Customers Bancorp (CUBI) 10-Q 7 Nov 19 2019 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Oct. 31, 2019
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2019
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	1015 Penn Avenue
Entity Address, Address Line Two	Suite 103
Entity Address, City or Town	Wyomissing
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19610
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		31,320,284
Amendment Flag	false
Document Fiscal Year Focus	2019
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 | New York Stock Exchange
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 C, par value $1.00 per share | New York Stock Exchange
Entity Information [Line Items]
Title of 12(b) Security	Fixed-to-Floating Rate Non-Cumulative PerpetualPreferred Stock, Series C, par value $1.00 per share
Trading Symbol	CUBI/PC
Security Exchange Name	NYSE
Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D, par value $1.00 per share | New York Stock Exchange
Entity Information [Line Items]
Title of 12(b) Security	Fixed-to-Floating Rate Non-Cumulative PerpetualPreferred Stock, Series D, par value $1.00 per share
Trading Symbol	CUBI/PD
Security Exchange Name	NYSE
Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series E, par value $1.00 per share | New York Stock Exchange
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 | New York Stock Exchange
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

Consolidated Balance Sheet - Un

Consolidated Balance Sheet - Unaudited - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 12,555	$ 17,696
Interest-earning deposits	169,663	44,439
Cash and cash equivalents	182,218	62,135
Investment securities, at fair value	608,714	665,012
Loans held for sale (includes $1,755 and $1,507, respectively, at fair value)	502,854	1,507
Loans receivable mortgage warehouse	2,438,530	1,405,420
Loans and leases receivable	7,336,237	7,138,074
Allowance for loan and lease losses	(51,053)	(39,972)
Total loans and leases receivable, net of allowance for loan and lease losses	9,723,714	8,503,522
FHLB, Federal Reserve Bank, and other restricted stock	81,853	89,685
Accrued interest receivable	38,412	32,955
Bank premises and equipment, net	14,075	11,063
Bank-owned life insurance	270,526	264,559
Other real estate owned	204	816
Goodwill and other intangibles	15,521	16,499
Other assets	285,699	185,672
Total assets	11,723,790	9,833,425
Deposits:
Demand, non-interest bearing	1,569,918	1,122,171
Interest-bearing	7,355,767	6,020,065
Total deposits	8,925,685	7,142,236
Federal funds purchased	373,000	187,000
FHLB advances	1,040,800	1,248,070
Other borrowings	123,528	123,871
Subordinated debt	109,050	108,977
Accrued interest payable and other liabilities	132,577	66,455
Total liabilities	10,704,640	8,876,609
Commitments and contingencies (NOTE 14)
Shareholders’ equity:
Preferred stock, par value $1.00 per share; liquidation preference $25.00 per share; 100,000,000 shares authorized, 9,000,000 shares issued and outstanding as of September 30, 2019 and December 31, 2018	217,471	217,471
Common stock, par value $1.00 per share; 200,000,000 shares authorized; 32526395 and 32,252,488 shares issued as of September 30, 2019 and December 31, 2018; 31245766 and 31,003,028 shares outstanding as of September 30, 2019 and December 31, 2018	32,526	32,252
Additional paid in capital	441,499	434,314
Retained earnings	357,608	316,651
Accumulated other comprehensive loss, net	(8,174)	(22,663)
Treasury stock, at cost (1,280,619 and 1,249,460 shares as of September 30, 2019 and December 31, 2018)	(21,780)	(21,209)
Total shareholders’ equity	1,019,150	956,816
Total liabilities and shareholders’ equity	$ 11,723,790	$ 9,833,425

Consolidated Balance Sheet - _2

Consolidated Balance Sheet - Unaudited (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Loans held for sale at fair value	$ 502,854	$ 1,507
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)	9,000,000	9,000,000
Preferred stock, shares outstanding (shares)	9,000,000	9,000,000
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)	32,526,395	32,252,488
Common stock, shares outstanding (shares)	31,245,776	31,003,028
Treasury stock, shares (shares)	1,280,619	1,249,460
Significant Other Observable Inputs (Level 2)
Loans held for sale at fair value	$ 1,755	$ 1,507

Consolidated Statements of Inco

Consolidated Statements of Income - Unaudited - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest income:
Loans and leases	$ 118,444,000	$ 97,815,000	$ 315,126,000	$ 278,986,000
Investment securities	5,867,000	8,495,000	18,589,000	26,932,000
Other	2,407,000	3,735,000	6,030,000	8,731,000
Total interest income	126,718,000	110,045,000	339,745,000	314,649,000
Interest expense:
Deposits	38,267,000	32,804,000	105,472,000	76,779,000
FHLB advances	7,563,000	9,125,000	20,463,000	27,381,000
Subordinated debt	1,684,000	1,684,000	5,053,000	5,053,000
Other borrowings	3,469,000	2,431,000	9,039,000	9,082,000
Total interest expense	50,983,000	46,044,000	140,027,000	118,295,000
Net interest income	75,735,000	64,001,000	199,718,000	196,354,000
Provision for loan and lease losses	4,426,000	2,924,000	14,539,000	4,257,000
Net interest income after provision for loan and lease losses	71,309,000	61,077,000	185,179,000	192,097,000
Non-interest income:
Non-interest income	11,779,000	10,297,000	35,370,000	32,352,000
Commercial lease income	3,080,000	1,419,000	8,212,000	3,372,000
Bank-owned life insurance	1,824,000	1,869,000	5,477,000	5,769,000
Mortgage warehouse transactional fees	2,150,000	1,809,000	5,145,000	5,663,000
Gain on sale of SBA and other loans	0	1,096,000	0	3,404,000
Mortgage banking income	283,000	207,000	701,000	532,000
Loss upon acquisition of interest-only GNMA securities	0	0	(7,476,000)	0
Gain (loss) on sale of investment securities	1,001,000	(18,659,000)	1,001,000	(18,659,000)
Unrealized gain (loss) on investment securities	1,333,000	(1,236,000)	988,000	(1,532,000)
Other	3,187,000	6,493,000	9,443,000	11,718,000
Total non-interest income	23,369,000	2,084,000	55,125,000	39,120,000
Non-interest expense:
Salaries and employee benefits	27,193,000	25,462,000	79,936,000	78,135,000
Technology, communication, and bank operations	8,755,000	11,657,000	33,110,000	32,923,000
Professional services	8,348,000	4,743,000	18,639,000	14,563,000
Occupancy	3,661,000	2,901,000	9,628,000	8,876,000
Commercial lease depreciation	2,459,000	1,103,000	6,633,000	2,838,000
FDIC assessments, non-income taxes, and regulatory fees	(777,000)	2,415,000	3,368,000	6,750,000
Provision for operating losses	3,998,000	1,171,000	8,223,000	3,930,000
Advertising and promotion	976,000	820,000	3,145,000	1,529,000
Merger and acquisition related expenses	0	2,945,000	0	3,920,000
Loan workout	495,000	516,000	1,458,000	1,823,000
Other real estate owned expenses	108,000	66,000	151,000	164,000
Other	4,376,000	3,305,000	8,869,000	7,683,000
Total non-interest expense	59,592,000	57,104,000	173,160,000	163,134,000
Income before income tax expense	35,086,000	6,057,000	67,144,000	68,083,000
Income tax expense	8,020,000	28,000	15,343,000	14,250,000
Net income	27,066,000	6,029,000	51,801,000	53,833,000
Preferred stock dividends	3,615,000	3,615,000	10,844,000	10,844,000
Net income (loss) available to common shareholders	$ 23,451,000	$ 2,414,000	$ 40,957,000	$ 42,989,000
Basic earnings per common share (usd per share)	$ 0.75	$ 0.08	$ 1.32	$ 1.36
Diluted earnings per common share (usd per share)	$ 0.74	$ 0.07	$ 1.30	$ 1.33
Interchange and card revenue
Non-interest income:
Non-interest income	$ 6,869,000	$ 7,084,000	$ 22,435,000	$ 23,127,000
Deposit fees
Non-interest income:
Non-interest income	$ 3,642,000	$ 2,002,000	$ 9,199,000	$ 5,726,000

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - Unaudited - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 27,066	$ 6,029	$ 51,801	$ 53,833
Unrealized gains (losses) on available-for-sale debt securities:
Unrealized gains (losses) arising during the period	7,858	(1,629)	46,430	(47,917)
Income tax effect	(2,043)	423	(12,072)	12,458
Reclassification adjustments for (gains) losses on securities included in net income	(1,001)	18,659	(1,001)	18,659
Income tax effect	260	(4,851)	260	(4,851)
Net unrealized gains (losses) on available-for-sale debt securities	5,074	12,602	33,617	(21,651)
Unrealized gains (losses) on cash flow hedges:
Unrealized gains (losses) arising during the period	(5,163)	4,062	(26,204)	6,830
Income tax effect	1,342	(1,056)	6,813	(1,775)
Reclassification adjustment for (gains) losses included in net income	764	(2,519)	355	(2,647)
Income tax effect	(198)	655	(92)	688
Net unrealized gains (losses) on cash flow hedges	(3,255)	1,142	(19,128)	3,096
Other comprehensive income (loss), net of income tax effect	1,819	13,744	14,489	(18,555)
Comprehensive income (loss)	$ 28,885	$ 19,773	$ 66,290	$ 35,278

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, 2017		9,000,000
Beginning balance, common stock (shares) at Dec. 31, 2017			31,382,503
Beginning balance at Dec. 31, 2017	$ 920,964	$ 217,471	$ 31,913	$ 422,096	$ 258,076	$ (359)	$ (8,233)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	53,833				53,833
Other comprehensive income (loss)	(18,555)					(18,555)
Preferred stock dividends	(10,844)				(10,844)
Share-based compensation expense	5,641			5,641
Exercise of warrants (shares)			5,242
Exercise of warrants	112		$ 5	107
Issuance of common stock under share-based compensation arrangements (shares)			299,595
Issuance of common stock under share-based compensation arrangements	3,661		$ 300	3,361
Ending balance, preferred stock (shares) at Sep. 30, 2018		9,000,000
Ending balance, common stock (shares) at Sep. 30, 2018			31,687,340
Ending balance at Sep. 30, 2018	954,812	$ 217,471	$ 32,218	431,205	302,404	(20,253)	(8,233)
Beginning balance, preferred stock (shares) at Jun. 30, 2018		9,000,000
Beginning balance, common stock (shares) at Jun. 30, 2018			31,669,643
Beginning balance at Jun. 30, 2018	936,227	$ 217,471	$ 32,200	428,796	299,990	(33,997)	(8,233)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,029				6,029
Other comprehensive income (loss)	13,744					13,744
Preferred stock dividends	(3,615)				(3,615)
Share-based compensation expense	1,980			1,980
Issuance of common stock under share-based compensation arrangements (shares)			17,697
Issuance of common stock under share-based compensation arrangements	447		$ 18	429	0
Ending balance, preferred stock (shares) at Sep. 30, 2018		9,000,000
Ending balance, common stock (shares) at Sep. 30, 2018			31,687,340
Ending balance at Sep. 30, 2018	$ 954,812	$ 217,471	$ 32,218	431,205	302,404	(20,253)	(8,233)
Beginning balance, preferred stock (shares) at Dec. 31, 2018	9,000,000	9,000,000
Beginning balance, common stock (shares) at Dec. 31, 2018	31,003,028		31,003,028
Beginning balance at Dec. 31, 2018	$ 956,816	$ 217,471	$ 32,252	434,314	316,651	(22,663)	(21,209)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	51,801				51,801
Other comprehensive income (loss)	14,489					14,489
Preferred stock dividends	(10,844)				(10,844)
Share-based compensation expense	6,557			6,557
Issuance of common stock under share-based compensation arrangements (shares)			273,907
Issuance of common stock under share-based compensation arrangements	902		$ 274	628
Repurchase of common shares (shares)			(31,159)
Repurchase of common shares	$ (571)						(571)
Ending balance, preferred stock (shares) at Sep. 30, 2019	9,000,000	9,000,000
Ending balance, common stock (shares) at Sep. 30, 2019	31,245,776		31,245,776
Ending balance at Sep. 30, 2019	$ 1,019,150	$ 217,471	$ 32,526	441,499	357,608	(8,174)	(21,780)
Beginning balance, preferred stock (shares) at Jun. 30, 2019		9,000,000
Beginning balance, common stock (shares) at Jun. 30, 2019			31,202,023
Beginning balance at Jun. 30, 2019	991,405	$ 217,471	$ 32,483	439,067	334,157	(9,993)	(21,780)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	27,066				27,066
Other comprehensive income (loss)	1,819					1,819
Preferred stock dividends	(3,615)				(3,615)
Share-based compensation expense	2,133			2,133
Issuance of common stock under share-based compensation arrangements (shares)			43,753
Issuance of common stock under share-based compensation arrangements	$ 342		$ 43	299
Ending balance, preferred stock (shares) at Sep. 30, 2019	9,000,000	9,000,000
Ending balance, common stock (shares) at Sep. 30, 2019	31,245,776		31,245,776
Ending balance at Sep. 30, 2019	$ 1,019,150	$ 217,471	$ 32,526	$ 441,499	$ 357,608	$ (8,174)	$ (21,780)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - Unaudited - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows from Operating Activities
Net income	$ 51,801	$ 53,833
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for loan and lease losses	14,539	4,257
Depreciation and amortization	15,167	10,235
Share-based compensation expense	7,289	6,595
Deferred taxes	8,701	6,238
Net amortization of investment securities premiums and discounts	691	1,205
Unrealized (gain) loss on investment securities	(988)	1,532
(Gain) loss on sale of investment securities	1,001	(18,659)
Loss upon acquisition of interest-only GNMA securities	7,476	0
(Gain) loss on sale of SBA and other loans	(602)	(3,880)
Origination of loans held for sale	(35,760)	(22,978)
Proceeds from the sale of loans held for sale	36,115	23,936
Amortization of fair value discounts and premiums	561	164
Net (gain) loss on sales of other real estate owned	137	(35)
Valuation and other adjustments to other real estate owned	31	124
Earnings on investment in bank-owned life insurance	(5,477)	(5,769)
(Increase) decrease in accrued interest receivable and other assets	(79,299)	(21,525)
Increase (decrease) in accrued interest payable and other liabilities	15,302	25,774
Net Cash Provided By (Used In) Operating Activities	34,683	98,365
Cash Flows from Investing Activities
Proceeds from maturities, calls and principal repayments of investment securities	22,627	38,926
Proceeds from sale of available-for-sale securities	97,555	476,182
Purchases of investment securities available for sale	0	(763,242)
Origination of mortgage warehouse loans	(22,167,517)	(21,739,744)
Proceeds from repayments of mortgage warehouse loans	21,049,044	22,016,825
Net (increase) decrease in loans and leases, excluding mortgage warehouse loans	(6,808)	(20,476)
Proceeds from sales of loans	0	42,211
Purchase of loans	(636,366)	(347,740)
Proceeds from bank-owned life insurance	0	529
Net proceeds from FHLB, Federal Reserve Bank, and other restricted stock	7,832	31,712
Purchases of bank premises and equipment	(5,397)	(1,344)
Proceeds from sales of other real estate owned	735	421
Purchase of university relationship intangible asset	0	(1,502)
Purchases of leased assets under lessor operating leases	(27,239)	(21,849)
Net Cash Provided By (Used In) Investing Activities	(1,665,534)	(289,091)
Cash Flows from Financing Activities
Net increase in deposits	1,783,449	1,713,572
Net increase (decrease) in short-term borrowed funds from the FHLB	(557,270)	(776,860)
Net increase (decrease) in federal funds purchased	186,000	(155,000)
Proceeds from long-term borrowed funds from the FHLB	350,000	0
Proceeds from issuance of other long-term borrowings	25,000	0
Repayments of other borrowings	(25,000)	(63,250)
Preferred stock dividends paid	(10,844)	(10,844)
Exercise of warrants	0	112
Purchase of treasury stock	(571)	0
Payments of employee taxes withheld from share-based awards	(1,366)	(711)
Proceeds from issuance of common stock	1,536	3,418
Net Cash Provided By (Used In) Financing Activities	1,750,934	710,437
Net Increase (Decrease) in Cash and Cash Equivalents	120,083	519,711
Cash and Cash Equivalents – Beginning	62,135	146,323
Cash and Cash Equivalents – Ending	182,218	666,034
Supplementary Cash Flows Information:
Interest paid	134,234	114,973
Income taxes paid	3,047	4,156
Non-cash items:
Transfer of loans to other real estate owned	291	234
Transfer of loans held for investment to held for sale	499,774	0
Transfer of loans held for sale to held for investment	0	129,691
Acquisition of interest-only GNMA securities securing a mortgage warehouse loan	17,157	0
Acquisition of residential reverse mortgage loans securing a mortgage warehouse loan	$ 1,325	$ 0

Description of the Business

Description of the Business	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of the Business	DESCRIPTION OF THE BUSINESS Customers Bancorp, Inc. (the “Bancorp” or “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. The consolidated financial statements have been prepared in conformity with U.S. GAAP and pursuant to the rules and regulations of the SEC. Customers Bancorp, Inc. and its wholly owned subsidiaries, Customers Bank, and non-bank subsidiaries, serve residents and businesses in Southeastern Pennsylvania (Bucks, Berks, Chester, Philadelphia and Delaware Counties); 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; Chicago, Illinois; and nationally for certain loan and deposit products. The Bank has 13 full-service branches and provides commercial banking products, primarily loans and deposits. In addition, Customers Bank also administratively supports loan, equipment leases and other financial products to customers through its limited-purpose offices in Boston, Massachusetts; Providence, Rhode Island; Portsmouth, New Hampshire; Manhattan and Melville, New York; Philadelphia, Pennsylvania; and Chicago, Illinois. The Bank also provides liquidity to residential mortgage originators nationwide through commercial loans to mortgage companies. Through BankMobile, a division of Customers Bank, Customers offers state of the art high tech digital banking services to consumers, students, and the "under banked" nationwide, along with "Banking as a Service" offerings with white label partners. Customers 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. Customers Bancorp has made certain equity investments through its wholly owned subsidiaries CB Green Ventures Pte Ltd. and CUBI India Ventures Pte Ltd.

Significant Accounting Policies

Significant Accounting Policies and Basis of Presentation	9 Months Ended
	Sep. 30, 2019
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 of Customers Bancorp and subsidiaries 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, 2018 consolidated balance sheet presented in this report has been derived from Customers Bancorp’s audited 2018 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 2018 consolidated financial statements of Customers Bancorp and subsidiaries included in Customers' Annual Report on Form 10-K for the year ended December 31, 2018 filed with the SEC on March 1, 2019 (the "2018 Form 10-K"). The 2018 Form 10-K describes Customers Bancorp’s significant accounting policies, which include its policies on Principles of Consolidation; Cash and Cash Equivalents and Statements of Cash Flows; Restrictions on Cash and Amounts due from Banks; Business Combinations; Investment Securities; Loan Accounting Framework; Loans Held for Sale and Loans at Fair Value; Loans Receivable - Mortgage Warehouse, at Fair Value; Loans Receivable; Purchased Loans; ALLL; Goodwill and Other Intangible Assets; FHLB, Federal Reserve Bank, and Other Restricted Stock; OREO; BOLI; Bank Premises and Equipment; Lessor Operating Leases; Treasury Stock; Income Taxes; Share-Based Compensation; Transfer of Financial Assets; Segment Information; Derivative Instruments and Hedging; Comprehensive Income (Loss); EPS; Loss Contingencies; and Collaborative Arrangements. There have been no material changes to Customers Bancorp's significant accounting policies noted above for the three and nine months ended September 30, 2019, with the exception of the adoption of ASU 2016-02, Leases as described below in accounting standards adopted in 2019 and the election of the fair value option, upon acquisition on June 28, 2019, for certain interest-only GNMA securities that served as the primary collateral for loans made to one commercial mortgage warehouse customer, as further described in NOTE 5 - INVESTMENT SECURITIES. As the interest-only GNMA securities are carried at their current fair value, changes in fair value are reported as unrealized gain (loss) on investment securities within non-interest income. Results for interim periods are not necessarily indicative of those that may be expected for the fiscal year. 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. Recently Issued Accounting Standards Accounting Standards Adopted in 2019 Standard Summary of guidance Effects on Financial Statements ASU 2016-02, Leases Issued February 2016 • Supersedes the lease accounting guidance for both lessees and lessors under ASC 840, Leases. • From the lessee's perspective, the new standard establishes a ROU model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. • Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement for lessees. • This ASU requires lessors to account for leases using an approach that is substantially similar to the existing guidance for sales-type, direct financing leases and operating leases. • Effective January 1, 2019. • In July 2018, the FASB issued ASU 2018-11 “Leases (Topic 842): Targeted Improvements,” which provides lessees the option to apply the new leasing standard to all open leases as of the adoption date. Prior to this ASU issuance, a modified retrospective transition approach was required. • In December 2018, the FASB issued ASU 2018-20 "Leases (Topic 842): Narrow-Scope Improvements for Lessors," which provides lessors a policy election to not evaluate whether certain sales taxes and other similar taxes are lessor costs or lessee costs. Additionally, the update requires certain lessors to exclude from variable payments lessor costs paid by lessees directly to third parties. • In March 2019, the FASB issued ASU 2019-01 "Codification Improvements," which clarifies that lessors who are not manufacturers or dealers should use the original cost of the underlying asset in a lease as its fair value. Additionally, the update states that lessors who are depository or lending institutions within the scope of ASC 942 should present all principal payments received under leases under investing activities in their Statement of Cash Flows and that interim disclosures under ASC 250-10-50-3 are not required in the interim reports of issuers adopting ASC 842. • Customers adopted on January 1, 2019. • The adoption did not materially change Customers' recognition of operating lease expense in its consolidated statements of income. • Customers adopted certain practical expedients available under the new guidance, which did not require it to (1) reassess whether any expired or existing contracts contain leases, (2) reassess the lease classification for any expired or existing leases, (3) reassess initial direct costs for any existing leases, (4) separate non-lease components from the associated lease components, (5) evaluate whether certain sales taxes and other similar taxes are lessor costs, and (6) capitalize short-term leases. Additionally, Customers elected to apply the new lease guidance at the adoption date, rather than at the beginning of the earliest period presented and will continue to present comparative periods prior to January 1, 2019 under Topic 840. Customers did not adopt the hindsight practical expedient. • The adoption of the ASU for Customers' lessor equipment finance business did not have a significant impact on Customers' financial condition, results of operations, and consolidated financial statements. • See NOTE 8 - LEASES. ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs: Premium Amortization on Purchased Callable Debt Securities Issued March 2017 • Requires that premiums for certain callable debt securities held be amortized to their earliest call date. • Effective on January 1, 2019. • Adoption of this new guidance must be applied on a modified retrospective approach. • Customers adopted on January 1, 2019. • The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. Accounting Standards Adopted in 2019 (continued) Standard Summary of guidance Effects on Financial Statements ASU 2017-11, Accounting for Certain Financial Instruments with Down Round Features Issued July 2017 • Changes the classification analysis of certain equity-linked financial instruments (or embedded features) with down round features. • When determining whether certain financial instruments should be classified as liabilities or equity instruments, a down round feature no longer precludes equity classification when assessing whether the instrument is indexed to an entity's own stock. As a result, a freestanding equity-linked financial instrument (or embedded conversion option) would no longer be accounted for as a derivative liability at fair value as a result of the existence of a down round feature. • For freestanding equity-classified financial instruments, the amendments require entities to recognize the effect of the down round feature when it is triggered. That effect is treated as a dividend and as a reduction of net income available to common shareholders in basic EPS. • Effective January 1, 2019. • Customers adopted on January 1, 2019. • The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Non-employee Share-Based Payment Accounting Issued June 2018 • Expands the scope of Topic 718, Compensation - Stock Compensation, which currently only includes share-based payments issued to employees, to also include share-based payments issued to non-employees for goods and services. • Applies to all share-based payment transactions in which a grantor acquires goods or services from non-employees to be used or consumed in a grantor's own operations by issuing share-based payment awards. • With the amended guidance from ASU 2018-07, non-employees share-based payments are measured with an estimate of the fair value of the equity the business is obligated to issue at the grant date (the date that the business and the stock award recipient agree to the terms of the award). • Compensation would be recognized in the same period and in the same manner as if the entity had paid cash for goods or services instead of stock. • Effective January 1, 2019. • Customers adopted on January 1, 2019. • The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. Accounting Standards Issued But Not Yet Adopted Standard Summary of guidance Effects on Financial Statements ASU 2019-04, • Clarifies the scope of the credit losses standard and addresses issues related to accrued interest receivable balances, recoveries, variable interest rates, and prepayments. • Addresses partial-term fair value hedges, fair value hedge basis adjustments and certain transition requirements. • Addresses recognizing and measuring financial instruments, specifically the requirement for remeasurement under ASC 820 when using the measurement alternative, certain disclosure requirements and which equity securities have to be remeasured at historical exchange rates. • Topic 326 Amendments - Effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption permitted. Topic 815 Amendments - Effective for first annual period beginning after the issuance date of this ASU (i.e., fiscal year 2020). Entities that have already adopted the amendments in ASU 2017-12 may elect either to retrospectively apply all the amendments or to prospectively apply all amendments as of the date of adoption. Topic 825 Amendments - Effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. • Customers intends to adopt this guidance on its effective date and is currently evaluating the expected impact of this ASU on its financial condition, results of operations and consolidated financial statements. Please refer below to ASU 2016-13 for further discussion on Customers' adoption of ASU 2016-13 (Topic 326). ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction Between Topic 808 and Topic 606 Issued November 2018 • Clarifies that certain transactions between collaborative arrangement participants should be accounted for as revenue under Topic 606 when the collaborative arrangement participant is a customer in the context of a unit of account. In those situations, all the guidance in Topic 606 should be applied, including recognition, measurement, presentation, and disclosure requirements. • Adds unit-of-account guidance in Topic 808 to align with the guidance in Topic 606 when an entity is assessing whether the collaborative arrangement or a part of the arrangement is within scope of Topic 606. • Requires that in a transaction with a collaborative arrangement participant that is not directly related to sales to third parties, presenting the transaction together with revenue recognized under Topic 606 is precluded if the collaborative arrangement participant is not a customer. • Effective for fiscal year beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption permitted. • Customers intends to adopt this guidance on its effective date and does not expect the adoption of this guidance to materially impact its financial condition, results of operations and consolidated financial statements. Accounting Standards Issued But Not Yet Adopted (continued) Standard Summary of guidance Effects on Financial Statements ASU 2018-15, Internal-Use Software (Subtopic 350-40): Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract Issued August 2018 • Clarifies that service contracts with hosting arrangements must follow internal-use software guidance Subtopic 350-40 when determining which implementation costs to capitalize as an asset related to the service contract and which costs to expense. • Also clarifies that capitalized implementation costs of a hosting arrangement that is a service contract are to be amortized over the term of the hosting arrangement, which includes the noncancelable period of the arrangement plus options to extend the arrangement if reasonably certain to exercise. • Clarifies that existing impairment guidance in Subtopic 350-40 must be applied to the capitalized implementation costs as if they were long-lived assets. • Applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. • Effective for fiscal year beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption permitted. • Customers intends to adopt this guidance on its effective date and does not expect the adoption of this guidance to materially impact its financial condition, results of operations and consolidated financial statements. ASU 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments Issued June 2016 • Requires an entity to utilize a new impairment model known as the CECL model to estimate lifetime expected credit loss and record an allowance that, when deducted from the amortized cost basis of the financial asset (including held-to-maturity debt securities), presents the net amount expected to be collected on the financial asset. • Replaces today's "incurred loss" approach and is expected to result in earlier recognition of credit losses. • For available-for-sale debt securities, entities will be required to record allowances for credit losses rather than reduce the carrying amount, as they do today under the OTTI model, and will be allowed to reverse previously established allowances in the event the credit of the issuer improves. • Simplifies the accounting model for PCI debt securities and loans. • In May 2019, the FASB issued ASU 2019-05 "Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief," which provides entities that have certain instruments within the scope of Topic 326 with an option to irrevocably elect the fair value option in Subtopic 825, Financial Instruments. This relief is to be applied on an instrument-by-instrument basis for eligible instruments upon adoption of Topic 326. • Effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years, with early adoption permitted. • Adoption to be applied through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. • Customers has established a company-wide, cross-discipline governance structure, which provides implementation oversight and continues evaluating the impact of this ASU and reviewing the loss modeling requirements consistent with expected credit loss estimates. • Customers has selected a third-party vendor to assist in the implementation process of its new model. • Customers will utilize lifetime loss rate models for its commercial real estate, commercial and industrial, and consumer portfolios. As Customers' loan portfolios have not been subject to a full economic credit cycle, lifetime loss rates will be based on its peer groups' historical loss rates for each of these portfolios of loans. Additionally, the loss rates will include reasonable and supportable forecasts of macroeconomic conditions. • Customers began to perform parallel runs of the new models to its current ALLL model during second quarter 2019 and continues to evaluate the results and assumptions. • Implementation efforts are continuing to focus on model validation, model calibration, qualitative factors, developing new disclosures, finalizing formal policies and procedures and other governance and control enhancements and documentation. • The FASB recently issued two ASUs that clarified treatment of several topics in the CECL standard, including recoveries and accrued interest, which we plan to implement. The FASB also recently proposed an ASU providing additional guidance on selected topics and we are awaiting final guidance to implement any necessary changes. • The adoption of this ASU will result in an increase to Customers' ALLL which will depend upon the nature and characteristics of Customers' loan and lease portfolio at the adoption date, as well as the macroeconomic conditions and forecasts at that date. • Customers will adopt this new guidance on January 1, 2020.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS 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) 2019 2018 2019 2018 Net income available to common shareholders $ 23,451 $ 2,414 $ 40,957 $ 42,989 Weighted-average number of common shares outstanding - basic 31,223,777 31,671,122 31,142,400 31,554,407 Share-based compensation plans 420,951 601,622 438,629 750,573 Warrants — 4,846 — 7,475 Weighted-average number of common shares - diluted 31,644,728 32,277,590 31,581,029 32,312,455 Basic earnings per common share $ 0.75 $ 0.08 $ 1.32 $ 1.36 Diluted earnings per common share $ 0.74 $ 0.07 $ 1.30 $ 1.33 The following is a summary of 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 2019 2018 2019 2018 Share-based compensation awards 2,181,195 1,787,670 2,233,160 1,105,287

