Customers Bancorp (CUBI) 10-Q 13 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 02, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Trading Symbol	CUBI
Entity Registrant Name	Customers Bancorp, Inc.
Entity Central Index Key	1,488,813
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		31,687,340

Consolidated Balance Sheet - Un

Consolidated Balance Sheet - Unaudited - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 12,943	$ 20,388
Interest-earning deposits	653,091	125,935
Cash and cash equivalents	666,034	146,323
Investment securities, at fair value	668,851	471,371
Loans held for sale (includes $1,383 and $1,886, respectively, at fair value)	1,383	146,077
Loans receivable, mortgage warehouse, at fair value	1,516,327	1,793,408
Loans receivable	7,239,950	6,768,258
Allowance for loan losses	(40,741)	(38,015)
Total loans receivable, net of allowance for loan losses	8,715,536	8,523,651
FHLB, Federal Reserve Bank, and other restricted stock	74,206	105,918
Accrued interest receivable	32,986	27,021
Bank premises and equipment, net	11,300	11,955
Bank-owned life insurance	263,117	257,720
Other real estate owned	1,450	1,726
Goodwill and other intangibles	16,825	16,295
Other assets	165,416	131,498
Total assets	10,617,104	9,839,555
Deposits:
Demand, non-interest bearing	1,338,167	1,052,115
Interest-bearing	7,175,547	5,748,027
Total deposits	8,513,714	6,800,142
Federal funds purchased	0	155,000
FHLB advances	835,000	1,611,860
Other borrowings	123,779	186,497
Subordinated debt	108,953	108,880
Accrued interest payable and other liabilities	80,846	56,212
Total liabilities	9,662,292	8,918,591
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, 2018 and December 31, 2017	217,471	217,471
Common stock, par value $1.00 per share; 200,000,000 shares authorized; 32,217,600 and 31,912,763 shares issued as of September 30, 2018 and December 31, 2017; 31,687,340 and 31,382,503 shares outstanding as of September 30, 2018 and December 31, 2017	32,218	31,913
Additional paid in capital	431,205	422,096
Retained earnings	302,404	258,076
Accumulated other comprehensive loss, net	(20,253)	(359)
Treasury stock, at cost (530,260 shares as of September 30, 2018 and December 31, 2017)	(8,233)	(8,233)
Total shareholders’ equity	954,812	920,964
Total liabilities and shareholders’ equity	$ 10,617,104	$ 9,839,555

Consolidated Balance Sheet - _2

Consolidated Balance Sheet - Unaudited (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Loans held for sale at fair value	$ 1,383	$ 146,251
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)	32,217,600	31,912,763
Common stock, shares outstanding (shares)	31,687,340	30,820,177
Treasury stock, shares (shares)	530,260	530,260
Significant Other Observable Inputs (Level 2)
Loans held for sale at fair value	$ 1,383	$ 1,886

Consolidated Statements of Inco

Consolidated Statements of Income - Unaudited - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest income:
Loans	$ 97,815	$ 88,740	$ 278,986	$ 248,708
Investment securities	8,495	7,307	26,932	21,017
Other	3,735	2,238	8,731	5,507
Total interest income	110,045	98,285	314,649	275,232
Interest expense:
Deposits	32,804	18,381	76,779	48,934
Other borrowings	2,431	3,168	9,082	6,767
FHLB advances	9,125	7,032	27,381	15,433
Subordinated debt	1,684	1,685	5,053	5,055
Total interest expense	46,044	30,266	118,295	76,189
Net interest income	64,001	68,019	196,354	199,043
Provision for loan losses	2,924	2,352	4,257	5,937
Net interest income after provision for loan losses	61,077	65,667	192,097	193,106
Non-interest income:
Bank-owned life insurance	1,869	1,672	5,769	5,297
Mortgage warehouse transactional fees	1,809	2,396	5,663	7,139
Gain on sale of SBA and other loans	1,096	1,144	3,404	3,045
Mortgage banking income	207	257	532	703
Impairment loss on investment securities	0	(8,349)	0	(12,934)
(Loss) gain on sale of investment securities	(18,659)	5,349	(18,659)	8,532
Other	6,676	3,328	13,558	7,741
Total non-interest income	2,084	18,026	39,120	59,170
Non-interest expense:
Salaries and employee benefits	25,462	24,807	78,135	69,569
Technology, communication, and bank operations	11,657	14,401	32,923	33,227
Professional services	4,743	7,403	14,563	21,142
Merger and acquisition related expenses	2,945	0	3,920	0
Occupancy	2,901	2,857	8,876	8,228
FDIC assessments, non-income taxes, and regulatory fees	2,415	2,475	6,750	6,615
Provision for operating losses	1,171	1,509	3,930	4,901
Advertising and promotion	820	404	1,529	1,108
Loan workout	516	915	1,823	1,844
Other real estate owned expenses	66	445	164	550
Other	4,408	5,824	10,521	13,634
Total non-interest expense	57,104	61,040	163,134	160,818
Income before income tax expense	6,057	22,653	68,083	91,458
Income tax expense	28	14,899	14,250	34,236
Net income (loss)	6,029	7,754	53,833	57,222
Preferred stock dividends	3,615	3,615	10,844	10,844
Net income (loss) available to common shareholders	$ 2,414	$ 4,139	$ 42,989	$ 46,378
Basic earnings per common share (usd per share)	$ 0.08	$ 0.13	$ 1.36	$ 1.52
Diluted earnings per common share (usd per share)	$ 0.07	$ 0.13	$ 1.33	$ 1.42
Interchange and card revenue
Non-interest income:
Non-interest income	$ 7,084	$ 9,570	$ 23,127	$ 31,729
Deposit fees
Non-interest income:
Non-interest income	$ 2,002	$ 2,659	$ 5,726	$ 7,918

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - Unaudited - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 6,029	$ 7,754	$ 53,833	$ 57,222
Unrealized (losses) gains on available-for-sale debt securities:
Unrealized (losses) gains arising during the period	(1,629)	(3,570)	(47,917)	15,192
Income tax effect	423	1,393	12,458	(5,924)
Reclassification adjustments for losses (gains) on securities included in net income	18,659	(5,349)	18,659	(8,532)
Income tax effect	4,851	(2,086)	4,851	(3,327)
Net unrealized gains (losses) on available-for-sale debt securities	12,602	(5,440)	(21,651)	4,063
