United Community Banks (UCB) 10-Q 7 Nov 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Oct. 31, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	001-35095
Entity Registrant Name	UNITED COMMUNITY BANKS, INC.
Entity Central Index Key	0000857855
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Incorporation, State or Country Code	GA
Entity Tax Identification Number	58-1807304
Entity Address, Address Line One	125 Highway 515 East
Entity Address, City or Town	Blairsville
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30512
City Area Code	706
Local Phone Number	781-2265
Title of 12(b) Security	Common stock, par value $1 per share
Trading Symbol	UCBI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		78,981,929

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 108,389	$ 126,083
Interest-bearing deposits in banks (includes restricted cash of $5,326 and $6,702)	252,670	201,182
Cash and cash equivalents	361,059	327,265
Debt securities available for sale	2,272,046	2,628,467
Debt securities held to maturity (fair value $248,546 and $268,803)	243,028	274,407
Loans held for sale at fair value	54,625	18,935
Loans and leases, net of unearned income	8,903,266	8,383,401
Less allowance for loan and lease losses	(62,514)	(61,203)
Loans and leases, net	8,840,752	8,322,198
Premises and equipment, net	215,435	206,140
Bank owned life insurance	201,955	192,616
Accrued interest receivable	33,233	35,413
Net deferred tax asset	34,591	64,224
Derivative financial instruments	43,755	24,705
Goodwill and other intangible assets	343,340	324,072
Other assets	165,667	154,750
Total assets	12,809,486	12,573,192
Deposits:
Noninterest-bearing demand	3,527,815	3,210,220
Interest-bearing deposits	7,228,702	7,324,293
Total deposits	10,756,517	10,534,513
Federal Home Loan Bank advances	40,000	160,000
Long-term debt	240,245	267,189
Derivative financial instruments	16,244	26,433
Accrued expenses and other liabilities	151,055	127,503
Total liabilities	11,204,061	11,115,638
Shareholders' equity:
Common stock, $1 par value; 150,000,000 shares authorized; 78,974,199 and 79,234,077 shares issued and outstanding	78,974	79,234
Common stock issuable; 660,581 and 674,499 shares	11,327	10,744
Capital surplus	1,495,267	1,499,584
Retained earnings (accumulated deficit)	5,594	(90,419)
Accumulated other comprehensive income (loss)	14,263	(41,589)
Total shareholders' equity	1,605,425	1,457,554
Total liabilities and shareholders' equity	$ 12,809,486	$ 12,573,192

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Restricted cash	$ 5,326	$ 6,702
Debt securities held to maturity, fair value	$ 248,546	$ 268,803
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock authorized (in shares)	150,000,000	150,000,000
Common stock issued (in shares)	78,974,199	79,234,077
Common stock outstanding (in shares)	78,974,199	79,234,077
Common stock issuable (in shares)	660,581	674,499

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest revenue:
Loans, including fees	$ 122,645	$ 108,335	$ 357,575	$ 308,296
Investment securities, including tax exempt of $1,118 and $1,052, and $3,409 and $3,049	17,744	19,899	57,638	56,448
Deposits in banks and short-term investments	226	487	1,074	1,482
Total interest revenue	140,615	128,721	416,287	366,226
Interest expense:
Deposits	17,113	10,941	50,185	25,353
Short-term borrowings	429	274	838	772
Federal Home Loan Bank advances	521	1,791	2,695	5,551
Long-term debt	3,214	3,605	9,813	10,679
Total interest expense	21,277	16,611	63,531	42,355
Net interest revenue	119,338	112,110	352,756	323,871
Provision for credit losses	3,100	1,800	9,650	7,400
Net interest revenue after provision for credit losses	116,238	110,310	343,106	316,471
Noninterest income:
Brokerage fees	1,699	1,525	4,624	3,598
Securities gains (losses), net	0	2	(118)	(1,302)
Other	7,119	5,674	20,433	18,077
Total noninterest income	29,031	24,180	74,530	69,916
Total revenue	145,269	134,490	417,636	386,387
Noninterest expenses:
Salaries and employee benefits	50,501	47,146	146,161	135,384
Communications and equipment	6,223	5,590	18,233	15,071
Occupancy	5,921	5,779	17,424	16,939
Advertising and public relations	1,374	1,442	4,256	4,341
Postage, printing and supplies	1,618	1,574	4,733	4,896
Professional fees	4,715	3,927	11,930	11,435
FDIC assessments and other regulatory charges	314	2,228	3,571	6,677
Amortization of intangibles	1,210	1,681	3,845	5,426
Merger-related and other charges	2,541	115	6,981	4,449
Other	8,507	8,236	23,687	23,425
Total noninterest expenses	82,924	77,718	240,821	228,043
Net income before income taxes	62,345	56,772	176,815	158,344
Income tax expense	13,983	13,090	40,106	37,370
Net income	48,362	43,682	136,709	120,974
Net income available to common shareholders	$ 48,011	$ 43,381	$ 135,727	$ 120,124
Net income per common share:
Basic (in dollars per share)	$ 0.60	$ 0.54	$ 1.70	$ 1.51
Diluted (in dollars per share)	$ 0.60	$ 0.54	$ 1.70	$ 1.51
Weighted average common shares outstanding:
Basic (in shares)	79,663	79,806	79,714	79,588
Diluted (in shares)	79,667	79,818	79,718	79,598
Service charges and fees
Noninterest income:
Service charges and other related fees	$ 9,916	$ 9,112	$ 27,429	$ 26,831
Mortgage loan and other related fees
Noninterest income:
Service charges and other related fees	8,658	5,262	17,750	15,928
SBA/USDA loans
Noninterest income:
Gains from sales of SBA/USDA loans	$ 1,639	$ 2,605	$ 4,412	$ 6,784

Consolidated Statements of In_2

Consolidated Statements of Income (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Investment securities, tax exempt	$ 1,118	$ 1,052	$ 3,409	$ 3,049

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income, Before-tax Amount	$ 62,345	$ 56,772	$ 176,815	$ 158,344
Net income, Tax (Expense) Benefit	(13,983)	(13,090)	(40,106)	(37,370)
Net income	48,362	43,682	136,709	120,974
Unrealized gains (losses) on available-for-sale securities:
Unrealized holding gains (losses) arising during period, Before-tax Amount	8,014	(14,022)	70,944	(52,860)
Unrealized holding gains (losses) arising during period, Tax (Expense) Benefit	(1,897)	3,397	(17,194)	12,861
Unrealized holding gains (losses) arising during period, Net of Tax Amount	6,117	(10,625)	53,750	(39,999)
Reclassification adjustment for (gains) losses included in net income, Before-tax Amount	0	(2)	118	1,302
Reclassification adjustment for (gains) losses included in net income, Tax (Expense) Benefit	0	5	(30)	(312)
Reclassification adjustment for (gains) losses included in net income, Net of Tax Amount	0	3	88	990
Net unrealized gains (losses), Before-tax Amount	8,014	(14,024)	71,062	(51,558)
Net unrealized gains (losses), Tax (Expense) Benefit	(1,897)	3,402	(17,224)	12,549
Net unrealized gains (losses), Net of Tax Amount	6,117	(10,622)	53,838	(39,009)
Amortization of losses included in net income on available-for-sale securities transferred to held-to-maturity, Before-tax Amount	105	168	282	607
Amortization of losses included in net income on available-for-sale securities transferred to held-to-maturity, Tax (Expense) Benefit	(25)	(40)	(67)	(149)
Amortization of losses included in net income on available-for-sale securities transferred to held-to-maturity, Net of Tax Amount	80	128	215	458
Amortization of losses included in net income on terminated derivative financial instruments that were previously accounted for as cash flow hedges, Before-tax Amount	0	105	337	395
Amortization of losses included in net income on terminated derivative financial instruments that were previously accounted for as cash flow hedges, Tax (Expense) Benefit	0	(27)	(86)	(103)
Amortization of losses included in net income on terminated derivative financial instruments that were previously accounted for as cash flow hedges, After-tax Amount	0	78	251	292
Defined benefit pension plan activity:
Termination of defined benefit pension plan, Before-tax Amount	1,558		1,558
Termination of defined benefit pension plan, Tax (Expense) Benefit	(398)		(398)
Termination of defined benefit pension plan, Net of Tax Amount	1,160		1,160
Net actuarial loss on defined benefit pension plan, Before-tax Amount		0		(5)
Net actuarial loss on defined benefit pension plan, Tax (Expense) Benefit		0		1
Net actuarial loss on defined benefit pension plan, Net of Tax Amount		0		(4)
Amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, Before-tax Amount	174	227	521	681
Amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, Tax (Expense) Benefit	(45)	(57)	(133)	(188)
Amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, Net of Tax Amount	129	170	388	493
Net defined benefit pension plan activity, Before-tax Amount	1,732	227	2,079	676
Net defined benefit pension plan activity, Tax (Expense) Benefit	(443)	(57)	(531)	(187)
Net defined benefit pension plan activity, Net of Tax Amount	1,289	170	1,548	489
Total other comprehensive income (loss), Before-tax Amount	9,851	(13,524)	73,760	(49,880)
Total other comprehensive income (loss), Tax (Expense) Benefit	(2,365)	3,278	(17,908)	12,110
Total other comprehensive income (loss), net of tax amount	7,486	(10,246)	55,852	(37,770)
Comprehensive income, Before-tax Amount	72,196	43,248	250,575	108,464
Comprehensive income, Tax (Expense) Benefit	(16,348)	(9,812)	(58,014)	(25,260)
Comprehensive income, Net of Tax Amount	$ 55,848	$ 33,436	$ 192,561	$ 83,204

Consolidated Statement of Chang

Consolidated Statement of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Common Stock Issuable	Capital Surplus	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2017	$ 1,303,334	$ 77,580	$ 9,083	$ 1,451,814	$ (209,902)	$ (25,241)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	120,974				120,974
Other comprehensive income (loss)	(37,770)					(37,770)
Exercise of stock options	142	12		130
Common stock issued to dividend reinvestment plan and employee benefit plans	504	18		486
Common stock issued for acquisition	45,746	1,444		44,302
Amortization of stock options and or restricted stock awards	4,075			4,075
Vesting of restricted stock, net of shares surrendered to cover payroll taxes	(1,706)	100	1,473	(3,279)
Deferred compensation plan, net, including dividend equivalents	344		344
Shares issued from deferred compensation plan, net of shares surrendered to cover payroll taxes	(10)	48	(729)	671
Common stock dividends	(33,751)				(33,751)
Ending balance at Sep. 30, 2018	1,401,882	79,202	10,171	1,498,199	(122,679)	(63,011)
Beginning balance at Jun. 30, 2018	1,379,109	79,138	9,509	1,497,517	(154,290)	(52,765)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	43,682				43,682
Other comprehensive income (loss)	(10,246)					(10,246)
Exercise of stock options	0
Common stock issued to dividend reinvestment plan and employee benefit plans	219	8		211
Common stock issued for acquisition	0
Amortization of stock options and or restricted stock awards	1,799			1,799
Vesting of restricted stock, net of shares surrendered to cover payroll taxes	(720)	54	589	(1,363)
Deferred compensation plan, net, including dividend equivalents	110		110
Shares issued from deferred compensation plan, net of shares surrendered to cover payroll taxes	0	2	(37)	35
Common stock dividends	(12,071)				(12,071)
Ending balance at Sep. 30, 2018	1,401,882	79,202	10,171	1,498,199	(122,679)	(63,011)
Beginning balance at Dec. 31, 2018	1,457,554	79,234	10,744	1,499,584	(90,419)	(41,589)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	136,709				136,709
Other comprehensive income (loss)	55,852					55,852
Exercise of stock options	197	12		185
Common stock issued to dividend reinvestment plan and employee benefit plans	2,004	76		1,928
Amortization of stock options and or restricted stock awards	7,680			7,680
Vesting of restricted stock, net of shares surrendered to cover payroll taxes	(1,022)	81	1,365	(2,468)
Purchases of common stock	(13,020)	(500)		(12,520)
Deferred compensation plan, net, including dividend equivalents	406		406
Shares issued from deferred compensation plan, net of shares surrendered to cover payroll taxes	(239)	71	(1,188)	878
Common stock dividends	(40,147)				(40,147)
Ending balance at Sep. 30, 2019	1,605,425	78,974	11,327	1,495,267	5,594	14,263
Beginning balance at Jun. 30, 2019	1,566,334	79,075	10,858	1,498,740	(29,116)	6,777
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	48,362				48,362
Other comprehensive income (loss)	7,486					7,486
Exercise of stock options	0
Common stock issued to dividend reinvestment plan and employee benefit plans	913	34		879
Amortization of stock options and or restricted stock awards	1,678			1,678
Vesting of restricted stock, net of shares surrendered to cover payroll taxes	(630)	60	356	(1,046)
Purchases of common stock	(5,180)	(195)		(4,985)
Deferred compensation plan, net, including dividend equivalents	114		114
Shares issued from deferred compensation plan, net of shares surrendered to cover payroll taxes	0	0	(1)	1
Common stock dividends	(13,652)				(13,652)
Ending balance at Sep. 30, 2019	$ 1,605,425	$ 78,974	$ 11,327	$ 1,495,267	$ 5,594	$ 14,263

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Shareholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Exercises of stock options (in shares)			12,000	12,000
Common stock issued to dividend reinvestment plan and employee benefits plans (in shares)	34,190	7,903	76,613	17,756
Common stock issued for acquisition (in shares)				1,443,987
Vesting of restricted stock, net of shares surrendered to cover payroll taxes, shares issued (in shares)	60,199	54,551	81,178	100,960
Vesting of restricted stock, net of shares surrendered to cover payroll taxes, shares deferred (in shares)	14,919	32,437	51,580	79,856
Purchases of common stock (in shares)	195,443		500,495
Shares issued from deferred compensation plan, net of shares surrendered to cover payroll taxes (in shares)	34	2,215	70,826	48,215
Common stock dividends (in dollars per share)	$ 0.17	$ 0.15	$ 0.50	$ 0.42

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating activities:
Net income	$ 136,709	$ 120,974
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	18,009	24,486
Provision for credit losses	9,650	7,400
Stock based compensation	7,680	4,075
Deferred income tax expense	12,149	36,335
Securities losses, net	118	1,302
Gains from sales of other loans	(4,783)	(6,784)
Net (gains) losses on sales and write downs of other real estate owned	(307)	316
Changes in assets and liabilities:
Other assets and accrued interest receivable	(47,236)	(13,515)
Accrued expenses and other liabilities	(188)	17,593
Loans held for sale	(35,690)	8,001
Net cash provided by operating activities	96,111	200,183
Debt securities held to maturity:
Proceeds from maturities and calls of securities held to maturity	39,787	47,325
Purchases of securities held to maturity	(8,499)	(11,983)
Debt securities available for sale and equity securities:
Proceeds from sales of securities available for sale	225,883	156,679
Proceeds from maturities and calls of securities available for sale	238,514	249,750
Purchases of securities available for sale and equity securities	(45,629)	(425,093)
Net increase in loans	(296,076)	(123,438)
Proceeds from sales of premises and equipment	5,870	4,126
Purchases of premises and equipment	(16,532)	(14,449)
Net cash paid for acquisition	(19,545)	(56,800)
Proceeds from sale of other real estate	2,344	3,645
Net cash provided by (used in) investing activities	126,117	(170,238)
Financing activities:
Net increase in deposits	10,538	422,622
Net decrease in short-term borrowings	0	(264,923)
Repayment of long-term debt	(27,500)	(53,503)
Proceeds from FHLB advances	1,625,000	2,240,000
Repayment of FHLB advances	(1,745,000)	(2,444,003)
Proceeds from issuance of subordinated debt, net of issuance costs	0	98,188
Proceeds from issuance of common stock for dividend reinvestment and employee benefit plans	2,004	504
Proceeds from exercise of stock options	197	142
Cash paid for shares withheld to cover payroll taxes upon vesting of restricted stock	(1,261)	(1,716)
Repurchase of common stock	(13,020)	0
Cash dividends on common stock	(39,392)	(29,563)
Net cash (used in) provided by financing activities	(188,434)	(32,252)
Net change in cash and cash equivalents, including restricted cash	33,794	(2,307)
Cash and cash equivalents, including restricted cash, at beginning of period	327,265	314,275
Cash and cash equivalents, including restricted cash, at end of period	361,059	311,968
Significant non-cash investing and financing transactions:
Unsettled government guaranteed loan sales	6,850	25,680
Transfers of loans to foreclosed properties	853	2,063
Unsettled securities purchases	0	15,450
Unsettled government guaranteed loan purchases	0	5,214
Acquisitions:
Assets acquired	264,937	480,679
Liabilities assumed	212,844	350,433
Net assets acquired	52,093	130,246
Common stock issued in acquisitions	$ 0	$ 45,746

Accounting Policies

Accounting Policies	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Accounting Policies	Accounting Policies The accounting and financial reporting policies of United Community Banks, Inc. and its subsidiaries (collectively referred to herein as “United”) conform to accounting principles generally accepted in the United States (“GAAP”) and reporting guidelines of banking regulatory authorities and regulators. The accompanying interim consolidated financial statements have not been audited. All material intercompany balances and transactions have been eliminated. A more detailed description of United’s accounting policies is included in its Annual Report on Form 10-K for the year ended December 31, 2018 (the “2018 10-K”). In management’s opinion, all accounting adjustments necessary to accurately reflect the financial position and results of operations on the accompanying financial statements have been made. These adjustments are normal and recurring accruals considered necessary for a fair and accurate presentation. The results for interim periods are not necessarily indicative of results for the full year or any other interim periods. The accompanying unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes appearing in United’s 2018 10-K. Certain amounts reported in prior periods' consolidated financial statements have been reclassified to conform to the current presentation.

Accounting Standards Updates an

Accounting Standards Updates and Recently Adopted Standards	9 Months Ended
	Sep. 30, 2019
Accounting Changes and Error Corrections [Abstract]
Accounting Standards Updates and Recently Adopted Standards	Accounting Standards Updates and Recently Adopted Standards Accounting Standards Updates In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . This guidance was further modified in November 2018 by ASU No. 2018-19, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, in April 2019 by ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825 Financial Instruments and in May 2019 by ASU No. 2019-05, Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief. The new guidance replaces the incurred loss impairment methodology in current GAAP with a current expected credit loss (“CECL”) methodology, requires consideration of a broader range of information to determine credit loss estimates and generally applies to financial assets measured at amortized cost and some off-balance sheet credit exposures. Financial assets measured at amortized cost will be presented at the net amount expected to be collected by using an allowance for credit losses. Purchased credit deteriorated (“PCD”) loans will receive an allowance account at the acquisition date that represents a component of the purchase price allocation. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses, with such allowance limited to the amount by which fair value is below amortized cost. Application of this update will primarily be on a modified retrospective approach, although the guidance for debt securities for which an other-than-temporary impairment has been recognized before the effective date and for loans previously covered by Accounting Standards Codification 310-30 (“ASC 310-30”), Receivables – Loans and Debt Securities Acquired with Deteriorated Credit Quality will be applied on a prospective basis. For public entities, this update is effective for fiscal years beginning after December 15, 2019. Upon adoption, United expects that the allowance for credit losses will be higher given the change to estimated losses for the estimated life of the financial asset; however, management is still in the process of determining the impact. During the third quarter of 2019, management’s CECL steering committee analyzed the results of ongoing parallel runs for both securities held to maturity and loans and continued to monitor the impact of various model assumptions in order to improve the precision of the model. The committee remains focused on developing its CECL policy, procedures, and internal control structure in preparation for adoption of Topic 326. During the remainder of the pre-adoption period, management will run additional parallel runs of the allowance model under the expected credit loss methodology. During monthly steering committee meetings, management regularly reviews project status, gap remediation efforts and project priorities. As referenced above, in April 2019, the FASB issued ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825 Financial Instruments . In addition to amending guidance related to the new CECL standard, this update clarifies certain aspects of hedge accounting and recognition and measurement of financial instruments. The non-CECL provisions of this update are effective for United as of January 1, 2020. United does not expect the new guidance to have a material impact on the consolidated financial statements. Recently Adopted Standards In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) . This guidance was further modified by ASU No. 2018-10, Codification Improvements to Topic 842 Leases , ASU No. 2018-11, Leases (Topic 842): Targeted Improvements , ASU No. 2018-20, Leases (Topic 842): Narrow-Scope Improvements for Lessors and ASU No. 2019-01, Leases (Topic 842): Codification Improvements . These standards require a lessee to recognize in the consolidated balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. United adopted the standard on January 1, 2019 using the optional transition method, which allowed for a modified retrospective method of adoption with a cumulative effect adjustment to shareholders’ equity without restating comparable periods. United also elected the relief package of practical expedients for which there is no requirement to reassess existence of leases, their classification, and initial direct costs as well as an exemption for short-term leases with a term of less than one year, whereby United does not recognize a lease liability or right-of-use asset on the consolidated balance sheet but instead recognizes lease payments as an expense over the lease term as appropriate. The adoption of this guidance resulted in recognition of a right-of-use asset of $23.8 million , a lease liability of $26.8 million and a reduction of shareholders’ equity of $549,000 , net of tax, related to its operating leases. In addition, United has equipment financing leases for which it is the lessor, which were previously accounted for as capital leases. Upon adoption of Topic 842, these leases were classified as sales-type or direct financing leases, which required no significant change in accounting policy or treatment. These lease agreements may include options to renew and for the lessee to purchase the leased equipment at the end of the lease term. As a lessor, United elected to exclude sales taxes from consideration in lease contracts. In the opinion of management, the changes described above resulting from the adoption of the standard did not have a material impact on the consolidated financial statements. See Notes 6 and 16 for additional information on equipment financing leases and operating leases, respectively. In July of 2019, the FASB issued ASU No. 2019-07, Codification updates to SEC sections: amendments to SEC paragraphs pursuant to SEC final rule releases No. 33-10532, disclosure update and simplification, and nos. 33-10231 and 33-10442, investment company reporting modernization, and miscellaneous updates.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Acquisitions	Acquisitions Acquisition of First Madison Bank and Trust On May 1, 2019 , United completed the acquisition of First Madison Bank & Trust (“FMBT”). FMBT operated four banking offices in Athens-Clarke County, Georgia. In connection with the acquisition, United acquired $245 million of assets and assumed $213 million of liabilities. Under the terms of the merger agreement, FMBT shareholders received $52.1 million in cash. The fair value of consideration paid exceeded the fair value of the identifiable assets and liabilities acquired and resulted in the establishment of goodwill in the amount of $20.3 million , representing the intangible value of FMBT’s business and reputation within the markets it served. None of the goodwill is expected to be deductible for income tax purposes. United will amortize the related core deposit intangible of $2.80 million using the sum-of-the-years-digits method over 9.25 years , which represents the expected useful life of the asset. United’s operating results for the three and nine months ended September 30, 2019 include the operating results of the acquired business for the period subsequent to the acquisition date of May 1, 2019 . The purchased assets and assumed liabilities were recorded at their acquisition date fair values and are summarized in the table below (in thousands) . As Recorded by Fair Value Adjustments (1) As Recorded by United Assets Cash and cash equivalents $ 32,548 — $ 32,548 Loans 197,682 (5,188 ) 192,494 Allowance for loan losses (6,338 ) 6,338 — Premises and equipment, net 7,124 1,400 8,524 Bank owned life insurance 6,823 — 6,823 Net deferred tax asset 1,386 (1,229 ) 157 Core deposit intangible — 2,800 2,800 Other assets 1,032 246 1,278 Total assets acquired $ 240,257 $ 4,367 $ 244,624 Liabilities Deposits $ 211,884 $ 243 $ 212,127 Other liabilities 924 (207 ) 717 Total liabilities assumed 212,808 36 212,844 Excess of assets acquired over liabilities assumed $ 27,449 Aggregate fair value adjustments $ 4,331 Total identifiable net assets 31,780 Cash consideration transferred 52,093 Goodwill $ 20,313 (1) Fair values are preliminary and are subject to refinement for a period not to exceed one year after the closing date of an acquisition as information relative to closing date fair values becomes available. The following table presents additional information related to the acquired loan portfolio at the acquisition date (in thousands) : May 1, 2019 Accounted for pursuant to ASC 310-30: Contractually required principal and interest $ 13,145 Non-accretable difference 2,517 Cash flows expected to be collected 10,628 Accretable yield 1,300 Fair value $ 9,328 Excluded from ASC 310-30: Fair value $ 183,166 Gross contractual amounts receivable 218,855 Estimate of contractual cash flows not expected to be collected 8,826 Pro forma information United acquired NLFC Holdings Corp. and its subsidiaries, collectively known as “Navitas,” on February 1, 2018, as described in United’s 2018 10-K. The following table discloses the impact of the acquisitions of FMBT and Navitas since the acquisition dates through September 30 in the year of acquisition . The table also presents certain pro forma information as if FMBT had been acquired on January 1, 2018 and Navitas had been acquired on January 1, 2017. These results combine the historical results of the acquired entities with United’s consolidated statement of income and, while adjustments were made for the estimated impact of certain fair value adjustments and other acquisition-related activity, they are not necessarily indicative of what would have occurred had the acquisitions taken place in earlier years. Merger-related costs from the FMBT acquisition of $756,000 and $1.78 million , respectively, have been excluded from the three and nine months 2019 pro forma information presented below and included in the three and nine months 2018 pro forma information below. Merger-related costs from the Navitas acquisition of $103,000 and $4.93 million , respectively, have been excluded from the three and nine months 2018 pro forma information presented below. The actual results and pro forma information were as follows (in thousands) : Three Months Ended Nine Months Ended Revenue Net Income Revenue Net Income 2019 Actual FMBT results included in statement of income since acquisition date $ 2,697 $ 1,403 $ 5,024 $ 2,590 Supplemental consolidated pro forma as if FMBT had been acquired January 1, 2018 144,881 48,653 420,872 138,157 2018 Actual Navitas results included in statement of income since acquisition date $ 7,006 $ 1,884 $ 17,243 $ 5,380 Supplemental consolidated pro forma as if FMBT had been acquired January 1, 2018 and Navitas had been acquired January 1, 2017 138,036 44,846 399,692 124,599

Balance Sheet Offsetting and Re

Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings	9 Months Ended
	Sep. 30, 2019
Offsetting [Abstract]
Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings	Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings United enters into reverse repurchase agreements in order to invest short-term funds. In addition, United enters into repurchase agreements and reverse repurchase agreements with the same counterparty in transactions commonly referred to as collateral swaps that are subject to master netting agreements under which the balances are netted in the balance sheet in accordance with ASC 210-20, Offsetting. The following table presents a summary of amounts outstanding under reverse repurchase agreements, of which there were none as of September 30, 2019 , and derivative financial instruments including those entered into in connection with the same counterparty under master netting agreements as of the dates indicated (in thousands). Gross Amounts of Recognized Assets Gross Amounts Offset on the Balance Sheet Gross Amounts not Offset in the Balance Sheet September 30, 2019 Net Asset Balance Financial Instruments Collateral Received Net Amount Derivatives $ 43,755 $ — $ 43,755 $ (122 ) $ — $ 43,633 Total $ 43,755 $ — $ 43,755 $ (122 ) $ — $ 43,633 Gross Amounts of Recognized Liabilities Gross Amounts Offset on the Balance Sheet Net Liability Balance Gross Amounts not Offset in the Balance Sheet Financial Instruments Collateral Pledged Net Amount Derivatives $ 16,244 $ — $ 16,244 $ (122 ) $ (16,316 ) $ — Total $ 16,244 $ — $ 16,244 $ (122 ) $ (16,316 ) $ — Gross Amounts of Recognized Assets Gross Amounts Offset on the Balance Sheet Gross Amounts not Offset in the Balance Sheet December 31, 2018 Net Asset Balance Financial Instruments Collateral Received Net Amount Repurchase agreements / reverse repurchase agreements $ 50,000 $ (50,000 ) $ — $ — $ — $ — Derivatives 24,705 — 24,705 (973 ) (8,029 ) 15,703 Total $ 74,705 $ (50,000 ) $ 24,705 $ (973 ) $ (8,029 ) $ 15,703 Weighted average interest rate of reverse repurchase agreements 3.20 % Gross Amounts of Recognized Liabilities Gross Amounts Offset on the Balance Sheet Gross Amounts not Offset in the Balance Sheet Net Liability Balance Financial Instruments Collateral Pledged Net Amount Repurchase agreements / reverse repurchase agreements $ 50,000 $ (50,000 ) $ — $ — $ — $ — Derivatives 26,433 — 26,433 (973 ) (16,126 ) 9,334 Total $ 76,433 $ (50,000 ) $ 26,433 $ (973 ) $ (16,126 ) $ 9,334 Weighted average interest rate of repurchase agreements 2.45 % At September 30, 2019 , United recognized the right to reclaim cash collateral of $16.3 million . At September 30, 2019 there was no cash collateral held for derivatives. At December 31, 2018 , United recognized the right to reclaim cash collateral of $16.1 million and the obligation to return cash collateral of $8.03 million . The right to reclaim cash collateral and the obligation to return cash collateral were included in the consolidated balance sheets in other assets and other liabilities, respectively. Derivatives include customer derivatives, which as discussed further in Note 9, are cross-collateralized with the collateral used to support the credit risk for the underlying lending relationship. Such collateral is not included in the tables above. The following table presents additional detail regarding repurchase agreements accounted for as secured borrowings and the securities underlying these agreements as of December 31, 2018 (in thousands) . Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30 to 90 Days 91 to 110 days Total Mortgage-backed securities $ — $ — $ 50,000 $ — $ 50,000 Total $ — $ — $ 50,000 $ — $ 50,000 Gross amount of recognized liabilities for repurchase agreements in offsetting disclosure $ 50,000 Amounts related to agreements not included in offsetting disclosure $ — United is obligated to promptly transfer additional securities if the market value of the securities falls below the repurchase agreement price. United manages this risk by maintaining an unpledged securities portfolio that it believes is sufficient to cover a decline in the market value of the securities sold under agreements to repurchase.

