tables)

Earnings per Share (Tables)	12 Months Ended
	Dec. 31, 2020
Earnings Per Share, Basic and Diluted [Abstract]
Basic and Diluted Earnings Per Share	The following table sets forth the computation of basic and diluted earnings per share: For the Years Ended December 31, (Dollars and shares in thousands, except per share data) 2020 2019 2018 Numerator: Net income $ 46,916 $ 65,719 $ 50,543 Net income allocated to unvested restricted stock awards (69) (236) (333) Net income allocated to common shares $ 46,847 $ 65,483 $ 50,210 Denominator: Weighted average shares outstanding 29,244 29,300 29,370 Average unvested restricted stock awards (46) (107) (193) Denominator for basic earnings per share —weighted-average shares outstanding 29,198 29,193 29,177 Effect of dilutive securities—employee stock options and restricted stock units 70 68 82 Denominator for diluted earnings per share —adjusted weighted-average shares outstanding 29,268 29,261 29,259 Basic earnings per share $ 1.60 $ 2.24 $ 1.72 Diluted earnings per share $ 1.60 $ 2.24 $ 1.72 Average anti-dilutive options and restricted stock units excluded from computation of diluted earnings per share 491 325 319

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Amortized Cost and Estimated Fair Value of Held to Maturity Securities and Available for Sale Securities by Contractual Maturity	The following table shows the amortized cost, the estimated fair value and the allowance for credit losses of the held-to-maturity securities and available-for-sale securities at December 31, 2020 and the amortized cost and the estimated fair value of the held-to-maturity securities and available-for-sale securities at December 31, 2019, by contractual maturity within each type: At December 31, 2020 At December 31, 2019 (Dollars in thousands) Amortized Gross Gross Allowance for Credit Losses Fair Value Amortized Gross Gross Fair Value Securities Held-to-Maturity U.S. government corporations and agencies: After 1 year to 5 years $ 6,998 $ 171 $ — — $ 7,169 $ 6,997 $ 66 $ — $ 7,063 6,998 171 — — 7,169 6,997 66 — 7,063 Residential mortgage-backed securities: After 5 years to 10 years 6,325 253 — — 6,578 9,083 129 — 9,212 Over 10 years 137,934 4,644 — — 142,578 175,972 2,749 (110) 178,611 144,259 4,897 — — 149,156 185,055 2,878 (110) 187,823 Total $ 151,257 $ 5,068 $ — $ — $ 156,325 $ 192,052 $ 2,944 $ (110) $ 194,886 Securities Available-for-Sale U.S. government corporations and agencies: Within 1 year $ — $ — $ — $ — $ — $ 301 $ — $ (1) $ 300 — — — — — 301 — (1) 300 State and political subdivisions: After 1 year to 5 years 3,560 33 — — 3,593 4,717 23 — 4,740 After 5 years to 10 years 9,881 63 — — 9,944 29,563 292 — 29,855 13,441 96 — — 13,537 34,280 315 — 34,595 Residential mortgage-backed securities: Within 1 year — — — — — 304 9 — 313 After 1 year to 5 years 323 10 — — 333 611 3 (1) 613 After 5 years to 10 years 1,664 58 — — 1,722 36,893 107 (21) 36,979 Over 10 years 110,018 2,153 (63) — 112,108 80,630 378 (453) 80,555 112,005 2,221 (63) — 114,163 118,438 497 (475) 118,460 Collateralized mortgage obligations: After 5 years to 10 years 754 21 — — 775 2,377 6 (22) 2,361 Over 10 years 4,561 — (15) — 4,546 — — — — 5,315 21 (15) — 5,321 2,377 6 (22) 2,361 Corporate bonds: Within 1 year 499 2 — — 501 6,012 1 (4) 6,009 After 1 year to 5 years 29,498 1,440 — (16) 30,922 29,606 596 (61) 30,141 After 5 years to 10 years 60,496 3 (5,450) (853) 54,196 — — — — Over 10 years — — — — — 60,000 — (4,942) 55,058 90,493 1,445 (5,450) (869) 85,619 95,618 597 (5,007) 91,208 Total $ 221,254 $ 3,783 $ (5,528) $ (869) $ 218,640 $ 251,014 $ 1,415 $ (5,505) $ 246,924
Information Related to Sales of Securities Available-for-Sale	The following table presents information related to sales of securities available-for-sale during the years ended December 31, 2020, 2019 and 2018: For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Securities available-for-sale: Proceeds from sales $ 66,421 $ 26,494 $ 1,010 Gross realized gains on sales 885 78 10 Gross realized losses on sales 14 24 — Tax expense related to net realized gains on sales 183 11 2
Schedule of Securities in Unrealized Loss Position	The following table shows the fair value of securities that were in an unrealized loss position for which an allowance for credit losses has not been recorded at December 31, 2020 and 2019, by the length of time those securities were in a continuous loss position. Less than Twelve Months Total (Dollars in thousands) Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized At December 31, 2020 Securities Held-to-Maturity Total $ — $ — $ — $ — $ — $ — Securities Available-for-Sale Residential mortgage-backed securities $ 13,677 $ (62) $ 31 $ (1) $ 13,708 $ (63) Collateralized mortgage obligations 4,545 (15) — — 4,545 (15) Total $ 18,222 $ (77) $ 31 $ (1) $ 18,253 $ (78) At December 31, 2019 Securities Held-to-Maturity Residential mortgage-backed securities $ 26,767 $ (110) $ — $ — $ 26,767 $ (110) Total $ 26,767 $ (110) $ — $ — $ 26,767 $ (110) Securities Available-for-Sale U.S. government corporations and agencies $ — $ — $ 300 $ (1) $ 300 $ (1) Residential mortgage-backed securities 21,827 (62) 48,672 (413) 70,499 (475) Collateralized mortgage obligations — — 1,295 (22) 1,295 (22) Corporate bonds 998 — 65,506 (5,007) 66,504 (5,007) Total $ 22,825 $ (62) $ 115,773 $ (5,443) $ 138,598 $ (5,505)
Available-for-sale Securities, Allowance for Credit Loss Rollforward	The table below presents a rollforward by major security type for the year ended December 31, 2020 of the allowance for credit losses on securities available-for-sale. (Dollars in thousands) Corporate Bonds For the Year Ended December 31, 2020 Securities Available-for-Sale Beginning balance $ — Adjustment to initially apply ASU No. 2016-13 for CECL (300) Change in securities for which a previous expected credit loss was recognized (569) Ending balance $ (869)

Loans and Leases (Tables)

Loans and Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Receivables [Abstract]
Summary of Major Loan and Lease Categories	At December 31, (Dollars in thousands) 2020 2019 Commercial, financial and agricultural $ 892,665 $ 947,029 Paycheck Protection Program 483,773 — Real estate-commercial 2,458,872 2,040,441 Real estate-construction 243,355 232,595 Real estate-residential secured for business purpose 381,446 373,973 Real estate-residential secured for personal purpose 487,600 439,059 Real estate-home equity secured for personal purpose 166,609 174,435 Loans to individuals 27,482 29,883 Lease financings 165,039 149,421 Loans and leases held for investment, net of deferred income 5,306,841 4,386,836 Less: Allowance for credit losses, loans and leases (83,044) (35,331) Net loans and leases held for investment $ 5,223,797 $ 4,351,505 Imputed interest on lease financings, included in the above table $ (17,670) $ (16,340) Net deferred (fees) costs, included in the above table (2,903) 5,999 Overdraft deposits included in the above table 948 407
Schedule of Age Analysis of Past Due Loans and Leases	The following presents, by class of loans and leases, an aging of past due loans and leases, loans and leases which are current and nonaccrual loans and leases at December 31, 2020: Accruing Loans and Leases (Dollars in thousands) 30-59 60-89 90 Days Total Current Total Accruing Loans and Leases Nonaccrual Loans and Leases Total Loans At December 31, 2020 Commercial, financial and agricultural $ 1,104 $ 279 $ 50 $ 1,433 $ 888,405 $ 889,838 $ 2,827 $ 892,665 Paycheck Protection Program — — — — 483,773 483,773 — 483,773 Real estate—commercial real estate and construction: Commercial real estate 3,230 859 945 5,034 2,431,099 2,436,133 22,739 2,458,872 Construction 361 — — 361 242,994 243,355 — 243,355 Real estate—residential and home equity: Residential secured for business purpose 3,726 603 — 4,329 374,331 378,660 2,786 381,446 Residential secured for personal purpose 6,057 80 — 6,137 479,377 485,514 2,086 487,600 Home equity secured for personal purpose 607 32 — 639 164,923 165,562 1,047 166,609 Loans to individuals 190 74 185 449 27,033 27,482 — 27,482 Lease financings 898 291 212 1,401 163,431 164,832 207 165,039 Total $ 16,173 $ 2,218 $ 1,392 $ 19,783 $ 5,255,366 $ 5,275,149 $ 31,692 $ 5,306,841 The following presents, by class of loans and leases, an aging of past due loans and leases, loans and leases which are current, acquired credit impaired loans and nonaccrual loans and leases at December 31, 2019: Accruing Loans and Leases (Dollars in thousands) 30-59 60-89 90 Days Total Current Total Accruing Loans and Leases Acquired Credit Impaired Nonaccrual Loans and Leases Total Loans At December 31, 2019 Commercial, financial and agricultural $ 2,602 $ 150 $ 20 $ 2,772 $ 940,815 $ 943,587 $ — $ 3,442 $ 947,029 Real estate—commercial real estate and construction: Commercial real estate 3,473 266 — 3,739 2,008,568 2,012,307 206 27,928 2,040,441 Construction — — — — 232,338 232,338 — 257 232,595 Real estate—residential and home equity: Residential secured for business purpose 2,078 2,442 — 4,520 366,473 370,993 — 2,980 373,973 Residential secured for personal purpose 2,969 446 — 3,415 433,548 436,963 58 2,038 439,059 Home equity secured for personal purpose 605 297 — 902 172,106 173,008 — 1,427 174,435 Loans to individuals 157 73 74 304 29,579 29,883 — — 29,883 Lease financings 1,409 296 49 1,754 147,161 148,915 — 506 149,421 Total $ 13,293 $ 3,970 $ 143 $ 17,406 $ 4,330,588 $ 4,347,994 $ 264 $ 38,578 $ 4,386,836
Schedule of Nonperforming Loans and Leases	The following presents, by class of loans and leases, nonperforming loans and leases at December 31, 2020 and 2019. At December 31, 2020 2019 (Dollars in thousands) Nonaccrual Accruing Loans and Total Nonperforming Nonaccrual Accruing Loans and Total Nonperforming Commercial, financial and agricultural $ 2,827 $ — $ 50 $ 2,877 $ 3,442 $ — $ 20 $ 3,462 Real estate—commercial real estate and construction: Commercial real estate 22,739 — 945 23,684 27,928 — — 27,928 Construction — — — — 257 — — 257 Real estate—residential and home equity: Residential secured for business purpose 2,786 — — 2,786 2,980 — — 2,980 Residential secured for personal purpose 2,086 — — 2,086 2,038 — — 2,038 Home equity secured for personal purpose 1,047 53 — 1,100 1,427 54 — 1,481 Loans to individuals — — 185 185 — — 74 74 Lease financings 207 — 212 419 506 — 49 555 Total $ 31,692 $ 53 $ 1,392 $ 33,137 $ 38,578 $ 54 $ 143 $ 38,775 * Includes nonaccrual troubled debt restructured loans of $14.1 million and $13.8 million at December 31, 2020 and December 31, 2019, respectively.
Nonaccrual and Past Due 90 Days of More Loans and Leases at Amortized Cost	The following table presents the amortized cost basis of loans and leases on nonaccrual status and loans and leases 90 days or more past due and still accruing as of December 31, 2020. (Dollars in thousands) Nonaccrual With No ACL Nonaccrual With ACL Total Nonaccrual Loans 90 Days or more Past Due and Accruing Interest At December 31, 2020 Commercial, financial and agricultural $ 2,187 $ 640 $ 2,827 $ 50 Real estate-commercial 22,739 — 22,739 945 Real estate-residential secured for business purpose 2,663 123 2,786 — Real estate-residential secured for personal purpose 1,958 128 2,086 — Real estate-home equity secured for personal purpose 1,047 — 1,047 — Loans to individuals — — — 185 Lease financings — 207 207 212 Total $ 30,594 $ 1,098 $ 31,692 $ 1,392 For the year ended December 31, 2020, $4 thousand of interest income was recognized on nonaccrual loans and leases. The following table presents the amortized cost basis of collateral-dependent nonaccrual loans by class of loans and type of collateral as of December 31, 2020. (Dollars in thousands) Real Estate Other (1) None (2) Total At December 31, 2020 Commercial, financial and agricultural $ 1,351 $ 1,194 $ 282 $ 2,827 Real estate-commercial 22,739 — — 22,739 Real estate-residential secured for business purpose 2,786 — — 2,786 Real estate-residential secured for personal purpose 2,086 — — 2,086 Real estate-home equity secured for personal purpose 1,047 — — 1,047 Total $ 30,009 $ 1,194 $ 282 $ 31,485 (1) Collateral consists of business assets, including accounts receivable and personal property. (2) Loans fully reserved given lack of collateral.
Summary of Commercial Credit Quality Indicators	The Corporation categorizes risk based on relevant information about the ability of the borrower to service their debt. Loans with a relationship balance of less than $1 million are reviewed when necessary based on their performance, primarily when such loan are delinquent. Loans with relationships greater than $1 million are reviewed at least annually. Loan relationships with a higher risk profile or classified as special mention or substandard are reviewed at least quarterly. The Corporation reviews credit quality indicators on at least an annual basis and last completed this review in conjunction with the period ended December 31, 2020. The following is a description of the internal risk ratings and the likelihood of loss related to the credit quality of Commercial, financial and agricultural loans, Paycheck Protection Program loans, Real-estate commercial loans, Real-estate construction loans and Real estate-residential secured for a business purpose loans. 1. Pass—Loans considered satisfactory with no indications of deterioration 2. Special Mention—Potential weakness that deserves management's close attention 3. Substandard—Well-defined weakness or weaknesses that jeopardize the liquidation of the debt 4. Doubtful—Collection or liquidation in-full, on the basis of current existing facts, conditions and values, highly questionable and improbable Based on the most recent analysis performed, the following table presents the recorded investment in loans and leases held for investment for Commercial, financial and agricultural loans, Paycheck Protection Program loans, Real-estate commercial loans, Real-estate construction loans and Real estate-residential secured for a business purpose loans by credit quality indicator at December 31, 2020 under ASC 326. Term Loans Amortized Cost Basis by Origination Year (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total At December 31, 2020 Commercial, Financial and Agricultural Risk Rating 1. Pass $ 162,547 $ 93,967 $ 74,722 $ 38,906 $ 17,371 $ 56,053 $ 427,336 $ 870,902 2. Special Mention 2,723 783 316 500 777 1,144 8,318 14,561 3. Substandard — 430 362 28 — 627 5,755 7,202 Total $ 165,270 $ 95,180 $ 75,400 $ 39,434 $ 18,148 $ 57,824 $ 441,409 $ 892,665 Paycheck Protection Program Risk Rating 1. Pass $ 483,773 $ — $ — $ — $ — $ — $ — $ 483,773 2. Special Mention — — — — — — — — 3. Substandard — — — — — — — — Total $ 483,773 $ — $ — $ — $ — $ — $ — $ 483,773 Real Estate-Commercial Risk Rating 1. Pass $ 1,084,157 $ 481,997 $ 223,646 $ 268,236 $ 143,041 $ 157,503 $ 43,008 $ 2,401,588 2. Special Mention 6,220 10,076 3,498 — 1,250 5,870 1,247 28,161 3. Substandard 3,803 3,998 709 11,383 1,207 6,690 1,333 29,123 Total $ 1,094,180 $ 496,071 $ 227,853 $ 279,619 $ 145,498 $ 170,063 $ 45,588 $ 2,458,872 Real Estate-Construction Risk Rating 1. Pass $ 116,840 $ 59,507 $ 39,009 $ 113 $ 2,950 $ — $ 3,711 $ 222,130 2. Special Mention 21,225 — — — — — — 21,225 3. Substandard — — — — — — — — Total $ 138,065 $ 59,507 $ 39,009 $ 113 $ 2,950 $ — $ 3,711 $ 243,355 Real Estate-Residential Secured for Business Purpose Risk Rating 1. Pass $ 118,925 $ 72,149 $ 52,775 $ 43,347 $ 37,768 $ 25,170 $ 25,510 $ 375,644 2. Special Mention 1,354 — 188 77 175 130 — 1,924 3. Substandard 28 991 50 64 1,065 962 718 3,878 Total $ 120,307 $ 73,140 $ 53,013 $ 43,488 $ 39,008 $ 26,262 $ 26,228 $ 381,446 Totals By Risk Rating 1. Pass $ 1,966,242 $ 707,620 $ 390,152 $ 350,602 $ 201,130 $ 238,726 $ 499,565 $ 4,354,037 2. Special Mention 31,522 10,859 4,002 577 2,202 7,144 9,565 65,871 3. Substandard 3,831 5,419 1,121 11,475 2,272 8,279 7,806 40,203 Total $ 2,001,595 $ 723,898 $ 395,275 $ 362,654 $ 205,604 $ 254,149 $ 516,936 $ 4,460,111 The Corporation had no revolving loans which were converted to term loans included within recorded investment in loans and leases held for investment at December 31, 2020. The Corporation had no loans with a risk rating of Doubtful included within recorded investment in loans and leases held for investment at December 31, 2020. The following table presents by class, the recorded investment in loans and leases held for investment by credit quality indicator at December 31, 2019 under ASC 310. (Dollars in thousands) Commercial, Real Estate— Real Estate— Real Estate— Total At December 31, 2019 Grade: 1. Pass $ 911,848 $ 1,974,561 $ 201,424 $ 367,122 $ 3,454,955 2. Special Mention 18,843 24,199 20,987 3,769 67,798 3. Substandard 16,338 41,681 10,184 3,082 71,285 Total $ 947,029 $ 2,040,441 $ 232,595 $ 373,973 $ 3,594,038 The Corporation had no loans with a risk rating of Doubtful included in loans and leases held for investment at December 31, 2019.
Summary of Credit Exposure	The Corporation monitors the credit risk profile by payment activity for the following classifications of loans and leases: Real estate-residential secured for personal purpose loans, Real estate-home equity secured for personal purpose loans, Loans to individuals and Lease financings. The Corporation reviews credit quality indicators on at least an annual basis and last completed this review in conjunction with the period ended December 31, 2020. Loans and leases past due 90 days or more, loans and leases on nonaccrual status and troubled debt restructured loans and lease modifications are considered nonperforming. Nonperforming loans and leases are reviewed monthly. Performing loans and leases have a nominal to moderate risk of loss. Performing loans and leases are reviewed only if the loan becomes 60 days or more past due. Based on the most recent analysis performed, the following table presents the recorded investment in loans and leases held for investment for Real estate-residential secured for personal purpose loans, Real estate-home equity secured for personal purpose loans, Loans to individuals and Lease financings by credit quality indicator at December 31, 2020 under ASC 326. Term Loans Amortized Cost Basis by Origination Year (Dollars in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total At December 31, 2020 Real Estate-Residential Secured for Personal Purpose Payment Performance 1. Performing $ 191,987 $ 61,880 $ 56,314 $ 50,983 $ 38,975 $ 84,138 $ 1,237 $ 485,514 2. Nonperforming 666 — 56 — — 1,364 — 2,086 Total $ 192,653 $ 61,880 $ 56,370 $ 50,983 $ 38,975 $ 85,502 $ 1,237 $ 487,600 Real Estate-Home Equity Secured for Personal Purpose Payment Performance 1. Performing $ 1,195 $ 815 $ 829 $ 1,160 $ 518 $ 2,189 $ 158,803 $ 165,509 2. Nonperforming — — 198 — — 36 866 1,100 Total $ 1,195 $ 815 $ 1,027 $ 1,160 $ 518 $ 2,225 $ 159,669 $ 166,609 Loans to Individuals Payment Performance 1. Performing $ 1,795 $ 1,425 $ 970 $ 441 $ 220 $ 2,266 $ 20,180 $ 27,297 2. Nonperforming — — — — — 23 162 185 Total $ 1,795 $ 1,425 $ 970 $ 441 $ 220 $ 2,289 $ 20,342 $ 27,482 Lease Financings Payment Performance 1. Performing $ 72,173 $ 45,972 $ 30,679 $ 11,613 $ 3,616 $ 567 $ — $ 164,620 2. Nonperforming 12 182 5 205 7 8 — 419 Total $ 72,185 $ 46,154 $ 30,684 $ 11,818 $ 3,623 $ 575 $ — $ 165,039 Totals by Payment Performance 1. Performing $ 267,150 $ 110,092 $ 88,792 $ 64,197 $ 43,329 $ 89,160 $ 180,220 $ 842,940 2. Nonperforming 678 182 259 205 7 1,431 1,028 3,790 Total $ 267,828 $ 110,274 $ 89,051 $ 64,402 $ 43,336 $ 90,591 $ 181,248 $ 846,730 The Corporation had no revolving loans which were converted to term loans included within recorded investment in loans and leases held for investment at December 31, 2020. The following table presents by class, the recorded investment in loans and leases held for investment by performance status at December 31, 2019 under ASC 310. (Dollars in thousands) Real Estate— Real Estate— Loans to Lease Total At December 31, 2019 Performing $ 437,021 $ 172,954 $ 29,809 $ 148,866 $ 788,650 Nonperforming 2,038 1,481 74 555 4,148 Total $ 439,059 $ 174,435 $ 29,883 $ 149,421 $ 792,798
Summary of Activity in the Allowance for Credit Losses, Loans and Leases	The ACL on loans increased during the year ended December 31, 2020 primarily due changes in economic assumptions, which were inherently impacted by COVID-19, and loan growth. There were no changes to the reasonable and supportable forecast period, the reversion period, or any significant methodology changes during the year ended December 31, 2020. The following presents, by portfolio segment, a summary of the activity in the allowance for credit losses, loans and leases, for the years ended December 31, 2020, 2019 and 2018: (Dollars in thousands) Beginning balance, prior to adoption of ASU No. 2016-13 for CECL Adjustment to initially apply ASU No. 2016-13 for CECL Provision (recovery of provision) for credit losses Charge-offs Recoveries Ending balance For the Year Ended December 31, 2020 Allowance for credit losses, loans and leases: Commercial, Financial and Agricultural $ 8,759 $ 5,284 $ 680 $ (1,884) $ 745 $ 13,584 Real Estate-Commercial 15,750 6,208 33,090 (2,853) 35 52,230 Real Estate-Construction 2,446 29 823 — — 3,298 Real Estate-Residential Secured for Business Purpose 2,622 2,502 2,306 (188) 75 7,317 Real Estate-Residential Secured for Personal Purpose 2,713 (706) 1,229 (181) — 3,055 Real Estate-Home Equity Secured for Personal Purpose 1,076 (364) 449 — 15 1,176 Loans to Individuals 470 104 146 (267) 80 533 Lease Financings 1,311 (135) 750 (526) 301 1,701 Unallocated 184 — (34) N/A N/A 150 Total $ 35,331 $ 12,922 $ 39,439 $ (5,899) $ 1,251 $ 83,044 For the Year Ended December 31, 2019 Allowance for credit losses, loans and leases: Commercial, Financial and Agricultural $ 7,983 $ — $ 2,374 $ (1,965) $ 367 $ 8,759 Real Estate-Commercial and Construction 13,903 — 4,602 (402) 93 18,196 Real Estate-Residential Secured for Business Purpose 2,236 — 396 (122) 112 2,622 Real Estate-Residential and Home Equity Secured for Personal Purpose 3,199 — 781 (212) 21 3,789 Loans to Individuals 484 — 246 (335) 75 470 Lease Financings 1,288 — 206 (427) 244 1,311 Unallocated 271 — (87) N/A N/A 184 Total $ 29,364 $ — $ 8,518 $ (3,463) $ 912 $ 35,331 For the Year Ended December 31, 2018 Allowance for credit losses, loans and leases: Commercial, Financial and Agricultural $ 6,742 $ — $ 13,756 $ (14,655) $ 2,140 $ 7,983 Real Estate-Commercial and Construction 9,839 — 3,771 (40) 333 13,903 Real Estate-Residential Secured for Business Purpose 1,661 — 326 (31) 280 2,236 Real Estate-Residential and Home Equity Secured for Personal Purpose 1,754 — 1,367 — 78 3,199 Loans to Individuals 373 — 376 (353) 88 484 Lease Financings 1,132 — 497 (572) 231 1,288 Unallocated 54 — 217 N/A N/A 271 Total $ 21,555 $ — $ 20,310 $ (15,651) $ 3,150 $ 29,364 N/A – Not applicable Charge-offs for the year ended December 31, 2018 included a charge-off of $12.7 million during the second quarter of 2018 for a commercial loan relationship related to fraudulent activities by employees of the borrower. The Bank owned a participating interest which originally totaled $13.0 million in an approximately $80.0 million commercial lending facility. The charge-off represented the entire principal amount owed to the Bank. During the fourth quarter of 2018, the Bank recovered $1.8 million from this previously charged-off loan. The net charge-off for this loan for the year ended December 31, 2018 was $10.9 million.
Schedule of Allowance for Loan and Lease Credit Losses and Recorded Investment in Loans and Leases	The following presents, by portfolio segment, the balance in the ACL on loans and leases disaggregated on the basis of whether the loan or lease was measured for credit loss as a pooled loan or lease or if it was individually analyzed for a reserve at December 31, 2020 and 2019: Allowance for credit losses, loans and leases Loans and leases held for investment (Dollars in thousands) Ending balance: individually analyzed Ending balance: pooled Total ending balance Ending balance: individually analyzed Ending balance: pooled Loans measured at fair value Total ending balance At December 31, 2020 Commercial, Financial and Agricultural $ 535 $ 13,049 $ 13,584 $ 2,827 $ 889,838 $ — $ 892,665 Paycheck Protection Program — — — — 483,773 — 483,773 Real Estate-Commercial — 52,230 52,230 22,739 2,435,946 187 2,458,872 Real Estate-Construction — 3,298 3,298 — 243,355 — 243,355 Real Estate-Residential Secured for Business Purpose 24 7,293 7,317 2,786 378,660 — 381,446 Real Estate-Residential Secured for Personal Purpose 26 3,029 3,055 2,086 485,514 — 487,600 Real Estate-Home Equity Secured for Personal Purpose — 1,176 1,176 1,047 165,562 — 166,609 Loans to Individuals — 533 533 — 27,482 — 27,482 Lease Financings — 1,701 1,701 — 165,039 — 165,039 Unallocated N/A 150 150 N/A N/A N/A N/A Total $ 585 $ 82,459 $ 83,044 $ 31,485 $ 5,275,169 $ 187 $ 5,306,841 At December 31, 2019 Commercial, Financial and Agricultural $ 44 $ 8,715 $ 8,759 $ 3,442 $ 943,587 $ — $ 947,029 Real Estate-Commercial and Construction 1,562 16,634 18,196 28,185 2,244,534 317 2,273,036 Real Estate-Residential Secured for Business Purpose 306 2,316 2,622 2,980 370,993 — 373,973 Real Estate-Residential and Home Equity Secured for Personal Purpose 196 3,593 3,789 3,519 609,975 — 613,494 Loans to Individuals — 470 470 — 29,883 — 29,883 Lease Financings — 1,311 1,311 277 149,144 — 149,421 Unallocated N/A 184 184 N/A N/A N/A N/A Total $ 2,108 $ 33,223 $ 35,331 $ 38,403 $ 4,348,116 $ 317 $ 4,386,836 N/A – Not applicable
Schedule of Accruing and Nonaccruing Troubled Debt Restructured Loans	The following presents, by class of loans, information regarding accruing and nonaccrual loans that were restructured during the years ended December 31, 2020 and 2019: For the Years Ended December 31, 2020 2019 (Dollars in thousands) Number Pre- Post- Number Pre- Post- Accruing Troubled Debt Restructured Loans: Real estate—home equity secured for personal purpose — $ — $ — 1 $ 55 $ 55 Total — $ — $ — 1 $ 55 $ 55 Nonaccrual Troubled Debt Restructured Loans: Commercial, financial and agricultural 1 $ 619 $ 619 4 $ 1,475 $ 1,475 Real estate—commercial real estate — — — 2 12,414 12,414 Real estate—residential secured for personal purpose 1 544 544 — — — Total 2 $ 1,163 $ 1,163 6 $ 13,889 $ 13,889
Summary of Concessions Granted on Restructured Loans	The following presents, by class of loans, information regarding the types of concessions granted on accruing and nonaccrual loans that were restructured during the years ended December 31, 2020 and 2019 (excluding loans modified in accordance with Section 4013 of the CARES Act and the Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customer Affected by the Coronavirus ): Maturity Date Amortization Period Extension Incremental Extension of Credit Total Concessions (Dollars in thousands) No. of Amount No. of Amount No. of Amount No. of Amount For the Year Ended December 31, 2020 Accruing Troubled Debt Restructured Loans: Total — $ — — $ — — $ — — $ — Nonaccrual Troubled Debt Restructured Loans: Commercial, financial and agricultural — $ — 1 $ 619 — $ — 1 $ 619 Real estate—residential secured for personal purpose — — 1 544 — — 1 544 Total — $ — 2 $ 1,163 — $ — 2 $ 1,163 For the Year Ended December 31, 2019 Accruing Troubled Debt Restructured Loans: Real estate—home equity secured for personal purpose — $ — 1 $ 55 — $ — 1 $ 55 Total — $ — 1 $ 55 — $ — 1 $ 55 Nonaccrual Troubled Debt Restructured Loans: Commercial, financial and agricultural 1 $ 19 2 $ 956 1 $ 500 4 $ 1,475 Real estate—commercial real estate — — 1 1,313 1 11,101 2 12,414 Total 1 $ 19 3 $ 2,269 2 $ 11,601 6 $ 13,889
Schedule of Accruing and Nonaccrual Troubled Debt Restructured Loans with Payment Defaults	The following presents, by class of loans, information regarding accruing and nonaccrual troubled debt restructured loans, for which there were payment defaults within twelve months of the restructuring date: For the Years Ended December 31, 2020 2019 (Dollars in thousands) Number Recorded Number Recorded Accruing Troubled Debt Restructured Loans: Total — $ — — $ — Nonaccrual Troubled Debt Restructured Loans: Commercial, financial and agricultural — $ — 1 $ 17 Total — $ — 1 $ 17
Schedule of Mortgages in Process of Foreclosure	The following presents, by class of loans, information regarding consumer mortgages collateralized by residential real estate property that are in the process of foreclosure at December 31, 2020 and 2019: (Dollars in thousands) At December 31, 2020 At December 31, 2019 Real estate-residential secured for personal purpose $ 64 $ 714 Real estate-home equity secured for personal purpose — 1,058 Total $ 64 $ 1,772
Schedule of Foreclosed Residential Real Estate	The following presents foreclosed residential real estate property included in other real estate owned at December 31, 2020 and 2019. (Dollars in thousands) At December 31, 2020 At December 31, 2019 Foreclosed residential real estate $ — $ 71
Schedule of Maturities of Lease Financing Receivables	The following presents the maturity analysis of lease financing receivables: (Dollars in thousands) At December 31, 2020 At December 31, 2019 2020 N/A $ 57,515 2021 61,724 45,510 2022 49,970 32,233 2023 35,631 18,345 2024 20,821 6,639 2025 8,319 957 Thereafter 2,763 1,302 Total lease financing receivables 179,228 162,501 Plus: Unguaranteed residual 914 886 Plus: Initial direct costs 2,567 2,374 Less: Imputed interest (17,670) (16,340) Net investment in lease financing receivables $ 165,039 $ 149,421