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income (Loss) By Component	9 Months Ended
	Sep. 30, 2019
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, 2019 and 2018. All amounts are presented net of tax. Amounts in parentheses indicate reductions to AOCI. Three Months Ended September 30, 2019 Available-for-Sale Debt Securities (amounts in thousands) Unrealized Gains (Losses) Foreign Currency Items Total Unrealized Gains (Losses) Unrealized Gains (Losses) on Cash Flow Hedges Total Balance - June 30, 2019 $ 6,802 $ — $ 6,802 $ (16,795) $ (9,993) Other comprehensive income (loss) before reclassifications 5,815 — 5,815 (3,821) 1,994 Amounts reclassified from accumulated other comprehensive income (loss) to net income (1) (741) — (741) 566 (175) Net current-period other comprehensive income (loss) 5,074 — 5,074 (3,255) 1,819 Balance - September 30, 2019 $ 11,876 $ — $ 11,876 $ (20,050) $ (8,174) Nine Months Ended September 30, 2019 Available-for-Sale Debt Securities (amounts in thousands) Unrealized Gains (Losses) Foreign Currency Items Total Unrealized Gains (Losses) Unrealized Total Balance - December 31, 2018 $ (21,741) $ — $ (21,741) $ (922) $ (22,663) Other comprehensive income (loss) before reclassifications 34,358 — 34,358 (19,391) 14,967 Amounts reclassified from accumulated other comprehensive income (loss) to net income (1) (741) — (741) 263 (478) Net current-period other comprehensive income (loss) 33,617 — 33,617 (19,128) 14,489 Balance - September 30, 2019 $ 11,876 $ — $ 11,876 $ (20,050) $ (8,174) (1) Reclassification amounts for available-for-sale debt securities are reported as gain or loss on sale of investment securities on the consolidated statements of income. During both the three and nine months ended September 30, 2019 reclassification amounts of $1.0 million ($0.7 million net of taxes) were reported as gain on sale of investment securities on the consolidated statements of income. Reclassification amounts for cash flow hedges are reported as interest expense for the applicable hedged items on the consolidated statements of income. During the three and nine months ended September 30, 2019, reclassification amounts of $0.8 million ($0.6 million net of taxes) and $0.4 million ($0.3 million net of taxes), respectively, were reported as increases to interest expense for the applicable hedged items on the consolidated statements of income. Three Months Ended September 30, 2018 Available-for-Sale Debt Securities (amounts in thousands) Unrealized Gains (Losses) Foreign Currency Items Unrealized Gains (Losses) on Available-For-Sale Securities Unrealized Gains (Losses) on Cash Flow Hedges Total Balance - June 30, 2018 $ (35,711) $ — $ (35,711) $ 1,714 $ (33,997) Other comprehensive income (loss) before reclassifications (1,206) — (1,206) 3,006 1,800 Amounts reclassified from accumulated other comprehensive income (loss) to net income (1) 13,808 — 13,808 (1,864) 11,944 Net current-period other comprehensive income (loss) 12,602 — 12,602 1,142 13,744 Balance - September 30, 2018 $ (23,109) $ — $ (23,109) $ 2,856 $ (20,253) Nine Months Ended September 30, 2018 Available-for-Sale Debt Securities (amounts in thousands) Unrealized Gains (Losses) Foreign Currency Items Unrealized Gains (Losses) on Available-For-Sale Securities Unrealized Total Balance - December 31, 2017 $ (249) $ 88 $ (161) $ (198) $ (359) Reclassification of the income tax effects of the Tax Cuts and Jobs Act (2) (256) — (256) (42) (298) Reclassification of net unrealized gains on equity securities (2) (953) (88) (1,041) — (1,041) Balance after reclassifications on January 1, 2018 (1,458) — (1,458) (240) (1,698) Other comprehensive income (loss) before reclassifications (35,459) — (35,459) 5,055 (30,404) Amounts reclassified from accumulated other comprehensive income (loss) to net income (1) 13,808 — 13,808 (1,959) 11,849 Net current-period other comprehensive income (21,651) — (21,651) 3,096 (18,555) Balance - September 30, 2018 $ (23,109) $ — $ (23,109) $ 2,856 $ (20,253) (1) Reclassification amounts for available-for-sale debt securities are reported as gain or loss on sale of investment securities on the consolidated statements of income. During both the three and nine months ended September 30, 2018, reclassification amounts of $18.7 million ($13.8 million net of taxes), were reported as loss on sale of investment securities on the consolidated statements of income. Reclassification amounts for cash flow hedges are reported as interest expense for the applicable hedged items on the consolidated statements of income or other non-interest income on the consolidated statements of income for gains from the discontinuance of cash flow hedge accounting for certain interest rate swaps. During the three and nine months ended September 30, 2018, reclassification amounts of $303 thousand ($224 thousand net of taxes) and $175 thousand ($129 thousand net of taxes) were reported as interest expense on hedged items on the the consolidated statements of income. During the three and nine months ended September 30, 2018, reclassification amounts of $2.8 million ($2.1 million net of taxes), respectively, were reported as other non-interest income on the consolidated statements of income from the discontinuance of cash flow hedge accounting for certain interest rate swaps. (2) Amounts reclassified from accumulated other comprehensive income (loss) on January 1, 2018 as a result of the adoption of ASU 2018-02 and ASU 2016-01 resulted in a decrease in AOCI of $1.3 million and a corresponding increase in retained earnings for the same amount.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES The amortized cost and approximate fair value of investment securities as of September 30, 2019 and December 31, 2018 are summarized in the tables below: September 30, 2019 (amounts in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale debt securities: Agency-guaranteed residential mortgage-backed securities $ 288,829 $ 3,514 $ — $ 292,343 Corporate notes (1) 284,663 12,535 — 297,198 Available-for-sale debt securities $ 573,492 $ 16,049 $ — 589,541 Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities (2) 17,078 Equity securities (3) 2,095 Total investment securities, at fair value $ 608,714 December 31, 2018 (amounts in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale debt securities: Agency-guaranteed residential mortgage-backed securities $ 311,267 $ — $ (5,893) $ 305,374 Corporate notes (1) 381,407 920 (24,407) 357,920 Available-for-sale debt securities $ 692,674 $ 920 $ (30,300) 663,294 Equity securities (3) 1,718 Total investment securities, at fair value $ 665,012 (1) At September 30, 2019, includes corporate securities issued by other domestic bank holding companies. At December 31, 2018, includes corporate securities issued by other domestic and foreign bank holding companies. (2) Reported at fair value with fair value changes recorded in non-interest income based on a fair value option election. (3) Includes equity securities issued by a foreign entity. On June 28, 2019, Customers obtained ownership of certain interest-only GNMA securities that served as the primary collateral for loans made to one commercial mortgage warehouse customer through a Uniform Commercial Code private sale transaction. In connection with the acquisition of the interest-only GNMA securities, Customers recognized a pre-tax loss of $7.5 million for the nine months ended September 30, 2019 for the shortfall in the fair value of the interest-only GNMA securities compared to its credit exposure to this commercial mortgage warehouse customer. On June 28, 2019, Customers elected the fair value option for these interest-only GNMA securities acquired on such date. The fair value of these securities at September 30, 2019 was $17.1 million. During the three and nine months ended September 30, 2019, Customers recognized unrealized gains of $1.3 million and $1.0 million, respectively, on its interest-only GNMA securities and equity securities. During the three and nine months ended September 30, 2018, Customers recognized unrealized losses of $1.2 million and $1.5 million, respectively, on its equity securities. These unrealized gains and losses are reported as unrealized gain (loss) on investment securities within non-interest income on the consolidated statements of income. The following table presents proceeds from the sale of available-for-sale debt securities and gross gains and gross losses realized on those sales for the three and nine months ended September 30, 2019 and 2018. Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) 2019 2018 2019 2018 Proceeds from sale of available-for-sale securities $ 97,555 $ 476,182 $ 97,555 $ 476,182 Gross gains $ 1,936 $ — $ 1,936 $ — Gross losses (935) (18,659) (935) (18,659) Net gains / (losses) $ 1,001 $ (18,659) $ 1,001 $ (18,659) These gains/(losses) were determined using the specific identification method and were reported as gain (loss) on sale of investment securities within non-interest income on the consolidated statements of income. The following table shows debt securities by stated maturity. Debt securities backed by mortgages and interest-only GNMA securities 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, 2019 (amounts in thousands) Amortized Fair Due in one year or less $ — $ — Due after one year through five years 5,000 5,238 Due after five years through ten years 277,662 289,862 Due after ten years 2,000 2,098 Agency-guaranteed residential mortgage-backed securities 288,830 292,343 Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities — 17,078 Total debt securities $ 573,492 $ 606,619 At September 30, 2019, there were no available-for-sale debt securities in an unrealized loss position. Gross unrealized losses and fair value of Customers' available-for-sale debt securities aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at December 31, 2018 were as follows: December 31, 2018 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: Agency-guaranteed residential mortgage-backed securities $ 305,374 $ (5,893) $ — $ — $ 305,374 $ (5,893) Corporate notes 310,036 (24,407) — — 310,036 (24,407) Total $ 615,410 $ (30,300) $ — $ — $ 615,410 $ (30,300) At September 30, 2019 and December 31, 2018, Customers Bank had pledged investment securities aggregating $21.8 million and $23.0 million in fair value, respectively, as collateral against its borrowings primarily with the FHLB and an unused line of credit with another financial institution. These counterparties do not have the ability to sell or repledge these securities. At September 30, 2019 and December 31, 2018, no securities holding of any one issuer, other than the U.S. Government and its agencies, amounted to greater than 10% of shareholders' equity.

Loans Held for Sale

Loans Held for Sale	9 Months Ended
	Sep. 30, 2019
Receivables Held-for-sale [Abstract]
Loans Held for Sale	LOANS HELD FOR SALE The composition of loans held for sale as of September 30, 2019 and December 31, 2018 was as follows: September 30, 2019 December 31, 2018 (amounts in thousands) Commercial loans: Multi-family loans, at lower of cost or fair value $ 499,774 $ — Total commercial loans held for sale 499,774 — Consumer loans: Home equity conversion mortgages, at lower of cost or fair value 1,325 — Residential mortgage loans, at fair value 1,755 1,507 Total consumer loans held for sale 3,080 1,507 Loans held for sale $ 502,854 $ 1,507

Loans and Leases Receivable and

Loans and Leases Receivable and Allowance for Loan and Lease Losses	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Loans and Leases Receivable and Allowance for Loan and Lease Losses	LOANS AND LEASES RECEIVABLE AND ALLOWANCE FOR LOAN AND LEASE LOSSES The following table presents loans and leases receivable as of September 30, 2019 and December 31, 2018. (amounts in thousands) September 30, 2019 December 31, 2018 Loans receivable, mortgage warehouse, at fair value $ 2,438,530 $ 1,405,420 Loans receivable: Commercial: Multi-family 2,300,244 3,285,297 Commercial and industrial (including owner occupied commercial real estate) (1) 2,363,599 1,951,277 Commercial real estate non-owner occupied 1,268,557 1,125,106 Construction 61,200 56,491 Total commercial loans and leases receivable 5,993,600 6,418,171 Consumer: Residential real estate 628,786 566,561 Manufactured housing 72,616 79,731 Other consumer 643,553 74,035 Total consumer loans receivable 1,344,955 720,327 Loans and leases receivable 7,338,555 7,138,498 Deferred (fees) costs and unamortized (discounts) premiums, net (2,318) (424) Allowance for loan and lease losses (51,053) (39,972) Total loans and leases receivable, net of allowance for loan and lease losses $ 9,723,714 $ 8,503,522 (1) Includes direct finance equipment leases of $75.2 million and $54.5 million at September 30, 2019 and December 31, 2018, respectively. Customers' total loans and leases receivable portfolio 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 and deferred costs and fees and unamortized premiums and discounts and are evaluated for impairment. 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 receivable 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, 2019 and December 31, 2018, 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 allowance for loan and lease loss and are therefore excluded from ALLL-related disclosures. Loans and leases receivable: The following tables summarize loans and leases receivable by loan and lease type and performance status as of September 30, 2019 and December 31, 2018: September 30, 2019 (amounts in thousands) 30-89 Days past due (1) 90 Days or more past due (1) Total past due (1) Non-accrual Current (2) Purchased-credit-impaired loans (3) Total loans and leases (4) Multi-family $ 3,662 $ — $ 3,662 $ — $ 2,294,926 $ 1,656 $ 2,300,244 Commercial and industrial 860 — 860 5,314 1,881,586 374 1,888,134 Commercial real estate owner occupied 686 — 686 2,068 465,934 6,777 475,465 Commercial real estate non-owner occupied — — — 83 1,264,361 4,113 1,268,557 Construction — — — — 61,200 — 61,200 Residential real estate 2,485 — 2,485 6,093 616,533 3,675 628,786 Manufactured housing (5) 3,153 1,943 5,096 1,567 64,362 1,591 72,616 Other consumer 3,810 — 3,810 1,140 638,400 203 643,553 Total $ 14,656 $ 1,943 $ 16,599 $ 16,265 $ 7,287,302 $ 18,389 $ 7,338,555 December 31, 2018 (amounts in thousands) 30-89 Days past due (1) 90 Days or more past due (1) Total past due (1) Non-accrual Current (2) Purchased-credit-impaired loans (3) Total loans and leases (4) Multi-family $ — $ — $ — $ 1,155 $ 3,282,452 $ 1,690 $ 3,285,297 Commercial and industrial 1,914 — 1,914 17,764 1,353,586 536 1,373,800 Commercial real estate owner occupied 193 — 193 1,037 567,809 8,438 577,477 Commercial real estate non-owner occupied 1,190 — 1,190 129 1,119,443 4,344 1,125,106 Construction — — — — 56,491 — 56,491 Residential real estate 5,940 — 5,940 5,605 550,679 4,337 566,561 Manufactured housing (5) 3,926 2,188 6,114 1,693 69,916 2,008 79,731 Other consumer 200 — 200 111 73,503 221 74,035 Total $ 13,363 $ 2,188 $ 15,551 $ 27,494 $ 7,073,879 $ 21,574 $ 7,138,498 (1) Includes past due loans and leases that are accruing interest because collection is considered probable. (2) Loans and leases where next payment due is less than 30 days from the report date. (3) Purchased-credit-impaired loans aggregated into a pool are accounted for as a single asset with a single composite interest rate and an aggregate expectation of cash flows, and the past due status of the pools, or that of the individual loans within the pools, is not meaningful. Due to the credit impaired nature of the loans, the loans are recorded at a discount reflecting estimated future cash flows and the Bank recognizes interest income on each pool of loans reflecting the estimated yield and passage of time. Such loans are considered to be performing. Purchased-credit-impaired loans that are not in pools accrete interest when the timing and amount of their expected cash flows are reasonably estimable, and are reported as performing loans. (4) Amounts exclude deferred costs and fees, unamortized premiums and discounts, and the ALLL. (5) Certain manufactured housing loans purchased in 2010 are supported by cash reserves held at the Bank of $24 thousand and $0.5 million at September 30, 2019 and December 31, 2018, respectively, which are used to fund past-due payments when the loan becomes 90 days or more delinquent. Each quarter, these funds are evaluated to determine if they would be sufficient to absorb the probable incurred losses within the manufactured housing portfolio. As of both September 30, 2019 and December 31, 2018, the Bank had $0.2 million, respectively, of residential real estate held in OREO. As of September 30, 2019 and December 31, 2018, the Bank had initiated foreclosure proceedings on $0.8 million and $2.1 million, respectively, in loans secured by residential real estate. Allowance for loan and lease losses The changes in the ALLL for the three and nine months ended September 30, 2019 and 2018, and the loans and leases and ALLL by loan and lease type based on impairment-evaluation method as of September 30, 2019 and December 31, 2018 are presented in the tables below. Three Months Ended September 30, 2019 Multi-family Commercial and industrial Commercial real estate owner occupied Commercial real estate non-owner occupied Construction Residential real estate Manufactured housing Other consumer Total (amounts in thousands) Ending Balance, $ 9,926 $ 13,736 $ 3,360 $ 6,159 $ 649 $ 4,168 $ 123 $ 10,267 $ 48,388 Charge-offs — (349) (45) — — — — (1,806) (2,200) Recoveries — 369 10 — 8 5 — 47 439 Provision for loan and lease losses (2,428) 2,119 (435) 281 1 (90) 904 4,074 4,426 Ending Balance, $ 7,498 $ 15,875 $ 2,890 $ 6,440 $ 658 $ 4,083 $ 1,027 $ 12,582 $ 51,053 Nine Months Ended Ending Balance, $ 11,462 $ 12,145 $ 3,320 $ 6,093 $ 624 $ 3,654 $ 145 $ 2,529 $ 39,972 Charge-offs (541) (532) (119) — — (109) — (3,493) (4,794) Recoveries 7 826 235 — 128 20 — 120 1,336 Provision for loan and lease losses (3,430) 3,436 (546) 347 (94) 518 882 13,426 14,539 Ending Balance, $ 7,498 $ 15,875 $ 2,890 $ 6,440 $ 658 $ 4,083 $ 1,027 $ 12,582 $ 51,053 As of September 30, 2019 (amounts in thousands) Loans and leases receivable: Individually evaluated for impairment $ — $ 5,375 $ 2,084 $ 83 $ — $ 9,057 $ 9,929 $ 1,140 $ 27,668 Collectively evaluated for impairment 2,298,588 1,882,385 466,604 1,264,361 61,200 616,054 61,096 642,210 7,292,498 Loans acquired with credit deterioration 1,656 374 6,777 4,113 — 3,675 1,591 203 18,389 Total loans and leases receivable $ 2,300,244 $ 1,888,134 $ 475,465 $ 1,268,557 $ 61,200 $ 628,786 $ 72,616 $ 643,553 $ 7,338,555 Allowance for loan and lease losses: Individually evaluated for impairment $ — $ 167 $ — $ — $ — $ 40 $ 123 $ 65 $ 395 Collectively evaluated for impairment 7,498 15,448 2,882 4,555 658 3,727 904 12,362 48,034 Loans acquired with credit deterioration — 260 8 1,885 — 316 — 155 2,624 Total allowance for loan and lease losses $ 7,498 $ 15,875 $ 2,890 $ 6,440 $ 658 $ 4,083 $ 1,027 $ 12,582 $ 51,053 Three Months Ended September 30, 2018 Multi-family Commercial and industrial Commercial real estate owner occupied Commercial real estate non-owner occupied Construction Residential real estate Manufactured housing Other consumer Total (amounts in thousands) Ending Balance, $ 12,069 $ 12,258 $ 2,988 $ 6,698 $ 992 $ 2,908 $ 149 $ 226 $ 38,288 Charge-offs — (90) — — — — — (437) (527) Recoveries — 30 — 5 11 6 — 4 56 Provision for loan and lease losses (240) 516 164 (254) 59 987 (55) 1,747 2,924 Ending Balance, $ 11,829 $ 12,714 $ 3,152 $ 6,449 $ 1,062 $ 3,901 $ 94 $ 1,540 $ 40,741 Nine Months Ended Ending Balance, $ 12,168 $ 10,918 $ 3,232 $ 7,437 $ 979 $ 2,929 $ 180 $ 172 $ 38,015 Charge-offs — (314) (501) — — (407) — (1,155) (2,377) Recoveries — 205 326 5 231 69 — 10 846 Provision for loan and lease losses (339) 1,905 95 (993) (148) 1,310 (86) 2,513 4,257 Ending Balance, $ 11,829 $ 12,714 $ 3,152 $ 6,449 $ 1,062 $ 3,901 $ 94 $ 1,540 $ 40,741 As of December 31, 2018 (amounts in thousands) Loans and leases receivable: Individually evaluated for impairment $ 1,155 $ 17,828 $ 1,069 $ 129 $ — $ 8,631 $ 10,195 $ 111 $ 39,118 Collectively evaluated for impairment 3,282,452 1,355,436 567,970 1,120,633 56,491 553,593 67,528 73,703 7,077,806 Loans acquired with credit deterioration 1,690 536 8,438 4,344 — 4,337 2,008 221 21,574 Total loans and leases receivable $ 3,285,297 $ 1,373,800 $ 577,477 $ 1,125,106 $ 56,491 $ 566,561 $ 79,731 $ 74,035 $ 7,138,498 Allowance for loan and lease losses: Individually evaluated for impairment $ 539 $ 261 $ 1 $ — $ — $ 41 $ 3 $ — $ 845 Collectively evaluated for impairment 10,923 11,516 3,319 4,161 624 3,227 89 2,390 36,249 Loans acquired with credit deterioration — 368 — 1,932 — 386 53 139 2,878 Total allowance for loan and lease losses $ 11,462 $ 12,145 $ 3,320 $ 6,093 $ 624 $ 3,654 $ 145 $ 2,529 $ 39,972 Impaired Loans - Individually Evaluated for Impairment The following tables present the recorded investment (net of charge-offs), unpaid principal balance, and related allowance by loan type for impaired loans that were individually evaluated for impairment as of September 30, 2019 and December 31, 2018 and the average recorded investment and interest income recognized for the three and nine months ended September 30, 2019 and 2018. Customers had no impaired lease receivables as of September 30, 2019 and December 31, 2018, respectively. Purchased-credit-impaired loans are considered to be performing and are not included in the tables below. September 30, 2019 Three Months Ended Nine Months Ended (amounts in thousands) Recorded investment net of charge-offs Unpaid principal balance Related allowance Average recorded investment Interest income recognized Average recorded investment Interest income recognized With no related allowance recorded: Multi-family $ — $ — $ — $ — $ 149 $ 499 $ 149 Commercial and industrial 4,602 6,245 — 4,631 991 8,528 1,009 Commercial real estate owner occupied 2,068 2,849 — 1,425 74 1,111 95 Commercial real estate non-owner occupied 83 194 — 89 7 102 7 Residential real estate 4,686 5,007 — 4,526 21 4,654 82 Manufactured housing 4,496 4,496 — 7,229 97 8,656 335 Other consumer 195 195 — 164 76 137 84 With an allowance recorded: Multi-family — — — — — 289 — Commercial and industrial 773 773 167 3,358 — 4,277 97 Commercial real estate owner occupied 16 16 — 91 — 131 1 Residential real estate 4,371 4,371 40 4,057 47 3,937 101 Manufactured housing 5,433 5,433 123 2,799 45 1,483 49 Other consumer 945 945 65 586 — 293 — Total $ 27,668 $ 30,524 $ 395 $ 28,955 $ 1,507 $ 34,097 $ 2,009 December 31, 2018 Three Months Ended Nine Months Ended (amounts in thousands) Recorded investment net of charge-offs Unpaid principal balance Related allowance Average recorded investment Interest income recognized Average recorded investment Interest income recognized With no related allowance recorded: Multi-family $ — $ — $ — $ 1,343 $ — $ 672 $ 8 Commercial and industrial 13,660 15,263 — 7,765 166 7,623 168 Commercial real estate owner occupied 1,037 1,766 — 711 — 711 — Commercial real estate non-owner occupied 129 241 — 1,347 — 774 8 Residential real estate 4,842 5,128 — 4,281 23 3,952 25 Manufactured housing 10,027 10,027 — 10,147 144 10,011 421 Other consumer 111 111 — 103 1 83 1 With an allowance recorded: Multi-family 1,155 1,155 539 — — — — Commercial and industrial 4,168 4,351 261 5,787 27 7,089 39 Commercial real estate owner occupied 32 32 1 336 9 546 11 Residential real estate 3,789 3,789 41 4,398 61 4,760 124 Manufactured housing 168 168 3 227 4 225 10 Total $ 39,118 $ 42,031 $ 845 $ 36,445 $ 435 $ 36,446 $ 815 Troubled Debt Restructurings At September 30, 2019 and December 31, 2018, there were $13.5 million and $19.2 million, respectively, in loans reported as TDRs. TDRs are reported as impaired loans in the calendar year of their restructuring and are evaluated to determine whether they should be placed on non-accrual status. In subsequent years, a TDR may be returned to accrual status if it satisfies a minimum performance requirement of six months, however, it will remain classified as impaired. Generally, the Bank requires sustained performance for nine months before returning a TDR to accrual status. Modifications of PCI loans that are accounted for within loan pools in accordance with the accounting standards for PCI loans do not result in the removal of these loans from the pool even if the modifications would otherwise be considered a TDR. Accordingly, as each pool is accounted for as a single asset with a single composite interest rate and an aggregate expectation of cash flows, modifications of loans within such pools are not considered TDRs. Customers had no lease receivables that had been restructured as a TDR as of September 30, 2019 and December 31, 2018, respectively. The following table presents total TDRs based on loan type and accrual status at September 30, 2019 and December 31, 2018. Nonaccrual TDRs are included in the reported amount of total non-accrual loans. September 30, 2019 December 31, 2018 (amounts in thousands) Accruing TDRs Nonaccrual TDRs Total Accruing TDRs Nonaccrual TDRs Total Commercial and industrial $ 61 $ 29 $ 90 $ 64 $ 5,273 $ 5,337 Commercial real estate owner occupied 16 — 16 32 — 32 Residential real estate 2,964 639 3,603 3,026 667 3,693 Manufactured housing 8,362 1,424 9,786 8,502 1,620 10,122 Other consumer — 11 11 — 12 12 Total TDRs $ 11,403 $ 2,103 $ 13,506 $ 11,624 $ 7,572 $ 19,196 The following table presents loans modified in a TDR by type of concession for the three and nine months ended September 30, 2019 and 2018. There were no modifications that involved forgiveness of debt for the three and nine months ended September 30, 2019 and 2018. Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (dollars in thousands) Number of loans Recorded investment Number of loans Recorded investment Number of loans Recorded investment Number of loans Recorded investment Extensions of maturity — $ — — $ — 2 $ 514 1 $ 56 Interest-rate reductions 7 196 8 473 19 628 32 1,402 Total 7 $ 196 8 $ 473 21 $ 1,142 33 $ 1,458 The following table provides, by loan type, the number of loans modified in TDRs and the related recorded investment for the three and nine months ended September 30, 2019 and 2018. Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (dollars in thousands) Number of loans Recorded investment Number of loans Recorded investment Number of loans Recorded investment Number of loans Recorded investment Commercial and industrial — $ — — $ — 1 $ 431 — $ — Manufactured housing 7 196 7 321 19 628 30 1,093 Residential real estate — — 1 152 1 83 2 352 Other consumer — — — — — — 1 13 Total loans 7 $ 196 8 $ 473 21 $ 1,142 33 $ 1,458 As of September 30, 2019, there were no commitments to lend additional funds to debtors whose loans have been modified in TDRs. As of December 31, 2018, except for one commercial and industrial loan with an outstanding commitment of $1.5 million, there were no other 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, 2019 September 30, 2018 (dollars in thousands) Number of loans Recorded investment Number of loans Recorded investment Manufactured housing 3 $ 76 — $ — Residential real estate 1 82 — — Total loans 4 $ 158 — $ — Loans modified in TDRs are evaluated for impairment. The nature and extent of impairment of TDRs, including those which have experienced a subsequent default, is considered in the determination of an appropriate level of ALLL. During the three and nine months ended September 30, 2019, allowances totaling $3 thousand and $6 thousand, respectively, were recorded on four and nine loans, respectively, that had been modified in TDRs. There were no allowances recorded as a result of TDR modifications during the three and nine months ended September 30, 2018. Purchased-Credit-Impaired Loans The changes in accretable yield related to PCI loans for the three and nine months ended September 30, 2019 and 2018 were as follows: Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) 2019 2018 2019 2018 Accretable yield balance, beginning of period $ 5,807 $ 7,403 $ 6,178 $ 7,825 Accretion to interest income (256) (310) (911) (1,164) Reclassification from nonaccretable difference and disposals, net (67) (4) 217 428 Accretable yield balance, end of period $ 5,484 $ 7,089 $ 5,484 $ 7,089 Credit Quality Indicators The ALLL represents management's estimate of probable losses in Customers' loans and leases receivable portfolio, excluding commercial mortgage warehouse loans reported at fair value pursuant to a fair value option election. Multi-family, commercial and industrial, 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 loans, manufactured housing and other consumer loans are evaluated based on the payment activity of the loan. To facilitate the monitoring of credit quality within the multi-family, commercial and industrial, owner occupied commercial real estate, non-owner occupied commercial real estate, and construction loan portfolios, and for purposes of analyzing historical loss rates used in the determination of the ALLL for the respective loan portfolios, 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/satisfactory 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 2018 Form 10-K describes Customers Bancorp’s risk rating grades. Risk ratings are not established for certain consumer loans, including residential real estate, other consumer loans, 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 and 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 as of September 30, 2019 and December 31, 2018. September 30, 2019 (amounts in thousands) Multi-family Commercial and industrial Commercial real estate owner occupied Commercial real estate non-owner occupied Construction Residential real estate Manufactured housing Other consumer Total (3) Pass/Satisfactory $ 2,259,366 $ 1,836,857 $ 459,549 $ 1,200,664 $ 61,200 $ — $ — $ — $ 5,817,636 Special Mention 21,449 27,454 8,342 11,633 — — — — 68,878 Substandard 19,429 23,823 7,574 56,260 — — — — 107,086 Performing (1) — — — — — 620,208 65,953 638,603 1,324,764 Non-performing (2) — — — — — 8,578 6,663 4,950 20,191 Total $ 2,300,244 $ 1,888,134 $ 475,465 $ 1,268,557 $ 61,200 $ 628,786 $ 72,616 $ 643,553 $ 7,338,555 December 31, 2018 (amounts in thousands) Multi-family Commercial and industrial Commercial real estate owner occupied Commercial real estate non-owner occupied Construction Residential real estate Manufactured housing Other consumer Total (3) Pass/Satisfactory $ 3,201,822 $ 1,306,466 $ 562,639 $ 1,054,493 $ 56,491 $ — $ — $ — $ 6,181,911 Special Mention 55,696 30,551 9,730 30,203 — — — — 126,180 Substandard 27,779 36,783 5,108 40,410 — — — — 110,080 Performing (1) — — — — — 555,016 71,924 73,724 700,664 Non-performing (2) — — — — — 11,545 7,807 311 19,663 Total $ 3,285,297 $ 1,373,800 $ 577,477 $ 1,125,106 $ 56,491 $ 566,561 $ 79,731 $ 74,035 $ 7,138,498 (1) Includes residential real estate, manufactured housing, and other consumer loans not assigned internal ratings. (2) Includes residential real estate, manufactured housing, and other consumer loans that are past due and still accruing interest or on nonaccrual status. (3) Excludes commercial mortgage warehouse loans reported at fair value. Loan Purchases and Sales Purchases and sales of loans were as follows for the three and nine months ended September 30, 2019 and 2018: Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) 2019 2018 2019 2018 Purchases (1) Residential real estate $ — $ 25,807 $ 105,858 $ 303,181 Other consumer (2) 83,898 46,843 534,150 46,843 Total $ 83,898 $ 72,650 $ 640,008 $ 350,024 Sales (3) Commercial and industrial (4) $ — $ (6,691) $ — $ (23,840) Commercial real estate owner occupied (4) — (5,387) — (14,968) Total $ — $ (12,078) $ — $ (38,808) (1) Amounts reported in the above table are the unpaid principal balance at time of purchase. The purchase price was 96.3% and 95.3% of loans outstanding for the three months ended September 30, 2019 and 2018, respectively. The purchase price was 99.4% and 99.3% of loans outstanding for the nine months ended September 30, 2019 and 2018, respectively. (2) Other consumer loan purchases for the three and nine months ended September 30, 2019 consist of third-party originated unsecured consumer loans. None of the loans are considered sub-prime at the time of origination or purchase. Customers considers sub-prime borrowers to be those with FICO scores below 660. (3) Amounts reported in the above table are the unpaid principal balance at time of sale. There were no loan sales for the three and nine months ended September 30, 2019. For the three and nine months ended September 30, 2018, loan sales resulted in gains of $1.1 million and $3.4 million, respectively. (4) Primarily sales of SBA loans. Loans Pledged as Collateral Customers has pledged eligible real estate loans as collateral for potential borrowings from the FHLB and FRB in the amount of $5.2 billion and $5.4 billion at September 30, 2019 and December 31, 2018, respectively.