Securities

Securities	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The amortized cost basis, unrealized gains and losses and fair value of debt securities held-to-maturity as of the dates indicated are as follows (in thousands) . Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value As of September 30, 2019 State and political subdivisions $ 61,251 $ 3,308 $ — $ 64,559 Residential mortgage-backed securities 163,603 2,532 597 165,538 Commercial mortgage-backed securities 18,174 331 56 18,449 Total $ 243,028 $ 6,171 $ 653 $ 248,546 As of December 31, 2018 State and political subdivisions $ 68,551 $ 952 $ 2,191 $ 67,312 Residential mortgage-backed securities 176,488 652 5,094 172,046 Commercial mortgage-backed securities 29,368 173 96 29,445 Total $ 274,407 $ 1,777 $ 7,381 $ 268,803 The cost basis, unrealized gains and losses, and fair value of debt securities available-for-sale as of the dates indicated are presented below (in thousands) . Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value As of September 30, 2019 U.S. Treasuries $ 152,759 $ 1,873 $ — $ 154,632 U.S. Government agencies 2,972 203 — 3,175 State and political subdivisions 215,159 12,166 — 227,325 Residential mortgage-backed securities 1,236,101 22,154 1,622 1,256,633 Commercial mortgage-backed securities 318,815 3,783 133 322,465 Corporate bonds 200,246 1,291 342 201,195 Asset-backed securities 106,729 762 870 106,621 Total $ 2,232,781 $ 42,232 $ 2,967 $ 2,272,046 As of December 31, 2018 U.S. Treasuries $ 150,712 $ 767 $ 2,172 $ 149,307 U.S. Government agencies 25,493 335 275 25,553 State and political subdivisions 234,750 907 1,716 233,941 Residential mortgage-backed securities 1,464,380 3,428 21,898 1,445,910 Commercial mortgage-backed securities 399,663 187 7,933 391,917 Corporate bonds 200,582 502 1,921 199,163 Asset-backed securities 184,683 328 2,335 182,676 Total $ 2,660,263 $ 6,454 $ 38,250 $ 2,628,467 Securities with a carrying value of $724 million and $925 million were pledged to secure public deposits, derivatives and other secured borrowings at September 30, 2019 and December 31, 2018 , respectively. The following table summarizes debt securities held-to-maturity in an unrealized loss position as of the dates indicated ( in thousands) . Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss As of September 30, 2019 Residential mortgage-backed securities $ 2,597 $ 12 $ 55,776 $ 585 $ 58,373 $ 597 Commercial mortgage-backed securities — — 1,900 56 1,900 56 Total unrealized loss position $ 2,597 $ 12 $ 57,676 $ 641 $ 60,273 $ 653 As of December 31, 2018 State and political subdivisions $ 7,062 $ 46 $ 34,146 $ 2,145 $ 41,208 $ 2,191 Residential mortgage-backed securities 6,579 61 136,376 5,033 142,955 5,094 Commercial mortgage-backed securities — — 4,290 96 4,290 96 Total unrealized loss position $ 13,641 $ 107 $ 174,812 $ 7,274 $ 188,453 $ 7,381 The following table summarizes debt securities available-for-sale in an unrealized loss position as of the dates indicated (in thousands) . Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss As of September 30, 2019 Residential mortgage-backed securities $ 72,466 $ 603 $ 111,223 $ 1,019 $ 183,689 $ 1,622 Commercial mortgage-backed securities — — 37,111 133 37,111 133 Corporate bonds 19,820 114 15,772 228 35,592 342 Asset-backed securities 64,608 867 1,233 3 65,841 870 Total unrealized loss position $ 156,894 $ 1,584 $ 165,339 $ 1,383 $ 322,233 $ 2,967 As of December 31, 2018 U.S. Treasuries $ — $ — $ 120,391 $ 2,172 $ 120,391 $ 2,172 U.S. Government agencies — — 21,519 275 21,519 275 State and political subdivisions 15,160 28 133,500 1,688 148,660 1,716 Residential mortgage-backed securities 234,583 808 775,360 21,090 1,009,943 21,898 Commercial mortgage-backed securities 4,552 594 355,292 7,339 359,844 7,933 Corporate bonds — — 117,296 1,921 117,296 1,921 Asset-backed securities 74,492 1,879 31,968 456 106,460 2,335 Total unrealized loss position $ 328,787 $ 3,309 $ 1,555,326 $ 34,941 $ 1,884,113 $ 38,250 At September 30, 2019 , there were 49 debt securities available-for-sale and 29 debt securities held-to-maturity that were in an unrealized loss position. United does not intend to sell nor believes it will be required to sell securities in an unrealized loss position prior to the recovery of their amortized cost basis. Unrealized losses at September 30, 2019 were primarily attributable to changes in interest rates. Management evaluates securities for other-than-temporary impairment on a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. Consideration is given to the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer, among other factors. In analyzing an issuer’s financial condition, management considers whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and industry analysts’ reports. No impairment charges were recognized during the three and nine months ended September 30, 2019 or 2018 . Realized gains and losses are derived using the specific identification method for determining the cost of securities sold. The following table summarizes available-for-sale securities sales activity for the three and nine months ended September 30, 2019 and 2018 (in thousands) . Three Months Ended Nine Months Ended 2019 2018 2019 2018 Proceeds from sales $ — $ 16,383 $ 225,883 $ 156,679 Gross gains on sales $ — $ 176 $ 1,776 $ 825 Gross losses on sales — (174 ) (1,894 ) (2,127 ) Net gains (losses) on sales of securities $ — $ 2 $ (118 ) $ (1,302 ) Income tax expense (benefit) attributable to sales $ — $ 5 $ (30 ) $ (312 ) The amortized cost and fair value of debt securities available-for-sale and held-to-maturity at September 30, 2019 , by contractual maturity, are presented in the following table (in thousands) . Available-for-Sale Held-to-Maturity Amortized Cost Fair Value Amortized Cost Fair Value U.S. Treasuries: Within 1 year $ 29,786 $ 29,887 $ — $ — 1 to 5 years 122,973 124,745 — — 152,759 154,632 — — U.S. Government agencies: 1 to 5 years 406 406 — — More than 10 years 2,566 2,769 — — 2,972 3,175 — — State and political subdivisions: Within 1 year 935 943 1,350 1,376 1 to 5 years 54,107 55,437 10,764 11,322 5 to 10 years 16,339 17,222 7,202 8,047 More than 10 years 143,778 153,723 41,935 43,814 215,159 227,325 61,251 64,559 Corporate bonds: Within 1 year 120,046 120,176 — — 1 to 5 years 77,700 78,475 — — 5 to 10 years 1,500 1,546 — — More than 10 years 1,000 998 — — 200,246 201,195 — — Asset-backed securities: 1 to 5 years 1,754 1,746 — — More than 10 years 104,975 104,875 — — 106,729 106,621 — — Total securities other than mortgage-backed securities: Within 1 year 150,767 151,006 1,350 1,376 1 to 5 years 256,940 260,809 10,764 11,322 5 to 10 years 17,839 18,768 7,202 8,047 More than 10 years 252,319 262,365 41,935 43,814 Residential mortgage-backed securities 1,236,101 1,256,633 163,603 165,538 Commercial mortgage-backed securities 318,815 322,465 18,174 18,449 $ 2,232,781 $ 2,272,046 $ 243,028 $ 248,546 Expected maturities may differ from contractual maturities because issuers and borrowers may have the right to call or prepay obligations.

Loans and Leases and Allowance

Loans and Leases and Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Loans and Leases and Allowance for Credit Losses	Loans and Leases and Allowance for Credit Losses Major classifications of the loan and lease portfolio (collectively referred to as the “loan portfolio” or “loans”) are summarized as of the dates indicated as follows (in thousands) . September 30, 2019 December 31, 2018 Owner occupied commercial real estate $ 1,692,010 $ 1,647,904 Income producing commercial real estate 1,933,868 1,812,420 Commercial & industrial 1,271,243 1,278,347 Commercial construction 1,000,801 796,158 Equipment financing 729,506 564,614 Total commercial 6,627,428 6,099,443 Residential mortgage 1,120,828 1,049,232 Home equity lines of credit 668,987 694,010 Residential construction 229,352 211,011 Consumer direct 125,517 122,013 Indirect auto 131,154 207,692 Total loans 8,903,266 8,383,401 Less allowance for loan losses (62,514 ) (61,203 ) Loans, net $ 8,840,752 $ 8,322,198 At September 30, 2019 and December 31, 2018 , loans totaling $4.15 billion and $3.98 billion , respectively, were pledged as collateral to secure Federal Home Loan Bank advances, securitized notes payable and other contingent funding sources. At September 30, 2019 , the carrying value and outstanding balance of purchased credit impaired (“PCI”) loans accounted for under ASC 310-30 were $69.7 million and $97.1 million , respectively. At December 31, 2018 , the carrying value and outstanding balance of PCI loans were $74.4 million and $109 million , respectively. The following table presents changes in the balance of the accretable yield for PCI loans for the periods indicated (in thousands) : Three Months Ended Nine Months Ended 2019 2018 2019 2018 Balance at beginning of period $ 26,308 $ 23,406 $ 26,868 $ 17,686 Additions due to acquisitions — — 1,300 1,977 Accretion (4,950 ) (3,773 ) (14,037 ) (9,284 ) Reclassification from nonaccretable difference 1,159 3,018 5,627 10,136 Changes in expected cash flows that do not affect nonaccretable difference 329 2,027 3,088 4,163 Balance at end of period $ 22,846 $ 24,678 $ 22,846 $ 24,678 In addition to the accretable yield on PCI loans, the fair value adjustments on purchased loans outside the scope of ASC 310-30 are also accreted to interest revenue over the life of the loans. At September 30, 2019 and December 31, 2018 , the remaining accretable net fair value discount on loans acquired through a business combination and not accounted for under ASC 310-30 was $5.69 million and $4.31 million , respectively, which included a net premium on acquired equipment financing loans. In addition, indirect auto loans purchased at a premium outside of a business combination had a remaining premium of $1.91 million and $3.72 million , respectively, as of September 30, 2019 and December 31, 2018 . At September 30, 2019 and December 31, 2018 , equipment financing assets included leases of $39.5 million and $30.4 million , respectively. The components of the net investment in leases, which included both sales-type and direct financing, are presented below (in thousands) . September 30, 2019 December 31, 2018 Minimum future lease payments receivable $ 42,176 $ 31,915 Estimated residual value of leased equipment 3,749 3,593 Initial direct costs 936 827 Security deposits (1,091 ) (1,189 ) Purchase accounting premium 379 806 Unearned income (6,630 ) (5,568 ) Net investment in leases $ 39,519 $ 30,384 Minimum future lease payments expected to be received from equipment financing lease contracts as of September 30, 2019 are as follows (in thousands) : Year Remainder of 2019 $ 4,048 2020 14,455 2021 10,740 2022 7,131 2023 4,226 Thereafter 1,576 Total $ 42,176 Allowance for Credit Losses and Loans Individually Evaluated for Impairment The allowance for loan losses represents management’s estimate of probable incurred losses in the loan portfolio as of the end of the period. The allowance for unfunded commitments is included in other liabilities in the consolidated balance sheet. Combined, the allowance for loan losses and allowance for unfunded commitments are referred to as the allowance for credit losses. The following table presents the balance and activity in the allowance for credit losses by portfolio segment for the periods indicated (in thousands) . 2019 2018 Three Months Ended September 30, Beginning Balance Charge-Offs Recoveries (Release)Provision Ending Balance Beginning Balance Charge-Offs Recoveries (Release) Provision Ending Balance Owner occupied commercial real estate $ 11,545 $ — $ 39 $ (165 ) $ 11,419 $ 12,909 $ — $ 251 $ (706 ) $ 12,454 Income producing commercial real estate 11,020 (472 ) 41 473 11,062 10,862 (375 ) 375 220 11,082 Commercial & industrial 5,308 (898 ) 207 773 5,390 4,205 (660 ) 242 568 4,355 Commercial construction 10,318 — 247 (158 ) 10,407 10,123 (24 ) 66 (293 ) 9,872 Equipment financing 6,935 (1,376 ) 202 1,485 7,246 3,561 (700 ) 218 1,141 4,220 Residential mortgage 8,290 (264 ) 106 82 8,214 9,845 (235 ) 66 70 9,746 Home equity lines of credit 4,794 (287 ) 204 (28 ) 4,683 4,943 (426 ) 147 174 4,838 Residential construction 2,365 (13 ) 18 181 2,551 2,590 (32 ) 195 (382 ) 2,371 Consumer direct 855 (645 ) 226 441 877 765 (643 ) 244 474 840 Indirect auto 774 (125 ) 67 (51 ) 665 1,268 (228 ) 53 69 1,162 Total allowance for loan losses 62,204 (4,080 ) 1,357 3,033 62,514 61,071 (3,323 ) 1,857 1,335 60,940 Allowance for unfunded commitments 3,391 — — 67 3,458 2,895 — — 465 3,360 Total allowance for credit losses $ 65,595 $ (4,080 ) $ 1,357 $ 3,100 $ 65,972 $ 63,966 $ (3,323 ) $ 1,857 $ 1,800 $ 64,300 2019 2018 Nine Months Ended September 30, Beginning Balance Charge-Offs Recoveries (Release) Provision Ending Balance Beginning Charge- Recoveries (Release) Ending Owner occupied commercial real estate $ 12,207 $ (5 ) $ 166 $ (949 ) $ 11,419 $ 14,776 $ (67 ) $ 939 $ (3,194 ) $ 12,454 Income producing commercial real estate 11,073 (977 ) 127 839 11,062 9,381 (2,685 ) 842 3,544 11,082 Commercial & industrial 4,802 (3,833 ) 645 3,776 5,390 3,971 (1,277 ) 848 813 4,355 Commercial construction 10,337 (70 ) 804 (664 ) 10,407 10,523 (440 ) 322 (533 ) 9,872 Equipment financing 5,452 (3,810 ) 466 5,138 7,246 — (862 ) 386 4,696 4,220 Residential mortgage 8,295 (433 ) 388 (36 ) 8,214 10,097 (417 ) 290 (224 ) 9,746 Home equity lines of credit 4,752 (653 ) 466 118 4,683 5,177 (761 ) 372 50 4,838 Residential construction 2,433 (263 ) 91 290 2,551 2,729 (40 ) 326 (644 ) 2,371 Consumer direct 853 (1,721 ) 672 1,073 877 710 (1,846 ) 599 1,377 840 Indirect auto 999 (502 ) 151 17 665 1,550 (1,043 ) 188 467 1,162 Total allowance for loan losses 61,203 (12,267 ) 3,976 9,602 62,514 58,914 (9,438 ) 5,112 6,352 60,940 Allowance for unfunded commitments 3,410 — — 48 3,458 2,312 — — 1,048 3,360 Total allowance for credit losses $ 64,613 $ (12,267 ) $ 3,976 $ 9,650 $ 65,972 $ 61,226 $ (9,438 ) $ 5,112 $ 7,400 $ 64,300 The following tables represent the recorded investment in loans by portfolio segment and the balance of the allowance for loan losses assigned to each segment based on the method of evaluating the loans for impairment as of the dates indicated (in thousands) . Allowance for Credit Losses September 30, 2019 December 31, 2018 Individually Collectively evaluated for impairment PCI Ending Balance Individually Collectively evaluated for impairment PCI Ending Balance Owner occupied commercial real estate $ 859 $ 10,446 $ 114 $ 11,419 $ 862 $ 11,328 $ 17 $ 12,207 Income producing commercial real estate 261 10,737 64 11,062 402 10,671 — 11,073 Commercial & industrial 33 5,305 52 5,390 32 4,761 9 4,802 Commercial construction 49 10,248 110 10,407 71 9,974 292 10,337 Equipment financing — 7,149 97 7,246 — 5,045 407 5,452 Residential mortgage 808 7,392 14 8,214 861 7,410 24 8,295 Home equity lines of credit 16 4,648 19 4,683 1 4,740 11 4,752 Residential construction 51 2,472 28 2,551 51 2,382 — 2,433 Consumer direct 5 872 — 877 6 847 — 853 Indirect auto 41 624 — 665 26 973 — 999 Total allowance for loan losses 2,123 59,893 498 62,514 2,312 58,131 760 61,203 Allowance for unfunded commitments — 3,458 — 3,458 — 3,410 — 3,410 Total allowance for credit losses $ 2,123 $ 63,351 $ 498 $ 65,972 $ 2,312 $ 61,541 $ 760 $ 64,613 Loans Outstanding September 30, 2019 December 31, 2018 Individually Collectively evaluated for impairment PCI Ending Balance Individually evaluated for impairment Collectively evaluated for impairment PCI Ending Balance Owner occupied commercial real estate $ 18,562 $ 1,663,913 $ 9,535 $ 1,692,010 $ 17,602 $ 1,620,450 $ 9,852 $ 1,647,904 Income producing commercial real estate 10,748 1,886,317 36,803 1,933,868 16,584 1,757,525 38,311 1,812,420 Commercial & industrial 2,068 1,268,815 360 1,271,243 1,621 1,276,318 408 1,278,347 Commercial construction 3,287 990,513 7,001 1,000,801 2,491 787,760 5,907 796,158 Equipment financing 111 724,664 4,731 729,506 — 556,672 7,942 564,614 Residential mortgage 16,672 1,095,179 8,977 1,120,828 14,220 1,025,862 9,150 1,049,232 Home equity lines of credit 300 667,286 1,401 668,987 276 692,122 1,612 694,010 Residential construction 1,283 227,564 505 229,352 1,207 209,070 734 211,011 Consumer direct 198 124,939 380 125,517 211 121,269 533 122,013 Indirect auto 1,043 130,111 — 131,154 1,237 206,455 — 207,692 Total loans $ 54,272 $ 8,779,301 $ 69,693 $ 8,903,266 $ 55,449 $ 8,253,503 $ 74,449 $ 8,383,401 A loan is considered impaired when, based on current events and circumstances, it is probable that all amounts due according to the original contractual terms of the loan will not be collected. On a quarterly basis, management individually evaluates certain impaired loans, including all non-PCI nonaccrual relationships with a balance of $500,000 or greater and all troubled debt restructurings (“TDRs”) for impairment. Impairment for collateral dependent loans within this population is measured based on the fair value of the collateral. If impairment is identified, the loan is generally charged down to the fair value of the underlying collateral, less selling costs. Impairment for non-collateral dependent TDRs within this population is measured based on discounted cash flows or the loan’s observable market price. Impairment identified using these methods would result in the establishment of a specific reserve. Each quarter, management prepares an analysis of the allowance for credit losses to determine the appropriate balance that measures and quantifies the amount of probable incurred losses in the loan portfolio and unfunded loan commitments. The allowance is comprised of specific reserves on individually impaired loans, which are determined as described above, and general reserves which are determined based on historical loss experience as adjusted for current trends and economic conditions multiplied by a loss emergence period factor. Management calculates the loss emergence period for each pool in the loan portfolio based on the weighted average length of time between the date a loan first exceeds 30 days past due and the date the loan is charged off. On junior lien home equity loans, management has limited ability to monitor the delinquency status of the first lien unless the first lien is also held by United. As a result, management applies the weighted average historical loss factor for this category and appropriately adjusts it to reflect the increased risk of loss from these credits. Management reviews the resulting loss factors for each category of the loan portfolio and evaluates whether qualitative adjustments are necessary to take into consideration recent credit trends such as increases or decreases in past due, nonaccrual, criticized and classified loans, and other macro environmental factors such as changes in unemployment rates, employment rates, debt per capita, home price indices, and trends in real estate value indices. Management believes that its method of determining the balance of the allowance for credit losses provides a reasonable and reliable basis for measuring and reporting losses that are incurred in the loan portfolio as of the reporting date. When a loan officer determines that a loan is uncollectible, he or she is responsible for recommending that the loan be placed on nonaccrual status and evaluated for impairment, which, if necessary, could result in fully or partially charging off the loan or establishing a specific reserve. Full or partial charge-offs may also be recommended by the Collections Department, the Special Assets Department, the Loss Mitigation Department and the Foreclosure/OREO Department. Nonaccrual real estate loans are generally charged down to fair value of collateral less costs to sell at the time they are placed on nonaccrual status. Commercial and consumer asset quality committees meet monthly to review charge-offs that have occurred during the previous month. Participants include the respective Chief Credit Officer, Senior Risk Officers, Senior Credit Officers, Regional Credit Managers, and Special Asset Officers. Generally, closed-end retail loans (installment and residential mortgage loans) past due 90 cumulative days are written down to their collateral value less estimated selling costs. Open-end (revolving) unsecured retail loans which are past due 90 cumulative days from their contractual due date are generally charged-off. The following table presents loans individually evaluated for impairment by class as of the dates indicated (in thousands) . September 30, 2019 December 31, 2018 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated With no related allowance recorded: Owner occupied commercial real estate $ 9,225 $ 7,107 $ — $ 8,650 $ 6,546 $ — Income producing commercial real estate 5,363 5,164 — 9,986 9,881 — Commercial & industrial 1,297 1,037 — 525 370 — Commercial construction 1,716 1,607 — 685 507 — Equipment financing 111 111 — — — — Total commercial 17,712 15,026 — 19,846 17,304 — Residential mortgage 7,666 6,808 — 5,787 5,202 — Home equity lines of credit 275 213 — 330 234 — Residential construction 790 658 — 554 428 — Consumer direct 28 28 — 18 17 — Indirect auto 236 223 — 294 292 — Total with no related allowance recorded 26,707 22,956 — 26,829 23,477 — With an allowance recorded: Owner occupied commercial real estate 11,509 11,455 859 11,095 11,056 862 Income producing commercial real estate 5,968 5,584 261 6,968 6,703 402 Commercial & industrial 1,200 1,031 33 1,652 1,251 32 Commercial construction 1,826 1,680 49 2,130 1,984 71 Equipment financing — — — — — — Total commercial 20,503 19,750 1,202 21,845 20,994 1,367 Residential mortgage 9,922 9,864 808 9,169 9,018 861 Home equity lines of credit 89 87 16 45 42 1 Residential construction 637 625 51 791 779 51 Consumer direct 171 170 5 199 194 6 Indirect auto 820 820 41 946 945 26 Total with an allowance recorded 32,142 31,316 2,123 32,995 31,972 2,312 Total $ 58,849 $ 54,272 $ 2,123 $ 59,824 $ 55,449 $ 2,312 As of September 30, 2019 and December 31, 2018 , $2.12 million and $2.31 million , respectively, of specific reserves were allocated to customers whose loan terms have been modified in TDRs. As of September 30, 2019 and December 31, 2018 , there were no commitments to lend additional amounts to customers with outstanding loans that are classified as TDRs. The modification of the TDR terms included one or a combination of the following: a reduction of the stated interest rate of the loan or an extension of the amortization period that would not otherwise be considered in the current market for new debt with similar risk characteristics; a restructuring of the borrower’s debt into an “A/B note structure” in which the A note would fall within the borrower’s ability to pay and the remainder would be included in the B note; a mandated bankruptcy restructuring; or interest-only payment terms greater than 90 days when the borrower is unable to amortize the loan. Modified PCI loans are not accounted for as TDRs because they are not separated from the pools, and as such are not classified as impaired loans. Loans modified under the terms of a TDR during the three and nine months ended September 30, 2019 and 2018 are presented in the following table. In addition, the table presents loans modified under the terms of a TDR that defaulted (became 90 days or more delinquent) during the periods presented and were initially restructured within one year prior to default (dollars in thousands) . New TDRs Pre-modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment by Type of Modification TDRs Modified Within the Previous Twelve Months That Have Subsequently Defaulted Number of Contracts Rate Reduction Structure Other Total Number of Contracts Recorded Investment Three Months Ended September 30, 2019 Owner occupied commercial real estate — $ — $ — $ — $ — $ — — $ — Income producing commercial real estate — — — — — — — — Commercial & industrial — — — — — — — — Commercial construction — — — — — — — — Equipment financing 2 93 — 93 — 93 — — Total commercial 2 93 — 93 — 93 — — Residential mortgage 2 609 — 609 — 609 — — Home equity lines of credit — — — — — — — — Residential construction — — — — — — — — Consumer direct 3 21 — — 21 21 — — Indirect auto 4 101 — — 101 101 — — Total loans 11 $ 824 $ — $ 702 $ 122 $ 824 — $ — Nine Months Ended September 30, 2019 Owner occupied commercial real estate 2 $ 610 $ — $ 610 $ — $ 610 — $ — Income producing commercial real estate 1 169 — 169 — 169 — — Commercial & industrial 1 7 — — 7 7 — — Commercial construction — — — — — — — — Equipment financing 3 113 — 113 — 113 — — Total commercial 7 899 — 892 7 899 — — Residential mortgage 11 1,785 — 1,784 — 1,784 1 135 Home equity lines of credit 1 50 — 50 — 50 — — Residential construction 1 22 — — 21 21 1 13 Consumer direct 3 21 — — 21 21 — — Indirect auto 15 271 — — 262 262 — — Total loans 38 $ 3,048 $ — $ 2,726 $ 311 $ 3,037 2 $ 148 Three Months Ended September 30, 2018 Owner occupied commercial real estate — $ — $ — $ — $ — $ — — $ — Income producing commercial real estate 1 3,647 — 3,637 — 3,637 — — Commercial & industrial — — — — — — — — Commercial construction — — — — — — — — Equipment financing — — — — — — — — Total commercial 1 3,647 — 3,637 — 3,637 — — Residential mortgage 4 421 — 395 — 395 — — Home equity lines of credit — — — — — — — — Residential construction — — — — — — — — Consumer direct — — — — — — — — Indirect auto 9 188 — — 188 188 — — Total loans 14 $ 4,256 $ — $ 4,032 $ 188 $ 4,220 — $ — Nine Months Ended September 30, 2018 Owner occupied commercial real estate 4 $ 1,276 $ — $ 1,260 $ — $ 1,260 3 $ 1,869 Income producing commercial real estate 2 3,753 106 3,637 — 3,743 — — Commercial & industrial 2 108 — 32 — 32 — — Commercial construction — — — — — — 1 3 Equipment financing — — — — — — — — Total commercial 8 5,137 106 4,929 — 5,035 4 1,872 Residential mortgage 8 1,186 — 1,159 — 1,159 1 101 Home equity lines of credit — — — — — — — — Residential construction — — — — — — — — Consumer direct — — — — — — — — Indirect auto 26 424 — — 424 424 — — Total loans 42 $ 6,747 $ 106 $ 6,088 $ 424 $ 6,618 5 $ 1,973 The average balances of impaired loans and income recognized on impaired loans while they were considered impaired are presented below for the periods indicated (in thousands) . 2019 2018 Three Months Ended September 30, Average Balance Interest Revenue Recognized During Impairment Cash Basis Interest Revenue Received Average Balance Interest Revenue Cash Basis Interest Revenue Received Owner occupied commercial real estate $ 18,759 $ 288 $ 290 $ 17,857 $ 291 $ 284 Income producing commercial real estate 10,906 144 153 18,623 240 232 Commercial & industrial 2,133 48 54 1,445 18 17 Commercial construction 3,316 38 39 2,869 39 39 Equipment financing 66 3 3 — — — Total commercial 35,180 521 539 40,794 588 572 Residential mortgage 16,669 195 203 14,654 168 162 Home equity lines of credit 301 4 2 275 3 3 Residential construction 1,298 22 25 1,295 23 23 Consumer direct 204 4 4 232 4 4 Indirect auto 1,069 14 14 1,220 16 16 Total $ 54,721 $ 760 $ 787 $ 58,470 $ 802 $ 780 Nine Months Ended September 30, Owner occupied commercial real estate $ 18,302 $ 846 $ 882 $ 20,623 $ 771 $ 800 Income producing commercial real estate 12,941 523 529 17,155 665 679 Commercial & industrial 1,921 74 89 1,861 83 83 Commercial construction 3,029 113 114 3,456 137 135 Equipment financing 29 3 3 — — — Total commercial 36,222 1,559 1,617 43,095 1,656 1,697 Residential mortgage 16,134 553 561 14,587 474 473 Home equity lines of credit 288 11 7 285 12 11 Residential construction 1,352 70 72 1,467 72 71 Consumer direct 197 11 11 260 14 14 Indirect auto 1,121 42 42 1,274 50 50 Total $ 55,314 $ 2,246 $ 2,310 $ 60,968 $ 2,278 $ 2,316 Nonaccrual and Past Due Loans United’s policy is to place loans on nonaccrual status when, in the opinion of management, the principal and interest on a loan is not likely to be repaid in full or when the loan becomes 90 days past due and is not well secured and in the process of collection. When a loan is classified on nonaccrual status, interest previously accrued but not collected is reversed against current interest revenue. Principal and interest payments received on a nonaccrual loan are generally applied to reduce the loan’s recorded investment. PCI loans are considered past due or delinquent when the contractual principal or interest due in accordance with the terms of the loan agreement remains unpaid after the due date of the scheduled payment. However, these loans are considered to be performing, even though they may be contractually past due, as any non-payment of contractual principal or interest is considered in the periodic re-estimation of expected cash flows and is included in the resulting recognition of current period loan loss provision or future period yield adjustments. The accrual of interest is discontinued on PCI loans if management can no longer reliably estimate future cash flows on the loan or pool of loans. No PCI loans were classified as nonaccrual at September 30, 2019 or December 31, 2018 as the carrying value of the respective loan or pool of loans cash flows were considered estimable and probable of collection. Therefore, interest revenue, through accretion of the difference between the carrying value of the loans and the expected cash flows, is being recognized on all PCI loans. The gross additional interest revenue that would have been earned if the loans classified as nonaccrual had performed in accordance with the original terms was approximately $338,000 and $213,000 for the three months ended September 30, 2019 and 2018 , respectively, and $965,000 and $812,000 for the nine months ended September 30, 2019 and 2018 , respectively. The following table presents the recorded investment in nonaccrual loans by loan class as of the dates indicated (in thousands) . September 30, 2019 December 31, 2018 Owner occupied commercial real estate $ 8,430 $ 6,421 Income producing commercial real estate 2,030 1,160 Commercial & industrial 2,625 1,417 Commercial construction 1,894 605 Equipment financing 1,974 2,677 Total commercial 16,953 12,280 Residential mortgage 9,475 8,035 Home equity lines of credit 3,065 2,360 Residential construction 597 288 Consumer direct 147 89 Indirect auto 595 726 Total $ 30,832 $ 23,778 Excluding PCI loans, substantially all loans more than 90 days past due were on nonaccrual status at September 30, 2019 and December 31, 2018 . The following table presents the aging of the recorded investment in past due loans by class of loans as of the dates indicated (in thousands) . Loans Past Due As of September 30, 2019 30 - 59 Days 60 - 89 Days > 90 Days Total Loans Not Past Due PCI Loans Total Owner occupied commercial real estate $ 1,881 $ 978 $ 6,447 $ 9,306 $ 1,673,169 $ 9,535 $ 1,692,010 Income producing commercial real estate 9,422 93 915 10,430 1,886,635 36,803 1,933,868 Commercial & industrial 6,017 663 2,055 8,735 1,262,148 360 1,271,243 Commercial construction 116 11 121 248 993,552 7,001 1,000,801 Equipment financing 1,039 668 1,901 3,608 721,167 4,731 729,506 Total commercial 18,475 2,413 11,439 32,327 6,536,671 58,430 6,627,428 Residential mortgage 4,649 1,921 1,155 7,725 1,104,126 8,977 1,120,828 Home equity lines of credit 2,620 479 897 3,996 663,590 1,401 668,987 Residential construction 314 71 150 535 228,312 505 229,352 Consumer direct 627 74 40 741 124,396 380 125,517 Indirect auto 508 142 520 1,170 129,984 — 131,154 Total loans $ 27,193 $ 5,100 $ 14,201 $ 46,494 $ 8,787,079 $ 69,693 $ 8,903,266 Loans Past Due As of December 31, 2018 30 - 59 Days 60 - 89 Days > 90 Days Total Loans Not Past Due PCI Loans Total Owner occupied commercial real estate $ 2,542 $ 2,897 $ 1,011 $ 6,450 $ 1,631,602 $ 9,852 $ 1,647,904 Income producing commercial real estate 1,624 291 301 2,216 1,771,893 38,311 1,812,420 Commercial & industrial 7,189 718 400 8,307 1,269,632 408 1,278,347 Commercial construction 267 — 68 335 789,916 5,907 796,158 Equipment financing 1,351 739 2,658 4,748 551,924 7,942 564,614 Total commercial 12,973 4,645 4,438 22,056 6,014,967 62,420 6,099,443 Residential mortgage 5,461 1,788 1,950 9,199 1,030,883 9,150 1,049,232 Home equity lines of credit 2,112 864 902 3,878 688,520 1,612 694,010 Residential construction 509 63 190 762 209,515 734 211,011 Consumer direct 600 82 21 703 120,777 533 122,013 Indirect auto 750 323 633 1,706 205,986 — 207,692 Total loans $ 22,405 $ 7,765 $ 8,134 $ 38,304 $ 8,270,648 $ 74,449 $ 8,383,401 Risk Ratings United categorizes commercial loans, with the exception of equipment financing receivables, into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information, and current industry and economic trends, among other factors. United analyzes loans individually by classifying the loans as to credit risk. This analysis is performed on a continual basis. United uses the following definitions for its risk ratings: Watch. Loans in this category are presently protected from apparent loss; however, weaknesses exist that could cause future impairment, including the deterioration of financial ratios, past due status and questionable management capabilities. These loans require more than the ordinary amount of supervision. Collateral values generally afford adequate coverage, but may not be immediately marketable. Substandard. These loans are inadequately protected by the current net worth and paying capacity of the obligor or by the collateral pledged. Specific and well-defined weaknesses exist that may include poor liquidity and deterioration of financial ratios. The loan may be past due and related deposit accounts experiencing overdrafts. There is the distinct possibility that United will sustain some loss if deficiencies are not corrected. If possible, immediate corrective action is taken. Doubtful. Specific weaknesses characterized as Substandard that are severe enough to make collection in full highly questionable and improbable. There is no reliable secondary source of full repayment. Loss. Loans categorized as Loss have the same characteristics as Doubtful; however, probability of loss is certain. Loans classified as Loss are charged off. Equipment Financing Receivables and Consumer Purpose Loans. United applies a pass / fail grading system to all equipment financing receivables and consumer purpose loans. Under the pass / fail grading system, loans that become past due 90 days or are in bankruptcy are classified as “fail” and all other loans are classified as “pass”. For reporting purposes, loans in these categories that are classified as “fail” are reported in the substandard column and all other loans are reported in the “pass” column. Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be pass rated loans. Based on the most recent analysis performed, the risk category of loans by class of loans as of the dates indicated is as follows (in thousands) . Pass Watch Substandard Doubtful / Loss Total As of September 30, 2019 Owner occupied commercial real estate $ 1,606,137 $ 32,725 $ 43,613 $ — $ 1,682,475 Income producing commercial real estate 1,844,176 25,451 27,438 — 1,897,065 Commercial & industrial 1,199,399 32,105 39,379 — 1,270,883 Commercial construction 963,742 22,393 7,665 — 993,800 Equipment financing 722,801 — 1,974 — 724,775 Total commercial 6,336,255 112,674 120,069 — 6,568,998 Residential mortgage 1,099,233 — 12,618 — 1,111,851 Home equity lines of credit 663,087 — 4,499 — 667,586 Residential construction 228,029 — 818 — 228,847 Consumer direct 124,729 — 408 — 125,137 Indirect auto 129,306 — 1,848 — 131,154 Total loans, excluding PCI loans 8,580,639 112,674 140,260 — 8,833,573 Owner occupied commercial real estate 1,905 5,262 2,368 — 9,535 Income producing commercial real estate 26,499 8,204 2,100 — 36,803 Commercial & industrial 86 50 224 — 360 Commercial construction 3,190 581 3,230 — 7,001 Equipment financing 4,715 — 16 — 4,731 Total commercial 36,395 14,097 7,938 — 58,430 Residential mortgage 7,505 — 1,472 — 8,977 Home equity lines of credit 1,361 — 40 — 1,401 Residential construction 467 — 38 — 505 Consumer direct 354 — 26 — 380 Indirect auto — — — — — Total PCI loans 46,082 14,097 9,514 — 69,693 Total loan portfolio $ 8,626,721 $ 126,771 $ 149,774 $ — $ 8,903,266 As of December 31, 2018 Owner occupied commercial real estate $ 1,585,797 $ 16,651 $ 35,604 $ — $ 1,638,052 Income producing commercial real estate 1,735,456 20,923 17,730 — 1,774,109 Commercial & industrial 1,247,206 8,430 22,303 — 1,277,939 Commercial construction 777,780 4,533 7,938 — 790,251 Equipment financing 553,995 — 2,677 — 556,672 Total commercial 5,900,234 50,537 86,252 — 6,037,023 Residential mortgage 1,028,660 — 11,422 — 1,040,082 Home equity lines of credit 688,493 — 3,905 — 692,398 Residential construction 209,744 — 533 — 210,277 Consumer direct 121,247 19 214 — 121,480 Indirect auto 205,632 — 2,060 — 207,692 Total loans, excluding PCI loans 8,154,010 50,556 104,386 — 8,308,952 Owner occupied commercial real estate 3,352 2,774 3,726 — 9,852 Income producing commercial real estate 23,430 13,403 1,478 — 38,311 Commercial & industrial 266 48 94 — 408 Commercial construction 3,503 188 2,216 — 5,907 Equipment financing 7,725 — 217 — 7,942 Total commercial 38,276 16,413 7,731 — 62,420 Residential mortgage 6,914 — 2,236 — 9,150 Home equity lines of credit 1,492 — 120 — 1,612 Residential construction 687 — 47 — 734 Consumer direct 493 — 40 — 533 Indirect auto — — — — — Total PCI loans 47,862 16,413 10,174 — 74,449 Total loan portfolio $ 8,201,872 $ 66,969 $ 114,560 $ — $ 8,383,401