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Components of Premises and Equipment	The following table reflects the components of premises and equipment: At December 31, (Dollars in thousands) 2020 2019 Land and land improvements $ 14,549 $ 14,292 Premises and improvements 55,703 54,158 Furniture and equipment 30,374 28,678 Total cost 100,626 97,128 Less: accumulated depreciation (44,990) (40,452) Net book value $ 55,636 $ 56,676

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Changes in Carrying Amount of Goodwill	Changes in the carrying amount of the Corporation's goodwill by business segment for the years ended December 31, 2020 and 2019 were as follows: (Dollars in thousands) Banking Wealth Management Insurance Consolidated Balance at December 31, 2018 $ 138,476 $ 15,434 $ 18,649 $ 172,559 Addition to goodwill from acquisitions — — — — Balance at December 31, 2019 138,476 15,434 18,649 172,559 Addition to goodwill from acquisitions — — — — Balance at December 31, 2020 $ 138,476 $ 15,434 $ 18,649 $ 172,559
Components of Intangible Assets	The following table reflects the components of intangible assets at the dates indicated: At December 31, 2020 At December 31, 2019 (Dollars in thousands) Gross Carrying Amount Accumulated Amortization (1) Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortized intangible assets: Core deposit intangibles $ 6,788 $ 4,787 $ 2,001 $ 6,788 $ 4,026 $ 2,762 Customer related intangibles 7,604 7,147 457 8,819 7,923 896 Servicing rights 22,354 15,946 6,408 19,160 12,534 6,626 Total amortized intangible assets $ 36,746 $ 27,880 $ 8,866 $ 34,767 $ 24,483 $ 10,284
Estimated Aggregate Amortization Expense	The estimated aggregate amortization expense for core deposit and customer-related intangibles for each of the five succeeding fiscal years and thereafter follows: (Dollars in thousands) Year Amount 2021 $ 923 2022 666 2023 409 2024 267 2025 144 Thereafter 49 Total $ 2,458
Changes in Servicing Rights	Changes in the servicing rights balance are summarized as follows: For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Beginning of period $ 6,626 $ 6,768 $ 6,573 Servicing rights capitalized 3,194 1,787 1,458 Amortization of servicing rights (3,325) (1,929) (1,263) Changes in valuation allowance (87) — — End of period $ 6,408 $ 6,626 $ 6,768 Loans serviced for others $ 1,200,742 $ 1,080,905 $ 1,031,506
Activity In Valuation Allowance For Mortgage Servicing Rights Table	Changes in the valuation allowance for mortgage servicing rights are summarized as follows: For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Valuation allowance, beginning of period $ — $ — $ — Additions (87) — — Valuation allowance, end of period $ (87) $ — $ —
Estimated Amortization Expense of Servicing Rights	The estimated amortization expense of servicing rights for each of the five succeeding fiscal years and thereafter is as follows: (Dollars in thousand) Year Amount 2021 $ 1,675 2022 1,250 2023 931 2024 693 2025 427 Thereafter 1,432 Total $ 6,408

Accrued Interest Receivable a_2

Accrued Interest Receivable and Other Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Text Block [Abstract]
Details of Accrued Interest Receivable and Other Assets	The following table provides the details of accrued interest receivable and other assets: At December 31, (Dollars in thousands) 2020 2019 Other real estate owned $ 7,355 $ 516 Accrued interest receivable 16,475 14,100 Accrued income and other receivables 7,340 6,973 Fair market value of derivative financial instruments 2,894 399 Other prepaid expenses 11,470 13,936 Net deferred tax assets 16,514 3,615 Other 3,291 680 Total accrued interest and other assets $ 65,339 $ 40,219

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2020
Banking and Thrift, Other Disclosures [Abstract]
Schedule of Components of Weighted Average Interest Rate and Balance of Deposits	Deposits and their respective weighted average interest rate at December 31, 2020 and 2019 consisted of the following: December 31, 2020 2019 Weighted Average Interest Rate Amount Weighted Average Interest Rate Amount (Dollars in thousands) Noninterest-bearing deposits — % $ 1,690,663 — % $ 1,279,681 Demand deposits 0.22 2,070,183 0.96 1,677,682 Savings deposits 0.08 918,094 0.37 796,702 Time deposits 1.30 563,775 1.95 606,010 Total 0.24 % $ 5,242,715 0.71 % $ 4,360,075
Schedule of Maturities of Time Deposits	At December 31, 2020, the scheduled maturities of time deposits are as follows: (Dollars in thousands) Year Amount Due in 2021 $ 12,178 Due in 2022 304,928 Due in 2023 93,332 Due in 2024 115,886 Due in 2025 24,000 Thereafter 13,451 Total $ 563,775

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Summary of Borrowings by Type	The following is a summary of borrowings by type. Short-term borrowings consist of overnight borrowings and term borrowings with an original maturity of one year or less. Balance at End of Year Weighted Average Interest Rate Maximum Amount Outstanding at Month End During the Year Average Amount Outstanding During the Year Weighted Average Interest Rate During the Year (Dollars in thousands) 2020 Short-term borrowings: FHLB borrowings $ — — % $ — $ 5,048 1.68 % Federal funds purchased — — 40,000 1,388 1.64 Customer repurchase agreements 17,906 0.05 % 39,615 20,747 0.05 Other short-term borrowings — — 192,936 59,475 0.35 Long-term debt: FHLB advances $ 110,000 1.42 % $ 200,000 $ 181,722 1.54 % Subordinated notes $ 183,515 4.96 % $ 193,481 $ 134,949 5.01 % 2019 Short-term borrowings: FHLB borrowings $ — — % $ 190,740 $ 23,485 2.57 % Federal funds purchased — — 8,500 15,217 2.63 Customer repurchase agreements 18,680 0.05 22,995 18,180 0.05 Long-term debt: FHLB advances $ 140,000 2.04 % $ 150,000 $ 139,397 2.00 % Security repurchase agreements 10,098 2.07 20,308 16,969 2.61 Subordinated notes $ 94,818 5.32 % $ 94,818 $ 94,695 5.33 %
Schedule of Maturities of Long-term FHLB Advances	Long-term advances with the FHLB of Pittsburgh mature as follows: (Dollars in thousands) As of December 31, 2020 Weighted Average Rate 2021 $ 15,000 1.93 % 2022 — — 2023 35,000 1.94 2024 60,000 0.98 2025 — — Thereafter — — Total $ 110,000 1.42 %

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Provision for Federal and State Income Taxes	The provision for federal and state income taxes included in the accompanying consolidated statement of income consists of the following: For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Current: Federal $ 18,498 $ 15,043 $ 9,770 State 1,337 1,098 972 Deferred: Federal (9,288) (1,068) (862) State (566) (739) 263 $ 9,981 $ 14,334 $ 10,143
Income Tax Provision Differences from Expected Statutory Provision	The provision for income taxes differs from the expected statutory provision as follows: For the Years Ended December 31, 2020 2019 2018 Expected provision at statutory rate 21.0 % 21.0 % 21.0 % Difference resulting from: Tax exempt interest income, net of disallowance (3.8) (3.2) (4.0) Increase in value of bank owned life insurance assets (1.1) (0.8) (1.1) Stock-based compensation 0.2 — (0.2) State income taxes, net of federal benefits 1.1 0.4 1.6 Adjustment to deferred tax assets and liabilities for enacted changes in tax laws and rates — — (0.5) Changes in valuation allowance 0.2 0.2 0.1 Other (0.1) 0.3 (0.2) Effective tax rate 17.5 % 17.9 % 16.7 %
Components of Deferred Tax Assets and Liabilities	The assets and liabilities giving rise to the Corporation's deferred tax assets and liabilities are as follows: At December 31, (Dollars in thousands) 2020 2019 Deferred tax assets: Allowance for credit losses, loans and leases $ 18,113 $ 7,680 Deferred compensation 1,625 1,834 Actuarial adjustments on retirement benefits* 5,408 4,868 State net operating losses 5,621 5,071 Other-than-temporary impairments on equity securities 151 151 Net unrealized holding losses on securities available-for-sale and swaps* 483 915 Lease liability 8,227 8,177 Deferred loan fees and costs 583 — Other deferred tax assets 2,148 1,146 Gross deferred tax assets 42,359 29,842 Valuation allowance (4,766) (4,284) Total deferred tax assets, net of valuation allowance 37,593 25,558 Deferred tax liabilities: Mortgage servicing rights 1,370 1,404 Retirement plans 5,309 5,299 Deferred loan fees and costs — 1,330 Acquisition-related fair value adjustments 1,236 1,515 Intangible assets 2,580 1,956 Accounting method change adjustment 385 768 Depreciation 888 1,137 Right of use asset 7,491 7,481 Other deferred tax liabilities 1,820 1,053 Total deferred tax liabilities 21,079 21,943 Net deferred tax assets $ 16,514 $ 3,615 * Represents the amount of deferred taxes recorded in accumulated other comprehensive income.

Retirement Plans and Other Po_2

Retirement Plans and Other Postretirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2020
Retirement Benefits [Abstract]
Summary of Retirement Plans and Other Postretirement Benefits	Information with respect to the Retirement Plans and Other Postretirement Benefits follows: Retirement Plans Other Postretirement Benefits (Dollars in thousands) 2020 2019 2020 2019 Change in benefit obligation: Benefit obligation at beginning of year $ 53,685 $ 46,868 $ 3,069 $ 2,283 Service cost 477 436 109 67 Interest cost 1,692 1,905 96 94 Actuarial loss 6,423 7,104 377 731 Benefits paid (2,846) (2,628) (111) (106) Benefit obligation at end of year $ 59,431 $ 53,685 $ 3,540 $ 3,069 Change in plan assets: Fair value of plan assets at beginning of year $ 51,607 $ 45,379 $ — $ — Actual return on plan assets 6,306 8,696 — — Benefits paid (2,846) (2,628) (111) (106) Corrective payment 140 — — — Employer contribution and non-qualified benefit payments 159 160 111 106 Fair value of plan assets at end of year $ 55,366 $ 51,607 $ — $ — Funded status (4,065) (2,078) (3,540) (3,069) Unrecognized net actuarial loss 24,526 22,433 989 638 Net amount recognized $ 20,461 $ 20,355 $ (2,551) $ (2,431)
Information for Pension Plans with Accumulated Benefit Obligation in Excess of Plan Assets	Information for the pension plan with an accumulated benefit obligation in excess of the fair value of plan assets at December 31, 2020 is shown below. Information for December 31, 2019 is shown for comparative purposes. At December 31, (Dollars in thousands) 2020 2019 Projected benefit obligation $ 57,116 $ 51,443 Accumulated benefit obligation 55,642 48,629 Fair value of plan assets 55,366 51,607
Components of Net Periodic Benefit Cost (Income)	Components of net periodic benefit cost were as follows: Retirement Plans Other Postretirement Benefits (Dollars in thousands) 2020 2019 2018 2020 2019 2018 Service cost $ 477 $ 436 $ 560 $ 109 $ 67 $ 88 Interest cost 1,692 1,905 1,760 96 94 92 Expected loss on plan assets (3,291) (3,061) (3,287) — — — Amortization of net actuarial loss 1,176 1,176 1,120 26 — 4 Accretion of prior service cost — (181) (283) — — — Net periodic benefit cost (income) $ 54 $ 275 $ (130) $ 231 $ 161 $ 184
Expected Amortization Expense	(Dollars in thousands) Retirement Plans Other Postretirement Benefits Expected amortization expense for 2021: Amortization of net actuarial loss $ 1,270 $ 46 Accretion of prior service cost — —
Summary of Benefit Payments Expected to be Paid	The following benefits payments, which reflect expected future service, as appropriate, are expected to be paid: (Dollars in thousands) Retirement Plans Other Postretirement Benefits For the fiscal year ending: 2021 $ 2,956 $ 94 2022 2,985 96 2023 3,049 102 2024 3,063 107 2025 3,050 109 Years 2026-2030 15,336 703 Total $ 30,439 $ 1,211
Weighted-Average Assumptions Used to Determine Benefit Obligations	Weighted-average assumptions used to determine benefit obligations at December 31, 2020 and 2019 were as follows: Retirement Plans Other Postretirement Benefits 2020 2019 2020 2019 Assumed discount rate 2.4 % 3.2 % 2.4 % 3.2 % Assumed salary increase rate 3%-6% 3% - 6% — — The benefit obligation for all plans at December 31, 2020 was based on the Pri-2012 White Collar Dataset Mortality Table with scale MP-2020 fully generational published by the Society of Actuaries. The discount rate is based on matching the Plan's projected cash flows to the spot rates in FTSE Pension Above Median Double-A Curve as of the disclosure date. The assumed salary increase considers available service years from the valuation date through the participant's normal retirement date. Weighted-average assumptions used to determine net periodic costs for the years ended December 31, 2020 and 2019 were as follows: Retirement Plans Other Postretirement Benefits 2020 2019 2020 2019 Assumed discount rate 3.2 % 4.2 % 3.2 % 4.2 % Assumed long-term rate of investment return 6.5 % 7.0 % — — Assumed salary increase rate 3%-6% 3% - 6% — —
Summary of Corporation's Pension Plan Asset Allocation	The Corporation's pension plan asset allocation at December 31, 2020 and 2019, by asset category was as follows: Percentage of Plan Assets at December 31, 2020 2019 Asset Category: Equity securities 60 % 61 % Debt securities 37 38 Other 3 1 Total 100 % 100 %
Major Categories of Assets in Corporation's Pension Plan	The major categories of assets in the Corporation's pension plan at year-end are presented in the following table. Assets are segregated by the level of the valuation inputs within the fair value hierarchy described in Note 18, "Fair Value Disclosures." Fair Value Measurements at December 31, (Dollars in thousands) 2020 2019 Level 1: Mutual funds $ 37,602 $ 34,332 Short-term investments 1,984 1,068 Level 2: U.S. government obligations 5,721 6,167 Corporate bonds 6,204 6,540 Certificates of deposit 3,855 3,500 Level 3: Total fair value of plan assets $ 55,366 $ 51,607

Stock-Based Incentive Plan (Tab

Stock-Based Incentive Plan (Tables)	12 Months Ended
	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Status of Options Granted Under Long-Term Incentive Plan	The following is a summary of the Corporation's stock option activity and related information for the year ended December 31, 2020: (Dollars in thousands, except per share data) Shares Under Option Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Life (Years) Aggregate Intrinsic Value at December 31, 2020 Outstanding at December 31, 2019 508,111 $ 24.83 Expired (2,000) 28.33 Forfeited (30,826) 26.10 Exercised (21,500) 17.84 Outstanding at December 31, 2020 453,785 25.06 5.8 $ 268 Exercisable at December 31, 2020 404,014 24.63 5.6 268
Summary of Nonvested Stock Options	The following is a summary of nonvested stock options at December 31, 2020 including changes during the year: (Dollars in thousands, except per share data) Nonvested Stock Options Weighted Average Grant Date Fair Value Nonvested stock options at December 31, 2019 163,261 $ 6.54 Vested (106,131) 6.58 Forfeited (7,359) 6.48 Nonvested stock options at December 31, 2020 49,771 6.46
Aggregated Assumptions Used to Estimate Fair Value of Options Granted	The following aggregated assumptions were used to estimate the fair value of options granted for the periods indicated. The Corporation did not issue stock options during the years ended December 31, 2020 and 2019. For the Year Ended December 31, 2018 Expected option life in years 6.6 Risk free interest rate 2.80 % Expected dividend yield 2.81 % Expected volatility 27.15 % Fair value of options $6.46
Summary of Nonvested Restricted Stock Awards and Units	In the following tables, issued restricted stock units have been combined with restricted stock awards, as the determination of the value at the grant date and methodology for recording stock-based compensation expense is the same for restricted stock units and restricted stock awards. The following is a summary of nonvested restricted stock awards and nonvested restricted stock units at December 31, 2020 including changes during the year: (Dollars in thousands, except per share data) Nonvested Stock Awards and Units Weighted Average Grant Date Fair Value Nonvested share awards at December 31, 2019 209,378 $ 26.76 Granted (1) 262,844 19.00 Vested (59,855) 27.17 Cancelled (2) (106,663) 23.39 Nonvested share awards and units at December 31, 2020 305,704 21.18 (1) Includes the impact of modifications of 83,764 awards at a weighted average fair value of $19.80. (2) Includes the impact of modifications of 83,764 awards at a weighted average fair value of $22.67.
Certain Information Regarding Restricted Stock Awards and Units	Certain information regarding restricted stock awards and units is summarized below for the periods indicated: For the Years Ended December 31, (Dollars in thousands, except per share data) 2020 2019 2018 Restricted stock awards and units granted 262,844 114,729 59,953 Weighted average grant date fair value $ 19.00 $ 25.65 $ 28.39 Intrinsic value of awards granted $ 4,994 $ 3,072 $ 1,293 Restricted stock awards and units vested 59,855 44,807 97,201 Weighted average grant date fair value $ 27.17 $ 21.65 $ 20.13 Intrinsic value of awards vested $ 1,375 $ 1,119 $ 2,709
Schedule of Unrecognized Compensation Cost, Nonvested Awards	The total unrecognized compensation expense and the weighted average period over which unrecognized compensation expense is expected to be recognized related to nonvested stock options and nonvested restricted stock awards and units at December 31, 2020 is presented below: (Dollars in thousands) Unrecognized Compensation Cost Weighted-Average Period Remaining (Years) Stock options $ 62 0.2 Restricted stock awards and units 4,072 1.7 $ 4,134 1.7
Compensation Expense Related to Stock Incentive Plans Recognized	The following table presents information related to the Corporation's compensation expense related to stock incentive plans recognized for the periods indicated: For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Stock-based compensation expense: Stock options $ 338 $ 716 $ 1,020 Restricted stock awards and units 1,142 1,632 1,537 Employee stock purchase plan 88 74 68 Total $ 1,568 $ 2,422 $ 2,625 Tax benefit on nonqualified stock option expense, restricted stock awards and disqualifying dispositions of incentive stock options $ 278 $ 518 $ 620

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Components of Accumulated Other Comprehensive (Loss) Income, Net of Taxes	The following table shows the components of accumulated other comprehensive (loss) income, net of taxes, for the periods presented: (Dollars in thousands) Net Unrealized Net Change Net Change Accumulated Balance, December 31, 2017 $ (4,061) $ 9 $ (13,719) $ (17,771) Adjustment to initially apply ASU No. 2016-01 for equity securities measured at fair value (433) — — (433) Adjustment to initially apply ASU No. 2018-02 for reclassification of stranded net tax charges (968) 2 (2,955) (3,921) Other comprehensive (loss) income (5,759) 70 (602) (6,291) Balance, December 31, 2018 (11,221) 81 (17,276) (28,416) Adjustment to initially apply ASU No. 2017-12 for derivatives — 83 — 83 Other comprehensive income (loss) 7,990 (349) (1,038) 6,603 Balance, December 31, 2019 (3,231) (185) (18,314) (21,730) Adjustment to initially apply ASU No. 2016-13 for CECL (1) 237 — — 237 Other comprehensive income (loss) 1,615 (236) (2,030) (651) Balance, December 31, 2020 $ (1,379) $ (421) $ (20,344) $ (22,144) (1) See Note 1, "Summary of Significant Accounting Policies - Accounting Pronouncements Adopted in 2020" for additional information.