Unrealized gains on cash flow hedges:
Unrealized gains (losses) arising during the period	4,062	171	6,830	(189)
Income tax effect	(1,056)	(67)	(1,775)	74
Reclassification adjustment for (gains) losses included in net income	(2,519)	572	(2,647)	2,166
Income tax effect	655	(223)	688	(845)
Net unrealized gains on cash flow hedges	1,142	453	3,096	1,206
Other comprehensive income (loss), net of income tax effect	13,744	(4,987)	(18,555)	5,269
Comprehensive income	$ 19,773	$ 2,767	$ 35,278	$ 62,491

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 (Loss) Income	Treasury Stock
Beginning balance, preferred stock (shares) at Dec. 31, 2016		9,000,000
Beginning balance, common stock (shares) at Dec. 31, 2016			30,289,917
Beginning balance at Dec. 31, 2016	$ 855,872	$ 217,471	$ 30,820	$ 427,008	$ 193,698	$ (4,892)	$ (8,233)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	57,222				57,222
Other comprehensive income (loss)	5,269					5,269
Preferred stock dividends	(10,844)				(10,844)
Share-based compensation expense	4,536			4,536
Exercise of warrants (shares)			50,387
Exercise of warrants	557		$ 50	507
Issuance of common stock under share-based compensation arrangements (shares)			447,328
Issuance of common stock under share-based compensation arrangements	(1,970)		$ 448	(2,418)
Ending balance, preferred stock (shares) at Sep. 30, 2017		9,000,000
Ending balance, common stock (shares) at Sep. 30, 2017			30,787,632
Ending balance at Sep. 30, 2017	910,642	$ 217,471	$ 31,318	429,633	240,076	377	(8,233)
Beginning balance, preferred stock (shares) at Jun. 30, 2017		9,000,000
Beginning balance, common stock (shares) at Jun. 30, 2017			30,730,784
Beginning balance at Jun. 30, 2017	910,289	$ 217,471	$ 31,261	428,488	235,938	5,364	(8,233)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	7,754				7,754
Other comprehensive income (loss)	(4,987)					(4,987)
Preferred stock dividends	(3,615)				(3,615)
Share-based compensation expense	1,602			1,602
Exercise of warrants (shares)			6,413
Exercise of warrants	137		$ 6	131
Issuance of common stock under share-based compensation arrangements (shares)			50,435
Issuance of common stock under share-based compensation arrangements	(538)		$ 51	(588)	(1)
Ending balance, preferred stock (shares) at Sep. 30, 2017		9,000,000
Ending balance, common stock (shares) at Sep. 30, 2017			30,787,632
Ending balance at Sep. 30, 2017	$ 910,642	$ 217,471	$ 31,318	429,633	240,076	377	(8,233)
Beginning balance, preferred stock (shares) at Dec. 31, 2017	9,000,000	9,000,000
Beginning balance, common stock (shares) at Dec. 31, 2017	30,820,177		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 (loss)	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	9,000,000
Ending balance, common stock (shares) at Sep. 30, 2018	31,687,340		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 (loss)	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
Ending balance, preferred stock (shares) at Sep. 30, 2018	9,000,000	9,000,000
Ending balance, common stock (shares) at Sep. 30, 2018	31,687,340		31,687,340
Ending balance at Sep. 30, 2018	$ 954,812	$ 217,471	$ 32,218	$ 431,205	$ 302,404	$ (20,253)	$ (8,233)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - Unaudited - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows from Operating Activities
Net income	$ 53,833,000	$ 57,222,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	4,257,000	5,937,000
Depreciation and amortization	10,235,000	7,476,000
Share-based compensation expense	6,595,000	5,377,000
Deferred taxes	6,238,000	286,000
Net amortization of investment securities premiums and discounts	1,204,000	520,000
Unrealized loss recognized on equity securities	1,533,000	0
Loss (gain) on sale of investment securities	18,659,000	(8,532,000)
Impairment loss on investment securities	0	12,934,000
Gain on sale of SBA and other loans	(3,880,000)	(3,553,000)
Origination of loans held for sale	(22,978,000)	(32,343,000)
Proceeds from the sale of loans held for sale	23,936,000	31,718,000
Amortization of fair value discounts and premiums	164,000	93,000
Net (gain) loss on sales of other real estate owned	(35,000)	154,000
Valuation and other adjustments to other real estate owned	124,000	298,000
Earnings on investment in bank-owned life insurance	(5,769,000)	(5,297,000)
Increase in accrued interest receivable and other assets	(21,525,000)	(27,862,000)
Increase (decrease) in accrued interest payable and other liabilities	25,774,000	(14,106,000)
Net Cash Provided By Operating Activities	98,365,000	30,322,000
Cash Flows from Investing Activities
Proceeds from maturities, calls and principal repayments of securities available for sale	38,926,000	36,461,000
Proceeds from sale of available-for-sale securities	476,182,000	670,522,000
Purchases of investment securities available for sale	(763,242,000)	(796,594,000)
Origination of mortgage warehouse loans	(21,739,744,000)	(22,738,383,000)
Proceeds from repayments of mortgage warehouse loans	22,016,825,000	22,893,950,000
Net increase in loans, excluding mortgage warehouse loans	(20,476,000)	(921,049,000)
Proceeds from sales of loans	42,211,000	124,703,000
Purchase of loans	(347,740,000)	(262,641,000)
Purchases of bank-owned life insurance	0	(90,000,000)
Proceeds from bank-owned life insurance	529,000	1,418,000
Net proceeds from (purchases of) FHLB, Federal Reserve Bank, and other restricted stock	31,712,000	(30,203,000)
Purchases of bank premises and equipment	(1,344,000)	(1,725,000)
Proceeds from sales of other real estate owned	421,000	1,680,000
Purchase of university relationship intangible asset	(1,502,000)	0
Purchase of leased assets under operating leases	(21,849,000)	0
Net Cash Used In Investing Activities	(289,091,000)	(1,111,861,000)
Cash Flows from Financing Activities
Net increase in deposits	1,713,572,000	293,301,000
