Independent Bank (INDB) 10-Q 3 Nov 22 2022 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2022	Nov. 03, 2022	Dec. 31, 2021
Entity Information [Line Items]
Document Transition Report	false
Common Stock, Shares, Outstanding	45,634,626		47,349,778
Security Exchange Name	NASDAQ
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	INDB
Entity Incorporation, State or Country Code	MA
Entity File Number	1-9047
Document Quarterly Report	true
Entity Registrant Name	Independent Bank Corp.
Entity Tax Identification Number	04-2870273
Entity Central Index Key	0000776901
Document Type	10-Q
Document Period End Date	Sep. 30, 2022
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Address, Address Line One	2036 Washington Street,
Entity Address, City or Town	Hanover,
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02339
Entity Shell Company	false
City Area Code	781
Local Phone Number	878-6100
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding		45,642,245
Mailing Address [Member]
Entity Information [Line Items]
Entity Address, Address Line One	288 Union Street,
Entity Address, City or Town	Rockland,
Entity Address, State or Province	MA

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($)	Sep. 30, 2022		Dec. 31, 2021
Assets
Cash and due from banks	$ 172,615,000		$ 141,581,000
Interest-earning deposits with banks	763,681,000		2,099,103,000
Securities
Trading	3,538,000		3,720,000
Equity	20,439,000		23,173,000
Available for sale (amortized cost $1,605,913 and $1,583,736)	1,425,511,000		1,571,148,000
Held to maturity (fair value $1,509,985 and $1,064,133)	1,697,635,000		1,066,818,000
Total securities	3,147,123,000		2,664,859,000
Loans held for sale (at fair value)	5,100,000		24,679,000
Loans
Total loans	13,700,350,000		13,587,286,000
Less: allowance for credit losses	(147,313,000)	[1]	(146,922,000)
Net loans	13,553,037,000		13,440,364,000
Federal Home Loan Bank stock	5,218,000		11,407,000
Bank premises and equipment, net	198,408,000		195,590,000
Goodwill	985,072,000		985,072,000
Other intangible assets	26,934,000		32,772,000
Cash surrender value of life insurance policies	293,126,000		289,304,000
Other assets	552,955,000		538,674,000
Total assets	19,703,269,000		20,423,405,000
Deposits
Noninterest-bearing demand deposits	5,622,260,000		5,479,503,000
Savings and interest checking accounts	6,094,493,000		6,350,016,000
Money market	3,443,622,000		3,556,375,000
Time certificates of deposit	1,178,619,000		1,531,150,000
Total deposits	16,338,994,000		16,917,044,000
Borrowings
Federal Home Loan Bank borrowings	643,000		25,667,000
Long-term Debt	0		14,063,000
Junior Subordinated Notes	62,855,000		62,853,000
Subordinated Debt	49,862,000		49,791,000
Total borrowings	113,360,000		152,374,000
Other liabilities	433,714,000		335,538,000
Total liabilities	16,886,068,000		17,404,956,000
Commitments and contingencies	0		0
Stockholders' equity
Preferred stock, $0.01 par value, authorized: 1,000,000 shares, outstanding: none	0		0
Common stock, $0.01 par value, authorized: 75,000,000 shares, issued and outstanding: 45,634,626 shares at September 30, 2022 and 47,349,778 shares at December 31, 2021 (includes 136,904 and 135,273 shares of unvested participating restricted stock awards, respectively)	454,000		472,000
Value of shares held in rabbi trust at cost: 82,617 shares at September 30, 2022 and 82,565 shares at December 31, 2021	(3,239,000)		(3,146,000)
Deferred compensation and other retirement benefit obligations	3,239,000		3,146,000
Additional paid in capital	2,113,313,000		2,249,078,000
Retained earnings	882,503,000		766,716,000
Accumulated other comprehensive income (loss), net of tax	(179,069,000)		2,183,000
Total stockholders’ equity	2,817,201,000		3,018,449,000
Total liabilities and stockholders' equity	19,703,269,000		20,423,405,000
Commercial And Industrial [Member]
Loans
Total loans	1,548,349,000		1,563,279,000
Less: allowance for credit losses	(20,169,000)	[1]	(14,402,000)
Commercial Real Estate [Member]
Loans
Total loans	7,677,917,000		7,992,344,000
Less: allowance for credit losses	(80,036,000)	[1]	(83,486,000)
Construction Loans [Member]
Loans
Total loans	1,185,157,000		1,165,457,000
Less: allowance for credit losses	(11,419,000)	[1]	(12,316,000)
Small Business [Member]
Loans
Total loans	209,567,000		193,189,000
Less: allowance for credit losses	(2,624,000)	[1]	(3,508,000)
Residential Real Estate [Member]
Loans
Total loans	1,959,254,000		1,604,686,000
Less: allowance for credit losses	(20,602,000)	[1]	(14,484,000)
Home Equity Loan [Member]
Loans
Less: allowance for credit losses	(11,651,000)	[1]	(17,986,000)
Consumer Portfolio Segment [Member]
Loans
Total loans	32,936,000		28,720,000
Less: allowance for credit losses	(812,000)	[1]	(740,000)
Senior Lien [Member] | Home Equity Loan [Member]
Loans
Total loans	578,405,000		589,550,000
Junior Lien [Member] | Home Equity Loan [Member]
Loans
Total loans	$ 508,765,000		$ 450,061,000
[1]Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $42.7 million and $36.7 million as of September 30, 2022 and September 30, 2021, respectively.

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Held to Maturity, Fair Value, Total	$ 1,509,985	$ 1,064,133
Debt Securities, Available-for-sale, Amortized Cost	$ 1,605,913	$ 1,583,736
Preferred Stock, par value	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	1,000,000	1,000,000
Preferred Stock, shares outstanding	0	0
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	75,000,000	75,000,000
Common Stock, Shares, Outstanding	45,634,626	47,349,778
Common Stock, Shares, Issued	45,634,626	47,349,778
Common Stock, unvested restricted Stock awards	136,904	135,273
Shares Held in Rabbi Trust	82,617	82,565
Junior Subordinated Debt [Member]
Unamortized Debt Issuance Expense	$ 33	$ 35
Subordinated Debt [Member]
Unamortized Debt Issuance Expense	$ 138	$ 209

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Business Combination, Acquisition Related Costs	$ 0	$ 1,943	$ 7,100	$ 3,674
Interest income
Interest and fees on loans	150,157	84,212	413,770	265,409
Interest Income, Securities, Operating, Taxable	13,243	7,792	34,567	21,603
Nontaxable interest and dividends on securities	1	4	4	14
Interest on loans held for sale	51	193	150	675
Interest on federal funds sold and short-term investments	6,519	815	10,222	1,654
Total interest and dividend income	169,971	93,016	458,713	289,355
Interest expense
Interest on deposits	6,109	1,633	10,327	6,361
Interest on borrowings	1,261	1,292	3,492	3,965
Total interest expense	7,370	2,925	13,819	10,326
Net interest income	162,601	90,091	444,894	279,029
Provision for (release of) credit losses	3,000	(10,000)	1,000	(17,500)
Net interest income after provision for credit losses	159,601	100,091	443,894	296,529
Noninterest income
Deposit account fees	6,261	4,298	17,582	11,704
Interchange and ATM fees	4,331	3,441	11,967	9,229
Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions	8,436	9,174	26,438	26,350
Mortgage banking income	585	2,825	2,989	11,270
Bank Owned Life Insurance Income	1,883	1,596	5,549	4,508
Gain Realized on Life Insurance Policies	(477)	0	(600)	(258)
Loan level derivative income	471	586	1,511	875
Other noninterest income	5,751	4,537	15,729	12,476
Total noninterest income	28,195	26,457	82,365	76,670
Noninterest expenses
Salaries and employee benefits	52,708	42,235	150,957	124,759
Occupancy and equipment expenses	12,316	8,564	37,255	26,543
Data processing & facilities management	2,259	1,673	6,878	5,024
Business Combination, Acquisition Related Costs	0	1,943	7,100	3,674
Software Maintenance	2,497	2,018	7,706	5,903
Amortization of Intangible Assets	1,898	1,310	5,801	4,037
FDIC assessment	1,677	980	5,225	2,805
Debit card expense	1,936	1,347	5,562	3,693
Professional Fees	2,547	1,560	7,057	5,443
Other noninterest expenses	14,890	10,789	45,249	33,522
Total noninterest expenses	92,728	72,419	278,790	215,403
Income before income taxes	95,068	54,129	247,469	157,796
Current Federal, State and Local, Tax Expense (Benefit)	23,171	14,122	60,699	38,506
Net income	$ 71,897	$ 40,007	$ 186,770	$ 119,290
Basic earnings per share (in dollars per share)	$ 1.57	$ 1.21	$ 4.01	$ 3.61
Diluted earnings per share (in dollars per share)	$ 1.57	$ 1.21	$ 4	$ 3.61
Weighted average common shares (basic) (in shares)	45,839,555	33,043,716	46,618,209	33,024,386
Common shares equivalents (in shares)	16,856	15,554	17,221	18,238
Weighted average common shares (diluted) (in shares)	45,856,411	33,059,270	46,635,430	33,042,624
Retained Earnings [Member]
Noninterest expenses
Net income	$ 71,897	$ 40,007	$ 186,770	$ 119,290
Cash dividends declared per common share (in dollars per share)	$ 0.51	$ 0.48	$ 1.53	$ 1.44

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income		$ 71,897	$ 40,007	$ 186,770	$ 119,290
Other comprehensive income (loss), net of tax
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax		(42,582)	(7,897)	(128,872)	(11,878)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		(27,144)	(3,383)	(52,743)	(11,559)
Net change in other comprehensive income for defined benefit postretirement plans	[1]	121	280	363	1,309
Total other comprehensive loss		(69,605)	(11,000)	(181,252)	(22,128)
Total comprehensive income		$ 2,292	$ 29,007	$ 5,518	$ 97,162
[1] The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 14 "Employee Benefit Plans" within the Notes to the Consolidated Financial Statements included in Item 8 of the Company's 2021 Form 10-K.

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock Outstanding	Common Stock	Value of Shares Held in Rabbi Trust at Cost	Deferred Compensation and Other Retirement Benefit Obligations	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		32,965,692
Net income	$ 119,290						$ 119,290
Other comprehensive income	(22,128)							$ (22,128)
Cash dividends declared per common share (in dollars per share)							$ 1.44
Common dividend declared	(47,572)						$ (47,572)
Proceeds from exercise of stock options, net of cash paid		4,744
Proceeds from exercise of stock options, net of cash paid			$ 0
Stock Repurchased During Period, Value, as a result of Stock Options Exercised	(57)					$ (57)
Stock based compensation	3,467					3,467
Restricted stock awards issued, net of awards surrendered		53,795
Restricted stock awards issued, net of awards surrendered	(1,246)		1			(1,247)
Shares issued under direct stock purchase plan		19,581
Shares issued under direct stock purchase plan	1,515		0			1,515
Increase (Decrease) in Deferred Compensation and Other Retirement Benefits				$ (91)	$ 91
Increase (Decrease) in Deferred Compensation	0
Period End Balance at Sep. 30, 2021	1,755,954		329	(3,157)	3,157	949,316	787,742	18,567
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		33,037,859
Net income	40,007						$ 40,007
Other comprehensive income	(11,000)							(11,000)
Cash dividends declared per common share (in dollars per share)							$ 0.48
Common dividend declared	(15,861)						$ (15,861)
Stock based compensation	707					707
Restricted stock awards issued, net of awards surrendered		(763)
Restricted stock awards issued, net of awards surrendered	(3)					(3)
Shares issued under direct stock purchase plan		6,716
Shares issued under direct stock purchase plan	482					482
Increase (Decrease) in Deferred Compensation and Other Retirement Benefits				(41)	41
Increase (Decrease) in Deferred Compensation	0
Period End Balance at Sep. 30, 2021	$ 1,755,954		329	(3,157)	3,157	949,316	787,742	18,567
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		33,043,812
Common Stock, Shares, Outstanding	47,349,778	47,349,778
Net income	$ 186,770						$ 186,770
Other comprehensive income	(181,252)							(181,252)
Cash dividends declared per common share (in dollars per share)							$ 1.53
Common dividend declared	(70,983)						$ (70,983)
Stock based compensation	3,483					3,483
Restricted stock awards issued, net of awards surrendered		50,096
Restricted stock awards issued, net of awards surrendered	(1,085)					(1,085)
Shares issued under direct stock purchase plan		21,717
Shares issued under direct stock purchase plan	1,765					1,765
Stock Repurchased During Period, Shares		(1,786,965)
Stock Repurchased During Period, Value	(139,946)		(18)			(139,928)
Increase (Decrease) in Deferred Compensation and Other Retirement Benefits				(93)	93
Increase (Decrease) in Deferred Compensation	0
Period End Balance at Sep. 30, 2022	2,817,201		454	(3,239)	3,239	2,113,313	882,503	(179,069)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding		46,069,761
Net income	71,897						$ 71,897
Other comprehensive income	(69,605)							(69,605)
Cash dividends declared per common share (in dollars per share)							$ 0.51
Common dividend declared	(23,251)						$ (23,251)
Stock based compensation	1,017					1,017
Restricted stock awards issued, net of awards surrendered		296
Restricted stock awards issued, net of awards surrendered	0
Shares issued under direct stock purchase plan		7,541
Shares issued under direct stock purchase plan	606					606
Stock Repurchased During Period, Shares		(442,972)
Stock Repurchased During Period, Value	(34,648)		(5)			(34,643)
Increase (Decrease) in Deferred Compensation and Other Retirement Benefits				(43)	43
Increase (Decrease) in Deferred Compensation	0
Period End Balance at Sep. 30, 2022	$ 2,817,201		$ 454	$ (3,239)	$ 3,239	$ 2,113,313	$ 882,503	$ (179,069)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding	45,634,626	45,634,626

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Common Stock, Shares, Outstanding	45,634,626		45,634,626			47,349,778
Stockholders' Equity Attributable to Parent	$ 2,817,201	$ 1,755,954	$ 2,817,201	$ 1,755,954	$ 2,871,185	$ 3,018,449	$ 1,741,622	$ 1,702,685
Held In Rabbi Trust At Cost [Member]
Stockholders' Equity Attributable to Parent	$ (3,239)	$ (3,157)	$ (3,239)	$ (3,157)	(3,196)	(3,146)	(3,116)	(3,066)
Retained Earnings
Cash dividends declared per common share (in dollars per share)	$ 0.51	$ 0.48	$ 1.53	$ 1.44
Stockholders' Equity Attributable to Parent	$ 882,503	$ 787,742	$ 882,503	$ 787,742	833,857	766,716	763,596	716,024
Deferred Compensation, Share-based Payments [Member]
Stockholders' Equity Attributable to Parent	3,239	3,157	3,239	3,157	3,196	3,146	3,116	3,066
AOCI Attributable to Parent [Member]
Stockholders' Equity Attributable to Parent	(179,069)	18,567	(179,069)	18,567	(109,464)	2,183	29,567	40,695
Common Stock [Member]
Stockholders' Equity Attributable to Parent	454	329	454	329	459	472	329	328
Additional Paid-in Capital [Member]
Stockholders' Equity Attributable to Parent	$ 2,113,313	$ 949,316	$ 2,113,313	$ 949,316	$ 2,146,333	$ 2,249,078	$ 948,130	$ 945,638
Common Class A [Member]
Common Stock, Shares, Outstanding	45,634,626	33,043,812	45,634,626	33,043,812	46,069,761	47,349,778	33,037,859	32,965,692

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 186,770,000	$ 119,290,000
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	29,528,000	24,586,000
Change In Unamortized Net Loan Costs And Premiums	(6,397,000)	(17,217,000)
Accretion of acquired loans	(65,000)	(5,349,000)
Provision for (release of) credit losses	1,000,000	(17,500,000)
Deferred income tax expense	271,000	271,000
Equity Securities, FV-NI, Gain (Loss)	2,819,000	(695,000)
Gain (Loss) on Disposition of Property Plant Equipment	217,000	32,000
Sale and Leaseback Transaction, Gain (Loss), Net	433,000	433,000
Stock based compensation	3,483,000	3,467,000
Increase in cash surrender value of life insurance policies	(5,549,000)	(4,508,000)
Gain Realized on Life Insurance Policies	(600,000)	(258,000)
Operating Lease, Payments	(15,867,000)	(8,993,000)
Operating lease termination payments	0	(4,750,000)
Change in Fair Value on Loans Held for Sale	620,000	1,534,000
Net change in:
Trading assets	182,000	(666,000)
Loans held for sale	18,959,000	23,017,000
Other assets	32,252,000	16,700,000
Increase (Decrease) in Other Operating Liabilities	58,669,000	28,267,000
Total adjustments	119,089,000	37,505,000
Net cash provided by operating activities	305,859,000	156,795,000
Cash flows used in investing activities
Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment	30,000	1,164,000
Increase (Decrease) in Equity Securities, FV-NI	(471,000)	(1,522,000)
Proceeds from maturities and principal repayments of securities available for sale	100,790,000	75,442,000
Payments to Acquire Debt Securities, Available-for-sale	(123,289,000)	(1,106,079,000)
Proceeds from maturities and principal repayments of securities held to maturity	132,997,000	199,304,000
Purchases of securities held to maturity	(763,987,000)	(340,713,000)
Net redemption of Federal Home Loan Bank stock	6,189,000	1,584,000
Investments in low income housing projects	(14,896,000)	(19,236,000)
Purchases of life insurance policies	(115,000)	(40,116,000)
Proceeds from Life Insurance Policy	2,273,000	576,000
Net (increase) decrease in loans	(107,211,000)	603,773,000
Purchases of bank premises and equipment	(18,019,000)	(16,114,000)
Proceeds from the sale of bank premises and equipment	1,228,000	78,000
Net cash used in investing activities	(784,481,000)	(641,859,000)
Cash flows (used in) provided by financing activities
Net decrease in time deposits	(351,458,000)	(165,052,000)
Net (decrease) increase in other deposits	(225,519,000)	1,432,037,000
Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net	(25,000,000)	0
Increase Decrease in Federal Home Loan Bank Advances Long Term	0	(10,000,000)
Repayments of Debt	(14,063,000)	(14,063,000)
Net Purchases from Stock Options Exercised	0	(57,000)
Restricted stock awards issued, net of awards surrendered	(1,085,000)	(1,246,000)
Proceeds from shares issued under direct stock purchase plan	1,765,000	1,515,000
Payments for shares repurchased under share repurchase program	(139,946,000)	0
Common dividends paid	(70,460,000)	(46,875,000)
Net cash (used in) provided by financing activities	(825,766,000)	1,196,259,000
Net (decrease) increase in cash and cash equivalents	(1,304,388,000)	711,195,000
Cash and cash equivalents at beginning of year	2,240,684,000	1,296,636,000
Cash and cash equivalents at end of period	936,296,000	2,007,831,000
Supplemental schedule of noncash activities
Net increase in capital commitments relating to low income housing project investments	4,408,000	34,127,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 14,124,000	$ 5,888,000

Investments is Low Income Housi

Investments is Low Income Housing Tax Credits Investments in Low Income Housing Tax Credits	9 Months Ended
	Sep. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]
Investments in Low Income Housing Projects [Text Block]	LOW INCOME HOUSING PROJECT INVESTMENTS The Company has invested in low income housing projects that generate Low Income Housing Tax Credits which provide the Company with tax credits and operating loss tax benefits over a period of approximately 15 years. None of the original investment is expected to be repaid. The following table presents certain information related to the Company's investments in low income housing projects as of the dates indicated: September 30 December 31 (Dollars in thousands) Original investment value $ 183,889 $ 179,481 Current recorded investment 129,875 135,497 Unfunded liability obligation 63,014 73,336 Tax credits and benefits 16,679 (1) 14,198 Amortization of investments 13,375 (1) 11,892 Net income tax benefit 3,304 (1) 2,306 (1) Amounts shown represent the estimated full year impact for the year ended December 31, 2022.

Investments is Low Income Hou_2

Investments is Low Income Housing Tax Credits Investments in Low Income Housing Tax Credits - Tables	9 Months Ended
	Sep. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]
Investments in Low Income Housing Projects [Table Text Block]	The following table presents certain information related to the Company's investments in low income housing projects as of the dates indicated: September 30 December 31 (Dollars in thousands) Original investment value $ 183,889 $ 179,481 Current recorded investment 129,875 135,497 Unfunded liability obligation 63,014 73,336 Tax credits and benefits 16,679 (1) 14,198 Amortization of investments 13,375 (1) 11,892 Net income tax benefit 3,304 (1) 2,306 (1) Amounts shown represent the estimated full year impact for the year ended December 31, 2022.

Investments is Low Income Hou_3

Investments is Low Income Housing Tax Credits Investments in Qualified Affordable Housing Projects - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2022		Dec. 31, 2021
Investments in Affordable Housing Projects [Abstract]
Original investment value	$ 183,889		$ 179,481
Amortization Method Qualified Affordable Housing Project Investments	129,875		135,497
Capital commitment relating to low income housing project investments	63,014		73,336
Tax credits and benefits	16,679	[1]	14,198
Amortization of investments	13,375	[1]	11,892
Net income tax benefit	3,304	[1]	$ 2,306
Interest Receivable	$ (42,700)
[1]Amounts shown represent the estimated full year impact for the year ended December 31, 2022.

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION Independent Bank Corp. (the “Company”) is a state chartered, federally registered bank holding company, incorporated in 1985. The Company is the sole stockholder of Rockland Trust Company (“Rockland Trust” or the “Bank”), a Massachusetts trust company chartered in 1907. All material intercompany balances and transactions have been eliminated in consolidation. Certain previously reported amounts have been reclassified to conform to the current year’s presentation. The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation of the financial statements, primarily consisting of normal recurring adjustments, have been included. Results for the nine months ended September 30, 2022 are not necessarily indicative of the results that may be expected for the year ending December 31, 2022 or any other interim period.

Recent Accounting Standards

Recent Accounting Standards	9 Months Ended
	Sep. 30, 2022
Recent Accounting Standards [Abstract]
RECENT ACCOUNTING STANDARDS	RECENT ACCOUNTING STANDARDS UPDATES Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 848 "Reference Rate Reform" Update No. 2020-04. Update No. 2020-04 was issued in March 2020 to provide optional expedients and exceptions for applying GAAP to certain contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments in this update apply only to contracts, hedging relationships, and other transactions that reference the London Interbank Offered Rate ("LIBOR") or another reference rate expected to be discontinued because of reference rate reform. The amendments will not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022 for which an entity has elected certain optional expedients that are retained through the end of the hedging relationship. The amendments in this update are effective for all entities as of March 12, 2020 through December 31, 2022 and do not apply to contract modifications made after December 31, 2022. FASB ASC Topic 848 "Reference Rate Reform" Update No. 2021-01 was subsequently issued in January 2021 and expanded application of the optional expedients to derivative transactions affected by the discounting transition. The Company has not yet adopted the amendments in these updates, but has established a working group to guide the Company’s transition from LIBOR and has begun efforts to transition off the LIBOR index consistent with industry timelines. The working group has identified its products that utilize LIBOR and has implemented fallback language to facilitate the transition to alternative rates. The Company is also evaluating existing platforms and systems as well as alternative indices in its preparation to offer new products tied to the alternative indices. The Company does not anticipate that the adoption of these updates will have a material impact on the Company's financial statements. FASB ASC Topic 260 "Earnings Per Share" Update No. 2020-06. In August 2020, the FASB issued update No. 2020-06 ("ASU 2020-06"). ASU 2020-06 included amendments to ASC 260 related to the earnings per share calculation, which were designed to simplify and improve consistency of the diluted earnings per share calculation. ASU 2020-06 is effective for public entities for annual periods beginning after December 15, 2021 and interim periods therein. Accordingly, the Company adopted ASU 2020-06 effective January 1, 2022 and the adoption did not have a material impact on the Company's financial statements. FASB ASC Topic 815 "Derivatives and Hedging" Update No. 2022-01. Update No. 2022-01 was issued in March 2022 and its amendments allow for nonprepayable financial assets to also be included in a closed portfolio hedged using the portfolio layer method. The expanded scope permits an entity to apply the same portfolio hedging method to both prepayable and nonprepayable financial assets resulting in more consistent accounting for similar hedges. All amendments in this update are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. The Company is currently assessing the impact of the adoption of this standard on the Company's financial statements. FASB ASC Topic 326 "Financial Instruments - Credit Losses" Update No. 2022-02. Update No. 2022-02 was issued in March 2022 and applies to public entities that have adopted ASU Topic 326. The amendments in this update eliminate the existing accounting guidance for troubled debt restructures ("TDRs") by creditors in Subtopic 310-40, Receivables - Troubled Debt Restructurings by Creditors and instead requires that an entity evaluate whether a modification