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Schedule of Operating Lease Information	The following table provides information with respect to the Corporation's operating leases: For the Years Ended December 31, (Dollars in thousands) 2020 2019 Operating lease cost $ 3,862 $ 3,789 Short-term lease cost 12 — Variable lease cost 5 2 Total lease cost $ 3,879 $ 3,791 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from leases 3,693 3,536 At December 31, 2020 At December 31, 2019 Weighted-average remaining lease term in years 13.9 14.8 Weighted-average discount rate 4.14 % 4.24 %
Schedule of Maturity of Lease Liabilities	At December 31, 2020, maturities of lease liabilities are as follows: (Dollars in thousands) Year Amount 2021 $ 3,866 2022 3,871 2023 3,821 2024 3,691 2025 3,597 Thereafter 31,843 Total lease payments 50,689 Less: imputed interest (12,999) Present value of lease liabilities $ 37,690

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Off-balance Sheet Financial Instruments	The following schedule summarizes the Corporation's off-balance sheet financial instruments at December 31, 2020: (Dollars in thousands) Contract/Notional Amount Financial instruments representing credit risk: Commitments to extend credit $ 1,443,141 Performance letters of credit 34,215 Financial standby letters of credit 35,998 Other letters of credit 337
Summary of Future Minimum Contractual Payments With Third-Party Providers	At December 31, 2020, the Corporation had contracts with third-party providers to manage the Corporation's network operations, data processing and other related services. The projected amount of the Corporation's future minimum payments due for contracts with original or remaining terms greater than one year is as follows: (Dollars in thousands) Year Amount 2021 $ 7,831 2022 4,327 2023 519 2024 252 2025 45 Thereafter 5 Total $ 12,979

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional Amounts and Fair Value of Derivatives Designated as Hedging Instruments	The following table presents the notional amounts and fair values of derivatives designated as hedging instruments recorded on the consolidated balance sheets at December 31, 2020 and 2019. The Corporation pledges cash or securities to cover the negative fair value of derivative instruments. Cash collateral associated with derivative instruments are not added to or netted against the fair value amounts. Derivative Assets Derivative Liabilities (Dollars in thousands) Notional Balance Sheet Fair Balance Sheet Fair At December 31, 2020 Interest rate swap - cash flow hedge $ 15,465 $ — Other liabilities $ 533 Total $ 15,465 $ — $ 533 At December 31, 2019 Interest rate swap - cash flow hedge $ 16,286 $ — Other liabilities $ 235 Total $ 16,286 $ — $ 235
Notional Amounts and Fair Values of Derivatives Not Designated as Hedging Instruments	The following table presents the notional amounts and fair values of derivatives not designated as hedging instruments recorded on the consolidated balance sheets at December 31, 2020 and 2019: Derivative Assets Derivative Liabilities (Dollars in thousands) Notional Balance Sheet Fair Balance Sheet Fair At December 31, 2020 Interest rate swap $ 179 $ — Other liabilities $ 8 Credit derivatives 643,556 — Other liabilities 535 Interest rate locks with customers 77,246 Other assets 2,894 — Forward loan sale commitments 112,690 — Other liabilities 752 Total $ 833,671 $ 2,894 $ 1,295 At December 31, 2019 Interest rate swap $ 303 $ — Other liabilities $ 14 Credit derivatives 270,147 — Other liabilities 176 Interest rate locks with customers 19,966 Other assets 399 — Forward loan sale commitments 21,846 — Other liabilities 19 Total $ 312,262 $ 399 $ 209
Income for Derivatives Designated as Hedging Instruments	The following table presents amounts included in the consolidated statements of income for derivatives designated as hedging instruments for the periods indicated: Statement of Income Classification For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Interest rate swap—cash flow hedge—net interest payments Interest expense $ 254 $ (22) $ 15 Interest rate swap—fair value hedge—effectiveness Interest income — (5) — Interest rate swap—cash flow hedge—ineffectiveness Other noninterest income — — 83 Interest rate swap—fair value hedge—ineffectiveness Other noninterest income — — 3 Total net (loss) gain $ (254) $ 17 $ 71
Income for Derivatives Not Designated as Hedging Instruments	The following table presents amounts included in the consolidated statements of income for derivatives not designated as hedging instruments for the periods indicated: Statement of Income Classification For the Years Ended December 31, (Dollars in thousands) 2020 2019 2018 Credit derivatives Other noninterest income $ 5,733 $ 1,350 $ 262 Interest rate locks with customers Net gain (loss) on mortgage banking activities 2,495 (91) (37) Forward loan sale commitments Net (loss) gain on mortgage banking activities (733) 131 (211) Total net gain $ 7,495 $ 1,390 $ 14
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The following table presents amounts included in accumulated other comprehensive (loss) income for derivatives designated as hedging instruments at December 31, 2020 and 2019: Accumulated Other At December 31, (Dollars in thousands) 2020 2019 Interest rate swap—cash flow hedge Fair value, net of taxes $ (421) $ (185) Total $ (421) $ (185)

Fair Value Disclosures (Tables)

Fair Value Disclosures (Tables)	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table presents the assets and liabilities measured at fair value on a recurring basis at December 31, 2020 and 2019, classified using the fair value hierarchy: At December 31, 2020 (Dollars in thousands) Level 1 Level 2 Level 3 Assets/ Assets: Available-for-sale securities: State and political subdivisions $ — $ 13,537 $ — $ 13,537 Residential mortgage-backed securities — 114,163 — 114,163 Collateralized mortgage obligations — 5,321 — 5,321 Corporate bonds — 76,019 9,600 85,619 Total available-for-sale securities — 209,040 9,600 218,640 Equity securities: Equity securities - financial services industry 818 — — 818 Money market mutual funds 2,461 — — 2,461 Total equity securities 3,279 — — 3,279 Loans* — — 187 187 Loans held for sale — 37,039 — 37,039 Interest rate locks with customers* — 2,894 — 2,894 Total assets $ 3,279 $ 248,973 $ 9,787 $ 262,039 Liabilities: Contingent consideration liability $ — $ — $ 55 $ 55 Interest rate swaps* — 541 — 541 Credit derivatives* — — 535 535 Forward loan sale commitments* — 752 — 752 Total liabilities $ — $ 1,293 $ 590 $ 1,883 *Such financial instruments are recorded at fair value as further described in Note 17, "Derivative Instruments and Hedging Activities." The $9.6 million of Corporate bonds is comprised of one investment grade bond and the Corporation utilizes a third party to estimate the value. The value is derived from a discounted cash flow analysis which utilizes a probability of default input . The $535 thousand of credit derivatives liability represents the Credit Valuation Adjustment (CVA), which is obtained from real-time financial market data, of ninety-four interest rate swaps with a current notional amount of $643.6 million. The December 31, 2020 CVA assumes a zero-deal recovery percentage based on the most recent index credit curve. At December 31, 2020, the Corporation recorded a $400 thousand unrealized loss within other comprehensive income for recurring Level 3 fair value measurements held at December 31, 2020. At December 31, 2019 (Dollars in thousands) Level 1 Level 2 Level 3 Assets/ Assets: Available-for-sale securities: U.S. government corporations and agencies $ — $ 300 $ — $ 300 State and political subdivisions — 34,595 — 34,595 Residential mortgage-backed securities — 118,460 — 118,460 Collateralized mortgage obligations — 2,361 — 2,361 Corporate bonds — 91,208 — 91,208 Total available-for-sale securities — 246,924 — 246,924 Equity securities: Equity securities - financial services industry 1,004 — — 1,004 Money market mutual funds 1,619 — — 1,619 Total equity securities 2,623 — — 2,623 Loans* — — 317 317 Interest rate locks with customers* — 399 — 399 Total assets $ 2,623 $ 247,323 $ 317 $ 250,263 Liabilities: Contingent consideration liability $ — $ — $ 160 $ 160 Interest rate swaps* — 249 — 249 Credit derivatives* — — 176 176 Forward loan sale commitments* — 19 — 19 Total liabilities $ — $ 268 $ 336 $ 604 *Such financial instruments are recorded at fair value as further described in Note 17, "Derivative Instruments and Hedging Activities."
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following table includes a rollforward of corporate bonds, loans and credit derivatives for which the Corporation utilized Level 3 inputs to determine fair value on a recurring basis for the years ended December 31, 2020 and 2019. For the Year Ended December 31, 2020 (Dollars in thousands) Balance at Additions Payments received (Decrease) Increase in value Transfer from Level 3 Transfer into Level 3 Balance at December 31, 2020 Corporate bonds $ — $ — $ — $ (400) $ — $ 10,000 $ 9,600 Loans 317 — (123) (7) — — 187 Credit derivatives (176) (6,092) — 5,733 — — (535) Net total $ 141 $ (6,092) $ (123) $ 5,326 $ — $ 10,000 $ 9,252 For the Year Ended December 31, 2019 (Dollars in thousands) Balance at Additions Payments received Increase (decrease) in value Transfer from Level 3 Transfer into Level 3 Balance at December 31, 2019 Corporate bonds $ 25,729 $ — $ — $ 675 $ (26,404) — $ — Loans 1,779 — (1,461) (1) — — 317 Credit derivatives (72) (1,454) — 1,350 — — (176) Net total $ 27,436 $ (1,454) $ (1,461) $ 2,024 $ (26,404) $ — $ 141
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation	The following table includes a rollforward of corporate bonds, loans and credit derivatives for which the Corporation utilized Level 3 inputs to determine fair value on a recurring basis for the years ended December 31, 2020 and 2019. For the Year Ended December 31, 2020 (Dollars in thousands) Balance at Additions Payments received (Decrease) Increase in value Transfer from Level 3 Transfer into Level 3 Balance at December 31, 2020 Corporate bonds $ — $ — $ — $ (400) $ — $ 10,000 $ 9,600 Loans 317 — (123) (7) — — 187 Credit derivatives (176) (6,092) — 5,733 — — (535) Net total $ 141 $ (6,092) $ (123) $ 5,326 $ — $ 10,000 $ 9,252 For the Year Ended December 31, 2019 (Dollars in thousands) Balance at Additions Payments received Increase (decrease) in value Transfer from Level 3 Transfer into Level 3 Balance at December 31, 2019 Corporate bonds $ 25,729 $ — $ — $ 675 $ (26,404) — $ — Loans 1,779 — (1,461) (1) — — 317 Credit derivatives (72) (1,454) — 1,350 — — (176) Net total $ 27,436 $ (1,454) $ (1,461) $ 2,024 $ (26,404) $ — $ 141
Contingent Consideration Liability Change in Amount	The following table presents the change in the balance of the contingent consideration liability related to acquisitions for which the Corporation utilized Level 3 inputs to determine fair value on a recurring basis for the years ended December 31, 2020 and 2019: For the Year Ended December 31, 2020 (Dollars in thousands) Balance at Contingent Payment of Adjustment Balance at December 31, 2020 Girard Partners $ 160 $ — $ 121 $ 16 $ 55 Total contingent consideration liability $ 160 $ — $ 121 $ 16 $ 55 For the Year Ended December 31, 2019 (Dollars in thousands) Balance at Contingent Payment of Adjustment Balance at December 31, 2019 Girard Partners $ 259 $ — $ 129 $ 30 $ 160 Total contingent consideration liability $ 259 $ — $ 129 $ 30 $ 160
Assets Measured at Fair Value on Non-Recurring Basis	The Corporation may be required to periodically measure certain assets and liabilities at fair value on a non-recurring basis in accordance with GAAP. These adjustments to fair value usually result from the application of lower of cost or market accounting or changes in the value of loans held for investment analyzed on an individual basis. The following table represents assets measured at fair value on a non-recurring basis at December 31, 2020 and 2019: At December 31, 2020 (Dollars in thousands) Level 1 Level 2 Level 3 Assets at Individually analyzed loans held for investment $ — $ — $ 30,900 $ 30,900 Other real estate owned — — 7,355 7,355 Total $ — $ — $ 38,255 $ 38,255 At December 31, 2019 (Dollars in thousands) Level 1 Level 2 Level 3 Assets at Impaired loans held for investment $ — $ — $ 36,018 $ 36,018 Impaired leases held for investment — — 277 277 Other real estate owned — — 516 516 Total $ — $ — $ 36,811 $ 36,811
Assets, Liabilities and Off-Balance Sheet Items Not Measured at Fair Value	The following table presents assets and liabilities not measured at fair value on a recurring or non-recurring basis in the Corporation's consolidated balance sheet but for which the fair value is required to be disclosed at December 31, 2020 and 2019. The disclosed fair values are classified using the fair value hierarchy. At December 31, 2020 (Dollars in thousands) Level 1 Level 2 Level 3 Fair Carrying Assets: Cash and short-term interest-earning assets $ 219,858 $ — $ — $ 219,858 $ 219,858 Held-to-maturity securities — 156,325 — 156,325 151,257 Federal Home Loan Bank, Federal Reserve Bank and other stock N/A N/A N/A N/A 28,183 Net loans and leases held for investment — — 5,338,782 5,338,782 5,192,710 Servicing rights — — 6,783 6,783 6,408 Total assets $ 219,858 $ 156,325 $ 5,345,565 $ 5,721,748 $ 5,598,416 Liabilities: Deposits: Demand and savings deposits, non-maturity $ 4,678,940 $ — $ — $ 4,678,940 $ 4,678,940 Time deposits — 574,018 — 574,018 563,775 Total deposits 4,678,940 574,018 — 5,252,958 5,242,715 Short-term borrowings — 17,906 — 17,906 17,906 Long-term debt — 112,968 — 112,968 110,000 Subordinated notes — 190,045 — 190,045 183,515 Total liabilities $ 4,678,940 $ 894,937 $ — $ 5,573,877 $ 5,554,136 At December 31, 2019 (Dollars in thousands) Level 1 Level 2 Level 3 Fair Carrying Assets: Cash and short-term interest-earning assets $ 125,128 $ — $ — $ 125,128 $ 125,128 Held-to-maturity securities — 194,886 — 194,886 192,052 Federal Home Loan Bank, Federal Reserve Bank and other stock N/A N/A N/A N/A 28,254 Loans held for sale — 5,560 — 5,560 5,504 Net loans and leases held for investment — — 4,309,208 4,309,208 4,314,893 Servicing rights — — 9,340 9,340 6,626 Total assets $ 125,128 $ 200,446 $ 4,318,548 $ 4,644,122 $ 4,672,457 Liabilities: Deposits: Demand and savings deposits, non-maturity $ 3,754,065 $ — $ — $ 3,754,065 $ 3,754,065 Time deposits — 609,387 — 609,387 606,010 Total deposits 3,754,065 609,387 — 4,363,452 4,360,075 Short-term borrowings — 18,680 — 18,680 18,680 Long-term debt — 151,343 — 151,343 150,098 Subordinated notes — 96,663 — 96,663 94,818 Total liabilities $ 3,754,065 $ 876,073 $ — $ 4,630,138 $ 4,623,671

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2020
Banking and Thrift, Other Disclosures [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The Corporation's and Bank's actual and required capital ratios as of December 31, 2020 and December 31, 2019 under regulatory capital rules were as follows. Actual For Capital Adequacy To Be Well-Capitalized (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio At December 31, 2020 Total Capital (to Risk-Weighted Assets): Corporation $ 801,368 15.31 % $ 418,811 8.00 % $ 523,513 10.00 % Bank 632,183 12.12 417,416 8.00 521,769 10.00 Tier 1 Capital (to Risk-Weighted Assets): Corporation 563,491 10.76 314,108 6.00 418,811 8.00 Bank 569,821 10.92 313,062 6.00 417,416 8.00 Tier 1 Common Capital (to Risk-Weighted Assets): Corporation 563,491 10.76 235,581 4.50 340,284 6.50 Bank 569,821 10.92 234,796 4.50 339,150 6.50 Tier 1 Capital (to Average Assets): Corporation 563,491 9.08 248,224 4.00 310,280 5.00 Bank 569,821 9.21 247,494 4.00 309,368 5.00 At December 31, 2019 Total Capital (to Risk-Weighted Assets): Corporation $ 655,010 13.78 % $ 380,276 8.00 % $ 475,344 10.00 % Bank 552,142 11.66 378,724 8.00 473,405 10.00 Tier 1 Capital (to Risk-Weighted Assets): Corporation 524,137 11.03 285,207 6.00 380,276 8.00 Bank 516,087 10.90 284,043 6.00 378,724 8.00 Tier 1 Common Capital (to Risk-Weighted Assets): Corporation 524,137 11.03 213,905 4.50 308,974 6.50 Bank 516,087 10.90 213,032 4.50 307,713 6.50 Tier 1 Capital (to Average Assets): Corporation 524,137 10.02 209,330 4.00 261,663 5.00 Bank 516,087 9.90 208,589 4.00 260,737 5.00

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Summary of Activity for Loans to Related Parties	The following table provides a summary of activity for loans to Related Parties during the year ended December 31, 2020: (Dollars in thousands) Balance at January 1, 2020 $ 3,123 Additions 25 Amounts collected and other reductions (1,633) Balance at December 31, 2020 $ 1,515
Summary of Transactions with Related Parties	The following table provides additional information regarding transactions with Related Parties: (Dollars in thousands) At December 31, 2020 Commitments to extend credit $ 4,114 Deposits received 25,118

Segment Reporting Segment Repor

Segment Reporting Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Schedule of Segment Reporting	The following tables provide reportable segment-specific information and reconciliations to consolidated financial information for the years ended December 31, 2020, 2019 and 2018. (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated For the Year Ended December 31, 2020 Interest income $ 203,904 $ 8 $ — $ 33 $ 203,945 Interest expense 22,822 — — 6,762 29,584 Net interest income (expense) 181,082 8 — (6,729) 174,361 Provision for credit losses 40,794 — — — 40,794 Noninterest income 37,910 23,814 16,682 (78) 78,328 Noninterest expense 126,131 15,720 12,142 1,005 154,998 Intersegment (revenue) expense* (1,103) 627 476 — — Income (expense) before income taxes 53,170 7,475 4,064 (7,812) 56,897 Income tax expense (benefit) 9,153 1,525 858 (1,555) 9,981 Net income (loss) $ 44,017 $ 5,950 $ 3,206 $ (6,257) $ 46,916 Total assets $ 6,234,336 $ 48,646 $ 35,906 $ 17,608 $ 6,336,496 Net capital expenditures $ 3,646 $ 24 $ 46 $ 33 $ 3,749 For the Year Ended December 31, 2019 Interest income $ 214,020 $ 41 $ — $ 32 $ 214,093 Interest expense 39,818 — — 5,043 44,861 Net interest income (expense) 174,202 41 — (5,011) 169,232 Provision for credit losses 8,511 — — — 8,511 Noninterest income 23,748 23,946 17,318 410 65,422 Noninterest expense 116,283 15,799 12,477 1,531 146,090 Intersegment (revenue) expense* (1,204) 688 516 — — Income (expense) before income taxes 74,360 7,500 4,325 (6,132) 80,053 Income tax expense (benefit) 13,859 1,392 443 (1,360) 14,334 Net income (loss) $ 60,501 $ 6,108 $ 3,882 $ (4,772) $ 65,719 Total assets $ 5,282,505 $ 44,591 $ 34,291 $ 19,537 $ 5,380,924 Net capital expenditures $ 1,886 $ 84 $ 104 $ 372 $ 2,446 For the Year Ended December 31, 2018 Interest income $ 190,425 $ 32 $ — $ 31 $ 190,488 Interest expense 27,383 — — 5,043 32,426 Net interest income (expense) 163,042 32 — (5,012) 158,062 Provision for credit losses 20,310 — — — 20,310 Noninterest income 20,815 23,179 16,442 (263) 60,173 Noninterest expense 108,657 15,398 12,893 291 137,239 Intersegment (revenue) expense* (1,113) 612 501 — — Income (expense) before income taxes 56,003 7,201 3,048 (5,566) 60,686 Income tax expense (benefit) 9,085 1,913 752 (1,607) 10,143 Net income (loss) $ 46,918 $ 5,288 $ 2,296 $ (3,959) $ 50,543 Net capital expenditures $ 3,091 $ 45 $ 30 $ 201 $ 3,367 *Includes an allocation of general and administrative expenses from both the parent holding company and the Bank. These expenses are generally allocated based upon number of employees and square footage utilized.

Revenue From Contracts with C_2

Revenue From Contracts with Customers (Tables)	12 Months Ended
	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Reconciliation of Revenue from Segments to Consolidated	The following tables disaggregate the Corporation's revenue by major source and reportable segment for the years ended December 31, 2020, 2019 and 2018. (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated For the Year Ended December 31, 2020 Net interest income (1) $ 181,082 $ 8 $ — $ (6,729) $ 174,361 Noninterest income: Trust fee income — 7,703 — — 7,703 Service charges on deposit accounts 4,845 — — — 4,845 Investment advisory commission and fee income — 15,944 — — 15,944 Insurance commission and fee income — — 16,087 — 16,087 Other service fee income (2) 6,781 167 595 — 7,543 Bank owned life insurance income (1) 2,831 — — 109 2,940 Net gain on sales of investment securities (1) 871 — — — 871 Net gain on mortgage banking activities (1) 16,442 — — — 16,442 Other income (loss) (2) 6,140 — — (187) 5,953 Total noninterest income $ 37,910 $ 23,814 $ 16,682 $ (78) $ 78,328 (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated For the Year Ended December 31, 2019 Net interest income (1) $ 174,202 $ 41 $ — $ (5,011) $ 169,232 Noninterest income: Trust fee income — 7,826 — — 7,826 Service charges on deposit accounts 5,946 — — — 5,946 Investment advisory commission and fee income — 15,940 — — 15,940 Insurance commission and fee income — — 16,571 — 16,571 Other service fee income (2) 8,414 180 747 — 9,341 Bank owned life insurance income (1) 2,849 — — 330 3,179 Net gain on sales of investment securities (1) 54 — — — 54 Net gain on mortgage banking activities (1) 3,946 — — — 3,946 Other income (2) 2,539 — — 80 2,619 Total noninterest income $ 23,748 $ 23,946 $ 17,318 $ 410 $ 65,422 (Dollars in thousands) Banking Wealth Management Insurance Other Consolidated For the Year Ended December 31, 2018 Net interest income (1) $ 163,042 $ 32 $ — $ (5,012) $ 158,062 Noninterest income: Trust fee income — 7,882 — — 7,882 Service charges on deposit accounts 5,632 — — — 5,632 Investment advisory commission and fee income — 15,098 — — 15,098 Insurance commission and fee income — — 15,658 — 15,658 Other service fee income (2) 8,347 199 786 — 9,332 Bank owned life insurance income (1) 3,284 — — (110) 3,174 Net gain on sales of investment securities (1) 10 — — — 10 Net gain on mortgage banking activities (1) 3,125 — — — 3,125 Other income (loss) (2) 417 — (2) (153) 262 Total noninterest income $ 20,815 $ 23,179 $ 16,442 $ (263) $ 60,173

Condensed Financial Informati_2

Condensed Financial Information - Parent Company Only (Tables)	12 Months Ended
	Dec. 31, 2020
Condensed Financial Information Disclosure [Abstract]
Schedule of Condensed Balance Sheet	Condensed financial statements of the Corporation, parent company only, follow: (Dollars in thousands) At December 31, Balance Sheets 2020 2019 Assets: Cash $ 154,422 $ 82,673 Interest-earning deposits with other banks 211 177 Cash and cash equivalents 154,633 82,850 Investments in securities 818 1,004 Investments in subsidiaries, at equity in net assets: Bank 719,146 685,387 Non-banks — — Other assets 16,579 18,355 Total assets $ 891,176 $ 787,596 Liabilities: Dividends payable $ — $ 5,865 Subordinated notes 183,515 94,818 Other liabilities 15,189 11,791 Total liabilities 198,704 112,474 Shareholders' equity: 692,472 675,122 Total liabilities and shareholders' equity $ 891,176 $ 787,596
Schedule of Condensed Income Statement	(Dollars in thousands) For the Years Ended December 31, Statements of Income 2020 2019 2018 Dividends from Bank $ 9,746 $ 29,681 $ 22,359 Dividends from non-bank — — — Other income 21,803 23,943 26,631 Total operating income 31,549 53,624 48,990 Interest expense 6,762 5,043 5,043 Operating expenses 22,852 25,032 27,155 Income before income tax benefit and equity in undistributed income of subsidiaries 1,935 23,549 16,792 Income tax benefit (1,555) (1,360) (1,607) Income before equity in undistributed income of subsidiaries 3,490 24,909 18,399 Equity in undistributed income of subsidiaries: Bank 43,426 40,810 32,144 Non-banks — — — Net income $ 46,916 $ 65,719 $ 50,543
Schedule of Condensed Cash Flow Statement	(Dollars in thousands) For the Years Ended December 31, Statements of Cash Flows 2020 2019 2018 Cash flows from operating activities: Net income $ 46,916 $ 65,719 $ 50,543 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiaries (43,426) (40,810) (32,144) Bank owned life insurance (income) expense (108) (331) 109 Depreciation of premises and equipment 320 328 386 Stock based compensation 1,480 2,348 2,557 Contributions to pension and other postretirement benefit plans (270) (266) (3,264) Decrease in other assets 2,321 554 14,205 Decrease in other liabilities (4,631) (1,319) (865) Net cash provided by operating activities 2,602 26,223 31,527 Cash flow from investing activities: Other, net (32) (371) (188) Net cash used in investing activities (32) (371) (188) Cash flows from financing activities: Proceeds from issuance of subordinated notes 98,448 — — Repayment of subordinated debt (10,000) — — Purchases of treasury stock (4,452) (2,045) (5,984) Stock issued under dividend reinvestment and employee stock purchase plans 2,369 2,233 2,295 Proceeds from exercise of stock options 384 1,203 1,131 Cash dividends paid (17,536) (23,435) (23,495) Net cash provided by (used in) financing activities 69,213 (22,044) (26,053) Net increase in cash and due from financial institutions 71,783 3,808 5,286 Cash and cash equivalents at beginning of year 82,850 79,042 73,756 Cash and cash equivalents at end of period $ 154,633 $ 82,850 $ 79,042 Supplemental disclosures of cash flow information: Cash paid during the year for: Interest $ 5,121 $ 4,800 $ 4,800 Income tax, net of refunds received 16,172 16,460 643

Quarterly Financial Data (una_2

Quarterly Financial Data (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Data	The unaudited results of operations for the quarters for the years ended December 31, 2020 and 2019 were as follows: (Dollars and shares in thousands, except per share data) 2020 Quarterly Financial Data: Fourth Third Second First Interest income $ 51,334 $ 50,612 $ 49,980 $ 52,019 Interest expense 6,813 6,758 6,462 9,551 Net interest income 44,521 43,854 43,518 42,468 (Reversal of provision) provision for credit losses (8,721) 3,935 23,737 21,843 Net interest income after provision for credit losses 53,242 39,919 19,781 20,625 Noninterest income 20,139 21,805 18,000 18,384 Noninterest expense 41,734 38,527 35,960 38,777 Income before income taxes 31,647 23,197 1,821 232 Income tax expense (benefit) 5,773 5,078 (264) (606) Net income $ 25,874 $ 18,119 $ 2,085 $ 838 Per share data: Weighted average shares outstanding - basic earnings per share 29,237 29,189 29,149 29,218 Weighted average shares outstanding - diluted earnings per share 29,309 29,217 29,164 29,283 Basic earnings per share $ 0.88 $ 0.62 $ 0.07 $ 0.03 Diluted earnings per share $ 0.88 $ 0.62 $ 0.07 $ 0.03 Dividends declared per share $ — $ 0.20 $ 0.20 $ 0.20 (Dollars and shares in thousands, except per share data) 2019 Quarterly Financial Data: Fourth Third Second First Interest income $ 53,369 $ 54,300 $ 54,060 $ 52,364 Interest expense 10,940 11,655 11,425 10,841 Net interest income 42,429 42,645 42,635 41,523 Provision for credit losses 2,225 1,533 2,073 2,680 Net interest income after provision for credit losses 40,204 41,112 40,562 38,843 Noninterest income 16,170 16,599 16,356 16,297 Noninterest expense 37,480 36,267 36,781 35,562 Income before income taxes 18,894 21,444 20,137 19,578 Income tax expense 3,384 3,782 3,669 3,499 Net income $ 15,510 $ 17,662 $ 16,468 $ 16,079 Per share data: Weighted average shares outstanding - basic earnings per share 29,232 29,211 29,181 29,146 Weighted average shares outstanding - diluted earnings per share 29,313 29,285 29,243 29,205 Basic earnings per share $ 0.53 $ 0.60 $ 0.56 $ 0.55 Diluted earnings per share $ 0.53 $ 0.60 $ 0.56 $ 0.55 Dividends declared per share $ 0.20 $ 0.20 $ 0.20 $ 0.20

