Glacier Bancorp (GBCI) 10-Q 30 Oct 20 2020 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2020	Oct. 15, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Document Transition Report	false
Entity File Number	000-18911
Entity Registrant Name	GLACIER BANCORP, INC.
Entity Incorporation, State or Country Code	MT
Entity Tax Identification Number	81-0519541
Entity Address, Address Line One	49 Commons Loop
Entity Address, City or Town	Kalispell,
Entity Address, State or Province	MT
Entity Address, Postal Zip Code	59901
City Area Code	(406)
Local Phone Number	756-4200
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	GBCI
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		95,414,850
Entity Central Index Key	0000868671
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets
Cash on hand and in banks	$ 249,245	$ 198,639
Federal funds sold	590	0
Interest bearing cash deposits	520,044	132,322
Cash and cash equivalents	769,879	330,961
Debt securities, available-for-sale	4,125,548	2,575,252
Debt securities, held-to-maturity	193,509	224,611
Total debt securities	4,319,057	2,799,863
Loans held for sale, at fair value	147,937	69,194
Loans receivable	11,618,731	9,512,810
Allowance for credit losses	(164,552)	(124,490)
Loans receivable, net	11,454,179	9,388,320
Premises and equipment, net	326,925	310,309
Other real estate owned	5,361	5,142
Accrued interest receivable	91,393	56,047
Deferred tax asset	0	2,037
Core deposit intangible, net	58,121	63,286
Goodwill	514,013	456,418
Non-marketable equity securities	10,366	11,623
Bank-owned life insurance	123,095	109,428
Other assets	105,741	81,371
Total assets	17,926,067	13,683,999
Liabilities
Non-interest bearing deposits	5,479,311	3,696,627
Interest bearing deposits	8,820,577	7,079,830
Securities sold under agreements to repurchase	965,668	569,824
Federal Home Loan Bank advances	7,318	38,611
Other borrowed funds	32,967	28,820
Subordinated debentures	139,918	139,914
Accrued interest payable	3,951	4,686
Deferred tax liability	17,227	0
Other liabilities	204,041	164,954
Total liabilities	15,670,978	11,723,266
Commitments and Contingent Liabilities
Stockholders’ Equity
Preferred shares, $0.01 par value per share, 1,000,000 shares authorized, none issued or outstanding	0	0
Common stock, $0.01 par value per share, 117,187,500 shares authorized	954	923
Paid-in capital	1,493,928	1,378,534
Retained earnings - substantially restricted	629,109	541,050
Accumulated other comprehensive income	131,098	40,226
Total stockholders' equity	2,255,089	1,960,733
Total liabilities and stockholders' equity	$ 17,926,067	$ 13,683,999
Number of common stock shares issued and outstanding (in shares)	95,413,743	92,289,750
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	1,000,000	1,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	117,187,500	117,187,500

Unaudited Condensed Consolida_2

Unaudited Condensed Consolidated Statements of Financial Condition (Parenthetical) - $ / shares	Sep. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Preferred shares, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred shares, authorized (in shares)	1,000,000	1,000,000
Preferred shares, issued (in shares)	0	0
Preferred shares, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	117,187,500	117,187,500

Unaudited Condensed Consolida_3

Unaudited Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest Income
Investment securities	$ 25,381	$ 21,357	$ 72,228	$ 64,600
Residential real estate loans	11,592	12,156	35,216	34,345
Commercial loans	109,514	97,224	314,541	268,806
Consumer and other loans	11,000	11,658	33,771	33,145
Total interest income	157,487	142,395	455,756	400,896
Interest Expense
Deposits	3,952	6,214	14,120	17,179
Securities sold under agreements to repurchase	886	999	2,783	2,687
Federal Home Loan Bank advances	70	2,035	684	8,937
Other borrowed funds	173	47	473	123
Subordinated debentures	1,003	1,652	3,705	5,014
Total interest expense	6,084	10,947	21,765	33,940
Net Interest Income	151,403	131,448	433,991	366,956
Credit loss expense	2,869	0	39,165	57
Net interest income after credit loss expense	148,534	131,448	394,826	366,899
Non-Interest Income
Service charges and other fees	13,404	15,138	38,790	53,178
Miscellaneous loan fees and charges	2,084	1,775	5,051	3,934
Gain on sale of loans	35,516	10,369	73,236	23,929
Gain on sale of debt securities	24	13,811	1,015	14,158
Other income	2,639	1,956	10,071	7,158
Total non-interest income	53,667	43,049	128,163	102,357
Non-Interest Expense
Compensation and employee benefits	64,866	62,509	182,507	167,210
Occupancy and equipment	9,369	8,731	27,945	25,348
Advertising and promotions	2,779	2,719	7,404	7,874
Data processing	5,597	4,466	15,921	12,420
Other real estate owned	186	166	373	496
Regulatory assessments and insurance	1,495	593	3,622	3,726
Loss on termination of hedging activities	0	13,528	0	13,528
Core deposit intangibles amortization	2,612	2,360	7,758	5,919
Other expenses	18,786	15,603	50,229	43,154
Total non-interest expense	105,690	110,675	295,759	279,675
Income Before Income Taxes	96,511	63,822	227,230	189,581
Federal and state income tax expense	18,754	12,212	42,690	36,447
Net Income	$ 77,757	$ 51,610	$ 184,540	$ 153,134
Basic earnings per share (in dollars per share)	$ 0.81	$ 0.57	$ 1.95	$ 1.76
Diluted earnings per share (in dollars per share)	0.81	0.57	1.95	1.76
Dividends declared per share (in dollars per share)	$ 0.30	$ 0.29	$ 0.88	$ 0.82
Average outstanding shares - basic (in shares)	95,411,656	90,294,811	94,704,198	86,911,402
Average outstanding shares - diluted (in shares)	95,442,576	90,449,195	94,747,894	87,082,178

Unaudited Condensed Consolida_4

Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 77,757	$ 51,610	$ 184,540	$ 153,134
Other Comprehensive Income, Net of Tax
Unrealized gains on available-for-sale securities	1,693	11,113	123,262	87,442
Reclassification adjustment for gains included in net income	(24)	(13,811)	(1,014)	(14,166)
Net unrealized gains (losses) on available-for-sale securities	1,669	(2,698)	122,248	73,276
Tax effect	(424)	684	(30,979)	(18,568)
Net of tax amount	1,245	(2,014)	91,269	54,708
Unrealized losses on derivatives used for cash flow hedges	(76)	(1,393)	(532)	(7,047)
Reclassification adjustment for losses included in net income	0	10,315	0	10,816
Net unrealized (losses) gains on derivatives used for cash flow hedges	(76)	8,922	(532)	3,769
Tax effect	20	(2,261)	135	(955)
Net of tax amount	(56)	6,661	(397)	2,814
Total other comprehensive income, net of tax	1,189	4,647	90,872	57,522
Total Comprehensive Income	$ 78,946	$ 56,257	$ 275,412	$ 210,656

Unaudited Condensed Consolida_5

Unaudited Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Paid-in Capital	Retained Earnings Substantially Restricted	Retained Earnings Substantially RestrictedCumulative Effect, Period of Adoption, Adjustment	Accumulated Other Compre- hensive (Loss) Income
Balance, beginning (in shares) at Dec. 31, 2018			84,521,692
Balance, beginning at Dec. 31, 2018	$ 1,515,854	$ (25,458)	$ 845	$ 1,051,253	$ 473,183	$ (25,458)	$ (9,427)
Increase (Decrease) in Stockholders' Equity
Net income	153,134				153,134
Other comprehensive income	57,522						57,522
Cash dividends declared	(72,260)				(72,260)
Stock issued in connection with acquisitions (in shares)			7,519,617
Stock issued in connection with acquisitions	316,538		$ 75	316,463
Stock issuances under stock incentive plans (in shares)			139,309
Stock issuances under stock incentive plans	0		$ 2	(2)
Stock-based compensation and related taxes	8,071			8,071
Balance, ending (in shares) at Sep. 30, 2019			92,180,618
Balance, ending at Sep. 30, 2019	$ 1,953,401		$ 922	1,375,785	$ 528,599		48,095
Increase (Decrease) in Stockholders' Equity
Cash dividends declared per share (in dollars per share)	$ 0.82				$ 0.82
Balance, beginning (in shares) at Jun. 30, 2019			86,637,394
Balance, beginning at Jun. 30, 2019	$ 1,687,376		$ 866	1,139,289	$ 503,773		43,448
Increase (Decrease) in Stockholders' Equity
Net income	51,610				51,610
Other comprehensive income	4,647						4,647
Cash dividends declared	(26,784)				(26,784)
Stock issued in connection with acquisitions (in shares)			5,473,276
Stock issued in connection with acquisitions	229,385		$ 55	229,330
Stock issuances under stock incentive plans (in shares)			69,948
Stock issuances under stock incentive plans	0		$ 1	(1)
Stock-based compensation and related taxes	7,167			7,167
Balance, ending (in shares) at Sep. 30, 2019			92,180,618
Balance, ending at Sep. 30, 2019	$ 1,953,401		$ 922	1,375,785	$ 528,599		48,095
Increase (Decrease) in Stockholders' Equity
Cash dividends declared per share (in dollars per share)	$ 0.29				$ 0.29
Balance, beginning (in shares) at Dec. 31, 2019	92,289,750		92,289,750
Balance, beginning at Dec. 31, 2019	$ 1,960,733	$ (12,347)	$ 923	1,378,534	$ 541,050	$ (12,347)	40,226
Increase (Decrease) in Stockholders' Equity
Net income	184,540				184,540
Other comprehensive income	90,872						90,872
Cash dividends declared	(84,134)				(84,134)
Stock issued in connection with acquisitions (in shares)			3,007,044
Stock issued in connection with acquisitions	112,133		$ 30	112,103
Stock issuances under stock incentive plans (in shares)			116,949
Stock issuances under stock incentive plans	0		$ 1	(1)
Stock-based compensation and related taxes	$ 3,292			3,292
Balance, ending (in shares) at Sep. 30, 2020	95,413,743		95,413,743
Balance, ending at Sep. 30, 2020	$ 2,255,089		$ 954	1,493,928	$ 629,109		131,098
Increase (Decrease) in Stockholders' Equity
Cash dividends declared per share (in dollars per share)	$ 0.88				$ 0.88
Balance, beginning (in shares) at Jun. 30, 2020			95,409,061
Balance, beginning at Jun. 30, 2020	$ 2,203,715		$ 954	1,492,817	$ 580,035		129,909
Increase (Decrease) in Stockholders' Equity
Net income	77,757				77,757
Other comprehensive income	1,189						1,189
Cash dividends declared	(28,683)				(28,683)
Stock issuances under stock incentive plans (in shares)			4,682
Stock issuances under stock incentive plans	0		$ 0	0
Stock-based compensation and related taxes	$ 1,111			1,111
Balance, ending (in shares) at Sep. 30, 2020	95,413,743		95,413,743
Balance, ending at Sep. 30, 2020	$ 2,255,089		$ 954	$ 1,493,928	$ 629,109		$ 131,098
Increase (Decrease) in Stockholders' Equity
Cash dividends declared per share (in dollars per share)	$ 0.30				$ 0.30

Unaudited Condensed Consolida_6

Unaudited Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Cash dividends declared per share (in dollars per share)	$ 0.30	$ 0.29	$ 0.88	$ 0.82
Retained Earnings Substantially Restricted
Cash dividends declared per share (in dollars per share)	$ 0.30	$ 0.29	$ 0.88	$ 0.82

Unaudited Condensed Consolida_7

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Operating Activities
Net income	$ 184,540	$ 153,134
Adjustments to reconcile net income to net cash provided by operating activities:
Credit loss expense	39,165	57
Net amortization of debt securities	10,830	11,687
Net accretion of purchase accounting adjustments and deferred loan fees and costs	(23,369)	(2,680)
Amortization of debt modification costs	0	4,630
Origination of loans held for sale	(1,393,224)	(671,038)
Proceeds from loans held for sale	1,400,697	633,085
Gain on sale of loans	(73,236)	(23,929)
Gain on sale of debt securities	(1,015)	(14,158)
Bank-owned life insurance income, net	(2,059)	(1,629)
Stock-based compensation, net of tax benefits	2,829	6,554
Depreciation and amortization of premises and equipment	15,124	13,713
Gain on sale and write-downs of other real estate owned, net	(64)	(288)
Amortization of core deposit intangibles	7,758	5,919
Amortization of investments in variable interest entities	8,244	6,767
Net increase in accrued interest receivable	(33,558)	(5,348)
Net increase in other assets	(22,729)	(367)
Net (decrease) increase in accrued interest payable	(861)	61
Net decrease in other liabilities	(5,315)	(1,730)
Net cash provided by operating activities	113,757	114,440
Investing Activities
Sales of available-for-sale debt securities	0	711,268
Maturities, prepayments and calls of available-for-sale debt securities	545,191	457,299
Purchases of available-for-sale debt securities	(1,839,308)	(839,835)
Maturities, prepayments and calls of held-to-maturity debt securities	29,530	48,940
Principal collected on loans	2,978,796	2,497,073
Loan originations	(4,627,653)	(2,900,692)
Net additions to premises and equipment	(8,140)	(14,230)
Proceeds from sale of other real estate owned	2,140	2,960
Proceeds from redemption of non-marketable equity securities	76,275	115,436
Purchases of non-marketable equity securities	(71,397)	(93,397)
Investments in variable interest entities	(7,975)	(7,956)
Net cash received from acquisitions	43,713	79,334
Net cash (used in) provided by investing activities	(2,878,828)	56,200
Financing Activities
Net increase in deposits	2,920,429	377,986
Net increase in securities sold under agreements to repurchase	388,595	161,191
Net decrease in short-term Federal Home Loan Bank advances	(30,000)	(285,000)
Proceeds from long-term Federal Home Loan Bank advances	30,000	0
Repayments of long-term Federal Home Loan Bank advances	(31,271)	(151,073)
Net increase in other borrowed funds	463	97
Cash dividends paid	(73,999)	(70,970)
Tax withholding payments for stock-based compensation	(1,023)	(277)
Proceeds from stock option exercises	795	0
Net cash provided by financing activities	3,203,989	31,954
Net increase in cash, cash equivalents and restricted cash	438,918	202,594
Cash, cash equivalents and restricted cash at beginning of period	330,961	203,790
Cash, cash equivalents and restricted cash at end of period	769,879	406,384
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest	22,626	33,878
Cash paid during the period for income taxes	43,944	33,032
Supplemental Disclosure of Non-Cash Investing and Financing Activities
Sale and refinancing of other real estate owned	215	7
Transfer of loans to other real estate owned	2,062	2,347
Right-of-use assets obtained in exchange for operating lease liabilities	7,343	3,910
Dividends declared during the period but not paid	28,799	26,874
Acquisitions
Fair value of common stock shares issued	112,133	316,538
Cash consideration	13,721	16,424
Fair value of assets acquired	745,420	1,190,267
Liabilities assumed	$ 619,565	$ 1,024,141

Nature of Operations and Summar

Nature of Operations and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations and Summary of Significant Accounting Policies	Nature of Operations and Summary of Significant Accounting Policies General Glacier Bancorp, Inc. (“Company”) is a Montana corporation headquartered in Kalispell, Montana. The Company provides a full range of banking services to individuals and businesses in Montana, Idaho, Utah, Washington, Wyoming, Colorado, Arizona and Nevada through its wholly-owned bank subsidiary, Glacier Bank (“Bank”). The Company offers a wide range of banking products and services, including: 1) retail banking; 2) business banking; 3) real estate, commercial, agriculture and consumer loans; and 4) mortgage origination services. The Company serves individuals, small to medium-sized businesses, community organizations and public entities. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments necessary for a fair presentation of the results for the interim periods. All such adjustments are of a normal recurring nature. These interim financial statements do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements and they should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. Operating results for the nine months ended September 30, 2020 are not necessarily indicative of the results anticipated for the year ending December 31, 2020. The condensed consolidated statement of financial condition of the Company as of December 31, 2019 has been derived from the audited consolidated statements of the Company as of that date. The Company is a defendant in legal proceedings arising in the normal course of business. In the opinion of management, the disposition of pending litigation will not have a material affect on the Company’s consolidated financial position, results of operations or liquidity. Material estimates that are particularly susceptible to significant change include: 1) the determination of the allowance for credit losses (“ACL” or “allowance”) on loans; 2) the valuation of debt securities; 3) the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans; and 4) the evaluation of goodwill impairment. For the determination of the ACL on loans and real estate valuation estimates, management obtains independent appraisals (new or updated) for significant items. Estimates relating to the valuation of debt securities are obtained from independent third parties. Estimates relating to the evaluation of goodwill for impairment are determined based on internal calculations using significant independent party inputs. Principles of Consolidation The consolidated financial statements of the Company include the parent holding company and the Bank, which consists of sixteen bank divisions and a corporate division. The corporate division includes the Bank’s investment portfolio, wholesale borrowings and other centralized functions. The Bank divisions operate under separate names, management teams and advisory directors. The Company considers the Bank to be its sole operating segment as the Bank 1) engages in similar bank business activity from which it earns revenues and incurs expenses; 2) the operating results of the Bank are regularly reviewed by the Chief Executive Officer (“CEO”) (i.e., the chief operating decision maker) who makes decisions about resources to be allocated to the Bank; and 3) financial information is available for the Bank. All significant inter-company transactions have been eliminated in consolidation. The Bank has subsidiary interests in variable interest entities (“VIE”) for which the Bank has both the power to direct the VIE’s significant activities and the obligation to absorb losses or right to receive benefits of the VIE that could potentially be significant to the VIE. These subsidiary interests are included in the Company’s consolidated financial statements. The Bank also has subsidiary interests in VIEs for which the Bank does not have a controlling financial interest and is not the primary beneficiary. These subsidiary interests are not included in the Company’s consolidated financial statements. The parent holding company owns non-bank subsidiaries that have issued trust preferred securities. The trust subsidiaries are not included in the Company’s consolidated financial statements. The Company's investments in the trust subsidiaries are included in other assets on the Company's statements of financial condition. On February 29, 2020, the Company completed the acquisition of State Bank Corp. , the bank holding company for State Bank of Arizona, a community bank based in Lake Havasu City, Arizona (collectively, “SBAZ” ) . The business combination was accounted for using the acquisition method, with the results of operations included in the Company’s consolidated financial statements as of the acquisition date. For additional information relating to mergers and acquisitions, see Note 13. De bt Securities On January 1, 2020, the Company adopted Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2016-13, Financial Instruments - Credit Losses , which significantly changed the allowance for credit loss accounting policies for debt securities. The following debt securities and allowance for credit loss accounting policies are presented under Accounting Standards Codification™ (“ASC”) Topic 326, whereas prior periods are presented as described in the Company’s 2019 Annual Report on Form 10-K. Debt securities for which the Company has the positive intent and ability to hold to maturity are classified as held-to-maturity and are carried at amortized cost. Debt securities held primarily for the purpose of selling in the near term are classified as trading securities and are reported at fair value, with unrealized gains and losses included in income. Debt securities not classified as held-to-maturity or trading are classified as available-for-sale and are reported at fair value with unrealized gains and losses, net of income taxes, as a separate component of other comprehensive income (“OCI”). Premiums and discounts on debt securities are amortized or accreted into income using a method that approximates the interest method. The objective of the interest method is to calculate periodic interest income at a constant effective yield. The Company does not have any debt securities classified as trading securities. When the Company acquires another entity, it designates all debt securities as available-for-sale at acquisition date and records the debt securities at fair value. The Company reviews and analyzes the various risks that may be present within the investment portfolio on an ongoing basis, including market risk, credit risk and liquidity risk. Market risk is the risk to an entity’s financial condition resulting from adverse changes in the value of its holdings arising from movements in interest rates, foreign exchange rates, equity prices or commodity prices. The Company assesses the market risk of individual debt securities as well as the investment portfolio as a whole. Credit risk, broadly defined, is the risk that an issuer or counterparty will fail to perform on an obligation. The credit rating of a security is considered the primary credit quality indicator for debt securities. Liquidity risk refers to the risk that a security will not have an active and efficient market in which the security can be sold. A debt security is investment grade if the issuer has adequate capacity to meet its commitment over the expected life of the investment, i.e., the risk of default is low and full and timely repayment of interest and principal is expected. To determine investment grade status for debt securities, the Company conducts due diligence of the creditworthiness of the issuer or counterparty prior to acquisition and ongoing thereafter consistent with the risk characteristics of the security and the overall risk of the investment portfolio. Credit quality due diligence takes into account the extent to which a security is guaranteed by the U.S. government and other agencies of the U.S. government. The depth of the due diligence is based on the complexity of the structure, the size of the security, and takes into account material positions and specific groups of securities or stratifications for analysis and review of similar risk positions. The due diligence includes consideration of payment performance, collateral adequacy, internal analyses, third party research and analytics, external credit ratings and default statistics. The Company has acquired debt securities through acquisitions and if the securities have more than insignificant credit deterioration since origination, they are designated as purchased credit-deteriorated (“PCD”) securities. An ACL is determined using the same methodology as with other debt securities. The sum of a security’s purchase price and ACL becomes the initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the debt security is a noncredit discount or premium, which is amortized into interest income over the life of the security. Subsequent changes to the allowance are recorded through credit loss expense. For additional information relating to debt securities, see Note 2. Allowance for Credit Losses - Available-for-Sale Debt Securities For available-for-sale debt securities in an unrealized loss position, the Company first assesses whether it intends to sell, or it is more-likely-than-not that it will be required to sell the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security’s amortized cost basis is written down to fair value through other expense. For the available-for-sale securities that do not meet the aforementioned criteria, the Company evaluates whether the decline in fair value has resulted from cred it losses or other factors. In such assessment, the Company considers the extent to which fair value is less than amortized cost, if there are any changes to the investment grade of the security by a rating agency, and if there any adverse conditions that impact the security. If this assessment indicates a credit loss exists, the present value of the cash flows expected to be collected from the security is compared to the amortized cost basis of the s ecurity. If the present value of the cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an ACL is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost. Any estimated credit losses that have not been recorded through an ACL are recognized in OCI. The Company has elected to exclude accrued interest from the estimate of credit losses for available-for-sale debt securities. As part of its non-accrual policy, the Company charges-off uncollectable interest at the time it is determined to be uncollectable. Allowance for Credit Losses - Held-to-Maturity Debt Securities For estimating the allowance for held-to-maturity debt securities that share similar risk characteristics with other securities, such securities are pooled based on major security type. For pools of such securities with similar risk characteristics, the historical lifetime probability of default and severity of loss in the event of default is derived or obtained from external sources and adjusted for the expected effects of reasonable and supportable forecasts over the expected lives of the securities on those historical credit losses. Expected credit losses on securities in the held-to-maturity portfolio that do not share similar risk characteristics with any of the pools of debt securities are individually measured based on net realizable value, or the difference between the discounted value of the expected future cash flows, based on the original effective interest rate, and the recorded amortized cost basis of the securities. The Company has elected to exclude accrued interest from the estimate of credit losses for held-to-maturity debt securities. As part of its non-accrual policy, the Company charges off uncollectable interest at the time it is determined to be uncollectable. Loans Receivable On January 1, 2020, the Company adopted FASB ASU 2016-13, Financial Instruments - Credit Losses , which significantly changed the loan and allowance for credit loss accounting policies. The following loan and allowance for credit loss accounting policies are presented under ASC Topic 326, whereas prior periods are presented in accordance with the incurred loss model as disclosed in the Company’s 2019 Annual Report on Form 10-K. The Company’s loan segments or classes are based on the purpose of the loan and consist of residential real estate, commercial real estate, other commercial, home equity, and other consumer loans. Loans that are intended to be held-to-maturity are reported at the unpaid principal balance less net c harge-offs and adjusted for deferred fees and costs on originated loans and unamortized premiums or discounts on acquired loans. Fees and costs on originated loans and premiums or discounts on acquired loans are deferred and subsequently amortized or accreted as a yield adjustment over the expected life of the loan utilizing the interest or straight-line methods. The interest method is utilized for loans with scheduled payment terms and the objective is to calculate periodic interest income at a constant effective yield. The straight-line method is utilized for revolving lines of credit or loans with no scheduled payment terms. When a loan is paid off prior to maturity, the remaining fees and costs on originated loans and premiums or discounts on acquired loans are immediately recognized into interest income. Loans that are thirty days or more past due based on payments received and applied to the loan are considered delinquent. Loans are designated non-accrual and the accrual of interest is discontinued when the collection of the contractual principal or interest is unlikely. A loan is typically placed on non-accrual when principal or interest is due and has remained unpaid for ninety days or more. When a loan is placed on non-accrual status, interest previously accrued but not collected is reversed against current period interest income. Subsequent payments on non-accrual loans are applied to the outstanding principal balance if doubt remains as to the ultimate collectability of the loan. Interest accruals are not resumed on partially charged-off loans. For other loans on non-accrual, interest accruals are resumed on such loans only when the loan is brought fully current with respect to interest and principal and when, in the judgment of management, the loans are estimated to be fully collectible as to both principal and interest. The Company has acquired loans through acquisitions, some of which have experienced more than insignificant credit deterioration since origination. The Company considers all acquired non-accrual loans to be PCD loans. In addition, the Company considers loans accruing ninety days or more past due with estimated credit losses or substandard loans with estimated credit losses to be PCD loans. An ACL is determined using the same methodology as other loans held for investment. The ACL determined on a collective basis is allocated to individual loans. The sum of a loan’s purchase price and ACL becomes the initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. Subsequent changes to the ACL are recorded through credit loss expense. For additional information relating to loans, see Note 3. Allowance for Credit Losses - Loans Receivable The allowance for credit losses for loans receivable represents management’s estimate of credit losses over the expected contractual life of the loan portfolio. The estimate is determined based on the amortized cost of the loan portfolio including the loan balance adjusted for charge-offs, recoveries, deferred fees and costs, and loan discount and premiums. Recoveries are included only to the extent that such amounts were previously charged-off. The Company has elected to exclude accrued interest from the estimate of credit losses for loans. Determining the adequacy of the allowance is complex and requires a high degree of judgment by management about the effect of matters that are inherently uncertain. Subsequent evaluations of the then-existing loan portfolio, in light of the factors then prevailing, may result in significant changes in the allowance in those future periods. The allowance is increased for estimated credit losses which is recorded as expense. The portion of loans and overdraft balances determined by management to be uncollectible are charged-off as a reduction to the allowance and recoveries of amounts previously charged-off increase the allowance. The Company’s charge-off policy is consistent with bank regulatory standards. Consumer loans generally are charged-off when the loan becomes over 120 days delinquent. Real estate acquired as a result of foreclosure or by deed-in-lieu of foreclosure is classified as other real estate owned (“OREO”) until such time as it is sold. The expected credit loss estimate process involves procedures to consider the unique characteristics of each of its portfolio segments, which consist of residential real estate, commercial real estate, other commercial, home equity, and other consumer loans. When computing the allowance levels, credit loss assumptions are estimated using a model that categorizes loan pools based on loss history, credit and risk characteristics, including current conditions and reasonable and supportable forecasts about the future. The Company has determined a four consecutive quarter forecasting period is a reasonable and supportable period. Expected credit loss for periods beyond reasonable and supportable forecast periods are determined based on a reversion method which reverts back to historical loss estimate over a four consecutive quarter period on a straight-line basis. Credit quality is assessed and monitored by evaluating various attributes and the results of those evaluations are utilized in underwriting new loans and the process for estimating the expected credit losses. The following paragraphs describe the risk characteristics relevant to each portfolio segment. Residential Real Estate. Residential real estate loans are secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans is impacted by economic conditions within the Company’s market areas that affect the value of the property securing the loans and affect the borrowers' personal incomes. Mitigating risk factors for this loan segment include a large number of borrowers, geographic dispersion of market areas and the loans are originated for relatively smaller amounts. Commercial Real Estate . Commercial real estate loans typically involve larger principal amounts, and repayment of these loans is generally dependent on the successful operation of the property securing the loan and/or the business conducted on the property securing the loan. Credit risk in these loans is impacted by the creditworthiness of a borrower, valuation of the property securing the loan and conditions within the local economies in the Company’s diverse, geographic market areas. Commercial . Commercial loans consist of loans to commercial customers for use in financing working capital needs, equipment purchases and business expansions. The loans in this segment are repaid primarily from the cash flow of a borrower’s principal business operation. Credit risk in these loans is driven by creditworthiness of a borrower and the economic conditions that impact the cash flow stability from business operations across the Company’s diverse, geographic market areas. Home Equity . Home equity loans consist of junior lien mortgages and first and junior lien lines of credit (revolving open-end and amortizing closed-end) secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans is impacted by economic conditions within the Company’s market areas that affect the value of the residential property securing the loans and affect the borrowers' personal incomes. Mitigating risk factors for this loan segment are a large number of borrowers, geographic dispersion of market areas and the loans are originated for terms that range from 10 to 15 years. Other Consumer . The other consumer loan portfolio consists of various short-term loans such as automobile loans and loans for other personal purposes. Repayment of these loans is primarily dependent on the personal income of the borrowers. Credit risk is driven by consumer economic factors (such as unemployment and general economic conditions in the Company’s diverse, geographic market area) and the creditworthiness of a borrower. The allowance is impacted by loan volumes, delinquency status, credit ratings, historical loss experiences, prepayment speeds, weighted average lives and other conditions influencing loss expectations, such as reasonable and supportable forecasts of economic conditions. The methodology for estimating the amount of expected credit losses reported in the allowance has two basic components: 1) individual loans that do not share similar risk characteristics with other loans and the measurement of expected credit losses for such individual loans; and 2) the expected credit losses for pools of loans that share similar risk characteristics. Loans that do not Share Similar Risk Characteristics with Other Loans. For a loan that does not share similar risk characteristics with other loans, expected credit loss is measured based on the net realizable value, that is, the difference between the discounted value of the expected future cash flows, based on the original effective interest rate, and the amortized cost basis of the loan. For these loans, the expected credit loss is equal to the amount by which the net realizable value of the loan is less than the amortized cost basis of the loan (which is net of previous charge-offs and deferred loan fees and costs), except when the loan is collateral-dependent, that is, when foreclosure is probable or the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In these cases, expected credit loss is measured as the difference between the amortized cost basis of the loan and the fair value of the collateral. The fair value of the collateral is adjusted for the estimated cost to sell if repayment or satisfaction of a loan is dependent on the sale (rather than only on the operation) of the collateral. The Company has determined that non-accrual loans do not share similar risk characteristics with other loans and these loans are individually evaluated for estimated allowance for credit losses. The Company, through its credit monitoring process, may also identify other loans that do no share similar risk characteristics and individually evaluate such loans. The starting point for determining the fair value of collateral is to obtain external appraisals or evaluations (new or updated) which are generally obtained annually. The valuation techniques used in preparing appraisals or evaluations (new or updated) include the cost approach, income approach, sales comparison approach, or a combination of the preceding valuation techniques. The Company’s credit department reviews appraisals, giving consideration to the highest and best use of the collateral. The appraisals or evaluations (new or updated) are reviewed at least quarterly and more frequently based on current market conditions, including deterioration in a borrower’s financial condition and when property values may be subject to significant volatility. Adjustments may be made to the fair value of the collateral after review and acceptance of the collateral appraisal or evaluation (new or updated). Loans that Share Similar Risk Characteristics with other Loans. For estimating the allowance for loans that share similar risk characteristics with other loans, such loans are segregated into loan segments. Loans are designated into loan segments based on loans pooled by product types and similar risk characteristics or areas of risk concentration. In determining the ACL, the Company derives an estimated credit loss assumption from a model that categorizes loan pools based on loan type which is further segregated by the credit quality indicators. This model calculates an expected loss percentage for each loan segment by considering the non-discounted simple annual average historical loss rate of each loan segment (calculated through an “open pool” method), multiplying the loss rate by the amortized loan balance and incorporating that segment’s internally generated prepayment speed assumption and contractually scheduled remaining principal pay downs on a loan level basis. The annual historical loss rates are adjusted over a reasonable economic forecast period by a multiplier that is calculated based upon current national economic forecasts as a proportion of each segment’s historical average loss levels. The Company will then revert from the economic forecast period back to the historical average loss rate in a straight-line basis. After the reversion period, the loans will be assumed to experience their historical loss rate for the remainder of their contractual lives. The model applies the expected loss rate over the projected cash flows at the the individual loan level and then aggregates the losses by loan segment in determining their quantitative allowance. The Company will also include qualitative adjustments to adjust the p ortfolio over the remaining lives of the loans to the extent the current or future market conditions are believed to vary substantially from historical conditions in regards to: • lending policies and procedures; • i nternational, national, regional and local economic business conditions and developments that affect the collectability of the portfolio, including the condition of various markets; • the nature and volume of the loan portfolio including the terms of the loans; • the experience, ability, and depth of the lending management and other relevant staff; • the volume and severity of past due and adversely classified or graded loans and the volume of non-accrual loans; • the quality of our loan review system; • the value of underlying collateral for collateralized loans; • the existence and effect of any concentrations of credit, and changes in the level of concentrations; and • the effect of external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the existing portfolio. The Company regularly reviews loans in the portfolio to assess credit quality indicators and to determine the appropriate loan classification and grading in accordance with applicable bank regulations. The primary credit quality indicator for residential and consumer loans is the days past due status, which consists of the following categories: 1) performing loans; 2) 30 to 89 days past due loans; and 3) non-accrual and ninety days or more past due loans. The primary credit quality indicator for commercial loans is the Company’s internal risk rating system, which includes the following categories: 1) pass loans; 2) special mention loans; 3) substandard loans; and 4) doubtful or loss loans. Such credit quality indicators are regularly monitored and incorporated into the Company’s allowance estimate. The following paragraphs further define the internal risk ratings for commercial loans. Pass Loans. These ratings represent loans that are of acceptable, good or excellent quality with very limited to no risk. Loans that do not have one of the following ratings are considered pass loans. Special Mention Loans. These ratings represent loans that are assigned special mention per the regulatory definition. Special mention loans are currently protected but are potentially weak. The credit risk may be relatively minor yet constitute an undue and unwarranted risk in light of the circumstances surrounding a specific loan. The rating may be used to identify credit with potential weaknesses that if not corrected may weaken the loan to the point of inadequately protecting the bank’s credit position. Examples include a lack of supervision, inadequate loan agreement, condition, or control of collateral, incomplete, or improper documentation, deviations from lending policy, and adverse trends in operations or economic conditions. Substandard Loans. This rating represents loans that are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged. A loan so classified must have a well-defined weakness that jeopardizes the liquidation of the debt. These loans are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. Loss potential, while existing in the aggregated amount of substandard loans, does not have to exist in an individual loan classified substandard. Doubtful/Loss Loans. A loan classified as doubtful has the characteristics that make collection in full, on the basis of currently existing facts, conditions, and values, highly improbable. The possibility of loss is extremely high, but because of pending factors, which may work to the advantage and strengthening of the loan, its classification as loss is deferred until its more exact status may be determined. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral and refinancing plans. Loans are classified as loss when they are deemed to be not collectible and of such little value that continuance as an active asset of the Bank is not warranted. Loans classified as loss must be charged-off. Assignment of this classification does not mean that an asset has absolutely no recovery or salvage value, but that it is not practical or desirable to defer writing off a basically worthless asset, even though partial recovery may be attained in the future. Restructured Loans A restructured loan is considered a troubled debt restructuring (“TDR”) if the creditor, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. The Company periodically enters into restructure agreements with borrowers whereby the loans were previously identified as TDRs. When such circumstances occur, the Company carefully evaluates the facts of the subsequent restructure to determine the appropriate accounting and under certain circumstances it may be acceptable not to account for the subsequently restructured loan as a TDR. When assessing whether a concession has been granted by the Company, any prior forgiveness on a cumulative basis is considered a continuing concession. The Company has made the following types of loan modifications, some of which were considered a TDR: • reduction of the stated interest rate for the remaining term of the debt; • extension of the maturity date(s) at a stated rate of interest lower than the current market rate for newly originated debt having similar risk characteristics; and • reduction of the face amount of the debt as stated in the debt agreements. The Company recognizes that while borrowers may experience deterioration in their financial condition, many continue to be creditworthy borrowers who have the willingness and capacity for debt repayment. In determining whether non-restructured or performing loans issued to a single or related party group of borrowers should continue to accrue interest when the borrower has other loans that are non-performing or are TDRs, the Company on a quarterly or more frequent basis performs an updated and comprehensive assessment of the willingness and capacity of the borrowers to timely and ultimately repay their total debt obligations, including contingent obligations. Such anal

