Customers Bancorp (CUBI) 10-Q 9 Nov 23 2023 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2023	Nov. 03, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity File Number	001-35542
Entity Registrant Name	Customers Bancorp, Inc.
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	27-2290659
Entity Address, Address Line One	701 Reading Avenue
Entity Address, City or Town	West Reading
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19611
City Area Code	610
Local Phone Number	933-2000
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		31,413,946
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001488813
Current Fiscal Year End Date	--12-31
Voting Common Stock, par value $1.00 per share
Entity Information [Line Items]
Title of 12(b) Security	Voting Common Stock, par value $1.00 per share
Trading Symbol	CUBI
Security Exchange Name	NYSE
Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series E, par value $1.00 per share
Entity Information [Line Items]
Title of 12(b) Security	Fixed-to-Floating Rate Non-Cumulative PerpetualPreferred Stock, Series E, par value $1.00 per share
Trading Symbol	CUBI/PE
Security Exchange Name	NYSE
Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series F, par value $1.00 per share
Entity Information [Line Items]
Title of 12(b) Security	Fixed-to-Floating Rate Non-Cumulative PerpetualPreferred Stock, Series F, par value $1.00 per share
Trading Symbol	CUBI/PF
Security Exchange Name	NYSE
5.375% Subordinated Notes due 2034
Entity Information [Line Items]
Title of 12(b) Security	5.375% Subordinated Notes due 2034
Trading Symbol	CUBB
Security Exchange Name	NYSE

Consolidated Balance Sheet _ Un

Consolidated Balance Sheet — Unaudited - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
ASSETS
Cash and due from banks	$ 68,288	$ 58,025
Interest earning deposits	3,351,686	397,781
Cash and cash equivalents	3,419,974	455,806
Investment securities, at fair value (includes allowance for credit losses of $3,849 and $578, respectively)	2,773,207	2,987,500
Investment securities held to maturity	1,178,370	840,259
Loans held for sale (includes $25,520 and $322, respectively, at fair value)	150,368	328,312
Loans receivable, mortgage warehouse, at fair value	962,566	1,323,312
Loans receivable, PPP	137,063	998,153
Loans and leases receivable	12,463,485	13,144,894
Allowance for credit losses on loans and leases	(139,213)	(130,924)
Total loans and leases receivable, net of allowance for credit losses on loans and leases	13,423,901	15,335,435
FHLB, Federal Reserve Bank, and other restricted stock	126,098	74,196
Accrued interest receivable	123,984	123,374
Bank premises and equipment, net	7,789	9,025
Bank-owned life insurance	291,670	338,441
Goodwill and other intangibles	3,629	3,629
Other assets	358,162	400,135
Total assets	21,857,152	20,896,112
Deposits:
Demand, non-interest bearing	4,758,682	1,885,045
Interest bearing	13,436,682	16,271,908
Total deposits	18,195,364	18,156,953
FHLB advances	1,529,839	800,000
Other borrowings	123,775	123,580
Subordinated debt	182,161	181,952
Accrued interest payable and other liabilities	264,406	230,666
Total liabilities	20,295,545	19,493,151
Commitments and contingencies (NOTE 15)
Shareholders’ equity:
Preferred stock, par value $1.00 per share; liquidation preference $25.00 per share; 100,000,000 shares authorized, 5,700,000 shares issued and outstanding as of September 30, 2023 and December 31, 2022	137,794	137,794
Common stock, par value $1.00 per share; 200,000,000 shares authorized; 35,329,690 and 35,012,250 shares issued as of September 30, 2023 and December 31, 2022; 31,311,254 and 32,373,697 shares outstanding as of September 30, 2023 and December 31, 2022	35,330	35,012
Additional paid in capital	559,346	551,721
Retained earnings	1,101,359	924,134
Accumulated other comprehensive income (loss), net	(149,812)	(163,096)
Treasury stock, at cost (4,018,436 and 2,638,553 shares as of September 30, 2023 and December 31, 2022)	(122,410)	(82,604)
Total shareholders’ equity	1,561,607	1,402,961
Total liabilities and shareholders’ equity	$ 21,857,152	$ 20,896,112

Consolidated Balance Sheet _ _2

Consolidated Balance Sheet — Unaudited (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Allowance for credit losses, available for sale securities	$ 3,849	$ 578
Loans held for sale at fair value	$ 25,520	$ 322
Preferred stock, par value (usd per share)	$ 1	$ 1
Preferred stock, liquidation preference (usd per share)	$ 25	$ 25
Preferred stock, shares authorized (shares)	100,000,000	100,000,000
Preferred stock, shares issued (shares)	5,700,000	5,700,000
Preferred stock, shares outstanding (shares)	5,700,000	5,700,000
Common stock, par value (usd per share)	$ 1	$ 1
Common stock, shares authorized (shares)	200,000,000	200,000,000
Common stock, shares issued (shares)	35,329,690	35,012,250
Common stock, shares outstanding (shares)	31,311,254	32,373,697
Treasury stock (shares)	4,018,436	2,638,553

Consolidated Statements of Inco

Consolidated Statements of Income (Loss) — Unaudited - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest income:
Loans and leases	$ 271,107	$ 200,438	$ 757,064	$ 526,478
Investment securities	54,243	30,546	149,585	76,283
Interest earning deposits	43,800	2,949	81,819	4,198
Loans held for sale	4,664	19	27,514	95
Other	2,526	1,964	5,463	8,672
Total interest income	376,340	235,916	1,021,445	615,726
Interest expense:
Deposits	145,825	65,380	426,130	101,873
FHLB advances	26,485	4,684	61,140	7,000
FRB advances	0	0	6,286	0
Subordinated debt	2,689	2,689	8,067	8,067
Other borrowings	1,568	4,131	4,879	10,203
Total interest expense	176,567	76,884	506,502	127,143
Net interest income	199,773	159,032	514,943	488,583
Provision (benefit) for credit losses	17,856	(7,994)	61,088	31,850
Net interest income after provision (benefit) for credit losses	181,917	167,026	453,855	456,733
Non-interest income:
Commercial lease income	8,901	7,097	27,144	19,584
Loan fees	6,029	3,008	14,290	8,171
Bank-owned life insurance	1,973	3,449	9,617	13,722
Mortgage warehouse transactional fees	1,018	1,545	3,468	5,443
Gain (loss) on sale of SBA and other loans	(348)	106	(1,109)	3,155
Loss on sale of capital call lines of credit	0	0	(5,037)	0
Loss on sale of consumer installment loans	0	(23,465)	0	(23,465)
Net gain (loss) on sale of investment securities	(429)	(2,135)	(429)	(6,227)
Other	631	1,378	3,949	4,544
Total non-interest income	17,775	(9,017)	51,893	24,927
Non-interest expense:
Salaries and employee benefits	33,845	31,230	99,310	83,171
Technology, communication and bank operations	15,667	19,588	48,663	66,394
Commercial lease depreciation	7,338	5,966	22,541	16,460
Professional services	8,569	6,269	25,357	20,640
Loan servicing	3,858	3,851	13,296	10,563
Occupancy	2,471	2,605	7,750	9,934
FDIC assessments, non-income taxes and regulatory fees	8,551	2,528	21,059	6,530
Advertising and promotion	650	762	2,245	1,430
Legal settlement expense	4,096	0	4,096	0
Other	4,421	3,399	14,579	11,088
Total non-interest expense	89,466	76,198	258,896	226,210
Income before income tax expense	110,226	81,811	246,852	255,450
Income tax expense	23,470	17,899	58,801	56,127
Net income	86,756	63,912	188,051	199,323
Preferred stock dividends	3,803	2,548	10,826	6,544
Net income available to common shareholders	82,953	61,364	177,225	192,779
Net income available to common shareholders	$ 82,953	$ 61,364	$ 177,225	$ 192,779
Basic earnings per common share (usd per share)	$ 2.65	$ 1.89	$ 5.63	$ 5.89
Diluted earnings per common share (usd per share)	$ 2.58	$ 1.85	$ 5.53	$ 5.72

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) — Unaudited - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 86,756	$ 63,912	$ 188,051	$ 199,323
Unrealized gains (losses) on available for sale debt securities:
Unrealized gains (losses) arising during the period	23,666	(46,450)	14,535	(213,532)
Income tax effect	(6,011)	12,077	(3,692)	55,518
Reclassification adjustments for (gains) losses included in net income	(429)	4,227	(429)	9,281
Income tax effect	109	(1,099)	109	(2,413)
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity	1,379	0	3,700	0
Income tax effect	(350)	0	(939)	0
Net unrealized gains (losses) on available for sale debt securities	18,364	(31,245)	13,284	(151,146)
Other comprehensive income (loss), net of income tax effect	18,364	(31,245)	13,284	(151,146)
Comprehensive income (loss)	$ 105,120	$ 32,667	$ 201,335	$ 48,177

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity — Unaudited - USD ($) $ in Thousands		Total	Preferred Stock	Common Stock	Additional Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance, preferred stock (shares) at Dec. 31, 2021			5,700,000
Beginning balance at Dec. 31, 2021		$ 1,366,217	$ 137,794	$ 34,722	$ 542,391	$ 705,732	$ (4,980)	$ (49,442)
Beginning balance, common stock (shares) at Dec. 31, 2021				32,913,267
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		199,323				199,323
Other comprehensive income (loss)		(151,146)					(151,146)
Preferred stock dividends	[1]	(6,544)				(6,544)
Share-based compensation expense		10,657			10,657
Issuance of common stock under share-based compensation arrangements (shares)				226,380
Issuance of common stock under share-based compensation arrangements		$ (3,756)		$ 226	(3,982)
Repurchase of common shares (in shares)		(664,145)		(664,145)
Repurchase of common shares		$ (27,820)						(27,820)
Ending balance, preferred stock (shares) at Sep. 30, 2022			5,700,000
Ending balance at Sep. 30, 2022		1,386,931	$ 137,794	$ 34,948	549,066	898,511	(156,126)	(77,262)
Ending balance, common stock (shares) at Sep. 30, 2022				32,475,502
Beginning balance, preferred stock (shares) at Jun. 30, 2022			5,700,000
Beginning balance at Jun. 30, 2022		1,353,390	$ 137,794	$ 34,922	545,670	837,147	(124,881)	(77,262)
Beginning balance, common stock (shares) at Jun. 30, 2022				32,449,486
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		63,912				63,912
Other comprehensive income (loss)		(31,245)					(31,245)
Preferred stock dividends	[2]	(2,548)				(2,548)
Share-based compensation expense		3,336			3,336
Issuance of common stock under share-based compensation arrangements (shares)				26,016
Issuance of common stock under share-based compensation arrangements		$ 86		$ 26	60
Repurchase of common shares (in shares)		0
Ending balance, preferred stock (shares) at Sep. 30, 2022			5,700,000
Ending balance at Sep. 30, 2022		$ 1,386,931	$ 137,794	$ 34,948	549,066	898,511	(156,126)	(77,262)
Ending balance, common stock (shares) at Sep. 30, 2022				32,475,502
Beginning balance, preferred stock (shares) at Dec. 31, 2022		5,700,000	5,700,000
Beginning balance at Dec. 31, 2022		$ 1,402,961	$ 137,794	$ 35,012	551,721	924,134	(163,096)	(82,604)
Beginning balance, common stock (shares) at Dec. 31, 2022		32,373,697		32,373,697
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		$ 188,051				188,051
Other comprehensive income (loss)		13,284					13,284
Preferred stock dividends	[1]	(10,826)				(10,826)
Share-based compensation expense		9,979			9,979
Issuance of common stock under share-based compensation arrangements (shares)				317,440
Issuance of common stock under share-based compensation arrangements		$ (2,036)		$ 318	(2,354)
Repurchase of common shares (in shares)		(1,379,883)		(1,379,883)
Repurchase of common shares		$ (39,806)						(39,806)
Ending balance, preferred stock (shares) at Sep. 30, 2023		5,700,000	5,700,000
Ending balance at Sep. 30, 2023		$ 1,561,607	$ 137,794	$ 35,330	559,346	1,101,359	(149,812)	(122,410)
Ending balance, common stock (shares) at Sep. 30, 2023		31,311,254		31,311,254
Beginning balance, preferred stock (shares) at Jun. 30, 2023			5,700,000
Beginning balance at Jun. 30, 2023		$ 1,456,652	$ 137,794	$ 35,301	555,737	1,018,406	(168,176)	(122,410)
Beginning balance, common stock (shares) at Jun. 30, 2023				31,282,318
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		86,756				86,756
Other comprehensive income (loss)		18,364					18,364
Preferred stock dividends	[2]	(3,803)				(3,803)
Share-based compensation expense		3,510			3,510
Issuance of common stock under share-based compensation arrangements (shares)				28,936
Issuance of common stock under share-based compensation arrangements		$ 128		$ 29	99
Repurchase of common shares (in shares)		0
Ending balance, preferred stock (shares) at Sep. 30, 2023		5,700,000	5,700,000
Ending balance at Sep. 30, 2023		$ 1,561,607	$ 137,794	$ 35,330	$ 559,346	$ 1,101,359	$ (149,812)	$ (122,410)
Ending balance, common stock (shares) at Sep. 30, 2023		31,311,254		31,311,254
[1]Dividends per share of $1.941704 and $1.869779 were declared on Series E and F preferred stock, respectively, for the nine months ended September 30, 2023. Dividends per share of $1.160316 and $1.088391 were declared on Series E and F preferred stock, respectively, for the nine months ended September 30, 2022.[2]Dividends per share of $0.6831 and $0.658950 were declared on Series E and F preferred stock, respectively, for the three months ended September 30, 2023. Dividends per share of $0.445233 and $0.421083 were declared on Series E and F preferred stock, respectively, for the three months ended September 30, 2022.

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity — Unaudited (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Series E Preferred Stock
Preferred stock, dividends, per share, cash paid (usd per share)	$ 0.6831	$ 0.445233	$ 1.941704	$ 1.160316
Series F Preferred Stock
Preferred stock, dividends, per share, cash paid (usd per share)	$ 0.658950	$ 0.421083	$ 1.869779	$ 1.088391

Consolidated Statements of Cash

Consolidated Statements of Cash Flows — Unaudited - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash Flows from Operating Activities
Net income from continuing operations	$ 188,051	$ 199,323
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for credit losses	61,088	31,850
Depreciation and amortization	24,226	20,027
Share-based compensation expense	10,048	10,702
Deferred taxes	21,999	(436)
Net amortization (accretion) of investment securities premiums and discounts	(8,859)	2,139
Unrealized (gain) loss on investment securities	197	738
Net (gain) loss on sale of investment securities	429	6,227
Impairment loss on fixed assets and leases	124	1,362
Unrealized (gain) loss on derivatives	(344)	(2,348)
Settlement of terminated fair value hedge derivatives	4,630	0
(Gain) loss on sale of leased assets under lessor operating leases	439	350
(Gain) loss on sale of loans	869	(4,149)
Loss on sale of capital call lines of credit	5,037	0
Loss on sale of consumer installment loans	0	23,465
Origination and purchases of loans held for sale	(470,318)	(28,077)
Proceeds from the sales and repayments of loans held for sale	454,867	44,209
Amortization (accretion) of loan net deferred fees, discounts and premiums	(74,016)	(49,601)
Earnings on investment in bank-owned life insurance	(9,617)	(13,722)
(Increase) decrease in accrued interest receivable and other assets	917	16,883
Increase (decrease) in accrued interest payable and other liabilities	33,339	16,080
Net Cash Provided By (Used In) Operating Activities	243,106	275,022
Cash Flows from Investing Activities
Proceeds from maturities, calls and principal repayments of investment securities available for sale	228,503	408,046
Proceeds from maturities, calls and principal repayments of investment securities held to maturity	175,896	13,631
Proceeds from sales of investment securities available for sale	4,075	681,633
Purchases of investment securities available for sale	0	(929,754)
Purchases of investment securities held to maturity	(73,074)	0
Origination of mortgage warehouse loans	(15,385,554)	(23,568,943)
Proceeds from repayments of mortgage warehouse loans	15,766,489	24,247,843
Net (increase) decrease in loans and leases, excluding mortgage warehouse loans	1,586,922	(1,639,900)
Proceeds from sales of loans and leases	409,503	136,920
Purchases of loans	(702,409)	(368,776)
Proceeds from bank-owned life insurance	56,645	11,807
Net purchases of sale of FHLB, Federal Reserve Bank, and other restricted stock	(51,667)
Net proceeds from sale of FHLB, Federal Reserve Bank, and other restricted stock		6,880
Purchases of bank premises and equipment	(521)	(587)
Proceeds from sale of fixed assets	73	0
Proceeds from sale of other real estate owned	33	0
Proceeds from sales of leased assets under lessor operating leases	2,515	2,889
Purchases of leased assets under lessor operating leases	(20,257)	(86,797)
Net Cash Provided By (Used In) Investing Activities	1,997,172	(1,085,108)
Cash Flows from Financing Activities
Net increase (decrease) in deposits	36,624	744,514
Net increase (decrease) in short-term borrowed funds from FHLB	(300,000)	(700,000)
Net increase (decrease) in federal funds purchased	0	290,000
Proceeds from long-term borrowed funds from FHLB and FRB	2,565,000	500,000
Repayments of long-term borrowed funds from FHLB and FRB	(1,525,000)	0
Repayments of other borrowings	0	(100,000)
Preferred stock dividends paid	(10,823)	(6,374)
Purchase of treasury stock	(39,806)	(27,820)
Payments of employee taxes withheld from share-based awards	(2,429)	(4,248)
Proceeds from issuance of common stock	324	447
Net Cash Provided By (Used In) Financing Activities	723,890	696,519
Net Increase (Decrease) in Cash and Cash Equivalents	2,964,168	(113,567)
Cash and Cash Equivalents – Beginning	455,806	518,032
Cash and Cash Equivalents – Ending	3,419,974	404,465
Non-cash Investing and Financing Activities:
Transfer of investment securities available for sale to held to maturity	0	500,174
Purchases of investment securities held to maturity upon sale of consumer installment loans	436,841	400,001
Transfer of loans held for investment to held for sale	309,076	4,108
Transfer of loans held for sale to held for investment	$ 14,377	$ 0

Description of the Business

Description of the Business	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of the Business	DESCRIPTION OF THE BUSINESS Customers Bancorp, Inc. (“Customers Bancorp”) is a bank holding company engaged in banking activities through its wholly owned subsidiary, Customers Bank ("the Bank”), collectively referred to as “Customers” herein. Customers Bancorp and its wholly owned subsidiaries, the Bank, and non-bank subsidiaries, serve residents and businesses in Southeastern Pennsylvania (Bucks, Berks, Chester, Philadelphia and Delaware Counties); Harrisburg, Pennsylvania (Dauphin County); Rye Brook, New York (Westchester County); Hamilton, New Jersey (Mercer County); Boston, Massachusetts; Providence, Rhode Island; Portsmouth, New Hampshire (Rockingham County); Manhattan and Melville, New York; Washington, D.C.; Chicago, Illinois; Dallas, Texas; Orlando and Jacksonville, Florida; Wilmington and Charlotte, North Carolina; and nationally for certain loan and deposit products. The Bank has seven branches and provides commercial banking products, primarily loans and deposits. In addition, the Bank also administratively supports loan and other financial products, including equipment finance leases, to customers through its limited-purpose offices in Boston, Massachusetts; Providence, Rhode Island; Portsmouth, New Hampshire; Manhattan and Melville, New York; Philadelphia and Lancaster, Pennsylvania; Chicago, Illinois; Dallas, Texas; Wilmington and Charlotte, North Carolina; and other locations. The Bank also serves specialty niche businesses nationwide, including its commercial loans to mortgage companies, commercial equipment financing, SBA lending, specialty lending and consumer loans through relationships with fintech companies. The Bank is subject to regulation of the Pennsylvania Department of Banking and Securities and the Federal Reserve Bank and is periodically examined by those regulatory authorities.

Significant Accounting Policies

Significant Accounting Policies and Basis of Presentation	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Significant Accounting Policies and Basis of Presentation	SIGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION Basis of Presentation The interim unaudited consolidated financial statements have been prepared in conformity with U.S. GAAP and pursuant to the rules and regulations of the SEC. These interim unaudited consolidated financial statements reflect all normal and recurring adjustments that are, in the opinion of management, necessary to present a fair statement of the financial position and the results of operations and cash flows of Customers Bancorp and subsidiaries for the interim periods presented. Certain information and footnote disclosures normally included in the annual consolidated financial statements have been omitted from these interim unaudited consolidated financial statements as permitted by SEC rules and regulations. The December 31, 2022 consolidated balance sheet presented in this report has been derived from Customers Bancorp’s audited 2022 consolidated financial statements. Management believes that the disclosures are adequate to present fairly the consolidated financial statements as of the dates and for the periods presented. These interim unaudited consolidated financial statements should be read in conjunction with the 2022 consolidated financial statements of Customers Bancorp and subsidiaries included in Customers' Annual Report on Form 10-K for the year ended December 31, 2022 filed with the SEC on February 28, 2023 (the "2022 Form 10-K"). The 2022 Form 10-K describes Customers Bancorp’s significant accounting policies. There have been no material changes to Customers Bancorp's significant accounting policies noted above for the three and nine months ended September 30, 2023. Recently Issued Accounting Standards Presented below are recently issued accounting standards that Customers has adopted as well as those that the FASB has issued but are not yet effective. Accounting Standards Adopted in 2022 Standard Summary of Guidance Effects on Financial Statements ASU 2022-06, Reference Rate Reform (Topic 848) - Deferral of the Sunset Date of Topic 848 and Amendments to the Definition of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate Issued December 2022 • Defers the sunset date of ASC 848 that provides optional guidance for a limited period of time to ease the potential burden in accounting for (or derecognizing the effects of) reference rate reform on financial reporting. Specifically, ASC 848 provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. These relate only to those contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. Certain optional expedients and exceptions in ASC 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition, including derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. • Amends the definition of the SOFR Overnight Index Swap Rate to any rate based on SOFR qualifies as a benchmark interest rate for purposes of applying fair value hedge accounting. • Effective as of December 21, 2022 and ASC 848 can be adopted anytime during the period of January 1, 2020 through December 31, 2024. • Customers adopted the guidance in ASC 848 during the adoption period for certain optional expedients. • The adoption of ASC 848 did not have a material impact on Customers' financial condition, results of operations and consolidated financial statements. • Customers elected to apply optional expedients for certain contract modifications during the three and nine months ended September 30, 2023, which did not have a material impact on Customers' financial condition, results of operations and consolidated financial statements. Customers plans to elect additional optional expedients in the future, which are not expected to have a material impact on Customers' financial condition, results of operations and consolidated financial statements. Accounting Standards Adopted in 2023 Standard Summary of Guidance Effects on Financial Statements ASU 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures Issued March 2022 • Eliminates the accounting guidance for TDRs by creditors, and applies the loan refinancing and restructuring guidance when a borrower is experiencing financial difficulty to determine whether a modification results in a new loan or a continuation of an existing loan. • Provides enhanced disclosure requirements for certain loan refinancing and restructurings and disclosure of current-period gross write-offs by year of origination for financing receivables and net investments in leases within the scope of ASC 326. • Effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period, provided the amendments are adopted as of the beginning of the fiscal year that includes the interim period of adoption. Early adoption is permitted separately for the amendments to TDRs and vintage disclosures. • TDR and vintage disclosures are to be adopted prospectively. An entity may adopt TDR recognition and measurement guidance prospectively or elect to use a modified retrospective transition method, with a cumulative effect adjustment to retained earnings at the beginning of the period of adoption. • Customers adopted this guidance on January 1, 2023 using a modified retrospective transition method for TDR recognition and measurement. • This guidance did not have a material impact on Customers' financial condition, results of operations and consolidated financial statements. • Additional disclosures related to gross write-offs by year of origination and certain loan modifications to borrowers experiencing financial difficulty are presented in NOTE 7 – LOANS AND LEASES RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LEASES. Accounting Standards Issued But Not Yet Adopted Standard Summary of Guidance Effects on Financial Statements ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions Issued June 2022 • Clarifies that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security and not considered in measuring fair value. • Prohibits recognition and measurement of a contractual sale restriction on the sale of an equity security as a separate unit of account. • Provides disclosure requirements for the equity securities subject to contractual sale restrictions. • Effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted for both interim and annual financial statements that have not yet been issued or made available for issuance. • Customers will adopt this guidance on January 1, 2024. This guidance is not expected to have a material impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method Issued March 2023 • Provides an election to account for tax equity investments, regardless of the tax credit program, using the proportional amortization method provided that certain conditions are met. • Customers will adopt this guidance on January 1, 2024. This guidance is not expected to have a material impact on Customers' financial condition, results of operations and consolidated financial statements.

Earnings (Loss) Per Share

Earnings (Loss) Per Share	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	EARNINGS (LOSS) PER SHARE The following are the components and results of Customers' earnings per common share calculations for the periods presented. Three Months Ended Nine Months Ended (amounts in thousands, except share and per share data) 2023 2022 2023 2022 Net income available to common shareholders $ 82,953 $ 61,364 $ 177,225 $ 192,779 Weighted-average number of common shares outstanding – basic 31,290,581 32,455,814 31,452,700 32,706,652 Share-based compensation plans 884,503 770,793 583,759 1,000,212 Weighted-average number of common shares – diluted 32,175,084 33,226,607 32,036,459 33,706,864 Basic earnings per common share $ 2.65 $ 1.89 $ 5.63 $ 5.89 Diluted earnings per common share 2.58 1.85 5.53 5.72 The following are securities that could potentially dilute basic earnings per common share in future periods that were not included in the computation of diluted earnings per common share because either the performance conditions for certain of the share-based compensation awards have not been met or to do so would have been anti-dilutive for the periods presented. Three Months Ended Nine Months Ended 2023 2022 2023 2022 Anti-dilutive securities: Share-based compensation awards 319,973 730,486 685,951 100,707

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income (Loss) by Component	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Changes in Accumulated Other Comprehensive Income (Loss) by Component	CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) BY COMPONENT The following tables present the changes in accumulated other comprehensive income (loss) by component for the three and nine months ended September 30, 2023 and 2022. Amounts in parentheses indicate reductions to AOCI. Unrealized Gains (Losses) on Available for Sale Securities (1) Three Months Ended September 30, (amounts in thousands) 2023 2022 Balance at July 1 $ (168,176) $ (124,881) Unrealized gains (losses) arising during period, before tax 23,666 (46,450) Income tax effect (6,011) 12,077 Other comprehensive income (loss) before reclassifications 17,655 (34,373) Reclassification adjustments for (gains) losses included in net income, before tax (429) 4,227 Income tax effect 109 (1,099) Amounts reclassified from accumulated other comprehensive income (loss) to net income (320) 3,128 Amortization of unrealized loss on securities transferred from available for sale to held to maturity 1,379 — Income tax effect (350) — Amortization of unrealized loss on securities transferred from available for sale to held to maturity 1,029 — Net current-period other comprehensive income (loss) 18,364 (31,245) Balance at September 30 $ (149,812) $ (156,126) Unrealized Gains (Losses) Available for Sale Securities (1) Nine Months Ended September 30, (amounts in thousands) 2023 2022 Balance at January 1 $ (163,096) $ (4,980) Unrealized gains (losses) arising during period, before tax 14,535 (213,532) Income tax effect (3,692) 55,518 Other comprehensive income (loss) before reclassifications 10,843 (158,014) Reclassification adjustments for (gains) losses included in net income, before tax (429) 9,281 Income tax effect 109 (2,413) Amounts reclassified from accumulated other comprehensive income (loss) to net income (320) 6,868 Amortization of unrealized loss on securities transferred from available for sale to held to maturity 3,700 — Income tax effect (939) — Amortization of unrealized loss on securities transferred from available for sale to held to maturity 2,761 — Net current-period other comprehensive income (loss) 13,284 (151,146) Balance at September 30 $ (149,812) $ (156,126) (1) Reclassification amounts for AFS debt securities are reported as gain (loss) on sale of investment securities and amortization of unrealized losses on debt securities transferred from available-for-sale to held-to-maturity is reported within interest income on the consolidated statements of income.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES Investment securities at fair value The amortized cost, approximate fair value and allowance for credit losses of investment securities at fair value as of September 30, 2023 and December 31, 2022 are summarized as follows: September 30, 2023 (1) (amounts in thousands) Amortized Cost Allowance for Credit Losses Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for sale debt securities: Asset-backed securities $ 111,915 $ (1,755) $ 4 $ (5,448) $ 104,716 Agency-guaranteed residential collateralized mortgage obligations 133,425 — — (14,956) 118,469 Collateralized loan obligations 826,764 — 817 (11,725) 815,856 Commercial mortgage-backed securities 136,111 — — (4,923) 131,188 Corporate notes 638,230 (2,094) 86 (57,325) 578,897 Private label collateralized mortgage obligations 1,064,789 — 687 (67,874) 997,602 Available for sale debt securities $ 2,911,234 $ (3,849) $ 1,594 $ (162,251) 2,746,728 Equity securities (2) 26,479 Total investment securities, at fair value $ 2,773,207 December 31, 2022 (1) (amounts in thousands) Amortized Cost Allowance for Credit Losses Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for sale debt securities: Asset-backed securities $ 169,170 $ (578) $ — $ (8,050) $ 160,542 Agency-guaranteed residential collateralized mortgage obligations 147,481 — — (13,617) 133,864 Collateralized loan obligations 896,992 — 88 (24,342) 872,738 Commercial mortgage-backed securities 142,222 — 1 (5,866) 136,357 Corporate notes 657,086 — 45 (61,878) 595,253 Private label collateralized mortgage obligations 1,125,583 — 308 (63,630) 1,062,261 Available for sale debt securities $ 3,138,534 $ (578) $ 442 $ (177,383) 2,961,015 Equity securities (2) 26,485 Total investment securities, at fair value $ 2,987,500 (1) Accrued interest on AFS debt securities totaled $19.7 million and $16.7 million at September 30, 2023 and December 31, 2022, respectively, and is included in accrued interest receivable on the consolidated balance sheet. (2) Includes perpetual preferred stock issued by domestic banks and domestic bank holding companies and equity securities issued by fintech companies, without a readily determinable fair value, and CRA-qualified mutual fund shares at September 30, 2023 and December 31, 2022. No impairments or measurement adjustments have been recorded on the equity securities without a readily determinable fair value since acquisition. Customers' transactions with unconsolidated VIEs include sales of consumer installment loans and investments in the securities issued by the VIEs. Customers is not the primary beneficiary of the VIEs because Customers has no right to make decisions that will most significantly affect the economic performance of the VIEs. Customers' continuing involvement with the unconsolidated VIEs is not significant. Customers' continuing involvement is not considered to be significant when Customers only invests in securities issued by the VIE and was not involved in the design of the VIE or when Customers has transferred financial assets to the VIE for only cash consideration. Customers' investments in the securities issued by the VIEs are classified as AFS or HTM debt securities on the consolidated balance sheets, and represent Customers' maximum exposure to loss. Proceeds from the sale of AFS debt securities were $4.1 million for the three and nine months ended September 30, 2023. Proceeds from the sale of AFS debt securities were $126.6 million and $681.6 million for the three and nine months ended September 30, 2022, respectively. The following table presents gross realized gains and realized losses from the sale of AFS debt securities for the three and nine months ended September 30, 2023 and 2022: Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) 2023 2022 2023 2022 Gross realized gains $ — $ — $ — $ 2,563 Gross realized losses (429) (2,135) (429) (8,790) Net realized gains (losses) on sale of available for sale debt securities $ (429) $ (2,135) $ (429) $ (6,227) These gains (losses) were determined using the specific identification method and were reported as net gain (loss) on sale of investment securities within non-interest income on the consolidated statements of income. The following table presents AFS debt securities by stated maturity. Debt securities backed by mortgages and other assets have expected maturities that differ from contractual maturities because borrowers have the right to call or prepay and, therefore, these debt securities are classified separately with no specific maturity date: September 30, 2023 (amounts in thousands) Amortized Fair Due in one year or less $ 7,500 $ 7,444 Due after one year through five years 532,269 488,929 Due after five years through ten years 98,461 82,524 Asset-backed securities 111,915 104,716 Agency-guaranteed residential collateralized mortgage obligations 133,425 118,469 Collateralized loan obligations 826,764 815,856 Commercial mortgage-backed securities 136,111 131,188 Private label collateralized mortgage obligations 1,064,789 997,602 Total available for sale debt securities $ 2,911,234 $ 2,746,728 Gross unrealized losses and fair value of Customers' AFS debt securities for which an allowance for credit losses has not been recorded, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2023 and December 31, 2022 were as follows: September 30, 2023 Less Than 12 Months 12 Months or More Total (amounts in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available for sale debt securities: Asset-backed securities $ — $ — $ 42,932 $ (2,547) $ 42,932 $ (2,547) Agency-guaranteed residential collateralized mortgage obligations — — 133,425 (14,956) 133,425 (14,956) Collateralized loan obligations 46,333 (1,472) 614,978 (10,253) 661,311 (11,725) Commercial mortgage-backed securities — — 134,866 (4,923) 134,866 (4,923) Corporate notes 84,827 (3,106) 469,187 (45,202) 554,014 (48,308) Private label collateralized mortgage obligations 154,078 (10,605) 674,943 (57,269) 829,021 (67,874) Total $ 285,238 $ (15,183) $ 2,070,331 $ (135,150) $ 2,355,569 $ (150,333) December 31, 2022 Less Than 12 Months 12 Months or More Total (amounts in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available for sale debt securities: Asset-backed securities $ 160,542 $ (8,050) $ — $ — $ 160,542 $ (8,050) Agency-guaranteed residential collateralized mortgage obligations 133,864 (13,617) — — 133,864 (13,617) Collateralized loan obligations 386,701 (13,516) 315,270 (10,826) 701,971 (24,342) Commercial mortgage-backed securities 39,828 (1,410) 93,005 (4,456) 132,833 (5,866) Corporate notes 386,464 (36,119) 178,955 (25,759) 565,419 (61,878) Private label collateralized mortgage obligations 478,096 (29,364) 314,332 (34,266) 792,428 (63,630) Total $ 1,585,495 $ (102,076) $ 901,562 $ (75,307) $ 2,487,057 $ (177,383) At September 30, 2023, there were 25 AFS debt securities with unrealized losses in the less-than-twelve-months category and 155 AFS debt securities with unrealized losses in the twelve-months-or-more category. Except for four asset-backed securities and twelve corporate notes where there was a deterioration in future estimated cash flows as further discussed below, the unrealized losses were principally due to changes in market interest rates and credit spreads that resulted in a negative impact on the respective securities' fair value and are expected to be recovered when market prices recover or at maturity. Customers does not intend to sell any of the 180 securities, and it is not more likely than not that Customers will be required to sell any of the 180 securities before recovery of the amortized cost basis. At December 31, 2022, there were 156 AFS debt securities in an unrealized loss position. Customers recorded an allowance for credit losses on four asset-backed securities and twelve corporate notes where there was a deterioration in future estimated cash flows during the three and nine months ended September 30, 2023 and on four asset-backed securities during the three and nine months ended September 30, 2022. A discounted cash flow approach is used to determine the amount of the allowance. The cash flows expected to be collected, after considering expected prepayments, are discounted at the original effective interest rate. The amount of the allowance is limited to the difference between the amortized cost basis of the security and its estimated fair value. The following tables present the activity in the allowance for credit losses on AFS debt securities, by major security type, for the periods presented: Three Months Ended September 30, 2023 2022 (amounts in thousands) Asset-backed securities Corporate notes Total Asset-backed securities Corporate notes Total Balance at July 1 $ 1,563 $ 1,876 $ 3,439 $ 411 $ — $ 411 Credit losses on securities for which credit losses were not previously recorded — 564 564 — — — Credit losses on previously impaired securities 442 69 511 — — — Decrease in allowance for credit losses on previously impaired securities (250) (24) (274) (158) — (158) Reduction due to sales — (391) (391) — — — Balance at September 30 $ 1,755 $ 2,094 $ 3,849 $ 253 $ — $ 253 Nine Months Ended September 30, 2023 2022 (amounts in thousands) Asset-backed securities Corporate notes Total Asset-backed securities Corporate notes Total Balance at January 1 $ 578 $ — $ 578 $ — $ — $ — Credit losses on securities for which credit losses were not previously recorded — 2,485 2,485 253 — 253 Credit losses on previously impaired securities 1,488 — 1,488 — — — Decrease in allowance for credit losses on previously impaired securities (311) — (311) — — — Reduction due to sales — (391) (391) — — — Balance at September 30 $ 1,755 $ 2,094 $ 3,849 $ 253 $ — $ 253 At September 30, 2023 and December 31, 2022, no securities holding of any one issuer, other than the U.S. government and its agencies, amounted to greater than 10% of shareholders' equity. At September 30, 2023, Customers Bank had pledged AFS investment securities aggregating $1.5 billion in fair value as collateral for immediately available liquidity from the FRB, including the BTFP. The counterparty does not have the ability to sell or repledge these securities. Investment securities held to maturity The amortized cost, approximate fair value and allowance for credit losses of investment securities held to maturity as of September 30, 2023 and December 31, 2022 are summarized as follows: September 30, 2023 (1) (amounts in thousands) Amortized Cost Allowance for Credit Losses Net Carrying Value Gross Unrealized Gains Gross Unrealized Losses Fair Value Held to maturity debt securities: Asset-backed securities $ 645,362 $ — $ 645,362 $ — $ (5,174) $ 640,188 Agency-guaranteed residential mortgage-backed securities 7,077 — 7,077 — (1,027) 6,050 Agency-guaranteed commercial mortgage-backed securities 1,870 — 1,870 — (139) 1,731 Agency-guaranteed residential collateralized mortgage obligations 191,469 — 191,469 — (23,331) 168,138 Agency-guaranteed commercial collateralized mortgage obligations 147,414 — 147,414 — (15,848) 131,566 Private label collateralized mortgage obligations 185,178 — 185,178 — (17,275) 167,903 Total held to maturity debt securities $ 1,178,370 $ — $ 1,178,370 $ — $ (62,794) $ 1,115,576 December 31, 2022 (1) (amounts in thousands) Amortized Cost Allowance for Credit Losses Net Carrying Value Gross Unrealized Gains Gross Unrealized Losses Fair Value Held to maturity debt securities: Asset-backed securities $ 361,107 $ — $ 361,107 $ — $ (4,974) $ 356,133 Agency-guaranteed residential mortgage-backed securities 7,189 — 7,189 — (563) 6,626 Agency-guaranteed commercial mortgage-backed securities 1,928 — 1,928 — (104) 1,824 Agency-guaranteed residential collateralized mortgage obligations 204,495 — 204,495 — (18,376) 186,119 Agency-guaranteed commercial collateralized mortgage obligations 151,711 — 151,711 — (9,435) 142,276 Private label collateralized mortgage obligations 113,829 — 113,829 — (12,994) 100,835 Total held to maturity debt securities $ 840,259 $ — $ 840,259 $ — $ (46,446) $ 793,813 (1) Accrued interest on HTM debt securities totaled $2.7 million and $1.0 million at September 30, 2023 and December 31, 2022, respectively, and is included in accrued interest receivable on the consolidated balance sheet. On June 30, 2023, Customers sold consumer installment loans that were classified as held for sale with a carrying value of $556.7 million, inclusive of $154.0 million of other installment loans transferred from held for investment to held for sale during the three months ended June 30, 2023, accrued interest and unamortized deferred loan origination costs, to two third-party sponsored VIEs. As part of these sales, Customers recognized a loss on sale of $1.2 million, inclusive of transaction costs, in gain (loss) on sale of SBA and other loans within non-interest income included in the consolidated statement of income for the nine months ended September 30, 2023. Customers provided financing to the purchasers for a portion of the sale price in the form of $436.8 million of asset-backed securities, presented in the table above, collateralized by the sold loans. Customers will act as the servicer for the sold consumer installment loans to one of the VIEs, and will receive a servicing fee. Customers recognized a servicing asset of $3.8 million upon sale. At the time of the sale, and at each subsequent reporting period, Customers is required to evaluate its involvement with the VIEs to determine if it holds a variable interest in the VIEs and, if so, if Customers is the primary beneficiary of the VIEs. If Customers is both a variable interest holder and the primary beneficiary of the VIEs, it would be required to consolidate the VIEs. As of September 30, 2023, Customers concluded that its investments in asset-backed securities as well as the servicing fees are considered variable interests in the VIEs as there is a possibility, even if remote, that would result in Customers' interests in the asset-backed securities or the servicing fees absorbing some of the losses of the VIEs. After concluding that Customers has one or more variable interests in the VIEs, Customers must determine if it is the primary beneficiary of the VIEs. U.S. GAAP defines the primary beneficiary as the entity that has both an economic exposure to the VIE as well as the power to direct the activities that are determined to be most significant to the economic performance of the VIE. In order to make this determination, Customers needed to first establish which activities are the most significant to the economic performance of the VIEs. Based on a review of the VIEs' activities, Customers concluded the servicing activities, specifically those performed for significantly delinquent loans contribute most significantly to the performance of the loans and thus the VIEs. This conclusion is based upon review of the historical performance of the types of consumer installment loans sold to the VIEs, as well as consideration of which activities performed by the owner or servicer of the loans contribute most significantly to the ultimate performance of the loans. The loan servicing agreement between Customers and the VIE for a portion of the sold consumer loans provide that the VIE has substantive kick out rights to replace Customers as the servicer with or without cause. Accordingly, as a holder of the asset-backed securities and the servicer of the loans, Customers does not have the power to direct the servicing of significantly delinquent loans given the VIEs' substantive kick-out rights. As discussed above, Customers is not the servicer for the sold consumer loans to one of the VIEs and therefore does not have the power to direct the activities that most significantly impact the economic performance of this VIE. As the activities which most significantly affect the performance of the VIEs are not controlled by Customers, Customers has concluded that it is therefore not the primary beneficiary and does not consolidate the VIEs. Customers accounted for its investments in the asset-backed securities as HTM debt securities on the consolidated balance sheet. The following table presents HTM debt securities by stated maturity, including debt securities backed by mortgages and other assets with expected maturities that differ from contractual maturities because borrowers have the right to call or prepay and, therefore, are classified separately with no specific maturity date: September 30, 2023 (amounts in thousands) Amortized Fair Asset-backed securities $ 645,362 $ 640,188 Agency-guaranteed residential mortgage-backed securities 7,077 6,050 Agency-guaranteed commercial mortgage-backed securities 1,870 1,731 Agency-guaranteed residential collateralized mortgage obligations 191,469 168,138 Agency-guaranteed commercial collateralized mortgage obligations 147,414 131,566 Private label collateralized mortgage obligations 185,178 167,903 Total held to maturity debt securities $ 1,178,370 $ 1,115,576 Customers recorded no allowance for credit losses on investment securities classified as held to maturity at September 30, 2023 and December 31, 2022. The U.S. government agency securities represent obligations issued by a U.S. government-sponsored enterprise or other federal government agency that are explicitly or implicitly guaranteed by the U.S. federal government and therefore, assumed to have zero credit losses. The private label collateralized mortgage obligations are highly rated with sufficient overcollateralization, and therefore, are estimated to have no expected credit losses. Customers recorded no allowance for its investments in the asset-backed securities. Customers considered the seniority of its beneficial interests, which include overcollateralization of these asset-backed securities in the estimate of the ACL at September 30, 2023 and December 31, 2022. The unrealized losses on HTM debt securities with no ACL were primarily due to changes in market interest rates that resulted in a negative impact on the respective securities' fair value and are expected to be recovered when market prices recover or at maturity. Credit Quality Indicators Customers monitors the credit quality of HTM debt securities primarily through credit ratings provided by rating agencies. Investment grade debt securities are rated BBB- or higher by S&P Global Ratings, Baa3 or higher by Moody's Investors Service or equivalent ratings by other rating agencies, and are generally considered to be of low credit risk. Except for the asset-backed securities and a private label collateralized mortgage obligation, all of the HTM debt securities held by Customers were investment grade or U.S. government agency guaranteed securities that were not rated at September 30, 2023 and December 31, 2022. The asset-backed securities and a private label collateralized mortgage obligation are not rated by rating agencies. Customers monitors the credit quality of these asset-backed securities and a private label collateralized mortgage obligation by evaluating the performance of the sold consumer installment loans and other underlying loans against the overcollateralization available for these securities. The following table presents the amortized cost of HTM debt securities based on their lowest credit rating available: September 30, 2023 (amounts in thousands) AAA AA A Not Rated Total Held to maturity debt securities: Asset-backed securities $ — $ — $ — $ 645,362 $ 645,362 Agency-guaranteed residential mortgage-backed securities — — — 7,077 7,077 Agency-guaranteed commercial mortgage-backed securities — — — 1,870 1,870 Agency-guaranteed residential collateralized mortgage obligations — — — 191,469 191,469 Agency-guaranteed commercial collateralized mortgage obligations — — — 147,414 147,414 Private label collateralized mortgage obligations 67,528 18,234 25,920 73,496 185,178 Total held to maturity debt securities $ 67,528 $ 18,234 $ 25,920 $ 1,066,688 $ 1,178,370 Customers has elected to not estimate an ACL on accrued interest receivable on HTM debt securities, as it already has a policy in place to reverse or write-off accrued interest, through interest income, for debt securities in nonaccrual status in a timely manner. At September 30, 2023 and December 31, 2022, there were no HTM debt securities past due under the terms of their agreements or in nonaccrual status.