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020USD ($)communityOffice	Dec. 31, 2019USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of banking offices (in offices) | Office	40
Number of retirement communities with banking and trust services (in communities) | community	14
Accrued interest receivable	$ 15,300,000
Federal Reserve Bank stock	14,600,000	$ 14,600,000
FHLB Stock	13,500,000	13,500,000
Other-than-temporary impairment of equity securities	$ 0	$ 0
Number of days loan or lease past due for nonaccrual of interest status	90 days
Operating lease, options to extend	Most leases include one or more options to renew, with renewal terms generally containing one or more five-year renewal options.
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating lease, remaining lease term	4 months
Minimum [Member] | Customer Related [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangibles and other identified intangibles with finite useful lives	5 years
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating lease, remaining lease term	22 years
Period over which optioned shares become exercisable	10 years
Maximum [Member] | Core Deposits and Other Intangible Assets [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangibles and other identified intangibles with finite useful lives	15 years
Maximum [Member] | Customer Related [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangibles and other identified intangibles with finite useful lives	12 years
Building [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	40 years
Owned Building on Leased Land or Land Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, description	new buildings constructed on leased land or land improvements, the estimated useful life is the initial term including anticipated renewable terms, typically not exceeding twenty-five years
Furniture, Fixtures and Equipment [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	3 years
Furniture, Fixtures and Equipment [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	10 years
Restricted Stock [Member]
Summary Of Significant Accounting Policies [Line Items]
Period over which optioned shares become exercisable	3 years
Stock Options [Member]
Summary Of Significant Accounting Policies [Line Items]
Period over which optioned shares become exercisable	3 years
Held-to-maturity Securities [Member]
Summary Of Significant Accounting Policies [Line Items]
Accrued interest receivable	$ 441,000
Available-for-sale Securities [Member]
Summary Of Significant Accounting Policies [Line Items]
Accrued interest receivable	$ 477,000

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Impact of Adoption (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Summary Of Significant Accounting Policies [Line Items]
Securities, available-for-sale, allowance for credit loss	$ 869
Allowance for credit losses, loans and leases	83,044	$ 35,331	$ 35,331	$ 29,364	$ 21,555
Reserve for unfunded commitments		420
Cumulative Effect, Period of Adoption, Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		12,922
Reserve for unfunded commitments		1,145
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		48,253
Reserve for unfunded commitments		1,565
Commercial, Financial and Agricultural [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases	13,584	8,759	8,759	7,983	6,742
Commercial, Financial and Agricultural [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		5,284
Commercial, Financial and Agricultural [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		14,043
Real Estate-Commercial [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases	52,230	15,750	15,750
Real Estate-Commercial [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		6,208
Real Estate-Commercial [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		21,958
Real Estate-Construction [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases	3,298	2,446	2,446
Real Estate-Construction [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		29
Real Estate-Construction [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		2,475
Real Estate-Residential Secured for Business Purpose [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases	7,317	2,622	2,622	2,236	1,661
Real Estate-Residential Secured for Business Purpose [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		2,502
Real Estate-Residential Secured for Business Purpose [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		5,124
Real Estate-Residential Secured for Personal Purpose [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases	3,055	2,713	2,713
Real Estate-Residential Secured for Personal Purpose [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		(706)
Real Estate-Residential Secured for Personal Purpose [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		2,007
Real Estate-Home Equity Secured for Personal Purpose [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases	1,176	1,076	1,076
Real Estate-Home Equity Secured for Personal Purpose [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		(364)
Real Estate-Home Equity Secured for Personal Purpose [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		712
Loans to Individuals [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases	533	470	470	484	373
Loans to Individuals [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		104
Loans to Individuals [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		574
Lease Financings [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases	1,701	1,311	1,311	1,288	1,132
Lease Financings [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		(135)
Lease Financings [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		1,176
Unallocated [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases	150	184	184	$ 271	$ 54
Unallocated [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		0
Unallocated [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit losses, loans and leases		184
Corporate Bonds [Member]
Summary Of Significant Accounting Policies [Line Items]
Securities, available-for-sale, allowance for credit loss	$ 869	0	$ 0
Corporate Bonds [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Securities, available-for-sale, allowance for credit loss		300
Corporate Bonds [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Summary Of Significant Accounting Policies [Line Items]
Securities, available-for-sale, allowance for credit loss		$ 300

Earnings per Share - Basic and

Earnings per Share - Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share, Basic and Diluted [Abstract]
Net income	$ 25,874	$ 18,119	$ 2,085	$ 838	$ 15,510	$ 17,662	$ 16,468	$ 16,079	$ 46,916	$ 65,719	$ 50,543
Net income allocated to unvested restricted stock awards									(69)	(236)	(333)
Net income allocated to common shares									$ 46,847	$ 65,483	$ 50,210
Weighted average shares outstanding									29,244	29,300	29,370
Average unvested restricted stock awards									(46)	(107)	(193)
Denominator for basic earnings per share—weighted-average shares outstanding	29,237	29,189	29,149	29,218	29,232	29,211	29,181	29,146	29,198	29,193	29,177
Effect of dilutive securities—employee stock options and restricted stock units									70	68	82
Denominator for diluted earnings per share—adjusted weighted-average shares outstanding	29,309	29,217	29,164	29,283	29,313	29,285	29,243	29,205	29,268	29,261	29,259
Basic earnings per share	$ 0.88	$ 0.62	$ 0.07	$ 0.03	$ 0.53	$ 0.60	$ 0.56	$ 0.55	$ 1.60	$ 2.24	$ 1.72
Diluted earnings per share	$ 0.88	$ 0.62	$ 0.07	$ 0.03	$ 0.53	$ 0.60	$ 0.56	$ 0.55	$ 1.60	$ 2.24	$ 1.72
Average anti-dilutive options and restricted stock units excluded from computation of diluted earnings per share									491	325	319

Restrictions on Cash and Due _2

Restrictions on Cash and Due from Banks and Interest-earning Deposit Accounts - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Cash and Cash Equivalents [Abstract]
Reserve requirement at Federal Reserve Bank	$ 0	$ 11,100
Average balances at Federal Reserve Bank	270,700	138,400
Pledging requirement for credit derivatives and SWAP agreements - cash	$ 100	$ 0

Investment Securities - Additio

Investment Securities - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)Investment	Dec. 31, 2019USD ($)Investment	Dec. 31, 2018USD ($)	Jan. 01, 2020USD ($)
Debt Securities, Available-for-sale [Line Items]
Carrying value of securities pledged to secure public deposits and other contractual obligations	$ 249,600	$ 340,800
Pledging requirements for credit derivatives and SWAP agreements - securities	$ 32,600	$ 12,500
Number of investments in non-federal issuer representing more than 10% of shareholders' equity | Investment	0	0
Maximum investment in any single non-federal issuer representing shareholders' equity	10.00%	10.00%
Fair value of securities AFS in unrealized loss position for which an ACL has not been recorded	$ 18,253	$ 138,598
Unrealized losses included in fair value of securities AFS in unrealized loss position for which an ACL has not been recorded	78	5,505
Fair value AFS in unrealized loss with an ACL	58,700
Available-for-sale securities in unrealized loss position, accumulated loss	5,500
Securities, available-for-sale, allowance for credit loss	869
Proceeds from sales	66,421	26,494	$ 1,010
Equity Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Proceeds from sales	$ 0	0
Corporate Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Fair value of securities AFS in unrealized loss position for which an ACL has not been recorded		66,504
Unrealized losses included in fair value of securities AFS in unrealized loss position for which an ACL has not been recorded		5,007
Number of securities | Investment	7
Securities, available-for-sale, allowance for credit loss	$ 869	0		$ 0
Provision for credit loss, AFS securities	569
Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Fair value of securities AFS in unrealized loss position for which an ACL has not been recorded	13,708	70,499
Unrealized losses included in fair value of securities AFS in unrealized loss position for which an ACL has not been recorded	$ 63	475
Number of securities | Investment	4
Securities, available-for-sale, allowance for credit loss	$ 0
Other Noninterest Income [Member] | Equity Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Net realized gain/loss on equity securities	$ (186)	$ 80

Investment Securities - Held-to

Investment Securities - Held-to-Maturity and Available-for-Sale, Scheduled Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Investment securities held-to-maturity (fair value $156,325 and $194,886 at December 31, 2020 and 2019, respectively)	$ 151,257		$ 192,052
Securities held-to-maturity, gross unrealized gains	5,068		2,944
Securities held-to-maturity, gross unrealized losses	0		(110)
Securities, held-to-maturity, allowance for credit loss	0
Securities held-to-maturity, fair value	156,325		194,886
Debt Securities, Available-for-sale [Abstract]
Securities, available-for-sale, amortized cost	221,254		251,014
Securities, available-for-sale, accumulated gross unrealized gain, before tax	3,783		1,415
Securities, available-for-sale, gross unrealized losses	(5,528)		(5,505)
Securities, available-for-sale, allowance for credit loss	(869)
Securities, available-for-sale, fair value	218,640		246,924
U.S. Government Corporations and Agencies [Member]
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Securities held-to-maturity, amortized cost, after 1 year to 5 years	6,998		6,997
Securities held-to-maturity, gross unrealized gains, after 1 year to 5 years	171		66
Securities held-to-maturity, gross unrealized losses, after 1 year to 5 years	0		0
Securities held-to-maturity, allowance for credit loss, after 1 year to 5 years	0
Securities held-to-maturity, fair value, after 1 year to 5 years	7,169		7,063
Investment securities held-to-maturity (fair value $156,325 and $194,886 at December 31, 2020 and 2019, respectively)	6,998		6,997
Securities held-to-maturity, gross unrealized gains	171		66
Securities held-to-maturity, gross unrealized losses	0		0
Securities, held-to-maturity, allowance for credit loss	0
Securities held-to-maturity, fair value	7,169		7,063
Debt Securities, Available-for-sale [Abstract]
Securities, available-for-sale, amortized cost, within 1 year	0		301
Securities, available-for-sale, gross unrealized gains, within 1 year	0		0
Securities, available-for-sale, gross unrealized losses, within 1 year	0		(1)
Securities, available-for-sale, allowance for credit loss, within 1 year	0
Securities, available-for-sale, fair value, within 1 year	0		300
Securities, available-for-sale, amortized cost	0		301
Securities, available-for-sale, accumulated gross unrealized gain, before tax	0		0
Securities, available-for-sale, gross unrealized losses	0		(1)
Securities, available-for-sale, allowance for credit loss	0
Securities, available-for-sale, fair value	0		300
State and Political Subdivisions [Member]
Debt Securities, Available-for-sale [Abstract]
Securities, available-for-sale, amortized cost, after 1 year to 5 years	3,560		4,717
Securities, available-for-sale, gross unrealized gains, after 1 year to 5 years	33		23
Securities, available-for-sale, gross unrealized losses, after 1 year to 5 years	0		0
Securities, available-for-sale, allowance for credit loss, after 1 year to 5 years	0
Securities, available-for-sale, fair value, after 1 year to 5 years	3,593		4,740
Securities, available-for-sale, amortized cost, after 5 years to 10 years	9,881		29,563
Securities, available-for-sale, gross unrealized gains, after 5 years to 10 years	63		292
Securities, available-for-sale, gross unrealized losses, after 5 years to 10 years	0		0
Securities, available-for-sale, allowance for credit loss, after 5 years to 10 years	0
Securities, available-for-sale, fair value, after 5 years to 10 years	9,944		29,855
Securities, available-for-sale, amortized cost	13,441		34,280
Securities, available-for-sale, accumulated gross unrealized gain, before tax	96		315
Securities, available-for-sale, gross unrealized losses	0		0
Securities, available-for-sale, allowance for credit loss	0
Securities, available-for-sale, fair value	13,537		34,595
Residential Mortgage Backed Securities [Member]
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Securities held-to-maturity, amortized cost, after 5 years to 10 years	6,325		9,083
Securities held-to-maturity, gross unrealized gains, after 5 years to 10 years	253		129
Securities held-to-maturity, gross unrealized losses, after 5 years to 10 years	0		0
Securities held-to-maturity, allowance for credit loss, after 5 years to 10 years	0
Securities held-to-maturity, fair value, after 5 years to 10 years	6,578		9,212
Securities held-to-maturity, amortized cost, over 10 years	137,934		175,972
Securities held-to-maturity, gross unrealized gains, over 10 years	4,644		2,749
Securities held-to-maturity, gross unrealized losses, over 10 years	0		(110)
Securities, held-to-maturity, allowance for credit loss, over 10 years	0
Securities Held-to-Maturity, Fair Value, Over 10 years	142,578		178,611
Investment securities held-to-maturity (fair value $156,325 and $194,886 at December 31, 2020 and 2019, respectively)	144,259		185,055
Securities held-to-maturity, gross unrealized gains	4,897		2,878
Securities held-to-maturity, gross unrealized losses	0		(110)
Securities, held-to-maturity, allowance for credit loss	0
Securities held-to-maturity, fair value	149,156		187,823
Debt Securities, Available-for-sale [Abstract]
Securities, available-for-sale, amortized cost, within 1 year	0		304
Securities, available-for-sale, gross unrealized gains, within 1 year	0		9
Securities, available-for-sale, gross unrealized losses, within 1 year	0		0
Securities, available-for-sale, allowance for credit loss, within 1 year	0
Securities, available-for-sale, fair value, within 1 year	0		313
Securities, available-for-sale, amortized cost, after 1 year to 5 years	323		611
Securities, available-for-sale, gross unrealized gains, after 1 year to 5 years	10		3
Securities, available-for-sale, gross unrealized losses, after 1 year to 5 years	0		(1)
Securities, available-for-sale, allowance for credit loss, after 1 year to 5 years	0
Securities, available-for-sale, fair value, after 1 year to 5 years	333		613
Securities, available-for-sale, amortized cost, after 5 years to 10 years	1,664		36,893
Securities, available-for-sale, gross unrealized gains, after 5 years to 10 years	58		107
Securities, available-for-sale, gross unrealized losses, after 5 years to 10 years	0		(21)
Securities, available-for-sale, allowance for credit loss, after 5 years to 10 years	0
Securities, available-for-sale, fair value, after 5 years to 10 years	1,722		36,979
Securities, available-for-sale, amortized cost, over 10 years	110,018		80,630
Securities, available-for-sale, gross unrealized gains, over 10 years	2,153		378
Securities, available-for-sale, gross unrealized losses, over 10 years	(63)		(453)
Securities available-for-sale, allowance for credit loss, over 10 years	0
Securities, available-for-sale, fair value, over 10 years	112,108		80,555
Securities, available-for-sale, amortized cost	112,005		118,438
Securities, available-for-sale, accumulated gross unrealized gain, before tax	2,221		497
Securities, available-for-sale, gross unrealized losses	(63)		(475)
Securities, available-for-sale, allowance for credit loss	0
Securities, available-for-sale, fair value	114,163		118,460
Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-sale [Abstract]
Securities, available-for-sale, amortized cost, after 5 years to 10 years	754		2,377
Securities, available-for-sale, gross unrealized gains, after 5 years to 10 years	21		6
Securities, available-for-sale, gross unrealized losses, after 5 years to 10 years	0		(22)
Securities, available-for-sale, allowance for credit loss, after 5 years to 10 years	0
Securities, available-for-sale, fair value, after 5 years to 10 years	775		2,361
Securities, available-for-sale, amortized cost, over 10 years	4,561		0
Securities, available-for-sale, gross unrealized gains, over 10 years	0		0
Securities, available-for-sale, gross unrealized losses, over 10 years	(15)		0
Securities available-for-sale, allowance for credit loss, over 10 years	0
Securities, available-for-sale, fair value, over 10 years	4,546		0
Securities, available-for-sale, amortized cost	5,315		2,377
Securities, available-for-sale, accumulated gross unrealized gain, before tax	21		6
Securities, available-for-sale, gross unrealized losses	(15)		(22)
Securities, available-for-sale, allowance for credit loss	0
Securities, available-for-sale, fair value	5,321		2,361
Corporate Bonds [Member]
Debt Securities, Available-for-sale [Abstract]
Securities, available-for-sale, amortized cost, within 1 year	499		6,012
Securities, available-for-sale, gross unrealized gains, within 1 year	2		1
Securities, available-for-sale, gross unrealized losses, within 1 year	0		(4)
Securities, available-for-sale, allowance for credit loss, within 1 year	0
Securities, available-for-sale, fair value, within 1 year	501		6,009
Securities, available-for-sale, amortized cost, after 1 year to 5 years	29,498		29,606
Securities, available-for-sale, gross unrealized gains, after 1 year to 5 years	1,440		596
Securities, available-for-sale, gross unrealized losses, after 1 year to 5 years	0		(61)
Securities, available-for-sale, allowance for credit loss, after 1 year to 5 years	(16)
Securities, available-for-sale, fair value, after 1 year to 5 years	30,922		30,141
Securities, available-for-sale, amortized cost, after 5 years to 10 years	60,496		0
Securities, available-for-sale, gross unrealized gains, after 5 years to 10 years	3		0
Securities, available-for-sale, gross unrealized losses, after 5 years to 10 years	(5,450)		0
Securities, available-for-sale, allowance for credit loss, after 5 years to 10 years	(853)
Securities, available-for-sale, fair value, after 5 years to 10 years	54,196		0
Securities, available-for-sale, amortized cost, over 10 years	0		60,000
Securities, available-for-sale, gross unrealized gains, over 10 years	0		0
Securities, available-for-sale, gross unrealized losses, over 10 years	0		(4,942)
Securities available-for-sale, allowance for credit loss, over 10 years	0
Securities, available-for-sale, fair value, over 10 years	0		55,058
Securities, available-for-sale, amortized cost	90,493		95,618
Securities, available-for-sale, accumulated gross unrealized gain, before tax	1,445		597
Securities, available-for-sale, gross unrealized losses	(5,450)		(5,007)
Securities, available-for-sale, allowance for credit loss	(869)	$ 0	0
Securities, available-for-sale, fair value	$ 85,619		$ 91,208

Investment Securities - Informa

Investment Securities - Information Related to Sales of Securities Available-for-Sale (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Securities available-for-sale:
Proceeds from sales	$ 66,421	$ 26,494	$ 1,010
Gross realized gains on sales	885	78	10
Gross realized losses on sales	14	24	0
Tax expense related to net realized gains on sales	$ 183	$ 11	$ 2

Investment Securities - Amount

Investment Securities - Amount of Securities in Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than twelve months, fair value	$ 0	$ 26,767
Debt securities, held-to-maturity, continuous unrealized loss position, less than 12 months, accumulated loss	0	(110)
Twelve months or longer, fair value	0	0
Debt securities, held-to-maturity, continuous unrealized loss position, 12 months or longer, accumulated loss	0	0
Total, fair value	0	26,767
Debt securities, held-to-maturity, unrealized loss position, accumulated loss	0	(110)
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than twelve months, fair value	18,222	22,825
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss	(77)	(62)
Twelve months or longer, fair value	31	115,773
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss	(1)	(5,443)
Total, fair value	18,253	138,598
Available-for-sale securities, continuous unrealized loss position, accumulated loss	(78)	(5,505)
U.S. Government Corporations and Agencies [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than twelve months, fair value		0
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss		0
Twelve months or longer, fair value		300
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss		(1)
Total, fair value		300
Available-for-sale securities, continuous unrealized loss position, accumulated loss		(1)
Residential Mortgage-Backed Securities [Member]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than twelve months, fair value		26,767
Debt securities, held-to-maturity, continuous unrealized loss position, less than 12 months, accumulated loss		(110)
Twelve months or longer, fair value		0
Debt securities, held-to-maturity, continuous unrealized loss position, 12 months or longer, accumulated loss		0
Total, fair value		26,767
Debt securities, held-to-maturity, unrealized loss position, accumulated loss		(110)
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than twelve months, fair value	13,677	21,827
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss	(62)	(62)
Twelve months or longer, fair value	31	48,672
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss	(1)	(413)
Total, fair value	13,708	70,499
Available-for-sale securities, continuous unrealized loss position, accumulated loss	(63)	(475)
Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than twelve months, fair value	4,545	0
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss	(15)	0
Twelve months or longer, fair value	0	1,295
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss	0	(22)
Total, fair value	4,545	1,295
Available-for-sale securities, continuous unrealized loss position, accumulated loss	$ (15)	(22)
Corporate Bonds [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than twelve months, fair value		998
Available-for-sale securities, continuous unrealized loss position, less than 12 months, accumulated loss		0
Twelve months or longer, fair value		65,506
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, accumulated loss		(5,007)
Total, fair value		66,504
Available-for-sale securities, continuous unrealized loss position, accumulated loss		$ (5,007)

Investment Securities - Allowan

Investment Securities - Allowance for Credit Loss Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Jan. 01, 2020
Debt Securities, Available-for-sale [Line Items]
Adjustment to initially apply ASU No. 2016-13 for CECL	$ 869
Securities, available-for-sale, allowance for credit loss, ending balance	869
Corporate Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Securities, available-for-sale, allowance for credit loss, beginning balance	0
Adjustment to initially apply ASU No. 2016-13 for CECL	869	$ 0
Change in securities for which a previous expected credit loss was recognized	(569)
Securities, available-for-sale, allowance for credit loss, ending balance	$ 869
Corporate Bonds [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Debt Securities, Available-for-sale [Line Items]
Adjustment to initially apply ASU No. 2016-13 for CECL		$ 300

Loans and Leases - Additional I

Loans and Leases - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual interest income recognized			$ 4
Charge-offs			5,899	$ 3,463	$ 15,651
Loans and leases held for investment			5,306,841	4,386,836
Recoveries			1,251	912	3,150
Minimum [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Amount of loan relationship balance, loans reviewed annually			1,000
Maximum [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Amount of loan relationship balance, loans reviewed on a performance basis			1,000
Commercial, Financial and Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Charge-offs			1,884	1,965	14,655
Loans and leases held for investment			892,665	947,029
Recoveries			$ 745	$ 367	2,140
Loan Participations [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Charge-offs		$ 12,700
Loans and leases held for investment	$ 13,000				13,000
Total participating interest from all parties	80,000				80,000
Recoveries	$ 1,800
Allowance for loan and lease losses write-offs, net					$ 10,900

Loans and Leases - Summary of M

Loans and Leases - Summary of Major Loan and Lease Categories (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases held for investment	$ 5,306,841	$ 4,386,836
Loans and Leases Receivable, Allowance	(83,044)	(35,331)
Loans	5,223,797	4,351,505
Unearned Lease Income	(17,670)	(16,340)
Net deferred (fees) costs, included in the above table	(2,903)	5,999
Overdraft deposits included in the above table	948	407
Commercial, Financial and Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases held for investment	892,665	947,029
Paycheck Protection Program Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases held for investment	483,773	0
Real Estate-Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases held for investment	2,458,872	2,040,441
Real Estate-Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases held for investment	243,355	232,595
Real Estate-Residential Secured for Business Purpose [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases held for investment	381,446	373,973
Real Estate-Residential Secured for Personal Purpose [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases held for investment	487,600	439,059
Real Estate-Home Equity Secured for Personal Purpose [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases held for investment	166,609	174,435
Loans to Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases held for investment	27,482	29,883
Lease Financings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases held for investment	$ 165,039	$ 149,421

Loans and Leases - Age Analysis

Loans and Leases - Age Analysis of Past Due Loans and Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	$ 19,783	$ 17,406
Current	5,255,366	4,330,588
Accruing loans and leases	5,275,149	4,347,994
Nonaccrual loans and leases	31,692	38,578
Loans and leases held for investment	5,306,841	4,386,836
Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired credit impaired		264
Financial Asset, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	16,173	13,293
Financial Asset, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	2,218	3,970
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	1,392	143
Commercial, Financial and Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	1,433	2,772
Current	888,405	940,815
Accruing loans and leases	889,838	943,587
Nonaccrual loans and leases	2,827	3,442
Loans and leases held for investment	892,665	947,029
Commercial, Financial and Agricultural [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired credit impaired		0
Commercial, Financial and Agricultural [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	1,104	2,602
Commercial, Financial and Agricultural [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	279	150
Commercial, Financial and Agricultural [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	50	20
Paycheck Protection Program Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0
Current	483,773
Accruing loans and leases	483,773
Nonaccrual loans and leases	0
Loans and leases held for investment	483,773	0
Paycheck Protection Program Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0
Paycheck Protection Program Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0
Paycheck Protection Program Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0
Real Estate-Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	5,034	3,739
Current	2,431,099	2,008,568
Accruing loans and leases	2,436,133	2,012,307
Nonaccrual loans and leases	22,739	27,928
Loans and leases held for investment	2,458,872	2,040,441
Real Estate-Commercial [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired credit impaired		206
Real Estate-Commercial [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	3,230	3,473
Real Estate-Commercial [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	859	266
Real Estate-Commercial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	945	0
Real Estate-Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	361	0
Current	242,994	232,338
Accruing loans and leases	243,355	232,338
Nonaccrual loans and leases	0	257
Loans and leases held for investment	243,355	232,595
Real Estate-Construction [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired credit impaired		0
Real Estate-Construction [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	361	0
Real Estate-Construction [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Real Estate-Construction [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Real Estate-Residential Secured for Business Purpose [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	4,329	4,520
Current	374,331	366,473
Accruing loans and leases	378,660	370,993
Nonaccrual loans and leases	2,786	2,980
Loans and leases held for investment	381,446	373,973
Real Estate-Residential Secured for Business Purpose [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired credit impaired		0
Real Estate-Residential Secured for Business Purpose [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	3,726	2,078
Real Estate-Residential Secured for Business Purpose [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	603	2,442
Real Estate-Residential Secured for Business Purpose [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Real Estate-Residential Secured for Personal Purpose [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	6,137	3,415
Current	479,377	433,548
Accruing loans and leases	485,514	436,963
Nonaccrual loans and leases	2,086	2,038
Loans and leases held for investment	487,600	439,059
Real Estate-Residential Secured for Personal Purpose [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired credit impaired		58
Real Estate-Residential Secured for Personal Purpose [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	6,057	2,969
Real Estate-Residential Secured for Personal Purpose [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	80	446
Real Estate-Residential Secured for Personal Purpose [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Real Estate-Home Equity Secured for Personal Purpose [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	639	902
Current	164,923	172,106
Accruing loans and leases	165,562	173,008
Nonaccrual loans and leases	1,047	1,427
Loans and leases held for investment	166,609	174,435
Real Estate-Home Equity Secured for Personal Purpose [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired credit impaired		0
Real Estate-Home Equity Secured for Personal Purpose [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	607	605
Real Estate-Home Equity Secured for Personal Purpose [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	32	297
Real Estate-Home Equity Secured for Personal Purpose [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	0	0
Loans to Individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	449	304
Current	27,033	29,579
Accruing loans and leases	27,482	29,883
Nonaccrual loans and leases	0	0
Loans and leases held for investment	27,482	29,883
Loans to Individuals [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired credit impaired		0
Loans to Individuals [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	190	157
Loans to Individuals [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	74	73
Loans to Individuals [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	185	74
Lease Financings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	1,401	1,754
Current	163,431	147,161
Accruing loans and leases	164,832	148,915
Nonaccrual loans and leases	207	506
Loans and leases held for investment	165,039	149,421
Lease Financings [Member] | Valley Green Bank and Fox Chase Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Acquired credit impaired		0
Lease Financings [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	898	1,409
Lease Financings [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	291	296
Lease Financings [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due	$ 212	$ 49