Debt Securities

Debt Securities	9 Months Ended
	Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Debt Securities	Debt Securities The following tables present the amortized cost, the gross unrealized gains and losses and the fair value of the Company’s debt securities: September 30, 2020 (Dollars in thousands) Amortized Gross Gross Fair Available-for-sale U.S. government and federal agency $ 40,082 297 (239) 40,140 U.S. government sponsored enterprises 9,767 58 — 9,825 State and local governments 1,192,905 82,509 (38) 1,275,376 Corporate bonds 347,400 13,647 (23) 361,024 Residential mortgage-backed securities 1,255,016 21,551 (709) 1,275,858 Commercial mortgage-backed securities 1,104,252 59,075 (2) 1,163,325 Total available-for-sale $ 3,949,422 177,137 (1,011) 4,125,548 Held-to-maturity State and local governments $ 193,509 13,068 — 206,577 Total held-to-maturity $ 193,509 13,068 — 206,577 December 31, 2019 (Dollars in thousands) Amortized Gross Gross Fair Available-for-sale U.S. government and federal agency $ 20,061 48 (65) 20,044 U.S. government sponsored enterprises 42,724 953 — 43,677 State and local governments 679,784 22,694 (80) 702,398 Corporate bonds 155,665 1,938 (1) 157,602 Residential mortgage-backed securities 731,766 7,507 (549) 738,724 Commercial mortgage-backed securities 891,374 22,825 (1,392) 912,807 Total available-for-sale $ 2,521,374 55,965 (2,087) 2,575,252 Held-to-maturity State and local governments $ 224,611 9,785 — 234,396 Total held-to-maturity $ 224,611 9,785 — 234,396 Maturity Analysis The following table presents the amortized cost and fair value of available-for-sale and held-to-maturity debt securities by contractual maturity at September 30, 2020. Actual maturities may differ from expected or contractual maturities since some issuers have the right to prepay obligations with or without prepayment penalties. September 30, 2020 Available-for-Sale Held-to-Maturity (Dollars in thousands) Amortized Cost Fair Value Amortized Cost Fair Value Due within one year $ 119,874 121,303 — — Due after one year through five years 264,927 277,758 19,543 20,996 Due after five years through ten years 263,208 277,022 69,924 75,680 Due after ten years 942,145 1,010,282 104,042 109,901 1,590,154 1,686,365 193,509 206,577 Mortgage-backed securities 1 2,359,268 2,439,183 — — Total $ 3,949,422 4,125,548 193,509 206,577 ______________________________ 1 Mortgage-backed securities, which have prepayment provisions, are not assigned to maturity categories due to fluctuations in their prepayment speeds. Sales and Calls of Debt Securities Proceeds from sales and calls of debt securities and the associated gains and losses that have been included in earnings are listed below: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Available-for-sale Proceeds from sales and calls of debt securities $ 69,304 401,701 184,088 878,072 Gross realized gains 1 102 14,329 1,206 18,613 Gross realized losses 1 (78) (518) (192) (4,447) Held-to-maturity Proceeds from calls of debt securities 9,280 16,365 29,530 48,940 Gross realized gains 1 — — 1 2 Gross realized losses 1 — — — (10) ______________________________ 1 The gain or loss on the sale or call of each debt security is determined by the specific identification method. Allowance for Credit Losses - Available-For-Sale Debt Securities In assessing whether a credit loss existed on available-for-sale debt securities with unrealized losses, the Company compared the present value of cash flows expected to be collected from the debt securities with the amortized cost basis of the debt securities. In addition, the following factors were evaluated individually and collectively in determining the existence of expected credit losses: • credit ratings from Nationally Recognized Statistical Rating Organizations (“NRSRO” entities such as Standard and Poor’s [“S&P”] and Moody’s); • severity of the impaired securities; • adverse conditions, if any, specifically related to the impaired securities, including the industry and geographic area; • the overall deal and payment structure of the debt securities, including the investor entity’s position within the structure, underlying obligors, financial condition and near-term prospects of the issuer, including specific events which may affect the issuer’s operations or future earnings, and credit support or enhancements; and • failure of the issuer and underlying obligors, if any, to make scheduled payments of interest and principal. The following table summarizes available-for-sale debt securities that were in an unrealized loss position for which an ACL has not been recorded, based on the length of time the individual securities have been in an unrealized loss position. The number of available-for-sale debt securities in an unrealized position is also disclosed. September 30, 2020 Number Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Available-for-sale U.S. government and federal agency 19 $ 13,656 (230) 663 (9) 14,319 (239) State and local governments 11 5,383 (38) — — 5,383 (38) Corporate bonds 6 11,029 (23) — — 11,029 (23) Residential mortgage-backed securities 28 282,912 (709) 27 — 282,939 (709) Commercial mortgage-backed securities 1 11,035 (2) — — 11,035 (2) Total available-for-sale 65 $ 324,015 (1,002) 690 (9) 324,705 (1,011) December 31, 2019 Number Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Available-for-sale U.S. government and federal agency 20 $ 464 — 9,902 (65) 10,366 (65) State and local governments 12 19,044 (80) — — 19,044 (80) Corporate bonds 2 7,378 (1) — — 7,378 (1) Residential mortgage-backed securities 35 85,562 (234) 29,038 (315) 114,600 (549) Commercial mortgage-backed securities 19 177,051 (1,293) 7,697 (99) 184,748 (1,392) Total available-for-sale 88 $ 289,499 (1,608) 46,637 (479) 336,136 (2,087) With respect to severity, the majority of available-for-sale debt securities with unrealized loss positions at September 30, 2020 have unrealized losses as a percentage of book value of less than five percent. A substantial portion of such securities were issued by Federal National Mortgage Association (“Fannie Mae”), Federal Home Loan Mortgage Corporation (“Freddie Mac”), Government National Mortgage Association (“Ginnie Mae”) and other agencies of the U.S. government or have credit ratings issued by one or more of the NRSRO entities in the four highest credit rating categories. All of the Company’s available-for-sale debt securities with unrealized loss positions at September 30, 2020 have been determined to be investment grade. As of September 30, 2020, the Company did not have any available-for-sale debt securities past due. Accrued interest receivable on available-for-sale debt securities totaled $23,491,000 at September 30, 2020 and was excluded from the estimate of credit losses. During the period ended September 30, 2020, the Company acquired available-for-sale debt securities from the secondary market and through the SBAZ acquisition. Such securities were evaluated and it was determined there were no PCD securities, so no allowance for credit losses was recorded. Based on an analysis of its available-for-sale debt securities with unrealized losses as of September 30, 2020, the Company determined the decline in value was unrelated to credit loss and was primarily the result of changes in interest rates and market spreads subsequent to acquisition. The fair value of the debt securities is expected to recover as payments are received and the debt securities approach maturity. In addition, as of September 30, 2020, management determined it did not intend to sell available-for-sale debt securities with unrealized losses, and there was no expected requirement to sell such securities before recovery of their amortized cost. As a result, no ACL was recorded on available-for-sale debt securities at September 30, 2020. As part of this determination, the Company considered contractual obligations, regulatory constraints, liquidity, capital, asset/liability management and securities portfolio objectives and whether or not any of the Company’s investment securities were managed by third-party investment funds. Allowance for Credit Losses - Held-To-Maturity Debt Securities The Company measured expected credit losses on held-to-maturity debt securities on a collective basis by major security type and NRSRO credit ratings, which is the Company’s primary credit quality indicator for state and local government securities. The estimate of expected credit losses considered historical credit loss information that was adjusted for current conditions as well as reasonable and supportable forecasts. The following table summarizes the amortized cost of held-to-maturity debt securities aggregated by NRSRO credit rating: (Dollars in thousands) September 30, December 31, Held-to-maturity S&P: AAA / Moody’s: Aaa $ 40,735 65,217 S&P: AA+, AA, AA- / Moody’s: Aa1, Aa2, Aa3 125,573 130,316 S&P: A+, A, A- / Moody’s: A1, A2, A3 27,201 28,689 Not rated by either entity — 389 Total held-to-maturity $ 193,509 224,611 The Company’s held-to-maturity debt securities portfolio is primarily comprised of general obligation and revenue bonds with NRSRO ratings in the four highest credit rating categories. All of the Company’s held-to-maturity debt securities at September 30, 2020 have been determined to be investment grade. As of September 30, 2020, the Company did not have any held-to-maturity debt securities past due. Accrued interest receivable on held-to-maturity debt securities totaled $2,079,000 at September 30, 2020 and was excluded from the estimate of credit losses. Based on the Company’s evaluation, an insignificant amount of credit losses is expected on the held-to-maturity debt securities portfolio; therefore, no ACL was recorded at September 30, 2020.

Loans Receivable, Net

Loans Receivable, Net	9 Months Ended
	Sep. 30, 2020
Receivables [Abstract]
Loans Receivable, Net	Loans Receivable, Net On January 1, 2020, the Company adopted FASB ASU 2016-13, Financial Instruments - Credit Losses , which significantly changed the loan and allowance for credit loss accounting disclosures. The following loan and allowance for credit loss accounting disclosures are presented in accordance with ASC Topic 326, whereas prior periods are presented in accordance with the incurred loss model as disclosed in the Company’s 2019 Annual Report on Form 10-K. The following table presents loans receivable for each portfolio segment of loans: (Dollars in thousands) September 30, December 31, Residential real estate $ 862,614 926,388 Commercial real estate 6,201,817 5,579,307 Other commercial 3,593,322 2,094,254 Home equity 646,850 617,201 Other consumer 314,128 295,660 Loans receivable 11,618,731 9,512,810 Allowance for credit losses (164,552) (124,490) Loans receivable, net $ 11,454,179 9,388,320 Net deferred origination (fees) costs included in loans receivable $ (38,712) (6,964) Net purchase accounting (discounts) premiums included in loans receivable $ (18,063) (21,574) Accrued interest receivable on loans $ 65,806 40,962 Substantially all of the Company’s loans receivable are with borrowers in the Company’s geographic market areas. Although the Company has a diversified loan portfolio, a substantial portion of borrowers’ ability to service their obligations is dependent upon the economic performance in the Company’s market areas. The Company had no significant sales of loans or reclassification of loans held for investment to loans held for sale during the nine months ended September 30, 2020. Allowance for Credit Losses - Loans Receivable The ACL is a valuation account that is deducted from the amortized cost basis to present the net amount expected to be collected on loans. The following tables summarize the activity in the ACL: Three Months ended September 30, 2020 (Dollars in thousands) Total Residential Commercial Other Home Other Balance at beginning of period $ 162,509 9,986 89,104 48,838 9,962 4,619 Credit loss expense (reversal) 2,869 (216) 5,208 1,199 (2,526) (796) Charge-offs (2,630) — (445) (1,598) (99) (488) Recoveries 1,804 35 530 314 93 832 Balance at end of period $ 164,552 9,805 94,397 48,753 7,430 4,167 Three Months ended September 30, 2019 (Dollars in thousands) Total Residential Commercial Other Home Other Balance at beginning of period $ 129,054 10,695 72,447 36,259 5,801 3,852 Credit loss expense (reversal) — (325) (1,480) 1,220 (777) 1,362 Charge-offs (5,890) (141) (1,858) (1,399) — (2,492) Recoveries 2,371 8 549 778 17 1,019 Balance at end of period $ 125,535 10,237 69,658 36,858 5,041 3,741 Nine Months ended September 30, 2020 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 124,490 10,111 69,496 36,129 4,937 3,817 Impact of adopting CECL 3,720 3,584 10,533 (13,759) 3,400 (38) Acquisitions 49 — 49 — — — Credit loss expense (reversal) 39,165 (3,923) 14,084 28,358 (860) 1,506 Charge-offs (7,865) (21) (625) (3,471) (293) (3,455) Recoveries 4,993 54 860 1,496 246 2,337 Balance at end of period $ 164,552 9,805 94,397 48,753 7,430 4,167 Nine Months ended September 30, 2019 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 131,239 10,631 72,448 38,160 5,811 4,189 Credit loss expense (reversal) 57 (152) (1,824) (524) (786) 3,343 Charge-offs (12,090) (482) (2,267) (2,597) (28) (6,716) Recoveries 6,329 240 1,301 1,819 44 2,925 Balance at end of period $ 125,535 10,237 69,658 36,858 5,041 3,741 As a result of the adoption of the CECL accounting standard, the Company adjusted the January 1, 2020 ACL balances within each loan segment to reflect the changes from the incurred loss model to the current expected credit loss model which resulted in increases and decreases in each loan segment based on, among other factors, quantitative and qualitative assumptions and the economic forecast to estimate the credit loss expense over the expected life of the loans. During the nine months ended September 30, 2020, primarily as a result of the COVID-19 pandemic, there was a significant increase in the overall ACL and increases and decreases within certain loan segments. In addition, the acquisition of SBAZ resulted in a $4,794,000 increase in the ACL due to the credit loss expense recorded subsequent to the acquisition date. The COVID-19 pandemic significantly adjusted the economic forecast used in the ACL model including a significant increase in national and regional unemployment rates and a significant decrease in the gross domestic product (“GDP”). The most notable change in charge-offs was in the other consumer loan segment which was primarily driven by deposit overdraft charge-offs which typically experience high charge-off rates and the amounts were comparable to historical trends. During the nine months ended September 30, 2020, there have been no significant changes to the types of collateral securing collateral-dependent loans. During the nine month period ended September 30, 2020, the Company acquired loans through the SBAZ acquisition. Such loans were evaluated at acquisition date and it was determined there were PCD loans totaling $3,401,000 with an ACL of $49,000. There was also a discount associated with such loans of $13,000, which was attributable to changes in interest rates and other factors such as liquidity as of acquisition date. Aging Analysis The following tables present an aging analysis of the amortized cost basis of loans: September 30, 2020 (Dollars in thousands) Total Residential Commercial Other Home Other Accruing loans 30-59 days past due $ 9,534 520 2,662 2,782 2,160 1,410 Accruing loans 60-89 days past due 8,097 1,666 2,954 2,263 977 237 Accruing loans 90 days or more past due 2,952 217 1,426 1,102 80 127 Non-accrual loans with no ACL 32,047 3,213 16,318 9,441 2,804 271 Non-accrual loans with ACL 4,303 275 1,980 1,930 87 31 Total past due and non-accrual loans 56,933 5,891 25,340 17,518 6,108 2,076 Current loans receivable 11,561,798 856,723 6,176,477 3,575,804 640,742 312,052 Total loans receivable $ 11,618,731 862,614 6,201,817 3,593,322 646,850 314,128 December 31, 2019 (Dollars in thousands) Total Residential Commercial Other Home Other Accruing loans 30-59 days past due $ 15,944 3,403 4,946 4,685 1,040 1,870 Accruing loans 60-89 days past due 7,248 749 2,317 1,190 1,902 1,090 Accruing loans 90 days or more past due 1,412 753 64 143 — 452 Non-accrual loans 30,883 4,715 15,650 6,592 3,266 660 Total past due and non-accrual loans 55,487 9,620 22,977 12,610 6,208 4,072 Current loans receivable 9,457,323 916,768 5,556,330 2,081,644 610,993 291,588 Total loans receivable $ 9,512,810 926,388 5,579,307 2,094,254 617,201 295,660 The Company had $628,000 of interest reversed on non-accrual loans during the nine months ended September 30, 2020. Collateral-Dependent Loans A loan is considered collateral-dependent when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. The following table presents the amortized cost basis of collateral-dependent loans by collateral type: September 30, 2020 (Dollars in thousands) Total Residential Commercial Other Home Other Business assets $ 5,080 — 84 4,996 — — Residential real estate 4,201 1,536 658 — 1,954 53 Other real estate 13,572 31 12,880 624 21 16 Other 132 — — 16 — 116 Total $ 22,985 1,567 13,622 5,636 1,975 185 Restructured Loans A restructured loan is considered a TDR if the creditor, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. The following tables present the loans modified as TDRs that occurred during the periods presented and the TDRs that occurred within the previous twelve months that subsequently defaulted: Three Months ended September 30, 2020 (Dollars in thousands) Total Residential Commercial Other Home Other TDRs that occurred during the period Number of loans 6 — 5 1 — — Pre-modification recorded balance $ 7,482 — 6,648 834 — — Post-modification recorded balance $ 7,482 — 6,648 834 — — TDRs that subsequently defaulted Number of loans — — — — — — Recorded balance $ — — — — — — Three Months ended September 30, 2019 (Dollars in thousands) Total Residential Commercial Other Home Other TDRs that occurred during the period Number of loans 6 — 4 2 — — Pre-modification recorded balance $ 3,168 — 3,067 101 — — Post-modification recorded balance $ 3,168 — 3,067 101 — — TDRs that subsequently defaulted Number of loans — — — — — — Recorded balance $ — — — — — — Nine Months ended September 30, 2020 (Dollars in thousands) Total Residential Commercial Other Home Other TDRs that occurred during the period Number of loans 16 1 10 4 1 — Pre-modification recorded balance $ 14,945 210 13,392 1,304 39 — Post-modification recorded balance $ 14,945 210 13,392 1,304 39 — TDRs that subsequently defaulted Number of loans — — — — — — Recorded balance $ — — — — — — Nine Months ended September 30, 2019 (Dollars in thousands) Total Residential Commercial Other Home Other TDRs that occurred during the period Number of loans 14 1 5 4 1 3 Pre-modification recorded balance $ 5,261 117 4,102 668 103 271 Post-modification recorded balance $ 5,247 123 4,102 668 103 251 TDRs that subsequently defaulted Number of loans 1 — — — — 1 Recorded balance $ 305 — — — — 305 The modifications for the loans designated as TDRs during the nine months ended September 30, 2020 and 2019 included one or a combination of the following: an extension of the maturity date, a reduction of the interest rate or a reduction in the principal amount. In addition to the loans designated as TDRs during the period provided in the preceding tables, the Company had TDRs with pre-modification loan balances of $2,265,000 and $2,982,000 for the nine months ended September 30, 2020 and 2019, respectively, for which OREO was received in full or partial satisfaction of the loans. The majority of such TDRs were in commercial real estate for the nine months ended September 30, 2020 and 2019. At September 30, 2020 and December 31, 2019, the Company had $765,000 and $1,744,000, respectively, of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process. At September 30, 2020 and December 31, 2019, the Company had $1,917,000 and $1,504,000, respectively, of OREO secured by residential real estate properties. Credit Quality Indicators The Company categorizes commercial real estate and other commercial loans into risk categories based on relevant information about the ability of borrowers to service their obligations. The following tables present the amortized cost in commercial real estate and other commercial loans based on the Company’s internal risk rating. The date of a modification, renewal or extension of a loan is considered for the year of origination if the terms of the loan are as favorable to the Company as the terms are for a comparable loan to other borrowers with similar credit risk. September 30, 2020 (Dollars in thousands) Total Pass Special Mention Substandard Doubtful/ Commercial real estate loans Term loans by origination year 2020 (year-to-date) $ 1,023,640 1,018,529 697 4,414 — 2019 1,149,893 1,141,014 335 8,544 — 2018 986,619 947,230 1,190 38,199 — 2017 786,907 756,583 — 30,324 — 2016 526,236 507,694 206 18,336 — Prior 1,581,948 1,546,314 — 35,286 348 Revolving loans 146,574 143,265 691 2,617 1 Total $ 6,201,817 6,060,629 3,119 137,720 349 Other commercial loans Term loans by origination year 2020 (year-to-date) $ 1,790,810 1,784,359 606 5,845 — 2019 335,126 330,303 — 4,820 3 2018 281,578 275,011 — 6,566 1 2017 287,150 281,371 — 5,323 456 2016 191,092 188,849 — 2,066 177 Prior 239,070 229,806 — 8,100 1,164 Revolving loans 468,496 453,105 — 14,416 975 Total $ 3,593,322 3,542,804 606 47,136 2,776 For residential real estate, home equity and other consumer loan segments, the Company evaluates credit quality primarily on the aging status of the loan. The following tables present the amortized cost in residential real estate, home equity and other consumer loans based on payment performance: September 30, 2020 (Dollars in thousands) Total Performing 30-89 Days Past Due Non-Accrual and 90 Days or More Past Due Residential real estate loans Term loans by origination year 2020 (year-to-date) $ 141,655 141,655 — — 2019 228,558 228,558 — — 2018 129,077 128,043 791 243 2017 92,899 92,899 — — 2016 65,216 64,382 — 834 Prior 202,810 198,787 1,395 2,628 Revolving loans 2,399 2,399 — — Total $ 862,614 856,723 2,186 3,705 Home equity loans Term loans by origination year 2020 (year-to-date) $ 75 75 — — 2019 1,028 992 — 36 2018 1,862 1,861 — 1 2017 1,745 1,745 — — 2016 1,047 1,047 — — Prior 17,337 15,599 1,059 679 Revolving loans 623,756 619,423 2,078 2,255 Total $ 646,850 640,742 3,137 2,971 Other consumer loans Term loans by origination year 2020 (year-to-date) $ 106,569 106,501 56 12 2019 75,743 75,340 354 49 2018 49,929 49,737 144 48 2017 21,930 21,829 62 39 2016 12,424 12,278 80 66 Prior 22,250 21,106 932 212 Revolving loans 25,283 25,261 19 3 Total $ 314,128 312,052 1,647 429 Additional Disclosures The implementation of FASB ASU 2016-13, Financial Instruments - Credit Losses significantly changed disclosures related to loans and, as a result, certain disclosures are no longer required. The following tables represent disclosures for the prior period that are no longer required as of January 1, 2020, but are included in this Form 10-Q since the Company is required to disclose comparative information. The following table disclosed the recorded investment in loans and the balance in the allowance separated by loans individually evaluated and collectively evaluated for impairment: December 31, 2019 (Dollars in thousands) Total Residential Commercial Other Home Other Loans receivable Individually evaluated for impairment $ 94,504 7,804 58,609 21,475 3,745 2,871 Collectively evaluated for impairment 9,418,306 918,584 5,520,698 2,072,779 613,456 292,789 Total loans receivable $ 9,512,810 926,388 5,579,307 2,094,254 617,201 295,660 Allowance for loan and lease losses Individually evaluated for impairment $ 95 — 73 10 — 12 Collectively evaluated for impairment 124,395 10,111 69,423 36,119 4,937 3,805 Total allowance for loan and lease losses $ 124,490 10,111 69,496 36,129 4,937 3,817 The following table disclosed information related to impaired loans: At or for the Year ended December 31, 2019 (Dollars in thousands) Total Residential Commercial Other Home Other Loans with a specific valuation allowance Recorded balance $ 5,388 — 5,343 10 — 35 Unpaid principal balance 5,388 — 5,343 10 — 35 Specific valuation allowance 95 — 73 10 — 12 Average balance 10,378 409 6,341 3,490 24 114 Loans without a specific valuation allowance Recorded balance 89,116 7,804 53,266 21,465 3,745 2,836 Unpaid principal balance 99,355 9,220 57,735 24,758 4,494 3,148 Average balance 93,338 9,879 59,107 18,079 3,486 2,787 Total Recorded balance $ 94,504 7,804 58,609 21,475 3,745 2,871 Unpaid principal balance 104,743 9,220 63,078 24,768 4,494 3,183 Specific valuation allowance 95 — 73 10 — 12 Average balance 103,716 10,288 65,448 21,569 3,510 2,901 Interest income recognized on impaired loans for the year ended December 31, 2019 was not significant.