Loans Held for Sale

Loans Held for Sale	9 Months Ended
	Sep. 30, 2023
Receivable, Held-for-Sale [Abstract]
Loans Held for Sale	LOANS HELD FOR SALE The composition of loans held for sale as of September 30, 2023 and December 31, 2022 was as follows: (amounts in thousands) September 30, 2023 December 31, 2022 Commercial loans: Multifamily loans, at lower of cost or fair value $ — $ 4,079 Total commercial loans held for sale — 4,079 Consumer loans: Home equity conversion mortgages, at lower of cost or fair value — 507 Residential mortgage loans, at fair value 1,005 322 Personal installment loans, at lower of cost or fair value 124,848 133,801 Other installment loans, at lower of cost or fair value — 189,603 Other installment loans, at fair value 24,515 — Total consumer loans held for sale 150,368 324,233 Loans held for sale $ 150,368 $ 328,312 Total loans held for sale included NPLs of $0.2 million and $6.2 million as of September 30, 2023 and December 31, 2022, respectively. On June 30, 2023, Customers sold $556.7 million of personal and other installment loans that were classified as held for sale, inclusive of $154.0 million of other installment loans transferred from held for investment to held for sale during the three months ended June 30, 2023, accrued interest and unamortized deferred loan origination costs, to two third-party sponsored VIEs. Customers provided financing to the purchasers for a portion of the sales price in the form of $436.8 million of asset-backed securities while $115.1 million of the remaining sales proceeds were paid in cash. Refer to NOTE 5 – INVESTMENT SECURITIES for additional information.

Loans and Leases Receivable and

Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases	LOANS AND LEASES RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LEASES The following table presents loans and leases receivable as of September 30, 2023 and December 31, 2022. (amounts in thousands) September 30, 2023 December 31, 2022 Loans and leases receivable, mortgage warehouse, at fair value $ 962,566 $ 1,323,312 Loans receivable, PPP 137,063 998,153 Loans and leases receivable: Commercial: Commercial and industrial: Specialty lending (1) 5,422,161 5,412,887 Other commercial and industrial 1,195,347 1,259,943 Multifamily 2,130,213 2,213,019 Commercial real estate owner occupied 794,815 885,339 Commercial real estate non-owner occupied 1,178,203 1,290,730 Construction 252,588 162,009 Total commercial loans and leases receivable 10,973,327 11,223,927 Consumer: Residential real estate 483,133 497,952 Manufactured housing 40,129 45,076 Installment: Personal 629,843 964,641 Other 337,053 413,298 Total consumer loans receivable 1,490,158 1,920,967 Loans and leases receivable 12,463,485 13,144,894 Allowance for credit losses on loans and leases (139,213) (130,924) Total loans and leases receivable, net of allowance for credit losses on loans and leases (2) $ 13,423,901 $ 15,335,435 (1) Includes direct finance equipment leases of $193.8 million and $157.4 million at September 30, 2023 and December 31, 2022, respectively. (2) Includes deferred (fees) costs and unamortized (discounts) premiums, net of $(35.8) million and $(21.5) million at September 30, 2023 and December 31, 2022, respectively. Customers' total loans and leases receivable includes loans receivable which are reported at fair value based on an election made to account for these loans at fair value and loans and leases receivable which are predominately reported at their outstanding unpaid principal balance, net of charge-offs, deferred costs and fees and unamortized premiums and discounts, and are evaluated for impairment. The total amount of accrued interest recorded for total loans was $96.8 million and $105.5 million at September 30, 2023 and December 31, 2022, respectively, and is presented in accrued interest receivable in the consolidated balance sheet. At September 30, 2023 and December 31, 2022, there were $18.4 million and $11.5 million of individually evaluated loans that were collateral-dependent, respectively. Substantially all individually evaluated loans were collateral-dependent and consisted primarily of commercial and industrial, commercial real estate, and residential real estate loans. Collateral-dependent commercial and industrial loans were secured by accounts receivable, inventory and equipment; collateral-dependent commercial real estate loans were secured by commercial real estate assets; and residential real estate loans were secured by residential real estate assets. Loans receivable, mortgage warehouse, at fair value Mortgage warehouse loans consist of commercial loans to mortgage companies. These mortgage warehouse lending transactions are subject to master repurchase agreements. As a result of the contractual provisions, for accounting purposes, control of the underlying mortgage loan has not transferred and the rewards and risks of the mortgage loans are not assumed by Customers. The mortgage warehouse loans are designated as loans held for investment and reported at fair value based on an election made to account for the loans at fair value. Pursuant to the agreements, Customers funds the pipelines for these mortgage lenders by sending payments directly to the closing agents for funded mortgage loans and receives proceeds directly from third party investors when the underlying mortgage loans are sold into the secondary market. The fair value of the mortgage warehouse loans is estimated as the amount of cash initially advanced to fund the mortgage, plus accrued interest and fees, as specified in the respective agreements. The interest rates on these loans are variable, and the lending transactions are short-term, with an average life under 30 days from purchase to sale. The primary goal of these lending transactions is to provide liquidity to mortgage companies. At September 30, 2023 and December 31, 2022, all of Customers' commercial mortgage warehouse loans were current in terms of payment. As these loans are reported at their fair value, they do not have an ACL and are therefore excluded from ACL-related disclosures. Loans receivable, PPP Customers had $137.1 million and $998.2 million of PPP loans outstanding as of September 30, 2023 and December 31, 2022, respectively, which are fully guaranteed by the SBA, provided that the SBA's eligibility criteria are met and earn a fixed interest rate of 1.00%. Customers recognized interest income, including net origination fees, of $0.6 million and $25.8 million for the three and nine months ended September 30, 2023, respectively. Customers recognized interest income, including net origination fees, of $14.7 million and $72.1 million for the three and nine months ended September 30, 2022, respectively. PPP loans include an embedded credit enhancement from the SBA, which guarantees 100% of the principal and interest owed by the borrower provided that the SBA's eligibility criteria are met. As a result, the eligible PPP loans do not have an ACL and are therefore excluded from ACL-related disclosures. PPP loans that are subsequently determined to be ineligible for SBA forgiveness and guarantee are included as part of the commercial and industrial loan portfolio. Loans and leases receivable The following tables summarize loans and leases receivable by loan and lease type and performance status as of September 30, 2023 and December 31, 2022: September 30, 2023 (amounts in thousands) 30-59 Days past due (1) 60-89 Days past due (1) 90 Days or more past due (2) Total past due Loans and leases not past due (3)(4) Total loans and leases (4) Commercial and industrial, including specialty lending $ 2,070 $ 1,273 $ 5,290 $ 8,633 $ 6,608,875 $ 6,617,508 Multifamily — — — — 2,130,213 2,130,213 Commercial real estate owner occupied 50 3,234 7,392 10,676 784,139 794,815 Commercial real estate non-owner occupied — — — — 1,178,203 1,178,203 Construction — — — — 252,588 252,588 Residential real estate 3,773 2,898 3,831 10,502 472,631 483,133 Manufactured housing 673 367 3,207 4,247 35,882 40,129 Installment 9,728 7,444 7,299 24,471 942,425 966,896 Total $ 16,294 $ 15,216 $ 27,019 $ 58,529 $ 12,404,956 $ 12,463,485 December 31, 2022 (amounts in thousands) 30-59 Days past due (1) 60-89 Days past due (1) 90 Days or more past due (2) Total past due Loans and leases not past due (3) Total loans and leases (4) Commercial and industrial, including specialty lending $ 3,123 $ 717 $ 1,415 $ 5,255 $ 6,667,575 $ 6,672,830 Multifamily 10,684 5,217 1,143 17,044 2,195,975 2,213,019 Commercial real estate owner occupied 5,173 — 2,704 7,877 877,462 885,339 Commercial real estate non-owner occupied 2,136 — 11 2,147 1,288,583 1,290,730 Construction — — — — 162,009 162,009 Residential real estate 5,208 1,157 3,158 9,523 488,429 497,952 Manufactured housing 901 537 3,346 4,784 40,292 45,076 Installment 11,246 7,942 9,527 28,715 1,349,224 1,377,939 Total $ 38,471 $ 15,570 $ 21,304 $ 75,345 $ 13,069,549 $ 13,144,894 (1) Includes past due loans and leases that are accruing interest because collection is considered probable. (2) Includes loans amounting to $0.6 million and $1.9 million as of September 30, 2023 and December 31, 2022, respectively, that are still accruing interest because collection is considered probable. (3) Loans and leases where next payment due is less than 30 days from the report date. The tables exclude PPP loans of $137.1 million, of which $1.3 million were 30-59 days past due and $106.9 million were 60 days or more past due as of September 30, 2023, and PPP loans of $998.2 million, of which $0.6 million were 30-59 days past due and $36.0 million were 60 days or more past due as of December 31, 2022. Claims for guarantee payments are submitted to the SBA for eligible PPP loans that are more than 60 days past due. (4) Includes PCD loans of $195.8 million and $8.3 million at September 30, 2023 and December 31, 2022, respectively. On June 15, 2023, Customers acquired $631.0 million of Venture Banking loan portfolio (included within Specialty Lending above) from the FDIC, which included $228.7 million of PCD loans. Nonaccrual Loans and Leases The following table presents the amortized cost of loans and leases held for investment on nonaccrual status. September 30, 2023 (1) December 31, 2022 (1) (amounts in thousands) Nonaccrual loans with no related allowance Nonaccrual loans with related allowance Total nonaccrual loans Nonaccrual loans with no related allowance Nonaccrual loans with related allowance Total nonaccrual loans Commercial and industrial, including specialty lending $ 3,297 $ 2,470 $ 5,767 $ 1,731 $ 30 $ 1,761 Multifamily — — — 1,143 — 1,143 Commercial real estate owner occupied 7,442 — 7,442 2,768 — 2,768 Residential real estate 6,441 118 6,559 6,922 — 6,922 Manufactured housing — 2,582 2,582 — 2,410 2,410 Installment — 7,299 7,299 — 9,527 9,527 Total $ 17,180 $ 12,469 $ 29,649 $ 12,564 $ 11,967 $ 24,531 (1) Presented at amortized cost basis. Interest income recognized on nonaccrual loans was insignificant for the three and nine months ended September 30, 2023 and 2022. Accrued interest reversed when the loans went to nonaccrual status was insignificant for the three and nine months ended September 30, 2023 and 2022. Allowance for credit losses on loans and leases The changes in the ACL on loans and leases by loan and lease type for the three and nine months ended September 30, 2023 and 2022 are presented in the tables below. (amounts in thousands) Commercial and industrial (1) Multifamily Commercial real estate owner occupied Commercial real estate non-owner occupied Construction Residential real estate Manufactured housing Installment Total Three Months Ended Ending Balance, $ 29,092 $ 15,400 $ 10,215 $ 13,495 $ 2,639 $ 6,846 $ 4,338 $ 57,631 $ 139,656 Charge-offs (9,008) (1,999) (39) — — (42) — (18,932) (30,020) Recoveries 6,034 — — — — 29 — 6,459 12,522 Provision (benefit) for credit losses on loans and leases (1,132) 2,469 187 2,324 491 (31) (258) 13,005 17,055 Ending Balance, $ 24,986 $ 15,870 $ 10,363 $ 15,819 $ 3,130 $ 6,802 $ 4,080 $ 58,163 $ 139,213 Nine Months Ended Ending Balance, $ 17,582 $ 14,541 $ 6,454 $ 11,219 $ 1,913 $ 6,094 $ 4,430 $ 68,691 $ 130,924 Allowance for credit losses on FDIC PCD loans, net of charge-offs (2) 2,576 — — — — — — — 2,576 Charge-offs (9,600) (3,447) (39) (4,527) — (69) — (52,031) (69,713) Recoveries 6,439 — 34 27 116 34 — 11,350 18,000 Provision (benefit) for credit losses on loans and leases 7,989 4,776 3,914 9,100 1,101 743 (350) 30,153 57,426 Ending Balance, $ 24,986 $ 15,870 $ 10,363 $ 15,819 $ 3,130 $ 6,802 $ 4,080 $ 58,163 $ 139,213 (amounts in thousands) Commercial and industrial (1) Multifamily Commercial real estate owner occupied Commercial real estate non-owner occupied Construction Residential real estate Manufactured housing Installment Total Three Months Ended Ending Balance, $ 11,081 $ 9,765 $ 4,745 $ 8,880 $ 1,179 $ 5,578 $ 4,080 $ 111,222 $ 156,530 Charge-offs (2,657) — — (4,862) — — — (13,965) (21,484) Recoveries 76 — — 31 10 13 — 2,857 2,987 Provision (benefit) for credit losses on loans and leases 6,631 4,479 1,475 7,283 425 (138) 402 (28,393) (7,836) Ending Balance, $ 15,131 $ 14,244 $ 6,220 $ 11,332 $ 1,614 $ 5,453 $ 4,482 $ 71,721 $ 130,197 Nine Months Ended Ending Balance, $ 12,702 $ 4,477 $ 3,213 $ 6,210 $ 692 $ 2,383 $ 4,278 $ 103,849 $ 137,804 Charge-offs (3,235) (1,990) — (5,025) — (4) — (35,681) (45,935) Recoveries 1,129 337 49 43 226 58 — 4,889 6,731 Provision (benefit) for credit losses on loans and leases 4,535 11,420 2,958 10,104 696 3,016 204 (1,336) 31,597 Ending Balance, $ 15,131 $ 14,244 $ 6,220 $ 11,332 $ 1,614 $ 5,453 $ 4,482 $ 71,721 $ 130,197 (1) Includes Specialty Lending. (2) Represents $8.7 million of allowance for credit losses on PCD loans recognized upon acquisition of a Venture Banking loan portfolio (included within Specialty Lending) from the FDIC on June 15, 2023, net of $6.2 million of charge-offs for certain of these PCD loans upon acquisition. At September 30, 2023, the ACL on loans and leases was $139.2 million, an increase of $8.3 million from the December 31, 2022 balance of $130.9 million. The increase in ACL for the three months ended September 30, 2023 was primarily attributable to the recognition of increased uncertainties in macroeconomic forecasts, partially offset by a decrease in loan balances held for investment. The increase in ACL for the nine months ended September 30, 2023 was primarily attributable to additional provision for credit losses from the recognition of weaker macroeconomic forecasts and the recognition of ACL for PCD loans acquired from the FDIC, net of related charge-offs upon acquisition, partially offset by a decrease in loan balances held for investment. Loan Modifications for Borrowers Experiencing Financial Difficulty Customers adopted ASU 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures ("ASU 2022-02") effective January 1, 2023. The amendments in ASU 2022-02 eliminated the recognition and measurement of TDRs and enhanced the disclosures for loan modifications to borrowers experiencing financial difficulty. Refer to NOTE 2 – SIGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION for additional information on the adoption. A borrower is considered to be experiencing financial difficulty when there is a significant doubt about the borrower's ability to make the required principal and interest payments on the loan or to get an equivalent financing from another creditor at a market rate for a similar loan. When borrowers are experiencing financial difficulty, Customers may make certain loan modifications as part of loss mitigation strategies to maximize expected payment. To be classified as a modification made to a borrower experiencing financial difficulty, the modification must be in the form of an interest rate reduction, principal forgiveness, or an other-than-insignificant payment delay (payment deferral), term extension, or combinations thereof. Customers will generally try other forms of relief before principal forgiveness. Any contractual reduction in the amount of principal due without receiving payment or assets is considered forgiveness. For the purpose of this disclosure, Customers considers any contractual change in interest rate that results in a reduction in interest rate relative to the current stated interest rate as an interest rate reduction. Generally, Customers considers any delay in payment of greater than 90 days in the last 12 months to be significant. Term extensions extend the original contractual maturity of the loan. For the purpose of this disclosure, modification of contingent payment features or covenants that would have accelerated payment are not considered term extensions. The following table presents the amortized cost of loans that were modified to borrowers experiencing financial difficulty for the three and nine months ended September 30, 2023, disaggregated by class of financing receivable and type of modification granted. Three Months Ended September 30, 2023 (dollars in thousands) Term Extension Payment Deferral Debt Forgiveness Interest Rate Reduction and Term Extension Total Percentage of Total by Financing Class Manufactured housing $ — $ — $ — $ 99 $ 99 0.25 % Personal installment 3,863 210 28 — 4,101 0.42 % Total $ 3,863 $ 210 $ 28 $ 99 $ 4,200 Nine Months Ended September 30, 2023 (dollars in thousands) Term Extension Payment Deferral Debt Forgiveness Interest Rate Reduction and Term Extension Total Percentage of Total by Financing Class Commercial real estate owner occupied $ 169 $ — $ — $ — $ 169 0.02 % Manufactured housing 6 — — 113 119 0.30 % Personal installment 10,910 442 222 — 11,574 1.20 % Total $ 11,085 $ 442 $ 222 $ 113 $ 11,862 As of September 30, 2023, there were no commitments to lend additional funds to debtors experiencing financial difficulty whose loans have been modified during the three and nine months ended September 30, 2023. The following table summarizes the impacts of loan modifications made to borrowers experiencing financial difficulty for the three and nine months ended September 30, 2023. Three Months Ended September 30, 2023 Weighted Average (dollars in thousands) Interest Rate Reduction (%) Term Extension Payment Deferral Debt Forgiven Manufactured housing 4.4% 31 0 $ — Personal installment — 6 6 20 Nine Months Ended September 30, 2023 Weighted Average (dollars in thousands) Interest Rate Reduction (%) Term Extension Payment Deferral Debt Forgiven Commercial real estate owner occupied — % 4 0 $ — Manufactured housing 4.3 30 0 — Personal installment — 6 6 183 The performance of loans made to borrowers experiencing financial difficulty in which modifications were made is closely monitored to understand the effectiveness of modification efforts. Loans are considered to be in payment default at 90 days or more past due. The following table presents an aging analysis of loan modifications made to borrowers experiencing financial difficulty during the nine months ended September 30, 2023. September 30, 2023 (dollars in thousands) 30-59 Days past due 60-89 Days past due 90 Days or more past due Current Total Commercial real estate owner occupied $ — $ — $ 169 $ — $ 169 Manufactured housing — — — 119 119 Personal installment 837 565 354 9,820 11,576 Total $ 837 $ 565 $ 523 $ 9,939 $ 11,864 As of September 30, 2023, the loans that were made to borrowers experiencing financial difficulty during the nine months ended September 30, 2023 that subsequently defaulted were not material. Customers' ACL is influenced by loan level characteristics that inform the assessed propensity to default. As such, the provision for credit losses is impacted by changes in such loan level characteristics, such as payment performance. Loans made to borrowers experiencing financial difficulty can be classified as either accrual or nonaccrual. Troubled Debt Restructuring At December 31, 2022, there were $16.8 million in loans reported as TDRs. The following table presents loans modified by type of concession for the three and nine months ended September 30, 2022. There were no modifications that involved forgiveness of debt for the three and nine months ended September 30, 2022. Three Months Ended September 30, 2022 Nine Months Ended September 30, 2022 (dollars in thousands) Number of loans Recorded investment Number of loans Recorded investment Interest-rate reductions — $ — 14 $ 470 Other (1) 71 739 170 1,933 Total 71 $ 739 184 $ 2,403 (1) Other includes covenant modifications, forbearance, loans discharged under Chapter 7 bankruptcy, or other concessions. As of December 31, 2022, there were no commitments to lend additional funds to debtors whose loans have been modified in TDRs. The following table presents, by loan type, the number of loans modified in TDRs and the related recorded investment, for which there was a payment default within twelve months following the modification. September 30, 2022 (dollars in thousands) Number of loans Recorded investment Manufactured housing 1 $ 46 Residential real estate 1 119 Installment 34 420 Total loans 36 $ 585 Loans modified in TDRs were evaluated for impairment. The nature and extent of impairment of TDRs, including those which had experienced a subsequent default, was considered in the determination of an appropriate level of ACL. Credit Quality Indicators The ACL represents management's estimate of expected losses in Customers' loans and leases receivable portfolio, excluding commercial mortgage warehouse loans reported at fair value pursuant to a fair value option election and PPP loans receivable. Commercial and industrial including specialty lending, multifamily, owner occupied commercial real estate, non-owner occupied commercial real estate, and construction loans are rated based on an internally assigned risk rating system which is assigned at the time of loan origination and reviewed on a periodic, or on an “as needed” basis. Residential real estate, manufactured housing and installment loans are evaluated based on the payment activity of the loan. To facilitate the monitoring of credit quality within the commercial and industrial including specialty lending, multifamily, owner occupied commercial real estate, non-owner occupied commercial real estate, and construction loan portfolios, and as an input in the ACL lifetime loss rate model for the commercial and industrial loan portfolio, the Bank utilizes the following categories of risk ratings: pass/satisfactory (includes risk rating 1 through 6), special mention, substandard, doubtful, and loss. The risk rating categories, which are derived from standard regulatory rating definitions, are assigned upon initial approval of credit to borrowers and updated periodically thereafter. Pass ratings, which are assigned to those borrowers who do not have identified potential or well-defined weaknesses and for whom there is a high likelihood of orderly repayment, are updated periodically based on the size and credit characteristics of the borrower. All other categories are updated on a quarterly basis during the month preceding the end of the calendar quarter. While assigning risk ratings involves judgment, the risk-rating process allows management to identify riskier credits in a timely manner and allocate the appropriate resources to manage those loans and leases. The 2022 Form 10-K describes Customers Bancorp’s risk rating grades. Risk ratings are not established for certain consumer loans, including residential real estate, home equity, manufactured housing, and installment loans, mainly because these portfolios consist of a larger number of homogeneous loans with smaller balances. Instead, these portfolios are evaluated for risk mainly based upon aggregate payment history through the monitoring of delinquency levels and trends and are classified as performing and non-performing. The following tables present the credit ratings of loans and leases receivable and current period gross write-offs as of September 30, 2023 and December 31, 2022. Term Loans Amortized Cost Basis by Origination Year as of (amounts in thousands) 2023 2022 2021 2020 2019 Prior Revolving loans amortized cost basis Revolving loans converted to term Total Commercial and industrial loans and leases, including specialty lending: Pass $ 1,031,612 $ 2,268,670 $ 522,684 $ 174,974 $ 168,998 $ 85,084 $ 1,984,328 $ 204,135 $ 6,440,485 Special mention 19,000 3,379 18,923 1,986 — 272 3,088 4,558 51,206 Substandard — 18,462 25,388 27,196 5,854 44,809 4,108 — 125,817 Doubtful — — — — — — — — — Total commercial and industrial loans and leases $ 1,050,612 $ 2,290,511 $ 566,995 $ 204,156 $ 174,852 $ 130,165 $ 1,991,524 $ 208,693 $ 6,617,508 Commercial and industrial loans and leases charge-offs: Three Months Ended September 30, 2023 (1)(2) $ 138 $ 143 $ — $ 8,528 $ — $ 199 $ — $ — $ 9,008 Nine Months Ended September 30, 2023 (1)(2) 138 365 23 8,554 24 496 — — 9,600 Term Loans Amortized Cost Basis by Origination Year as of (amounts in thousands) 2023 2022 2021 2020 2019 Prior Revolving loans amortized cost basis Revolving loans converted to term Total Multifamily loans: Pass $ 778 $ 1,242,054 $ 359,025 $ 128,185 $ 21,610 $ 260,432 $ — $ — $ 2,012,084 Special mention — — — — — 74,509 — — 74,509 Substandard — — 1,480 — — 42,140 — — 43,620 Doubtful — — — — — — — — — Total multifamily loans $ 778 $ 1,242,054 $ 360,505 $ 128,185 $ 21,610 $ 377,081 $ — $ — $ 2,130,213 Multifamily loans charge-offs: Three Months Ended September 30, 2023 $ — $ — $ — $ — $ — $ 1,999 $ — $ — $ 1,999 Nine Months Ended September 30, 2023 — — — — — 3,447 — — 3,447 Commercial real estate owner occupied loans: Pass $ 25,225 $ 257,777 $ 181,397 $ 88,803 $ 82,090 $ 126,363 $ — $ — $ 761,655 Special mention — — 15,477 — — 523 — — 16,000 Substandard — — — — 347 16,813 — — 17,160 Doubtful — — — — — — — — Total commercial real estate owner occupied loans $ 25,225 $ 257,777 $ 196,874 $ 88,803 $ 82,437 $ 143,699 $ — $ — $ 794,815 Commercial real estate owner occupied loans charge-offs: Three Months Ended September 30, 2023 $ — $ — $ — $ — $ — $ 39 $ — $ — $ 39 Nine Months Ended September 30, 2023 — — — — — 39 — — 39 Commercial real estate non-owner occupied loans: Pass $ 3,710 $ 322,767 $ 116,015 $ 151,875 $ 71,562 $ 371,130 $ — $ — $ 1,037,059 Special mention — — — 20,832 17,433 9,209 — — 47,474 Substandard — 10,910 — — 10,679 72,081 — — 93,670 Doubtful — — — — — — — — — Total commercial real estate non-owner occupied loans $ 3,710 $ 333,677 $ 116,015 $ 172,707 $ 99,674 $ 452,420 $ — $ — $ 1,178,203 Commercial real estate non-owner occupied loans charge-offs: Three Months Ended September 30, 2023 $ — $ — $ — $ — $ — $ — $ — $ — $ — Nine Months Ended September 30, 2023 — — — — — 4,527 — — 4,527 Construction loans: Pass $ 20,906 $ 151,144 $ 23,573 $ 1,788 $ 29,298 $ 14,162 $ — $ 11,577 $ 252,448 Special mention 140 — — — — — — — 140 Substandard — — — — — — — — — Doubtful — — — — — — — — — Total construction loans $ 21,046 $ 151,144 $ 23,573 $ 1,788 $ 29,298 $ 14,162 $ — $ 11,577 $ 252,588 Construction loans charge-offs: Three Months Ended September 30, 2023 $ — $ — $ — $ — $ — $ — $ — $ — $ — Nine Months Ended September 30, 2023 — — — — — — — — — Total commercial loans and leases receivable $ 1,101,371 $ 4,275,163 $ 1,263,962 $ 595,639 $ 407,871 $ 1,117,527 $ 1,991,524 $ 220,270 $ 10,973,327 Total commercial loans and leases receivable charge-offs: Three Months Ended September 30, 2023 $ 138 $ 143 $ — $ 8,528 $ — $ 2,237 $ — $ — $ 11,046 Nine Months Ended September 30, 2023 138 365 23 8,554 24 8,509 — — 17,613 Term Loans Amortized Cost Basis by Origination Year as of (amounts in thousands) 2023 2022 2021 2020 2019 Prior Revolving loans amortized cost basis Revolving loans converted to term Total Residential real estate loans: Performing $ 12,592 $ 175,897 $ 134,100 $ 6,519 $ 15,769 $ 72,798 $ 59,589 $ — $ 477,264 Non-performing — 352 819 231 424 3,856 187 — 5,869 Total residential real estate loans $ 12,592 $ 176,249 $ 134,919 $ 6,750 $ 16,193 $ 76,654 $ 59,776 $ — $ 483,133 Residential real estate loans charge-offs: Three Months Ended September 30, 2023 $ — $ — $ — $ — $ — $ 42 $ — $ — $ 42 Nine Months Ended September 30, 2023 — — — — — 69 — — 69 Manufactured housing loans: Performing $ — $ — $ — $ — $ 195 $ 37,013 $ — $ — $ 37,208 Non-performing — — — — — 2,921 — — 2,921 Total manufactured housing loans $ — $ — $ — $ — $ 195 $ 39,934 $ — $ — $ 40,129 Manufactured housing loans charge-offs: Three Months Ended September 30, 2023 $ — $ — $ — $ — $ — $ — $ — $ — $ — Nine Months Ended September 30, 2023 — — — — — — — — — Installment loans: Performing $ 165,527 $ 398,708 $ 212,516 $ 67,474 $ 55,564 $ 5,000 $ 54,232 $ — $ 959,021 Non-performing 1,038 3,565 2,135 352 593 77 115 — 7,875 Total installment loans $ 166,565 $ 402,273 $ 214,651 $ 67,826 $ 56,157 $ 5,077 $ 54,347 $ — $ 966,896 Installment loans charge-offs: Three Months Ended September 30, 2023 $ 1,987 $ 7,222 $ 5,728 $ 1,574 $ 2,078 $ 343 $ — $ — $ 18,932 Nine Months Ended September 30, 2023 5,475 17,041 18,219 4,667 5,544 1,085 — — 52,031 Total consumer loans $ 179,157 $ 578,522 $ 349,570 $ 74,576 $ 72,545 $ 121,665 $ 114,123 $ — $ 1,490,158 Total consumer loans charge-offs: Three Months Ended September 30, 2023 $ 1,987 $ 7,222 $ 5,728 $ 1,574 $ 2,078 $ 385 $ — $ — $ 18,974 Nine Months Ended September 30, 2023 5,475 17,041 18,219 4,667 5,544 1,154 — — 52,100 Loans and leases receivable $ 1,280,528 $ 4,853,685 $ 1,613,532 $ 670,215 $ 480,416 $ 1,239,192 $ 2,105,647 $ 220,270 $ 12,463,485 Loans and leases receivable charge-offs: Three Months Ended September 30, 2023 $ 2,125 $ 7,365 $ 5,728 $ 10,102 $ 2,078 $ 2,622 $ — $ — $ 30,020 Nine Months Ended September 30, 2023 $ 5,613 $ 17,406 $ 18,242 $ 13,221 $ 5,568 $ 9,663 $ — $ — $ 69,713 (1) Excludes $6.2 million of charge-offs for certain PCD loans against $8.7 million of allowance for credit losses on PCD loans recognized upon acquisition of a Venture Banking loan portfolio (included within Specialty Lending) from the FDIC on June 15, 2023. These PCD loans were originated in years 2016 to 2022. (2) Includes $7.0 million of charge-offs for commercial and industrial loans originated under the PPP that were subsequently determined to be ineligible for SBA forgiveness and guarantee and ultimately deemed uncollectible. Term Loans Amortized Cost Basis by Origination Year as of December 31, 2022 (amounts in thousands) 2022 2021 2020 2019 2018 Prior Revolving loans amortized cost basis Revolving loans converted to term Total Commercial and industrial loans and leases, including specialty lending: Pass $ 3,206,250 $ 682,132 $ 242,516 $ 198,866 $ 56,572 $ 83,417 $ 2,066,349 $ — $ 6,536,102 Special mention 11,134 6,023 27,780 — 1,501 172 2,599 — 49,209 Substandard — 22,917 967 8,431 6,713 39,554 8,937 — 87,519 Doubtful — — — — — — — — — Total commercial and industrial loans and leases $ 3,217,384 $ 711,072 $ 271,263 $ 207,297 $ 64,786 $ 123,143 $ 2,077,885 $ — $ 6,672,830 Multifamily loans: Pass $ 1,260,544 $ 364,047 $ 130,656 $ 22,167 $ 112,212 $ 203,215 $ — $ — $ 2,092,841 Special mention — — — — 4,959 50,858 — — 55,817 Substandard — 1,500 — — — 62,861 — — 64,361 Doubtful — — — — — — — — — Total multifamily loans $ 1,260,544 $ 365,547 $ 130,656 $ 22,167 $ 117,171 $ 316,934 $ — $ — $ 2,213,019 Commercial real estate owner occupied loans: Pass $ 293,096 $ 220,515 $ 105,925 $ 90,752 $ 34,196 $ 121,616 $ — $ — $ 866,100 Special mention — — — — 134 1,841 — — 1,975 Substandard — — — 134 10,569 6,561 — — 17,264 Doubtful — — — — — — — — — Total commercial real estate owner occupied loans $ 293,096 $ 220,515 $ 105,925 $ 90,886 $ 44,899 $ 130,018 $ — $ — $ 885,339 Commercial real estate non-owner occupied loans: Pass $ 339,044 $ 119,304 $ 156,281 $ 73,827 $ 62,237 $ 386,235 $ — $ — $ 1,136,928 Special mention — — 21,211 — — 10,617 — — 31,828 Substandard 10,910 — — 28,656 8,198 74,210 — — 121,974 Doubtful — — — — — — — — — Total commercial real estate non-owner occupied loans $ 349,954 $ 119,304 $ 177,492 $ 102,483 $ 70,435 $ 471,062 $ — $ — $ 1,290,730 Construction loans: Pass $ 72,177 $ 36,114 $ 9,537 $ 28,644 $ 4,696 $ 9,112 $ 1,729 $ — $ 162,009 Special mention — — — — — — — — — Substandard — — — — — — — — — Doubtful — — — — — — — — — Total construction loans $ 72,177 $ 36,114 $ 9,537 $ 28,644 $ 4,696 $ 9,112 $ 1,729 $ — $ 162,009 Total commercial loans and leases receivable $ 5,193,155 $ 1,452,552 $ 694,873 $ 451,477 $ 301,987 $ 1,050,269 $ 2,079,614 $ — $ 11,223,927 Residential real estate loans: Performing $ 162,217 $ 148,217 $ 7,224 $ 17,128 $ 10,739 $ 77,762 $ 67,782 $ — $ 491,069 Non-performing 271 366 238 441 1,425 3,357 785 — 6,883 Total residential real estate loans $ 162,488 $ 148,583 $ 7,462 $ 17,569 $ 12,164 $ 81,119 $ 68,567 $ — $ 497,952 Manufactured housing loans: Performing $ — $ — $ — $ 213 $ 103 $ 41,918 $ — $ — 42,234 Non-performing — — — — — 2,842 — — 2,842 Total manufactured housing loans $ — $ — $ — $ 213 $ 103 $ 44,760 $ — $ — $ 45,076 Installment loans: Performing $ 785,699 $ 305,729 $ 100,173 $ 100,570 $ 8,430 $ 782 $ 64,690 $ — $ 1,366,073 Non-performing 5,164 4,356 1,023 1,111 61 59 92 — 11,866 Total installment loans $ 790,863 $ 310,085 $ 101,196 $ 101,681 $ 8,491 $ 841 $ 64,782 $ — $ 1,377,939 Total consumer loans $ 953,351 $ 458,668 $ 108,658 $ 119,463 $ 20,758 $ 126,720 $ 133,349 $ — $ 1,920,967 Loans and leases receivable $ 6,146,506 $ 1,911,220 $ 803,531 $ 570,940 $ 322,745 $ 1,176,989 $ 2,212,963 $ — $ 13,144,894 Loan Purchases and Sales Purchases and sales of loans held for investment were as follows for the three and nine months ended September 30, 2023 and 2022: Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) 2023 2022 2023 2022 Purchases (1) Specialty lending $ — $ — $ 631,252 $ — Other commercial and industrial 4,977 — 15,285 — Commercial real estate owner occupied — — 2,867 — Residential real estate — 15,067 4,238 170,022 Personal installment (2) — 47,778 — 123,785 Other installment (2) 96,758 74,969 96,758 74,969 Total $ 101,735 $ 137,814 $ 750,400 $ 368,776 Sales (3) Specialty lending (4) $ — $ 2,200 $ 287,185 $ 2,200 Other commercial and industrial (5) 6,725 — 54,083 22,880 Multifamily — — — 2,879 Commercial real estate owner occupied (5) 5,671 — 24,522 8,960 Commercial real estate non-