Loans and Leases - Non-Performi

Loans and Leases - Non-Performing Loans and Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Non-Performing Loans and Leases [Line Items]
Nonaccrual loans and leases	$ 31,692	$ 38,578
Accruing troubled debt restructured loans and lease modifications	53	54
Loans and leases 90 days or more past due and accruing interest	1,392	143
Total Nonperforming Loans and Leases	33,137	38,775
Nonaccrual troubled debt restructured loans and lease modifications	14,100	13,800
Commercial, Financial and Agricultural [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual loans and leases	2,827	3,442
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and leases 90 days or more past due and accruing interest	50	20
Total Nonperforming Loans and Leases	2,877	3,462
Real Estate-Commercial [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual loans and leases	22,739	27,928
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and leases 90 days or more past due and accruing interest	945	0
Total Nonperforming Loans and Leases	23,684	27,928
Real Estate-Construction [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual loans and leases	0	257
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and leases 90 days or more past due and accruing interest	0	0
Total Nonperforming Loans and Leases	0	257
Real Estate-Residential Secured for Business Purpose [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual loans and leases	2,786	2,980
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and leases 90 days or more past due and accruing interest	0	0
Total Nonperforming Loans and Leases	2,786	2,980
Real Estate-Residential Secured for Personal Purpose [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual loans and leases	2,086	2,038
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and leases 90 days or more past due and accruing interest	0	0
Total Nonperforming Loans and Leases	2,086	2,038
Real Estate-Home Equity Secured for Personal Purpose [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual loans and leases	1,047	1,427
Accruing troubled debt restructured loans and lease modifications	53	54
Loans and leases 90 days or more past due and accruing interest	0	0
Total Nonperforming Loans and Leases	1,100	1,481
Loans to Individuals [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual loans and leases	0	0
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and leases 90 days or more past due and accruing interest	185	74
Total Nonperforming Loans and Leases	185	74
Lease Financings [Member]
Non-Performing Loans and Leases [Line Items]
Nonaccrual loans and leases	207	506
Accruing troubled debt restructured loans and lease modifications	0	0
Loans and leases 90 days or more past due and accruing interest	212	49
Total Nonperforming Loans and Leases	$ 419	$ 555

Loans and Leases - Nonaccrual (

Loans and Leases - Nonaccrual (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	$ 30,594
Nonaccrual With ACL	1,098
Nonaccrual loans and leases	31,692	$ 38,578
Loans and leases 90 days or more past due and accruing interest	1,392	143
Commercial, Financial and Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	2,187
Nonaccrual With ACL	640
Nonaccrual loans and leases	2,827	3,442
Loans and leases 90 days or more past due and accruing interest	50	20
Real Estate-Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	22,739
Nonaccrual With ACL	0
Nonaccrual loans and leases	22,739	27,928
Loans and leases 90 days or more past due and accruing interest	945	0
Real Estate-Residential Secured for Business Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	2,663
Nonaccrual With ACL	123
Nonaccrual loans and leases	2,786	2,980
Loans and leases 90 days or more past due and accruing interest	0	0
Real Estate-Residential Secured for Personal Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	1,958
Nonaccrual With ACL	128
Nonaccrual loans and leases	2,086	2,038
Loans and leases 90 days or more past due and accruing interest	0	0
Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	1,047
Nonaccrual With ACL	0
Nonaccrual loans and leases	1,047	1,427
Loans and leases 90 days or more past due and accruing interest	0	0
Loans to Individuals [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	0
Nonaccrual With ACL	0
Nonaccrual loans and leases	0	0
Loans and leases 90 days or more past due and accruing interest	185	74
Lease Financings [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual With No ACL	0
Nonaccrual With ACL	207
Nonaccrual loans and leases	207	506
Loans and leases 90 days or more past due and accruing interest	$ 212	$ 49

Loans and Leases - Collateral D

Loans and Leases - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	$ 31,692	$ 38,578
Nonaccrual loans (excluding leases)	31,485
Commercial, Financial and Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	2,827	3,442
Real Estate-Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	22,739	27,928
Real Estate-Residential Secured for Business Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	2,786	2,980
Real Estate-Residential Secured for Personal Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	2,086	2,038
Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	1,047	$ 1,427
Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	30,009
Real Estate [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	1,351
Real Estate [Member] | Real Estate-Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	22,739
Real Estate [Member] | Real Estate-Residential Secured for Business Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	2,786
Real Estate [Member] | Real Estate-Residential Secured for Personal Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	2,086
Real Estate [Member] | Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	1,047
Other [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	1,194
Other [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	1,194
Other [Member] | Real Estate-Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	0
Other [Member] | Real Estate-Residential Secured for Business Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	0
Other [Member] | Real Estate-Residential Secured for Personal Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	0
Other [Member] | Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	0
None [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	282
None [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	282
None [Member] | Real Estate-Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	0
None [Member] | Real Estate-Residential Secured for Business Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	0
None [Member] | Real Estate-Residential Secured for Personal Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	0
None [Member] | Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual loans	$ 0

Loans and Leases - Credit Quali

Loans and Leases - Credit Quality (Detail) $ in Thousands	Dec. 31, 2020USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 2,001,595
2019	723,898
2018	395,275
2017	362,654
2016	205,604
Prior	254,149
Revolving Loans Amortized Cost Basis	516,936
Total	4,460,111
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,966,242
2019	707,620
2018	390,152
2017	350,602
2016	201,130
Prior	238,726
Revolving Loans Amortized Cost Basis	499,565
Total	4,354,037
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2020	31,522
2019	10,859
2018	4,002
2017	577
2016	2,202
Prior	7,144
Revolving Loans Amortized Cost Basis	9,565
Total	65,871
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2020	3,831
2019	5,419
2018	1,121
2017	11,475
2016	2,272
Prior	8,279
Revolving Loans Amortized Cost Basis	7,806
Total	40,203
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2020	267,150
2019	110,092
2018	88,792
2017	64,197
2016	43,329
Prior	89,160
Revolving Loans Amortized Cost Basis	180,220
Total	842,940
Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2020	678
2019	182
2018	259
2017	205
2016	7
Prior	1,431
Revolving Loans Amortized Cost Basis	1,028
Total	3,790
Commercial, Financial and Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	165,270
2019	95,180
2018	75,400
2017	39,434
2016	18,148
Prior	57,824
Revolving Loans Amortized Cost Basis	441,409
Total	892,665
Commercial, Financial and Agricultural [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	162,547
2019	93,967
2018	74,722
2017	38,906
2016	17,371
Prior	56,053
Revolving Loans Amortized Cost Basis	427,336
Total	870,902
Commercial, Financial and Agricultural [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2020	2,723
2019	783
2018	316
2017	500
2016	777
Prior	1,144
Revolving Loans Amortized Cost Basis	8,318
Total	14,561
Commercial, Financial and Agricultural [Member] | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	430
2018	362
2017	28
2016	0
Prior	627
Revolving Loans Amortized Cost Basis	5,755
Total	7,202
Paycheck Protection Program Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	483,773
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Total	483,773
Paycheck Protection Program Loans [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	483,773
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Total	483,773
Paycheck Protection Program Loans [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Total	0
Paycheck Protection Program Loans [Member] | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Total	0
Real Estate-Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,094,180
2019	496,071
2018	227,853
2017	279,619
2016	145,498
Prior	170,063
Revolving Loans Amortized Cost Basis	45,588
Total	2,458,872
Real Estate-Commercial [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,084,157
2019	481,997
2018	223,646
2017	268,236
2016	143,041
Prior	157,503
Revolving Loans Amortized Cost Basis	43,008
Total	2,401,588
Real Estate-Commercial [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2020	6,220
2019	10,076
2018	3,498
2017	0
2016	1,250
Prior	5,870
Revolving Loans Amortized Cost Basis	1,247
Total	28,161
Real Estate-Commercial [Member] | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2020	3,803
2019	3,998
2018	709
2017	11,383
2016	1,207
Prior	6,690
Revolving Loans Amortized Cost Basis	1,333
Total	29,123
Real Estate-Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	138,065
2019	59,507
2018	39,009
2017	113
2016	2,950
Prior	0
Revolving Loans Amortized Cost Basis	3,711
Total	243,355
Real Estate-Construction [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	116,840
2019	59,507
2018	39,009
2017	113
2016	2,950
Prior	0
Revolving Loans Amortized Cost Basis	3,711
Total	222,130
Real Estate-Construction [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2020	21,225
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Total	21,225
Real Estate-Construction [Member] | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Total	0
Real Estate-Residential Secured for Business Purpose [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	120,307
2019	73,140
2018	53,013
2017	43,488
2016	39,008
Prior	26,262
Revolving Loans Amortized Cost Basis	26,228
Total	381,446
Real Estate-Residential Secured for Business Purpose [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	118,925
2019	72,149
2018	52,775
2017	43,347
2016	37,768
Prior	25,170
Revolving Loans Amortized Cost Basis	25,510
Total	375,644
Real Estate-Residential Secured for Business Purpose [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,354
2019	0
2018	188
2017	77
2016	175
Prior	130
Revolving Loans Amortized Cost Basis	0
Total	1,924
Real Estate-Residential Secured for Business Purpose [Member] | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2020	28
2019	991
2018	50
2017	64
2016	1,065
Prior	962
Revolving Loans Amortized Cost Basis	718
Total	3,878
Real Estate-Residential Secured for Personal Purpose [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	192,653
2019	61,880
2018	56,370
2017	50,983
2016	38,975
Prior	85,502
Revolving Loans Amortized Cost Basis	1,237
Total	487,600
Real Estate-Residential Secured for Personal Purpose [Member] | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2020	191,987
2019	61,880
2018	56,314
2017	50,983
2016	38,975
Prior	84,138
Revolving Loans Amortized Cost Basis	1,237
Total	485,514
Real Estate-Residential Secured for Personal Purpose [Member] | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2020	666
2019	0
2018	56
2017	0
2016	0
Prior	1,364
Revolving Loans Amortized Cost Basis	0
Total	2,086
Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,195
2019	815
2018	1,027
2017	1,160
2016	518
Prior	2,225
Revolving Loans Amortized Cost Basis	159,669
Total	166,609
Real Estate-Home Equity Secured for Personal Purpose [Member] | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,195
2019	815
2018	829
2017	1,160
2016	518
Prior	2,189
Revolving Loans Amortized Cost Basis	158,803
Total	165,509
Real Estate-Home Equity Secured for Personal Purpose [Member] | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	198
2017	0
2016	0
Prior	36
Revolving Loans Amortized Cost Basis	866
Total	1,100
Loans to Individuals [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,795
2019	1,425
2018	970
2017	441
2016	220
Prior	2,289
Revolving Loans Amortized Cost Basis	20,342
Total	27,482
Loans to Individuals [Member] | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,795
2019	1,425
2018	970
2017	441
2016	220
Prior	2,266
Revolving Loans Amortized Cost Basis	20,180
Total	27,297
Loans to Individuals [Member] | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	23
Revolving Loans Amortized Cost Basis	162
Total	185
Lease Financings [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	72,185
2019	46,154
2018	30,684
2017	11,818
2016	3,623
Prior	575
Revolving Loans Amortized Cost Basis	0
Total	165,039
Lease Financings [Member] | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2020	72,173
2019	45,972
2018	30,679
2017	11,613
2016	3,616
Prior	567
Revolving Loans Amortized Cost Basis	0
Total	164,620
Lease Financings [Member] | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2020	12
2019	182
2018	5
2017	205
2016	7
Prior	8
Revolving Loans Amortized Cost Basis	0
Total	419
Financing Receivable
Financing Receivable, Credit Quality Indicator [Line Items]
2020	267,828
2019	110,274
2018	89,051
2017	64,402
2016	43,336
Prior	90,591
Revolving Loans Amortized Cost Basis	181,248
Total	$ 846,730

Loans and Leases - Credit Qua_2

Loans and Leases - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment	$ 5,306,841	$ 4,386,836
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		3,454,955
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		67,798
Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		71,285
Internally Assigned Grades [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		3,594,038
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		788,650
Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		4,148
Performing and Nonperforming [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		792,798
Commercial, Financial and Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment	892,665	947,029
Commercial, Financial and Agricultural [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		911,848
Commercial, Financial and Agricultural [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		18,843
Commercial, Financial and Agricultural [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		16,338
Commercial, Financial and Agricultural [Member] | Internally Assigned Grades [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		947,029
Paycheck Protection Program Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment	483,773	0
Real Estate-Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment	2,458,872	2,040,441
Real Estate-Commercial [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		1,974,561
Real Estate-Commercial [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		24,199
Real Estate-Commercial [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		41,681
Real Estate-Commercial [Member] | Internally Assigned Grades [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		2,040,441
Real Estate-Construction [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment	243,355	232,595
Real Estate-Construction [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		201,424
Real Estate-Construction [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		20,987
Real Estate-Construction [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		10,184
Real Estate-Construction [Member] | Internally Assigned Grades [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		232,595
Real Estate-Residential Secured for Business Purpose [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment	381,446	373,973
Real Estate-Residential Secured for Business Purpose [Member] | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		367,122
Real Estate-Residential Secured for Business Purpose [Member] | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		3,769
Real Estate-Residential Secured for Business Purpose [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		3,082
Real Estate-Residential Secured for Business Purpose [Member] | Internally Assigned Grades [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		373,973
Real Estate-Residential Secured for Personal Purpose [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment	487,600	439,059
Real Estate-Residential Secured for Personal Purpose [Member] | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		437,021
Real Estate-Residential Secured for Personal Purpose [Member] | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		2,038
Real Estate-Residential Secured for Personal Purpose [Member] | Performing and Nonperforming [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		439,059
Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment	166,609	174,435
Real Estate-Home Equity Secured for Personal Purpose [Member] | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		172,954
Real Estate-Home Equity Secured for Personal Purpose [Member] | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		1,481
Real Estate-Home Equity Secured for Personal Purpose [Member] | Performing and Nonperforming [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		174,435
Loans to Individuals [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment	27,482	29,883
Loans to Individuals [Member] | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		29,809
Loans to Individuals [Member] | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		74
Loans to Individuals [Member] | Performing and Nonperforming [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		29,883
Lease Financings [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment	$ 165,039	149,421
Lease Financings [Member] | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		148,866
Lease Financings [Member] | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		555
Lease Financings [Member] | Performing and Nonperforming [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases held for investment		$ 149,421

Loans and Leases - Allowance fo

Loans and Leases - Allowance for Credit Losses, Loans and Leases Roll Forward (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2020
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				$ 35,331				$ 29,364	$ 35,331	$ 29,364	$ 21,555
Allowance for credit losses, loans and leases	$ 83,044			35,331	$ 35,331			29,364	35,331	29,364	29,364	$ 35,331
(Reversal of provision) provision for credit losses	(8,721)	$ 3,935	$ 23,737	21,843	2,225	$ 1,533	$ 2,073	2,680	39,439	8,518	20,310
Charge-offs									(5,899)	(3,463)	(15,651)
Recoveries									1,251	912	3,150
Ending balance	83,044				35,331				83,044	35,331	29,364
Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for credit losses, loans and leases												12,922
Commercial, Financial and Agricultural [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				8,759				7,983	8,759	7,983	6,742
Allowance for credit losses, loans and leases	13,584			8,759	8,759			7,983	13,584	7,983	7,983	8,759
(Reversal of provision) provision for credit losses									680	2,374	13,756
Charge-offs									(1,884)	(1,965)	(14,655)
Recoveries									745	367	2,140
Ending balance	13,584				8,759				13,584	8,759	7,983
Commercial, Financial and Agricultural [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for credit losses, loans and leases												5,284
Real Estate-Commercial [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				15,750					15,750
Allowance for credit losses, loans and leases	52,230			15,750	15,750				52,230	15,750		15,750
(Reversal of provision) provision for credit losses									33,090
Charge-offs									(2,853)
Recoveries									35
Ending balance	52,230				15,750				52,230	15,750
Real Estate-Commercial [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for credit losses, loans and leases												6,208
Real Estate-Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				2,446					2,446
Allowance for credit losses, loans and leases	3,298			2,446	2,446				3,298	2,446		2,446
(Reversal of provision) provision for credit losses									823
Charge-offs									0
Recoveries									0
Ending balance	3,298				2,446				3,298	2,446
Real Estate-Construction [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for credit losses, loans and leases												29
Real Estate-Commercial and Construction [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				18,196				13,903	18,196	13,903	9,839
Allowance for credit losses, loans and leases				18,196	18,196			13,903	18,196	18,196	9,839
(Reversal of provision) provision for credit losses										4,602	3,771
Charge-offs										(402)	(40)
Recoveries										93	333
Ending balance					18,196					18,196	13,903
Real Estate-Residential Secured for Business Purpose [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				2,622				2,236	2,622	2,236	1,661
Allowance for credit losses, loans and leases	7,317			2,622	2,622			2,236	2,622	2,622	1,661	2,622
(Reversal of provision) provision for credit losses									2,306	396	326
Charge-offs									(188)	(122)	(31)
Recoveries									75	112	280
Ending balance	7,317				2,622				7,317	2,622	2,236
Real Estate-Residential Secured for Business Purpose [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for credit losses, loans and leases												2,502
Real Estate-Residential Secured for Personal Purpose [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				2,713					2,713
Allowance for credit losses, loans and leases	3,055			2,713	2,713				3,055	2,713		2,713
(Reversal of provision) provision for credit losses									1,229
Charge-offs									(181)
Recoveries									0
Ending balance	3,055				2,713				3,055	2,713
Real Estate-Residential Secured for Personal Purpose [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for credit losses, loans and leases												(706)
Real Estate-Home Equity Secured for Personal Purpose [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				1,076					1,076
Allowance for credit losses, loans and leases	1,176			1,076	1,076				1,176	1,076		1,076
(Reversal of provision) provision for credit losses									449
Charge-offs									0
Recoveries									15
Ending balance	1,176				1,076				1,176	1,076
Real Estate-Home Equity Secured for Personal Purpose [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for credit losses, loans and leases												(364)
Real Estate-Residential and Home Equity Secured for Personal Purpose [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				3,789				3,199	3,789	3,199	1,754
Allowance for credit losses, loans and leases				3,789	3,789			3,199	3,789	3,789	3,199
(Reversal of provision) provision for credit losses										781	1,367
Charge-offs										(212)	0
Recoveries										21	78
Ending balance					3,789					3,789	3,199
Loans to Individuals [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				470				484	470	484	373
Allowance for credit losses, loans and leases	533			470	470			484	470	470	373	470
(Reversal of provision) provision for credit losses									146	246	376
Charge-offs									(267)	(335)	(353)
Recoveries									80	75	88
Ending balance	533				470				533	470	484
Loans to Individuals [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for credit losses, loans and leases												104
Lease Financings [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				1,311				1,288	1,311	1,288	1,132
Allowance for credit losses, loans and leases	1,701			1,311	1,311			1,288	1,311	1,311	1,132	1,311
(Reversal of provision) provision for credit losses									750	206	497
Charge-offs									(526)	(427)	(572)
Recoveries									301	244	231
Ending balance	1,701				1,311				1,701	1,311	1,288
Lease Financings [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for credit losses, loans and leases												(135)
Unallocated [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				184				271	184	271	54
Allowance for credit losses, loans and leases	150			$ 184	184			$ 271	150	271	271	184
(Reversal of provision) provision for credit losses									(34)	(87)	217
Ending balance	$ 150				$ 184				$ 150	$ 184	$ 271
Unallocated [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for credit losses, loans and leases												$ 0

Loans and Leases - Allowance _2

Loans and Leases - Allowance for Loan and Lease Losses and Recorded Investment in Loans and Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	$ 585		$ 2,108
Ending balance: pooled	82,459		33,223
Total: Allowance for Credit Loss	83,044	$ 35,331	35,331	$ 29,364	$ 21,555
Loans and Leases Held for Investment [Abstract]
Ending balance: individually analyzed	31,485		38,403
Ending balance: pooled	5,275,169		4,348,116
Loans measured at fair value	187		317
Total loans and leases held for investment	5,306,841		4,386,836
Commercial, Financial and Agricultural [Member]
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	535		44
Ending balance: pooled	13,049		8,715
Total: Allowance for Credit Loss	13,584	8,759	8,759	7,983	6,742
Loans and Leases Held for Investment [Abstract]
Ending balance: individually analyzed	2,827		3,442
Ending balance: pooled	889,838		943,587
Loans measured at fair value	0		0
Total loans and leases held for investment	892,665		947,029
Paycheck Protection Program Loans [Member]
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	0
Ending balance: pooled	0
Total: Allowance for Credit Loss	0
Loans and Leases Held for Investment [Abstract]
Ending balance: individually analyzed	0
Ending balance: pooled	483,773
Loans measured at fair value	0
Total loans and leases held for investment	483,773		0
Real Estate-Commercial [Member]
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	0
Ending balance: pooled	52,230
Total: Allowance for Credit Loss	52,230	15,750	15,750
Loans and Leases Held for Investment [Abstract]
Ending balance: individually analyzed	22,739
Ending balance: pooled	2,435,946
Loans measured at fair value	187
Total loans and leases held for investment	2,458,872		2,040,441
Real Estate-Construction [Member]
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	0
Ending balance: pooled	3,298
Total: Allowance for Credit Loss	3,298	2,446	2,446
Loans and Leases Held for Investment [Abstract]
Ending balance: individually analyzed	0
Ending balance: pooled	243,355
Loans measured at fair value	0
Total loans and leases held for investment	243,355		232,595
Real Estate-Commercial and Construction [Member]
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed			1,562
Ending balance: pooled			16,634
Total: Allowance for Credit Loss			18,196	13,903	9,839
Loans and Leases Held for Investment [Abstract]
Ending balance: individually analyzed			28,185
Ending balance: pooled			2,244,534
Loans measured at fair value			317
Total loans and leases held for investment			2,273,036
Real Estate-Residential Secured for Business Purpose [Member]
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	24		306
Ending balance: pooled	7,293		2,316
Total: Allowance for Credit Loss	7,317	2,622	2,622	2,236	1,661
Loans and Leases Held for Investment [Abstract]
Ending balance: individually analyzed	2,786		2,980
Ending balance: pooled	378,660		370,993
Loans measured at fair value	0		0
Total loans and leases held for investment	381,446		373,973
Real Estate-Residential Secured for Personal Purpose [Member]
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	26
Ending balance: pooled	3,029
Total: Allowance for Credit Loss	3,055	2,713	2,713
Loans and Leases Held for Investment [Abstract]
Ending balance: individually analyzed	2,086
Ending balance: pooled	485,514
Loans measured at fair value	0
Total loans and leases held for investment	487,600		439,059
Real Estate-Home Equity Secured for Personal Purpose [Member]
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	0
Ending balance: pooled	1,176
Total: Allowance for Credit Loss	1,176	1,076	1,076
Loans and Leases Held for Investment [Abstract]
Ending balance: individually analyzed	1,047
Ending balance: pooled	165,562
Loans measured at fair value	0
Total loans and leases held for investment	166,609		174,435
Real Estate-Residential and Home Equity Secured for Personal Purpose [Member]
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed			196
Ending balance: pooled			3,593
Total: Allowance for Credit Loss			3,789	3,199	1,754
Loans and Leases Held for Investment [Abstract]
Ending balance: individually analyzed			3,519
Ending balance: pooled			609,975
Loans measured at fair value			0
Total loans and leases held for investment			613,494
Loans to Individuals [Member]
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	0		0
Ending balance: pooled	533		470
Total: Allowance for Credit Loss	533	470	470	484	373
Loans and Leases Held for Investment [Abstract]
Ending balance: individually analyzed	0		0
Ending balance: pooled	27,482		29,883
Loans measured at fair value	0		0
Total loans and leases held for investment	27,482		29,883
Lease Financings [Member]
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	0		0
Ending balance: pooled	1,701		1,311
Total: Allowance for Credit Loss	1,701	1,311	1,311	1,288	1,132
Loans and Leases Held for Investment [Abstract]
Ending balance: individually analyzed	0		277
Ending balance: pooled	165,039		149,144
Loans measured at fair value	0		0
Total loans and leases held for investment	165,039		149,421
Unallocated [Member]
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: pooled	150		184
Total: Allowance for Credit Loss	$ 150	$ 184	$ 184	$ 271	$ 54