Leases

Leases	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Leases	Leases The Company leases certain land, premises and equipment from third parties. Effective January 1, 2019, ROU assets for operating and finance leases are included in net premises and equipment and lease liabilities are included in other liabilities and other borrowed funds, respectively, on the Company’s statements of financial condition. The following table summarizes the Company’s leases: September 30, 2020 December 31, 2019 (Dollars in thousands) Finance Operating Finance Operating ROU assets $ 5,999 6,537 Accumulated depreciation (212) (917) Net ROU assets $ 5,787 47,329 5,620 41,453 Lease liabilities $ 5,917 50,089 5,671 43,904 Weighted-average remaining lease term 24 years 17 years 24 years 19 years Weighted-average discount rate 2.6 % 3.5 % 3.0 % 3.7 % Maturities of lease liabilities consist of the following: September 30, 2020 (Dollars in thousands) Finance Operating Maturing within one year $ 259 4,608 Maturing one year through two years 265 4,431 Maturing two years through three years 270 3,961 Maturing three years through four years 277 3,914 Maturing four years through five years 285 3,869 Thereafter 6,808 48,432 Total lease payments 8,164 69,215 Present value of lease payments Short-term 214 2,973 Long-term 5,703 47,116 Total present value of lease payments 5,917 50,089 Difference between lease payments and present value of lease payments $ 2,247 19,126 The components of lease expense consist of the following: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Finance lease cost Amortization of ROU assets $ 59 16 174 48 Interest on lease liabilities 40 2 121 6 Operating lease cost 1,254 1,057 3,553 2,967 Short-term lease cost 88 102 266 330 Variable lease cost 264 236 977 657 Sublease income (2) (2) (5) (5) Total lease expense $ 1,703 1,411 5,086 4,003 Supplemental cash flow information related to leases is as follows: Three Months ended September 30, 2020 September 30, 2019 (Dollars in thousands) Finance Operating Finance Operating Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 40 706 2 565 Financing cash flows 23 N/A 21 N/A Nine Months ended September 30, 2020 September 30, 2019 (Dollars in thousands) Finance Operating Finance Operating Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 121 1,994 6 1,541 Financing cash flows 67 N/A 63 N/A
Leases	Leases The Company leases certain land, premises and equipment from third parties. Effective January 1, 2019, ROU assets for operating and finance leases are included in net premises and equipment and lease liabilities are included in other liabilities and other borrowed funds, respectively, on the Company’s statements of financial condition. The following table summarizes the Company’s leases: September 30, 2020 December 31, 2019 (Dollars in thousands) Finance Operating Finance Operating ROU assets $ 5,999 6,537 Accumulated depreciation (212) (917) Net ROU assets $ 5,787 47,329 5,620 41,453 Lease liabilities $ 5,917 50,089 5,671 43,904 Weighted-average remaining lease term 24 years 17 years 24 years 19 years Weighted-average discount rate 2.6 % 3.5 % 3.0 % 3.7 % Maturities of lease liabilities consist of the following: September 30, 2020 (Dollars in thousands) Finance Operating Maturing within one year $ 259 4,608 Maturing one year through two years 265 4,431 Maturing two years through three years 270 3,961 Maturing three years through four years 277 3,914 Maturing four years through five years 285 3,869 Thereafter 6,808 48,432 Total lease payments 8,164 69,215 Present value of lease payments Short-term 214 2,973 Long-term 5,703 47,116 Total present value of lease payments 5,917 50,089 Difference between lease payments and present value of lease payments $ 2,247 19,126 The components of lease expense consist of the following: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Finance lease cost Amortization of ROU assets $ 59 16 174 48 Interest on lease liabilities 40 2 121 6 Operating lease cost 1,254 1,057 3,553 2,967 Short-term lease cost 88 102 266 330 Variable lease cost 264 236 977 657 Sublease income (2) (2) (5) (5) Total lease expense $ 1,703 1,411 5,086 4,003 Supplemental cash flow information related to leases is as follows: Three Months ended September 30, 2020 September 30, 2019 (Dollars in thousands) Finance Operating Finance Operating Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 40 706 2 565 Financing cash flows 23 N/A 21 N/A Nine Months ended September 30, 2020 September 30, 2019 (Dollars in thousands) Finance Operating Finance Operating Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 121 1,994 6 1,541 Financing cash flows 67 N/A 63 N/A
Leases	Leases The Company leases certain land, premises and equipment from third parties. Effective January 1, 2019, ROU assets for operating and finance leases are included in net premises and equipment and lease liabilities are included in other liabilities and other borrowed funds, respectively, on the Company’s statements of financial condition. The following table summarizes the Company’s leases: September 30, 2020 December 31, 2019 (Dollars in thousands) Finance Operating Finance Operating ROU assets $ 5,999 6,537 Accumulated depreciation (212) (917) Net ROU assets $ 5,787 47,329 5,620 41,453 Lease liabilities $ 5,917 50,089 5,671 43,904 Weighted-average remaining lease term 24 years 17 years 24 years 19 years Weighted-average discount rate 2.6 % 3.5 % 3.0 % 3.7 % Maturities of lease liabilities consist of the following: September 30, 2020 (Dollars in thousands) Finance Operating Maturing within one year $ 259 4,608 Maturing one year through two years 265 4,431 Maturing two years through three years 270 3,961 Maturing three years through four years 277 3,914 Maturing four years through five years 285 3,869 Thereafter 6,808 48,432 Total lease payments 8,164 69,215 Present value of lease payments Short-term 214 2,973 Long-term 5,703 47,116 Total present value of lease payments 5,917 50,089 Difference between lease payments and present value of lease payments $ 2,247 19,126 The components of lease expense consist of the following: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Finance lease cost Amortization of ROU assets $ 59 16 174 48 Interest on lease liabilities 40 2 121 6 Operating lease cost 1,254 1,057 3,553 2,967 Short-term lease cost 88 102 266 330 Variable lease cost 264 236 977 657 Sublease income (2) (2) (5) (5) Total lease expense $ 1,703 1,411 5,086 4,003 Supplemental cash flow information related to leases is as follows: Three Months ended September 30, 2020 September 30, 2019 (Dollars in thousands) Finance Operating Finance Operating Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 40 706 2 565 Financing cash flows 23 N/A 21 N/A Nine Months ended September 30, 2020 September 30, 2019 (Dollars in thousands) Finance Operating Finance Operating Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 121 1,994 6 1,541 Financing cash flows 67 N/A 63 N/A

Goodwill

Goodwill	9 Months Ended
	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill The following schedule discloses the changes in the carrying value of goodwill: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Net carrying value at beginning of period $ 513,355 330,887 456,418 289,586 Acquisitions and adjustments 658 125,535 57,595 166,836 Net carrying value at end of period $ 514,013 456,422 514,013 456,422 The Company performed its annual goodwill impairment test during the third quarter of 2020 and determined the fair value of the aggregated reporting units exceeded the carrying value, such that the Company’s goodwill was not considered impaired. Changes in the economic environment, operations of the aggregated reporting units, or other factors could result in the decline in the fair value of the aggregated reporting units which could result in a goodwill impairment in the future. Accumulated impairment charges were $40,159,000 as of September 30, 2020 and December 31, 2019. For additional information on goodwill related to acquisitions, see Note 13.

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2020
Equity Method Investments and Joint Ventures [Abstract]
Variable Interest Entities	Variable Interest Entities A VIE is a partnership, limited liability company, trust or other legal entity that meets one of the following criteria: 1) the entity’s equity investment at risk is not sufficient to permit the entity to finance its activities without additional subordinated financial support from other parties; 2) the holders of the equity investment at risk, as a group, lack the characteristics of a controlling financial interest; and 3) the voting rights of some holders of the equity investment at risk are disproportionate to their obligation to absorb losses or receive returns, and substantially all of the activities are conducted on behalf of the holder of equity investment at risk with disproportionately few voting rights. A VIE must be consolidated by the Company if it is deemed to be the primary beneficiary, which is the party involved with the VIE that has both: 1) the power to direct the activities of the VIE that most significantly affect the VIE’s economic performance; and 2) the obligation to absorb the losses of the VIE that could potentially be significant to the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. The Company’s VIEs are regularly monitored to determine if any reconsideration events have occurred that could cause the primary beneficiary status to change. A previously unconsolidated VIE is consolidated when the Company becomes the primary beneficiary. A previously consolidated VIE is deconsolidated when the Company ceases to be the primary beneficiary or the entity is no longer a VIE. Consolidated Variable Interest Entities The Company has equity investments in Certified Development Entities (“CDE”) which have received allocations of New Markets Tax Credits (“NMTC”). The NMTC program provides federal tax incentives to investors to make investments in distressed communities and promotes economic improvements through the development of successful businesses in these communities. The NMTC is available to investors over seven years and is subject to recapture if certain events occur during such period. The maximum exposure to loss in the CDEs is the amount of equity invested and credit extended by the Company. However, the Company has credit protection in the form of indemnification agreements, guarantees, and collateral arrangements. The Company has evaluated the variable interests held by the Company in each CDE (NMTC) investment and determined the Company does not individually meet the characteristics of a primary beneficiary; however, the related-party group does meet the criteria as a group and substantially all of the activities of the CDEs either involve or are conducted on behalf of the Company. As a result, the Company is the primary beneficiary of the CDEs and their assets, liabilities, and results of operations are included in the Company’s consolidated financial statements. The primary activities of the CDEs are recognized in commercial loans interest income and other borrowed funds interest expense on the Company’s statements of operations and the federal income tax credit allocations from the investments are recognized in the Company’s statements of operations as a component of income tax expense. Such related cash flows are recognized in loans originated, principal collected on loans and change in other borrowed funds. The Bank is also the sole member of certain tax credit funds that make direct investments in qualified affordable housing projects (e.g., Low-Income Housing Tax Credit [“LIHTC”] partnerships). As such, the Company is the primary beneficiary of these tax credit funds and their assets, liabilities, and results of operations are included in the Company’s consolidated financial statements. The following table summarizes the carrying amounts of the consolidated VIEs’ assets and liabilities included in the Company’s statements of financial condition and are adjusted for intercompany eliminations. All assets presented can be used only to settle obligations of the consolidated VIEs and all liabilities presented consist of liabilities for which creditors and other beneficial interest holders therein have no recourse to the general credit of the Company. (Dollars in thousands) September 30, December 31, Assets Loans receivable $ 90,183 84,390 Accrued interest receivable 457 63 Other assets 55,863 54,692 Total assets $ 146,503 139,145 Liabilities Other borrowed funds $ 27,050 23,149 Accrued interest payable 167 36 Other liabilities 47 123 Total liabilities $ 27,264 23,308 Unconsolidated Variable Interest Entities The Company has equity investments in LIHTC partnerships, both directly and through tax credit funds, with carrying values of $43,730,000 and $41,521,000 as of September 30, 2020 and December 31, 2019, respectively. The LIHTCs are indirect federal subsidies to finance low-income housing and are used in connection with both newly constructed and renovated residential rental buildings. Once a project is placed in service, it is generally eligible for the tax credit for ten years. To continue generating the tax credit and to avoid tax credit recapture, a LIHTC building must satisfy specific low-income housing compliance rules for a full fifteen years. The maximum exposure to loss in the VIEs is the amount of equity invested and credit extended by the Company. However, the Company has credit protection in the form of indemnification agreements, guarantees, and collateral arrangements. The Company has evaluated the variable interests held by the Company in each LIHTC investment and determined that the Company does not have controlling financial interests in such investments, and is not the primary beneficiary. The Company reports the investments in the unconsolidated LIHTCs as other assets on the Company’s statements of financial condition. There were no impairment losses on the Company’s LIHTC investments during the nine months ended September 30, 2020 and 2019. Future unfunded contingent commitments related to the Company’s LIHTC investments at September 30, 2020 are as follows: (Dollars in thousands) Amount Years ending December 31, 2020 $ 7,608 2021 14,883 2022 14,165 2023 5,277 2024 427 Thereafter 812 Total $ 43,172 The Company has elected to use the proportional amortization method, and more specifically the practical expedient method, for the amortization of all eligible LIHTC investments and amortization expense is recognized as a component of income tax expense. The following table summarizes the amortization expense and the amount of tax credits and other tax benefits recognized for qualified affordable housing project investments during the periods presented. Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Amortization expense $ 1,936 1,609 5,766 4,504 Tax credits and other tax benefits recognized 2,608 2,202 7,771 6,169 The Company also owns the following trust subsidiaries, each of which issued trust preferred securities: Glacier Capital Trust II, Glacier Capital Trust III, Glacier Capital Trust IV, Citizens (ID) Statutory Trust I, Bank of the San Juans Bancorporation Trust I, First Company Statutory Trust 2001, First Company Statutory Trust 2003, FNB (UT) Statutory Trust I and FNB (UT) Statutory Trust II. The trust subsidiaries have no assets, operations, revenues or cash flows other than those related to the issuance, administration and repayment of the securities held by third parties. The trust subsidiaries are not included in the Company’s consolidated financial statements because the sole asset of each trust subsidiary is a receivable from the Company, even though the Company owns all of the voting equity shares of the trust subsidiaries, has fully guaranteed the obligations of the trust subsidiaries and may have the right to redeem the third party securities under certain circumstances. The Company reports the trust preferred securities issued to the trust subsidiaries as subordinated debentures on the Company’s statements of financial condition.

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase	9 Months Ended
	Sep. 30, 2020
Transfers and Servicing [Abstract]
Securities Sold Under Agreements to Repurchase	Securities Sold Under Agreements to Repurchase The following table summarizes the carrying value of the Company’s securities sold under agreements to repurchase (“repurchase agreements”) by remaining contractual maturity of the agreements and category of collateral: Overnight and Continuous (Dollars in thousands) September 30, December 31, State and local governments $ 742,753 — Corporate bonds 222,915 — Residential mortgage-backed securities — 312,015 Commercial mortgage-backed securities — 257,809 Total $ 965,668 569,824

Derivatives and Hedging Activit

Derivatives and Hedging Activities	9 Months Ended
	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivatives and Hedging Activities Cash Flow Hedges The Company is exposed to certain risks relating to its ongoing operations. The primary risk managed by using derivative instruments is interest ra te risk. Interest rate caps and interest rate swaps have been entered into to manage interest rate risk associated with variable rate borrowings. Interest Rate Cap Deriv atives. In March 2020, the Company purchased interest rate caps designated as cash flow hedges with notional amounts totaling $130,500,000 on its variable rate subordinated debentures and were determined to be fully effective during the nine months ended September 30, 2020. The interest rate caps require receipt of variable amounts from the counterparty when interest rates rise above the strike price in the contracts. The strike prices in the five Interest Rate Swap Derivatives. In September 2019, the Company implemented a balance sheet strategy to increase its net interest income and net interest margin. The strategy included early termination of the Company’s pay-fixed interest rate swaps with notional amounts totaling $260,000,000. A $9,997,000 loss was recognized on the early termination of the pay-fixed interest rate swaps and was reported in loss on termination of hedging activities on the Company’s statements of operations. The Company recognized interest rate swaps as other assets or liabilities at fair value in the statements of financial condition, after taking into account the effects of bilateral collateral and master netting agreements. These agreements allowed the Company to settle all interest rate swap agreements held with a single counterparty on a net basis, and to offset net interest rate swap derivative positions with related collateral, where applicable. Changes in fair value were recorded in OCI. The Company designated wholesale deposits and Federal Home Loan Bank (“FHLB”) advances for the cash flow hedge and these hedged items were determined to be fully effective during all periods. Interest expense recorded on the interest rate swaps totaled $0 and $5,532,000 for the nine months ended September 30, 2020 and 2019, respectively, and was reported as a component of interest expense on deposits and FHLB advances. The effect of cash flow hedge accounting on OCI for the periods ending September 30, 2020 and 2019 was as follows: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Amount of loss recognized in OCI $ (76) (1,393) (532) (7,047) Amount of loss reclassified from OCI to net income — (10,315) — (10,816) Residential Real Estate Derivatives

Other Expenses

Other Expenses	9 Months Ended
	Sep. 30, 2020
Other Expenses [Abstract]
Other Expenses	Other Expenses Other expenses consists of the following: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Consulting and outside services 4,050 1,938 8,604 5,715 Mergers and acquisition expenses $ 792 2,058 7,311 4,103 Loan expenses 1 4,060 924 5,867 2,726 Telephone 1,314 1,216 3,865 3,601 Debit card expenses 1,414 1,699 3,704 5,003 VIE amortization and other expenses 1,510 1,427 3,396 2,878 Business development 1,139 1,176 3,110 3,189 Printing and supplies 877 735 2,704 2,246 Postage 851 831 2,479 2,487 Employee expenses 560 1,245 2,247 3,646 Accounting and audit fees 455 365 1,453 1,290 Checking and operating expenses 355 361 1,263 1,353 Legal fees 206 338 1,025 926 ATM expenses 245 299 373 1,312 Other 958 991 2,828 2,679 Total other expenses $ 18,786 15,603 50,229 43,154 ______________________________ 1 Loan expenses include credit loss expense for off-balance sheet credit exposures.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income The following table illustrates the activity within accumulated other comprehensive income by component, net of tax: (Dollars in thousands) (Losses) Gains on Available-For-Sale Debt Securities Losses on Derivatives Used for Cash Flow Hedges Total Balance at January 1, 2019 $ (6,613) (2,814) (9,427) Other comprehensive income (loss) before reclassifications 65,284 (5,261) 60,023 Reclassification adjustments for (gains) losses included in net income (10,576) 8,075 (2,501) Net current period other comprehensive income 54,708 2,814 57,522 Balance at September 30, 2019 $ 48,095 — 48,095 Balance at January 1, 2020 $ 40,226 — 40,226 Other comprehensive income (loss) before reclassifications 92,027 (397) 91,630 Reclassification adjustments for gains included in net income (loss) (758) — (758) Net current period other comprehensive income (loss) 91,269 (397) 90,872 Balance at September 30, 2020 $ 131,495 (397) 131,098

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding during the period presented. Diluted earnings per share is computed by including the net increase in shares as if dilutive outstanding restricted stock units were vested and stock options were exercised, using the treasury stock method. Basic and diluted earnings per share has been computed based on the following: Three Months ended Nine Months ended (Dollars in thousands, except per share data) September 30, September 30, September 30, September 30, Net income available to common stockholders, basic and diluted $ 77,757 51,610 184,540 153,134 Average outstanding shares - basic 95,411,656 90,294,811 94,704,198 86,911,402 Add: dilutive restricted stock units and stock options 30,920 154,384 43,696 170,776 Average outstanding shares - diluted 95,442,576 90,449,195 94,747,894 87,082,178 Basic earnings per share $ 0.81 0.57 1.95 1.76 Diluted earnings per share $ 0.81 0.57 1.95 1.76 Restricted stock units and stock options excluded from the diluted average outstanding share calculation 1 93,253 4,037 78,605 1,360 ______________________________ 1 Anti-dilution occurs when the unrecognized compensation cost per share of a restricted stock unit or the exercise price of a stock option exceeds the market price of the Company’s stock.