Securities

Securities	9 Months Ended
	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure	SECURITIES Trading Securities The Company had trading securities of $3.5 million and $3.7 million as of September 30, 2022 and December 31, 2021, respectively. These securities are held in a rabbi trust and will be used for future payments associated with the Company’s non-qualified 401(k) Restoration Plan and Non-qualified Deferred Compensation Plan. Equity Securities The Company had equity securities of $20.4 million and $23.2 million as of September 30, 2022 and December 31, 2021, respectively. These securities consist primarily of mutual funds held in a rabbi trust and will be used for future payments associated with the Company’s supplemental executive retirement plans. The following table represents a summary of the gains and losses recognized within non-interest income and non-interest expense within the consolidated statements of income that relate to equity securities for the periods indicated: Three Months Ended Nine Months Ended September 30 September 30 2022 2021 2022 2021 Dollars in thousands Net gains (losses) recognized during the period on equity securities $ (742) $ (169) (2,819) 695 Less: net gains recognized during the period on equity securities sold during the period — 50 8 191 Unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting date $ (742) $ (219) $ (2,827) $ 504 Available for Sale Securities The following table summarizes the amortized cost, allowance for credit losses, and fair value of available for sale securities and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) as of the dates indicated: September 30, 2022 December 31, 2021 Amortized Gross Gross Unrealized Allowance for credit losses Fair Amortized Gross Gross Unrealized Allowance for credit losses Fair (Dollars in thousands) Available for sale securities U.S. government agency securities $ 231,122 $ — $ (31,180) $ — $ 199,942 $ 217,393 $ 990 $ (2,901) $ — $ 215,482 U.S. treasury securities 873,891 — (89,433) — 784,458 873,467 172 (12,191) — 861,448 Agency mortgage-backed securities 393,296 50 (49,193) — 344,153 364,955 4,512 (5,534) — 363,933 Agency collateralized mortgage obligations 43,672 5 (2,890) — 40,787 78,966 1,282 (571) — 79,677 State, county, and municipal securities 193 — (6) — 187 192 11 — — 203 Single issuer trust preferred securities issued by banks 489 — — — 489 489 2 — — 491 Pooled trust preferred securities issued by banks and insurers 1,202 — (203) — 999 1,199 — (199) — 1,000 Small business administration pooled securities 62,048 — (7,552) — 54,496 47,075 1,839 — — 48,914 Total available for sale securities $ 1,605,913 $ 55 $ (180,457) $ — $ 1,425,511 $ 1,583,736 $ 8,808 $ (21,396) $ — $ 1,571,148 Excluded from the table above is accrued interest on available for sale securities of $3.3 million and $3.0 million as of September 30, 2022 and December 31, 2021, respectively, which is included within other assets on the consolidated balance sheets. Additionally, the Company did not record any write-offs of accrued interest income on available for sale securities during the three and nine months ended September 30, 2022 and 2021. Furthermore, no securities held by the Company were delinquent on contractual payments nor were any securities placed on non-accrual status as of September 30, 2022 and December 31, 2021. When securities are sold, the adjusted cost of the specific security sold is used to compute the gain or loss on the sale. The Company had no sales of securities available for sale during the three and nine months ended September 30, 2022 and 2021, and therefore no gains or losses were realized during the periods presented. The following tables show the gross unrealized losses and fair value of the Company’s available for sale securities in an unrealized loss position, and for which the Company has not recorded a provision for credit losses, as of the dates indicated. These available for sale securities are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position: September 30, 2022 Less than 12 months 12 months or longer Total # of Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) U.S. government agency securities 9 $ 80,353 $ (11,483) $ 119,589 $ (19,697) $ 199,942 $ (31,180) U.S. treasury securities 18 86,592 (12,426) 697,866 (77,007) 784,458 (89,433) Agency mortgage-backed securities 142 263,358 (29,512) 79,167 (19,681) 342,525 (49,193) Agency collateralized mortgage obligations 11 39,291 (2,890) — — 39,291 (2,890) State, county, and municipal securities 1 187 (6) — — 187 (6) Pooled trust preferred securities issued by banks and insurers 1 — — 999 (203) 999 (203) Small business administration pooled securities 8 36,885 (3,768) 17,611 (3,784) 54,496 (7,552) Total impaired available for sale securities 190 $ 506,666 $ (60,085) $ 915,232 $ (120,372) $ 1,421,898 $ (180,457) December 31, 2021 Less than 12 months 12 months or longer Total # of Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) U.S. government agency securities 6 $ 160,913 $ (2,901) $ — $ — $ 160,913 $ (2,901) U.S. treasury securities 17 811,993 (12,191) — — 811,993 (12,191) Agency mortgage-backed securities 12 214,678 (5,534) — — 214,678 (5,534) Agency collateralized mortgage obligations 1 22,960 (571) — — 22,960 (571) Pooled trust preferred securities issued by banks and insurers 1 — — 1,000 (199) 1,000 (199) Total impaired available for sale securities 37 $ 1,210,544 $ (21,197) $ 1,000 $ (199) $ 1,211,544 $ (21,396) The Company does not intend to sell these investments and has determined, based upon available evidence, that it is more likely than not that the Company will not be required to sell each security before the recovery of its amortized cost basis. In addition, management does not believe that any of the securities are impaired due to reasons of credit quality. As a result, the Company did not recognize a provision for credit losses on these investments during the three and nine months ended September 30, 2022 and 2021, respectively. The Company made this determination by reviewing various qualitative and quantitative factors regarding each investment category, such as current market conditions, extent and nature of changes in fair value, issuer rating changes and trends, volatility of earnings, and current analysts’ evaluations. As a result of the Company’s review of these qualitative and quantitative factors, the causes of the impairments listed in the table above by category were as follows at September 30, 2022: • U.S. Government Agency Securities, U.S. Treasury Securities, Agency Mortgage-Backed Securities, Agency Collateralized Mortgage Obligations and Small Business Administration Pooled Securities: These portfolios have contractual terms that generally do not permit the issuer to settle the securities at a price less than the current par value of the investment. The decline in market value of these securities is attributable to changes in interest rates and not credit quality. Additionally, these securities are implicitly guaranteed by the U.S. Government or one of its agencies. • State, County and Municipal Securities: This portfolio has contractual terms that generally do not permit the issuer to settle the securities at a price less than the current par value of the investment. The decline in market value of these securities is attributable to changes in interest rates and not credit quality. • Pooled Trust Preferred Securities: This portfolio consists of one below investment grade security which is performing. The unrealized loss on this security is attributable to the illiquid nature of the trust preferred market in the current economic and regulatory environment. Management evaluates collateral credit and instrument structure, including current and expected deferral and default rates and timing. In addition, discount rates are determined by evaluating comparable spreads observed currently in the market for similar instruments. Held to Maturity Securities The following table summarizes the amortized cost, fair value and allowance for credit losses of held to maturity securities and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) as of the dates indicated: September 30, 2022 December 31, 2021 Amortized Gross Gross Unrealized Allowance for credit losses Fair Amortized Gross Gross Unrealized Allowance for credit losses Fair (Dollars in thousands) U.S. government agency securities $ 31,696 $ — $ (2,393) $ — $ 29,303 $ 32,987 $ — $ (441) $ — $ 32,546 U.S. treasury securities 100,615 — (12,623) — 87,992 102,560 6 (324) — 102,242 Agency mortgage-backed securities 892,102 149 (90,158) — 802,093 493,012 8,495 (4,271) — 497,236 Agency collateralized mortgage obligations 553,995 — (77,025) — 476,970 415,736 3,232 (10,123) — 408,845 Single issuer trust preferred securities issued by banks 1,500 8 — — 1,508 1,500 8 — — 1,508 Small business administration pooled securities 117,727 12 (5,620) — 112,119 21,023 733 — — 21,756 Total held to maturity securities $ 1,697,635 $ 169 $ (187,819) $ — $ 1,509,985 $ 1,066,818 $ 12,474 $ (15,159) $ — $ 1,064,133 Substantially all held to maturity securities held by the Company are guaranteed by the U.S. federal government or other government sponsored agencies and have a long history of no credit losses. As a result, management has determined these securities to have a zero loss expectation and therefore the Company did not record a provision for estimated credit losses on any held to maturity securities during the three and nine months ended September 30, 2022 and 2021, respectively. Excluded from the table above is accrued interest on held to maturity securities of $4.3 million and $2.0 million as of September 30, 2022 and December 31, 2021, respectively, which is included within other assets on the consolidated balance sheets. Additionally, the Company did not record any write-offs of accrued interest income on held to maturity securities during the three and nine months ended September 30, 2022 and 2021. Furthermore, no securities held by the Company were delinquent on contractual payments nor were any securities placed on non-accrual status as of September 30, 2022 and December 31, 2021. When securities are sold, the adjusted cost of the specific security sold is used to compute the gain or loss on the sale. The Company had no sales of held to maturity securities during the three and nine months ended September 30, 2022 and 2021, respectively, and therefore no gains or losses were realized during the periods presented. The Company monitors the credit quality of held to maturity securities through the use of credit ratings. Credit ratings are monitored by the Company on at least a quarterly basis. As of September 30, 2022, all held to maturity securities held by the Company were rated investment grade or higher. The actual maturities of certain available for sale or held to maturity securities may differ from the contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. A schedule of the contractual maturities of available for sale and held to maturity securities as of September 30, 2022 is presented below: Due in one year or less Due after one year to five years Due after five to ten years Due after ten years Total Amortized Fair Amortized Fair Amortized Fair Amortized Fair Amortized Fair (Dollars in thousands) Available for sale securities U.S. government agency securities $ — $ — $ 68,007 $ 60,786 $ 163,115 $ 139,156 $ — $ — $ 231,122 $ 199,942 U.S. treasury securities — — 691,691 627,786 182,200 156,672 — — 873,891 784,458 Agency mortgage-backed securities 19,658 19,617 70,984 66,817 148,475 126,625 154,179 131,094 393,296 344,153 Agency collateralized mortgage obligations — — — — — — 43,672 40,787 43,672 40,787 State, county, and municipal securities — — 193 187 — — — — 193 187 Single issuer trust preferred securities issued by banks — — — — — — 489 489 489 489 Pooled trust preferred securities issued by banks and insurers — — — — — — 1,202 999 1,202 999 Small business administration pooled securities — — — — — — 62,048 54,496 62,048 54,496 Total available for sale securities $ 19,658 $ 19,617 $ 830,875 $ 755,576 $ 493,790 $ 422,453 $ 261,590 $ 227,865 $ 1,605,913 $ 1,425,511 Held to maturity securities U.S. government agency securities $ — $ — $ 31,696 $ 29,303 $ — $ — $ — $ — $ 31,696 $ 29,303 U.S. treasury securities — — 49,766 44,047 50,849 43,945 — — 100,615 87,992 Agency mortgage-backed securities 228 226 190,333 182,141 478,115 415,833 223,426 203,893 892,102 802,093 Agency collateralized mortgage obligations — — 29,998 28,550 36,791 31,784 487,206 416,636 553,995 476,970 Single issuer trust preferred securities issued by banks — — — — 1,500 1,508 — — 1,500 1,508 Small business administration pooled securities — — — — — — 117,727 112,119 117,727 112,119 Total held to maturity securities $ 228 $ 226 $ 301,793 $ 284,041 $ 567,255 $ 493,070 $ 828,359 $ 732,648 $ 1,697,635 $ 1,509,985 Total $ 19,886 $ 19,843 $ 1,132,668 $ 1,039,617 $ 1,061,045 $ 915,523 $ 1,089,949 $ 960,513 $ 3,303,548 $ 2,935,496 Included in the table above are $24.8 million of callable securities at September 30, 2022. The carrying value of securities pledged to secure public funds, trust deposits, and for other purposes, as required or permitted by law, was $963.9 million and $740.6 million at September 30, 2022 and December 31, 2021, respectively. At September 30, 2022 and December 31, 2021, the Company had no investments in obligations of individual states, counties, or municipalities which exceeded 10% of consolidated stockholders’ equity.

Loans, Allowance for Credit Los

Loans, Allowance for Credit Losses and Credit Quality (Notes)	9 Months Ended
	Sep. 30, 2022
Receivables [Abstract]
Loans, Allowance for Credit Losses and Credit Quality [Text Block]	LOANS, ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY Loans Held for Investment and Allowance for Credit Losses The following table summarizes the change in allowance for credit losses by loan category, and bifurcates the amount of loans allocated to each loan category for the period indicated: Three Months Ended September 30, 2022 (Dollars in thousands) Commercial and Commercial Commercial Small Residential Other Consumer Total Allowance for credit losses Beginning balance $ 14,107 $ 83,456 $ 11,710 $ 2,784 $ 19,750 $ 11,740 $ 772 $ 144,319 Charge-offs — (62) — — — — (679) (741) Recoveries 2 330 — 88 — 65 251 735 Provision for (release of) credit losses 6,060 (3,688) (291) (248) 852 (154) 469 3,000 Ending balance (1) $ 20,169 $ 80,036 $ 11,419 $ 2,624 $ 20,602 $ 11,651 $ 812 $ 147,313 Three Months Ended September 30, 2021 (Dollars in thousands) Commercial and Commercial Commercial Small Residential Home Equity Other Consumer Total Allowance for credit losses Beginning balance $ 17,032 $ 44,325 $ 4,865 $ 3,612 $ 12,014 $ 20,087 $ 422 $ 102,357 Charge-offs (1) — — (83) — — (248) (332) Recoveries 1 — — 50 — 49 121 221 Provision for (release of) credit losses (1,018) (6,527) (397) 88 (967) (1,268) 89 (10,000) Ending balance (1) $ 16,014 $ 37,798 $ 4,468 $ 3,667 $ 11,047 $ 18,868 $ 384 $ 92,246 Nine Months Ended September 30, 2022 (Dollars in thousands) Commercial and Commercial Commercial Small Residential Home Equity Other Consumer Total Allowance for credit losses Beginning balance $ 14,402 $ 83,486 $ 12,316 $ 3,508 $ 14,484 $ 17,986 $ 740 $ 146,922 Charge-offs — (62) — (59) — (122) (1,749) (1,992) Recoveries 44 333 — 147 — 105 754 1,383 Provision for (release of) credit losses 5,723 (3,721) (897) (972) 6,118 (6,318) 1,067 1,000 Ending balance (1) $ 20,169 $ 80,036 $ 11,419 $ 2,624 $ 20,602 $ 11,651 $ 812 $ 147,313 Nine Months Ended September 30, 2021 (Dollars in thousands) Commercial and Commercial Commercial Small Residential Other Consumer Total Allowance for credit losses Beginning balance $ 21,086 $ 45,009 $ 5,397 $ 5,095 $ 14,275 $ 22,060 $ 470 $ 113,392 Charge-offs (3,474) — — (184) — (69) (772) (4,499) Recoveries 100 57 — 65 1 107 523 853 Provision for (release of) credit losses (1,698) (7,268) (929) (1,309) (3,229) (3,230) 163 (17,500) Ending balance (1) $ 16,014 $ 37,798 $ 4,468 $ 3,667 $ 11,047 $ 18,868 $ 384 $ 92,246 (1) Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $42.7 million and $36.7 million as of September 30, 2022 and September 30, 2021, respectively. The balance of allowance for credit losses of $147.3 million as of September 30, 2022 remained relatively flat compared to $146.9 million at December 31, 2021. The nominal change in the Company's allowance for credit losses for the nine months ended September 30, 2022 primarily reflects increased reserves attributable to category shifts on nonperforming loans and net loan growth, offset by a stabilized credit environment and continued strong asset quality metrics. For the purpose of estimating the allowance for credit losses, management segregated the loan portfolio into the portfolio segments detailed in the above tables. Each of these loan categories possesses unique risk characteristics that are considered when determining the appropriate level of allowance for each segment. Some of the characteristics unique to each loan category include: Commercial Portfolio • Commercial and Industrial : Loans in this category consist of revolving and term loan obligations extended to business and corporate enterprises for the purpose of financing working capital and/or capital investment. Collateral generally consists of pledges of business assets including, but not limited to: accounts receivable, inventory, plant and equipment, or real estate, if applicable. Repayment sources consist of primarily, operating cash flow, and secondarily, liquidation of assets. • Commercial Real Estate : Loans in this category consist of mortgage loans to finance investment in real property such as multi-family residential, commercial/retail, office, industrial, hotels, educational and healthcare facilities and other specific use properties. Loans are typically written with amortizing payment structures. Collateral values are determined based upon third party appraisals and evaluations. Loan to value ratios at origination are governed by established policy and regulatory guidelines. Repayment sources consist of, primarily, cash flow from operating leases and rents and, secondarily, liquidation of assets. • Commercial Construction : Loans in this category consist of short-term construction loans, revolving and nonrevolving credit lines and construction/permanent loans to finance the acquisition, development and construction or rehabilitation of real property. Project types include residential land development, one-to-four family, condominium, and multi-family home construction, commercial/retail, office, industrial, hotels, educational and healthcare facilities and other specific use properties. Loans may be written with nonamortizing or hybrid payment structures depending upon the type of project. Collateral values are determined based upon third party appraisals and evaluations. Loan to value ratios at origination are governed by established policy and regulatory guidelines. Repayment sources vary depending upon the type of project and may consist of sale or lease of units, operating cash flows or liquidation of other assets. • Small Business: Loans in this category consist of revolving, term loan and mortgage obligations extended to sole proprietors and small businesses for purposes of financing working capital and/or capital investment. Collateral generally consists of pledges of business assets including, but not limited to, accounts receivable, inventory, plant and equipment, or real estate if applicable. Repayment sources consist primarily of operating cash flows and, secondarily, liquidation of assets. For the commercial portfolio it is the Company’s policy to obtain personal guarantees for payment from individuals holding material ownership interests in the borrowing entities. Consumer Portfolio • Residential Real Estate : Residential mortgage loans held in the Company’s portfolio are made to borrowers who demonstrate the ability to make scheduled payments with full consideration to underwriting factors such as current and expected income, employment status, current assets, other financial resources, credit history and the value of the collateral. Collateral consists of mortgage liens on one-to-four family residential properties. Residential mortgage loans also include loans to construct owner-occupied one-to-four family residential properties. • Home Equity : Home equity loans and credit lines are made to qualified individuals and are primarily secured by senior or junior mortgage liens on owner-occupied one-to-four family homes, condominiums or vacation homes. Each home equity loan has a fixed rate and is billed in equal payments comprised of principal and interest. The majority of home equity lines of credit have a variable rate and are billed in interest-only payments during the draw period. At the end of the draw period, the home equity line of credit is billed as a percentage of the then outstanding principal balance plus all accrued interest over a predetermined repayment period, as set forth in the note. Additionally, the Company has the option of renewing each line of credit for additional draw periods. Borrower qualifications include favorable credit history combined with supportive income requirements and combined loan to value ratios within established policy guidelines. • Other Consumer: Other consumer loan products include personal lines of credit and amortizing loans made to qualified individuals for various purposes such as debt consolidation, personal expenses or overdraft protection. Borrower qualifications include favorable credit history combined with supportive income and collateral requirements within established policy guidelines. These loans may be secured or unsecured. Credit Quality The Company continually monitors the asset quality of the loan portfolio using all available information. Based on this information, loans demonstrating certain payment issues or other weaknesses may be categorized as adversely risk-rated, delinquent, nonperforming and/or put on nonaccrual status. Additionally, in the course of resolving such loans, the Company may choose to restructure the contractual terms of certain loans to match the borrower’s ability to repay the loan based on their current financial condition. The Company reviews numerous credit quality indicators when assessing the risk in its loan portfolio. For the commercial portfolio, the Company utilizes a 10-point credit risk-rating system, which assigns a risk-grade to each loan obligation based on a number of quantitative and qualitative factors associated with a commercial or small business loan transaction. Factors considered include industry and market conditions, position within the industry, earnings trends, operating cash flow, asset/liability values, debt capacity, guarantor strength, management and controls, financial reporting, collateral, and other considerations. The risk-rating categories for the commercial portfolio are defined as follows: • Pass: Risk-rating “1” through “6” comprises of loans ranging from ‘Substantially Risk Free’ which indicates borrowers are of unquestioned credit standing and the pinnacle of credit quality, well established companies with a very strong financial condition, and loans fully secured by cash collateral, through ‘Acceptable Risk’, which indicates borrowers may exhibit declining earnings, strained cash flow, increasing or above average leverage and/or weakening market fundamentals that indicate below average asset quality, margins and market share. Collateral coverage is protective. • Potential Weakness: Borrowers exhibit potential credit weaknesses or downward trends deserving management’s close attention. If not checked or corrected, these trends will weaken the Company’s asset and position. While potentially weak, currently these borrowers are marginally acceptable; no loss of principal or interest is envisioned. • Definite Weakness Loss Unlikely: Borrowers exhibit well defined weaknesses that jeopardize the orderly liquidation of debt. Loans may be inadequately protected by the current net worth and paying capacity of the obligor or by the collateral pledged, if any. Normal repayment from the borrower is in jeopardy, although no loss of principal is envisioned. However, there is a distinct possibility that a partial loss of interest and/or principal will occur if the deficiencies are not corrected. Collateral coverage may be inadequate to cover the principal obligation. • Partial Loss Probable: Borrowers exhibit well defined weaknesses that jeopardize the orderly liquidation of debt with the added provision that the weaknesses make collection of the debt in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Serious problems exist to the point where partial loss of principal is likely. • Definite Loss: Borrowers deemed incapable of repayment. Loans to such borrowers are considered uncollectible and of such little value that continuation as active assets of the Company is not warranted. The Company utilizes a comprehensive, continuous strategy for evaluating and monitoring commercial credit quality. Initially, credit quality is determined at loan origination and is re-evaluated when subsequent actions, such as renewals, modifications or reviews, occur. Actively managed commercial borrowers are required to provide updated financial information at least annually which is carefully evaluated for any changes in credit quality. Larger loan relationships are subject to a full annual credit review by experienced credit professionals, while continuous portfolio monitoring techniques are employed to evaluate changes in credit quality for smaller loan relationships. Any changes in credit quality are reflected in risk-rating changes. Additionally, the Company retains an independent loan review firm to evaluate the credit quality of the commercial loan portfolio. The independent loan review process achieves significant penetration into the commercial loan portfolio and reports the results of these reviews to the Audit Committee of the Board of Directors on a quarterly basis. Commercial loan modifications granted by the Company allowing payment deferrals for qualifying borrowers in accordance with the Coronavirus Aid, Relief and Economic Security A ct (" CARES Act") were assessed for potential downgrades of risk ratings. For the Company’s consumer portfolio, the quality of the loan is best indicated by the repayment performance of an individual borrower. As a result, for this portfolio the Company utilizes a pass/default risk-rating system, based on an age analysis (i.e., days past due) associated with each consumer loan. Under this structure, consumer loans less than 90 days past due are assigned a "pass" rating, while any consumer loans 90 days or more past due are assigned a "default" rating. The following table details the amortized cost balances of the Company's loan portfolios, presented by credit quality indicator and origination year as of the dates indicated below: September 30, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Revolving converted to Term Total (1) (Dollars in thousands) Commercial and Pass (2) $ 292,601 $ 149,588 $ 122,752 $ 67,591 $ 82,911 $ 22,943 $ 759,390 $ 3,362 $ 1,501,138 Potential weakness 1,540 973 1,038 1,844 3,955 715 6,557 — 16,622 Definite weakness - loss unlikely 2,485 935 — 39 — 111 27,019 — 30,589 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total commercial and industrial $ 296,626 $ 151,496 $ 123,790 $ 69,474 $ 86,866 $ 23,769 $ 792,966 $ 3,362 $ 1,548,349 Commercial real estate Pass $ 922,772 $ 1,467,370 $ 1,265,711 $ 773,102 $ 733,621 $ 1,976,282 $ 47,317 $ 1,070 $ 7,187,245 Potential weakness 32,579 53,096 41,164 14,147 68,298 205,234 — — 414,518 Definite weakness - loss unlikely 26,684 2,224 4,722 2,585 17,928 21,836 — — 75,979 Partial loss probable — — — — — 175 — — 175 Definite loss — — — — — — — — — Total commercial real estate $ 982,035 $ 1,522,690 $ 1,311,597 $ 789,834 $ 819,847 $ 2,203,527 $ 47,317 $ 1,070 $ 7,677,917 Commercial construction Pass $ 388,627 $ 392,229 $ 231,336 $ 57,768 $ 26,263 $ 7,844 $ 21,457 $ 632 $ 1,126,156 Potential weakness 40,631 — 3,387 — — — — — 44,018 Definite weakness - loss unlikely 2,138 12,845 — — — — — — 14,983 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total commercial construction $ 431,396 $ 405,074 $ 234,723 $ 57,768 $ 26,263 $ 7,844 $ 21,457 $ 632 $ 1,185,157 Small business Pass $ 41,923 $ 46,581 $ 31,968 $ 17,536 $ 10,454 $ 20,227 $ 37,455 $ — $ 206,144 Potential weakness — 163 394 369 193 129 697 — 1,945 Definite weakness - loss unlikely 194 — 442 7 20 224 591 — 1,478 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total small business $ 42,117 $ 46,744 $ 32,804 $ 17,912 $ 10,667 $ 20,580 $ 38,743 $ — $ 209,567 Residential real estate Pass $ 557,643 $ 426,721 $ 196,538 $ 95,689 $ 96,828 $ 582,830 $ — $ — $ 1,956,249 Default — — 676 466 376 1,487 — — 3,005 Total residential real estate $ 557,643 $ 426,721 $ 197,214 $ 96,155 $ 97,204 $ 584,317 $ — $ — $ 1,959,254 Home equity Pass $ 37,298 $ 61,898 $ 56,262 $ 32,761 $ 27,906 $ 124,325 $ 741,952 $ 3,190 $ 1,085,592 Default — — — 122 — 285 1,171 — 1,578 Total home equity $ 37,298 $ 61,898 $ 56,262 $ 32,883 $ 27,906 $ 124,610 $ 743,123 $ 3,190 $ 1,087,170 Other consumer Pass $ 383 $ 2,498 $ 1,969 $ 1,370 $ 380 $ 3,630 $ 22,680 $ — $ 32,910 Default — 14 — — — 11 1 — 26 Total other consumer $ 383 $ 2,512 $ 1,969 $ 1,370 $ 380 $ 3,641 $ 22,681 $ — $ 32,936 Total $ 2,347,498 $ 2,617,135 $ 1,958,359 $ 1,065,396 $ 1,069,133 $ 2,968,288 $ 1,666,287 $ 8,254 $ 13,700,350 September 30, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Revolving converted to Term Total (1) (Dollars in thousands) Commercial and Pass (2) $ 590,532 $ 185,706 $ 97,095 $ 74,381 $ 15,175 $ 16,731 $ 605,718 $ 66 $ 1,585,404 Potential weakness 1,338 9,035 3,286 1,672 980 1,632 10,262 — 28,205 Definite weakness - loss unlikely 16,597 332 793 1,034 2,678 214 5,452 — 27,100 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total commercial and industrial $ 608,467 $ 195,073 $ 101,174 $ 77,087 $ 18,833 $ 18,577 $ 621,432 $ 66 $ 1,640,709 Commercial real estate Pass $ 699,565 $ 1,019,453 $ 606,645 $ 347,874 $ 442,306 $ 794,263 $ 17,068 $ — $ 3,927,174 Potential weakness 22,106 29,091 51,976 14,628 21,350 82,655 13,615 — 235,421 Definite weakness - loss unlikely 9,331 16,336 3,399 13,657 9,762 6,179 — — 58,664 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total commercial real estate $ 731,002 $ 1,064,880 $ 662,020 $ 376,159 $ 473,418 $ 883,097 $ 30,683 $ — $ 4,221,259 Commercial construction Pass $ 127,945 $ 216,573 $ 82,559 $ 22,851 $ 22,873 $ 6,505 $ 16,424 $ 2,134 $ 497,864 Potential weakness — 12,991 — — — — — — 12,991 Definite weakness - loss unlikely — 4,560 — — — — — — 4,560 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total commercial construction $ 127,945 $ 234,124 $ 82,559 $ 22,851 $ 22,873 $ 6,505 $ 16,424 $ 2,134 $ 515,415 Small business Pass $ 40,736 $ 38,804 $ 22,075 $ 14,241 $ 10,675 $ 21,809 $ 32,679 $ — $ 181,019 Potential weakness 14 — 383 200 5 174 627 — 1,403 Definite weakness - loss unlikely 138 637 41 26 10 284 580 — 1,716 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total small business $ 40,888 $ 39,441 $ 22,499 $ 14,467 $ 10,690 $ 22,267 $ 33,886 $ — $ 184,138 Residential real estate Pass $ 277,949 $ 184,974 $ 92,723 $ 97,915 $ 102,581 $ 463,397 $ — $ — $ 1,219,539 Default — 123 — 1,024 — 2,163 — — 3,310 Total residential real estate $ 277,949 $ 185,097 $ 92,723 $ 98,939 $ 102,581 $ 465,560 $ — $ — $ 1,222,849 Home equity Pass $ 58,897 $ 68,629 $ 42,083 $ 37,644 $ 41,792 $ 117,488 $ 628,575 $ 3,575 $ 998,683 Default — — — — — 33 1,717 35 1,785 Total home equity $ 58,897 $ 68,629 $ 42,083 $ 37,644 $ 41,792 $ 117,521 $ 630,292 $ 3,610 $ 1,000,468 Other consumer Pass $ 307 $ 347 $ 244 $ 78 $ 500 $ 5,338 $ 16,359 $ — $ 23,173 Default — — — — — — 2 — 2 Total other consumer $ 307 $ 347 $ 244 $ 78 $ 500 $ 5,338 $ 16,361 $ — $ 23,175 Total $ 1,845,455 $ 1,787,591 $ 1,003,302 $ 627,225 $ 670,687 $ 1,518,865 $ 1,349,078 $ 5,810 $ 8,808,013 (1) Loan origination dates in the tables above reflect the original origination date, or the date of a material modification of a previously originated loan. (2) Loans originated as part of the Paycheck Protection Program ("PPP") established by the CARES Act are included within commercial and industrial under the 2021 and 2020 vintage year and "pass" category as these loans are 100% guaranteed by the U.S. Government. Outstanding PPP loans totaled $11.1 million and $383.6 million as of September 30, 2022 and 2021, respectively. For the Company’s consumer portfolio, the quality of the loan is best indicated by the repayment performance of an individual borrower. However, the Company does supplement performance data with current Fair Isaac Corporation (“FICO”) scores and Loan to Value (“LTV”) estimates. Current FICO data is purchased and appended to all consumer loans on a regular basis. In addition, automated valuation services and broker opinions of value are used to supplement original value data for the residential real estate and home equity portfolios, periodically. The following table shows the weighted average FICO scores and the weighted average combined LTV ratios at the dates indicated below: September 30 December 31 Residential real estate portfolio FICO score (re-scored)(1) 753 749 LTV (re-valued)(2) 54.8 % 54.4 % Home equity portfolio FICO score (re-scored)(1) 771 772 LTV (re-valued)(2)(3) 40.9 % 42.4 % (1) The average FICO scores at September 30, 2022 are based upon rescores from June 2022, as available for previously originated loans, or origination score data for loans booked since June 2022. The average FICO scores at December 31, 2021 were based upon rescores available from December 2021, as available for previously originated loans, or origination score data for loans booked in December 2021. (2) The combined LTV ratios for September 30, 2022 are based upon updated automated valuations as of August 2022, when available, and/or the most current valuation data available. The combined LTV ratios for December 31, 2021 were based upon updated automated valuations as of November 2021, when available, and/or the most current valuation data available as of such date. The updated automated valuations provide new information on loans that may be available since the previous valuation was obtained. If no new information is available, the valuation will default to the previously obtained data or most recent appraisal. (3) For home equity loans and lines in a subordinate lien, the LTV data represents a combined LTV, taking into account the senior lien data for loans and lines. Unfunded Commitments Management evaluates the need for a reserve on unfunded lending commitments in a manner consistent with loans held for investment. At September 30, 2022 and December 31, 2021, the Company's estimated reserve for unfunded commitments amounted to $1.3 million and $1.5 million, respectively. Asset Quality The Company’s philosophy toward managing its loan portfolios is predicated upon careful monitoring, which stresses early detection and response to delinquent and default situations. Delinquent loans are managed by a team of collection specialists and the Company seeks to make arrangements to resolve any delinquent or default situation over the shortest possible time frame. As a general rule, loans 90 days or more past due with respect to principal or interest are classified as nonaccrual loans. The Company also may use discretion regarding other loans 90 days or more delinquent if the loan is well secured and/or in process of collection. In response to the COVID-19 pandemic, the Company has granted loan modifications to allow deferral of payments for borrowers negatively impacted by the pandemic. The balance of loans with active deferrals as of September 30, 2022 and December 31, 2021 was $193.3 million and $383.1 million, respectively. The majority of these loans with active deferrals as of September 30, 2022 continue to be characterized as current loans. In accordance with regulatory guidance, these modifications are not considered to be troubled debt restructures ("TDRs") if they were performing as of December 31, 2019. Additionally, a majority of these modified loans are characterized as current and therefore are not impacting nonaccrual or delinquency totals as of September 30, 2022 and December 31, 2021. The Company does, however, consider all active deferrals when estimating loss reserves. As loans reach their deferral maturity date, consideration of TDR and delinquency status will resume in accordance with the Company's accounting policy. The following table shows information regarding nonaccrual loans as of the dates indicated: Nonaccrual Balances September 30, 2022 December 31, 2021 With Allowance for Credit Losses Without Allowance for Credit Losses Total With Allowance for Credit Losses Without Allowance for Credit Losses Total (Dollars in thousands) Commercial and industrial $ 27,374 $ 19 $ 27,393 $ 3,420 $ 19 $ 3,439 Commercial real estate 15,982 — 15,982 10,870 — 10,870 Small business 50 — 50 44 — 44 Residential real estate 8,891 — 8,891 8,580 602 9,182 Home equity 3,485 — 3,485 3,781 — 3,781 Other consumer 216 — 216 504 — 504 Total nonaccrual loans (1) $ 55,998 $ 19 $ 56,017 $ 27,199 $ 621 $ 27,820 (1) Included in these amounts were $1.5 million and $2.0 million of nonaccruing TDRs at September 30, 2022 and December 31, 2021, respectively. It is the Company's policy to reverse any accrued interest when a loan is put on nonaccrual status, and, as such, the Company did not record any interest income on nonaccrual loans during the nine months ended September 30, 2022 and 2021. The following table shows information regarding foreclosed residential real estate property at the dates indicated: September 30, 2022 December 31, 2021 (Dollars in thousands) Foreclosed residential real estate property held by the creditor $ — $ — Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure $ 1,871 $ 1,426 The following tables show the age analysis of past due financing receivables as of the dates indicated: September 30, 2022 30-59 days 60-89 days 90 days or more Total Past Due Total Amortized Cost Number Principal Number Principal Number Principal Number Principal Current (Dollars in thousands) Loan Portfolio Commercial and industrial 10 $ 322 1 $ 182 3 $ 558 14 $ 1,062 $ 1,547,287 $ 1,548,349 $ — Commercial real estate 9 5,419 5 4,491 2 208 16 10,118 7,667,799 7,677,917 — Commercial construction — — 1 1,661 — — 1 1,661 1,183,496 1,185,157 — Small business 7 233 3 15 6 29 16 277 209,290 209,567 — Residential real estate 15 3,146 6 1,202 19 1,804 40 6,152 1,953,102 1,959,254 — Home equity 14 534 8 775 19 1,577 41 2,886 1,084,284 1,087,170 — Other consumer (1) 504 510 36 245 8 26 548 781 32,155 32,936 — Total 559 $ 10,164 60 $ 8,571 57 $ 4,202 676 $ 22,937 $ 13,677,413 $ 13,700,350 $ — December 31, 2021 30-59 days 60-89 days 90 days or more Total Past Due Total Recorded Number Principal Number Principal Number Principal Number Principal Current (Dollars in thousands) Loan Portfolio Commercial and industrial 7 $ 143 2 $ 252 2 $ 24 11 $ 419 $ 1,562,860 $ 1,563,279 $ — Commercial real estate 15 32,845 — — 4 1,339 19 34,184 7,958,160 7,992,344 — Commercial construction — — — — — — — — 1,165,457 1,165,457 — Small business 11 136 6 53 4 24 21 213 192,976 193,189 — Residential real estate 12 2,709 5 714 76 3,922 93 7,345 1,597,341 1,604,686 — Home equity 15 1,375 6 381 21 1,671 42 3,427 1,036,184 1,039,611 — Other consumer (1) 458 719 41 277 16 112 515 1,108 27,612 28,720 — Total 518 $ 37,927 60 $ 1,677 123 $ 7,092 701 $ 46,696 $ 13,540,590 $ 13,587,286 $ — (1) Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances. Troubled Debt Restructurings In the course of resolving nonperforming loans, the Bank may choose to restructure the contractual terms of certain loans. The Bank attempts to work out an alternative payment schedule with the borrower in order to avoid foreclosure actions. Exclusive of loans modified under provisions of the CARES Act, any loans that are modified are reviewed by the Bank to identify if a TDR has occurred, which is when, for economic or legal reasons related to a borrower’s financial difficulties, the Bank grants a concession to the borrower that it would not otherwise consider. Terms may be modified to fit the ability of the borrower to repay in line with its current financial status and the restructuring of the loan may include the transfer of assets from the borrower to satisfy the debt, a modification of loan terms, or a combination of the two. The following table shows the Company’s total TDRs and other pertinent information as of the dates indicated: September 30, 2022 December 31, 2021 (Dollars in thousands) TDRs on accrual status $ 11,549 $ 14,635 TDRs on nonaccrual 1,538 1,993 Total TDRs $ 13,087 $ 16,628 Additional commitments to lend to a borrower who has been a party to a TDR $ 137 $ 190 The Company’s policy is to have any restructured loan which is on nonaccrual status prior to being modified remain on nonaccrual status for six months subsequent to being modified before management considers its return to accrual status. If the restructured loan is on accrual status prior to being modified, it is reviewed to determine if the modified loan should remain on accrual status. Additionally, loans classified as TDRs are adjusted to reflect the changes in value of the recorded investment in the loan, if any, resulting from the granting of a concession. For all residential loan modifications, the borrower must perform during a 90 day trial period before the modification is finalized. The following table shows the TDRs which occurred during the periods indicated and the change in the recorded investment subsequent to the modifications occurring: Three Months Ended Nine Months Ended September 30, 2022 September 30, 2022 Number of Pre-Modification Post-Modification Number of Pre-Modification Post-Modification (Dollars in thousands) (Dollars in thousands) Troubled debt restructurings Commercial and industrial 1 $ 68 $ 67 1 68 67 Total (1) 1 $ 68 $ 67 1 68 67 Three Months Ended Nine Months Ended September 30, 2021 September 30, 2021 Number of Pre-Modification Post-Modification Number of Pre-Modification Post-Modification (Dollars in thousands) Troubled debt restructurings Commercial and industrial — $ — $ — 1 $ 14,148 $ 14,148 Commercial real estate — — — 5 3,964 3,964 Small business — — — 2 189 189 Total (1) — $ — $ — 8 $ 18,301 $ 18,301 (1) The pre-modification and post-modification balances represent the legal principal balance of the loan. Activity presented in the table above includes $14.3 million of modifications on existing TDRs occurring during the nine months ended September 30, 2021. The following table shows the Company’s post-modification balance of TDRs listed by type of modification for the periods indicated: Three Months Ended Nine Months Ended September 30 September 30 2022 2021 2022 2021 (Dollars in thousands) Combination rate and maturity — — — 14,148 Extended maturity 67 — 67 4,153 Total 67 — $ 67 $ 18,301 The Company considers a loan to have defaulted when it reaches 90 days past due. During the nine months ended September 30, 2022 and September 30, 2021, there were no loans modified during the prior twelve months that subsequently defaulted during the respective periods. The Company determines the amount of allowance on TDRs in accordance with CECL methodology using a discounted cash flow approach, or a fair value of collateral approach if the loan is determined to be individually evaluated.