Leases

Leases	9 Months Ended
	Sep. 30, 2023
Leases [Abstract]
Leases	LEASES Lessee Customers has operating leases for its branches, certain LPOs, and administrative offices, with remaining lease terms ranging between three months and ten years. These operating leases comprise substantially all of Customers' obligations in which Customers is the lessee. These lease agreements typically consist of initial lease terms ranging between one As most of Customers' operating leases do not provide an implicit rate, Customers utilized its incremental borrowing rate when determining the present value of lease payments. The following table summarizes operating lease ROU assets and operating lease liabilities and their corresponding balance sheet location: (amounts in thousands) Classification September 30, 2023 December 31, 2022 ASSETS Operating lease ROU assets Other assets $ 16,755 $ 16,133 LIABILITIES Operating lease liabilities Other liabilities $ 19,222 $ 19,046 The following table summarizes operating lease cost and its corresponding income statement location for the periods presented: Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) Classification 2023 2022 2023 2022 Operating lease cost (1) Occupancy expenses $ 1,260 $ 1,137 $ 3,775 $ 3,352 (1) There were no variable lease costs for the three and nine months ended September 30, 2023 and 2022, and sublease income for operating leases was immaterial. Maturities of non-cancelable operating lease liabilities were as follows at September 30, 2023: (amounts in thousands) September 30, 2023 2023 $ 1,334 2024 4,786 2025 3,745 2026 2,977 2027 2,469 Thereafter 5,625 Total minimum payments 20,936 Less: interest 1,714 Present value of lease liabilities $ 19,222 Customers does not have leases where it is involved with the construction or design of an underlying asset. Cash paid pursuant to the operating lease liabilities was $1.3 million and $4.4 million for the three and nine months ended September 30, 2023, respectively. Cash paid pursuant to the operating lease liabilities was $1.2 million and $3.6 million for the three and nine months ended September 30, 2022, respectively. These payments were reported as cash flows used in operating activities in the statement of cash flows. The following table summarizes the weighted average remaining lease term and discount rate for Customers' operating leases at September 30, 2023 and December 31, 2022: September 30, 2023 December 31, 2022 Weighted average remaining lease term (years) Operating leases 5.7 years 5.1 years Weighted average discount rate Operating leases 3.24 % 2.85 % Equipment Lessor CCF is a wholly-owned subsidiary of Customers Bank and is referred to as the Equipment Finance Group. The Equipment Finance Group goes to market through the following origination platforms: vendors, intermediaries, direct and capital markets. The Equipment Finance Group is primarily focused on serving the following segments: transportation, construction (includes crane and utility), marine, franchise, general manufacturing (includes machine tool), helicopter/fixed wing, solar, packaging, plastics and food processing. Lease terms typically range from 24 months to 120 months. The Equipment Finance Group offers the following products: Loans, Capital Lease, PUT, TRAC, Split-TRAC, and FMV. Direct finance equipment leases are included in commercial and industrial loans and leases receivable. The estimated residual values for direct finance and operating leases are established by utilizing internally developed analyses, external studies, and/or third-party appraisals to establish a residual position. For the direct finance leases, only Customers' Split-TRAC leases have residual risk and the unguaranteed portions are typically nominal. Expected credit losses on direct financing leases and the related estimated residual values are included in the ACL on loans and leases. Leased assets under operating leases are carried at amortized cost net of accumulated depreciation, and any impairment charges and are presented in other assets. The depreciation expense of the leased assets is recognized on a straight-line basis over the contractual term of the leases up to the expected residual value. The expected residual value and, accordingly, the monthly depreciation expense, may change throughout the term of the lease. Operating lease rental income for leased assets is recognized in commercial lease income on a straight-line basis over the lease term. Customers periodically reviews its operating leased assets for impairment. An impairment loss is recognized if the carrying amount of the operating leased asset exceeds its fair value and is not recoverable. The carrying amount of operating leased assets is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the lease payments and the estimated residual value upon the eventual disposition of the equipment. The following table summarizes lease receivables and investment in operating leases and their corresponding balance sheet location at September 30, 2023 and December 31, 2022: (amounts in thousands) Classification September 30, 2023 December 31, 2022 ASSETS Direct financing leases Lease receivables Loans and leases receivable $ 175,931 $ 140,182 Guaranteed residual assets Loans and leases receivable 14,211 12,370 Unguaranteed residual assets Loans and leases receivable 9,551 7,555 Deferred initial direct costs Loans and leases receivable 977 667 Unearned income Loans and leases receivable (6,840) (3,404) Net investment in direct financing leases $ 193,830 $ 157,370 Operating leases Investment in operating leases Other assets $ 264,595 $ 248,454 Accumulated depreciation Other assets (72,512) (52,585) Deferred initial direct costs Other assets 1,270 1,461 Net investment in operating leases 193,353 197,330 Total lease assets $ 387,183 $ 354,700 Maturities of operating and direct financing lease receivables were as follows at September 30, 2023: (amounts in thousands) Operating leases Direct financing leases 2023 $ 9,705 $ 11,562 2024 38,612 46,214 2025 34,976 36,992 2026 39,906 29,175 2027 29,824 24,254 Thereafter 69,025 28,840 Total minimum payments $ 222,048 177,037 Less: interest 1,106 Present value of lease receivables $ 175,931
Leases	LEASES Lessee Customers has operating leases for its branches, certain LPOs, and administrative offices, with remaining lease terms ranging between three months and ten years. These operating leases comprise substantially all of Customers' obligations in which Customers is the lessee. These lease agreements typically consist of initial lease terms ranging between one As most of Customers' operating leases do not provide an implicit rate, Customers utilized its incremental borrowing rate when determining the present value of lease payments. The following table summarizes operating lease ROU assets and operating lease liabilities and their corresponding balance sheet location: (amounts in thousands) Classification September 30, 2023 December 31, 2022 ASSETS Operating lease ROU assets Other assets $ 16,755 $ 16,133 LIABILITIES Operating lease liabilities Other liabilities $ 19,222 $ 19,046 The following table summarizes operating lease cost and its corresponding income statement location for the periods presented: Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) Classification 2023 2022 2023 2022 Operating lease cost (1) Occupancy expenses $ 1,260 $ 1,137 $ 3,775 $ 3,352 (1) There were no variable lease costs for the three and nine months ended September 30, 2023 and 2022, and sublease income for operating leases was immaterial. Maturities of non-cancelable operating lease liabilities were as follows at September 30, 2023: (amounts in thousands) September 30, 2023 2023 $ 1,334 2024 4,786 2025 3,745 2026 2,977 2027 2,469 Thereafter 5,625 Total minimum payments 20,936 Less: interest 1,714 Present value of lease liabilities $ 19,222 Customers does not have leases where it is involved with the construction or design of an underlying asset. Cash paid pursuant to the operating lease liabilities was $1.3 million and $4.4 million for the three and nine months ended September 30, 2023, respectively. Cash paid pursuant to the operating lease liabilities was $1.2 million and $3.6 million for the three and nine months ended September 30, 2022, respectively. These payments were reported as cash flows used in operating activities in the statement of cash flows. The following table summarizes the weighted average remaining lease term and discount rate for Customers' operating leases at September 30, 2023 and December 31, 2022: September 30, 2023 December 31, 2022 Weighted average remaining lease term (years) Operating leases 5.7 years 5.1 years Weighted average discount rate Operating leases 3.24 % 2.85 % Equipment Lessor CCF is a wholly-owned subsidiary of Customers Bank and is referred to as the Equipment Finance Group. The Equipment Finance Group goes to market through the following origination platforms: vendors, intermediaries, direct and capital markets. The Equipment Finance Group is primarily focused on serving the following segments: transportation, construction (includes crane and utility), marine, franchise, general manufacturing (includes machine tool), helicopter/fixed wing, solar, packaging, plastics and food processing. Lease terms typically range from 24 months to 120 months. The Equipment Finance Group offers the following products: Loans, Capital Lease, PUT, TRAC, Split-TRAC, and FMV. Direct finance equipment leases are included in commercial and industrial loans and leases receivable. The estimated residual values for direct finance and operating leases are established by utilizing internally developed analyses, external studies, and/or third-party appraisals to establish a residual position. For the direct finance leases, only Customers' Split-TRAC leases have residual risk and the unguaranteed portions are typically nominal. Expected credit losses on direct financing leases and the related estimated residual values are included in the ACL on loans and leases. Leased assets under operating leases are carried at amortized cost net of accumulated depreciation, and any impairment charges and are presented in other assets. The depreciation expense of the leased assets is recognized on a straight-line basis over the contractual term of the leases up to the expected residual value. The expected residual value and, accordingly, the monthly depreciation expense, may change throughout the term of the lease. Operating lease rental income for leased assets is recognized in commercial lease income on a straight-line basis over the lease term. Customers periodically reviews its operating leased assets for impairment. An impairment loss is recognized if the carrying amount of the operating leased asset exceeds its fair value and is not recoverable. The carrying amount of operating leased assets is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the lease payments and the estimated residual value upon the eventual disposition of the equipment. The following table summarizes lease receivables and investment in operating leases and their corresponding balance sheet location at September 30, 2023 and December 31, 2022: (amounts in thousands) Classification September 30, 2023 December 31, 2022 ASSETS Direct financing leases Lease receivables Loans and leases receivable $ 175,931 $ 140,182 Guaranteed residual assets Loans and leases receivable 14,211 12,370 Unguaranteed residual assets Loans and leases receivable 9,551 7,555 Deferred initial direct costs Loans and leases receivable 977 667 Unearned income Loans and leases receivable (6,840) (3,404) Net investment in direct financing leases $ 193,830 $ 157,370 Operating leases Investment in operating leases Other assets $ 264,595 $ 248,454 Accumulated depreciation Other assets (72,512) (52,585) Deferred initial direct costs Other assets 1,270 1,461 Net investment in operating leases 193,353 197,330 Total lease assets $ 387,183 $ 354,700 Maturities of operating and direct financing lease receivables were as follows at September 30, 2023: (amounts in thousands) Operating leases Direct financing leases 2023 $ 9,705 $ 11,562 2024 38,612 46,214 2025 34,976 36,992 2026 39,906 29,175 2027 29,824 24,254 Thereafter 69,025 28,840 Total minimum payments $ 222,048 177,037 Less: interest 1,106 Present value of lease receivables $ 175,931
Leases	LEASES Lessee Customers has operating leases for its branches, certain LPOs, and administrative offices, with remaining lease terms ranging between three months and ten years. These operating leases comprise substantially all of Customers' obligations in which Customers is the lessee. These lease agreements typically consist of initial lease terms ranging between one As most of Customers' operating leases do not provide an implicit rate, Customers utilized its incremental borrowing rate when determining the present value of lease payments. The following table summarizes operating lease ROU assets and operating lease liabilities and their corresponding balance sheet location: (amounts in thousands) Classification September 30, 2023 December 31, 2022 ASSETS Operating lease ROU assets Other assets $ 16,755 $ 16,133 LIABILITIES Operating lease liabilities Other liabilities $ 19,222 $ 19,046 The following table summarizes operating lease cost and its corresponding income statement location for the periods presented: Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) Classification 2023 2022 2023 2022 Operating lease cost (1) Occupancy expenses $ 1,260 $ 1,137 $ 3,775 $ 3,352 (1) There were no variable lease costs for the three and nine months ended September 30, 2023 and 2022, and sublease income for operating leases was immaterial. Maturities of non-cancelable operating lease liabilities were as follows at September 30, 2023: (amounts in thousands) September 30, 2023 2023 $ 1,334 2024 4,786 2025 3,745 2026 2,977 2027 2,469 Thereafter 5,625 Total minimum payments 20,936 Less: interest 1,714 Present value of lease liabilities $ 19,222 Customers does not have leases where it is involved with the construction or design of an underlying asset. Cash paid pursuant to the operating lease liabilities was $1.3 million and $4.4 million for the three and nine months ended September 30, 2023, respectively. Cash paid pursuant to the operating lease liabilities was $1.2 million and $3.6 million for the three and nine months ended September 30, 2022, respectively. These payments were reported as cash flows used in operating activities in the statement of cash flows. The following table summarizes the weighted average remaining lease term and discount rate for Customers' operating leases at September 30, 2023 and December 31, 2022: September 30, 2023 December 31, 2022 Weighted average remaining lease term (years) Operating leases 5.7 years 5.1 years Weighted average discount rate Operating leases 3.24 % 2.85 % Equipment Lessor CCF is a wholly-owned subsidiary of Customers Bank and is referred to as the Equipment Finance Group. The Equipment Finance Group goes to market through the following origination platforms: vendors, intermediaries, direct and capital markets. The Equipment Finance Group is primarily focused on serving the following segments: transportation, construction (includes crane and utility), marine, franchise, general manufacturing (includes machine tool), helicopter/fixed wing, solar, packaging, plastics and food processing. Lease terms typically range from 24 months to 120 months. The Equipment Finance Group offers the following products: Loans, Capital Lease, PUT, TRAC, Split-TRAC, and FMV. Direct finance equipment leases are included in commercial and industrial loans and leases receivable. The estimated residual values for direct finance and operating leases are established by utilizing internally developed analyses, external studies, and/or third-party appraisals to establish a residual position. For the direct finance leases, only Customers' Split-TRAC leases have residual risk and the unguaranteed portions are typically nominal. Expected credit losses on direct financing leases and the related estimated residual values are included in the ACL on loans and leases. Leased assets under operating leases are carried at amortized cost net of accumulated depreciation, and any impairment charges and are presented in other assets. The depreciation expense of the leased assets is recognized on a straight-line basis over the contractual term of the leases up to the expected residual value. The expected residual value and, accordingly, the monthly depreciation expense, may change throughout the term of the lease. Operating lease rental income for leased assets is recognized in commercial lease income on a straight-line basis over the lease term. Customers periodically reviews its operating leased assets for impairment. An impairment loss is recognized if the carrying amount of the operating leased asset exceeds its fair value and is not recoverable. The carrying amount of operating leased assets is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the lease payments and the estimated residual value upon the eventual disposition of the equipment. The following table summarizes lease receivables and investment in operating leases and their corresponding balance sheet location at September 30, 2023 and December 31, 2022: (amounts in thousands) Classification September 30, 2023 December 31, 2022 ASSETS Direct financing leases Lease receivables Loans and leases receivable $ 175,931 $ 140,182 Guaranteed residual assets Loans and leases receivable 14,211 12,370 Unguaranteed residual assets Loans and leases receivable 9,551 7,555 Deferred initial direct costs Loans and leases receivable 977 667 Unearned income Loans and leases receivable (6,840) (3,404) Net investment in direct financing leases $ 193,830 $ 157,370 Operating leases Investment in operating leases Other assets $ 264,595 $ 248,454 Accumulated depreciation Other assets (72,512) (52,585) Deferred initial direct costs Other assets 1,270 1,461 Net investment in operating leases 193,353 197,330 Total lease assets $ 387,183 $ 354,700 Maturities of operating and direct financing lease receivables were as follows at September 30, 2023: (amounts in thousands) Operating leases Direct financing leases 2023 $ 9,705 $ 11,562 2024 38,612 46,214 2025 34,976 36,992 2026 39,906 29,175 2027 29,824 24,254 Thereafter 69,025 28,840 Total minimum payments $ 222,048 177,037 Less: interest 1,106 Present value of lease receivables $ 175,931

Deposits

Deposits	9 Months Ended
	Sep. 30, 2023
Deposit [Abstract]
Deposits	DEPOSITS The components of deposits at September 30, 2023 and December 31, 2022 were as follows: September 30, 2023 December 31, 2022 (amounts in thousands) Demand, non-interest bearing $ 4,758,682 $ 1,885,045 Demand, interest bearing 5,824,410 8,476,027 Savings, including money market deposit accounts 3,617,946 3,546,015 Time 3,994,326 4,249,866 Total deposits $ 18,195,364 $ 18,156,953 The scheduled maturities for time deposits at September 30, 2023 were as follows: (amounts in thousands) September 30, 2023 2023 $ 864,722 2024 2,457,137 2025 165,024 2026 360,201 2027 59,783 Thereafter 87,459 Total time deposits $ 3,994,326 Time deposits greater than the FDIC limit of $250,000 totaled $160.4 million and $85.5 million at September 30, 2023 and December 31, 2022, respectively. Demand deposit overdrafts reclassified as loans were $4.1 million and $3.7 million at September 30, 2023 and December 31, 2022, respectively. At September 30, 2023, the Bank had $591.3 million in state and municipal deposits to which it had pledged $599.4 million of available borrowing capacity through the FHLB to the depositors through a standby letter of credit arrangement.

Borrowings

Borrowings	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Borrowings	BORROWINGS Short-term debt Short-term debt at September 30, 2023 and December 31, 2022 was as follows: September 30, 2023 December 31, 2022 (dollars in thousands) Amount Rate Amount Rate FHLB advances — — % 300,000 4.54 % Total short-term debt $ — $ 300,000 The following is a summary of additional information relating to Customers' short-term debt: (dollars in thousands) September 30, 2023 (1) December 31, 2022 (2) FRB advances (3) Maximum outstanding at any month end $ — $ — Average balance during the period 160,571 — Weighted-average interest rate during the period 5.23 % — % FHLB advances Maximum outstanding at any month end — 775,000 Average balance during the period 116,862 144,918 Weighted-average interest rate during the period 5.16 % 1.07 % Federal funds purchased Maximum outstanding at any month end — 895,000 Average balance during the period 5,055 349,581 Weighted-average interest rate during the period 4.97 % 1.66 % (1) For the nine months ended September 30, 2023. (2) For the year ended December 31, 2022. (3) Includes advances under the BTFP. The BTFP offers loans of up to one year to eligible depository institutions pledging any collateral valued at par, that are eligible for purchase by the Federal Reserve Banks in open market operations, such as U.S. Treasuries, U.S. agency securities, and U.S. agency mortgage-backed securities. At September 30, 2023 and December 31, 2022, Customers Bank had aggregate availability under federal funds lines totaling $1.7 billion. Long-term debt FHLB and FRB advances Long-term FHLB and FRB advances at September 30, 2023 and December 31, 2022 were as follows: September 30, 2023 December 31, 2022 (dollars in thousands) Amount Rate Amount Rate FHLB advances (1)(2) $ 1,529,839 4.43 % $ 500,000 3.37 % Total long-term FHLB and FRB advances $ 1,529,839 $ 500,000 (1) Amounts reported in the above table include variable and fixed rate long-term advances from FHLB of $590.0 million with maturities ranging from June 2024 to September 2026 with a returnable option that can be repaid without penalty on certain predetermined dates at Customers Bank's option, and fixed rate long-term advances of $950.0 million with maturities ranging from March 2025 to March 2028, at September 30, 2023. (2) Includes $10.2 million of unamortized basis adjustments from interest rate swaps designated as fair value hedges of long-term advances from FHLB at September 30, 2023. Refer to NOTE 14 — DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES for additional information. Maturities of long-term FHLB advances were as follows at September 30, 2023: September 30, 2023 (dollars in thousands) Amount (1) Rate 2024 250,000 3.44 % 2025 200,000 4.45 % 2026 540,000 5.54 % 2027 450,000 3.70 % Thereafter 100,000 4.19 % Total long-term FHLB advances $ 1,540,000 (1) Amounts reported in the above table include variable and fixed rate long-term advances from FHLB of $590.0 million with maturities ranging from June 2024 to September 2026 with a returnable option that can be repaid without penalty on certain predetermined dates at Customers Bank's option. The maximum borrowing capacity with the FHLB and FRB at September 30, 2023 and December 31, 2022 was as follows: (amounts in thousands) September 30, 2023 December 31, 2022 Total maximum borrowing capacity with the FHLB $ 3,393,013 $ 3,241,120 Total maximum borrowing capacity with the FRB (1) 5,013,377 2,510,189 Qualifying loans and securities (1) serving as collateral against FHLB and FRB advances 10,050,340 7,142,865 (1) Includes $484.9 million of borrowing capacity available under the BTFP at September 30, 2023, which offers loans of up to one year to eligible depository institutions pledging any collateral valued at par, that are eligible for purchase by the Federal Reserve Banks in open market operations, such as U.S. Treasuries, U.S. agency securities, and U.S. agency mortgage-backed securities. Senior and Subordinated Debt Long-term senior notes and subordinated debt at September 30, 2023 and December 31, 2022 were as follows: September 30, 2023 December 31, 2022 (dollars in thousands) Issued by Ranking Carrying Amount Carrying Amount Rate Issued Amount Date Issued Maturity Price Customers Bancorp Senior (1) $ 98,893 $ 98,788 2.875 % $ 100,000 August 2021 August 2031 100.000 % Customers Bancorp Senior 24,882 24,792 4.500 % 25,000 September 2019 September 2024 100.000 % Total other borrowings $ 123,775 $ 123,580 Customers Bancorp Subordinated (2)(3) $ 72,721 $ 72,585 5.375 % $ 74,750 December 2019 December 2034 100.000 % Customers Bank Subordinated (2)(4) 109,440 109,367 6.125 % 110,000 June 2014 June 2029 100.000 % Total subordinated debt $ 182,161 $ 181,952 (1) The senior notes will bear an annual fixed rate of 2.875% until August 15, 2026. From August 15, 2026 until maturity, the notes will bear an annual interest rate equal to a benchmark rate, which is expected to be the three-month term SOFR after June 30, 2023, plus 235 basis points. Customers Bancorp has the ability to call the senior notes, in whole, or in part, at a redemption price equal to 100% of the principal balance at certain times on or after August 15, 2026. (2) The subordinated notes qualify as Tier 2 capital for regulatory capital purposes. (3) Customers Bancorp has the ability to call the subordinated notes, in whole, or in part, at a redemption price equal to 100% of the principal balance at certain times on or after December 30, 2029. (4) The subordinated notes will bear an annual fixed rate of 6.125% until June 26, 2024. From June 26, 2024 until maturity, the notes will bear an annual interest rate equal to the three-month LIBOR plus 344.3 basis points. Pursuant to the Adjustable Interest Rate (LIBOR) Act enacted by Congress on March 15, 2022, Customers expects that the subordinated notes will substitute three-month term SOFR plus a tenor spread adjustment of 26.161 basis points for three-month LIBOR as the benchmark reference rate in order to calculate the annual interest rate after June 26, 2024. Customers Bank has the ability to call the subordinated notes, in whole, or in part, at a redemption price equal to 100% of the principal balance at certain times on or after June 26, 2024.

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Shareholders' Equity	SHAREHOLDERS’ EQUITY Common Stock On August 25, 2021, the Board of Directors of Customers Bancorp authorized the Share Repurchase Program to repurchase up to 3,235,326 shares of the Company's common stock (representing 10% of the Company’s outstanding shares of common stock on June 30, 2021). Purchases of shares under the Share Repurchase Program may be executed through open market purchases, privately negotiated transactions, through the use of Rule 10b5-1 plans, or otherwise. The exact number of shares, timing for such purchases, and the price and terms at and on which such purchases are to be made were at the discretion of the Company and complied with all applicable regulatory limitations. The term of the Share Repurchase Program was extended to September 27, 2023, unless earlier terminated. Customers Bancorp purchased no shares and 1,379,883 shares of its common stock for $39.8 million under the Share Repurchase Program during the three and nine months ended September 30, 2023, respectively. Customers Bancorp purchased no shares and 664,145 shares of its common stock for $27.8 million under the Share Repurchase Program during the three and nine months ended September 30, 2022, respectively. On September 27, 2023, the Share Repurchase Program expired. Preferred Stock As of September 30, 2023 and December 31, 2022, Customers Bancorp has two series of preferred stock outstanding. The table below summarizes Customers' issuances of preferred stock that remain outstanding at September 30, 2023 and December 31, 2022 and the dividends paid per share. (amounts in thousands except share and per share data) Shares at Carrying value at Initial Fixed Rate Date at which dividend rate becomes floating and earliest redemption date Floating rate of Three-Month LIBOR Plus: Dividend Paid Per Share in 2023 (1) Fixed-to-floating rate: Issue Date September 30, 2023 December 31, 2022 September 30, 2023 December 31, 2022 Series E April 28, 2016 2,300,000 2,300,000 $ 55,593 $ 55,593 6.45 % June 15, 2021 5.140 % $ 1.94 Series F September 16, 2016 3,400,000 3,400,000 82,201 82,201 6.00 % December 15, 2021 4.762 % $ 1.87 Totals 5,700,000 5,700,000 $ 137,794 $ 137,794 (1) For the nine months ended September 30, 2023. Pursuant to the Adjustable Interest Rate (LIBOR) Act enacted by Congress on March 15, 2022, Customers substituted three-month term SOFR plus a tenor spread adjustment of 26.161 basis points for three-month LIBOR as the benchmark reference rate on Series E and F Preferred Stock, plus 5.140% and 4.762%, respectively, beginning with dividends declared on October 25, 2023.

Regulatory Capital

Regulatory Capital	9 Months Ended
	Sep. 30, 2023
Regulatory Capital [Abstract]
Regulatory Capital	REGULATORY CAPITAL The Bank and the Bancorp are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet the minimum capital requirements can result in certain mandatory, and possibly additional discretionary, actions by regulators that, if undertaken, could have a direct material effect on Customers' financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank and the Bancorp must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off-balance sheet items, as calculated under the regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Prompt corrective action provisions are not applicable to bank holding companies. In first quarter 2020, the U.S federal banking regulatory agencies permitted banking organizations to phase-in, for regulatory capital purposes, the day-one impact of the new CECL accounting rule on retained earnings over a period of three years. As part of its response to the impact of COVID-19, on March 31, 2020, the U.S. federal banking regulatory agencies issued an interim final rule that provided the option to temporarily delay certain effects of CECL on regulatory capital for two years, followed by a three-year transition period. The interim final rule allows banking organizations to delay for two years 100% of the day-one impact of adopting CECL and 25% of the cumulative change in the reported allowance for credit losses since adopting CECL. Customers has elected to adopt the interim final rule, which is reflected in the regulatory capital data presented below. The cumulative CECL capital transition impact as of December 31, 2021 which amounted to $61.6 million will be phased in at 25% per year beginning on January 1, 2022 through December 31, 2024. As of September 30, 2023, our regulatory capital ratios reflected 50%, or $30.8 million, benefit associated with the CECL transition provisions. In April 2020, the U.S. federal banking regulatory agencies issued an interim final rule that permits banks to exclude the impact of participating in the SBA PPP program in their regulatory capital ratios. Specifically, PPP loans are zero percent risk weighted and a bank can exclude all PPP loans pledged as collateral to the PPPLF from its average total consolidated assets for purposes of calculating the Tier 1 capital to average assets ratio (i.e. a leverage ratio). Customers applied this regulatory guidance in the calculation of its regulatory capital ratios presented below. Quantitative measures established by regulation to ensure capital adequacy require the Bank and the Bancorp to maintain minimum amounts and ratios (set forth in the following table) of common equity Tier 1, Tier 1, and total capital to risk-weighted assets, and Tier 1 capital to average assets (as defined in the regulations). At September 30, 2023 and December 31, 2022, the Bank and the Bancorp satisfied all capital requirements to which they were subject. Generally, to comply with the regulatory definition of adequately capitalized, or well capitalized, respectively, or to comply with the Basel III capital requirements, an institution must at least maintain the common equity Tier 1, Tier 1 and total risk-based capital ratios and the Tier 1 leverage ratio in excess of the related minimum ratios as set forth in the following table: Minimum Capital Levels to be Classified as: Actual Adequately Capitalized Well Capitalized Basel III Compliant (dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Amount Ratio As of September 30, 2023: Common equity Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,596,157 11.305 % $ 635,353 4.500 % N/A N/A $ 988,327 7.000 % Customers Bank $ 1,830,143 12.974 % $ 634,762 4.500 % $ 916,878 6.500 % $ 987,408 7.000 % Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,733,950 12.281 % $ 847,137 6.000 % N/A N/A $ 1,200,111 8.500 % Customers Bank $ 1,830,143 12.974 % $ 846,349 6.000 % $ 1,128,466 8.000 % $ 1,198,995 8.500 % Total capital (to risk-weighted assets) Customers Bancorp, Inc. $ 2,015,526 14.275 % $ 1,129,516 8.000 % N/A N/A $ 1,482,490 10.500 % Customers Bank $ 2,038,998 14.455 % $ 1,128,466 8.000 % $ 1,410,582 10.000 % $ 1,481,111 10.500 % Tier 1 capital (to average assets) Customers Bancorp, Inc. $ 1,733,950 7.805 % $ 888,675 4.000 % N/A N/A $ 888,675 4.000 % Customers Bank $ 1,830,143 8.246 % $ 887,727 4.000 % $ 1,109,658 5.000 % $ 887,727 4.000 % As of December 31, 2022: Common equity Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,470,837 9.637 % $ 686,838 4.500 % N/A N/A $ 1,068,415 7.000 % Customers Bank $ 1,708,598 11.213 % $ 685,694 4.500 % $ 990,447 6.500 % $ 1,066,636 7.000 % Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,608,630 10.539 % $ 915,784 6.000 % N/A N/A $ 1,297,361 8.500 % Customers Bank $ 1,708,598 11.213 % $ 914,259 6.000 % $ 1,219,012 8.000 % $ 1,295,201 8.500 % Total capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,862,089 12.200 % $ 1,221,045 8.000 % N/A N/A $ 1,602,622 10.500 % Customers Bank $ 1,889,472 12.400 % $ 1,219,012 8.000 % $ 1,523,765 10.000 % $ 1,599,954 10.500 % Tier 1 capital (to average assets) Customers Bancorp, Inc. $ 1,608,630 7.664 % $ 839,547 4.000 % N/A N/A $ 839,547 4.000 % Customers Bank $ 1,708,598 8.150 % $ 838,611 4.000 % $ 1,048,264 5.000 % $ 838,611 4.000 % The Basel III Capital Rules require that we maintain a 2.500% capital conservation buffer with respect to each of common equity Tier 1, Tier 1 and total capital to risk-weighted assets, which provides for capital levels that exceed the minimum risk-based capital adequacy requirements. A financial institution with a conservation buffer of less than the required amount is subject to limitations on capital distributions, including dividend payments and stock repurchases, and certain discretionary bonus payments to executive officers.