Net (decrease) increase in short-term borrowed funds from the FHLB	(776,860,000)	593,543,000
Net (decrease) increase in federal funds purchased	(155,000,000)	64,000,000
(Repayments of) proceeds from issuance of long-term debt	(63,250,000)	98,564,000
Preferred stock dividends paid	(10,844,000)	(10,844,000)
Exercise of warrants	112,000	557,000
Payments of employee taxes withheld from share-based awards	(711,000)	(4,923,000)
Proceeds from issuance of common stock	3,418,000	2,112,000
Net Cash Provided By Financing Activities	710,437,000	1,036,310,000
Net Increase (Decrease) in Cash and Cash Equivalents	519,711,000	(45,229,000)
Cash and Cash Equivalents – Beginning	146,323,000	264,709,000
Cash and Cash Equivalents – Ending	666,034,000	219,480,000
Supplementary Cash Flows Information:
Interest paid	114,973,000	70,706,000
Income taxes paid	4,156,000	31,545,000
Non-cash items:
Transfer of loans to other real estate owned	234,000	83,000
Transfer of loans held for investment to held for sale	0	150,638,000
Transfer of loans held for sale to held for investment	$ 129,691,000	$ 0

Description of the Business

Description of the Business	9 Months Ended
	Sep. 30, 2018
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 accounting principles generally accepted in the United States (“U.S. GAAP”) and pursuant to the rules and regulations of the Securities and Exchange Commission (“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; Washington, D.C.; 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 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, Washington, D.C., 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. 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, 2018
Accounting Policies [Abstract]
Significant Accounting Policies and Basis of Presentation	IGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION Basis of Presentation The interim unaudited consolidated financial statements of Customers 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 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. On November 13, 2018, Customers Bancorp filed with the SEC a report on Form 8-K advising that its 2017, 2016, and 2015 audited consolidated financial statements and its interim unaudited consolidated financial statements as of and for the three and six month periods ended March 31, 2018 and 2017 and June 30, 2018 and 2017, respectively, should no longer be relied upon because of incorrect classifications of the cash flows used in and provided by its commercial mortgage warehouse lending activities between operating and investing activities on the consolidated statements of cash flows because the related loan balances were incorrectly classified as held for sale instead of held for investment (i.e., loans receivable) on its consolidated balance sheets. These misclassifications have no impact on total cash balances, total loans, total assets, the allowance for loan losses, total capital, regulatory capital ratios, net interest income, net interest margin, net income to shareholders, basic or diluted earnings per share, return on average assets, return on average equity, the efficiency ratio, asset quality ratios or other key performance metrics, including non-GAAP performance metrics, that Customers routinely discusses with analysts and investors. The December 31, 2017 consolidated balance sheet presented in this report has been derived from Customers' audited 2017 consolidated financial statements, restated to correct the classification of the mortgage warehouse loans as held for investment instead of held for sale. Because of a fair value option election that Customers made on July 1, 2012 that continues today, these loans are, and will continue to be, reported at their fair value and accordingly do not have an allowance for loan losses. 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 2017 consolidated financial statements of Customers included in its Annual Report on Form 10-K for the year ended December 31, 2017 filed with the SEC on February 23, 2018 (the "2017 Form 10-K") except to the extent they are affected by the restatement. That 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; Purchased Loans; Allowance for Loan Losses; Goodwill and Other Intangible Assets; Investments in FHLB, Federal Reserve Bank, and Other Restricted Stock; Other Real Estate Owned; Bank-Owned Life Insurance; Bank Premises and Equipment; Operating Leases; Treasury Stock; Income Taxes; Share-Based Compensation; Transfer of Financial Assets; Business Segments; Derivative Instruments and Hedging; Comprehensive Income (Loss); Earnings per Share; and Loss Contingencies. Results for interim periods are not necessarily indicative of those that may be expected for the fiscal year or any other period. There have been no material changes to Customers' significant accounting policies as disclosed in Customers' 2017 Form 10-K, except for the accounting policies related to Cash and Cash Equivalents and Statements of Cash Flows and Loans Held for Sale and Loans at Fair Value as described below. Restatement of Previously Issued Financial Statements In November 2018, Customers determined that the cash flow activities associated with its commercial mortgage warehouse lending transactions should have been reported as investing activities in its consolidated statements of cash flows because the related loan balances should have been classified as held for investment (i.e., loans receivable). Effective with the filing of this quarterly report on Form 10-Q, Customers changed its accounting policies such that commercial mortgage warehouse loans will be classified as held for investment and presented them as "Loans receivable, mortgage warehouse, at fair value" on its consolidated balance sheets. The cash flow activities associated with these commercial mortgage warehouse lending