Loans and Leases - Troubled Deb

Loans and Leases - Troubled Debt Restructured Loans (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)Investmentloan	Dec. 31, 2019USD ($)loanInvestment
Accrual Troubled Debt Restructuring Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	0	1
Pre-restructuring outstanding recorded investment	$ 0	$ 55
Post-restructuring outstanding recorded investment	$ 0	$ 55
Nonaccrual Troubled Debt Restructured Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	2	6
Pre-restructuring outstanding recorded investment	$ 1,163	$ 13,889
Post-restructuring outstanding recorded investment	$ 1,163	$ 13,889
Real Estate-Residential Secured for Personal Purpose [Member] | Accrual Troubled Debt Restructuring Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | Investment	0	1
Pre-restructuring outstanding recorded investment	$ 0	$ 55
Post-restructuring outstanding recorded investment	$ 0	$ 55
Real Estate-Residential Secured for Personal Purpose [Member] | Nonaccrual Troubled Debt Restructured Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	1	0
Pre-restructuring outstanding recorded investment	$ 544	$ 0
Post-restructuring outstanding recorded investment	$ 544	$ 0
Commercial, Financial and Agricultural [Member] | Nonaccrual Troubled Debt Restructured Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	1	4
Pre-restructuring outstanding recorded investment	$ 619	$ 1,475
Post-restructuring outstanding recorded investment	$ 619	$ 1,475
Real Estate-Commercial [Member] | Nonaccrual Troubled Debt Restructured Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	0	2
Pre-restructuring outstanding recorded investment	$ 0	$ 12,414
Post-restructuring outstanding recorded investment	$ 0	$ 12,414

Loans and Leases - Concessions

Loans and Leases - Concessions Granted on Accruing and Nonaccrual Loans Restructured (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)loanInvestment	Dec. 31, 2019USD ($)loanInvestment
Accrual Troubled Debt Restructuring Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	0	1
Amount	$ 0	$ 55
Accrual Troubled Debt Restructuring Loans [Member] | Maturity Date Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	0	0
Amount	$ 0	$ 0
Accrual Troubled Debt Restructuring Loans [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	0	1
Amount	$ 0	$ 55
Accrual Troubled Debt Restructuring Loans [Member] | Incremental Extension of Credit [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	0	0
Amount	$ 0	$ 0
Nonaccrual Troubled Debt Restructured Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	2	6
Amount	$ 1,163	$ 13,889
Nonaccrual Troubled Debt Restructured Loans [Member] | Maturity Date Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	0	1
Amount	$ 0	$ 19
Nonaccrual Troubled Debt Restructured Loans [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	2	3
Amount	$ 1,163	$ 2,269
Nonaccrual Troubled Debt Restructured Loans [Member] | Incremental Extension of Credit [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	0	2
Amount	$ 0	$ 11,601
Real Estate-Home Equity Secured for Personal Purpose [Member] | Accrual Troubled Debt Restructuring Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan		1
Amount		$ 55
Real Estate-Home Equity Secured for Personal Purpose [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Maturity Date Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan		0
Amount		$ 0
Real Estate-Home Equity Secured for Personal Purpose [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan		1
Amount		$ 55
Real Estate-Home Equity Secured for Personal Purpose [Member] | Accrual Troubled Debt Restructuring Loans [Member] | Incremental Extension of Credit [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan		0
Amount		$ 0
Commercial, Financial and Agricultural [Member] | Nonaccrual Troubled Debt Restructured Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	1	4
Amount	$ 619	$ 1,475
Commercial, Financial and Agricultural [Member] | Nonaccrual Troubled Debt Restructured Loans [Member] | Maturity Date Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	0	1
Amount	$ 0	$ 19
Commercial, Financial and Agricultural [Member] | Nonaccrual Troubled Debt Restructured Loans [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	1	2
Amount	$ 619	$ 956
Commercial, Financial and Agricultural [Member] | Nonaccrual Troubled Debt Restructured Loans [Member] | Incremental Extension of Credit [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans	0	1
Amount	$ 0	$ 500
Real Estate-Commercial [Member] | Nonaccrual Troubled Debt Restructured Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	0	2
Amount		$ 12,414
Real Estate-Commercial [Member] | Nonaccrual Troubled Debt Restructured Loans [Member] | Maturity Date Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan		0
Amount		$ 0
Real Estate-Commercial [Member] | Nonaccrual Troubled Debt Restructured Loans [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan		1
Amount		$ 1,313
Real Estate-Commercial [Member] | Nonaccrual Troubled Debt Restructured Loans [Member] | Incremental Extension of Credit [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | Investment		1
Amount		$ 11,101
Real Estate-Residential Secured for Personal Purpose [Member] | Accrual Troubled Debt Restructuring Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | Investment	0	1
Real Estate-Residential Secured for Personal Purpose [Member] | Nonaccrual Troubled Debt Restructured Loans [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	1	0
Amount	$ 544
Real Estate-Residential Secured for Personal Purpose [Member] | Nonaccrual Troubled Debt Restructured Loans [Member] | Maturity Date Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	0
Amount	$ 0
Real Estate-Residential Secured for Personal Purpose [Member] | Nonaccrual Troubled Debt Restructured Loans [Member] | Amortization Period Extension [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	1
Amount	$ 544
Real Estate-Residential Secured for Personal Purpose [Member] | Nonaccrual Troubled Debt Restructured Loans [Member] | Incremental Extension of Credit [Member]
Concessions granted on accruing and non-accrual loans restructured
No. of loans | loan	0
Amount	$ 0

Loans and Leases - Accruing and

Loans and Leases - Accruing and Nonaccrual Troubled Debt Restructured Loans with Payment Defaults (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)loan	Dec. 31, 2019USD ($)loan
Accrual Troubled Debt Restructuring Loans [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of loans | loan	0	0
Recorded investment | $	$ 0	$ 0
Nonaccrual Troubled Debt Restructured Loans [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of loans | loan	0	1
Recorded investment | $	$ 0	$ 17
Nonaccrual Troubled Debt Restructured Loans [Member] | Commercial, Financial and Agricultural [Member]
Accruing and nonaccrual troubled debt restructured loans with payment default
Number of loans | loan	0	1
Recorded investment | $	$ 0	$ 17

Loans and Leases - Mortgages in

Loans and Leases - Mortgages in the Process of Foreclosure (Details) - Residential Real Estate [Member] - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]
Mortgage loans in process of foreclosure, amount	$ 64	$ 1,772
Real Estate-Residential Secured for Personal Purpose [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Mortgage loans in process of foreclosure, amount	64	714
Real Estate-Home Equity Secured for Personal Purpose [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Mortgage loans in process of foreclosure, amount	$ 0	$ 1,058

Loans and Leases - Foreclosed R

Loans and Leases - Foreclosed Residential Real Estate (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Foreclosed residential real estate	$ 0	$ 71

Loans and Leases - Schedule of

Loans and Leases - Schedule of Maturities of Lease Financing Receiveables (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
2020		$ 57,515
2021	$ 61,724	45,510
2022	49,970	32,233
2023	35,631	18,345
2024	20,821	6,639
2025	8,319	957
Thereafter	2,763	1,302
Total lease financing receivables	179,228	162,501
Unguaranteed residual	914	886
Initial direct costs	2,567	2,374
Imputed interest	(17,670)	(16,340)
Net investment in lease financing receivables	$ 165,039	$ 149,421

Premises and Equipment - Compon

Premises and Equipment - Components of Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total cost	$ 100,626	$ 97,128
Less: accumulated depreciation	(44,990)	(40,452)
Net book value	55,636	56,676
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	14,549	14,292
Premises and Improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	55,703	54,158
Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 30,374	$ 28,678

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill And Other Intangible Assets [Line Items]
Goodwill impairment	$ 0	$ 0	$ 0
Amortization of intangible assets	4.5	3.5	3.4
Impairments to identifiable intangible assets	0	0	$ 0
Mortgage Servicing Rights [Member]
Goodwill And Other Intangible Assets [Line Items]
Aggregate fair value of servicing rights	$ 6.7	$ 9.2
Range of discount rates used for valuation of mortgage servicing rights	10.00%	10.00%

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Summary of Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill, beginning balance	$ 172,559	$ 172,559
Goodwill, acquired during period	0	0
Goodwill, ending balance	172,559	172,559
Banking [Member]
Goodwill [Line Items]
Goodwill, beginning balance	138,476	138,476
Goodwill, acquired during period	0	0
Goodwill, ending balance	138,476	138,476
Wealth Management [Member]
Goodwill [Line Items]
Goodwill, beginning balance	15,434	15,434
Goodwill, acquired during period	0	0
Goodwill, ending balance	15,434	15,434
Insurance [Member]
Goodwill [Line Items]
Goodwill, beginning balance	18,649	18,649
Goodwill, acquired during period	0	0
Goodwill, ending balance	$ 18,649	$ 18,649

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Components of Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 36,746	$ 34,767
Accumulated amortization	27,880	24,483
Net carrying amount	8,866	10,284
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	6,788	6,788
Accumulated amortization	4,787	4,026
Net carrying amount	2,001	2,762
Customer Related Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	7,604	8,819
Accumulated amortization	7,147	7,923
Net carrying amount	457	896
Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	22,354	19,160
Accumulated amortization	15,946	12,534
Net carrying amount	$ 6,408	$ 6,626

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Estimated Amortization Expense for Core Deposit and Customer Related Intangibles (Detail) $ in Thousands	Dec. 31, 2020USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2021	$ 923
2022	666
2023	409
2024	267
2025	144
Thereafter	49
Total	$ 2,458

Goodwill and Other Intangible_7

Goodwill and Other Intangible Assets - Changes in Servicing Rights (Detail) - Servicing Rights [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Beginning of period	$ 6,626	$ 6,768	$ 6,573
Servicing rights capitalized	3,194	1,787	1,458
Amortization of servicing rights	(3,325)	(1,929)	(1,263)
Changes in valuation allowance	(87)	0	0
End of period	6,408	6,626	6,768
Residential mortgage and SBA loans serviced for others	$ 1,200,742	$ 1,080,905	$ 1,031,506

Goodwill and Other Intangible_8

Goodwill and Other Intangible Assets - Activity In The Valuation Allowance For Mortgage Servicing Rights (Details) - Mortgage Servicing Rights [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items]
Valuation allowance, beginning of period	$ 0	$ 0	$ 0
Additions	(87)	0	0
Valuation allowance, end of period	$ (87)	$ 0	$ 0

Goodwill and Other Intangible_9

Goodwill and Other Intangible Assets - Estimated Amortization Expense of Servicing Rights (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
2021	$ 923
2022	666
2023	409
2024	267
2025	144
Thereafter	49
Total	2,458
Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
2021	1,675
2022	1,250
2023	931
2024	693
2025	427
Thereafter	1,432
Servicing Asset at Amortized Cost, Amortization	3,325	$ 1,929	$ 1,263
Servicing Asset at Amortized Cost	$ 6,408	$ 6,626	$ 6,768	$ 6,573

Accrued Interest Receivable a_3

Accrued Interest Receivable and Other Assets - Details of Accrued Interest Receivable and Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Interest Receivable and Other Assets [Abstract]
Other real estate owned	$ 7,355	$ 516
Accrued interest receivable	16,475	14,100
Accrued income and other receivables	7,340	6,973
Fair market value of derivative financial instruments	2,894	399
Other prepaid expenses	11,470	13,936
Net deferred tax assets	16,514	3,615
Other assets	3,291	680
Total accrued interest and other assets	$ 65,339	$ 40,219

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Banking and Thrift, Other Disclosures [Abstract]
Aggregate amount of time deposits in denominations of $100 thousand or more	$ 296.7	$ 293.2
Aggregate amount of time deposits in denominations over $250 thousand	$ 161.6	$ 143

Deposits - Schedule of Componen

Deposits - Schedule of Components of Weighted Average Interest Rate and Balance of Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Weighted Average Rate Domestic Deposit Liabilities [Abstract]
Noninterest-bearing deposits	0.00%	0.00%
Demand deposits	0.22%	0.96%
Savings deposits	0.08%	0.37%
Time deposits	1.30%	1.95%
Deposits	0.24%	0.71%
Deposits
Noninterest-bearing deposits	$ 1,690,663	$ 1,279,681
Demand deposits	2,070,183	1,677,682
Savings deposits	918,094	796,702
Time deposits	563,775	606,010
Total deposits	$ 5,242,715	$ 4,360,075

Deposits - Schedule of Maturiti

Deposits - Schedule of Maturities of Time Deposits (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Banking and Thrift, Other Disclosures [Abstract]
Due in 2021	$ 12,178
Due in 2022	304,928
Due in 2023	93,332
Due in 2024	115,886
Due in 2025	24,000
Thereafter	13,451
Total	$ 563,775	$ 606,010

Borrowings - Additional Informa

Borrowings - Additional Information (Detail) - USD ($)	Aug. 05, 2020	Jul. 01, 2016	Mar. 30, 2015	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Aug. 14, 2030	Jun. 29, 2026	Mar. 30, 2025
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 2,200,000,000
Outstanding short term letters of credit				669,700,000	$ 535,600,000
Available borrowing capacity from the Federal Home Loan Bank				1,400,000,000
Investment securities collateral for Federal Reserve Bank Discount Window Lending program				40,700,000	94,800,000
Outstanding amount of federal fund line of credit with Federal Reserve Bank of Philadelphia				0	0
Amount of maintained line of credit with correspondent bank - parent company				10,000,000
Outstanding amount of line of credit with correspondent bank - parent company				0	0
Total committed borrowing capacity				2,200,000,000	1,900,000,000
Total committed borrowing capacity available				1,500,000,000	1,200,000,000
Amount of maintained federal fund lines of credit with correspondent banks				460,000,000	504,000,000
Proceeds from issuance of subordinated notes				100,000,000	0	$ 0
Repayment of subordinated notes				10,000,000	$ 0	$ 0
Subordinated Debt [Member] | Fixed-to-Floating Rate, Subordinated Debt, Due in 2030 [Member]
Debt Instrument [Line Items]
Aggregate principal amount of debt	$ 100,000,000
Annual fixed rate of interest	5.00%
Proceeds from issuance of subordinated notes	$ 98,400,000
Debt issuance costs	$ 1,600,000
Term of debt issuance costs amortization	5 years
Subordinated Debt [Member] | Fixed-to-Floating Rate, Subordinated Debt, Due in 2030 [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Forecast [Member]
Debt Instrument [Line Items]
Basis spread of interest rate (LIBOR)							495.20%
Debt Instrument, Term of Variable Rate Basis							3 months
Subordinated Debt [Member] | Fixed-to-Floating Rate, Subordinated Debt, Due in 2026 [Member]
Debt Instrument [Line Items]
Aggregate principal amount of debt		$ 45,000,000
Annual fixed rate of interest		5.00%
Proceeds from issuance of subordinated notes		$ 44,500,000
Redemption price percentage of principal amount of redeemed debt		100.00%
Subordinated Debt [Member] | Fixed-to-Floating Rate, Subordinated Debt, Due in 2026 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Forecast [Member]
Debt Instrument [Line Items]
Basis spread of interest rate (LIBOR)								3.90%
Subordinated Debt [Member] | Fixed-to-Floating Rate, Subordinated Debt, Due in 2025 [Member]
Debt Instrument [Line Items]
Aggregate principal amount of debt			$ 50,000,000
Annual fixed rate of interest			5.10%
Proceeds from issuance of subordinated notes			$ 49,300,000
Redemption price percentage of principal amount of redeemed debt			100.00%
Repayment of subordinated notes				$ 10,000,000
Subordinated Debt [Member] | Fixed-to-Floating Rate, Subordinated Debt, Due in 2025 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Forecast [Member]
Debt Instrument [Line Items]
Basis spread of interest rate (LIBOR)									3.544%

Borrowings - Summary of Borrowi

Borrowings - Summary of Borrowings By Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Schedule of Borrowings [Line Items]
Balance at end of year	$ 17,906	$ 18,680
Federal Home Loan Bank Advances [Member]
Schedule of Borrowings [Line Items]
Balance at end of year	$ 110,000	$ 140,000
Weighted average interest rate	1.42%	2.04%
Maximum amount outstanding at month end during the year	$ 200,000	$ 150,000
Average amount outstanding during the year	$ 181,722	$ 139,397
Weighted average interest rate during the year	1.54%	2.00%
Securities Sold under Agreements to Repurchase [Member]
Schedule of Borrowings [Line Items]
Balance at end of year		$ 10,098
Weighted average interest rate		2.07%
Maximum amount outstanding at month end during the year		$ 20,308
Average amount outstanding during the year		$ 16,969
Weighted average interest rate during the year		2.61%
Subordinated Debt [Member]
Schedule of Borrowings [Line Items]
Balance at end of year	$ 183,515	$ 94,818
Weighted average interest rate	4.96%	5.32%
Maximum amount outstanding at month end during the year	$ 193,481	$ 94,818
Average amount outstanding during the year	$ 134,949	$ 94,695
Weighted average interest rate during the year	5.01%	5.33%
Federal Home Loan Bank Advances [Member]
Schedule of Borrowings [Line Items]
Balance at end of year	$ 0	$ 0
Weighted average interest rate	0.00%	0.00%
Maximum amount outstanding at month end during the year	$ 0	$ 190,740
Average amount outstanding during the year	$ 5,048	$ 23,485
Weighted average interest rate during the year	1.68%	2.57%
Federal Funds Purchased [Member]
Schedule of Borrowings [Line Items]
Balance at end of year	$ 0	$ 0
Weighted average interest rate	0.00%	0.00%
Maximum amount outstanding at month end during the year	$ 40,000	$ 8,500
Average amount outstanding during the year	$ 1,388	$ 15,217
Weighted average interest rate during the year	1.64%	2.63%
Securities Sold under Agreements to Repurchase [Member]
Schedule of Borrowings [Line Items]
Balance at end of year	$ 17,906	$ 18,680
Weighted average interest rate	0.05%	0.05%
Maximum amount outstanding at month end during the year	$ 39,615	$ 22,995
Average amount outstanding during the year	$ 20,747	$ 18,180
Weighted average interest rate during the year	0.05%	0.05%
Short-term Debt
Schedule of Borrowings [Line Items]
Balance at end of year	$ 0
Weighted average interest rate	0.00%
Maximum amount outstanding at month end during the year	$ 192,936
Average amount outstanding during the year	$ 59,475
Weighted average interest rate during the year	0.35%

Borrowings - Schedule of Maturi

Borrowings - Schedule of Maturities of Long-term FHLB Advances (Details) $ in Thousands	Dec. 31, 2020USD ($)
Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract]
2021	$ 15,000
2022	0
2023	35,000
2024	60,000
2025	0
Thereafter	0
Total Advances	$ 110,000
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract]
2021 Weighted average interest rate	1.93%
2022 Weighted average interest rate	0.00%
2023 Weighted average interest rate	1.94%
2024 Weighted average interest rate	0.98%
2025 Weighted average interest rate	0.00%
Thereafter Weighted average interest rate	0.00%
Weighted average interest rate	1.42%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Contingency [Line Items]
Income tax benefit for deferred tax temporary differences		$ 300,000
Amount for which no federal income tax provision has been made	$ 6,000,000	6,000,000	$ 6,000,000
Unrecognized tax benefits	0	$ 0
State and Local Jurisdiction [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 71,200,000
Operating loss carryforwards, expiration year	2021
Minimum [Member]
Income Tax Contingency [Line Items]
Open tax years	2017

Income Taxes - Provision for Fe

Income Taxes - Provision for Federal and State Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal									$ 18,498	$ 15,043	$ 9,770
State									1,337	1,098	972
Deferred:
Federal									(9,288)	(1,068)	(862)
State									(566)	(739)	263
Provision for federal and state income taxes, total	$ 5,773	$ 5,078	$ (264)	$ (606)	$ 3,384	$ 3,782	$ 3,669	$ 3,499	$ 9,981	$ 14,334	$ 10,143

Income Taxes - Income Tax Provi

Income Taxes - Income Tax Provision Differences from Expected Statutory Provision (Detail)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Expected provision at statutory rate	21.00%	21.00%	21.00%
Difference resulting from:
Tax exempt interest income, net of disallowance	(3.80%)	(3.20%)	(4.00%)
Increase in value of bank owned life insurance assets	(1.10%)	(0.80%)	(1.10%)
Stock-based compensation	0.20%	0.00%	(0.20%)
State income taxes, net of federal benefits	1.10%	0.40%	1.60%
Adjustment to deferred tax assets and liabilities for enacted changes in tax laws and rates	0	0	(0.005)
Changes in valuation allowance	0.20%	0.20%	0.10%
Other	(0.10%)	0.30%	(0.20%)
Provision for income taxes - effective income tax rate	17.50%	17.90%	16.70%

Income Taxes - Components of De

Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Allowance for credit losses, loans and leases	$ 18,113	$ 7,680
Deferred compensation	1,625	1,834
Actuarial adjustments on retirement benefits*	5,408	4,868
State net operating losses	5,621	5,071
Other-than-temporary impairments on equity securities	151	151
Net unrealized holding losses on securities available-for-sale and swaps	483	915
Lease liability	8,227	8,177
Deferred loan fees and costs	583	0
Other deferred tax assets	2,148	1,146
Gross deferred tax assets	42,359	29,842
Valuation allowance	(4,766)	(4,284)
Total deferred tax assets, net of valuation allowance	37,593	25,558
Deferred tax liabilities:
Mortgage servicing rights	1,370	1,404
Retirement plans	5,309	5,299
Deferred loan fees and costs	0	1,330
Acquisition-related fair value adjustments	1,236	1,515
Intangible assets	2,580	1,956
Accounting method change adjustment	385	768
Depreciation	888	1,137
Right of use asset	7,491	7,481
Other deferred tax liabilities	1,820	1,053
Total deferred tax liabilities	21,079	21,943
Net deferred tax assets	$ 16,514	$ 3,615

Retirement Plans and Other Po_3

Retirement Plans and Other Postretirement Benefits - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected long-term rate of return	6.50%
Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, target allocation, percentage	60.00%
Debt [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, target allocation, percentage	40.00%
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation arrangement with individual, compensation expense	$ 224	$ 134	$ 215
Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions for next fiscal year	$ 156
Defined benefit plan, expected long-term rate of return	6.50%	7.00%
Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions for next fiscal year	$ 94
Defined benefit plan, expected long-term rate of return	0.00%	0.00%
Deferred Salary Savings Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, cost	$ 1,800	$ 1,500	$ 1,400

Retirement Plans and Other Po_4

Retirement Plans and Other Postretirement Benefits - Summary of Retirement Plans and Other Postretirement Benefits (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Change in plan assets:
Fair value of plan assets at beginning of year	$ 51,607,000
Fair value of plan assets at end of year	55,366,000	$ 51,607,000
Retirement Plans [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	53,685,000	46,868,000
Service cost	477,000	436,000	$ 560,000
Interest cost	1,692,000	1,905,000	1,760,000
Actuarial loss	6,423,000	7,104,000
Benefits paid	(2,846,000)	(2,628,000)
Benefit obligation at end of year	59,431,000	53,685,000	46,868,000
Change in plan assets:
Fair value of plan assets at beginning of year	51,607,000	45,379,000
Actual return on plan assets	6,306,000	8,696,000
Benefits paid	(2,846,000)	(2,628,000)
Corrective payment	140,000	0
Employer contribution and non-qualified benefit payments	159,000	160,000
Fair value of plan assets at end of year	55,366,000	51,607,000	45,379,000
Funded status	(4,065,000)	(2,078,000)
Unrecognized net actuarial loss	24,526,000	22,433,000
Net amount recognized	20,461,000	20,355,000
Other Post Retirement Benefits [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	3,069,000	2,283,000
Service cost	109,000	67,000	88,000
Interest cost	96,000	94,000	92,000
Actuarial loss	377,000	731,000
Benefits paid	(111,000)	(106,000)
Benefit obligation at end of year	3,540,000	3,069,000	2,283,000
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Benefits paid	(111,000)	(106,000)
Corrective payment	0	0
Employer contribution and non-qualified benefit payments	111,000	106,000
Fair value of plan assets at end of year	0	0	$ 0
Funded status	(3,540,000)	(3,069,000)
Unrecognized net actuarial loss	989,000	638,000
Net amount recognized	$ (2,551,000)	$ (2,431,000)

Retirement Plans and Other Po_5

Retirement Plans and Other Postretirement Benefits - Information for Pension Plans with Accumulated Benefit Obligation in Excess of Plan Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Projected benefit obligation	$ 57,116	$ 51,443
Accumulated benefit obligation	55,642	48,629
Fair value of plan assets	$ 55,366	$ 51,607

Retirement Plans and Other Po_6

Retirement Plans and Other Postretirement Benefits - Components of Net Periodic Benefit Cost (Income) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 477	$ 436	$ 560
Interest cost	1,692	1,905	1,760
Expected loss on plan assets	(3,291)	(3,061)	(3,287)
Amortization of net actuarial loss	1,176	1,176	1,120
Accretion of prior service cost	0	(181)	(283)
Net periodic benefit cost (income)	54	275	(130)
Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	109	67	88
Interest cost	96	94	92
Expected loss on plan assets	0	0	0
Amortization of net actuarial loss	26	0	4
Accretion of prior service cost	0	0	0
Net periodic benefit cost (income)	$ 231	$ 161	$ 184

Retirement Plans and Other Po_7

Retirement Plans and Other Postretirement Benefits - Expected Amortization Expense (Detail) $ in Thousands	Dec. 31, 2020USD ($)
Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of net actuarial loss	$ 1,270
Accretion of prior service cost	0
Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of net actuarial loss	46
Accretion of prior service cost	$ 0

Retirement Plans and Other Po_8

Retirement Plans and Other Postretirement Benefits - Summary of Benefit Payments Expected to be Paid (Detail) $ in Thousands	Dec. 31, 2020USD ($)
Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
2021	$ 2,956
2022	2,985
2023	3,049
2024	3,063
2025	3,050
Years 2026-2030	15,336
Total	30,439
Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
2021	94
2022	96
2023	102
2024	107
2025	109
Years 2026-2030	703
Total	$ 1,211

Retirement Plans and Other Po_9

Retirement Plans and Other Postretirement Benefits - Weighted-Average Assumptions Used to Determine Benefit Obligations (Detail)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Assumed long-term rate of investment return	6.50%
Other Post Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed discount rate	2.40%	3.20%
Assumed discount rate	3.20%	4.20%
Assumed salary increase rate	0.00%	0.00%
Assumed long-term rate of investment return	0.00%	0.00%
Assumed salary increase rate	0.00%	0.00%
Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed discount rate	2.40%	3.20%
Assumed discount rate	3.20%	4.20%
Assumed long-term rate of investment return	6.50%	7.00%
Retirement Plans [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed salary increase rate	3.00%	3.00%
Assumed salary increase rate	3.00%	3.00%
Retirement Plans [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Assumed salary increase rate	6.00%	6.00%
Assumed salary increase rate	6.00%	6.00%