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Leases	LEASES Lessee Customers has operating leases for its branches, LPOs, and administrative offices, with remaining lease terms ranging between 2 months and 8 years. These operating leases comprise substantially all of Customers' obligations in which Customers is the lessee. Most lease agreements consist of initial lease terms ranging between 1 and 5 years, with options to renew the leases or extend the term up to 15 years at Customers' sole discretion. Some operating leases include variable lease payments that are based on an index or rate, such as the CPI. Variable lease payments are not included in the liability or right of use asset and are recognized in the period in which the obligation for those payments are incurred. Customers' operating lease agreements do not contain any material residual value guarantees or material restrictive covenants. Pursuant to these agreements, Customers does not have any commitments that would meet the definition of a finance lease. As most of Customers' operating leases do not provide an implicit rate, Customers utilized its incremental borrowing rate based on the information available at either the adoption of ASC 842 or the commencement date of the lease, whichever was later, when determining the present value of lease payments. Customers does not present ROU assets and corresponding liabilities for operating leases for fiscal years prior to the adoption of this standard. A ROU asset of $23.8 million, net of $1.1 million in accrued rent, was recognized in exchange for lease liabilities of $24.9 million with the adoption of ASU 2016-02 on January 1, 2019. The following table summarizes operating lease ROU assets and operating lease liabilities and their corresponding balance sheet location: (amounts in thousands) Classification September 30, 2019 ASSETS Operating lease ROU assets Other assets $ 20,826 LIABILITIES Operating lease liabilities Other liabilities $ 22,002 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 2019 2019 Operating lease cost (1) Occupancy expenses $ 1,470 $ 4,400 (1) There were no variable lease costs for the three and nine months ended September 30, 2019, and sublease income for operating leases is immaterial. Maturities of non-cancelable operating lease liabilities were as follows at September 30, 2019: (amounts in thousands) September 30, 2019 2019 $ 1,472 2020 5,504 2021 4,708 2022 4,079 2023 3,121 Thereafter 4,918 Total minimum payments 23,802 Less: interest 1,800 Present value of lease liabilities $ 22,002 Customers is not currently involved with the construction or design of an underlying asset. Customers has legally binding minimum lease payments of $2.7 million for leases signed but not yet commenced as of September 30, 2019. Cash paid pursuant to operating lease liability was $1.4 million and $4.2 million for the three and nine months ended September 30, 2019, respectively, and is 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, 2019: (amounts in thousands) September 30, 2019 Weighted average remaining lease term (years) Operating leases 5.2 years Weighted average discount rate Operating leases 2.92 % Future minimum rental commitments pursuant to non-cancelable operating leases as of December 31, 2018, were as follows: (amounts in thousands) December 31, 2018 2019 $ 5,577 2020 5,135 2021 4,513 2022 3,885 2023 2,856 Thereafter 4,699 Total minimum payments $ 26,665 Rent expense was approximately $1.4 million and $4.3 million for the three and nine months ended September 30, 2018, respectively. Equipment Lessor CCF is a wholly-owned subsidiary of Customers Bank and is referred to as the Equipment Finance Group. CCF is primarily focused on originating equipment operating and direct finance equipment leases for a broad range of asset classes. It services vendors, dealers, independent finance companies, bank-owned leasing companies and strategic direct customers in the plastics, packaging, machine tool, construction, transportation and franchise markets. Lease terms typically range from 24 months to 120 months. CCF offers the following lease products: Capital Lease, Purchase Upon Termination, 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 analysis, external studies, and/or third-party appraisals to establish a residual position. For the direct finance leases, only for a Split-TRAC is there a residual risk and the unguaranteed portions are typically nominal. 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 leased assets for impairment. An impairment loss is recognized if the carrying amount of the leased asset exceeds its fair value and is not recoverable. The carrying amount of 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, 2019: (amounts in thousands) Classification September 30, 2019 ASSETS Direct financing leases Lease receivables Loans and leases receivable $ 75,785 Guaranteed residual assets Loans and leases receivable 5,673 Unguaranteed residual assets Loans and leases receivable 1,260 Deferred initial direct costs Loans and leases receivable 667 Unearned income Loans and leases receivable (7,556) Net investment in direct financing leases $ 75,829 Operating leases Investment in operating leases Other assets $ 86,539 Accumulated depreciation Other assets (11,413) Deferred initial direct costs Other assets 952 Net investment in operating leases 76,078 Total lease assets $ 151,907
Leases	LEASES Lessee Customers has operating leases for its branches, LPOs, and administrative offices, with remaining lease terms ranging between 2 months and 8 years. These operating leases comprise substantially all of Customers' obligations in which Customers is the lessee. Most lease agreements consist of initial lease terms ranging between 1 and 5 years, with options to renew the leases or extend the term up to 15 years at Customers' sole discretion. Some operating leases include variable lease payments that are based on an index or rate, such as the CPI. Variable lease payments are not included in the liability or right of use asset and are recognized in the period in which the obligation for those payments are incurred. Customers' operating lease agreements do not contain any material residual value guarantees or material restrictive covenants. Pursuant to these agreements, Customers does not have any commitments that would meet the definition of a finance lease. As most of Customers' operating leases do not provide an implicit rate, Customers utilized its incremental borrowing rate based on the information available at either the adoption of ASC 842 or the commencement date of the lease, whichever was later, when determining the present value of lease payments. Customers does not present ROU assets and corresponding liabilities for operating leases for fiscal years prior to the adoption of this standard. A ROU asset of $23.8 million, net of $1.1 million in accrued rent, was recognized in exchange for lease liabilities of $24.9 million with the adoption of ASU 2016-02 on January 1, 2019. The following table summarizes operating lease ROU assets and operating lease liabilities and their corresponding balance sheet location: (amounts in thousands) Classification September 30, 2019 ASSETS Operating lease ROU assets Other assets $ 20,826 LIABILITIES Operating lease liabilities Other liabilities $ 22,002 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 2019 2019 Operating lease cost (1) Occupancy expenses $ 1,470 $ 4,400 (1) There were no variable lease costs for the three and nine months ended September 30, 2019, and sublease income for operating leases is immaterial. Maturities of non-cancelable operating lease liabilities were as follows at September 30, 2019: (amounts in thousands) September 30, 2019 2019 $ 1,472 2020 5,504 2021 4,708 2022 4,079 2023 3,121 Thereafter 4,918 Total minimum payments 23,802 Less: interest 1,800 Present value of lease liabilities $ 22,002 Customers is not currently involved with the construction or design of an underlying asset. Customers has legally binding minimum lease payments of $2.7 million for leases signed but not yet commenced as of September 30, 2019. Cash paid pursuant to operating lease liability was $1.4 million and $4.2 million for the three and nine months ended September 30, 2019, respectively, and is 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, 2019: (amounts in thousands) September 30, 2019 Weighted average remaining lease term (years) Operating leases 5.2 years Weighted average discount rate Operating leases 2.92 % Future minimum rental commitments pursuant to non-cancelable operating leases as of December 31, 2018, were as follows: (amounts in thousands) December 31, 2018 2019 $ 5,577 2020 5,135 2021 4,513 2022 3,885 2023 2,856 Thereafter 4,699 Total minimum payments $ 26,665 Rent expense was approximately $1.4 million and $4.3 million for the three and nine months ended September 30, 2018, respectively. Equipment Lessor CCF is a wholly-owned subsidiary of Customers Bank and is referred to as the Equipment Finance Group. CCF is primarily focused on originating equipment operating and direct finance equipment leases for a broad range of asset classes. It services vendors, dealers, independent finance companies, bank-owned leasing companies and strategic direct customers in the plastics, packaging, machine tool, construction, transportation and franchise markets. Lease terms typically range from 24 months to 120 months. CCF offers the following lease products: Capital Lease, Purchase Upon Termination, 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 analysis, external studies, and/or third-party appraisals to establish a residual position. For the direct finance leases, only for a Split-TRAC is there a residual risk and the unguaranteed portions are typically nominal. 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 leased assets for impairment. An impairment loss is recognized if the carrying amount of the leased asset exceeds its fair value and is not recoverable. The carrying amount of 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, 2019: (amounts in thousands) Classification September 30, 2019 ASSETS Direct financing leases Lease receivables Loans and leases receivable $ 75,785 Guaranteed residual assets Loans and leases receivable 5,673 Unguaranteed residual assets Loans and leases receivable 1,260 Deferred initial direct costs Loans and leases receivable 667 Unearned income Loans and leases receivable (7,556) Net investment in direct financing leases $ 75,829 Operating leases Investment in operating leases Other assets $ 86,539 Accumulated depreciation Other assets (11,413) Deferred initial direct costs Other assets 952 Net investment in operating leases 76,078 Total lease assets $ 151,907
Leases	LEASES Lessee Customers has operating leases for its branches, LPOs, and administrative offices, with remaining lease terms ranging between 2 months and 8 years. These operating leases comprise substantially all of Customers' obligations in which Customers is the lessee. Most lease agreements consist of initial lease terms ranging between 1 and 5 years, with options to renew the leases or extend the term up to 15 years at Customers' sole discretion. Some operating leases include variable lease payments that are based on an index or rate, such as the CPI. Variable lease payments are not included in the liability or right of use asset and are recognized in the period in which the obligation for those payments are incurred. Customers' operating lease agreements do not contain any material residual value guarantees or material restrictive covenants. Pursuant to these agreements, Customers does not have any commitments that would meet the definition of a finance lease. As most of Customers' operating leases do not provide an implicit rate, Customers utilized its incremental borrowing rate based on the information available at either the adoption of ASC 842 or the commencement date of the lease, whichever was later, when determining the present value of lease payments. Customers does not present ROU assets and corresponding liabilities for operating leases for fiscal years prior to the adoption of this standard. A ROU asset of $23.8 million, net of $1.1 million in accrued rent, was recognized in exchange for lease liabilities of $24.9 million with the adoption of ASU 2016-02 on January 1, 2019. The following table summarizes operating lease ROU assets and operating lease liabilities and their corresponding balance sheet location: (amounts in thousands) Classification September 30, 2019 ASSETS Operating lease ROU assets Other assets $ 20,826 LIABILITIES Operating lease liabilities Other liabilities $ 22,002 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 2019 2019 Operating lease cost (1) Occupancy expenses $ 1,470 $ 4,400 (1) There were no variable lease costs for the three and nine months ended September 30, 2019, and sublease income for operating leases is immaterial. Maturities of non-cancelable operating lease liabilities were as follows at September 30, 2019: (amounts in thousands) September 30, 2019 2019 $ 1,472 2020 5,504 2021 4,708 2022 4,079 2023 3,121 Thereafter 4,918 Total minimum payments 23,802 Less: interest 1,800 Present value of lease liabilities $ 22,002 Customers is not currently involved with the construction or design of an underlying asset. Customers has legally binding minimum lease payments of $2.7 million for leases signed but not yet commenced as of September 30, 2019. Cash paid pursuant to operating lease liability was $1.4 million and $4.2 million for the three and nine months ended September 30, 2019, respectively, and is 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, 2019: (amounts in thousands) September 30, 2019 Weighted average remaining lease term (years) Operating leases 5.2 years Weighted average discount rate Operating leases 2.92 % Future minimum rental commitments pursuant to non-cancelable operating leases as of December 31, 2018, were as follows: (amounts in thousands) December 31, 2018 2019 $ 5,577 2020 5,135 2021 4,513 2022 3,885 2023 2,856 Thereafter 4,699 Total minimum payments $ 26,665 Rent expense was approximately $1.4 million and $4.3 million for the three and nine months ended September 30, 2018, respectively. Equipment Lessor CCF is a wholly-owned subsidiary of Customers Bank and is referred to as the Equipment Finance Group. CCF is primarily focused on originating equipment operating and direct finance equipment leases for a broad range of asset classes. It services vendors, dealers, independent finance companies, bank-owned leasing companies and strategic direct customers in the plastics, packaging, machine tool, construction, transportation and franchise markets. Lease terms typically range from 24 months to 120 months. CCF offers the following lease products: Capital Lease, Purchase Upon Termination, 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 analysis, external studies, and/or third-party appraisals to establish a residual position. For the direct finance leases, only for a Split-TRAC is there a residual risk and the unguaranteed portions are typically nominal. 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 leased assets for impairment. An impairment loss is recognized if the carrying amount of the leased asset exceeds its fair value and is not recoverable. The carrying amount of 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, 2019: (amounts in thousands) Classification September 30, 2019 ASSETS Direct financing leases Lease receivables Loans and leases receivable $ 75,785 Guaranteed residual assets Loans and leases receivable 5,673 Unguaranteed residual assets Loans and leases receivable 1,260 Deferred initial direct costs Loans and leases receivable 667 Unearned income Loans and leases receivable (7,556) Net investment in direct financing leases $ 75,829 Operating leases Investment in operating leases Other assets $ 86,539 Accumulated depreciation Other assets (11,413) Deferred initial direct costs Other assets 952 Net investment in operating leases 76,078 Total lease assets $ 151,907

Regulatory Capital

Regulatory Capital	9 Months Ended
	Sep. 30, 2019
Banking and Thrift [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. 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, 2019 and December 31, 2018, 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 (amounts in thousands) Amount Ratio Amount Ratio Amount Ratio Amount Ratio As of September 30, 2019: Common equity Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 794,745 7.811 % $ 457,840 4.500 % N/A N/A $ 712,195 7.000 % Customers Bank $ 1,103,341 10.847 % $ 457,748 4.500 % $ 661,192 6.500 % $ 712,053 7.000 % Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,012,216 9.949 % $ 610,453 6.000 % N/A N/A $ 864,809 8.500 % Customers Bank $ 1,103,341 10.847 % $ 610,331 6.000 % $ 813,775 8.000 % $ 864,636 8.500 % Total capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,155,499 11.357 % $ 813,938 8.000 % N/A N/A $ 1,068,293 10.500 % Customers Bank $ 1,263,490 12.421 % $ 813,775 8.000 % $ 1,017,218 10.000 % $ 1,068,079 10.500 % Tier 1 capital (to average assets) Customers Bancorp, Inc. $ 1,012,216 9.013 % $ 449,217 4.000 % N/A N/A $ 449,217 4.000 % Customers Bank $ 1,103,341 9.829 % $ 448,997 4.000 % $ 561,246 5.000 % $ 448,997 4.000 % As of December 31, 2018: Common equity Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 745,795 8.964 % $ 374,388 4.500 % N/A N/A $ 530,384 6.375 % Customers Bank $ 1,066,121 12.822 % $ 374,160 4.500 % $ 540,453 6.500 % $ 530,059 6.375 % Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 963,266 11.578 % $ 499,185 6.000 % N/A N/A $ 655,180 7.875 % Customers Bank $ 1,066,121 12.822 % $ 498,879 6.000 % $ 665,173 8.000 % $ 654,779 7.875 % Total capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,081,962 13.005 % $ 665,580 8.000 % N/A N/A $ 821,575 9.875 % Customers Bank $ 1,215,522 14.619 % $ 665,173 8.000 % $ 831,466 10.000 % $ 821,072 9.875 % Tier 1 capital (to average assets) Customers Bancorp, Inc. $ 963,266 9.665 % $ 398,668 4.000 % N/A N/A $ 398,668 4.000 % Customers Bank $ 1,066,121 10.699 % $ 398,570 4.000 % $ 498,212 5.000 % $ 398,570 4.000 % The Basel III risk-based capital rules adopted effective January 1, 2015 require that banks and holding companies maintain a "capital conservation buffer" of 250 basis points in excess of the "minimum capital ratio" or certain elective distributions would be limited. The minimum capital ratio is equal to the prompt corrective action adequately capitalized threshold ratio. The capital conservation buffer was phased in over four years beginning on January 1, 2016, with a maximum buffer of 0.625% of risk weighted assets for 2016, 1.250% for 2017, 1.875% for 2018, and 2.500% for 2019 and thereafter. Effective January 1, 2019, the capital level required to avoid limitation on elective distributions applicable to the Bancorp and the Bank were as follows: (i) a common equity Tier 1 risk-based capital ratio of 7.000%; (ii) a Tier 1 risk-based capital ratio of 8.500%; and (iii) a Total risk-based capital ratio of 10.500%.

Disclosures About Fair Value of

Disclosures About Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2019
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 Topic 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 financial 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 Topic 820, Fair Value Measurements and Disclosures , 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, 2019 and December 31, 2018: Financial Instruments Recorded at Fair Value on a Recurring Basis Investment securities: The fair values of equity securities, available-for-sale 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), and 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). 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 receivable - commercial mortgage warehouse loans (fair value option): The fair value of 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 primarily as short-term bridge financing between the funding of 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 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 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 the Bank’s 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. 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. Financial Instruments Recorded at Fair Value on a Nonrecurring Basis Impaired loans: Impaired loans are those loans that are accounted for under ASC 310, Receivables, in which the Bank has measured impairment generally based on the fair value of the loan’s collateral or discounted cash flow analysis. Fair value is generally determined based upon independent third-party appraisals of the properties that collateralize the loans or discounted cash flows based upon the expected proceeds. 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. Other real estate owned: The fair value of OREO is determined by using appraisals, which may be discounted based on management’s review and changes in market conditions or sales agreements with third parties. All appraisals must be performed in accordance with the Uniform Standards of Professional Appraisal Practice. Appraisals are certified to the Bank and performed by appraisers on the Bank’s approved list of appraisers. Evaluations are completed by a person independent of management. The content of the appraisal depends on the complexity of the property. Appraisals are completed on a “retail value” and an “as is value”. These assets are classified as Level 3 fair values, based upon the lowest level of input that is significant to the fair value measurements. The estimated fair values of Customers' financial instruments at September 30, 2019 and December 31, 2018 were as follows. Fair Value Measurements at September 30, 2019 (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 $ 182,218 $ 182,218 $ 182,218 $ — $ — Debt securities, available for sale 589,541 589,541 — 589,541 — Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election 17,078 17,078 — — 17,078 Equity securities 2,095 2,095 2,095 — — Loans held for sale 502,854 502,854 — 1,755 501,099 Total loans and leases receivable, net of allowance for loan and lease losses 9,723,714 9,991,132 — 2,438,530 7,552,602 FHLB, Federal Reserve Bank and other restricted stock 81,853 81,853 — 81,853 — Derivatives 29,174 29,174 — 29,024 150 Liabilities: Deposits $ 8,925,685 $ 8,929,025 $ 6,502,812 $ 2,426,213 $ — Federal funds purchased 373,000 373,000 373,000 — — FHLB advances 1,040,800 1,042,813 190,800 852,013 — Other borrowings 123,528 124,961 — 124,961 — Subordinated debt 109,050 114,686 — 114,686 — Derivatives 58,316 58,316 — 58,316 — Fair Value Measurements at December 31, 2018 (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 $ 62,135 $ 62,135 $ 62,135 $ — $ — Debt securities, available for sale 663,294 663,294 — 663,294 — Equity securities 1,718 1,718 1,718 — — Loans held for sale 1,507 1,507 — 1,507 — Total loans and leases receivable, net of allowance for loan and lease losses 8,503,522 8,481,128 — 1,405,420 7,075,708 FHLB, Federal Reserve Bank and other restricted stock 89,685 89,685 — 89,685 — Derivatives 14,693 14,693 — 14,624 69 Liabilities: Deposits $ 7,142,236 $ 7,136,009 $ 5,408,055 $ 1,727,954 $ — Federal funds purchased 187,000 187,000 187,000 — — FHLB advances 1,248,070 1,248,046 998,070 249,976 — Other borrowings 123,871 121,718 — 121,718 — Subordinated debt 108,977 110,550 — 110,550 — Derivatives 16,286 16,286 — 16,286 — 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, 2019 and December 31, 2018 were as follows: September 30, 2019 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: Agency-guaranteed residential mortgage-backed securities $ — $ 292,343 $ — $ 292,343 Corporate notes — 297,198 — 297,198 Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election — — 17,078 17,078 Equity securities 2,095 — — 2,095 Derivatives — 29,024 150 29,174 Loans held for sale – fair value option — 1,755 — 1,755 Loans receivable, mortgage warehouse – fair value option — 2,438,530 — 2,438,530 Total assets – recurring fair value measurements $ 2,095 $ 3,058,850 $ 17,228 $ 3,078,173 Liabilities Derivatives $ — $ 58,316 $ — $ 58,316 Measured at Fair Value on a Nonrecurring Basis: Assets Impaired loans, net of reserves of $395 — — 12,754 12,754 Other real estate owned — — 78 78 Total assets – nonrecurring fair value measurements $ — $ — $ 12,832 $ 12,832 December 31, 2018 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 securities: Agency-guaranteed residential mortgage–backed securities $ — $ 305,374 $ — $ 305,374 Corporate notes — 357,920 — 357,920 Equity securities 1,718 — — 1,718 Derivatives — 14,624 69 14,693 Loans held for sale – fair value option — 1,507 — 1,507 Loans receivable, mortgage warehouse – fair value option — 1,405,420 — 1,405,420 Total assets – recurring fair value measurements $ 1,718 $ 2,084,845 $ 69 $ 2,086,632 Liabilities Derivatives $ — $ 16,286 $ — $ 16,286 Measured at Fair Value on a Nonrecurring Basis: Assets Impaired loans, net of reserves of $845 $ — $ — $ 10,876 $ 10,876 Other real estate owned — — 621 621 Total assets – nonrecurring fair value measurements $ — $ — $ 11,497 $ 11,497 The interest-only GNMA securities are Level 3 assets measured at fair value on a recurring basis. For the three and nine months ended September 30, 2019, Customers recorded an increase in fair value of $0.6 million on the interest-only GNMA securities in unrealized gains on investments securities in the consolidated statements of operations. For the three and nine months ended September 30, 2019, cash settlements of $0.7 million were applied to the carrying value of the interest-only GNMA securities, net of premium amortization expense. The changes in residential mortgage loan commitments (Level 3 assets) measured at fair value on a recurring basis for the three and nine months ended September 30, 2019 and 2018 are summarized in the tables below. Additional information about residential mortgage loan commitments can be found in NOTE 11 - DERIVATIVES INSTRUMENTS AND HEDGING ACTIVITIES. Residential Mortgage Loan Commitments Three Months Ended September 30, (amounts in thousands) 2019 2018 Balance at June 30 $ 145 $ 133 Issuances 150 122 Settlements (145) (133) Balance at September 30 $ 150 $ 122 Residential Mortgage Loan Commitments Nine Months Ended September 30, (amounts in thousands) 2019 2018 Balance at December 31 $ 69 $ 60 Issuances 372 338 Settlements (291) (276) Balance at September 30 $ 150 $ 122 There were no transfers between levels during the three and nine months ended September 30, 2019 and 2018. The following table summarizes financial assets and financial liabilities measured at fair value as of September 30, 2019 and December 31, 2018 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. On June 28, 2019, Customers obtained ownership of interest-only GNMA securities that served as the primary collateral for loans made to one commercial mortgage warehouse customer through a Uniform Commercial Code ("UCC") private sale transaction. On June 28, 2019, Customers elected the fair value option for these interest-only GNMA securities acquired on such date. The fair value of these securities at June 30, 2019 was $17.2 million which reflects the valuation obtained from the third party binding bids obtained through the UCC private sale transaction. At September 30, 2019 Customers used an internally developed discounted cash flow model to value the interest-only GNMA securities. The significant unobservable input used in the discounted cash flow model includes prepayment speed. Significant increases (decreases) in this input would result in a significantly lower (higher) fair value measurement. Quantitative Information about Level 3 Fair Value Measurements September 30, 2019 Fair Value Valuation Technique Unobservable Input Range (amounts in thousands) Impaired loans - real estate $ 11,207 Collateral appraisal (1) Liquidation expenses (2) 8% - 8% (8%) Impaired loans - commercial & industrial 1,547 Business asset valuation (3) Business asset valuation adjustments (4) 8% - 20% (15%) Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election 17,078 Discounted cash flow Constant prepayment rate 9% - 14% (12%) Other real estate owned 78 Collateral appraisal (1) Liquidation expenses (2) 8% - 9% (9%) Residential mortgage loan commitments 150 Adjusted market bid Pull-through rate 83% - 83% (83%) (1) Obtained from approved independent appraisers. Appraisals are current and in compliance with credit policy. Customers does not generally discount appraisals. (2) Appraisals are adjusted by management for liquidation expenses. The range and weighted average of liquidation expense adjustments are presented as a percentage of the appraisal. (3) Business asset valuation obtained from independent party. (4) Business asset valuations may be adjusted by management for qualitative factors including economic conditions and the condition of the business assets. The range and weighted average of the business asset adjustments are presented as a percent of the business asset valuation. Quantitative Information about Level 3 Fair Value Measurements December 31, 2018 Fair Value Valuation Technique Unobservable Input Range (amounts in thousands) Impaired loans - real estate $ 10,260 Collateral appraisal (1) Liquidation expenses (2) 8% - 8% (8%) Impaired loans - commercial & industrial 616 Business asset valuation (3) Business asset valuation adjustments (4) 8% - 50% (26%) Other real estate owned 621 Collateral appraisal (1) Liquidation expenses (2) 8% - 8% (8%) Residential mortgage loan commitments 69 Adjusted market bid Pull-through rate 90% - 90% (90%) (1) Obtained from approved independent appraisers. Appraisals are current and in compliance with credit policy. Customers does not generally discount appraisals. (2) Appraisals are adjusted by management for liquidation expenses. The range and weighted average of liquidation expense adjustments are presented as a percentage of the appraisal. (3) Business asset valuation obtained from independent party. (4) Business asset valuations may be adjusted by management for qualitative factors including economic conditions and the condition of the business assets. The range and weighted average of the business asset adjustments are presented as a percentage of the business asset valuation.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	9 Months Ended
	Sep. 30, 2019
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 value 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. Customers also has interest-rate derivatives resulting from a service 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. Cash Flow Hedges of Interest Rate Risk Customers' objectives in using interest-rate derivatives are to add stability to interest expense and to manage exposure to interest-rate movements. To accomplish this objective, Customers primarily uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for Customers making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. The changes in the fair value of derivatives designated and qualifying as cash flow hedges are recorded in AOCI and is subsequently reclassified into earnings in the period that the hedged item affects earnings. To date, such derivatives were used to hedge the variable cash flows associated with the forecasted issuances of debt and a certain variable-rate deposit relationship. Customers discontinues cash flow hedge accounting if it is probable the forecasted hedged transactions will not occur in the initially identified time period. At such time, the associated gains and losses deferred in AOCI are reclassified immediately into earnings and any subsequent changes in the fair value of such derivatives are recognized directly in earnings. Amounts reported in AOCI related to derivatives will be reclassified to interest expense as interest payments are made on Customers' variable-rate debt and a variable-rate deposit relationship. Customers expects to reclassify $5.8 million of losses from AOCI to interest expense during the next 12 months. Customers is hedging its exposure to the variability in future cash flows for forecasted transactions (3-month FHLB advances) and a variable-rate deposit relationship over a maximum period of 57 months (excluding forecasted transactions related to the payment of variable interest on existing financial instruments). At September 30, 2019, Customers had four outstanding interest rate derivatives with notional amounts totaling $725.0 million that were designated as cash flow hedges of interest rate risk. At December 31, 2018, Customers had six outstanding interest rate derivatives with notional amounts totaling $750.0 million that were designated as cash flow hedges of interest rate risk. The outstanding cash flow hedges at September 30, 2019 expire between June 2021 and July 2024. Derivatives Not Designated as Hedging Instruments Customers executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies (typically the loan customers will swap a floating-rate loan for a fixed-rate loan). The customer interest rate swaps are simultaneously offset by interest rate swaps that Customers executes with a third party in order to minimize interest rate risk exposure resulting from such transactions. As the interest rate swaps associated with this program do not meet the hedge accounting requirements, changes in the fair value of both the customer swaps and the offsetting third-party market swaps are recognized directly in earnings. At September 30, 2019, Customers had 124 interest rate swaps with an aggregate notional amount of $1.2 billion related to this program. At December 31, 2018, Customers had 98 interest rate swaps with an aggregate notional amount of $1.0 billion 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 the applicable accounting guidance and are reported at fair value, with changes in fair value recorded directly in earnings. At September 30, 2019 and December 31, 2018, Customers had an outstanding notional balance of residential mortgage loan commitments of $7.6 million and $3.6 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, 2019 and December 31, 2018, Customers had outstanding notional balances of credit derivatives of $114.9 million and $94.9 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 balance sheet as of September 30, 2019 and December 31, 2018. September 30, 2019 Derivative Assets Derivative Liabilities (amounts in thousands) Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as cash flow hedges: Interest rate swaps Other assets $ — Other liabilities $ 27,409 Total $ — $ 27,409 Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 28,718 Other liabilities $ 30,778 Credit contracts Other assets 306 Other liabilities 129 Residential mortgage loan commitments Other assets 150 Other liabilities — Total $ 29,174 $ 30,907 December 31, 2018 Derivative Assets Derivative Liabilities (amounts in thousands) Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as cash flow hedges: Interest rate swaps Other assets $ 256 Other liabilities $ 1,502 Total $ 256 $ 1,502 Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 14,300 Other liabilities $ 14,730 Credit contracts Other assets 68 Other liabilities 54 Residential mortgage loan commitments Other assets 69 Other liabilities — Total $ 14,437 $ 14,784 Effect of Derivative Instruments on Net Income The following tables present amounts included in the consolidated statements of income related to derivatives not designated as hedges for the three and nine months ended September 30, 2019 and 2018. Three Months Ended September 30, 2019 (amounts in thousands) Income Statement Location Amount of Income (Loss) Recognized in Earnings Derivatives not designated as hedging instruments: Interest rate swaps Other non-interest income $ (35) Credit contracts Other non-interest income 85 Residential mortgage loan commitments Mortgage banking income 5 Total $ 55