Stock Based Compensation

Stock Based Compensation	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
STOCK BASED COMPENSATION	STOCK BASED COMPENSATION During the nine months ended September 30, 2022, the Company had the following activity related to stock based compensation: Time Vested Restricted Stock Awards The Company made the following awards of time vested restricted stock: Date Shares Granted Plan Grant Date Fair Value Per Share Vesting Period 2/17/2022 52,100 2005 Employee Stock Plan $ 84.70 Ratably over 5 years from grant date 5/24/2022 8,099 2018 Non-Employee Director Stock Plan $ 80.39 Shares vested immediately 9/15/2022 646 2005 Employee Stock Plan $ 77.44 Ratably over 5 years from grant date Performance-Based Restricted Stock Awards On February 17, 2022, the Company granted 20,700 performance-based restricted stock awards, representing the maximum number of shares that may be earned under the awards, to certain executive level employees. These performance-based restricted stock awards were issued from the 2005 Employee Stock Plan and were determined to have a grant date fair value per share of $84.70. The number of shares to be vested are contingent upon the Company's attainment of certain performance criteria to be measured at the end of a three year performance period, ending December 31, 2024. The awards will vest upon the earlier of the date on which it is determined if the performance goal is achieved subsequent to the performance period or March 31, 2025.

Derivatives and Hedging Activit

Derivatives and Hedging Activities	9 Months Ended
	Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Fair Value	DERIVATIVE AND HEDGING ACTIVITIES The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally to manage the Company’s interest rate risk. Additionally, the Company enters into interest rate derivatives, foreign exchange contracts and risk participation agreements to accommodate the business requirements of its customers (“customer related positions”). The Company minimizes the market and liquidity risks of customer related positions by entering into similar offsetting positions with broker-dealers. Derivative instruments are carried at fair value in the Company's financial statements. The accounting for changes in the fair value of a derivative instrument is dependent upon whether or not it qualifies as a hedge for accounting purposes, and further, by the type of hedging relationship. The Company does not enter into proprietary trading positions for any derivatives. The Company is subject to over-the-counter derivative clearing requirements which require certain derivatives to be cleared through central clearing houses. Accordingly, the Company clears certain derivative transactions through the Chicago Mercantile Exchange Clearing House ("CME"). This clearing house requires the Company to post initial and variation margin to mitigate the risk of non-payment, the latter of which is received or paid daily based on the net asset or liability position of the contracts. Interest Rate Positions The Company may utilize various interest rate derivatives as hedging instruments against interest rate risk associated with the Company’s borrowings and loan portfolios. An interest rate derivative is an agreement whereby one party agrees to pay a floating rate of interest on a notional principal amount in exchange for receiving a fixed rate of interest on the same notional amount, for a predetermined period of time, from a second party. The amounts relating to the notional principal amount are not actually exchanged. The following tables reflect the Company's derivative positions as of the dates indicated below for interest rate derivatives which qualify as cash flow hedges for accounting purposes: September 30, 2022 Weighted Average Rate Notional Amount Average Maturity Current Rate Paid Receive Fixed Fair Value (in thousands) (in years) (in thousands) Interest rate swaps on loans $ 1,050,000 3.23 2.72 % 2.66 % $ (43,365) Current Rate Paid Receive Fixed Swap Rate Interest rate collars on loans 400,000 2.52 2.69 % 3.09% - 2.19% (10,375) Total $ 1,450,000 $ (53,740) December 31, 2021 Weighted Average Rate Notional Amount Average Maturity Current Pay Fixed Fair Value (in thousands) (in years) (in thousands) Interest rate swaps on borrowings $ 25,000 0.62 0.16 % 1.88 % $ (294) Current Rate Paid Receive Fixed Interest rate swaps on loans 550,000 2.58 0.11 % 2.16 % 11,830 Current Rate Paid Receive Fixed Swap Rate Interest rate collars on loans 400,000 1.66 0.11 % 2.73% - 2.20% 9,383 Total $ 975,000 $ 20,919 The maximum length of time over which the Company is currently hedging its exposure to the variability in future cash flows for forecasted transactions related to the payment of variable interest on existing financial instruments is 6.5 years. For derivative instruments that are designated and qualify as cash flow hedging instruments, the effective portion of the gains or losses is reported as a component of other comprehensive income ("OCI"), and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The Company expects approximately $22.5 million (pre-tax) to be reclassified as an increase to interest expense, from OCI related to the Company’s cash flow hedges in the twelve months following September 30, 2022. This reclassification is due to anticipated payments that will be made and/or received on the swaps based upon the forward curve as of September 30, 2022. The Company had no fair value hedges as of September 30, 2022 or December 31, 2021. Customer Related Positions Loan level derivatives, primarily interest rate swaps, offered to commercial borrowers through the Company’s loan level derivative program do not qualify as hedges for accounting purposes. The Company believes that its exposure to commercial customer derivatives is limited because these contracts are simultaneously matched at inception with an offsetting dealer transaction. Derivatives with dealer counterparties are then either cleared through a clearinghouse or settled directly with a single counterparty. The commercial customer derivative program allows the Company to retain variable-rate commercial loans while allowing the customer to synthetically fix the loan rate by entering into a variable-to-fixed interest rate swap. The amounts relating to the notional principal amount are not actually exchanged. Foreign exchange contracts offered to commercial borrowers through the Company’s derivative program do not qualify as hedges for accounting purposes. The Company acts as a seller and buyer of foreign exchange contracts to accommodate its customers. To mitigate the market and liquidity risk associated with these derivatives, the Company enters into similar offsetting positions. The amounts relating to the notional principal amount are exchanged. The Company has entered into risk participation agreements with other dealer banks in commercial loan agreements. Participating banks guarantee the performance on borrower-related interest rate swap contracts. These derivatives are not designated as hedges and, therefore, changes in fair value are recognized in earnings. Under a risk participation-out agreement, a derivative asset, the Company participates out a portion of the credit risk associated with the interest rate swap position executed with the commercial borrower for a fee paid to the participating bank. Under a risk participation-in agreement, a derivative liability, the Company assumes, or participates in, a portion of the credit risk associated with the interest rate swap position with the commercial borrower for a fee received from the other bank. The following table reflects the Company’s customer related derivative positions as of the dates indicated below for those derivatives not designated as hedging: Notional Amount Maturing Number of Positions Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value September 30, 2022 (Dollars in thousands) Loan level swaps Receive fixed, pay variable 285 $ 82,932 $ 98,409 $ 259,419 $ 173,197 $ 953,915 $ 1,567,872 $ (127,611) Pay fixed, receive variable 285 82,932 98,409 259,419 173,197 953,915 1,567,872 127,609 Foreign exchange contracts Buys foreign currency, sells U.S. currency 62 162,094 13,013 — — — 175,107 (15,992) Buys U.S. currency, sells foreign currency 62 162,094 13,013 — — — 175,107 16,079 Risk participation agreements Participation out 11 2,605 — 24,538 — 72,045 99,188 64 Participation in 7 22,802 16,329 — — 25,944 65,075 (15) Notional Amount Maturing Number of Positions Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value December 31, 2021 (Dollars in thousands) Loan level swaps Receive fixed, pay variable 296 $ 37,589 $ 139,844 $ 123,507 $ 260,953 $ 1,060,276 $ 1,622,169 $ 55,984 Pay fixed, receive variable 296 37,589 139,844 123,507 260,953 1,060,276 1,622,169 (55,982) Foreign exchange contracts Buys foreign currency, sells U.S. currency 52 149,588 8,784 — — — 158,372 5,734 Buys U.S. currency, sells foreign currency 52 149,588 8,784 — — — 158,372 (5,734) Risk participation agreements Participation out 11 — 2,635 7,138 24,539 68,408 102,720 279 Participation in 7 29,972 28,235 — — 8,339 66,546 (55) (1) The Company may enter into one dealer swap agreement which offsets multiple commercial borrower swap agreements. Mortgage Derivatives The Company enters into commitments to fund residential mortgage loans at specified rates and times in the future, with the intention that loans may be sold subsequently in the secondary market. Mortgage loan commitments are referred to as derivative loan commitments if the loan that will result from exercise of the commitment will be held for sale upon funding. These commitments are recognized at fair value on the consolidated balance sheet in other assets and other liabilities with changes in their fair values recorded within mortgage banking income. In addition, the Company has elected the fair value option to carry loans held for sale at fair value. The change in fair value of loans held for sale is recorded in current period earnings as a component of mortgage banking income in accordance with the Company's fair value election. The fair value of loans held for sale decreased by $194,000 and $75,000 for the three months ended September 30, 2022 and 2021, respectively. The fair value of loans held for sale decreased by $620,000 and $1.5 million for the nine months ended September 30, 2022 and 2021, respectively. These amounts were offset in earnings by the change in the fair value of mortgage derivatives. Outstanding loan commitments expose the Company to the risk that the price of the loans arising from exercise of the loan commitment might change from inception of the rate lock to funding of the loan due to changes in mortgage interest rates. If interest rates increase, the value of these loan commitments decreases. Conversely, if interest rates decrease, the value of these loan commitments increases. To protect against the price risk inherent in derivative loan commitments, the Company utilizes both "mandatory delivery" and "best efforts" forward loan sale commitments to mitigate the risk of potential decreases in the values of loans that would result from the exercise of the derivative loan commitments. Mandatory delivery contracts are accounted for as derivative instruments. Included in the mandatory delivery forward commitments are To Be Announced securities ("TBAs"). Certain assumptions, including pull through rates and rate lock periods, are used in managing the existing and future hedges. The accuracy of underlying assumptions will impact the ultimate effectiveness of any hedging strategies. With mandatory delivery contracts, the Company commits to deliver a certain principal amount of mortgage loans to an investor at a specified price on or before a specified date. If the Company fails to deliver the amount of mortgages necessary to fulfill the commitment by the specified date, it is obligated to pay a "pair-off" fee, based on then-current market prices, to the investor/counterparty to compensate the investor for the shortfall. Generally, the Company makes this type of commitment once mortgage loans have been funded and are held for sale, in order to minimize the risk of failure to deliver the requisite volume of loans to the investor and paying pair-off fees as a result. The Company also sells TBA securities to offset potential changes in the fair value of derivative loan commitments. Generally, the Company sells TBA securities by entering into derivative loan commitments for settlement in 30 to 90 days. The Company expects that mandatory delivery contracts, including TBA securities, will experience changes in fair value opposite to the changes in the fair value of derivative loan commitments. With best effort contracts, the Company commits to deliver an individual mortgage loan of a specified principal amount and quality to an investor if the loan to the underlying borrower closes. Generally, best efforts cash contracts have no pair off risk regardless of market movement. The price the investor will pay the seller for an individual loan is specified prior to the loan being funded (e.g., on the same day the lender commits to lend funds to a potential borrower). The Company expects that these best efforts forward loan sale commitments will experience a net neutral shift in fair value with related derivative loan commitments. The aggregate amount of net realized gains on sales of such loans included within mortgage banking income was $229,000 and $4.9 million for the three months ended September 30, 2022 and 2021, respectively, and $550,000 and $17.2 million for the nine months ended September 30, 2022 and 2021, respectively. Balance Sheet Offsetting The Company does not offset fair value amounts recognized for derivative instruments. The Company does net the amount recognized for the right to reclaim cash collateral against the obligation to return cash collateral arising from derivative instruments executed with the same counterparty under a master netting arrangement. Collateral legally required to be maintained at dealer banks by the Company is monitored and adjusted as necessary. A daily settlement occurs through the CME for changes in the fair value of centrally cleared derivatives. Not all of the derivatives are required to be cleared through the daily clearing agent. As a result, the total fair values of loan level derivative assets and liabilities recognized on the Company's financial statements are not equal and offsetting. The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the balance sheet and the potential effect of netting arrangements on its financial position, at the dates indicated: Asset Derivatives (1) Liability Derivatives (2) Fair Value at Fair Value at Fair Value at Fair Value at September 30 December 31 September 30 December 31 (Dollars in thousands) Derivatives designated as hedges Interest rate derivatives $ — $ 21,951 (3) $ 53,740 (4) $ 1,032 (4) Derivatives not designated as hedges Customer Related Positions Loan level derivatives 127,625 (3) 68,726 (3) 127,627 (4) 68,724 (4) Foreign exchange contracts 16,520 6,147 16,433 6,147 Risk participation agreements 64 279 15 55 Mortgage Derivatives Interest rate lock commitments 6 753 16 — Forward sale loan commitments 86 56 — — Forward sale hedge commitments 73 — — 57 Total derivatives not designated as hedges 144,374 75,961 144,091 74,983 Total 144,374 97,912 197,831 76,015 Netting Adjustments (5) (62,614) (5,727) 35,293 6,769 Net Derivatives on the Balance Sheet 81,760 92,185 162,538 69,246 Financial instruments (6) 17,744 22,378 17,744 22,378 Cash collateral pledged (received) — — — 33,838 Net Derivative Amounts $ 64,016 $ 69,807 $ 144,794 $ 13,030 (1) All asset derivatives are reflected in other assets on the balance sheet. (2) All liability derivatives are reflected in other liabilities on the balance sheet. (3) Approximately $660,000 of accrued interest receivable is included in the fair value of the loan level derivative assets at September 30, 2022, in comparison to accrued interest receivable of approximately $1.2 million and $1.5 million in included in the fair value of interest rate and loan level derivative assets, respectively, at December 31, 2021. (4) Approximately $36,000 and $660,000 of accrued interest payable is included in the fair value of interest rate and loan level derivative liabilities, respectively, at September 30, 2022. Accrued interest payable of approximately $5,000 and $1.5 million is included in the fair value of the interest rate and loan level derivative liabilities, respectively, at December 31, 2021. (5) Netting adjustments represent the amounts recorded to convert derivative assets and liabilities cleared through CME from a gross basis to a net basis, inclusive of the variation margin payments, in accordance with applicable accounting guidance. As displayed in the table above, derivatives that cleared through the CME were either in a net asset position or a net liability position at September 30, 2022. (6) Reflects offsetting derivative positions with the same counterparty that are not netted on the balance sheet. The table below presents the effect of the Company’s derivative financial instruments included in OCI and current earnings for the periods indicated: Three Months Ended Nine Months Ended September 30 September 30 2022 2021 2022 2021 (Dollars in thousands) Derivatives designated as hedges Loss in OCI on derivatives (effective portion), net of tax $ (27,144) $ (3,383) $ (52,743) $ (11,559) Gain reclassified from OCI into interest income or interest expense (effective portion) $ 407 $ 4,791 $ 8,427 $ 13,869 Derivatives not designated as hedges Changes in fair value of customer related positions Other income $ 26 $ 54 $ 147 $ 137 Other expense (67) (80) (239) (374) Changes in fair value of mortgage derivatives Mortgage banking income 41 (213) (603) (3,840) Total $ — $ (239) $ (695) $ (4,077) The Company's derivative agreements with institutional counterparties contain various credit-risk related contingent provisions, such as requiring the Company to maintain a well-capitalized capital position. If the Company fails to meet these conditions, the counterparties could request the Company make immediate payment or demand that the Company provide immediate and ongoing full collateralization on derivative positions in net liability positions. All derivative instruments with credit-risk contingent features were in a net asset position at September 30, 2022. At December 31, 2021, the aggregate fair value of all derivative instruments with credit-risk related contingent features that were in a net liability position was $34.8 million. Although none of the contingency provisions have applied as of September 30, 2022 and December 31, 2021, the Company posted collateral to offset the net liability exposure with institutional counterparties at December 31, 2021. By using derivatives, the Company is exposed to credit risk to the extent that counterparties to the derivative contracts do not perform as required. Should a counterparty fail to perform under the terms of a derivative contract, the Company's credit exposure on interest rate swaps is limited to the net positive fair value and accrued interest of all swaps with each counterparty. The Company seeks to minimize counterparty credit risk through credit approvals, limits, monitoring procedures, and obtaining collateral, where appropriate. Institutional counterparties must have an investment grade credit rating and be approved by the Company's Board of Directors. As such, management believes the risk of incurring credit losses on derivative contracts with institutional counterparties is remote. The Company's exposure relating to institutional counterparties was $127.6 million and $28.3 million at September 30, 2022 and December 31, 2021, respectively. The Company’s exposure relating to customer counterparties was approximately $8,000 and $62.4 million at September 30, 2022 and December 31, 2021, respectively. Credit exposure may be reduced by the value of collateral pledged by the counterparty.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS Fair value is a market-based measure considered from the perspective of a market participant rather than an entity-specific measure. Therefore, even when market assumptions are not readily available, the assumptions applied by the Company when determining fair value reflect those that the Company determines market participants would use to price the asset or liability at the measurement date. If there has been a significant decrease in the volume and level of activity for the asset or liability, regardless of the valuation technique(s) used, the objective of a fair value measurement remains the same. Fair value is the price that would be received if the asset were to be sold or that would be or paid if the liability were to be transferred in an orderly market transaction (that is, not a forced liquidation or distressed sale) between market participants at the measurement date under current market conditions. When determining fair value, the Company considers pricing information and other inputs that are current as of the measurement date. In periods of market dislocation, the observability of prices and other inputs may be reduced for certain instruments, or not available at all. The unavailability or reduced availability of pricing or other input information could cause an instrument to be reclassified from one level to another. The Fair Value Measurements and Disclosures Topic of the FASB ASC defines fair value and establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under the Fair Value Measurements and Disclosures Topic of the FASB ASC are described below: Level 1 – Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 2 – Valuations based on quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly. Level 3 – Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation Techniques There have been no changes in the valuation techniques used during the nine months ended September 30, 2022. Securities Trading and Equity Securities These equity securities are valued based on market quoted prices. These securities are categorized in Level 1 as they are actively traded and no valuation adjustments have been applied. U.S. Government Agency and U.S. Treasury Securities Fair value is estimated using either multi-dimensional spread tables or benchmarks. The inputs used include benchmark yields, reported trades, and broker/dealer quotes. These securities are classified as Level 2. Agency Mortgage-Backed Securities Fair value is estimated using either a matrix or benchmarks. The inputs used include benchmark yields, reported trades, broker/dealer quotes, and issuer spreads. These securities are categorized as Level 2. Agency Collateralized Mortgage Obligations and Small Business Administration Pooled Securities The valuation model for these securities is volatility-driven and ratings based, and uses multi-dimensional spread tables. The inputs used include benchmark yields, reported trades, new issue data, broker dealer quotes, and collateral performance. If there is at least one significant model assumption or input that is not observable, these securities are categorized as Level 3 within the fair value hierarchy; otherwise, they are classified as Level 2. State, County, and Municipal Securities The fair value is estimated using a valuation matrix with inputs including bond interest rate tables, recent transactions, and yield relationships. These securities are categorized as Level 2. Single and Pooled Issuer Trust Preferred Securities The fair value of trust preferred securities, including pooled and single issuer preferred securities, is estimated using external pricing models, discounted cash flow methodologies or similar techniques. The inputs used in these valuations include benchmark yields, reported trades, new issue data, broker dealer quotes, and collateral performance. If there is at least one significant model assumption or input that is not observable, these securities are classified as Level 3 within the fair value hierarchy; otherwise, they are classified as Level 2. Loans Held for Sale The Company has elected the fair value option to account for originated closed loans intended for sale. The fair value is measured on an individual loan basis using quoted market prices and when not available, comparable market value or discounted cash flow analysis may be utilized. These assets are typically classified as Level 2. Derivative Instruments Derivatives The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilizes. The Company incorporates credit valuation adjustments to appropriately reflect nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings. Additionally, in conjunction with fair value measurement guidance, the Company has made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio. Although the Company has determined that the majority of the inputs used to value its interest rate derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its interest rate derivatives and risk participation agreements may also utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by the Company and its counterparties. However, as of September 30, 2022 and December 31, 2021, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are properly classified as Level 2. Mortgage Derivatives The fair value of mortgage derivatives is determined based on current market prices for similar assets in the secondary market and, therefore, classified as Level 2 within the fair value hierarchy. Individually Assessed Collateral Dependent Loans In accordance with the CECL standard, expected credit losses on individually assessed loans deemed to be collateral dependent are valued based upon the lower of amortized cost or fair value of the underlying collateral less costs to sell. The inputs used in the appraisals of the collateral are not always observable, and in such cases the loans may be classified as Level 3 within the fair value hierarchy; otherwise, they are classified as Level 2. Other Real Estate Owned and Other Foreclosed Assets Other Real Estate Owned ("OREO") and Other Foreclosed Assets are valued at the lower of cost or fair value of the property, less estimated costs to sell. The fair values are generally estimated based upon recent appraisal values of the property less costs to sell the property. Certain inputs used in appraisals are not always observable, and therefore OREO and Other Foreclosed Assets may be classified as Level 3 within the fair value hierarchy. Goodwill and Other Intangible Assets Goodwill and other intangible assets are subject to impairment testing. The Company conducts an annual impairment test of goodwill in the third quarter of each year, or more frequently if necessary. Other intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. To estimate the fair value of goodwill and, if necessary, other intangible assets, the Company utilizes both a comparable analysis of relevant price multiples in recent market transactions and a discounted cash flow analysis. Both valuation models require a significant degree of management judgment. In the event the fair value as determined by the valuation model is less than the carrying value, the intangibles may be impaired. If the impairment testing resulted in impairment, the Company would classify the impaired goodwill and other intangible assets subjected to nonrecurring fair value adjustments as Level 3. Assets and liabilities measured at fair value on a recurring and nonrecurring basis were as follows at the dates indicated: Fair Value Measurements at Reporting Date Using Balance Quoted Prices Significant Significant September 30, 2022 (Dollars in thousands) Recurring fair value measurements Assets Trading securities $ 3,538 $ 3,538 $ — $ — Equity securities 20,439 20,439 — — Securities available for sale U.S. government agency securities 199,942 — 199,942 — U.S. treasury securities 784,458 — 784,458 — Agency mortgage-backed securities 344,153 — 344,153 — Agency collateralized mortgage obligations 40,787 — 40,787 — State, county, and municipal securities 187 — 187 — Single issuer trust preferred securities issued by banks and insurers 489 — 489 — Pooled trust preferred securities issued by banks and insurers 999 — 999 — Small business administration pooled securities 54,496 — 54,496 — Loans held for sale 5,100 — 5,100 — Derivative instruments 144,374 — 144,374 — Liabilities Derivative instruments 197,831 — 197,831 — Total recurring fair value measurements $ 1,401,131 $ 23,977 $ 1,377,154 $ — Nonrecurring fair value measurements Assets Individually assessed collateral dependent loans (1) $ 13,020 $ — $ — $ 13,020 Total nonrecurring fair value measurements $ 13,020 $ — $ — $ 13,020 Fair Value Measurements at Reporting Date Using Balance Quoted Prices Significant Significant December 31, 2021 (Dollars in thousands) Recurring fair value measurements Assets Trading securities $ 3,720 $ 3,720 $ — $ — Equity securities 23,173 23,173 — — Securities available for sale U.S. government agency securities 215,482 — 215,482 — U.S. treasury securities 861,448 — 861,448 — Agency mortgage-backed securities 363,933 — 363,933 — Agency collateralized mortgage obligations 79,677 — 79,677 — State, county, and municipal securities 203 — 203 — Single issuer trust preferred securities issued by banks and insurers 491 — 491 — Pooled trust preferred securities issued by banks and insurers 1,000 — 1,000 — Small business administration pooled securities 48,914 — 48,914 — Loans held for sale 24,679 — 24,679 — Derivative instruments 97,912 — 97,912 — Liabilities Derivative instruments 76,015 — 76,015 — Total recurring fair value measurements $ 1,644,617 $ 26,893 $ 1,617,724 $ — Nonrecurring fair value measurements Assets Individually assessed collateral dependent loans (1) $ 1,174 $ — $ — $ 1,174 Total nonrecurring fair value measurements $ 1,174 $ — $ — $ 1,174 (1) The carrying value of individually assessed collateral dependent loans is based on the lower of amortized cost or fair value of the underlying collateral less costs to sell. The fair value of the underlying collateral is generally determined through independent appraisals, which generally include various Level 3 inputs which are not identifiable. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of these possible adjustments may vary. The estimated fair values and related carrying amounts for assets and liabilities for which fair value is only disclosed are shown below at the dates indicated: Fair Value Measurements at Reporting Date Using Carrying Fair Quoted Prices Significant Significant September 30, 2022 (Dollars in thousands) Financial assets Securities held to maturity (a) U.S. government agency securities $ 31,696 $ 29,303 $ — $ 29,303 $ — U.S. treasury securities 100,615 87,992 — 87,992 — Agency mortgage-backed securities 892,102 802,093 — 802,093 — Agency collateralized mortgage obligations 553,995 476,970 — 476,970 — Single issuer trust preferred securities issued by banks 1,500 1,508 — 1,508 — Small business administration pooled securities 117,727 112,119 — 112,119 — Loans, net of allowance for credit losses (b) 13,540,017 13,208,966 — — 13,208,966 Federal Home Loan Bank stock (c) 5,218 5,218 — 5,218 — Cash surrender value of life insurance policies (d) 293,126 293,126 — 293,126 — Financial liabilities Deposit liabilities, other than time deposits (e) $ 15,160,375 $ 15,160,375 $ — $ 15,160,375 $ — Time certificates of deposits (f) 1,178,619 1,147,506 — 1,147,506 — Federal Home Loan Bank borrowings (f) 643 571 — 571 — Junior subordinated debentures (g) 62,855 59,770 — 59,770 — Subordinated debentures (f) 49,862 44,066 — — 44,066 Fair Value Measurements at Reporting Date Using Carrying Fair Quoted Prices Significant Significant December 31, 2021 (Dollars in thousands) Financial assets Securities held to maturity (a) U.S. government agency securities $ 32,987 $ 32,546 $ — $ 32,546 $ — U.S. treasury securities 102,560 102,242 — 102,242 — Agency mortgage-backed securities 493,012 497,236 — 497,236 — Agency collateralized mortgage obligations 415,736 408,845 — 408,845 — Single issuer trust preferred securities issued by banks 1,500 1,508 — 1,508 — Small business administration pooled securities 21,023 21,756 — 21,756 — Loans, net of allowance for credit losses (b) 13,439,190 13,389,515 — — 13,389,515 Federal Home Loan Bank stock (c) 11,407 11,407 — 11,407 — Cash surrender value of life insurance policies (d) 289,304 289,304 — 289,304 — Financial liabilities Deposit liabilities, other than time deposits (e) $ 15,385,894 $ 15,385,894 $ — $ 15,385,894 $ — Time certificates of deposits (f) 1,531,150 1,529,857 — 1,529,857 — Federal Home Loan Bank borrowings (f) 25,667 25,663 — 25,663 — Long-term borrowings (f) 14,063 13,989 — 13,989 — Junior subordinated debentures (g) 62,853 67,019 — 67,019 — Subordinated debentures (f) 49,791 45,532 — — 45,532 (a) The fair values presented are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments and/or discounted cash flow analysis. (b) Fair value of loans is measured using the exit price valuation method, determined primarily by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities or cash flows, while incorporating liquidity and credit assumptions. Additionally, this amount excludes individually assessed collateral dependent loans, which are deemed to be marked to fair value on a nonrecurring basis. (c) Federal Home Loan Bank stock has no quoted market value and is carried at cost; therefore, the carrying amount approximates fair value. (d) Cash surrender value of life insurance policies is recorded at its cash surrender value (or the amount that can be realized upon surrender of the policy), therefore, carrying amount approximates fair value. (e) Fair value of demand deposits, savings and interest checking accounts and money market deposits is the amount payable on demand at the reporting date. (f) Fair value was determined by discounting anticipated future cash payments using rates currently available for instruments with similar remaining maturities. (g) Fair value was determined based upon market prices of securities with similar terms and maturities. This summary excludes certain financial assets and liabilities for which the carrying value approximates fair value. For financial assets, these may include cash and due from banks, federal funds sold and short-term investments. For financial liabilities, these may include federal funds purchased. These instruments would all be considered to be classified as Level 1 within the fair value hierarchy. Also excluded from the summary are financial instruments measured at fair value on a recurring and nonrecurring basis, as previously described. The Company considers its current use of financial instruments to be the highest and best use of the instruments.