Reclassifications Out of Accumu

Reclassifications Out of Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Reclassifications Out of Accumulated Other Comprehensive Income	Reclassifications Out of Accumulated Other Comprehensive Income The following table presents the details regarding amounts reclassified out of accumulated other comprehensive income for the periods indicated (in thousands) . Details about Accumulated Other Comprehensive Income Components Three Months Ended Nine Months Ended Affected Line Item in the Statement Where Net Income is Presented 2019 2018 2019 2018 Realized gains (losses) on available-for-sale securities: $ — $ 2 $ (118 ) $ (1,302 ) Securities gains (losses), net — (5 ) 30 312 Income tax (expense) benefit $ — $ (3 ) $ (88 ) $ (990 ) Net of tax Amortization of losses included in net income on available-for-sale securities transferred to held-to-maturity: $ (105 ) $ (168 ) $ (282 ) $ (607 ) Investment securities interest revenue 25 40 67 149 Income tax benefit $ (80 ) $ (128 ) $ (215 ) $ (458 ) Net of tax Amortization of losses included in net income on derivative financial instruments accounted for as cash flow hedges: Amortization of losses on de-designated positions $ — $ (105 ) $ (102 ) $ (395 ) Money market deposit interest expense Amortization of losses on de-designated positions — — (235 ) — Other expense — (105 ) (337 ) (395 ) Total before tax — 27 86 103 Income tax benefit $ — $ (78 ) $ (251 ) $ (292 ) Net of tax Reclassifications related to defined benefit pension plan activity: Prior service cost $ (158 ) $ (167 ) $ (476 ) $ (501 ) Salaries and employee benefits expense Actuarial losses (16 ) (60 ) (45 ) (180 ) Other expense Termination of defined benefit pension plan (1,558 ) — (1,558 ) — Merger-related and other charges (1,732 ) (227 ) (2,079 ) (681 ) Total before tax 443 57 531 188 Income tax benefit $ (1,289 ) $ (170 ) $ (1,548 ) $ (493 ) Net of tax Total reclassifications for the period $ (1,369 ) $ (379 ) $ (2,102 ) $ (2,233 ) Net of tax Amounts shown above in parentheses reduce earnings.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The following table sets forth the computation of basic and diluted earnings per share for the periods indicated (in thousands, except per share data) . Three Months Ended Nine Months Ended 2019 2018 2019 2018 Net income $ 48,362 $ 43,682 $ 136,709 $ 120,974 Dividends and undistributed earnings allocated to unvested shares (351 ) (301 ) (982 ) (850 ) Net income available to common shareholders $ 48,011 $ 43,381 $ 135,727 $ 120,124 Weighted average shares outstanding: Basic 79,663 79,806 79,714 79,588 Effect of dilutive securities Stock options 1 6 1 8 Restricted stock units 3 6 3 2 Diluted 79,667 79,818 79,718 79,598 Net income per common share: Basic $ 0.60 $ 0.54 $ 1.70 $ 1.51 Diluted $ 0.60 $ 0.54 $ 1.70 $ 1.51 At September 30, 2019 , United excluded 1,000 potentially dilutive shares of common stock issuable upon exercise of stock options with a weighted average exercise price of $30.45 from the computation of diluted earnings per share because of their antidilutive effect. At September 30, 2018 , United had potentially dilutive warrants outstanding to purchase 219,909 shares of common stock at $61.40 per share. For the three and nine months ended September 30, 2018 , there were also 33,283 and 32,283 , respectively, of potentially dilutive shares of common stock issuable upon exercise of stock options that were excluded from the computation of diluted earnings per share because of their antidilutive effect.

Derivatives and Hedging Activit

Derivatives and Hedging Activities	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivatives and Hedging Activities Risk Management Objective of Using Derivatives United is exposed to certain risks arising from both its business operations and economic conditions. United principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. United manages interest rate risk through a combination of pricing and term structure of deposit product offerings, the amount and duration of its investment securities portfolio and wholesale funding and, to a lesser degree, through the use of derivative financial instruments. From time to time, United enters into derivative financial instruments to manage interest rate risk exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Derivative financial instruments are used to manage differences in the amount, timing, and duration of known or expected cash receipts and known or expected cash payments principally related to loans, investment securities, wholesale borrowings and deposits. In conjunction with the FASB’s fair value measurement guidance, United made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting arrangements on a gross basis. United clears certain derivatives centrally through the Chicago Mercantile Exchange (“CME”). CME rules legally characterize variation margin payments for centrally cleared derivatives as settlements of the derivatives’ exposure rather than as collateral. As a result, the variation margin payment and the related derivative instruments are considered a single unit of account for accounting purposes. Variation margin, as determined by the CME, is settled daily. As a result, derivative contracts that clear through the CME have an estimated fair value of zero. The table below presents the fair value of derivative financial instruments as of the dates indicated as well as their classification on the consolidated balance sheets (in thousands) : Derivatives designated as hedging instruments Interest Rate Products Balance Sheet Location September 30, 2019 December 31, 2018 Fair value hedge of brokered CDs Derivative liabilities $ 685 $ 1,682 $ 685 $ 1,682 Derivatives not designated as hedging instruments Interest Rate Products Balance Sheet Location September 30, 2019 December 31, 2018 Customer derivative positions Derivative assets $ 37,081 $ 5,216 Dealer offsets to customer derivative positions Derivative assets 118 7,620 Mortgage banking - loan commitment Derivative assets 2,732 1,190 Mortgage banking - forward sales commitment Derivative assets 313 28 Bifurcated embedded derivatives Derivative assets 3,511 10,651 $ 43,755 $ 24,705 Customer derivative positions Derivative liabilities $ 122 $ 9,661 Dealer offsets to customer derivative positions Derivative liabilities 9,222 781 Risk participations Derivative liabilities 14 8 Mortgage banking - forward sales commitment Derivative liabilities 187 259 Dealer offsets to bifurcated embedded derivatives Derivative liabilities 6,014 13,339 De-designated hedges Derivative liabilities — 703 $ 15,559 $ 24,751 Customer derivative positions are between United and certain commercial loan customers with offsetting positions to dealers under a back-to-back swap/cap program. In addition, to accommodate customers, United occasionally enters into credit risk participation agreements with counterparty banks to accept a portion of the credit risk related to interest rate swaps. The agreements, which are typically executed in conjunction with a participation in a loan with the same customer, allow customers to execute an interest rate swap with one bank while allowing for the distribution of the credit risk among participating members. Collateral used to support the credit risk for the underlying lending relationship is also available to offset the risk of credit risk participations and customer derivative positions. United also has three interest rate swap contracts that are not designated as hedging instruments but are economic hedges of market-linked brokered certificates of deposit. The market-linked brokered certificates of deposit contain embedded derivatives that are bifurcated from the host instruments and are marked to market through earnings. The fair value marks on the market linked swaps and the bifurcated embedded derivatives tend to move in opposite directions with changes in 90-day London Interbank Offered Rate (“LIBOR”) and therefore provide an economic hedge. In addition, United originates certain residential mortgage loans with the intention of selling these loans. Between the time United enters into an interest-rate lock commitment to originate a residential mortgage loan that is to be held for sale and the time the loan is funded and eventually sold, United is subject to the risk of variability in market prices. United enters into forward sale agreements to mitigate risk and to protect the expected gain on the eventual loan sale. The commitments to originate residential mortgage loans and forward loan sales commitments are freestanding derivative instruments. United accounts for most newly originated mortgage loans at fair value pursuant to the fair value option, and these loans are not reflected in the table above. Fair value adjustments on these derivative instruments are recorded within mortgage loan and other related fee income in the consolidated statements of income. Cash Flow Hedges of Interest Rate Risk At September 30, 2019 and December 31, 2018 United did not have any active cash flow hedges. Changes in balance sheet composition and interest rate risk position made cash flow hedges not currently necessary as protection against rising interest rates. The loss remaining in other comprehensive income from prior hedges that had previously been de-designated was being amortized into earnings over the original term of the swaps as the forecasted transactions that the swaps were originally designated to hedge were still expected to occur. During the second quarter of 2019, United amortized the remaining balance of losses on terminated hedging positions from other comprehensive income, which was the only effect of cash flow hedges on the consolidated statements of income for the nine months ended September 30, 2019 and 2018 . See Note 7 for further detail. Fair Value Hedges of Interest Rate Risk United is exposed to changes in the fair value of certain of its fixed-rate obligations due to changes in interest rates. United uses interest rate swaps to manage its exposure to changes in fair value on these instruments attributable to changes in interest rates. Interest rate swaps designated as fair value hedges of brokered deposits involve the receipt of fixed-rate amounts from a counterparty in exchange for United making variable rate payments over the life of the agreements without the exchange of the underlying notional amount. At September 30, 2019 , United had four interest rate swaps with a notional amount of $37.9 million that were designated as fair value hedges of interest rate risk and were pay-variable / receive-fixed swaps hedging the changes in the fair value of fixed-rate brokered time deposits resulting from changes in interest rates. As of September 30, 2019 , the hedged brokered time deposits, which were included in brokered deposits on the consolidated balance sheet, had a carrying value of $36.3 million , which included cumulative fair value hedging adjustments of $480,000 . At December 31, 2018 , United had four interest rate swaps with an aggregate notional amount of $39.0 million that were designated as fair value hedges of interest rate risk and were pay-variable / receive-fixed, hedging the changes in the fair value of fixed-rate brokered time deposits resulting from changes in interest rates. For derivatives designated and that qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in earnings. United includes the gain or loss on the hedged items in the same income statement line item as the offsetting loss or gain on the related derivatives. United also recognized a net increase in interest expense of $97,000 and $300,000 , respectively, for the three and nine months ended September 30, 2019 and a net increase in interest expense of $74,000 and $154,000 , respectively, for the three and nine months ended September 30, 2018 related to fair value hedges of brokered time deposits, which includes net settlements on the derivatives. United recognized an increase in interest revenue on securities during the nine months ended September 30, 2018 of $17,000 related to fair value hedges of corporate bonds which were terminated during the first quarter of 2018. The table below presents the effect of derivatives in fair value hedging relationships on the consolidated statement of income for the periods indicated (in thousands) . Location of Gain (Loss) Recognized in Income on Derivative Amount of Gain (Loss) Recognized in Income on Derivative Amount of Gain (Loss) Recognized in Income on Hedged Item 2019 2018 2019 2018 Three Months Ended September 30, Fair value hedges of brokered CDs Interest expense $ 71 $ (75 ) $ (55 ) $ (52 ) $ 71 $ (75 ) $ (55 ) $ (52 ) Nine Months Ended September 30, Fair value hedges of brokered CDs Interest expense $ 671 $ (912 ) $ (668 ) $ 518 Fair value hedges of corporate bonds Interest revenue — (336 ) — 405 $ 671 $ (1,248 ) $ (668 ) $ 923 In certain cases, the estate of deceased brokered certificate of deposit holders may put the certificate of deposit back to United at par upon the death of the holder. When these estate puts occur, a gain or loss is recognized for the difference between the fair value and the par amount of the deposits put back. The change in the fair value of brokered time deposits that are being hedged in fair value hedging relationships reported in the table above includes gains and losses from estate puts. Derivatives Not Designated as Hedging Instruments The table below presents the gains and losses recognized in income on derivatives not designated as hedging instruments for the periods indicated (in thousands) . Location of Gain (Loss) Recognized in Income on Derivative Amount of Gain (Loss) Recognized in Income on Derivative 2019 2018 Three Months Ended September 30, Customer derivatives and dealer offsets Other noninterest income $ 649 $ 611 Bifurcated embedded derivatives and dealer offsets Other noninterest income — 17 De-designated hedges Other noninterest income — (25 ) Mortgage banking derivatives Mortgage loan revenue (49 ) (213 ) Risk participations Other noninterest income (1 ) — $ 599 $ 390 Nine Months Ended September 30, Customer derivatives and dealer offsets Other noninterest income $ 2,376 $ 2,028 Bifurcated embedded derivatives and dealer offsets Other noninterest income 144 398 Interest rate caps Other noninterest income — 276 De-designated hedges Other noninterest income (193 ) (108 ) Mortgage banking derivatives Mortgage loan revenue (987 ) 1,207 Risk participations Other noninterest income (5 ) 12 $ 1,335 $ 3,813 Credit-Risk-Related Contingent Features United manages its credit exposure on derivatives transactions by entering into a bilateral credit support agreement with each non-customer counterparty. The credit support agreements require collateralization of exposures beyond specified minimum threshold amounts. The details of these agreements, including the minimum thresholds, vary by counterparty. As of September 30, 2019 , collateral totaling $16.3 million was pledged toward derivatives in a liability position. United’s agreements with each of its derivative counterparties provide that if either party defaults on any of its indebtedness, then it could also be declared in default on its derivative obligations. The agreements with derivatives counterparties also include provisions that if not met, could result in United being declared in default. United has agreements with certain of its derivative counterparties that provide that if United fails to maintain its status as a well-capitalized institution or is subject to a prompt corrective action directive, the counterparty could terminate the derivative positions and United would be required to settle its obligations under the agreements. Derivatives that are centrally cleared do not have credit-risk-related features that would require additional collateral if United’s credit rating were downgraded.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation United has an equity compensation plan that allows for grants of incentive stock options, nonqualified stock options, restricted stock and restricted stock unit awards (also referred to as “nonvested stock” awards), stock awards, performance share awards or stock appreciation rights. Options granted under the plan have an exercise price no less than the fair market value of the underlying stock at the date of grant. The general terms of the plan include a vesting period (usually four years , although certain acquisition-related performance grants may have periods of less than four years and up to ten years ) with an exercisable period not to exceed ten years . Certain options, restricted stock and restricted stock unit awards provide for accelerated vesting if there is a change in control (as defined in the plan). Through September 30, 2019 , incentive stock options, nonqualified stock options, restricted stock and restricted stock unit awards, base salary stock grants and performance share awards have been granted under the plan. As of September 30, 2019 , 1.31 million additional awards remained available for grant under the plan. The following table shows stock option activity for the first nine months of 2019 . Options Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term (Years) Aggregate Outstanding at December 31, 2018 47,139 $ 27.07 Exercised (12,000 ) 16.44 Cancelled/forfeited (2,396 ) 29.68 Expired (30,243 ) 31.43 Outstanding at September 30, 2019 2,500 22.81 1.9 $ 16 Exercisable at September 30, 2019 2,500 22.81 1.9 16 The fair value of each option is estimated on the date of grant using the Black-Scholes model. No stock options were granted during the nine months ended September 30, 2019 and 2018 . United recognized $18,000 in compensation expense related to stock options during the nine months ended September 30, 2018 , and no compensation expense related to stock options in the same period of 2019 . The amount of compensation expense was determined based on the fair value of the options at the time of grant, multiplied by the number of options granted that were expected to vest, which was then amortized over the vesting period. The table below presents restricted stock units activity for the first nine months of 2019 . Restricted Stock Unit Awards Shares Weighted- Average Grant- Date Fair Value Weighted- Average Remaining Contractual Term (Years) Aggregate Outstanding at December 31, 2018 759,746 $ 27.66 Granted 301,301 26.55 Vested (171,177 ) 24.42 $ 4,589 Cancelled (33,754 ) 25.79 Outstanding at September 30, 2019 856,116 27.99 3.7 24,271 Historically, compensation expense for restricted stock units has been based on the market value of United’s common stock on the date of grant. During the third quarter of 2019, as it had during the third quarter 2018, in addition to the time-based restricted stock unit awards, United’s Board of Directors approved performance-based restricted stock units. The performance-based restricted stock awards granted during the third quarter 2019 will vest based on achieving, during the applicable calendar-year performance periods from 2020 through 2023, certain performance and market targets relative to a bank peer group. Achieving target performance on both the performance and market targets for all performance periods will result in the issuance of 47,642 shares, although additional shares may be issued if more stringent performance and market hurdles are met. The per share fair market value of these performance-based restricted stock unit award of $26.32 was estimated using the Monte Carlo Simulation valuation model. United recognizes the impact of forfeitures as they occur. The value of restricted stock unit awards is amortized into expense over the service period. For the nine months ended September 30, 2019 and 2018 , expense of $7.40 million and $3.79 million , respectively, was recognized related to restricted stock unit awards granted to United employees. Of the expense related to restricted stock unit awards during the nine months ended September 30, 2019 , $1.38 million related to the modification of existing awards resulting from an acceleration of vesting of awards due to retirement and $740,000 related to awards granted in conjunction with an acquisition, both of which were recognized in merger-related and other charges in the consolidated statement of income. The remaining expense of $5.28 million for the nine months ended September 30, 2019 was recognized in salaries and employee benefits expense, as was the entire amount for the nine months ended September 30, 2018. In addition, for the nine months ended September 30, 2019 and 2018 , $283,000 and $264,000 , respectively, was recognized in other operating expense for restricted stock unit awards granted to members of United’s Board of Directors. A deferred income tax benefit related to stock-based compensation expense of $1.96 million and $1.04 million was included in the determination of income tax expense for the nine months ended September 30, 2019 and 2018 , respectively. As of September 30, 2019 , there was $16.5 million of unrecognized expense related to non-vested restricted stock unit awards granted under the plan. That cost is expected to be recognized over a weighted-average period of 2.6 years . As of September 30, 2019 , there was no unrecognized expense related to non-vested stock options granted under the plan.

Common Stock

Common Stock	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Common Stock	Common Stock In November of 2018, United’s Board of Directors approved an increase and extension of the ongoing common stock repurchase program, authorizing $50 million of repurchases of United’s outstanding common stock. The program is scheduled to expire on the earlier of United’s repurchase of its common stock having an aggregate purchase price of $50 million or December 31, 2019 . Under the program, shares may be repurchased in the open market or in privately negotiated transactions, from time to time, subject to market conditions. During the three and nine months ended September 30, 2019 , 195,443 and 500,495 shares, respectively, were repurchased under the program. During the nine months ended September 30, 2018 , no shares were repurchased under the program. As of September 30, 2019 , United had remaining authorization to repurchase up to $37.0 million of outstanding common stock under the program. In November of 2019, the Board of Directors authorized an updated repurchase program for $50 million of its common shares that may be acquired through December 31, 2020 .

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The income tax provision for the three and nine months ended September 30, 2019 was $14.0 million and $40.1 million , respectively, which represented effective tax rates of 22.4% and 22.7% , respectively, for those periods. The income tax provision for the three and nine months ended September 30, 2018 was $13.1 million and $37.4 million , respectively, which represented effective tax rates of 23.1% and 23.6% , respectively, for those periods. At September 30, 2019 and December 31, 2018 , United maintained a valuation allowance on its net deferred tax asset of $3.37 million . Management assesses the valuation allowance recorded against its net deferred tax asset at each reporting period. The determination of whether a valuation allowance for its net deferred tax asset is appropriate is subject to considerable judgment and requires an evaluation of all the positive and negative evidence. United is subject to income taxation in the United States and various state jurisdictions. United’s federal and state income tax returns are filed on a consolidated basis. Currently, no years for which United filed a federal income tax return are under examination by the IRS, and there are no state tax examinations currently in progress. United is no longer subject to income tax examinations from state and local income tax authorities for years before 2016. Although it is not possible to know the ultimate outcome of future examinations, management believes that the liability recorded for uncertain tax positions is appropriate. At September 30, 2019 and December 31, 2018 , unrecognized income tax benefits related to uncertain tax positions totaled $3.26 million .

Assets and Liabilities Measured

Assets and Liabilities Measured at Fair Value	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value	Assets and Liabilities Measured at Fair Value Fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, United uses a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy). United has processes in place to review the significant valuation inputs and to reassess how the instruments are classified in the valuation framework. Fair Value Hierarchy Level 1 Valuation is based upon quoted prices (unadjusted) in active markets for identical assets or liabilities that United has the ability to access. Level 2 Valuation is based upon quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals. Level 3 Valuation is generated from model-based techniques that use at least one significant assumption based on unobservable inputs for the asset or liability, which are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances when the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. The following is a description of the valuation methodologies used for assets and liabilities recorded at fair value. Investment Securities Debt securities available-for-sale and equity securities with readily determinable fair values are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include mortgage-backed securities issued by government sponsored entities, municipal bonds, corporate debt securities and asset-backed securities and are valued based on observable inputs that include: quoted market prices for similar assets, quoted market prices that are not in an active market, or other inputs that are observable in the market and can be corroborated by observable market data for substantially the full term of the securities. Securities classified as Level 3 include those traded in less liquid markets and are valued based on estimates obtained from broker-dealers that are not directly observable. Deferred Compensation Plan Assets and Liabilities Included in other assets in the consolidated balance sheet are assets related to employee deferred compensation plans. The assets associated with these plans are invested in mutual funds and classified as Level 1. Deferred compensation liabilities, also classified as Level 1, are carried at the fair value of the obligation to the employee, which mirrors the fair value of the invested assets and is included in other liabilities in the consolidated balance sheet. Mortgage Loans Held for Sale United has elected the fair value option for most of its newly originated mortgage loans held for sale in order to reduce certain timing differences and better match changes in fair values of the loans with changes in the value of derivative instruments used to economically hedge them. The fair value of mortgage loans held for sale is determined using quoted prices for a similar asset, adjusted for specific attributes of that loan (Level 2). Derivative Financial Instruments United uses interest rate swaps and interest rate floors to manage its interest rate risk. The valuation of these instruments is typically 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 volatilities. The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts and the discounted expected variable cash payments. The variable cash payments are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves. United also uses best effort and mandatory delivery forward loan sale commitments to hedge risk in its mortgage lending business. United incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, United has considered the effect of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees. Although management has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, management had assessed the significance of the effect 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. Derivatives classified as Level 3 included structured derivatives for which broker quotes, used as a key valuation input, were not observable consistent with a Level 2 disclosure. The fair value of risk participations incorporates Level 3 inputs to evaluate the likelihood of customer default. The fair value of interest rate lock commitments, which is related to mortgage loan commitments, is categorized as Level 3 based on unobservable inputs for commitments that United does not expect to fund. Servicing Rights for SBA/USDA Loans United recognizes servicing rights upon the sale of SBA/USDA loans sold with servicing retained. Management has elected to carry this asset at fair value. Given the nature of the asset, the key valuation inputs are unobservable, and management classifies this asset as Level 3. Residential Mortgage Servicing Rights United recognizes servicing rights upon the sale of residential mortgage loans sold with servicing retained. Management has elected to carry this asset at fair value. Given the nature of the asset, the key valuation inputs are unobservable, and management classifies this asset as Level 3. Pension Plan Assets For information on the fair value of pension plan assets, see Note 17 in the 2018 10-K. Assets and Liabilities Measured at Fair Value on a Recurring Basis The table below presents United’s assets and liabilities measured at fair value on a recurring basis as of the dates indicated, aggregated by the level in the fair value hierarchy within which those measurements fall (in thousands) . September 30, 2019 Level 1 Level 2 Level 3 Total Assets: Debt securities available for sale: U.S. Treasuries $ 154,632 $ — $ — $ 154,632 U.S. Government agencies — 3,175 — 3,175 State and political subdivisions — 227,325 — 227,325 Residential mortgage-backed securities — 1,256,633 — 1,256,633 Commercial mortgage-backed securities — 322,465 — 322,465 Corporate bonds — 200,197 998 201,195 Asset-backed securities — 106,621 — 106,621 Equity securities with readily available fair values 1,836 — — 1,836 Mortgage loans held for sale — 54,625 — 54,625 Deferred compensation plan assets 7,668 — — 7,668 Servicing rights for SBA/USDA loans — — 7,246 7,246 Residential mortgage servicing rights — — 11,089 11,089 Derivative financial instruments — 37,512 6,243 43,755 Total assets $ 164,136 $ 2,208,553 $ 25,576 $ 2,398,265 Liabilities: Deferred compensation plan liability $ 7,680 $ — $ — $ 7,680 Derivative financial instruments — 9,531 6,713 16,244 Total liabilities $ 7,680 $ 9,531 $ 6,713 $ 23,924 December 31, 2018 Level 1 Level 2 Level 3 Total Assets: Debt securities available for sale U.S. Treasuries $ 149,307 $ — $ — $ 149,307 U.S. Agencies — 25,553 — 25,553 State and political subdivisions — 233,941 — 233,941 Residential mortgage-backed securities — 1,445,910 — 1,445,910 Commercial mortgage-backed securities — 391,917 — 391,917 Corporate bonds — 198,168 995 199,163 Asset-backed securities — 182,676 — 182,676 Equity securities with readily available fair values 1,076 — — 1,076 Mortgage loans held for sale — 18,935 — 18,935 Deferred compensation plan assets 6,404 — — 6,404 Servicing rights for SBA/USDA loans — — 7,510 7,510 Residential mortgage servicing rights — — 11,877 11,877 Derivative financial instruments — 12,864 11,841 24,705 Total assets $ 156,787 $ 2,509,964 $ 32,223 $ 2,698,974 Liabilities: Deferred compensation plan liability $ 6,404 $ — $ — $ 6,404 Derivative financial instruments — 10,701 15,732 26,433 Total liabilities $ 6,404 $ 10,701 $ 15,732 $ 32,837 The following table shows a reconciliation of the beginning and ending balances for the periods indicated for assets measured at fair value on a recurring basis using significant unobservable inputs that are classified as Level 3 values (in thousands) . 2019 2018 Derivative Asset Derivative Liability Servicing rights for SBA/USDA loans Residential mortgage servicing rights Debt Securities Available-for-Sale Derivative Derivative Servicing rights for SBA/USDA loans Residential mortgage servicing rights Debt Securities Available-for-Sale Three Months Ended September 30, Balance at beginning of period $ 7,744 $ 9,012 $ 7,380 $ 10,679 $ 995 $ 14,510 $ 18,366 $ 7,509 $ 10,801 $ 990 Additions — — 486 1,789 — — — 745 1,397 — Sales and settlements — — (286 ) (416 ) — — — (242 ) (146 ) — Other comprehensive income — — — — 3 — — — — 5 Amounts included in earnings - fair value adjustments (1,501 ) (2,299 ) (334 ) (963 ) — (94 ) 379 (514 ) (21 ) — Balance at end of period $ 6,243 $ 6,713 $ 7,246 $ 11,089 $ 998 $ 14,416 $ 18,745 $ 7,498 $ 12,031 $ 995 Nine Months Ended September 30, Balance at beginning of period $ 11,841 $ 15,732 $ 7,510 $ 11,877 $ 995 $ 12,207 $ 16,744 $ 7,740 $ 8,262 $ 900 Business combinations — — — — — — — (354 ) — — Additions — — 1,266 3,880 — — — 1,837 3,505 — Sales and settlements (1,135 ) (2,330 ) (837 ) (719 ) — (1,029 ) (1,347 ) (649 ) (352 ) — Other comprehensive income — — — — 3 — — — — 95 Amounts included in earnings - fair value adjustments (4,463 ) (6,689 ) (693 ) (3,949 ) — 3,238 3,348 (1,076 ) 616 — Balance at end of period $ 6,243 $ 6,713 $ 7,246 $ 11,089 $ 998 $ 14,416 $ 18,745 $ 7,498 $ 12,031 $ 995 The following table presents quantitative information about Level 3 fair value measurements for fair value on a recurring basis as of the dates indicated (in thousands) . Fair Value Weighted Average Level 3 Assets and Liabilities September 30, December 31, 2018 Valuation Technique September 30, December 31, 2018 Unobservable Inputs Servicing rights for SBA/USDA loans $ 7,246 $ 7,510 Discounted cash flow Discount rate 11.8 % 14.5 % Prepayment rate 15.3 % 12.1 % Residential mortgage servicing rights 11,089 11,877 Discounted cash flow Discount rate 10.0 % 10.0 % Prepayment rate 15.8 % 10.6 % Corporate bonds 998 995 Indicative bid provided by a broker Multiple factors, including but not limited to, current operations, financial condition, cash flows, and recently executed financing transactions related to the company N/A N/A Derivative assets - mortgage 2,732 1,190 Internal model Pull through rate 83.3 % 80.7 % Derivative assets - other 3,511 10,651 Dealer priced Dealer priced N/A N/A Derivative liabilities - risk participations 14 8 Internal model Probable exposure rate 0.33 % 0.44 % Probability of default rate 1.80 % 1.80 % Derivative liabilities - other 6,699 15,724 Dealer priced Dealer priced N/A N/A Fair Value Option At September 30, 2019 , mortgage loans held for sale for which the fair value option was elected had an aggregate fair value and outstanding principal balance of $54.6 million and $53.1 million , respectively. At December 31, 2018 , mortgage loans held for sale for which the fair value option was elected had an aggregate fair value and outstanding principal balance of $18.9 million and $18.2 million , respectively. Interest income on these loans is calculated based on the note rate of the loan and is recorded in interest revenue. During the three and nine months ended September 30, 2019 , changes in fair value of these loans resulted in net losses of $2,000 and net gains of $873,000 , respectively. During the three and nine months ended September 30, 2018 , changes in fair value of these loans resulted in net losses of $412,000 and $157,000 , respectively. Gains and losses resulting from the change in fair value of these loans are recorded in mortgage loan and other related fees. These changes in fair value were mostly offset by hedging activities. An immaterial portion of these amounts was attributable to changes in instrument-specific credit risk. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis United may be required, from time to time, to measure certain assets at fair value on a nonrecurring basis. These adjustments to fair value usually result from the application of the lower of the amortized cost or fair value accounting or write-downs of individual assets due to impairment. The following table presents the fair value hierarchy and carrying value of all assets that were still held as of September 30, 2019 and December 31, 2018 , for which a nonrecurring fair value adjustment was recorded during the year-to-date periods presented (in thousands) . Level 1 Level 2 Level 3 Total September 30, 2019 Loans $ — $ — $ 9,119 $ 9,119 December 31, 2018 Loans $ — $ — $ 8,631 $ 8,631 Loans that are reported above as being measured at fair value on a nonrecurring basis are generally impaired loans that have either been partially charged off or have specific reserves assigned to them. Nonaccrual impaired loans that are collateral dependent are generally written down to 80% of appraised value which considers the estimated costs to sell. Specific reserves are established for impaired loans based on appraised value of collateral or discounted cash flows, although only those specific reserves based on the fair value of collateral are considered nonrecurring fair value adjustments. When the fair value of the collateral is based on an observable market price or a current appraised value, United records the impaired loan as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, United records the impaired loan as nonrecurring Level 3. Assets and Liabilities Not Measured at Fair Value For financial instruments that have quoted market prices, those quotes are used to determine fair value. Financial instruments that have no defined maturity, have a remaining maturity of 180 days or less, or reprice frequently to a market rate, are assumed to have a fair value that approximates reported book value, after taking into consideration any applicable credit risk. If no market quotes are available, financial instruments are valued by discounting the expected cash flows using an estimated current market interest rate for the financial instrument. For off-balance sheet derivative instruments, fair value is estimated as the amount that United would receive or pay to terminate the contracts at the reporting date, taking into account the current unrealized gains or losses on open contracts. Cash and cash equivalents and repurchase agreements have short maturities and therefore the carrying value approximates fair value. Due to the short-term settlement of accrued interest receivable and payable, the carrying amount closely approximates fair value. Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect the premium or discount on any particular financial instrument that could result from the sale of United’s entire holdings. All estimates are inherently subjective in nature. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing on and off-balance sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Significant assets and liabilities that are not considered financial instruments include the mortgage banking operation, brokerage network, deferred income taxes, premises and equipment and goodwill. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in the estimates. Off-balance sheet instruments (commitments to extend credit and standby letters of credit) for which draws can be reasonably predicted are generally short-term in maturity and are priced at variable rates. Therefore, the estimated fair value associated with these instruments is immaterial. The carrying amount and fair values as of the dates indicated for other financial instruments that are not measured at fair value on a recurring basis are as follows (in thousands) . Fair Value Level Carrying Amount Level 1 Level 2 Level 3 Total September 30, 2019 Assets: Securities held to maturity $ 243,028 $ — $ 248,546 $ — $ 248,546 Loans and leases, net 8,840,752 — — 8,804,331 8,804,331 Liabilities: Deposits 10,756,517 — 10,756,838 — 10,756,838 Federal Home Loan Bank advances 40,000 — 39,998 — 39,998 Long-term debt 240,245 — — 246,567 246,567 December 31, 2018 Assets: Securities held to maturity $ 274,407 $ — $ 268,803 $ — $ 268,803 Loans and leases, net 8,322,198 — — 8,277,387 8,277,387 Liabilities: Deposits 10,534,513 — 10,528,834 — 10,528,834 Federal Home Loan Bank advances 160,000 — 159,988 — 159,988 Long-term debt 267,189 — — 278,996 278,996