Business Segments

Business Segments	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Business Segments	BUSINESS SEGMENTS Customers' segment financial reporting reflects the manner in which its chief operating decision makers allocate resources and assess performance. Management has determined that Customers' operations consist of two reportable segments - Customers Bank Business Banking and BankMobile. Each segment generates revenues, manages risk, and offers distinct products and services to targeted customers through different delivery channels. The strategy, marketing, and analysis of these segments vary considerably. The Customers Bank Business Banking segment is delivered predominately to commercial customers in Southeastern Pennsylvania, New York, New Jersey, Massachusetts, Rhode Island, New Hampshire, and Illinois through a single-point-of-contact business model and provides liquidity to residential mortgage originators nationwide through commercial loans to mortgage companies. Lending and deposit gathering activities are focused primarily on privately held businesses, high-net-worth families, selected commercial real estate lending, commercial mortgage companies, and equipment finance. Revenues are generated primarily through net interest income (the difference between interest earned on loans and leases, investments, and other interest earning assets and interest paid on deposits and other borrowed funds) and other non-interest income, such as mortgage warehouse transactional fees and BOLI. The BankMobile segment provides state-of-the-art high-tech digital banking and disbursement services to consumers, students, and the "under banked" nationwide, along with "Banking as a Service" offerings with white label partners. BankMobile is a full-service fintech banking platform that is accessible to customers anywhere and anytime through the customer's smartphone or other web-enabled device. Revenues are currently being generated primarily through interest income on other consumer loans, interchange and card revenue, deposit and wire transfer fees and university fees. The majority of expenses for BankMobile are related to the segment's operation of the ongoing business acquired through the Disbursement business acquisition and costs associated with the development of white label products for its partner. The following tables present the operating results for Customers' reportable business segments for the three and nine months ended September 30, 2019 and 2018. The segment financial results include directly attributable revenues and expenses. Consistent with the presentation of segment results to Customers' chief operating decision makers, overhead costs and preferred stock dividends are assigned to the Customers Bank Business Banking segment. The tax benefit assigned to BankMobile was based on an estimated effective tax rate of 23.15% for 2019 and 24.57% for 2018, respectively. Three Months Ended September 30, 2019 (amounts in thousands) Customers Bank Business Banking BankMobile Consolidated Interest income (1) $ 113,995 $ 12,723 $ 126,718 Interest expense 50,734 249 50,983 Net interest income 63,261 12,474 75,735 Provision for loan and lease losses 2,475 1,951 4,426 Non-interest income 11,757 11,612 23,369 Non-interest expense 38,347 21,245 59,592 Income (loss) before income tax expense (benefit) 34,196 890 35,086 Income tax expense (benefit) 7,814 206 8,020 Net income (loss) 26,382 684 27,066 Preferred stock dividends 3,615 — 3,615 Net income (loss) available to common shareholders $ 22,767 $ 684 $ 23,451 Three Months Ended September 30, 2018 (amounts in thousands) Customers Bank Business Banking BankMobile Consolidated Interest income (1) $ 106,156 $ 3,889 $ 110,045 Interest expense 45,982 62 46,044 Net interest income 60,174 3,827 64,001 Provision for loan and lease losses 2,502 422 2,924 Non-interest income (7,756) 9,840 2,084 Non-interest expense 36,115 20,989 57,104 Income (loss) before income tax expense (benefit) 13,801 (7,744) 6,057 Income tax expense (benefit) 1,930 (1,902) 28 Net income (loss) 11,871 (5,842) 6,029 Preferred stock dividends 3,615 — 3,615 Net income (loss) available to common shareholders $ 8,256 $ (5,842) $ 2,414 (1) Amounts reported include funds transfer pricing of $0.3 million and $3.9 million for the three months ended September 30, 2019 and 2018, respectively, credited to BankMobile for the value provided to the Customers Bank Business Banking segment for the use of excess low/no cost deposits. Nine Months Ended September 30, 2019 (amounts in thousands) Customers Bank Business Banking BankMobile Consolidated Interest income (1) $ 309,882 $ 29,863 $ 339,745 Interest expense 139,402 625 140,027 Net interest income 170,480 29,238 199,718 Provision for loan and lease losses 3,245 11,294 14,539 Non-interest income 20,304 34,821 55,125 Non-interest expense 111,840 61,320 173,160 Income (loss) before income tax expense (benefit) 75,699 (8,555) 67,144 Income tax expense (benefit) 17,324 (1,981) 15,343 Net income (loss) 58,375 (6,574) 51,801 Preferred stock dividends 10,844 — 10,844 Net income (loss) available to common shareholders $ 47,531 $ (6,574) $ 40,957 As of September 30, 2019 Goodwill and other intangibles $ 3,629 $ 11,892 $ 15,521 Total assets (2) $ 11,131,914 $ 591,876 $ 11,723,790 Total deposits $ 8,260,080 $ 665,605 $ 8,925,685 Total non-deposit liabilities (2) $ 1,747,846 $ 31,109 $ 1,778,955 Nine Months Ended September 30, 2018 (amounts in thousands) Customers Bank Business Banking BankMobile Consolidated Interest income (1) $ 302,820 $ 11,829 $ 314,649 Interest expense 118,081 214 118,295 Net interest income 184,739 11,615 196,354 Provision for loan and lease losses 3,128 1,129 4,257 Non-interest income 8,147 30,973 39,120 Non-interest expense 108,168 54,966 163,134 Income (loss) before income tax expense (benefit) 81,590 (13,507) 68,083 Income tax expense (benefit) 17,567 (3,317) 14,250 Net income (loss) 64,023 (10,190) 53,833 Preferred stock dividends 10,844 — 10,844 Net income (loss) available to common shareholders $ 53,179 $ (10,190) $ 42,989 As of September 30, 2018 Goodwill and other intangibles $ 3,629 $ 13,196 $ 16,825 Total assets (2) $ 10,542,175 $ 74,929 $ 10,617,104 Total deposits $ 7,781,225 $ 732,489 $ 8,513,714 Total non-deposit liabilities (2) $ 1,134,251 $ 14,327 $ 1,148,578 (1) Amounts reported include funds transfer pricing of $8.1 million and $11.8 million, for the nine months ended September 30, 2019 and 2018, respectively, credited to BankMobile for the value provided to the Customers Bank Business Banking segment for the use of excess low/no cost deposits.

Non-Interest Revenues

Non-Interest Revenues	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Non-Interest Revenues	NON-INTEREST REVENUES Customers' revenue from contracts with customers in scope of ASC 606 is recognized within non-interest income. The following tables present Customers' non-interest revenues affected by ASC 606 by business segment for the three and nine months ended September 30, 2019 and 2018: Three Months Ended September 30, 2019 Three Months Ended September 30, 2018 (amounts in thousands) Customers Bank Business Banking BankMobile Consolidated Customers Bank Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and card revenue $ 181 $ 6,688 $ 6,869 $ 181 $ 6,903 $ 7,084 Deposit fees 457 3,185 3,642 311 1,691 2,002 University fees - card and disbursement fees — 262 262 — 261 261 Total revenue recognized at point in time 638 10,135 10,773 492 8,855 9,347 Revenue recognized over time: University fees - subscription revenue — 1,006 1,006 — 950 950 Total revenue recognized over time — 1,006 1,006 — 950 950 Total revenue from contracts with customers $ 638 $ 11,141 $ 11,779 $ 492 $ 9,805 $ 10,297 Nine Months Ended September 30, 2019 Nine Months Ended September 30, 2018 (amounts in thousands) Customers Bank Business Banking BankMobile Consolidated Customers Bank Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and card revenue $ 580 $ 21,855 $ 22,435 $ 588 $ 22,539 $ 23,127 Deposit fees 1,190 8,009 9,199 892 4,834 5,726 University fees - card and disbursement fees — 783 783 — 772 772 Total revenue recognized at point in time 1,770 30,647 32,417 1,480 28,145 29,625 Revenue recognized over time: University fees - subscription revenue — 2,953 2,953 — 2,727 2,727 Total revenue recognized over time — 2,953 2,953 — 2,727 2,727 Total revenue from contracts with customers $ 1,770 $ 33,600 $ 35,370 $ 1,480 $ 30,872 $ 32,352

Loss Contingencies

Loss Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Loss Contingencies	LOSS CONTINGENCIES Loss 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. Halbreiner Matter On December 16, 2016, Elizabeth Halbreiner and Robert Halbreiner (“Plaintiffs”) filed a Second Amended Complaint captioned Elizabeth Halbreiner and Robert Halbreiner, v. Customers Bank, Robert B.White, Richard A. Ehst, Thomas Jastrem, Timothy D. Romig, Andrew Bowman, Michael Fuoco, Saldutti Law Group f/k/a Saldutti, LLC a/k/a Saldutti Law, LLC, Robert L. Saldutti, LLC, Robert L. Saldutti, Esquire, Brian J. Schaffer, Esquire, Robert Lieber, Jr., Esquire, Jay Sidhu, James Zardecki, Zardecki Associates LLC, No. 01419 in the First Judicial District of Pennsylvania, Court of Common Pleas of Philadelphia, Trial Division . In this Second Amended Complaint, the Plaintiffs generally allege that Customers Bank, and the other named defendants, conspired to misuse the legal system for improper purposes and it also alleges defamation, false light, tortious interference with contractual relations, infliction of emotional distress, negligent infliction of emotional distress and loss of consortium . On January 6, 2017, Customers Bank filed Preliminary Objections to the Complaint seeking dismissal of the Plaintiff’s claims against Customers Bank and the employees of Customers Bank named as co-defendants. On April 6, 2017, the Court dismissed certain counts and determined to allow certain other counts to proceed. On October 1, 2019, Customers and the Plaintiff came to a preliminary agreement to settle the matter for $1.0 million. Customers established a legal reserve in the amount of $1.0 million based on the preliminary agreement during third quarter 2019. Lifestyle Healthcare Group, Inc. Matter On January 9, 2017, Lifestyle Healthcare Group, Inc., et al (“Plaintiffs”) filed a Complaint captioned Lifestyle Healthcare Group, Inc.; Fred Rappaport; Victoria Rappaport; Lifestyle Management Group, LLC Trading as Lifestyle Real Estate I, LP; Lifestyle Real Estate I GP, LLC; Daniel Muck; Lifestyle Management Group, LLC; Lifestyle Management Group, LLC Trading as Lifestyle I, LP D/B/A Lifestyle Medspa, Plaintiffs v. Customers Bank, Robert White; Saldutti Law, LLC a/k/a Saldutti Law Group; Robert L. Saldutti, Esquire; and Michael Fuoco, Civil Action No. 01206, in the First Judicial District of Pennsylvania, Court of Common Pleas of Philadelphia . In this Complaint, which is related to the Halbreiner Matter described above, the Plaintiffs generally allege wrongful use of civil proceedings and abuse of process in connection with a case filed and later dismissed in federal court, titled, Customers Bank v. Fred Rappaport, et al., U.S.D.C.E.D. Pa., No. 15-6145. On January 30, 2017, Customers Bank filed Preliminary Objections to the Complaint seeking dismissal of Plaintiff’s claims against Customers Bank and Robert White, named as co-defendants. In response to the Preliminary Objections, Lifestyle filed an Amended Complaint against Customers Bank and Robert White. Customers Bank has filed Preliminary Objections to the Second Amended Complaint seeking dismissal of Plaintiff's claim against Customers Bank and Robert White, named as co-defendants. The Court has dismissed certain counts and determined to allow certain other counts to proceed. Customers Bank intends to vigorously defend itself against these allegations but is currently unable to predict the outcome of this lawsuit and therefore cannot determine the likelihood of loss nor estimate a range of possible loss. United States Department of Education Matter In third quarter 2018, Customers received a FPRD letter dated September 5, 2018 from the DOE regarding a focused program review of Higher One's/Customers Bank's administration, as a third party servicer, of the programs authorized pursuant to Title IV of the Higher Education Act of 1965. The DOE program review covered the award years beginning in 2013 through the FPRD issuance date, including the time period when Higher One was acting as the third party servicer prior to Customers' acquisition of the Disbursement business on June 15, 2016. The FPRD determined that, with respect to students enrolled at specified partner institutions, Higher One/Customers did not provide convenient fee-free access to ATMs or bank branch offices in such locations as required by the DOE’s cash management regulations. Those regulations, which were in effect during the period covered by the program review and were revised during that period, seek, among other purposes, to ensure that students can make fee-free cash withdrawals. The FPRD determined that students incurred prohibited costs in accessing Title IV credit balance funds, and the FPRD classifies those costs as financial liabilities of Customers. The FPRD also requires Customers to take prospective action to increase ATM access for students at certain of its partner institutions. Customers disagrees with the FPRD and has elected to appeal the FPRD, including the asserted financial liabilities of $6.5 million, and a request for review has been submitted to trigger an administrative process before the DOE’s Office of Hearing and Appeals. Customers intends to vigorously defend itself against the financial liabilities established in the FPRD through that administrative appeals process and it further intends to pursue resolution of the FPRD’s prospective action requirements during the appeals resolution process. Based on preliminary discussions with the DOE and further analysis performed by Customers and certain partner institutions, Customers has estimated the range of possible loss to be $1.0 million to $3.0 million as of September 30, 2019. Customers established a legal reserve in the amount of $1.0 million during third quarter 2019, as no amount within the range is more likely than any other amount in the range. Bureau of the Fiscal Service Notice of Direct Debit (U.S. Treasury Check Reclamation) On June 21, 2019, Customers received a Notice of Direct Debit (U.S. Treasury Check Reclamation) from the Bureau of the Fiscal Service (“Reclamation Notice”). The Reclamation Notice represents a demand to Customers for the return of funds on a U.S. Treasury check for approximately $5.4 million. Customers filed a written protest pursuant to Code of Federal Regulations, Title 31, Chapter II, Part 240, which resulted in a suspension of the direct debit by the Bureau of the Fiscal Service. Customers is currently unable to predict the outcome of the written protest, and therefore cannot determine the likelihood of loss nor estimate a range of loss. Customers intends to vigorously defend itself against the Reclamation Notice. Customers does not believe that this matter will have a material effect on the consolidated financial statements.

Significant Accounting Polici_2

Significant Accounting Policies and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The interim unaudited consolidated financial statements of Customers Bancorp and subsidiaries 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, 2018 consolidated balance sheet presented in this report has been derived from Customers Bancorp’s audited 2018 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 2018 consolidated financial statements of Customers Bancorp and subsidiaries included in Customers' Annual Report on Form 10-K for the year ended December 31, 2018 filed with the SEC on March 1, 2019 (the "2018 Form 10-K"). The 2018 Form 10-K describes Customers Bancorp’s significant accounting policies, which include its policies on Principles of Consolidation; Cash and Cash Equivalents and Statements of Cash Flows; Restrictions on Cash and Amounts due from Banks; Business Combinations; Investment Securities; Loan Accounting Framework; Loans Held for Sale and Loans at Fair Value; Loans Receivable - Mortgage Warehouse, at Fair Value; Loans Receivable; Purchased Loans; ALLL; Goodwill and Other Intangible Assets; FHLB, Federal Reserve Bank, and Other Restricted Stock; OREO; BOLI; Bank Premises and Equipment; Lessor Operating Leases; Treasury Stock; Income Taxes; Share-Based Compensation; Transfer of Financial Assets; Segment Information; Derivative Instruments and Hedging; Comprehensive Income (Loss); EPS; Loss Contingencies; and Collaborative Arrangements. There have been no material changes to Customers Bancorp's significant accounting policies noted above for the three and nine months ended September 30, 2019, with the exception of the adoption of ASU 2016-02, Leases as described below in accounting standards adopted in 2019 and the election of the fair value option, upon acquisition on June 28, 2019, for certain interest-only GNMA securities that served as the primary collateral for loans made to one commercial mortgage warehouse customer, as further described in NOTE 5 - INVESTMENT SECURITIES. As the interest-only GNMA securities are carried at their current fair value, changes in fair value are reported as unrealized gain (loss) on investment securities within non-interest income. Results for interim periods are not necessarily indicative of those that may be expected for the fiscal year.
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. Recently Issued Accounting Standards Accounting Standards Adopted in 2019 Standard Summary of guidance Effects on Financial Statements ASU 2016-02, Leases Issued February 2016 • Supersedes the lease accounting guidance for both lessees and lessors under ASC 840, Leases. • From the lessee's perspective, the new standard establishes a ROU model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. • Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement for lessees. • This ASU requires lessors to account for leases using an approach that is substantially similar to the existing guidance for sales-type, direct financing leases and operating leases. • Effective January 1, 2019. • In July 2018, the FASB issued ASU 2018-11 “Leases (Topic 842): Targeted Improvements,” which provides lessees the option to apply the new leasing standard to all open leases as of the adoption date. Prior to this ASU issuance, a modified retrospective transition approach was required. • In December 2018, the FASB issued ASU 2018-20 "Leases (Topic 842): Narrow-Scope Improvements for Lessors," which provides lessors a policy election to not evaluate whether certain sales taxes and other similar taxes are lessor costs or lessee costs. Additionally, the update requires certain lessors to exclude from variable payments lessor costs paid by lessees directly to third parties. • In March 2019, the FASB issued ASU 2019-01 "Codification Improvements," which clarifies that lessors who are not manufacturers or dealers should use the original cost of the underlying asset in a lease as its fair value. Additionally, the update states that lessors who are depository or lending institutions within the scope of ASC 942 should present all principal payments received under leases under investing activities in their Statement of Cash Flows and that interim disclosures under ASC 250-10-50-3 are not required in the interim reports of issuers adopting ASC 842. • Customers adopted on January 1, 2019. • The adoption did not materially change Customers' recognition of operating lease expense in its consolidated statements of income. • Customers adopted certain practical expedients available under the new guidance, which did not require it to (1) reassess whether any expired or existing contracts contain leases, (2) reassess the lease classification for any expired or existing leases, (3) reassess initial direct costs for any existing leases, (4) separate non-lease components from the associated lease components, (5) evaluate whether certain sales taxes and other similar taxes are lessor costs, and (6) capitalize short-term leases. Additionally, Customers elected to apply the new lease guidance at the adoption date, rather than at the beginning of the earliest period presented and will continue to present comparative periods prior to January 1, 2019 under Topic 840. Customers did not adopt the hindsight practical expedient. • The adoption of the ASU for Customers' lessor equipment finance business did not have a significant impact on Customers' financial condition, results of operations, and consolidated financial statements. • See NOTE 8 - LEASES. ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs: Premium Amortization on Purchased Callable Debt Securities Issued March 2017 • Requires that premiums for certain callable debt securities held be amortized to their earliest call date. • Effective on January 1, 2019. • Adoption of this new guidance must be applied on a modified retrospective approach. • Customers adopted on January 1, 2019. • The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. Accounting Standards Adopted in 2019 (continued) Standard Summary of guidance Effects on Financial Statements ASU 2017-11, Accounting for Certain Financial Instruments with Down Round Features Issued July 2017 • Changes the classification analysis of certain equity-linked financial instruments (or embedded features) with down round features. • When determining whether certain financial instruments should be classified as liabilities or equity instruments, a down round feature no longer precludes equity classification when assessing whether the instrument is indexed to an entity's own stock. As a result, a freestanding equity-linked financial instrument (or embedded conversion option) would no longer be accounted for as a derivative liability at fair value as a result of the existence of a down round feature. • For freestanding equity-classified financial instruments, the amendments require entities to recognize the effect of the down round feature when it is triggered. That effect is treated as a dividend and as a reduction of net income available to common shareholders in basic EPS. • Effective January 1, 2019. • Customers adopted on January 1, 2019. • The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Non-employee Share-Based Payment Accounting Issued June 2018 • Expands the scope of Topic 718, Compensation - Stock Compensation, which currently only includes share-based payments issued to employees, to also include share-based payments issued to non-employees for goods and services. • Applies to all share-based payment transactions in which a grantor acquires goods or services from non-employees to be used or consumed in a grantor's own operations by issuing share-based payment awards. • With the amended guidance from ASU 2018-07, non-employees share-based payments are measured with an estimate of the fair value of the equity the business is obligated to issue at the grant date (the date that the business and the stock award recipient agree to the terms of the award). • Compensation would be recognized in the same period and in the same manner as if the entity had paid cash for goods or services instead of stock. • Effective January 1, 2019. • Customers adopted on January 1, 2019. • The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. Accounting Standards Issued But Not Yet Adopted Standard Summary of guidance Effects on Financial Statements ASU 2019-04, • Clarifies the scope of the credit losses standard and addresses issues related to accrued interest receivable balances, recoveries, variable interest rates, and prepayments. • Addresses partial-term fair value hedges, fair value hedge basis adjustments and certain transition requirements. • Addresses recognizing and measuring financial instruments, specifically the requirement for remeasurement under ASC 820 when using the measurement alternative, certain disclosure requirements and which equity securities have to be remeasured at historical exchange rates. • Topic 326 Amendments - Effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption permitted. Topic 815 Amendments - Effective for first annual period beginning after the issuance date of this ASU (i.e., fiscal year 2020). Entities that have already adopted the amendments in ASU 2017-12 may elect either to retrospectively apply all the amendments or to prospectively apply all amendments as of the date of adoption. Topic 825 Amendments - Effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. • Customers intends to adopt this guidance on its effective date and is currently evaluating the expected impact of this ASU on its financial condition, results of operations and consolidated financial statements. Please refer below to ASU 2016-13 for further discussion on Customers' adoption of ASU 2016-13 (Topic 326). ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction Between Topic 808 and Topic 606 Issued November 2018 • Clarifies that certain transactions between collaborative arrangement participants should be accounted for as revenue under Topic 606 when the collaborative arrangement participant is a customer in the context of a unit of account. In those situations, all the guidance in Topic 606 should be applied, including recognition, measurement, presentation, and disclosure requirements. • Adds unit-of-account guidance in Topic 808 to align with the guidance in Topic 606 when an entity is assessing whether the collaborative arrangement or a part of the arrangement is within scope of Topic 606. • Requires that in a transaction with a collaborative arrangement participant that is not directly related to sales to third parties, presenting the transaction together with revenue recognized under Topic 606 is precluded if the collaborative arrangement participant is not a customer. • Effective for fiscal year beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption permitted. • Customers intends to adopt this guidance on its effective date and does not expect the adoption of this guidance to materially impact its financial condition, results of operations and consolidated financial statements. Accounting Standards Issued But Not Yet Adopted (continued) Standard Summary of guidance Effects on Financial Statements ASU 2018-15, Internal-Use Software (Subtopic 350-40): Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract Issued August 2018 • Clarifies that service contracts with hosting arrangements must follow internal-use software guidance Subtopic 350-40 when determining which implementation costs to capitalize as an asset related to the service contract and which costs to expense. • Also clarifies that capitalized implementation costs of a hosting arrangement that is a service contract are to be amortized over the term of the hosting arrangement, which includes the noncancelable period of the arrangement plus options to extend the arrangement if reasonably certain to exercise. • Clarifies that existing impairment guidance in Subtopic 350-40 must be applied to the capitalized implementation costs as if they were long-lived assets. • Applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. • Effective for fiscal year beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption permitted. • Customers intends to adopt this guidance on its effective date and does not expect the adoption of this guidance to materially impact its financial condition, results of operations and consolidated financial statements. ASU 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments Issued June 2016 • Requires an entity to utilize a new impairment model known as the CECL model to estimate lifetime expected credit loss and record an allowance that, when deducted from the amortized cost basis of the financial asset (including held-to-maturity debt securities), presents the net amount expected to be collected on the financial asset. • Replaces today's "incurred loss" approach and is expected to result in earlier recognition of credit losses. • For available-for-sale debt securities, entities will be required to record allowances for credit losses rather than reduce the carrying amount, as they do today under the OTTI model, and will be allowed to reverse previously established allowances in the event the credit of the issuer improves. • Simplifies the accounting model for PCI debt securities and loans. • In May 2019, the FASB issued ASU 2019-05 "Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief," which provides entities that have certain instruments within the scope of Topic 326 with an option to irrevocably elect the fair value option in Subtopic 825, Financial Instruments. This relief is to be applied on an instrument-by-instrument basis for eligible instruments upon adoption of Topic 326. • Effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years, with early adoption permitted. • Adoption to be applied through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. • Customers has established a company-wide, cross-discipline governance structure, which provides implementation oversight and continues evaluating the impact of this ASU and reviewing the loss modeling requirements consistent with expected credit loss estimates. • Customers has selected a third-party vendor to assist in the implementation process of its new model. • Customers will utilize lifetime loss rate models for its commercial real estate, commercial and industrial, and consumer portfolios. As Customers' loan portfolios have not been subject to a full economic credit cycle, lifetime loss rates will be based on its peer groups' historical loss rates for each of these portfolios of loans. Additionally, the loss rates will include reasonable and supportable forecasts of macroeconomic conditions. • Customers began to perform parallel runs of the new models to its current ALLL model during second quarter 2019 and continues to evaluate the results and assumptions. • Implementation efforts are continuing to focus on model validation, model calibration, qualitative factors, developing new disclosures, finalizing formal policies and procedures and other governance and control enhancements and documentation. • The FASB recently issued two ASUs that clarified treatment of several topics in the CECL standard, including recoveries and accrued interest, which we plan to implement. The FASB also recently proposed an ASU providing additional guidance on selected topics and we are awaiting final guidance to implement any necessary changes. • The adoption of this ASU will result in an increase to Customers' ALLL which will depend upon the nature and characteristics of Customers' loan and lease portfolio at the adoption date, as well as the macroeconomic conditions and forecasts at that date. • Customers will adopt this new guidance on January 1, 2020.
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 Topic 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 financial 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 Topic 820, Fair Value Measurements and Disclosures , 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 value 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. Customers also has interest-rate derivatives resulting from a service 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. Cash Flow Hedges of Interest Rate Risk Customers' objectives in using interest-rate derivatives are to add stability to interest expense and to manage exposure to interest-rate movements. To accomplish this objective, Customers primarily uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for Customers making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Components of Earnings 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) 2019 2018 2019 2018 Net income available to common shareholders $ 23,451 $ 2,414 $ 40,957 $ 42,989 Weighted-average number of common shares outstanding - basic 31,223,777 31,671,122 31,142,400 31,554,407 Share-based compensation plans 420,951 601,622 438,629 750,573 Warrants — 4,846 — 7,475 Weighted-average number of common shares - diluted 31,644,728 32,277,590 31,581,029 32,312,455 Basic earnings per common share $ 0.75 $ 0.08 $ 1.32 $ 1.36 Diluted earnings per common share $ 0.74 $ 0.07 $ 1.30 $ 1.33
Anti-dilutive Securities Excluded from Computation of Earnings Per Share	The following is a summary of 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 2019 2018 2019 2018 Share-based compensation awards 2,181,195 1,787,670 2,233,160 1,105,287