Disclosures About Fair Value of

Disclosures About Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Disclosures About Fair Value of Financial Instruments	DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS Customers uses fair value measurements to record fair value adjustments to certain assets and liabilities and to disclose the fair value of its financial instruments. ASC 825, Financial Instruments , requires disclosure of the estimated fair value of an entity’s assets and liabilities considered to be financial instruments. For Customers, as for most financial institutions, the majority of its assets and liabilities are considered to be financial instruments. Many of these instruments lack an available trading market as characterized by a willing buyer and a willing seller engaging in an exchange transaction. For fair value disclosure purposes, Customers utilized certain fair value measurement criteria under ASC 820, Fair Value Measurements and Disclosures ("ASC 820"), as explained below. In accordance with ASC 820, the fair value of a financial instrument is 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. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for Customers' various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument. The fair value guidance provides a consistent definition of fair value, focusing on an exit price in an orderly transaction (that is, not a forced liquidation or distressed sale) between market participants at the measurement date under current market conditions. If there has been a significant decrease in the volume and level of activity for the asset or liability, a change in valuation technique or the use of multiple valuation techniques may be appropriate. In such instances, determining the price at which willing market participants would transact at the measurement date under current market conditions depends on the facts and circumstances and requires the use of significant judgment. The fair value is a reasonable point within the range that is most representative of fair value under current market conditions. The fair value guidance also establishes a fair value hierarchy and describes the following three levels used to classify fair value measurements. Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. Level 2: Quoted prices in markets that are not active, or inputs that are observable either directly or indirectly, for substantially the full term of the asset or liability. Level 3: Prices or valuation techniques that require adjustments to inputs that are both significant to the fair value measurement and unobservable (i.e., supported with little or no market activity). A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The following methods and assumptions were used to estimate the fair values of Customers' financial instruments as of September 30, 2023 and December 31, 2022: Financial Instruments Recorded at Fair Value on a Recurring Basis Investment securities: The fair values of equity securities with a readily determinable fair value, AFS debt securities and debt securities reported at fair value based on a fair value option election are determined by obtaining quoted market prices on nationally recognized and foreign securities exchanges (Level 1), quoted prices in markets that are not active (Level 2), matrix pricing (Level 2), which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted market prices for the specific securities but rather by relying on the securities’ relationship to other benchmark quoted prices, or internally and externally developed models that use unobservable inputs due to limited or no market activity of the instrument (Level 3). When quoted market prices are not available, Customers employs an independent pricing service that utilizes matrix pricing to calculate fair value. Such fair value measurements consider observable data such as dealer quotes, market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayments speeds, credit information, and respective terms and conditions for debt instruments. Management maintains procedures to monitor the pricing service's results and has an established process to challenge their valuations, or methodologies, that appear unusual or unexpected. Customers also utilizes internally and externally developed models that use unobservable inputs due to limited or no market activity of the instrument. These models use unobservable inputs that are inherently judgmental and reflect our best estimates of the assumptions a market participant would use to calculate fair value. Certain unobservable inputs in isolation may have either a directionally consistent or opposite impact on the fair value of the instrument for a given change in that input. When multiple inputs are used within the valuation techniques, a change in one input in a certain direction may be offset by an opposite change from another input. These assets are classified as Level 1, 2 or 3 fair values, based upon the lowest level of input that is significant to the fair value measurements. Loans held for sale - Residential mortgage loans (fair value option): Customers generally estimates the fair values of residential mortgage loans held for sale based on commitments on hand from investors within the secondary market for loans with similar characteristics. These assets are classified as Level 2 fair values, based upon the lowest level of input that is significant to the fair value measurements. Loans held for sale - Consumer other installment loans (fair value option): The fair value of medical installment loans within consumer other installment loans is the amount of cash initially advanced to fund the loan, plus accrued interest and fees, as specified in the agreement with a fintech company, and generally held for up to 90 days prior to sale. These assets are classified as Level 3 fair values, based upon the lowest level of input that is significant to the fair value measurements. Loans receivable - Commercial mortgage warehouse loans (fair value option): The fair value of commercial mortgage warehouse loans is the amount of cash initially advanced to fund the mortgage, plus accrued interest and fees, as specified in the respective agreements. The loan is used by mortgage companies as short-term bridge financing between the funding of the mortgage loans and the finalization of the sale of the loans to an investor. Changes in fair value are not generally expected to be recognized because at inception of the transaction the underlying mortgage loans have already been sold to an approved investor. Additionally, the interest rate is variable, and the transaction is short-term, with an average life of under 30 days from purchase to sale. These assets are classified as Level 2 fair values, based upon the lowest level of input that is significant to the fair value measurements. Derivatives (assets and liabilities): The fair values of interest rate swaps, interest rate caps and credit derivatives are determined using models that incorporate readily observable market data into a market standard methodology. This methodology nets the discounted future cash receipts and the discounted expected cash payments. The discounted variable cash receipts and payments are based on expectations of future interest rates derived from observable market interest rate curves. In addition, fair value is adjusted for the effect of nonperformance risk by incorporating credit valuation adjustments for Customers and its counterparties. These assets and liabilities are classified as Level 2 fair values, based upon the lowest level of input that is significant to the fair value measurements. The fair values of the residential mortgage loan commitments are derived from the estimated fair values that can be generated when the underlying mortgage loan is sold in the secondary market. Customers generally uses commitments on hand from third party investors to estimate an exit price and adjusts for the probability of the commitment being exercised based on Customers' internal experience (i.e., pull-through rate). These assets and liabilities are classified as Level 3 fair values, based upon the lowest level of input that is significant to the fair value measurements. Derivative assets and liabilities are presented in other assets and accrued interest payable and other liabilities on the consolidated balance sheet. Financial Instruments Recorded at Fair Value on a Nonrecurring Basis Collateral-dependent loans: Collateral-dependent loans are those loans that are accounted for under ASC 326, Financial Instruments - Credit Losses ("ASC 326"), in which the Bank has measured impairment generally based on the fair value of the loan’s collateral or DCF analysis. Fair value is generally determined based upon independent third-party appraisals of the properties that collateralize the loans, DCF based upon the expected proceeds, sales agreements or letters of intent with third parties. These assets are generally classified as Level 3 fair values, based upon the lowest level of input that is significant to the fair value measurements. The following information should not be interpreted as an estimate of Customers' fair value in its entirety because fair value calculations are only provided for a limited portion of Customers' assets and liabilities. Due to a wide range of valuation techniques and the degree of subjectivity used in making these estimates, comparisons between Customers' disclosures and those of other companies may not be meaningful. The estimated fair values of Customers' financial instruments at September 30, 2023 and December 31, 2022 were as follows: Fair Value Measurements at September 30, 2023 (amounts in thousands) Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Assets: Cash and cash equivalents $ 3,419,974 $ 3,419,974 $ 3,419,974 $ — $ — Debt securities, available for sale 2,746,728 2,746,728 — 2,704,363 42,365 Debt securities, held to maturity 1,178,370 1,115,576 — 475,388 640,188 Loans held for sale 150,368 150,368 — 1,005 149,363 Total loans and leases receivable, net of allowance for credit losses on loans and leases 13,423,901 13,052,491 — 962,566 12,089,925 FHLB, Federal Reserve Bank, and other restricted stock 126,098 126,098 — 126,098 — Derivatives 28,475 28,475 — 28,421 54 Liabilities: Deposits $ 18,195,364 $ 18,171,737 $ 14,201,038 $ 3,970,699 $ — FHLB advances 1,529,839 1,507,761 — 1,507,761 — Other borrowings 123,775 103,388 — 103,388 — Subordinated debt 182,161 160,712 — 160,712 — Derivatives 41,433 41,433 — 41,433 — Fair Value Measurements at December 31, 2022 (amounts in thousands) Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Assets: Cash and cash equivalents $ 455,806 $ 455,806 $ 455,806 $ — $ — Debt securities, available for sale 2,961,015 2,961,015 — 2,887,749 73,266 Debt securities, held to maturity 840,259 793,813 — 437,680 356,133 Loans held for sale 328,312 328,312 — 322 327,990 Total loans and leases receivable, net of allowance for credit losses on loans and leases 15,335,435 14,890,823 — 1,323,312 13,567,511 FHLB, Federal Reserve Bank, and other restricted stock 74,196 74,196 — 74,196 — Derivatives 44,435 44,435 — 44,380 55 Liabilities: Deposits $ 18,156,953 $ 18,127,338 $ 13,907,087 $ 4,220,251 $ — FHLB advances 800,000 781,113 — 781,113 — Other borrowings 123,580 108,081 — 108,081 — Subordinated debt 181,952 168,441 — 168,441 — Derivatives 42,106 42,106 — 42,106 — For financial assets and liabilities measured at fair value on a recurring and nonrecurring basis, the fair value measurements by level within the fair value hierarchy used at September 30, 2023 and December 31, 2022 were as follows: September 30, 2023 Fair Value Measurements at the End of the Reporting Period Using (amounts in thousands) Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Total Measured at Fair Value on a Recurring Basis: Assets Available for sale debt securities: Asset-backed securities $ — $ 62,351 $ 42,365 $ 104,716 Agency-guaranteed residential collateralized mortgage obligations — 118,469 — 118,469 Collateralized loan obligations — 815,856 — 815,856 Commercial mortgage-backed securities — 131,188 — 131,188 Corporate notes — 578,897 — 578,897 Private label collateralized mortgage obligations — 997,602 — 997,602 Derivatives — 28,421 54 28,475 Loans held for sale – fair value option — 1,005 24,515 25,520 Loans receivable, mortgage warehouse – fair value option — 962,566 — 962,566 Total assets – recurring fair value measurements $ — $ 3,696,355 $ 66,934 $ 3,763,289 Liabilities Derivatives $ — $ 41,433 $ — $ 41,433 Measured at Fair Value on a Nonrecurring Basis: Assets Collateral-dependent loans $ — $ — $ 3,515 $ 3,515 Total assets – nonrecurring fair value measurements $ — $ — $ 3,515 $ 3,515 December 31, 2022 Fair Value Measurements at the End of the Reporting Period Using (amounts in thousands) Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Total Measured at Fair Value on a Recurring Basis: Assets Available for sale debt securities: Asset-backed securities $ — $ 87,276 $ 73,266 $ 160,542 Agency-guaranteed residential collateralized mortgage obligations — 133,864 — 133,864 Collateralized loan obligations — 872,738 — 872,738 Commercial mortgage-backed securities — 136,357 — 136,357 Corporate notes — 595,253 — 595,253 Private label collateralized mortgage obligations — 1,062,261 — 1,062,261 Derivatives — 44,380 55 44,435 Loans held for sale – fair value option — 322 — 322 Loans receivable, mortgage warehouse – fair value option — 1,323,312 — 1,323,312 Total assets – recurring fair value measurements $ — $ 4,255,763 $ 73,321 $ 4,329,084 Liabilities Derivatives $ — $ 42,106 $ — $ 42,106 Measured at Fair Value on a Nonrecurring Basis: Assets Collateral-dependent loans $ — $ — $ 4,819 $ 4,819 Total assets – nonrecurring fair value measurements $ — $ — $ 4,819 $ 4,819 The changes in asset-backed securities (Level 3 assets) measured at fair value on a recurring basis for the three and nine months ended September 30, 2023 and 2022 are summarized in the tables below. Asset-backed securities (amounts in thousands) Three Months Ended September 30, 2023 2022 Balance at July 1 $ 51,825 $ 106,919 Principal payments and premium amortization (10,023) (16,852) Increase in allowance for credit losses (442) — Decrease in allowance for credit losses 250 158 Change in fair value recognized in OCI 755 (2,339) Balance at September 30 $ 42,365 $ 87,886 Asset-backed securities (amounts in thousands) Nine Months Ended September 30, 2023 2022 Balance at January 1 $ 73,266 $ 142,885 Principal payments and premium amortization (31,683) (51,348) Increase in allowance for credit losses (1,488) (253) Decrease in allowance for credit losses 311 — Change in fair value recognized in OCI 1,959 (3,398) Balance at September 30 $ 42,365 $ 87,886 There were no transfers between levels during the three and nine months ended September 30, 2023 and 2022. The following tables summarize financial assets and financial liabilities measured at fair value as of September 30, 2023 and December 31, 2022 on a recurring and nonrecurring basis for which Customers utilized Level 3 inputs to measure fair value. The unobservable Level 3 inputs noted below contain a level of uncertainty that may differ from what is realized in an immediate settlement of the assets. Therefore, Customers may realize a value higher or lower than the current estimated fair value of the assets. Quantitative Information about Level 3 Fair Value Measurements (dollars in thousands) Fair Value Valuation Technique Unobservable Input Range September 30, 2023 Asset-backed securities $ 42,365 Discounted cash flow Discount rate Annualized loss rate Constant prepayment rate 10% - 10% (10%) 3% - 6% (5%) 12% - 30% (25%) Quantitative Information about Level 3 Fair Value Measurements (dollars in thousands) Fair Value Valuation Technique Unobservable Input Range December 31, 2022 Asset-backed securities $ 73,266 Discounted cash flow Discount rate Annualized loss rate Constant prepayment rate 9% - 9% (9%) 4% - 5% (5%) 19% - 25% (23%)

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES Risk Management Objectives of Using Derivatives Customers is exposed to certain risks arising from both its business operations and economic conditions. Customers manages economic risks, including interest rate, liquidity and credit risk, primarily by managing the amount, sources, and durations of its assets and liabilities. Specifically, Customers enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the values of which are determined by interest rates. Customers’ derivative financial instruments are used to manage differences in the amount, timing, and duration of Customers’ known or expected cash receipts and its known or expected cash payments principally related to certain borrowings and deposits. Customers also has interest-rate derivatives resulting from an accommodation provided to certain qualifying customers, and therefore, they are not used to manage Customers’ interest-rate risk in assets or liabilities. Customers manages a matched book with respect to its derivative instruments used in this customer service in order to minimize its net risk exposure resulting from such transactions. Fair Value Hedges of Benchmark Interest-Rate Risk Customers is exposed to changes in the fair value of certain of its fixed rate AFS debt securities, deposits and FHLB advances due to changes in the benchmark interest rate. Customers uses interest rate swaps to manage its exposure to changes in fair value on these instruments attributable to changes in the designated benchmark interest rate such as the Fed Funds Effective Swap Rate. Interest rate swaps designated as fair value hedges of certain fixed rate AFS debt securities involve the payment of fixed-rate amounts to a counterparty in exchange for Customers receiving variable-rate payments over the life of the agreements without the exchange of the underlying notional amount. Interest rate swaps designated as fair value hedges of certain deposits and FHLB advances involve the payment of variable-rate amounts to a counterparty in exchange for Customers receiving fixed-rate payments over the life of the agreements without the exchange of the underlying notional amount. For derivatives designated and that qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in net interest income. At September 30, 2023, Customers had six outstanding interest rate derivatives with notional amounts totaling $472.5 million that were designated as fair value hedges of certain AFS debt securities and FHLB advances. During the nine months ended September 30, 2023, Customers entered into five interest rate derivatives, two of which were terminated with notional amounts totaling $550.0 million that were designated as fair value hedges of certain deposits and FHLB advances resulting in $4.6 million of basis adjustments being amortized over the remaining terms of the hedged items as a reduction in interest expense. During the three and nine months ended September 30, 2022, Customers terminated four and thirteen interest rate derivatives with notional amounts totaling $10.0 million and $58.0 million, respectively, that were designated as fair value hedges together with the sale of hedged AFS debt securities. At December 31, 2022, Customers had three outstanding interest rate derivatives with notional amounts totaling $22.5 million designated as fair value hedges of certain AFS debt securities. As of September 30, 2023 and December 31, 2022, the following amounts were recorded on the consolidated balance sheet related to cumulative basis adjustments for fair value hedges. Amortized Cost Cumulative Amount of Fair Value Hedging Adjustment to Hedged Items (amounts in thousands) September 30, 2023 December 31, 2022 September 30, 2023 December 31, 2022 AFS debt securities $ 22,500 $ 22,500 $ (1,331) $ 1,777 Deposits 300,000 — 1,787 — FHLB advances 700,000 — (10,160) — Derivatives Not Designated as Hedging Instruments Customers executes interest rate swaps (typically the loan customers will swap a floating-rate loan for a fixed-rate loan) and interest rate caps with commercial banking customers to facilitate their respective risk management strategies. The customer interest rate swaps and interest rate caps are simultaneously offset by interest rate swaps and interest rate caps that Customers executes with a third party in order to minimize interest-rate risk exposure resulting from such transactions. As the interest rate swaps and interest rate caps associated with this program do not meet the hedge accounting requirements, changes in the fair value of both the customer swaps and caps and the offsetting third-party market swaps and caps are recognized directly in earnings. At September 30, 2023, Customers had 129 interest rate swaps with an aggregate notional amount of $1.2 billion and 10 interest rate caps with an aggregated notional amount of $179.0 million related to this program. At December 31, 2022, Customers had 141 interest rate swaps with an aggregate notional amount of $1.3 billion and 12 interest rate caps with an aggregate notional amount of $245.8 million related to this program. Customers enters into residential mortgage loan commitments in connection with its consumer mortgage banking activities to fund mortgage loans at specified rates and times in the future. These commitments are short-term in nature and generally expire in 30 to 60 days. The residential mortgage loan commitments that relate to the origination of mortgage loans that will be held for sale are considered derivative instruments under applicable accounting guidance and are reported at fair value, with changes in fair value recorded directly in earnings. At September 30, 2023 and December 31, 2022, Customers had an aggregate notional amount of residential mortgage loan commitments of $2.7 million and $1.5 million, respectively. Customers has also purchased and sold credit derivatives to either hedge or participate in the performance risk associated with some of its counterparties. These derivatives are not designated as hedging instruments and are reported at fair value, with changes in fair value recorded directly in earnings. At September 30, 2023 and December 31, 2022, Customers had an aggregate notional amount of credit derivatives of $97.6 million and $142.0 million, respectively. Fair Value of Derivative Instruments on the Balance Sheet The following tables present the fair value of Customers' derivative financial instruments as well as their presentation on the consolidated balance sheets as of September 30, 2023 and December 31, 2022. September 30, 2023 Derivative Assets Derivative Liabilities (amounts in thousands) Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives not designated as hedging instruments: Interest rate swaps and caps (1) Other assets $ 28,420 Other liabilities $ 41,428 Credit contracts Other assets 1 Other liabilities 5 Residential mortgage loan commitments Other assets 54 Other liabilities — Total $ 28,475 $ 41,433 December 31, 2022 Derivative Assets Derivative Liabilities (amounts in thousands) Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as fair value hedges: Interest rate swaps Other assets $ 1,777 Other liabilities $ — Total $ 1,777 $ — Derivatives not designated as hedging instruments: Interest rate swaps and caps Other assets $ 42,589 Other liabilities $ 42,076 Credit contracts Other assets 14 Other liabilities 30 Residential mortgage loan commitments Other assets 55 Other liabilities — Total $ 42,658 $ 42,106 (1) Customers' centrally cleared derivatives are legally settled through variation margin payments and these payments are reflected as a reduction of the related derivative asset or liability, including accrued interest, on the consolidated balance sheet. Effect of Derivative Instruments on Net Income The following table presents amounts included in the consolidated statements of income related to derivatives designated as fair value hedges and derivatives not designated as hedges for the three and nine months ended September 30, 2023 and 2022. Amount of Income (Loss) Recognized in Earnings Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) Income Statement Location 2023 2022 2023 2022 Derivatives designated as fair value hedges: Recognized on interest rate swaps Net interest income $ 6,377 $ 510 $ 13,209 $ 3,530 Recognized on hedged AFS debt securities Net interest income (196) (510) (446) (3,530) Recognized on hedged FHLB advances Net interest income (6,181) — (12,763) — Total $ — $ — $ — $ — Derivatives not designated as hedging instruments: Interest rate swaps and caps Other non-interest income $ 192 $ 503 $ 332 $ 2,244 Credit contracts Other non-interest income 13 60 12 104 Residential mortgage loan commitments Other non-interest income (13) (57) — (139) Total $ 192 $ 506 $ 344 $ 2,209 Credit-risk-related Contingent Features By entering into derivative contracts, Customers is exposed to credit risk. The credit risk associated with derivatives executed with customers is the same as that involved in extending the related loans and is subject to the same standard credit policies. To mitigate the credit-risk exposure to major derivative dealer counterparties, Customers only enters into agreements with those counterparties that maintain credit ratings of high quality or with central clearing parties. Agreements with major derivative dealer counterparties contain provisions whereby default on any of Customers' indebtedness would be considered a default on its derivative obligations. Customers also has entered into agreements that contain provisions under which the counterparty could require Customers to settle its obligations if Customers fails to maintain its status as a well/adequately capitalized institution. As of September 30, 2023, the fair value of derivatives in a net asset position related to these agreements was $28.4 million. In addition, Customers, which has collateral posting thresholds with certain of these counterparties, had received $30.3 million of cash as collateral at September 30, 2023. Customers records cash posted or received as collateral with these counterparties, except with a central clearing entity, as a reduction or an increase in the outstanding balance of cash and cash equivalents and an increase in the balance of other assets or other liabilities. Disclosures about Offsetting Assets and Liabilities The following tables present derivative instruments that are subject to enforceable master netting arrangements. Customers' interest rate swaps and interest rate caps with institutional counterparties are subject to master netting arrangements and are included in the tables below. Interest rate swaps and interest rate caps with commercial banking customers and residential mortgage loan commitments are not subject to master netting arrangements and are excluded from the tables below. Customers has not made a policy election to offset its derivative positions. Gross Amounts Recognized on the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Net Amount (amounts in thousands) Financial Instruments Cash Collateral Received/Posted September 30, 2023 Interest rate derivative assets with institutional counterparties $ 28,419 $ — $ (28,419) $ — Interest rate derivative liabilities with institutional counterparties $ — $ — $ — $ — Gross Amounts Recognized on the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Net Amount (amounts in thousands) Financial Instruments Cash Collateral Received/Posted December 31, 2022 Interest rate derivative assets with institutional counterparties $ 29,706 $ (619) $ (29,087) $ — Interest rate derivative liabilities with institutional counterparties $ 619 $ (619) $ — $ —

Loss Contingencies

Loss Contingencies	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Loss Contingencies	LOSS CONTINGENCIESLoss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe there are any such matters that will have a material effect on the consolidated financial statements that are not currently accrued for. However, in light of the uncertainties inherent in these matters, it is possible that the ultimate resolution may have a material adverse effect on Customers’ results of operations for a particular period, and future changes in circumstances or additional information could result in accruals or resolution in excess of established accruals, which could adversely affect Customers’ results of operations, potentially materially.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net income	$ 86,756	$ 63,912	$ 188,051	$ 199,323

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Significant Accounting Polici_2

Significant Accounting Policies and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The interim unaudited consolidated financial statements have been prepared in conformity with U.S. GAAP and pursuant to the rules and regulations of the SEC. These interim unaudited consolidated financial statements reflect all normal and recurring adjustments that are, in the opinion of management, necessary to present a fair statement of the financial position and the results of operations and cash flows of Customers Bancorp and subsidiaries for the interim periods presented. Certain information and footnote disclosures normally included in the annual consolidated financial statements have been omitted from these interim unaudited consolidated financial statements as permitted by SEC rules and regulations. The December 31, 2022 consolidated balance sheet presented in this report has been derived from Customers Bancorp’s audited 2022 consolidated financial statements. Management believes that the disclosures are adequate to present fairly the consolidated financial statements as of the dates and for the periods presented. These interim unaudited consolidated financial statements should be read in conjunction with the 2022 consolidated financial statements of Customers Bancorp and subsidiaries included in Customers' Annual Report on Form 10-K for the year ended December 31, 2022 filed with the SEC on February 28, 2023 (the "2022 Form 10-K"). The 2022 Form 10-K describes Customers Bancorp’s significant accounting policies. There have been no material changes to Customers Bancorp's significant accounting policies noted above for the three and nine months ended September 30, 2023.
Recently Issued Accounting Standards and Accounting Standards Issued But Not Yet Adopted	Recently Issued Accounting Standards Presented below are recently issued accounting standards that Customers has adopted as well as those that the FASB has issued but are not yet effective. Accounting Standards Adopted in 2022 Standard Summary of Guidance Effects on Financial Statements ASU 2022-06, Reference Rate Reform (Topic 848) - Deferral of the Sunset Date of Topic 848 and Amendments to the Definition of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate Issued December 2022 • Defers the sunset date of ASC 848 that provides optional guidance for a limited period of time to ease the potential burden in accounting for (or derecognizing the effects of) reference rate reform on financial reporting. Specifically, ASC 848 provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. These relate only to those contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. Certain optional expedients and exceptions in ASC 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition, including derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. • Amends the definition of the SOFR Overnight Index Swap Rate to any rate based on SOFR qualifies as a benchmark interest rate for purposes of applying fair value hedge accounting. • Effective as of December 21, 2022 and ASC 848 can be adopted anytime during the period of January 1, 2020 through December 31, 2024. • Customers adopted the guidance in ASC 848 during the adoption period for certain optional expedients. • The adoption of ASC 848 did not have a material impact on Customers' financial condition, results of operations and consolidated financial statements. • Customers elected to apply optional expedients for certain contract modifications during the three and nine months ended September 30, 2023, which did not have a material impact on Customers' financial condition, results of operations and consolidated financial statements. Customers plans to elect additional optional expedients in the future, which are not expected to have a material impact on Customers' financial condition, results of operations and consolidated financial statements. Accounting Standards Adopted in 2023 Standard Summary of Guidance Effects on Financial Statements ASU 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures Issued March 2022 • Eliminates the accounting guidance for TDRs by creditors, and applies the loan refinancing and restructuring guidance when a borrower is experiencing financial difficulty to determine whether a modification results in a new loan or a continuation of an existing loan. • Provides enhanced disclosure requirements for certain loan refinancing and restructurings and disclosure of current-period gross write-offs by year of origination for financing receivables and net investments in leases within the scope of ASC 326. • Effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period, provided the amendments are adopted as of the beginning of the fiscal year that includes the interim period of adoption. Early adoption is permitted separately for the amendments to TDRs and vintage disclosures. • TDR and vintage disclosures are to be adopted prospectively. An entity may adopt TDR recognition and measurement guidance prospectively or elect to use a modified retrospective transition method, with a cumulative effect adjustment to retained earnings at the beginning of the period of adoption. • Customers adopted this guidance on January 1, 2023 using a modified retrospective transition method for TDR recognition and measurement. • This guidance did not have a material impact on Customers' financial condition, results of operations and consolidated financial statements. • Additional disclosures related to gross write-offs by year of origination and certain loan modifications to borrowers experiencing financial difficulty are presented in NOTE 7 – LOANS AND LEASES RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LEASES. Accounting Standards Issued But Not Yet Adopted Standard Summary of Guidance Effects on Financial Statements ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions Issued June 2022 • Clarifies that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security and not considered in measuring fair value. • Prohibits recognition and measurement of a contractual sale restriction on the sale of an equity security as a separate unit of account. • Provides disclosure requirements for the equity securities subject to contractual sale restrictions. • Effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted for both interim and annual financial statements that have not yet been issued or made available for issuance. • Customers will adopt this guidance on January 1, 2024. This guidance is not expected to have a material impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method Issued March 2023 • Provides an election to account for tax equity investments, regardless of the tax credit program, using the proportional amortization method provided that certain conditions are met. • Customers will adopt this guidance on January 1, 2024. This guidance is not expected to have a material impact on Customers' financial condition, results of operations and consolidated financial statements.
Variable Interest Entity	Customers' transactions with unconsolidated VIEs include sales of consumer installment loans and investments in the securities issued by the VIEs. Customers is not the primary beneficiary of the VIEs because Customers has no right to make decisions that will most significantly affect the economic performance of the VIEs. Customers' continuing involvement with the unconsolidated VIEs is not significant. Customers' continuing involvement is not considered to be significant when Customers only invests in securities issued by the VIE and was not involved in the design of the VIE or when Customers has transferred financial assets to the VIE for only cash consideration. Customers' investments in the securities issued by the VIEs are classified as AFS or HTM debt securities on the consolidated balance sheets, and represent Customers' maximum exposure to loss.
Fair Value Measurement	Customers uses fair value measurements to record fair value adjustments to certain assets and liabilities and to disclose the fair value of its financial instruments. ASC 825, Financial Instruments , requires disclosure of the estimated fair value of an entity’s assets and liabilities considered to be financial instruments. For Customers, as for most financial institutions, the majority of its assets and liabilities are considered to be financial instruments. Many of these instruments lack an available trading market as characterized by a willing buyer and a willing seller engaging in an exchange transaction. For fair value disclosure purposes, Customers utilized certain fair value measurement criteria under ASC 820, Fair Value Measurements and Disclosures ("ASC 820"), as explained below. In accordance with ASC 820, the fair value of a financial instrument is 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. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for Customers' various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument. The fair value guidance provides a consistent definition of fair value, focusing on an exit price in an orderly transaction (that is, not a forced liquidation or distressed sale) between market participants at the measurement date under current market conditions. If there has been a significant decrease in the volume and level of activity for the asset or liability, a change in valuation technique or the use of multiple valuation techniques may be appropriate. In such instances, determining the price at which willing market participants would transact at the measurement date under current market conditions depends on the facts and circumstances and requires the use of significant judgment. The fair value is a reasonable point within the range that is most representative of fair value under current market conditions. The fair value guidance also establishes a fair value hierarchy and describes the following three levels used to classify fair value measurements. Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. Level 2: Quoted prices in markets that are not active, or inputs that are observable either directly or indirectly, for substantially the full term of the asset or liability. Level 3: Prices or valuation techniques that require adjustments to inputs that are both significant to the fair value measurement and unobservable (i.e., supported with little or no market activity). A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.
Derivatives	Risk Management Objectives of Using Derivatives Customers is exposed to certain risks arising from both its business operations and economic conditions. Customers manages economic risks, including interest rate, liquidity and credit risk, primarily by managing the amount, sources, and durations of its assets and liabilities. Specifically, Customers enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the values of which are determined by interest rates. Customers’ derivative financial instruments are used to manage differences in the amount, timing, and duration of Customers’ known or expected cash receipts and its known or expected cash payments principally related to certain borrowings and deposits. Customers also has interest-rate derivatives resulting from an accommodation provided to certain qualifying customers, and therefore, they are not used to manage Customers’ interest-rate risk in assets or liabilities. Customers manages a matched book with respect to its derivative instruments used in this customer service in order to minimize its net risk exposure resulting from such transactions.

Significant Accounting Polici_3

Significant Accounting Policies and Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	Presented below are recently issued accounting standards that Customers has adopted as well as those that the FASB has issued but are not yet effective. Accounting Standards Adopted in 2022 Standard Summary of Guidance Effects on Financial Statements ASU 2022-06, Reference Rate Reform (Topic 848) - Deferral of the Sunset Date of Topic 848 and Amendments to the Definition of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate Issued December 2022 • Defers the sunset date of ASC 848 that provides optional guidance for a limited period of time to ease the potential burden in accounting for (or derecognizing the effects of) reference rate reform on financial reporting. Specifically, ASC 848 provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. These relate only to those contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. Certain optional expedients and exceptions in ASC 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition, including derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. • Amends the definition of the SOFR Overnight Index Swap Rate to any rate based on SOFR qualifies as a benchmark interest rate for purposes of applying fair value hedge accounting. • Effective as of December 21, 2022 and ASC 848 can be adopted anytime during the period of January 1, 2020 through December 31, 2024. • Customers adopted the guidance in ASC 848 during the adoption period for certain optional expedients. • The adoption of ASC 848 did not have a material impact on Customers' financial condition, results of operations and consolidated financial statements. • Customers elected to apply optional expedients for certain contract modifications during the three and nine months ended September 30, 2023, which did not have a material impact on Customers' financial condition, results of operations and consolidated financial statements. Customers plans to elect additional optional expedients in the future, which are not expected to have a material impact on Customers' financial condition, results of operations and consolidated financial statements. Accounting Standards Adopted in 2023 Standard Summary of Guidance Effects on Financial Statements ASU 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures Issued March 2022 • Eliminates the accounting guidance for TDRs by creditors, and applies the loan refinancing and restructuring guidance when a borrower is experiencing financial difficulty to determine whether a modification results in a new loan or a continuation of an existing loan. • Provides enhanced disclosure requirements for certain loan refinancing and restructurings and disclosure of current-period gross write-offs by year of origination for financing receivables and net investments in leases within the scope of ASC 326. • Effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period, provided the amendments are adopted as of the beginning of the fiscal year that includes the interim period of adoption. Early adoption is permitted separately for the amendments to TDRs and vintage disclosures. • TDR and vintage disclosures are to be adopted prospectively. An entity may adopt TDR recognition and measurement guidance prospectively or elect to use a modified retrospective transition method, with a cumulative effect adjustment to retained earnings at the beginning of the period of adoption. • Customers adopted this guidance on January 1, 2023 using a modified retrospective transition method for TDR recognition and measurement. • This guidance did not have a material impact on Customers' financial condition, results of operations and consolidated financial statements. • Additional disclosures related to gross write-offs by year of origination and certain loan modifications to borrowers experiencing financial difficulty are presented in NOTE 7 – LOANS AND LEASES RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LEASES. Accounting Standards Issued But Not Yet Adopted Standard Summary of Guidance Effects on Financial Statements ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions Issued June 2022 • Clarifies that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security and not considered in measuring fair value. • Prohibits recognition and measurement of a contractual sale restriction on the sale of an equity security as a separate unit of account. • Provides disclosure requirements for the equity securities subject to contractual sale restrictions. • Effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted for both interim and annual financial statements that have not yet been issued or made available for issuance. • Customers will adopt this guidance on January 1, 2024. This guidance is not expected to have a material impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method Issued March 2023 • Provides an election to account for tax equity investments, regardless of the tax credit program, using the proportional amortization method provided that certain conditions are met. • Customers will adopt this guidance on January 1, 2024. This guidance is not expected to have a material impact on Customers' financial condition, results of operations and consolidated financial statements.