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies United is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and letters of credit. These instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the balance sheet. The contract amounts of these instruments reflect the extent of involvement United has in particular classes of financial instruments. The exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and letters of credit written is represented by the contractual amount of these instruments. United uses the same credit policies in making commitments and conditional obligations as it uses for underwriting on-balance sheet instruments. In most cases, collateral or other security is required to support financial instruments with credit risk. The following table summarizes the contractual amount of off-balance sheet instruments as of the dates indicated (in thousands) . September 30, 2019 December 31, 2018 Financial instruments whose contract amounts represent credit risk: Commitments to extend credit $ 2,138,428 $ 2,129,463 Letters of credit 29,652 25,447 United’s wholly-owned bank subsidiary, United Community Bank (the “Bank”), holds minor investments in certain limited partnerships for Community Reinvestment Act purposes. As of September 30, 2019 , the Bank had committed to fund an additional $6.87 million related to future capital calls that had not been reflected in the consolidated balance sheet. United, in the normal course of business, is subject to various pending and threatened lawsuits in which claims for monetary damages are asserted. Although it is not possible to predict the outcome of these lawsuits, or the range of any possible loss, management, after consultation with legal counsel, does not anticipate that the ultimate aggregate liability, if any, arising from these lawsuits will have a material adverse effect on United’s financial position or results of operations.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The carrying amount of goodwill and other intangible assets as of the dates indicated is summarized below (in thousands) : September 30, 2019 December 31, 2018 Core deposit intangible $ 65,452 $ 62,652 Less: accumulated amortization (49,537 ) (46,141 ) Net core deposit intangible 15,915 16,511 Noncompete agreements 3,144 3,144 Less: accumulated amortization (3,144 ) (2,695 ) Net noncompete agreements — 449 Total intangibles subject to amortization, net 15,915 16,960 Goodwill 327,425 307,112 Total goodwill and other intangible assets, net $ 343,340 $ 324,072 The following is a summary of changes in the carrying amounts of goodwill (in thousands) : Three Months Ended September 30, Nine Months Ended September 30, 2019 Goodwill Accumulated Impairment Losses Goodwill, net of Accumulated Impairment Losses Goodwill Accumulated Impairment Losses Goodwill, net of Accumulated Impairment Losses Balance, beginning of period $ 633,015 $ (305,590 ) $ 327,425 $ 612,702 $ (305,590 ) $ 307,112 Acquisition of FMBT — — — 20,313 — 20,313 Balance, end of period $ 633,015 $ (305,590 ) $ 327,425 $ 633,015 $ (305,590 ) $ 327,425 2018 Balance, beginning of period $ 612,702 $ (305,590 ) $ 307,112 $ 526,181 $ (305,590 ) $ 220,591 Acquisition of Navitas — — — 87,379 — 87,379 Measurement period adjustments (1) — — — (858 ) — (858 ) Balance, end of period $ 612,702 $ (305,590 ) $ 307,112 $ 612,702 $ (305,590 ) $ 307,112 (1) Measurement period adjustments for the nine months ended September 30, 2018, were related to Four Oaks Fincorp, Inc. and HCSB Financial Corporation. The estimated aggregate amortization expense for future periods for core deposit intangibles is as follows (in thousands) : Year Remainder of 2019 $ 1,093 2020 3,842 2021 3,019 2022 2,379 2023 1,852 Thereafter 3,730 Total $ 15,915

Operating Leases

Operating Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Operating Leases	Operating Leases United’s leases for which it is the lessee consist of operating leases for land, buildings, and equipment. Payments related to these leases consist primarily of base rent and, in the case of building leases, additional operating costs associated with the leased property such as common area maintenance and utilities. In most cases these operating costs vary over the term of the lease, and therefore are classified as variable lease costs, which are recognized as incurred in the consolidated statement of income. In addition, certain operating leases include costs such as property taxes and insurance, which are recognized as incurred in the consolidated statement of income. Many of United’s operating leases contain renewal options, most of which are excluded from the measurement of the right-of-use asset and lease liability as they are not reasonably certain to be exercised. United also subleases and leases certain real estate properties to third parties under operating leases. As of September 30, 2019 , United had a right-of-use asset and lease liability of $21.0 million and $23.3 million , respectively, included in other assets and other liabilities, respectively, on the balance sheet. The table below presents the operating lease income and expense recognized for the periods indicated (in thousands) . Income Statement Location Three Months Ended September 30, 2019 Nine Months Ended Operating lease cost Occupancy expense $ 1,272 $ 3,783 Variable lease cost Occupancy expense 112 336 Short-term lease cost Occupancy expense 52 92 Total lease cost $ 1,436 $ 4,211 Sublease income and rental income from owned properties under operating leases Other noninterest income $ 261 886 As of September 30, 2019 , the weighted average remaining lease term and weighted average discount rate of operating leases was 5.51 years and 2.79% , respectively. Absent a readily determinable interest rate in the lease agreement, the discount rate applied to each individual lease obligation was the Bank’s incremental borrowing rate for secured borrowings. As of September 30, 2019 , future minimum lease payments under operating leases were as follows (in thousands) : Year Remainder of 2019 $ 939 2020 5,394 2021 5,124 2022 4,694 2023 3,992 Thereafter 5,092 Total 25,235 Less discount (1,963 ) Present value of lease liability $ 23,272 As discussed in Note 2, United adopted Topic 842 using the modified retrospective method with a cumulative effect adjustment to shareholders’ equity without restating comparable periods. As a result, disclosures for comparative periods under the predecessor standard, ASC 840, Leases , are required in the year of transition. As of December 31, 2018, rent commitments under operating leases were $5.35 million , $5.16 million , $4.91 million , $4.48 million , and $3.91 million , for 2019 through 2023, respectively, and $5.04 million

Termination of Defined Benefit

Termination of Defined Benefit Plan (Notes)	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Termination of Defined Benefit Plan	Termination of Defined Benefit Plan During the third quarter of 2019, United materially settled the liabilities of its funded noncontributory defined benefit pension plan (“Funded Plan”). Participants elected to receive either lump sum distributions or annuity contracts purchased from a third party insurance company that provided for the payment of vested benefits. United contributed $4.90 million to the Funded Plan in the third quarter of 2019 to fund its liquidation. As a result of the pension termination, unrecognized losses of $1.56 million , which previously were recorded in accumulated other comprehensive income (loss) on the consolidated balance sheets, were recognized as expense and an additional pension plan settlement loss of $1.38 million was recorded in the consolidated statements of income. Including both charges, the total Funded Plan settlement loss was $2.94 million , which was included in merger-related and other charges for the three and nine months ended September 30, 2019.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On November 7, 2019 , United’s Board of Directors approved a regular quarterly cash dividend of $0.18 per common share. The dividend is payable January 6, 2020 , to shareholders of record on December 16, 2019 .

Accounting Policies (Policies)

Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation and Consolidation	The accounting and financial reporting policies of United Community Banks, Inc. and its subsidiaries (collectively referred to herein as “United”) conform to accounting principles generally accepted in the United States (“GAAP”) and reporting guidelines of banking regulatory authorities and regulators. The accompanying interim consolidated financial statements have not been audited. All material intercompany balances and transactions have been eliminated. A more detailed description of United’s accounting policies is included in its Annual Report on Form 10-K for the year ended December 31, 2018 (the “2018 10-K”).
Accounting Standards Updates and Recently Adopted Standards	Accounting Standards Updates and Recently Adopted Standards Accounting Standards Updates In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . This guidance was further modified in November 2018 by ASU No. 2018-19, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, in April 2019 by ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825 Financial Instruments and in May 2019 by ASU No. 2019-05, Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief. The new guidance replaces the incurred loss impairment methodology in current GAAP with a current expected credit loss (“CECL”) methodology, requires consideration of a broader range of information to determine credit loss estimates and generally applies to financial assets measured at amortized cost and some off-balance sheet credit exposures. Financial assets measured at amortized cost will be presented at the net amount expected to be collected by using an allowance for credit losses. Purchased credit deteriorated (“PCD”) loans will receive an allowance account at the acquisition date that represents a component of the purchase price allocation. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses, with such allowance limited to the amount by which fair value is below amortized cost. Application of this update will primarily be on a modified retrospective approach, although the guidance for debt securities for which an other-than-temporary impairment has been recognized before the effective date and for loans previously covered by Accounting Standards Codification 310-30 (“ASC 310-30”), Receivables – Loans and Debt Securities Acquired with Deteriorated Credit Quality will be applied on a prospective basis. For public entities, this update is effective for fiscal years beginning after December 15, 2019. Upon adoption, United expects that the allowance for credit losses will be higher given the change to estimated losses for the estimated life of the financial asset; however, management is still in the process of determining the impact. During the third quarter of 2019, management’s CECL steering committee analyzed the results of ongoing parallel runs for both securities held to maturity and loans and continued to monitor the impact of various model assumptions in order to improve the precision of the model. The committee remains focused on developing its CECL policy, procedures, and internal control structure in preparation for adoption of Topic 326. During the remainder of the pre-adoption period, management will run additional parallel runs of the allowance model under the expected credit loss methodology. During monthly steering committee meetings, management regularly reviews project status, gap remediation efforts and project priorities. As referenced above, in April 2019, the FASB issued ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825 Financial Instruments . In addition to amending guidance related to the new CECL standard, this update clarifies certain aspects of hedge accounting and recognition and measurement of financial instruments. The non-CECL provisions of this update are effective for United as of January 1, 2020. United does not expect the new guidance to have a material impact on the consolidated financial statements. Recently Adopted Standards In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) . This guidance was further modified by ASU No. 2018-10, Codification Improvements to Topic 842 Leases , ASU No. 2018-11, Leases (Topic 842): Targeted Improvements , ASU No. 2018-20, Leases (Topic 842): Narrow-Scope Improvements for Lessors and ASU No. 2019-01, Leases (Topic 842): Codification Improvements . These standards require a lessee to recognize in the consolidated balance sheet a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. United adopted the standard on January 1, 2019 using the optional transition method, which allowed for a modified retrospective method of adoption with a cumulative effect adjustment to shareholders’ equity without restating comparable periods. United also elected the relief package of practical expedients for which there is no requirement to reassess existence of leases, their classification, and initial direct costs as well as an exemption for short-term leases with a term of less than one year, whereby United does not recognize a lease liability or right-of-use asset on the consolidated balance sheet but instead recognizes lease payments as an expense over the lease term as appropriate. The adoption of this guidance resulted in recognition of a right-of-use asset of $23.8 million , a lease liability of $26.8 million and a reduction of shareholders’ equity of $549,000 , net of tax, related to its operating leases. In addition, United has equipment financing leases for which it is the lessor, which were previously accounted for as capital leases. Upon adoption of Topic 842, these leases were classified as sales-type or direct financing leases, which required no significant change in accounting policy or treatment. These lease agreements may include options to renew and for the lessee to purchase the leased equipment at the end of the lease term. As a lessor, United elected to exclude sales taxes from consideration in lease contracts. In the opinion of management, the changes described above resulting from the adoption of the standard did not have a material impact on the consolidated financial statements. See Notes 6 and 16 for additional information on equipment financing leases and operating leases, respectively. In July of 2019, the FASB issued ASU No. 2019-07, Codification updates to SEC sections: amendments to SEC paragraphs pursuant to SEC final rule releases No. 33-10532, disclosure update and simplification, and nos. 33-10231 and 33-10442, investment company reporting modernization, and miscellaneous updates. This standard updates various SEC financial statement disclosure requirements, including disclosures related to bank holding companies. The standard is effective immediately, and United does not expect the new guidance to have a material impact on its disclosures.

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Schedule of purchased assets and assumed liabilities	The purchased assets and assumed liabilities were recorded at their acquisition date fair values and are summarized in the table below (in thousands) . As Recorded by Fair Value Adjustments (1) As Recorded by United Assets Cash and cash equivalents $ 32,548 — $ 32,548 Loans 197,682 (5,188 ) 192,494 Allowance for loan losses (6,338 ) 6,338 — Premises and equipment, net 7,124 1,400 8,524 Bank owned life insurance 6,823 — 6,823 Net deferred tax asset 1,386 (1,229 ) 157 Core deposit intangible — 2,800 2,800 Other assets 1,032 246 1,278 Total assets acquired $ 240,257 $ 4,367 $ 244,624 Liabilities Deposits $ 211,884 $ 243 $ 212,127 Other liabilities 924 (207 ) 717 Total liabilities assumed 212,808 36 212,844 Excess of assets acquired over liabilities assumed $ 27,449 Aggregate fair value adjustments $ 4,331 Total identifiable net assets 31,780 Cash consideration transferred 52,093 Goodwill $ 20,313 (1) Fair values are preliminary and are subject to refinement for a period not to exceed one year after the closing date of an acquisition as information relative to closing date fair values becomes available.
Schedule of additional information related to acquired loan portfolio at acquisition date	The following table presents additional information related to the acquired loan portfolio at the acquisition date (in thousands) : May 1, 2019 Accounted for pursuant to ASC 310-30: Contractually required principal and interest $ 13,145 Non-accretable difference 2,517 Cash flows expected to be collected 10,628 Accretable yield 1,300 Fair value $ 9,328 Excluded from ASC 310-30: Fair value $ 183,166 Gross contractual amounts receivable 218,855 Estimate of contractual cash flows not expected to be collected 8,826
Schedule of actual results and pro forma information	Merger-related costs from the FMBT acquisition of $756,000 and $1.78 million , respectively, have been excluded from the three and nine months 2019 pro forma information presented below and included in the three and nine months 2018 pro forma information below. Merger-related costs from the Navitas acquisition of $103,000 and $4.93 million , respectively, have been excluded from the three and nine months 2018 pro forma information presented below. The actual results and pro forma information were as follows (in thousands) : Three Months Ended Nine Months Ended Revenue Net Income Revenue Net Income 2019 Actual FMBT results included in statement of income since acquisition date $ 2,697 $ 1,403 $ 5,024 $ 2,590 Supplemental consolidated pro forma as if FMBT had been acquired January 1, 2018 144,881 48,653 420,872 138,157 2018 Actual Navitas results included in statement of income since acquisition date $ 7,006 $ 1,884 $ 17,243 $ 5,380 Supplemental consolidated pro forma as if FMBT had been acquired January 1, 2018 and Navitas had been acquired January 1, 2017 138,036 44,846 399,692 124,599

Balance Sheet Offsetting and _2

Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings (Tables)	9 Months Ended
	Sep. 30, 2019
Offsetting [Abstract]
Schedule of summary of amounts outstanding under reverse repurchase agreements	The following table presents a summary of amounts outstanding under reverse repurchase agreements, of which there were none as of September 30, 2019 , and derivative financial instruments including those entered into in connection with the same counterparty under master netting agreements as of the dates indicated (in thousands). Gross Amounts of Recognized Assets Gross Amounts Offset on the Balance Sheet Gross Amounts not Offset in the Balance Sheet September 30, 2019 Net Asset Balance Financial Instruments Collateral Received Net Amount Derivatives $ 43,755 $ — $ 43,755 $ (122 ) $ — $ 43,633 Total $ 43,755 $ — $ 43,755 $ (122 ) $ — $ 43,633 Gross Amounts of Recognized Liabilities Gross Amounts Offset on the Balance Sheet Net Liability Balance Gross Amounts not Offset in the Balance Sheet Financial Instruments Collateral Pledged Net Amount Derivatives $ 16,244 $ — $ 16,244 $ (122 ) $ (16,316 ) $ — Total $ 16,244 $ — $ 16,244 $ (122 ) $ (16,316 ) $ — Gross Amounts of Recognized Assets Gross Amounts Offset on the Balance Sheet Gross Amounts not Offset in the Balance Sheet December 31, 2018 Net Asset Balance Financial Instruments Collateral Received Net Amount Repurchase agreements / reverse repurchase agreements $ 50,000 $ (50,000 ) $ — $ — $ — $ — Derivatives 24,705 — 24,705 (973 ) (8,029 ) 15,703 Total $ 74,705 $ (50,000 ) $ 24,705 $ (973 ) $ (8,029 ) $ 15,703 Weighted average interest rate of reverse repurchase agreements 3.20 % Gross Amounts of Recognized Liabilities Gross Amounts Offset on the Balance Sheet Gross Amounts not Offset in the Balance Sheet Net Liability Balance Financial Instruments Collateral Pledged Net Amount Repurchase agreements / reverse repurchase agreements $ 50,000 $ (50,000 ) $ — $ — $ — $ — Derivatives 26,433 — 26,433 (973 ) (16,126 ) 9,334 Total $ 76,433 $ (50,000 ) $ 26,433 $ (973 ) $ (16,126 ) $ 9,334 Weighted average interest rate of repurchase agreements 2.45 %
Schedule of repurchase agreements remaining contractual maturity of the agreements	The following table presents additional detail regarding repurchase agreements accounted for as secured borrowings and the securities underlying these agreements as of December 31, 2018 (in thousands) . Remaining Contractual Maturity of the Agreements Overnight and Continuous Up to 30 Days 30 to 90 Days 91 to 110 days Total Mortgage-backed securities $ — $ — $ 50,000 $ — $ 50,000 Total $ — $ — $ 50,000 $ — $ 50,000 Gross amount of recognized liabilities for repurchase agreements in offsetting disclosure $ 50,000 Amounts related to agreements not included in offsetting disclosure $ —

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Schedule of cost basis, gross unrealized gains and losses and fair value of securities held to maturity	The amortized cost basis, unrealized gains and losses and fair value of debt securities held-to-maturity as of the dates indicated are as follows (in thousands) . Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value As of September 30, 2019 State and political subdivisions $ 61,251 $ 3,308 $ — $ 64,559 Residential mortgage-backed securities 163,603 2,532 597 165,538 Commercial mortgage-backed securities 18,174 331 56 18,449 Total $ 243,028 $ 6,171 $ 653 $ 248,546 As of December 31, 2018 State and political subdivisions $ 68,551 $ 952 $ 2,191 $ 67,312 Residential mortgage-backed securities 176,488 652 5,094 172,046 Commercial mortgage-backed securities 29,368 173 96 29,445 Total $ 274,407 $ 1,777 $ 7,381 $ 268,803
Schedule of cost basis, unrealized gains and losses, and fair value of securities available for sale	The cost basis, unrealized gains and losses, and fair value of debt securities available-for-sale as of the dates indicated are presented below (in thousands) . Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value As of September 30, 2019 U.S. Treasuries $ 152,759 $ 1,873 $ — $ 154,632 U.S. Government agencies 2,972 203 — 3,175 State and political subdivisions 215,159 12,166 — 227,325 Residential mortgage-backed securities 1,236,101 22,154 1,622 1,256,633 Commercial mortgage-backed securities 318,815 3,783 133 322,465 Corporate bonds 200,246 1,291 342 201,195 Asset-backed securities 106,729 762 870 106,621 Total $ 2,232,781 $ 42,232 $ 2,967 $ 2,272,046 As of December 31, 2018 U.S. Treasuries $ 150,712 $ 767 $ 2,172 $ 149,307 U.S. Government agencies 25,493 335 275 25,553 State and political subdivisions 234,750 907 1,716 233,941 Residential mortgage-backed securities 1,464,380 3,428 21,898 1,445,910 Commercial mortgage-backed securities 399,663 187 7,933 391,917 Corporate bonds 200,582 502 1,921 199,163 Asset-backed securities 184,683 328 2,335 182,676 Total $ 2,660,263 $ 6,454 $ 38,250 $ 2,628,467
Schedule of held to maturity securities in an unrealized loss position	The following table summarizes debt securities held-to-maturity in an unrealized loss position as of the dates indicated ( in thousands) . Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss As of September 30, 2019 Residential mortgage-backed securities $ 2,597 $ 12 $ 55,776 $ 585 $ 58,373 $ 597 Commercial mortgage-backed securities — — 1,900 56 1,900 56 Total unrealized loss position $ 2,597 $ 12 $ 57,676 $ 641 $ 60,273 $ 653 As of December 31, 2018 State and political subdivisions $ 7,062 $ 46 $ 34,146 $ 2,145 $ 41,208 $ 2,191 Residential mortgage-backed securities 6,579 61 136,376 5,033 142,955 5,094 Commercial mortgage-backed securities — — 4,290 96 4,290 96 Total unrealized loss position $ 13,641 $ 107 $ 174,812 $ 7,274 $ 188,453 $ 7,381
Schedule of available for sale securities in an unrealized loss position	The following table summarizes debt securities available-for-sale in an unrealized loss position as of the dates indicated (in thousands) . Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss As of September 30, 2019 Residential mortgage-backed securities $ 72,466 $ 603 $ 111,223 $ 1,019 $ 183,689 $ 1,622 Commercial mortgage-backed securities — — 37,111 133 37,111 133 Corporate bonds 19,820 114 15,772 228 35,592 342 Asset-backed securities 64,608 867 1,233 3 65,841 870 Total unrealized loss position $ 156,894 $ 1,584 $ 165,339 $ 1,383 $ 322,233 $ 2,967 As of December 31, 2018 U.S. Treasuries $ — $ — $ 120,391 $ 2,172 $ 120,391 $ 2,172 U.S. Government agencies — — 21,519 275 21,519 275 State and political subdivisions 15,160 28 133,500 1,688 148,660 1,716 Residential mortgage-backed securities 234,583 808 775,360 21,090 1,009,943 21,898 Commercial mortgage-backed securities 4,552 594 355,292 7,339 359,844 7,933 Corporate bonds — — 117,296 1,921 117,296 1,921 Asset-backed securities 74,492 1,879 31,968 456 106,460 2,335 Total unrealized loss position $ 328,787 $ 3,309 $ 1,555,326 $ 34,941 $ 1,884,113 $ 38,250
Schedule of summary of securities sales activities	The following table summarizes available-for-sale securities sales activity for the three and nine months ended September 30, 2019 and 2018 (in thousands) . Three Months Ended Nine Months Ended 2019 2018 2019 2018 Proceeds from sales $ — $ 16,383 $ 225,883 $ 156,679 Gross gains on sales $ — $ 176 $ 1,776 $ 825 Gross losses on sales — (174 ) (1,894 ) (2,127 ) Net gains (losses) on sales of securities $ — $ 2 $ (118 ) $ (1,302 ) Income tax expense (benefit) attributable to sales $ — $ 5 $ (30 ) $ (312 )
Schedule of amortized cost and fair value of available for sale and held to maturity securities by contractual maturity	The amortized cost and fair value of debt securities available-for-sale and held-to-maturity at September 30, 2019 , by contractual maturity, are presented in the following table (in thousands) . Available-for-Sale Held-to-Maturity Amortized Cost Fair Value Amortized Cost Fair Value U.S. Treasuries: Within 1 year $ 29,786 $ 29,887 $ — $ — 1 to 5 years 122,973 124,745 — — 152,759 154,632 — — U.S. Government agencies: 1 to 5 years 406 406 — — More than 10 years 2,566 2,769 — — 2,972 3,175 — — State and political subdivisions: Within 1 year 935 943 1,350 1,376 1 to 5 years 54,107 55,437 10,764 11,322 5 to 10 years 16,339 17,222 7,202 8,047 More than 10 years 143,778 153,723 41,935 43,814 215,159 227,325 61,251 64,559 Corporate bonds: Within 1 year 120,046 120,176 — — 1 to 5 years 77,700 78,475 — — 5 to 10 years 1,500 1,546 — — More than 10 years 1,000 998 — — 200,246 201,195 — — Asset-backed securities: 1 to 5 years 1,754 1,746 — — More than 10 years 104,975 104,875 — — 106,729 106,621 — — Total securities other than mortgage-backed securities: Within 1 year 150,767 151,006 1,350 1,376 1 to 5 years 256,940 260,809 10,764 11,322 5 to 10 years 17,839 18,768 7,202 8,047 More than 10 years 252,319 262,365 41,935 43,814 Residential mortgage-backed securities 1,236,101 1,256,633 163,603 165,538 Commercial mortgage-backed securities 318,815 322,465 18,174 18,449 $ 2,232,781 $ 2,272,046 $ 243,028 $ 248,546