Changes in Accumulated Other _2

Changes in Accumulated Other Comprehensive Income (Loss) By Component (Tables)	9 Months Ended
	Sep. 30, 2019
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, 2019 and 2018. All amounts are presented net of tax. Amounts in parentheses indicate reductions to AOCI. Three Months Ended September 30, 2019 Available-for-Sale Debt Securities (amounts in thousands) Unrealized Gains (Losses) Foreign Currency Items Total Unrealized Gains (Losses) Unrealized Gains (Losses) on Cash Flow Hedges Total Balance - June 30, 2019 $ 6,802 $ — $ 6,802 $ (16,795) $ (9,993) Other comprehensive income (loss) before reclassifications 5,815 — 5,815 (3,821) 1,994 Amounts reclassified from accumulated other comprehensive income (loss) to net income (1) (741) — (741) 566 (175) Net current-period other comprehensive income (loss) 5,074 — 5,074 (3,255) 1,819 Balance - September 30, 2019 $ 11,876 $ — $ 11,876 $ (20,050) $ (8,174) Nine Months Ended September 30, 2019 Available-for-Sale Debt Securities (amounts in thousands) Unrealized Gains (Losses) Foreign Currency Items Total Unrealized Gains (Losses) Unrealized Total Balance - December 31, 2018 $ (21,741) $ — $ (21,741) $ (922) $ (22,663) Other comprehensive income (loss) before reclassifications 34,358 — 34,358 (19,391) 14,967 Amounts reclassified from accumulated other comprehensive income (loss) to net income (1) (741) — (741) 263 (478) Net current-period other comprehensive income (loss) 33,617 — 33,617 (19,128) 14,489 Balance - September 30, 2019 $ 11,876 $ — $ 11,876 $ (20,050) $ (8,174) (1) Reclassification amounts for available-for-sale debt securities are reported as gain or loss on sale of investment securities on the consolidated statements of income. During both the three and nine months ended September 30, 2019 reclassification amounts of $1.0 million ($0.7 million net of taxes) were reported as gain on sale of investment securities on the consolidated statements of income. Reclassification amounts for cash flow hedges are reported as interest expense for the applicable hedged items on the consolidated statements of income. During the three and nine months ended September 30, 2019, reclassification amounts of $0.8 million ($0.6 million net of taxes) and $0.4 million ($0.3 million net of taxes), respectively, were reported as increases to interest expense for the applicable hedged items on the consolidated statements of income. Three Months Ended September 30, 2018 Available-for-Sale Debt Securities (amounts in thousands) Unrealized Gains (Losses) Foreign Currency Items Unrealized Gains (Losses) on Available-For-Sale Securities Unrealized Gains (Losses) on Cash Flow Hedges Total Balance - June 30, 2018 $ (35,711) $ — $ (35,711) $ 1,714 $ (33,997) Other comprehensive income (loss) before reclassifications (1,206) — (1,206) 3,006 1,800 Amounts reclassified from accumulated other comprehensive income (loss) to net income (1) 13,808 — 13,808 (1,864) 11,944 Net current-period other comprehensive income (loss) 12,602 — 12,602 1,142 13,744 Balance - September 30, 2018 $ (23,109) $ — $ (23,109) $ 2,856 $ (20,253) Nine Months Ended September 30, 2018 Available-for-Sale Debt Securities (amounts in thousands) Unrealized Gains (Losses) Foreign Currency Items Unrealized Gains (Losses) on Available-For-Sale Securities Unrealized Total Balance - December 31, 2017 $ (249) $ 88 $ (161) $ (198) $ (359) Reclassification of the income tax effects of the Tax Cuts and Jobs Act (2) (256) — (256) (42) (298) Reclassification of net unrealized gains on equity securities (2) (953) (88) (1,041) — (1,041) Balance after reclassifications on January 1, 2018 (1,458) — (1,458) (240) (1,698) Other comprehensive income (loss) before reclassifications (35,459) — (35,459) 5,055 (30,404) Amounts reclassified from accumulated other comprehensive income (loss) to net income (1) 13,808 — 13,808 (1,959) 11,849 Net current-period other comprehensive income (21,651) — (21,651) 3,096 (18,555) Balance - September 30, 2018 $ (23,109) $ — $ (23,109) $ 2,856 $ (20,253) (1) Reclassification amounts for available-for-sale debt securities are reported as gain or loss on sale of investment securities on the consolidated statements of income. During both the three and nine months ended September 30, 2018, reclassification amounts of $18.7 million ($13.8 million net of taxes), were reported as loss on sale of investment securities on the consolidated statements of income. Reclassification amounts for cash flow hedges are reported as interest expense for the applicable hedged items on the consolidated statements of income or other non-interest income on the consolidated statements of income for gains from the discontinuance of cash flow hedge accounting for certain interest rate swaps. During the three and nine months ended September 30, 2018, reclassification amounts of $303 thousand ($224 thousand net of taxes) and $175 thousand ($129 thousand net of taxes) were reported as interest expense on hedged items on the the consolidated statements of income. During the three and nine months ended September 30, 2018, reclassification amounts of $2.8 million ($2.1 million net of taxes), respectively, were reported as other non-interest income on the consolidated statements of income from the discontinuance of cash flow hedge accounting for certain interest rate swaps. (2) Amounts reclassified from accumulated other comprehensive income (loss) on January 1, 2018 as a result of the adoption of ASU 2018-02 and ASU 2016-01 resulted in a decrease in AOCI of $1.3 million and a corresponding increase in retained earnings for the same amount.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Summary of Amortized Cost and Approximate Fair Value of Investment Securities	The amortized cost and approximate fair value of investment securities as of September 30, 2019 and December 31, 2018 are summarized in the tables below: September 30, 2019 (amounts in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale debt securities: Agency-guaranteed residential mortgage-backed securities $ 288,829 $ 3,514 $ — $ 292,343 Corporate notes (1) 284,663 12,535 — 297,198 Available-for-sale debt securities $ 573,492 $ 16,049 $ — 589,541 Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities (2) 17,078 Equity securities (3) 2,095 Total investment securities, at fair value $ 608,714 December 31, 2018 (amounts in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale debt securities: Agency-guaranteed residential mortgage-backed securities $ 311,267 $ — $ (5,893) $ 305,374 Corporate notes (1) 381,407 920 (24,407) 357,920 Available-for-sale debt securities $ 692,674 $ 920 $ (30,300) 663,294 Equity securities (3) 1,718 Total investment securities, at fair value $ 665,012 (1) At September 30, 2019, includes corporate securities issued by other domestic bank holding companies. At December 31, 2018, includes corporate securities issued by other domestic and foreign bank holding companies. (2) Reported at fair value with fair value changes recorded in non-interest income based on a fair value option election. (3) Includes equity securities issued by a foreign entity.
Debt Securities, Available-for-sale	The following table presents proceeds from the sale of available-for-sale debt securities and gross gains and gross losses realized on those sales for the three and nine months ended September 30, 2019 and 2018. Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) 2019 2018 2019 2018 Proceeds from sale of available-for-sale securities $ 97,555 $ 476,182 $ 97,555 $ 476,182 Gross gains $ 1,936 $ — $ 1,936 $ — Gross losses (935) (18,659) (935) (18,659) Net gains / (losses) $ 1,001 $ (18,659) $ 1,001 $ (18,659)
Summary of Available-for-Sale Debt Securities by Stated Maturity	The following table shows debt securities by stated maturity. Debt securities backed by mortgages and interest-only GNMA securities 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, 2019 (amounts in thousands) Amortized Fair Due in one year or less $ — $ — Due after one year through five years 5,000 5,238 Due after five years through ten years 277,662 289,862 Due after ten years 2,000 2,098 Agency-guaranteed residential mortgage-backed securities 288,830 292,343 Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities — 17,078 Total debt securities $ 573,492 $ 606,619
Gross Unrealized Losses and Fair Value, Aggregated by Investment Category	Gross unrealized losses and fair value of Customers' available-for-sale debt securities aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at December 31, 2018 were as follows: December 31, 2018 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: Agency-guaranteed residential mortgage-backed securities $ 305,374 $ (5,893) $ — $ — $ 305,374 $ (5,893) Corporate notes 310,036 (24,407) — — 310,036 (24,407) Total $ 615,410 $ (30,300) $ — $ — $ 615,410 $ (30,300)

Loans Held for Sale (Tables)

Loans Held for Sale (Tables)	9 Months Ended
	Sep. 30, 2019
Receivables Held-for-sale [Abstract]
Composition of Loans Held for Sale	The composition of loans held for sale as of September 30, 2019 and December 31, 2018 was as follows: September 30, 2019 December 31, 2018 (amounts in thousands) Commercial loans: Multi-family loans, at lower of cost or fair value $ 499,774 $ — Total commercial loans held for sale 499,774 — Consumer loans: Home equity conversion mortgages, at lower of cost or fair value 1,325 — Residential mortgage loans, at fair value 1,755 1,507 Total consumer loans held for sale 3,080 1,507 Loans held for sale $ 502,854 $ 1,507

Loans and Leases Receivable a_2

Loans and Leases Receivable and Allowance for Loan and Lease Losses (Tables)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Schedule of Loans and Leases Receivable	The following table presents loans and leases receivable as of September 30, 2019 and December 31, 2018. (amounts in thousands) September 30, 2019 December 31, 2018 Loans receivable, mortgage warehouse, at fair value $ 2,438,530 $ 1,405,420 Loans receivable: Commercial: Multi-family 2,300,244 3,285,297 Commercial and industrial (including owner occupied commercial real estate) (1) 2,363,599 1,951,277 Commercial real estate non-owner occupied 1,268,557 1,125,106 Construction 61,200 56,491 Total commercial loans and leases receivable 5,993,600 6,418,171 Consumer: Residential real estate 628,786 566,561 Manufactured housing 72,616 79,731 Other consumer 643,553 74,035 Total consumer loans receivable 1,344,955 720,327 Loans and leases receivable 7,338,555 7,138,498 Deferred (fees) costs and unamortized (discounts) premiums, net (2,318) (424) Allowance for loan and lease losses (51,053) (39,972) Total loans and leases receivable, net of allowance for loan and lease losses $ 9,723,714 $ 8,503,522 (1) Includes direct finance equipment leases of $75.2 million and $54.5 million at September 30, 2019 and December 31, 2018, 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, 2019 and December 31, 2018: September 30, 2019 (amounts in thousands) 30-89 Days past due (1) 90 Days or more past due (1) Total past due (1) Non-accrual Current (2) Purchased-credit-impaired loans (3) Total loans and leases (4) Multi-family $ 3,662 $ — $ 3,662 $ — $ 2,294,926 $ 1,656 $ 2,300,244 Commercial and industrial 860 — 860 5,314 1,881,586 374 1,888,134 Commercial real estate owner occupied 686 — 686 2,068 465,934 6,777 475,465 Commercial real estate non-owner occupied — — — 83 1,264,361 4,113 1,268,557 Construction — — — — 61,200 — 61,200 Residential real estate 2,485 — 2,485 6,093 616,533 3,675 628,786 Manufactured housing (5) 3,153 1,943 5,096 1,567 64,362 1,591 72,616 Other consumer 3,810 — 3,810 1,140 638,400 203 643,553 Total $ 14,656 $ 1,943 $ 16,599 $ 16,265 $ 7,287,302 $ 18,389 $ 7,338,555 December 31, 2018 (amounts in thousands) 30-89 Days past due (1) 90 Days or more past due (1) Total past due (1) Non-accrual Current (2) Purchased-credit-impaired loans (3) Total loans and leases (4) Multi-family $ — $ — $ — $ 1,155 $ 3,282,452 $ 1,690 $ 3,285,297 Commercial and industrial 1,914 — 1,914 17,764 1,353,586 536 1,373,800 Commercial real estate owner occupied 193 — 193 1,037 567,809 8,438 577,477 Commercial real estate non-owner occupied 1,190 — 1,190 129 1,119,443 4,344 1,125,106 Construction — — — — 56,491 — 56,491 Residential real estate 5,940 — 5,940 5,605 550,679 4,337 566,561 Manufactured housing (5) 3,926 2,188 6,114 1,693 69,916 2,008 79,731 Other consumer 200 — 200 111 73,503 221 74,035 Total $ 13,363 $ 2,188 $ 15,551 $ 27,494 $ 7,073,879 $ 21,574 $ 7,138,498 (1) Includes past due loans and leases that are accruing interest because collection is considered probable. (2) Loans and leases where next payment due is less than 30 days from the report date. (3) Purchased-credit-impaired loans aggregated into a pool are accounted for as a single asset with a single composite interest rate and an aggregate expectation of cash flows, and the past due status of the pools, or that of the individual loans within the pools, is not meaningful. Due to the credit impaired nature of the loans, the loans are recorded at a discount reflecting estimated future cash flows and the Bank recognizes interest income on each pool of loans reflecting the estimated yield and passage of time. Such loans are considered to be performing. Purchased-credit-impaired loans that are not in pools accrete interest when the timing and amount of their expected cash flows are reasonably estimable, and are reported as performing loans. (4) Amounts exclude deferred costs and fees, unamortized premiums and discounts, and the ALLL. (5) Certain manufactured housing loans purchased in 2010 are supported by cash reserves held at the Bank of $24 thousand and $0.5 million at September 30, 2019 and December 31, 2018, respectively, which are used to fund past-due payments when the loan becomes 90 days or more delinquent. Each quarter, these funds are evaluated to determine if they would be sufficient to absorb the probable incurred losses within the manufactured housing portfolio.
Schedule of Allowance for Loan Losses	The changes in the ALLL for the three and nine months ended September 30, 2019 and 2018, and the loans and leases and ALLL by loan and lease type based on impairment-evaluation method as of September 30, 2019 and December 31, 2018 are presented in the tables below. Three Months Ended September 30, 2019 Multi-family Commercial and industrial Commercial real estate owner occupied Commercial real estate non-owner occupied Construction Residential real estate Manufactured housing Other consumer Total (amounts in thousands) Ending Balance, $ 9,926 $ 13,736 $ 3,360 $ 6,159 $ 649 $ 4,168 $ 123 $ 10,267 $ 48,388 Charge-offs — (349) (45) — — — — (1,806) (2,200) Recoveries — 369 10 — 8 5 — 47 439 Provision for loan and lease losses (2,428) 2,119 (435) 281 1 (90) 904 4,074 4,426 Ending Balance, $ 7,498 $ 15,875 $ 2,890 $ 6,440 $ 658 $ 4,083 $ 1,027 $ 12,582 $ 51,053 Nine Months Ended Ending Balance, $ 11,462 $ 12,145 $ 3,320 $ 6,093 $ 624 $ 3,654 $ 145 $ 2,529 $ 39,972 Charge-offs (541) (532) (119) — — (109) — (3,493) (4,794) Recoveries 7 826 235 — 128 20 — 120 1,336 Provision for loan and lease losses (3,430) 3,436 (546) 347 (94) 518 882 13,426 14,539 Ending Balance, $ 7,498 $ 15,875 $ 2,890 $ 6,440 $ 658 $ 4,083 $ 1,027 $ 12,582 $ 51,053 As of September 30, 2019 (amounts in thousands) Loans and leases receivable: Individually evaluated for impairment $ — $ 5,375 $ 2,084 $ 83 $ — $ 9,057 $ 9,929 $ 1,140 $ 27,668 Collectively evaluated for impairment 2,298,588 1,882,385 466,604 1,264,361 61,200 616,054 61,096 642,210 7,292,498 Loans acquired with credit deterioration 1,656 374 6,777 4,113 — 3,675 1,591 203 18,389 Total loans and leases receivable $ 2,300,244 $ 1,888,134 $ 475,465 $ 1,268,557 $ 61,200 $ 628,786 $ 72,616 $ 643,553 $ 7,338,555 Allowance for loan and lease losses: Individually evaluated for impairment $ — $ 167 $ — $ — $ — $ 40 $ 123 $ 65 $ 395 Collectively evaluated for impairment 7,498 15,448 2,882 4,555 658 3,727 904 12,362 48,034 Loans acquired with credit deterioration — 260 8 1,885 — 316 — 155 2,624 Total allowance for loan and lease losses $ 7,498 $ 15,875 $ 2,890 $ 6,440 $ 658 $ 4,083 $ 1,027 $ 12,582 $ 51,053 Three Months Ended September 30, 2018 Multi-family Commercial and industrial Commercial real estate owner occupied Commercial real estate non-owner occupied Construction Residential real estate Manufactured housing Other consumer Total (amounts in thousands) Ending Balance, $ 12,069 $ 12,258 $ 2,988 $ 6,698 $ 992 $ 2,908 $ 149 $ 226 $ 38,288 Charge-offs — (90) — — — — — (437) (527) Recoveries — 30 — 5 11 6 — 4 56 Provision for loan and lease losses (240) 516 164 (254) 59 987 (55) 1,747 2,924 Ending Balance, $ 11,829 $ 12,714 $ 3,152 $ 6,449 $ 1,062 $ 3,901 $ 94 $ 1,540 $ 40,741 Nine Months Ended Ending Balance, $ 12,168 $ 10,918 $ 3,232 $ 7,437 $ 979 $ 2,929 $ 180 $ 172 $ 38,015 Charge-offs — (314) (501) — — (407) — (1,155) (2,377) Recoveries — 205 326 5 231 69 — 10 846 Provision for loan and lease losses (339) 1,905 95 (993) (148) 1,310 (86) 2,513 4,257 Ending Balance, $ 11,829 $ 12,714 $ 3,152 $ 6,449 $ 1,062 $ 3,901 $ 94 $ 1,540 $ 40,741 As of December 31, 2018 (amounts in thousands) Loans and leases receivable: Individually evaluated for impairment $ 1,155 $ 17,828 $ 1,069 $ 129 $ — $ 8,631 $ 10,195 $ 111 $ 39,118 Collectively evaluated for impairment 3,282,452 1,355,436 567,970 1,120,633 56,491 553,593 67,528 73,703 7,077,806 Loans acquired with credit deterioration 1,690 536 8,438 4,344 — 4,337 2,008 221 21,574 Total loans and leases receivable $ 3,285,297 $ 1,373,800 $ 577,477 $ 1,125,106 $ 56,491 $ 566,561 $ 79,731 $ 74,035 $ 7,138,498 Allowance for loan and lease losses: Individually evaluated for impairment $ 539 $ 261 $ 1 $ — $ — $ 41 $ 3 $ — $ 845 Collectively evaluated for impairment 10,923 11,516 3,319 4,161 624 3,227 89 2,390 36,249 Loans acquired with credit deterioration — 368 — 1,932 — 386 53 139 2,878 Total allowance for loan and lease losses $ 11,462 $ 12,145 $ 3,320 $ 6,093 $ 624 $ 3,654 $ 145 $ 2,529 $ 39,972
Summary of Recorded Investment Net Charge-Offs, Unpaid Principal Balance and Related Allowance for Impaired Loans	The following tables present the recorded investment (net of charge-offs), unpaid principal balance, and related allowance by loan type for impaired loans that were individually evaluated for impairment as of September 30, 2019 and December 31, 2018 and the average recorded investment and interest income recognized for the three and nine months ended September 30, 2019 and 2018. Customers had no impaired lease receivables as of September 30, 2019 and December 31, 2018, respectively. Purchased-credit-impaired loans are considered to be performing and are not included in the tables below. September 30, 2019 Three Months Ended Nine Months Ended (amounts in thousands) Recorded investment net of charge-offs Unpaid principal balance Related allowance Average recorded investment Interest income recognized Average recorded investment Interest income recognized With no related allowance recorded: Multi-family $ — $ — $ — $ — $ 149 $ 499 $ 149 Commercial and industrial 4,602 6,245 — 4,631 991 8,528 1,009 Commercial real estate owner occupied 2,068 2,849 — 1,425 74 1,111 95 Commercial real estate non-owner occupied 83 194 — 89 7 102 7 Residential real estate 4,686 5,007 — 4,526 21 4,654 82 Manufactured housing 4,496 4,496 — 7,229 97 8,656 335 Other consumer 195 195 — 164 76 137 84 With an allowance recorded: Multi-family — — — — — 289 — Commercial and industrial 773 773 167 3,358 — 4,277 97 Commercial real estate owner occupied 16 16 — 91 — 131 1 Residential real estate 4,371 4,371 40 4,057 47 3,937 101 Manufactured housing 5,433 5,433 123 2,799 45 1,483 49 Other consumer 945 945 65 586 — 293 — Total $ 27,668 $ 30,524 $ 395 $ 28,955 $ 1,507 $ 34,097 $ 2,009 December 31, 2018 Three Months Ended Nine Months Ended (amounts in thousands) Recorded investment net of charge-offs Unpaid principal balance Related allowance Average recorded investment Interest income recognized Average recorded investment Interest income recognized With no related allowance recorded: Multi-family $ — $ — $ — $ 1,343 $ — $ 672 $ 8 Commercial and industrial 13,660 15,263 — 7,765 166 7,623 168 Commercial real estate owner occupied 1,037 1,766 — 711 — 711 — Commercial real estate non-owner occupied 129 241 — 1,347 — 774 8 Residential real estate 4,842 5,128 — 4,281 23 3,952 25 Manufactured housing 10,027 10,027 — 10,147 144 10,011 421 Other consumer 111 111 — 103 1 83 1 With an allowance recorded: Multi-family 1,155 1,155 539 — — — — Commercial and industrial 4,168 4,351 261 5,787 27 7,089 39 Commercial real estate owner occupied 32 32 1 336 9 546 11 Residential real estate 3,789 3,789 41 4,398 61 4,760 124 Manufactured housing 168 168 3 227 4 225 10 Total $ 39,118 $ 42,031 $ 845 $ 36,445 $ 435 $ 36,446 $ 815
Summary of Troubled Debt Restructuring Based on Loan Type and Accrual Status	The following table presents total TDRs based on loan type and accrual status at September 30, 2019 and December 31, 2018. Nonaccrual TDRs are included in the reported amount of total non-accrual loans. September 30, 2019 December 31, 2018 (amounts in thousands) Accruing TDRs Nonaccrual TDRs Total Accruing TDRs Nonaccrual TDRs Total Commercial and industrial $ 61 $ 29 $ 90 $ 64 $ 5,273 $ 5,337 Commercial real estate owner occupied 16 — 16 32 — 32 Residential real estate 2,964 639 3,603 3,026 667 3,693 Manufactured housing 8,362 1,424 9,786 8,502 1,620 10,122 Other consumer — 11 11 — 12 12 Total TDRs $ 11,403 $ 2,103 $ 13,506 $ 11,624 $ 7,572 $ 19,196
Analysis of Loans Modified in Troubled Debt Restructuring by Type of Concession	The following table presents loans modified in a TDR by type of concession for the three and nine months ended September 30, 2019 and 2018. There were no modifications that involved forgiveness of debt for the three and nine months ended September 30, 2019 and 2018. Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (dollars in thousands) Number of loans Recorded investment Number of loans Recorded investment Number of loans Recorded investment Number of loans Recorded investment Extensions of maturity — $ — — $ — 2 $ 514 1 $ 56 Interest-rate reductions 7 196 8 473 19 628 32 1,402 Total 7 $ 196 8 $ 473 21 $ 1,142 33 $ 1,458
Summary of Loans Modified in Troubled Debt Restructurings and Related Recorded Investment	The following table provides, by loan type, the number of loans modified in TDRs and the related recorded investment for the three and nine months ended September 30, 2019 and 2018. Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (dollars in thousands) Number of loans Recorded investment Number of loans Recorded investment Number of loans Recorded investment Number of loans Recorded investment Commercial and industrial — $ — — $ — 1 $ 431 — $ — Manufactured housing 7 196 7 321 19 628 30 1,093 Residential real estate — — 1 152 1 83 2 352 Other consumer — — — — — — 1 13 Total loans 7 $ 196 8 $ 473 21 $ 1,142 33 $ 1,458
Summary of Loans Modified in Troubled Debt Restructurings and Related Recorded Investment Within Twelve Months	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, 2019 September 30, 2018 (dollars in thousands) Number of loans Recorded investment Number of loans Recorded investment Manufactured housing 3 $ 76 — $ — Residential real estate 1 82 — — Total loans 4 $ 158 — $ —
Changes in Accretable Yield Related to Purchased-credit-impaired Loans	The changes in accretable yield related to PCI loans for the three and nine months ended September 30, 2019 and 2018 were as follows: Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) 2019 2018 2019 2018 Accretable yield balance, beginning of period $ 5,807 $ 7,403 $ 6,178 $ 7,825 Accretion to interest income (256) (310) (911) (1,164) Reclassification from nonaccretable difference and disposals, net (67) (4) 217 428 Accretable yield balance, end of period $ 5,484 $ 7,089 $ 5,484 $ 7,089
Credit Ratings of Covered and Non-Covered Loan Portfolio	The following tables present the credit ratings of loans and leases receivable as of September 30, 2019 and December 31, 2018. September 30, 2019 (amounts in thousands) Multi-family Commercial and industrial Commercial real estate owner occupied Commercial real estate non-owner occupied Construction Residential real estate Manufactured housing Other consumer Total (3) Pass/Satisfactory $ 2,259,366 $ 1,836,857 $ 459,549 $ 1,200,664 $ 61,200 $ — $ — $ — $ 5,817,636 Special Mention 21,449 27,454 8,342 11,633 — — — — 68,878 Substandard 19,429 23,823 7,574 56,260 — — — — 107,086 Performing (1) — — — — — 620,208 65,953 638,603 1,324,764 Non-performing (2) — — — — — 8,578 6,663 4,950 20,191 Total $ 2,300,244 $ 1,888,134 $ 475,465 $ 1,268,557 $ 61,200 $ 628,786 $ 72,616 $ 643,553 $ 7,338,555 December 31, 2018 (amounts in thousands) Multi-family Commercial and industrial Commercial real estate owner occupied Commercial real estate non-owner occupied Construction Residential real estate Manufactured housing Other consumer Total (3) Pass/Satisfactory $ 3,201,822 $ 1,306,466 $ 562,639 $ 1,054,493 $ 56,491 $ — $ — $ — $ 6,181,911 Special Mention 55,696 30,551 9,730 30,203 — — — — 126,180 Substandard 27,779 36,783 5,108 40,410 — — — — 110,080 Performing (1) — — — — — 555,016 71,924 73,724 700,664 Non-performing (2) — — — — — 11,545 7,807 311 19,663 Total $ 3,285,297 $ 1,373,800 $ 577,477 $ 1,125,106 $ 56,491 $ 566,561 $ 79,731 $ 74,035 $ 7,138,498 (1) Includes residential real estate, manufactured housing, and other consumer loans not assigned internal ratings. (2) Includes residential real estate, manufactured housing, and other consumer loans that are past due and still accruing interest or on nonaccrual status. (3) Excludes commercial mortgage warehouse loans reported at fair value.
Schedule of Loan Purchases and Sales	Purchases and sales of loans were as follows for the three and nine months ended September 30, 2019 and 2018: Three Months Ended September 30, Nine Months Ended September 30, (amounts in thousands) 2019 2018 2019 2018 Purchases (1) Residential real estate $ — $ 25,807 $ 105,858 $ 303,181 Other consumer (2) 83,898 46,843 534,150 46,843 Total $ 83,898 $ 72,650 $ 640,008 $ 350,024 Sales (3) Commercial and industrial (4) $ — $ (6,691) $ — $ (23,840) Commercial real estate owner occupied (4) — (5,387) — (14,968) Total $ — $ (12,078) $ — $ (38,808) (1) Amounts reported in the above table are the unpaid principal balance at time of purchase. The purchase price was 96.3% and 95.3% of loans outstanding for the three months ended September 30, 2019 and 2018, respectively. The purchase price was 99.4% and 99.3% of loans outstanding for the nine months ended September 30, 2019 and 2018, respectively. (2) Other consumer loan purchases for the three and nine months ended September 30, 2019 consist of third-party originated unsecured consumer loans. None of the loans are considered sub-prime at the time of origination or purchase. Customers considers sub-prime borrowers to be those with FICO scores below 660. (3) Amounts reported in the above table are the unpaid principal balance at time of sale. There were no loan sales for the three and nine months ended September 30, 2019. For the three and nine months ended September 30, 2018, loan sales resulted in gains of $1.1 million and $3.4 million, respectively. (4) Primarily sales of SBA loans.