Revenue Recognition (Notes)

Revenue Recognition (Notes)	9 Months Ended
	Sep. 30, 2022
Revenue Recognition [Abstract]
Revenue from Contract with Customer [Text Block]	REVENUE RECOGNITION A portion of the Company's noninterest income is derived from contracts with customers, and as such, the revenue recognized depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The Company considers the terms of the contract and all relevant facts and circumstances when applying this guidance. To ensure its alignment with this core principle, the Company measures revenue and the timing of recognition by applying the following five steps: 1. Identify the contract(s) with customers 2. Identify the performance obligations 3. Determine the transaction price 4. Allocate the transaction price to the performance obligations 5. Recognize revenue when (or as) the entity satisfies a performance obligation The Company has disaggregated its revenue from contracts with customers into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. The following table presents the revenue streams that the Company has disaggregated as of the periods indicated: Three Months Ended Nine Months Ended September 30 September 30 September 30 September 30 (Dollars in thousands) Deposit account fees (inclusive of cash management fees) $ 6,261 $ 4,298 $ 17,582 $ 11,704 Interchange fees 2,833 2,223 8,043 6,267 ATM fees 1,066 817 2,900 2,177 Investment management - wealth management and advisory services 7,834 8,147 23,563 23,576 Investment management - retail investments and insurance revenue 602 1,027 2,875 2,774 Merchant processing income 412 365 1,140 1,024 Credit card income 495 334 1,341 883 Other noninterest income 1,782 1,362 4,650 3,732 Total noninterest income in-scope of ASC 606 21,285 18,573 62,094 52,137 Total noninterest income out-of-scope of ASC 606 6,910 7,884 20,271 24,533 Total noninterest income $ 28,195 $ 26,457 $ 82,365 $ 76,670 In each of the revenue streams identified above, there were no significant judgments made in determining or allocating the transaction price, as the consideration and service requirements are generally explicitly identified in the associated contracts. Additional information related to each of the revenue streams is further noted below. Deposit Account Fees The Company offers various deposit account products to its customers governed by specific deposit agreements applicable to either personal customers or business customers. These agreements identify the general conditions and obligations of both parties, and include standard information regarding deposit account related fees. Deposit account services include providing access to deposit accounts as well as access to the various deposit transactional services of the Company. These transactional services are primarily those that are identified in the standard fee schedule, and include, but are not limited to, services such as overdraft protection, wire transfer, and check collection. Revenue is recognized in conjunction with the various services being provided. For example, the Company may assess monthly fixed service fees associated with the customer having access to a deposit account, which can vary depending on the account type and daily account balance. In addition, the Company may also assess separate fixed fees associated with and at the time specific transactions are entered into by the customer. As such, the Company considers its performance obligations to be met concurrently with providing the account access or completing the requested deposit transaction. Cash Management Cash management services are a subset of the deposit account fees revenue stream. These services primarily include ACH transaction processing, positive pay and remote deposit services. These services are also governed by separate agreements entered into with the customer. The fee arrangement for these services is structured to assess fees under one of two scenarios, either a per transaction fee arrangement or an earnings credit analysis arrangement. Under the per transaction fee arrangement, fixed fees are assessed concurrently with customers executing the transactions, and as such, the Company considers its performance obligations to be met concurrently with completing the requested transaction. Under the earnings credit analysis arrangement, the Company provides a monthly earnings credit to the customer that is negotiated and determined based on various factors. The credit is then available to absorb the per transaction fees that are assessed on the customer's deposit account activity for the month. Any amount of the transactional fees in excess of the earnings credit is recognized as revenue in that month. Interchange Fees The Company earns interchange revenue from its issuance of credit and debit cards granted through its membership in various card payment networks. The Company provides credit cards and debit cards to its customers which are authorized and settled through these payment networks, and in exchange, the Company earns revenue as determined by each payment network's interchange program. The revenue is recognized concurrently with the settlement of card transactions within each network. ATM Fees The Company deploys automated teller machines (ATMs) as part of its overall branch network. Certain transactions performed at the ATMs require customers to acknowledge and pay a fee for the requested service. Certain ATM fees are disclosed in the deposit account agreement fee schedules, whereas those assessed to non-Rockland Trust deposit holders are solely determined during the transaction at the machine. The ATM fee is a fixed dollar per transaction amount, and as such, is recognized concurrently with the overall daily processing and settlement of the ATM activity. Investment Management - Wealth Management and Advisory Services The Company offers investment management and trust services to individuals, institutions, small businesses and charitable institutions. Each investment management product is governed by its own contract along with a separate identifiable fee schedule unique to that product. The Company also offers additional services, such as estate settlement, financial planning, tax services and other special services quoted at the client's request. The asset management and/or custody fees are based upon a percentage of the monthly valuation of the principal assets in the customer's account, whereas fees for additional or special services are fixed in nature and are charged as services are rendered. As the fees are dependent on assets under management, which are susceptible to market factors outside of the Company's control, this variable consideration is constrained and therefore no revenue is estimated at contract initiation. As such, all revenue is recognized in correlation to the monthly management fee determinations or as transactional services are provided. Due to the fact that payments are primarily made subsequent to the valuation period, the Company records a receivable for revenue earned but not received. The following table provides the amount of investment management revenue earned but not received as of the dates indicated: September 30, 2022 December 31, 2021 (Dollars in thousands) Receivables, included in other assets $ 4,401 $ 5,385 Investment Management - Retail Investments and Insurance Revenue The Company offers the sale of mutual fund shares, unit investment trust shares, general securities, fixed and variable annuities and life insurance products through registered representatives who are both employed by the Company and licensed and contracted with various broker general agents to offer these products to the Company’s customer base. As such, the Company performs these services as an agent and earns a fixed commission on the sales of these products and services. To a lesser degree, production bonus commissions can also be earned based upon the Company meeting certain volume thresholds. In general, the Company recognizes commission revenue at the point of sale, and for certain insurance products, may also earn and recognize annual residual commissions commensurate with annual premiums being paid. Merchant Processing Income The Company refers customers to third party merchant processing partners in exchange for commission and fee income. The income earned is comprised of multiple components, including a fixed referral fee per each referred customer, a rebate amount determined primarily as a percentage of net revenue earned by the third party from services provided to each referred customer, and overall production bonus commissions if certain new account production thresholds are met. Merchant processing income is recognized in conjunction with either completing the referral to earn the fixed fee amount or as the merchant activity is processed to derive the Company's rebate and/or production bonus amounts. Credit Card Income The Company provides consumer and business credit card solutions to its customers by soliciting new accounts on behalf of a third party credit card provider in exchange for a fee. The income earned is comprised of new account incentive payments as well as a percentage of interchange income earned by the third party provider offering the consumer and business purpose revolving credit accounts. The credit card income is recognized in conjunction with the establishment of each new credit card member or as the interchange is earned by the third party in connection with net purchase transactions made by the credit card member. Other Noninterest Income The Company earns various types of other noninterest income that fall within the scope of the new revenue recognition rules, and have been aggregated into one general revenue stream in the table noted above. This amount includes, but is not limited to, the following types of revenue with customers: Safe Deposit Rent The Company rents out the use of safe deposit boxes to its customers, which can be accessed when the bank is open for business. The safe deposit box rental fee is paid upfront and is recognized as revenue ratably over the annual term of the contract. 1031 Exchange Fee Revenue The Company provides like-kind exchange services pursuant to Section 1031 of the Internal Revenue Code. Fee income is recognized in conjunction with completing the exchange transactions. Foreign Currency

Comprehensive Income_Loss

Comprehensive Income/Loss	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
COMPREHENSIVE INCOME/LOSS	OTHER COMPREHENSIVE INCOME (LOSS) The following tables present a reconciliation of the changes in the components of other comprehensive income (loss) for the periods indicated, including the amount of income tax (expense) benefit allocated to each component of other comprehensive income (loss): Three Months Ended Nine Months Ended Pre-Tax Tax (Expense) After Tax Pre-Tax Tax (Expense) After Tax (Dollars in thousands) Change in fair value of securities available for sale $ (55,461) $ 12,879 $ (42,582) $ (167,814) $ 38,942 $ (128,872) Less: net security losses reclassified into other noninterest expense — — — — — — Net change in fair value of securities available for sale (55,461) 12,879 (42,582) (167,814) 38,942 (128,872) Change in fair value of cash flow hedges (37,357) 10,505 (26,852) (64,963) 18,277 (46,686) Less: net cash flow hedge gains reclassified into interest income or interest expense 407 (115) 292 8,427 (2,370) 6,057 Net change in fair value of cash flow hedges (37,764) 10,620 (27,144) (73,390) 20,647 (52,743) Amortization of net actuarial losses 159 (45) 114 476 (134) 342 Amortization of net prior service costs 10 (3) 7 29 (8) 21 Net change in other comprehensive income for defined benefit postretirement plans (1) 169 (48) 121 505 (142) 363 Total other comprehensive loss $ (93,056) $ 23,451 $ (69,605) $ (240,699) $ 59,447 $ (181,252) Three Months Ended Nine Months Ended Pre-Tax Tax (Expense) After Tax Pre-Tax Tax (Expense) After Tax (Dollars in thousands) Change in fair value of securities available for sale $ (10,337) $ 2,440 $ (7,897) $ (15,589) $ 3,711 $ (11,878) Less: net security losses reclassified into other noninterest expense — — — — — — Net change in fair value of securities available for sale (10,337) 2,440 (7,897) (15,589) 3,711 (11,878) Change in fair value of cash flow hedges 84 (23) 61 (2,214) 624 (1,590) Less: net cash flow hedge gains reclassified into interest income or interest expense 4,791 (1,347) 3,444 13,869 (3,900) 9,969 Net change in fair value of cash flow hedges (4,707) 1,324 (3,383) (16,083) 4,524 (11,559) Net unamortized gain related to defined benefit pension and other postretirement adjustments arising during the period — — — 653 (184) 469 Amortization of net actuarial losses 346 (97) 249 1,037 (291) 746 Amortization of net prior service costs 44 (13) 31 131 (37) 94 Net change in other comprehensive income for defined benefit postretirement plans (1) 390 (110) 280 1,821 (512) 1,309 Total other comprehensive loss $ (14,654) $ 3,654 $ (11,000) $ (29,851) $ 7,723 $ (22,128) (1) The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 14 "Employee Benefit Plans" within the Notes to the Consolidated Financial Statements included in Item 8 of the Company's 2021 Form 10-K. Information on the Company’s accumulated other comprehensive income (loss), net of tax, is comprised of the following components as of the dates indicated: Unrealized Gain (Loss) Unrealized Gain (Loss) on Cash Flow Hedge Defined Benefit Postretirement Plans Accumulated Other Comprehensive Income (Loss) (Dollars in thousands) 2022 Beginning balance: January 1, 2022 $ (9,667) $ 14,137 $ (2,287) $ 2,183 Net change in other comprehensive income (loss) (128,872) (52,743) 363 (181,252) Ending balance: September 30, 2022 $ (138,539) $ (38,606) $ (1,924) $ (179,069) 2021 Beginning balance: January 1, 2021 $ 13,255 $ 33,276 $ (5,836) $ 40,695 Net change in other comprehensive income (loss) (11,878) (11,559) 1,309 (22,128) Ending balance: September 30, 2021 $ 1,377 $ 21,717 $ (4,527) $ 18,567

Commitments and contingencies

Commitments and contingencies	9 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	COMMITMENTS AND CONTINGENCIES Financial Instruments with Off-Balance Sheet Risk In the normal course of business, the Company enters into various transactions to meet the financing needs of its customers, which, in accordance with GAAP, are not included in its consolidated balance sheets. These transactions include commitments to extend credit and standby letters of credit, and loan exposures with recourse, which involve, to varying degrees, elements of credit risk and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. The Company minimizes its exposure to loss under these commitments by subjecting them to credit approval and monitoring procedures. The Company enters into contractual commitments to extend credit, normally with fixed expiration dates or termination clauses, at specified rates and for specific purposes. Substantially all of these commitments to extend credit are contingent upon customers maintaining specific credit standards at the time of loan funding. The Company has certain loan exposures for which there is recourse. These loan relationships could require the Company to repurchase or cover certain losses per agreements for certain loans that are either sold or referred to third parties. Standby letters of credit are written conditional commitments issued to guarantee the performance of a customer to a third party. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Company would be required to fund the commitment. The maximum potential amount of future payments the Company could be required to make is represented by the contractual amount of the commitment. If the commitment were funded, the Company would be entitled to seek recovery from the customer. The Company’s policies generally require that standby letter of credit arrangements contain security and debt covenants similar to those contained in loan agreements. The fees collected in connection with the issuance of standby letters of credit are representative of the fair value of the Company's obligation undertaken in issuing the guarantee. In accordance with applicable accounting standards related to guarantees, fees collected in connection with the issuance of standby letters of credit are deferred. The fees are then recognized in income proportionately over the life of the standby letter of credit agreement. The deferred standby letter of credit fees represent the fair value of the Company's potential obligations under the standby letter of credit guarantees. The following table summarizes the above financial instruments at the dates indicated: September 30, 2022 December 31, 2021 (Dollars in thousands) Commitments to extend credit $ 4,552,576 $ 4,535,895 Standby letters of credit 25,565 24,412 Deferred standby letter of credit fees 187 124 Loan exposures sold with recourse 171,437 202,717 Lease Commitments The Company leases office space, space for ATM locations, and certain branch locations under noncancellable operating leases. Several of these leases contain renewal options to extend lease terms for a period of 1 to 20 years. During the first quarter of 2022, the Company recognized approximately $4.4 million in costs associated with several terminated leased locations acquired from Meridian that were subsequently exited. These costs are reflected within merger and acquisition expense in the Consolidated Statement of Income. There has been no significant change in the future minimum lease payments payable by the Company since December 31, 2021. See the Company's 2021 Form 10-K for information regarding leases and other commitments. Other Contingencies At September 30, 2022, the Bank was involved in pending lawsuits that arose in the ordinary course of business. Management has reviewed these pending lawsuits with legal counsel and has taken into consideration the view of counsel as to their outcome. In the opinion of management, the final disposition of pending lawsuits is not expected to have a material adverse effect on the Company’s financial position or results of operations.

Basis of Presentation Basis of

Basis of Presentation Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Accounting Policy	BASIS OF PRESENTATION Independent Bank Corp. (the “Company”) is a state chartered, federally registered bank holding company, incorporated in 1985. The Company is the sole stockholder of Rockland Trust Company (“Rockland Trust” or the “Bank”), a Massachusetts trust company chartered in 1907. All material intercompany balances and transactions have been eliminated in consolidation. Certain previously reported amounts have been reclassified to conform to the current year’s presentation. The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation of the financial statements, primarily consisting of normal recurring adjustments, have been included. Results for the nine months ended September 30, 2022 are not necessarily indicative of the results that may be expected for the year ending December 31, 2022 or any other interim period.