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Components of Earnings (Loss) Per Share	The following are the components and results of Customers' earnings per common share calculations for the periods presented. Three Months Ended Nine Months Ended (amounts in thousands, except share and per share data) 2023 2022 2023 2022 Net income available to common shareholders $ 82,953 $ 61,364 $ 177,225 $ 192,779 Weighted-average number of common shares outstanding – basic 31,290,581 32,455,814 31,452,700 32,706,652 Share-based compensation plans 884,503 770,793 583,759 1,000,212 Weighted-average number of common shares – diluted 32,175,084 33,226,607 32,036,459 33,706,864 Basic earnings per common share $ 2.65 $ 1.89 $ 5.63 $ 5.89 Diluted earnings per common share 2.58 1.85 5.53 5.72
Anti-dilutive Securities Excluded from Computation of Earnings Per Share	The following are securities that could potentially dilute basic earnings per common share in future periods that were not included in the computation of diluted earnings per common share because either the performance conditions for certain of the share-based compensation awards have not been met or to do so would have been anti-dilutive for the periods presented. Three Months Ended Nine Months Ended 2023 2022 2023 2022 Anti-dilutive securities: Share-based compensation awards 319,973 730,486 685,951 100,707

Changes in Accumulated Other _2

Changes in Accumulated Other Comprehensive Income (Loss) by Component (Tables)	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Changes in Accumulated Other Comprehensive Income (Loss)	The following tables present the changes in accumulated other comprehensive income (loss) by component for the three and nine months ended September 30, 2023 and 2022. Amounts in parentheses indicate reductions to AOCI. Unrealized Gains (Losses) on Available for Sale Securities (1) Three Months Ended September 30, (amounts in thousands) 2023 2022 Balance at July 1 $ (168,176) $ (124,881) Unrealized gains (losses) arising during period, before tax 23,666 (46,450) Income tax effect (6,011) 12,077 Other comprehensive income (loss) before reclassifications 17,655 (34,373) Reclassification adjustments for (gains) losses included in net income, before tax (429) 4,227 Income tax effect 109 (1,099) Amounts reclassified from accumulated other comprehensive income (loss) to net income (320) 3,128 Amortization of unrealized loss on securities transferred from available for sale to held to maturity 1,379 — Income tax effect (350) — Amortization of unrealized loss on securities transferred from available for sale to held to maturity 1,029 — Net current-period other comprehensive income (loss) 18,364 (31,245) Balance at September 30 $ (149,812) $ (156,126) Unrealized Gains (Losses) Available for Sale Securities (1) Nine Months Ended September 30, (amounts in thousands) 2023 2022 Balance at January 1 $ (163,096) $ (4,980) Unrealized gains (losses) arising during period, before tax 14,535 (213,532) Income tax effect (3,692) 55,518 Other comprehensive income (loss) before reclassifications 10,843 (158,014) Reclassification adjustments for (gains) losses included in net income, before tax (429) 9,281 Income tax effect 109 (2,413) Amounts reclassified from accumulated other comprehensive income (loss) to net income (320) 6,868 Amortization of unrealized loss on securities transferred from available for sale to held to maturity 3,700 — Income tax effect (939) — Amortization of unrealized loss on securities transferred from available for sale to held to maturity 2,761 — Net current-period other comprehensive income (loss) 13,284 (151,146) Balance at September 30 $ (149,812) $ (156,126) (1) Reclassification amounts for AFS debt securities are reported as gain (loss) on sale of investment securities and amortization of unrealized losses on debt securities transferred from available-for-sale to held-to-maturity is reported within interest income on the consolidated statements of income.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Summary of Amortized Cost and Approximate Fair Value of Investment Securities and Held to Maturity Securities	The amortized cost, approximate fair value and allowance for credit losses of investment securities at fair value as of September 30, 2023 and December 31, 2022 are summarized as follows: September 30, 2023 (1) (amounts in thousands) Amortized Cost Allowance for Credit Losses Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for sale debt securities: Asset-backed securities $ 111,915 $ (1,755) $ 4 $ (5,448) $ 104,716 Agency-guaranteed residential collateralized mortgage obligations 133,425 — — (14,956) 118,469 Collateralized loan obligations 826,764 — 817 (11,725) 815,856 Commercial mortgage-backed securities 136,111 — — (4,923) 131,188 Corporate notes 638,230 (2,094) 86 (57,325) 578,897 Private label collateralized mortgage obligations 1,064,789 — 687 (67,874) 997,602 Available for sale debt securities $ 2,911,234 $ (3,849) $ 1,594 $ (162,251) 2,746,728 Equity securities (2) 26,479 Total investment securities, at fair value $ 2,773,207 December 31, 2022 (1) (amounts in thousands) Amortized Cost Allowance for Credit Losses Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for sale debt securities: Asset-backed securities $ 169,170 $ (578) $ — $ (8,050) $ 160,542 Agency-guaranteed residential collateralized mortgage obligations 147,481 — — (13,617) 133,864 Collateralized loan obligations 896,992 — 88 (24,342) 872,738 Commercial mortgage-backed securities 142,222 — 1 (5,866) 136,357 Corporate notes 657,086 — 45 (61,878) 595,253 Private label collateralized mortgage obligations 1,125,583 — 308 (63,630) 1,062,261 Available for sale debt securities $ 3,138,534 $ (578) $ 442 $ (177,383) 2,961,015 Equity securities (2) 26,485 Total investment securities, at fair value $ 2,987,500 (1) Accrued interest on AFS debt securities totaled $19.7 million and $16.7 million at September 30, 2023 and December 31, 2022, respectively, and is included in accrued interest receivable on the consolidated balance sheet. (2) Includes perpetual preferred stock issued by domestic banks and domestic bank holding companies and equity securities issued by fintech companies, without a readily determinable fair value, and CRA-qualified mutual fund shares at September 30, 2023 and December 31, 2022. No impairments or measurement adjustments have been recorded on the equity securities without a readily determinable fair value since acquisition. The amortized cost, approximate fair value and allowance for credit losses of investment securities held to maturity as of September 30, 2023 and December 31, 2022 are summarized as follows: September 30, 2023 (1) (amounts in thousands) Amortized Cost Allowance for Credit Losses Net Carrying Value Gross Unrealized Gains Gross Unrealized Losses Fair Value Held to maturity debt securities: Asset-backed securities $ 645,362 $ — $ 645,362 $ — $ (5,174) $ 640,188 Agency-guaranteed residential mortgage-backed securities 7,077 — 7,077 — (1,027) 6,050 Agency-guaranteed commercial mortgage-backed securities 1,870 — 1,870 — (139) 1,731 Agency-guaranteed residential collateralized mortgage obligations 191,469 — 191,469 — (23,331) 168,138 Agency-guaranteed commercial collateralized mortgage obligations 147,414 — 147,414 — (15,848) 131,566 Private label collateralized mortgage obligations 185,178 — 185,178 — (17,275) 167,903 Total held to maturity debt securities $ 1,178,370 $ — $ 1,178,370 $ — $ (62,794) $ 1,115,576 December 31, 2022 (1) (amounts in thousands) Amortized Cost Allowance for Credit Losses Net Carrying Value Gross Unrealized Gains Gross Unrealized Losses Fair Value Held to maturity debt securities: Asset-backed securities $ 361,107 $ — $ 361,107 $ — $ (4,974) $ 356,133 Agency-guaranteed residential mortgage-backed securities 7,189 — 7,189 — (563) 6,626 Agency-guaranteed commercial mortgage-backed securities 1,928 — 1,928 — (104) 1,824 Agency-guaranteed residential collateralized mortgage obligations 204,495 — 204,495 — (18,376) 186,119 Agency-guaranteed commercial collateralized mortgage obligations 151,711 — 151,711 — (9,435) 142,276 Private label collateralized mortgage obligations 113,829 — 113,829 — (12,994) 100,835 Total held to maturity debt securities $ 840,259 $ — $ 840,259 $ — $ (46,446) $ 793,813 (1) Accrued interest on HTM debt securities totaled $2.7 million and $1.0 million at September 30, 2023 and December 31, 2022, respectively, and is included in accrued interest receivable on the consolidated balance sheet.
Gain (Loss) on Securities	The following table presents gross realized gains and realized losses from the sale of AFS debt securities for the three and nine months ended September 30, 2023 and 2022: Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) 2023 2022 2023 2022 Gross realized gains $ — $ — $ — $ 2,563 Gross realized losses (429) (2,135) (429) (8,790) Net realized gains (losses) on sale of available for sale debt securities $ (429) $ (2,135) $ (429) $ (6,227)
Summary of Available-for-Sale and Held to Maturity Debt Securities by Stated Maturity	The following table presents AFS debt securities by stated maturity. Debt securities backed by mortgages and other assets have expected maturities that differ from contractual maturities because borrowers have the right to call or prepay and, therefore, these debt securities are classified separately with no specific maturity date: September 30, 2023 (amounts in thousands) Amortized Fair Due in one year or less $ 7,500 $ 7,444 Due after one year through five years 532,269 488,929 Due after five years through ten years 98,461 82,524 Asset-backed securities 111,915 104,716 Agency-guaranteed residential collateralized mortgage obligations 133,425 118,469 Collateralized loan obligations 826,764 815,856 Commercial mortgage-backed securities 136,111 131,188 Private label collateralized mortgage obligations 1,064,789 997,602 Total available for sale debt securities $ 2,911,234 $ 2,746,728 The following table presents HTM debt securities by stated maturity, including debt securities backed by mortgages and other assets with expected maturities that differ from contractual maturities because borrowers have the right to call or prepay and, therefore, are classified separately with no specific maturity date: September 30, 2023 (amounts in thousands) Amortized Fair Asset-backed securities $ 645,362 $ 640,188 Agency-guaranteed residential mortgage-backed securities 7,077 6,050 Agency-guaranteed commercial mortgage-backed securities 1,870 1,731 Agency-guaranteed residential collateralized mortgage obligations 191,469 168,138 Agency-guaranteed commercial collateralized mortgage obligations 147,414 131,566 Private label collateralized mortgage obligations 185,178 167,903 Total held to maturity debt securities $ 1,178,370 $ 1,115,576
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value	Gross unrealized losses and fair value of Customers' AFS debt securities for which an allowance for credit losses has not been recorded, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2023 and December 31, 2022 were as follows: September 30, 2023 Less Than 12 Months 12 Months or More Total (amounts in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available for sale debt securities: Asset-backed securities $ — $ — $ 42,932 $ (2,547) $ 42,932 $ (2,547) Agency-guaranteed residential collateralized mortgage obligations — — 133,425 (14,956) 133,425 (14,956) Collateralized loan obligations 46,333 (1,472) 614,978 (10,253) 661,311 (11,725) Commercial mortgage-backed securities — — 134,866 (4,923) 134,866 (4,923) Corporate notes 84,827 (3,106) 469,187 (45,202) 554,014 (48,308) Private label collateralized mortgage obligations 154,078 (10,605) 674,943 (57,269) 829,021 (67,874) Total $ 285,238 $ (15,183) $ 2,070,331 $ (135,150) $ 2,355,569 $ (150,333) December 31, 2022 Less Than 12 Months 12 Months or More Total (amounts in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available for sale debt securities: Asset-backed securities $ 160,542 $ (8,050) $ — $ — $ 160,542 $ (8,050) Agency-guaranteed residential collateralized mortgage obligations 133,864 (13,617) — — 133,864 (13,617) Collateralized loan obligations 386,701 (13,516) 315,270 (10,826) 701,971 (24,342) Commercial mortgage-backed securities 39,828 (1,410) 93,005 (4,456) 132,833 (5,866) Corporate notes 386,464 (36,119) 178,955 (25,759) 565,419 (61,878) Private label collateralized mortgage obligations 478,096 (29,364) 314,332 (34,266) 792,428 (63,630) Total $ 1,585,495 $ (102,076) $ 901,562 $ (75,307) $ 2,487,057 $ (177,383)
Debt Securities, Available-for-sale, Allowance for Credit Loss	The following tables present the activity in the allowance for credit losses on AFS debt securities, by major security type, for the periods presented: Three Months Ended September 30, 2023 2022 (amounts in thousands) Asset-backed securities Corporate notes Total Asset-backed securities Corporate notes Total Balance at July 1 $ 1,563 $ 1,876 $ 3,439 $ 411 $ — $ 411 Credit losses on securities for which credit losses were not previously recorded — 564 564 — — — Credit losses on previously impaired securities 442 69 511 — — — Decrease in allowance for credit losses on previously impaired securities (250) (24) (274) (158) — (158) Reduction due to sales — (391) (391) — — — Balance at September 30 $ 1,755 $ 2,094 $ 3,849 $ 253 $ — $ 253 Nine Months Ended September 30, 2023 2022 (amounts in thousands) Asset-backed securities Corporate notes Total Asset-backed securities Corporate notes Total Balance at January 1 $ 578 $ — $ 578 $ — $ — $ — Credit losses on securities for which credit losses were not previously recorded — 2,485 2,485 253 — 253 Credit losses on previously impaired securities 1,488 — 1,488 — — — Decrease in allowance for credit losses on previously impaired securities (311) — (311) — — — Reduction due to sales — (391) (391) — — — Balance at September 30 $ 1,755 $ 2,094 $ 3,849 $ 253 $ — $ 253
Debt Securities, Held-to-Maturity, Credit Quality Indicator	The following table presents the amortized cost of HTM debt securities based on their lowest credit rating available: September 30, 2023 (amounts in thousands) AAA AA A Not Rated Total Held to maturity debt securities: Asset-backed securities $ — $ — $ — $ 645,362 $ 645,362 Agency-guaranteed residential mortgage-backed securities — — — 7,077 7,077 Agency-guaranteed commercial mortgage-backed securities — — — 1,870 1,870 Agency-guaranteed residential collateralized mortgage obligations — — — 191,469 191,469 Agency-guaranteed commercial collateralized mortgage obligations — — — 147,414 147,414 Private label collateralized mortgage obligations 67,528 18,234 25,920 73,496 185,178 Total held to maturity debt securities $ 67,528 $ 18,234 $ 25,920 $ 1,066,688 $ 1,178,370

Loans Held for Sale (Tables)

Loans Held for Sale (Tables)	9 Months Ended
	Sep. 30, 2023
Receivable, Held-for-Sale [Abstract]
Composition of Loans Held for Sale	The composition of loans held for sale as of September 30, 2023 and December 31, 2022 was as follows: (amounts in thousands) September 30, 2023 December 31, 2022 Commercial loans: Multifamily loans, at lower of cost or fair value $ — $ 4,079 Total commercial loans held for sale — 4,079 Consumer loans: Home equity conversion mortgages, at lower of cost or fair value — 507 Residential mortgage loans, at fair value 1,005 322 Personal installment loans, at lower of cost or fair value 124,848 133,801 Other installment loans, at lower of cost or fair value — 189,603 Other installment loans, at fair value 24,515 — Total consumer loans held for sale 150,368 324,233 Loans held for sale $ 150,368 $ 328,312

Loans and Leases Receivable a_2

Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases (Tables)	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Schedule of Loans and Leases Receivable	The following table presents loans and leases receivable as of September 30, 2023 and December 31, 2022. (amounts in thousands) September 30, 2023 December 31, 2022 Loans and leases receivable, mortgage warehouse, at fair value $ 962,566 $ 1,323,312 Loans receivable, PPP 137,063 998,153 Loans and leases receivable: Commercial: Commercial and industrial: Specialty lending (1) 5,422,161 5,412,887 Other commercial and industrial 1,195,347 1,259,943 Multifamily 2,130,213 2,213,019 Commercial real estate owner occupied 794,815 885,339 Commercial real estate non-owner occupied 1,178,203 1,290,730 Construction 252,588 162,009 Total commercial loans and leases receivable 10,973,327 11,223,927 Consumer: Residential real estate 483,133 497,952 Manufactured housing 40,129 45,076 Installment: Personal 629,843 964,641 Other 337,053 413,298 Total consumer loans receivable 1,490,158 1,920,967 Loans and leases receivable 12,463,485 13,144,894 Allowance for credit losses on loans and leases (139,213) (130,924) Total loans and leases receivable, net of allowance for credit losses on loans and leases (2) $ 13,423,901 $ 15,335,435 (1) Includes direct finance equipment leases of $193.8 million and $157.4 million at September 30, 2023 and December 31, 2022, respectively. (2) Includes deferred (fees) costs and unamortized (discounts) premiums, net of $(35.8) million and $(21.5) million at September 30, 2023 and December 31, 2022, respectively.
Loans and Leases Receivable by Loan Type and Performance Status	The following tables summarize loans and leases receivable by loan and lease type and performance status as of September 30, 2023 and December 31, 2022: September 30, 2023 (amounts in thousands) 30-59 Days past due (1) 60-89 Days past due (1) 90 Days or more past due (2) Total past due Loans and leases not past due (3)(4) Total loans and leases (4) Commercial and industrial, including specialty lending $ 2,070 $ 1,273 $ 5,290 $ 8,633 $ 6,608,875 $ 6,617,508 Multifamily — — — — 2,130,213 2,130,213 Commercial real estate owner occupied 50 3,234 7,392 10,676 784,139 794,815 Commercial real estate non-owner occupied — — — — 1,178,203 1,178,203 Construction — — — — 252,588 252,588 Residential real estate 3,773 2,898 3,831 10,502 472,631 483,133 Manufactured housing 673 367 3,207 4,247 35,882 40,129 Installment 9,728 7,444 7,299 24,471 942,425 966,896 Total $ 16,294 $ 15,216 $ 27,019 $ 58,529 $ 12,404,956 $ 12,463,485 December 31, 2022 (amounts in thousands) 30-59 Days past due (1) 60-89 Days past due (1) 90 Days or more past due (2) Total past due Loans and leases not past due (3) Total loans and leases (4) Commercial and industrial, including specialty lending $ 3,123 $ 717 $ 1,415 $ 5,255 $ 6,667,575 $ 6,672,830 Multifamily 10,684 5,217 1,143 17,044 2,195,975 2,213,019 Commercial real estate owner occupied 5,173 — 2,704 7,877 877,462 885,339 Commercial real estate non-owner occupied 2,136 — 11 2,147 1,288,583 1,290,730 Construction — — — — 162,009 162,009 Residential real estate 5,208 1,157 3,158 9,523 488,429 497,952 Manufactured housing 901 537 3,346 4,784 40,292 45,076 Installment 11,246 7,942 9,527 28,715 1,349,224 1,377,939 Total $ 38,471 $ 15,570 $ 21,304 $ 75,345 $ 13,069,549 $ 13,144,894 (1) Includes past due loans and leases that are accruing interest because collection is considered probable. (2) Includes loans amounting to $0.6 million and $1.9 million as of September 30, 2023 and December 31, 2022, respectively, that are still accruing interest because collection is considered probable. (3) Loans and leases where next payment due is less than 30 days from the report date. The tables exclude PPP loans of $137.1 million, of which $1.3 million were 30-59 days past due and $106.9 million were 60 days or more past due as of September 30, 2023, and PPP loans of $998.2 million, of which $0.6 million were 30-59 days past due and $36.0 million were 60 days or more past due as of December 31, 2022. Claims for guarantee payments are submitted to the SBA for eligible PPP loans that are more than 60 days past due. (4) Includes PCD loans of $195.8 million and $8.3 million at September 30, 2023 and December 31, 2022, respectively. On June 15, 2023, Customers acquired $631.0 million of Venture Banking loan portfolio (included within Specialty Lending above) from the FDIC, which included $228.7 million of PCD loans.
Amortized cost of Loans and Leases on Nonaccrual Status	The following table presents the amortized cost of loans and leases held for investment on nonaccrual status. September 30, 2023 (1) December 31, 2022 (1) (amounts in thousands) Nonaccrual loans with no related allowance Nonaccrual loans with related allowance Total nonaccrual loans Nonaccrual loans with no related allowance Nonaccrual loans with related allowance Total nonaccrual loans Commercial and industrial, including specialty lending $ 3,297 $ 2,470 $ 5,767 $ 1,731 $ 30 $ 1,761 Multifamily — — — 1,143 — 1,143 Commercial real estate owner occupied 7,442 — 7,442 2,768 — 2,768 Residential real estate 6,441 118 6,559 6,922 — 6,922 Manufactured housing — 2,582 2,582 — 2,410 2,410 Installment — 7,299 7,299 — 9,527 9,527 Total $ 17,180 $ 12,469 $ 29,649 $ 12,564 $ 11,967 $ 24,531 (1) Presented at amortized cost basis.
Schedule of Allowance for Credit Losses on Loans and Leases	The changes in the ACL on loans and leases by loan and lease type for the three and nine months ended September 30, 2023 and 2022 are presented in the tables below. (amounts in thousands) Commercial and industrial (1) Multifamily Commercial real estate owner occupied Commercial real estate non-owner occupied Construction Residential real estate Manufactured housing Installment Total Three Months Ended Ending Balance, $ 29,092 $ 15,400 $ 10,215 $ 13,495 $ 2,639 $ 6,846 $ 4,338 $ 57,631 $ 139,656 Charge-offs (9,008) (1,999) (39) — — (42) — (18,932) (30,020) Recoveries 6,034 — — — — 29 — 6,459 12,522 Provision (benefit) for credit losses on loans and leases (1,132) 2,469 187 2,324 491 (31) (258) 13,005 17,055 Ending Balance, $ 24,986 $ 15,870 $ 10,363 $ 15,819 $ 3,130 $ 6,802 $ 4,080 $ 58,163 $ 139,213 Nine Months Ended Ending Balance, $ 17,582 $ 14,541 $ 6,454 $ 11,219 $ 1,913 $ 6,094 $ 4,430 $ 68,691 $ 130,924 Allowance for credit losses on FDIC PCD loans, net of charge-offs (2) 2,576 — — — — — — — 2,576 Charge-offs (9,600) (3,447) (39) (4,527) — (69) — (52,031) (69,713) Recoveries 6,439 — 34 27 116 34 — 11,350 18,000 Provision (benefit) for credit losses on loans and leases 7,989 4,776 3,914 9,100 1,101 743 (350) 30,153 57,426 Ending Balance, $ 24,986 $ 15,870 $ 10,363 $ 15,819 $ 3,130 $ 6,802 $ 4,080 $ 58,163 $ 139,213 (amounts in thousands) Commercial and industrial (1) Multifamily Commercial real estate owner occupied Commercial real estate non-owner occupied Construction Residential real estate Manufactured housing Installment Total Three Months Ended Ending Balance, $ 11,081 $ 9,765 $ 4,745 $ 8,880 $ 1,179 $ 5,578 $ 4,080 $ 111,222 $ 156,530 Charge-offs (2,657) — — (4,862) — — — (13,965) (21,484) Recoveries 76 — — 31 10 13 — 2,857 2,987 Provision (benefit) for credit losses on loans and leases 6,631 4,479 1,475 7,283 425 (138) 402 (28,393) (7,836) Ending Balance, $ 15,131 $ 14,244 $ 6,220 $ 11,332 $ 1,614 $ 5,453 $ 4,482 $ 71,721 $ 130,197 Nine Months Ended Ending Balance, $ 12,702 $ 4,477 $ 3,213 $ 6,210 $ 692 $ 2,383 $ 4,278 $ 103,849 $ 137,804 Charge-offs (3,235) (1,990) — (5,025) — (4) — (35,681) (45,935) Recoveries 1,129 337 49 43 226 58 — 4,889 6,731 Provision (benefit) for credit losses on loans and leases 4,535 11,420 2,958 10,104 696 3,016 204 (1,336) 31,597 Ending Balance, $ 15,131 $ 14,244 $ 6,220 $ 11,332 $ 1,614 $ 5,453 $ 4,482 $ 71,721 $ 130,197 (1) Includes Specialty Lending. (2) Represents $8.7 million of allowance for credit losses on PCD loans recognized upon acquisition of a Venture Banking loan portfolio (included within Specialty Lending) from the FDIC on June 15, 2023, net of $6.2 million of charge-offs for certain of these PCD loans upon acquisition.
Summary of Loans Modified in Troubled Debt Restructurings and Related Recorded Investment	The following table presents the amortized cost of loans that were modified to borrowers experiencing financial difficulty for the three and nine months ended September 30, 2023, disaggregated by class of financing receivable and type of modification granted. Three Months Ended September 30, 2023 (dollars in thousands) Term Extension Payment Deferral Debt Forgiveness Interest Rate Reduction and Term Extension Total Percentage of Total by Financing Class Manufactured housing $ — $ — $ — $ 99 $ 99 0.25 % Personal installment 3,863 210 28 — 4,101 0.42 % Total $ 3,863 $ 210 $ 28 $ 99 $ 4,200 Nine Months Ended September 30, 2023 (dollars in thousands) Term Extension Payment Deferral Debt Forgiveness Interest Rate Reduction and Term Extension Total Percentage of Total by Financing Class Commercial real estate owner occupied $ 169 $ — $ — $ — $ 169 0.02 % Manufactured housing 6 — — 113 119 0.30 % Personal installment 10,910 442 222 — 11,574 1.20 % Total $ 11,085 $ 442 $ 222 $ 113 $ 11,862 The following table summarizes the impacts of loan modifications made to borrowers experiencing financial difficulty for the three and nine months ended September 30, 2023. Three Months Ended September 30, 2023 Weighted Average (dollars in thousands) Interest Rate Reduction (%) Term Extension Payment Deferral Debt Forgiven Manufactured housing 4.4% 31 0 $ — Personal installment — 6 6 20 Nine Months Ended September 30, 2023 Weighted Average (dollars in thousands) Interest Rate Reduction (%) Term Extension Payment Deferral Debt Forgiven Commercial real estate owner occupied — % 4 0 $ — Manufactured housing 4.3 30 0 — Personal installment — 6 6 183 The performance of loans made to borrowers experiencing financial difficulty in which modifications were made is closely monitored to understand the effectiveness of modification efforts. Loans are considered to be in payment default at 90 days or more past due. The following table presents an aging analysis of loan modifications made to borrowers experiencing financial difficulty during the nine months ended September 30, 2023. September 30, 2023 (dollars in thousands) 30-59 Days past due 60-89 Days past due 90 Days or more past due Current Total Commercial real estate owner occupied $ — $ — $ 169 $ — $ 169 Manufactured housing — — — 119 119 Personal installment 837 565 354 9,820 11,576 Total $ 837 $ 565 $ 523 $ 9,939 $ 11,864 Three Months Ended September 30, 2022 Nine Months Ended September 30, 2022 (dollars in thousands) Number of loans Recorded investment Number of loans Recorded investment Interest-rate reductions — $ — 14 $ 470 Other (1) 71 739 170 1,933 Total 71 $ 739 184 $ 2,403
Financing Receivable, Modified, Subsequent Default	The following table presents, by loan type, the number of loans modified in TDRs and the related recorded investment, for which there was a payment default within twelve months following the modification. September 30, 2022 (dollars in thousands) Number of loans Recorded investment Manufactured housing 1 $ 46 Residential real estate 1 119 Installment 34 420 Total loans 36 $ 585
Credit Ratings of Covered and Non-Covered Loan Portfolio	The following tables present the credit ratings of loans and leases receivable and current period gross write-offs as of September 30, 2023 and December 31, 2022. Term Loans Amortized Cost Basis by Origination Year as of (amounts in thousands) 2023 2022 2021 2020 2019 Prior Revolving loans amortized cost basis Revolving loans converted to term Total Commercial and industrial loans and leases, including specialty lending: Pass $ 1,031,612 $ 2,268,670 $ 522,684 $ 174,974 $ 168,998 $ 85,084 $ 1,984,328 $ 204,135 $ 6,440,485 Special mention 19,000 3,379 18,923 1,986 — 272 3,088 4,558 51,206 Substandard — 18,462 25,388 27,196 5,854 44,809 4,108 — 125,817 Doubtful — — — — — — — — — Total commercial and industrial loans and leases $ 1,050,612 $ 2,290,511 $ 566,995 $ 204,156 $ 174,852 $ 130,165 $ 1,991,524 $ 208,693 $ 6,617,508 Commercial and industrial loans and leases charge-offs: Three Months Ended September 30, 2023 (1)(2) $ 138 $ 143 $ — $ 8,528 $ — $ 199 $ — $ — $ 9,008 Nine Months Ended September 30, 2023 (1)(2) 138 365 23 8,554 24 496 — — 9,600 Term Loans Amortized Cost Basis by Origination Year as of (amounts in thousands) 2023 2022 2021 2020 2019 Prior Revolving loans amortized cost basis Revolving loans converted to term Total Multifamily loans: Pass $ 778 $ 1,242,054 $ 359,025 $ 128,185 $ 21,610 $ 260,432 $ — $ — $ 2,012,084 Special mention — — — — — 74,509 — — 74,509 Substandard — — 1,480 — — 42,140 — — 43,620 Doubtful — — — — — — — — — Total multifamily loans $ 778 $ 1,242,054 $ 360,505 $ 128,185 $ 21,610 $ 377,081 $ — $ — $ 2,130,213 Multifamily loans charge-offs: Three Months Ended September 30, 2023 $ — $ — $ — $ — $ — $ 1,999 $ — $ — $ 1,999 Nine Months Ended September 30, 2023 — — — — — 3,447 — — 3,447 Commercial real estate owner occupied loans: Pass $ 25,225 $ 257,777 $ 181,397 $ 88,803 $ 82,090 $ 126,363 $ — $ — $ 761,655 Special mention — — 15,477 — — 523 — — 16,000 Substandard — — — — 347 16,813 — — 17,160 Doubtful — — — — — — — — Total commercial real estate owner occupied loans $ 25,225 $ 257,777 $ 196,874 $ 88,803 $ 82,437 $ 143,699 $ — $ — $ 794,815 Commercial real estate owner occupied loans charge-offs: Three Months Ended September 30, 2023 $ — $ — $ — $ — $ — $ 39 $ — $ — $ 39 Nine Months Ended September 30, 2023 — — — — — 39 — — 39 Commercial real estate non-owner occupied loans: Pass $ 3,710 $ 322,767 $ 116,015 $ 151,875 $ 71,562 $ 371,130 $ — $ — $ 1,037,059 Special mention — — — 20,832 17,433 9,209 — — 47,474 Substandard — 10,910 — — 10,679 72,081 — — 93,670 Doubtful — — — — — — — — — Total commercial real estate non-owner occupied loans $ 3,710 $ 333,677 $ 116,015 $ 172,707 $ 99,674 $ 452,420 $ — $ — $ 1,178,203 Commercial real estate non-owner occupied loans charge-offs: Three Months Ended September 30, 2023 $ — $ — $ — $ — $ — $ — $ — $ — $ — Nine Months Ended September 30, 2023 — — — — — 4,527 — — 4,527 Construction loans: Pass $ 20,906 $ 151,144 $ 23,573 $ 1,788 $ 29,298 $ 14,162 $ — $ 11,577 $ 252,448 Special mention 140 — — — — — — — 140 Substandard — — — — — — — — — Doubtful — — — — — — — — — Total construction loans $ 21,046 $ 151,144 $ 23,573 $ 1,788 $ 29,298 $ 14,162 $ — $ 11,577 $ 252,588 Construction loans charge-offs: Three Months Ended September 30, 2023 $ — $ — $ — $ — $ — $ — $ — $ — $ — Nine Months Ended September 30, 2023 — — — — — — — — — Total commercial loans and leases receivable $ 1,101,371 $ 4,275,163 $ 1,263,962 $ 595,639 $ 407,871 $ 1,117,527 $ 1,991,524 $ 220,270 $ 10,973,327 Total commercial loans and leases receivable charge-offs: Three Months Ended September 30, 2023 $ 138 $ 143 $ — $ 8,528 $ — $ 2,237 $ — $ — $ 11,046 Nine Months Ended September 30, 2023 138 365 23 8,554 24 8,509 — — 17,613 Term Loans Amortized Cost Basis by Origination Year as of (amounts in thousands) 2023 2022 2021 2020 2019 Prior Revolving loans amortized cost basis Revolving loans converted to term Total Residential real estate loans: Performing $ 12,592 $ 175,897 $ 134,100 $ 6,519 $ 15,769 $ 72,798 $ 59,589 $ — $ 477,264 Non-performing — 352 819 231 424 3,856 187 — 5,869 Total residential real estate loans $ 12,592 $ 176,249 $ 134,919 $ 6,750 $ 16,193 $ 76,654 $ 59,776 $ — $ 483,133 Residential real estate loans charge-offs: Three Months Ended September 30, 2023 $ — $ — $ — $ — $ — $ 42 $ — $ — $ 42 Nine Months Ended September 30, 2023 — — — — — 69 — — 69 Manufactured housing loans: Performing $ — $ — $ — $ — $ 195 $ 37,013 $ — $ — $ 37,208 Non-performing — — — — — 2,921 — — 2,921 Total manufactured housing loans $ — $ — $ — $ — $ 195 $ 39,934 $ — $ — $ 40,129 Manufactured housing loans charge-offs: Three Months Ended September 30, 2023 $ — $ — $ — $ — $ — $ — $ — $ — $ — Nine Months Ended September 30, 2023 — — — — — — — — — Installment loans: Performing $ 165,527 $ 398,708 $ 212,516 $ 67,474 $ 55,564 $ 5,000 $ 54,232 $ — $ 959,021 Non-performing 1,038 3,565 2,135 352 593 77 115 — 7,875 Total installment loans $ 166,565 $ 402,273 $ 214,651 $ 67,826 $ 56,157 $ 5,077 $ 54,347 $ — $ 966,896 Installment loans charge-offs: Three Months Ended September 30, 2023 $ 1,987 $ 7,222 $ 5,728 $ 1,574 $ 2,078 $ 343 $ — $ — $ 18,932 Nine Months Ended September 30, 2023 5,475 17,041 18,219 4,667 5,544 1,085 — — 52,031 Total consumer loans $ 179,157 $ 578,522 $ 349,570 $ 74,576 $ 72,545 $ 121,665 $ 114,123 $ — $ 1,490,158 Total consumer loans charge-offs: Three Months Ended September 30, 2023 $ 1,987 $ 7,222 $ 5,728 $ 1,574 $ 2,078 $ 385 $ — $ — $ 18,974 Nine Months Ended September 30, 2023 5,475 17,041 18,219 4,667 5,544 1,154 — — 52,100 Loans and leases receivable $ 1,280,528 $ 4,853,685 $ 1,613,532 $ 670,215 $ 480,416 $ 1,239,192 $ 2,105,647 $ 220,270 $ 12,463,485 Loans and leases receivable charge-offs: Three Months Ended September 30, 2023 $ 2,125 $ 7,365 $ 5,728 $ 10,102 $ 2,078 $ 2,622 $ — $ — $ 30,020 Nine Months Ended September 30, 2023 $ 5,613 $ 17,406 $ 18,242 $ 13,221 $ 5,568 $ 9,663 $ — $ — $ 69,713 (1) Excludes $6.2 million of charge-offs for certain PCD loans against $8.7 million of allowance for credit losses on PCD loans recognized upon acquisition of a Venture Banking loan portfolio (included within Specialty Lending) from the FDIC on June 15, 2023. These PCD loans were originated in years 2016 to 2022. (2) Includes $7.0 million of charge-offs for commercial and industrial loans originated under the PPP that were subsequently determined to be ineligible for SBA forgiveness and guarantee and ultimately deemed uncollectible. Term Loans Amortized Cost Basis by Origination Year as of December 31, 2022 (amounts in thousands) 2022 2021 2020 2019 2018 Prior Revolving loans amortized cost basis Revolving loans converted to term Total Commercial and industrial loans and leases, including specialty lending: Pass $ 3,206,250 $ 682,132 $ 242,516 $ 198,866 $ 56,572 $ 83,417 $ 2,066,349 $ — $ 6,536,102 Special mention 11,134 6,023 27,780 — 1,501 172 2,599 — 49,209 Substandard — 22,917 967 8,431 6,713 39,554 8,937 — 87,519 Doubtful — — — — — — — — — Total commercial and industrial loans and leases $ 3,217,384 $ 711,072 $ 271,263 $ 207,297 $ 64,786 $ 123,143 $ 2,077,885 $ — $ 6,672,830 Multifamily loans: Pass $ 1,260,544 $ 364,047 $ 130,656 $ 22,167 $ 112,212 $ 203,215 $ — $ — $ 2,092,841 Special mention — — — — 4,959 50,858 — — 55,817 Substandard — 1,500 — — — 62,861 — — 64,361 Doubtful — — — — — — — — — Total multifamily loans $ 1,260,544 $ 365,547 $ 130,656 $ 22,167 $ 117,171 $ 316,934 $ — $ — $ 2,213,019 Commercial real estate owner occupied loans: Pass $ 293,096 $ 220,515 $ 105,925 $ 90,752 $ 34,196 $ 121,616 $ — $ — $ 866,100 Special mention — — — — 134 1,841 — — 1,975 Substandard — — — 134 10,569 6,561 — — 17,264 Doubtful — — — — — — — — — Total commercial real estate owner occupied loans $ 293,096 $ 220,515 $ 105,925 $ 90,886 $ 44,899 $ 130,018 $ — $ — $ 885,339 Commercial real estate non-owner occupied loans: Pass $ 339,044 $ 119,304 $ 156,281 $ 73,827 $ 62,237 $ 386,235 $ — $ — $ 1,136,928 Special mention — — 21,211 — — 10,617 — — 31,828 Substandard 10,910 — — 28,656 8,198 74,210 — — 121,974 Doubtful — — — — — — — — — Total commercial real estate non-owner occupied loans $ 349,954 $ 119,304 $ 177,492 $ 102,483 $ 70,435 $ 471,062 $ — $ — $ 1,290,730 Construction loans: Pass $ 72,177 $ 36,114 $ 9,537 $ 28,644 $ 4,696 $ 9,112 $ 1,729 $ — $ 162,009 Special mention — — — — — — — — — Substandard — — — — — — — — — Doubtful — — — — — — — — — Total construction loans $ 72,177 $ 36,114 $ 9,537 $ 28,644 $ 4,696 $ 9,112 $ 1,729 $ — $ 162,009 Total commercial loans and leases receivable $ 5,193,155 $ 1,452,552 $ 694,873 $ 451,477 $ 301,987 $ 1,050,269 $ 2,079,614 $ — $ 11,223,927 Residential real estate loans: Performing $ 162,217 $ 148,217 $ 7,224 $ 17,128 $ 10,739 $ 77,762 $ 67,782 $ — $ 491,069 Non-performing 271 366 238 441 1,425 3,357 785 — 6,883 Total residential real estate loans $ 162,488 $ 148,583 $ 7,462 $ 17,569 $ 12,164 $ 81,119 $ 68,567 $ — $ 497,952 Manufactured housing loans: Performing $ — $ — $ — $ 213 $ 103 $ 41,918 $ — $ — 42,234 Non-performing — — — — — 2,842 — — 2,842 Total manufactured housing loans $ — $ — $ — $ 213 $ 103 $ 44,760 $ — $ — $ 45,076 Installment loans: Performing $ 785,699 $ 305,729 $ 100,173 $ 100,570 $ 8,430 $ 782 $ 64,690 $ — $ 1,366,073 Non-performing 5,164 4,356 1,023 1,111 61 59 92 — 11,866 Total installment loans $ 790,863 $ 310,085 $ 101,196 $ 101,681 $ 8,491 $ 841 $ 64,782 $ — $ 1,377,939 Total consumer loans $ 953,351 $ 458,668 $ 108,658 $ 119,463 $ 20,758 $ 126,720 $ 133,349 $ — $ 1,920,967 Loans and leases receivable $ 6,146,506 $ 1,911,220 $ 803,531 $ 570,940 $ 322,745 $ 1,176,989 $ 2,212,963 $ — $ 13,144,894
Schedule of Loan Purchases and Sales	Purchases and sales of loans held for investment were as follows for the three and nine months ended September 30, 2023 and 2022: Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) 2023 2022 2023 2022 Purchases (1) Specialty lending $ — $ — $ 631,252 $ — Other commercial and industrial 4,977 — 15,285 — Commercial real estate owner occupied — — 2,867 — Residential real estate — 15,067 4,238 170,022 Personal installment (2) — 47,778 — 123,785 Other installment (2) 96,758 74,969 96,758 74,969 Total $ 101,735 $ 137,814 $ 750,400 $ 368,776 Sales (3) Specialty lending (4) $ — $ 2,200 $ 287,185 $ 2,200 Other commercial and industrial (5) 6,725 — 54,083 22,880 Multifamily — — — 2,879 Commercial real estate owner occupied (5) 5,671 — 24,522 8,960 Commercial real estate non-owner occupied — — 16,000 — Personal installment (6) — 500,001 — 500,001 Other installment — — 154,042 — Total $ 12,396 $ 502,201 $ 535,832 $ 536,920 (1) Amounts reported in the above table are the unpaid principal balance at time of purchase. The purchase price was 100.0% and 99.9% of the loans' unpaid principal balance for the three months ended September 30, 2023 and 2022, respectively. The purchase price was 87.7% and 98.7% of the loans' unpaid principal balance for the nine months ended September 30, 2023 and 2022, respectively. (2) Installment loan purchases for the three and nine months ended September 30, 2023 and 2022 consist of third-party originated unsecured consumer loans. None of the loans held for investment are considered sub-prime at the time of origination. Customers considers sub-prime borrowers to be those with FICO scores below 660. (3) For the three months ended September 30, 2023 and 2022, sales of loans held for investment resulted in net losses of $0.2 million and net gains of $0.1 million, respectively, included in the gain (loss) on sale of SBA and other loans in the consolidated statements of income. For the nine months ended September 30, 2023 and 2022, sales of loans held for investment resulted in net gains of $0.2 million and $3.2 million, respectively. (4) Includes a loss of $5.0 million from the sale of $670.0 million of short-term syndicated capital call lines of credit ($280.7 million of loans held for investment in unpaid principal balance and $389.3 million of unfunded loan commitments) included in loss on sale of capital call lines of credit in the consolidated statement of income for the nine months ended September 30, 2023. (5) Primarily sales of SBA loans. (6) Customers sold $521.8 million of consumer installment loans held for investment, inclusive of accrued interest and unamortized deferred loan origination costs, to a third-party sponsored VIE for a loss of $23.5 million included in loss on sale of consumer installment loans in the consolidated statements of income for the three and nine months ended September 30, 2022. Customers provided financing to the purchaser for a portion of the sales price in the form of $400.0 million of asset-backed securities. $100.7 million of the remaining sales proceeds were paid in cash.