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
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, 2019 ASSETS Operating lease ROU assets Other assets $ 20,826 LIABILITIES Operating lease liabilities Other liabilities $ 22,002
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 2019 2019 Operating lease cost (1) Occupancy expenses $ 1,470 $ 4,400 (1) There were no variable lease costs for the three and nine months ended September 30, 2019, and sublease income for operating leases is immaterial.
Maturities of Non-cancelable Operating Lease Liabilities	Maturities of non-cancelable operating lease liabilities were as follows at September 30, 2019: (amounts in thousands) September 30, 2019 2019 $ 1,472 2020 5,504 2021 4,708 2022 4,079 2023 3,121 Thereafter 4,918 Total minimum payments 23,802 Less: interest 1,800 Present value of lease liabilities $ 22,002
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, 2019: (amounts in thousands) September 30, 2019 Weighted average remaining lease term (years) Operating leases 5.2 years Weighted average discount rate Operating leases 2.92 %
Schedule of Future Minimum Rental Payments for Operating Leases	Future minimum rental commitments pursuant to non-cancelable operating leases as of December 31, 2018, were as follows: (amounts in thousands) December 31, 2018 2019 $ 5,577 2020 5,135 2021 4,513 2022 3,885 2023 2,856 Thereafter 4,699 Total minimum payments $ 26,665
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, 2019: (amounts in thousands) Classification September 30, 2019 ASSETS Direct financing leases Lease receivables Loans and leases receivable $ 75,785 Guaranteed residual assets Loans and leases receivable 5,673 Unguaranteed residual assets Loans and leases receivable 1,260 Deferred initial direct costs Loans and leases receivable 667 Unearned income Loans and leases receivable (7,556) Net investment in direct financing leases $ 75,829 Operating leases Investment in operating leases Other assets $ 86,539 Accumulated depreciation Other assets (11,413) Deferred initial direct costs Other assets 952 Net investment in operating leases 76,078 Total lease assets $ 151,907

Regulatory Capital (Tables)

Regulatory Capital (Tables)	9 Months Ended
	Sep. 30, 2019
Banking and Thrift [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 (amounts in thousands) Amount Ratio Amount Ratio Amount Ratio Amount Ratio As of September 30, 2019: Common equity Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 794,745 7.811 % $ 457,840 4.500 % N/A N/A $ 712,195 7.000 % Customers Bank $ 1,103,341 10.847 % $ 457,748 4.500 % $ 661,192 6.500 % $ 712,053 7.000 % Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,012,216 9.949 % $ 610,453 6.000 % N/A N/A $ 864,809 8.500 % Customers Bank $ 1,103,341 10.847 % $ 610,331 6.000 % $ 813,775 8.000 % $ 864,636 8.500 % Total capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,155,499 11.357 % $ 813,938 8.000 % N/A N/A $ 1,068,293 10.500 % Customers Bank $ 1,263,490 12.421 % $ 813,775 8.000 % $ 1,017,218 10.000 % $ 1,068,079 10.500 % Tier 1 capital (to average assets) Customers Bancorp, Inc. $ 1,012,216 9.013 % $ 449,217 4.000 % N/A N/A $ 449,217 4.000 % Customers Bank $ 1,103,341 9.829 % $ 448,997 4.000 % $ 561,246 5.000 % $ 448,997 4.000 % As of December 31, 2018: Common equity Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 745,795 8.964 % $ 374,388 4.500 % N/A N/A $ 530,384 6.375 % Customers Bank $ 1,066,121 12.822 % $ 374,160 4.500 % $ 540,453 6.500 % $ 530,059 6.375 % Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 963,266 11.578 % $ 499,185 6.000 % N/A N/A $ 655,180 7.875 % Customers Bank $ 1,066,121 12.822 % $ 498,879 6.000 % $ 665,173 8.000 % $ 654,779 7.875 % Total capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,081,962 13.005 % $ 665,580 8.000 % N/A N/A $ 821,575 9.875 % Customers Bank $ 1,215,522 14.619 % $ 665,173 8.000 % $ 831,466 10.000 % $ 821,072 9.875 % Tier 1 capital (to average assets) Customers Bancorp, Inc. $ 963,266 9.665 % $ 398,668 4.000 % N/A N/A $ 398,668 4.000 % Customers Bank $ 1,066,121 10.699 % $ 398,570 4.000 % $ 498,212 5.000 % $ 398,570 4.000 %

Disclosures About Fair Value _2

Disclosures About Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Estimated Fair Values of Financial Instruments	The estimated fair values of Customers' financial instruments at September 30, 2019 and December 31, 2018 were as follows. Fair Value Measurements at September 30, 2019 (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 $ 182,218 $ 182,218 $ 182,218 $ — $ — Debt securities, available for sale 589,541 589,541 — 589,541 — Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election 17,078 17,078 — — 17,078 Equity securities 2,095 2,095 2,095 — — Loans held for sale 502,854 502,854 — 1,755 501,099 Total loans and leases receivable, net of allowance for loan and lease losses 9,723,714 9,991,132 — 2,438,530 7,552,602 FHLB, Federal Reserve Bank and other restricted stock 81,853 81,853 — 81,853 — Derivatives 29,174 29,174 — 29,024 150 Liabilities: Deposits $ 8,925,685 $ 8,929,025 $ 6,502,812 $ 2,426,213 $ — Federal funds purchased 373,000 373,000 373,000 — — FHLB advances 1,040,800 1,042,813 190,800 852,013 — Other borrowings 123,528 124,961 — 124,961 — Subordinated debt 109,050 114,686 — 114,686 — Derivatives 58,316 58,316 — 58,316 — Fair Value Measurements at December 31, 2018 (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 $ 62,135 $ 62,135 $ 62,135 $ — $ — Debt securities, available for sale 663,294 663,294 — 663,294 — Equity securities 1,718 1,718 1,718 — — Loans held for sale 1,507 1,507 — 1,507 — Total loans and leases receivable, net of allowance for loan and lease losses 8,503,522 8,481,128 — 1,405,420 7,075,708 FHLB, Federal Reserve Bank and other restricted stock 89,685 89,685 — 89,685 — Derivatives 14,693 14,693 — 14,624 69 Liabilities: Deposits $ 7,142,236 $ 7,136,009 $ 5,408,055 $ 1,727,954 $ — Federal funds purchased 187,000 187,000 187,000 — — FHLB advances 1,248,070 1,248,046 998,070 249,976 — Other borrowings 123,871 121,718 — 121,718 — Subordinated debt 108,977 110,550 — 110,550 — Derivatives 16,286 16,286 — 16,286 —
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, 2019 and December 31, 2018 were as follows: September 30, 2019 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: Agency-guaranteed residential mortgage-backed securities $ — $ 292,343 $ — $ 292,343 Corporate notes — 297,198 — 297,198 Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election — — 17,078 17,078 Equity securities 2,095 — — 2,095 Derivatives — 29,024 150 29,174 Loans held for sale – fair value option — 1,755 — 1,755 Loans receivable, mortgage warehouse – fair value option — 2,438,530 — 2,438,530 Total assets – recurring fair value measurements $ 2,095 $ 3,058,850 $ 17,228 $ 3,078,173 Liabilities Derivatives $ — $ 58,316 $ — $ 58,316 Measured at Fair Value on a Nonrecurring Basis: Assets Impaired loans, net of reserves of $395 — — 12,754 12,754 Other real estate owned — — 78 78 Total assets – nonrecurring fair value measurements $ — $ — $ 12,832 $ 12,832 December 31, 2018 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 securities: Agency-guaranteed residential mortgage–backed securities $ — $ 305,374 $ — $ 305,374 Corporate notes — 357,920 — 357,920 Equity securities 1,718 — — 1,718 Derivatives — 14,624 69 14,693 Loans held for sale – fair value option — 1,507 — 1,507 Loans receivable, mortgage warehouse – fair value option — 1,405,420 — 1,405,420 Total assets – recurring fair value measurements $ 1,718 $ 2,084,845 $ 69 $ 2,086,632 Liabilities Derivatives $ — $ 16,286 $ — $ 16,286 Measured at Fair Value on a Nonrecurring Basis: Assets Impaired loans, net of reserves of $845 $ — $ — $ 10,876 $ 10,876 Other real estate owned — — 621 621 Total assets – nonrecurring fair value measurements $ — $ — $ 11,497 $ 11,497
Statement of Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis	The changes in residential mortgage loan commitments (Level 3 assets) measured at fair value on a recurring basis for the three and nine months ended September 30, 2019 and 2018 are summarized in the tables below. Additional information about residential mortgage loan commitments can be found in NOTE 11 - DERIVATIVES INSTRUMENTS AND HEDGING ACTIVITIES. Residential Mortgage Loan Commitments Three Months Ended September 30, (amounts in thousands) 2019 2018 Balance at June 30 $ 145 $ 133 Issuances 150 122 Settlements (145) (133) Balance at September 30 $ 150 $ 122 Residential Mortgage Loan Commitments Nine Months Ended September 30, (amounts in thousands) 2019 2018 Balance at December 31 $ 69 $ 60 Issuances 372 338 Settlements (291) (276) Balance at September 30 $ 150 $ 122
Summary of Financial Assets and Financial Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis	The following table summarizes financial assets and financial liabilities measured at fair value as of September 30, 2019 and December 31, 2018 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. On June 28, 2019, Customers obtained ownership of interest-only GNMA securities that served as the primary collateral for loans made to one commercial mortgage warehouse customer through a Uniform Commercial Code ("UCC") private sale transaction. On June 28, 2019, Customers elected the fair value option for these interest-only GNMA securities acquired on such date. The fair value of these securities at June 30, 2019 was $17.2 million which reflects the valuation obtained from the third party binding bids obtained through the UCC private sale transaction. At September 30, 2019 Customers used an internally developed discounted cash flow model to value the interest-only GNMA securities. The significant unobservable input used in the discounted cash flow model includes prepayment speed. Significant increases (decreases) in this input would result in a significantly lower (higher) fair value measurement. Quantitative Information about Level 3 Fair Value Measurements September 30, 2019 Fair Value Valuation Technique Unobservable Input Range (amounts in thousands) Impaired loans - real estate $ 11,207 Collateral appraisal (1) Liquidation expenses (2) 8% - 8% (8%) Impaired loans - commercial & industrial 1,547 Business asset valuation (3) Business asset valuation adjustments (4) 8% - 20% (15%) Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election 17,078 Discounted cash flow Constant prepayment rate 9% - 14% (12%) Other real estate owned 78 Collateral appraisal (1) Liquidation expenses (2) 8% - 9% (9%) Residential mortgage loan commitments 150 Adjusted market bid Pull-through rate 83% - 83% (83%) (1) Obtained from approved independent appraisers. Appraisals are current and in compliance with credit policy. Customers does not generally discount appraisals. (2) Appraisals are adjusted by management for liquidation expenses. The range and weighted average of liquidation expense adjustments are presented as a percentage of the appraisal. (3) Business asset valuation obtained from independent party. (4) Business asset valuations may be adjusted by management for qualitative factors including economic conditions and the condition of the business assets. The range and weighted average of the business asset adjustments are presented as a percent of the business asset valuation. Quantitative Information about Level 3 Fair Value Measurements December 31, 2018 Fair Value Valuation Technique Unobservable Input Range (amounts in thousands) Impaired loans - real estate $ 10,260 Collateral appraisal (1) Liquidation expenses (2) 8% - 8% (8%) Impaired loans - commercial & industrial 616 Business asset valuation (3) Business asset valuation adjustments (4) 8% - 50% (26%) Other real estate owned 621 Collateral appraisal (1) Liquidation expenses (2) 8% - 8% (8%) Residential mortgage loan commitments 69 Adjusted market bid Pull-through rate 90% - 90% (90%) (1) Obtained from approved independent appraisers. Appraisals are current and in compliance with credit policy. Customers does not generally discount appraisals. (2) Appraisals are adjusted by management for liquidation expenses. The range and weighted average of liquidation expense adjustments are presented as a percentage of the appraisal. (3) Business asset valuation obtained from independent party. (4) Business asset valuations may be adjusted by management for qualitative factors including economic conditions and the condition of the business assets. The range and weighted average of the business asset adjustments are presented as a percentage of the business asset valuation.

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
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 balance sheet as of September 30, 2019 and December 31, 2018. September 30, 2019 Derivative Assets Derivative Liabilities (amounts in thousands) Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as cash flow hedges: Interest rate swaps Other assets $ — Other liabilities $ 27,409 Total $ — $ 27,409 Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 28,718 Other liabilities $ 30,778 Credit contracts Other assets 306 Other liabilities 129 Residential mortgage loan commitments Other assets 150 Other liabilities — Total $ 29,174 $ 30,907 December 31, 2018 Derivative Assets Derivative Liabilities (amounts in thousands) Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as cash flow hedges: Interest rate swaps Other assets $ 256 Other liabilities $ 1,502 Total $ 256 $ 1,502 Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 14,300 Other liabilities $ 14,730 Credit contracts Other assets 68 Other liabilities 54 Residential mortgage loan commitments Other assets 69 Other liabilities — Total $ 14,437 $ 14,784
Effect of Derivative Financial Instruments on Comprehensive Income	The following tables present amounts included in the consolidated statements of income related to derivatives not designated as hedges for the three and nine months ended September 30, 2019 and 2018. Three Months Ended September 30, 2019 (amounts in thousands) Income Statement Location Amount of Income (Loss) Recognized in Earnings Derivatives not designated as hedging instruments: Interest rate swaps Other non-interest income $ (35) Credit contracts Other non-interest income 85 Residential mortgage loan commitments Mortgage banking income 5 Total $ 55 Three Months Ended September 30, 2018 (amounts in thousands) Income Statement Location Amount of Income (Loss) Recognized in Earnings Derivatives not designated as hedging instruments: Interest rate swaps Other non-interest income $ 1,139 Credit contracts Other non-interest income 156 Residential mortgage loan commitments Mortgage banking income (11) Total $ 1,284 Nine Months Ended September 30, 2019 (amounts in thousands) Income Statement Location Amount of Income Derivatives not designated as hedging instruments: Interest rate swaps Other non-interest income $ 63 Credit contracts Other non-interest income 228 Residential mortgage loan commitments Mortgage banking income 82 Total $ 373 Nine Months Ended September 30, 2018 (amounts in thousands) Income Statement Location Amount of Income (Loss) Derivatives not designated as hedging instruments: Interest rate swaps Other non-interest income $ 1,472 Credit contracts Other non-interest income 119 Residential mortgage loan commitments Mortgage banking income 62 Total $ 1,653 Effect of Derivative Instruments on Comprehensive Income The following tables present the effect of Customers' derivative financial instruments on comprehensive income for the three and nine months ended September 30, 2019 and 2018. Three Months Ended September 30, 2019 (amounts in thousands) Amount of Gain (Loss) Recognized in OCI on Derivatives (1) Location of Gain (Loss) Reclassified from Accumulated OCI into Income Amount of Gain (Loss) Reclassified from Accumulated OCI into Income Derivatives in cash flow hedging relationships: Interest rate swaps $ (3,821) Interest expense $ (764) Three Months Ended September 30, 2018 (amounts in thousands) Amount of Gain (Loss) Recognized in OCI on Derivatives (1) Location of Gain (Loss) Reclassified from Accumulated OCI into Income Amount of Gain (Loss) Reclassified from Accumulated OCI into Income Derivatives in cash flow hedging relationships: Interest rate swaps $ 3,006 Interest expense $ (303) Other non-interest income (2) 2,822 $ 2,519 Nine Months Ended September 30, 2019 (amounts in thousands) Amount of Gain (Loss) Recognized in OCI on Derivatives (1) Location of Gain (Loss) Reclassified from Accumulated OCI into Income Amount of Gain (Loss) Reclassified from Accumulated OCI into Income Derivative in cash flow hedging relationships: Interest rate swaps $ (19,391) Interest expense $ (355) Nine Months Ended September 30, 2018 (amounts in thousands) Amount of Gain (Loss) Recognized in OCI on Derivatives (1) Location of Gain (Loss) Reclassified from Accumulated OCI into Income Amount of Gain (Loss) Reclassified from Accumulated OCI into Income Derivative in cash flow hedging relationships: Interest rate swaps $ 5,055 Interest expense $ (175) Other non-interest income (2) 2,822 $ 2,647 (1) Amounts presented are net of taxes. See NOTE 4 - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) for the total effect on other comprehensive income (loss) from derivatives designated as cash flow hedges for the periods presented. (2) Includes income recognized from discontinued cash flow hedges.
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 with institutional counterparties are subject to master netting arrangements and are included in the table below. Interest rate swaps with commercial banking customers and residential mortgage loan commitments are not subject to master netting arrangements and are excluded from the table below. Customers has not made a policy election to offset its derivative positions. Offsetting of Financial Assets and Derivative Assets At September 30, 2019 Gross Amount of Recognized Assets Gross Amounts Offset in the Consolidated Balance Sheet Net Amounts of Assets Presented in the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet (amounts in thousands) Financial Instruments Cash Collateral Received Net Amount Description Interest rate swap derivatives with institutional counterparties $ 131 $ — $ 131 $ — $ — $ 131 Offsetting of Financial Assets and Derivative Assets At December 31, 2018 Gross Amount of Recognized Assets Gross Amounts Offset in the Consolidated Balance Sheet Net Amounts of Assets Presented in the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet (amounts in thousands) Financial Instruments Cash Collateral Received Net Amount Description Interest rate swap derivatives with institutional counterparties $ 7,529 $ — $ 7,529 $ — $ 1,860 $ 5,669
Summary of Offsetting of Financial Liabilities and Derivative Liabilities	Offsetting of Financial Liabilities and Derivative Liabilities At September 30, 2019 Gross Amount of Recognized Liabilities Gross Amounts Offset in the Consolidated Balance Sheet Net Amounts of Liabilities Presented in the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet (amounts in thousands) Financial Instruments Cash Collateral Pledged Net Amount Description Interest rate swap derivatives with institutional counterparties $ 58,056 $ — $ 58,056 $ — $ 57,832 $ 224 Offsetting of Financial Liabilities and Derivative Liabilities At December 31, 2018 Gross Amount of Recognized Liabilities Gross Amounts Offset in the Consolidated Balance Sheet Net Amounts of Liabilities Presented in the Consolidated Balance Sheet Gross Amounts Not Offset in the Consolidated Balance Sheet Net Amount (amounts in thousands) Financial Instruments Cash Collateral Pledged Description Interest rate swap derivatives with institutional counterparties $ 9,077 $ — $ 9,077 $ — $ 702 $ 8,375

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following tables present the operating results for Customers' reportable business segments for the three and nine months ended September 30, 2019 and 2018. The segment financial results include directly attributable revenues and expenses. Consistent with the presentation of segment results to Customers' chief operating decision makers, overhead costs and preferred stock dividends are assigned to the Customers Bank Business Banking segment. The tax benefit assigned to BankMobile was based on an estimated effective tax rate of 23.15% for 2019 and 24.57% for 2018, respectively. Three Months Ended September 30, 2019 (amounts in thousands) Customers Bank Business Banking BankMobile Consolidated Interest income (1) $ 113,995 $ 12,723 $ 126,718 Interest expense 50,734 249 50,983 Net interest income 63,261 12,474 75,735 Provision for loan and lease losses 2,475 1,951 4,426 Non-interest income 11,757 11,612 23,369 Non-interest expense 38,347 21,245 59,592 Income (loss) before income tax expense (benefit) 34,196 890 35,086 Income tax expense (benefit) 7,814 206 8,020 Net income (loss) 26,382 684 27,066 Preferred stock dividends 3,615 — 3,615 Net income (loss) available to common shareholders $ 22,767 $ 684 $ 23,451 Three Months Ended September 30, 2018 (amounts in thousands) Customers Bank Business Banking BankMobile Consolidated Interest income (1) $ 106,156 $ 3,889 $ 110,045 Interest expense 45,982 62 46,044 Net interest income 60,174 3,827 64,001 Provision for loan and lease losses 2,502 422 2,924 Non-interest income (7,756) 9,840 2,084 Non-interest expense 36,115 20,989 57,104 Income (loss) before income tax expense (benefit) 13,801 (7,744) 6,057 Income tax expense (benefit) 1,930 (1,902) 28 Net income (loss) 11,871 (5,842) 6,029 Preferred stock dividends 3,615 — 3,615 Net income (loss) available to common shareholders $ 8,256 $ (5,842) $ 2,414 (1) Amounts reported include funds transfer pricing of $0.3 million and $3.9 million for the three months ended September 30, 2019 and 2018, respectively, credited to BankMobile for the value provided to the Customers Bank Business Banking segment for the use of excess low/no cost deposits. Nine Months Ended September 30, 2019 (amounts in thousands) Customers Bank Business Banking BankMobile Consolidated Interest income (1) $ 309,882 $ 29,863 $ 339,745 Interest expense 139,402 625 140,027 Net interest income 170,480 29,238 199,718 Provision for loan and lease losses 3,245 11,294 14,539 Non-interest income 20,304 34,821 55,125 Non-interest expense 111,840 61,320 173,160 Income (loss) before income tax expense (benefit) 75,699 (8,555) 67,144 Income tax expense (benefit) 17,324 (1,981) 15,343 Net income (loss) 58,375 (6,574) 51,801 Preferred stock dividends 10,844 — 10,844 Net income (loss) available to common shareholders $ 47,531 $ (6,574) $ 40,957 As of September 30, 2019 Goodwill and other intangibles $ 3,629 $ 11,892 $ 15,521 Total assets (2) $ 11,131,914 $ 591,876 $ 11,723,790 Total deposits $ 8,260,080 $ 665,605 $ 8,925,685 Total non-deposit liabilities (2) $ 1,747,846 $ 31,109 $ 1,778,955 Nine Months Ended September 30, 2018 (amounts in thousands) Customers Bank Business Banking BankMobile Consolidated Interest income (1) $ 302,820 $ 11,829 $ 314,649 Interest expense 118,081 214 118,295 Net interest income 184,739 11,615 196,354 Provision for loan and lease losses 3,128 1,129 4,257 Non-interest income 8,147 30,973 39,120 Non-interest expense 108,168 54,966 163,134 Income (loss) before income tax expense (benefit) 81,590 (13,507) 68,083 Income tax expense (benefit) 17,567 (3,317) 14,250 Net income (loss) 64,023 (10,190) 53,833 Preferred stock dividends 10,844 — 10,844 Net income (loss) available to common shareholders $ 53,179 $ (10,190) $ 42,989 As of September 30, 2018 Goodwill and other intangibles $ 3,629 $ 13,196 $ 16,825 Total assets (2) $ 10,542,175 $ 74,929 $ 10,617,104 Total deposits $ 7,781,225 $ 732,489 $ 8,513,714 Total non-deposit liabilities (2) $ 1,134,251 $ 14,327 $ 1,148,578 (1) Amounts reported include funds transfer pricing of $8.1 million and $11.8 million, for the nine months ended September 30, 2019 and 2018, respectively, credited to BankMobile for the value provided to the Customers Bank Business Banking segment for the use of excess low/no cost deposits.

Non-Interest Revenues (Tables)

Non-Interest Revenues (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables present Customers' non-interest revenues affected by ASC 606 by business segment for the three and nine months ended September 30, 2019 and 2018: Three Months Ended September 30, 2019 Three Months Ended September 30, 2018 (amounts in thousands) Customers Bank Business Banking BankMobile Consolidated Customers Bank Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and card revenue $ 181 $ 6,688 $ 6,869 $ 181 $ 6,903 $ 7,084 Deposit fees 457 3,185 3,642 311 1,691 2,002 University fees - card and disbursement fees — 262 262 — 261 261 Total revenue recognized at point in time 638 10,135 10,773 492 8,855 9,347 Revenue recognized over time: University fees - subscription revenue — 1,006 1,006 — 950 950 Total revenue recognized over time — 1,006 1,006 — 950 950 Total revenue from contracts with customers $ 638 $ 11,141 $ 11,779 $ 492 $ 9,805 $ 10,297 Nine Months Ended September 30, 2019 Nine Months Ended September 30, 2018 (amounts in thousands) Customers Bank Business Banking BankMobile Consolidated Customers Bank Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and card revenue $ 580 $ 21,855 $ 22,435 $ 588 $ 22,539 $ 23,127 Deposit fees 1,190 8,009 9,199 892 4,834 5,726 University fees - card and disbursement fees — 783 783 — 772 772 Total revenue recognized at point in time 1,770 30,647 32,417 1,480 28,145 29,625 Revenue recognized over time: University fees - subscription revenue — 2,953 2,953 — 2,727 2,727 Total revenue recognized over time — 2,953 2,953 — 2,727 2,727 Total revenue from contracts with customers $ 1,770 $ 33,600 $ 35,370 $ 1,480 $ 30,872 $ 32,352

Description of the Business - A

Description of the Business - Additional Information (Detail)	Sep. 30, 2019derivative
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of branches (branch)	13

Earnings Per Share - Components

Earnings Per Share - Components of Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net income (loss) available to common shareholders	$ 23,451	$ 2,414	$ 40,957	$ 42,989
Weighted-average number of common shares outstanding - basic (shares)	31,223,777	31,671,122	31,142,400	31,554,407
Share-based compensation plans (shares)	420,951	601,622	438,629	750,573
Warrants (shares)	0	4,846	0	7,475
Weighted-average number of common shares - diluted (shares)	31,644,728	32,277,590	31,581,029	32,312,455
Basic earnings per common share (usd per share)	$ 0.75	$ 0.08	$ 1.32	$ 1.36
Diluted earnings per common share (usd per share)	$ 0.74	$ 0.07	$ 1.30	$ 1.33

Earnings Per Share - Anti-dilut

Earnings Per Share - Anti-dilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share-based compensation awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (shares)	2,181,195	1,787,670	2,233,160	1,105,287

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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jan. 01, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 991,405	$ 936,227	$ 956,816	$ 920,964
Other comprehensive income (loss) before reclassifications	1,994	1,800	14,967	(30,404)
Amounts reclassified from accumulated other comprehensive income (loss) to net income	(175)	11,944	(478)	11,849
Net current-period other comprehensive income (loss)	1,819	13,744	14,489	(18,555)
Ending balance	1,019,150	954,812	1,019,150	954,812
Reclassification, available-for-sale debt securities, after tax	(5,074)	(12,602)	(33,617)	21,651
Reclassification adjustment for (gains) losses included in net income	764	(2,519)	355	(2,647)
Unrealized Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	6,802	(35,711)	(21,741)	(249)
Balance after reclassification adjustments					$ (1,458)
Other comprehensive income (loss) before reclassifications	5,815	(1,206)	34,358	(35,459)
Amounts reclassified from accumulated other comprehensive income (loss) to net income	(741)	13,808	(741)	13,808
Net current-period other comprehensive income (loss)	5,074	12,602	33,617	(21,651)
Ending balance	11,876	(23,109)	11,876	(23,109)
Foreign Currency Items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	0	0	0	88
Balance after reclassification adjustments					0
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss) to net income	0	0	0	0
Net current-period other comprehensive income (loss)	0	0	0	0
Ending balance	0	0	0	0
Total Unrealized Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	6,802	(35,711)	(21,741)	(161)
Balance after reclassification adjustments					(1,458)
Other comprehensive income (loss) before reclassifications	5,815	(1,206)	34,358	(35,459)
Amounts reclassified from accumulated other comprehensive income (loss) to net income	(741)	13,808	(741)	13,808
Net current-period other comprehensive income (loss)	5,074	12,602	33,617	(21,651)
Ending balance	11,876	(23,109)	11,876	(23,109)
Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(16,795)	1,714	(922)	(198)
Balance after reclassification adjustments					(240)
Other comprehensive income (loss) before reclassifications	(3,821)	3,006	(19,391)	5,055
Amounts reclassified from accumulated other comprehensive income (loss) to net income	566	(1,864)	263	(1,959)
Net current-period other comprehensive income (loss)	(3,255)	1,142	(19,128)	3,096
Ending balance	(20,050)	2,856	(20,050)	2,856
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(9,993)	(33,997)	(22,663)	(359)
Balance after reclassification adjustments					(1,698)
Ending balance	(8,174)	(20,253)	(8,174)	(20,253)
Retained Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	334,157	299,990	316,651	258,076
Ending balance	357,608	302,404	357,608	302,404
Accounting Standards Update 2018-02
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					0
Accounting Standards Update 2018-02 | Unrealized Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					(256)
Accounting Standards Update 2018-02 | Foreign Currency Items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					0
Accounting Standards Update 2018-02 | Total Unrealized Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					(256)
Accounting Standards Update 2018-02 | Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					(42)
Accounting Standards Update 2018-02 | Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					(298)
Accounting Standards Update 2018-02 | Retained Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					298
Accounting Standards Update 2016-01
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					0
Accounting Standards Update 2016-01 | Unrealized Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					(953)
Accounting Standards Update 2016-01 | Foreign Currency Items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					(88)
Accounting Standards Update 2016-01 | Total Unrealized Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					(1,041)
Accounting Standards Update 2016-01 | Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					0
Accounting Standards Update 2016-01 | Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					(1,041)
Accounting Standards Update 2016-01 | Retained Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					1,041
Combined effect of multiple accounting pronouncements on components of shareholders' equity | Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					(1,300)
Combined effect of multiple accounting pronouncements on components of shareholders' equity | Retained Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative effect of new accounting principle in period of adoption					$ 1,300
Gain (Loss) on Sale of Investment Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Reclassification, available-for-sale debt securities, before tax	(1,000)	18,700	(1,000)	18,700
Reclassification, available-for-sale debt securities, after tax	(700)	13,800	(700)	13,800
Interest Expense
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Reclassification adjustment for (gains) losses included in net income	800	303	400	175
Reclassification adjustment for (gains) losses included in net income	$ 600	224	$ 300	129
Non-interest Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Reclassification adjustment for (gains) losses included in net income		(2,800)		(2,800)
Reclassification adjustment for (gains) losses included in net income		$ (2,100)		$ (2,100)

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost and Approximate Fair Value of Investment Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 573,492		$ 692,674
Gross Unrealized Gains	16,049		920
Gross Unrealized Losses	0		(30,300)
Fair Value	589,541		663,294
Equity securities, at fair value	2,095		1,718
Investment securities, at fair value	608,714		665,012
Agency-guaranteed residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	288,829		311,267
Gross Unrealized Gains	3,514		0
Gross Unrealized Losses	0		(5,893)
Fair Value	292,343		305,374
Corporate notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	284,663		381,407
Gross Unrealized Gains	12,535		920
Gross Unrealized Losses	0		(24,407)
Fair Value	297,198		$ 357,920
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election
Debt Securities, Available-for-sale [Line Items]
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities	$ 17,078	$ 17,200