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Schedule of Equity securities gains and losses [Table Text Block]	Three Months Ended Nine Months Ended September 30 September 30 2022 2021 2022 2021 Dollars in thousands Net gains (losses) recognized during the period on equity securities $ (742) $ (169) (2,819) 695 Less: net gains recognized during the period on equity securities sold during the period — 50 8 191 Unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting date $ (742) $ (219) $ (2,827) $ 504
Debt Securities, Available-for-sale [Table Text Block]	The following table summarizes the amortized cost, allowance for credit losses, and fair value of available for sale securities and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) as of the dates indicated: September 30, 2022 December 31, 2021 Amortized Gross Gross Unrealized Allowance for credit losses Fair Amortized Gross Gross Unrealized Allowance for credit losses Fair (Dollars in thousands) Available for sale securities U.S. government agency securities $ 231,122 $ — $ (31,180) $ — $ 199,942 $ 217,393 $ 990 $ (2,901) $ — $ 215,482 U.S. treasury securities 873,891 — (89,433) — 784,458 873,467 172 (12,191) — 861,448 Agency mortgage-backed securities 393,296 50 (49,193) — 344,153 364,955 4,512 (5,534) — 363,933 Agency collateralized mortgage obligations 43,672 5 (2,890) — 40,787 78,966 1,282 (571) — 79,677 State, county, and municipal securities 193 — (6) — 187 192 11 — — 203 Single issuer trust preferred securities issued by banks 489 — — — 489 489 2 — — 491 Pooled trust preferred securities issued by banks and insurers 1,202 — (203) — 999 1,199 — (199) — 1,000 Small business administration pooled securities 62,048 — (7,552) — 54,496 47,075 1,839 — — 48,914 Total available for sale securities $ 1,605,913 $ 55 $ (180,457) $ — $ 1,425,511 $ 1,583,736 $ 8,808 $ (21,396) $ — $ 1,571,148
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block]	These available for sale securities are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position: September 30, 2022 Less than 12 months 12 months or longer Total # of Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) U.S. government agency securities 9 $ 80,353 $ (11,483) $ 119,589 $ (19,697) $ 199,942 $ (31,180) U.S. treasury securities 18 86,592 (12,426) 697,866 (77,007) 784,458 (89,433) Agency mortgage-backed securities 142 263,358 (29,512) 79,167 (19,681) 342,525 (49,193) Agency collateralized mortgage obligations 11 39,291 (2,890) — — 39,291 (2,890) State, county, and municipal securities 1 187 (6) — — 187 (6) Pooled trust preferred securities issued by banks and insurers 1 — — 999 (203) 999 (203) Small business administration pooled securities 8 36,885 (3,768) 17,611 (3,784) 54,496 (7,552) Total impaired available for sale securities 190 $ 506,666 $ (60,085) $ 915,232 $ (120,372) $ 1,421,898 $ (180,457) December 31, 2021 Less than 12 months 12 months or longer Total # of Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) U.S. government agency securities 6 $ 160,913 $ (2,901) $ — $ — $ 160,913 $ (2,901) U.S. treasury securities 17 811,993 (12,191) — — 811,993 (12,191) Agency mortgage-backed securities 12 214,678 (5,534) — — 214,678 (5,534) Agency collateralized mortgage obligations 1 22,960 (571) — — 22,960 (571) Pooled trust preferred securities issued by banks and insurers 1 — — 1,000 (199) 1,000 (199) Total impaired available for sale securities 37 $ 1,210,544 $ (21,197) $ 1,000 $ (199) $ 1,211,544 $ (21,396)
Debt Securities, Held-to-maturity [Table Text Block]	The following table summarizes the amortized cost, fair value and allowance for credit losses of held to maturity securities and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) as of the dates indicated: September 30, 2022 December 31, 2021 Amortized Gross Gross Unrealized Allowance for credit losses Fair Amortized Gross Gross Unrealized Allowance for credit losses Fair (Dollars in thousands) U.S. government agency securities $ 31,696 $ — $ (2,393) $ — $ 29,303 $ 32,987 $ — $ (441) $ — $ 32,546 U.S. treasury securities 100,615 — (12,623) — 87,992 102,560 6 (324) — 102,242 Agency mortgage-backed securities 892,102 149 (90,158) — 802,093 493,012 8,495 (4,271) — 497,236 Agency collateralized mortgage obligations 553,995 — (77,025) — 476,970 415,736 3,232 (10,123) — 408,845 Single issuer trust preferred securities issued by banks 1,500 8 — — 1,508 1,500 8 — — 1,508 Small business administration pooled securities 117,727 12 (5,620) — 112,119 21,023 733 — — 21,756 Total held to maturity securities $ 1,697,635 $ 169 $ (187,819) $ — $ 1,509,985 $ 1,066,818 $ 12,474 $ (15,159) $ — $ 1,064,133
Schedule of contractual maturities of securities [Table Text Block]	A schedule of the contractual maturities of available for sale and held to maturity securities as of September 30, 2022 is presented below: Due in one year or less Due after one year to five years Due after five to ten years Due after ten years Total Amortized Fair Amortized Fair Amortized Fair Amortized Fair Amortized Fair (Dollars in thousands) Available for sale securities U.S. government agency securities $ — $ — $ 68,007 $ 60,786 $ 163,115 $ 139,156 $ — $ — $ 231,122 $ 199,942 U.S. treasury securities — — 691,691 627,786 182,200 156,672 — — 873,891 784,458 Agency mortgage-backed securities 19,658 19,617 70,984 66,817 148,475 126,625 154,179 131,094 393,296 344,153 Agency collateralized mortgage obligations — — — — — — 43,672 40,787 43,672 40,787 State, county, and municipal securities — — 193 187 — — — — 193 187 Single issuer trust preferred securities issued by banks — — — — — — 489 489 489 489 Pooled trust preferred securities issued by banks and insurers — — — — — — 1,202 999 1,202 999 Small business administration pooled securities — — — — — — 62,048 54,496 62,048 54,496 Total available for sale securities $ 19,658 $ 19,617 $ 830,875 $ 755,576 $ 493,790 $ 422,453 $ 261,590 $ 227,865 $ 1,605,913 $ 1,425,511 Held to maturity securities U.S. government agency securities $ — $ — $ 31,696 $ 29,303 $ — $ — $ — $ — $ 31,696 $ 29,303 U.S. treasury securities — — 49,766 44,047 50,849 43,945 — — 100,615 87,992 Agency mortgage-backed securities 228 226 190,333 182,141 478,115 415,833 223,426 203,893 892,102 802,093 Agency collateralized mortgage obligations — — 29,998 28,550 36,791 31,784 487,206 416,636 553,995 476,970 Single issuer trust preferred securities issued by banks — — — — 1,500 1,508 — — 1,500 1,508 Small business administration pooled securities — — — — — — 117,727 112,119 117,727 112,119 Total held to maturity securities $ 228 $ 226 $ 301,793 $ 284,041 $ 567,255 $ 493,070 $ 828,359 $ 732,648 $ 1,697,635 $ 1,509,985 Total $ 19,886 $ 19,843 $ 1,132,668 $ 1,039,617 $ 1,061,045 $ 915,523 $ 1,089,949 $ 960,513 $ 3,303,548 $ 2,935,496

Loans, Allowance for Credit L_2

Loans, Allowance for Credit Losses and Credit Quality (Tables)	9 Months Ended
	Sep. 30, 2022
Receivables [Abstract]
Financing Receivable, Allowance for Credit Loss [Table Text Block]	The following table summarizes the change in allowance for credit losses by loan category, and bifurcates the amount of loans allocated to each loan category for the period indicated: Three Months Ended September 30, 2022 (Dollars in thousands) Commercial and Commercial Commercial Small Residential Other Consumer Total Allowance for credit losses Beginning balance $ 14,107 $ 83,456 $ 11,710 $ 2,784 $ 19,750 $ 11,740 $ 772 $ 144,319 Charge-offs — (62) — — — — (679) (741) Recoveries 2 330 — 88 — 65 251 735 Provision for (release of) credit losses 6,060 (3,688) (291) (248) 852 (154) 469 3,000 Ending balance (1) $ 20,169 $ 80,036 $ 11,419 $ 2,624 $ 20,602 $ 11,651 $ 812 $ 147,313 Three Months Ended September 30, 2021 (Dollars in thousands) Commercial and Commercial Commercial Small Residential Home Equity Other Consumer Total Allowance for credit losses Beginning balance $ 17,032 $ 44,325 $ 4,865 $ 3,612 $ 12,014 $ 20,087 $ 422 $ 102,357 Charge-offs (1) — — (83) — — (248) (332) Recoveries 1 — — 50 — 49 121 221 Provision for (release of) credit losses (1,018) (6,527) (397) 88 (967) (1,268) 89 (10,000) Ending balance (1) $ 16,014 $ 37,798 $ 4,468 $ 3,667 $ 11,047 $ 18,868 $ 384 $ 92,246 Nine Months Ended September 30, 2022 (Dollars in thousands) Commercial and Commercial Commercial Small Residential Home Equity Other Consumer Total Allowance for credit losses Beginning balance $ 14,402 $ 83,486 $ 12,316 $ 3,508 $ 14,484 $ 17,986 $ 740 $ 146,922 Charge-offs — (62) — (59) — (122) (1,749) (1,992) Recoveries 44 333 — 147 — 105 754 1,383 Provision for (release of) credit losses 5,723 (3,721) (897) (972) 6,118 (6,318) 1,067 1,000 Ending balance (1) $ 20,169 $ 80,036 $ 11,419 $ 2,624 $ 20,602 $ 11,651 $ 812 $ 147,313 Nine Months Ended September 30, 2021 (Dollars in thousands) Commercial and Commercial Commercial Small Residential Other Consumer Total Allowance for credit losses Beginning balance $ 21,086 $ 45,009 $ 5,397 $ 5,095 $ 14,275 $ 22,060 $ 470 $ 113,392 Charge-offs (3,474) — — (184) — (69) (772) (4,499) Recoveries 100 57 — 65 1 107 523 853 Provision for (release of) credit losses (1,698) (7,268) (929) (1,309) (3,229) (3,230) 163 (17,500) Ending balance (1) $ 16,014 $ 37,798 $ 4,468 $ 3,667 $ 11,047 $ 18,868 $ 384 $ 92,246 (1) Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $42.7 million and $36.7 million as of September 30, 2022 and September 30, 2021, respectively.
Financing Receivable Credit Quality Indicators [Table Text Block]	The following table details the amortized cost balances of the Company's loan portfolios, presented by credit quality indicator and origination year as of the dates indicated below: September 30, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Revolving converted to Term Total (1) (Dollars in thousands) Commercial and Pass (2) $ 292,601 $ 149,588 $ 122,752 $ 67,591 $ 82,911 $ 22,943 $ 759,390 $ 3,362 $ 1,501,138 Potential weakness 1,540 973 1,038 1,844 3,955 715 6,557 — 16,622 Definite weakness - loss unlikely 2,485 935 — 39 — 111 27,019 — 30,589 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total commercial and industrial $ 296,626 $ 151,496 $ 123,790 $ 69,474 $ 86,866 $ 23,769 $ 792,966 $ 3,362 $ 1,548,349 Commercial real estate Pass $ 922,772 $ 1,467,370 $ 1,265,711 $ 773,102 $ 733,621 $ 1,976,282 $ 47,317 $ 1,070 $ 7,187,245 Potential weakness 32,579 53,096 41,164 14,147 68,298 205,234 — — 414,518 Definite weakness - loss unlikely 26,684 2,224 4,722 2,585 17,928 21,836 — — 75,979 Partial loss probable — — — — — 175 — — 175 Definite loss — — — — — — — — — Total commercial real estate $ 982,035 $ 1,522,690 $ 1,311,597 $ 789,834 $ 819,847 $ 2,203,527 $ 47,317 $ 1,070 $ 7,677,917 Commercial construction Pass $ 388,627 $ 392,229 $ 231,336 $ 57,768 $ 26,263 $ 7,844 $ 21,457 $ 632 $ 1,126,156 Potential weakness 40,631 — 3,387 — — — — — 44,018 Definite weakness - loss unlikely 2,138 12,845 — — — — — — 14,983 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total commercial construction $ 431,396 $ 405,074 $ 234,723 $ 57,768 $ 26,263 $ 7,844 $ 21,457 $ 632 $ 1,185,157 Small business Pass $ 41,923 $ 46,581 $ 31,968 $ 17,536 $ 10,454 $ 20,227 $ 37,455 $ — $ 206,144 Potential weakness — 163 394 369 193 129 697 — 1,945 Definite weakness - loss unlikely 194 — 442 7 20 224 591 — 1,478 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total small business $ 42,117 $ 46,744 $ 32,804 $ 17,912 $ 10,667 $ 20,580 $ 38,743 $ — $ 209,567 Residential real estate Pass $ 557,643 $ 426,721 $ 196,538 $ 95,689 $ 96,828 $ 582,830 $ — $ — $ 1,956,249 Default — — 676 466 376 1,487 — — 3,005 Total residential real estate $ 557,643 $ 426,721 $ 197,214 $ 96,155 $ 97,204 $ 584,317 $ — $ — $ 1,959,254 Home equity Pass $ 37,298 $ 61,898 $ 56,262 $ 32,761 $ 27,906 $ 124,325 $ 741,952 $ 3,190 $ 1,085,592 Default — — — 122 — 285 1,171 — 1,578 Total home equity $ 37,298 $ 61,898 $ 56,262 $ 32,883 $ 27,906 $ 124,610 $ 743,123 $ 3,190 $ 1,087,170 Other consumer Pass $ 383 $ 2,498 $ 1,969 $ 1,370 $ 380 $ 3,630 $ 22,680 $ — $ 32,910 Default — 14 — — — 11 1 — 26 Total other consumer $ 383 $ 2,512 $ 1,969 $ 1,370 $ 380 $ 3,641 $ 22,681 $ — $ 32,936 Total $ 2,347,498 $ 2,617,135 $ 1,958,359 $ 1,065,396 $ 1,069,133 $ 2,968,288 $ 1,666,287 $ 8,254 $ 13,700,350 September 30, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Revolving converted to Term Total (1) (Dollars in thousands) Commercial and Pass (2) $ 590,532 $ 185,706 $ 97,095 $ 74,381 $ 15,175 $ 16,731 $ 605,718 $ 66 $ 1,585,404 Potential weakness 1,338 9,035 3,286 1,672 980 1,632 10,262 — 28,205 Definite weakness - loss unlikely 16,597 332 793 1,034 2,678 214 5,452 — 27,100 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total commercial and industrial $ 608,467 $ 195,073 $ 101,174 $ 77,087 $ 18,833 $ 18,577 $ 621,432 $ 66 $ 1,640,709 Commercial real estate Pass $ 699,565 $ 1,019,453 $ 606,645 $ 347,874 $ 442,306 $ 794,263 $ 17,068 $ — $ 3,927,174 Potential weakness 22,106 29,091 51,976 14,628 21,350 82,655 13,615 — 235,421 Definite weakness - loss unlikely 9,331 16,336 3,399 13,657 9,762 6,179 — — 58,664 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total commercial real estate $ 731,002 $ 1,064,880 $ 662,020 $ 376,159 $ 473,418 $ 883,097 $ 30,683 $ — $ 4,221,259 Commercial construction Pass $ 127,945 $ 216,573 $ 82,559 $ 22,851 $ 22,873 $ 6,505 $ 16,424 $ 2,134 $ 497,864 Potential weakness — 12,991 — — — — — — 12,991 Definite weakness - loss unlikely — 4,560 — — — — — — 4,560 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total commercial construction $ 127,945 $ 234,124 $ 82,559 $ 22,851 $ 22,873 $ 6,505 $ 16,424 $ 2,134 $ 515,415 Small business Pass $ 40,736 $ 38,804 $ 22,075 $ 14,241 $ 10,675 $ 21,809 $ 32,679 $ — $ 181,019 Potential weakness 14 — 383 200 5 174 627 — 1,403 Definite weakness - loss unlikely 138 637 41 26 10 284 580 — 1,716 Partial loss probable — — — — — — — — — Definite loss — — — — — — — — — Total small business $ 40,888 $ 39,441 $ 22,499 $ 14,467 $ 10,690 $ 22,267 $ 33,886 $ — $ 184,138 Residential real estate Pass $ 277,949 $ 184,974 $ 92,723 $ 97,915 $ 102,581 $ 463,397 $ — $ — $ 1,219,539 Default — 123 — 1,024 — 2,163 — — 3,310 Total residential real estate $ 277,949 $ 185,097 $ 92,723 $ 98,939 $ 102,581 $ 465,560 $ — $ — $ 1,222,849 Home equity Pass $ 58,897 $ 68,629 $ 42,083 $ 37,644 $ 41,792 $ 117,488 $ 628,575 $ 3,575 $ 998,683 Default — — — — — 33 1,717 35 1,785 Total home equity $ 58,897 $ 68,629 $ 42,083 $ 37,644 $ 41,792 $ 117,521 $ 630,292 $ 3,610 $ 1,000,468 Other consumer Pass $ 307 $ 347 $ 244 $ 78 $ 500 $ 5,338 $ 16,359 $ — $ 23,173 Default — — — — — — 2 — 2 Total other consumer $ 307 $ 347 $ 244 $ 78 $ 500 $ 5,338 $ 16,361 $ — $ 23,175 Total $ 1,845,455 $ 1,787,591 $ 1,003,302 $ 627,225 $ 670,687 $ 1,518,865 $ 1,349,078 $ 5,810 $ 8,808,013 (1) Loan origination dates in the tables above reflect the original origination date, or the date of a material modification of a previously originated loan.
Foreclosed Residential Real Estate Property [Table Text Block]	The following table shows information regarding foreclosed residential real estate property at the dates indicated: September 30, 2022 December 31, 2021 (Dollars in thousands) Foreclosed residential real estate property held by the creditor $ — $ — Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure $ 1,871 $ 1,426
Financing Receivable Credit Quality Indicators For Consumer And Residential Portfolio Table Text Block	The following table shows the weighted average FICO scores and the weighted average combined LTV ratios at the dates indicated below: September 30 December 31 Residential real estate portfolio FICO score (re-scored)(1) 753 749 LTV (re-valued)(2) 54.8 % 54.4 % Home equity portfolio FICO score (re-scored)(1) 771 772 LTV (re-valued)(2)(3) 40.9 % 42.4 % (1) The average FICO scores at September 30, 2022 are based upon rescores from June 2022, as available for previously originated loans, or origination score data for loans booked since June 2022. The average FICO scores at December 31, 2021 were based upon rescores available from December 2021, as available for previously originated loans, or origination score data for loans booked in December 2021. (2) The combined LTV ratios for September 30, 2022 are based upon updated automated valuations as of August 2022, when available, and/or the most current valuation data available. The combined LTV ratios for December 31, 2021 were based upon updated automated valuations as of November 2021, when available, and/or the most current valuation data available as of such date. The updated automated valuations provide new information on loans that may be available since the previous valuation was obtained. If no new information is available, the valuation will default to the previously obtained data or most recent appraisal. (3) For home equity loans and lines in a subordinate lien, the LTV data represents a combined LTV, taking into account the senior lien data for loans and lines.
Financing Receivable, Past Due [Table Text Block]	The following tables show the age analysis of past due financing receivables as of the dates indicated: September 30, 2022 30-59 days 60-89 days 90 days or more Total Past Due Total Amortized Cost Number Principal Number Principal Number Principal Number Principal Current (Dollars in thousands) Loan Portfolio Commercial and industrial 10 $ 322 1 $ 182 3 $ 558 14 $ 1,062 $ 1,547,287 $ 1,548,349 $ — Commercial real estate 9 5,419 5 4,491 2 208 16 10,118 7,667,799 7,677,917 — Commercial construction — — 1 1,661 — — 1 1,661 1,183,496 1,185,157 — Small business 7 233 3 15 6 29 16 277 209,290 209,567 — Residential real estate 15 3,146 6 1,202 19 1,804 40 6,152 1,953,102 1,959,254 — Home equity 14 534 8 775 19 1,577 41 2,886 1,084,284 1,087,170 — Other consumer (1) 504 510 36 245 8 26 548 781 32,155 32,936 — Total 559 $ 10,164 60 $ 8,571 57 $ 4,202 676 $ 22,937 $ 13,677,413 $ 13,700,350 $ — December 31, 2021 30-59 days 60-89 days 90 days or more Total Past Due Total Recorded Number Principal Number Principal Number Principal Number Principal Current (Dollars in thousands) Loan Portfolio Commercial and industrial 7 $ 143 2 $ 252 2 $ 24 11 $ 419 $ 1,562,860 $ 1,563,279 $ — Commercial real estate 15 32,845 — — 4 1,339 19 34,184 7,958,160 7,992,344 — Commercial construction — — — — — — — — 1,165,457 1,165,457 — Small business 11 136 6 53 4 24 21 213 192,976 193,189 — Residential real estate 12 2,709 5 714 76 3,922 93 7,345 1,597,341 1,604,686 — Home equity 15 1,375 6 381 21 1,671 42 3,427 1,036,184 1,039,611 — Other consumer (1) 458 719 41 277 16 112 515 1,108 27,612 28,720 — Total 518 $ 37,927 60 $ 1,677 123 $ 7,092 701 $ 46,696 $ 13,540,590 $ 13,587,286 $ —
Financing Receivable, Nonaccrual [Table Text Block]	The following table shows information regarding nonaccrual loans as of the dates indicated: Nonaccrual Balances September 30, 2022 December 31, 2021 With Allowance for Credit Losses Without Allowance for Credit Losses Total With Allowance for Credit Losses Without Allowance for Credit Losses Total (Dollars in thousands) Commercial and industrial $ 27,374 $ 19 $ 27,393 $ 3,420 $ 19 $ 3,439 Commercial real estate 15,982 — 15,982 10,870 — 10,870 Small business 50 — 50 44 — 44 Residential real estate 8,891 — 8,891 8,580 602 9,182 Home equity 3,485 — 3,485 3,781 — 3,781 Other consumer 216 — 216 504 — 504 Total nonaccrual loans (1) $ 55,998 $ 19 $ 56,017 $ 27,199 $ 621 $ 27,820 (1) Included in these amounts were $1.5 million and $2.0 million of nonaccruing TDRs at September 30, 2022 and December 31, 2021, respectively.
Financing Receivable, Troubled Debt Restructuring [Table Text Block]	The following table shows the Company’s total TDRs and other pertinent information as of the dates indicated: September 30, 2022 December 31, 2021 (Dollars in thousands) TDRs on accrual status $ 11,549 $ 14,635 TDRs on nonaccrual 1,538 1,993 Total TDRs $ 13,087 $ 16,628 Additional commitments to lend to a borrower who has been a party to a TDR $ 137 $ 190
Schedule of Debtor Troubled Debt Restructuring, Subsequent Periods [Table Text Block]	The following table shows the TDRs which occurred during the periods indicated and the change in the recorded investment subsequent to the modifications occurring: Three Months Ended Nine Months Ended September 30, 2022 September 30, 2022 Number of Pre-Modification Post-Modification Number of Pre-Modification Post-Modification (Dollars in thousands) (Dollars in thousands) Troubled debt restructurings Commercial and industrial 1 $ 68 $ 67 1 68 67 Total (1) 1 $ 68 $ 67 1 68 67 Three Months Ended Nine Months Ended September 30, 2021 September 30, 2021 Number of Pre-Modification Post-Modification Number of Pre-Modification Post-Modification (Dollars in thousands) Troubled debt restructurings Commercial and industrial — $ — $ — 1 $ 14,148 $ 14,148 Commercial real estate — — — 5 3,964 3,964 Small business — — — 2 189 189 Total (1) — $ — $ — 8 $ 18,301 $ 18,301 (1) The pre-modification and post-modification balances represent the legal principal balance of the loan. Activity presented in the table above includes $14.3 million of modifications on existing TDRs occurring during the nine months ended September 30, 2021.
Troubled Debt Restructurings On Financing Receivables Post Modifications Table Text Block	The following table shows the Company’s post-modification balance of TDRs listed by type of modification for the periods indicated: Three Months Ended Nine Months Ended September 30 September 30 2022 2021 2022 2021 (Dollars in thousands) Combination rate and maturity — — — 14,148 Extended maturity 67 — 67 4,153 Total 67 — $ 67 $ 18,301

Stock Based Compensation (Table

Stock Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]	The Company made the following awards of time vested restricted stock: Date Shares Granted Plan Grant Date Fair Value Per Share Vesting Period 2/17/2022 52,100 2005 Employee Stock Plan $ 84.70 Ratably over 5 years from grant date 5/24/2022 8,099 2018 Non-Employee Director Stock Plan $ 80.39 Shares vested immediately 9/15/2022 646 2005 Employee Stock Plan $ 77.44 Ratably over 5 years from grant date