Retirement Plans and Other P_10

Retirement Plans and Other Postretirement Benefits - Summary of Corporation's Pension Plan Asset Allocation (Detail)	Dec. 31, 2020	Dec. 31, 2019
Summary of corporation's pension plan asset allocation
Assets category, total	100.00%	100.00%
Equity Securities [Member]
Summary of corporation's pension plan asset allocation
Assets category, total	60.00%	61.00%
Debt Securities [Member]
Summary of corporation's pension plan asset allocation
Assets category, total	37.00%	38.00%
Other [Member]
Summary of corporation's pension plan asset allocation
Assets category, total	3.00%	1.00%

Retirement Plans and Other P_11

Retirement Plans and Other Postretirement Benefits - Major Categories of Assets in Corporation's Pension Plan (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of plan assets	$ 55,366	$ 51,607
Mutual Fund [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of plan assets	37,602	34,332
Short-term Investments [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of plan assets	1,984	1,068
U.S. Government Obligations [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of plan assets	5,721	6,167
Corporate Bonds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of plan assets	6,204	6,540
Certificates of Deposit [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value of plan assets	$ 3,855	$ 3,500

Stock-Based Incentive Plan - Ad

Stock-Based Incentive Plan - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share awards authorized for issuance	3,706,946
Contractual term	10 years
Options to purchase common stock outstanding	453,785	508,111
Unvested restricted stock awards and units outstanding under the plan	305,704	209,378
2013 Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards available for future grant	2,509,615
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common shares as a percentage of fair market value	100.00%
Restricted Stock Awards and Restricted Stock Units [Member] | 2003 Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock awards and units outstanding under the plan	305,704

Stock-Based Incentive Plan - St

Stock-Based Incentive Plan - Status of Options Granted Under Long-Term Incentive Plan (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)$ / sharesshares
Shares Under Option
Shares under option, outstanding, beginning balance | shares	508,111
Shares under option, expired | shares	(2,000)
Shares under option, forfeited | shares	(30,826)
Shares under option, exercised | shares	(21,500)
Share under option, outstanding, ending balance | shares	453,785
Shares under options, exercisable at December 31 | shares	404,014
Weighted Average Exercise Price Per Share [Abstract]
Weighted average exercise price per share, outstanding, beginning balance | $ / shares	$ 24.83
Weighted average exercise price per share, expired | $ / shares	28.33
Weighted average exercise price per share, forfeited | $ / shares	26.10
Weighted average exercise price per share, exercised | $ / shares	17.84
Weighted average exercise price per share, outstanding, ending balance | $ / shares	25.06
Weighted average exercise price per share, exercisable at December 31, 2020 | $ / shares	$ 24.63
Weighted average remaining contractual life, outstanding at December 31, 2020	5 years 9 months 18 days
Weighted average remaining contractual life, exercisable at December 31, 2020	5 years 7 months 6 days
Aggregate intrinsic value, outstanding at December 31, 2020 | $	$ 268
Aggregate intrinsic Value, exercisable at December 31, 2020 | $	$ 268

Stock-Based Incentive Plan - Su

Stock-Based Incentive Plan - Summary of Nonvested Stock Options (Details)	12 Months Ended
	Dec. 31, 2020$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Nonvested stock options, beginning balance | shares	163,261
Nonvested stock options, vested | shares	(106,131)
Nonvested stock options, forfeited | shares	(7,359)
Nonvested stock options, ending balance | shares	49,771
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted average grant date fair value, beginning balance | $ / shares	$ 6.54
Weighted average grant date fair value, vested | $ / shares	6.58
Weighted average grant date fair value, forfeited | $ / shares	6.48
Weighted average grant date fair value, ending balance | $ / shares	$ 6.46

Stock-Based Incentive Plan - Ag

Stock-Based Incentive Plan - Aggregated Assumptions Used to Estimate Fair Value of Options Granted (Detail)	12 Months Ended
	Dec. 31, 2018$ / shares
Share-based Payment Arrangement [Abstract]
Expected option life in years - weighted average	6 years 7 months 6 days
Risk free interest rate - weighted average	2.80%
Expected dividend yield - weighted average	2.81%
Expected volatility - weighted average	27.15%
Fair value of options	$ 6.46

Stock-Based Incentive Plan - _2

Stock-Based Incentive Plan - Summary of Nonvested Restricted Stock Awards and Units (Detail)	12 Months Ended
	Dec. 31, 2020$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested share awards, beginning balance | shares	209,378
Nonvested share awards and units, granted | shares	262,844
Nonvested share awards and units, vested | shares	(59,855)
Nonvested share awards and units, forfeited | shares	(106,663)
Nonvested share awards, ending balance | shares	305,704
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted average grant date fair value, beginning balance | $ / shares	$ 26.76
Weighted average grant date fair value, granted | $ / shares	19
Weighted average grant date fair value | $ / shares	27.17
Weighted average grant date fair value, forfeited | $ / shares	23.39
Weighted average grant date fair value, ending balance | $ / shares	$ 21.18

Stock-Based Incentive Plan - Ce

Stock-Based Incentive Plan - Certain Information Regarding Restricted Stock (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards and units granted	262,844
Weighted average grant date fair value	$ 19
Restricted stock awards and units vested	59,855
Weighted average grant date fair value	$ 27.17
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards and units granted			59,953
Weighted average grant date fair value			$ 28.39
Intrinsic value of awards granted			$ 1,293
Restricted stock awards and units vested			97,201
Weighted average grant date fair value			$ 20.13
Intrinsic value of awards vested			$ 2,709
Restricted Stock Awards and Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards and units granted	262,844	114,729
Weighted average grant date fair value	$ 19	$ 25.65
Intrinsic value of awards granted	$ 4,994	$ 3,072
Restricted stock awards and units vested	59,855	44,807
Weighted average grant date fair value	$ 27.17	$ 21.65
Intrinsic value of awards vested	$ 1,375	$ 1,119

Stock-Based Incentive Plan - Sc

Stock-Based Incentive Plan - Schedule of Unrecognized Compensation Cost, Nonvested Awards (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 4,134
Weighted-average period remaining (years)	1 year 8 months 12 days
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 62
Weighted-average period remaining (years)	2 months 12 days
Restricted Stock Awards and Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 4,072
Weighted-average period remaining (years)	1 year 8 months 12 days

Stock-Based Incentive Plan - Co

Stock-Based Incentive Plan - Compensation Expense Related to Stock Incentive Plans Recognized (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stock-based compensation expense:
Total expense	$ 1,568	$ 2,422	$ 2,625
Tax benefit on nonqualified stock option expense, restricted stock awards and disqualifying dispositions of incentive stock options	278	518	620
Stock Options [Member]
Stock-based compensation expense:
Total expense	338	716	1,020
Restricted Stock Awards [Member]
Stock-based compensation expense:
Total expense			1,537
Restricted Stock Awards and Restricted Stock Units [Member]
Stock-based compensation expense:
Total expense	1,142	1,632
Employee Stock Purchase Plan [Member]
Stock-based compensation expense:
Total expense	$ 88	$ 74	$ 68

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive (Loss) Income, Net of Taxes (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive (Loss) Income [Line Items]
Beginning balance		$ (21,730)
Cumulative effect on retained earnings		692,472	$ 675,122	$ 624,133	$ 603,374
Other comprehensive income (loss)		(651)	6,603	(6,291)
Ending balance		(22,144)	(21,730)
Net Unrealized Holding (Losses) Gains on Available-for-Sale Investment Securities [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Beginning balance		(3,231)	(11,221)	(4,061)
Other comprehensive income (loss)		1,615	7,990	(5,759)
Ending balance		(1,379)	(3,231)	(11,221)
Net Change Related to Derivative Used for Cash Flow Hedge [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Beginning balance		(185)	81	9
Other comprehensive income (loss)		(236)	(349)	70
Ending balance		(421)	(185)	81
Net Change Related to Defined Benefit Pension Plan [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Beginning balance		(18,314)	(17,276)	(13,719)
Other comprehensive income (loss)		(2,030)	(1,038)	(602)
Ending balance		(20,344)	(18,314)	(17,276)
Accumulated Other Comprehensive (Loss) Income [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Beginning balance		(21,730)	(28,416)	(17,771)
Cumulative effect on retained earnings		(22,144)	(21,730)	(28,416)	(17,771)
Other comprehensive income (loss)		(651)	6,603	(6,291)
Ending balance		$ (22,144)	(21,730)	(28,416)
Accounting Standards Update 2016-01 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings					0
Accounting Standards Update 2016-01 [Member] | Net Unrealized Holding (Losses) Gains on Available-for-Sale Investment Securities [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings					(433)
Accounting Standards Update 2016-01 [Member] | Net Change Related to Derivative Used for Cash Flow Hedge [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings					0
Accounting Standards Update 2016-01 [Member] | Net Change Related to Defined Benefit Pension Plan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings					0
Accounting Standards Update 2016-01 [Member] | Accumulated Other Comprehensive (Loss) Income [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings					(433)
Accounting Standards Update 2018-02 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings					0
Accounting Standards Update 2018-02 [Member] | Net Unrealized Holding (Losses) Gains on Available-for-Sale Investment Securities [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings					(968)
Accounting Standards Update 2018-02 [Member] | Net Change Related to Derivative Used for Cash Flow Hedge [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings					2
Accounting Standards Update 2018-02 [Member] | Net Change Related to Defined Benefit Pension Plan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings					(2,955)
Accounting Standards Update 2018-02 [Member] | Accumulated Other Comprehensive (Loss) Income [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings					$ (3,921)
Accounting Standards Update 2017-12 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings				0
Accounting Standards Update 2017-12 [Member] | Net Unrealized Holding (Losses) Gains on Available-for-Sale Investment Securities [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings				0
Accounting Standards Update 2017-12 [Member] | Net Change Related to Derivative Used for Cash Flow Hedge [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings				83
Accounting Standards Update 2017-12 [Member] | Net Change Related to Defined Benefit Pension Plan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings				0
Accounting Standards Update 2017-12 [Member] | Accumulated Other Comprehensive (Loss) Income [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings				$ 83
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings			(11,047)
Accounting Standards Update 2016-13 | Net Unrealized Holding (Losses) Gains on Available-for-Sale Investment Securities [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings	[1]		237
Accounting Standards Update 2016-13 | Net Change Related to Derivative Used for Cash Flow Hedge [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings	[1]		0
Accounting Standards Update 2016-13 | Net Change Related to Defined Benefit Pension Plan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings	[1]		0
Accounting Standards Update 2016-13 | Accumulated Other Comprehensive (Loss) Income [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Cumulative effect on retained earnings	[1]		$ 237
[1]	(1) See Note 1, "Summary of Significant Accounting Policies - Accounting Pronouncements Adopted in 2020" for additional information.

Leases - Schedule of Operating

Leases - Schedule of Operating Lease Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 3,862	$ 3,789
Short-term lease cost	12	0
Variable lease cost	5	2
Total lease cost	3,879	3,791
Operating cash flows from leases	$ 3,693	$ 3,536
Weighted-average remaining lease term in years	13 years 10 months 24 days	14 years 9 months 18 days
Weighted-average discount rate	4.14%	4.24%

Leases - Schedule of Maturity o

Leases - Schedule of Maturity of Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
2021	$ 3,866
2022	3,871
2023	3,821
2024	3,691
2025	3,597
Thereafter	31,843
Total lease payments	50,689
Less: imputed interest	(12,999)
Present value of lease liabilities	$ 37,690	$ 37,617

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) $ in Thousands	Dec. 31, 2020USD ($)
Commitments And Contingencies [Line Items]
Reserve for sold mortgages	$ 309
Letter of Credit [Member]
Commitments And Contingencies [Line Items]
Reserve for off-balance sheet credits	498
Maximum [Member] | Letter of Credit [Member]
Commitments And Contingencies [Line Items]
Off-balance sheet risks, amount, liability	$ 70,600

Commitments and Contingencies_2

Commitments and Contingencies - Off-balance Sheet Financial Instruments (Detail) $ in Thousands	Dec. 31, 2020USD ($)
Commitments to Extend Credit [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Off-balance sheet risks, amount, liability	$ 1,443,141
Performance Letters Of Credit [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Off-balance sheet risks, amount, liability	34,215
Standby Letters of Credit [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Off-balance sheet risks, amount, liability	35,998
Other Letters Of Credit [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Off-balance sheet risks, amount, liability	$ 337

Commitments and Contingencies_3

Commitments and Contingencies - Summary of Future Minimum Contractual Payments With Third-Party Providers (Details) - Third-party providers [Member] $ in Thousands	Dec. 31, 2020USD ($)
Future minimum payments contractually due [Abstract]
2021	$ 7,831
2022	4,327
2023	519
2024	252
2025	45
Thereafter	5
Contractual Obligation	$ 12,979

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)instrument	Dec. 31, 2015USD ($)	Dec. 31, 2019USD ($)
Derivative [Line Items]
Loans receivable with fixed rates of interest maturity period		10 years
Loans receivable with fixed rates		$ 29,100
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional amount	$ 15,465		$ 16,286
Derivative liabilities	533		235
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional amount	833,671		312,262
Derivative liabilities	1,295		209
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional amount	$ 179		303
Loans receivable with fixed rates of interest maturity period	15 years
Derivative fixed interest rate	7.43%
Loans receivable fixed interest rate (percentage)	7.43%
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Derivative [Line Items]
Derivative liabilities	$ 8		14
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Notional amount		$ 20,000
Derivative fixed interest rate		2.10%
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months	234
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional amount	15,465		16,286
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Derivative [Line Items]
Derivative liabilities	533		235
Credit Risk Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional amount	$ 643,556		270,147
Derivative number of instruments held | instrument	94
Credit Risk Contract [Member] | Not Designated as Hedging Instrument [Member] | Customer [Member]
Derivative [Line Items]
Underlying derivative at fair value	$ 32,600
Credit Risk Contract [Member] | Not Designated as Hedging Instrument [Member] | Minimum [Member]
Derivative [Line Items]
Derivative remaining maturity	15 months
Credit Risk Contract [Member] | Not Designated as Hedging Instrument [Member] | Maximum [Member]
Derivative [Line Items]
Derivative remaining maturity	10 years
Credit Risk Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Derivative [Line Items]
Derivative liabilities	$ 535		$ 176
Underlying derivative at fair value	$ 535

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Derivatives Designated as Hedging Instruments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in other comprehensive income (loss)	$ (553)	$ (420)	$ 74
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount				$ 20,000
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	15,465	16,286
Derivative assets	0	0
Derivative liabilities	533	235
Net loss	(254)	17	71
Gain (loss) recognized in other comprehensive income (loss)	(421)	(185)
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	15,465	16,286
Gain (loss) recognized in other comprehensive income (loss)	(421)	(185)
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net loss	254	(22)	15
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Other Noninterest Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net loss	0	0	83
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Other Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative assets	0	0
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Other Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities	533	235
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value Hedging [Member] | Interest Income
Derivative Instruments, Gain (Loss) [Line Items]
Net loss	0	(5)	0
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value Hedging [Member] | Other Noninterest Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net loss	$ 0	$ 0	$ 3

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities - Derivatives Not Designated as Hedging Instruments (Detail) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Notional amount	$ 833,671	$ 312,262
Derivative assets	2,894	399
Derivative liabilities	1,295	209
Derivative instruments not designated as hedging instruments gain (loss), net	(7,495)	(1,390)	$ (14)
Interest Rate Swap [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Notional amount	179	303
Interest Rate Swap [Member] | Other Assets [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative assets	0	0
Interest Rate Swap [Member] | Other Liabilities [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative liabilities	8	14
Credit Risk Contract [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Notional amount	643,556	270,147
Credit Risk Contract [Member] | Other Noninterest Income [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative instruments not designated as hedging instruments gain (loss), net	5,733	1,350	262
Credit Risk Contract [Member] | Other Assets [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative assets	0	0
Credit Risk Contract [Member] | Other Liabilities [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative liabilities	535	176
Interest Rate Locks with Customers [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Notional amount	77,246	19,966
Interest Rate Locks with Customers [Member] | Mortgage Banking Activities [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative instruments not designated as hedging instruments gain (loss), net	(2,495)	91	37
Interest Rate Locks with Customers [Member] | Other Assets [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative assets	2,894	399
Interest Rate Locks with Customers [Member] | Other Liabilities [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative liabilities	0	0
Forward Loan Sale Commitments [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Notional amount	112,690	21,846
Forward Loan Sale Commitments [Member] | Mortgage Banking Activities [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative instruments not designated as hedging instruments gain (loss), net	733	(131)	$ 211
Forward Loan Sale Commitments [Member] | Other Assets [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative assets	0	0
Forward Loan Sale Commitments [Member] | Other Liabilities [Member]
Derivative Notional Amount And Fair Value By Balance Sheet Not Designated As Hedging Instrument [Line Items]
Derivative liabilities	$ 752	$ 19

Fair Value Disclosures - Additi

Fair Value Disclosures - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020USD ($)loanproperty	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Servicing rights carrying amount before valuation allowance	$ 6,500,000	$ 6,600,000
Servicing rights valuation allowance	87,000	0
Goodwill impairment	0	0	$ 0
Impairments to identifiable intangible assets	$ 0	0	0
Other real estate, number of properties transferred	2
Transfer of loans to other real estate owned	$ 8,405,000	71,000	$ 477,000
Number of properties sold | property	2
Proceeds from sale of real estate	$ 325,000
Net loss on sales of other real estate owned	106,000
Other real estate owned	7,400,000	516,000
Held for Investment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of impaired loans held for investment	31,500,000	38,100,000
Valuation allowance of impaired loans held for investment	585,000	2,100,000
Lease Financings [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value of impaired loans held for investment	$ 0	277,000
Valuation allowance of impaired loans held for investment		$ 0
Derivative Financial Instruments, Liabilities [Member] | Interest Rate Swap [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of loans with unrealized gain | loan	1
Unrealized gain on loans	$ 8,000
Commercial Loan [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of loans | loan	1

Fair Value Disclosures - Assets

Fair Value Disclosures - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Assets:
Investments in equity securities	$ 3,279	$ 2,623
Total assets	187	317
Liabilities:
Transfer into Level 3	10,000	0
Fair Value Measured on Recurring Basis [Member]
Assets:
Total available-for-sale securities	218,640	246,924
Investments in equity securities	3,279	2,623
Total assets	262,039	250,263
Liabilities:
Total liabilities	1,883	604
Fair Value Measured on Recurring Basis [Member] | Contingent Consideration Liability [Member]
Liabilities:
Derivative liabilities	55	160
Fair Value Measured on Recurring Basis [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative liabilities	541	249
Fair Value Measured on Recurring Basis [Member] | Credit Risk Contract [Member]
Liabilities:
Derivative liabilities	535	176
Fair Value Measured on Recurring Basis [Member] | Forward Loan Sale Commitments [Member]
Liabilities:
Derivative liabilities	752	19
Fair Value Measured on Recurring Basis [Member] | U.S. Government Corporations and Agencies [Member]
Assets:
Total available-for-sale securities		300
Fair Value Measured on Recurring Basis [Member] | State and Political Subdivisions [Member]
Assets:
Total available-for-sale securities	13,537	34,595
Fair Value Measured on Recurring Basis [Member] | Residential Mortgage-Backed Securities [Member]
Assets:
Total available-for-sale securities	114,163	118,460
Fair Value Measured on Recurring Basis [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Total available-for-sale securities	5,321	2,361
Fair Value Measured on Recurring Basis [Member] | Corporate Bonds [Member]
Assets:
Total available-for-sale securities	85,619	91,208
Fair Value Measured on Recurring Basis [Member] | Equity Securities [Member]
Assets:
Total available-for-sale securities	818	1,004
Fair Value Measured on Recurring Basis [Member] | Money Market Mutual Funds [Member]
Assets:
Total available-for-sale securities	2,461	1,619
Fair Value Measured on Recurring Basis [Member] | Loans [Member]
Assets:
Net loans and leases held for investment	187	317
Loans held for sale	37,039
Fair Value Measured on Recurring Basis [Member] | Interest Rate Locks with Customers [Member]
Assets:
Derivative assets	2,894	399
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member]
Assets:
Total available-for-sale securities	0	0
Investments in equity securities	3,279	2,623
Total assets	3,279	2,623
Liabilities:
Total liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Contingent Consideration Liability [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Credit Risk Contract [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Forward Loan Sale Commitments [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | U.S. Government Corporations and Agencies [Member]
Assets:
Total available-for-sale securities		0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | State and Political Subdivisions [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Residential Mortgage-Backed Securities [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Corporate Bonds [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Equity Securities [Member]
Assets:
Total available-for-sale securities	818	1,004
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Money Market Mutual Funds [Member]
Assets:
Total available-for-sale securities	2,461	1,619
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Loans [Member]
Assets:
Net loans and leases held for investment	0	0
Loans held for sale	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Interest Rate Locks with Customers [Member]
Assets:
Derivative assets	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member]
Assets:
Total available-for-sale securities	209,040	246,924
Investments in equity securities	0	0
Total assets	248,973	247,323
Liabilities:
Total liabilities	1,293	268
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Contingent Consideration Liability [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative liabilities	541	249
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Credit Risk Contract [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Forward Loan Sale Commitments [Member]
Liabilities:
Derivative liabilities	752	19
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | U.S. Government Corporations and Agencies [Member]
Assets:
Total available-for-sale securities		300
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | State and Political Subdivisions [Member]
Assets:
Total available-for-sale securities	13,537	34,595
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Residential Mortgage-Backed Securities [Member]
Assets:
Total available-for-sale securities	114,163	118,460
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Total available-for-sale securities	5,321	2,361
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Corporate Bonds [Member]
Assets:
Total available-for-sale securities	76,019	91,208
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Equity Securities [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Money Market Mutual Funds [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Loans [Member]
Assets:
Net loans and leases held for investment	0	0
Loans held for sale	37,039
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Interest Rate Locks with Customers [Member]
Assets:
Derivative assets	2,894	399
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member]
Assets:
Total available-for-sale securities	9,600	0
Investments in equity securities	0	0
Total assets	9,787	317
Liabilities:
Total liabilities	590	336
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Contingent Consideration Liability [Member]
Liabilities:
Derivative liabilities	55	160
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Credit Risk Contract [Member]
Liabilities:
Derivative liabilities	535	176
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Forward Loan Sale Commitments [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | U.S. Government Corporations and Agencies [Member]
Assets:
Total available-for-sale securities		0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | State and Political Subdivisions [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Residential Mortgage-Backed Securities [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Corporate Bonds [Member]
Assets:
Total available-for-sale securities	9,600	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Equity Securities [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Money Market Mutual Funds [Member]
Assets:
Total available-for-sale securities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Loans [Member]
Assets:
Net loans and leases held for investment	187	317
Loans held for sale	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Interest Rate Locks with Customers [Member]
Assets:
Derivative assets	$ 0	$ 0

Fair Value Disclosures - Level

Fair Value Disclosures - Level 3 Roll Forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Net Asset (Liability) Value [Roll Forward]
Beginning balance	$ 141	$ 27,436
Additions	(6,092)	(1,454)
Payments received	(123)	(1,461)
(Decrease) Increase in value	5,326	2,024
Transfer from Level 3	0	(26,404)
Transfer into Level 3	10,000	0
Ending balance	9,252	141
Derivative Financial Instruments, Liabilities [Member] | Credit Risk Contract [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(176)	(72)
Additions	(6,092)	(1,454)
Payments received	0	0
(Decrease) Increase in value	5,733	1,350
Transfer from Level 3	0	0
Transfer into Level 3	0	0
Ending balance	(535)	(176)
Corporate Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0	25,729
Additions	0	0
Payments received	0	0
(Decrease) Increase in value	(400)	675
Transfer from Level 3	0	(26,404)
Transfer into Level 3	10,000	0
Ending balance	9,600	0
Loans [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	317	1,779
Additions	0	0
Payments received	(123)	(1,461)
(Decrease) Increase in value	(7)	(1)
Transfer from Level 3	0	0
Transfer into Level 3	0	0
Ending balance	$ 187	$ 317

Fair Value Disclosures - Contin

Fair Value Disclosures - Contingent Consideration Liability Change in Amount (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Change in Contingent Consideration Liability [Roll Forward]
Beginning balance	$ 160	$ 259
Contingent consideration from new acquisition	0	0
Payment of contingent consideration	121	129
Adjustment of contingent consideration	16	30
Ending balance	55	160
Girard Partners [Member]
Change in Contingent Consideration Liability [Roll Forward]
Beginning balance	160	259
Contingent consideration from new acquisition	0	0
Payment of contingent consideration	121	129
Adjustment of contingent consideration	16	30
Ending balance	$ 55	$ 160

Fair Value Disclosures - Asse_2

Fair Value Disclosures - Assets Measured at Fair Value on Non-recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 7,400	$ 516
Total assets	187	317
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans held for investment	30,900	36,018
Impaired Leases Fair Value Disclosure		277
Other real estate owned	7,355	516
Total assets	38,255	36,811
Fair Value, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans held for investment	0	0
Impaired Leases Fair Value Disclosure		0
Other real estate owned	0	0
Total assets	0	0
Fair Value, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans held for investment	0	0
Impaired Leases Fair Value Disclosure		0
Other real estate owned	0	0
Total assets	0	0
Fair Value, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans held for investment	30,900	36,018
Impaired Leases Fair Value Disclosure		277
Other real estate owned	7,355	516
Total assets	$ 38,255	$ 36,811