activities will be reported as investing activities in the consolidated statements of cash flows. The following tables set forth the effects of the correction on the consolidated balance sheet as of December 31, 2017 and the consolidated statements of cash flows for the nine months ended September 30, 2017. December 31, 2017 Consolidated Balance Sheet As Previously Reported Adjustments As Restated (amounts in thousands) Loans held for sale $ 1,939,485 $ (1,793,408 ) $ 146,077 Loans receivable, mortgage warehouse, at fair value — 1,793,408 1,793,408 Total loans receivable, net of allowance for loan losses 6,730,243 1,793,408 8,523,651 For the Nine Months Ended September 30, 2017 Consolidated Statements of Cash Flows As Previously Reported Adjustments As Restated (amounts in thousands) Origination of loans held for sale $ (22,770,726 ) $ 22,738,383 $ (32,343 ) Proceeds from the sale of loans held for sale 22,925,668 (22,893,950 ) 31,718 Net cash provided by operating activities 185,889 (155,567 ) 30,322 Origination of mortgage warehouse loans — (22,738,383 ) (22,738,383 ) Proceeds from repayments of mortgage warehouse loans — 22,893,950 22,893,950 Net cash used in investing activities (1,267,428 ) 155,567 (1,111,861 ) In addition, the December 31, 2017 comparative balances disclosed in NOTE 6 - LOANS HELD FOR SALE, NOTE 7 - LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES, and NOTE 9 - DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS, and the comparative balances reported throughout Management's Discussion and Analysis of Financial Condition and Results of Operations included elsewhere in this quarterly report on Form 10-Q, have been restated to present the corrected classification. Presented below are recently issued accounting standards that Customers has adopted as well as those that the Financial Accounting Standards Board (“FASB”) has issued but are not yet effective. Recently Issued Accounting Standards Accounting Standards Adopted in 2018 Standard Summary of guidance Effects on Financial Statements ASU 2018-13, Fair Value (Topic 820): Changes to the Disclosure Requirements for Fair Value Measurement Issued August 2018 Ÿ Eliminates disclosure requirements for the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for timing of transfers between levels, and the valuation processes for Level 3 fair value measurements. Ÿ Clarifies that the measurement uncertainty disclosure is to communicate information about the uncertainty in measurement as of the reporting date. Ÿ Expands disclosures to include unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. Ÿ Certain amendments are applied prospectively and retrospectively. Ÿ Effective for fiscal year beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption permitted. Ÿ Customers early adopted on September 30, 2018. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2018-03, Technical Corrections and Improvements to Financial Instruments-Overall (Subtopic 825-10) Issued February 2018 Ÿ Clarifies certain aspects of the guidance issued in ASU 2016-01 including: the ability to irrevocably elect to change the measurement approach for equity securities measured using the practical expedient (at cost plus or minus observable transactions less impairment) to a fair value method in accordance with ASC 820, Fair Value Measurement. Ÿ Provides clarification that if an observable transaction occurs for such securities, the adjustment is as of the observable transaction date. Ÿ Effective July 1, 2018 on a prospective basis with early adoption permitted. Ÿ Customers adopted on July 1, 2018 on a prospective basis. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements as Customers currently does not have any significant equity securities without readily determinable fair values. ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income/(Loss) ("AOCI") Issued February 2018 Ÿ Allows for reclassification from AOCI to retained earnings for stranded tax effects resulting from the 2017 Tax Cut and Jobs Act. Ÿ Requires an entity to disclose whether it has elected to reclassify stranded tax effects from AOCI to retained earnings and its policy for releasing income tax effects from AOCI. Ÿ Effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted. Ÿ Customers early adopted on January 1, 2018. Ÿ The adoption resulted in the reclassification of $0.3 million in stranded tax effects in Customers' AOCI related to net unrealized losses on its available-for-sale debt securities and cash flow hedges. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. Accounting Standards Adopted in 2018 (continued) Standard Summary of guidance Effects on Financial Statements ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities Issued August 2017 Ÿ Aligns the entity's risk management activities and financial reporting for hedging relationships. Ÿ Amends the existing hedge accounting model and expands an entity's ability to hedge nonfinancial and financial risk components and reduce complexity in fair value hedges of interest-rate risk. Ÿ Eliminates the requirement to separately measure and report hedge ineffectiveness and generally requires the entire change in the fair value of a hedging instrument to be presented in the same income statement line item as the hedge item. Ÿ Changes certain documentation and assessment requirements and modifies the accounting for components excluded from the assessment of hedge effectiveness. Ÿ Effective for fiscal years beginning after December 15, 2018. Early adoption is permitted. Ÿ In October 2018, the FASB issued ASU 2018-16 “Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate ("SOFR") Overnight Index Swap ("OIS") Rate as a Benchmark Interest Rate for Hedge Accounting Purposes," which permits the OIS rate based on SOFR as a U.S. benchmark interest rate for hedge accounting purposes. Ÿ Customers early adopted on January 1, 2018. Ÿ With the early adoption, Customers is able to pursue additional hedging strategies including the ability to apply fair value hedge accounting to a specified pool of assets by excluding the portion of the hedged items related to prepayments, defaults and other events. Ÿ These additional hedging strategies will allow Customers to better align the accounting and financial reporting of its hedging activities with the economic objectives thereby reducing the earnings volatility resulting from these hedging activities. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. Customers has updated its disclosures in NOTE 10 - DERIVATIVES INSTRUMENTS AND HEDGING ACTIVITIES as a result of early adopting this ASU. ASU 2017-09, Compensation - Stock Compensation: Scope of Modification Accounting Issued May 2017 Ÿ Clarifies when to account for a change to the terms or conditions of a share-based-payment award as a modification in ASC 718. Ÿ Provides that modification accounting is only required if the fair value, vesting conditions, or the classification of the award as equity or a liability changes as a result of the change in terms or conditions. Ÿ Effective January 1, 2018 on a prospective basis for awards modified on or after the adoption date. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2017-05, Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets Issued February 2017 Ÿ Clarifies the scope and application of the accounting guidance on the sale of nonfinancial assets to non-customers, including partial sales. Ÿ Clarifies that if substantially all of the fair value of the assets that are promised to the counterparty in a contract is concentrated in nonfinancial assets, then all of the financial assets promised to the counterparty are in substance nonfinancial assets within the scope of Subtopic 610-20. Ÿ Effective January 1, 2018 on a prospective basis. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2017-01, Clarifying the Definition of a Business Issued January 2017 Ÿ Narrows the definition of a business and clarifies that to be considered a business, the fair value of gross assets acquired (or disposed of) should not be concentrated in a single identifiable asset or a group of similar identifiable assets. Ÿ Also clarifies that in order to be considered a business, an acquisition would have to include an input and a substantive process that together will significantly contribute to the ability to create an output. Ÿ Effective January 1, 2018 on a prospective basis. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2016-18, Statement of Cash Flows: Restricted Cash Issued November 2016 Ÿ Requires inclusion of restricted cash in cash and cash equivalents when reconciling the beginning-of-period total amounts shown on the statement of cash flows. Ÿ Effective January 1, 2018 and requires retrospective application to all periods presented. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption did not result in any significant impact on Customers' financial condition, results of operations and consolidated financial statements, including its consolidated statement of cash flows, and therefore did not result in a retrospective application. Accounting Standards Adopted in 2018 (continued) Standard Summary of guidance Effects on Financial Statements ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory Issued October 2016 Ÿ Requires an entity to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Ÿ Eliminates the current exception for all intra-entity transfers of an asset other than inventory that requires deferral of the tax effects until the asset is sold to a third party or otherwise recovered through use. Ÿ Effective January 1, 2018 on a modified retrospective basis. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption of the ASU did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2016-15, Statement of Cash Flow: Classification of Certain Cash Receipts and Cash Payments Issued August 2016 Ÿ Aims to reduce the existing diversity in practice with regards to the classification of the following specific items in the statement of cash flows: 1. Cash payments for debt prepayment or debt extinguishment costs should be classified as a financing activity. 2. Cash paid by an acquirer soon after a business combination for the settlement of a contingent consideration liability recognized at the acquisition date will be classified in investing activities. 3. Cash proceeds received from the settlement of insurance claims will be classified on the basis of the related insurance coverage (i.e., the nature of the loss). 4. Cash proceeds received from the settlement of bank-owned life insurance policies will be classified as cash inflows from investing activities. 5. A transferor's beneficial interest obtained in a securitization of financial assets will be disclosed as a non-cash activity, and cash received from beneficial interests will be classified in investing activities. Ÿ Effective January 1, 2018 and requires retrospective application to all periods presented. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption did not result in any significant impact on Customers' financial condition, results of operations and consolidated financial statements, including its consolidated statement of cash flows, and therefore it did not result in a retrospective application. ASU 2016-04, Liabilities - Extinguishment of Liabilities: Recognition of Breakage for Certain Prepaid Stored-Value Products Issued March 2016 Ÿ Requires issuers of prepaid stored-value products (such as gift cards, telecommunication cards, and traveler's checks), to derecognize the financial liability related to those products for breakage. Breakage is the value of prepaid stored-value products that is not redeemed by consumers for goods, services or cash. Ÿ The amendments in this ASU provide a narrow scope exception to the guidance in Subtopic 405-20 to require that breakage be accounted for consistent with the breakage guidance in Topic 606. Ÿ Effective January 1, 2018 on a modified retrospective basis. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption of this ASU did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. Accounting Standards Adopted in 2018 (continued) Standard Summary of guidance Effects on Financial Statements ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities Issued January 2016 Ÿ Requires equity investments with certain exceptions to be measured at fair value with changes in fair value recognized in net income. Ÿ Simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. Ÿ Eliminates the requirement for public entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet. Ÿ Requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. Ÿ Requires an entity to present separately in other comprehensive income the portion of the change in fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. Ÿ Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or in the accompanying notes to the financial statements. Ÿ Clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities. Ÿ Effective January 1, 2018 on a modified retrospective basis. Ÿ Customers adopted on January 1, 2018 using a modified retrospective approach. Ÿ The adoption of this ASU resulted in a cumulative-effect adjustment that resulted in a $1.0 million reduction in AOCI and a corresponding increase in retained earnings for the same amount. Ÿ The $1.0 million represented the net unrealized gain on Customers' investment in Religare equity securities at December 31, 2017, as disclosed in NOTE 5 - INVESTMENT SECURITIES. Ÿ Customers also refined its calculation to determine the fair value of its held-for- investment loan portfolio for disclosure purposes using an exit price notion as part of adopting this ASU. The refined calculation did not have a significant impact on Customers' fair value disclosures. ASU 2014-09, Revenue from Contracts with Customers (Topic 606) Issued May 2014 Ÿ Supersedes the revenue recognition requirements in ASC 605. Ÿ Requires an entity to recognize revenue for the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Ÿ The amendment includes a five-step process to assist an entity in achieving the main principle(s) of revenue recognition under ASC 605. Ÿ Reframed the structure of the indicators of when an entity is acting as an agent and focused on evidence that an entity is acting as the principal or agent in a revenue transaction. Ÿ Requires additional qualitative and quantitative disclosures relating to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Ÿ Effective January 1 , 2018 and can either be applied retrospectively to each prior reporting period presented or as a cumulative effect adjustment as of the date of adoption (modified retrospective approach). Ÿ Customers adopted on January 1, 2018 on a modified retrospective basis. Ÿ Because the ASU does not apply to revenue associated with leases and financial instruments (including loans and securities), Customers concluded that the new guidance did not have a material impact on the elements of its consolidated statements of operations most closely associated with leases and financial instruments (such as interest income, interest expense and securities gains or losses). Ÿ Customers has identified its deposit-related fees, service charges, debit and prepaid card interchange income and university fees to be within the scope of the standard. Ÿ Customers has also completed its review of the related contracts and its evaluation of certain costs related to these revenue streams and determined that its debit and prepaid card interchange income, previously reported on a gross basis for periods prior to adoption, will need to be presented on a net basis under this ASU, as Customers is the agent. Ÿ The adoption of this ASU, did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. Additional discussion related to the adoption and the required quantitative and qualitative disclosures are included in NOTE 12 - NON-INTEREST REVENUES. Accounting Standards Issued But Not Yet Adopted 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 Ÿ 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. Ÿ 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. Ÿ Clarifies that existing impairment guidance in Subtopic 350-40 must be applied to the capitalized implementation costs as if they were long-lived assets. Ÿ Applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. Ÿ Effective for fiscal year beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption permitted. Ÿ Customers is currently evaluating the expected impact of this ASU on its 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 Ÿ 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. Ÿ 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. Ÿ 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). Ÿ 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. Ÿ Effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. Ÿ Customers currently does not grant share-based payment awards to non-employees and, accordingly, does not expect the adoption of this ASU to have a significant impact on its financial condition, results of operations and consolidated financial statements; however, Customers will continue to evaluate the potential impact of this ASU through the adoption date. Accounting Standards Issued But Not Yet Adopted (continued) Standard Summary of guidance Effects on Financial Statements ASU 2017-11, Accounting for Certain Financial Instruments with Down Round Features Issued July 2017 Ÿ Changes the classification analysis of certain equity-linked