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities	Fair Value of Assets and Liabilities Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. There is a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three levels of inputs that may be used to measure fair value are as follows: Level 1 Quoted prices in active markets for identical assets or liabilities Level 2 Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities Transfers in and out of Level 1 (quoted prices in active markets), Level 2 (significant other observable inputs) and Level 3 (significant unobservable inputs) are recognized on the actual transfer date. There were no transfers between fair value hierarchy levels during the nine month periods ended September 30, 2020 and 2019. Recurring Measurements The following is a description of the inputs and valuation methodologies used for assets and liabilities measured at fair value on a recurring basis, as well as the general classification of such assets and liabilities pursuant to the valuation hierarchy. There have been no significant changes in the valuation techniques during the period ended September 30, 2020. Debt securities, available-for-sal e. The fair value for available-for-sale debt securities is estimated by obtaining quoted market prices for identical assets, where available. If such prices are not available, fair value is based on independent asset pricing services and models, the inputs of which are market-based or independently sourced market parameters, including but not limited to, yield curves, interest rates, volatilities, market spreads, prepayments, defaults, recoveries, cumulative loss projections, and cash flows. Such securities are classified in Level 2 of the valuation hierarchy. Where Level 1 or Level 2 inputs are not available, such securities are classified as Level 3 within the hierarchy. Fair value determinations of available-for-sale debt securities are the responsibility of the Company’s corporate accounting and treasury departments. The Company obtains fair value estimates from independent third party vendors on a monthly basis. The vendors’ pricing system methodologies, procedures and system controls are reviewed to ensure they are appropriately designed and operating effectively. The Company reviews the vendors’ inputs for fair value estimates and the recommended assignments of levels within the fair value hierarchy. The review includes the extent to which markets for debt securities are determined to have limited or no activity, or are judged to be active markets. The Company reviews the extent to which observable and unobservable inputs are used as well as the appropriateness of the underlying assumptions about risk that a market participant would use in active markets, with adjustments for limited or inactive markets. In considering the inputs to the fair value estimates, the Company places less reliance on quotes that are judged to not reflect orderly transactions, or are non-binding indications. In assessing credit risk, the Company reviews payment performance, collateral adequacy, third party research and analyses, credit rating histories and issuers’ financial statements. For those markets determined to be inactive or limited, the valuation techniques used are models for which management has verified that discount rates are appropriately adjusted to reflect illiquidity and credit risk. Loans held for sale, at fair value. Loans held for sale measured at fair value, for which an active secondary market and readily available market prices exist, are initially valued at the transaction price and are subsequently valued by using quoted prices for similar assets, adjusted for specific attributes of that loan or other observable market data, such as outstanding commitments from third party investors. Loans held for sale measured at fair value are classified within Level 2. Included in gain on sale of loans were net gains of $3,435,000 and net gains of $993,000 for the nine month periods ended September 30, 2020 and 2019, respectively, from the changes in fair value of loans held for sale measured at fair value. Electing to measure loans held for sale at fair value reduces certain timing differences and better matches changes in fair value of these assets with changes in the value of the derivative instruments used to economically hedge them without the burden of complying with the requirements for hedge accounting. Loan interest rate lock commitments. F air value estimates for loan interest rate lock commitments were based upon the estimated sales price, origination fees, direct costs, interest rate changes, etc. and were obtained from an independent third party. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy. Forward commitments to sell TBA securities. Fo rward commitments to sell TBA securities are used to economically hedge the interest rate risk associated with certain loan commitments. The fair value estimates for the TBA commitments were based upon the estimated sale of the TBA hedge obtained from an independent third party. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy. Interest rate cap derivative financial instrum ents. F air value estimates for interest rate cap derivative financial instruments were based upon the discounted cash flows of known payments plus the option value of each caplet which incorporates market rate forecasts and implied market volatilities. The components of the valuation were observable or could be corroborated by observable market data and, therefore, were classified within Level 2 of the valuation hierarchy. The Company also obtained and compared the reasonableness of the pricing from independent third party valuations. The following tables disclose the fair value measurement of assets measured at fair value on a recurring basis: Fair Value Measurements (Dollars in thousands) Fair Value Quoted Prices Significant Significant Debt securities, available-for-sale U.S. government and federal agency $ 40,140 — 40,140 — U.S. government sponsored enterprises 9,825 — 9,825 — State and local governments 1,275,376 — 1,275,376 — Corporate bonds 361,024 — 361,024 — Residential mortgage-backed securities 1,275,858 — 1,275,858 — Commercial mortgage-backed securities 1,163,325 — 1,163,325 — Loans held for sale, at fair value 147,937 — 147,937 — Interest rate caps 182 — 182 — Interest rate lock commitment 14,967 — 14,967 — Total assets measured at fair value on a recurring basis $ 4,288,634 — 4,288,634 — TBA hedge $ 1,344 — 1,344 — Total liabilities measured at fair value on a recurring basis $ 1,344 — 1,344 — Fair Value Measurements (Dollars in thousands) Fair Value December 31, 2019 Quoted Prices Significant Significant Debt securities, available-for-sale U.S. government and federal agency $ 20,044 — 20,044 — U.S. government sponsored enterprises 43,677 — 43,677 — State and local governments 702,398 — 702,398 — Corporate bonds 157,602 — 157,602 — Residential mortgage-backed securities 738,724 — 738,724 — Commercial mortgage-backed securities 912,807 — 912,807 — Loans held for sale, at fair value 69,194 — 69,194 — Interest rate lock commitment 1,852 — 1,852 — Total assets measured at fair value on a recurring basis $ 2,646,298 — 2,646,298 — TBA hedge $ 236 — 236 — Total liabilities measured at fair value on a recurring basis $ 236 — 236 — Non-recurring Measurements The following is a description of the inputs and valuation methodologies used for assets recorded at fair value on a non-recurring basis, as well as the general classification of such assets pursuant to the valuation hierarchy. There have been no significant changes in the valuation techniques during the period ended September 30, 2020. Other real estate owned. OREO is initially recorded at fair value less estimated cost to sell, establishing a new cost basis. OREO is subsequently accounted for at lower of cost or fair value less estimated cost to sell. Estimated fair value of OREO is based on appraisals or evaluations (new or updated). OREO is classified within Level 3 of the fair value hierarchy. Collateral-dependent loans, net of ACL. Fair value estimates of collateral-dependent loans that are individually reviewed are based on the fair value of the collateral, less estimated cost to sell. Collateral-dependent individually reviewed loans are classified within Level 3 of the fair value hierarchy. The Company’s credit department reviews appraisals for OREO and collateral-dependent loans, giving consideration to the highest and best use of the collateral. The appraisal or evaluation (new or updated) is considered the starting point for determining fair value. The valuation techniques used in preparing appraisals or evaluations (new or updated) include the cost approach, income approach, sales comparison approach, or a combination of the preceding valuation techniques. The key inputs used to determine the fair value of the collateral-dependent loans and OREO include selling costs, discounted cash flow rate or capitalization rate, and adjustment to comparables. Valuations and significant inputs obtained by independent sources are reviewed by the Company for accuracy and reasonableness. The Company also considers other factors and events in the environment that may affect the fair value. The appraisals or evaluations (new or updated) are reviewed at least quarterly and more frequently based on current market conditions, including deterioration in a borrower’s financial condition and when property values may be subject to significant volatility. After review and acceptance of the collateral appraisal or evaluation (new or updated), adjustments to the impaired loan or OREO may occur. The Company generally obtains appraisals or evaluations (new or updated) annually. The following tables disclose the fair value measurement of assets with a recorded change during the period resulting from re-measuring the assets at fair value on a non-recurring basis: Fair Value Measurements (Dollars in thousands) Fair Value Quoted Prices Significant Significant Other real estate owned $ 297 — — 297 Collateral-dependent loans, net of ACL 2,284 — — 2,284 Total assets measured at fair value on a non-recurring basis $ 2,581 — — 2,581 Fair Value Measurements (Dollars in thousands) Fair Value December 31, 2019 Quoted Prices Significant Significant Other real estate owned $ 1,983 — — 1,983 Collateral-dependent loans, net of ACL 23 — — 23 Total assets measured at fair value on a non-recurring basis $ 2,006 — — 2,006 Non-recurring Measurements Using Significant Unobservable Inputs (Level 3) The following tables present additional quantitative information about assets measured at fair value on a non-recurring basis and for which the Company has utilized Level 3 inputs to determine fair value: Fair Value Quantitative Information about Level 3 Fair Value Measurements (Dollars in thousands) Valuation Technique Unobservable Input Range (Weighted-Average) 1 Other real estate owned $ 297 Sales comparison approach Selling costs 8.0% - 10.0% (9.0%) Collateral-dependent loans, net of ACL $ 943 Cost approach Selling costs 10.0% - 10.0% (10.0%) 45 Sales comparison approach Selling costs 10.0% - 10.0% (10.0%) 1,296 Combined approach Selling costs 10.0% - 10.0% (10.0%) $ 2,284 Fair Value December 31, 2019 Quantitative Information about Level 3 Fair Value Measurements (Dollars in thousands) Valuation Technique Unobservable Input Range (Weighted-Average) 1 Other real estate owned $ 1,983 Sales comparison approach Selling costs 6.0% - 10.0% (7.3%) Adjustment to comparables 0.0% - 11.1% (4.5%) Collateral-dependent loans, net of ACL $ 9 Cost approach Selling costs 10.0% - 10.0% (10.0%) 14 Sales comparison approach Adjustment to comparables 0.0% - 0.0% (0.0%) $ 23 ______________________________ 1 The range for selling cost inputs represents reductions to the fair value of the assets. Fair Value of Financial Instruments The following tables present the carrying amounts, estimated fair values and the level within the fair value hierarchy of the Company’s financial instruments not carried at fair value. Receivables and payables due in one year or less, equity securities without readily determinable fair values and deposits with no defined or contractual maturities are excluded. Fair Value Measurements (Dollars in thousands) Carrying Amount Quoted Prices Significant Significant Financial assets Cash and cash equivalents $ 769,879 769,879 — — Debt securities, held-to-maturity 193,509 — 206,577 — Loans receivable, net of ACL 11,454,179 — — 11,619,887 Total financial assets $ 12,417,567 769,879 206,577 11,619,887 Financial liabilities Term deposits $ 1,098,988 — 1,104,273 — FHLB advances 7,318 — 7,537 — Repurchase agreements and other borrowed funds 998,635 — 998,635 — Subordinated debentures 139,918 — 119,318 — Total financial liabilities $ 2,244,859 — 2,229,763 — Fair Value Measurements (Dollars in thousands) Carrying Amount December 31, 2019 Quoted Prices Significant Significant Financial assets Cash and cash equivalents $ 330,961 330,961 — — Debt securities, held-to-maturity 224,611 — 234,396 — Loans receivable, net of ACL 9,388,320 — — 9,438,121 Total financial assets $ 9,943,892 330,961 234,396 9,438,121 Financial liabilities Term deposits $ 1,011,798 — 1,017,505 — FHLB advances 38,611 — 38,787 — Repurchase agreements and other borrowed funds 598,644 — 598,644 — Subordinated debentures 139,914 — 124,094 — Total financial liabilities $ 1,788,967 — 1,779,030 —

Mergers and Acquisitions

Mergers and Acquisitions	9 Months Ended
	Sep. 30, 2020
Business Combinations [Abstract]
Mergers and Acquisitions	Mergers and Acquisitions On February 29, 2020, the Company acquired 100 percent of the outstanding common stock of State Bank Corp. and its wholly-owned subsidiary, State Bank of Arizona, a community bank based in Lake Havasu City, Arizona. SBAZ has been merged into The Foothills Bank division of Glacier Bank. SBAZ provides banking services to individuals and businesses in Arizona with locations in Bullhead City, Cottonwood, Kingman, Lake Havasu City, Phoenix, Prescott Valley and Prescott. The preliminary value of the SBAZ acquisition was $125,854,000 and resulted in the Company issuing 3,007,044 shares of its common stock and paying $13,721,000 in cash in exchange for all of SBAZ’s outstanding common stock shares. The fair value of the Company shares issued was determined on the basis of the closing market price of the Company’s common stock on the February 29, 2020 acquisition date. The excess of the preliminary fair value of consideration transferred over total identifiable net assets was recorded as goodwill. The goodwill arising from the acquisition consists largely of the synergies and economies of scale expected from combining the operations of the Company and SBAZ. None of the goodwill is deductible for income tax purposes as the acquisition was accounted for as a tax-free exchange. The assets and liabilities of SBAZ were recorded on the Company’s consolidated statements of financial condition at their preliminary estimated fair values as of the acquisition date and the results of operations have been included in the Company’s consolidated statements of operations since that date. The following table discloses the preliminary fair value estimates of the consideration transferred, the total identifiable net assets acquired and the resulting goodwill arising from the SBAZ acquisition. The Company is continuing to obtain information to determine the fair values of assets acquired and liabilities assumed. (Dollars in thousands) SBAZ Fair value of consideration transferred Fair value of Company shares issued $ 112,133 Cash consideration 13,721 Total fair value of consideration transferred 125,854 Recognized amounts of identifiable assets acquired and liabilities assumed Identifiable assets acquired Cash and cash equivalents 57,434 Debt securities 142,174 Loans receivable, net of ACL 451,653 Core deposit intangible 1 2,593 Accrued income and other assets 33,971 Total identifiable assets acquired 687,825 Liabilities assumed Deposits 603,289 Borrowings 10,904 Accrued expenses and other liabilities 5,373 Total liabilities assumed 619,566 Total identifiable net assets 68,259 Goodwill recognized $ 57,595 ______________________________ 1 The core deposit intangible for the acquisition was determined to have an estimated life of 10 years . The preliminary fair values of the SBAZ assets acquired include loans with preliminary fair values of $451,702,000. The gross principal and contractual interest due under the SBAZ contracts was $452,510,000. The Company evaluated the loans at the acquisition date and determined there were PCD loans of $3,401,000 with an ACL of $49,000. The Company incurred $4,167,000 of expenses in connection with the SBAZ acquisition during the nine months ended September 30, 2020. Mergers and acquisition expenses are included in other expense in the Company's consolidated statements of operations and consist of third-party costs and employee severance expenses. Total income consisting of net interest income and non-interest income of the acquired operations of SBAZ was approximately $21,144,000 and net income was approximately $3,921,000 from February 29, 2020 to September 30, 2020. The following unaudited pro forma summary presents consolidated information of the Company as if the SBAZ acquisition had occurred on January 1, 2019: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Net interest income and non-interest income $ 205,070 182,185 567,406 491,830 Net income 77,757 54,000 183,429 159,601