Investment Securities - Additio

Investment Securities - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)derivative	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)derivative	Sep. 30, 2018USD ($)	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Investment [Line Items]
Loss upon acquisition of interest-only GNMA securities	$ 0	$ 0	$ 7,476	$ 0
Unrealized gain (loss) on investment securities	$ 1,300	$ (1,200)	$ 1,000	$ (1,500)
Number of available-for-sale investment securities in the less than twelve month category | derivative	0		0
Number of available-for-sale investment securities in the twelve month category | derivative	0		0
Pledged investment securities fair value	$ 21,800		$ 21,800			$ 23,000
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election
Investment [Line Items]
Loss upon acquisition of interest-only GNMA securities			7,500
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities	$ 17,078		$ 17,078		$ 17,200

Investment Securities - Summa_2

Investment Securities - Summary of Sale of Available for Sale Debt Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale of available-for-sale securities	$ 97,555	$ 476,182	$ 97,555	$ 476,182
Gross gains	1,936	0	1,936	0
Gross losses	(935)	(18,659)	(935)	(18,659)
Net gains / (losses)	$ 1,001	$ (18,659)	$ 1,001	$ (18,659)

Investment Securities - Summa_3

Investment Securities - Summary of Available-for-Sale Debt Securities by Stated Maturity (Detail) $ in Thousands	Sep. 30, 2019USD ($)
Debt Securities, Available-for-sale [Line Items]
Due in one year or less, amortized cost	$ 0
Due after one years through five years, amortized cost	5,000
Due after five through ten years, amortized cost	277,662
Due after ten years, amortized cost	2,000
Total Debt Securities Amortized Cost	573,492
Due in one year or less, fair value	0
Due after one years through five years, fair value	5,238
Due after five through ten years, fair value	289,862
Due after ten years, fair value	2,098
Total Debt Securities Fair Value	606,619
Agency-guaranteed residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Agency-guaranteed residential mortgage-backed securities, amortized cost	288,830
Agency-guaranteed residential mortgage-backed securities, fair value	292,343
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election
Debt Securities, Available-for-sale [Line Items]
Agency-guaranteed residential mortgage-backed securities, amortized cost	0
Agency-guaranteed residential mortgage-backed securities, fair value	$ 17,078

Investment Securities - Gross U

Investment Securities - Gross Unrealized Losses and Fair Value, Aggregated by Investment Category (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	$ 615,410
Less Than 12 Months, Unrealized Losses	(30,300)
12 Months or More, Fair Value	0
12 Months or More, Unrealized Losses	0
Fair Value, Total	615,410
Unrealized Losses	(30,300)
Agency-guaranteed residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	305,374
Less Than 12 Months, Unrealized Losses	(5,893)
12 Months or More, Fair Value	0
12 Months or More, Unrealized Losses	0
Fair Value, Total	305,374
Unrealized Losses	(5,893)
Corporate notes
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	310,036
Less Than 12 Months, Unrealized Losses	(24,407)
12 Months or More, Fair Value	0
12 Months or More, Unrealized Losses	0
Fair Value, Total	310,036
Unrealized Losses	$ (24,407)

Loans Held for Sale - Compositi

Loans Held for Sale - Composition of Loans Held for Sale (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Receivables Held-for-sale [Abstract]
Multi-family loans, at lower of cost or fair value	$ 499,774	$ 499,774		$ 0
Total commercial loans held for sale	499,774	499,774		0
Home equity conversion mortgages, at lower of cost or fair value	1,325	1,325		0
Residential mortgage loans, at fair value	1,755	1,755		1,507
Total consumer loans held for sale	3,080	3,080		1,507
Loans held for sale	502,854	502,854		$ 1,507
Transfer of loan held for investment to held for sale	$ 499,800	$ 499,774	$ 0

Loans and Leases Receivable a_3

Loans and Leases Receivable and Allowance for Loan and Lease Losses - Schedule of Loans and Leases Receivable (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	$ 7,336,237		$ 7,138,074
Loans and lease receivable, gross	7,338,555		7,138,498
Deferred (fees) costs and unamortized (discounts) premiums, net	(2,318)		(424)
Allowance for loan and lease losses	(51,053)	$ (48,388)	(39,972)	$ (40,741)	$ (38,288)	$ (38,015)
Loans and leases receivable, net of allowance for loan and lease losses	9,723,714		8,503,522
Mortgage Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable	2,438,530		1,405,420
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	2,300,244		3,285,297
Allowance for loan and lease losses	(7,498)	(9,926)	(11,462)	(11,829)	(12,069)	(12,168)
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	61,200		56,491
Allowance for loan and lease losses	(658)	(649)	(624)	(1,062)	(992)	(979)
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	628,786		566,561
Allowance for loan and lease losses	(4,083)	(4,168)	(3,654)	(3,901)	(2,908)	(2,929)
Manufactured housing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	72,616		79,731
Allowance for loan and lease losses	(1,027)	(123)	(145)	(94)	(149)	(180)
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	643,553		74,035
Allowance for loan and lease losses	(12,582)	$ (10,267)	(2,529)	$ (1,540)	$ (226)	$ (172)
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	5,993,600		6,418,171
Commercial | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	2,300,244		3,285,297
Commercial | Commercial and industrial (including owner occupied commercial real estate)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	2,363,599		1,951,277
Commercial | Commercial real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	1,268,557		1,125,106
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	61,200		56,491
Commercial | Direct Finance Equipment Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	75,200		54,500
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	1,344,955		720,327
Consumer | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	628,786		566,561
Consumer | Manufactured housing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	72,616		79,731
Consumer | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	$ 643,553		$ 74,035

Loans and Leases Receivable a_4

Loans and Leases Receivable and Allowance for Loan and Lease Losses - Additional Information (Detail)	Dec. 31, 2018USD ($)Loan	Sep. 30, 2019USD ($)CommitmentLoan	Sep. 30, 2018USD ($)LoanAllowance	Sep. 30, 2019USD ($)CommitmentLoan	Sep. 30, 2018USD ($)LoanAllowance
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans held for sale, average life from purchase to sale				30 days
Loans reported as TDR	$ 19,200,000	$ 13,500,000		$ 13,500,000
Lease receivable, TDR	0	$ 0		$ 0
Minimum performance requirement				9 months
Number of loans | Loan		7	8	21	33
Recorded investment		$ 196,000	$ 473,000	$ 1,142,000	$ 1,458,000
Number of loans modified as TDR (loan) | Loan				4	0
Number of commitments to lend additional funds (commitment) | Commitment		0		0
Loans modified as TDR				$ 158,000	$ 0
Loans modified as TDR allowance, amount		$ 3,000		$ 6,000
Loans modified as TDR (loans) | Loan		4		9
Loans modified as TDR allowance (allowance) | Allowance			0		0
Loans and leases receivable, net of allowance for loan and lease losses	8,503,522,000	$ 9,723,714,000		$ 9,723,714,000
Loans pledged as collateral	5,400,000,000	5,200,000,000		5,200,000,000
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Residential real estate held in other real estate owned	200,000	200,000		200,000
Loans in process of foreclosure	$ 2,100,000	$ 800,000		$ 800,000
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified as TDR (loan) | Loan	1
Loans modified as TDR	$ 1,500,000
Forgiveness of debt
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | Loan		0	0	0	0

Loans and Leases Receivable a_5

Loans and Leases Receivable and Allowance for Loan and Lease Losses - Non-Covered Loans and Covered Loans by Class and Performance Status (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 16,599	$ 15,551
Non-Accrual	16,265	27,494
Current	7,287,302	7,073,879
Loans and lease receivable, gross	7,338,555	7,138,498
Loans and leases receivable, at amortized cost or lower of cost or market	$ 7,338,555	7,138,498
Delinquent period	30 days
Due days for loan payments	90 days
Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	$ 18,389	21,574
30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	14,656	13,363
90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,943	2,188
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,662	0
Non-Accrual	0	1,155
Current	2,294,926	3,282,452
Loans and lease receivable, gross	2,300,244	3,285,297
Multi-family | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	1,656	1,690
Multi-family | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,662	0
Multi-family | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	860	1,914
Non-Accrual	5,314	17,764
Current	1,881,586	1,353,586
Loans and lease receivable, gross	1,888,134	1,373,800
Commercial and industrial | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	374	536
Commercial and industrial | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	860	1,914
Commercial and industrial | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Commercial real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	686	193
Non-Accrual	2,068	1,037
Current	465,934	567,809
Loans and lease receivable, gross	475,465	577,477
Commercial real estate owner occupied | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	6,777	8,438
Commercial real estate owner occupied | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	686	193
Commercial real estate owner occupied | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Commercial real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	1,190
Non-Accrual	83	129
Current	1,264,361	1,119,443
Loans and lease receivable, gross	1,268,557	1,125,106
Commercial real estate non-owner occupied | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	4,113	4,344
Commercial real estate non-owner occupied | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	1,190
Commercial real estate non-owner occupied | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Non-Accrual	0	0
Current	61,200	56,491
Loans and lease receivable, gross	61,200	56,491
Construction | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	0	0
Construction | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Construction | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,485	5,940
Non-Accrual	6,093	5,605
Current	616,533	550,679
Loans and lease receivable, gross	628,786	566,561
Residential real estate | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	3,675	4,337
Residential real estate | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,485	5,940
Residential real estate | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Manufactured housing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	5,096	6,114
Non-Accrual	1,567	1,693
Current	64,362	69,916
Loans and lease receivable, gross	72,616	79,731
Cash	24	500
Manufactured housing | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	1,591	2,008
Manufactured housing | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,153	3,926
Manufactured housing | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,943	2,188
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,810	200
Non-Accrual	1,140	111
Current	638,400	73,503
Loans and lease receivable, gross	643,553	74,035
Other consumer | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and lease receivable, gross	203	221
Other consumer | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,810	200
Other consumer | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 0	$ 0

Loans and Leases Receivable a_6

Loans and Leases Receivable and Allowance for Loan and Lease Losses - Schedule of Allowance for Loan and Lease Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Dec. 31, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 48,388	$ 38,288	$ 39,972	$ 38,015
Charge-offs	(2,200)	(527)	(4,794)	(2,377)
Recoveries	439	56	1,336	846
Provision for loan and lease losses	4,426	2,924	14,539	4,257
Ending balance	51,053	40,741	51,053	40,741
Loans:
Individually evaluated for impairment					$ 27,668	$ 39,118
Collectively evaluated for impairment					7,292,498	7,077,806
Loans and leases receivable, gross					7,338,555	7,138,498
Loans receivable, at amortized cost or lower of cost or market					7,338,555	7,138,498
Allowance for loan losses:
Individually evaluated for impairment					395	845
Collectively evaluated for impairment					48,034	36,249
Total Allowance for loan losses	51,053	38,288	51,053	40,741	51,053	39,972
Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					18,389	21,574
Loans and leases receivable, gross					18,389	21,574
Allowance for loan losses:
Loans acquired with credit deterioration					2,624	2,878
Multi-family
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	9,926	12,069	11,462	12,168
Charge-offs	0	0	(541)	0
Recoveries	0	0	7	0
Provision for loan and lease losses	(2,428)	(240)	(3,430)	(339)
Ending balance	7,498	11,829	7,498	11,829
Loans:
Individually evaluated for impairment					0	1,155
Collectively evaluated for impairment					2,298,588	3,282,452
Loans and leases receivable, gross					2,300,244	3,285,297
Allowance for loan losses:
Individually evaluated for impairment					0	539
Collectively evaluated for impairment					7,498	10,923
Total Allowance for loan losses	9,926	12,069	11,462	11,829	7,498	11,462
Multi-family | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					1,656	1,690
Loans and leases receivable, gross					1,656	1,690
Allowance for loan losses:
Loans acquired with credit deterioration					0	0
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	13,736	12,258	12,145	10,918
Charge-offs	(349)	(90)	(532)	(314)
Recoveries	369	30	826	205
Provision for loan and lease losses	2,119	516	3,436	1,905
Ending balance	15,875	12,714	15,875	12,714
Loans:
Individually evaluated for impairment					5,375	17,828
Collectively evaluated for impairment					1,882,385	1,355,436
Loans and leases receivable, gross					1,888,134	1,373,800
Allowance for loan losses:
Individually evaluated for impairment					167	261
Collectively evaluated for impairment					15,448	11,516
Total Allowance for loan losses	13,736	12,258	15,875	12,714	15,875	12,145
Commercial and industrial | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					374	536
Loans and leases receivable, gross					374	536
Allowance for loan losses:
Loans acquired with credit deterioration					260	368
Commercial real estate owner occupied
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,360	2,988	3,320	3,232
Charge-offs	(45)	0	(119)	(501)
Recoveries	10	0	235	326
Provision for loan and lease losses	(435)	164	(546)	95
Ending balance	2,890	3,152	2,890	3,152
Loans:
Individually evaluated for impairment					2,084	1,069
Collectively evaluated for impairment					466,604	567,970
Loans and leases receivable, gross					475,465	577,477
Allowance for loan losses:
Individually evaluated for impairment					0	1
Collectively evaluated for impairment					2,882	3,319
Total Allowance for loan losses	3,360	2,988	2,890	3,152	2,890	3,320
Commercial real estate owner occupied | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					6,777	8,438
Loans and leases receivable, gross					6,777	8,438
Allowance for loan losses:
Loans acquired with credit deterioration					8	0
Commercial real estate non-owner occupied
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,159	6,698	6,093	7,437
Charge-offs	0	0	0	0
Recoveries	0	5	0	5
Provision for loan and lease losses	281	(254)	347	(993)
Ending balance	6,440	6,449	6,440	6,449
Loans:
Individually evaluated for impairment					83	129
Collectively evaluated for impairment					1,264,361	1,120,633
Loans and leases receivable, gross					1,268,557	1,125,106
Allowance for loan losses:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					4,555	4,161
Total Allowance for loan losses	6,159	6,698	6,440	6,449	6,440	6,093
Commercial real estate non-owner occupied | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					4,113	4,344
Loans and leases receivable, gross					4,113	4,344
Allowance for loan losses:
Loans acquired with credit deterioration					1,885	1,932
Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	649	992	624	979
Charge-offs	0	0	0	0
Recoveries	8	11	128	231
Provision for loan and lease losses	1	59	(94)	(148)
Ending balance	658	1,062	658	1,062
Loans:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					61,200	56,491
Loans and leases receivable, gross					61,200	56,491
Allowance for loan losses:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					658	624
Total Allowance for loan losses	649	992	624	1,062	658	624
Construction | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					0	0
Loans and leases receivable, gross					0	0
Allowance for loan losses:
Loans acquired with credit deterioration					0	0
Residential real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,168	2,908	3,654	2,929
Charge-offs	0	0	(109)	(407)
Recoveries	5	6	20	69
Provision for loan and lease losses	(90)	987	518	1,310
Ending balance	4,083	3,901	4,083	3,901
Loans:
Individually evaluated for impairment					9,057	8,631
Collectively evaluated for impairment					616,054	553,593
Loans and leases receivable, gross					628,786	566,561
Allowance for loan losses:
Individually evaluated for impairment					40	41
Collectively evaluated for impairment					3,727	3,227
Total Allowance for loan losses	4,168	2,908	3,654	2,929	4,083	3,654
Residential real estate | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					3,675	4,337
Loans and leases receivable, gross					3,675	4,337
Allowance for loan losses:
Loans acquired with credit deterioration					316	386
Manufactured housing
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	123	149	145	180
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan and lease losses	904	(55)	882	(86)
Ending balance	1,027	94	1,027	94
Loans:
Individually evaluated for impairment					9,929	10,195
Collectively evaluated for impairment					61,096	67,528
Loans and leases receivable, gross					72,616	79,731
Allowance for loan losses:
Individually evaluated for impairment					123	3
Collectively evaluated for impairment					904	89
Total Allowance for loan losses	123	149	145	94	1,027	145
Manufactured housing | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					1,591	2,008
Loans and leases receivable, gross					1,591	2,008
Allowance for loan losses:
Loans acquired with credit deterioration					0	53
Other consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	10,267	226	2,529	172
Charge-offs	(1,806)	(437)	(3,493)	(1,155)
Recoveries	47	4	120	10
Provision for loan and lease losses	4,074	1,747	13,426	2,513
Ending balance	12,582	1,540	12,582	1,540
Loans:
Individually evaluated for impairment					1,140	111
Collectively evaluated for impairment					642,210	73,703
Loans and leases receivable, gross					643,553	74,035
Allowance for loan losses:
Individually evaluated for impairment					65	0
Collectively evaluated for impairment					12,362	2,390
Total Allowance for loan losses	$ 10,267	$ 226	$ 2,529	$ 172	12,582	2,529
Other consumer | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					203	221
Loans and leases receivable, gross					203	221
Allowance for loan losses:
Loans acquired with credit deterioration					$ 155	$ 139

Loans and Leases Receivable a_7

Loans and Leases Receivable and Allowance for Loan and Lease Losses - Summary of Recorded Investment Net Charge-Offs, Unpaid Principal Balance and Related Allowance for Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Recorded investment net of charge-offs
Recorded Investment Net of Charge Offs, Total	$ 27,668		$ 27,668		$ 39,118
Unpaid principal balance
Unpaid Principal Balance, Total	30,524		30,524		42,031
Related Allowance	395		395		845
Average recorded investment
Average Recorded Investment, Total	28,955	$ 36,445	34,097	$ 36,446
Interest income recognized
Interest Income Recognized, Total	1,507	435	2,009	815
Multi-family
Recorded investment net of charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	0		0		0
Recorded Investment Net of Charge Offs, With an allowance recorded	0		0		1,155
Unpaid principal balance
Unpaid Principal Balance, With no related allowance recorded	0		0		0
Unpaid Principal Balance, With an allowance recorded	0		0		1,155
Related Allowance	0		0		539
Average recorded investment
Average Recorded Investment, With no related allowance recorded	0	1,343	499	672
Average Recorded Investment, With an allowance recorded	0	0	289	0
Interest income recognized
Interest Income Recognized, With no related allowance recorded	149	0	149	8
Interest Income Recognized, With an allowance recorded	0	0	0	0
Commercial and industrial
Recorded investment net of charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	4,602		4,602		13,660
Recorded Investment Net of Charge Offs, With an allowance recorded	773		773		4,168
Unpaid principal balance
Unpaid Principal Balance, With no related allowance recorded	6,245		6,245		15,263
Unpaid Principal Balance, With an allowance recorded	773		773		4,351
Related Allowance	167		167		261
Average recorded investment
Average Recorded Investment, With no related allowance recorded	4,631	7,765	8,528	7,623
Average Recorded Investment, With an allowance recorded	3,358	5,787	4,277	7,089
Interest income recognized
Interest Income Recognized, With no related allowance recorded	991	166	1,009	168
Interest Income Recognized, With an allowance recorded	0	27	97	39
Commercial real estate owner occupied
Recorded investment net of charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	2,068		2,068		1,037
Recorded Investment Net of Charge Offs, With an allowance recorded	16		16		32
Unpaid principal balance
Unpaid Principal Balance, With no related allowance recorded	2,849		2,849		1,766
Unpaid Principal Balance, With an allowance recorded	16		16		32
Related Allowance	0		0		1
Average recorded investment
Average Recorded Investment, With no related allowance recorded	1,425	711	1,111	711
Average Recorded Investment, With an allowance recorded	91	336	131	546
Interest income recognized
Interest Income Recognized, With no related allowance recorded	74	0	95	0
Interest Income Recognized, With an allowance recorded	0	9	1	11
Commercial real estate non-owner occupied
Recorded investment net of charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	83		83		129
Unpaid principal balance
Unpaid Principal Balance, With no related allowance recorded	194		194		241
Average recorded investment
Average Recorded Investment, With no related allowance recorded	89	1,347	102	774
Interest income recognized
Interest Income Recognized, With no related allowance recorded	7	0	7	8
Residential real estate
Recorded investment net of charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	4,686		4,686		4,842
Recorded Investment Net of Charge Offs, With an allowance recorded	4,371		4,371		3,789
Unpaid principal balance
Unpaid Principal Balance, With no related allowance recorded	5,007		5,007		5,128
Unpaid Principal Balance, With an allowance recorded	4,371		4,371		3,789
Related Allowance	40		40		41
Average recorded investment
Average Recorded Investment, With no related allowance recorded	4,526	4,281	4,654	3,952
Average Recorded Investment, With an allowance recorded	4,057	4,398	3,937	4,760
Interest income recognized
Interest Income Recognized, With no related allowance recorded	21	23	82	25
Interest Income Recognized, With an allowance recorded	47	61	101	124
Manufactured housing
Recorded investment net of charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	4,496		4,496		10,027
Recorded Investment Net of Charge Offs, With an allowance recorded	5,433		5,433		168
Unpaid principal balance
Unpaid Principal Balance, With no related allowance recorded	4,496		4,496		10,027
Unpaid Principal Balance, With an allowance recorded	5,433		5,433		168
Related Allowance	123		123		3
Average recorded investment
Average Recorded Investment, With no related allowance recorded	7,229	10,147	8,656	10,011
Average Recorded Investment, With an allowance recorded	2,799	227	1,483	225
Interest income recognized
Interest Income Recognized, With no related allowance recorded	97	144	335	421
Interest Income Recognized, With an allowance recorded	45	4	49	10
Other consumer
Recorded investment net of charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	195		195		111
Recorded Investment Net of Charge Offs, With an allowance recorded	945		945
Unpaid principal balance
Unpaid Principal Balance, With no related allowance recorded	195		195		$ 111
Unpaid Principal Balance, With an allowance recorded	945		945
Related Allowance	65		65
Average recorded investment
Average Recorded Investment, With no related allowance recorded	164	103	137	83
Average Recorded Investment, With an allowance recorded	586		293
Interest income recognized
Interest Income Recognized, With no related allowance recorded	76	$ 1	84	$ 1
Interest Income Recognized, With an allowance recorded	$ 0		$ 0

Loans and Leases Receivable a_8

Loans and Leases Receivable and Allowance for Loan and Lease Losses - Schedule of Accruing and Nonaccrual TDRs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 196	$ 473	$ 1,142	$ 1,458
Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded investment	0	0	431	0
Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded investment	0	152	83	352
Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded investment	196	321	628	1,093
Other consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 0	$ 0	0	$ 13
Accruing TDRs
Financing Receivable, Impaired [Line Items]
Recorded investment			11,403		$ 11,624
Accruing TDRs | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded investment			61		64
Accruing TDRs | Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Recorded investment			16		32
Accruing TDRs | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded investment			2,964		3,026
Accruing TDRs | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded investment			8,362		8,502
Accruing TDRs | Other consumer
Financing Receivable, Impaired [Line Items]
Recorded investment			0		0
Nonaccrual TDRs
Financing Receivable, Impaired [Line Items]
Recorded investment			2,103		7,572
Nonaccrual TDRs | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded investment			29		5,273
Nonaccrual TDRs | Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Recorded investment			0		0
Nonaccrual TDRs | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded investment			639		667
Nonaccrual TDRs | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded investment			1,424		1,620
Nonaccrual TDRs | Other consumer
Financing Receivable, Impaired [Line Items]
Recorded investment			11		12
Total
Financing Receivable, Impaired [Line Items]
Recorded investment			13,506		19,196
Total | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded investment			90		5,337
Total | Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Recorded investment			16		32
Total | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded investment			3,603		3,693
Total | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded investment			9,786		10,122
Total | Other consumer
Financing Receivable, Impaired [Line Items]
Recorded investment			$ 11		$ 12

Loans and Leases Receivable a_9

Loans and Leases Receivable and Allowance for Loan and Lease Losses - Analysis of Loans Modified in Troubled Debt Restructuring by Type of Concession (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)Loan	Sep. 30, 2018USD ($)Loan	Sep. 30, 2019USD ($)Loan	Sep. 30, 2018USD ($)Loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | Loan	7	8	21	33
Recorded investment | $	$ 196	$ 473	$ 1,142	$ 1,458
Extensions of maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | Loan	0	0	2	1
Recorded investment | $	$ 0	$ 0	$ 514	$ 56
Interest-rate reductions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | Loan	7	8	19	32
Recorded investment | $	$ 196	$ 473	$ 628	$ 1,402

Loans and Leases Receivable _10

Loans and Leases Receivable and Allowance for Loan and Lease Losses - Summary of Loans Modified in Troubled Debt Restructurings and Related Recorded Investment (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)Loan	Sep. 30, 2018USD ($)Loan	Sep. 30, 2019USD ($)Loan	Sep. 30, 2018USD ($)Loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | Loan	7	8	21	33
Recorded investment | $	$ 196	$ 473	$ 1,142	$ 1,458
Number of loans | Loan			4	0
Recorded Investment | $			$ 158	$ 0
Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | Loan	0	0	1	0
Recorded investment | $	$ 0	$ 0	$ 431	$ 0
Manufactured housing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | Loan	7	7	19	30
Recorded investment | $	$ 196	$ 321	$ 628	$ 1,093
Number of loans | Loan			3	0
Recorded Investment | $			$ 76	$ 0
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | Loan	0	1	1	2
Recorded investment | $	$ 0	$ 152	$ 83	$ 352
Number of loans | Loan			1	0
Recorded Investment | $			$ 82	$ 0
Other consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | Loan	0	0	0	1
Recorded investment | $	$ 0	$ 0	$ 0	$ 13

Loans and Leases Receivable _11

Loans and Leases Receivable and Allowance for Loan and Lease Losses - Changes in Accretable Yield Related to Purchased-credit-impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Changes in Accretable Yield
Accretable yield balance, beginning of period	$ 5,807	$ 7,403	$ 6,178	$ 7,825
Accretion to interest income	(256)	(310)	(911)	(1,164)
Reclassification from nonaccretable difference and disposals, net	(67)	(4)	217	428
Accretable yield balance, end of period	$ 5,484	$ 7,089	$ 5,484	$ 7,089

Loans and Leases Receivable _12

Loans and Leases Receivable and Allowance for Loan and Lease Losses - Credit Ratings of Covered and Non-Covered Loan Portfolio (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	$ 7,338,555	$ 7,138,498
Pass/Satisfactory
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	5,817,636	6,181,911
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	68,878	126,180
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	107,086	110,080
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	1,324,764	700,664
Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	20,191	19,663
Multi-family
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	2,300,244	3,285,297
Multi-family | Pass/Satisfactory
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	2,259,366	3,201,822
Multi-family | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	21,449	55,696
Multi-family | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	19,429	27,779
Multi-family | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Multi-family | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	1,888,134	1,373,800
Commercial and industrial | Pass/Satisfactory
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	1,836,857	1,306,466
Commercial and industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	27,454	30,551
Commercial and industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	23,823	36,783
Commercial and industrial | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Commercial and industrial | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Commercial real estate owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	475,465	577,477
Commercial real estate owner occupied | Pass/Satisfactory
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	459,549	562,639
Commercial real estate owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	8,342	9,730
Commercial real estate owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	7,574	5,108
Commercial real estate owner occupied | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Commercial real estate owner occupied | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Commercial real estate non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	1,268,557	1,125,106
Commercial real estate non-owner occupied | Pass/Satisfactory
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	1,200,664	1,054,493
Commercial real estate non-owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	11,633	30,203
Commercial real estate non-owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	56,260	40,410
Commercial real estate non-owner occupied | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Commercial real estate non-owner occupied | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	61,200	56,491
Construction | Pass/Satisfactory
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	61,200	56,491
Construction | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Construction | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Construction | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Construction | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	628,786	566,561
Residential real estate | Pass/Satisfactory
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Residential real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Residential real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Residential real estate | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	620,208	555,016
Residential real estate | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	8,578	11,545
Manufactured housing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	72,616	79,731
Manufactured housing | Pass/Satisfactory
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Manufactured housing | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Manufactured housing | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Manufactured housing | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	65,953	71,924
Manufactured housing | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	6,663	7,807
Other consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	643,553	74,035
Other consumer | Pass/Satisfactory
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Other consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Other consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	0	0
Other consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	638,603	73,724
Other consumer | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and lease receivable, gross	$ 4,950	$ 311

Loans and Leases Receivable _13

Loans and Leases Receivable and Allowance for Loan and Lease Losses - Schedule of Loan Purchases and Sales (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan purchases	$ 83,898,000	$ 72,650,000	$ 640,008,000	$ 350,024,000
Value at the time of sale of loans	$ 0	$ (12,078,000)	$ 0	$ (38,808,000)
Purchase price as a percentage of loans outstanding	96.30%	95.30%	99.40%	99.30%
Gain/Loss on Sale of Loans	$ 0	$ 1,096,000	$ 0	$ 3,404,000
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan purchases	0	25,807,000	105,858,000	303,181,000
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan purchases	83,898,000	46,843,000	534,150,000	46,843,000
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Value at the time of sale of loans	0	(6,691,000)	0	(23,840,000)
Commercial real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Value at the time of sale of loans	$ 0	$ (5,387,000)	$ 0	$ (14,968,000)