Fair Value Disclosures - Asse_3

Fair Value Disclosures - Assets, Liabilities and Off-balance Sheet Items Not Measured at Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets:
Held-to-maturity securities	$ 156,325	$ 194,886
Total assets	187	317
Deposits:
Time deposits	563,775	606,010
Subordinated notes	183,515	94,818
Fair Value [Member]
Assets:
Cash and short-term interest-earning assets	219,858	125,128
Held-to-maturity securities	156,325	194,886
Loans held for sale		5,560
Net loans and leases held for investment	5,338,782	4,309,208
Servicing rights	6,783	9,340
Total assets	5,721,748	4,644,122
Deposits:
Demand and savings deposits, non-maturity	4,678,940	3,754,065
Time deposits	574,018	609,387
Total deposits	5,252,958	4,363,452
Short-term borrowings	17,906	18,680
Long-term debt	112,968	151,343
Subordinated notes	190,045	96,663
Total liabilities	5,573,877	4,630,138
Fair Value [Member] | Level 1 [Member]
Assets:
Cash and short-term interest-earning assets	219,858	125,128
Held-to-maturity securities	0	0
Loans held for sale		0
Net loans and leases held for investment	0	0
Servicing rights	0	0
Total assets	219,858	125,128
Deposits:
Demand and savings deposits, non-maturity	4,678,940	3,754,065
Time deposits	0	0
Total deposits	4,678,940	3,754,065
Short-term borrowings	0	0
Long-term debt	0	0
Subordinated notes	0	0
Total liabilities	4,678,940	3,754,065
Fair Value [Member] | Level 2 [Member]
Assets:
Cash and short-term interest-earning assets	0	0
Held-to-maturity securities	156,325	194,886
Loans held for sale		5,560
Net loans and leases held for investment	0	0
Servicing rights	0	0
Total assets	156,325	200,446
Deposits:
Demand and savings deposits, non-maturity	0	0
Time deposits	574,018	609,387
Total deposits	574,018	609,387
Short-term borrowings	17,906	18,680
Long-term debt	112,968	151,343
Subordinated notes	190,045	96,663
Total liabilities	894,937	876,073
Fair Value [Member] | Level 3 [Member]
Assets:
Cash and short-term interest-earning assets	0	0
Held-to-maturity securities	0	0
Loans held for sale		0
Net loans and leases held for investment	5,338,782	4,309,208
Servicing rights	6,783	9,340
Total assets	5,345,565	4,318,548
Deposits:
Demand and savings deposits, non-maturity	0	0
Time deposits	0	0
Total deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Subordinated notes	0	0
Total liabilities	0	0
Carrying Amount [Member]
Assets:
Cash and short-term interest-earning assets	219,858	125,128
Held-to-maturity securities	151,257	192,052
Federal Home Loan Bank, Federal Reserve Bank and other stock	28,183	28,254
Loans held for sale		5,504
Net loans and leases held for investment	5,192,710	4,314,893
Servicing rights	6,408	6,626
Total assets	5,598,416	4,672,457
Deposits:
Demand and savings deposits, non-maturity	4,678,940	3,754,065
Time deposits	563,775	606,010
Total deposits	5,242,715	4,360,075
Short-term borrowings	17,906	18,680
Long-term debt	110,000	150,098
Subordinated notes	183,515	94,818
Total liabilities	$ 5,554,136	$ 4,623,671

Restructuring and Related Act_2

Restructuring and Related Activities - Additional Information (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2020USD ($)center	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges | $	$ 1,400	$ 1,439	$ 0	$ 571
Phase 1 [Member]
Restructuring Cost and Reserve [Line Items]
Completion date		Jan. 29, 2021
Phase 2 [Member]
Restructuring Cost and Reserve [Line Items]
Completion date		Jun. 30, 2021
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, number of affected locations | center	8

Share Repurchase Plan - Additio

Share Repurchase Plan - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Equity [Abstract]
Share Repurchase Plan, shares repurchased during period, shares	185,072	0	150,000
Shares Repurchase Plan, shares repurchased during period, cost	$ 4		$ 3.6
Shares available to be repurchased under the plan	679,174

Regulatory Matters - Additional

Regulatory Matters - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2019	Jul. 31, 2013
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 Capital to Risk Weighted Assets	0.1076	0.1103
Total Capital to Risk Weighted Assets	0.1531	0.1378
Amount available for dividend distribution without prior approval from Regulatory Agency	$ 92.1
Percentage of Bank's capital and surplus of which extensions of credit to a single affiliate are limited	10.00%
Percentage of Bank's capital and surplus of which extensions of credit to all affiliates are limited	20.00%
Basel III New Requirements [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 capital minimum buffer percent			2.50%
Minimum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 Capital to Risk Weighted Assets	0.0850
Total Capital to Risk Weighted Assets	0.1050

Regulatory Matters - Schedule o

Regulatory Matters - Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations (Detail) $ in Thousands	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Total Capital (to Risk-Weighted Assets):
Total Capital (to Risk-Weighted Assets) actual, amount	$ 801,368	$ 655,010
Total Capital (to Risk-Weighted Assets) actual, ratio	0.1531	0.1378
Total Capital (to Risk-Weighted Assets) For Capital Adequacy, amount	$ 418,811	$ 380,276
Total Capital (to Risk-Weighted Assets) For Capital Adequacy, ratio	0.0800	0.0800
Total Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, amount	$ 523,513	$ 475,344
Total Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets):
Tier 1 Capital (to Risk-Weighted Assets) actual, Amount	$ 563,491	$ 524,137
Tier 1 Capital (to Risk-Weighted Assets) Actual, ratio	0.1076	0.1103
Tier 1 Capital (to Risk - Weighed Assets) For Capital Adequacy, amount	$ 314,108	$ 285,207
Tier 1 Capital (to Risk - Weighted Assets) For Capital Adequacy, ratio	0.0600	0.0600
Tier 1 Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, amount	$ 418,811	$ 380,276
Tier 1 Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, ratio	0.0800	0.0800
Tier 1 Common Capital (to Risk-Weighted Assets)
Tier One Common Risk Based Capital	$ 563,491	$ 524,137
Tier One Common Risk Based Capital To Risk Weighted Assets	10.76%	11.03%
Tier One Common Risk Based Capital Required For Capital Adequacy	$ 235,581	$ 213,905
Tier One Common Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets	4.50%	4.50%
Tier One Common Risk Based Capital Required To Be Well Capitalized	$ 340,284	$ 308,974
Tier One Common Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets	6.50%	6.50%
Tier 1 Capital (to Average Assets):
Tier 1 Capital (to Average Assets) actual, amount	$ 563,491	$ 524,137
Tier 1 Capital (to Average Assets) actual, ratio	0.0908	0.1002
Tier 1 Capital (to Average Assets) For Capital Adequacy, amount	$ 248,224	$ 209,330
Tier 1 Capital (to Average Assets) For Capital Adequacy, ratio	0.0400	0.0400
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, amount	$ 310,280	$ 261,663
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, ratio	0.0500	0.0500
Bank [Member]
Total Capital (to Risk-Weighted Assets):
Total Capital (to Risk-Weighted Assets) actual, amount	$ 632,183	$ 552,142
Total Capital (to Risk-Weighted Assets) actual, ratio	0.1212	0.1166
Total Capital (to Risk-Weighted Assets) For Capital Adequacy, amount	$ 417,416	$ 378,724
Total Capital (to Risk-Weighted Assets) For Capital Adequacy, ratio	0.0800	0.0800
Total Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, amount	$ 521,769	$ 473,405
Total Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets):
Tier 1 Capital (to Risk-Weighted Assets) actual, Amount	$ 569,821	$ 516,087
Tier 1 Capital (to Risk-Weighted Assets) Actual, ratio	0.1092	0.1090
Tier 1 Capital (to Risk - Weighed Assets) For Capital Adequacy, amount	$ 313,062	$ 284,043
Tier 1 Capital (to Risk - Weighted Assets) For Capital Adequacy, ratio	0.0600	0.0600
Tier 1 Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, amount	$ 417,416	$ 378,724
Tier 1 Capital (to Risk-Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, ratio	0.0800	0.0800
Tier 1 Common Capital (to Risk-Weighted Assets)
Tier One Common Risk Based Capital	$ 569,821	$ 516,087
Tier One Common Risk Based Capital To Risk Weighted Assets	10.92%	10.90%
Tier One Common Risk Based Capital Required For Capital Adequacy	$ 234,796	$ 213,032
Tier One Common Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets	4.50%	4.50%
Tier One Common Risk Based Capital Required To Be Well Capitalized	$ 339,150	$ 307,713
Tier One Common Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets	6.50%	6.50%
Tier 1 Capital (to Average Assets):
Tier 1 Capital (to Average Assets) actual, amount	$ 569,821	$ 516,087
Tier 1 Capital (to Average Assets) actual, ratio	0.0921	0.0990
Tier 1 Capital (to Average Assets) For Capital Adequacy, amount	$ 247,494	$ 208,589
Tier 1 Capital (to Average Assets) For Capital Adequacy, ratio	0.0400	0.0400
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, amount	$ 309,368	$ 260,737
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, ratio	0.0500	0.0500

Related Party Transactions - Su

Related Party Transactions - Summary of Activity for Loans to Related Parties (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Related Party Transactions [Roll Forward]
Beginning balance	$ 3,123
Additions	25
Amounts collected and other reductions	(1,633)
Ending balance	$ 1,515

Related Party Transactions - _2

Related Party Transactions - Summary of Transactions with Related Parties (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Commitments to Extend Credit [Member]
Related Party Transaction [Line Items]
Amount of transactions with related parties	$ 4,114
Deposits Received [Member]
Related Party Transaction [Line Items]
Amount of transactions with related parties	$ 25,118

Segment Reporting - Schedule of

Segment Reporting - Schedule of Segment Reporting (Details) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2020USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2020USD ($)segment		Dec. 31, 2019USD ($)		Dec. 31, 2018USD ($)
Segment Reporting [Abstract]
Number of reportable segments (in segments) | segment										3
Segment Reporting Information [Line Items]
Interest income		$ 51,334	$ 50,612	$ 49,980	$ 52,019	$ 53,369	$ 54,300	$ 54,060	$ 52,364	$ 203,945		$ 214,093		$ 190,488
Interest expense		6,813	6,758	6,462	9,551	10,940	11,655	11,425	10,841	29,584		44,861		32,426
Net interest income		44,521	43,854	43,518	42,468	42,429	42,645	42,635	41,523	174,361	[1]	169,232	[1]	158,062	[1]
Provision for credit losses										40,794		8,511		20,310
Noninterest income		20,139	21,805	18,000	18,384	16,170	16,599	16,356	16,297	78,328		65,422		60,173
Noninterest expense										154,998		146,090		137,239
Intersegment (revenue) expense*										0		0		0
Income before income taxes		31,647	23,197	1,821	232	18,894	21,444	20,137	19,578	56,897		80,053		60,686
Income tax expense		5,773	5,078	(264)	(606)	3,384	3,782	3,669	3,499	9,981		14,334		10,143
Net income		25,874	$ 18,119	$ 2,085	$ 838	15,510	$ 17,662	$ 16,468	$ 16,079	46,916		65,719		50,543
Total assets		6,336,496				5,380,924				6,336,496		5,380,924
Net capital expenditures										3,749		2,446		3,367
Banking [Member]
Segment Reporting Information [Line Items]
Interest income										203,904		214,020		190,425
Interest expense										22,822		39,818		27,383
Net interest income	[1]									181,082		174,202		163,042
Provision for credit losses										40,794		8,511		20,310
Noninterest income										37,910		23,748		20,815
Noninterest expense										126,131		116,283		108,657
Intersegment (revenue) expense*										(1,103)		(1,204)		(1,113)
Income before income taxes										53,170		74,360		56,003
Income tax expense										9,153		13,859		9,085
Net income										44,017		60,501		46,918
Total assets		6,234,336				5,282,505				6,234,336		5,282,505
Net capital expenditures										3,646		1,886		3,091
Wealth Management [Member]
Segment Reporting Information [Line Items]
Interest income										8		41		32
Interest expense										0		0		0
Net interest income	[1]									8		41		32
Provision for credit losses										0		0		0
Noninterest income										23,814		23,946		23,179
Noninterest expense										15,720		15,799		15,398
Intersegment (revenue) expense*										627		688		612
Income before income taxes										7,475		7,500		7,201
Income tax expense										1,525		1,392		1,913
Net income										5,950		6,108		5,288
Total assets		48,646				44,591				48,646		44,591
Net capital expenditures										24		84		45
Insurance [Member]
Segment Reporting Information [Line Items]
Interest income										0		0		0
Interest expense										0		0		0
Net interest income	[1]									0		0		0
Provision for credit losses										0		0		0
Noninterest income										16,682		17,318		16,442
Noninterest expense										12,142		12,477		12,893
Intersegment (revenue) expense*										476		516		501
Income before income taxes										4,064		4,325		3,048
Income tax expense										858		443		752
Net income										3,206		3,882		2,296
Total assets		35,906				34,291				35,906		34,291
Net capital expenditures										46		104		30
Other Segments [Member]
Segment Reporting Information [Line Items]
Interest income										33		32		31
Interest expense										6,762		5,043		5,043
Net interest income	[1]									(6,729)		(5,011)		(5,012)
Provision for credit losses										0		0		0
Noninterest income										(78)		410		(263)
Noninterest expense										1,005		1,531		291
Intersegment (revenue) expense*										0		0		0
Income before income taxes										(7,812)		(6,132)		(5,566)
Income tax expense										(1,555)		(1,360)		(1,607)
Net income										(6,257)		(4,772)		(3,959)
Total assets		$ 17,608				$ 19,537				17,608		19,537
Net capital expenditures										$ 33		$ 372		$ 201
[1]	Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of FASB ASC 606 "Revenue from Contracts with Customers" (FASB ASC 606). Noninterest income streams that are out of scope of FASB ASC 606 include bank owned life insurance income, sales of investment securities and mortgage banking activities.

Revenue From Contracts with C_3

Revenue From Contracts with Customers (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income		$ 44,521	$ 43,854	$ 43,518	$ 42,468	$ 42,429	$ 42,645	$ 42,635	$ 41,523	$ 174,361	[1]	$ 169,232	[1]	$ 158,062	[1]
Insurance commission and fee income										16,087		16,571		15,658
Bank owned life insurance income	[1]									2,940		3,179		3,174
Net gain on sales of investment securities	[1]									871		54		10
Net gain on mortgage banking activities	[1]									16,442		3,946		3,125
Other income	[2]									5,953		2,619		262
Noninterest income		$ 20,139	$ 21,805	$ 18,000	$ 18,384	$ 16,170	$ 16,599	$ 16,356	$ 16,297	78,328		65,422		60,173
Trust fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										7,703		7,826		7,882
Service charges on deposit accounts
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										4,845		5,946		5,632
Investment advisory commission and fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										15,944		15,940		15,098
Other service fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income	[2]									7,543		9,341		9,332
Banking [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income	[1]									181,082		174,202		163,042
Insurance commission and fee income										0		0		0
Bank owned life insurance income	[1]									2,831		2,849		3,284
Net gain on sales of investment securities	[1]									871		54		10
Net gain on mortgage banking activities	[1]									16,442		3,946		3,125
Other income	[2]									6,140		2,539		417
Noninterest income										37,910		23,748		20,815
Banking [Member] | Trust fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										0		0		0
Banking [Member] | Service charges on deposit accounts
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										4,845		5,946		5,632
Banking [Member] | Investment advisory commission and fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										0		0		0
Banking [Member] | Other service fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income	[2]									6,781		8,414		8,347
Wealth Management [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income	[1]									8		41		32
Insurance commission and fee income										0		0		0
Bank owned life insurance income	[1]									0		0		0
Net gain on sales of investment securities	[1]									0		0		0
Net gain on mortgage banking activities	[1]									0		0		0
Other income	[2]									0		0		0
Noninterest income										23,814		23,946		23,179
Wealth Management [Member] | Trust fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										7,703		7,826		7,882
Wealth Management [Member] | Service charges on deposit accounts
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										0		0		0
Wealth Management [Member] | Investment advisory commission and fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										15,944		15,940		15,098
Wealth Management [Member] | Other service fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income	[2]									167		180		199
Insurance [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income	[1]									0		0		0
Insurance commission and fee income										16,087		16,571		15,658
Bank owned life insurance income	[1]									0		0		0
Net gain on sales of investment securities	[1]									0		0		0
Net gain on mortgage banking activities	[1]									0		0		0
Other income	[2]									0		0		(2)
Noninterest income										16,682		17,318		16,442
Insurance [Member] | Trust fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										0		0		0
Insurance [Member] | Service charges on deposit accounts
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										0		0		0
Insurance [Member] | Investment advisory commission and fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										0		0		0
Insurance [Member] | Other service fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income	[2]									595		747		786
Other Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income	[1]									(6,729)		(5,011)		(5,012)
Insurance commission and fee income										0		0		0
Bank owned life insurance income	[1]									109		330		(110)
Net gain on sales of investment securities	[1]									0		0		0
Net gain on mortgage banking activities	[1]									0		0		0
Other income	[2]									(187)		80		(153)
Noninterest income										(78)		410		(263)
Other Segments [Member] | Trust fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										0		0		0
Other Segments [Member] | Service charges on deposit accounts
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										0		0		0
Other Segments [Member] | Investment advisory commission and fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income										0		0		0
Other Segments [Member] | Other service fee income
Segment Reporting, Revenue Reconciling Item [Line Items]
Noninterest income	[2]									$ 0		$ 0		$ 0
[1]	Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of FASB ASC 606 "Revenue from Contracts with Customers" (FASB ASC 606). Noninterest income streams that are out of scope of FASB ASC 606 include bank owned life insurance income, sales of investment securities and mortgage banking activities.
[2]	Other service fee income and other income include certain items that are in scope and certain items that are out of scope of FASB ASC 606 are described further in the following paragraphs.

Condensed Financial Informati_3

Condensed Financial Information - Parent Company Only - Schedule of Condensed Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets:
Cash and due from banks	$ 62,555	$ 50,571
Interest-earning deposits with other banks	157,303	74,557
Cash and cash equivalents	219,858	125,128	$ 109,420	$ 75,409
Investments in subsidiaries, at equity in net assets:
Other assets	3,291	680
Total assets	6,336,496	5,380,924
Liabilities:
Subordinated notes	183,515	94,818
Other liabilities	52,198	44,514
Total liabilities	5,644,024	4,705,802
Shareholders' equity:	692,472	675,122	624,133	603,374
Total liabilities and shareholders' equity	6,336,496	5,380,924
Parent Company [Member]
Assets:
Cash and due from banks	154,422	82,673
Interest-earning deposits with other banks	211	177
Cash and cash equivalents	154,633	82,850	$ 79,042	$ 73,756
Investments in securities	818	1,004
Investments in subsidiaries, at equity in net assets:
Bank	719,146	685,387
Non-banks	0	0
Other assets	16,579	18,355
Total assets	891,176	787,596
Liabilities:
Dividends payable	0	5,865
Subordinated notes	183,515	94,818
Other liabilities	15,189	11,791
Total liabilities	198,704	112,474
Shareholders' equity:	692,472	675,122
Total liabilities and shareholders' equity	$ 891,176	$ 787,596

Condensed Financial Informati_4

Condensed Financial Information - Parent Company Only - Schedule of Condensed Income Statement (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statements of Income
Interest expense	$ 6,813	$ 6,758	$ 6,462	$ 9,551	$ 10,940	$ 11,655	$ 11,425	$ 10,841	$ 29,584	$ 44,861	$ 32,426
Income before income taxes	31,647	23,197	1,821	232	18,894	21,444	20,137	19,578	56,897	80,053	60,686
Income tax expense	5,773	5,078	(264)	(606)	3,384	3,782	3,669	3,499	9,981	14,334	10,143
Equity in undistributed income of subsidiaries:
Net income	$ 25,874	$ 18,119	$ 2,085	$ 838	$ 15,510	$ 17,662	$ 16,468	$ 16,079	46,916	65,719	50,543
Parent Company [Member]
Statements of Income
Dividends from Bank									9,746	29,681	22,359
Dividends from non-bank									0	0	0
Other income									21,803	23,943	26,631
Total operating income									31,549	53,624	48,990
Interest expense									6,762	5,043	5,043
Operating expenses									22,852	25,032	27,155
Income before income taxes									1,935	23,549	16,792
Income tax expense									(1,555)	(1,360)	(1,607)
Income before equity in undistributed income of subsidiaries									3,490	24,909	18,399
Equity in undistributed income of subsidiaries:
Bank									43,426	40,810	32,144
Non-banks									0	0	0
Net income									$ 46,916	$ 65,719	$ 50,543

Condensed Financial Informati_5

Condensed Financial Information - Parent Company Only - Schedule of Condensed Cash Flow Statement (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income		$ 25,874	$ 18,119	$ 2,085	$ 838	$ 15,510	$ 17,662	$ 16,468	$ 16,079	$ 46,916	$ 65,719	$ 50,543
Adjustments to reconcile net income to net cash provided by operating activities:
Bank owned life insurance income	[1]									(2,940)	(3,179)	(3,174)
Depreciation of premises and equipment										4,780	5,277	5,581
Stock-based compensation										1,480	2,348	2,557
Contributions to pension and other postretirement benefit plans										(270)	(266)	(3,264)
Decrease in other assets										(2,835)	(2,332)	4,547
Increase in accrued interest payable and other liabilities										8,608	1,409	6,540
Net cash provided by operating activities										51,179	73,148	86,006
Cash flows from investing activities:
Net cash used in investing activities										(867,392)	(343,369)	(431,318)
Cash flows from financing activities:
Proceeds from issuance of subordinated notes										100,000	0	0
Purchases of treasury stock										(4,452)	(2,045)	(5,984)
Stock issued under dividend reinvestment and employee stock purchase plans										2,369	2,233	2,295
Proceeds from exercise of stock options										384	1,203	1,131
Cash dividends paid										(17,536)	(23,435)	(23,495)
Net cash provided by financing activities										910,943	285,929	379,323
Cash and cash equivalents at beginning of year					125,128				109,420	125,128	109,420	75,409
Cash and cash equivalents at end of year		219,858				125,128				219,858	125,128	109,420
Cash paid during the year for:
Interest										29,233	44,479	30,875
Income tax, net of refunds received										17,316	17,171	2,022
Parent Company [Member]
Cash flows from operating activities:
Net income										46,916	65,719	50,543
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income of subsidiaries										(43,426)	(40,810)	(32,144)
Bank owned life insurance income										(108)	(331)	109
Depreciation of premises and equipment										320	328	386
Stock-based compensation										1,480	2,348	2,557
Contributions to pension and other postretirement benefit plans										(270)	(266)	(3,264)
Decrease in other assets										2,321	554	14,205
Increase in accrued interest payable and other liabilities										(4,631)	(1,319)	(865)
Net cash provided by operating activities										2,602	26,223	31,527
Cash flows from investing activities:
Other, net										(32)	(371)	(188)
Net cash used in investing activities										(32)	(371)	(188)
Cash flows from financing activities:
Proceeds from issuance of subordinated notes										98,448	0	0
Repayments of Subordinated Debt										(10,000)	0	0
Purchases of treasury stock										(4,452)	(2,045)	(5,984)
Stock issued under dividend reinvestment and employee stock purchase plans										2,369	2,233	2,295
Proceeds from exercise of stock options										384	1,203	1,131
Cash dividends paid										(17,536)	(23,435)	(23,495)
Net cash provided by financing activities										69,213	(22,044)	(26,053)
Net increase in cash and cash equivalents										71,783	3,808	5,286
Cash and cash equivalents at beginning of year					$ 82,850				$ 79,042	82,850	79,042	73,756
Cash and cash equivalents at end of year		$ 154,633				$ 82,850				154,633	82,850	79,042
Cash paid during the year for:
Interest										5,121	4,800	4,800
Income tax, net of refunds received										$ 16,172	$ 16,460	$ 643
[1]	Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of FASB ASC 606 "Revenue from Contracts with Customers" (FASB ASC 606). Noninterest income streams that are out of scope of FASB ASC 606 include bank owned life insurance income, sales of investment securities and mortgage banking activities.

Quarterly Financial Data (una_3

Quarterly Financial Data (unaudited) - Schedule of Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 51,334	$ 50,612	$ 49,980	$ 52,019	$ 53,369	$ 54,300	$ 54,060	$ 52,364	$ 203,945		$ 214,093		$ 190,488
Interest expense	6,813	6,758	6,462	9,551	10,940	11,655	11,425	10,841	29,584		44,861		32,426
Net interest income	44,521	43,854	43,518	42,468	42,429	42,645	42,635	41,523	174,361	[1]	169,232	[1]	158,062	[1]
(Reversal of provision) provision for credit losses	(8,721)	3,935	23,737	21,843	2,225	1,533	2,073	2,680	39,439		8,518		20,310
Net interest income after provision for credit losses	53,242	39,919	19,781	20,625	40,204	41,112	40,562	38,843	133,567		160,721		137,752
Noninterest income	20,139	21,805	18,000	18,384	16,170	16,599	16,356	16,297	78,328		65,422		60,173
Total noninterest expense	41,734	38,527	35,960	38,777	37,480	36,267	36,781	35,562	154,998		146,090		137,239
Income before income taxes	31,647	23,197	1,821	232	18,894	21,444	20,137	19,578	56,897		80,053		60,686
Income tax expense	5,773	5,078	(264)	(606)	3,384	3,782	3,669	3,499	9,981		14,334		10,143
Net income	$ 25,874	$ 18,119	$ 2,085	$ 838	$ 15,510	$ 17,662	$ 16,468	$ 16,079	$ 46,916		$ 65,719		$ 50,543
Weighted average shares outstanding - basic earnings per share	29,237	29,189	29,149	29,218	29,232	29,211	29,181	29,146	29,198		29,193		29,177
Weighted average shares outstanding - diluted earnings per share	29,309	29,217	29,164	29,283	29,313	29,285	29,243	29,205	29,268		29,261		29,259
Net income per share:
Basic (in dollars per share)	$ 0.88	$ 0.62	$ 0.07	$ 0.03	$ 0.53	$ 0.60	$ 0.56	$ 0.55	$ 1.60		$ 2.24		$ 1.72
Diluted (in dollars per share)	0.88	0.62	0.07	0.03	0.53	0.60	0.56	0.55	1.60		2.24		1.72
Dividends declared per share	$ 0	$ 0.20	$ 0.20	$ 0.20	$ 0.20	$ 0.20	$ 0.20	$ 0.20	$ 0.60		$ 0.80		$ 0.80
[1]	Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of FASB ASC 606 "Revenue from Contracts with Customers" (FASB ASC 606). Noninterest income streams that are out of scope of FASB ASC 606 include bank owned life insurance income, sales of investment securities and mortgage banking activities.

Uncategorized Items - uvsp-2020

Label	Element	Value
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	$ 2,557,000
AOCI Attributable to Parent [Member]
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	0
Additional Paid-in Capital [Member]
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2,557,000
Retained Earnings [Member]
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	0
Treasury Stock [Member]
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	0
Common Stock [Member]
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	$ 0