Loans and Leases and Allowanc_2

Loans and Leases and Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Schedule of major classifications of loans and lease portfolio	Major classifications of the loan and lease portfolio (collectively referred to as the “loan portfolio” or “loans”) are summarized as of the dates indicated as follows (in thousands) . September 30, 2019 December 31, 2018 Owner occupied commercial real estate $ 1,692,010 $ 1,647,904 Income producing commercial real estate 1,933,868 1,812,420 Commercial & industrial 1,271,243 1,278,347 Commercial construction 1,000,801 796,158 Equipment financing 729,506 564,614 Total commercial 6,627,428 6,099,443 Residential mortgage 1,120,828 1,049,232 Home equity lines of credit 668,987 694,010 Residential construction 229,352 211,011 Consumer direct 125,517 122,013 Indirect auto 131,154 207,692 Total loans 8,903,266 8,383,401 Less allowance for loan losses (62,514 ) (61,203 ) Loans, net $ 8,840,752 $ 8,322,198
Schedule of changes in the value of the accretable yield for acquired loans accounted	The following table presents changes in the balance of the accretable yield for PCI loans for the periods indicated (in thousands) : Three Months Ended Nine Months Ended 2019 2018 2019 2018 Balance at beginning of period $ 26,308 $ 23,406 $ 26,868 $ 17,686 Additions due to acquisitions — — 1,300 1,977 Accretion (4,950 ) (3,773 ) (14,037 ) (9,284 ) Reclassification from nonaccretable difference 1,159 3,018 5,627 10,136 Changes in expected cash flows that do not affect nonaccretable difference 329 2,027 3,088 4,163 Balance at end of period $ 22,846 $ 24,678 $ 22,846 $ 24,678
Schedule of net investment in leases	At September 30, 2019 and December 31, 2018 , equipment financing assets included leases of $39.5 million and $30.4 million , respectively. The components of the net investment in leases, which included both sales-type and direct financing, are presented below (in thousands) . September 30, 2019 December 31, 2018 Minimum future lease payments receivable $ 42,176 $ 31,915 Estimated residual value of leased equipment 3,749 3,593 Initial direct costs 936 827 Security deposits (1,091 ) (1,189 ) Purchase accounting premium 379 806 Unearned income (6,630 ) (5,568 ) Net investment in leases $ 39,519 $ 30,384
Schedule of minimum future lease payments received from lease contracts	Minimum future lease payments expected to be received from equipment financing lease contracts as of September 30, 2019 are as follows (in thousands) : Year Remainder of 2019 $ 4,048 2020 14,455 2021 10,740 2022 7,131 2023 4,226 Thereafter 1,576 Total $ 42,176
Schedule of balance and activity in the allowance for credit losses by portfolio segment	The following table presents the balance and activity in the allowance for credit losses by portfolio segment for the periods indicated (in thousands) . 2019 2018 Three Months Ended September 30, Beginning Balance Charge-Offs Recoveries (Release)Provision Ending Balance Beginning Balance Charge-Offs Recoveries (Release) Provision Ending Balance Owner occupied commercial real estate $ 11,545 $ — $ 39 $ (165 ) $ 11,419 $ 12,909 $ — $ 251 $ (706 ) $ 12,454 Income producing commercial real estate 11,020 (472 ) 41 473 11,062 10,862 (375 ) 375 220 11,082 Commercial & industrial 5,308 (898 ) 207 773 5,390 4,205 (660 ) 242 568 4,355 Commercial construction 10,318 — 247 (158 ) 10,407 10,123 (24 ) 66 (293 ) 9,872 Equipment financing 6,935 (1,376 ) 202 1,485 7,246 3,561 (700 ) 218 1,141 4,220 Residential mortgage 8,290 (264 ) 106 82 8,214 9,845 (235 ) 66 70 9,746 Home equity lines of credit 4,794 (287 ) 204 (28 ) 4,683 4,943 (426 ) 147 174 4,838 Residential construction 2,365 (13 ) 18 181 2,551 2,590 (32 ) 195 (382 ) 2,371 Consumer direct 855 (645 ) 226 441 877 765 (643 ) 244 474 840 Indirect auto 774 (125 ) 67 (51 ) 665 1,268 (228 ) 53 69 1,162 Total allowance for loan losses 62,204 (4,080 ) 1,357 3,033 62,514 61,071 (3,323 ) 1,857 1,335 60,940 Allowance for unfunded commitments 3,391 — — 67 3,458 2,895 — — 465 3,360 Total allowance for credit losses $ 65,595 $ (4,080 ) $ 1,357 $ 3,100 $ 65,972 $ 63,966 $ (3,323 ) $ 1,857 $ 1,800 $ 64,300 2019 2018 Nine Months Ended September 30, Beginning Balance Charge-Offs Recoveries (Release) Provision Ending Balance Beginning Charge- Recoveries (Release) Ending Owner occupied commercial real estate $ 12,207 $ (5 ) $ 166 $ (949 ) $ 11,419 $ 14,776 $ (67 ) $ 939 $ (3,194 ) $ 12,454 Income producing commercial real estate 11,073 (977 ) 127 839 11,062 9,381 (2,685 ) 842 3,544 11,082 Commercial & industrial 4,802 (3,833 ) 645 3,776 5,390 3,971 (1,277 ) 848 813 4,355 Commercial construction 10,337 (70 ) 804 (664 ) 10,407 10,523 (440 ) 322 (533 ) 9,872 Equipment financing 5,452 (3,810 ) 466 5,138 7,246 — (862 ) 386 4,696 4,220 Residential mortgage 8,295 (433 ) 388 (36 ) 8,214 10,097 (417 ) 290 (224 ) 9,746 Home equity lines of credit 4,752 (653 ) 466 118 4,683 5,177 (761 ) 372 50 4,838 Residential construction 2,433 (263 ) 91 290 2,551 2,729 (40 ) 326 (644 ) 2,371 Consumer direct 853 (1,721 ) 672 1,073 877 710 (1,846 ) 599 1,377 840 Indirect auto 999 (502 ) 151 17 665 1,550 (1,043 ) 188 467 1,162 Total allowance for loan losses 61,203 (12,267 ) 3,976 9,602 62,514 58,914 (9,438 ) 5,112 6,352 60,940 Allowance for unfunded commitments 3,410 — — 48 3,458 2,312 — — 1,048 3,360 Total allowance for credit losses $ 64,613 $ (12,267 ) $ 3,976 $ 9,650 $ 65,972 $ 61,226 $ (9,438 ) $ 5,112 $ 7,400 $ 64,300 The following tables represent the recorded investment in loans by portfolio segment and the balance of the allowance for loan losses assigned to each segment based on the method of evaluating the loans for impairment as of the dates indicated (in thousands) . Allowance for Credit Losses September 30, 2019 December 31, 2018 Individually Collectively evaluated for impairment PCI Ending Balance Individually Collectively evaluated for impairment PCI Ending Balance Owner occupied commercial real estate $ 859 $ 10,446 $ 114 $ 11,419 $ 862 $ 11,328 $ 17 $ 12,207 Income producing commercial real estate 261 10,737 64 11,062 402 10,671 — 11,073 Commercial & industrial 33 5,305 52 5,390 32 4,761 9 4,802 Commercial construction 49 10,248 110 10,407 71 9,974 292 10,337 Equipment financing — 7,149 97 7,246 — 5,045 407 5,452 Residential mortgage 808 7,392 14 8,214 861 7,410 24 8,295 Home equity lines of credit 16 4,648 19 4,683 1 4,740 11 4,752 Residential construction 51 2,472 28 2,551 51 2,382 — 2,433 Consumer direct 5 872 — 877 6 847 — 853 Indirect auto 41 624 — 665 26 973 — 999 Total allowance for loan losses 2,123 59,893 498 62,514 2,312 58,131 760 61,203 Allowance for unfunded commitments — 3,458 — 3,458 — 3,410 — 3,410 Total allowance for credit losses $ 2,123 $ 63,351 $ 498 $ 65,972 $ 2,312 $ 61,541 $ 760 $ 64,613 Loans Outstanding September 30, 2019 December 31, 2018 Individually Collectively evaluated for impairment PCI Ending Balance Individually evaluated for impairment Collectively evaluated for impairment PCI Ending Balance Owner occupied commercial real estate $ 18,562 $ 1,663,913 $ 9,535 $ 1,692,010 $ 17,602 $ 1,620,450 $ 9,852 $ 1,647,904 Income producing commercial real estate 10,748 1,886,317 36,803 1,933,868 16,584 1,757,525 38,311 1,812,420 Commercial & industrial 2,068 1,268,815 360 1,271,243 1,621 1,276,318 408 1,278,347 Commercial construction 3,287 990,513 7,001 1,000,801 2,491 787,760 5,907 796,158 Equipment financing 111 724,664 4,731 729,506 — 556,672 7,942 564,614 Residential mortgage 16,672 1,095,179 8,977 1,120,828 14,220 1,025,862 9,150 1,049,232 Home equity lines of credit 300 667,286 1,401 668,987 276 692,122 1,612 694,010 Residential construction 1,283 227,564 505 229,352 1,207 209,070 734 211,011 Consumer direct 198 124,939 380 125,517 211 121,269 533 122,013 Indirect auto 1,043 130,111 — 131,154 1,237 206,455 — 207,692 Total loans $ 54,272 $ 8,779,301 $ 69,693 $ 8,903,266 $ 55,449 $ 8,253,503 $ 74,449 $ 8,383,401
Schedule of recorded investments in individually evaluated impaired loans	The following table presents loans individually evaluated for impairment by class as of the dates indicated (in thousands) . September 30, 2019 December 31, 2018 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated With no related allowance recorded: Owner occupied commercial real estate $ 9,225 $ 7,107 $ — $ 8,650 $ 6,546 $ — Income producing commercial real estate 5,363 5,164 — 9,986 9,881 — Commercial & industrial 1,297 1,037 — 525 370 — Commercial construction 1,716 1,607 — 685 507 — Equipment financing 111 111 — — — — Total commercial 17,712 15,026 — 19,846 17,304 — Residential mortgage 7,666 6,808 — 5,787 5,202 — Home equity lines of credit 275 213 — 330 234 — Residential construction 790 658 — 554 428 — Consumer direct 28 28 — 18 17 — Indirect auto 236 223 — 294 292 — Total with no related allowance recorded 26,707 22,956 — 26,829 23,477 — With an allowance recorded: Owner occupied commercial real estate 11,509 11,455 859 11,095 11,056 862 Income producing commercial real estate 5,968 5,584 261 6,968 6,703 402 Commercial & industrial 1,200 1,031 33 1,652 1,251 32 Commercial construction 1,826 1,680 49 2,130 1,984 71 Equipment financing — — — — — — Total commercial 20,503 19,750 1,202 21,845 20,994 1,367 Residential mortgage 9,922 9,864 808 9,169 9,018 861 Home equity lines of credit 89 87 16 45 42 1 Residential construction 637 625 51 791 779 51 Consumer direct 171 170 5 199 194 6 Indirect auto 820 820 41 946 945 26 Total with an allowance recorded 32,142 31,316 2,123 32,995 31,972 2,312 Total $ 58,849 $ 54,272 $ 2,123 $ 59,824 $ 55,449 $ 2,312
Schedule of TDRs including the number of loan contracts restructured and the pre- and post-modification recorded investment	Loans modified under the terms of a TDR during the three and nine months ended September 30, 2019 and 2018 are presented in the following table. In addition, the table presents loans modified under the terms of a TDR that defaulted (became 90 days or more delinquent) during the periods presented and were initially restructured within one year prior to default (dollars in thousands) . New TDRs Pre-modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment by Type of Modification TDRs Modified Within the Previous Twelve Months That Have Subsequently Defaulted Number of Contracts Rate Reduction Structure Other Total Number of Contracts Recorded Investment Three Months Ended September 30, 2019 Owner occupied commercial real estate — $ — $ — $ — $ — $ — — $ — Income producing commercial real estate — — — — — — — — Commercial & industrial — — — — — — — — Commercial construction — — — — — — — — Equipment financing 2 93 — 93 — 93 — — Total commercial 2 93 — 93 — 93 — — Residential mortgage 2 609 — 609 — 609 — — Home equity lines of credit — — — — — — — — Residential construction — — — — — — — — Consumer direct 3 21 — — 21 21 — — Indirect auto 4 101 — — 101 101 — — Total loans 11 $ 824 $ — $ 702 $ 122 $ 824 — $ — Nine Months Ended September 30, 2019 Owner occupied commercial real estate 2 $ 610 $ — $ 610 $ — $ 610 — $ — Income producing commercial real estate 1 169 — 169 — 169 — — Commercial & industrial 1 7 — — 7 7 — — Commercial construction — — — — — — — — Equipment financing 3 113 — 113 — 113 — — Total commercial 7 899 — 892 7 899 — — Residential mortgage 11 1,785 — 1,784 — 1,784 1 135 Home equity lines of credit 1 50 — 50 — 50 — — Residential construction 1 22 — — 21 21 1 13 Consumer direct 3 21 — — 21 21 — — Indirect auto 15 271 — — 262 262 — — Total loans 38 $ 3,048 $ — $ 2,726 $ 311 $ 3,037 2 $ 148 Three Months Ended September 30, 2018 Owner occupied commercial real estate — $ — $ — $ — $ — $ — — $ — Income producing commercial real estate 1 3,647 — 3,637 — 3,637 — — Commercial & industrial — — — — — — — — Commercial construction — — — — — — — — Equipment financing — — — — — — — — Total commercial 1 3,647 — 3,637 — 3,637 — — Residential mortgage 4 421 — 395 — 395 — — Home equity lines of credit — — — — — — — — Residential construction — — — — — — — — Consumer direct — — — — — — — — Indirect auto 9 188 — — 188 188 — — Total loans 14 $ 4,256 $ — $ 4,032 $ 188 $ 4,220 — $ — Nine Months Ended September 30, 2018 Owner occupied commercial real estate 4 $ 1,276 $ — $ 1,260 $ — $ 1,260 3 $ 1,869 Income producing commercial real estate 2 3,753 106 3,637 — 3,743 — — Commercial & industrial 2 108 — 32 — 32 — — Commercial construction — — — — — — 1 3 Equipment financing — — — — — — — — Total commercial 8 5,137 106 4,929 — 5,035 4 1,872 Residential mortgage 8 1,186 — 1,159 — 1,159 1 101 Home equity lines of credit — — — — — — — — Residential construction — — — — — — — — Consumer direct — — — — — — — — Indirect auto 26 424 — — 424 424 — — Total loans 42 $ 6,747 $ 106 $ 6,088 $ 424 $ 6,618 5 $ 1,973
Schedule of average balances of impaired loans and income recognized on impaired loans	The average balances of impaired loans and income recognized on impaired loans while they were considered impaired are presented below for the periods indicated (in thousands) . 2019 2018 Three Months Ended September 30, Average Balance Interest Revenue Recognized During Impairment Cash Basis Interest Revenue Received Average Balance Interest Revenue Cash Basis Interest Revenue Received Owner occupied commercial real estate $ 18,759 $ 288 $ 290 $ 17,857 $ 291 $ 284 Income producing commercial real estate 10,906 144 153 18,623 240 232 Commercial & industrial 2,133 48 54 1,445 18 17 Commercial construction 3,316 38 39 2,869 39 39 Equipment financing 66 3 3 — — — Total commercial 35,180 521 539 40,794 588 572 Residential mortgage 16,669 195 203 14,654 168 162 Home equity lines of credit 301 4 2 275 3 3 Residential construction 1,298 22 25 1,295 23 23 Consumer direct 204 4 4 232 4 4 Indirect auto 1,069 14 14 1,220 16 16 Total $ 54,721 $ 760 $ 787 $ 58,470 $ 802 $ 780 Nine Months Ended September 30, Owner occupied commercial real estate $ 18,302 $ 846 $ 882 $ 20,623 $ 771 $ 800 Income producing commercial real estate 12,941 523 529 17,155 665 679 Commercial & industrial 1,921 74 89 1,861 83 83 Commercial construction 3,029 113 114 3,456 137 135 Equipment financing 29 3 3 — — — Total commercial 36,222 1,559 1,617 43,095 1,656 1,697 Residential mortgage 16,134 553 561 14,587 474 473 Home equity lines of credit 288 11 7 285 12 11 Residential construction 1,352 70 72 1,467 72 71 Consumer direct 197 11 11 260 14 14 Indirect auto 1,121 42 42 1,274 50 50 Total $ 55,314 $ 2,246 $ 2,310 $ 60,968 $ 2,278 $ 2,316
Schedule of recorded investment in nonaccrual loans by loan class	The following table presents the recorded investment in nonaccrual loans by loan class as of the dates indicated (in thousands) . September 30, 2019 December 31, 2018 Owner occupied commercial real estate $ 8,430 $ 6,421 Income producing commercial real estate 2,030 1,160 Commercial & industrial 2,625 1,417 Commercial construction 1,894 605 Equipment financing 1,974 2,677 Total commercial 16,953 12,280 Residential mortgage 9,475 8,035 Home equity lines of credit 3,065 2,360 Residential construction 597 288 Consumer direct 147 89 Indirect auto 595 726 Total $ 30,832 $ 23,778
Schedule of aging of the recorded investment in past due loans	The following table presents the aging of the recorded investment in past due loans by class of loans as of the dates indicated (in thousands) . Loans Past Due As of September 30, 2019 30 - 59 Days 60 - 89 Days > 90 Days Total Loans Not Past Due PCI Loans Total Owner occupied commercial real estate $ 1,881 $ 978 $ 6,447 $ 9,306 $ 1,673,169 $ 9,535 $ 1,692,010 Income producing commercial real estate 9,422 93 915 10,430 1,886,635 36,803 1,933,868 Commercial & industrial 6,017 663 2,055 8,735 1,262,148 360 1,271,243 Commercial construction 116 11 121 248 993,552 7,001 1,000,801 Equipment financing 1,039 668 1,901 3,608 721,167 4,731 729,506 Total commercial 18,475 2,413 11,439 32,327 6,536,671 58,430 6,627,428 Residential mortgage 4,649 1,921 1,155 7,725 1,104,126 8,977 1,120,828 Home equity lines of credit 2,620 479 897 3,996 663,590 1,401 668,987 Residential construction 314 71 150 535 228,312 505 229,352 Consumer direct 627 74 40 741 124,396 380 125,517 Indirect auto 508 142 520 1,170 129,984 — 131,154 Total loans $ 27,193 $ 5,100 $ 14,201 $ 46,494 $ 8,787,079 $ 69,693 $ 8,903,266 Loans Past Due As of December 31, 2018 30 - 59 Days 60 - 89 Days > 90 Days Total Loans Not Past Due PCI Loans Total Owner occupied commercial real estate $ 2,542 $ 2,897 $ 1,011 $ 6,450 $ 1,631,602 $ 9,852 $ 1,647,904 Income producing commercial real estate 1,624 291 301 2,216 1,771,893 38,311 1,812,420 Commercial & industrial 7,189 718 400 8,307 1,269,632 408 1,278,347 Commercial construction 267 — 68 335 789,916 5,907 796,158 Equipment financing 1,351 739 2,658 4,748 551,924 7,942 564,614 Total commercial 12,973 4,645 4,438 22,056 6,014,967 62,420 6,099,443 Residential mortgage 5,461 1,788 1,950 9,199 1,030,883 9,150 1,049,232 Home equity lines of credit 2,112 864 902 3,878 688,520 1,612 694,010 Residential construction 509 63 190 762 209,515 734 211,011 Consumer direct 600 82 21 703 120,777 533 122,013 Indirect auto 750 323 633 1,706 205,986 — 207,692 Total loans $ 22,405 $ 7,765 $ 8,134 $ 38,304 $ 8,270,648 $ 74,449 $ 8,383,401
Schedule of risk category of loans by class of loans	Based on the most recent analysis performed, the risk category of loans by class of loans as of the dates indicated is as follows (in thousands) . Pass Watch Substandard Doubtful / Loss Total As of September 30, 2019 Owner occupied commercial real estate $ 1,606,137 $ 32,725 $ 43,613 $ — $ 1,682,475 Income producing commercial real estate 1,844,176 25,451 27,438 — 1,897,065 Commercial & industrial 1,199,399 32,105 39,379 — 1,270,883 Commercial construction 963,742 22,393 7,665 — 993,800 Equipment financing 722,801 — 1,974 — 724,775 Total commercial 6,336,255 112,674 120,069 — 6,568,998 Residential mortgage 1,099,233 — 12,618 — 1,111,851 Home equity lines of credit 663,087 — 4,499 — 667,586 Residential construction 228,029 — 818 — 228,847 Consumer direct 124,729 — 408 — 125,137 Indirect auto 129,306 — 1,848 — 131,154 Total loans, excluding PCI loans 8,580,639 112,674 140,260 — 8,833,573 Owner occupied commercial real estate 1,905 5,262 2,368 — 9,535 Income producing commercial real estate 26,499 8,204 2,100 — 36,803 Commercial & industrial 86 50 224 — 360 Commercial construction 3,190 581 3,230 — 7,001 Equipment financing 4,715 — 16 — 4,731 Total commercial 36,395 14,097 7,938 — 58,430 Residential mortgage 7,505 — 1,472 — 8,977 Home equity lines of credit 1,361 — 40 — 1,401 Residential construction 467 — 38 — 505 Consumer direct 354 — 26 — 380 Indirect auto — — — — — Total PCI loans 46,082 14,097 9,514 — 69,693 Total loan portfolio $ 8,626,721 $ 126,771 $ 149,774 $ — $ 8,903,266 As of December 31, 2018 Owner occupied commercial real estate $ 1,585,797 $ 16,651 $ 35,604 $ — $ 1,638,052 Income producing commercial real estate 1,735,456 20,923 17,730 — 1,774,109 Commercial & industrial 1,247,206 8,430 22,303 — 1,277,939 Commercial construction 777,780 4,533 7,938 — 790,251 Equipment financing 553,995 — 2,677 — 556,672 Total commercial 5,900,234 50,537 86,252 — 6,037,023 Residential mortgage 1,028,660 — 11,422 — 1,040,082 Home equity lines of credit 688,493 — 3,905 — 692,398 Residential construction 209,744 — 533 — 210,277 Consumer direct 121,247 19 214 — 121,480 Indirect auto 205,632 — 2,060 — 207,692 Total loans, excluding PCI loans 8,154,010 50,556 104,386 — 8,308,952 Owner occupied commercial real estate 3,352 2,774 3,726 — 9,852 Income producing commercial real estate 23,430 13,403 1,478 — 38,311 Commercial & industrial 266 48 94 — 408 Commercial construction 3,503 188 2,216 — 5,907 Equipment financing 7,725 — 217 — 7,942 Total commercial 38,276 16,413 7,731 — 62,420 Residential mortgage 6,914 — 2,236 — 9,150 Home equity lines of credit 1,492 — 120 — 1,612 Residential construction 687 — 47 — 734 Consumer direct 493 — 40 — 533 Indirect auto — — — — — Total PCI loans 47,862 16,413 10,174 — 74,449 Total loan portfolio $ 8,201,872 $ 66,969 $ 114,560 $ — $ 8,383,401

Reclassifications Out of Accu_2

Reclassifications Out of Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Schedule of reclassifications out of accumulated other comprehensive income	The following table presents the details regarding amounts reclassified out of accumulated other comprehensive income for the periods indicated (in thousands) . Details about Accumulated Other Comprehensive Income Components Three Months Ended Nine Months Ended Affected Line Item in the Statement Where Net Income is Presented 2019 2018 2019 2018 Realized gains (losses) on available-for-sale securities: $ — $ 2 $ (118 ) $ (1,302 ) Securities gains (losses), net — (5 ) 30 312 Income tax (expense) benefit $ — $ (3 ) $ (88 ) $ (990 ) Net of tax Amortization of losses included in net income on available-for-sale securities transferred to held-to-maturity: $ (105 ) $ (168 ) $ (282 ) $ (607 ) Investment securities interest revenue 25 40 67 149 Income tax benefit $ (80 ) $ (128 ) $ (215 ) $ (458 ) Net of tax Amortization of losses included in net income on derivative financial instruments accounted for as cash flow hedges: Amortization of losses on de-designated positions $ — $ (105 ) $ (102 ) $ (395 ) Money market deposit interest expense Amortization of losses on de-designated positions — — (235 ) — Other expense — (105 ) (337 ) (395 ) Total before tax — 27 86 103 Income tax benefit $ — $ (78 ) $ (251 ) $ (292 ) Net of tax Reclassifications related to defined benefit pension plan activity: Prior service cost $ (158 ) $ (167 ) $ (476 ) $ (501 ) Salaries and employee benefits expense Actuarial losses (16 ) (60 ) (45 ) (180 ) Other expense Termination of defined benefit pension plan (1,558 ) — (1,558 ) — Merger-related and other charges (1,732 ) (227 ) (2,079 ) (681 ) Total before tax 443 57 531 188 Income tax benefit $ (1,289 ) $ (170 ) $ (1,548 ) $ (493 ) Net of tax Total reclassifications for the period $ (1,369 ) $ (379 ) $ (2,102 ) $ (2,233 ) Net of tax

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Schedule of computation of basic and diluted earnings per share	The following table sets forth the computation of basic and diluted earnings per share for the periods indicated (in thousands, except per share data) . Three Months Ended Nine Months Ended 2019 2018 2019 2018 Net income $ 48,362 $ 43,682 $ 136,709 $ 120,974 Dividends and undistributed earnings allocated to unvested shares (351 ) (301 ) (982 ) (850 ) Net income available to common shareholders $ 48,011 $ 43,381 $ 135,727 $ 120,124 Weighted average shares outstanding: Basic 79,663 79,806 79,714 79,588 Effect of dilutive securities Stock options 1 6 1 8 Restricted stock units 3 6 3 2 Diluted 79,667 79,818 79,718 79,598 Net income per common share: Basic $ 0.60 $ 0.54 $ 1.70 $ 1.51 Diluted $ 0.60 $ 0.54 $ 1.70 $ 1.51

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of derivative financial instruments on consolidated balance sheet	The table below presents the fair value of derivative financial instruments as of the dates indicated as well as their classification on the consolidated balance sheets (in thousands) : Derivatives designated as hedging instruments Interest Rate Products Balance Sheet Location September 30, 2019 December 31, 2018 Fair value hedge of brokered CDs Derivative liabilities $ 685 $ 1,682 $ 685 $ 1,682 Derivatives not designated as hedging instruments Interest Rate Products Balance Sheet Location September 30, 2019 December 31, 2018 Customer derivative positions Derivative assets $ 37,081 $ 5,216 Dealer offsets to customer derivative positions Derivative assets 118 7,620 Mortgage banking - loan commitment Derivative assets 2,732 1,190 Mortgage banking - forward sales commitment Derivative assets 313 28 Bifurcated embedded derivatives Derivative assets 3,511 10,651 $ 43,755 $ 24,705 Customer derivative positions Derivative liabilities $ 122 $ 9,661 Dealer offsets to customer derivative positions Derivative liabilities 9,222 781 Risk participations Derivative liabilities 14 8 Mortgage banking - forward sales commitment Derivative liabilities 187 259 Dealer offsets to bifurcated embedded derivatives Derivative liabilities 6,014 13,339 De-designated hedges Derivative liabilities — 703 $ 15,559 $ 24,751
Schedule of derivatives in fair value on the consolidated statement of income	The table below presents the effect of derivatives in fair value hedging relationships on the consolidated statement of income for the periods indicated (in thousands) . Location of Gain (Loss) Recognized in Income on Derivative Amount of Gain (Loss) Recognized in Income on Derivative Amount of Gain (Loss) Recognized in Income on Hedged Item 2019 2018 2019 2018 Three Months Ended September 30, Fair value hedges of brokered CDs Interest expense $ 71 $ (75 ) $ (55 ) $ (52 ) $ 71 $ (75 ) $ (55 ) $ (52 ) Nine Months Ended September 30, Fair value hedges of brokered CDs Interest expense $ 671 $ (912 ) $ (668 ) $ 518 Fair value hedges of corporate bonds Interest revenue — (336 ) — 405 $ 671 $ (1,248 ) $ (668 ) $ 923
Schedule of gains and losses recognized in income on derivatives not designated as hedging instruments	The table below presents the gains and losses recognized in income on derivatives not designated as hedging instruments for the periods indicated (in thousands) . Location of Gain (Loss) Recognized in Income on Derivative Amount of Gain (Loss) Recognized in Income on Derivative 2019 2018 Three Months Ended September 30, Customer derivatives and dealer offsets Other noninterest income $ 649 $ 611 Bifurcated embedded derivatives and dealer offsets Other noninterest income — 17 De-designated hedges Other noninterest income — (25 ) Mortgage banking derivatives Mortgage loan revenue (49 ) (213 ) Risk participations Other noninterest income (1 ) — $ 599 $ 390 Nine Months Ended September 30, Customer derivatives and dealer offsets Other noninterest income $ 2,376 $ 2,028 Bifurcated embedded derivatives and dealer offsets Other noninterest income 144 398 Interest rate caps Other noninterest income — 276 De-designated hedges Other noninterest income (193 ) (108 ) Mortgage banking derivatives Mortgage loan revenue (987 ) 1,207 Risk participations Other noninterest income (5 ) 12 $ 1,335 $ 3,813

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Schedule of stock option activity	The following table shows stock option activity for the first nine months of 2019 . Options Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term (Years) Aggregate Outstanding at December 31, 2018 47,139 $ 27.07 Exercised (12,000 ) 16.44 Cancelled/forfeited (2,396 ) 29.68 Expired (30,243 ) 31.43 Outstanding at September 30, 2019 2,500 22.81 1.9 $ 16 Exercisable at September 30, 2019 2,500 22.81 1.9 16
Schedule of restricted stock units activity	The table below presents restricted stock units activity for the first nine months of 2019 . Restricted Stock Unit Awards Shares Weighted- Average Grant- Date Fair Value Weighted- Average Remaining Contractual Term (Years) Aggregate Outstanding at December 31, 2018 759,746 $ 27.66 Granted 301,301 26.55 Vested (171,177 ) 24.42 $ 4,589 Cancelled (33,754 ) 25.79 Outstanding at September 30, 2019 856,116 27.99 3.7 24,271

Assets and Liabilities Measur_2

Assets and Liabilities Measured at Fair Value (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value on a recurring basis	The table below presents United’s assets and liabilities measured at fair value on a recurring basis as of the dates indicated, aggregated by the level in the fair value hierarchy within which those measurements fall (in thousands) . September 30, 2019 Level 1 Level 2 Level 3 Total Assets: Debt securities available for sale: U.S. Treasuries $ 154,632 $ — $ — $ 154,632 U.S. Government agencies — 3,175 — 3,175 State and political subdivisions — 227,325 — 227,325 Residential mortgage-backed securities — 1,256,633 — 1,256,633 Commercial mortgage-backed securities — 322,465 — 322,465 Corporate bonds — 200,197 998 201,195 Asset-backed securities — 106,621 — 106,621 Equity securities with readily available fair values 1,836 — — 1,836 Mortgage loans held for sale — 54,625 — 54,625 Deferred compensation plan assets 7,668 — — 7,668 Servicing rights for SBA/USDA loans — — 7,246 7,246 Residential mortgage servicing rights — — 11,089 11,089 Derivative financial instruments — 37,512 6,243 43,755 Total assets $ 164,136 $ 2,208,553 $ 25,576 $ 2,398,265 Liabilities: Deferred compensation plan liability $ 7,680 $ — $ — $ 7,680 Derivative financial instruments — 9,531 6,713 16,244 Total liabilities $ 7,680 $ 9,531 $ 6,713 $ 23,924 December 31, 2018 Level 1 Level 2 Level 3 Total Assets: Debt securities available for sale U.S. Treasuries $ 149,307 $ — $ — $ 149,307 U.S. Agencies — 25,553 — 25,553 State and political subdivisions — 233,941 — 233,941 Residential mortgage-backed securities — 1,445,910 — 1,445,910 Commercial mortgage-backed securities — 391,917 — 391,917 Corporate bonds — 198,168 995 199,163 Asset-backed securities — 182,676 — 182,676 Equity securities with readily available fair values 1,076 — — 1,076 Mortgage loans held for sale — 18,935 — 18,935 Deferred compensation plan assets 6,404 — — 6,404 Servicing rights for SBA/USDA loans — — 7,510 7,510 Residential mortgage servicing rights — — 11,877 11,877 Derivative financial instruments — 12,864 11,841 24,705 Total assets $ 156,787 $ 2,509,964 $ 32,223 $ 2,698,974 Liabilities: Deferred compensation plan liability $ 6,404 $ — $ — $ 6,404 Derivative financial instruments — 10,701 15,732 26,433 Total liabilities $ 6,404 $ 10,701 $ 15,732 $ 32,837
Schedule of assets measured at fair value on a recurring basis using significant unobservable inputs	The following table shows a reconciliation of the beginning and ending balances for the periods indicated for assets measured at fair value on a recurring basis using significant unobservable inputs that are classified as Level 3 values (in thousands) . 2019 2018 Derivative Asset Derivative Liability Servicing rights for SBA/USDA loans Residential mortgage servicing rights Debt Securities Available-for-Sale Derivative Derivative Servicing rights for SBA/USDA loans Residential mortgage servicing rights Debt Securities Available-for-Sale Three Months Ended September 30, Balance at beginning of period $ 7,744 $ 9,012 $ 7,380 $ 10,679 $ 995 $ 14,510 $ 18,366 $ 7,509 $ 10,801 $ 990 Additions — — 486 1,789 — — — 745 1,397 — Sales and settlements — — (286 ) (416 ) — — — (242 ) (146 ) — Other comprehensive income — — — — 3 — — — — 5 Amounts included in earnings - fair value adjustments (1,501 ) (2,299 ) (334 ) (963 ) — (94 ) 379 (514 ) (21 ) — Balance at end of period $ 6,243 $ 6,713 $ 7,246 $ 11,089 $ 998 $ 14,416 $ 18,745 $ 7,498 $ 12,031 $ 995 Nine Months Ended September 30, Balance at beginning of period $ 11,841 $ 15,732 $ 7,510 $ 11,877 $ 995 $ 12,207 $ 16,744 $ 7,740 $ 8,262 $ 900 Business combinations — — — — — — — (354 ) — — Additions — — 1,266 3,880 — — — 1,837 3,505 — Sales and settlements (1,135 ) (2,330 ) (837 ) (719 ) — (1,029 ) (1,347 ) (649 ) (352 ) — Other comprehensive income — — — — 3 — — — — 95 Amounts included in earnings - fair value adjustments (4,463 ) (6,689 ) (693 ) (3,949 ) — 3,238 3,348 (1,076 ) 616 — Balance at end of period $ 6,243 $ 6,713 $ 7,246 $ 11,089 $ 998 $ 14,416 $ 18,745 $ 7,498 $ 12,031 $ 995
Schedule of quantitative information about Level 3 fair value measurements for fair value on a recurring basis	The following table presents quantitative information about Level 3 fair value measurements for fair value on a recurring basis as of the dates indicated (in thousands) . Fair Value Weighted Average Level 3 Assets and Liabilities September 30, December 31, 2018 Valuation Technique September 30, December 31, 2018 Unobservable Inputs Servicing rights for SBA/USDA loans $ 7,246 $ 7,510 Discounted cash flow Discount rate 11.8 % 14.5 % Prepayment rate 15.3 % 12.1 % Residential mortgage servicing rights 11,089 11,877 Discounted cash flow Discount rate 10.0 % 10.0 % Prepayment rate 15.8 % 10.6 % Corporate bonds 998 995 Indicative bid provided by a broker Multiple factors, including but not limited to, current operations, financial condition, cash flows, and recently executed financing transactions related to the company N/A N/A Derivative assets - mortgage 2,732 1,190 Internal model Pull through rate 83.3 % 80.7 % Derivative assets - other 3,511 10,651 Dealer priced Dealer priced N/A N/A Derivative liabilities - risk participations 14 8 Internal model Probable exposure rate 0.33 % 0.44 % Probability of default rate 1.80 % 1.80 % Derivative liabilities - other 6,699 15,724 Dealer priced Dealer priced N/A N/A
Schedule of presentation of united's assets and liabilities measured at fair value on nonrecurring basis	The following table presents the fair value hierarchy and carrying value of all assets that were still held as of September 30, 2019 and December 31, 2018 , for which a nonrecurring fair value adjustment was recorded during the year-to-date periods presented (in thousands) . Level 1 Level 2 Level 3 Total September 30, 2019 Loans $ — $ — $ 9,119 $ 9,119 December 31, 2018 Loans $ — $ — $ 8,631 $ 8,631
Schedule of carrying amount and fair values for other financial instruments that are not measured at fair value on a recurring basis	The carrying amount and fair values as of the dates indicated for other financial instruments that are not measured at fair value on a recurring basis are as follows (in thousands) . Fair Value Level Carrying Amount Level 1 Level 2 Level 3 Total September 30, 2019 Assets: Securities held to maturity $ 243,028 $ — $ 248,546 $ — $ 248,546 Loans and leases, net 8,840,752 — — 8,804,331 8,804,331 Liabilities: Deposits 10,756,517 — 10,756,838 — 10,756,838 Federal Home Loan Bank advances 40,000 — 39,998 — 39,998 Long-term debt 240,245 — — 246,567 246,567 December 31, 2018 Assets: Securities held to maturity $ 274,407 $ — $ 268,803 $ — $ 268,803 Loans and leases, net 8,322,198 — — 8,277,387 8,277,387 Liabilities: Deposits 10,534,513 — 10,528,834 — 10,528,834 Federal Home Loan Bank advances 160,000 — 159,988 — 159,988 Long-term debt 267,189 — — 278,996 278,996