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2023
Leases [Abstract]
Lessee, Summary of Right-of-Use Assets and Lease Liabilities	The following table summarizes operating lease ROU assets and operating lease liabilities and their corresponding balance sheet location: (amounts in thousands) Classification September 30, 2023 December 31, 2022 ASSETS Operating lease ROU assets Other assets $ 16,755 $ 16,133 LIABILITIES Operating lease liabilities Other liabilities $ 19,222 $ 19,046
Lease, Cost	The following table summarizes operating lease cost and its corresponding income statement location for the periods presented: Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) Classification 2023 2022 2023 2022 Operating lease cost (1) Occupancy expenses $ 1,260 $ 1,137 $ 3,775 $ 3,352 (1) There were no variable lease costs for the three and nine months ended September 30, 2023 and 2022, and sublease income for operating leases was immaterial.
Maturities of Non-cancelable Operating Lease Liabilities	Maturities of non-cancelable operating lease liabilities were as follows at September 30, 2023: (amounts in thousands) September 30, 2023 2023 $ 1,334 2024 4,786 2025 3,745 2026 2,977 2027 2,469 Thereafter 5,625 Total minimum payments 20,936 Less: interest 1,714 Present value of lease liabilities $ 19,222
Summary of Lease Term and Discount Rate for Operating Leases	The following table summarizes the weighted average remaining lease term and discount rate for Customers' operating leases at September 30, 2023 and December 31, 2022: September 30, 2023 December 31, 2022 Weighted average remaining lease term (years) Operating leases 5.7 years 5.1 years Weighted average discount rate Operating leases 3.24 % 2.85 %
Lessor, Lease Receivables and Investment in Operating Leases and their Corresponding Balance Sheet Location	The following table summarizes lease receivables and investment in operating leases and their corresponding balance sheet location at September 30, 2023 and December 31, 2022: (amounts in thousands) Classification September 30, 2023 December 31, 2022 ASSETS Direct financing leases Lease receivables Loans and leases receivable $ 175,931 $ 140,182 Guaranteed residual assets Loans and leases receivable 14,211 12,370 Unguaranteed residual assets Loans and leases receivable 9,551 7,555 Deferred initial direct costs Loans and leases receivable 977 667 Unearned income Loans and leases receivable (6,840) (3,404) Net investment in direct financing leases $ 193,830 $ 157,370 Operating leases Investment in operating leases Other assets $ 264,595 $ 248,454 Accumulated depreciation Other assets (72,512) (52,585) Deferred initial direct costs Other assets 1,270 1,461 Net investment in operating leases 193,353 197,330 Total lease assets $ 387,183 $ 354,700
Sales-type and Direct Financing Leases, Lease Receivable, Maturity	Maturities of operating and direct financing lease receivables were as follows at September 30, 2023: (amounts in thousands) Operating leases Direct financing leases 2023 $ 9,705 $ 11,562 2024 38,612 46,214 2025 34,976 36,992 2026 39,906 29,175 2027 29,824 24,254 Thereafter 69,025 28,840 Total minimum payments $ 222,048 177,037 Less: interest 1,106 Present value of lease receivables $ 175,931
Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity	Maturities of operating and direct financing lease receivables were as follows at September 30, 2023: (amounts in thousands) Operating leases Direct financing leases 2023 $ 9,705 $ 11,562 2024 38,612 46,214 2025 34,976 36,992 2026 39,906 29,175 2027 29,824 24,254 Thereafter 69,025 28,840 Total minimum payments $ 222,048 177,037 Less: interest 1,106 Present value of lease receivables $ 175,931

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2023
Deposit [Abstract]
Components of Deposits	The components of deposits at September 30, 2023 and December 31, 2022 were as follows: September 30, 2023 December 31, 2022 (amounts in thousands) Demand, non-interest bearing $ 4,758,682 $ 1,885,045 Demand, interest bearing 5,824,410 8,476,027 Savings, including money market deposit accounts 3,617,946 3,546,015 Time 3,994,326 4,249,866 Total deposits $ 18,195,364 $ 18,156,953
Schedule of Time Deposit Maturities	The scheduled maturities for time deposits at September 30, 2023 were as follows: (amounts in thousands) September 30, 2023 2023 $ 864,722 2024 2,457,137 2025 165,024 2026 360,201 2027 59,783 Thereafter 87,459 Total time deposits $ 3,994,326

Borrowings (Tables)

Borrowings (Tables)	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Short Term Borrowings	Short-term debt at September 30, 2023 and December 31, 2022 was as follows: September 30, 2023 December 31, 2022 (dollars in thousands) Amount Rate Amount Rate FHLB advances — — % 300,000 4.54 % Total short-term debt $ — $ 300,000
Summary of Bancorp's Short Term Borrowings	The following is a summary of additional information relating to Customers' short-term debt: (dollars in thousands) September 30, 2023 (1) December 31, 2022 (2) FRB advances (3) Maximum outstanding at any month end $ — $ — Average balance during the period 160,571 — Weighted-average interest rate during the period 5.23 % — % FHLB advances Maximum outstanding at any month end — 775,000 Average balance during the period 116,862 144,918 Weighted-average interest rate during the period 5.16 % 1.07 % Federal funds purchased Maximum outstanding at any month end — 895,000 Average balance during the period 5,055 349,581 Weighted-average interest rate during the period 4.97 % 1.66 % (1) For the nine months ended September 30, 2023. (2) For the year ended December 31, 2022. (3) Includes advances under the BTFP. The BTFP offers loans of up to one year to eligible depository institutions pledging any collateral valued at par, that are eligible for purchase by the Federal Reserve Banks in open market operations, such as U.S. Treasuries, U.S. agency securities, and U.S. agency mortgage-backed securities.
Schedule of Long-term Debt	Long-term FHLB and FRB advances at September 30, 2023 and December 31, 2022 were as follows: September 30, 2023 December 31, 2022 (dollars in thousands) Amount Rate Amount Rate FHLB advances (1)(2) $ 1,529,839 4.43 % $ 500,000 3.37 % Total long-term FHLB and FRB advances $ 1,529,839 $ 500,000 (1) Amounts reported in the above table include variable and fixed rate long-term advances from FHLB of $590.0 million with maturities ranging from June 2024 to September 2026 with a returnable option that can be repaid without penalty on certain predetermined dates at Customers Bank's option, and fixed rate long-term advances of $950.0 million with maturities ranging from March 2025 to March 2028, at September 30, 2023. (2) Includes $10.2 million of unamortized basis adjustments from interest rate swaps designated as fair value hedges of long-term advances from FHLB at September 30, 2023. Refer to NOTE 14 — DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES for additional information. Maturities of long-term FHLB advances were as follows at September 30, 2023: September 30, 2023 (dollars in thousands) Amount (1) Rate 2024 250,000 3.44 % 2025 200,000 4.45 % 2026 540,000 5.54 % 2027 450,000 3.70 % Thereafter 100,000 4.19 % Total long-term FHLB advances $ 1,540,000 (1) Amounts reported in the above table include variable and fixed rate long-term advances from FHLB of $590.0 million with maturities ranging from June 2024 to September 2026 with a returnable option that can be repaid without penalty on certain predetermined dates at Customers Bank's option. The maximum borrowing capacity with the FHLB and FRB at September 30, 2023 and December 31, 2022 was as follows: (amounts in thousands) September 30, 2023 December 31, 2022 Total maximum borrowing capacity with the FHLB $ 3,393,013 $ 3,241,120 Total maximum borrowing capacity with the FRB (1) 5,013,377 2,510,189 Qualifying loans and securities (1) serving as collateral against FHLB and FRB advances 10,050,340 7,142,865 (1) Includes $484.9 million of borrowing capacity available under the BTFP at September 30, 2023, which offers loans of up to one year to eligible depository institutions pledging any collateral valued at par, that are eligible for purchase by the Federal Reserve Banks in open market operations, such as U.S. Treasuries, U.S. agency securities, and U.S. agency mortgage-backed securities. Senior and Subordinated Debt Long-term senior notes and subordinated debt at September 30, 2023 and December 31, 2022 were as follows: September 30, 2023 December 31, 2022 (dollars in thousands) Issued by Ranking Carrying Amount Carrying Amount Rate Issued Amount Date Issued Maturity Price Customers Bancorp Senior (1) $ 98,893 $ 98,788 2.875 % $ 100,000 August 2021 August 2031 100.000 % Customers Bancorp Senior 24,882 24,792 4.500 % 25,000 September 2019 September 2024 100.000 % Total other borrowings $ 123,775 $ 123,580 Customers Bancorp Subordinated (2)(3) $ 72,721 $ 72,585 5.375 % $ 74,750 December 2019 December 2034 100.000 % Customers Bank Subordinated (2)(4) 109,440 109,367 6.125 % 110,000 June 2014 June 2029 100.000 % Total subordinated debt $ 182,161 $ 181,952 (1) The senior notes will bear an annual fixed rate of 2.875% until August 15, 2026. From August 15, 2026 until maturity, the notes will bear an annual interest rate equal to a benchmark rate, which is expected to be the three-month term SOFR after June 30, 2023, plus 235 basis points. Customers Bancorp has the ability to call the senior notes, in whole, or in part, at a redemption price equal to 100% of the principal balance at certain times on or after August 15, 2026. (2) The subordinated notes qualify as Tier 2 capital for regulatory capital purposes. (3) Customers Bancorp has the ability to call the subordinated notes, in whole, or in part, at a redemption price equal to 100% of the principal balance at certain times on or after December 30, 2029.

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Schedule of Stock by Class	The table below summarizes Customers' issuances of preferred stock that remain outstanding at September 30, 2023 and December 31, 2022 and the dividends paid per share. (amounts in thousands except share and per share data) Shares at Carrying value at Initial Fixed Rate Date at which dividend rate becomes floating and earliest redemption date Floating rate of Three-Month LIBOR Plus: Dividend Paid Per Share in 2023 (1) Fixed-to-floating rate: Issue Date September 30, 2023 December 31, 2022 September 30, 2023 December 31, 2022 Series E April 28, 2016 2,300,000 2,300,000 $ 55,593 $ 55,593 6.45 % June 15, 2021 5.140 % $ 1.94 Series F September 16, 2016 3,400,000 3,400,000 82,201 82,201 6.00 % December 15, 2021 4.762 % $ 1.87 Totals 5,700,000 5,700,000 $ 137,794 $ 137,794

Regulatory Capital (Tables)

Regulatory Capital (Tables)	9 Months Ended
	Sep. 30, 2023
Regulatory Capital [Abstract]
Summary of Capital Amounts, Tier 1 Risk Based and Tier 1 Leveraged Ratios	Generally, to comply with the regulatory definition of adequately capitalized, or well capitalized, respectively, or to comply with the Basel III capital requirements, an institution must at least maintain the common equity Tier 1, Tier 1 and total risk-based capital ratios and the Tier 1 leverage ratio in excess of the related minimum ratios as set forth in the following table: Minimum Capital Levels to be Classified as: Actual Adequately Capitalized Well Capitalized Basel III Compliant (dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Amount Ratio As of September 30, 2023: Common equity Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,596,157 11.305 % $ 635,353 4.500 % N/A N/A $ 988,327 7.000 % Customers Bank $ 1,830,143 12.974 % $ 634,762 4.500 % $ 916,878 6.500 % $ 987,408 7.000 % Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,733,950 12.281 % $ 847,137 6.000 % N/A N/A $ 1,200,111 8.500 % Customers Bank $ 1,830,143 12.974 % $ 846,349 6.000 % $ 1,128,466 8.000 % $ 1,198,995 8.500 % Total capital (to risk-weighted assets) Customers Bancorp, Inc. $ 2,015,526 14.275 % $ 1,129,516 8.000 % N/A N/A $ 1,482,490 10.500 % Customers Bank $ 2,038,998 14.455 % $ 1,128,466 8.000 % $ 1,410,582 10.000 % $ 1,481,111 10.500 % Tier 1 capital (to average assets) Customers Bancorp, Inc. $ 1,733,950 7.805 % $ 888,675 4.000 % N/A N/A $ 888,675 4.000 % Customers Bank $ 1,830,143 8.246 % $ 887,727 4.000 % $ 1,109,658 5.000 % $ 887,727 4.000 % As of December 31, 2022: Common equity Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,470,837 9.637 % $ 686,838 4.500 % N/A N/A $ 1,068,415 7.000 % Customers Bank $ 1,708,598 11.213 % $ 685,694 4.500 % $ 990,447 6.500 % $ 1,066,636 7.000 % Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,608,630 10.539 % $ 915,784 6.000 % N/A N/A $ 1,297,361 8.500 % Customers Bank $ 1,708,598 11.213 % $ 914,259 6.000 % $ 1,219,012 8.000 % $ 1,295,201 8.500 % Total capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,862,089 12.200 % $ 1,221,045 8.000 % N/A N/A $ 1,602,622 10.500 % Customers Bank $ 1,889,472 12.400 % $ 1,219,012 8.000 % $ 1,523,765 10.000 % $ 1,599,954 10.500 % Tier 1 capital (to average assets) Customers Bancorp, Inc. $ 1,608,630 7.664 % $ 839,547 4.000 % N/A N/A $ 839,547 4.000 % Customers Bank $ 1,708,598 8.150 % $ 838,611 4.000 % $ 1,048,264 5.000 % $ 838,611 4.000 %

Disclosures About Fair Value _2

Disclosures About Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Estimated Fair Values of Financial Instruments	The estimated fair values of Customers' financial instruments at September 30, 2023 and December 31, 2022 were as follows: Fair Value Measurements at September 30, 2023 (amounts in thousands) Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Assets: Cash and cash equivalents $ 3,419,974 $ 3,419,974 $ 3,419,974 $ — $ — Debt securities, available for sale 2,746,728 2,746,728 — 2,704,363 42,365 Debt securities, held to maturity 1,178,370 1,115,576 — 475,388 640,188 Loans held for sale 150,368 150,368 — 1,005 149,363 Total loans and leases receivable, net of allowance for credit losses on loans and leases 13,423,901 13,052,491 — 962,566 12,089,925 FHLB, Federal Reserve Bank, and other restricted stock 126,098 126,098 — 126,098 — Derivatives 28,475 28,475 — 28,421 54 Liabilities: Deposits $ 18,195,364 $ 18,171,737 $ 14,201,038 $ 3,970,699 $ — FHLB advances 1,529,839 1,507,761 — 1,507,761 — Other borrowings 123,775 103,388 — 103,388 — Subordinated debt 182,161 160,712 — 160,712 — Derivatives 41,433 41,433 — 41,433 — Fair Value Measurements at December 31, 2022 (amounts in thousands) Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Assets: Cash and cash equivalents $ 455,806 $ 455,806 $ 455,806 $ — $ — Debt securities, available for sale 2,961,015 2,961,015 — 2,887,749 73,266 Debt securities, held to maturity 840,259 793,813 — 437,680 356,133 Loans held for sale 328,312 328,312 — 322 327,990 Total loans and leases receivable, net of allowance for credit losses on loans and leases 15,335,435 14,890,823 — 1,323,312 13,567,511 FHLB, Federal Reserve Bank, and other restricted stock 74,196 74,196 — 74,196 — Derivatives 44,435 44,435 — 44,380 55 Liabilities: Deposits $ 18,156,953 $ 18,127,338 $ 13,907,087 $ 4,220,251 $ — FHLB advances 800,000 781,113 — 781,113 — Other borrowings 123,580 108,081 — 108,081 — Subordinated debt 181,952 168,441 — 168,441 — Derivatives 42,106 42,106 — 42,106 —
Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis	For financial assets and liabilities measured at fair value on a recurring and nonrecurring basis, the fair value measurements by level within the fair value hierarchy used at September 30, 2023 and December 31, 2022 were as follows: September 30, 2023 Fair Value Measurements at the End of the Reporting Period Using (amounts in thousands) Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Total Measured at Fair Value on a Recurring Basis: Assets Available for sale debt securities: Asset-backed securities $ — $ 62,351 $ 42,365 $ 104,716 Agency-guaranteed residential collateralized mortgage obligations — 118,469 — 118,469 Collateralized loan obligations — 815,856 — 815,856 Commercial mortgage-backed securities — 131,188 — 131,188 Corporate notes — 578,897 — 578,897 Private label collateralized mortgage obligations — 997,602 — 997,602 Derivatives — 28,421 54 28,475 Loans held for sale – fair value option — 1,005 24,515 25,520 Loans receivable, mortgage warehouse – fair value option — 962,566 — 962,566 Total assets – recurring fair value measurements $ — $ 3,696,355 $ 66,934 $ 3,763,289 Liabilities Derivatives $ — $ 41,433 $ — $ 41,433 Measured at Fair Value on a Nonrecurring Basis: Assets Collateral-dependent loans $ — $ — $ 3,515 $ 3,515 Total assets – nonrecurring fair value measurements $ — $ — $ 3,515 $ 3,515 December 31, 2022 Fair Value Measurements at the End of the Reporting Period Using (amounts in thousands) Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Total Measured at Fair Value on a Recurring Basis: Assets Available for sale debt securities: Asset-backed securities $ — $ 87,276 $ 73,266 $ 160,542 Agency-guaranteed residential collateralized mortgage obligations — 133,864 — 133,864 Collateralized loan obligations — 872,738 — 872,738 Commercial mortgage-backed securities — 136,357 — 136,357 Corporate notes — 595,253 — 595,253 Private label collateralized mortgage obligations — 1,062,261 — 1,062,261 Derivatives — 44,380 55 44,435 Loans held for sale – fair value option — 322 — 322 Loans receivable, mortgage warehouse – fair value option — 1,323,312 — 1,323,312 Total assets – recurring fair value measurements $ — $ 4,255,763 $ 73,321 $ 4,329,084 Liabilities Derivatives $ — $ 42,106 $ — $ 42,106 Measured at Fair Value on a Nonrecurring Basis: Assets Collateral-dependent loans $ — $ — $ 4,819 $ 4,819 Total assets – nonrecurring fair value measurements $ — $ — $ 4,819 $ 4,819
Statement of Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis	The changes in asset-backed securities (Level 3 assets) measured at fair value on a recurring basis for the three and nine months ended September 30, 2023 and 2022 are summarized in the tables below. Asset-backed securities (amounts in thousands) Three Months Ended September 30, 2023 2022 Balance at July 1 $ 51,825 $ 106,919 Principal payments and premium amortization (10,023) (16,852) Increase in allowance for credit losses (442) — Decrease in allowance for credit losses 250 158 Change in fair value recognized in OCI 755 (2,339) Balance at September 30 $ 42,365 $ 87,886 Asset-backed securities (amounts in thousands) Nine Months Ended September 30, 2023 2022 Balance at January 1 $ 73,266 $ 142,885 Principal payments and premium amortization (31,683) (51,348) Increase in allowance for credit losses (1,488) (253) Decrease in allowance for credit losses 311 — Change in fair value recognized in OCI 1,959 (3,398) Balance at September 30 $ 42,365 $ 87,886
Summary of Financial Assets and Financial Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis	The following tables summarize financial assets and financial liabilities measured at fair value as of September 30, 2023 and December 31, 2022 on a recurring and nonrecurring basis for which Customers utilized Level 3 inputs to measure fair value. The unobservable Level 3 inputs noted below contain a level of uncertainty that may differ from what is realized in an immediate settlement of the assets. Therefore, Customers may realize a value higher or lower than the current estimated fair value of the assets. Quantitative Information about Level 3 Fair Value Measurements (dollars in thousands) Fair Value Valuation Technique Unobservable Input Range September 30, 2023 Asset-backed securities $ 42,365 Discounted cash flow Discount rate Annualized loss rate Constant prepayment rate 10% - 10% (10%) 3% - 6% (5%) 12% - 30% (25%) Quantitative Information about Level 3 Fair Value Measurements (dollars in thousands) Fair Value Valuation Technique Unobservable Input Range December 31, 2022 Asset-backed securities $ 73,266 Discounted cash flow Discount rate Annualized loss rate Constant prepayment rate 9% - 9% (9%) 4% - 5% (5%) 19% - 25% (23%)

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Assets at Fair Value	As of September 30, 2023 and December 31, 2022, the following amounts were recorded on the consolidated balance sheet related to cumulative basis adjustments for fair value hedges. Amortized Cost Cumulative Amount of Fair Value Hedging Adjustment to Hedged Items (amounts in thousands) September 30, 2023 December 31, 2022 September 30, 2023 December 31, 2022 AFS debt securities $ 22,500 $ 22,500 $ (1,331) $ 1,777 Deposits 300,000 — 1,787 — FHLB advances 700,000 — (10,160) —
Fair Value of Derivative Financial Instruments	The following tables present the fair value of Customers' derivative financial instruments as well as their presentation on the consolidated balance sheets as of September 30, 2023 and December 31, 2022. September 30, 2023 Derivative Assets Derivative Liabilities (amounts in thousands) Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives not designated as hedging instruments: Interest rate swaps and caps (1) Other assets $ 28,420 Other liabilities $ 41,428 Credit contracts Other assets 1 Other liabilities 5 Residential mortgage loan commitments Other assets 54 Other liabilities — Total $ 28,475 $ 41,433 December 31, 2022 Derivative Assets Derivative Liabilities (amounts in thousands) Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as fair value hedges: Interest rate swaps Other assets $ 1,777 Other liabilities $ — Total $ 1,777 $ — Derivatives not designated as hedging instruments: Interest rate swaps and caps Other assets $ 42,589 Other liabilities $ 42,076 Credit contracts Other assets 14 Other liabilities 30 Residential mortgage loan commitments Other assets 55 Other liabilities — Total $ 42,658 $ 42,106 (1) Customers' centrally cleared derivatives are legally settled through variation margin payments and these payments are reflected as a reduction of the related derivative asset or liability, including accrued interest, on the consolidated balance sheet.
Effect of Derivative Financial Instruments on Net Income and Comprehensive Income	The following table presents amounts included in the consolidated statements of income related to derivatives designated as fair value hedges and derivatives not designated as hedges for the three and nine months ended September 30, 2023 and 2022. Amount of Income (Loss) Recognized in Earnings Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) Income Statement Location 2023 2022 2023 2022 Derivatives designated as fair value hedges: Recognized on interest rate swaps Net interest income $ 6,377 $ 510 $ 13,209 $ 3,530 Recognized on hedged AFS debt securities Net interest income (196) (510) (446) (3,530) Recognized on hedged FHLB advances Net interest income (6,181) — (12,763) — Total $ — $ — $ — $ — Derivatives not designated as hedging instruments: Interest rate swaps and caps Other non-interest income $ 192 $ 503 $ 332 $ 2,244 Credit contracts Other non-interest income 13 60 12 104 Residential mortgage loan commitments Other non-interest income (13) (57) — (139) Total $ 192 $ 506 $ 344 $ 2,209
Summary of Offsetting of Financial Assets and Derivative Assets	The following tables present derivative instruments that are subject to enforceable master netting arrangements. Customers' interest rate swaps and interest rate caps with institutional counterparties are subject to master netting arrangements and are included in the tables below. Interest rate swaps and interest rate caps with commercial banking customers and residential mortgage loan commitments are not subject to master netting arrangements and are excluded from the tables below. Customers has not made a policy election to offset its derivative positions. Gross Amounts Recognized on the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Net Amount (amounts in thousands) Financial Instruments Cash Collateral Received/Posted September 30, 2023 Interest rate derivative assets with institutional counterparties $ 28,419 $ — $ (28,419) $ — Interest rate derivative liabilities with institutional counterparties $ — $ — $ — $ — Gross Amounts Recognized on the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Net Amount (amounts in thousands) Financial Instruments Cash Collateral Received/Posted December 31, 2022 Interest rate derivative assets with institutional counterparties $ 29,706 $ (619) $ (29,087) $ — Interest rate derivative liabilities with institutional counterparties $ 619 $ (619) $ — $ —
Summary of Offsetting of Financial Liabilities and Derivative Liabilities	The following tables present derivative instruments that are subject to enforceable master netting arrangements. Customers' interest rate swaps and interest rate caps with institutional counterparties are subject to master netting arrangements and are included in the tables below. Interest rate swaps and interest rate caps with commercial banking customers and residential mortgage loan commitments are not subject to master netting arrangements and are excluded from the tables below. Customers has not made a policy election to offset its derivative positions. Gross Amounts Recognized on the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Net Amount (amounts in thousands) Financial Instruments Cash Collateral Received/Posted September 30, 2023 Interest rate derivative assets with institutional counterparties $ 28,419 $ — $ (28,419) $ — Interest rate derivative liabilities with institutional counterparties $ — $ — $ — $ — Gross Amounts Recognized on the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Net Amount (amounts in thousands) Financial Instruments Cash Collateral Received/Posted December 31, 2022 Interest rate derivative assets with institutional counterparties $ 29,706 $ (619) $ (29,087) $ — Interest rate derivative liabilities with institutional counterparties $ 619 $ (619) $ — $ —

Description of the Business - A

Description of the Business - Additional Information (Detail)	Sep. 30, 2023 branch
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of branches (branch)	7

Earnings (Loss) Per Share - Com

Earnings (Loss) Per Share - Components of Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income attributable to common shareholders, basic	$ 82,953	$ 61,364	$ 177,225	$ 192,779
Net income attributable to common shareholders, diluted	$ 82,953	$ 61,364	$ 177,225	$ 192,779
Weighted-average number of common shares outstanding – basic (shares)	31,290,581	32,455,814	31,452,700	32,706,652
Share-based compensation plans (shares)	884,503	770,793	583,759	1,000,212
Weighted-average number of common shares – diluted (shares)	32,175,084	33,226,607	32,036,459	33,706,864
Basic earnings per common share (usd per share)	$ 2.65	$ 1.89	$ 5.63	$ 5.89
Diluted earnings per common share (usd per share)	$ 2.58	$ 1.85	$ 5.53	$ 5.72

Earnings (Loss) Per Share - Ant

Earnings (Loss) Per Share - Anti-Dilutive Securities Excluded from Computation of Earnings (Loss) Per Share (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based compensation awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (shares)	319,973	730,486	685,951	100,707

Changes in Accumulated Other _3

Changes in Accumulated Other Comprehensive Income (Loss) by Component (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 1,456,652	$ 1,353,390	$ 1,402,961	$ 1,366,217
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity	1,379	0	3,700	0
Income tax effect	(350)	0	(939)	0
Other comprehensive income (loss), net of income tax effect	18,364	(31,245)	13,284	(151,146)
Ending balance	1,561,607	1,386,931	1,561,607	1,386,931
Unrealized Gains (Losses) on Available for Sale Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(168,176)	(124,881)	(163,096)	(4,980)
Unrealized gains (losses) arising during period, before tax	23,666	(46,450)	14,535	(213,532)
Income tax effect	(6,011)	12,077	(3,692)	55,518
Other comprehensive income (loss) before reclassifications	17,655	(34,373)	10,843	(158,014)
Reclassification adjustments for (gains) losses included in net income, before tax	(429)	4,227	(429)	9,281
Income tax effect	109	(1,099)	109	(2,413)
Amounts reclassified from accumulated other comprehensive income (loss) to net income	(320)	3,128	(320)	6,868
Amortization of unrealized loss on securities transferred from available-for-sale to held-to-maturity	1,379	0	3,700	0
Income tax effect	(350)	0	(939)	0
Amortization of unrealized loss on securities transferred from available for sale to held to maturity	1,029	0	2,761	0
Other comprehensive income (loss), net of income tax effect	18,364	(31,245)	13,284	(151,146)
Ending balance	$ (149,812)	$ (156,126)	$ (149,812)	$ (156,126)

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost and Approximate Fair Value of Investment Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 2,911,234		$ 3,138,534
Allowance for Credit Losses	(3,849)	$ (3,439)	(578)	$ (253)	$ (411)	$ 0
Gross Unrealized Gains	1,594		442
Gross Unrealized Losses	(162,251)		(177,383)
Fair Value	2,746,728		2,961,015
Equity securities	26,479		26,485
Total investment securities, at fair value	2,773,207		2,987,500
Available-for-sale debt securities, accrued interest	19,700		16,700
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	111,915		169,170
Allowance for Credit Losses	(1,755)	(1,563)	(578)	(253)	(411)	0
Gross Unrealized Gains	4		0
Gross Unrealized Losses	(5,448)		(8,050)
Fair Value	104,716		160,542
Agency-guaranteed residential collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	133,425		147,481
Allowance for Credit Losses	0		0
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(14,956)		(13,617)
Fair Value	118,469		133,864
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	826,764		896,992
Allowance for Credit Losses	0		0
Gross Unrealized Gains	817		88
Gross Unrealized Losses	(11,725)		(24,342)
Fair Value	815,856		872,738
Commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	136,111		142,222
Allowance for Credit Losses	0		0
Gross Unrealized Gains	0		1
Gross Unrealized Losses	(4,923)		(5,866)
Fair Value	131,188		136,357
Corporate notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	638,230		657,086
Allowance for Credit Losses	(2,094)	$ (1,876)	0	$ 0	$ 0	$ 0
Gross Unrealized Gains	86		45
Gross Unrealized Losses	(57,325)		(61,878)
Fair Value	578,897		595,253
Private label collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,064,789		1,125,583
Allowance for Credit Losses	0		0
Gross Unrealized Gains	687		308
Gross Unrealized Losses	(67,874)		(63,630)
Fair Value	$ 997,602		$ 1,062,261

Investment Securities - Additio

Investment Securities - Additional Information (Detail)		3 Months Ended			9 Months Ended
	Jun. 30, 2023 USD ($)	Sep. 30, 2023 USD ($) security corporateNote assetBackedSecurity	Jun. 30, 2023 USD ($)	Sep. 30, 2022 USD ($) assetBackedSecurity	Sep. 30, 2023 USD ($) security corporateNote assetBackedSecurity	Sep. 30, 2022 USD ($) assetBackedSecurity	Dec. 31, 2022 USD ($) security
Debt Securities, Available-for-sale [Line Items]
Proceeds from sales of investment securities available for sale		$ 4,100,000		$ 126,600,000	$ 4,075,000	$ 681,633,000
Number of available-for-sale investment securities, unrealized loss position, less than twelve month category | security		25			25
Number of available-for-sale investment securities, unrealized loss position, twelve month or more category | security		155			155
Number of asset-backed securities with deterioration in future estimated cash flows | assetBackedSecurity		4		4	4	4
Number of corporate notes with deterioration in future estimated cash flows | corporateNote		12			12
Number of available-for-sale investment securities, unrealized loss position | security		180			180		156
Debt securities, available for sale		$ 2,746,728,000			$ 2,746,728,000		$ 2,961,015,000
Debt securities, held-to-maturity, allowance for credit loss, excluding accrued interest		0			0		0
Carrying value of consumer loans sold				$ 521,800,000		$ 521,800,000
Net loss on sale of loans					1,200,000
Investment securities held to maturity		1,178,370,000			1,178,370,000		840,259,000
Servicing assets		3,800,000			3,800,000
Variable Interest Entity, Not Primary Beneficiary
Debt Securities, Available-for-sale [Line Items]
Investment securities held to maturity		436,800,000			436,800,000
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, available for sale		104,716,000			104,716,000		160,542,000
Debt securities, held-to-maturity, allowance for credit loss, excluding accrued interest		0			0		0
Investment securities held to maturity		645,362,000			645,362,000		361,107,000
Consumer Loan, Held-For-Sale | Personal And Other Installment Loans
Debt Securities, Available-for-sale [Line Items]
Carrying value of consumer loans sold	$ 556,700,000
Consumer Loan, Held-For-Sale | Other Installment Loans
Debt Securities, Available-for-sale [Line Items]
Carrying value of consumer loans sold			$ 154,000,000
Asset Pledged as Collateral
Debt Securities, Available-for-sale [Line Items]
Debt securities, available for sale		1,500,000,000			1,500,000,000
Debt securities		$ 402,600,000			$ 402,600,000		$ 16,700,000

Investment Securities - Gain (L

Investment Securities - Gain (Loss) on Sale of AFS Debt Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Gross realized gains	$ 0	$ 0	$ 0	$ 2,563
Gross realized losses	(429)	(2,135)	(429)	(8,790)
Net realized gains (losses) on sale of available for sale debt securities	$ (429)	$ (2,135)	$ (429)	$ (6,227)

Investment Securities - Summa_2

Investment Securities - Summary of Available-for-Sale Debt Securities by Stated Maturity (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Due in one year or less, amortized cost	$ 7,500
Due after one year through five years, amortized cost	532,269
Due after five years through ten years, amortized cost	98,461
Amortized Cost	2,911,234	$ 3,138,534
Due in one year or less, fair value	7,444
Due after one year through five years, fair value	488,929
Due after five years through ten years, fair value	82,524
Fair Value	2,746,728	2,961,015
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, without single maturity date, amortized cost	111,915
Amortized Cost	111,915	169,170
Debt securities, available-for-sale, without single maturity date, fair value	104,716
Fair Value	104,716	160,542
Agency-guaranteed residential collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, without single maturity date, amortized cost	133,425
Amortized Cost	133,425	147,481
Debt securities, available-for-sale, without single maturity date, fair value	118,469
Fair Value	118,469	133,864
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, without single maturity date, amortized cost	826,764
Amortized Cost	826,764	896,992
Debt securities, available-for-sale, without single maturity date, fair value	815,856
Fair Value	815,856	872,738
Commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, without single maturity date, amortized cost	136,111
Amortized Cost	136,111	142,222
Debt securities, available-for-sale, without single maturity date, fair value	131,188
Fair Value	131,188	136,357
Private label collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, without single maturity date, amortized cost	1,064,789
Amortized Cost	1,064,789	1,125,583
Debt securities, available-for-sale, without single maturity date, fair value	997,602
Fair Value	$ 997,602	$ 1,062,261

Investment Securities - Gross U

Investment Securities - Gross Unrealized Losses and Fair Value, Aggregated by Investment Category (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	$ 285,238	$ 1,585,495
Less than 12 Months, Unrealized Losses	(15,183)	(102,076)
12 Months or More, Fair Value	2,070,331	901,562
12 Months or More, Unrealized Losses	(135,150)	(75,307)
Total, Fair Value	2,355,569	2,487,057
Total, Unrealized Losses	(150,333)	(177,383)
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	0	160,542
Less than 12 Months, Unrealized Losses	0	(8,050)
12 Months or More, Fair Value	42,932	0
12 Months or More, Unrealized Losses	(2,547)	0
Total, Fair Value	42,932	160,542
Total, Unrealized Losses	(2,547)	(8,050)
Agency-guaranteed residential collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	0	133,864
Less than 12 Months, Unrealized Losses	0	(13,617)
12 Months or More, Fair Value	133,425	0
12 Months or More, Unrealized Losses	(14,956)	0
Total, Fair Value	133,425	133,864
Total, Unrealized Losses	(14,956)	(13,617)
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	46,333	386,701
Less than 12 Months, Unrealized Losses	(1,472)	(13,516)
12 Months or More, Fair Value	614,978	315,270
12 Months or More, Unrealized Losses	(10,253)	(10,826)
Total, Fair Value	661,311	701,971
Total, Unrealized Losses	(11,725)	(24,342)
Commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	0	39,828
Less than 12 Months, Unrealized Losses	0	(1,410)
12 Months or More, Fair Value	134,866	93,005
12 Months or More, Unrealized Losses	(4,923)	(4,456)
Total, Fair Value	134,866	132,833
Total, Unrealized Losses	(4,923)	(5,866)
Corporate notes
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	84,827	386,464
Less than 12 Months, Unrealized Losses	(3,106)	(36,119)
12 Months or More, Fair Value	469,187	178,955
12 Months or More, Unrealized Losses	(45,202)	(25,759)
Total, Fair Value	554,014	565,419
Total, Unrealized Losses	(48,308)	(61,878)
Private label collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	154,078	478,096
Less than 12 Months, Unrealized Losses	(10,605)	(29,364)
12 Months or More, Fair Value	674,943	314,332
12 Months or More, Unrealized Losses	(57,269)	(34,266)
Total, Fair Value	829,021	792,428
Total, Unrealized Losses	$ (67,874)	$ (63,630)