Nature of Operations and Summ_2

Nature of Operations and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General Glacier Bancorp, Inc. (“Company”) is a Montana corporation headquartered in Kalispell, Montana. The Company provides a full range of banking services to individuals and businesses in Montana, Idaho, Utah, Washington, Wyoming, Colorado, Arizona and Nevada through its wholly-owned bank subsidiary, Glacier Bank (“Bank”). The Company offers a wide range of banking products and services, including: 1) retail banking; 2) business banking; 3) real estate, commercial, agriculture and consumer loans; and 4) mortgage origination services. The Company serves individuals, small to medium-sized businesses, community organizations and public entities. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments necessary for a fair presentation of the results for the interim periods. All such adjustments are of a normal recurring nature. These interim financial statements do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements and they should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. Operating results for the nine months ended September 30, 2020 are not necessarily indicative of the results anticipated for the year ending December 31, 2020. The condensed consolidated statement of financial condition of the Company as of December 31, 2019 has been derived from the audited consolidated statements of the Company as of that date. The Company is a defendant in legal proceedings arising in the normal course of business. In the opinion of management, the disposition of pending litigation will not have a material affect on the Company’s consolidated financial position, results of operations or liquidity.
Principles of Consolidation	Principles of Consolidation The consolidated financial statements of the Company include the parent holding company and the Bank, which consists of sixteen bank divisions and a corporate division. The corporate division includes the Bank’s investment portfolio, wholesale borrowings and other centralized functions. The Bank divisions operate under separate names, management teams and advisory directors. The Company considers the Bank to be its sole operating segment as the Bank 1) engages in similar bank business activity from which it earns revenues and incurs expenses; 2) the operating results of the Bank are regularly reviewed by the Chief Executive Officer (“CEO”) (i.e., the chief operating decision maker) who makes decisions about resources to be allocated to the Bank; and 3) financial information is available for the Bank. All significant inter-company transactions have been eliminated in consolidation. The Bank has subsidiary interests in variable interest entities (“VIE”) for which the Bank has both the power to direct the VIE’s significant activities and the obligation to absorb losses or right to receive benefits of the VIE that could potentially be significant to the VIE. These subsidiary interests are included in the Company’s consolidated financial statements. The Bank also has subsidiary interests in VIEs for which the Bank does not have a controlling financial interest and is not the primary beneficiary. These subsidiary interests are not included in the Company’s consolidated financial statements. The parent holding company owns non-bank subsidiaries that have issued trust preferred securities. The trust subsidiaries are not included in the Company’s consolidated financial statements. The Company's investments in the trust subsidiaries are included in other assets on the Company's statements of financial condition. On February 29, 2020, the Company completed the acquisition of State Bank Corp. , the bank holding company for State Bank of Arizona, a community bank based in Lake Havasu City, Arizona (collectively, “SBAZ” ) . The business combination was accounted for using the acquisition method, with the results of operations included in the Company’s consolidated financial statements as of the acquisition date. For additional information relating to mergers and acquisitions, see Note 13.
Debt Securities	De bt Securities On January 1, 2020, the Company adopted Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2016-13, Financial Instruments - Credit Losses , which significantly changed the allowance for credit loss accounting policies for debt securities. The following debt securities and allowance for credit loss accounting policies are presented under Accounting Standards Codification™ (“ASC”) Topic 326, whereas prior periods are presented as described in the Company’s 2019 Annual Report on Form 10-K. Debt securities for which the Company has the positive intent and ability to hold to maturity are classified as held-to-maturity and are carried at amortized cost. Debt securities held primarily for the purpose of selling in the near term are classified as trading securities and are reported at fair value, with unrealized gains and losses included in income. Debt securities not classified as held-to-maturity or trading are classified as available-for-sale and are reported at fair value with unrealized gains and losses, net of income taxes, as a separate component of other comprehensive income (“OCI”). Premiums and discounts on debt securities are amortized or accreted into income using a method that approximates the interest method. The objective of the interest method is to calculate periodic interest income at a constant effective yield. The Company does not have any debt securities classified as trading securities. When the Company acquires another entity, it designates all debt securities as available-for-sale at acquisition date and records the debt securities at fair value. The Company reviews and analyzes the various risks that may be present within the investment portfolio on an ongoing basis, including market risk, credit risk and liquidity risk. Market risk is the risk to an entity’s financial condition resulting from adverse changes in the value of its holdings arising from movements in interest rates, foreign exchange rates, equity prices or commodity prices. The Company assesses the market risk of individual debt securities as well as the investment portfolio as a whole. Credit risk, broadly defined, is the risk that an issuer or counterparty will fail to perform on an obligation. The credit rating of a security is considered the primary credit quality indicator for debt securities. Liquidity risk refers to the risk that a security will not have an active and efficient market in which the security can be sold. A debt security is investment grade if the issuer has adequate capacity to meet its commitment over the expected life of the investment, i.e., the risk of default is low and full and timely repayment of interest and principal is expected. To determine investment grade status for debt securities, the Company conducts due diligence of the creditworthiness of the issuer or counterparty prior to acquisition and ongoing thereafter consistent with the risk characteristics of the security and the overall risk of the investment portfolio. Credit quality due diligence takes into account the extent to which a security is guaranteed by the U.S. government and other agencies of the U.S. government. The depth of the due diligence is based on the complexity of the structure, the size of the security, and takes into account material positions and specific groups of securities or stratifications for analysis and review of similar risk positions. The due diligence includes consideration of payment performance, collateral adequacy, internal analyses, third party research and analytics, external credit ratings and default statistics. The Company has acquired debt securities through acquisitions and if the securities have more than insignificant credit deterioration since origination, they are designated as purchased credit-deteriorated (“PCD”) securities. An ACL is determined using the same methodology as with other debt securities. The sum of a security’s purchase price and ACL becomes the initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the debt security is a noncredit discount or premium, which is amortized into interest income over the life of the security. Subsequent changes to the allowance are recorded through credit loss expense. For additional information relating to debt securities, see Note 2. Allowance for Credit Losses - Available-for-Sale Debt Securities For available-for-sale debt securities in an unrealized loss position, the Company first assesses whether it intends to sell, or it is more-likely-than-not that it will be required to sell the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security’s amortized cost basis is written down to fair value through other expense. For the available-for-sale securities that do not meet the aforementioned criteria, the Company evaluates whether the decline in fair value has resulted from cred it losses or other factors. In such assessment, the Company considers the extent to which fair value is less than amortized cost, if there are any changes to the investment grade of the security by a rating agency, and if there any adverse conditions that impact the security. If this assessment indicates a credit loss exists, the present value of the cash flows expected to be collected from the security is compared to the amortized cost basis of the s ecurity. If the present value of the cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an ACL is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost. Any estimated credit losses that have not been recorded through an ACL are recognized in OCI. The Company has elected to exclude accrued interest from the estimate of credit losses for available-for-sale debt securities. As part of its non-accrual policy, the Company charges-off uncollectable interest at the time it is determined to be uncollectable. Allowance for Credit Losses - Held-to-Maturity Debt Securities For estimating the allowance for held-to-maturity debt securities that share similar risk characteristics with other securities, such securities are pooled based on major security type. For pools of such securities with similar risk characteristics, the historical lifetime probability of default and severity of loss in the event of default is derived or obtained from external sources and adjusted for the expected effects of reasonable and supportable forecasts over the expected lives of the securities on those historical credit losses. Expected credit losses on securities in the held-to-maturity portfolio that do not share similar risk characteristics with any of the pools of debt securities are individually measured based on net realizable value, or the difference between the discounted value of the expected future cash flows, based on the original effective interest rate, and the recorded amortized cost basis of the securities.
Loans Receivable	Loans Receivable On January 1, 2020, the Company adopted FASB ASU 2016-13, Financial Instruments - Credit Losses , which significantly changed the loan and allowance for credit loss accounting policies. The following loan and allowance for credit loss accounting policies are presented under ASC Topic 326, whereas prior periods are presented in accordance with the incurred loss model as disclosed in the Company’s 2019 Annual Report on Form 10-K. The Company’s loan segments or classes are based on the purpose of the loan and consist of residential real estate, commercial real estate, other commercial, home equity, and other consumer loans. Loans that are intended to be held-to-maturity are reported at the unpaid principal balance less net c harge-offs and adjusted for deferred fees and costs on originated loans and unamortized premiums or discounts on acquired loans. Fees and costs on originated loans and premiums or discounts on acquired loans are deferred and subsequently amortized or accreted as a yield adjustment over the expected life of the loan utilizing the interest or straight-line methods. The interest method is utilized for loans with scheduled payment terms and the objective is to calculate periodic interest income at a constant effective yield. The straight-line method is utilized for revolving lines of credit or loans with no scheduled payment terms. When a loan is paid off prior to maturity, the remaining fees and costs on originated loans and premiums or discounts on acquired loans are immediately recognized into interest income. Loans that are thirty days or more past due based on payments received and applied to the loan are considered delinquent. Loans are designated non-accrual and the accrual of interest is discontinued when the collection of the contractual principal or interest is unlikely. A loan is typically placed on non-accrual when principal or interest is due and has remained unpaid for ninety days or more. When a loan is placed on non-accrual status, interest previously accrued but not collected is reversed against current period interest income. Subsequent payments on non-accrual loans are applied to the outstanding principal balance if doubt remains as to the ultimate collectability of the loan. Interest accruals are not resumed on partially charged-off loans. For other loans on non-accrual, interest accruals are resumed on such loans only when the loan is brought fully current with respect to interest and principal and when, in the judgment of management, the loans are estimated to be fully collectible as to both principal and interest. The Company has acquired loans through acquisitions, some of which have experienced more than insignificant credit deterioration since origination. The Company considers all acquired non-accrual loans to be PCD loans. In addition, the Company considers loans accruing ninety days or more past due with estimated credit losses or substandard loans with estimated credit losses to be PCD loans. An ACL is determined using the same methodology as other loans held for investment. The ACL determined on a collective basis is allocated to individual loans. The sum of a loan’s purchase price and ACL becomes the initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. Subsequent changes to the ACL are recorded through credit loss expense. For additional information relating to loans, see Note 3. Allowance for Credit Losses - Loans Receivable The allowance for credit losses for loans receivable represents management’s estimate of credit losses over the expected contractual life of the loan portfolio. The estimate is determined based on the amortized cost of the loan portfolio including the loan balance adjusted for charge-offs, recoveries, deferred fees and costs, and loan discount and premiums. Recoveries are included only to the extent that such amounts were previously charged-off. The Company has elected to exclude accrued interest from the estimate of credit losses for loans. Determining the adequacy of the allowance is complex and requires a high degree of judgment by management about the effect of matters that are inherently uncertain. Subsequent evaluations of the then-existing loan portfolio, in light of the factors then prevailing, may result in significant changes in the allowance in those future periods. The allowance is increased for estimated credit losses which is recorded as expense. The portion of loans and overdraft balances determined by management to be uncollectible are charged-off as a reduction to the allowance and recoveries of amounts previously charged-off increase the allowance. The Company’s charge-off policy is consistent with bank regulatory standards. Consumer loans generally are charged-off when the loan becomes over 120 days delinquent. Real estate acquired as a result of foreclosure or by deed-in-lieu of foreclosure is classified as other real estate owned (“OREO”) until such time as it is sold. The expected credit loss estimate process involves procedures to consider the unique characteristics of each of its portfolio segments, which consist of residential real estate, commercial real estate, other commercial, home equity, and other consumer loans. When computing the allowance levels, credit loss assumptions are estimated using a model that categorizes loan pools based on loss history, credit and risk characteristics, including current conditions and reasonable and supportable forecasts about the future. The Company has determined a four consecutive quarter forecasting period is a reasonable and supportable period. Expected credit loss for periods beyond reasonable and supportable forecast periods are determined based on a reversion method which reverts back to historical loss estimate over a four consecutive quarter period on a straight-line basis. Credit quality is assessed and monitored by evaluating various attributes and the results of those evaluations are utilized in underwriting new loans and the process for estimating the expected credit losses. The following paragraphs describe the risk characteristics relevant to each portfolio segment. Residential Real Estate. Residential real estate loans are secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans is impacted by economic conditions within the Company’s market areas that affect the value of the property securing the loans and affect the borrowers' personal incomes. Mitigating risk factors for this loan segment include a large number of borrowers, geographic dispersion of market areas and the loans are originated for relatively smaller amounts. Commercial Real Estate . Commercial real estate loans typically involve larger principal amounts, and repayment of these loans is generally dependent on the successful operation of the property securing the loan and/or the business conducted on the property securing the loan. Credit risk in these loans is impacted by the creditworthiness of a borrower, valuation of the property securing the loan and conditions within the local economies in the Company’s diverse, geographic market areas. Commercial . Commercial loans consist of loans to commercial customers for use in financing working capital needs, equipment purchases and business expansions. The loans in this segment are repaid primarily from the cash flow of a borrower’s principal business operation. Credit risk in these loans is driven by creditworthiness of a borrower and the economic conditions that impact the cash flow stability from business operations across the Company’s diverse, geographic market areas. Home Equity . Home equity loans consist of junior lien mortgages and first and junior lien lines of credit (revolving open-end and amortizing closed-end) secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans is impacted by economic conditions within the Company’s market areas that affect the value of the residential property securing the loans and affect the borrowers' personal incomes. Mitigating risk factors for this loan segment are a large number of borrowers, geographic dispersion of market areas and the loans are originated for terms that range from 10 to 15 years. Other Consumer . The other consumer loan portfolio consists of various short-term loans such as automobile loans and loans for other personal purposes. Repayment of these loans is primarily dependent on the personal income of the borrowers. Credit risk is driven by consumer economic factors (such as unemployment and general economic conditions in the Company’s diverse, geographic market area) and the creditworthiness of a borrower. The allowance is impacted by loan volumes, delinquency status, credit ratings, historical loss experiences, prepayment speeds, weighted average lives and other conditions influencing loss expectations, such as reasonable and supportable forecasts of economic conditions. The methodology for estimating the amount of expected credit losses reported in the allowance has two basic components: 1) individual loans that do not share similar risk characteristics with other loans and the measurement of expected credit losses for such individual loans; and 2) the expected credit losses for pools of loans that share similar risk characteristics. Loans that do not Share Similar Risk Characteristics with Other Loans. For a loan that does not share similar risk characteristics with other loans, expected credit loss is measured based on the net realizable value, that is, the difference between the discounted value of the expected future cash flows, based on the original effective interest rate, and the amortized cost basis of the loan. For these loans, the expected credit loss is equal to the amount by which the net realizable value of the loan is less than the amortized cost basis of the loan (which is net of previous charge-offs and deferred loan fees and costs), except when the loan is collateral-dependent, that is, when foreclosure is probable or the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In these cases, expected credit loss is measured as the difference between the amortized cost basis of the loan and the fair value of the collateral. The fair value of the collateral is adjusted for the estimated cost to sell if repayment or satisfaction of a loan is dependent on the sale (rather than only on the operation) of the collateral. The Company has determined that non-accrual loans do not share similar risk characteristics with other loans and these loans are individually evaluated for estimated allowance for credit losses. The Company, through its credit monitoring process, may also identify other loans that do no share similar risk characteristics and individually evaluate such loans. The starting point for determining the fair value of collateral is to obtain external appraisals or evaluations (new or updated) which are generally obtained annually. The valuation techniques used in preparing appraisals or evaluations (new or updated) include the cost approach, income approach, sales comparison approach, or a combination of the preceding valuation techniques. The Company’s credit department reviews appraisals, giving consideration to the highest and best use of the collateral. The appraisals or evaluations (new or updated) are reviewed at least quarterly and more frequently based on current market conditions, including deterioration in a borrower’s financial condition and when property values may be subject to significant volatility. Adjustments may be made to the fair value of the collateral after review and acceptance of the collateral appraisal or evaluation (new or updated). Loans that Share Similar Risk Characteristics with other Loans. For estimating the allowance for loans that share similar risk characteristics with other loans, such loans are segregated into loan segments. Loans are designated into loan segments based on loans pooled by product types and similar risk characteristics or areas of risk concentration. In determining the ACL, the Company derives an estimated credit loss assumption from a model that categorizes loan pools based on loan type which is further segregated by the credit quality indicators. This model calculates an expected loss percentage for each loan segment by considering the non-discounted simple annual average historical loss rate of each loan segment (calculated through an “open pool” method), multiplying the loss rate by the amortized loan balance and incorporating that segment’s internally generated prepayment speed assumption and contractually scheduled remaining principal pay downs on a loan level basis. The annual historical loss rates are adjusted over a reasonable economic forecast period by a multiplier that is calculated based upon current national economic forecasts as a proportion of each segment’s historical average loss levels. The Company will then revert from the economic forecast period back to the historical average loss rate in a straight-line basis. After the reversion period, the loans will be assumed to experience their historical loss rate for the remainder of their contractual lives. The model applies the expected loss rate over the projected cash flows at the the individual loan level and then aggregates the losses by loan segment in determining their quantitative allowance. The Company will also include qualitative adjustments to adjust the p ortfolio over the remaining lives of the loans to the extent the current or future market conditions are believed to vary substantially from historical conditions in regards to: • lending policies and procedures; • i nternational, national, regional and local economic business conditions and developments that affect the collectability of the portfolio, including the condition of various markets; • the nature and volume of the loan portfolio including the terms of the loans; • the experience, ability, and depth of the lending management and other relevant staff; • the volume and severity of past due and adversely classified or graded loans and the volume of non-accrual loans; • the quality of our loan review system; • the value of underlying collateral for collateralized loans; • the existence and effect of any concentrations of credit, and changes in the level of concentrations; and • the effect of external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the existing portfolio. The Company regularly reviews loans in the portfolio to assess credit quality indicators and to determine the appropriate loan classification and grading in accordance with applicable bank regulations. The primary credit quality indicator for residential and consumer loans is the days past due status, which consists of the following categories: 1) performing loans; 2) 30 to 89 days past due loans; and 3) non-accrual and ninety days or more past due loans. The primary credit quality indicator for commercial loans is the Company’s internal risk rating system, which includes the following categories: 1) pass loans; 2) special mention loans; 3) substandard loans; and 4) doubtful or loss loans. Such credit quality indicators are regularly monitored and incorporated into the Company’s allowance estimate. The following paragraphs further define the internal risk ratings for commercial loans. Pass Loans. These ratings represent loans that are of acceptable, good or excellent quality with very limited to no risk. Loans that do not have one of the following ratings are considered pass loans. Special Mention Loans. These ratings represent loans that are assigned special mention per the regulatory definition. Special mention loans are currently protected but are potentially weak. The credit risk may be relatively minor yet constitute an undue and unwarranted risk in light of the circumstances surrounding a specific loan. The rating may be used to identify credit with potential weaknesses that if not corrected may weaken the loan to the point of inadequately protecting the bank’s credit position. Examples include a lack of supervision, inadequate loan agreement, condition, or control of collateral, incomplete, or improper documentation, deviations from lending policy, and adverse trends in operations or economic conditions. Substandard Loans. This rating represents loans that are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged. A loan so classified must have a well-defined weakness that jeopardizes the liquidation of the debt. These loans are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. Loss potential, while existing in the aggregated amount of substandard loans, does not have to exist in an individual loan classified substandard. Doubtful/Loss Loans. A loan classified as doubtful has the characteristics that make collection in full, on the basis of currently existing facts, conditions, and values, highly improbable. The possibility of loss is extremely high, but because of pending factors, which may work to the advantage and strengthening of the loan, its classification as loss is deferred until its more exact status may be determined. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral and refinancing plans. Loans are classified as loss when they are deemed to be not collectible and of such little value that continuance as an active asset of the Bank is not warranted. Loans classified as loss must be charged-off. Assignment of this classification does not mean that an asset has absolutely no recovery or salvage value, but that it is not practical or desirable to defer writing off a basically worthless asset, even though partial recovery may be attained in the future. Restructured Loans A restructured loan is considered a troubled debt restructuring (“TDR”) if the creditor, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. The Company periodically enters into restructure agreements with borrowers whereby the loans were previously identified as TDRs. When such circumstances occur, the Company carefully evaluates the facts of the subsequent restructure to determine the appropriate accounting and under certain circumstances it may be acceptable not to account for the subsequently restructured loan as a TDR. When assessing whether a concession has been granted by the Company, any prior forgiveness on a cumulative basis is considered a continuing concession. The Company has made the following types of loan modifications, some of which were considered a TDR: • reduction of the stated interest rate for the remaining term of the debt; • extension of the maturity date(s) at a stated rate of interest lower than the current market rate for newly originated debt having similar risk characteristics; and • reduction of the face amount of the debt as stated in the debt agreements. The Company recognizes that while borrowers may experience deterioration in their financial condition, many continue to be creditworthy borrowers who have the willingness and capacity for debt repayment. In determining whether non-restructured or performing loans issued to a single or related party group of borrowers should continue to accrue interest when the borrower has other loans that are non-performing or are TDRs, the Company on a quarterly or more frequent basis performs an updated and comprehensive assessment of the willingness and capacity of the borrowers to timely and ultimately repay their total debt obligations, including contingent obligations. Such analysis takes into account current financial information about the borrowers and financially responsible guarantors, if any, including for example: • analysis of global, i.e., aggregate debt service for total debt obligations; • assessment of the value and security protection of collateral pledged using current market conditions and alternative market assumptions across a variety of potential future situations; and • loan structures and related covenants. On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) was signed into law which includes many provisions that impact the Company and its customers. The banking regulatory agencies have encouraged banks to work with borrowers who have been impacted by the coronavirus disease of 2019 (“COVID-19”) and the CARES Act, along with related regulatory guidance, allows banks to not designate certain modifications as TDRs that otherwise may have been classified as TDRs. In general, in order to qualify for such treatment, the modifications need to be short-term and made on a good faith basis in response to the COVID-19 pandemic to borrowers who were current prior to the modification. The Company has made such modifications to assist borrowers impacted by the COVID-19 pandemic. The allowance for credit losses on a TDR is measured using the same method as all other loans held for investment. For a TDR that is individually reviewed and not collateral-dependent, the value of the concession can only be measured using the discounted cash flow method. When the value of a concession is measured using the discounted cash flow method, the ACL is determined by discounting the expected future cash flows at the original interest of the loan.
Allowance for Credit Losses - Off-Balance Sheet Credit Exposures	Allowance for Credit Losses - Off-Balance Sheet Credit ExposuresThe Company maintains a separate allowance for off-balance sheet credit exposures, including unfunded loan commitments, which is included in other liabilities on the Company’s statements of financial condition. The Company estimates the amount of expected losses by calculating a commitment usage factor over the contractual period for exposures and applying the loss factors used in the allowance for credit loss methodology to the results of the usage calculation to estimate the liability for credit losses related to unfunded commitments for each loan type. No credit loss estimate is reported for off-balance sheet credit exposures that are unconditionally cancellable by the Bank or for unfunded amounts under such arrangements that may be drawn prior to the cancellation of the arrangement.
Lessee Leases	Leases The Company leases certain land, premises and equipment from third parties. A lessee lease is classified as an operating lease unless it meets certain criteria (e.g., lease contains option to purchase that Company is reasonably certain to exercise), in which case it is classified as a finance lease. Effective January 1, 2019, operating leases are included in net premises and equipment and other liabilities on the Company’s statements of financial condition and lease expense for lease payments is recognized on a straight-line basis over the lease term. Finance leases are included in net premises and equipment and other borrowed funds on the Company’s statements of financial condition. Right-of-use (“ROU”) assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. An ROU asset represents the right to use the underlying asset for the lease term and also includes any direct costs and payments made prior to lease commencement and excludes lease incentives. When an implicit rate is not available, an incremental borrowing rate based on the information available at commencement date is used in determining the present value of the lease payments. A lease term may include an option to extend or terminate the lease when it is reasonably certain the option will be exercised. The Company accounts for lease and nonlease components (e.g., common-area maintenance) together as a single combined lease component for all asset classes. Short-term leases of 12 months or less are excluded from accounting guidance; as a result, the lease payments are recognized on a straight-line basis over the lease term and the leases are not reflected on the Company’s statements of financial condition. Renewal and termination options are considered when determining short-term leases. Leases are accounted for on an individual lease level.
Lessor Leases	The Company also leases certain premises and equipment to third parties. A lessor lease is classified as an operating lease unless it meets certain criteria that would classify it as either a sales-type lease or a direct financing lease. For additional information relating to leases, see Note 4.
Revenue Recognition	Revenue Recognition The Company recognizes revenue when services or products are transferred to customers in an amount that reflects the consideration to which the Company expects to be entitled. The Company’s principal source of revenue is interest income from debt securities and loans. Revenue from contracts with customers within the scope of ASC Topic 606 was $40,184,000 and $54,608,000 for the nine months ended September 30, 2020 and 2019, respectively, and largely consisted of revenue from service charges and other fees from deposits (e.g., overdraft fees, ATM fees, debit card fees). Due to the short-term nature of the Company’s contracts with customers, an insignificant amount of receivables related to such revenue was recorded at September 30, 2020 and December 31, 2019 and there were no impairment losses recognized. Policies specific to revenue from contracts with customers include the following: Service Charges. Revenue from service charges consists of service charges and fees on deposit accounts under depository agreements with customers to provide access to deposited funds and, when applicable, pay interest on deposits. Service charges on deposit accounts may be transactional or non-transactional in nature. Transactional service charges occur in the form of a service or penalty and are charged upon the occurrence of an event (e.g., overdraft fees, ATM fees, wire transfer fees). Transactional service charges are recognized as services are delivered to and consumed by the customer, or as penalty fees are charged. Non-transactional service charges are charges that are based on a broader service, such as account maintenance fees and dormancy fees, and are recognized on a monthly basis.
Accounting Guidance Adopted in 2020	Accounting Guidance Adopted in 2020 The ASC is the FASB officially recognized source of authoritative GAAP applicable to all public and non-public non-governmental entities. Rules and interpretive releases of the Securities and Exchange Commission (“SEC”) under the authority of the federal securities laws are also sources of authoritative GAAP for the Company as an SEC registrant. All other accounting literature is non-authoritative. The following paragraphs provide descriptions of recently adopted ASU’s that may have had a material effect on the Company’s financial position or results of operations. ASU 2017-04 - Intangibles - Goodwill and Other. In January 2017, FASB amended ASC Topic 350 to simplify the measurement of goodwill by eliminating Step 2 from the goodwill impairment test. Instead, under these amendments, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss should not exceed the total amount of goodwill allocated to that reporting unit. The amendments were effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2019. The Company has goodwill from prior business combinations and performs an annual impairment test or more frequently if changes or circumstances occur that would more-likely-than-not reduce the fair value of the reporting unit below its carrying value. Although the Company cannot anticipate future goodwill impairment assessments, based on the most recent assessment, it is unlikely that an impairment amount would need to be calculated and, therefore, at adoption there was no impact from these amendments to the Company’s financial position and results of operations. In addition, the current accounting policies and processes were not changed, except for the elimination of the Step 2 analysis. For additional information regarding goodwill impairment testing, see Note 5. ASU 2016-13 Credit Losses. In June 2016, FASB amended ASC Topic 326 to replace the incurred loss model with a methodology that reflects current expected credit losses (“CECL”) over the life of the loan and requires consideration of a broader range of reasonable and supportable information to calculate credit loss estimates. The amendments were effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2019. The Company adopted the amendments on January 1, 2020 using the modified retrospective approach. The financial statement results and accounting policies beginning January 1, 2020 are presented under AS C Topic 326, whereas prior periods continue to be reported in accordance with previously applicable GAAP. The Company recorded a net reduction of $12,347,000 in retained earnings due to the adoption of the amendments. The transition adjustment included an increase in the ACL on loans of $3,720,000, an increase in the ACL on off-balance sheet credit exposures of $12,817,000, and a corresponding increase in deferred tax assets of $4,190,000. The Company developed internal implementation controls over the development of the ACL model and resulting financial statement disclosures. The Company has adjusted its processes and procedures to calculate the ACL, including changes in assumptions and estimates to consider expected credit losses over the life of th e loan versus the prior accounting practice that utilized the incurred loss model. The Company also developed new procedures for determining an ACL related to held-to-maturity debt securities and the accounting policies and procedures for other-than-temporary impairment on available-for-sale debt securities were replaced with an allowance approach. The Company engaged a third-party vendor solution to evaluate the new methodology, including model validation, adjusting assumptions utilized, and to review the accuracy of the financial statement disclosures. For additional information on the allowances for credit losses, see Notes 2 and 3.

Debt Securities (Tables)

Debt Securities (Tables)	9 Months Ended
	Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Amortized cost, gross unrealized gains and losses and fair value of debt securities	The following tables present the amortized cost, the gross unrealized gains and losses and the fair value of the Company’s debt securities: September 30, 2020 (Dollars in thousands) Amortized Gross Gross Fair Available-for-sale U.S. government and federal agency $ 40,082 297 (239) 40,140 U.S. government sponsored enterprises 9,767 58 — 9,825 State and local governments 1,192,905 82,509 (38) 1,275,376 Corporate bonds 347,400 13,647 (23) 361,024 Residential mortgage-backed securities 1,255,016 21,551 (709) 1,275,858 Commercial mortgage-backed securities 1,104,252 59,075 (2) 1,163,325 Total available-for-sale $ 3,949,422 177,137 (1,011) 4,125,548 Held-to-maturity State and local governments $ 193,509 13,068 — 206,577 Total held-to-maturity $ 193,509 13,068 — 206,577 December 31, 2019 (Dollars in thousands) Amortized Gross Gross Fair Available-for-sale U.S. government and federal agency $ 20,061 48 (65) 20,044 U.S. government sponsored enterprises 42,724 953 — 43,677 State and local governments 679,784 22,694 (80) 702,398 Corporate bonds 155,665 1,938 (1) 157,602 Residential mortgage-backed securities 731,766 7,507 (549) 738,724 Commercial mortgage-backed securities 891,374 22,825 (1,392) 912,807 Total available-for-sale $ 2,521,374 55,965 (2,087) 2,575,252 Held-to-maturity State and local governments $ 224,611 9,785 — 234,396 Total held-to-maturity $ 224,611 9,785 — 234,396
Amortized cost and fair value of securities by contractual maturity	The following table presents the amortized cost and fair value of available-for-sale and held-to-maturity debt securities by contractual maturity at September 30, 2020. Actual maturities may differ from expected or contractual maturities since some issuers have the right to prepay obligations with or without prepayment penalties. September 30, 2020 Available-for-Sale Held-to-Maturity (Dollars in thousands) Amortized Cost Fair Value Amortized Cost Fair Value Due within one year $ 119,874 121,303 — — Due after one year through five years 264,927 277,758 19,543 20,996 Due after five years through ten years 263,208 277,022 69,924 75,680 Due after ten years 942,145 1,010,282 104,042 109,901 1,590,154 1,686,365 193,509 206,577 Mortgage-backed securities 1 2,359,268 2,439,183 — — Total $ 3,949,422 4,125,548 193,509 206,577 ______________________________ 1 Mortgage-backed securities, which have prepayment provisions, are not assigned to maturity categories due to fluctuations in their prepayment speeds.
Proceeds from sales and calls of debt securities and the associated gains and losses	Proceeds from sales and calls of debt securities and the associated gains and losses that have been included in earnings are listed below: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Available-for-sale Proceeds from sales and calls of debt securities $ 69,304 401,701 184,088 878,072 Gross realized gains 1 102 14,329 1,206 18,613 Gross realized losses 1 (78) (518) (192) (4,447) Held-to-maturity Proceeds from calls of debt securities 9,280 16,365 29,530 48,940 Gross realized gains 1 — — 1 2 Gross realized losses 1 — — — (10) ______________________________ 1 The gain or loss on the sale or call of each debt security is determined by the specific identification method.
AFS debt securities in an unrealized loss position with no ACL recorded	The following table summarizes available-for-sale debt securities that were in an unrealized loss position for which an ACL has not been recorded, based on the length of time the individual securities have been in an unrealized loss position. The number of available-for-sale debt securities in an unrealized position is also disclosed. September 30, 2020 Number Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Available-for-sale U.S. government and federal agency 19 $ 13,656 (230) 663 (9) 14,319 (239) State and local governments 11 5,383 (38) — — 5,383 (38) Corporate bonds 6 11,029 (23) — — 11,029 (23) Residential mortgage-backed securities 28 282,912 (709) 27 — 282,939 (709) Commercial mortgage-backed securities 1 11,035 (2) — — 11,035 (2) Total available-for-sale 65 $ 324,015 (1,002) 690 (9) 324,705 (1,011) December 31, 2019 Number Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Available-for-sale U.S. government and federal agency 20 $ 464 — 9,902 (65) 10,366 (65) State and local governments 12 19,044 (80) — — 19,044 (80) Corporate bonds 2 7,378 (1) — — 7,378 (1) Residential mortgage-backed securities 35 85,562 (234) 29,038 (315) 114,600 (549) Commercial mortgage-backed securities 19 177,051 (1,293) 7,697 (99) 184,748 (1,392) Total available-for-sale 88 $ 289,499 (1,608) 46,637 (479) 336,136 (2,087)
Credit quality indictors for HTM debt securities	The following table summarizes the amortized cost of held-to-maturity debt securities aggregated by NRSRO credit rating: (Dollars in thousands) September 30, December 31, Held-to-maturity S&P: AAA / Moody’s: Aaa $ 40,735 65,217 S&P: AA+, AA, AA- / Moody’s: Aa1, Aa2, Aa3 125,573 130,316 S&P: A+, A, A- / Moody’s: A1, A2, A3 27,201 28,689 Not rated by either entity — 389 Total held-to-maturity $ 193,509 224,611

Loans Receivable, Net (Tables)