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes	The following tables reflect the Company's derivative positions as of the dates indicated below for interest rate derivatives which qualify as cash flow hedges for accounting purposes: September 30, 2022 Weighted Average Rate Notional Amount Average Maturity Current Rate Paid Receive Fixed Fair Value (in thousands) (in years) (in thousands) Interest rate swaps on loans $ 1,050,000 3.23 2.72 % 2.66 % $ (43,365) Current Rate Paid Receive Fixed Swap Rate Interest rate collars on loans 400,000 2.52 2.69 % 3.09% - 2.19% (10,375) Total $ 1,450,000 $ (53,740) December 31, 2021 Weighted Average Rate Notional Amount Average Maturity Current Pay Fixed Fair Value (in thousands) (in years) (in thousands) Interest rate swaps on borrowings $ 25,000 0.62 0.16 % 1.88 % $ (294) Current Rate Paid Receive Fixed Interest rate swaps on loans 550,000 2.58 0.11 % 2.16 % 11,830 Current Rate Paid Receive Fixed Swap Rate Interest rate collars on loans 400,000 1.66 0.11 % 2.73% - 2.20% 9,383 Total $ 975,000 $ 20,919
Summary of customer related derivative positions, not designated as hedging	The following table reflects the Company’s customer related derivative positions as of the dates indicated below for those derivatives not designated as hedging: Notional Amount Maturing Number of Positions Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value September 30, 2022 (Dollars in thousands) Loan level swaps Receive fixed, pay variable 285 $ 82,932 $ 98,409 $ 259,419 $ 173,197 $ 953,915 $ 1,567,872 $ (127,611) Pay fixed, receive variable 285 82,932 98,409 259,419 173,197 953,915 1,567,872 127,609 Foreign exchange contracts Buys foreign currency, sells U.S. currency 62 162,094 13,013 — — — 175,107 (15,992) Buys U.S. currency, sells foreign currency 62 162,094 13,013 — — — 175,107 16,079 Risk participation agreements Participation out 11 2,605 — 24,538 — 72,045 99,188 64 Participation in 7 22,802 16,329 — — 25,944 65,075 (15) Notional Amount Maturing Number of Positions Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value December 31, 2021 (Dollars in thousands) Loan level swaps Receive fixed, pay variable 296 $ 37,589 $ 139,844 $ 123,507 $ 260,953 $ 1,060,276 $ 1,622,169 $ 55,984 Pay fixed, receive variable 296 37,589 139,844 123,507 260,953 1,060,276 1,622,169 (55,982) Foreign exchange contracts Buys foreign currency, sells U.S. currency 52 149,588 8,784 — — — 158,372 5,734 Buys U.S. currency, sells foreign currency 52 149,588 8,784 — — — 158,372 (5,734) Risk participation agreements Participation out 11 — 2,635 7,138 24,539 68,408 102,720 279 Participation in 7 29,972 28,235 — — 8,339 66,546 (55) (1) The Company may enter into one dealer swap agreement which offsets multiple commercial borrower swap agreements.
Fair value of derivative financial instruments as well as their classification on the balance sheet	The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the balance sheet and the potential effect of netting arrangements on its financial position, at the dates indicated: Asset Derivatives (1) Liability Derivatives (2) Fair Value at Fair Value at Fair Value at Fair Value at September 30 December 31 September 30 December 31 (Dollars in thousands) Derivatives designated as hedges Interest rate derivatives $ — $ 21,951 (3) $ 53,740 (4) $ 1,032 (4) Derivatives not designated as hedges Customer Related Positions Loan level derivatives 127,625 (3) 68,726 (3) 127,627 (4) 68,724 (4) Foreign exchange contracts 16,520 6,147 16,433 6,147 Risk participation agreements 64 279 15 55 Mortgage Derivatives Interest rate lock commitments 6 753 16 — Forward sale loan commitments 86 56 — — Forward sale hedge commitments 73 — — 57 Total derivatives not designated as hedges 144,374 75,961 144,091 74,983 Total 144,374 97,912 197,831 76,015 Netting Adjustments (5) (62,614) (5,727) 35,293 6,769 Net Derivatives on the Balance Sheet 81,760 92,185 162,538 69,246 Financial instruments (6) 17,744 22,378 17,744 22,378 Cash collateral pledged (received) — — — 33,838 Net Derivative Amounts $ 64,016 $ 69,807 $ 144,794 $ 13,030 (1) All asset derivatives are reflected in other assets on the balance sheet. (2) All liability derivatives are reflected in other liabilities on the balance sheet. (3) Approximately $660,000 of accrued interest receivable is included in the fair value of the loan level derivative assets at September 30, 2022, in comparison to accrued interest receivable of approximately $1.2 million and $1.5 million in included in the fair value of interest rate and loan level derivative assets, respectively, at December 31, 2021. (4) Approximately $36,000 and $660,000 of accrued interest payable is included in the fair value of interest rate and loan level derivative liabilities, respectively, at September 30, 2022. Accrued interest payable of approximately $5,000 and $1.5 million is included in the fair value of the interest rate and loan level derivative liabilities, respectively, at December 31, 2021. (5) Netting adjustments represent the amounts recorded to convert derivative assets and liabilities cleared through CME from a gross basis to a net basis, inclusive of the variation margin payments, in accordance with applicable accounting guidance. As displayed in the table above, derivatives that cleared through the CME were either in a net asset position or a net liability position at September 30, 2022. (6) Reflects offsetting derivative positions with the same counterparty that are not netted on the balance sheet.
Effect of derivative financial instruments included in OCI and current earnings	The table below presents the effect of the Company’s derivative financial instruments included in OCI and current earnings for the periods indicated: Three Months Ended Nine Months Ended September 30 September 30 2022 2021 2022 2021 (Dollars in thousands) Derivatives designated as hedges Loss in OCI on derivatives (effective portion), net of tax $ (27,144) $ (3,383) $ (52,743) $ (11,559) Gain reclassified from OCI into interest income or interest expense (effective portion) $ 407 $ 4,791 $ 8,427 $ 13,869 Derivatives not designated as hedges Changes in fair value of customer related positions Other income $ 26 $ 54 $ 147 $ 137 Other expense (67) (80) (239) (374) Changes in fair value of mortgage derivatives Mortgage banking income 41 (213) (603) (3,840) Total $ — $ (239) $ (695) $ (4,077)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]	Assets and liabilities measured at fair value on a recurring and nonrecurring basis were as follows at the dates indicated: Fair Value Measurements at Reporting Date Using Balance Quoted Prices Significant Significant September 30, 2022 (Dollars in thousands) Recurring fair value measurements Assets Trading securities $ 3,538 $ 3,538 $ — $ — Equity securities 20,439 20,439 — — Securities available for sale U.S. government agency securities 199,942 — 199,942 — U.S. treasury securities 784,458 — 784,458 — Agency mortgage-backed securities 344,153 — 344,153 — Agency collateralized mortgage obligations 40,787 — 40,787 — State, county, and municipal securities 187 — 187 — Single issuer trust preferred securities issued by banks and insurers 489 — 489 — Pooled trust preferred securities issued by banks and insurers 999 — 999 — Small business administration pooled securities 54,496 — 54,496 — Loans held for sale 5,100 — 5,100 — Derivative instruments 144,374 — 144,374 — Liabilities Derivative instruments 197,831 — 197,831 — Total recurring fair value measurements $ 1,401,131 $ 23,977 $ 1,377,154 $ — Nonrecurring fair value measurements Assets Individually assessed collateral dependent loans (1) $ 13,020 $ — $ — $ 13,020 Total nonrecurring fair value measurements $ 13,020 $ — $ — $ 13,020 Fair Value Measurements at Reporting Date Using Balance Quoted Prices Significant Significant December 31, 2021 (Dollars in thousands) Recurring fair value measurements Assets Trading securities $ 3,720 $ 3,720 $ — $ — Equity securities 23,173 23,173 — — Securities available for sale U.S. government agency securities 215,482 — 215,482 — U.S. treasury securities 861,448 — 861,448 — Agency mortgage-backed securities 363,933 — 363,933 — Agency collateralized mortgage obligations 79,677 — 79,677 — State, county, and municipal securities 203 — 203 — Single issuer trust preferred securities issued by banks and insurers 491 — 491 — Pooled trust preferred securities issued by banks and insurers 1,000 — 1,000 — Small business administration pooled securities 48,914 — 48,914 — Loans held for sale 24,679 — 24,679 — Derivative instruments 97,912 — 97,912 — Liabilities Derivative instruments 76,015 — 76,015 — Total recurring fair value measurements $ 1,644,617 $ 26,893 $ 1,617,724 $ — Nonrecurring fair value measurements Assets Individually assessed collateral dependent loans (1) $ 1,174 $ — $ — $ 1,174 Total nonrecurring fair value measurements $ 1,174 $ — $ — $ 1,174 (1) The carrying value of individually assessed collateral dependent loans is based on the lower of amortized cost or fair value of the underlying collateral less costs to sell. The fair value of the underlying collateral is generally determined through independent appraisals, which generally include various Level 3 inputs which are not identifiable. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of these possible adjustments may vary.
The estimated fair values and related carrying amounts for assets and liabilities	The estimated fair values and related carrying amounts for assets and liabilities for which fair value is only disclosed are shown below at the dates indicated: Fair Value Measurements at Reporting Date Using Carrying Fair Quoted Prices Significant Significant September 30, 2022 (Dollars in thousands) Financial assets Securities held to maturity (a) U.S. government agency securities $ 31,696 $ 29,303 $ — $ 29,303 $ — U.S. treasury securities 100,615 87,992 — 87,992 — Agency mortgage-backed securities 892,102 802,093 — 802,093 — Agency collateralized mortgage obligations 553,995 476,970 — 476,970 — Single issuer trust preferred securities issued by banks 1,500 1,508 — 1,508 — Small business administration pooled securities 117,727 112,119 — 112,119 — Loans, net of allowance for credit losses (b) 13,540,017 13,208,966 — — 13,208,966 Federal Home Loan Bank stock (c) 5,218 5,218 — 5,218 — Cash surrender value of life insurance policies (d) 293,126 293,126 — 293,126 — Financial liabilities Deposit liabilities, other than time deposits (e) $ 15,160,375 $ 15,160,375 $ — $ 15,160,375 $ — Time certificates of deposits (f) 1,178,619 1,147,506 — 1,147,506 — Federal Home Loan Bank borrowings (f) 643 571 — 571 — Junior subordinated debentures (g) 62,855 59,770 — 59,770 — Subordinated debentures (f) 49,862 44,066 — — 44,066 Fair Value Measurements at Reporting Date Using Carrying Fair Quoted Prices Significant Significant December 31, 2021 (Dollars in thousands) Financial assets Securities held to maturity (a) U.S. government agency securities $ 32,987 $ 32,546 $ — $ 32,546 $ — U.S. treasury securities 102,560 102,242 — 102,242 — Agency mortgage-backed securities 493,012 497,236 — 497,236 — Agency collateralized mortgage obligations 415,736 408,845 — 408,845 — Single issuer trust preferred securities issued by banks 1,500 1,508 — 1,508 — Small business administration pooled securities 21,023 21,756 — 21,756 — Loans, net of allowance for credit losses (b) 13,439,190 13,389,515 — — 13,389,515 Federal Home Loan Bank stock (c) 11,407 11,407 — 11,407 — Cash surrender value of life insurance policies (d) 289,304 289,304 — 289,304 — Financial liabilities Deposit liabilities, other than time deposits (e) $ 15,385,894 $ 15,385,894 $ — $ 15,385,894 $ — Time certificates of deposits (f) 1,531,150 1,529,857 — 1,529,857 — Federal Home Loan Bank borrowings (f) 25,667 25,663 — 25,663 — Long-term borrowings (f) 14,063 13,989 — 13,989 — Junior subordinated debentures (g) 62,853 67,019 — 67,019 — Subordinated debentures (f) 49,791 45,532 — — 45,532 (a) The fair values presented are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments and/or discounted cash flow analysis. (b) Fair value of loans is measured using the exit price valuation method, determined primarily by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities or cash flows, while incorporating liquidity and credit assumptions. Additionally, this amount excludes individually assessed collateral dependent loans, which are deemed to be marked to fair value on a nonrecurring basis. (c) Federal Home Loan Bank stock has no quoted market value and is carried at cost; therefore, the carrying amount approximates fair value. (d) Cash surrender value of life insurance policies is recorded at its cash surrender value (or the amount that can be realized upon surrender of the policy), therefore, carrying amount approximates fair value. (e) Fair value of demand deposits, savings and interest checking accounts and money market deposits is the amount payable on demand at the reporting date. (f) Fair value was determined by discounting anticipated future cash payments using rates currently available for instruments with similar remaining maturities. (g) Fair value was determined based upon market prices of securities with similar terms and maturities.

Revenue Recognition Revenue (Ta

Revenue Recognition Revenue (Tables)	9 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue [Table Text Block]	The following table presents the revenue streams that the Company has disaggregated as of the periods indicated: Three Months Ended Nine Months Ended September 30 September 30 September 30 September 30 (Dollars in thousands) Deposit account fees (inclusive of cash management fees) $ 6,261 $ 4,298 $ 17,582 $ 11,704 Interchange fees 2,833 2,223 8,043 6,267 ATM fees 1,066 817 2,900 2,177 Investment management - wealth management and advisory services 7,834 8,147 23,563 23,576 Investment management - retail investments and insurance revenue 602 1,027 2,875 2,774 Merchant processing income 412 365 1,140 1,024 Credit card income 495 334 1,341 883 Other noninterest income 1,782 1,362 4,650 3,732 Total noninterest income in-scope of ASC 606 21,285 18,573 62,094 52,137 Total noninterest income out-of-scope of ASC 606 6,910 7,884 20,271 24,533 Total noninterest income $ 28,195 $ 26,457 $ 82,365 $ 76,670
Contract with Customer, Asset and Liability [Table Text Block]	The following table provides the amount of investment management revenue earned but not received as of the dates indicated: September 30, 2022 December 31, 2021 (Dollars in thousands) Receivables, included in other assets $ 4,401 $ 5,385

Comprehensive Income_Loss (Tabl

Comprehensive Income/Loss (Tables)	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Comprehensive income	The following tables present a reconciliation of the changes in the components of other comprehensive income (loss) for the periods indicated, including the amount of income tax (expense) benefit allocated to each component of other comprehensive income (loss): Three Months Ended Nine Months Ended Pre-Tax Tax (Expense) After Tax Pre-Tax Tax (Expense) After Tax (Dollars in thousands) Change in fair value of securities available for sale $ (55,461) $ 12,879 $ (42,582) $ (167,814) $ 38,942 $ (128,872) Less: net security losses reclassified into other noninterest expense — — — — — — Net change in fair value of securities available for sale (55,461) 12,879 (42,582) (167,814) 38,942 (128,872) Change in fair value of cash flow hedges (37,357) 10,505 (26,852) (64,963) 18,277 (46,686) Less: net cash flow hedge gains reclassified into interest income or interest expense 407 (115) 292 8,427 (2,370) 6,057 Net change in fair value of cash flow hedges (37,764) 10,620 (27,144) (73,390) 20,647 (52,743) Amortization of net actuarial losses 159 (45) 114 476 (134) 342 Amortization of net prior service costs 10 (3) 7 29 (8) 21 Net change in other comprehensive income for defined benefit postretirement plans (1) 169 (48) 121 505 (142) 363 Total other comprehensive loss $ (93,056) $ 23,451 $ (69,605) $ (240,699) $ 59,447 $ (181,252) Three Months Ended Nine Months Ended Pre-Tax Tax (Expense) After Tax Pre-Tax Tax (Expense) After Tax (Dollars in thousands) Change in fair value of securities available for sale $ (10,337) $ 2,440 $ (7,897) $ (15,589) $ 3,711 $ (11,878) Less: net security losses reclassified into other noninterest expense — — — — — — Net change in fair value of securities available for sale (10,337) 2,440 (7,897) (15,589) 3,711 (11,878) Change in fair value of cash flow hedges 84 (23) 61 (2,214) 624 (1,590) Less: net cash flow hedge gains reclassified into interest income or interest expense 4,791 (1,347) 3,444 13,869 (3,900) 9,969 Net change in fair value of cash flow hedges (4,707) 1,324 (3,383) (16,083) 4,524 (11,559) Net unamortized gain related to defined benefit pension and other postretirement adjustments arising during the period — — — 653 (184) 469 Amortization of net actuarial losses 346 (97) 249 1,037 (291) 746 Amortization of net prior service costs 44 (13) 31 131 (37) 94 Net change in other comprehensive income for defined benefit postretirement plans (1) 390 (110) 280 1,821 (512) 1,309 Total other comprehensive loss $ (14,654) $ 3,654 $ (11,000) $ (29,851) $ 7,723 $ (22,128) (1) The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 14 "Employee Benefit Plans" within the Notes to the Consolidated Financial Statements included in Item 8 of the Company's 2021 Form 10-K.
Company's accumulated other comprehensive loss, net of tax	Information on the Company’s accumulated other comprehensive income (loss), net of tax, is comprised of the following components as of the dates indicated: Unrealized Gain (Loss) Unrealized Gain (Loss) on Cash Flow Hedge Defined Benefit Postretirement Plans Accumulated Other Comprehensive Income (Loss) (Dollars in thousands) 2022 Beginning balance: January 1, 2022 $ (9,667) $ 14,137 $ (2,287) $ 2,183 Net change in other comprehensive income (loss) (128,872) (52,743) 363 (181,252) Ending balance: September 30, 2022 $ (138,539) $ (38,606) $ (1,924) $ (179,069) 2021 Beginning balance: January 1, 2021 $ 13,255 $ 33,276 $ (5,836) $ 40,695 Net change in other comprehensive income (loss) (11,878) (11,559) 1,309 (22,128) Ending balance: September 30, 2021 $ 1,377 $ 21,717 $ (4,527) $ 18,567

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block]	The following table summarizes the above financial instruments at the dates indicated: September 30, 2022 December 31, 2021 (Dollars in thousands) Commitments to extend credit $ 4,552,576 $ 4,535,895 Standby letters of credit 25,565 24,412 Deferred standby letter of credit fees 187 124 Loan exposures sold with recourse 171,437 202,717

Securities Securities (Equity g

Securities Securities (Equity gains and losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Equity securities gains and losses [Abstract]
Equity Securities, FV-NI, Gain (Loss)	$ (742)	$ (169)	$ (2,819)	$ 695
Equity Securities, FV-NI, Realized Gain (Loss)	0	50	8	191
Equity Securities, FV-NI, Unrealized Gain (Loss)	$ (742)	$ (219)	$ (2,827)	$ 504

Securities (Reconciliation of f

Securities (Reconciliation of fair value of available for sale securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	$ 1,605,913	$ 1,583,736
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	55	8,808
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(180,457)	(21,396)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,425,511	1,571,148
U.S. government agency securities
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	231,122	217,393
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	990
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(31,180)	(2,901)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	199,942	215,482
U.S. treasury securities
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	873,891	873,467
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	172
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(89,433)	(12,191)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	784,458	861,448
Agency mortgage-backed securities
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	393,296	364,955
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	50	4,512
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(49,193)	(5,534)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	344,153	363,933
Agency Collateralized Mortgage Obligations [Member]
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	43,672	78,966
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	5	1,282
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(2,890)	(571)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	40,787	79,677
US States and Political Subdivisions Debt Securities [Member]
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	193	192
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	11
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(6)	0
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	187	203
Single Issuer Trust Preferred Securities Issued by Banks and Insurers [Member]
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	489	489
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	2
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0	0
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	489	491
Pooled trust preferred securities issued by banks and insurers
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	1,202	1,199
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(203)	(199)
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	999	1,000
Small Business Administration Pooled Securities [Member]
Reconciliation of fair value of securities
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	62,048	47,075
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	1,839
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(7,552)	0
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	$ 54,496	$ 48,914

Securities Securities (Availabl

Securities Securities (Available for sale securities in continuous unrealized loss position) (Details) $ in Thousands	Sep. 30, 2022 USD ($) holding	Dec. 31, 2021 USD ($) holding
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	190	37
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 506,666	$ 1,210,544
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(60,085)	(21,197)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	915,232	1,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(120,372)	(199)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,421,898	1,211,544
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 180,457	$ 21,396
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	142	12
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 263,358	$ 214,678
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(29,512)	(5,534)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	79,167	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(19,681)	0
Debt Securities, Available-for-sale, Unrealized Loss Position	342,525	214,678
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 49,193	$ 5,534
Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	11	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 39,291	$ 22,960
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(2,890)	(571)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	39,291	22,960
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 2,890	$ 571
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 187
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(6)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Debt Securities, Available-for-sale, Unrealized Loss Position	187
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 6
Pooled trust preferred securities issued by banks and insurers
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	1	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	999	1,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(203)	(199)
Debt Securities, Available-for-sale, Unrealized Loss Position	999	1,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 203	$ 199
Small Business Administration Pooled Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	8
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 36,885
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(3,768)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	17,611
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(3,784)
Debt Securities, Available-for-sale, Unrealized Loss Position	54,496
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 7,552
U.S. government agency securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	9	6
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 80,353	$ 160,913
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(11,483)	(2,901)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	119,589	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(19,697)	0
Debt Securities, Available-for-sale, Unrealized Loss Position	199,942	160,913
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 31,180	$ 2,901
US Treasury Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding	18	17
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 86,592	$ 811,993
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(12,426)	(12,191)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	697,866	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(77,007)	0
Debt Securities, Available-for-sale, Unrealized Loss Position	784,458	811,993
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 89,433	$ 12,191

Securities Securities (Reconcil

Securities Securities (Reconciliation of amortized cost of held to maturity securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	$ 169	$ 12,474
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(187,819)	(15,159)
Debt Securities, Held-to-maturity, Fair Value	1,509,985	1,064,133
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	1,697,635	1,066,818
Small Business Administration Pooled Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	12	733
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(5,620)	0
Debt Securities, Held-to-maturity, Fair Value	112,119	21,756
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	117,727	21,023
Collateralized Debt Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0	3,232
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(77,025)	(10,123)
Debt Securities, Held-to-maturity, Fair Value	476,970	408,845
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	553,995	415,736
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	149	8,495
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(90,158)	(4,271)
Debt Securities, Held-to-maturity, Fair Value	802,093	497,236
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	892,102	493,012
US Treasury Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0	6
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(12,623)	(324)
Debt Securities, Held-to-maturity, Fair Value	87,992	102,242
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	100,615	102,560
U.S. government agency securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(2,393)	(441)
Debt Securities, Held-to-maturity, Fair Value	29,303	32,546
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	31,696	32,987
Trust Preferred Securities Subject to Mandatory Redemption [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	8	8
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	0	0
Debt Securities, Held-to-maturity, Fair Value	1,508	1,508
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	$ 1,500	$ 1,500

Securities (Schedule of Contrac

Securities (Schedule of Contractual Maturities of Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	$ 1,605,913	$ 1,583,736
Available for Sale, Fair Value
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,425,511	1,571,148
Held to Maturity, Fair Value
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	1,697,635	1,066,818
Held to Maturity, Fair Value, Total	1,509,985	1,064,133
Available for Sale Securities and Held to Maturity Securities Amortized Cost	3,303,548
Debt Securities, Available-for-sale and Held-to-maturity	2,935,496
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	19,886
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	19,843
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	1,132,668
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value	1,039,617
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	1,061,045
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	915,523
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Ten Years, Amortized Cost	1,089,949
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Ten Years, Fair Value	960,513
U.S. government agency securities
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	68,007
Available for Sale, Amortized Cost, Due after five to ten years	163,115
Available for Sale, Amortized Cost, Due after ten years	0
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	231,122	217,393
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	60,786
Available for Sale, Fair Value, Due after five to ten years	139,156
Available for Sale, Fair Value, Due after ten years	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	199,942	215,482
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	31,696
Held to Maturity, Amortized Cost, Due after five to ten years	0
Held to Maturity, Amortized Cost, Due after ten years	0
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	29,303
Held to Maturity, Fair Value, Due after five to ten years	0
Held to Maturity, Fair Value, Due after ten years	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	31,696	32,987
Held to Maturity, Fair Value, Total	29,303	32,546
Small Business Administration Pooled Securities [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	0
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	62,048
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	62,048	47,075
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	0
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	54,496
Debt Securities, Available-for-Sale, Excluding Accrued Interest	54,496	48,914
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	0
Held to Maturity, Amortized Cost, Due after five to ten years	0
Held to Maturity, Amortized Cost, Due after ten years	117,727
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	0
Held to Maturity, Fair Value, Due after five to ten years	0
Held to Maturity, Fair Value, Due after ten years	112,119
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	117,727	21,023
Held to Maturity, Fair Value, Total	112,119	21,756
Debt Securities [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	19,658
Available for Sale, Amortized Cost, Due after one year to five years	830,875
Available for Sale, Amortized Cost, Due after five to ten years	493,790
Available for Sale, Amortized Cost, Due after ten years	261,590
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	19,617
Available for Sale, Fair Value, Due after one year to five years	755,576
Available for Sale, Fair Value, Due after five to ten years	422,453
Available for Sale, Fair Value, Due after ten years	227,865
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	228
Held to Maturity, Amortized Cost, Due after one year to five years	301,793
Held to Maturity, Amortized Cost, Due after five to ten years	567,255
Held to Maturity, Amortized Cost, Due after ten years	828,359
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	226
Held to Maturity, Fair Value, Due after one year to five years	284,041
Held to Maturity, Fair Value, Due after five to ten years	493,070
Held to Maturity, Fair Value, Due after ten years	732,648
Held to Maturity, Fair Value, Total	1,509,985
Pooled trust preferred securities issued by banks and insurers
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	0
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	1,202
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	1,202	1,199
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	0
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	999
Debt Securities, Available-for-Sale, Excluding Accrued Interest	999	1,000
Single Issuer Trust Preferred Securities Issued by Banks and Insurers [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	0
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	489
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	489	489
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	0
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	489
Debt Securities, Available-for-Sale, Excluding Accrued Interest	489	491
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	0
Held to Maturity, Amortized Cost, Due after five to ten years	1,500
Held to Maturity, Amortized Cost, Due after ten years	0
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	0
Held to Maturity, Fair Value, Due after five to ten years	1,508
Held to Maturity, Fair Value, Due after ten years	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	1,500	1,500
Held to Maturity, Fair Value, Total	1,508	1,508
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	193
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	0
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	193	192
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	187
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	187	203
Agency Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	0
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	43,672
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	43,672	78,966
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	0
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	40,787
Debt Securities, Available-for-Sale, Excluding Accrued Interest	40,787	79,677
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	29,998
Held to Maturity, Amortized Cost, Due after five to ten years	36,791
Held to Maturity, Amortized Cost, Due after ten years	487,206
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	28,550
Held to Maturity, Fair Value, Due after five to ten years	31,784
Held to Maturity, Fair Value, Due after ten years	416,636
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	553,995	415,736
Held to Maturity, Fair Value, Total	476,970	408,845
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	19,658
Available for Sale, Amortized Cost, Due after one year to five years	70,984
Available for Sale, Amortized Cost, Due after five to ten years	148,475
Available for Sale, Amortized Cost, Due after ten years	154,179
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	393,296	364,955
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	19,617
Available for Sale, Fair Value, Due after one year to five years	66,817
Available for Sale, Fair Value, Due after five to ten years	126,625
Available for Sale, Fair Value, Due after ten years	131,094
Debt Securities, Available-for-Sale, Excluding Accrued Interest	344,153	363,933
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	228
Held to Maturity, Amortized Cost, Due after one year to five years	190,333
Held to Maturity, Amortized Cost, Due after five to ten years	478,115
Held to Maturity, Amortized Cost, Due after ten years	223,426
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	226
Held to Maturity, Fair Value, Due after one year to five years	182,141
Held to Maturity, Fair Value, Due after five to ten years	415,833
Held to Maturity, Fair Value, Due after ten years	203,893
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	892,102	493,012
Held to Maturity, Fair Value, Total	802,093	497,236
US Treasury Securities [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	691,691
Available for Sale, Amortized Cost, Due after five to ten years	182,200
Available for Sale, Amortized Cost, Due after ten years	0
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	873,891	873,467
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	627,786
Available for Sale, Fair Value, Due after five to ten years	156,672
Available for Sale, Fair Value, Due after ten years	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	784,458	861,448
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	49,766
Held to Maturity, Amortized Cost, Due after five to ten years	50,849
Held to Maturity, Amortized Cost, Due after ten years	0
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	44,047
Held to Maturity, Fair Value, Due after five to ten years	43,945
Held to Maturity, Fair Value, Due after ten years	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	100,615	102,560
Held to Maturity, Fair Value, Total	$ 87,992	$ 102,242

Securities (Details Textual) (D

Securities (Details Textual) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Trading	$ 3,538		$ 3,538		$ 3,720
Debt Securities, Available-for-sale, Past due	0		0		0
Investments in obligations of individual states, counties or municipalities which exceed 10% of equity	0		0		0
Debt Securities, Available-for-sale, Past due	0		0		0
Debt Securities, Available-for-sale, Nonaccrual	0		0		0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Nonaccrual	0		0		0
Securities (Textual) [Abstract]
Callable Securities in Investment Portfolio	24,800		24,800
Investments in obligations of individual states, counties or municipalities which exceed 10% of equity	0		0		0
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss	3,300		3,300		3,000
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss	4,300		4,300		2,000
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing	0		0		0
Debt Securities, Available-for-Sale, Accrued Interest Writeoff	0	$ 0	0	$ 0
Debt Securities, Held-to-Maturity, Accrued Interest, Writeoff	0	0	0	0
Debt Securities, Available-for-sale, Realized Gain (Loss)	0	0	0	0
Debt Securities, Held-to-maturity, Sold, Realized Gain (Loss)	0	$ 0	0	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Allowance for Credit Loss, Period Increase (Decrease)			0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Period Increase (Decrease)			0	$ 0
Equity	20,439		20,439		23,173
Asset Pledged as Collateral
Securities (Textual) [Abstract]
Debt Securities	963,900		963,900		740,600
Debt Securities	$ 963,900		$ 963,900		$ 740,600

Loans, Allowance for Credit L_3

Loans, Allowance for Credit Losses and Credit Quality Financing Receivable, Allowance for Credit Loss (Details) - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2022		Sep. 30, 2021		Sep. 30, 2022		Sep. 30, 2021		Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	$ 147,313,000	[1]	$ 92,246,000	[1]	$ 147,313,000	[1]	$ 92,246,000	[1]	$ 144,319,000	$ 146,922,000	$ 102,357,000	$ 113,392,000
Allowance for Loan and Lease Losses, Write-offs	(741,000)
Allowance for Loan and Lease Loss, Recovery of Bad Debts	735,000
Provision for Loan and Lease Losses	3,000,000
Provision for (release of) credit losses	3,000,000		(10,000,000)		1,000,000		(17,500,000)
Allowance for Loan and Lease Loss, Recovery of Bad Debts			221,000		1,383,000		853,000
Allowance for Loan and Lease Losses, Write-offs			(332,000)		(1,992,000)		(4,499,000)
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	20,169,000	[1]	16,014,000	[1]	20,169,000	[1]	16,014,000	[1]	14,107,000	14,402,000	17,032,000	21,086,000
Allowance for Loan and Lease Losses, Write-offs	0
Allowance for Loan and Lease Loss, Recovery of Bad Debts	2,000
Provision for Loan and Lease Losses	6,060,000
Provision for (release of) credit losses			(1,018,000)		5,723,000		(1,698,000)
Allowance for Loan and Lease Loss, Recovery of Bad Debts			1,000		44,000		100,000
Allowance for Loan and Lease Losses, Write-offs			(1,000)		0		(3,474,000)
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	80,036,000	[1]	37,798,000	[1]	80,036,000	[1]	37,798,000	[1]	83,456,000	83,486,000	44,325,000	45,009,000
Allowance for Loan and Lease Losses, Write-offs	(62,000)
Allowance for Loan and Lease Loss, Recovery of Bad Debts	330,000
Provision for Loan and Lease Losses	(3,688,000)
Provision for (release of) credit losses			(6,527,000)		(3,721,000)		(7,268,000)
Allowance for Loan and Lease Loss, Recovery of Bad Debts			0		333,000		57,000
Allowance for Loan and Lease Losses, Write-offs			0		(62,000)		0
Construction Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	11,419,000	[1]	4,468,000	[1]	11,419,000	[1]	4,468,000	[1]	11,710,000	12,316,000	4,865,000	5,397,000
Allowance for Loan and Lease Losses, Write-offs	0
Allowance for Loan and Lease Loss, Recovery of Bad Debts	0
Provision for Loan and Lease Losses	(291,000)
Provision for (release of) credit losses			(397,000)		(897,000)		(929,000)
Allowance for Loan and Lease Loss, Recovery of Bad Debts			0		0		0
Allowance for Loan and Lease Losses, Write-offs			0		0		0
Small Business [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	2,624,000	[1]	3,667,000	[1]	2,624,000	[1]	3,667,000	[1]	2,784,000	3,508,000	3,612,000	5,095,000
Allowance for Loan and Lease Losses, Write-offs	0
Allowance for Loan and Lease Loss, Recovery of Bad Debts	88,000
Provision for Loan and Lease Losses	(248,000)
Provision for (release of) credit losses			88,000		(972,000)		(1,309,000)
Allowance for Loan and Lease Loss, Recovery of Bad Debts			50,000		147,000		65,000
Allowance for Loan and Lease Losses, Write-offs			(83,000)		(59,000)		(184,000)
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	20,602,000	[1]	11,047,000	[1]	20,602,000	[1]	11,047,000	[1]	19,750,000	14,484,000	12,014,000	14,275,000
Allowance for Loan and Lease Losses, Write-offs	0
Allowance for Loan and Lease Loss, Recovery of Bad Debts	0
Provision for Loan and Lease Losses	852,000
Provision for (release of) credit losses			(967,000)		6,118,000		(3,229,000)
Allowance for Loan and Lease Loss, Recovery of Bad Debts			0		0		1,000
Allowance for Loan and Lease Losses, Write-offs			0		0		0
Home Equity Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	11,651,000	[1]	18,868,000	[1]	11,651,000	[1]	18,868,000	[1]	11,740,000	17,986,000	20,087,000	22,060,000
Allowance for Loan and Lease Losses, Write-offs	0
Allowance for Loan and Lease Loss, Recovery of Bad Debts	65,000
Provision for Loan and Lease Losses	(154,000)
Provision for (release of) credit losses			(1,268,000)		(6,318,000)		(3,230,000)
Allowance for Loan and Lease Loss, Recovery of Bad Debts			49,000		105,000		107,000
Allowance for Loan and Lease Losses, Write-offs			0		(122,000)		(69,000)
Consumer - Other [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	812,000	[1]	384,000	[1]	812,000	[1]	384,000	[1]	$ 772,000	$ 740,000	$ 422,000	$ 470,000
Allowance for Loan and Lease Losses, Write-offs	(679,000)
Allowance for Loan and Lease Loss, Recovery of Bad Debts	251,000
Provision for Loan and Lease Losses	$ 469,000
Provision for (release of) credit losses			89,000		1,067,000		163,000
Allowance for Loan and Lease Loss, Recovery of Bad Debts			121,000		754,000		523,000
Allowance for Loan and Lease Losses, Write-offs			$ (248,000)		$ (1,749,000)		$ (772,000)
[1]Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $42.7 million and $36.7 million as of September 30, 2022 and September 30, 2021, respectively.