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of contractual amount of off-balance sheet instruments	The following table summarizes the contractual amount of off-balance sheet instruments as of the dates indicated (in thousands) . September 30, 2019 December 31, 2018 Financial instruments whose contract amounts represent credit risk: Commitments to extend credit $ 2,138,428 $ 2,129,463 Letters of credit 29,652 25,447

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of carrying amount of goodwill and other intangible assets	The carrying amount of goodwill and other intangible assets as of the dates indicated is summarized below (in thousands) : September 30, 2019 December 31, 2018 Core deposit intangible $ 65,452 $ 62,652 Less: accumulated amortization (49,537 ) (46,141 ) Net core deposit intangible 15,915 16,511 Noncompete agreements 3,144 3,144 Less: accumulated amortization (3,144 ) (2,695 ) Net noncompete agreements — 449 Total intangibles subject to amortization, net 15,915 16,960 Goodwill 327,425 307,112 Total goodwill and other intangible assets, net $ 343,340 $ 324,072
Schedule of changes in the carrying amounts of goodwill	The following is a summary of changes in the carrying amounts of goodwill (in thousands) : Three Months Ended September 30, Nine Months Ended September 30, 2019 Goodwill Accumulated Impairment Losses Goodwill, net of Accumulated Impairment Losses Goodwill Accumulated Impairment Losses Goodwill, net of Accumulated Impairment Losses Balance, beginning of period $ 633,015 $ (305,590 ) $ 327,425 $ 612,702 $ (305,590 ) $ 307,112 Acquisition of FMBT — — — 20,313 — 20,313 Balance, end of period $ 633,015 $ (305,590 ) $ 327,425 $ 633,015 $ (305,590 ) $ 327,425 2018 Balance, beginning of period $ 612,702 $ (305,590 ) $ 307,112 $ 526,181 $ (305,590 ) $ 220,591 Acquisition of Navitas — — — 87,379 — 87,379 Measurement period adjustments (1) — — — (858 ) — (858 ) Balance, end of period $ 612,702 $ (305,590 ) $ 307,112 $ 612,702 $ (305,590 ) $ 307,112 (1) Measurement period adjustments for the nine months ended September 30, 2018, were related to Four Oaks Fincorp, Inc. and HCSB Financial Corporation.
Schedule of estimated aggregate amortization expense for future periods for core deposit intangibles	The estimated aggregate amortization expense for future periods for core deposit intangibles is as follows (in thousands) : Year Remainder of 2019 $ 1,093 2020 3,842 2021 3,019 2022 2,379 2023 1,852 Thereafter 3,730 Total $ 15,915

Operating Leases (Tables)

Operating Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Schedule of operating lease income and expense and other supplemental information	The table below presents the operating lease income and expense recognized for the periods indicated (in thousands) . Income Statement Location Three Months Ended September 30, 2019 Nine Months Ended Operating lease cost Occupancy expense $ 1,272 $ 3,783 Variable lease cost Occupancy expense 112 336 Short-term lease cost Occupancy expense 52 92 Total lease cost $ 1,436 $ 4,211 Sublease income and rental income from owned properties under operating leases Other noninterest income $ 261 886
Schedule of future minimum lease payments under operating leases	As of September 30, 2019 , future minimum lease payments under operating leases were as follows (in thousands) : Year Remainder of 2019 $ 939 2020 5,394 2021 5,124 2022 4,694 2023 3,992 Thereafter 5,092 Total 25,235 Less discount (1,963 ) Present value of lease liability $ 23,272

Accounting Standards Updates _2

Accounting Standards Updates and Recently Adopted Standards - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset	$ 21,000
Lease liability	$ 23,272
Reduction in shareholders' equity upon adoption of accounting standard		$ 549
ASU No. 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset		23,800
Lease liability		26,800
Reduction in shareholders' equity upon adoption of accounting standard		$ 549

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details)	May 01, 2019USD ($)bank_branch	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Business Acquisition [Line Items]
Goodwill		$ 327,425,000	$ 307,112,000	$ 327,425,000	$ 307,112,000	$ 327,425,000	$ 307,112,000	$ 307,112,000	$ 220,591,000
Merger-related and other charges		2,541,000	115,000	6,981,000	4,449,000
FMBT
Business Acquisition [Line Items]
Number of banking offices | bank_branch	4
Assets acquired	$ 244,624,000
Liabilities assumed	212,844,000
Cash payments for acquisition	52,093,000
Goodwill	20,313,000
Goodwill expected to be tax deductible	0
Intangible asset acquired	2,800,000
Core deposit intangible | FMBT
Business Acquisition [Line Items]
Intangible asset acquired	$ 2,800,000
Expected useful life of intangible assets (in years)	9 years 3 months
Merger-related costs | FMBT
Business Acquisition [Line Items]
Merger-related and other charges		$ 756,000		$ 1,780,000
Merger-related costs | Navitas
Business Acquisition [Line Items]
Merger-related and other charges			$ 103,000		$ 4,930,000

Acquisitions - Acquisition date

Acquisitions - Acquisition date fair value of purchased assets and liabilities (Details) - USD ($) $ in Thousands	May 01, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Liabilities
Goodwill		$ 327,425	$ 327,425	$ 307,112	$ 307,112	$ 307,112	$ 220,591
FMBT
Assets
Cash and cash equivalents	$ 32,548
Loans	192,494
Allowance for loan losses	0
Premises and equipment, net	8,524
Bank owned life insurance	6,823
Net deferred tax asset	157
Core deposit intangible	2,800
Other assets	1,278
Total assets acquired	244,624
Liabilities
Deposits	212,127
Other liabilities	717
Total liabilities assumed	212,844
Total identifiable net assets	31,780
Cash consideration transferred	52,093
Goodwill	20,313
FMBT | Fair Value Adjustments
Assets
Cash and cash equivalents	0
Loans	(5,188)
Allowance for loan losses	6,338
Premises and equipment, net	1,400
Bank owned life insurance	0
Net deferred tax asset	(1,229)
Core deposit intangible	2,800
Other assets	246
Total assets acquired	4,367
Liabilities
Deposits	243
Other liabilities	(207)
Total liabilities assumed	36
Aggregate fair value adjustments	4,331
FMBT | First Madison Bank & Trust | As Recorded by FMBT
Assets
Cash and cash equivalents	32,548
Loans	197,682
Allowance for loan losses	(6,338)
Premises and equipment, net	7,124
Bank owned life insurance	6,823
Net deferred tax asset	1,386
Core deposit intangible	0
Other assets	1,032
Total assets acquired	240,257
Liabilities
Deposits	211,884
Other liabilities	924
Total liabilities assumed	212,808
Excess of assets acquired over liabilities assumed	$ 27,449

Acquisitions - Acquired loan an

Acquisitions - Acquired loan and lease portfolio at acquisition date (Details) - FMBT $ in Thousands	May 01, 2019USD ($)
Accounted for pursuant to ASC 310-30:
Contractually required principal and interest	$ 13,145
Non-accretable difference	2,517
Cash flows expected to be collected	10,628
Accretable yield	1,300
Fair value	9,328
Excluded from ASC 310-30:
Fair value	183,166
Gross contractual amounts receivable	218,855
Estimate of contractual cash flows not expected to be collected	$ 8,826

Acquisitions - Pro forma inform

Acquisitions - Pro forma information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition [Line Items]
Supplemental consolidated pro forma revenue	$ 144,881	$ 138,036	$ 420,872	$ 399,692
Supplemental consolidated pro forma net income	48,653	44,846	138,157	124,599
FMBT
Business Acquisition [Line Items]
Actual revenue included since acquisition date	2,697		5,024
Actual net income included since acquisition date	$ 1,403		$ 2,590
Navitas
Business Acquisition [Line Items]
Actual revenue included since acquisition date		7,006		17,243
Actual net income included since acquisition date		$ 1,884		$ 5,380

Balance Sheet Offsetting and _3

Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings - Summary of amounts outstanding under master netting agreements (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Offsetting [Abstract]
Repurchase agreements / reverse repurchase agreements, gross amounts of recognized assets		$ 50,000
Repurchase agreements / reverse repurchase agreements, gross amounts offset on the balance sheet		(50,000)
Repurchase agreements / reverse repurchase agreements, net asset balance		0
Repurchase agreements / reverse repurchase agreements, gross amounts not offset in balance sheet assets of financial instruments		0
Repurchase agreements / reverse repurchase agreements, gross amounts not offset in balance sheet assets of collateral received		0
Repurchase agreements / reverse repurchase agreements, net amount		0
Derivatives, gross amounts of recognized assets	$ 43,755	24,705
Derivatives, gross amounts offset on the balance sheet	0	0
Derivatives, net asset balance	43,755	24,705
Derivatives, gross amounts not offset in balance sheet assets of financial instruments	(122)	(973)
Derivative, gross amounts not offset in balance sheet assets of collateral received	0	(8,029)
Derivatives, net amount	43,633	15,703
Offsetting assets, gross amounts of recognized assets	43,755	74,705
Offsetting assets, gross amounts offset on balance sheet	0	(50,000)
Offsetting assets, net asset balance	43,755	24,705
Offsetting assets, gross amounts not offset in balance sheet of financial instruments	(122)	(973)
Offsetting assets, gross amounts not offset in the balance sheet of collateral received	0	(8,029)
Offsetting assets, net amount	43,633	$ 15,703
Weighted average interest rate of reverse repurchase agreements, assets (percent)		3.20%
Repurchase agreements / reverse repurchase agreements, gross amounts of recognized liabilities		$ 50,000
Repurchase agreements / reverse repurchase agreements, gross amounts offset on balance sheet		(50,000)
Repurchase agreements / reverse repurchase agreements, net liability balance		0
Repurchase agreements / reverse repurchase agreements, gross amounts not offset in balance sheet liabilities of financial instruments		0
Repurchase agreements / reverse repurchase agreements, gross amounts not offset in balance sheet liabilities of collateral pledged		0
Repurchase agreements / reverse repurchase agreements, net amount		0
Derivatives, gross amounts of recognized liabilities	16,244	26,433
Derivatives, gross amounts offset on balance sheet	0	0
Derivatives, net liability balance	16,244	26,433
Derivatives, gross amounts not offset in balance sheet liabilities of financial instruments	(122)	(973)
Derivatives, gross amounts not offset in balance sheet liabilities of collateral pledged	(16,316)	(16,126)
Derivatives, net amount	0	9,334
Offsetting liabilities, gross amounts of recognized liabilities	16,244	76,433
Offsetting liabilities, gross amounts offset on balance sheet	0	(50,000)
Offsetting liabilities, net liability balance	16,244	26,433
Offsetting liabilities, gross amounts not offset in balance sheet of financial instruments	(122)	(973)
Offsetting liabilities, gross amounts not offset in the balance sheet of collateral pledged	(16,316)	(16,126)
Offsetting liabilities, net amount	$ 0	$ 9,334
Weighted average interest rate of reverse repurchase agreements, liabilities (percent)		2.45%

Balance Sheet Offsetting and _4

Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings - Narrative (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Offsetting [Abstract]
Right to reclaim cash collateral	$ 16,300,000	$ 16,100,000
Obligation to return cash collateral	$ 0	$ 8,030,000

Balance Sheet Offsetting and _5

Balance Sheet Offsetting and Repurchase Agreements Accounted for as Secured Borrowings - Repurchase agreements accounted for as secured borrowings (Details) $ in Thousands	Dec. 31, 2018USD ($)
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	$ 50,000
Gross amount of recognized liabilities for repurchase agreements in offsetting disclosure	50,000
Amounts related to agreements not included in offsetting disclosure	0
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	0
Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	0
30 to 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	50,000
91 to 110 days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	0
Mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	50,000
Mortgage-backed securities | Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	0
Mortgage-backed securities | Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	0
Mortgage-backed securities | 30 to 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	50,000
Mortgage-backed securities | 91 to 110 days
Assets Sold under Agreements to Repurchase [Line Items]
Remaining Contractual Maturity of the Agreements	$ 0

Securities - Amortized cost, gr

Securities - Amortized cost, gross unrealized gains and losses, and fair value of debt securities held-to-maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Held-to-maturity securities:
Amortized Cost	$ 243,028	$ 274,407
Gross Unrealized Gains	6,171	1,777
Gross Unrealized Losses	653	7,381
Fair Value	248,546	268,803
State and political subdivisions
Held-to-maturity securities:
Amortized Cost	61,251	68,551
Gross Unrealized Gains	3,308	952
Gross Unrealized Losses	0	2,191
Fair Value	64,559	67,312
Residential mortgage-backed securities
Held-to-maturity securities:
Amortized Cost	163,603	176,488
Gross Unrealized Gains	2,532	652
Gross Unrealized Losses	597	5,094
Fair Value	165,538	172,046
Commercial mortgage-backed securities
Held-to-maturity securities:
Amortized Cost	18,174	29,368
Gross Unrealized Gains	331	173
Gross Unrealized Losses	56	96
Fair Value	$ 18,449	$ 29,445

Securities - Amortized cost, _2

Securities - Amortized cost, gross unrealized gains and losses, and fair value of debt securities available-for-sale (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt securities available for sale and equity securities:
Amortized Cost	$ 2,232,781	$ 2,660,263
Gross Unrealized Gains	42,232	6,454
Gross Unrealized Losses	2,967	38,250
Fair Value	2,272,046	2,628,467
U.S. Treasuries
Debt securities available for sale and equity securities:
Amortized Cost	152,759	150,712
Gross Unrealized Gains	1,873	767
Gross Unrealized Losses	0	2,172
Fair Value	154,632	149,307
U.S. Government agencies
Debt securities available for sale and equity securities:
Amortized Cost	2,972	25,493
Gross Unrealized Gains	203	335
Gross Unrealized Losses	0	275
Fair Value	3,175	25,553
State and political subdivisions
Debt securities available for sale and equity securities:
Amortized Cost	215,159	234,750
Gross Unrealized Gains	12,166	907
Gross Unrealized Losses	0	1,716
Fair Value	227,325	233,941
Residential mortgage-backed securities
Debt securities available for sale and equity securities:
Amortized Cost	1,236,101	1,464,380
Gross Unrealized Gains	22,154	3,428
Gross Unrealized Losses	1,622	21,898
Fair Value	1,256,633	1,445,910
Commercial mortgage-backed securities
Debt securities available for sale and equity securities:
Amortized Cost	318,815	399,663
Gross Unrealized Gains	3,783	187
Gross Unrealized Losses	133	7,933
Fair Value	322,465	391,917
Corporate bonds
Debt securities available for sale and equity securities:
Amortized Cost	200,246	200,582
Gross Unrealized Gains	1,291	502
Gross Unrealized Losses	342	1,921
Fair Value	201,195	199,163
Asset-backed securities
Debt securities available for sale and equity securities:
Amortized Cost	106,729	184,683
Gross Unrealized Gains	762	328
Gross Unrealized Losses	870	2,335
Fair Value	$ 106,621	$ 182,676

Securities - Narrative (Details

Securities - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)security	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)security	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)
Investments, Debt and Equity Securities [Abstract]
Carrying value of securities pledged to secure public deposits, derivatives and other secured borrowings | $	$ 724,000,000		$ 724,000,000		$ 925,000,000
Number of available-for-sale securities in unrealized loss position | security	49		49
Number of held-to-maturity securities in unrealized loss position | security	29		29
Other-than-temporary impairment charges | $	$ 0	$ 0	$ 0	$ 0

Securities - Summary of debt se

Securities - Summary of debt securites held-to-maturity in unrealized loss position (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Summary of held to maturity securities in an unrealized loss position
Fair Value, Less than 12 Months	$ 2,597	$ 13,641
Unrealized Loss, Less than 12 Months	12	107
Fair Value, 12 Months or More	57,676	174,812
Unrealized Loss, 12 Months or More	641	7,274
Fair Value, Total	60,273	188,453
Unrealized Loss, Total	653	7,381
State and political subdivisions
Summary of held to maturity securities in an unrealized loss position
Fair Value, Less than 12 Months		7,062
Unrealized Loss, Less than 12 Months		46
Fair Value, 12 Months or More		34,146
Unrealized Loss, 12 Months or More		2,145
Fair Value, Total		41,208
Unrealized Loss, Total		2,191
Residential mortgage-backed securities
Summary of held to maturity securities in an unrealized loss position
Fair Value, Less than 12 Months	2,597	6,579
Unrealized Loss, Less than 12 Months	12	61
Fair Value, 12 Months or More	55,776	136,376
Unrealized Loss, 12 Months or More	585	5,033
Fair Value, Total	58,373	142,955
Unrealized Loss, Total	597	5,094
Commercial mortgage-backed securities
Summary of held to maturity securities in an unrealized loss position
Fair Value, Less than 12 Months	0	0
Unrealized Loss, Less than 12 Months	0	0
Fair Value, 12 Months or More	1,900	4,290
Unrealized Loss, 12 Months or More	56	96
Fair Value, Total	1,900	4,290
Unrealized Loss, Total	$ 56	$ 96

Securities - Summary of debt _2

Securities - Summary of debt securities available-for-sale in unrealized loss position (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months	$ 156,894	$ 328,787
Unrealized Loss, Less than 12 Months	1,584	3,309
Fair Value, 12 Months or More	165,339	1,555,326
Unrealized Loss, 12 Months or More	1,383	34,941
Fair Value, Total	322,233	1,884,113
Unrealized Loss, Total	2,967	38,250
U.S. Treasuries
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months		0
Unrealized Loss, Less than 12 Months		0
Fair Value, 12 Months or More		120,391
Unrealized Loss, 12 Months or More		2,172
Fair Value, Total		120,391
Unrealized Loss, Total		2,172
U.S. Government agencies
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months		0
Unrealized Loss, Less than 12 Months		0
Fair Value, 12 Months or More		21,519
Unrealized Loss, 12 Months or More		275
Fair Value, Total		21,519
Unrealized Loss, Total		275
State and political subdivisions
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months		15,160
Unrealized Loss, Less than 12 Months		28
Fair Value, 12 Months or More		133,500
Unrealized Loss, 12 Months or More		1,688
Fair Value, Total		148,660
Unrealized Loss, Total		1,716
Residential mortgage-backed securities
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months	72,466	234,583
Unrealized Loss, Less than 12 Months	603	808
Fair Value, 12 Months or More	111,223	775,360
Unrealized Loss, 12 Months or More	1,019	21,090
Fair Value, Total	183,689	1,009,943
Unrealized Loss, Total	1,622	21,898
Commercial mortgage-backed securities
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months	0	4,552
Unrealized Loss, Less than 12 Months	0	594
Fair Value, 12 Months or More	37,111	355,292
Unrealized Loss, 12 Months or More	133	7,339
Fair Value, Total	37,111	359,844
Unrealized Loss, Total	133	7,933
Corporate bonds
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months	19,820	0
Unrealized Loss, Less than 12 Months	114	0
Fair Value, 12 Months or More	15,772	117,296
Unrealized Loss, 12 Months or More	228	1,921
Fair Value, Total	35,592	117,296
Unrealized Loss, Total	342	1,921
Asset-backed securities
Summary of available for sale securities in an unrealized loss position
Fair Value, Less than 12 Months	64,608	74,492
Unrealized Loss, Less than 12 Months	867	1,879
Fair Value, 12 Months or More	1,233	31,968
Unrealized Loss, 12 Months or More	3	456
Fair Value, Total	65,841	106,460
Unrealized Loss, Total	$ 870	$ 2,335

Securities - Summary of availab

Securities - Summary of available-for-sale securities sales activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales	$ 0	$ 16,383	$ 225,883	$ 156,679
Gross gains on sales	0	176	1,776	825
Gross losses on sales	0	(174)	(1,894)	(2,127)
Net gains (losses) on sales of securities	0	2	(118)	(1,302)
Income tax expense (benefit) attributable to sales	$ 0	$ 5	$ (30)	$ (312)

Securities - Amortized cost and

Securities - Amortized cost and fair value of held-to-maturity and available-for-sale securities by contractual maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Available-for-Sale, Amortized Cost
Amortized Cost	$ 2,232,781	$ 2,660,263
Available-for-Sale, Fair Value
Fair Value	2,272,046	2,628,467
Held-to-Maturity, Amortized Cost
Amortized Cost	243,028	274,407
Held-to-Maturity, Fair Value
Fair value	248,546	268,803
U.S. Treasuries
Available-for-Sale, Amortized Cost
Available-for-Sale, Amortized Cost, Within 1 year	29,786
Available-for-Sale, Amortized Cost, 1 to 5 years	122,973
Amortized Cost	152,759	150,712
Available-for-Sale, Fair Value
Available-for-Sale, Fair Value, Within 1 year	29,887
Available-for-Sale, Fair Value, 1 to 5 years	124,745
Fair Value	154,632	149,307
Held-to-Maturity, Amortized Cost
Held-to-Maturity, Amortized Cost, Within 1 year	0
Held-to-Maturity, Amortized Cost, 1 to 5 years	0
Amortized Cost	0
Held-to-Maturity, Fair Value
Held-to-Maturity, Fair Value, Within 1 year	0
Held-to-Maturity, Fair Value, 1 to 5 years	0
Fair value	0
U.S. Government agencies
Available-for-Sale, Amortized Cost
Available-for-Sale, Amortized Cost, 1 to 5 years	406
Available-for-Sale, Amortized Cost, More than 10 years	2,566
Amortized Cost	2,972	25,493
Available-for-Sale, Fair Value
Available-for-Sale, Fair Value, 1 to 5 years	406
Available-for-Sale, Fair Value, More than 10 years	2,769
Fair Value	3,175	25,553
Held-to-Maturity, Amortized Cost
Held-to-Maturity, Amortized Cost, 1 to 5 years	0
Held-to-Maturity, Amortized Cost, More than 10 years	0
Amortized Cost	0
Held-to-Maturity, Fair Value
Held-to-Maturity, Fair Value, 1 to 5 years	0
Held-to-Maturity, Fair Value, More than 10 years	0
Fair value	0
State and political subdivisions
Available-for-Sale, Amortized Cost
Available-for-Sale, Amortized Cost, Within 1 year	935
Available-for-Sale, Amortized Cost, 1 to 5 years	54,107
Available-for-Sale, Amortized Cost, 5 to 10 years	16,339
Available-for-Sale, Amortized Cost, More than 10 years	143,778
Amortized Cost	215,159	234,750
Available-for-Sale, Fair Value
Available-for-Sale, Fair Value, Within 1 year	943
Available-for-Sale, Fair Value, 1 to 5 years	55,437
Available-for-Sale, Fair Value, 5 to 10 years	17,222
Available-for-Sale, Fair Value, More than 10 years	153,723
Fair Value	227,325	233,941
Held-to-Maturity, Amortized Cost
Held-to-Maturity, Amortized Cost, Within 1 year	1,350
Held-to-Maturity, Amortized Cost, 1 to 5 years	10,764
Held-to-Maturity, Amortized Cost, 5 to 10 years	7,202
Held-to-Maturity, Amortized Cost, More than 10 years	41,935
Amortized Cost	61,251	68,551
Held-to-Maturity, Fair Value
Held-to-Maturity, Fair Value, Within 1 year	1,376
Held-to-Maturity, Fair Value, 1 to 5 years	11,322
Held-to-Maturity, Fair Value, 5 to 10 years	8,047
Held-to-Maturity, Fair Value, More than 10 years	43,814
Fair value	64,559	67,312
Corporate bonds
Available-for-Sale, Amortized Cost
Available-for-Sale, Amortized Cost, Within 1 year	120,046
Available-for-Sale, Amortized Cost, 1 to 5 years	77,700
Available-for-Sale, Amortized Cost, 5 to 10 years	1,500
Available-for-Sale, Amortized Cost, More than 10 years	1,000
Amortized Cost	200,246	200,582
Available-for-Sale, Fair Value
Available-for-Sale, Fair Value, Within 1 year	120,176
Available-for-Sale, Fair Value, 1 to 5 years	78,475
Available-for-Sale, Fair Value, 5 to 10 years	1,546
Available-for-Sale, Fair Value, More than 10 years	998
Fair Value	201,195	199,163
Held-to-Maturity, Amortized Cost
Held-to-Maturity, Amortized Cost, Within 1 year	0
Held-to-Maturity, Amortized Cost, 1 to 5 years	0
Held-to-Maturity, Amortized Cost, 5 to 10 years	0
Held-to-Maturity, Amortized Cost, More than 10 years	0
Amortized Cost	0
Held-to-Maturity, Fair Value
Held-to-Maturity, Fair Value, Within 1 year	0
Held-to-Maturity, Fair Value, 1 to 5 years	0
Held-to-Maturity, Fair Value, 5 to 10 years	0
Held-to-Maturity, Fair Value, More than 10 years	0
Fair value	0
Asset-backed securities
Available-for-Sale, Amortized Cost
Available-for-Sale, Amortized Cost, 1 to 5 years	1,754
Available-for-Sale, Amortized Cost, More than 10 years	104,975
Amortized Cost	106,729	184,683
Available-for-Sale, Fair Value
Available-for-Sale, Fair Value, 1 to 5 years	1,746
Available-for-Sale, Fair Value, More than 10 years	104,875
Fair Value	106,621	182,676
Held-to-Maturity, Amortized Cost
Held-to-Maturity, Amortized Cost, 1 to 5 years	0
Held-to-Maturity, Amortized Cost, More than 10 years	0
Amortized Cost	0
Held-to-Maturity, Fair Value
Held-to-Maturity, Fair Value, 1 to 5 years	0
Held-to-Maturity, Fair Value, More than 10 years	0
Fair value	0
Total securities other than mortgage-backed securities
Available-for-Sale, Amortized Cost
Available-for-Sale, Amortized Cost, Within 1 year	150,767
Available-for-Sale, Amortized Cost, 1 to 5 years	256,940
Available-for-Sale, Amortized Cost, 5 to 10 years	17,839
Available-for-Sale, Amortized Cost, More than 10 years	252,319
Available-for-Sale, Fair Value
Available-for-Sale, Fair Value, Within 1 year	151,006
Available-for-Sale, Fair Value, 1 to 5 years	260,809
Available-for-Sale, Fair Value, 5 to 10 years	18,768
Available-for-Sale, Fair Value, More than 10 years	262,365
Held-to-Maturity, Amortized Cost
Held-to-Maturity, Amortized Cost, Within 1 year	1,350
Held-to-Maturity, Amortized Cost, 1 to 5 years	10,764
Held-to-Maturity, Amortized Cost, 5 to 10 years	7,202
Held-to-Maturity, Amortized Cost, More than 10 years	41,935
Held-to-Maturity, Fair Value
Held-to-Maturity, Fair Value, Within 1 year	1,376
Held-to-Maturity, Fair Value, 1 to 5 years	11,322
Held-to-Maturity, Fair Value, 5 to 10 years	8,047
Held-to-Maturity, Fair Value, More than 10 years	43,814
Residential mortgage-backed securities
Available-for-Sale, Amortized Cost
Amortized Cost	1,236,101	1,464,380
Available-for-Sale, Fair Value
Fair Value	1,256,633	1,445,910
Held-to-Maturity, Amortized Cost
Amortized Cost	163,603	176,488
Held-to-Maturity, Fair Value
Fair value	165,538	172,046
Commercial mortgage-backed securities
Available-for-Sale, Amortized Cost
Amortized Cost	318,815	399,663
Available-for-Sale, Fair Value
Fair Value	322,465	391,917
Held-to-Maturity, Amortized Cost
Amortized Cost	18,174	29,368
Held-to-Maturity, Fair Value
Fair value	$ 18,449	$ 29,445

Loans and Leases and Allowanc_3

Loans and Leases and Allowance for Credit Losses - Major classifications of loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Classifications of loans
Total loans	$ 8,903,266	$ 8,383,401
Less allowance for loan and lease losses	(62,514)	(61,203)
Loans and leases, net	8,840,752	8,322,198
Loans Receivable
Classifications of loans
Total loans	8,903,266	8,383,401
Loans Receivable | Indirect auto
Classifications of loans
Total loans	131,154	207,692
Loans Receivable | Commercial
Classifications of loans
Total loans	6,627,428	6,099,443
Loans Receivable | Commercial | Owner occupied commercial real estate
Classifications of loans
Total loans	1,692,010	1,647,904
Loans Receivable | Commercial | Income producing commercial real estate
Classifications of loans
Total loans	1,933,868	1,812,420
Loans Receivable | Commercial | Commercial & industrial
Classifications of loans
Total loans	1,271,243	1,278,347
Loans Receivable | Commercial | Construction
Classifications of loans
Total loans	1,000,801	796,158
Loans Receivable | Commercial | Equipment financing
Classifications of loans
Total loans	729,506	564,614
Loans Receivable | Residential | Residential mortgage
Classifications of loans
Total loans	1,120,828	1,049,232
Loans Receivable | Residential | Home equity lines of credit
Classifications of loans
Total loans	668,987	694,010
Loans Receivable | Residential | Construction
Classifications of loans
Total loans	229,352	211,011
Loans Receivable | Consumer direct
Classifications of loans
Total loans	$ 125,517	$ 122,013

Loans and Leases and Allowanc_4

Loans and Leases and Allowance for Credit Losses - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Remaining accretable fair value mark on loans	$ 5,690,000		$ 5,690,000		$ 4,310,000
Net Investment in leases	39,519,000		39,519,000		30,384,000
Criteria amount for evaluation of impairment	500,000		500,000
Specific reserves	2,120,000		2,120,000		2,310,000
Gross additional interest revenue that would have been earned if the nonaccrual loans had performed as per original terms	338,000	$ 213,000	965,000	$ 812,000
Loans Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value of purchased credit impaired loans	69,693,000		69,693,000		74,449,000
Unpaid principal balance of purchased credit impaired (PCI) loans	97,100,000		97,100,000		109,000,000
Additional availability on loans classified as troubled debt restructurings	0		0		0
Loans Receivable | Indirect auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value of purchased credit impaired loans	0		0		0
Remaining accretable fair value mark on loans	1,910,000		1,910,000		3,720,000
FHLB
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pledged as collateral to secure FHLB advances	$ 4,150,000,000		$ 4,150,000,000		$ 3,980,000,000

Loans and Leases and Allowanc_5

Loans and Leases and Allowance for Credit Losses - Changes in the value of the accretable yield for acquired loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 26,308	$ 23,406	$ 26,868	$ 17,686
Additions due to acquisitions	0	0	1,300	1,977
Accretion	(4,950)	(3,773)	(14,037)	(9,284)
Reclassification from nonaccretable difference	1,159	3,018	5,627	10,136
Changes in expected cash flows that do not affect nonaccretable difference	329	2,027	3,088	4,163
Balance at end of period	$ 22,846	$ 24,678	$ 22,846	$ 24,678

Loans and Leases and Allowanc_6

Loans and Leases and Allowance for Credit Losses - Components of net investment in leases (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Net Investment in Leases
Minimum future lease payments receivable	$ 42,176	$ 31,915
Estimated residual value of leased equipment	3,749	3,593
Initial direct costs	936	827
Security deposits	(1,091)	(1,189)
Purchase accounting premium	379	806
Unearned income	(6,630)	(5,568)
Net investment in leases	$ 39,519	$ 30,384

Loans and Leases and Allowanc_7

Loans and Leases and Allowance for Credit Losses - Minimum future lease payment to be received (Details) $ in Thousands	Sep. 30, 2019USD ($)
Minimum future lease payments expected to be received
Remainder of 2019	$ 4,048
2020	14,455
2021	10,740
2022	7,131
2023	4,226
Thereafter	1,576
Total	$ 42,176