Loans Receivable, Net (Tables)	9 Months Ended
	Sep. 30, 2020
Receivables [Abstract]
Summary of loans receivable	The following table presents loans receivable for each portfolio segment of loans: (Dollars in thousands) September 30, December 31, Residential real estate $ 862,614 926,388 Commercial real estate 6,201,817 5,579,307 Other commercial 3,593,322 2,094,254 Home equity 646,850 617,201 Other consumer 314,128 295,660 Loans receivable 11,618,731 9,512,810 Allowance for credit losses (164,552) (124,490) Loans receivable, net $ 11,454,179 9,388,320 Net deferred origination (fees) costs included in loans receivable $ (38,712) (6,964) Net purchase accounting (discounts) premiums included in loans receivable $ (18,063) (21,574) Accrued interest receivable on loans $ 65,806 40,962
Summary of the activity in the ACL	The following tables summarize the activity in the ACL: Three Months ended September 30, 2020 (Dollars in thousands) Total Residential Commercial Other Home Other Balance at beginning of period $ 162,509 9,986 89,104 48,838 9,962 4,619 Credit loss expense (reversal) 2,869 (216) 5,208 1,199 (2,526) (796) Charge-offs (2,630) — (445) (1,598) (99) (488) Recoveries 1,804 35 530 314 93 832 Balance at end of period $ 164,552 9,805 94,397 48,753 7,430 4,167 Three Months ended September 30, 2019 (Dollars in thousands) Total Residential Commercial Other Home Other Balance at beginning of period $ 129,054 10,695 72,447 36,259 5,801 3,852 Credit loss expense (reversal) — (325) (1,480) 1,220 (777) 1,362 Charge-offs (5,890) (141) (1,858) (1,399) — (2,492) Recoveries 2,371 8 549 778 17 1,019 Balance at end of period $ 125,535 10,237 69,658 36,858 5,041 3,741 Nine Months ended September 30, 2020 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 124,490 10,111 69,496 36,129 4,937 3,817 Impact of adopting CECL 3,720 3,584 10,533 (13,759) 3,400 (38) Acquisitions 49 — 49 — — — Credit loss expense (reversal) 39,165 (3,923) 14,084 28,358 (860) 1,506 Charge-offs (7,865) (21) (625) (3,471) (293) (3,455) Recoveries 4,993 54 860 1,496 246 2,337 Balance at end of period $ 164,552 9,805 94,397 48,753 7,430 4,167 Nine Months ended September 30, 2019 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 131,239 10,631 72,448 38,160 5,811 4,189 Credit loss expense (reversal) 57 (152) (1,824) (524) (786) 3,343 Charge-offs (12,090) (482) (2,267) (2,597) (28) (6,716) Recoveries 6,329 240 1,301 1,819 44 2,925 Balance at end of period $ 125,535 10,237 69,658 36,858 5,041 3,741
Loan portfolio aging analysis	The following tables present an aging analysis of the amortized cost basis of loans: September 30, 2020 (Dollars in thousands) Total Residential Commercial Other Home Other Accruing loans 30-59 days past due $ 9,534 520 2,662 2,782 2,160 1,410 Accruing loans 60-89 days past due 8,097 1,666 2,954 2,263 977 237 Accruing loans 90 days or more past due 2,952 217 1,426 1,102 80 127 Non-accrual loans with no ACL 32,047 3,213 16,318 9,441 2,804 271 Non-accrual loans with ACL 4,303 275 1,980 1,930 87 31 Total past due and non-accrual loans 56,933 5,891 25,340 17,518 6,108 2,076 Current loans receivable 11,561,798 856,723 6,176,477 3,575,804 640,742 312,052 Total loans receivable $ 11,618,731 862,614 6,201,817 3,593,322 646,850 314,128 December 31, 2019 (Dollars in thousands) Total Residential Commercial Other Home Other Accruing loans 30-59 days past due $ 15,944 3,403 4,946 4,685 1,040 1,870 Accruing loans 60-89 days past due 7,248 749 2,317 1,190 1,902 1,090 Accruing loans 90 days or more past due 1,412 753 64 143 — 452 Non-accrual loans 30,883 4,715 15,650 6,592 3,266 660 Total past due and non-accrual loans 55,487 9,620 22,977 12,610 6,208 4,072 Current loans receivable 9,457,323 916,768 5,556,330 2,081,644 610,993 291,588 Total loans receivable $ 9,512,810 926,388 5,579,307 2,094,254 617,201 295,660
Collateral dependent loans	The following table presents the amortized cost basis of collateral-dependent loans by collateral type: September 30, 2020 (Dollars in thousands) Total Residential Commercial Other Home Other Business assets $ 5,080 — 84 4,996 — — Residential real estate 4,201 1,536 658 — 1,954 53 Other real estate 13,572 31 12,880 624 21 16 Other 132 — — 16 — 116 Total $ 22,985 1,567 13,622 5,636 1,975 185
Summary of TDRs	The following tables present the loans modified as TDRs that occurred during the periods presented and the TDRs that occurred within the previous twelve months that subsequently defaulted: Three Months ended September 30, 2020 (Dollars in thousands) Total Residential Commercial Other Home Other TDRs that occurred during the period Number of loans 6 — 5 1 — — Pre-modification recorded balance $ 7,482 — 6,648 834 — — Post-modification recorded balance $ 7,482 — 6,648 834 — — TDRs that subsequently defaulted Number of loans — — — — — — Recorded balance $ — — — — — — Three Months ended September 30, 2019 (Dollars in thousands) Total Residential Commercial Other Home Other TDRs that occurred during the period Number of loans 6 — 4 2 — — Pre-modification recorded balance $ 3,168 — 3,067 101 — — Post-modification recorded balance $ 3,168 — 3,067 101 — — TDRs that subsequently defaulted Number of loans — — — — — — Recorded balance $ — — — — — — Nine Months ended September 30, 2020 (Dollars in thousands) Total Residential Commercial Other Home Other TDRs that occurred during the period Number of loans 16 1 10 4 1 — Pre-modification recorded balance $ 14,945 210 13,392 1,304 39 — Post-modification recorded balance $ 14,945 210 13,392 1,304 39 — TDRs that subsequently defaulted Number of loans — — — — — — Recorded balance $ — — — — — — Nine Months ended September 30, 2019 (Dollars in thousands) Total Residential Commercial Other Home Other TDRs that occurred during the period Number of loans 14 1 5 4 1 3 Pre-modification recorded balance $ 5,261 117 4,102 668 103 271 Post-modification recorded balance $ 5,247 123 4,102 668 103 251 TDRs that subsequently defaulted Number of loans 1 — — — — 1 Recorded balance $ 305 — — — — 305
Credit quality indicators for commercial loans	The following tables present the amortized cost in commercial real estate and other commercial loans based on the Company’s internal risk rating. The date of a modification, renewal or extension of a loan is considered for the year of origination if the terms of the loan are as favorable to the Company as the terms are for a comparable loan to other borrowers with similar credit risk. September 30, 2020 (Dollars in thousands) Total Pass Special Mention Substandard Doubtful/ Commercial real estate loans Term loans by origination year 2020 (year-to-date) $ 1,023,640 1,018,529 697 4,414 — 2019 1,149,893 1,141,014 335 8,544 — 2018 986,619 947,230 1,190 38,199 — 2017 786,907 756,583 — 30,324 — 2016 526,236 507,694 206 18,336 — Prior 1,581,948 1,546,314 — 35,286 348 Revolving loans 146,574 143,265 691 2,617 1 Total $ 6,201,817 6,060,629 3,119 137,720 349 Other commercial loans Term loans by origination year 2020 (year-to-date) $ 1,790,810 1,784,359 606 5,845 — 2019 335,126 330,303 — 4,820 3 2018 281,578 275,011 — 6,566 1 2017 287,150 281,371 — 5,323 456 2016 191,092 188,849 — 2,066 177 Prior 239,070 229,806 — 8,100 1,164 Revolving loans 468,496 453,105 — 14,416 975 Total $ 3,593,322 3,542,804 606 47,136 2,776
Credit quality indicators for RRE and consumer loans	The following tables present the amortized cost in residential real estate, home equity and other consumer loans based on payment performance: September 30, 2020 (Dollars in thousands) Total Performing 30-89 Days Past Due Non-Accrual and 90 Days or More Past Due Residential real estate loans Term loans by origination year 2020 (year-to-date) $ 141,655 141,655 — — 2019 228,558 228,558 — — 2018 129,077 128,043 791 243 2017 92,899 92,899 — — 2016 65,216 64,382 — 834 Prior 202,810 198,787 1,395 2,628 Revolving loans 2,399 2,399 — — Total $ 862,614 856,723 2,186 3,705 Home equity loans Term loans by origination year 2020 (year-to-date) $ 75 75 — — 2019 1,028 992 — 36 2018 1,862 1,861 — 1 2017 1,745 1,745 — — 2016 1,047 1,047 — — Prior 17,337 15,599 1,059 679 Revolving loans 623,756 619,423 2,078 2,255 Total $ 646,850 640,742 3,137 2,971 Other consumer loans Term loans by origination year 2020 (year-to-date) $ 106,569 106,501 56 12 2019 75,743 75,340 354 49 2018 49,929 49,737 144 48 2017 21,930 21,829 62 39 2016 12,424 12,278 80 66 Prior 22,250 21,106 932 212 Revolving loans 25,283 25,261 19 3 Total $ 314,128 312,052 1,647 429
Summary of ACL and loans receivable	The following table disclosed the recorded investment in loans and the balance in the allowance separated by loans individually evaluated and collectively evaluated for impairment: December 31, 2019 (Dollars in thousands) Total Residential Commercial Other Home Other Loans receivable Individually evaluated for impairment $ 94,504 7,804 58,609 21,475 3,745 2,871 Collectively evaluated for impairment 9,418,306 918,584 5,520,698 2,072,779 613,456 292,789 Total loans receivable $ 9,512,810 926,388 5,579,307 2,094,254 617,201 295,660 Allowance for loan and lease losses Individually evaluated for impairment $ 95 — 73 10 — 12 Collectively evaluated for impairment 124,395 10,111 69,423 36,119 4,937 3,805 Total allowance for loan and lease losses $ 124,490 10,111 69,496 36,129 4,937 3,817
Summary of impaired loans	The following table disclosed information related to impaired loans: At or for the Year ended December 31, 2019 (Dollars in thousands) Total Residential Commercial Other Home Other Loans with a specific valuation allowance Recorded balance $ 5,388 — 5,343 10 — 35 Unpaid principal balance 5,388 — 5,343 10 — 35 Specific valuation allowance 95 — 73 10 — 12 Average balance 10,378 409 6,341 3,490 24 114 Loans without a specific valuation allowance Recorded balance 89,116 7,804 53,266 21,465 3,745 2,836 Unpaid principal balance 99,355 9,220 57,735 24,758 4,494 3,148 Average balance 93,338 9,879 59,107 18,079 3,486 2,787 Total Recorded balance $ 94,504 7,804 58,609 21,475 3,745 2,871 Unpaid principal balance 104,743 9,220 63,078 24,768 4,494 3,183 Specific valuation allowance 95 — 73 10 — 12 Average balance 103,716 10,288 65,448 21,569 3,510 2,901

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Assets and liabilities, lessee	The following table summarizes the Company’s leases: September 30, 2020 December 31, 2019 (Dollars in thousands) Finance Operating Finance Operating ROU assets $ 5,999 6,537 Accumulated depreciation (212) (917) Net ROU assets $ 5,787 47,329 5,620 41,453 Lease liabilities $ 5,917 50,089 5,671 43,904 Weighted-average remaining lease term 24 years 17 years 24 years 19 years Weighted-average discount rate 2.6 % 3.5 % 3.0 % 3.7 %
Operating lease liability maturity	Maturities of lease liabilities consist of the following: September 30, 2020 (Dollars in thousands) Finance Operating Maturing within one year $ 259 4,608 Maturing one year through two years 265 4,431 Maturing two years through three years 270 3,961 Maturing three years through four years 277 3,914 Maturing four years through five years 285 3,869 Thereafter 6,808 48,432 Total lease payments 8,164 69,215 Present value of lease payments Short-term 214 2,973 Long-term 5,703 47,116 Total present value of lease payments 5,917 50,089 Difference between lease payments and present value of lease payments $ 2,247 19,126
Finance lease liability maturity	Maturities of lease liabilities consist of the following: September 30, 2020 (Dollars in thousands) Finance Operating Maturing within one year $ 259 4,608 Maturing one year through two years 265 4,431 Maturing two years through three years 270 3,961 Maturing three years through four years 277 3,914 Maturing four years through five years 285 3,869 Thereafter 6,808 48,432 Total lease payments 8,164 69,215 Present value of lease payments Short-term 214 2,973 Long-term 5,703 47,116 Total present value of lease payments 5,917 50,089 Difference between lease payments and present value of lease payments $ 2,247 19,126
Components of lease expense	The components of lease expense consist of the following: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Finance lease cost Amortization of ROU assets $ 59 16 174 48 Interest on lease liabilities 40 2 121 6 Operating lease cost 1,254 1,057 3,553 2,967 Short-term lease cost 88 102 266 330 Variable lease cost 264 236 977 657 Sublease income (2) (2) (5) (5) Total lease expense $ 1,703 1,411 5,086 4,003 Supplemental cash flow information related to leases is as follows: Three Months ended September 30, 2020 September 30, 2019 (Dollars in thousands) Finance Operating Finance Operating Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 40 706 2 565 Financing cash flows 23 N/A 21 N/A Nine Months ended September 30, 2020 September 30, 2019 (Dollars in thousands) Finance Operating Finance Operating Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 121 1,994 6 1,541 Financing cash flows 67 N/A 63 N/A

Goodwill (Tables)

Goodwill (Tables)	9 Months Ended
	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of goodwill	The following schedule discloses the changes in the carrying value of goodwill: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Net carrying value at beginning of period $ 513,355 330,887 456,418 289,586 Acquisitions and adjustments 658 125,535 57,595 166,836 Net carrying value at end of period $ 514,013 456,422 514,013 456,422

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	9 Months Ended
	Sep. 30, 2020
Equity Method Investments and Joint Ventures [Abstract]
Carrying amounts of consolidated VIEs' assets and liabilities	The following table summarizes the carrying amounts of the consolidated VIEs’ assets and liabilities included in the Company’s statements of financial condition and are adjusted for intercompany eliminations. All assets presented can be used only to settle obligations of the consolidated VIEs and all liabilities presented consist of liabilities for which creditors and other beneficial interest holders therein have no recourse to the general credit of the Company. (Dollars in thousands) September 30, December 31, Assets Loans receivable $ 90,183 84,390 Accrued interest receivable 457 63 Other assets 55,863 54,692 Total assets $ 146,503 139,145 Liabilities Other borrowed funds $ 27,050 23,149 Accrued interest payable 167 36 Other liabilities 47 123 Total liabilities $ 27,264 23,308
Future unfunded contingent commitments	Future unfunded contingent commitments related to the Company’s LIHTC investments at September 30, 2020 are as follows: (Dollars in thousands) Amount Years ending December 31, 2020 $ 7,608 2021 14,883 2022 14,165 2023 5,277 2024 427 Thereafter 812 Total $ 43,172
Amortization expense and tax credits and other tax benefits recognized for qualified affordable housing project investments	The following table summarizes the amortization expense and the amount of tax credits and other tax benefits recognized for qualified affordable housing project investments during the periods presented. Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Amortization expense $ 1,936 1,609 5,766 4,504 Tax credits and other tax benefits recognized 2,608 2,202 7,771 6,169

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase (Tables)	9 Months Ended
	Sep. 30, 2020
Transfers and Servicing [Abstract]
Carrying value of repurchase agreements	The following table summarizes the carrying value of the Company’s securities sold under agreements to repurchase (“repurchase agreements”) by remaining contractual maturity of the agreements and category of collateral: Overnight and Continuous (Dollars in thousands) September 30, December 31, State and local governments $ 742,753 — Corporate bonds 222,915 — Residential mortgage-backed securities — 312,015 Commercial mortgage-backed securities — 257,809 Total $ 965,668 569,824

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of pre-tax gains or losses	The effect of cash flow hedge accounting on OCI for the periods ending September 30, 2020 and 2019 was as follows: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Amount of loss recognized in OCI $ (76) (1,393) (532) (7,047) Amount of loss reclassified from OCI to net income — (10,315) — (10,816)

Other Expenses (Tables)

Other Expenses (Tables)	9 Months Ended
	Sep. 30, 2020
Other Expenses [Abstract]
Schedule of other expenses	Other expenses consists of the following: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Consulting and outside services 4,050 1,938 8,604 5,715 Mergers and acquisition expenses $ 792 2,058 7,311 4,103 Loan expenses 1 4,060 924 5,867 2,726 Telephone 1,314 1,216 3,865 3,601 Debit card expenses 1,414 1,699 3,704 5,003 VIE amortization and other expenses 1,510 1,427 3,396 2,878 Business development 1,139 1,176 3,110 3,189 Printing and supplies 877 735 2,704 2,246 Postage 851 831 2,479 2,487 Employee expenses 560 1,245 2,247 3,646 Accounting and audit fees 455 365 1,453 1,290 Checking and operating expenses 355 361 1,263 1,353 Legal fees 206 338 1,025 926 ATM expenses 245 299 373 1,312 Other 958 991 2,828 2,679 Total other expenses $ 18,786 15,603 50,229 43,154 ______________________________ 1 Loan expenses include credit loss expense for off-balance sheet credit exposures.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Activity within accumulated other comprehensive income, net of tax	The following table illustrates the activity within accumulated other comprehensive income by component, net of tax: (Dollars in thousands) (Losses) Gains on Available-For-Sale Debt Securities Losses on Derivatives Used for Cash Flow Hedges Total Balance at January 1, 2019 $ (6,613) (2,814) (9,427) Other comprehensive income (loss) before reclassifications 65,284 (5,261) 60,023 Reclassification adjustments for (gains) losses included in net income (10,576) 8,075 (2,501) Net current period other comprehensive income 54,708 2,814 57,522 Balance at September 30, 2019 $ 48,095 — 48,095 Balance at January 1, 2020 $ 40,226 — 40,226 Other comprehensive income (loss) before reclassifications 92,027 (397) 91,630 Reclassification adjustments for gains included in net income (loss) (758) — (758) Net current period other comprehensive income (loss) 91,269 (397) 90,872 Balance at September 30, 2020 $ 131,495 (397) 131,098

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Basic and diluted earnings per share	Basic and diluted earnings per share has been computed based on the following: Three Months ended Nine Months ended (Dollars in thousands, except per share data) September 30, September 30, September 30, September 30, Net income available to common stockholders, basic and diluted $ 77,757 51,610 184,540 153,134 Average outstanding shares - basic 95,411,656 90,294,811 94,704,198 86,911,402 Add: dilutive restricted stock units and stock options 30,920 154,384 43,696 170,776 Average outstanding shares - diluted 95,442,576 90,449,195 94,747,894 87,082,178 Basic earnings per share $ 0.81 0.57 1.95 1.76 Diluted earnings per share $ 0.81 0.57 1.95 1.76 Restricted stock units and stock options excluded from the diluted average outstanding share calculation 1 93,253 4,037 78,605 1,360 ______________________________ 1 Anti-dilution occurs when the unrecognized compensation cost per share of a restricted stock unit or the exercise price of a stock option exceeds the market price of the Company’s stock.

Fair Value of Assets and Liab_2

Fair Value of Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair value measurement of assets measured at fair value on a recurring basis	The following tables disclose the fair value measurement of assets measured at fair value on a recurring basis: Fair Value Measurements (Dollars in thousands) Fair Value Quoted Prices Significant Significant Debt securities, available-for-sale U.S. government and federal agency $ 40,140 — 40,140 — U.S. government sponsored enterprises 9,825 — 9,825 — State and local governments 1,275,376 — 1,275,376 — Corporate bonds 361,024 — 361,024 — Residential mortgage-backed securities 1,275,858 — 1,275,858 — Commercial mortgage-backed securities 1,163,325 — 1,163,325 — Loans held for sale, at fair value 147,937 — 147,937 — Interest rate caps 182 — 182 — Interest rate lock commitment 14,967 — 14,967 — Total assets measured at fair value on a recurring basis $ 4,288,634 — 4,288,634 — TBA hedge $ 1,344 — 1,344 — Total liabilities measured at fair value on a recurring basis $ 1,344 — 1,344 — Fair Value Measurements (Dollars in thousands) Fair Value December 31, 2019 Quoted Prices Significant Significant Debt securities, available-for-sale U.S. government and federal agency $ 20,044 — 20,044 — U.S. government sponsored enterprises 43,677 — 43,677 — State and local governments 702,398 — 702,398 — Corporate bonds 157,602 — 157,602 — Residential mortgage-backed securities 738,724 — 738,724 — Commercial mortgage-backed securities 912,807 — 912,807 — Loans held for sale, at fair value 69,194 — 69,194 — Interest rate lock commitment 1,852 — 1,852 — Total assets measured at fair value on a recurring basis $ 2,646,298 — 2,646,298 — TBA hedge $ 236 — 236 — Total liabilities measured at fair value on a recurring basis $ 236 — 236 —
Fair value measurement of assets measured at fair value on a non-recurring basis	The following tables disclose the fair value measurement of assets with a recorded change during the period resulting from re-measuring the assets at fair value on a non-recurring basis: Fair Value Measurements (Dollars in thousands) Fair Value Quoted Prices Significant Significant Other real estate owned $ 297 — — 297 Collateral-dependent loans, net of ACL 2,284 — — 2,284 Total assets measured at fair value on a non-recurring basis $ 2,581 — — 2,581 Fair Value Measurements (Dollars in thousands) Fair Value December 31, 2019 Quoted Prices Significant Significant Other real estate owned $ 1,983 — — 1,983 Collateral-dependent loans, net of ACL 23 — — 23 Total assets measured at fair value on a non-recurring basis $ 2,006 — — 2,006
Quantitative information about assets measured at fair value on a non-recurring basis for which Level 3 inputs were used	The following tables present additional quantitative information about assets measured at fair value on a non-recurring basis and for which the Company has utilized Level 3 inputs to determine fair value: Fair Value Quantitative Information about Level 3 Fair Value Measurements (Dollars in thousands) Valuation Technique Unobservable Input Range (Weighted-Average) 1 Other real estate owned $ 297 Sales comparison approach Selling costs 8.0% - 10.0% (9.0%) Collateral-dependent loans, net of ACL $ 943 Cost approach Selling costs 10.0% - 10.0% (10.0%) 45 Sales comparison approach Selling costs 10.0% - 10.0% (10.0%) 1,296 Combined approach Selling costs 10.0% - 10.0% (10.0%) $ 2,284 Fair Value December 31, 2019 Quantitative Information about Level 3 Fair Value Measurements (Dollars in thousands) Valuation Technique Unobservable Input Range (Weighted-Average) 1 Other real estate owned $ 1,983 Sales comparison approach Selling costs 6.0% - 10.0% (7.3%) Adjustment to comparables 0.0% - 11.1% (4.5%) Collateral-dependent loans, net of ACL $ 9 Cost approach Selling costs 10.0% - 10.0% (10.0%) 14 Sales comparison approach Adjustment to comparables 0.0% - 0.0% (0.0%) $ 23 ______________________________ 1 The range for selling cost inputs represents reductions to the fair value of the assets.
Carrying amounts and estimated fair values of financial instruments not carried at fair value	The following tables present the carrying amounts, estimated fair values and the level within the fair value hierarchy of the Company’s financial instruments not carried at fair value. Receivables and payables due in one year or less, equity securities without readily determinable fair values and deposits with no defined or contractual maturities are excluded. Fair Value Measurements (Dollars in thousands) Carrying Amount Quoted Prices Significant Significant Financial assets Cash and cash equivalents $ 769,879 769,879 — — Debt securities, held-to-maturity 193,509 — 206,577 — Loans receivable, net of ACL 11,454,179 — — 11,619,887 Total financial assets $ 12,417,567 769,879 206,577 11,619,887 Financial liabilities Term deposits $ 1,098,988 — 1,104,273 — FHLB advances 7,318 — 7,537 — Repurchase agreements and other borrowed funds 998,635 — 998,635 — Subordinated debentures 139,918 — 119,318 — Total financial liabilities $ 2,244,859 — 2,229,763 — Fair Value Measurements (Dollars in thousands) Carrying Amount December 31, 2019 Quoted Prices Significant Significant Financial assets Cash and cash equivalents $ 330,961 330,961 — — Debt securities, held-to-maturity 224,611 — 234,396 — Loans receivable, net of ACL 9,388,320 — — 9,438,121 Total financial assets $ 9,943,892 330,961 234,396 9,438,121 Financial liabilities Term deposits $ 1,011,798 — 1,017,505 — FHLB advances 38,611 — 38,787 — Repurchase agreements and other borrowed funds 598,644 — 598,644 — Subordinated debentures 139,914 — 124,094 — Total financial liabilities $ 1,788,967 — 1,779,030 —

Mergers and Acquisitions (Table

Mergers and Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2020
Business Combinations [Abstract]
Consideration transferred, identifiable net assets acquired and resulting goodwill	The following table discloses the preliminary fair value estimates of the consideration transferred, the total identifiable net assets acquired and the resulting goodwill arising from the SBAZ acquisition. The Company is continuing to obtain information to determine the fair values of assets acquired and liabilities assumed. (Dollars in thousands) SBAZ Fair value of consideration transferred Fair value of Company shares issued $ 112,133 Cash consideration 13,721 Total fair value of consideration transferred 125,854 Recognized amounts of identifiable assets acquired and liabilities assumed Identifiable assets acquired Cash and cash equivalents 57,434 Debt securities 142,174 Loans receivable, net of ACL 451,653 Core deposit intangible 1 2,593 Accrued income and other assets 33,971 Total identifiable assets acquired 687,825 Liabilities assumed Deposits 603,289 Borrowings 10,904 Accrued expenses and other liabilities 5,373 Total liabilities assumed 619,566 Total identifiable net assets 68,259 Goodwill recognized $ 57,595 ______________________________ 1 The core deposit intangible for the acquisition was determined to have an estimated life of 10 years .
Unaudited pro forma summary of the company as if the acquisitions had occurred at the beginning of the period	The following unaudited pro forma summary presents consolidated information of the Company as if the SBAZ acquisition had occurred on January 1, 2019: Three Months ended Nine Months ended (Dollars in thousands) September 30, September 30, September 30, September 30, Net interest income and non-interest income $ 205,070 182,185 567,406 491,830 Net income 77,757 54,000 183,429 159,601

Nature of Operations and Summ_3

Nature of Operations and Summary of Significant Accounting Policies (Details)	9 Months Ended
	Sep. 30, 2020USD ($)numberOfComponentsoperating_segmentquarterdivision	Sep. 30, 2019USD ($)	Jun. 30, 2020USD ($)	Dec. 31, 2019USD ($)	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Number of bank divisions | division	16
Number of operating segments | operating_segment	1
Forecasting period used to determine ACL | quarter	4
Number of components used in methodology in determining ACL | numberOfComponents	2
Maximum term leases will be considered short-term	12 months
Revenue from contracts with customers	$ 40,184,000	$ 54,608,000
Impairment losses on receivables related to contracts with customers	0			$ 0
Adjustment to retained earnings due to adoption of amendments	(2,255,089,000)	(1,953,401,000)	$ (2,203,715,000)	(1,960,733,000)	$ (1,687,376,000)	$ (1,515,854,000)
Allowance for credit losses on loans	164,552,000	125,535,000	162,509,000	124,490,000	129,054,000	131,239,000
Deferred tax asset	$ 0			2,037,000
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member
Retained Earnings Substantially Restricted
Adjustment to retained earnings due to adoption of amendments	$ (629,109,000)	$ (528,599,000)	$ (580,035,000)	(541,050,000)	$ (503,773,000)	$ (473,183,000)
Accounting Standards Update 2016-13
Allowance for credit losses on loans				3,720,000
ACL on off-balance sheet credit exposures				12,817,000
Deferred tax asset				4,190,000
Accounting Standards Update 2016-13 | Retained Earnings Substantially Restricted
Adjustment to retained earnings due to adoption of amendments				$ 12,347,000
Minimum
Period past due to consider loan as delinquent	30 days
Period past due to consider loan as non accrual	90 days
Period past due to consider loan as purchased credit-deteriorated loan	90 days
Number of days delinquent to charge off loans	120 days
Number of years for home equity loan origination term	10 years
Maximum
Period past due to consider loan as delinquent	89 days
Number of years for home equity loan origination term	15 years

Debt Securities - Amortized Cos

Debt Securities - Amortized Cost, Gross Unrealized Gains and Losses and Fair Value of Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Available-for-sale
Amortized cost	$ 3,949,422	$ 2,521,374
Gross unrealized gains	177,137	55,965
Gross unrealized losses	(1,011)	(2,087)
Fair value	4,125,548	2,575,252
Held-to-maturity
Amortized cost	193,509	224,611
Gross unrealized gains	13,068	9,785
Gross unrealized losses	0	0
Fair value	206,577	234,396
U.S. government and federal agency
Available-for-sale
Amortized cost	40,082	20,061
Gross unrealized gains	297	48
Gross unrealized losses	(239)	(65)
Fair value	40,140	20,044
U.S. government sponsored enterprises
Available-for-sale
Amortized cost	9,767	42,724
Gross unrealized gains	58	953
Gross unrealized losses	0	0
Fair value	9,825	43,677
State and local governments
Available-for-sale
Amortized cost	1,192,905	679,784
Gross unrealized gains	82,509	22,694
Gross unrealized losses	(38)	(80)
Fair value	1,275,376	702,398
Held-to-maturity
Amortized cost	193,509	224,611
Gross unrealized gains	13,068	9,785
Gross unrealized losses	0	0
Fair value	206,577	234,396
Corporate bonds
Available-for-sale
Amortized cost	347,400	155,665
Gross unrealized gains	13,647	1,938
Gross unrealized losses	(23)	(1)
Fair value	361,024	157,602
Residential mortgage-backed securities
Available-for-sale
Amortized cost	1,255,016	731,766
Gross unrealized gains	21,551	7,507
Gross unrealized losses	(709)	(549)
Fair value	1,275,858	738,724
Commercial mortgage-backed securities
Available-for-sale
Amortized cost	1,104,252	891,374
Gross unrealized gains	59,075	22,825
Gross unrealized losses	(2)	(1,392)
Fair value	$ 1,163,325	$ 912,807

Debt Securities - Maturity Sche

Debt Securities - Maturity Schedule (Details) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Available-for-Sale, Amortized Cost
Due within one year		$ 119,874
Due after one year through five years		264,927
Due after five years through ten years		263,208
Due after ten years		942,145
Total before mortgage-backed securities		1,590,154
Total		3,949,422	$ 2,521,374
Available-for-Sale, Fair Value
Due within one year		121,303
Due after one year through five years		277,758
Due after five years through ten years		277,022
Due after ten years		1,010,282
Total before mortgage-backed securities		1,686,365
Debt securities, available-for-sale		4,125,548	2,575,252
Held-to-Maturity, Amortized Cost
Due within one year		0
Due after one year through five years		19,543
Due after five years through ten years		69,924
Due after ten years		104,042
Total before mortgage-backed securities		193,509
Total		193,509	224,611
Held-to-Maturity, Fair Value
Due within one year		0
Due after one year through five years		20,996
Due after five years through ten years		75,680
Due after ten years		109,901
Total before mortgage-backed securities		206,577
Total		206,577	$ 234,396
Mortgage-backed securities
Available-for-Sale, Amortized Cost
Mortgage-backed securities	[1]	2,359,268
Available-for-Sale, Fair Value
Mortgage-backed securities	[1]	2,439,183
Held-to-Maturity, Amortized Cost
Mortgage-backed securities	[1]	0
Held-to-Maturity, Fair Value
Mortgage-backed securities	[1]	$ 0
[1]	Mortgage-backed securities, which have prepayment provisions, are not assigned to maturity categories due to fluctuations in their prepayment speeds.