Investment Securities - Credit

Investment Securities - Credit Valuation Allowance for Available For Sale Debt Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Debt securities, allowance for credit loss, beginning balance	$ 3,439	$ 411	$ 578	$ 0
Credit losses on securities for which credit losses were not previously recorded	564	0	2,485	253
Credit losses on previously impaired securities	511	0	1,488	0
Decrease in allowance for credit losses on previously impaired securities	(274)	(158)	(311)	0
Reduction due to sales	(391)	0	(391)	0
Debt securities, allowance for credit loss, ending balance	3,849	253	3,849	253
Asset-backed securities
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Debt securities, allowance for credit loss, beginning balance	1,563	411	578	0
Credit losses on securities for which credit losses were not previously recorded	0	0	0	253
Credit losses on previously impaired securities	442	0	1,488	0
Decrease in allowance for credit losses on previously impaired securities	(250)	(158)	(311)	0
Reduction due to sales	0	0	0	0
Debt securities, allowance for credit loss, ending balance	1,755	253	1,755	253
Corporate notes
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Debt securities, allowance for credit loss, beginning balance	1,876	0	0	0
Credit losses on securities for which credit losses were not previously recorded	564	0	2,485	0
Credit losses on previously impaired securities	69	0	0	0
Decrease in allowance for credit losses on previously impaired securities	(24)	0	0	0
Reduction due to sales	(391)	0	(391)	0
Debt securities, allowance for credit loss, ending balance	$ 2,094	$ 0	$ 2,094	$ 0

Investment Securities - Summa_3

Investment Securities - Summary of Amortized Cost and Approximate Fair Value of Investment Securities (Detail) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	$ 1,178,370,000	$ 840,259,000
Allowance for Credit Losses	0	0
Net Carrying Value	1,178,370,000	840,259,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(62,794,000)	(46,446,000)
Fair Value	1,115,576,000	793,813,000
Debt securities, held to maturity, accrued interest	2,700,000	1,000,000
Asset-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	645,362,000	361,107,000
Allowance for Credit Losses	0	0
Net Carrying Value	645,362,000	361,107,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(5,174,000)	(4,974,000)
Fair Value	640,188,000	356,133,000
Agency-guaranteed residential mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	7,077,000	7,189,000
Allowance for Credit Losses	0	0
Net Carrying Value	7,077,000	7,189,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,027,000)	(563,000)
Fair Value	6,050,000	6,626,000
Agency-guaranteed commercial mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	1,870,000	1,928,000
Allowance for Credit Losses	0	0
Net Carrying Value	1,870,000	1,928,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(139,000)	(104,000)
Fair Value	1,731,000	1,824,000
Agency-guaranteed residential collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	191,469,000	204,495,000
Allowance for Credit Losses	0	0
Net Carrying Value	191,469,000	204,495,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(23,331,000)	(18,376,000)
Fair Value	168,138,000	186,119,000
Agency-guaranteed commercial collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	147,414,000	151,711,000
Allowance for Credit Losses	0	0
Net Carrying Value	147,414,000	151,711,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(15,848,000)	(9,435,000)
Fair Value	131,566,000	142,276,000
Private label collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	185,178,000	113,829,000
Allowance for Credit Losses	0	0
Net Carrying Value	185,178,000	113,829,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(17,275,000)	(12,994,000)
Fair Value	$ 167,903,000	$ 100,835,000

Investment Securities - Summa_4

Investment Securities - Summary of Held to Maturity Debt Securities by Stated Maturity (Detail) $ in Thousands	Sep. 30, 2023 USD ($)
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	$ 1,178,370
Fair Value	1,115,576
Asset-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	645,362
Fair Value	640,188
Agency-guaranteed residential mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	7,077
Fair Value	6,050
Agency-guaranteed commercial mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	1,870
Fair Value	1,731
Agency-guaranteed residential collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	191,469
Fair Value	168,138
Agency-guaranteed commercial collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	147,414
Fair Value	131,566
Private label collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	185,178
Fair Value	$ 167,903

Investment Securities - Debt Se

Investment Securities - Debt Securities, Held-to-maturity, Credit Quality Indicator (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	$ 1,178,370	$ 840,259
Asset-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	645,362	361,107
Agency-guaranteed residential mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	7,077	7,189
Agency-guaranteed commercial mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	1,870	1,928
Agency-guaranteed residential collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	191,469	204,495
Agency-guaranteed commercial collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	147,414	151,711
Private label collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	185,178	$ 113,829
AAA
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	67,528
AAA | Asset-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
AAA | Agency-guaranteed residential mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
AAA | Agency-guaranteed commercial mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
AAA | Agency-guaranteed residential collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
AAA | Agency-guaranteed commercial collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
AAA | Private label collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	67,528
AA
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	18,234
AA | Asset-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
AA | Agency-guaranteed residential mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
AA | Agency-guaranteed commercial mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
AA | Agency-guaranteed residential collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
AA | Agency-guaranteed commercial collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
AA | Private label collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	18,234
A
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	25,920
A | Asset-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
A | Agency-guaranteed residential mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
A | Agency-guaranteed commercial mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
A | Agency-guaranteed residential collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
A | Agency-guaranteed commercial collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	0
A | Private label collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	25,920
Not Rated
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	1,066,688
Not Rated | Asset-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	645,362
Not Rated | Agency-guaranteed residential mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	7,077
Not Rated | Agency-guaranteed commercial mortgage-backed securities
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	1,870
Not Rated | Agency-guaranteed residential collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	191,469
Not Rated | Agency-guaranteed commercial collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	147,414
Not Rated | Private label collateralized mortgage obligations
Schedule of Held-to-Maturity Securities [Line Items]
Investment securities held to maturity	$ 73,496

Loans Held for Sale - Compositi

Loans Held for Sale - Composition of Loans Held for Sale (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Receivable, Held-for-Sale [Abstract]
Multifamily loans, at lower of cost or fair value	$ 0	$ 4,079
Total commercial loans held for sale	0	4,079
Home equity conversion mortgages, at lower of cost or fair value	0	507
Residential mortgage loans, at fair value	1,005	322
Personal installment loans, at lower of cost or fair value	124,848	133,801
Other installment loans, at lower of cost or fair value	0	189,603
Other installment loans, at fair value	24,515	0
Total consumer loans held for sale	150,368	324,233
Loans held for sale	$ 150,368	$ 328,312

Loans Held for Sale - Narrative

Loans Held for Sale - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Loans held-for-sale (including nonperforming loans)				$ 200		$ 6,200
Carrying value of consumer loans sold			$ 521,800		$ 521,800
Investment securities held to maturity				1,178,370		$ 840,259
Cash proceeds from sale of consumer installment loans				409,503	$ 136,920
Consumer Loan, Held-For-Sale | Personal And Other Installment Loans
Debt Securities, Available-for-sale [Line Items]
Carrying value of consumer loans sold	$ 556,700
Consumer Loan, Held-For-Sale | Other Installment Loans
Debt Securities, Available-for-sale [Line Items]
Carrying value of consumer loans sold		$ 154,000
Variable Interest Entity, Not Primary Beneficiary
Debt Securities, Available-for-sale [Line Items]
Investment securities held to maturity				$ 436,800
Cash proceeds from sale of consumer installment loans	$ 115,100

Loans and Leases Receivable a_3

Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Schedule of Loans and Leases Receivable (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, mortgage warehouse, at fair value	$ 962,566		$ 1,323,312
Loans receivable, PPP	137,063		998,153
Loans and leases receivable	12,463,485		13,144,894
Allowance for credit losses on loans and leases	(139,213)	$ (139,656)	(130,924)	$ (130,197)	$ (156,530)	$ (137,804)
Total loans and leases receivable, net of allowance for credit losses on loans and leases	13,423,901		15,335,435
Deferred (fees) costs and unamortized (discounts) premiums, net	(35,800)		(21,500)
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	2,130,213		2,213,019
Allowance for credit losses on loans and leases	(15,870)	(15,400)	(14,541)	(14,244)	(9,765)	(4,477)
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	252,588		162,009
Allowance for credit losses on loans and leases	(3,130)	(2,639)	(1,913)	(1,614)	(1,179)	(692)
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	483,133		497,952
Allowance for credit losses on loans and leases	(6,802)	(6,846)	(6,094)	(5,453)	(5,578)	(2,383)
Manufactured housing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	40,129		45,076
Allowance for credit losses on loans and leases	(4,080)	$ (4,338)	(4,430)	$ (4,482)	$ (4,080)	$ (4,278)
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	10,973,327		11,223,927
Commercial | Specialty lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	5,422,161		5,412,887
Commercial | Other commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	1,195,347		1,259,943
Commercial | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	2,130,213		2,213,019
Commercial | Commercial real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	794,815		885,339
Commercial | Commercial real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	1,178,203		1,290,730
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	252,588		162,009
Commercial | Direct finance equipment leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	193,800		157,400
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	1,490,158		1,920,967
Consumer | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	483,133		497,952
Consumer | Manufactured housing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	40,129		45,076
Consumer | Personal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	629,843		964,641
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	$ 337,053		$ 413,298

Loans and Leases Receivable a_4

Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Additional Information (Detail)		3 Months Ended		9 Months Ended
	Jun. 15, 2023 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($) loan	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($) loan	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Accrued interest		$ 96,800,000		$ 96,800,000			$ 105,500,000
Loans receivable, excluding accrued interest		13,423,901,000		$ 13,423,901,000			15,335,435,000
Loans held for sale, average life from purchase to sale				30 days
Loans and leases receivable		12,463,485,000		$ 12,463,485,000			13,144,894,000
Allowance for credit loss, excluding accrued interest		139,213,000	$ 130,197,000	139,213,000	$ 130,197,000	$ 139,656,000	130,924,000	$ 156,530,000	$ 137,804,000
Allowance for credit loss, period increase				8,300,000
Number of commitments to lend additional funds (commitment)		0		0			0
Loans reported as TDR							16,800,000
Number of loans | loan			71		184
Purchases		101,735,000	$ 137,814,000	750,400,000	$ 368,776,000
Loans and leases receivable, charge-offs		30,020,000	21,484,000	69,713,000	45,935,000
Legal settlement expense		4,096,000	$ 0	4,096,000	$ 0
Asset Pledged as Collateral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and leases receivable		8,500,000,000		8,500,000,000			7,100,000,000
Forgiveness of debt
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan			0		0
Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and leases receivable		137,100,000		137,100,000			998,200,000
Interest income		600,000	$ 14,700,000	25,800,000	$ 72,100,000
Loans and leases receivable, charge-offs				7,000,000
Specialty lending | FDIC
Financing Receivable, Troubled Debt Restructuring [Line Items]
Purchases	$ 631,000,000
Specialty lending
Financing Receivable, Troubled Debt Restructuring [Line Items]
Purchases		0	$ 0	631,252,000	$ 0
Commercial Real Estate | Other commercial and industrial | Collateral Dependent Loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans receivable, excluding accrued interest		$ 18,400,000		$ 18,400,000			$ 11,500,000

Loans and Leases Receivable a_5

Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Performance Status (Detail) - USD ($) $ in Thousands				3 Months Ended		9 Months Ended
	Sep. 30, 2023	Jun. 15, 2023	Dec. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	$ 12,463,485		$ 13,144,894	$ 12,463,485		$ 12,463,485
Loans still accruing interest because collection is considered probable	600		1,900	600		600
Purchased-credit-impaired loans	195,800		8,300
Purchases				101,735	$ 137,814	750,400	$ 368,776
Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	137,100		998,200	137,100		137,100
Specialty lending | FDIC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases		$ 631,000
Purchased-credit-impaired loans		$ 228,700
Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	58,529		75,345	58,529		58,529
30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	16,294		38,471	16,294		16,294
30-59 Days past due | Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	1,300		600	1,300		1,300
60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	15,216		15,570	15,216		15,216
90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	27,019		21,304	27,019		27,019
Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	12,404,956		13,069,549	12,404,956		12,404,956
60 Days or More Past Due | Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	106,900		36,000	106,900		106,900
Commercial and industrial, including specialty lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	6,617,508		6,672,830	6,617,508		6,617,508
Commercial and industrial, including specialty lending | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	8,633		5,255	8,633		8,633
Commercial and industrial, including specialty lending | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	2,070		3,123	2,070		2,070
Commercial and industrial, including specialty lending | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	1,273		717	1,273		1,273
Commercial and industrial, including specialty lending | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	5,290		1,415	5,290		5,290
Commercial and industrial, including specialty lending | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	6,608,875		6,667,575	6,608,875		6,608,875
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	2,130,213		2,213,019	2,130,213		2,130,213
Multifamily | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0		17,044	0		0
Multifamily | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0		10,684	0		0
Multifamily | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0		5,217	0		0
Multifamily | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0		1,143	0		0
Multifamily | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	2,130,213		2,195,975	2,130,213		2,130,213
Commercial real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	794,815		885,339	794,815		794,815
Commercial real estate owner occupied | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	10,676		7,877	10,676		10,676
Commercial real estate owner occupied | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	50		5,173	50		50
Commercial real estate owner occupied | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	3,234		0	3,234		3,234
Commercial real estate owner occupied | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	7,392		2,704	7,392		7,392
Commercial real estate owner occupied | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	784,139		877,462	784,139		784,139
Commercial real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	1,178,203		1,290,730	1,178,203		1,178,203
Commercial real estate non-owner occupied | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0		2,147	0		0
Commercial real estate non-owner occupied | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0		2,136	0		0
Commercial real estate non-owner occupied | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0		0	0		0
Commercial real estate non-owner occupied | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0		11	0		0
Commercial real estate non-owner occupied | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	1,178,203		1,288,583	1,178,203		1,178,203
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	252,588		162,009	252,588		252,588
Construction | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0		0	0		0
Construction | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0		0	0		0
Construction | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0		0	0		0
Construction | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	0		0	0		0
Construction | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	252,588		162,009	252,588		252,588
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	483,133		497,952	483,133		483,133
Purchases				0	$ 15,067	4,238	$ 170,022
Residential real estate | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	10,502		9,523	10,502		10,502
Residential real estate | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	3,773		5,208	3,773		3,773
Residential real estate | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	2,898		1,157	2,898		2,898
Residential real estate | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	3,831		3,158	3,831		3,831
Residential real estate | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	472,631		488,429	472,631		472,631
Manufactured housing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	40,129		45,076	40,129		40,129
Manufactured housing | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	4,247		4,784	4,247		4,247
Manufactured housing | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	673		901	673		673
Manufactured housing | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	367		537	367		367
Manufactured housing | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	3,207		3,346	3,207		3,207
Manufactured housing | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	35,882		40,292	35,882		35,882
Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	966,896		1,377,939	966,896		966,896
Installment | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	24,471		28,715	24,471		24,471
Installment | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	9,728		11,246	9,728		9,728
Installment | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	7,444		7,942	7,444		7,444
Installment | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	7,299		9,527	7,299		7,299
Installment | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	$ 942,425		$ 1,349,224	$ 942,425		$ 942,425

Loans and Leases Receivable a_6

Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Summary of Amortized Cost of Loans and Leases on Nonaccrual Status (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	$ 17,180	$ 12,564
Nonaccrual loans with related allowance	12,469	11,967
Total nonaccrual loans	29,649	24,531
Commercial and industrial, including specialty lending
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	3,297	1,731
Nonaccrual loans with related allowance	2,470	30
Total nonaccrual loans	5,767	1,761
Multifamily
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	0	1,143
Nonaccrual loans with related allowance	0	0
Total nonaccrual loans	0	1,143
Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	7,442	2,768
Nonaccrual loans with related allowance	0	0
Total nonaccrual loans	7,442	2,768
Residential real estate
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	6,441	6,922
Nonaccrual loans with related allowance	118	0
Total nonaccrual loans	6,559	6,922
Manufactured housing
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	0	0
Nonaccrual loans with related allowance	2,582	2,410
Total nonaccrual loans	2,582	2,410
Installment
Financing Receivable, Impaired [Line Items]
Nonaccrual loans with no related allowance	0	0
Nonaccrual loans with related allowance	7,299	9,527
Total nonaccrual loans	$ 7,299	$ 9,527

Loans and Leases Receivable a_7

Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Schedule of Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 139,656	$ 156,530	$ 130,924	$ 137,804
Allowance for credit losses on FDIC PCD loans, net of charge-offs			2,576
Charge-offs	(30,020)	(21,484)	(69,713)	(45,935)
Recoveries	12,522	2,987	18,000	6,731
Provision (benefit) for credit losses on loans and leases	17,055	(7,836)	57,426	31,597
Ending balance	139,213	130,197	139,213	130,197
Commercial and industrial, including specialty lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	29,092	11,081	17,582	12,702
Allowance for credit losses on FDIC PCD loans, net of charge-offs			2,576
Charge-offs	(9,008)	(2,657)	(9,600)	(3,235)
Recoveries	6,034	76	6,439	1,129
Provision (benefit) for credit losses on loans and leases	(1,132)	6,631	7,989	4,535
Ending balance	24,986	15,131	24,986	15,131
Commercial and industrial, including specialty lending | Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge-offs	(9,008)		(9,600)
Multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	15,400	9,765	14,541	4,477
Allowance for credit losses on FDIC PCD loans, net of charge-offs			0
Charge-offs	(1,999)	0	(3,447)	(1,990)
Recoveries	0	0	0	337
Provision (benefit) for credit losses on loans and leases	2,469	4,479	4,776	11,420
Ending balance	15,870	14,244	15,870	14,244
Multifamily | Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge-offs	(1,999)		(3,447)
Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	10,215	4,745	6,454	3,213
Allowance for credit losses on FDIC PCD loans, net of charge-offs			0
Charge-offs	(39)	0	(39)	0
Recoveries	0	0	34	49
Provision (benefit) for credit losses on loans and leases	187	1,475	3,914	2,958
Ending balance	10,363	6,220	10,363	6,220
Commercial real estate owner occupied | Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge-offs	(39)		(39)
Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	13,495	8,880	11,219	6,210
Allowance for credit losses on FDIC PCD loans, net of charge-offs			0
Charge-offs	0	(4,862)	(4,527)	(5,025)
Recoveries	0	31	27	43
Provision (benefit) for credit losses on loans and leases	2,324	7,283	9,100	10,104
Ending balance	15,819	11,332	15,819	11,332
Commercial real estate non-owner occupied | Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge-offs	0		(4,527)
Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	2,639	1,179	1,913	692
Allowance for credit losses on FDIC PCD loans, net of charge-offs			0
Charge-offs	0	0	0	0
Recoveries	0	10	116	226
Provision (benefit) for credit losses on loans and leases	491	425	1,101	696
Ending balance	3,130	1,614	3,130	1,614
Construction | Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge-offs	0		0
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	6,846	5,578	6,094	2,383
Allowance for credit losses on FDIC PCD loans, net of charge-offs			0
Charge-offs	(42)	0	(69)	(4)
Recoveries	29	13	34	58
Provision (benefit) for credit losses on loans and leases	(31)	(138)	743	3,016
Ending balance	6,802	5,453	6,802	5,453
Manufactured housing
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,338	4,080	4,430	4,278
Allowance for credit losses on FDIC PCD loans, net of charge-offs			0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (benefit) for credit losses on loans and leases	(258)	402	(350)	204
Ending balance	4,080	4,482	4,080	4,482
Installment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	57,631	111,222	68,691	103,849
Allowance for credit losses on FDIC PCD loans, net of charge-offs			0
Charge-offs	(18,932)	(13,965)	(52,031)	(35,681)
Recoveries	6,459	2,857	11,350	4,889
Provision (benefit) for credit losses on loans and leases	13,005	(28,393)	30,153	(1,336)
Ending balance	$ 58,163	$ 71,721	$ 58,163	$ 71,721

Loans and Leases Receivable a_8

Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Loan Modifications for Borrowers Experiencing Financial Difficulty (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 4,200	$ 11,862
Loan modifications	11,864	11,864
30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	837	837
60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	565	565
90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	523	523
Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	9,939	9,939
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	3,863	11,085
Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	210	442
Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	28	222
Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	99	113
Commercial real estate owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 169
Percentage of Total by Financing Class		0.02%
Interest Rate Reduction (%)		0
Debt Forgiven		$ 0
Loan modifications	169	169
Commercial real estate owner occupied | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	0
Commercial real estate owner occupied | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	0
Commercial real estate owner occupied | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	169	169
Commercial real estate owner occupied | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	0
Commercial real estate owner occupied | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 169
Term Extension and Payment Deferral (in months)		4 months
Commercial real estate owner occupied | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 0
Term Extension and Payment Deferral (in months)		0 months
Commercial real estate owner occupied | Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		$ 0
Commercial real estate owner occupied | Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans		0
Manufactured housing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 99	$ 119
Percentage of Total by Financing Class	0.25%	0.30%
Interest Rate Reduction (%)	0.044	0.043
Debt Forgiven	$ 0	$ 0
Loan modifications	119	119
Manufactured housing | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	0
Manufactured housing | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	0
Manufactured housing | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	0	0
Manufactured housing | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	119	119
Manufactured housing | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 0	$ 6
Term Extension and Payment Deferral (in months)	31 months	30 months
Manufactured housing | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 0	$ 0
Term Extension and Payment Deferral (in months)	0 months	0 months
Manufactured housing | Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 0	$ 0
Manufactured housing | Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	99	113
Personal installment
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 4,101	$ 11,574
Percentage of Total by Financing Class	0.42%	1.20%
Interest Rate Reduction (%)	0	0
Debt Forgiven	$ 20	$ 183
Loan modifications	11,576	11,576
Personal installment | 30-59 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	837	837
Personal installment | 60-89 Days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	565	565
Personal installment | 90 Days or more past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	354	354
Personal installment | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan modifications	9,820	9,820
Personal installment | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 3,863	$ 10,910
Term Extension and Payment Deferral (in months)	6 months	6 months
Personal installment | Payment Deferral
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 210	$ 442
Term Extension and Payment Deferral (in months)	6 months	6 months
Personal installment | Debt Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 28	$ 222
Personal installment | Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Amortized cost of loans	$ 0	$ 0

Loans and Leases Receivable a_9

Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Analysis of Loans Modified in Troubled Debt Restructuring by Type of Concession (Detail) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022 USD ($) loan	Sep. 30, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	71	184
Recorded investment | $	$ 739	$ 2,403
Interest-rate reductions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	0	14
Recorded investment | $	$ 0	$ 470
Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	71	170
Recorded investment | $	$ 739	$ 1,933

Loans and Leases Receivable _10

Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Summary of Loans Modified in Troubled Debt Restructurings and Related Recorded Investment (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	36
Recorded investment | $	$ 585
Manufactured housing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	1
Recorded investment | $	$ 46
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	1
Recorded investment | $	$ 119
Installment
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	34
Recorded investment | $	$ 420

Loans and Leases Receivable _11

Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Credit Ratings (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jun. 15, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		$ 1,280,528		$ 1,280,528		$ 6,146,506
Fiscal year before current year		4,853,685		4,853,685		1,911,220
Two years before current year		1,613,532		1,613,532		803,531
Three years before current year		670,215		670,215		570,940
Four years before current year		480,416		480,416		322,745
Prior		1,239,192		1,239,192		1,176,989
Revolving loans amortized cost basis		2,105,647		2,105,647		2,212,963
Revolving loans converted to term		220,270		220,270		0
Loans and leases receivable		12,463,485		12,463,485		13,144,894
Current year, charge-offs		2,125		5,613
Fiscal year before current year, charge-offs		7,365		17,406
Two years before current fiscal year, charge-offs		5,728		18,242
Three years before current fiscal year, charge-offs		10,102		13,221
Four years before current fiscal year, charge-offs		2,078		5,568
Prior, charge-offs		2,622		9,663
Revolving loans amortized cost basis, charge-offs		0		0
Revolving loans converted to term, charge-offs		0		0
Allowance for credit losses on FDIC PCD loans, excluding charge-offs	$ 8,700
Loans and leases receivable, charge-offs		30,020	$ 21,484	69,713	$ 45,935
Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		137,100		137,100		998,200
Loans and leases receivable, charge-offs				7,000
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		10,973,327		10,973,327		11,223,927
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		1,490,158		1,490,158		1,920,967
Commercial loans and leases receivable | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		1,101,371		1,101,371		5,193,155
Fiscal year before current year		4,275,163		4,275,163		1,452,552
Two years before current year		1,263,962		1,263,962		694,873
Three years before current year		595,639		595,639		451,477
Four years before current year		407,871		407,871		301,987
Prior		1,117,527		1,117,527		1,050,269
Revolving loans amortized cost basis		1,991,524		1,991,524		2,079,614
Revolving loans converted to term		220,270		220,270		0
Loans and leases receivable		10,973,327		10,973,327		11,223,927
Current year, charge-offs		138		138
Fiscal year before current year, charge-offs		143		365
Two years before current fiscal year, charge-offs		0		23
Three years before current fiscal year, charge-offs		8,528		8,554
Four years before current fiscal year, charge-offs		0		24
Prior, charge-offs		2,237		8,509
Revolving loans amortized cost basis, charge-offs		0		0
Revolving loans converted to term, charge-offs		0		0
Loans and leases receivable, charge-offs		11,046		17,613
Commercial and industrial, including specialty lending
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		6,617,508		6,617,508		6,672,830
Loans and leases receivable, charge-offs		9,008	2,657	9,600	3,235
Commercial and industrial, including specialty lending | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		1,050,612		1,050,612		3,217,384
Fiscal year before current year		2,290,511		2,290,511		711,072
Two years before current year		566,995		566,995		271,263
Three years before current year		204,156		204,156		207,297
Four years before current year		174,852		174,852		64,786
Prior		130,165		130,165		123,143
Revolving loans amortized cost basis		1,991,524		1,991,524		2,077,885
Revolving loans converted to term		208,693		208,693		0
Loans and leases receivable		6,617,508		6,617,508		6,672,830
Current year, charge-offs		138		138
Fiscal year before current year, charge-offs		143		365
Two years before current fiscal year, charge-offs		0		23
Three years before current fiscal year, charge-offs		8,528		8,554
Four years before current fiscal year, charge-offs		0		24
Prior, charge-offs		199		496
Revolving loans amortized cost basis, charge-offs		0		0
Revolving loans converted to term, charge-offs		0		0
Loans and leases receivable, charge-offs		9,008		9,600
Commercial and industrial, including specialty lending | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		1,031,612		1,031,612		3,206,250
Fiscal year before current year		2,268,670		2,268,670		682,132
Two years before current year		522,684		522,684		242,516
Three years before current year		174,974		174,974		198,866
Four years before current year		168,998		168,998		56,572
Prior		85,084		85,084		83,417
Revolving loans amortized cost basis		1,984,328		1,984,328		2,066,349
Revolving loans converted to term		204,135		204,135		0
Loans and leases receivable		6,440,485		6,440,485		6,536,102
Commercial and industrial, including specialty lending | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		19,000		19,000		11,134
Fiscal year before current year		3,379		3,379		6,023
Two years before current year		18,923		18,923		27,780
Three years before current year		1,986		1,986		0
Four years before current year		0		0		1,501
Prior		272		272		172
Revolving loans amortized cost basis		3,088		3,088		2,599
Revolving loans converted to term		4,558		4,558		0
Loans and leases receivable		51,206		51,206		49,209
Commercial and industrial, including specialty lending | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		18,462		18,462		22,917
Two years before current year		25,388		25,388		967
Three years before current year		27,196		27,196		8,431
Four years before current year		5,854		5,854		6,713
Prior		44,809		44,809		39,554
Revolving loans amortized cost basis		4,108		4,108		8,937
Revolving loans converted to term		0		0		0
Loans and leases receivable		125,817		125,817		87,519
Commercial and industrial, including specialty lending | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		0		0		0
Multifamily
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		2,130,213		2,130,213		2,213,019
Loans and leases receivable, charge-offs		1,999	0	3,447	1,990
Multifamily | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		778		778		1,260,544
Fiscal year before current year		1,242,054		1,242,054		365,547
Two years before current year		360,505		360,505		130,656
Three years before current year		128,185		128,185		22,167
Four years before current year		21,610		21,610		117,171
Prior		377,081		377,081		316,934
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		2,130,213		2,130,213		2,213,019
Current year, charge-offs		0		0
Fiscal year before current year, charge-offs		0		0
Two years before current fiscal year, charge-offs		0		0
Three years before current fiscal year, charge-offs		0		0
Four years before current fiscal year, charge-offs		0		0
Prior, charge-offs		1,999		3,447
Revolving loans amortized cost basis, charge-offs		0		0
Revolving loans converted to term, charge-offs		0		0
Loans and leases receivable, charge-offs		1,999		3,447
Multifamily | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		778		778		1,260,544
Fiscal year before current year		1,242,054		1,242,054		364,047
Two years before current year		359,025		359,025		130,656
Three years before current year		128,185		128,185		22,167
Four years before current year		21,610		21,610		112,212
Prior		260,432		260,432		203,215
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		2,012,084		2,012,084		2,092,841
Multifamily | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		4,959
Prior		74,509		74,509		50,858
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		74,509		74,509		55,817
Multifamily | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		1,500
Two years before current year		1,480		1,480		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		42,140		42,140		62,861
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		43,620		43,620		64,361
Multifamily | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		0		0		0
Commercial real estate owner occupied loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		794,815		794,815		885,339
Loans and leases receivable, charge-offs		39	0	39	0
Commercial real estate owner occupied loans: | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		25,225		25,225		293,096
Fiscal year before current year		257,777		257,777		220,515
Two years before current year		196,874		196,874		105,925
Three years before current year		88,803		88,803		90,886
Four years before current year		82,437		82,437		44,899
Prior		143,699		143,699		130,018
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		794,815		794,815		885,339
Current year, charge-offs		0		0
Fiscal year before current year, charge-offs		0		0
Two years before current fiscal year, charge-offs		0		0
Three years before current fiscal year, charge-offs		0		0
Four years before current fiscal year, charge-offs		0		0
Prior, charge-offs		39		39
Revolving loans amortized cost basis, charge-offs		0		0
Revolving loans converted to term, charge-offs		0		0
Loans and leases receivable, charge-offs		39		39
Commercial real estate owner occupied loans: | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		25,225		25,225		293,096
Fiscal year before current year		257,777		257,777		220,515
Two years before current year		181,397		181,397		105,925
Three years before current year		88,803		88,803		90,752
Four years before current year		82,090		82,090		34,196
Prior		126,363		126,363		121,616
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		761,655		761,655		866,100
Commercial real estate owner occupied loans: | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		15,477		15,477		0
Three years before current year		0		0		0
Four years before current year		0		0		134
Prior		523		523		1,841
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		16,000		16,000		1,975
Commercial real estate owner occupied loans: | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		134
Four years before current year		347		347		10,569
Prior		16,813		16,813		6,561
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		17,160		17,160		17,264
Commercial real estate owner occupied loans: | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year						0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		0		0		0
Commercial real estate non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		1,178,203		1,178,203		1,290,730
Loans and leases receivable, charge-offs		0	4,862	4,527	5,025
Commercial real estate non-owner occupied | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		3,710		3,710		349,954
Fiscal year before current year		333,677		333,677		119,304
Two years before current year		116,015		116,015		177,492
Three years before current year		172,707		172,707		102,483
Four years before current year		99,674		99,674		70,435
Prior		452,420		452,420		471,062
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		1,178,203		1,178,203		1,290,730
Current year, charge-offs		0		0
Fiscal year before current year, charge-offs		0		0
Two years before current fiscal year, charge-offs		0		0
Three years before current fiscal year, charge-offs		0		0
Four years before current fiscal year, charge-offs		0		0
Prior, charge-offs		0		4,527
Revolving loans amortized cost basis, charge-offs		0		0
Revolving loans converted to term, charge-offs		0		0
Loans and leases receivable, charge-offs		0		4,527
Commercial real estate non-owner occupied | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		3,710		3,710		339,044
Fiscal year before current year		322,767		322,767		119,304
Two years before current year		116,015		116,015		156,281
Three years before current year		151,875		151,875		73,827
Four years before current year		71,562		71,562		62,237
Prior		371,130		371,130		386,235
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		1,037,059		1,037,059		1,136,928
Commercial real estate non-owner occupied | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		21,211
Three years before current year		20,832		20,832		0
Four years before current year		17,433		17,433		0
Prior		9,209		9,209		10,617
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		47,474		47,474		31,828
Commercial real estate non-owner occupied | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		10,910
Fiscal year before current year		10,910		10,910		0
Two years before current year		0		0		0
Three years before current year		0		0		28,656
Four years before current year		10,679		10,679		8,198
Prior		72,081		72,081		74,210
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		93,670		93,670		121,974
Commercial real estate non-owner occupied | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		0		0		0
Construction loans:
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		252,588		252,588		162,009
Loans and leases receivable, charge-offs		0	0	0	0
Construction loans: | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		21,046		21,046		72,177
Fiscal year before current year		151,144		151,144		36,114
Two years before current year		23,573		23,573		9,537
Three years before current year		1,788		1,788		28,644
Four years before current year		29,298		29,298		4,696
Prior		14,162		14,162		9,112
Revolving loans amortized cost basis		0		0		1,729
Revolving loans converted to term		11,577		11,577		0
Loans and leases receivable		252,588		252,588		162,009
Current year, charge-offs		0		0
Fiscal year before current year, charge-offs		0		0
Two years before current fiscal year, charge-offs		0		0
Three years before current fiscal year, charge-offs		0		0
Four years before current fiscal year, charge-offs		0		0
Prior, charge-offs		0		0
Revolving loans amortized cost basis, charge-offs		0		0
Revolving loans converted to term, charge-offs		0		0
Loans and leases receivable, charge-offs		0		0
Construction loans: | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		20,906		20,906		72,177
Fiscal year before current year		151,144		151,144		36,114
Two years before current year		23,573		23,573		9,537
Three years before current year		1,788		1,788		28,644
Four years before current year		29,298		29,298		4,696
Prior		14,162		14,162		9,112
Revolving loans amortized cost basis		0		0		1,729
Revolving loans converted to term		11,577		11,577		0
Loans and leases receivable		252,448		252,448		162,009
Construction loans: | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		140		140		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		140		140		0
Construction loans: | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		0		0		0
Construction loans: | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		0		0		0
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		0		0		0
Consumer loans | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		179,157		179,157		953,351
Fiscal year before current year		578,522		578,522		458,668
Two years before current year		349,570		349,570		108,658
Three years before current year		74,576		74,576		119,463
Four years before current year		72,545		72,545		20,758
Prior		121,665		121,665		126,720
Revolving loans amortized cost basis		114,123		114,123		133,349
Revolving loans converted to term		0		0		0
Loans and leases receivable		1,490,158		1,490,158		1,920,967
Current year, charge-offs		1,987		5,475
Fiscal year before current year, charge-offs		7,222		17,041
Two years before current fiscal year, charge-offs		5,728		18,219
Three years before current fiscal year, charge-offs		1,574		4,667
Four years before current fiscal year, charge-offs		2,078		5,544
Prior, charge-offs		385		1,154
Revolving loans amortized cost basis, charge-offs		0		0
Revolving loans converted to term, charge-offs		0		0
Loans and leases receivable, charge-offs		18,974		52,100
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		483,133		483,133		497,952
Loans and leases receivable, charge-offs		42	0	69	4
Residential real estate | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		12,592		12,592		162,488
Fiscal year before current year		176,249		176,249		148,583
Two years before current year		134,919		134,919		7,462
Three years before current year		6,750		6,750		17,569
Four years before current year		16,193		16,193		12,164
Prior		76,654		76,654		81,119
Revolving loans amortized cost basis		59,776		59,776		68,567
Revolving loans converted to term		0		0		0
Loans and leases receivable		483,133		483,133		497,952
Current year, charge-offs		0		0
Fiscal year before current year, charge-offs		0		0
Two years before current fiscal year, charge-offs		0		0
Three years before current fiscal year, charge-offs		0		0
Four years before current fiscal year, charge-offs		0		0
Prior, charge-offs		42		69
Revolving loans amortized cost basis, charge-offs		0		0
Revolving loans converted to term, charge-offs		0		0
Loans and leases receivable, charge-offs		42		69
Residential real estate | Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		12,592		12,592		162,217
Fiscal year before current year		175,897		175,897		148,217
Two years before current year		134,100		134,100		7,224
Three years before current year		6,519		6,519		17,128
Four years before current year		15,769		15,769		10,739
Prior		72,798		72,798		77,762
Revolving loans amortized cost basis		59,589		59,589		67,782
Revolving loans converted to term		0		0		0
Loans and leases receivable		477,264		477,264		491,069
Residential real estate | Consumer | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		271
Fiscal year before current year		352		352		366
Two years before current year		819		819		238
Three years before current year		231		231		441
Four years before current year		424		424		1,425
Prior		3,856		3,856		3,357
Revolving loans amortized cost basis		187		187		785
Revolving loans converted to term		0		0		0
Loans and leases receivable		5,869		5,869		6,883
Manufactured housing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		40,129		40,129		45,076
Loans and leases receivable, charge-offs		0	0	0	0
Manufactured housing | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		213
Four years before current year		195		195		103
Prior		39,934		39,934		44,760
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		40,129		40,129		45,076
Current year, charge-offs		0		0
Fiscal year before current year, charge-offs		0		0
Two years before current fiscal year, charge-offs		0		0
Three years before current fiscal year, charge-offs		0		0
Four years before current fiscal year, charge-offs		0		0
Prior, charge-offs		0		0
Revolving loans amortized cost basis, charge-offs		0		0
Revolving loans converted to term, charge-offs		0		0
Loans and leases receivable, charge-offs		0		0
Manufactured housing | Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		213
Four years before current year		195		195		103
Prior		37,013		37,013		41,918
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		37,208		37,208		42,234
Manufactured housing | Consumer | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0		0		0
Fiscal year before current year		0		0		0
Two years before current year		0		0		0
Three years before current year		0		0		0
Four years before current year		0		0		0
Prior		2,921		2,921		2,842
Revolving loans amortized cost basis		0		0		0
Revolving loans converted to term		0		0		0
Loans and leases receivable		2,921		2,921		2,842
Installment
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		966,896		966,896		1,377,939
Loans and leases receivable, charge-offs		18,932	$ 13,965	52,031	$ 35,681
Installment | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		166,565		166,565		790,863
Fiscal year before current year		402,273		402,273		310,085
Two years before current year		214,651		214,651		101,196
Three years before current year		67,826		67,826		101,681
Four years before current year		56,157		56,157		8,491
Prior		5,077		5,077		841
Revolving loans amortized cost basis		54,347		54,347		64,782
Revolving loans converted to term		0		0		0
Loans and leases receivable		966,896		966,896		1,377,939
Current year, charge-offs		1,987		5,475
Fiscal year before current year, charge-offs		7,222		17,041
Two years before current fiscal year, charge-offs		5,728		18,219
Three years before current fiscal year, charge-offs		1,574		4,667
Four years before current fiscal year, charge-offs		2,078		5,544
Prior, charge-offs		343		1,085
Revolving loans amortized cost basis, charge-offs		0		0
Revolving loans converted to term, charge-offs		0		0
Loans and leases receivable, charge-offs		18,932		52,031
Installment | Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		165,527		165,527		785,699
Fiscal year before current year		398,708		398,708		305,729
Two years before current year		212,516		212,516		100,173
Three years before current year		67,474		67,474		100,570
Four years before current year		55,564		55,564		8,430
Prior		5,000		5,000		782
Revolving loans amortized cost basis		54,232		54,232		64,690
Revolving loans converted to term		0		0		0
Loans and leases receivable		959,021		959,021		1,366,073
Installment | Consumer | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		1,038		1,038		5,164
Fiscal year before current year		3,565		3,565		4,356
Two years before current year		2,135		2,135		1,023
Three years before current year		352		352		1,111
Four years before current year		593		593		61
Prior		77		77		59
Revolving loans amortized cost basis		115		115		92
Revolving loans converted to term		0		0		0
Loans and leases receivable		7,875		7,875		11,866
Specialty lending | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable		5,422,161		5,422,161		$ 5,412,887
Charge-off of certain PCD loans		$ 6,200		$ 6,200