Loans, Allowance for Credit L_4

Loans, Allowance for Credit Losses and Credit Quality Finance Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands		Sep. 30, 2022		Dec. 31, 2021	Sep. 30, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		$ 2,347,498			$ 1,845,455
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		2,617,135			1,787,591
Financing Receivable, Originated Two Years before Latest Fiscal Year		1,958,359			1,003,302
Financing Receivable, Originated Three Years before Latest Fiscal Year		1,065,396			627,225
Financing Receivable, Originated Four Years before Latest Fiscal Year		1,069,133			670,687
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		2,968,288			1,518,865
Financing Receivable, Revolving		1,666,287			1,349,078
Loans and Leases Receivable, Gross		13,700,350	[1]	$ 13,587,286	8,808,013
Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		982,035			731,002
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,522,690			1,064,880
Financing Receivable, Originated Two Years before Latest Fiscal Year		1,311,597			662,020
Financing Receivable, Originated Three Years before Latest Fiscal Year		789,834			376,159
Financing Receivable, Originated Four Years before Latest Fiscal Year		819,847			473,418
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		2,203,527			883,097
Financing Receivable, Revolving		47,317			30,683
Loans and Leases Receivable, Gross		7,677,917	[1]	7,992,344	4,221,259	[1]
Commercial Real Estate [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		32,579			22,106
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		53,096			29,091
Financing Receivable, Originated Two Years before Latest Fiscal Year		41,164			51,976
Financing Receivable, Originated Three Years before Latest Fiscal Year		14,147			14,628
Financing Receivable, Originated Four Years before Latest Fiscal Year		68,298			21,350
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		205,234			82,655
Financing Receivable, Revolving		0			13,615
Loans and Leases Receivable, Gross	[1]	414,518			235,421
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		922,772			699,565
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		1,467,370			1,019,453
Financing Receivable, Originated Two Years before Latest Fiscal Year		1,265,711			606,645
Financing Receivable, Originated Three Years before Latest Fiscal Year		773,102			347,874
Financing Receivable, Originated Four Years before Latest Fiscal Year		733,621			442,306
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		1,976,282			794,263
Financing Receivable, Revolving		47,317			17,068
Loans and Leases Receivable, Gross	[1]	7,187,245			3,927,174
Commercial Real Estate [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		26,684			9,331
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		2,224			16,336
Financing Receivable, Originated Two Years before Latest Fiscal Year		4,722			3,399
Financing Receivable, Originated Three Years before Latest Fiscal Year		2,585			13,657
Financing Receivable, Originated Four Years before Latest Fiscal Year		17,928			9,762
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		21,836			6,179
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	75,979			58,664
Commercial Real Estate [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		0			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0			0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		175			0
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	175			0
Commercial Real Estate [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		0			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0			0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0			0
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	0			0
Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		296,626			608,467
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		151,496			195,073
Financing Receivable, Originated Two Years before Latest Fiscal Year		123,790			101,174
Financing Receivable, Originated Three Years before Latest Fiscal Year		69,474			77,087
Financing Receivable, Originated Four Years before Latest Fiscal Year		86,866			18,833
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		23,769			18,577
Financing Receivable, Revolving		792,966			621,432
Loans and Leases Receivable, Gross		1,548,349	[1]	1,563,279	1,640,709	[1]
Commercial And Industrial [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		1,540			1,338
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		973			9,035
Financing Receivable, Originated Two Years before Latest Fiscal Year		1,038			3,286
Financing Receivable, Originated Three Years before Latest Fiscal Year		1,844			1,672
Financing Receivable, Originated Four Years before Latest Fiscal Year		3,955			980
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		715			1,632
Financing Receivable, Revolving		6,557			10,262
Loans and Leases Receivable, Gross	[1]	16,622			28,205
Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	[2]	292,601			590,532
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	[2]	149,588			185,706
Financing Receivable, Originated Two Years before Latest Fiscal Year	[2]	122,752			97,095
Financing Receivable, Originated Three Years before Latest Fiscal Year	[2]	67,591			74,381
Financing Receivable, Originated Four Years before Latest Fiscal Year	[2]	82,911			15,175
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	[2]	22,943			16,731
Financing Receivable, Revolving	[2]	759,390			605,718
Loans and Leases Receivable, Gross	[1],[2]	1,501,138			1,585,404
Commercial And Industrial [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		2,485			16,597
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		935			332
Financing Receivable, Originated Two Years before Latest Fiscal Year		0			793
Financing Receivable, Originated Three Years before Latest Fiscal Year		39			1,034
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			2,678
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		111			214
Financing Receivable, Revolving		27,019			5,452
Loans and Leases Receivable, Gross	[1]	30,589			27,100
Commercial And Industrial [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		0			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0			0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0			0
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	0			0
Commercial And Industrial [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		0			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0			0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0			0
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	0			0
Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		431,396			127,945
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		405,074			234,124
Financing Receivable, Originated Two Years before Latest Fiscal Year		234,723			82,559
Financing Receivable, Originated Three Years before Latest Fiscal Year		57,768			22,851
Financing Receivable, Originated Four Years before Latest Fiscal Year		26,263			22,873
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		7,844			6,505
Financing Receivable, Revolving		21,457			16,424
Loans and Leases Receivable, Gross		1,185,157	[1]	1,165,457	515,415	[1]
Construction Loans [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		40,631			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0			12,991
Financing Receivable, Originated Two Years before Latest Fiscal Year		3,387			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0			0
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	44,018			12,991
Construction Loans [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		388,627			127,945
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		392,229			216,573
Financing Receivable, Originated Two Years before Latest Fiscal Year		231,336			82,559
Financing Receivable, Originated Three Years before Latest Fiscal Year		57,768			22,851
Financing Receivable, Originated Four Years before Latest Fiscal Year		26,263			22,873
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		7,844			6,505
Financing Receivable, Revolving		21,457			16,424
Loans and Leases Receivable, Gross	[1]	1,126,156			497,864
Construction Loans [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		2,138			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		12,845			4,560
Financing Receivable, Originated Two Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0			0
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	14,983			4,560
Construction Loans [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		0			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0			0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0			0
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	0			0
Construction Loans [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		0			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0			0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0			0
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	0			0
Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		42,117			40,888
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		46,744			39,441
Financing Receivable, Originated Two Years before Latest Fiscal Year		32,804			22,499
Financing Receivable, Originated Three Years before Latest Fiscal Year		17,912			14,467
Financing Receivable, Originated Four Years before Latest Fiscal Year		10,667			10,690
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		20,580			22,267
Financing Receivable, Revolving		38,743			33,886
Loans and Leases Receivable, Gross		209,567	[1]	193,189	184,138	[1]
Small Business [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		0			14
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		163			0
Financing Receivable, Originated Two Years before Latest Fiscal Year		394			383
Financing Receivable, Originated Three Years before Latest Fiscal Year		369			200
Financing Receivable, Originated Four Years before Latest Fiscal Year		193			5
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		129			174
Financing Receivable, Revolving		697			627
Loans and Leases Receivable, Gross	[1]	1,945			1,403
Small Business [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		41,923			40,736
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		46,581			38,804
Financing Receivable, Originated Two Years before Latest Fiscal Year		31,968			22,075
Financing Receivable, Originated Three Years before Latest Fiscal Year		17,536			14,241
Financing Receivable, Originated Four Years before Latest Fiscal Year		10,454			10,675
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		20,227			21,809
Financing Receivable, Revolving		37,455			32,679
Loans and Leases Receivable, Gross	[1]	206,144			181,019
Small Business [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		194			138
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0			637
Financing Receivable, Originated Two Years before Latest Fiscal Year		442			41
Financing Receivable, Originated Three Years before Latest Fiscal Year		7			26
Financing Receivable, Originated Four Years before Latest Fiscal Year		20			10
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		224			284
Financing Receivable, Revolving		591			580
Loans and Leases Receivable, Gross	[1]	1,478			1,716
Small Business [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		0			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0			0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0			0
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	0			0
Small Business [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		0			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0			0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0			0
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	0			0
Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		557,643			277,949
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		426,721			185,097
Financing Receivable, Originated Two Years before Latest Fiscal Year		197,214			92,723
Financing Receivable, Originated Three Years before Latest Fiscal Year		96,155			98,939
Financing Receivable, Originated Four Years before Latest Fiscal Year		97,204			102,581
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		584,317			465,560
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross		1,959,254	[1]	1,604,686	1,222,849	[1]
Residential Real Estate [Member] | Default [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		0			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0			123
Financing Receivable, Originated Two Years before Latest Fiscal Year		676			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		466			1,024
Financing Receivable, Originated Four Years before Latest Fiscal Year		376			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		1,487			2,163
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	3,005			3,310
Residential Real Estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		557,643			277,949
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		426,721			184,974
Financing Receivable, Originated Two Years before Latest Fiscal Year		196,538			92,723
Financing Receivable, Originated Three Years before Latest Fiscal Year		95,689			97,915
Financing Receivable, Originated Four Years before Latest Fiscal Year		96,828			102,581
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		582,830			463,397
Financing Receivable, Revolving		0			0
Loans and Leases Receivable, Gross	[1]	1,956,249			1,219,539
Home Equity Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		37,298			58,897
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		61,898			68,629
Financing Receivable, Originated Two Years before Latest Fiscal Year		56,262			42,083
Financing Receivable, Originated Three Years before Latest Fiscal Year		32,883			37,644
Financing Receivable, Originated Four Years before Latest Fiscal Year		27,906			41,792
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		124,610			117,521
Financing Receivable, Revolving		743,123			630,292
Loans and Leases Receivable, Gross		1,087,170	[1]	$ 1,039,611	1,000,468	[1]
Home Equity Loan [Member] | Default [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		0			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0			0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		122			0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		285			33
Financing Receivable, Revolving		1,171			1,717
Loans and Leases Receivable, Gross	[1]	1,578			1,785
Home Equity Loan [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		37,298			58,897
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		61,898			68,629
Financing Receivable, Originated Two Years before Latest Fiscal Year		56,262			42,083
Financing Receivable, Originated Three Years before Latest Fiscal Year		32,761			37,644
Financing Receivable, Originated Four Years before Latest Fiscal Year		27,906			41,792
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		124,325			117,488
Financing Receivable, Revolving		741,952			628,575
Loans and Leases Receivable, Gross	[1]	1,085,592			998,683
Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		383			307
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		2,512			347
Financing Receivable, Originated Two Years before Latest Fiscal Year		1,969			244
Financing Receivable, Originated Three Years before Latest Fiscal Year		1,370			78
Financing Receivable, Originated Four Years before Latest Fiscal Year		380			500
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		3,641			5,338
Financing Receivable, Revolving		22,681			16,361
Loans and Leases Receivable, Gross	[1]	32,936			23,175
Consumer Loan [Member] | Default [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		0			0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		14			0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Three Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0			0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		11			0
Financing Receivable, Revolving		1			2
Loans and Leases Receivable, Gross	[1]	26			2
Consumer Loan [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss		383			307
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		2,498			347
Financing Receivable, Originated Two Years before Latest Fiscal Year		1,969			244
Financing Receivable, Originated Three Years before Latest Fiscal Year		1,370			78
Financing Receivable, Originated Four Years before Latest Fiscal Year		380			500
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		3,630			5,338
Financing Receivable, Revolving		22,680			16,359
Loans and Leases Receivable, Gross	[1]	32,910			23,173
Revolving converted to term [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		8,254			5,810
Revolving converted to term [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		1,070			0
Revolving converted to term [Member] | Commercial Real Estate [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		1,070			0
Revolving converted to term [Member] | Commercial Real Estate [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Commercial Real Estate [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Commercial Real Estate [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		3,362			66
Revolving converted to term [Member] | Commercial And Industrial [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	[2]	3,362			66
Revolving converted to term [Member] | Commercial And Industrial [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Commercial And Industrial [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Commercial And Industrial [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		632			2,134
Revolving converted to term [Member] | Construction Loans [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Construction Loans [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		632			2,134
Revolving converted to term [Member] | Construction Loans [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Construction Loans [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Construction Loans [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Small Business [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Small Business [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Small Business [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Small Business [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Small Business [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Residential Real Estate [Member] | Default [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Residential Real Estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Home Equity Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		3,190			3,610
Revolving converted to term [Member] | Home Equity Loan [Member] | Default [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			35
Revolving converted to term [Member] | Home Equity Loan [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		3,190			3,575
Revolving converted to term [Member] | Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Consumer Loan [Member] | Default [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		0			0
Revolving converted to term [Member] | Consumer Loan [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving		$ 0			$ 0
[1]Loan origination dates in the tables above reflect the original origination date, or the date of a material modification of a previously originated loan.[2]Loans originated as part of the Paycheck Protection Program ("PPP") established by the CARES Act are included within commercial and industrial under the 2021 and 2020 vintage year and "pass" category as these loans are 100% guaranteed by the U.S. Government. Outstanding PPP loans totaled $11.1 million and $383.6 million as of September 30, 2022 and 2021, respectively.

Loans, Allowance for Credit L_5

Loans, Allowance for Credit Losses and Credit Quality FICO and LTV (Details) - score		Sep. 30, 2022	Dec. 31, 2021
Residential Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable With Quality Of Loan Based On Weighted Average Fico Rating	[1]	753	749
Financing Receivable With Credit Quality Of Loan Based Upon the Weighted Average Loan-To-Value Ratio	[2]	54.80%	54.40%
Home Equity Portfolio
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable With Quality Of Loan Based On Weighted Average Fico Rating	[1]	771	772
Financing Receivable With Credit Quality Of Loan Based Upon the Weighted Average Loan-To-Value Ratio	[2],[3]	40.90%	42.40%
[1]The average FICO scores at September 30, 2022 are based upon rescores from June 2022, as available for previously originated loans, or origination score data for loans booked since June 2022.  The average FICO scores at December 31, 2021 were based upon rescores available from December 2021, as available for previously originated loans, or origination score data for loans booked in December 2021.[2]The combined LTV ratios for September 30, 2022 are based upon updated automated valuations as of August 2022, when available, and/or the most current valuation data available.  The combined LTV ratios for December 31, 2021 were based upon updated automated valuations as of November 2021, when available, and/or the most current valuation data available as of such date.  The updated automated valuations provide new information on loans that may be available since the previous valuation was obtained.  If no new information is available, the valuation will default to the previously obtained data or most recent appraisal.[3]For home equity loans and lines in a subordinate lien, the LTV data represents a combined LTV, taking into account the senior lien data for loans and lines.

Loans, Allowance for Credit L_6

Loans, Allowance for Credit Losses and Credit Quality Finance Receivable, Nonaccrual (Details) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance	[1]	$ 55,998	$ 27,199
Financing Receivable, Nonaccrual, No Allowance	[1]	19	621
Financing Receivable, Nonaccrual	[1]	56,017	27,820
Commercial And Industrial [Member]
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance		27,374	3,420
Financing Receivable, Nonaccrual, No Allowance		19	19
Financing Receivable, Nonaccrual		27,393	3,439
Commercial Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance		15,982	10,870
Financing Receivable, Nonaccrual, No Allowance		0	0
Financing Receivable, Nonaccrual		15,982	10,870
Small Business [Member]
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance		50	44
Financing Receivable, Nonaccrual, No Allowance		0	0
Financing Receivable, Nonaccrual		50	44
Residential Real Estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance		8,891	8,580
Financing Receivable, Nonaccrual, No Allowance		0	602
Financing Receivable, Nonaccrual		8,891	9,182
Home Equity Loan [Member]
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance		3,485	3,781
Financing Receivable, Nonaccrual, No Allowance		0	0
Financing Receivable, Nonaccrual		3,485	3,781
Consumer - Other [Member]
Financing Receivable, Nonaccrual [Line Items]
Finance Receivable, Nonaccrual, with allowance		216	504
Financing Receivable, Nonaccrual, No Allowance		0	0
Financing Receivable, Nonaccrual		$ 216	$ 504
[1]Included in these amounts were $1.5 million and $2.0 million of nonaccruing TDRs at September 30, 2022 and December 31, 2021, respectively.

Loans, Allowance for Credit L_7

Loans, Allowance for Credit Losses and Credit Quality Foreclosed Residential Real Estate Property (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Receivables [Abstract]
Foreclosed residential real estate property held by the creditor	$ 0	$ 0
Mortgage Loans in Process of Foreclosure, Amount	$ 1,871	$ 1,426

Loans, Allowance for Credit L_8

Loans, Allowance for Credit Losses and Credit Quality Financing Receivable Past Due (Details) $ in Thousands		Sep. 30, 2022 USD ($) loan		Dec. 31, 2021 USD ($) loan	Sep. 30, 2021 USD ($)
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		559		518
Financing Receivable, 90 Days or More Past Due, Still Accruing		$ 0		$ 0
Loans and Leases Receivable, Gross		$ 13,700,350	[1]	$ 13,587,286	$ 8,808,013
Number Of Financing Receivables Total Past Due | loan		676		701
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		60		60
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		57		123
Total loans		$ 13,700,350		$ 13,587,286
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		10,164		37,927
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		8,571		1,677
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		4,202		7,092
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		13,677,413		13,540,590
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 22,937		$ 46,696
Commercial And Industrial [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		10		7
Financing Receivable, 90 Days or More Past Due, Still Accruing		$ 0		$ 0
Loans and Leases Receivable, Gross		$ 1,548,349	[1]	$ 1,563,279	1,640,709	[1]
Number Of Financing Receivables Total Past Due | loan		14		11
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		1		2
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		3		2
Total loans		$ 1,548,349		$ 1,563,279
Commercial And Industrial [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		322		143
Commercial And Industrial [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		182		252
Commercial And Industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		558		24
Commercial And Industrial [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		1,547,287		1,562,860
Commercial And Industrial [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 1,062		$ 419
Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		9		15
Financing Receivable, 90 Days or More Past Due, Still Accruing		$ 0		$ 0
Loans and Leases Receivable, Gross		$ 7,677,917	[1]	$ 7,992,344	4,221,259	[1]
Number Of Financing Receivables Total Past Due | loan		16		19
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		5		0
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		2		4
Total loans		$ 7,677,917		$ 7,992,344
Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		5,419		32,845
Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		4,491		0
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		208		1,339
Commercial Real Estate [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		7,667,799		7,958,160
Commercial Real Estate [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 10,118		$ 34,184
Construction Loans [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		0		0
Financing Receivable, 90 Days or More Past Due, Still Accruing		$ 0		$ 0
Loans and Leases Receivable, Gross		$ 1,185,157	[1]	$ 1,165,457	515,415	[1]
Number Of Financing Receivables Total Past Due | loan		1		0
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		1		0
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		0		0
Total loans		$ 1,185,157		$ 1,165,457
Construction Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		0		0
Construction Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		1,661		0
Construction Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		0		0
Construction Loans [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		1,183,496		1,165,457
Construction Loans [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 1,661		$ 0
Small Business [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		7		11
Financing Receivable, 90 Days or More Past Due, Still Accruing		$ 0		$ 0
Loans and Leases Receivable, Gross		$ 209,567	[1]	$ 193,189	184,138	[1]
Number Of Financing Receivables Total Past Due | loan		16		21
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		3		6
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		6		4
Total loans		$ 209,567		$ 193,189
Small Business [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		233		136
Small Business [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		15		53
Small Business [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		29		24
Small Business [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		209,290		192,976
Small Business [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 277		$ 213
Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		15		12
Financing Receivable, 90 Days or More Past Due, Still Accruing		$ 0		$ 0
Loans and Leases Receivable, Gross		$ 1,959,254	[1]	$ 1,604,686	1,222,849	[1]
Number Of Financing Receivables Total Past Due | loan		40		93
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		6		5
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		19		76
Total loans		$ 1,959,254		$ 1,604,686
Residential Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		3,146		2,709
Residential Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		1,202		714
Residential Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		1,804		3,922
Residential Real Estate [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		1,953,102		1,597,341
Residential Real Estate [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 6,152		$ 7,345
Home Equity Loan [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan		14		15
Financing Receivable, 90 Days or More Past Due, Still Accruing		$ 0		$ 0
Loans and Leases Receivable, Gross		$ 1,087,170	[1]	$ 1,039,611	$ 1,000,468	[1]
Number Of Financing Receivables Total Past Due | loan		41		42
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan		8		6
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan		19		21
Home Equity Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		$ 534		$ 1,375
Home Equity Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		775		381
Home Equity Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans		1,577		1,671
Home Equity Loan [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans		1,084,284		1,036,184
Home Equity Loan [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans		$ 2,886		$ 3,427
Consumer - Other [Member]
Financing Receivable, Past Due [Line Items]
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan	[2]	504		458
Financing Receivable, 90 Days or More Past Due, Still Accruing	[2]	$ 0		$ 0
Loans and Leases Receivable, Gross	[2]	$ 32,936		$ 28,720
Number Of Financing Receivables Total Past Due | loan	[2]	548		515
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan	[2]	36		41
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan	[2]	8		16
Total loans		$ 32,936		$ 28,720
Consumer - Other [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans	[2]	510		719
Consumer - Other [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans	[2]	245		277
Consumer - Other [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total loans	[2]	26		112
Consumer - Other [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Total loans	[2]	32,155		27,612
Consumer - Other [Member] | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Total loans	[2]	$ 781		$ 1,108
[1]Loan origination dates in the tables above reflect the original origination date, or the date of a material modification of a previously originated loan.[2]Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances.

Loans, Allowance for Credit L_9

Loans, Allowance for Credit Losses and Credit Quality Troubled Debt Restructurings (Details)	3 Months Ended				9 Months Ended
	Sep. 30, 2022 USD ($) contract		Sep. 30, 2021 USD ($) contract		Sep. 30, 2022 USD ($) contract	Sep. 30, 2021 USD ($) contract		Dec. 31, 2021 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	1		0		1	8
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 68,000	[1]	$ 0	[1]	$ 68,000	$ 18,301,000	[1]
Financing Receivable, Troubled Debt Restructuring, Postmodification	67,000	[1]	$ 0	[1]	67,000	$ 18,301,000	[1]
Tdrs Recorded Investment On Accrual Status	11,549,000				11,549,000			$ 14,635,000
Tdrs Recorded Investment On Nonaccrual Status	1,538,000				1,538,000			1,993,000
Financing Receivable Recorded Investment Trouble Debt Restructuring	13,087,000				13,087,000			16,628,000
Additional Commitments To Lend To Borrower For Trouble Debt Restructuring	$ 137,000				$ 137,000			$ 190,000
Commercial And Industrial [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	1		0		1	1
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 68,000		$ 0		$ 68,000	$ 14,148,000
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 67,000		$ 0		$ 67,000	$ 14,148,000
Commercial Real Estate [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract			0			5
Financing Receivable, Troubled Debt Restructuring, Premodification			$ 0			$ 3,964,000
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 0			$ 3,964,000
Small Business [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract			0			2
Financing Receivable, Troubled Debt Restructuring, Premodification			$ 0			$ 189,000
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 0			$ 189,000
[1]The pre-modification and post-modification balances represent the legal principal balance of the loan. Activity presented in the table above includes $14.3 million of modifications on existing TDRs occurring during the nine months ended September 30, 2021.

Loans, Allowance for Credit _10

Loans, Allowance for Credit Losses and Credit Quality TDR on Financing Receivables Post Modification (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2022		Sep. 30, 2021		Sep. 30, 2022	Sep. 30, 2021
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 67	[1]	$ 0	[1]	$ 67	$ 18,301	[1]
Combination rate and maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	0		0		0	14,148
Extended Maturity [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 67		$ 0		$ 67	$ 4,153
[1]The pre-modification and post-modification balances represent the legal principal balance of the loan. Activity presented in the table above includes $14.3 million of modifications on existing TDRs occurring during the nine months ended September 30, 2021.

Loans, Allowance for Credit _11

Loans, Allowance for Credit Losses and Credit Quality Textual (Details) - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2022		Sep. 30, 2021		Sep. 30, 2022		Sep. 30, 2021		Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Days To Be Termed As Non Accrual Loans					90 days
Provision for (release of) credit losses	$ 3,000,000		$ (10,000,000)		$ 1,000,000		$ (17,500,000)
Total loans	13,700,350,000				13,700,350,000					$ 13,587,286,000
Interest Receivable	42,700,000		36,700,000		42,700,000		36,700,000
Off-Balance Sheet, Credit Loss, Liability	1,300,000				1,300,000					1,500,000
Loans with active Deferrals	193,300,000				193,300,000					383,100,000
Allowance for Loan and Lease Losses, Write-offs	(741,000)
us-gaap_FinancingReceivableTroubledDebtRestructuringIncreaseDecreaseFromModification	14,300,000
Financing Receivable, after Allowance for Credit Loss	2,347,498,000		1,845,455,000		2,347,498,000		1,845,455,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	0						0
Financing Receivable, Allowance for Credit Loss	147,313,000	[1]	92,246,000	[1]	147,313,000	[1]	92,246,000	[1]	$ 144,319,000	146,922,000	$ 102,357,000	$ 113,392,000
Loans with active Deferrals	193,300,000				193,300,000					383,100,000
Interest Receivable	42,700,000		36,700,000		42,700,000		36,700,000
Off-Balance Sheet, Credit Loss, Liability	1,300,000				1,300,000					1,500,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	0						0
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for (release of) credit losses			(1,018,000)		5,723,000		(1,698,000)
Total loans	1,548,349,000				1,548,349,000					1,563,279,000
Allowance for Loan and Lease Losses, Write-offs	0
Financing Receivable, after Allowance for Credit Loss	296,626,000		608,467,000		296,626,000		608,467,000
Financing Receivable, Allowance for Credit Loss	20,169,000	[1]	16,014,000	[1]	20,169,000	[1]	16,014,000	[1]	$ 14,107,000	$ 14,402,000	$ 17,032,000	$ 21,086,000
Commercial And Industrial [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, after Allowance for Credit Loss	2,485,000		16,597,000		2,485,000		16,597,000
Loans Insured or Guaranteed by US Government Authorities
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 11,100,000		$ 383,600,000		$ 11,100,000		$ 383,600,000
[1]Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $42.7 million and $36.7 million as of September 30, 2022 and September 30, 2021, respectively.