Debt Securities - Proceeds From

Debt Securities - Proceeds From Sales and Calls of Debt Securities and Associates Gains or Losses (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Available-for-sale
Proceeds from sales and calls of debt securities		$ 69,304	$ 401,701	$ 184,088	$ 878,072
Gross realized gains	[1]	102	14,329	1,206	18,613
Gross realized losses	[1]	(78)	(518)	(192)	(4,447)
Held-to-maturity
Proceeds from calls of debt securities		9,280	16,365	29,530	48,940
Gross realized gains	[1]	0	0	1	2
Gross realized losses	[1]	$ 0	$ 0	$ 0	$ (10)
[1]	The gain or loss on the sale or call of each debt security is determined by the specific identification method.

Debt Securities - AFS Debt Secu

Debt Securities - AFS Debt Securities in an Unrealized Loss Position (Details) $ in Thousands	Sep. 30, 2020USD ($)security	Dec. 31, 2019USD ($)security
Available-for-sale, Fair Value
Number of securities | security	65	88
Less than 12 months, fair value	$ 324,015	$ 289,499
Less than 12 months, unrealized loss	(1,002)	(1,608)
12 months or more, fair value	690	46,637
12 months or more, unrealized loss	(9)	(479)
Total, fair value	324,705	336,136
Total, unrealized loss	$ (1,011)	$ (2,087)
U.S. government and federal agency
Available-for-sale, Fair Value
Number of securities | security	19	20
Less than 12 months, fair value	$ 13,656	$ 464
Less than 12 months, unrealized loss	(230)	0
12 months or more, fair value	663	9,902
12 months or more, unrealized loss	(9)	(65)
Total, fair value	14,319	10,366
Total, unrealized loss	$ (239)	$ (65)
State and local governments
Available-for-sale, Fair Value
Number of securities | security	11	12
Less than 12 months, fair value	$ 5,383	$ 19,044
Less than 12 months, unrealized loss	(38)	(80)
12 months or more, fair value	0	0
12 months or more, unrealized loss	0	0
Total, fair value	5,383	19,044
Total, unrealized loss	$ (38)	$ (80)
Corporate bonds
Available-for-sale, Fair Value
Number of securities | security	6	2
Less than 12 months, fair value	$ 11,029	$ 7,378
Less than 12 months, unrealized loss	(23)	(1)
12 months or more, fair value	0	0
12 months or more, unrealized loss	0	0
Total, fair value	11,029	7,378
Total, unrealized loss	$ (23)	$ (1)
Residential mortgage-backed securities
Available-for-sale, Fair Value
Number of securities | security	28	35
Less than 12 months, fair value	$ 282,912	$ 85,562
Less than 12 months, unrealized loss	(709)	(234)
12 months or more, fair value	27	29,038
12 months or more, unrealized loss	0	(315)
Total, fair value	282,939	114,600
Total, unrealized loss	$ (709)	$ (549)
Commercial mortgage-backed securities
Available-for-sale, Fair Value
Number of securities | security	1	19
Less than 12 months, fair value	$ 11,035	$ 177,051
Less than 12 months, unrealized loss	(2)	(1,293)
12 months or more, fair value	0	7,697
12 months or more, unrealized loss	0	(99)
Total, fair value	11,035	184,748
Total, unrealized loss	$ (2)	$ (1,392)

Debt Securities (Details)

Debt Securities (Details)	9 Months Ended
	Sep. 30, 2020USD ($)security
Investments, Debt and Equity Securities [Abstract]
Severity rate on available-for-sale debt securities in an unrealized loss position	5.00%
Number of credit rating categories, highest | security	4
Available-for-sale debt securities past due	$ 0
Interest receivable, available-for-sale debt securities	23,491,000
PCD debt securities acquired	0
ACL on PCD debt securities acquired	0
ACL on available-for-sale debt securities	0
Held-to-maturity debt securities past due	0
Interest receivable, held-to-maturity debt securities	2,079,000
ACL on held-to-maturity debt securities	$ 0

Debt Securities - Credit Qualit

Debt Securities - Credit Quality Indictors for HTM Debt Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
HTM debt securities
Debt securities, held-to-maturity	$ 193,509	$ 224,611
State and local governments
HTM debt securities
Debt securities, held-to-maturity	193,509	224,611
State and local governments | Moody's: Aaa | S&P: AAA | Investment Grade
HTM debt securities
Debt securities, held-to-maturity	40,735	65,217
State and local governments | Moody's: Aa1, Aa2, Aa3 | S&P: AA+, AA, AA- | Investment Grade
HTM debt securities
Debt securities, held-to-maturity	125,573	130,316
State and local governments | Moody's: A1, A2, A3 | S&P: A+, A, A- | Investment Grade
HTM debt securities
Debt securities, held-to-maturity	27,201	28,689
State and local governments | Moody's: Not Rated | S&P: Not Rated | Investment Grade
HTM debt securities
Debt securities, held-to-maturity	$ 0	$ 389

Loans Receivable, Net - Summary

Loans Receivable, Net - Summary of Loans Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Summary of Loans Receivable
Loans receivable	$ 11,618,731		$ 9,512,810
Allowance for credit losses	(164,552)	$ (162,509)	(124,490)	$ (125,535)	$ (129,054)	$ (131,239)
Loans receivable, net	11,454,179		9,388,320
Net deferred origination (fees) costs included in loans receivable	(38,712)		(6,964)
Net purchase accounting (discounts) premiums included in loans receivable	(18,063)		(21,574)
Accrued interest receivable on loans	65,806		40,962
Residential Real Estate
Summary of Loans Receivable
Loans receivable	862,614		926,388
Allowance for credit losses	(9,805)	(9,986)	(10,111)	(10,237)	(10,695)	(10,631)
Commercial Real Estate
Summary of Loans Receivable
Loans receivable	6,201,817		5,579,307
Allowance for credit losses	(94,397)	(89,104)	(69,496)	(69,658)	(72,447)	(72,448)
Other Commercial
Summary of Loans Receivable
Loans receivable	3,593,322		2,094,254
Allowance for credit losses	(48,753)	(48,838)	(36,129)	(36,858)	(36,259)	(38,160)
Home Equity
Summary of Loans Receivable
Loans receivable	646,850		617,201
Allowance for credit losses	(7,430)	(9,962)	(4,937)	(5,041)	(5,801)	(5,811)
Other Consumer
Summary of Loans Receivable
Loans receivable	314,128		295,660
Allowance for credit losses	$ (4,167)	$ (4,619)	$ (3,817)	$ (3,741)	$ (3,852)	$ (4,189)

Loans Receivable, Net - ACL Act

Loans Receivable, Net - ACL Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Allowance for credit losses
Balance at beginning of period	$ 162,509	$ 129,054	$ 124,490	$ 131,239
Impact of adopting CECL			3,720
Acquisitions			49
Credit loss expense (reversal)	2,869	0	39,165	57
Charge-offs	(2,630)	(5,890)	(7,865)	(12,090)
Recoveries	1,804	2,371	4,993	6,329
Balance at end of period	164,552	125,535	164,552	125,535
Residential Real Estate
Allowance for credit losses
Balance at beginning of period	9,986	10,695	10,111	10,631
Impact of adopting CECL			3,584
Acquisitions			0
Credit loss expense (reversal)	(216)	(325)	(3,923)	(152)
Charge-offs	0	(141)	(21)	(482)
Recoveries	35	8	54	240
Balance at end of period	9,805	10,237	9,805	10,237
Commercial Real Estate
Allowance for credit losses
Balance at beginning of period	89,104	72,447	69,496	72,448
Impact of adopting CECL			10,533
Acquisitions			49
Credit loss expense (reversal)	5,208	(1,480)	14,084	(1,824)
Charge-offs	(445)	(1,858)	(625)	(2,267)
Recoveries	530	549	860	1,301
Balance at end of period	94,397	69,658	94,397	69,658
Other Commercial
Allowance for credit losses
Balance at beginning of period	48,838	36,259	36,129	38,160
Impact of adopting CECL			(13,759)
Acquisitions			0
Credit loss expense (reversal)	1,199	1,220	28,358	(524)
Charge-offs	(1,598)	(1,399)	(3,471)	(2,597)
Recoveries	314	778	1,496	1,819
Balance at end of period	48,753	36,858	48,753	36,858
Home Equity
Allowance for credit losses
Balance at beginning of period	9,962	5,801	4,937	5,811
Impact of adopting CECL			3,400
Acquisitions			0
Credit loss expense (reversal)	(2,526)	(777)	(860)	(786)
Charge-offs	(99)	0	(293)	(28)
Recoveries	93	17	246	44
Balance at end of period	7,430	5,041	7,430	5,041
Other Consumer
Allowance for credit losses
Balance at beginning of period	4,619	3,852	3,817	4,189
Impact of adopting CECL			(38)
Acquisitions			0
Credit loss expense (reversal)	(796)	1,362	1,506	3,343
Charge-offs	(488)	(2,492)	(3,455)	(6,716)
Recoveries	832	1,019	2,337	2,925
Balance at end of period	$ 4,167	$ 3,741	$ 4,167	$ 3,741

Loans Receivable, Net (Details)

Loans Receivable, Net (Details) - USD ($) $ in Thousands	Feb. 29, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]
Credit loss expense		$ 2,869	$ 0	$ 39,165	$ 57
PCD loans acquired				3,401
ACL on PCD loans acquired				49
Discount (premium) on PCD loans				13
Interest reversed on non-accrual loans				628
TDR with pre modification loan balance for which OREO was received		2,265	$ 2,982	2,265	$ 2,982
Consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process		765		765		$ 1,744
OREO secured by residential real estate		$ 1,917		1,917		$ 1,504
State Bank of Arizona
Loans and Leases Receivable Disclosure [Line Items]
Credit loss expense				$ 4,794
PCD loans acquired	$ 3,401
ACL on PCD loans acquired	$ 49

Loans Receivable, Net - Aging A

Loans Receivable, Net - Aging Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Loan portfolio aging analysis
Non-accrual loans with no ACL	$ 32,047
Non-accrual loans with ACL	4,303
Non-accrual loans		$ 30,883
Total past due and non-accrual loans	56,933	55,487
Current loans receivable	11,561,798	9,457,323
Total loans receivable	11,618,731	9,512,810
Accruing loans 30-59 days past due
Loan portfolio aging analysis
Accruing loans past due	9,534	15,944
Accruing loans 60-89 days past due
Loan portfolio aging analysis
Accruing loans past due	8,097	7,248
Accruing loans 90 days or more past due
Loan portfolio aging analysis
Accruing loans past due	2,952	1,412
Residential Real Estate
Loan portfolio aging analysis
Non-accrual loans with no ACL	3,213
Non-accrual loans with ACL	275
Non-accrual loans		4,715
Total past due and non-accrual loans	5,891	9,620
Current loans receivable	856,723	916,768
Total loans receivable	862,614	926,388
Residential Real Estate | Accruing loans 30-59 days past due
Loan portfolio aging analysis
Accruing loans past due	520	3,403
Residential Real Estate | Accruing loans 60-89 days past due
Loan portfolio aging analysis
Accruing loans past due	1,666	749
Residential Real Estate | Accruing loans 90 days or more past due
Loan portfolio aging analysis
Accruing loans past due	217	753
Commercial Real Estate
Loan portfolio aging analysis
Non-accrual loans with no ACL	16,318
Non-accrual loans with ACL	1,980
Non-accrual loans		15,650
Total past due and non-accrual loans	25,340	22,977
Current loans receivable	6,176,477	5,556,330
Total loans receivable	6,201,817	5,579,307
Commercial Real Estate | Accruing loans 30-59 days past due
Loan portfolio aging analysis
Accruing loans past due	2,662	4,946
Commercial Real Estate | Accruing loans 60-89 days past due
Loan portfolio aging analysis
Accruing loans past due	2,954	2,317
Commercial Real Estate | Accruing loans 90 days or more past due
Loan portfolio aging analysis
Accruing loans past due	1,426	64
Other Commercial
Loan portfolio aging analysis
Non-accrual loans with no ACL	9,441
Non-accrual loans with ACL	1,930
Non-accrual loans		6,592
Total past due and non-accrual loans	17,518	12,610
Current loans receivable	3,575,804	2,081,644
Total loans receivable	3,593,322	2,094,254
Other Commercial | Accruing loans 30-59 days past due
Loan portfolio aging analysis
Accruing loans past due	2,782	4,685
Other Commercial | Accruing loans 60-89 days past due
Loan portfolio aging analysis
Accruing loans past due	2,263	1,190
Other Commercial | Accruing loans 90 days or more past due
Loan portfolio aging analysis
Accruing loans past due	1,102	143
Home Equity
Loan portfolio aging analysis
Non-accrual loans with no ACL	2,804
Non-accrual loans with ACL	87
Non-accrual loans		3,266
Total past due and non-accrual loans	6,108	6,208
Current loans receivable	640,742	610,993
Total loans receivable	646,850	617,201
Home Equity | Accruing loans 30-59 days past due
Loan portfolio aging analysis
Accruing loans past due	2,160	1,040
Home Equity | Accruing loans 60-89 days past due
Loan portfolio aging analysis
Accruing loans past due	977	1,902
Home Equity | Accruing loans 90 days or more past due
Loan portfolio aging analysis
Accruing loans past due	80	0
Other Consumer
Loan portfolio aging analysis
Non-accrual loans with no ACL	271
Non-accrual loans with ACL	31
Non-accrual loans		660
Total past due and non-accrual loans	2,076	4,072
Current loans receivable	312,052	291,588
Total loans receivable	314,128	295,660
Other Consumer | Accruing loans 30-59 days past due
Loan portfolio aging analysis
Accruing loans past due	1,410	1,870
Other Consumer | Accruing loans 60-89 days past due
Loan portfolio aging analysis
Accruing loans past due	237	1,090
Other Consumer | Accruing loans 90 days or more past due
Loan portfolio aging analysis
Accruing loans past due	$ 127	$ 452

Loans Receivable, Net - Collate

Loans Receivable, Net - Collateral-Dependent Loans (Details) $ in Thousands	Sep. 30, 2020USD ($)
Collateral Dependent Loans
Collateral dependent loans	$ 22,985
Business assets
Collateral Dependent Loans
Collateral dependent loans	5,080
Residential real estate
Collateral Dependent Loans
Collateral dependent loans	4,201
Other real estate
Collateral Dependent Loans
Collateral dependent loans	13,572
Other
Collateral Dependent Loans
Collateral dependent loans	132
Residential Real Estate
Collateral Dependent Loans
Collateral dependent loans	1,567
Residential Real Estate | Business assets
Collateral Dependent Loans
Collateral dependent loans	0
Residential Real Estate | Residential real estate
Collateral Dependent Loans
Collateral dependent loans	1,536
Residential Real Estate | Other real estate
Collateral Dependent Loans
Collateral dependent loans	31
Residential Real Estate | Other
Collateral Dependent Loans
Collateral dependent loans	0
Commercial Real Estate
Collateral Dependent Loans
Collateral dependent loans	13,622
Commercial Real Estate | Business assets
Collateral Dependent Loans
Collateral dependent loans	84
Commercial Real Estate | Residential real estate
Collateral Dependent Loans
Collateral dependent loans	658
Commercial Real Estate | Other real estate
Collateral Dependent Loans
Collateral dependent loans	12,880
Commercial Real Estate | Other
Collateral Dependent Loans
Collateral dependent loans	0
Other Commercial
Collateral Dependent Loans
Collateral dependent loans	5,636
Other Commercial | Business assets
Collateral Dependent Loans
Collateral dependent loans	4,996
Other Commercial | Residential real estate
Collateral Dependent Loans
Collateral dependent loans	0
Other Commercial | Other real estate
Collateral Dependent Loans
Collateral dependent loans	624
Other Commercial | Other
Collateral Dependent Loans
Collateral dependent loans	16
Home Equity
Collateral Dependent Loans
Collateral dependent loans	1,975
Home Equity | Business assets
Collateral Dependent Loans
Collateral dependent loans	0
Home Equity | Residential real estate
Collateral Dependent Loans
Collateral dependent loans	1,954
Home Equity | Other real estate
Collateral Dependent Loans
Collateral dependent loans	21
Home Equity | Other
Collateral Dependent Loans
Collateral dependent loans	0
Other Consumer
Collateral Dependent Loans
Collateral dependent loans	185
Other Consumer | Business assets
Collateral Dependent Loans
Collateral dependent loans	0
Other Consumer | Residential real estate
Collateral Dependent Loans
Collateral dependent loans	53
Other Consumer | Other real estate
Collateral Dependent Loans
Collateral dependent loans	16
Other Consumer | Other
Collateral Dependent Loans
Collateral dependent loans	$ 116

Loans Receivable, Net - Trouble

Loans Receivable, Net - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020USD ($)Loan	Sep. 30, 2019USD ($)Loan	Sep. 30, 2020USD ($)Loan	Sep. 30, 2019USD ($)Loan
TDRs that occurred during the period
Number of loans | Loan	6	6	16	14
Pre-modification recorded balance	$ 7,482	$ 3,168	$ 14,945	$ 5,261
Post-modification recorded balance	$ 7,482	$ 3,168	$ 14,945	$ 5,247
TDRs that subsequently defaulted
Number of loans | Loan	0	0	0	1
Recorded balance	$ 0	$ 0	$ 0	$ 305
Residential Real Estate
TDRs that occurred during the period
Number of loans | Loan	0	0	1	1
Pre-modification recorded balance	$ 0	$ 0	$ 210	$ 117
Post-modification recorded balance	$ 0	$ 0	$ 210	$ 123
TDRs that subsequently defaulted
Number of loans | Loan	0	0	0	0
Recorded balance	$ 0	$ 0	$ 0	$ 0
Commercial Real Estate
TDRs that occurred during the period
Number of loans | Loan	5	4	10	5
Pre-modification recorded balance	$ 6,648	$ 3,067	$ 13,392	$ 4,102
Post-modification recorded balance	$ 6,648	$ 3,067	$ 13,392	$ 4,102
TDRs that subsequently defaulted
Number of loans | Loan	0	0	0	0
Recorded balance	$ 0	$ 0	$ 0	$ 0
Other Commercial
TDRs that occurred during the period
Number of loans | Loan	1	2	4	4
Pre-modification recorded balance	$ 834	$ 101	$ 1,304	$ 668
Post-modification recorded balance	$ 834	$ 101	$ 1,304	$ 668
TDRs that subsequently defaulted
Number of loans | Loan	0	0	0	0
Recorded balance	$ 0	$ 0	$ 0	$ 0
Home Equity
TDRs that occurred during the period
Number of loans | Loan	0	0	1	1
Pre-modification recorded balance	$ 0	$ 0	$ 39	$ 103
Post-modification recorded balance	$ 0	$ 0	$ 39	$ 103
TDRs that subsequently defaulted
Number of loans | Loan	0	0	0	0
Recorded balance	$ 0	$ 0	$ 0	$ 0
Other Consumer
TDRs that occurred during the period
Number of loans | Loan	0	0	0	3
Pre-modification recorded balance	$ 0	$ 0	$ 0	$ 271
Post-modification recorded balance	$ 0	$ 0	$ 0	$ 251
TDRs that subsequently defaulted
Number of loans | Loan	0	0	0	1
Recorded balance	$ 0	$ 0	$ 0	$ 305

Loans Receivable, Net - Credit

Loans Receivable, Net - Credit Quality Indicators for Commercial Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Credit Quality Indicators By Origination
Total	$ 11,618,731	$ 9,512,810
Commercial Real Estate
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	1,023,640
Term loans originated in 2019	1,149,893
Term loans originated in 2018	986,619
Term loans originated in 2017	786,907
Term loans originated in 2016	526,236
Term loans originated in 2015 and prior	1,581,948
Revolving loans	146,574
Total	6,201,817	5,579,307
Commercial Real Estate | Pass
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	1,018,529
Term loans originated in 2019	1,141,014
Term loans originated in 2018	947,230
Term loans originated in 2017	756,583
Term loans originated in 2016	507,694
Term loans originated in 2015 and prior	1,546,314
Revolving loans	143,265
Total	6,060,629
Commercial Real Estate | Special Mention
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	697
Term loans originated in 2019	335
Term loans originated in 2018	1,190
Term loans originated in 2017	0
Term loans originated in 2016	206
Term loans originated in 2015 and prior	0
Revolving loans	691
Total	3,119
Commercial Real Estate | Substandard
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	4,414
Term loans originated in 2019	8,544
Term loans originated in 2018	38,199
Term loans originated in 2017	30,324
Term loans originated in 2016	18,336
Term loans originated in 2015 and prior	35,286
Revolving loans	2,617
Total	137,720
Commercial Real Estate | Doubtful/ Loss
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	0
Term loans originated in 2019	0
Term loans originated in 2018	0
Term loans originated in 2017	0
Term loans originated in 2016	0
Term loans originated in 2015 and prior	348
Revolving loans	1
Total	349
Other Commercial
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	1,790,810
Term loans originated in 2019	335,126
Term loans originated in 2018	281,578
Term loans originated in 2017	287,150
Term loans originated in 2016	191,092
Term loans originated in 2015 and prior	239,070
Revolving loans	468,496
Total	3,593,322	$ 2,094,254
Other Commercial | Pass
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	1,784,359
Term loans originated in 2019	330,303
Term loans originated in 2018	275,011
Term loans originated in 2017	281,371
Term loans originated in 2016	188,849
Term loans originated in 2015 and prior	229,806
Revolving loans	453,105
Total	3,542,804
Other Commercial | Special Mention
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	606
Term loans originated in 2019	0
Term loans originated in 2018	0
Term loans originated in 2017	0
Term loans originated in 2016	0
Term loans originated in 2015 and prior	0
Revolving loans	0
Total	606
Other Commercial | Substandard
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	5,845
Term loans originated in 2019	4,820
Term loans originated in 2018	6,566
Term loans originated in 2017	5,323
Term loans originated in 2016	2,066
Term loans originated in 2015 and prior	8,100
Revolving loans	14,416
Total	47,136
Other Commercial | Doubtful/ Loss
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	0
Term loans originated in 2019	3
Term loans originated in 2018	1
Term loans originated in 2017	456
Term loans originated in 2016	177
Term loans originated in 2015 and prior	1,164
Revolving loans	975
Total	$ 2,776

Loans Receivable, Net - Credi_2

Loans Receivable, Net - Credit Quality Indicators for RRE and Consumer Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Credit Quality Indicators By Origination
Total	$ 11,618,731	$ 9,512,810
Residential Real Estate
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	141,655
Term loans originated in 2019	228,558
Term loans originated in 2018	129,077
Term loans originated in 2017	92,899
Term loans originated in 2016	65,216
Term loans originated in 2015 and prior	202,810
Revolving loans	2,399
Total	862,614	926,388
Residential Real Estate | Performing
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	141,655
Term loans originated in 2019	228,558
Term loans originated in 2018	128,043
Term loans originated in 2017	92,899
Term loans originated in 2016	64,382
Term loans originated in 2015 and prior	198,787
Revolving loans	2,399
Total	856,723
Residential Real Estate | 30-89 Days Past Due
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	0
Term loans originated in 2019	0
Term loans originated in 2018	791
Term loans originated in 2017	0
Term loans originated in 2016	0
Term loans originated in 2015 and prior	1,395
Revolving loans	0
Total	2,186
Residential Real Estate | Non-Accrual and 90 Days or More Past Due
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	0
Term loans originated in 2019	0
Term loans originated in 2018	243
Term loans originated in 2017	0
Term loans originated in 2016	834
Term loans originated in 2015 and prior	2,628
Revolving loans	0
Total	3,705
Home Equity
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	75
Term loans originated in 2019	1,028
Term loans originated in 2018	1,862
Term loans originated in 2017	1,745
Term loans originated in 2016	1,047
Term loans originated in 2015 and prior	17,337
Revolving loans	623,756
Total	646,850	617,201
Home Equity | Performing
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	75
Term loans originated in 2019	992
Term loans originated in 2018	1,861
Term loans originated in 2017	1,745
Term loans originated in 2016	1,047
Term loans originated in 2015 and prior	15,599
Revolving loans	619,423
Total	640,742
Home Equity | 30-89 Days Past Due
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	0
Term loans originated in 2019	0
Term loans originated in 2018	0
Term loans originated in 2017	0
Term loans originated in 2016	0
Term loans originated in 2015 and prior	1,059
Revolving loans	2,078
Total	3,137
Home Equity | Non-Accrual and 90 Days or More Past Due
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	0
Term loans originated in 2019	36
Term loans originated in 2018	1
Term loans originated in 2017	0
Term loans originated in 2016	0
Term loans originated in 2015 and prior	679
Revolving loans	2,255
Total	2,971
Other Consumer
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	106,569
Term loans originated in 2019	75,743
Term loans originated in 2018	49,929
Term loans originated in 2017	21,930
Term loans originated in 2016	12,424
Term loans originated in 2015 and prior	22,250
Revolving loans	25,283
Total	314,128	$ 295,660
Other Consumer | Performing
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	106,501
Term loans originated in 2019	75,340
Term loans originated in 2018	49,737
Term loans originated in 2017	21,829
Term loans originated in 2016	12,278
Term loans originated in 2015 and prior	21,106
Revolving loans	25,261
Total	312,052
Other Consumer | 30-89 Days Past Due
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	56
Term loans originated in 2019	354
Term loans originated in 2018	144
Term loans originated in 2017	62
Term loans originated in 2016	80
Term loans originated in 2015 and prior	932
Revolving loans	19
Total	1,647
Other Consumer | Non-Accrual and 90 Days or More Past Due
Credit Quality Indicators By Origination
Term loans originated in 2020 (year-to-date)	12
Term loans originated in 2019	49
Term loans originated in 2018	48
Term loans originated in 2017	39
Term loans originated in 2016	66
Term loans originated in 2015 and prior	212
Revolving loans	3
Total	$ 429