Loans and Leases and Allowanc_8

Loans and Leases and Allowance for Credit Losses - Balance and activity in allowance for loan losses by portfolio segment and recorded investment in loans by portfolio segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 65,595	$ 63,966	$ 64,613	$ 61,226
Charge-Offs	(4,080)	(3,323)	(12,267)	(9,438)
Recoveries	1,357	1,857	3,976	5,112
(Release)Provision	3,100	1,800	9,650	7,400
Ending Balance	65,972	64,300	65,972	64,300
Allowance for unfunded commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	3,391	2,895	3,410	2,312
Charge-Offs	0	0	0	0
Recoveries	0	0	0	0
(Release)Provision	67	465	48	1,048
Ending Balance	3,458	3,360	3,458	3,360
Loans Receivable
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	62,204	61,071	61,203	58,914
Charge-Offs	(4,080)	(3,323)	(12,267)	(9,438)
Recoveries	1,357	1,857	3,976	5,112
(Release)Provision	3,033	1,335	9,602	6,352
Ending Balance	62,514	60,940	62,514	60,940
Loans Receivable | Indirect auto
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	774	1,268	999	1,550
Charge-Offs	(125)	(228)	(502)	(1,043)
Recoveries	67	53	151	188
(Release)Provision	(51)	69	17	467
Ending Balance	665	1,162	665	1,162
Loans Receivable | Commercial | Owner occupied commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	11,545	12,909	12,207	14,776
Charge-Offs	0	0	(5)	(67)
Recoveries	39	251	166	939
(Release)Provision	(165)	(706)	(949)	(3,194)
Ending Balance	11,419	12,454	11,419	12,454
Loans Receivable | Commercial | Income producing commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	11,020	10,862	11,073	9,381
Charge-Offs	(472)	(375)	(977)	(2,685)
Recoveries	41	375	127	842
(Release)Provision	473	220	839	3,544
Ending Balance	11,062	11,082	11,062	11,082
Loans Receivable | Commercial | Commercial & industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	5,308	4,205	4,802	3,971
Charge-Offs	(898)	(660)	(3,833)	(1,277)
Recoveries	207	242	645	848
(Release)Provision	773	568	3,776	813
Ending Balance	5,390	4,355	5,390	4,355
Loans Receivable | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	10,318	10,123	10,337	10,523
Charge-Offs	0	(24)	(70)	(440)
Recoveries	247	66	804	322
(Release)Provision	(158)	(293)	(664)	(533)
Ending Balance	10,407	9,872	10,407	9,872
Loans Receivable | Commercial | Equipment financing
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	6,935	3,561	5,452	0
Charge-Offs	(1,376)	(700)	(3,810)	(862)
Recoveries	202	218	466	386
(Release)Provision	1,485	1,141	5,138	4,696
Ending Balance	7,246	4,220	7,246	4,220
Loans Receivable | Residential | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	2,365	2,590	2,433	2,729
Charge-Offs	(13)	(32)	(263)	(40)
Recoveries	18	195	91	326
(Release)Provision	181	(382)	290	(644)
Ending Balance	2,551	2,371	2,551	2,371
Loans Receivable | Residential | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	8,290	9,845	8,295	10,097
Charge-Offs	(264)	(235)	(433)	(417)
Recoveries	106	66	388	290
(Release)Provision	82	70	(36)	(224)
Ending Balance	8,214	9,746	8,214	9,746
Loans Receivable | Residential | Home equity lines of credit
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	4,794	4,943	4,752	5,177
Charge-Offs	(287)	(426)	(653)	(761)
Recoveries	204	147	466	372
(Release)Provision	(28)	174	118	50
Ending Balance	4,683	4,838	4,683	4,838
Loans Receivable | Consumer direct
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	855	765	853	710
Charge-Offs	(645)	(643)	(1,721)	(1,846)
Recoveries	226	244	672	599
(Release)Provision	441	474	1,073	1,377
Ending Balance	$ 877	$ 840	$ 877	$ 840

Loans and Leases and Allowanc_9

Loans and Leases and Allowance for Credit Losses - Recorded investment in loans by portfolio segment and the balance of the allowance for loan losses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	$ 2,123		$ 2,312
Allowance for Credit Losses, Collectively evaluated for impairment	63,351		61,541
Allowance for Credit Losses, PCI	498		760
Allowance for Credit Losses, Ending balance	65,972	$ 65,595	64,613	$ 64,300	$ 63,966	$ 61,226
Loans Outstanding, Ending Balance	8,903,266		8,383,401
Allowance for unfunded commitments
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	0		0
Allowance for Credit Losses, Collectively evaluated for impairment	3,458		3,410
Allowance for Credit Losses, PCI	0		0
Allowance for Credit Losses, Ending balance	3,458	3,391	3,410	3,360	2,895	2,312
Loans Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	2,123		2,312
Allowance for Credit Losses, Collectively evaluated for impairment	59,893		58,131
Allowance for Credit Losses, PCI	498		760
Allowance for Credit Losses, Ending balance	62,514	62,204	61,203	60,940	61,071	58,914
Loans Outstanding, Individually evaluated for impairment	54,272		55,449
Loans Outstanding, Collectively evaluated for impairment	8,779,301		8,253,503
PCI Loans	69,693		74,449
Loans Outstanding, Ending Balance	8,903,266		8,383,401
Loans Receivable | Indirect auto
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	41		26
Allowance for Credit Losses, Collectively evaluated for impairment	624		973
Allowance for Credit Losses, PCI	0		0
Allowance for Credit Losses, Ending balance	665	774	999	1,162	1,268	1,550
Loans Outstanding, Individually evaluated for impairment	1,043		1,237
Loans Outstanding, Collectively evaluated for impairment	130,111		206,455
PCI Loans	0		0
Loans Outstanding, Ending Balance	131,154		207,692
Loans Receivable | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
PCI Loans	58,430		62,420
Loans Outstanding, Ending Balance	6,627,428		6,099,443
Loans Receivable | Commercial | Owner occupied commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	859		862
Allowance for Credit Losses, Collectively evaluated for impairment	10,446		11,328
Allowance for Credit Losses, PCI	114		17
Allowance for Credit Losses, Ending balance	11,419	11,545	12,207	12,454	12,909	14,776
Loans Outstanding, Individually evaluated for impairment	18,562		17,602
Loans Outstanding, Collectively evaluated for impairment	1,663,913		1,620,450
PCI Loans	9,535		9,852
Loans Outstanding, Ending Balance	1,692,010		1,647,904
Loans Receivable | Commercial | Income producing commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	261		402
Allowance for Credit Losses, Collectively evaluated for impairment	10,737		10,671
Allowance for Credit Losses, PCI	64		0
Allowance for Credit Losses, Ending balance	11,062	11,020	11,073	11,082	10,862	9,381
Loans Outstanding, Individually evaluated for impairment	10,748		16,584
Loans Outstanding, Collectively evaluated for impairment	1,886,317		1,757,525
PCI Loans	36,803		38,311
Loans Outstanding, Ending Balance	1,933,868		1,812,420
Loans Receivable | Commercial | Commercial & industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	33		32
Allowance for Credit Losses, Collectively evaluated for impairment	5,305		4,761
Allowance for Credit Losses, PCI	52		9
Allowance for Credit Losses, Ending balance	5,390	5,308	4,802	4,355	4,205	3,971
Loans Outstanding, Individually evaluated for impairment	2,068		1,621
Loans Outstanding, Collectively evaluated for impairment	1,268,815		1,276,318
PCI Loans	360		408
Loans Outstanding, Ending Balance	1,271,243		1,278,347
Loans Receivable | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	49		71
Allowance for Credit Losses, Collectively evaluated for impairment	10,248		9,974
Allowance for Credit Losses, PCI	110		292
Allowance for Credit Losses, Ending balance	10,407	10,318	10,337	9,872	10,123	10,523
Loans Outstanding, Individually evaluated for impairment	3,287		2,491
Loans Outstanding, Collectively evaluated for impairment	990,513		787,760
PCI Loans	7,001		5,907
Loans Outstanding, Ending Balance	1,000,801		796,158
Loans Receivable | Commercial | Equipment financing
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	0		0
Allowance for Credit Losses, Collectively evaluated for impairment	7,149		5,045
Allowance for Credit Losses, PCI	97		407
Allowance for Credit Losses, Ending balance	7,246	6,935	5,452	4,220	3,561	0
Loans Outstanding, Individually evaluated for impairment	111		0
Loans Outstanding, Collectively evaluated for impairment	724,664		556,672
PCI Loans	4,731		7,942
Loans Outstanding, Ending Balance	729,506		564,614
Loans Receivable | Residential | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	51		51
Allowance for Credit Losses, Collectively evaluated for impairment	2,472		2,382
Allowance for Credit Losses, PCI	28		0
Allowance for Credit Losses, Ending balance	2,551	2,365	2,433	2,371	2,590	2,729
Loans Outstanding, Individually evaluated for impairment	1,283		1,207
Loans Outstanding, Collectively evaluated for impairment	227,564		209,070
PCI Loans	505		734
Loans Outstanding, Ending Balance	229,352		211,011
Loans Receivable | Residential | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	808		861
Allowance for Credit Losses, Collectively evaluated for impairment	7,392		7,410
Allowance for Credit Losses, PCI	14		24
Allowance for Credit Losses, Ending balance	8,214	8,290	8,295	9,746	9,845	10,097
Loans Outstanding, Individually evaluated for impairment	16,672		14,220
Loans Outstanding, Collectively evaluated for impairment	1,095,179		1,025,862
PCI Loans	8,977		9,150
Loans Outstanding, Ending Balance	1,120,828		1,049,232
Loans Receivable | Residential | Home equity lines of credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	16		1
Allowance for Credit Losses, Collectively evaluated for impairment	4,648		4,740
Allowance for Credit Losses, PCI	19		11
Allowance for Credit Losses, Ending balance	4,683	4,794	4,752	4,838	4,943	5,177
Loans Outstanding, Individually evaluated for impairment	300		276
Loans Outstanding, Collectively evaluated for impairment	667,286		692,122
PCI Loans	1,401		1,612
Loans Outstanding, Ending Balance	668,987		694,010
Loans Receivable | Consumer direct
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Credit Losses, Individually evaluated for impairment	5		6
Allowance for Credit Losses, Collectively evaluated for impairment	872		847
Allowance for Credit Losses, PCI	0		0
Allowance for Credit Losses, Ending balance	877	$ 855	853	$ 840	$ 765	$ 710
Loans Outstanding, Individually evaluated for impairment	198		211
Loans Outstanding, Collectively evaluated for impairment	124,939		121,269
PCI Loans	380		533
Loans Outstanding, Ending Balance	$ 125,517		$ 122,013

Loans and Leases and Allowan_10

Loans and Leases and Allowance for Credit Losses - Loans individually evaluated for impairment by class of loans (Details) - Loans Receivable - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	$ 26,707	$ 26,829
Unpaid Principal Balance, With an allowance recorded	32,142	32,995
Unpaid Principal Balance	58,849	59,824
Recorded Investment
Recorded Investment, With no related allowance recorded	22,956	23,477
Recorded Investment, With allowance recorded	31,316	31,972
Recorded Investment	54,272	55,449
Allowance for Loan Losses Allocated	2,123	2,312
Indirect auto
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	236	294
Unpaid Principal Balance, With an allowance recorded	820	946
Recorded Investment
Recorded Investment, With no related allowance recorded	223	292
Recorded Investment, With allowance recorded	820	945
Allowance for Loan Losses Allocated	41	26
Commercial
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	17,712	19,846
Unpaid Principal Balance, With an allowance recorded	20,503	21,845
Recorded Investment
Recorded Investment, With no related allowance recorded	15,026	17,304
Recorded Investment, With allowance recorded	19,750	20,994
Allowance for Loan Losses Allocated	1,202	1,367
Commercial | Owner occupied commercial real estate
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	9,225	8,650
Unpaid Principal Balance, With an allowance recorded	11,509	11,095
Recorded Investment
Recorded Investment, With no related allowance recorded	7,107	6,546
Recorded Investment, With allowance recorded	11,455	11,056
Allowance for Loan Losses Allocated	859	862
Commercial | Income producing commercial real estate
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	5,363	9,986
Unpaid Principal Balance, With an allowance recorded	5,968	6,968
Recorded Investment
Recorded Investment, With no related allowance recorded	5,164	9,881
Recorded Investment, With allowance recorded	5,584	6,703
Allowance for Loan Losses Allocated	261	402
Commercial | Commercial & industrial
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	1,297	525
Unpaid Principal Balance, With an allowance recorded	1,200	1,652
Recorded Investment
Recorded Investment, With no related allowance recorded	1,037	370
Recorded Investment, With allowance recorded	1,031	1,251
Allowance for Loan Losses Allocated	33	32
Commercial | Construction
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	1,716	685
Unpaid Principal Balance, With an allowance recorded	1,826	2,130
Recorded Investment
Recorded Investment, With no related allowance recorded	1,607	507
Recorded Investment, With allowance recorded	1,680	1,984
Allowance for Loan Losses Allocated	49	71
Commercial | Equipment financing
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	111	0
Unpaid Principal Balance, With an allowance recorded	0	0
Recorded Investment
Recorded Investment, With no related allowance recorded	111	0
Recorded Investment, With allowance recorded	0	0
Allowance for Loan Losses Allocated	0	0
Residential | Construction
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	790	554
Unpaid Principal Balance, With an allowance recorded	637	791
Recorded Investment
Recorded Investment, With no related allowance recorded	658	428
Recorded Investment, With allowance recorded	625	779
Allowance for Loan Losses Allocated	51	51
Residential | Residential mortgage
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	7,666	5,787
Unpaid Principal Balance, With an allowance recorded	9,922	9,169
Recorded Investment
Recorded Investment, With no related allowance recorded	6,808	5,202
Recorded Investment, With allowance recorded	9,864	9,018
Allowance for Loan Losses Allocated	808	861
Residential | Home equity lines of credit
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	275	330
Unpaid Principal Balance, With an allowance recorded	89	45
Recorded Investment
Recorded Investment, With no related allowance recorded	213	234
Recorded Investment, With allowance recorded	87	42
Allowance for Loan Losses Allocated	16	1
Consumer direct
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	28	18
Unpaid Principal Balance, With an allowance recorded	171	199
Recorded Investment
Recorded Investment, With no related allowance recorded	28	17
Recorded Investment, With allowance recorded	170	194
Allowance for Loan Losses Allocated	$ 5	$ 6

Loans and Leases and Allowan_11

Loans and Leases and Allowance for Credit Losses - Loans modified under terms of TDR (Details) - Loans Receivable $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)contract	Sep. 30, 2018USD ($)contract	Sep. 30, 2019USD ($)contract	Sep. 30, 2018USD ($)contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	11	14	38	42
Pre-modification Outstanding Recorded Investment	$ 824	$ 4,256	$ 3,048	$ 6,747
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 824	$ 4,220	$ 3,037	$ 6,618
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts | contract	0	0	2	5
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Recorded Investment	$ 0	$ 0	$ 148	$ 1,973
Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	106
Structure
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	702	4,032	2,726	6,088
Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 122	$ 188	$ 311	$ 424
Indirect auto
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	4	9	15	26
Pre-modification Outstanding Recorded Investment	$ 101	$ 188	$ 271	$ 424
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 101	$ 188	$ 262	$ 424
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts | contract	0	0	0	0
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Indirect auto | Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Indirect auto | Structure
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Indirect auto | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 101	$ 188	$ 262	$ 424
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	2	1	7	8
Pre-modification Outstanding Recorded Investment	$ 93	$ 3,647	$ 899	$ 5,137
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 93	$ 3,637	$ 899	$ 5,035
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts | contract	0	0	0	4
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Recorded Investment	$ 0	$ 0	$ 0	$ 1,872
Commercial | Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	106
Commercial | Structure
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	93	3,637	892	4,929
Commercial | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 7	$ 0
Commercial | Owner occupied commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	0	2	4
Pre-modification Outstanding Recorded Investment	$ 0	$ 0	$ 610	$ 1,276
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 610	$ 1,260
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts | contract	0	0	0	3
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Recorded Investment	$ 0	$ 0	$ 0	$ 1,869
Commercial | Owner occupied commercial real estate | Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Commercial | Owner occupied commercial real estate | Structure
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	610	1,260
Commercial | Owner occupied commercial real estate | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 0	$ 0
Commercial | Income producing commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	1	1	2
Pre-modification Outstanding Recorded Investment	$ 0	$ 3,647	$ 169	$ 3,753
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 3,637	$ 169	$ 3,743
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts | contract	0	0	0	0
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Commercial | Income producing commercial real estate | Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	106
Commercial | Income producing commercial real estate | Structure
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	3,637	169	3,637
Commercial | Income producing commercial real estate | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 0	$ 0
Commercial | Commercial & industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	0	1	2
Pre-modification Outstanding Recorded Investment	$ 0	$ 0	$ 7	$ 108
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 7	$ 32
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts | contract	0	0	0	0
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Commercial | Commercial & industrial | Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Commercial | Commercial & industrial | Structure
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	32
Commercial | Commercial & industrial | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 7	$ 0
Commercial | Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	0	0	0
Pre-modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 0	$ 0
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts | contract	0	0	0	1
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Recorded Investment	$ 0	$ 0	$ 0	$ 3
Commercial | Construction | Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Commercial | Construction | Structure
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Commercial | Construction | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 0	$ 0
Commercial | Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	2	0	3	0
Pre-modification Outstanding Recorded Investment	$ 93	$ 0	$ 113	$ 0
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 93	$ 0	$ 113	$ 0
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts | contract	0	0	0	0
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Commercial | Equipment financing | Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Commercial | Equipment financing | Structure
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	93	0	113	0
Commercial | Equipment financing | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 0	$ 0
Residential | Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	0	1	0
Pre-modification Outstanding Recorded Investment	$ 0	$ 0	$ 22	$ 0
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 21	$ 0
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts | contract	0	0	1	0
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Recorded Investment	$ 0	$ 0	$ 13	$ 0
Residential | Construction | Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Residential | Construction | Structure
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Residential | Construction | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 21	$ 0
Residential | Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	2	4	11	8
Pre-modification Outstanding Recorded Investment	$ 609	$ 421	$ 1,785	$ 1,186
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 609	$ 395	$ 1,784	$ 1,159
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts | contract	0	0	1	1
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Recorded Investment	$ 0	$ 0	$ 135	$ 101
Residential | Residential mortgage | Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Residential | Residential mortgage | Structure
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	609	395	1,784	1,159
Residential | Residential mortgage | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 0	$ 0
Residential | Home equity lines of credit
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	0	1	0
Pre-modification Outstanding Recorded Investment	$ 0	$ 0	$ 50	$ 0
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 50	$ 0
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts | contract	0	0	0	0
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Residential | Home equity lines of credit | Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Residential | Home equity lines of credit | Structure
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	50	0
Residential | Home equity lines of credit | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 0	$ 0	$ 0	$ 0
Consumer direct
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	3	0	3	0
Pre-modification Outstanding Recorded Investment	$ 21	$ 0	$ 21	$ 0
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 21	$ 0	$ 21	$ 0
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts | contract	0	0	0	0
Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Consumer direct | Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Consumer direct | Structure
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	0	0	0	0
Consumer direct | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-Modification Outstanding Recorded Investment by Type of Modification	$ 21	$ 0	$ 21	$ 0

Loans and Leases and Allowan_12

Loans and Leases and Allowance for Credit Losses - Average balances of impaired loans and income recognized on impaired loans (Details) - Loans Receivable - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Average balances of impaired loans and income recognized on impaired loans
Average Balance	$ 54,721	$ 58,470	$ 55,314	$ 60,968
Interest Revenue Recognized During Impairment	760	802	2,246	2,278
Cash Basis Interest Revenue Received	787	780	2,310	2,316
Indirect auto
Average balances of impaired loans and income recognized on impaired loans
Average Balance	1,069	1,220	1,121	1,274
Interest Revenue Recognized During Impairment	14	16	42	50
Cash Basis Interest Revenue Received	14	16	42	50
Commercial
Average balances of impaired loans and income recognized on impaired loans
Average Balance	35,180	40,794	36,222	43,095
Interest Revenue Recognized During Impairment	521	588	1,559	1,656
Cash Basis Interest Revenue Received	539	572	1,617	1,697
Commercial | Owner occupied commercial real estate
Average balances of impaired loans and income recognized on impaired loans
Average Balance	18,759	17,857	18,302	20,623
Interest Revenue Recognized During Impairment	288	291	846	771
Cash Basis Interest Revenue Received	290	284	882	800
Commercial | Income producing commercial real estate
Average balances of impaired loans and income recognized on impaired loans
Average Balance	10,906	18,623	12,941	17,155
Interest Revenue Recognized During Impairment	144	240	523	665
Cash Basis Interest Revenue Received	153	232	529	679
Commercial | Commercial & industrial
Average balances of impaired loans and income recognized on impaired loans
Average Balance	2,133	1,445	1,921	1,861
Interest Revenue Recognized During Impairment	48	18	74	83
Cash Basis Interest Revenue Received	54	17	89	83
Commercial | Construction
Average balances of impaired loans and income recognized on impaired loans
Average Balance	3,316	2,869	3,029	3,456
Interest Revenue Recognized During Impairment	38	39	113	137
Cash Basis Interest Revenue Received	39	39	114	135
Commercial | Equipment financing
Average balances of impaired loans and income recognized on impaired loans
Average Balance	66	0	29	0
Interest Revenue Recognized During Impairment	3	0	3	0
Cash Basis Interest Revenue Received	3	0	3	0
Residential | Construction
Average balances of impaired loans and income recognized on impaired loans
Average Balance	1,298	1,295	1,352	1,467
Interest Revenue Recognized During Impairment	22	23	70	72
Cash Basis Interest Revenue Received	25	23	72	71
Residential | Residential mortgage
Average balances of impaired loans and income recognized on impaired loans
Average Balance	16,669	14,654	16,134	14,587
Interest Revenue Recognized During Impairment	195	168	553	474
Cash Basis Interest Revenue Received	203	162	561	473
Residential | Home equity lines of credit
Average balances of impaired loans and income recognized on impaired loans
Average Balance	301	275	288	285
Interest Revenue Recognized During Impairment	4	3	11	12
Cash Basis Interest Revenue Received	2	3	7	11
Consumer direct
Average balances of impaired loans and income recognized on impaired loans
Average Balance	204	232	197	260
Interest Revenue Recognized During Impairment	4	4	11	14
Cash Basis Interest Revenue Received	$ 4	$ 4	$ 11	$ 14

Loans and Leases and Allowan_13

Loans and Leases and Allowance for Credit Losses - Recorded investment in nonaccrual loans by loan class (Details) - Loans Receivable - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	$ 30,832	$ 23,778
Indirect auto
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	595	726
Commercial
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	16,953	12,280
Commercial | Owner occupied commercial real estate
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	8,430	6,421
Commercial | Income producing commercial real estate
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	2,030	1,160
Commercial | Commercial & industrial
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	2,625	1,417
Commercial | Construction
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	1,894	605
Commercial | Equipment financing
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	1,974	2,677
Residential | Residential mortgage
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	9,475	8,035
Residential | Home equity lines of credit
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	3,065	2,360
Residential | Construction
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	597	288
Consumer direct
Recorded investment in nonaccrual loans by loan class
Nonaccrual Loans	$ 147	$ 89

Loans and Leases and Allowan_14

Loans and Leases and Allowance for Credit Losses - Aging of recorded investment in past due loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Recorded investment in nonaccrual loans by loan class
Loans Outstanding, Ending Balance	$ 8,903,266	$ 8,383,401
Loans Receivable
Recorded investment in nonaccrual loans by loan class
Loans Past Due	46,494	38,304
Loans Not Past Due	8,787,079	8,270,648
PCI Loans	69,693	74,449
Loans Outstanding, Ending Balance	8,903,266	8,383,401
Loans Receivable | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	27,193	22,405
Loans Receivable | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	5,100	7,765
Loans Receivable | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	14,201	8,134
Loans Receivable | Indirect auto
Recorded investment in nonaccrual loans by loan class
Loans Past Due	1,170	1,706
Loans Not Past Due	129,984	205,986
PCI Loans	0	0
Loans Outstanding, Ending Balance	131,154	207,692
Loans Receivable | Indirect auto | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	508	750
Loans Receivable | Indirect auto | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	142	323
Loans Receivable | Indirect auto | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	520	633
Loans Receivable | Commercial
Recorded investment in nonaccrual loans by loan class
Loans Past Due	32,327	22,056
Loans Not Past Due	6,536,671	6,014,967
PCI Loans	58,430	62,420
Loans Outstanding, Ending Balance	6,627,428	6,099,443
Loans Receivable | Commercial | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	18,475	12,973
Loans Receivable | Commercial | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	2,413	4,645
Loans Receivable | Commercial | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	11,439	4,438
Loans Receivable | Commercial | Owner occupied commercial real estate
Recorded investment in nonaccrual loans by loan class
Loans Past Due	9,306	6,450
Loans Not Past Due	1,673,169	1,631,602
PCI Loans	9,535	9,852
Loans Outstanding, Ending Balance	1,692,010	1,647,904
Loans Receivable | Commercial | Owner occupied commercial real estate | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	1,881	2,542
Loans Receivable | Commercial | Owner occupied commercial real estate | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	978	2,897
Loans Receivable | Commercial | Owner occupied commercial real estate | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	6,447	1,011
Loans Receivable | Commercial | Income producing commercial real estate
Recorded investment in nonaccrual loans by loan class
Loans Past Due	10,430	2,216
Loans Not Past Due	1,886,635	1,771,893
PCI Loans	36,803	38,311
Loans Outstanding, Ending Balance	1,933,868	1,812,420
Loans Receivable | Commercial | Income producing commercial real estate | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	9,422	1,624
Loans Receivable | Commercial | Income producing commercial real estate | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	93	291
Loans Receivable | Commercial | Income producing commercial real estate | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	915	301
Loans Receivable | Commercial | Commercial & industrial
Recorded investment in nonaccrual loans by loan class
Loans Past Due	8,735	8,307
Loans Not Past Due	1,262,148	1,269,632
PCI Loans	360	408
Loans Outstanding, Ending Balance	1,271,243	1,278,347
Loans Receivable | Commercial | Commercial & industrial | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	6,017	7,189
Loans Receivable | Commercial | Commercial & industrial | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	663	718
Loans Receivable | Commercial | Commercial & industrial | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	2,055	400
Loans Receivable | Commercial | Construction
Recorded investment in nonaccrual loans by loan class
Loans Past Due	248	335
Loans Not Past Due	993,552	789,916
PCI Loans	7,001	5,907
Loans Outstanding, Ending Balance	1,000,801	796,158
Loans Receivable | Commercial | Construction | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	116	267
Loans Receivable | Commercial | Construction | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	11	0
Loans Receivable | Commercial | Construction | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	121	68
Loans Receivable | Commercial | Equipment financing
Recorded investment in nonaccrual loans by loan class
Loans Past Due	3,608	4,748
Loans Not Past Due	721,167	551,924
PCI Loans	4,731	7,942
Loans Outstanding, Ending Balance	729,506	564,614
Loans Receivable | Commercial | Equipment financing | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	1,039	1,351
Loans Receivable | Commercial | Equipment financing | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	668	739
Loans Receivable | Commercial | Equipment financing | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	1,901	2,658
Loans Receivable | Residential | Construction
Recorded investment in nonaccrual loans by loan class
Loans Past Due	535	762
Loans Not Past Due	228,312	209,515
PCI Loans	505	734
Loans Outstanding, Ending Balance	229,352	211,011
Loans Receivable | Residential | Construction | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	314	509
Loans Receivable | Residential | Construction | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	71	63
Loans Receivable | Residential | Construction | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	150	190
Loans Receivable | Residential | Residential mortgage
Recorded investment in nonaccrual loans by loan class
Loans Past Due	7,725	9,199
Loans Not Past Due	1,104,126	1,030,883
PCI Loans	8,977	9,150
Loans Outstanding, Ending Balance	1,120,828	1,049,232
Loans Receivable | Residential | Residential mortgage | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	4,649	5,461
Loans Receivable | Residential | Residential mortgage | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	1,921	1,788
Loans Receivable | Residential | Residential mortgage | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	1,155	1,950
Loans Receivable | Residential | Home equity lines of credit
Recorded investment in nonaccrual loans by loan class
Loans Past Due	3,996	3,878
Loans Not Past Due	663,590	688,520
PCI Loans	1,401	1,612
Loans Outstanding, Ending Balance	668,987	694,010
Loans Receivable | Residential | Home equity lines of credit | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	2,620	2,112
Loans Receivable | Residential | Home equity lines of credit | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	479	864
Loans Receivable | Residential | Home equity lines of credit | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	897	902
Loans Receivable | Consumer direct
Recorded investment in nonaccrual loans by loan class
Loans Past Due	741	703
Loans Not Past Due	124,396	120,777
PCI Loans	380	533
Loans Outstanding, Ending Balance	125,517	122,013
Loans Receivable | Consumer direct | Loans Past Due, 30 - 59 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	627	600
Loans Receivable | Consumer direct | Loans Past Due, 60 - 89 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	74	82
Loans Receivable | Consumer direct | Loans Past Due, > 90 Days
Recorded investment in nonaccrual loans by loan class
Loans Past Due	$ 40	$ 21