Stock Based Compensation (Award

Stock Based Compensation (Awards of Restricted Stock) (Details) - Restricted Stock [Member]	9 Months Ended
	Sep. 30, 2022 $ / shares shares
Ratably Over Period [Member] | 2/17/2022 | Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted | shares	52,100
Grant Date Fair Value Per Share | $ / shares	$ 84.70
Vesting Period	Ratably over 5 years from grant date
Ratably Over Period [Member] | 9/15/2022 | Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted | shares	646
Grant Date Fair Value Per Share | $ / shares	$ 77.44
Vesting Period	Ratably over 5 years from grant date
Immediate Vest on grant date [Member] | 5/24/2022 | Two Thousand Eighteen Nonemployee Director Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Granted | shares	8,099
Grant Date Fair Value Per Share | $ / shares	$ 80.39
Vesting Period	Shares vested immediately

Stock Based Compensation Perfor

Stock Based Compensation Performance-based Restricted Stock Textual (Details) - Employee Stock Plan [Member] - Performance Shares [Member]	9 Months Ended
	Sep. 30, 2022 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted	20,700
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares	$ 84.70
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	7,450

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities (Derivative Positions for Interest Rate Swaps which Qualify as Hedges) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Interest rate swaps on borrowings [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Fair Value		$ (294)
Derivative, Notional Amount		$ 25,000
Derivative, Average Remaining Maturity		7 months 13 days
Derivative, Average Variable Interest Rate		0.16%
Derivative, Average Fixed Interest Rate		1.88%
Interest rate swaps on loans [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Fair Value	$ (43,365)	$ 11,830
Derivative, Notional Amount	$ 1,050,000	$ 550,000
Derivative, Average Remaining Maturity	3 years 2 months 23 days	2 years 6 months 29 days
Derivative, Average Variable Interest Rate	2.72%	0.11%
Derivative, Average Fixed Interest Rate	2.66%	2.16%
Interest rate collars on loans [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Fair Value	$ (10,375)	$ 9,383
Derivative, Notional Amount	$ 400,000	$ 400,000
Derivative, Average Remaining Maturity	2 years 6 months 7 days	1 year 7 months 28 days
Derivative, Average Variable Interest Rate	2.69%	0.11%
Derivative, Average Cap Interest Rate	3.09%	2.73%
Derivative, Average Floor Interest Rate	2.19%	2.20%
Interest Rate Swap [Member]
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes
Fair Value	$ (53,740)	$ 20,919
Derivative, Notional Amount	$ 1,450,000	$ 975,000

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities (Customer Related Derivative Positions - Not Designated as Hedges) (Details) - Not Designated as Hedging Instrument $ in Thousands		Sep. 30, 2022 USD ($) position	Dec. 31, 2021 USD ($) position
Receive fixed, pay variable | Loan level swaps
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	[1]	285	296
Less than 1 year		$ 82,932	$ 37,589
Less than 2 years		98,409	139,844
Less than 3 years		259,419	123,507
Less than 4 years		173,197	260,953
Thereafter		953,915	1,060,276
Derivative, Notional Amount		1,567,872	1,622,169
Fair Value		$ (127,611)	$ 55,984
Pay fixed, receive variable | Loan level swaps
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	[1]	285	296
Less than 1 year		$ 82,932	$ 37,589
Less than 2 years		98,409	139,844
Less than 3 years		259,419	123,507
Less than 4 years		173,197	260,953
Thereafter		953,915	1,060,276
Derivative, Notional Amount		1,567,872	1,622,169
Fair Value		$ 127,609	$ (55,982)
Buys foreign currency, sells U.S. currency | Foreign exchange contracts
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	[1]	62	52
Less than 1 year		$ 162,094	$ 149,588
Less than 2 years		13,013	8,784
Less than 3 years		0	0
Less than 4 years		0	0
Thereafter		0	0
Derivative, Notional Amount		175,107	158,372
Fair Value		$ (15,992)	$ 5,734
Buys U.S. currency, sells foreign currency | Foreign exchange contracts
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	[1]	62	52
Less than 1 year		$ 162,094	$ 149,588
Less than 2 years		13,013	8,784
Less than 3 years		0	0
Less than 4 years		0	0
Thereafter		0	0
Derivative, Notional Amount		175,107	158,372
Fair Value		$ 16,079	$ (5,734)
Risk Participated Out | Risk Participation Agreement
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position		11	11
Less than 1 year		$ 2,605	$ 0
Less than 2 years		0	2,635
Less than 3 years		24,538	7,138
Less than 4 years		0	24,539
Thereafter		72,045	68,408
Derivative, Notional Amount		99,188	102,720
Fair Value		$ 64	$ 279
Risk Participated In | Risk Participation Agreement
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position		7	7
Less than 1 year		$ 22,802	$ 29,972
Less than 2 years		16,329	28,235
Less than 3 years		0	0
Less than 4 years		0	0
Thereafter		25,944	8,339
Derivative, Notional Amount		65,075	66,546
Fair Value		$ (15)	$ (55)
[1]The Company may enter into one dealer swap agreement which offsets multiple commercial borrower swap agreements.

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities (FV of Derivative Financial Instruments and Classification on Balance Sheet) (Details) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivative Asset	[1]	$ 81,760	$ 92,185
Derivative Liability	[2]	162,538	69,246
Derivative Asset, Fair Value, Amount Offset Against Collateral	[1]	64,016	69,807
Derivative, Collateral, Obligation to Return Securities	[3]	17,744	22,378
Derivative, Collateral, Right to Reclaim Securities	[3]	17,744	22,378
Derivative, Collateral, Obligation to Return Cash		0	0
Derivative, Collateral, Right to Reclaim Cash		0	33,838
Derivative Liability, Fair Value, Amount Offset Against Collateral	[2]	144,794	13,030
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	[1]	144,374	75,961
Derivative Asset, Fair Value, Gross Asset	[1]	144,374	97,912
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	[2]	144,091	74,983
Liability Derivatives	[2]	197,831	76,015
Interest Rate Swap [Member] | Derivatives designated as hedges [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Assets, at Fair Value	[1]	0	21,951	[4]
Interest Rate Swap [Member] | Derivatives designated as hedges [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	[2],[5]	53,740	1,032
Loan level swaps | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1],[4]	127,625	68,726
Loan level swaps | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	[2],[5]	127,627	68,724
Foreign Exchange Contract [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	16,520	6,147
Foreign Exchange Contract [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	[2]	16,433	6,147
Risk Participation Agreement | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Credit Risk Derivative Assets, at Fair Value	[1]	64	279
Risk Participation Agreement | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Credit Risk Derivative Liabilities, at Fair Value	[2]	15	55
Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Instrument Not Designated as a Hedge, Interest Rate Lock Commitments, Asset at Fair Value	[1]	6	753
Derivative Instrument Not Designated as a Hedge, Forward Sales Agreements, Asset at Fair Value	[1]	86	56
Derivative Instrument Not Designated as a Hedge, Forward Sale Hedge Commitment, Asset at Fair Value	[1]	73	0
Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Instrument Not Designated as a Hedge, Interest Rate Lock Commitments, Liabilities at Fair Value		16	0	[2]
Derivative Instrument Not Designated as a Hedge, Forward Sales Agreements, Liabilities at Fair Value	[2]	0	0
Derivative Instrument Not Designated as a Hedge, Forward Sale Hedge Commitment, Liability at Fair Value	[2]	0	57
CME [Member]
Derivatives, Fair Value [Line Items]
Derivative, Collateral, Obligation to Return Cash	[6]	62,614	5,727
Derivative, Collateral, Right to Reclaim Cash	[6]	$ 35,293	$ 6,769
[1]All asset derivatives are reflected in other assets on the balance sheet.[2]All liability derivatives are reflected in other liabilities on the balance sheet.[3]Reflects offsetting derivative positions with the same counterparty that are not netted on the balance sheet.[4]Approximately $660,000 of accrued interest receivable is included in the fair value of the loan level derivative assets at September 30, 2022, in comparison to accrued interest receivable of approximately $1.2 million and $1.5 million in included in the fair value of interest rate and loan level derivative assets, respectively, at December 31, 2021.[5]Approximately $36,000 and $660,000 of accrued interest payable is included in the fair value of interest rate and loan level derivative liabilities, respectively, at September 30, 2022. Accrued interest payable of approximately $5,000 and $1.5 million is included in the fair value of the interest rate and loan level derivative liabilities, respectively, at December 31, 2021.[6]Netting adjustments represent the amounts recorded to convert derivative assets and liabilities cleared through CME from a gross basis to a net basis, inclusive of the variation margin payments, in accordance with applicable accounting guidance. As displayed in the table above, derivatives that cleared through the CME were either in a net asset position or a net liability position at September 30, 2022.

Derivatives and Hedging Activ_6

Derivatives and Hedging Activities (Derivative Financial Instruments included in OCI and Current Earnings) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	$ (27,144)	$ (3,383)	$ (52,743)	$ (11,559)
Derivatives designated as hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain reclassified from OCI into interest income or interest expense (effective portion)	407	4,791	8,427	13,869
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Other income	0	(239)	(695)	(4,077)
Other expense | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Other income	26	54	147	137
Changes in fair value of mortgage derivatives | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Other income	(67)	(80)	(239)	(374)
Total | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Mortgage banking income	41	(213)	(603)	(3,840)
Derivatives designated as hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	$ (27,144)	$ (3,383)	$ (52,743)	$ (11,559)

Derivatives and Hedging Activ_7

Derivatives and Hedging Activities (Textual) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Derivative [Line Items]
Derivative, Net Liability Position, Aggregate Fair Value	$ 0		$ 0		$ 34,800,000
Maximum Length of Time Hedged in Interest Rate Cash Flow Hedge			6 years 6 months
Gain (Loss) on Sales of Loans, Net	229,000	$ 4,900,000	$ 550,000	$ 17,200,000
Exposure to Institutional Counterparties	127,600,000		127,600,000		28,300,000
Customer related positions	8,000		8,000		62,400,000
Fair Value Hedges, Net	0		0		$ 0
Change in Fair Value on Loans Held for Sale	(194,000)	(75,000)	(620,000)	(1,534,000)
Interest Receivable	$ 42,700,000	$ 36,700,000	42,700,000	$ 36,700,000
Interest Expense [Member]
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			$ (22,500,000)
Interest rate collars on loans [Member]
Derivative [Line Items]
Derivative, Average Cap Interest Rate	3.09%		3.09%		2.73%
Derivative, Average Floor Interest Rate	2.19%		2.19%		2.20%
Derivative, Notional Amount	$ 400,000,000		$ 400,000,000		$ 400,000,000
Loan level swaps
Derivative [Line Items]
Interest Payable, Current	660,000		660,000		1,500,000
Interest Receivable	660,000		660,000		1,500,000
Interest rate swaps on borrowings [Member]
Derivative [Line Items]
Derivative, Notional Amount					25,000,000
Interest rate swaps on loans [Member]
Derivative [Line Items]
Derivative, Notional Amount	1,050,000,000		1,050,000,000		550,000,000
Interest Rate Swap [Member]
Derivative [Line Items]
Interest Payable, Current	36,000		36,000		5,000
Derivative, Notional Amount	1,450,000,000		1,450,000,000		975,000,000
Interest Receivable	$ 0		$ 0		$ 1,200,000

Fair Value Measurements (Detail

Fair Value Measurements (Details 1) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
ASSETS
Trading		$ 3,538	$ 3,720
Equity		20,439	23,173
Available for sale (amortized cost $1,605,913 and $1,583,736)		1,425,511	1,571,148
Recurring fair value measurements
ASSETS
Trading		3,538	3,720
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS		1,401,131	1,644,617
Recurring fair value measurements | Equity Securities [Member]
ASSETS
Equity		20,439	23,173
Recurring fair value measurements | U.S. government agency securities
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		199,942	215,482
Recurring fair value measurements | Agency mortgage-backed securities
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		344,153	363,933
Recurring fair value measurements | Agency collateralized mortgage obligations
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		40,787	79,677
Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		187	203
Recurring fair value measurements | Single issuer trust preferred securities issued by banks and insurers
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		489	491
Recurring fair value measurements | Pooled trust preferred securities issued by banks and insurers
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		999	1,000
Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		54,496	48,914
Recurring fair value measurements | Loans held for sale
ASSETS
Loans Held-for-sale, Fair Value Disclosure		5,100	24,679
Recurring fair value measurements | Derivative Financial Instruments, Assets [Member]
ASSETS
Derivative Asset, Fair Value, Gross Asset		144,374	97,912
Recurring fair value measurements | Derivative instruments
LIABILITIES
Financial and Nonfinancial Liabilities, Fair Value Disclosure		197,831	76,015
Recurring fair value measurements | US Treasury Securities [Member]
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		784,458	861,448
Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS		13,020	1,174
Nonrecurring fair value measurements | Collateral Dependent Loans [Member]
ASSETS
Assets, Fair Value Disclosure	[1]	13,020	1,174
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements
ASSETS
Trading		3,538	3,720
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS		23,977	26,893
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements | Equity Securities [Member]
ASSETS
Equity		20,439	23,173
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)			0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS		0	0
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS		1,377,154	1,617,724
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Equity Securities [Member]
ASSETS
Equity		0	0
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | U.S. government agency securities
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		199,942	215,482
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Agency mortgage-backed securities
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		344,153	363,933
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Agency collateralized mortgage obligations
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		40,787	79,677
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		187	203
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Single issuer trust preferred securities issued by banks and insurers
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		489	491
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Pooled trust preferred securities issued by banks and insurers
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		999	1,000
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		54,496	48,914
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Loans held for sale
ASSETS
Loans Held-for-sale, Fair Value Disclosure		5,100	24,679
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Derivative Financial Instruments, Assets [Member]
ASSETS
Derivative Asset, Fair Value, Gross Asset		144,374	97,912
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | Derivative instruments
LIABILITIES
Financial and Nonfinancial Liabilities, Fair Value Disclosure		197,831	76,015
Significant Other Observable Inputs (Level 2) | Recurring fair value measurements | US Treasury Securities [Member]
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		784,458	861,448
Significant Other Observable Inputs (Level 2) | Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS		0	0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements
LIABILITIES
TOTAL RECURRING FAIR VALUE MEASUREMENTS		0	0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements | Equity Securities [Member]
ASSETS
Equity		0	0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements | Municipal Bonds [Member]
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)			0
Significant Unobservable Inputs (Level 3) | Recurring fair value measurements | Small Business Administration Pooled Securities [Member]
ASSETS
Available for sale (amortized cost $1,605,913 and $1,583,736)		0	0
Significant Unobservable Inputs (Level 3) | Nonrecurring fair value measurements
LIABILITIES
TOTAL NONRECURRING FAIR VALUE MEASUREMENTS		13,020	1,174
Significant Unobservable Inputs (Level 3) | Nonrecurring fair value measurements | Collateral Dependent Loans [Member]
ASSETS
Assets, Fair Value Disclosure	[1]	$ 13,020	$ 1,174
[1]The carrying value of individually assessed collateral dependent loans is based on the lower of amortized cost or fair value of the underlying collateral less costs to sell. The fair value of the underlying collateral is generally determined through independent appraisals, which generally include various Level 3 inputs which are not identifiable. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of these possible adjustments may vary.

Fair Value Measurements (Deta_2

Fair Value Measurements (Details 2) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
ASSETS
Debt Securities, Held-to-maturity		$ 1,697,635	$ 1,066,818
Held to Maturity, Fair Value, Total		1,509,985	1,064,133
Federal Home Loan Bank Stock		5,218	11,407
Bank Owned Life Insurance		293,126	289,304
LIABILITIES
Federal Home Loan Bank borrowings (f)		643	25,667
Long-term Debt	[1]		14,063
Long-term Debt, Fair Value	[1]		13,989
Subordinated Debt		49,862	49,791
Deposits [Member]
LIABILITIES
Time certificates of deposits (f)	[2]	15,160,375	15,385,894
Accrued Liabilities, Fair Value Disclosure	[2]	15,160,375	15,385,894
Time certificates of deposits (f)
LIABILITIES
Time certificates of deposits (f)	[1]	1,178,619	1,531,150
Accrued Liabilities, Fair Value Disclosure	[1]	1,147,506	1,529,857
Federal Home Loan Bank borrowings (f)
LIABILITIES
Federal Home Loan Bank borrowings (f)	[1]	643	25,667
Federal Home Loan Bank Borrowings, Fair Value Disclosure	[1]	571	25,663
Junior subordinated debentures (g)
LIABILITIES
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust	[3]	62,855	62,853
Accrued Liabilities, Fair Value Disclosure	[3]	59,770	67,019
Subordinated debentures (f)
LIABILITIES
Subordinated Debt	[1]	49,862	49,791
Accrued Liabilities, Fair Value Disclosure	[1]	44,066	45,532
Quoted Prices in Active Markets for Identical Assets (Level 1) | Long-term Debt [Member]
LIABILITIES
Long-term Debt, Fair Value	[1]		0
Significant Other Observable Inputs (Level 2) | Deposits [Member]
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	[2]	15,160,375	15,385,894
Significant Other Observable Inputs (Level 2) | Time certificates of deposits (f)
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	[1]	1,147,506	1,529,857
Significant Other Observable Inputs (Level 2) | Federal Home Loan Bank borrowings (f)
LIABILITIES
Federal Home Loan Bank Borrowings, Fair Value Disclosure	[1]	571	25,663
Significant Other Observable Inputs (Level 2) | Long-term Debt [Member]
LIABILITIES
Long-term Debt, Fair Value	[1]		13,989
Significant Other Observable Inputs (Level 2) | Junior subordinated debentures (g)
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	[3]	59,770	67,019
Significant Unobservable Inputs (Level 3) | Long-term Debt [Member]
LIABILITIES
Long-term Debt, Fair Value	[1]		0
Significant Unobservable Inputs (Level 3) | Subordinated debentures (f)
LIABILITIES
Accrued Liabilities, Fair Value Disclosure	[1]	44,066	45,532
U.S. Government agency securities
ASSETS
Debt Securities, Held-to-maturity		31,696	32,987	[4]
Held to Maturity, Fair Value, Total		29,303	32,546	[4]
U.S. Government agency securities | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total		29,303	32,546	[4]
U.S. treasury securities
ASSETS
Debt Securities, Held-to-maturity	[4]	100,615	102,560
Held to Maturity, Fair Value, Total	[4]	87,992	102,242
U.S. treasury securities | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	[4]	87,992	102,242
Agency mortgage-backed securities
ASSETS
Debt Securities, Held-to-maturity	[4]	892,102	493,012
Held to Maturity, Fair Value, Total	[4]	802,093	497,236
Agency mortgage-backed securities | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	[4]	802,093	497,236
Agency collateralized mortgage obligations
ASSETS
Debt Securities, Held-to-maturity	[4]	553,995	415,736
Held to Maturity, Fair Value, Total	[4]	476,970	408,845
Agency collateralized mortgage obligations | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	[4]	476,970	408,845
Single issuer trust preferred securities issued by banks
ASSETS
Debt Securities, Held-to-maturity	[4]	1,500	1,500
Held to Maturity, Fair Value, Total	[4]	1,508	1,508
Single issuer trust preferred securities issued by banks | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	[4]	1,508	1,508
Small Business Administration Pooled Securities [Member]
ASSETS
Debt Securities, Held-to-maturity	[4]	117,727	21,023
Held to Maturity, Fair Value, Total	[4]	112,119	21,756
Small Business Administration Pooled Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
ASSETS
Held to Maturity, Fair Value, Total	[4]	0	0
Small Business Administration Pooled Securities [Member] | Significant Other Observable Inputs (Level 2)
ASSETS
Held to Maturity, Fair Value, Total	[4]	112,119	21,756
Small Business Administration Pooled Securities [Member] | Significant Unobservable Inputs (Level 3)
ASSETS
Held to Maturity, Fair Value, Total	[4]	0	0
Loans, net of allowance for credit losses (b)
ASSETS
Loans, net of allowance for credit losses (b)	[5]	13,540,017	13,439,190
Loans Receivable, Fair Value Disclosure	[5]	13,208,966	13,389,515
Loans, net of allowance for credit losses (b) | Significant Unobservable Inputs (Level 3)
ASSETS
Loans Receivable, Fair Value Disclosure	[5]	13,208,966	13,389,515
Investment in Federal Home Loan Bank Stock [Member]
ASSETS
Federal Home Loan Bank Stock	[6]	5,218	11,407
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	[6]	5,218	11,407
Investment in Federal Home Loan Bank Stock [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
ASSETS
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	[6]	0	0
Investment in Federal Home Loan Bank Stock [Member] | Significant Other Observable Inputs (Level 2)
ASSETS
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	[6]	5,218	11,407
Investment in Federal Home Loan Bank Stock [Member] | Significant Unobservable Inputs (Level 3)
ASSETS
Investment in Federal Home Loan Bank Stock, Fair Value Disclosure	[6]	0	0
Cash Surrender Value [Member]
ASSETS
Cash Surrender Value, Fair Value Disclosure	[7]	293,126	289,304
Bank Owned Life Insurance	[7]	293,126	289,304
Cash Surrender Value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
ASSETS
Cash Surrender Value, Fair Value Disclosure	[7]	0	0
Cash Surrender Value [Member] | Significant Other Observable Inputs (Level 2)
ASSETS
Cash Surrender Value, Fair Value Disclosure	[7]	293,126	289,304
Cash Surrender Value [Member] | Significant Unobservable Inputs (Level 3)
ASSETS
Cash Surrender Value, Fair Value Disclosure	[7]	$ 0	$ 0
[1]Fair value was determined by discounting anticipated future cash payments using rates currently available for instruments with similar remaining maturities.[2]Fair value of demand deposits, savings and interest checking accounts and money market deposits is the amount payable on demand at the reporting date.[3]Fair value was determined based upon market prices of securities with similar terms and maturities.[4]The fair values presented are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments and/or discounted cash flow analysis.[5]Fair value of loans is measured using the exit price valuation method, determined primarily by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities or cash flows, while incorporating liquidity and credit assumptions. Additionally, this amount excludes individually assessed collateral dependent loans, which are deemed to be marked to fair value on a nonrecurring basis.[6]Federal Home Loan Bank stock has no quoted market value and is carried at cost; therefore, the carrying amount approximates fair value.[7]Cash surrender value of life insurance policies is recorded at its cash surrender value (or the amount that can be realized upon surrender of the policy), therefore, carrying amount approximates fair value.

Revenue Recognition Disaggregat

Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Other noninterest income - ASC 606	$ 1,782	$ 1,362	$ 4,650	$ 3,732
Total noninterest income in scope of ASC 606	21,285	18,573	62,094	52,137
Total noninterest income out of scope of ASC 606	6,910	7,884	20,271	24,533
Noninterest Income	28,195	26,457	82,365	76,670
Deposit Account [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	6,261	4,298	17,582	11,704
Credit Card, Merchant Discount [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,833	2,223	8,043	6,267
ATM Charge [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,066	817	2,900	2,177
Investment Advisory, Management and Administrative Service [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	7,834	8,147	23,563	23,576
Investment Advisory, Retail Investment and Insurance Service [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	602	1,027	2,875	2,774
Merchant Processing [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	412	365	1,140	1,024
Credit Card Income [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 495	$ 334	$ 1,341	$ 883

Revenue Recognition Contract wi

Revenue Recognition Contract with Customer, Asset (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Investment Management Income Receivable	$ 4,401	$ 5,385

Comprehensive Income_Loss (Comp

Comprehensive Income/Loss (Comprehensive Income/(Loss) Presented Net of Taxes) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Equity [Abstract]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax		$ (37,764)	$ (4,707)	$ (73,390)	$ (16,083)
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments, Tax		10,620	1,324	20,647	4,524
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		(27,144)	(3,383)	(52,743)	(11,559)
COMPREHENSIVE INCOME
Change in fair value of securities available for sale, pre tax amount		(55,461)	(10,337)	(167,814)	(15,589)
Change in fair value of securities available for sale, tax (expense) benefit		12,879	2,440	38,942	3,711
Change in fair value of securities available for sale, after tax amount		(42,582)	(7,897)	(128,872)	(11,878)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax		0	0	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax		0	0	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax		0	0	0	0
Change in fair value of securities available for sale, pre tax amount		(55,461)	(10,337)	(167,814)	(15,589)
Change in fair value of securities available for sale, tax (expense) benefit		12,879	2,440	38,942	3,711
Change in fair value of securities available for sale, after tax amount		(42,582)	(7,897)	(128,872)	(11,878)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax		(37,357)	84	(64,963)	(2,214)
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments, Tax		10,505	(23)	18,277	624
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax		(26,852)	61	(46,686)	(1,590)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax		407	4,791	8,427	13,869
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, Tax		(115)	(1,347)	(2,370)	(3,900)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax		292	3,444	6,057	9,969
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax			0		653
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax			0		(184)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax			0		469
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax		159	346	476	1,037
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax		(45)	(97)	(134)	(291)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax		114	249	342	746
Amortization of certain costs included in net periodic retirement costs, pre tax amount		10	44	29	131
Amortization of certain costs included in net periodic retirement costs, tax (expense) benefit		(3)	(13)	(8)	(37)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax		7	31	21	94
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	[1]	169	390	505	1,821
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	[1]	(48)	(110)	(142)	(512)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	[1]	121	280	363	1,309
Total other comprehensive income, pre tax amount		(93,056)	(14,654)	(240,699)	(29,851)
Total other comprehensive income, tax (expense) benefit		23,451	3,654	59,447	7,723
Total other comprehensive income, after tax amount		$ (69,605)	$ (11,000)	$ (181,252)	$ (22,128)
[1] The amortization of prior service costs is included in the computation of net periodic pension cost as disclosed in Note 14 "Employee Benefit Plans" within the Notes to the Consolidated Financial Statements included in Item 8 of the Company's 2021 Form 10-K.

Comprehensive Income_Loss (Co_2

Comprehensive Income/Loss (Comprised of the following Components) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ 2,183	$ 40,695
Net change in other comprehensive income (loss)	$ (69,605)	$ (11,000)	(181,252)	(22,128)
Ending Balance	(179,069)	18,567	(179,069)	18,567
Unrealized Gain (Loss) on Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(9,667)	13,255
Net change in other comprehensive income (loss)			(128,872)	(11,878)
Ending Balance	(138,539)	1,377	(138,539)	1,377
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			14,137	33,276
Net change in other comprehensive income (loss)			(52,743)	(11,559)
Ending Balance	(38,606)	21,717	(38,606)	21,717
Defined Benefit Postretirement Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(2,287)	(5,836)
Net change in other comprehensive income (loss)			363	1,309
Ending Balance	(1,924)	(4,527)	(1,924)	(4,527)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net change in other comprehensive income (loss)	$ (69,605)	$ (11,000)	$ (181,252)	$ (22,128)

Commitments and contingencies F

Commitments and contingencies Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	$ 4,552,576	$ 4,535,895
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	25,565	24,412
Deferred standby letter of credit fees [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	187	124
Obligation to Repurchase Receivables Sold [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	$ 171,437	$ 202,717

Commitments and contingencies T

Commitments and contingencies Textual (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($)
Operating Lease, Impairment Loss	$ 4,400
Minimum [Member]
Lessee, Operating Lease, Renewal Term	1 year
Maximum [Member]
Lessee, Operating Lease, Renewal Term	20 years

Subsequent Events (Details)

Subsequent Events (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Subsequent Event [Line Items]
Gain (Loss) on Sales of Loans, Net	$ 229,000	$ 4,900,000	$ 550,000	$ 17,200,000