Loans and Leases Receivable _12

Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Schedule of Loan Purchases and Sales (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jun. 30, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases		$ 101,735	$ 137,814	$ 750,400	$ 368,776
Sales		$ 12,396	$ 502,201	$ 535,832	$ 536,920
Purchase price as a percentage of loans outstanding		100%	99.90%	87.70%	98.70%
Gain (loss) on sale of loans held-for-investment and loans held-for-sale		$ (200)		$ 200
Gain (loss) on sale of SBA and other loans		(348)	$ 106	(1,109)	$ 3,155
Loss on sale of capital call lines of credit		0	0	5,037	0
Carrying value of consumer loans sold			521,800		521,800
Net loss on sale of loans			23,500		23,500
Proceeds from sales of loans and leases				409,503	136,920
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from sales of loans and leases			100,700		100,700
Variable Interest Entity, Not Primary Beneficiary
Accounts, Notes, Loans and Financing Receivable [Line Items]
Asset-backed securities collateralized by loans sold			400,000		400,000
Proceeds from sales of loans and leases	$ 115,100
Specialty lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases		0	0	631,252	0
Sales		0	2,200	287,185	2,200
Loss on sale of capital call lines of credit				5,000
Capital calls lines of credit				670,000
Specialty lending | Loans Held-for-Investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Capital calls lines of credit				280,700
Specialty lending | Unfunded Loan Commitment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Capital calls lines of credit				389,300
Other commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases		4,977	0	15,285	0
Sales		6,725	0	54,083	22,880
Commercial real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases		0	0	2,867	0
Sales		5,671	0	24,522	8,960
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases		0	15,067	4,238	170,022
Personal installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases		0	47,778	0	123,785
Sales		0	500,001	0	500,001
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sales		0	0	0	2,879
Commercial real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sales		0	0	16,000	0
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases		96,758	74,969	96,758	74,969
Sales		$ 0	$ 0	$ 154,042	$ 0

Leases - Lessee Narrative (Deta

Leases - Lessee Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Lessee, Lease, Description [Line Items]
Lessee, operating lease, renewal term	10 years		10 years
Operating cash flows from operating leases	$ 1.3	$ 1.2	$ 4.4	$ 3.6
Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, remaining lease term	3 months		3 months
Lessee, operating lease, term	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, remaining lease term	10 years		10 years
Lessee, operating lease, term	10 years		10 years

Leases - Right-of-Use Assets an

Leases - Right-of-Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
ASSETS
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Operating lease ROU assets	$ 16,755	$ 16,133
LIABILITIES
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other Liabilities	Other Liabilities
Operating lease liabilities	$ 19,222	$ 19,046

Leases - Lease, Cost (Details)

Leases - Lease, Cost (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Leases [Abstract]
Operating lease cost	$ 1,260,000	$ 1,137,000	$ 3,775,000	$ 3,352,000
Variable lease cost	$ 0	$ 0	$ 0	$ 0

Leases - Maturities of Non-Canc

Leases - Maturities of Non-Cancelable Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Leases [Abstract]
2023	$ 1,334
2024	4,786
2025	3,745
2026	2,977
2027	2,469
Thereafter	5,625
Total minimum payments	20,936
Less: interest	1,714
Present value of lease liabilities	$ 19,222	$ 19,046

Leases - Summary of Lease Term

Leases - Summary of Lease Term and Discount Rate (Details)	Sep. 30, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease, weighted average remaining lease term (years)	5 years 8 months 12 days	5 years 1 month 6 days
Operating lease, weighted average discount rate, percent	3.24%	2.85%

Leases - Lessor Narrative (Deta

Leases - Lessor Narrative (Details)	Sep. 30, 2023
Minimum
Lessor, Lease, Description [Line Items]
Lessor, lease, term of contract (years)	24 months
Maximum
Lessor, Lease, Description [Line Items]
Lessor, lease, term of contract (years)	120 months

Leases - Lessor, Lease Receivab

Leases - Lessor, Lease Receivables and Investment in Operating Leases and their Corresponding Balance Sheet Location (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Direct financing leases
Lease receivables	$ 175,931	$ 140,182
Guaranteed residual assets	14,211	12,370
Unguaranteed residual assets	9,551	7,555
Deferred initial direct costs	977	667
Unearned income	(6,840)	(3,404)
Net investment in direct financing leases	193,830	157,370
Operating leases
Investment in operating leases	264,595	248,454
Accumulated depreciation	(72,512)	(52,585)
Deferred initial direct costs	1,270	1,461
Net investment in operating leases	193,353	197,330
Total lease assets	$ 387,183	$ 354,700

Leases - Schedule of Operating

Leases - Schedule of Operating Lease and Direct Financing Receivables (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Operating leases
2023	$ 9,705
2024	38,612
2025	34,976
2026	39,906
2027	29,824
Thereafter	69,025
Total minimum payments	222,048
Direct financing leases
2023	11,562
2024	46,214
2025	36,992
2026	29,175
2027	24,254
Thereafter	28,840
Total minimum payments	177,037
Less: interest	1,106
Present value of lease receivables	$ 175,931

Deposits - Components of Deposi

Deposits - Components of Deposits (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Deposits, by Component, Alternative [Abstract]
Demand, non-interest bearing	$ 4,758,682	$ 1,885,045
Demand, interest bearing	5,824,410	8,476,027
Savings, including money market deposit accounts	3,617,946	3,546,015
Time	3,994,326	4,249,866
Total deposits	$ 18,195,364	$ 18,156,953

Deposits - Schedule of Time Dep

Deposits - Schedule of Time Deposit Maturities (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Deposit [Abstract]
2023	$ 864,722
2024	2,457,137
2025	165,024
2026	360,201
2027	59,783
Thereafter	87,459
Total time deposits	$ 3,994,326	$ 4,249,866

Deposits - Narrative (Detail)

Deposits - Narrative (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Deposit Liability [Line Items]
Time deposits greater than $250,000	$ 160.4	$ 85.5
Demand deposit overdrafts reclassified as loans	4.1	$ 3.7
State and municipal deposits	591.3
Asset Pledged as Collateral
Deposit Liability [Line Items]
Available borrowing capacity through FHLB	$ 599.4

Borrowings - Short-term Borrowi

Borrowings - Short-term Borrowings (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Short-term Debt [Line Items]
Total short-term debt	$ 0	$ 300,000
FHLB advances
Short-term Debt [Line Items]
Total short-term debt	$ 0	$ 300,000
FHLB advances, rate	0%	4.54%

Borrowings - Summary of Bancorp

Borrowings - Summary of Bancorp's Short-term Borrowings (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Federal Reserve Bank Advances
Short-term Debt [Line Items]
Maximum outstanding at any month end	$ 0	$ 0
Average balance during the period	$ 160,571	$ 0
Weighted-average interest rate during the period	5.23%	0%
FHLB advances
Short-term Debt [Line Items]
Maximum outstanding at any month end	$ 0	$ 775,000
Average balance during the period	$ 116,862	$ 144,918
Weighted-average interest rate during the period	5.16%	1.07%
Federal Funds Purchased
Short-term Debt [Line Items]
Maximum outstanding at any month end	$ 0	$ 895,000
Average balance during the period	$ 5,055	$ 349,581
Weighted-average interest rate during the period	4.97%	1.66%

Borrowings - Narrative (Detail)

Borrowings - Narrative (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Bank Term Funding Program
Debt Instrument [Line Items]
Aggregate availability under federal funds line	$ 484.9
Federal Funds Purchased
Debt Instrument [Line Items]
Aggregate availability under federal funds line	$ 1,700	$ 1,700

Borrowings - FHLB and FRB Advan

Borrowings - FHLB and FRB Advances (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
FHLB advances	$ 1,540,000
Amount
2024	250,000
2025	200,000
2026	540,000
2027	450,000
Thereafter	100,000
FHLB advances	$ 1,540,000
Rate
2024	3.44%
2025	4.45%
2026	5.54%
2027	3.70%
Thereafter	4.19%
Total maximum borrowing capacity with the FHLB	$ 3,393,013	$ 3,241,120
Total maximum borrowing capacity with the FRB	5,013,377	2,510,189
Loans and leases receivable	12,463,485	13,144,894
Qualifying Assets Pledged As Collateral
Rate
Loans and leases receivable	10,050,340	7,142,865
FHLB advances
Debt Instrument [Line Items]
Total long-term debt	$ 1,529,839	$ 500,000
FHLB advances, rate	4.43%	3.37%
Unamortized basis adjustments from interest rate swaps designated as fair value hedges of long-term advances from FHLB	$ 10,200
FHLB Advance Due September 2026
Debt Instrument [Line Items]
FHLB advances	590,000
Amount
FHLB advances	590,000
FHLB Advance Due March 2028
Debt Instrument [Line Items]
FHLB advances	950,000
Amount
FHLB advances	$ 950,000

Borrowings - Long-term Debt (De

Borrowings - Long-term Debt (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Senior Notes
Debt Instrument [Line Items]
Carrying Amount	$ 123,775,000	$ 123,580,000
Senior Subordinated Notes
Debt Instrument [Line Items]
Carrying Amount	182,161,000	181,952,000
Maturing August 2031 | Senior Notes
Debt Instrument [Line Items]
Carrying Amount	$ 98,893,000	98,788,000
Rate	2.875%
Issued Amount	$ 100,000,000
Price	100%
Maturing September 2024 | Senior Notes
Debt Instrument [Line Items]
Carrying Amount	$ 24,882,000	24,792,000
Rate	4.50%
Issued Amount	$ 25,000,000
Price	100%
Maturing December 2034 | Senior Subordinated Notes
Debt Instrument [Line Items]
Carrying Amount	$ 72,721,000	72,585,000
Rate	5.375%
Issued Amount	$ 74,750,000
Price	100%
Maturing June 2029 | Senior Subordinated Notes
Debt Instrument [Line Items]
Carrying Amount	$ 109,440,000	$ 109,367,000
Rate	6.125%
Issued Amount	$ 110,000,000
Price	100%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maturing August 2031 | Senior Notes
Debt Instrument [Line Items]
Spread on variable interest rate	2.35%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maturing June 2029 | Senior Subordinated Notes
Debt Instrument [Line Items]
Spread on variable interest rate	0.26161%
London Interbank Offered Rate (LIBOR) | Maturing June 2029 | Senior Subordinated Notes
Debt Instrument [Line Items]
Spread on variable interest rate	3.443%

Shareholders' Equity - Narrativ

Shareholders' Equity - Narrative (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 series shares	Sep. 30, 2022 shares	Sep. 30, 2023 USD ($) series shares	Sep. 30, 2022 USD ($) shares	Dec. 31, 2022 series	Aug. 25, 2021 shares
Capital Unit [Line Items]
Stock repurchase program, number of shares authorized to be repurchased						3,235,326
Percentage of company's outstanding shares						10%
Repurchase of common shares (in shares)	0	0	1,379,883	664,145
Repurchase of common shares | $			$ 39,806	$ 27,820
Preferred stock, number of series outstanding | series	2		2		2
London Interbank Offered Rate (LIBOR) | Series E Preferred Stock
Capital Unit [Line Items]
Preferred stock dividend rate, basis spread of variable rate			5.14%
London Interbank Offered Rate (LIBOR) | Series F Preferred Stock
Capital Unit [Line Items]
Preferred stock dividend rate, basis spread of variable rate			4.762%

Shareholders' Equity - Preferre

Shareholders' Equity - Preferred Stock and Dividends Paid Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Capital Unit [Line Items]
Preferred stock, shares issued (shares)	5,700,000		5,700,000		5,700,000
Preferred stock, value	$ 137,794		$ 137,794		$ 137,794
Series E Preferred Stock
Capital Unit [Line Items]
Preferred stock, shares issued (shares)	2,300,000		2,300,000		2,300,000
Preferred stock, value	$ 55,593		$ 55,593		$ 55,593
Initial Fixed Rate			6.45%
Preferred stock, dividends, per share, cash paid (usd per share)	$ 0.6831	$ 0.445233	$ 1.941704	$ 1.160316
Series E Preferred Stock | London Interbank Offered Rate (LIBOR)
Capital Unit [Line Items]
Floating rate of Three-Month LIBOR Plus:			5.14%
Series F Preferred Stock
Capital Unit [Line Items]
Preferred stock, shares issued (shares)	3,400,000		3,400,000		3,400,000
Preferred stock, value	$ 82,201		$ 82,201		$ 82,201
Initial Fixed Rate			6%
Preferred stock, dividends, per share, cash paid (usd per share)	$ 0.658950	$ 0.421083	$ 1.869779	$ 1.088391
Series F Preferred Stock | London Interbank Offered Rate (LIBOR)
Capital Unit [Line Items]
Floating rate of Three-Month LIBOR Plus:			4.762%

Regulatory Capital - Narrative

Regulatory Capital - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2021
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer to risk weighted assets	2.50%
Cumulative Effect, Period of Adoption, Adjustment
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Cumulative capital transition impact		$ 61.6
Capital transition provisions, benefit recognized, excluding amount previously phased in	$ 30.8

Regulatory Capital - Summary of

Regulatory Capital - Summary of Capital Amounts, Tier 1 Risk Based and Tier 1 Leveraged Ratios (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital (to risk weighted assets), Actual Amount	$ 1,596,157	$ 1,470,837
Tier 1 capital (to risk weighted assets), Actual Amount	1,733,950	1,608,630
Total capital (to risk weighted assets), Actual Amount	2,015,526	1,862,089
Tier 1 capital (to average assets), Actual Amount	$ 1,733,950	$ 1,608,630
Common equity Tier 1 (to risk weighted assets), Actual Ratio	11.305%	9.637%
Tier 1 capital (to risk weighted assets), Actual Ratio	0.12281	0.10539
Total capital (to risk weighted assets), Actual Ratio	0.14275	0.12200
Tier 1 capital (to average assets), Actual Ratio	0.07805	0.07664
Common equity Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Amount	$ 635,353	$ 686,838
Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Amount	847,137	915,784
Total capital (to risk weighted assets), For Capital Adequacy Purposes Amount	1,129,516	1,221,045
Tier 1 capital (to average assets), For Capital Adequacy Purposes Amount	$ 888,675	$ 839,547
Common equity Tier 1 (to risk weighted assets), For Capital Adequacy Purposes Ratio	4.50%	4.50%
Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Ratio	0.06000	0.06000
Total capital (to risk weighted assets), For Capital Adequacy Purposes Ratio	0.08000	0.08000
Tier 1 capital (to average assets), For Capital Adequacy Purposes Ratio	0.04000	0.04000
Common equity Tier 1 (to risk weighted assets), for Basel III amount	$ 988,327	$ 1,068,415
Tier 1 (to risk weighted assets) Required for Basel III amount	1,200,111	1,297,361
Total capital (to risk weighted assets), for Basel III amount	1,482,490	1,602,622
Tier 1 (to risk average assets), for Basel III amount	$ 888,675	$ 839,547
Common equity Tier 1 (to risk weighted assets), for Basel III ratio	7%	7%
Tier 1 capital (to risk weighted assets), for Basel III ratio	8.50%	8.50%
Total capital (to risk weighted assets), for Basel III ratio	10.50%	10.50%
Tier 1 capital (to average assets), for Basel III ratio	4%	4%
Customers Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital (to risk weighted assets), Actual Amount	$ 1,830,143	$ 1,708,598
Tier 1 capital (to risk weighted assets), Actual Amount	1,830,143	1,708,598
Total capital (to risk weighted assets), Actual Amount	2,038,998	1,889,472
Tier 1 capital (to average assets), Actual Amount	$ 1,830,143	$ 1,708,598
Common equity Tier 1 (to risk weighted assets), Actual Ratio	12.974%	11.213%
Tier 1 capital (to risk weighted assets), Actual Ratio	0.12974	0.11213
Total capital (to risk weighted assets), Actual Ratio	0.14455	0.12400
Tier 1 capital (to average assets), Actual Ratio	0.08246	0.08150
Common equity Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Amount	$ 634,762	$ 685,694
Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Amount	846,349	914,259
Total capital (to risk weighted assets), For Capital Adequacy Purposes Amount	1,128,466	1,219,012
Tier 1 capital (to average assets), For Capital Adequacy Purposes Amount	$ 887,727	$ 838,611
Common equity Tier 1 (to risk weighted assets), For Capital Adequacy Purposes Ratio	4.50%	4.50%
Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Ratio	0.06000	0.06000
Total capital (to risk weighted assets), For Capital Adequacy Purposes Ratio	0.08000	0.08000
Tier 1 capital (to average assets), For Capital Adequacy Purposes Ratio	0.04000	0.04000
Common equity Tier 1 Capital (to risk weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 916,878	$ 990,447
Tier 1 capital (to risk weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	1,128,466	1,219,012
Total capital (to risk weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	1,410,582	1,523,765
Tier 1 capital (to average assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 1,109,658	$ 1,048,264
Common equity Tier 1 (to risk weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	6.50%	6.50%
Tier 1 capital (to risk weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	0.08000	0.08000
Total capital (to risk weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	0.10000	0.10000
Tier 1 capital (to average assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	0.05000	0.05000
Common equity Tier 1 (to risk weighted assets), for Basel III amount	$ 987,408	$ 1,066,636
Tier 1 (to risk weighted assets) Required for Basel III amount	1,198,995	1,295,201
Total capital (to risk weighted assets), for Basel III amount	1,481,111	1,599,954
Tier 1 (to risk average assets), for Basel III amount	$ 887,727	$ 838,611
Common equity Tier 1 (to risk weighted assets), for Basel III ratio	7%	7%
Tier 1 capital (to risk weighted assets), for Basel III ratio	8.50%	8.50%
Total capital (to risk weighted assets), for Basel III ratio	10.50%	10.50%
Tier 1 capital (to average assets), for Basel III ratio	4%	4%

Disclosures About Fair Value _3

Disclosures About Fair Value of Financial Instruments - Narrative (Detail)	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Loans held for sale, number of days held prior to sale (up to)	90 days
Loans held for sale, average life from purchase to sale	30 days

Disclosures About Fair Value _4

Disclosures About Fair Value of Financial Instruments - Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets:
Cash and cash equivalents, Carrying Amount	$ 3,419,974	$ 455,806
Cash and cash equivalents, Estimated Fair Value	3,419,974	455,806
Debt securities, available for sale	2,746,728	2,961,015
Debt securities, held to maturity	1,178,370	840,259
Debt securities, held to maturity, fair value	1,115,576	793,813
Loans held for sale	150,368	328,312
Total loans and leases receivable, net of allowance for credit losses on loans and leases	13,423,901	15,335,435
Total loans and leases receivable, net of allowance for credit losses on loans and leases, Estimated Fair Value	13,052,491	14,890,823
FHLB, Federal Reserve Bank and other restricted stock, Carrying Amount	126,098	74,196
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value	126,098	74,196
Derivative assets	28,475	44,435
Liabilities:
Deposits held	18,195,364	18,156,953
Deposits, Estimated Fair Value	18,171,737	18,127,338
FHLB advances, Carrying Amount	1,529,839	800,000
FHLB advances, Estimated Fair Value	1,507,761	781,113
Other borrowings, Carrying Amount	123,775	123,580
Other borrowings, Estimated Fair Value	103,388	108,081
Subordinated debt, Carrying Amount	182,161	181,952
Subordinated debt, Estimated Fair Value	160,712	168,441
Derivative liabilities	41,433	42,106
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Cash and cash equivalents, Estimated Fair Value	3,419,974	455,806
Debt securities, available for sale	0	0
Debt securities, held to maturity, fair value	0	0
Loans held for sale	0	0
Total loans and leases receivable, net of allowance for credit losses on loans and leases, Estimated Fair Value	0	0
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value	0	0
Derivative assets	0	0
Liabilities:
Deposits, Estimated Fair Value	14,201,038	13,907,087
FHLB advances, Estimated Fair Value	0	0
Other borrowings, Estimated Fair Value	0	0
Subordinated debt, Estimated Fair Value	0	0
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2)
Assets:
Cash and cash equivalents, Estimated Fair Value	0	0
Debt securities, available for sale	2,704,363	2,887,749
Debt securities, held to maturity, fair value	475,388	437,680
Loans held for sale	1,005	322
Total loans and leases receivable, net of allowance for credit losses on loans and leases, Estimated Fair Value	962,566	1,323,312
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value	126,098	74,196
Derivative assets	28,421	44,380
Liabilities:
Deposits, Estimated Fair Value	3,970,699	4,220,251
FHLB advances, Estimated Fair Value	1,507,761	781,113
Other borrowings, Estimated Fair Value	103,388	108,081
Subordinated debt, Estimated Fair Value	160,712	168,441
Derivative liabilities	41,433	42,106
Significant Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents, Estimated Fair Value	0	0
Debt securities, available for sale	42,365	73,266
Debt securities, held to maturity, fair value	640,188	356,133
Loans held for sale	149,363	327,990
Total loans and leases receivable, net of allowance for credit losses on loans and leases, Estimated Fair Value	12,089,925	13,567,511
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value	0	0
Derivative assets	54	55
Liabilities:
Deposits, Estimated Fair Value	0	0
FHLB advances, Estimated Fair Value	0	0
Other borrowings, Estimated Fair Value	0	0
Subordinated debt, Estimated Fair Value	0	0
Derivative liabilities	$ 0	$ 0

Disclosures About Fair Value _5

Disclosures About Fair Value of Financial Instruments - Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets
Fair Value	$ 2,746,728	$ 2,961,015
Fair Value, Measurements, Recurring
Assets
Assets, fair value	3,763,289	4,329,084
Fair Value, Measurements, Nonrecurring
Assets
Assets, fair value	3,515	4,819
Asset-backed securities
Assets
Fair Value	104,716	160,542
Asset-backed securities | Fair Value, Measurements, Recurring
Assets
Fair Value	104,716	160,542
Agency-guaranteed residential collateralized mortgage obligations
Assets
Fair Value	118,469	133,864
Agency-guaranteed residential collateralized mortgage obligations | Fair Value, Measurements, Recurring
Assets
Fair Value	118,469	133,864
Collateralized loan obligations
Assets
Fair Value	815,856	872,738
Collateralized loan obligations | Fair Value, Measurements, Recurring
Assets
Fair Value	815,856	872,738
Commercial mortgage-backed securities
Assets
Fair Value	131,188	136,357
Commercial mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Fair Value	131,188	136,357
Corporate notes
Assets
Fair Value	578,897	595,253
Corporate notes | Fair Value, Measurements, Recurring
Assets
Fair Value	578,897	595,253
Private label collateralized mortgage obligations
Assets
Fair Value	997,602	1,062,261
Private label collateralized mortgage obligations | Fair Value, Measurements, Recurring
Assets
Fair Value	997,602	1,062,261
Derivatives | Fair Value, Measurements, Recurring
Assets
Assets, fair value	28,475	44,435
Loans held for sale – fair value option | Fair Value, Measurements, Recurring
Assets
Assets, fair value	25,520	322
Loans receivable, mortgage warehouse – fair value option | Fair Value, Measurements, Recurring
Assets
Assets, fair value	962,566	1,323,312
Derivatives  | Fair Value, Measurements, Recurring
Liabilities
Financial liabilities, fair value	41,433	42,106
Collateral-dependent loans | Fair Value, Measurements, Nonrecurring
Assets
Assets, fair value	3,515	4,819
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring
Assets
Assets, fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring
Assets
Assets, fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Asset-backed securities | Fair Value, Measurements, Recurring
Assets
Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Agency-guaranteed residential collateralized mortgage obligations | Fair Value, Measurements, Recurring
Assets
Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateralized loan obligations | Fair Value, Measurements, Recurring
Assets
Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate notes | Fair Value, Measurements, Recurring
Assets
Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Private label collateralized mortgage obligations | Fair Value, Measurements, Recurring
Assets
Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivatives | Fair Value, Measurements, Recurring
Assets
Assets, fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans held for sale – fair value option | Fair Value, Measurements, Recurring
Assets
Assets, fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans receivable, mortgage warehouse – fair value option | Fair Value, Measurements, Recurring
Assets
Assets, fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivatives  | Fair Value, Measurements, Recurring
Liabilities
Financial liabilities, fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateral-dependent loans | Fair Value, Measurements, Nonrecurring
Assets
Assets, fair value	0	0
Significant Other Observable Inputs (Level 2)
Assets
Fair Value	2,704,363	2,887,749
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Assets
Assets, fair value	3,696,355	4,255,763
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring
Assets
Assets, fair value	0	0
Significant Other Observable Inputs (Level 2) | Asset-backed securities | Fair Value, Measurements, Recurring
Assets
Fair Value	62,351	87,276
Significant Other Observable Inputs (Level 2) | Agency-guaranteed residential collateralized mortgage obligations | Fair Value, Measurements, Recurring
Assets
Fair Value	118,469	133,864
Significant Other Observable Inputs (Level 2) | Collateralized loan obligations | Fair Value, Measurements, Recurring
Assets
Fair Value	815,856	872,738
Significant Other Observable Inputs (Level 2) | Commercial mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Fair Value	131,188	136,357
Significant Other Observable Inputs (Level 2) | Corporate notes | Fair Value, Measurements, Recurring
Assets
Fair Value	578,897	595,253
Significant Other Observable Inputs (Level 2) | Private label collateralized mortgage obligations | Fair Value, Measurements, Recurring
Assets
Fair Value	997,602	1,062,261
Significant Other Observable Inputs (Level 2) | Derivatives | Fair Value, Measurements, Recurring
Assets
Assets, fair value	28,421	44,380
Significant Other Observable Inputs (Level 2) | Loans held for sale – fair value option | Fair Value, Measurements, Recurring
Assets
Assets, fair value	1,005	322
Significant Other Observable Inputs (Level 2) | Loans receivable, mortgage warehouse – fair value option | Fair Value, Measurements, Recurring
Assets
Assets, fair value	962,566	1,323,312
Significant Other Observable Inputs (Level 2) | Derivatives  | Fair Value, Measurements, Recurring
Liabilities
Financial liabilities, fair value	41,433	42,106
Significant Other Observable Inputs (Level 2) | Collateral-dependent loans | Fair Value, Measurements, Nonrecurring
Assets
Assets, fair value	0	0
Significant Unobservable Inputs (Level 3)
Assets
Fair Value	42,365	73,266
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring
Assets
Assets, fair value	66,934	73,321
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring
Assets
Assets, fair value	3,515	4,819
Significant Unobservable Inputs (Level 3) | Asset-backed securities
Assets
Fair Value	42,365	73,266
Significant Unobservable Inputs (Level 3) | Asset-backed securities | Fair Value, Measurements, Recurring
Assets
Fair Value	42,365	73,266
Significant Unobservable Inputs (Level 3) | Agency-guaranteed residential collateralized mortgage obligations | Fair Value, Measurements, Recurring
Assets
Fair Value	0	0
Significant Unobservable Inputs (Level 3) | Collateralized loan obligations | Fair Value, Measurements, Recurring
Assets
Fair Value	0	0
Significant Unobservable Inputs (Level 3) | Commercial mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Fair Value	0	0
Significant Unobservable Inputs (Level 3) | Corporate notes | Fair Value, Measurements, Recurring
Assets
Fair Value	0	0
Significant Unobservable Inputs (Level 3) | Private label collateralized mortgage obligations | Fair Value, Measurements, Recurring
Assets
Fair Value	0	0
Significant Unobservable Inputs (Level 3) | Derivatives | Fair Value, Measurements, Recurring
Assets
Assets, fair value	54	55
Significant Unobservable Inputs (Level 3) | Loans held for sale – fair value option | Fair Value, Measurements, Recurring
Assets
Assets, fair value	24,515	0
Significant Unobservable Inputs (Level 3) | Loans receivable, mortgage warehouse – fair value option | Fair Value, Measurements, Recurring
Assets
Assets, fair value	0	0
Significant Unobservable Inputs (Level 3) | Derivatives  | Fair Value, Measurements, Recurring
Liabilities
Financial liabilities, fair value	0	0
Significant Unobservable Inputs (Level 3) | Collateral-dependent loans | Fair Value, Measurements, Nonrecurring
Assets
Assets, fair value	$ 3,515	$ 4,819

Disclosures About Fair Value _6

Disclosures About Fair Value of Financial Instruments - Statement of Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis (Detail) - Significant Unobservable Inputs (Level 3) - Asset-backed securities - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 51,825	$ 106,919	$ 73,266	$ 142,885
Principal payments and premium amortization	(10,023)	(16,852)	(31,683)	(51,348)
Increase in allowance for credit losses	(442)	0	(1,488)	(253)
Decrease in allowance for credit losses	250	158	311	0
Change in fair value recognized in OCI	755	(2,339)	1,959	(3,398)
Balance at end of period	$ 42,365	$ 87,886	$ 42,365	$ 87,886

Disclosures About Fair Value _7

Disclosures About Fair Value of Financial Instruments - Summary of Financial Assets and Financial Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis (Detail) $ in Thousands	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 2,746,728	$ 2,961,015
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	42,365	73,266
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	104,716	160,542
Asset-backed securities | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 42,365	$ 73,266
Minimum | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Discount rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.10	0.09
Minimum | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Annualized loss rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.03	0.04
Minimum | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Constant prepayment rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.12	0.19
Maximum | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Discount rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.10	0.09
Maximum | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Annualized loss rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.06	0.05
Maximum | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Constant prepayment rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.30	0.25
Weighted Average | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Discount rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.10	0.09
Weighted Average | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Annualized loss rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.05	0.05
Weighted Average | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Constant prepayment rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.25	0.23

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Additional Information (Detail) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022 USD ($) derivative	Sep. 30, 2023 USD ($) derivative	Sep. 30, 2022 USD ($) derivative	Dec. 31, 2022 USD ($) derivative
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, net liability position, aggregate fair value		$ 28,400
Cash collateral received		$ 30,300
Minimum
Derivative Instruments, Gain (Loss) [Line Items]
Derivative expiration period		30 days
Maximum
Derivative Instruments, Gain (Loss) [Line Items]
Derivative expiration period		60 days
Not Designated as Hedging Instrument | Residential mortgage loan commitments
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount		$ 2,700		$ 1,500
Interest Rate Contract
Derivative Instruments, Gain (Loss) [Line Items]
Cash collateral received		$ 28,419		$ 29,087
Interest Rate Contract | Derivative Designated as Hedging Instrument | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Number of outstanding interest rate derivatives | derivative		6		3
Aggregate notional amount		$ 472,500		$ 22,500
Number of interest rate derivatives entered into during the period | derivative		5
Number of interest rate derivatives terminated | derivative	4	2	13
Aggregate notional amount, terminated	$ 10,000	$ 550,000	$ 58,000
Notional amount of basis adjustments		4,600
Interest rate swaps | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount		$ 1,200,000		$ 1,300,000
Number of derivative instruments held | derivative		129		141
Interest rate caps | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount		$ 179,000		$ 245,800
Number of derivative instruments held | derivative		10		12
Credit contracts | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount		$ 97,600		$ 142,000

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Cumulative Basis Adjustment for Fair Value Hedges (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
AFS debt securities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amortized Cost	$ 22,500	$ 22,500
Unamortized basis adjustments from interest rate swaps designated as fair value hedges of long-term advances from FHLB	(1,331)	1,777
Deposits
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amortized Cost	300,000	0
Unamortized basis adjustments from interest rate swaps designated as fair value hedges of long-term advances from FHLB	1,787	0
FHLB advances
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amortized Cost	700,000	0
Unamortized basis adjustments from interest rate swaps designated as fair value hedges of long-term advances from FHLB	$ (10,160)	$ 0

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities - Fair Value of Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Other Assets | Derivative Designated as Hedging Instrument | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets		$ 1,777
Other Assets | Derivative Designated as Hedging Instrument | Interest rate swaps | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets		1,777
Other Assets | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	$ 28,475	42,658
Other Assets | Not Designated as Hedging Instrument | Residential mortgage loan commitments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	54	55
Other Assets | Not Designated as Hedging Instrument | Interest rate swaps and caps (1)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	28,420	42,589
Other Assets | Not Designated as Hedging Instrument | Credit contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	1	14
Other Liabilities | Derivative Designated as Hedging Instrument | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities		0
Other Liabilities | Derivative Designated as Hedging Instrument | Interest rate swaps | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities		0
Other Liabilities | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	41,433	42,106
Other Liabilities | Not Designated as Hedging Instrument | Residential mortgage loan commitments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	0	0
Other Liabilities | Not Designated as Hedging Instrument | Interest rate swaps and caps (1)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	41,428	42,076
Other Liabilities | Not Designated as Hedging Instrument | Credit contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	$ 5	$ 30

Derivative Instruments and He_6

Derivative Instruments and Hedging Activities - Effect of Derivative Financial Instruments on Net Income and Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative Designated as Hedging Instrument | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	$ 0	$ 0	$ 0	$ 0
Derivative Designated as Hedging Instrument | Interest rate swaps | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	6,377	510	13,209	3,530
Derivative Designated as Hedging Instrument | AFS debt securities | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	(196)	(510)	(446)	(3,530)
Derivative Designated as Hedging Instrument | FHLB advances | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	(6,181)	0	(12,763)	0
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	192	506	344	2,209
Not Designated as Hedging Instrument | Interest rate swaps and caps (1)
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	192	503	332	2,244
Not Designated as Hedging Instrument | Credit contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	13	60	12	104
Not Designated as Hedging Instrument | Residential mortgage loan commitments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	$ (13)	$ (57)	$ 0	$ (139)

Derivative Instruments and He_7

Derivative Instruments and Hedging Activities - Summary of Offsetting of Financial Assets and Derivative Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Offsetting Assets [Line Items]
Gross amounts not offset in the consolidated balance sheet, Cash collateral received/posted	$ (30,300)
Interest Rate Contract
Offsetting Assets [Line Items]
Gross Amounts Recognized on the Consolidated Balance Sheet	28,419	$ 29,706
Gross amounts not offset in the consolidated balance sheet, Financial instruments	0	(619)
Gross amounts not offset in the consolidated balance sheet, Cash collateral received/posted	(28,419)	(29,087)
Gross amounts not offset in the consolidated balance sheet, Net amount	$ 0	$ 0

Derivative Instruments and He_8

Derivative Instruments and Hedging Activities - Summary of Offsetting of Financial Liabilities and Derivative Liabilities (Detail) - Interest Rate Contract - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Offsetting Liabilities [Line Items]
Gross Amounts Recognized on the Consolidated Balance Sheet	$ 0	$ 619
Gross amounts not offset in the consolidated balance sheet, financial instruments	0	(619)
Gross amounts not offset in the consolidated balance sheet, Cash collateral received/posted	0	0
Gross amounts not offset in the consolidated balance sheet, Net amount	$ 0	$ 0