Leases - Lessee Narrative (Deta

Leases - Lessee Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Lessee, operating lease, renewal term	15 years		15 years
Operating lease right-of-use-assets, net	$ 20,826		$ 20,826
Operating lease liabilities	22,002		22,002
Lessee, operating lease, lease not yet commenced, commitment amount	2,700		2,700
Operating cash flows from operating leases	$ 1,400		$ 4,200
Operating leases, rent expense		$ 1,400		$ 4,300
Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, remaining lease term			2 months
Lessee, operating lease, term	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, remaining lease term			8 years
Lessee, operating lease, term	5 years		5 years
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Operating lease right-of-use-assets, net					$ 23,800
Accrued rent					1,100
Operating lease liabilities					$ 24,900

Leases - Right-of-Use Assets an

Leases - Right-of-Use Assets and Lease Liabilities (Details) $ in Thousands	Sep. 30, 2019USD ($)
ASSETS
Operating lease ROU assets	$ 20,826
LIABILITIES
Operating lease liabilities	$ 22,002

Leases - Lease, Cost (Details)

Leases - Lease, Cost (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 1,470,000	$ 4,400,000
Variable lease cost	$ 0	$ 0

Leases - Maturities of Non-canc

Leases - Maturities of Non-cancelable Lease Liabilities (Details) $ in Thousands	Sep. 30, 2019USD ($)
Leases [Abstract]
2019	$ 1,472
2020	5,504
2021	4,708
2022	4,079
2023	3,121
Thereafter	4,918
Total minimum payments	23,802
Less: interest	1,800
Present value of lease liabilities	$ 22,002

Leases - Summary of Lease Term

Leases - Summary of Lease Term and Discount Rate (Details)	Sep. 30, 2019
Leases [Abstract]
Operating lease, weighted average remaining lease term (years)	5 years 2 months 12 days
Operating lease, weighted average discount rate, percent	2.92%

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Rental Commitments (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 5,577
2020	5,135
2021	4,513
2022	3,885
2023	2,856
Thereafter	4,699
Total minimum payments	$ 26,665

Leases - Lessor Narrative (Deta

Leases - Lessor Narrative (Details) - Equipment	9 Months Ended
	Sep. 30, 2019
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) $ in Thousands	Sep. 30, 2019USD ($)
Leases [Abstract]
Lease receivables	$ 75,785
Guaranteed residual assets	5,673
Unguaranteed residual assets	1,260
Deferred initial direct costs	667
Unearned income	(7,556)
Net investment in direct financing leases	75,829
Investment in operating leases	86,539
Accumulated depreciation	(11,413)
Deferred initial direct costs	952
Net investment in operating leases	76,078
Total lease assets	$ 151,907

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, 2019	Jan. 01, 2019	Dec. 31, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital (to risk weighted assets), Actual Amount	$ 794,745		$ 745,795
Tier 1 capital (to risk weighted assets), Actual Amount	1,012,216		963,266
Total capital (to risk weighted assets), Actual Amount	1,155,499		1,081,962
Tier 1 capital (to average assets), Actual Amount	$ 1,012,216		$ 963,266
Common equity Tier 1 (to risk weighted assets), Actual Ratio	7.811%		8.964%
Tier 1 capital (to risk weighted assets), Actual Ratio	9.949%		11.578%
Total capital (to risk weighted assets), Actual Ratio	11.357%		13.005%
Tier 1 capital (to average assets), Actual Ratio	9.013%		9.665%
Common equity Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Amount	$ 457,840		$ 374,388
Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Amount	610,453		499,185
Total capital (to risk weighted assets), For Capital Adequacy Purposes Amount	813,938		665,580
Tier 1 capital (to average assets), For Capital Adequacy Purposes Amount	$ 449,217		$ 398,668
Common equity Tier 1 (to risk weighted assets), For Capital Adequacy Purposes Ratio	4.50%	7.00%	4.50%
Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Ratio	6.00%	8.50%	6.00%
Total capital (to risk weighted assets), For Capital Adequacy Purposes Ratio	8.00%	10.50%	8.00%
Tier 1 capital (to average assets), For Capital Adequacy Purposes Ratio	4.00%		4.00%
Common equity Tier 1 (to risk weighted assets), for Basel III amount	$ 712,195		$ 530,384
Tier 1 (to risk weighted assets) Required for Basel III amount	864,809		655,180
Total capital (to risk weighted assets), for Basel III amount	1,068,293		821,575
Tier 1 (to risk average assets), for Basel III amount	$ 449,217		$ 398,668
Common equity Tier 1 (to risk weighted assets), for Basel III ratio	7.00%		6.375%
Tier 1 capital (to risk weighted assets), for Basel III ratio	8.50%		7.875%
Total capital (to risk weighted assets), for Basel III ratio	10.50%		9.875%
Tier 1 capital (to average assets), for Basel III ratio	4.00%		4.00%
Customers Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital (to risk weighted assets), Actual Amount	$ 1,103,341		$ 1,066,121
Tier 1 capital (to risk weighted assets), Actual Amount	1,103,341		1,066,121
Total capital (to risk weighted assets), Actual Amount	1,263,490		1,215,522
Tier 1 capital (to average assets), Actual Amount	$ 1,103,341		$ 1,066,121
Common equity Tier 1 (to risk weighted assets), Actual Ratio	10.847%		12.822%
Tier 1 capital (to risk weighted assets), Actual Ratio	10.847%		12.822%
Total capital (to risk weighted assets), Actual Ratio	12.421%		14.619%
Tier 1 capital (to average assets), Actual Ratio	9.829%		10.699%
Common equity Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Amount	$ 457,748		$ 374,160
Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Amount	610,331		498,879
Total capital (to risk weighted assets), For Capital Adequacy Purposes Amount	813,775		665,173
Tier 1 capital (to average assets), For Capital Adequacy Purposes Amount	$ 448,997		$ 398,570
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	6.00%		6.00%
Total capital (to risk weighted assets), For Capital Adequacy Purposes Ratio	8.00%		8.00%
Tier 1 capital (to average assets), For Capital Adequacy Purposes Ratio	4.00%		4.00%
Common equity Tier 1 Capital (to risk weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 661,192		$ 540,453
Tier 1 capital (to risk weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	813,775		665,173
Total capital (to risk weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	1,017,218		831,466
Tier 1 capital (to average assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 561,246		$ 498,212
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	8.00%		8.00%
Total capital (to risk weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	10.00%		10.00%
Tier 1 capital (to average assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	5.00%		5.00%
Common equity Tier 1 (to risk weighted assets), for Basel III amount	$ 712,053		$ 530,059
Tier 1 (to risk weighted assets) Required for Basel III amount	864,636		654,779
Total capital (to risk weighted assets), for Basel III amount	1,068,079		821,072
Tier 1 (to risk average assets), for Basel III amount	$ 448,997		$ 398,570
Common equity Tier 1 (to risk weighted assets), for Basel III ratio	7.00%		6.375%
Tier 1 capital (to risk weighted assets), for Basel III ratio	8.50%		7.875%
Total capital (to risk weighted assets), for Basel III ratio	10.50%		9.875%
Tier 1 capital (to average assets), for Basel III ratio	4.00%		4.00%

Regulatory Capital - Narrative

Regulatory Capital - Narrative (Details)	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018	Jan. 01, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer, excess of minimum capital ratio				2.50%
Capital conservation buffer to risk weighted assets, year one	0.625%
Capital conservation buffer to risk weighted assets, year two	1.25%
Capital conservation buffer to risk weighted assets, year three	1.875%
Capital conservation buffer to risk weighted assets, year four and thereafter	2.50%
Common equity Tier 1 (to risk weighted assets), for capital adequacy purposes ratio	4.50%	7.00%	4.50%
Tier 1 capital (to risk weighted assets), for capital adequacy purposes ratio	6.00%	8.50%	6.00%
Total capital (to risk weighted assets), for capital adequacy purposes ratio	8.00%	10.50%	8.00%
Customers Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
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	6.00%		6.00%
Total capital (to risk weighted assets), for capital adequacy purposes ratio	8.00%		8.00%

Disclosures About Fair Value _3

Disclosures About Fair Value of Financial Instruments - Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Jun. 30, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale, average life from purchase to sale		30 days
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities	$ 17,078	$ 17,078	$ 17,200
Significant Unobservable Inputs (Level 3) | Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Increase in fair value	600	600
Settlements	$ 700	$ 700

Disclosures About Fair Value _4

Disclosures About Fair Value of Financial Instruments - Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Carrying Amount	$ 182,218	$ 62,135
Cash and cash equivalents, Estimated Fair Value	182,218	62,135
Debt securities, available for sale	589,541	663,294
Debt securities, available for sale, Estimated Fair Value	589,541	663,294
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election, Carrying Amount	17,078
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election, Estimated Fair Value	17,078
Equity securities, Carrying Amount	2,095	1,718
Equity securities, Estimated Fair Value	2,095	1,718
Loans held for sale, Carrying Amount	502,854	1,507
Loans held for sale, Estimated Fair Value	502,854	1,507
Loans and leases receivable, net of allowance for loan and lease losses, Carrying Amount	9,723,714	8,503,522
Loans and leases receivable, net of allowance for loan losses, Estimated Fair Value	9,991,132	8,481,128
FHLB, Federal Reserve Bank and other restricted stock, Carrying Amount	81,853	89,685
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value	81,853	89,685
Derivative assets	29,174	14,693
Deposits, Carrying Amount	8,925,685	7,142,236
Deposits, Estimated Fair Value	8,929,025	7,136,009
Federal funds purchased, Carrying Amount	373,000	187,000
Federal funds purchased, Estimated Fair Value	373,000	187,000
FHLB advances, Carrying Amount	1,040,800	1,248,070
FHLB advances, Estimated Fair Value	1,042,813	1,248,046
Other borrowings, Carrying Amount	123,528	123,871
Other borrowings, Estimated Fair Value	124,961	121,718
Subordinated debt, Carrying Amount	109,050	108,977
Subordinated debt, Estimated Fair Value	114,686	110,550
Derivative liabilities	58,316	16,286
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Estimated Fair Value	182,218	62,135
Debt securities, available for sale, Estimated Fair Value	0	0
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election, Estimated Fair Value	0
Equity securities, Estimated Fair Value	2,095	1,718
Loans held for sale, Estimated Fair Value	0	0
Loans and leases receivable, net of allowance for loan losses, Estimated Fair Value	0	0
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value	0	0
Derivative assets	0	0
Deposits, Estimated Fair Value	6,502,812	5,408,055
Federal funds purchased, Estimated Fair Value	373,000	187,000
FHLB advances, Estimated Fair Value	190,800	998,070
Other borrowings, Estimated Fair Value	0	0
Subordinated debt, Estimated Fair Value	0	0
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Estimated Fair Value	0	0
Debt securities, available for sale, Estimated Fair Value	589,541	663,294
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election, Estimated Fair Value	0
Equity securities, Estimated Fair Value	0	0
Loans held for sale, Estimated Fair Value	1,755	1,507
Loans and leases receivable, net of allowance for loan losses, Estimated Fair Value	2,438,530	1,405,420
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value	81,853	89,685
Derivative assets	29,024	14,624
Deposits, Estimated Fair Value	2,426,213	1,727,954
Federal funds purchased, Estimated Fair Value	0	0
FHLB advances, Estimated Fair Value	852,013	249,976
Other borrowings, Estimated Fair Value	124,961	121,718
Subordinated debt, Estimated Fair Value	114,686	110,550
Derivative liabilities	58,316	16,286
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Estimated Fair Value	0	0
Debt securities, available for sale, Estimated Fair Value	0	0
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election, Estimated Fair Value	17,078
Equity securities, Estimated Fair Value	0	0
Loans held for sale, Estimated Fair Value	501,099	0
Loans and leases receivable, net of allowance for loan losses, Estimated Fair Value	7,552,602	7,075,708
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value	0	0
Derivative assets	150	69
Deposits, Estimated Fair Value	0	0
Federal funds purchased, 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, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Related Allowance	$ 395	$ 845
Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	3,078,173	2,086,632
Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	12,832	11,497
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	17,078
Equity securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	2,095
Derivative assets | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	29,174	14,693
Loans held for sale - fair value option | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	1,755	1,507
Loans receivable, mortgage warehouse – fair value option | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	2,438,530	1,405,420
Derivative liabilities | Fair Value, Measurements, Recurring
Liabilities
Financial Liabilities Fair Value Disclosure	58,316	16,286
Impaired loans, net of specific reserves
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Related Allowance	395
Impaired loans, net of specific reserves | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	12,754	10,876
Other real estate owned | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	78	621
Available-for-sale Securities | Agency-guaranteed residential mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	292,343	305,374
Available-for-sale Securities | Corporate notes | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	297,198	357,920
Available-for-sale Securities | Equity securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure		1,718
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	2,095	1,718
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	2,095
Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivative assets | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	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 Disclosure	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 Disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivative liabilities | Fair Value, Measurements, Recurring
Liabilities
Financial Liabilities Fair Value Disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Impaired loans, net of specific reserves | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other real estate owned | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Available-for-sale Securities | Agency-guaranteed residential mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Available-for-sale Securities | Corporate notes | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Available-for-sale Securities | Equity securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure		1,718
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	3,058,850	2,084,845
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	0	0
Significant Other Observable Inputs (Level 2) | Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	0
Significant Other Observable Inputs (Level 2) | Equity securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	0
Significant Other Observable Inputs (Level 2) | Derivative assets | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	29,024	14,624
Significant Other Observable Inputs (Level 2) | Loans held for sale - fair value option | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	1,755	1,507
Significant Other Observable Inputs (Level 2) | Loans receivable, mortgage warehouse – fair value option | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	2,438,530	1,405,420
Significant Other Observable Inputs (Level 2) | Derivative liabilities | Fair Value, Measurements, Recurring
Liabilities
Financial Liabilities Fair Value Disclosure	58,316	16,286
Significant Other Observable Inputs (Level 2) | Impaired loans, net of specific reserves | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	0	0
Significant Other Observable Inputs (Level 2) | Other real estate owned | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	0	0
Significant Other Observable Inputs (Level 2) | Available-for-sale Securities | Agency-guaranteed residential mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	292,343	305,374
Significant Other Observable Inputs (Level 2) | Available-for-sale Securities | Corporate notes | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	297,198	357,920
Significant Other Observable Inputs (Level 2) | Available-for-sale Securities | Equity securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure		0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	17,228	69
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	12,832	11,497
Significant Unobservable Inputs (Level 3) | Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	17,078
Significant Unobservable Inputs (Level 3) | Equity securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	0
Significant Unobservable Inputs (Level 3) | Derivative assets | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	150	69
Significant Unobservable Inputs (Level 3) | Loans held for sale - fair value option | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	0	0
Significant Unobservable Inputs (Level 3) | Loans receivable, mortgage warehouse – fair value option | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	0	0
Significant Unobservable Inputs (Level 3) | Derivative liabilities | Fair Value, Measurements, Recurring
Liabilities
Financial Liabilities Fair Value Disclosure	0	0
Significant Unobservable Inputs (Level 3) | Impaired loans, net of specific reserves | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	12,754	10,876
Significant Unobservable Inputs (Level 3) | Other real estate owned | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	78	621
Significant Unobservable Inputs (Level 3) | Available-for-sale Securities | Agency-guaranteed residential mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	0	0
Significant Unobservable Inputs (Level 3) | Available-for-sale Securities | Corporate notes | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	$ 0	0
Significant Unobservable Inputs (Level 3) | Available-for-sale Securities | Equity securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure		$ 0

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) - Residential Mortgage Loan Commitments - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 145	$ 133	$ 69	$ 60
Issuances	150	122	372	338
Settlements	(145)	(133)	(291)	(276)
Balance at end of period	$ 150	$ 122	$ 150	$ 122

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) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 204		$ 816
Impaired loans, net of specific reserves | Collateral appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	8.00%		8.00%
Impaired loans, net of specific reserves | Business asset valuation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	15.00%		26.00%
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities	$ 17,078	$ 17,200
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	12.00%
Other real estate owned | Collateral appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	9.00%		8.00%
Residential mortgage loan commitments | Adjusted market bid
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loan commitments pull through rate	83.00%		90.00%
Fair Value Estimate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loan commitments	$ 150		$ 69
Fair Value Estimate | Collateral appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	11,207		10,260
Other real estate owned	78		621
Fair Value Estimate | Business asset valuation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	1,547		$ 616
Fair Value Estimate | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities	$ 17,078
Minimum | Impaired loans, net of specific reserves | Collateral appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	8.00%		8.00%
Minimum | Impaired loans, net of specific reserves | Business asset valuation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	8.00%		8.00%
Minimum | Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	9.00%
Minimum | Other real estate owned | Collateral appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	8.00%		8.00%
Minimum | Residential mortgage loan commitments | Adjusted market bid
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loan commitments pull through rate	83.00%		90.00%
Maximum | Impaired loans, net of specific reserves | Collateral appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	8.00%		8.00%
Maximum | Impaired loans, net of specific reserves | Business asset valuation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	20.00%		50.00%
Maximum | Interest-only classes of agency-guaranteed home equity conversion mortgage-backed securities, reported at fair value based on a fair value option election | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	14.00%
Maximum | Other real estate owned | Collateral appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	9.00%		8.00%
Maximum | Residential mortgage loan commitments | Adjusted market bid
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loan commitments pull through rate	83.00%		90.00%

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Additional Information (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)swapderivative	Dec. 31, 2018USD ($)derivativeswap
Derivative Instruments, Gain (Loss) [Line Items]
Losses expected to be reclassified from AOCI during the next 12 months	$ 5,800
Length of hedging exposure to variability in future cash flows (months)	57 months
Derivative, net liability position, aggregate fair value	$ 58,400
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	$ 7,600	$ 3,600
Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gross amounts not offset in the consolidated balance sheet, Cash collateral pledged	$ 57,832	$ 702
Interest Rate Swaps | Derivative Designated as Cash Flow Hedges | Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Number of outstanding interest rate derivatives (derivative) | derivative	4	6
Aggregate notional amount	$ 725,000	$ 750,000
Interest Rate Swaps | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 1,200,000	$ 1,000,000
Number of interest rate swaps (swap) | swap	124	98
Credit Contract | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 114,900	$ 94,900

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Fair Value of Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets, Fair Value	$ 131	$ 7,529
Derivative Liabilities, Fair Value	58,056	9,077
Other Assets | Derivative Designated as Cash Flow Hedges | Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets, Fair Value	0	256
Other Assets | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets, Fair Value	29,174	14,437
Other Assets | Not Designated as Hedging Instrument | Residential Mortgage Loan Commitments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets, Fair Value	150	69
Other Assets | Not Designated as Hedging Instrument | Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets, Fair Value	28,718	14,300
Other Assets | Not Designated as Hedging Instrument | Credit Contract
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets, Fair Value	306	68
Other Liabilities | Derivative Designated as Cash Flow Hedges | Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities, Fair Value	27,409	1,502
Other Liabilities | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities, Fair Value	30,907	14,784
Other Liabilities | Not Designated as Hedging Instrument | Residential Mortgage Loan Commitments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities, Fair Value	0	0
Other Liabilities | Not Designated as Hedging Instrument | Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities, Fair Value	30,778	14,730
Other Liabilities | Not Designated as Hedging Instrument | Credit Contract
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities, Fair Value	$ 129	$ 54

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities - Effect of Derivative Financial Instruments on Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income	$ (764)	$ 2,519	$ (355)	$ 2,647
Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income		2,519		2,647
Other Non-interest Income | Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income		2,822		2,822
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income	(800)	(303)	(400)	(175)
Interest Expense | Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivatives	(3,821)	3,006	(19,391)	5,055
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income	(764)	(303)	(355)	(175)
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	55	1,284	373	1,653
Not Designated as Hedging Instrument | Other Non-interest Income | Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	(35)	1,139	63	1,472
Not Designated as Hedging Instrument | Other Non-interest Income | Credit Contract
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	85	156	228	119
Not Designated as Hedging Instrument | Mortgage Banking Income | Residential Mortgage Loan Commitments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	$ 5	$ (11)	$ 82	$ 62

Derivative Instruments and He_6

Derivative Instruments and Hedging Activities - Summary of Offsetting of Financial Assets and Derivative Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Offsetting Assets [Line Items]
Net Amounts of Assets Presented in the Consolidated Balance Sheet	$ 29,174	$ 14,693
Interest Rate Swaps
Offsetting Assets [Line Items]
Gross Amount of Recognized Assets	131	7,529
Gross Amounts Offset in the Consolidated Balance Sheet	0	0
Net Amounts of Assets Presented in the Consolidated Balance Sheet	131	7,529
Gross amounts not offset in the consolidated balance sheet, Financial instruments	0	0
Gross amounts not offset in the consolidated balance sheet, Cash collateral received	0	1,860
Gross amounts not offset in the consolidated balance sheet, Net amount	$ 131	$ 5,669

Derivative Instruments and He_7

Derivative Instruments and Hedging Activities - Summary of Offsetting of Financial Liabilities and Derivative Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Offsetting Liabilities [Line Items]
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet	$ 58,316	$ 16,286
Interest Rate Swaps
Offsetting Liabilities [Line Items]
Gross Amount of Recognized Liabilities	58,056	9,077
Gross Amounts Offset in the Consolidated Balance Sheet	0	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet	58,056	9,077
Gross amounts not offset in the consolidated balance sheet, Financial instruments	0	0
Gross amounts not offset in the consolidated balance sheet, Cash collateral pledged	57,832	702
Gross amounts not offset in the consolidated balance sheet, Net amount	$ 224	$ 8,375

Business Segments - Narrative (

Business Segments - Narrative (Details) - Segment	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019
Segment Reporting Information [Line Items]
Number of reportable segments (segment)			2
Operating Segments | BankMobile
Segment Reporting Information [Line Items]
Effective tax rate	23.15%	24.57%

Business Segments (Details)

Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Interest income	$ 126,718	$ 110,045	$ 339,745	$ 314,649
Interest expense	50,983	46,044	140,027	118,295
Net interest income	75,735	64,001	199,718	196,354
Provision for loan and lease losses	4,426	2,924	14,539	4,257
Total non-interest income	23,369	2,084	55,125	39,120
Non-interest expense	59,592	57,104	173,160	163,134
Income before income tax expense	35,086	6,057	67,144	68,083
Income tax expense (benefit)	8,020	28	15,343	14,250
Net income (loss)	27,066	6,029	51,801	53,833
Preferred stock dividends	3,615	3,615	10,844	10,844
Net income (loss) available to common shareholders	23,451	2,414	40,957	42,989
Goodwill and other intangibles	15,521		15,521		$ 16,499
Total assets	11,723,790		11,723,790		9,833,425
Total deposits	8,925,685		8,925,685		$ 7,142,236
Operating Segments
Segment Reporting Information [Line Items]
Interest income	126,718	110,045	339,745	314,649
Interest expense	50,983	46,044	140,027	118,295
Net interest income	75,735	64,001	199,718	196,354
Provision for loan and lease losses	4,426	2,924	14,539	4,257
Total non-interest income	23,369	2,084	55,125	39,120
Non-interest expense	59,592	57,104	173,160	163,134
Income before income tax expense	35,086	6,057	67,144	68,083
Income tax expense (benefit)	8,020	28	15,343	14,250
Net income (loss)	27,066	6,029	51,801	53,833
Preferred stock dividends	3,615	3,615	10,844	10,844
Net income (loss) available to common shareholders	23,451	2,414	40,957	42,989
Goodwill and other intangibles	15,521	16,825	15,521	16,825
Total assets	11,723,790	10,617,104	11,723,790	10,617,104
Total deposits	8,925,685	8,513,714	8,925,685	8,513,714
Total non-deposit liabilities	1,778,955	1,148,578	1,778,955	1,148,578
Operating Segments | Customers Bank Business Banking
Segment Reporting Information [Line Items]
Interest income	113,995	106,156	309,882	302,820
Interest expense	50,734	45,982	139,402	118,081
Net interest income	63,261	60,174	170,480	184,739
Provision for loan and lease losses	2,475	2,502	3,245	3,128
Total non-interest income	11,757	(7,756)	20,304	8,147
Non-interest expense	38,347	36,115	111,840	108,168
Income before income tax expense	34,196	13,801	75,699	81,590
Income tax expense (benefit)	7,814	1,930	17,324	17,567
Net income (loss)	26,382	11,871	58,375	64,023
Preferred stock dividends	3,615	3,615	10,844	10,844
Net income (loss) available to common shareholders	22,767	8,256	47,531	53,179
Goodwill and other intangibles	3,629	3,629	3,629	3,629
Total assets	11,131,914	10,542,175	11,131,914	10,542,175
Total deposits	8,260,080	7,781,225	8,260,080	7,781,225
Total non-deposit liabilities	1,747,846	1,134,251	1,747,846	1,134,251
Operating Segments | BankMobile
Segment Reporting Information [Line Items]
Interest income	12,723	3,889	29,863	11,829
Interest expense	249	62	625	214
Net interest income	12,474	3,827	29,238	11,615
Provision for loan and lease losses	1,951	422	11,294	1,129
Total non-interest income	11,612	9,840	34,821	30,973
Non-interest expense	21,245	20,989	61,320	54,966
Income before income tax expense	890	(7,744)	(8,555)	(13,507)
Income tax expense (benefit)	206	(1,902)	(1,981)	(3,317)
Net income (loss)	684	(5,842)	(6,574)	(10,190)
Preferred stock dividends	0	0	0	0
Net income (loss) available to common shareholders	684	(5,842)	(6,574)	(10,190)
Goodwill and other intangibles	11,892	13,196	11,892	13,196
Total assets	591,876	74,929	591,876	74,929
Total deposits	665,605	732,489	665,605	732,489
Total non-deposit liabilities	31,109	14,327	31,109	14,327
Segment Reconciling Items | BankMobile
Segment Reporting Information [Line Items]
Interest income	$ 300	$ 3,900	$ 8,100	$ 11,800

Non-Interest Revenues - Non-int

Non-Interest Revenues - Non-interest Revenues by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Non-interest income	$ 11,779	$ 10,297	$ 35,370	$ 32,352
Interchange and card revenue
Disaggregation of Revenue [Line Items]
Non-interest income	6,869	7,084	22,435	23,127
Deposit fees
Disaggregation of Revenue [Line Items]
Non-interest income	3,642	2,002	9,199	5,726
Customers Bank Business Banking
Disaggregation of Revenue [Line Items]
Non-interest income	638	492	1,770	1,480
BankMobile
Disaggregation of Revenue [Line Items]
Non-interest income	11,141	9,805	33,600	30,872
Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Non-interest income	10,773	9,347	32,417	29,625
Transferred at Point in Time | Interchange and card revenue
Disaggregation of Revenue [Line Items]
Non-interest income	6,869	7,084	22,435	23,127
Transferred at Point in Time | Deposit fees
Disaggregation of Revenue [Line Items]
Non-interest income	3,642	2,002	9,199	5,726
Transferred at Point in Time | University fees - card and disbursement fees
Disaggregation of Revenue [Line Items]
Non-interest income	262	261	783	772
Transferred at Point in Time | Customers Bank Business Banking
Disaggregation of Revenue [Line Items]
Non-interest income	638	492	1,770	1,480
Transferred at Point in Time | Customers Bank Business Banking | Interchange and card revenue
Disaggregation of Revenue [Line Items]
Non-interest income	181	181	580	588
Transferred at Point in Time | Customers Bank Business Banking | Deposit fees
Disaggregation of Revenue [Line Items]
Non-interest income	457	311	1,190	892
Transferred at Point in Time | Customers Bank Business Banking | University fees - card and disbursement fees
Disaggregation of Revenue [Line Items]
Non-interest income	0	0	0	0
Transferred at Point in Time | BankMobile
Disaggregation of Revenue [Line Items]
Non-interest income	10,135	8,855	30,647	28,145
Transferred at Point in Time | BankMobile | Interchange and card revenue
Disaggregation of Revenue [Line Items]
Non-interest income	6,688	6,903	21,855	22,539
Transferred at Point in Time | BankMobile | Deposit fees
Disaggregation of Revenue [Line Items]
Non-interest income	3,185	1,691	8,009	4,834
Transferred at Point in Time | BankMobile | University fees - card and disbursement fees
Disaggregation of Revenue [Line Items]
Non-interest income	262	261	783	772
Transferred over Time
Disaggregation of Revenue [Line Items]
Non-interest income	1,006	950	2,953	2,727
Transferred over Time | University fees - subscription revenue
Disaggregation of Revenue [Line Items]
Non-interest income	1,006	950	2,953	2,727
Transferred over Time | Customers Bank Business Banking
Disaggregation of Revenue [Line Items]
Non-interest income	0	0	0	0
Transferred over Time | Customers Bank Business Banking | University fees - subscription revenue
Disaggregation of Revenue [Line Items]
Non-interest income	0	0	0	0
Transferred over Time | BankMobile
Disaggregation of Revenue [Line Items]
Non-interest income	1,006	950	2,953	2,727
Transferred over Time | BankMobile | University fees - subscription revenue
Disaggregation of Revenue [Line Items]
Non-interest income	$ 1,006	$ 950	$ 2,953	$ 2,727

Loss Contingencies - Narrative

Loss Contingencies - Narrative (Details) - USD ($) $ in Millions	Oct. 01, 2019	Jun. 21, 2019	Sep. 30, 2019
Bureau of the Fiscal Service
Loss Contingencies [Line Items]
Loss contingency, damages sought, value		$ 5.4
Halbreiner Matter
Loss Contingencies [Line Items]
Legal reserve			$ 1
Halbreiner Matter | Subsequent Event
Loss Contingencies [Line Items]
Litigation settlement, estimated amount	$ 1
United States Department of Education Matter
Loss Contingencies [Line Items]
Legal reserve			1
Loss contingency, estimate of possible loss			6.5
Minimum | United States Department of Education Matter
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss			1
Maximum | United States Department of Education Matter
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss			$ 3