Loans and Leases and Allowan_15

Loans and Leases and Allowance for Credit Losses - Risk category of loans by class of loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Risk category of loans by class of loans
Total loans	$ 8,903,266	$ 8,383,401
Pass
Risk category of loans by class of loans
Total loans	8,626,721	8,201,872
Watch
Risk category of loans by class of loans
Total loans	126,771	66,969
Substandard
Risk category of loans by class of loans
Total loans	149,774	114,560
Doubtful / Loss
Risk category of loans by class of loans
Total loans	0	0
Loans Receivable
Risk category of loans by class of loans
Total loans, excluding PCI loans	8,833,573	8,308,952
PCI Loans	69,693	74,449
Total loans	8,903,266	8,383,401
Loans Receivable | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	8,580,639	8,154,010
PCI Loans	46,082	47,862
Loans Receivable | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	112,674	50,556
PCI Loans	14,097	16,413
Loans Receivable | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	140,260	104,386
PCI Loans	9,514	10,174
Loans Receivable | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Indirect auto
Risk category of loans by class of loans
Total loans, excluding PCI loans	131,154	207,692
PCI Loans	0	0
Total loans	131,154	207,692
Loans Receivable | Indirect auto | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	129,306	205,632
PCI Loans	0	0
Loans Receivable | Indirect auto | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Indirect auto | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,848	2,060
PCI Loans	0	0
Loans Receivable | Indirect auto | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Commercial
Risk category of loans by class of loans
Total loans, excluding PCI loans	6,568,998	6,037,023
PCI Loans	58,430	62,420
Total loans	6,627,428	6,099,443
Loans Receivable | Commercial | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	6,336,255	5,900,234
PCI Loans	36,395	38,276
Loans Receivable | Commercial | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	112,674	50,537
PCI Loans	14,097	16,413
Loans Receivable | Commercial | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	120,069	86,252
PCI Loans	7,938	7,731
Loans Receivable | Commercial | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Commercial | Owner occupied commercial real estate
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,682,475	1,638,052
PCI Loans	9,535	9,852
Total loans	1,692,010	1,647,904
Loans Receivable | Commercial | Owner occupied commercial real estate | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,606,137	1,585,797
PCI Loans	1,905	3,352
Loans Receivable | Commercial | Owner occupied commercial real estate | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	32,725	16,651
PCI Loans	5,262	2,774
Loans Receivable | Commercial | Owner occupied commercial real estate | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	43,613	35,604
PCI Loans	2,368	3,726
Loans Receivable | Commercial | Owner occupied commercial real estate | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Commercial | Income producing commercial real estate
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,897,065	1,774,109
PCI Loans	36,803	38,311
Total loans	1,933,868	1,812,420
Loans Receivable | Commercial | Income producing commercial real estate | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,844,176	1,735,456
PCI Loans	26,499	23,430
Loans Receivable | Commercial | Income producing commercial real estate | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	25,451	20,923
PCI Loans	8,204	13,403
Loans Receivable | Commercial | Income producing commercial real estate | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	27,438	17,730
PCI Loans	2,100	1,478
Loans Receivable | Commercial | Income producing commercial real estate | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Commercial | Commercial & industrial
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,270,883	1,277,939
PCI Loans	360	408
Total loans	1,271,243	1,278,347
Loans Receivable | Commercial | Commercial & industrial | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,199,399	1,247,206
PCI Loans	86	266
Loans Receivable | Commercial | Commercial & industrial | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	32,105	8,430
PCI Loans	50	48
Loans Receivable | Commercial | Commercial & industrial | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	39,379	22,303
PCI Loans	224	94
Loans Receivable | Commercial | Commercial & industrial | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Commercial | Construction
Risk category of loans by class of loans
Total loans, excluding PCI loans	993,800	790,251
PCI Loans	7,001	5,907
Total loans	1,000,801	796,158
Loans Receivable | Commercial | Construction | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	963,742	777,780
PCI Loans	3,190	3,503
Loans Receivable | Commercial | Construction | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	22,393	4,533
PCI Loans	581	188
Loans Receivable | Commercial | Construction | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	7,665	7,938
PCI Loans	3,230	2,216
Loans Receivable | Commercial | Construction | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Commercial | Equipment financing
Risk category of loans by class of loans
Total loans, excluding PCI loans	724,775	556,672
PCI Loans	4,731	7,942
Total loans	729,506	564,614
Loans Receivable | Commercial | Equipment financing | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	722,801	553,995
PCI Loans	4,715	7,725
Loans Receivable | Commercial | Equipment financing | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Commercial | Equipment financing | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,974	2,677
PCI Loans	16	217
Loans Receivable | Commercial | Equipment financing | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Residential | Construction
Risk category of loans by class of loans
Total loans, excluding PCI loans	228,847	210,277
PCI Loans	505	734
Total loans	229,352	211,011
Loans Receivable | Residential | Construction | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	228,029	209,744
PCI Loans	467	687
Loans Receivable | Residential | Construction | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Residential | Construction | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	818	533
PCI Loans	38	47
Loans Receivable | Residential | Construction | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Residential | Residential mortgage
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,111,851	1,040,082
PCI Loans	8,977	9,150
Total loans	1,120,828	1,049,232
Loans Receivable | Residential | Residential mortgage | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	1,099,233	1,028,660
PCI Loans	7,505	6,914
Loans Receivable | Residential | Residential mortgage | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Residential | Residential mortgage | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	12,618	11,422
PCI Loans	1,472	2,236
Loans Receivable | Residential | Residential mortgage | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Residential | Home equity lines of credit
Risk category of loans by class of loans
Total loans, excluding PCI loans	667,586	692,398
PCI Loans	1,401	1,612
Total loans	668,987	694,010
Loans Receivable | Residential | Home equity lines of credit | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	663,087	688,493
PCI Loans	1,361	1,492
Loans Receivable | Residential | Home equity lines of credit | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Residential | Home equity lines of credit | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	4,499	3,905
PCI Loans	40	120
Loans Receivable | Residential | Home equity lines of credit | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	0	0
Loans Receivable | Consumer direct
Risk category of loans by class of loans
Total loans, excluding PCI loans	125,137	121,480
PCI Loans	380	533
Total loans	125,517	122,013
Loans Receivable | Consumer direct | Pass
Risk category of loans by class of loans
Total loans, excluding PCI loans	124,729	121,247
PCI Loans	354	493
Loans Receivable | Consumer direct | Watch
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	19
PCI Loans	0	0
Loans Receivable | Consumer direct | Substandard
Risk category of loans by class of loans
Total loans, excluding PCI loans	408	214
PCI Loans	26	40
Loans Receivable | Consumer direct | Doubtful / Loss
Risk category of loans by class of loans
Total loans, excluding PCI loans	0	0
PCI Loans	$ 0	$ 0

Reclassifications Out of Accu_3

Reclassifications Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Securities gains (losses), net	$ 0	$ 2	$ (118)	$ (1,302)
Salaries and employee benefits expense	(50,501)	(47,146)	(146,161)	(135,384)
Other expense	(8,507)	(8,236)	(23,687)	(23,425)
Merger-related and other charges	(2,541)	(115)	(6,981)	(4,449)
Income tax (expense) benefit	(13,983)	(13,090)	(40,106)	(37,370)
Net of tax	48,011	43,381	135,727	120,124
Reclassifications Out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	(1,369)	(379)	(2,102)	(2,233)
Reclassifications Out of Accumulated Other Comprehensive Income | Realized gains (losses) on available-for-sale securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Securities gains (losses), net	0	2	(118)	(1,302)
Income tax (expense) benefit	0	(5)	30	312
Net of tax	0	(3)	(88)	(990)
Reclassifications Out of Accumulated Other Comprehensive Income | Amortization of losses included in net income on available-for-sale securities transferred to held to maturity
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities interest revenue	(105)	(168)	(282)	(607)
Income tax (expense) benefit	25	40	67	149
Net of tax	(80)	(128)	(215)	(458)
Reclassifications Out of Accumulated Other Comprehensive Income | Amortization of losses included in net income on derivative financial instruments accounted for as cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Money market deposit interest expense	0	(105)	(102)	(395)
Other expense	0	0	(235)	0
Total before tax	0	(105)	(337)	(395)
Income tax (expense) benefit	0	27	86	103
Net of tax	0	(78)	(251)	(292)
Reclassifications Out of Accumulated Other Comprehensive Income | Prior service cost
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits expense	(158)	(167)	(476)	(501)
Reclassifications Out of Accumulated Other Comprehensive Income | Actuarial losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other expense	(16)	(60)	(45)	(180)
Reclassifications Out of Accumulated Other Comprehensive Income | Termination of defined benefit pension plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Merger-related and other charges	(1,558)	0	(1,558)	0
Reclassifications Out of Accumulated Other Comprehensive Income | Reclassifications related to defined benefit pension plan activity
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(1,732)	(227)	(2,079)	(681)
Income tax (expense) benefit	443	57	531	188
Net of tax	$ (1,289)	$ (170)	$ (1,548)	$ (493)

Earnings Per Share - Computatio

Earnings Per Share - Computation of basic and diluted earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Computation of basic and diluted earnings per share
Net income	$ 48,362	$ 43,682	$ 136,709	$ 120,974
Dividends and undistributed earnings allocated to unvested shares	(351)	(301)	(982)	(850)
Net income available to common shareholders	$ 48,011	$ 43,381	$ 135,727	$ 120,124
Weighted average shares outstanding:
Basic (in shares)	79,663	79,806	79,714	79,588
Effect of dilutive securities
Diluted (in shares)	79,667	79,818	79,718	79,598
Net income per common share:
Basic (in dollars per share)	$ 0.60	$ 0.54	$ 1.70	$ 1.51
Diluted (in dollars per share)	$ 0.60	$ 0.54	$ 1.70	$ 1.51
Stock Options
Effect of dilutive securities
Dilutive securities (in shares)	1	6	1	8
Restricted Stock Units
Effect of dilutive securities
Dilutive securities (in shares)	3	6	3	2

Earnings Per Share - Narrative

Earnings Per Share - Narrative (Details) - $ / shares	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Exercise price of warrants (in dollars per share)	$ 61.40		$ 61.40
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation (in shares)	33,283	1,000	32,283
Weighted average exercise price of stock options (in dollars per share)		$ 30.45
Warrant
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation (in shares)			219,909

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Derivatives designated as hedging instruments (Details) - Designated as Hedging Instrument - Fair value hedging - Derivative liabilities - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Derivatives accounted for as hedges, liability derivatives, fair value	$ 685	$ 1,682
Brokered CD's
Derivatives, Fair Value [Line Items]
Derivatives accounted for as hedges, liability derivatives, fair value	$ 685	$ 1,682

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Derivatives not designated as hedging instruments (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Derivative assets
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	$ 43,755	$ 24,705
Derivative assets | Customer derivative positions
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	37,081	5,216
Derivative assets | Dealer offsets to customer derivative positions
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	118	7,620
Derivative assets | Mortgage banking - loan commitment
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	2,732	1,190
Derivative assets | Mortgage banking - forward sales commitment
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	313	28
Derivative assets | Bifurcated embedded derivatives
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, assets at fair value	3,511	10,651
Derivative liabilities
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	15,559	24,751
Derivative liabilities | Customer derivative positions
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	122	9,661
Derivative liabilities | Dealer offsets to customer derivative positions
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	9,222	781
Derivative liabilities | Risk participations
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	14	8
Derivative liabilities | Mortgage banking - forward sales commitment
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	187	259
Derivative liabilities | Dealer offsets to bifurcated embedded derivatives
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	6,014	13,339
Derivative liabilities | De-designated hedges
Derivatives, Fair Value [Line Items]
Interest rate derivative instruments not designated as hedging instruments, liabilities at fair value	$ 0	$ 703

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)contract	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)contract	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)contract
Derivative Instruments, Gain (Loss) [Line Items]
Collateral pledged toward derivatives	$ 16,300		$ 16,300
Brokered deposits
Derivative Instruments, Gain (Loss) [Line Items]
Carrying value of hedged deposits	36,300		36,300
Cumulative fair value hedging adjustments	480		480
Fair value hedging of interest rate risk | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Net (increase) in interest expense or increase in interest revenue	$ (97)	$ (74)	$ (300)	$ (154)
Fair value hedging of interest rate risk | Interest revenue
Derivative Instruments, Gain (Loss) [Line Items]
Net (increase) in interest expense or increase in interest revenue				$ 17
Interest rate swaps | Fair value hedging of interest rate risk
Derivative Instruments, Gain (Loss) [Line Items]
Number of derivative contracts outstanding | contract	4		4		4
Total notional amount designated as fair flow hedges	$ 37,900		$ 37,900		$ 39,000
Not designated as hedging instrument, economic hedge | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Number of derivative contracts outstanding | contract	3		3

Derivatives and Hedging Activ_6

Derivatives and Hedging Activities - Derivatives in fair value hedging relationships (Details) - Fair value hedging - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Effect of fair value hedging derivative financial instruments on the consolidated statement of operations
Amount of Gain (Loss) Recognized in Income on Derivative	$ 71	$ (75)	$ 671	$ (1,248)
Amount of Gain (Loss) Recognized in Income on Hedged Item	(55)	(52)	(668)	923
Interest expense | Brokered CD's
Effect of fair value hedging derivative financial instruments on the consolidated statement of operations
Amount of Gain (Loss) Recognized in Income on Derivative	71	(75)	671	(912)
Amount of Gain (Loss) Recognized in Income on Hedged Item	$ (55)	$ (52)	(668)	518
Interest revenue | Corporate Bonds
Effect of fair value hedging derivative financial instruments on the consolidated statement of operations
Amount of Gain (Loss) Recognized in Income on Derivative			0	(336)
Amount of Gain (Loss) Recognized in Income on Hedged Item			$ 0	$ 405

Derivatives and Hedging Activ_7

Derivatives and Hedging Activities - Gains and losses recognized in income on derivatives not designated as hedging instruments (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	$ 599	$ 390	$ 1,335	$ 3,813
Customer derivatives and dealer offsets | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	649	611	2,376	2,028
Bifurcated embedded derivatives and dealer offsets | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	0	17	144	398
Interest rate caps | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative			0	276
De-designated hedges | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	0	(25)	(193)	(108)
Mortgage banking derivatives | Mortgage loan revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	(49)	(213)	(987)	1,207
Risk participations | Other noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	$ (1)	$ 0	$ (5)	$ 12

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Plan vesting period		4 years
Plan exercisable period		10 years
Additional awards remaining available under plan (in shares)	1,310,000	1,310,000
Stock options granted (in shares)		0	0
Income tax benefit related to expense for share-based awards		$ 1,960,000	$ 1,040,000
Acquisition-related Performance Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Plan vesting period		4 years
Acquisition-related Performance Grants | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Plan vesting period		10 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 0	18,000
Unrecognized compensation expense	$ 0	$ 0
Performance-based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted (in shares)	47,642
Fair market value of restricted stock awards granted (in dollars per share)	$ 26.32
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted (in shares)		301,301
Fair market value of restricted stock awards granted (in dollars per share)		$ 26.55
Unrecognized compensation expense	$ 16,500,000	$ 16,500,000
Recognition period for unrecognized compensation expense		2 years 7 months 6 days
Employees | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 7,400,000	3,790,000
Directors | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		283,000	$ 264,000
Merger-related and other charges | Employees | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense related to acceleration of vesting		1,380,000
Compensation expense related to acquisition		740,000
Compensation expense | Employees | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 5,280,000

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock option activity (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Shares
Exercised (in shares)	(12,000)	(12,000)
Stock Options
Shares
Outstanding, beginning balance (in shares)	47,139
Exercised (in shares)	(12,000)
Cancelled/Forfeited (in shares)	(2,396)
Expired (in shares)	(30,243)
Outstanding, ending balance (in shares)	2,500
Exercisable (in shares)	2,500
Weighted- Average Exercise Price
Outstanding, beginning balance (in dollars per share)	$ 27.07
Exercised (in dollars per share)	16.44
Cancelled/Forfeited (in dollars per share)	29.68
Expired (in dollars per share)	31.43
Outstanding, ending balance (in dollars per share)	22.81
Exercisable (in dollars per share)	$ 22.81
Weighted-Average Remaining Contractual Term (Years), Outstanding	1 year 10 months 24 days
Weighted-Average Remaining Contractual Term (Years), Exercisable	1 year 10 months 24 days
Aggregate Intrinsic Value, Outstanding	$ 16
Aggregate Intrinsic Value, Exercisable	$ 16

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted stock unit activity (Details) - Restricted Stock Units - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2019
Shares
Outstanding, beginning balance (in shares)	759,746
Granted (in shares)	301,301
Vested (in shares)	(171,177)
Cancelled (in shares)	(33,754)
Outstanding, ending balance (in shares)	856,116
Weighted- Average Grant- Date Fair Value
Outstanding, beginning balance (in dollars per share)	$ 27.66
Granted (in dollars per share)	26.55
Vested (in dollars per share)	24.42
Cancelled (in dollars per share)	25.79
Outstanding, ending balance (in dollars per share)	$ 27.99
Weighted-Average Remaining Contractual Term (Years), Outstanding	3 years 8 months 12 days
Aggregate Intrinsic Value, Vested	$ 4,589
Aggregate Intrinsic Value, Outstanding	$ 24,271

Common Stock (Details)

Common Stock (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Nov. 07, 2019
Common Stock Repurchase Program
Repurchase program authorized amount	$ 50,000,000	$ 50,000,000
Shares repurchased (in shares)	195,443	500,495	0
Repurchase program remaining authorization	$ 37,000,000	$ 37,000,000
Subsequent Event
Common Stock Repurchase Program
Repurchase program authorized amount				$ 50,000,000

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax provision	$ 13,983	$ 13,090	$ 40,106	$ 37,370
Effective tax rate (percent)	22.40%	23.10%	22.70%	23.60%
Valuation allowance on deferred tax assets	$ 3,370		$ 3,370		$ 3,370
Unrecognized income tax benefits	$ 3,260		$ 3,260		$ 3,260

Assets and Liabilities Measur_3

Assets and Liabilities Measured at Fair Value - Assets and liabilities measured at fair value on recurring basis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets:
Debt securities available for sale	$ 2,272,046	$ 2,628,467
Mortgage loans held for sale	54,600	18,900
Derivative financial instruments	43,755	24,705
Liabilities:
Derivative financial instruments	16,244	26,433
U.S. Treasuries
Assets:
Debt securities available for sale	154,632	149,307
State and political subdivisions
Assets:
Debt securities available for sale	227,325	233,941
Residential mortgage-backed securities
Assets:
Debt securities available for sale	1,256,633	1,445,910
Commercial mortgage-backed securities
Assets:
Debt securities available for sale	322,465	391,917
Corporate bonds
Assets:
Debt securities available for sale	201,195	199,163
Asset-backed securities
Assets:
Debt securities available for sale	106,621	182,676
Recurring
Assets:
Mortgage loans held for sale	54,625	18,935
Deferred compensation plan assets	7,668	6,404
Servicing rights for SBA/USDA loans	7,246	7,510
Residential mortgage servicing rights	11,089	11,877
Derivative financial instruments	43,755	24,705
Total assets	2,398,265	2,698,974
Liabilities:
Deferred compensation plan liability	7,680	6,404
Derivative financial instruments	16,244	26,433
Total liabilities	23,924	32,837
Recurring | U.S. Treasuries
Assets:
Debt securities available for sale	154,632	149,307
Recurring | U.S. Government agencies
Assets:
Debt securities available for sale	3,175	25,553
Recurring | State and political subdivisions
Assets:
Debt securities available for sale	227,325	233,941
Recurring | Residential mortgage-backed securities
Assets:
Debt securities available for sale	1,256,633	1,445,910
Recurring | Commercial mortgage-backed securities
Assets:
Debt securities available for sale	322,465	391,917
Recurring | Corporate bonds
Assets:
Debt securities available for sale	201,195	199,163
Recurring | Asset-backed securities
Assets:
Debt securities available for sale	106,621	182,676
Recurring | Equity securities with readily available fair values
Assets:
Debt securities available for sale	1,836	1,076
Recurring | Level 1
Assets:
Mortgage loans held for sale	0	0
Deferred compensation plan assets	7,668	6,404
Servicing rights for SBA/USDA loans	0	0
Residential mortgage servicing rights	0	0
Derivative financial instruments	0	0
Total assets	164,136	156,787
Liabilities:
Deferred compensation plan liability	7,680	6,404
Derivative financial instruments	0	0
Total liabilities	7,680	6,404
Recurring | Level 1 | U.S. Treasuries
Assets:
Debt securities available for sale	154,632	149,307
Recurring | Level 1 | U.S. Government agencies
Assets:
Debt securities available for sale	0	0
Recurring | Level 1 | State and political subdivisions
Assets:
Debt securities available for sale	0	0
Recurring | Level 1 | Residential mortgage-backed securities
Assets:
Debt securities available for sale	0	0
Recurring | Level 1 | Commercial mortgage-backed securities
Assets:
Debt securities available for sale	0	0
Recurring | Level 1 | Corporate bonds
Assets:
Debt securities available for sale	0	0
Recurring | Level 1 | Asset-backed securities
Assets:
Debt securities available for sale	0	0
Recurring | Level 1 | Equity securities with readily available fair values
Assets:
Debt securities available for sale	1,836	1,076
Recurring | Level 2
Assets:
Mortgage loans held for sale	54,625	18,935
Deferred compensation plan assets	0	0
Servicing rights for SBA/USDA loans	0	0
Residential mortgage servicing rights	0	0
Derivative financial instruments	37,512	12,864
Total assets	2,208,553	2,509,964
Liabilities:
Deferred compensation plan liability	0	0
Derivative financial instruments	9,531	10,701
Total liabilities	9,531	10,701
Recurring | Level 2 | U.S. Treasuries
Assets:
Debt securities available for sale	0	0
Recurring | Level 2 | U.S. Government agencies
Assets:
Debt securities available for sale	3,175	25,553
Recurring | Level 2 | State and political subdivisions
Assets:
Debt securities available for sale	227,325	233,941
Recurring | Level 2 | Residential mortgage-backed securities
Assets:
Debt securities available for sale	1,256,633	1,445,910
Recurring | Level 2 | Commercial mortgage-backed securities
Assets:
Debt securities available for sale	322,465	391,917
Recurring | Level 2 | Corporate bonds
Assets:
Debt securities available for sale	200,197	198,168
Recurring | Level 2 | Asset-backed securities
Assets:
Debt securities available for sale	106,621	182,676
Recurring | Level 2 | Equity securities with readily available fair values
Assets:
Debt securities available for sale	0	0
Recurring | Level 3
Assets:
Mortgage loans held for sale	0	0
Deferred compensation plan assets	0	0
Servicing rights for SBA/USDA loans	7,246	7,510
Residential mortgage servicing rights	11,089	11,877
Derivative financial instruments	6,243	11,841
Total assets	25,576	32,223
Liabilities:
Deferred compensation plan liability	0	0
Derivative financial instruments	6,713	15,732
Total liabilities	6,713	15,732
Recurring | Level 3 | U.S. Treasuries
Assets:
Debt securities available for sale	0	0
Recurring | Level 3 | U.S. Government agencies
Assets:
Debt securities available for sale	0	0
Recurring | Level 3 | State and political subdivisions
Assets:
Debt securities available for sale	0	0
Recurring | Level 3 | Residential mortgage-backed securities
Assets:
Debt securities available for sale	0	0
Recurring | Level 3 | Commercial mortgage-backed securities
Assets:
Debt securities available for sale	0	0
Recurring | Level 3 | Corporate bonds
Assets:
Debt securities available for sale	998	995
Recurring | Level 3 | Asset-backed securities
Assets:
Debt securities available for sale	0	0
Recurring | Level 3 | Equity securities with readily available fair values
Assets:
Debt securities available for sale	$ 0	$ 0

Assets and Liabilities Measur_4

Assets and Liabilities Measured at Fair Value - Reconciliation for measurements at fair value on a recurring basis using significant unobservable inputs (Details) - Recurring - Level 3 - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Asset
Reconciliation of Assets at Level 3 Measurement
Balance at beginning of period	$ 7,744	$ 14,510	$ 11,841	$ 12,207
Business combinations			0	0
Additions	0	0	0	0
Sales and settlements	0	0	(1,135)	(1,029)
Other comprehensive income	0	0	0	0
Amounts included in earnings - fair value adjustments	(1,501)	(94)	(4,463)	3,238
Balance at end of period	6,243	14,416	6,243	14,416
Servicing rights for SBA/USDA loans
Reconciliation of Assets at Level 3 Measurement
Balance at beginning of period	7,380	7,509	7,510	7,740
Business combinations			0	(354)
Additions	486	745	1,266	1,837
Sales and settlements	(286)	(242)	(837)	(649)
Other comprehensive income	0	0	0	0
Amounts included in earnings - fair value adjustments	(334)	(514)	(693)	(1,076)
Balance at end of period	7,246	7,498	7,246	7,498
Residential mortgage servicing rights
Reconciliation of Assets at Level 3 Measurement
Balance at beginning of period	10,679	10,801	11,877	8,262
Business combinations			0	0
Additions	1,789	1,397	3,880	3,505
Sales and settlements	(416)	(146)	(719)	(352)
Other comprehensive income	0	0	0	0
Amounts included in earnings - fair value adjustments	(963)	(21)	(3,949)	616
Balance at end of period	11,089	12,031	11,089	12,031
Debt Securities Available-for-Sale
Reconciliation of Assets at Level 3 Measurement
Balance at beginning of period	995	990	995	900
Business combinations			0	0
Additions	0	0	0	0
Sales and settlements	0	0	0	0
Other comprehensive income	3	5	3	95
Amounts included in earnings - fair value adjustments	0	0	0	0
Balance at end of period	998	995	998	995
Derivative Liability
Reconciliation of Liabilities at Level 3 Measurement
Balance at beginning of period	9,012	18,366	15,732	16,744
Business combinations			0	0
Additions	0	0	0	0
Sales and settlements	0	0	(2,330)	(1,347)
Other comprehensive income	0	0	0	0
Amounts included in earnings - fair value adjustments	(2,299)	379	(6,689)	3,348
Balance at end of period	$ 6,713	$ 18,745	$ 6,713	$ 18,745

Assets and Liabilities Measur_5

Assets and Liabilities Measured at Fair Value - Quantitative information about Level 3 fair value measurements for fair value on recurring basis (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities available for sale	$ 2,272,046	$ 2,628,467
Derivative assets	43,755	24,705
Derivative liabilities	16,244	26,433
Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights for SBA/USDA loans	7,246	7,510
Residential mortgage servicing rights	11,089	11,877
Derivative assets	43,755	24,705
Derivative liabilities	16,244	26,433
Recurring | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights for SBA/USDA loans	7,246	7,510
Residential mortgage servicing rights	11,089	11,877
Derivative assets	6,243	11,841
Derivative liabilities	6,713	15,732
Recurring | Level 3 | Servicing rights for SBA/USDA loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights for SBA/USDA loans	$ 7,246	$ 7,510
Valuation technique	Discounted cash flow
Recurring | Level 3 | Servicing rights for SBA/USDA loans | Discount Rate | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights for SBA/USDA loans, measurement input	0.118	0.145
Recurring | Level 3 | Servicing rights for SBA/USDA loans | Prepayment Rate | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights for SBA/USDA loans, measurement input	0.153	0.121
Recurring | Level 3 | Residential mortgage servicing rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Residential mortgage servicing rights	$ 11,089	$ 11,877
Valuation technique	Discounted cash flow
Recurring | Level 3 | Residential mortgage servicing rights | Discount Rate | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Residential mortgage servicing rights, measurement input	0.100	0.100
Recurring | Level 3 | Residential mortgage servicing rights | Prepayment Rate | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Residential mortgage servicing rights, measurement input	0.158	0.106
Recurring | Level 3 | Corporate bonds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities available for sale	$ 998	$ 995
Valuation technique	Indicative bid provided by a broker
Recurring | Level 3 | Derivative assets - mortgage
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	$ 2,732	$ 1,190
Valuation technique	Internal model
Recurring | Level 3 | Derivative assets - mortgage | Pull Through Rate | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets, measurement input	0.833	0.807
Recurring | Level 3 | Derivative assets - other
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	$ 3,511	$ 10,651
Valuation technique	Dealer priced
Recurring | Level 3 | Derivative liabilities - risk participations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liabilities	$ 14	$ 8
Valuation technique	Internal model
Recurring | Level 3 | Derivative liabilities - risk participations | Probable Exposure Rate | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liabilities, measurement input	0.0033	0.0044
Recurring | Level 3 | Derivative liabilities - risk participations | Probability of Default Rate | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liabilities, measurement input	0.0180	0.0180
Recurring | Level 3 | Derivative liabilities - other
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liabilities	$ 6,699	$ 15,724
Valuation technique	Dealer priced

Assets and Liabilities Measur_6

Assets and Liabilities Measured at Fair Value - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Mortgage loans held for sale	$ 54,600		$ 54,600		$ 18,900
Mortgage loans held for sale outstanding principal balance	53,100		53,100		$ 18,200
Net gains (losses) from changes in fair value of loans	$ (2)	$ (412)	$ 873	$ (157)

Assets and Liabilities Measur_7

Assets and Liabilities Measured at Fair Value - Assets and liabilities measured at fair value on nonrecurring basis (Details) - Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$ 9,119	$ 8,631
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$ 9,119	$ 8,631

Assets and Liabilities Measur_8

Assets and Liabilities Measured at Fair Value - Fair values for other financial instruments that are not measured at fair value on recurring basis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets:
Securities held to maturity	$ 248,546	$ 268,803
Carrying Amount
Assets:
Securities held to maturity	243,028	274,407
Loans and leases, net	8,840,752	8,322,198
Liabilities:
Deposits	10,756,517	10,534,513
Federal Home Loan Bank advances	40,000	160,000
Long-term debt	240,245	267,189
Fair Value
Assets:
Securities held to maturity	248,546	268,803
Loans and leases, net	8,804,331	8,277,387
Liabilities:
Deposits	10,756,838	10,528,834
Federal Home Loan Bank advances	39,998	159,988
Long-term debt	246,567	278,996
Fair Value | Level 1
Assets:
Securities held to maturity	0	0
Loans and leases, net	0	0
Liabilities:
Deposits	0	0
Federal Home Loan Bank advances	0	0
Long-term debt	0	0
Fair Value | Level 2
Assets:
Securities held to maturity	248,546	268,803
Loans and leases, net	0	0
Liabilities:
Deposits	10,756,838	10,528,834
Federal Home Loan Bank advances	39,998	159,988
Long-term debt	0	0
Fair Value | Level 3
Assets:
Securities held to maturity	0	0
Loans and leases, net	8,804,331	8,277,387
Liabilities:
Deposits	0	0
Federal Home Loan Bank advances	0	0
Long-term debt	$ 246,567	$ 278,996

Commitments and Contingencies -

Commitments and Contingencies - Contractual amount of off-balance sheet instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Commitments to extend credit
Financial instruments whose contract amounts represent credit risk:
Financial instruments	$ 2,138,428	$ 2,129,463
Letters of credit
Financial instruments whose contract amounts represent credit risk:
Financial instruments	$ 29,652	$ 25,447

Commitments and Contingencies_2

Commitments and Contingencies - Narrative (Details) $ in Thousands	Sep. 30, 2019USD ($)
Commitments and Contingencies Disclosure [Abstract]
Commitment for additional fund	$ 6,870

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Carrying amount (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Total intangible, net	$ 15,915		$ 16,960
Goodwill	327,425	$ 327,425	307,112	$ 307,112	$ 307,112	$ 220,591
Total goodwill and other intangible assets, net	343,340		324,072
Core deposit intangible
Finite-Lived Intangible Assets [Line Items]
Intangible, gross	65,452		62,652
Less: accumulated amortization	(49,537)		(46,141)
Total intangible, net	15,915		16,511
Noncompete agreements
Finite-Lived Intangible Assets [Line Items]
Intangible, gross	3,144		3,144
Less: accumulated amortization	(3,144)		(2,695)
Total intangible, net	$ 0		$ 449

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Changes in carrying amount of goodwill (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Goodwill [Roll Forward]
Goodwill, gross, beginning of period	$ 633,015	$ 612,702	$ 612,702	$ 526,181
Accumulated Impairment Losses, beginning of period	(305,590)	(305,590)	(305,590)	(305,590)
Goodwill, net of Accumulated Impairment Losses, beginning of period	327,425	307,112	307,112	220,591
Acquisitions	0	0	20,313	87,379
Measurement period adjustments		0		(858)
Goodwill, gross, end of period	633,015	612,702	633,015	612,702
Accumulated Impairment Losses, end of period	(305,590)	(305,590)	(305,590)	(305,590)
Goodwill, net of Accumulated Impairment Losses, end of period	$ 327,425	$ 307,112	$ 327,425	$ 307,112

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Estimated aggregate amortization expense for future periods (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Estimated Aggregate Amortization Expense For Future Periods
Remainder of 2019	$ 1,093
2020	3,842
2021	3,019
2022	2,379
2023	1,852
Thereafter	3,730
Total intangible, net	$ 15,915	$ 16,960

Operating Leases - Narrative (D

Operating Leases - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Leases [Abstract]
Right-of-use asset	$ 21,000
Lease liability	$ 23,272
Operating lease, weighted average remaining lease term (in years)	5 years 6 months 3 days
Operating lease, weighted average discount rate (percent)	2.79%
Rent Commitments Under Operating Leases Under Topic ASC 840
2019		$ 5,350
2020		5,160
2021		4,910
2022		4,480
2023		3,910
Thereafter		$ 5,040

Operating Leases - Operating le

Operating Leases - Operating lease income and expense and other supplemental information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Operating Lease Income and Expense
Operating lease cost	$ 1,272	$ 3,783
Variable lease cost	112	336
Short-term lease cost	52	92
Total lease cost	1,436	4,211
Sublease income and rental income from owned properties under operating leases	$ 261	$ 886

Operating Leases - Future Minim

Operating Leases - Future Minimum Lease Payments (Details) $ in Thousands	Sep. 30, 2019USD ($)
Future Minimum Lease Payments
Remainder of 2019	$ 939
2020	5,394
2021	5,124
2022	4,694
2023	3,992
Thereafter	5,092
Total	25,235
Less discount	(1,963)
Present value of lease liability	$ 23,272

Termination of Defined Benefi_2

Termination of Defined Benefit Plan (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Unrecognized losses previously in accumulated other comprehensive income (loss) recognized upon fund liquidation	$ 1,558	$ 1,558
Defined Benefits Plan | Funded Plan
Defined Benefit Plan Disclosure [Line Items]
United contributions to the plan	4,900
Unrecognized losses previously in accumulated other comprehensive income (loss) recognized upon fund liquidation	1,560
Pension plan settlement expense	1,380
Total settlement loss upon plan termination	$ (2,940)	$ 2,940

Subsequent Events - Narrative (

Subsequent Events - Narrative (Details) - $ / shares	Nov. 07, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Subsequent Event [Line Items]
Cash dividend declared per common share (in dollars per share)		$ 0.17	$ 0.15	$ 0.50	$ 0.42
Subsequent Event
Subsequent Event [Line Items]
Cash dividend declared per common share (in dollars per share)	$ 0.18
Dividend payable date	Jan. 6, 2020
Dividend date of record	Dec. 16, 2019

Uncategorized Items - ucbi93020

Label	Element	Value
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (549,000)