Loans Receivable, Net - ALLL an

Loans Receivable, Net - ALLL and Loans Receivable Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment			$ 94,504
Collectively evaluated for impairment			9,418,306
Total loans receivable	$ 11,618,731		9,512,810
Individually evaluated for impairment			95
Collectively evaluated for impairment			124,395
Total allowance for loan and lease losses	164,552	$ 162,509	124,490	$ 125,535	$ 129,054	$ 131,239
Residential Real Estate
Allowance for Loan and Lease Losses and Loans Receivable
Total loans receivable	862,614		926,388
Total allowance for loan and lease losses	9,805	9,986	10,111	10,237	10,695	10,631
Residential Real Estate | Residential real estate
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment			7,804
Collectively evaluated for impairment			918,584
Total loans receivable			926,388
Individually evaluated for impairment			0
Collectively evaluated for impairment			10,111
Total allowance for loan and lease losses			10,111
Commercial
Allowance for Loan and Lease Losses and Loans Receivable
Total loans receivable	3,593,322		2,094,254
Total allowance for loan and lease losses	48,753	48,838	36,129	36,858	36,259	38,160
Commercial | Commercial Real Estate
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment			58,609
Collectively evaluated for impairment			5,520,698
Total loans receivable			5,579,307
Individually evaluated for impairment			73
Collectively evaluated for impairment			69,423
Total allowance for loan and lease losses			69,496
Commercial | Other Commercial
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment			21,475
Collectively evaluated for impairment			2,072,779
Total loans receivable			2,094,254
Individually evaluated for impairment			10
Collectively evaluated for impairment			36,119
Total allowance for loan and lease losses			36,129
Consumer and Other
Allowance for Loan and Lease Losses and Loans Receivable
Total loans receivable	314,128		295,660
Total allowance for loan and lease losses	$ 4,167	$ 4,619	3,817	$ 3,741	$ 3,852	$ 4,189
Consumer and Other | Home Equity
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment			3,745
Collectively evaluated for impairment			613,456
Total loans receivable			617,201
Individually evaluated for impairment			0
Collectively evaluated for impairment			4,937
Total allowance for loan and lease losses			4,937
Consumer and Other | Other Consumer
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment			2,871
Collectively evaluated for impairment			292,789
Total loans receivable			295,660
Individually evaluated for impairment			12
Collectively evaluated for impairment			3,805
Total allowance for loan and lease losses			$ 3,817

Loans Receivable, Net - Impaire

Loans Receivable, Net - Impaired Loans (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Loans with a specific valuation allowance
Recorded balance	$ 5,388
Unpaid principal balance	5,388
Specific valuation allowance	95
Average balance	10,378
Loans without a specific valuation allowance
Recorded balance	89,116
Unpaid principal balance	99,355
Average balance	93,338
Recorded balance	94,504
Unpaid principal balance	104,743
Average balance	103,716
Residential Real Estate | Residential real estate
Loans with a specific valuation allowance
Recorded balance	0
Unpaid principal balance	0
Specific valuation allowance	0
Average balance	409
Loans without a specific valuation allowance
Recorded balance	7,804
Unpaid principal balance	9,220
Average balance	9,879
Recorded balance	7,804
Unpaid principal balance	9,220
Average balance	10,288
Commercial | Commercial Real Estate
Loans with a specific valuation allowance
Recorded balance	5,343
Unpaid principal balance	5,343
Specific valuation allowance	73
Average balance	6,341
Loans without a specific valuation allowance
Recorded balance	53,266
Unpaid principal balance	57,735
Average balance	59,107
Recorded balance	58,609
Unpaid principal balance	63,078
Average balance	65,448
Commercial | Other Commercial
Loans with a specific valuation allowance
Recorded balance	10
Unpaid principal balance	10
Specific valuation allowance	10
Average balance	3,490
Loans without a specific valuation allowance
Recorded balance	21,465
Unpaid principal balance	24,758
Average balance	18,079
Recorded balance	21,475
Unpaid principal balance	24,768
Average balance	21,569
Consumer and Other | Home Equity
Loans with a specific valuation allowance
Recorded balance	0
Unpaid principal balance	0
Specific valuation allowance	0
Average balance	24
Loans without a specific valuation allowance
Recorded balance	3,745
Unpaid principal balance	4,494
Average balance	3,486
Recorded balance	3,745
Unpaid principal balance	4,494
Average balance	3,510
Consumer and Other | Other Consumer
Loans with a specific valuation allowance
Recorded balance	35
Unpaid principal balance	35
Specific valuation allowance	12
Average balance	114
Loans without a specific valuation allowance
Recorded balance	2,836
Unpaid principal balance	3,148
Average balance	2,787
Recorded balance	2,871
Unpaid principal balance	3,183
Average balance	$ 2,901

Leases - Summary (Details)

Leases - Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Finance Leases
ROU assets	$ 5,999	$ 6,537
Accumulated depreciation	(212)	(917)
Net ROU assets	5,787	5,620
Lease liabilities	5,917	5,671
Operating Leases
Net ROU assets	47,329	41,453
Lease liabilities	$ 50,089	$ 43,904
Finance lease, weighted average remaining lease term	24 years	24 years
Operating lease, weighted average remaining lease term	17 years	19 years
Finance lease, weighted average discount rate	2.60%	3.00%
Operating lease, weighted average discount rate	3.50%	3.70%

Leases - Maturities of Lease Li

Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Finance Leases
Maturing within one year	$ 259
Maturing one year through two years	265
Maturing two years through three years	270
Maturing three years through four years	277
Maturing four years through five years	285
Thereafter	6,808
Total lease payments	8,164
Present value of lease payments
Short-term	214
Long-term	5,703
Total present value of lease payments	5,917	$ 5,671
Finance lease, difference between lease payments and present value of lease payments	2,247
Operating Leases
Maturing within one year	4,608
Maturing one year through two years	4,431
Maturing two years through three years	3,961
Maturing three years through four years	3,914
Maturing four years through five years	3,869
Thereafter	48,432
Total lease payments	69,215
Present value of lease payments
Short-term	2,973
Long-term	47,116
Total present value of lease payments	50,089	$ 43,904
Operating lease, difference between lease payments and present value of lease payments	$ 19,126

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Finance lease cost
Amortization of ROU assets	$ 59	$ 16	$ 174	$ 48
Interest on lease liabilities	40	2	121	6
Operating lease cost	1,254	1,057	3,553	2,967
Short-term lease cost	88	102	266	330
Variable lease cost	264	236	977	657
Sublease income	(2)	(2)	(5)	(5)
Total lease expense	$ 1,703	$ 1,411	$ 5,086	$ 4,003

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Finance lease, operating cash flows	$ 40	$ 2	$ 121	$ 6
Finance lease, financing cash flows	23	21	67	63
Operating lease, operating cash flows	$ 706	$ 565	$ 1,994	$ 1,541

Goodwill - Changes in the Carry

Goodwill - Changes in the Carrying Value of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Goodwill Roll Forward
Net carrying value at beginning of period	$ 513,355	$ 330,887	$ 456,418	$ 289,586
Acquisitions and adjustments	658	125,535	57,595	166,836
Net carrying value at end of period	$ 514,013	$ 456,422	$ 514,013	$ 456,422

Goodwill (Details)

Goodwill (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Accumulated impairment charge	$ 40,159	$ 40,159

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Variable Interest Entities
Impairment losses	$ 0	$ 0
Other assets
Variable Interest Entities
Carrying value of equity investments in LIHTCs	$ 43,730,000		$ 41,521,000
CDE
Variable Interest Entities
Tax credit period	7 years
LIHTC
Variable Interest Entities
Tax credit period	10 years
Tax credit compliance period	15 years

Variable Interest Entities - VI

Variable Interest Entities - VIE Carrying Amounts Included in Financial Statements (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets
Loans receivable	$ 11,618,731	$ 9,512,810
Accrued interest receivable	91,393	56,047
Other assets	105,741	81,371
Total assets	17,926,067	13,683,999
Liabilities
Other borrowed funds	32,967	28,820
Accrued interest payable	3,951	4,686
Other liabilities	204,041	164,954
Total liabilities	15,670,978	11,723,266
Consolidated VIEs
Assets
Loans receivable	90,183	84,390
Accrued interest receivable	457	63
Other assets	55,863	54,692
Total assets	146,503	139,145
Liabilities
Other borrowed funds	27,050	23,149
Accrued interest payable	167	36
Other liabilities	47	123
Total liabilities	$ 27,264	$ 23,308

Variable Interest Entities - Fu

Variable Interest Entities - Future Unfunded Contingent Commitments (Details) - Qualified Affordable Housing Project Investments $ in Thousands	Sep. 30, 2020USD ($)
Other Commitments
Unfunded contingent commitments expected to be fulfilled in 2020	$ 7,608
Unfunded contingent commitments expected to be fulfilled in 2021	14,883
Unfunded contingent commitments expected to be fulfilled in 2022	14,165
Unfunded contingent commitments expected to be fulfilled in 2023	5,277
Unfunded contingent commitments expected to be fulfilled in 2024	427
Unfunded contingent commitments expected to be fulfilled thereafter	812
Unfunded contingent commitments	$ 43,172

Variable Interest Entities - Am

Variable Interest Entities - Amortization Expense and Tax Credits and Other Tax Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Investments in Qualified Affordable Housing Projects
Amortization expense	$ 1,936	$ 1,609	$ 5,766	$ 4,504
Tax credits and other tax benefits recognized	$ 2,608	$ 2,202	$ 7,771	$ 6,169

Securities Sold Under Agreeme_3

Securities Sold Under Agreements to Repurchase - Carrying Value of Repurchase Agreements (Details) - Overnight and Continuous - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Securities Sold Under Agreements to Repurchase
Repurchase agreements	$ 965,668	$ 569,824
State and local governments
Securities Sold Under Agreements to Repurchase
Repurchase agreements	742,753	0
Corporate bonds
Securities Sold Under Agreements to Repurchase
Repurchase agreements	222,915	0
Residential mortgage-backed securities
Securities Sold Under Agreements to Repurchase
Repurchase agreements	0	312,015
Commercial mortgage-backed securities
Securities Sold Under Agreements to Repurchase
Repurchase agreements	$ 0	$ 257,809

Securities Sold Under Agreeme_4

Securities Sold Under Agreements to Repurchase (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Securities Sold Under Agreements to Repurchase
Securities pledged for repurchase agreements	$ 1,096,781	$ 711,210

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities (Details) - USD ($) $ in Thousands	1 Months Ended		9 Months Ended
	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Interest rate lock commitment
Derivative financial instruments
Off-balance sheet commitments			$ 408,859		$ 84,803
Interest rate lock commitment | Other Assets
Derivative financial instruments
Fair value of derivative			14,967		1,852
Interest rate caps
Derivative financial instruments
Forecasted notional amount	$ 130,500
Derivative, term of contracts	5 years
Interest expense recorded			84
Interest rate caps | Other Assets
Derivative financial instruments
Fair value of derivative			183
Interest rate caps | Minimum
Derivative financial instruments
Derivative, cap interest rate	1.50%
Interest rate caps | Maximum
Derivative financial instruments
Derivative, cap interest rate	2.00%
TBA hedge
Derivative financial instruments
Forecasted notional amount		$ 260,000		$ 260,000
Interest expense recorded			0	$ 5,532
Loss on termination		$ 9,997
Forward commitments to sell TBA securities
Derivative financial instruments
Forecasted notional amount			353,750		82,000
Forward commitments to sell TBA securities | Other Liabilities
Derivative financial instruments
Fair value of derivative asset, gross liability			$ 1,344		$ 236

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Interest Rate Swap Gains or Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Pre-Tax Gains or Losses
Amount of loss recognized in OCI	$ (76)	$ (1,393)	$ (532)	$ (7,047)
Interest Rate Contracts
Pre-Tax Gains or Losses
Amount of loss reclassified from OCI to net income	0	(10,315)	0	(10,816)
Interest Rate Contracts | Other Comprehensive Income
Pre-Tax Gains or Losses
Amount of loss recognized in OCI	$ (76)	$ (1,393)	$ (532)	$ (7,047)

Other Expenses (Details)

Other Expenses (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Expenses
Consulting and outside services		$ 4,050	$ 1,938	$ 8,604	$ 5,715
Mergers and acquisition expenses		792	2,058	7,311	4,103
Loan expenses	[1]	4,060	924	5,867	2,726
Telephone		1,314	1,216	3,865	3,601
Debit card expenses		1,414	1,699	3,704	5,003
VIE amortization and other expenses		1,510	1,427	3,396	2,878
Business development		1,139	1,176	3,110	3,189
Printing and supplies		877	735	2,704	2,246
Postage		851	831	2,479	2,487
Employee expenses		560	1,245	2,247	3,646
Accounting and audit fees		455	365	1,453	1,290
Checking and operating expenses		355	361	1,263	1,353
Legal fees		206	338	1,025	926
ATM expenses		245	299	373	1,312
Other		958	991	2,828	2,679
Total other expenses		$ 18,786	$ 15,603	$ 50,229	$ 43,154
[1]	Loan expenses include credit loss expense for off-balance sheet credit exposures.

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
AOCI Attributable to Parent, Net of Tax
Other comprehensive income (loss) before reclassifications			$ 91,630	$ 60,023
Reclassification adjustments for (gains) losses included in net income (loss)			(758)	(2,501)
Total other comprehensive income, net of tax	$ 1,189	$ 4,647	90,872	57,522
(Losses) Gains on Available-For-Sale Debt Securities
AOCI Attributable to Parent, Net of Tax
Balance, beginning			40,226	(6,613)
Other comprehensive income (loss) before reclassifications			92,027	65,284
Reclassification adjustments for (gains) losses included in net income (loss)			(758)	(10,576)
Total other comprehensive income, net of tax			91,269	54,708
Balance, end	131,495	48,095	131,495	48,095
Losses on Derivatives Used for Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax
Balance, beginning			0	(2,814)
Other comprehensive income (loss) before reclassifications			(397)	(5,261)
Reclassification adjustments for (gains) losses included in net income (loss)			0	8,075
Total other comprehensive income, net of tax			(397)	2,814
Balance, end	(397)	0	(397)	0
AOCI Including Portion Attributable to Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax
Balance, beginning			40,226	(9,427)
Balance, end	$ 131,098	$ 48,095	$ 131,098	$ 48,095

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Basic and Diluted Earnings Per Share
Net income available to common stockholders, basic and diluted		$ 77,757	$ 51,610	$ 184,540	$ 153,134
Average outstanding shares - basic (in shares)		95,411,656	90,294,811	94,704,198	86,911,402
Add: dilutive restricted stock units and stock options (in shares)		30,920	154,384	43,696	170,776
Average outstanding shares - diluted (in shares)		95,442,576	90,449,195	94,747,894	87,082,178
Basic earnings per share (in dollars per share)		$ 0.81	$ 0.57	$ 1.95	$ 1.76
Diluted earnings per share (in dollars per share)		$ 0.81	$ 0.57	$ 1.95	$ 1.76
Restricted stock units and stock options excluded from the diluted average outstanding share calculation (in shares)	[1]	93,253	4,037	78,605	1,360
[1]	Anti-dilution occurs when the unrecognized compensation cost per share of a restricted stock unit or the exercise price of a stock option exceeds the market price of the Company’s stock.

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair value measurement transfers from one level to another	$ 0	$ 0
Loans Held For Sale | Gain on sale of loans
Fair Value, Option, Quantitative Disclosures
Changes in fair value, gains	$ 3,435,000	$ 993,000

Fair Value of Assets and Liab_3

Fair Value of Assets and Liabilities - Fair Value Measurements on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financial Assets
Debt securities, available-for-sale	$ 4,125,548	$ 2,575,252
Recurring Measurements
Financial Assets
Loans held for sale, at fair value	147,937	69,194
Total assets measured at fair value on a recurring basis	4,288,634	2,646,298
Total financial liabilities	1,344	236
Interest rate caps | Recurring Measurements
Financial Assets
Interest rate caps	182
Interest rate lock commitment | Recurring Measurements
Financial Assets
Interest rate caps	14,967	1,852
TBA hedge
Financial Assets
TBA hedge
TBA hedge | Recurring Measurements
Financial Assets
TBA hedge	1,344	236
U.S. government and federal agency | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	40,140	20,044
U.S. government sponsored enterprises | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	9,825	43,677
State and local governments | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	1,275,376	702,398
Corporate bonds | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	361,024	157,602
Residential mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	1,275,858	738,724
Commercial mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	1,163,325	912,807
Level 1 | Recurring Measurements
Financial Assets
Loans held for sale, at fair value	0	0
Total assets measured at fair value on a recurring basis	0	0
Total financial liabilities	0	0
Level 1 | Interest rate caps | Recurring Measurements
Financial Assets
Interest rate caps	0
Level 1 | Interest rate lock commitment | Recurring Measurements
Financial Assets
Interest rate caps	0	0
Level 1 | TBA hedge | Recurring Measurements
Financial Assets
TBA hedge	0	0
Level 1 | U.S. government and federal agency | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | U.S. government sponsored enterprises | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | State and local governments | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | Corporate bonds | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | Residential mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | Commercial mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 2 | Recurring Measurements
Financial Assets
Loans held for sale, at fair value	147,937	69,194
Total assets measured at fair value on a recurring basis	4,288,634	2,646,298
Total financial liabilities	1,344	236
Level 2 | Interest rate caps | Recurring Measurements
Financial Assets
Interest rate caps	182
Level 2 | Interest rate lock commitment | Recurring Measurements
Financial Assets
Interest rate caps	14,967	1,852
Level 2 | TBA hedge | Recurring Measurements
Financial Assets
TBA hedge	1,344	236
Level 2 | U.S. government and federal agency | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	40,140	20,044
Level 2 | U.S. government sponsored enterprises | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	9,825	43,677
Level 2 | State and local governments | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	1,275,376	702,398
Level 2 | Corporate bonds | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	361,024	157,602
Level 2 | Residential mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	1,275,858	738,724
Level 2 | Commercial mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	1,163,325	912,807
Level 3 | Recurring Measurements
Financial Assets
Loans held for sale, at fair value	0	0
Total assets measured at fair value on a recurring basis	0	0
Total financial liabilities	0	0
Level 3 | Interest rate caps | Recurring Measurements
Financial Assets
Interest rate caps	0
Level 3 | Interest rate lock commitment | Recurring Measurements
Financial Assets
Interest rate caps	0	0
Level 3 | TBA hedge | Recurring Measurements
Financial Assets
TBA hedge	0	0
Level 3 | U.S. government and federal agency | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | U.S. government sponsored enterprises | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | State and local governments | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | Corporate bonds | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | Residential mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | Commercial mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	$ 0	$ 0

Fair Value of Assets and Liab_4

Fair Value of Assets and Liabilities - Fair Value Measurements on a Non-Recurring Basis (Details) - Non-Recurring Measurements - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned	$ 297	$ 1,983
Collateral-dependent loans, net of ACL	2,284	23
Total assets measured at fair value on a recurring basis	2,581	2,006
Level 1
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned	0	0
Collateral-dependent loans, net of ACL	0	0
Total assets measured at fair value on a recurring basis	0	0
Level 2
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned	0	0
Collateral-dependent loans, net of ACL	0	0
Total assets measured at fair value on a recurring basis	0	0
Level 3
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned	297	1,983
Collateral-dependent loans, net of ACL	2,284	23
Total assets measured at fair value on a recurring basis	$ 2,581	$ 2,006

Fair Value of Assets and Liab_5

Fair Value of Assets and Liabilities - Quantitative Information about Level 3 Fair Value Measurements (Details) - Non-Recurring Measurements $ in Thousands		Sep. 30, 2020USD ($)Input	Dec. 31, 2019USD ($)Input
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned | $		$ 297	$ 1,983
Collateral-dependent loans, net of ACL | $		2,284	23
Level 3
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned | $		297	1,983
Collateral-dependent loans, net of ACL | $		2,284	23
Level 3 | Sales Comparison Approach
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned | $		297	1,983
Level 3 | Sales Comparison Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent loans, net of ACL | $		45
Level 3 | Sales Comparison Approach | Adjustments to comparables
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent loans, net of ACL | $			14
Level 3 | Cost Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent loans, net of ACL | $		943	$ 9
Level 3 | Combined Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent loans, net of ACL | $		$ 1,296
Level 3 | Minimum | Sales Comparison Approach
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned	[1]	0.080
Level 3 | Minimum | Sales Comparison Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned	[1]		0.060
Collateral-dependent impaired loans, net of ALLL	[1]	0.100
Level 3 | Minimum | Sales Comparison Approach | Adjustments to comparables
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned			0
Collateral-dependent impaired loans, net of ALLL			0
Level 3 | Minimum | Cost Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL	[1]	0.100	0.100
Level 3 | Minimum | Combined Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL	[1]	0.100
Level 3 | Maximum | Sales Comparison Approach
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned	[1]	0.100
Level 3 | Maximum | Sales Comparison Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned	[1]		0.100
Collateral-dependent impaired loans, net of ALLL	[1]	0.100
Level 3 | Maximum | Sales Comparison Approach | Adjustments to comparables
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned			0.111
Collateral-dependent impaired loans, net of ALLL			0
Level 3 | Maximum | Cost Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL	[1]	0.100	0.100
Level 3 | Maximum | Combined Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL	[1]	0.100
Level 3 | Weighted Average Range | Sales Comparison Approach
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned	[1]	0.090
Level 3 | Weighted Average Range | Sales Comparison Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned	[1]		0.073
Collateral-dependent impaired loans, net of ALLL	[1]	0.100
Level 3 | Weighted Average Range | Sales Comparison Approach | Adjustments to comparables
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned			0.045
Collateral-dependent impaired loans, net of ALLL			0
Level 3 | Weighted Average Range | Cost Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL	[1]	0.100	0.100
Level 3 | Weighted Average Range | Combined Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL	[1]	0.100
[1]	The range for selling cost inputs represents reductions to the fair value of the assets.

Fair Value of Assets and Liab_6

Fair Value of Assets and Liabilities - Carrying Amount and Estimated Fair Value of Financial Instruments Not Carried at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Carrying Amount
Financial assets
Cash and cash equivalents	$ 769,879	$ 330,961
Debt securities, held-to-maturity	193,509	224,611
Loans receivable, net of ACL	11,454,179	9,388,320
Total financial assets	12,417,567	9,943,892
Financial liabilities
Term deposits	1,098,988	1,011,798
FHLB advances	7,318	38,611
Repurchase agreements and other borrowed funds	998,635	598,644
Subordinated debentures	139,918	139,914
Total financial liabilities	2,244,859	1,788,967
Estimated Fair Value | Level 1
Financial assets
Cash and cash equivalents	769,879	330,961
Debt securities, held-to-maturity	0	0
Loans receivable, net of ACL	0	0
Total financial assets	769,879	330,961
Financial liabilities
Term deposits	0	0
FHLB advances	0	0
Repurchase agreements and other borrowed funds	0	0
Subordinated debentures	0	0
Total financial liabilities	0	0
Estimated Fair Value | Level 2
Financial assets
Cash and cash equivalents	0	0
Debt securities, held-to-maturity	206,577	234,396
Loans receivable, net of ACL	0	0
Total financial assets	206,577	234,396
Financial liabilities
Term deposits	1,104,273	1,017,505
FHLB advances	7,537	38,787
Repurchase agreements and other borrowed funds	998,635	598,644
Subordinated debentures	119,318	124,094
Total financial liabilities	2,229,763	1,779,030
Estimated Fair Value | Level 3
Financial assets
Cash and cash equivalents	0	0
Debt securities, held-to-maturity	0	0
Loans receivable, net of ACL	11,619,887	9,438,121
Total financial assets	11,619,887	9,438,121
Financial liabilities
Term deposits	0	0
FHLB advances	0	0
Repurchase agreements and other borrowed funds	0	0
Subordinated debentures	0	0
Total financial liabilities	$ 0	$ 0

Mergers and Acquisitions (Detai

Mergers and Acquisitions (Details) - USD ($) $ in Thousands	Feb. 29, 2020	Sep. 30, 2020	Sep. 30, 2020
Business Acquisition
PCD loans acquired			$ 3,401
ACL on PCD loans acquired			$ 49
State Bank of Arizona
Business Acquisition
Percentage of outstanding common stock acquired	100.00%
Fair value of consideration transferred	$ 125,854
Number of shares issued for acquisition (in shares)	3,007,044
Cash consideration	$ 13,721
Loans receivable	451,702
Loans receivable acquired, gross principal and contractual interest due	452,510
PCD loans acquired	3,401
ACL on PCD loans acquired	49
Third-party acquisition related costs	$ 4,167
Net interest income and non-interest income		$ 21,144
Net income		$ 3,921

Mergers and Acquisitions - Cons

Mergers and Acquisitions - Consideration Transferred, Identifiable Net Assets Acquired and Goodwill Recognized (Details) - USD ($) $ in Thousands		Feb. 29, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Liabilities assumed
Goodwill recognized			$ 658	$ 125,535	$ 57,595	$ 166,836
State Bank of Arizona
Fair value of consideration transferred
Fair value of Company shares issued		$ 112,133
Cash consideration		13,721
Total fair value of consideration transferred		125,854
Identifiable assets acquired
Cash and cash equivalents		57,434
Debt securities		142,174
Loans receivable, net of ACL		451,653
Core deposit intangible	[1]	2,593
Accrued income and other assets		33,971
Total identifiable assets acquired		687,825
Liabilities assumed
Deposits		603,289
Borrowings		10,904
Accrued expenses and other liabilities		5,373
Total liabilities assumed		619,566
Total identifiable net assets		68,259
Goodwill recognized		$ 57,595
Core deposit intangible, weighted average useful life		10 years
[1]	The core deposit intangible for the acquisition was determined to have an estimated life of 10 years.

Mergers and Acquisitions - Pro

Mergers and Acquisitions - Pro Forma Summary (Details) - 2020 Acquisition - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Pro Forma Information
Net interest income and non-interest income	$ 205,070	$ 182,185	$ 567,406	$ 491,830
Net income	$ 77,757	$ 54,000	$ 183,429	$ 159,601