financial instruments (or embedded features) with down round features. Ÿ 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. Ÿ 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 earnings per share ("EPS"). Ÿ Effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. Ÿ Customers currently does not have any equity-linked financial instruments (or embedded features) with down round features and, accordingly, does not expect the adoption of this ASU to have a significant impact on its financial condition, results of operations and consolidated financial statements; however, Customers will continue to evaluate the potential impact of this ASU through the adoption date. ASU 2017-08, Receivables-Nonrefundable Fees and Other Costs: Premium Amortization on Purchased Callable Debt Securities Issued March 2017 Ÿ Requires that premiums for certain callable debt securities held be amortized to their earliest call date. Ÿ Effective for Customers beginning after December 15, 2018, with early adoption permitted. Ÿ Adoption of this new guidance must be applied on a modified retrospective approach. Ÿ Customers currently has an immaterial amount of callable debt securities purchased at a premium and, accordingly, does not expect the adoption of this ASU to have a significant impact on its financial condition, results of operations and consolidated financial statements; however, Customers will continue to evaluate the potential impact through the adoption date. ASU 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments Issued June 2016 Ÿ Requires an entity to utilize a new impairment model known as the current expected credit loss ("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 HTM securities), presents the net amount expected to be collected on the financial asset. Ÿ Replaces today's "incurred loss" approach and is expected to result in earlier recognition of credit losses. Ÿ 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. Ÿ Simplifies the accounting model for purchased credit-impaired debt securities and loans. Ÿ Effective beginning after December 15, 2019 with early adoption permitted. Ÿ Adoption can 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. Ÿ 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 lifetime expected loss estimates. Ÿ Customers has selected a third-party vendor to assist in the implementation process of its new model, which will include different assumptions used in calculating credit losses, such as estimating losses over the estimated life of a financial asset and will consider expected future changes in macroeconomic conditions. Ÿ The adoption of this ASU may result in an increase to Customers' allowance for loan losses which will depend upon the nature and characteristics of Customers' loan portfolio at the adoption date, as well as the macroeconomic conditions and forecasts at that date. Ÿ Customers currently does not intend to early adopt this new guidance. Accounting Standards Issued But Not Yet Adopted (continued) Standard Summary of guidance Effects on Financial Statements ASU 2016-02, Leases Issued February 2016 Ÿ Supersedes the current lease accounting guidance for both lessees and lessors under ASC 840, Leases. Ÿ From the lessee's perspective, the new standard establishes a right-of-use ("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. Ÿ Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement for lessees. Ÿ This ASU will require 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. Ÿ Effective beginning after December 15, 2018 with early adoption permitted. Ÿ A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. Ÿ 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. Ÿ Customers is in the process of its implementation, which includes evaluating its leasing activities and certain contracts for embedded leases. Customers will be utilizing a lease accounting software solution for its real estate leases and updating proce

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	ARNINGS 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 2018 2017 2018 2017 (amounts in thousands, except share and per share data) Net income available to common shareholders $ 2,414 $ 4,139 $ 42,989 $ 46,378 Weighted-average number of common shares outstanding - basic 31,671,122 30,739,671 31,554,407 30,597,314 Share-based compensation plans 601,622 1,754,480 750,573 2,004,917 Warrants 4,846 18,541 7,475 24,392 Weighted-average number of common shares - diluted 32,277,590 32,512,692 32,312,455 32,626,623 Basic earnings per common share $ 0.08 $ 0.13 $ 1.36 $ 1.52 Diluted earnings per common share $ 0.07 $ 0.13 $ 1.33 $ 1.42 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 2018 2017 2018 2017 Anti-dilutive securities: Share-based compensation awards 1,787,670 409,225 1,105,287 409,225 Warrants — 52,242 — 52,242 Total anti-dilutive securities 1,787,670 461,467 1,105,287 461,467

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income (Loss) By Component	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Changes in Accumulated Other Comprehensive Income (Loss) By Component	HANGES 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, 2018 and 2017 . All amounts are presented net of tax. Amounts in parentheses indicate reductions to accumulated other comprehensive income. Three Months Ended September 30, 2018 Available-for-sale debt securities (amounts in thousands) Unrealized Gains (Losses) Foreign Currency Items Total Unrealized Gains (Losses) Unrealized 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 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 securities (amounts in thousands) Unrealized Gains (Losses) Foreign Currency Items Total Unrealized Gains (Losses) 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 reclassification adjustments 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 (loss) (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 loss on sale of investment securities on the consolidated statements of income. During the three and nine months ended September 30, 2018, reclassification amounts of $18.7 million ( $13.8 million net of taxes), respectively, were reported as loss on sale of investment securities on the consolidated statements of income. Reclassification amounts for cash flow hedges are reported as either interest expense on FHLB advances 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 FHLB advances on 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 accumulated other comprehensive income of $1.3 million and a corresponding increase in retained earnings for the same amount. See NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION for more information. Three Months Ended September 30, 2017 (amounts in thousands) Unrealized Gains (Losses) on Available-For-Sale Securities Unrealized Total Balance - June 30, 2017 $ 6,822 $ (1,458 ) $ 5,364 Other comprehensive income (loss) before reclassifications (2,177 ) 104 (2,073 ) Amounts reclassified from accumulated other comprehensive income (loss) to net income (1) (3,263 ) 349 (2,914 ) Net current-period other comprehensive income (loss) (5,440 ) 453 (4,987 ) Balance - September 30, 2017 $ 1,382 $ (1,005 ) $ 377 Nine Months Ended September 30, 2017 (amounts in thousands) Unrealized Gains (Losses) on Available-For-Sale Securities Unrealized Total Balance - December 31, 2016 $ (2,681 ) $ (2,211 ) $ (4,892 ) Other comprehensive income (loss) before reclassifications 9,268 (115 ) 9,153 Amounts reclassified from accumulated other comprehensive income (loss) to net income (1) (5,205 ) 1,321 (3,884 ) Net current-period other comprehensive income 4,063 1,206 5,269 Balance - September 30, 2017 $ 1,382 $ (1,005 ) $ 377 (1) Reclassification amounts for available-for-sale debt securities are reported as gain on sale of investment securities on the consolidated statements of income. During the three and nine months ended September 30, 2017, reclassification amounts of $5.3 million ( $3.3 million net of taxes) and $8.5 million ( $5.2 million net of taxes), respectively, 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 on FHLB advances on the consolidated statements of income. During the three and nine months ended September 30, 2017, reclassification amounts of $572 thousand ( $349 thousand net of taxes) and $2.2 million ( $1.3 million net of taxes) were reported as interest expense on FHLB advances on the consolidated statements of income.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Investment Securities	NVESTMENT SECURITIES The amortized cost and approximate fair value of investment securities as of September 30, 2018 and December 31, 2017 are summarized in the tables below: September 30, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (amounts in thousands) Available-for-sale debt securities: Agency-guaranteed residential mortgage-backed securities $ 316,785 $ — $ (11,367 ) $ 305,418 Corporate notes 381,475 347 (20,208 ) 361,614 Available-for-sale debt securities $ 698,260 $ 347 $ (31,575 ) 667,032 Equity securities (1) 1,819 Total investment securities, at fair value $ 668,851 (1) Includes equity securities issued by a foreign entity that are being measured at fair value with changes in fair value recognized directly in earnings effective January 1, 2018 as a result of adopting ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (see NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION for additional information related to the adoption of this new standard). December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (amounts in thousands) Available-for-sale securities: Agency-guaranteed residential mortgage-backed securities $ 186,221 $ 36 $ (2,799 ) $ 183,458 Agency-guaranteed commercial real estate mortgage-backed securities 238,809 432 (769 ) 238,472 Corporate notes (1) 44,959 1,130 — 46,089 Equity securities (2) 2,311 1,041 — 3,352 Total available-for-sale securities, at fair value $ 472,300 $ 2,639 $ (3,568 ) $ 471,371 (1) Includes subordinated debt issued by other bank holding companies. (2) Includes equity securities issued by a foreign entity. The following table presents proceeds from the sale of investment securities and gross gains and gross losses realized on those sales for the three and nine month periods ended September 30, 2018 and 2017 : Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (amounts in thousands) Proceeds from sale of available-for-sale securities $ 476,182 $ 554,540 $ 476,182 $ 670,522 Gross gains $ — $ 5,349 $ — $ 8,532 Gross losses (18,659 ) — (18,659 ) — Net (losses)/gains $ (18,659 ) $ 5,349 $ (18,659 ) $ 8,532 These (losses)/gains were determined using the specific identification method and were reported as (loss) gain on sale of investment securities included in non-interest income on the consolidated statements of income. The following table shows debt securities by stated maturity. Debt securities backed by mortgages 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, 2018 Amortized Cost Fair Value (amounts in thousands) Due in one year or less $ — $ — Due after one year through five years — — Due after five years through ten years 229,807 218,904 Due after ten years 151,668 142,710 Agency-guaranteed residential mortgage-backed securities 316,785 305,418 Total debt securities $ 698,260 $ 667,032 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 September 30, 2018 and December 31, 2017 were as follows: September 30, 2018 Less Than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (amounts in thousands) Available-for-sale debt securities: Agency-guaranteed residential mortgage-backed securities $ 305,418 $ (11,367 ) $ — $ — $ 305,418 $ (11,367 ) Corporate notes 321,303 (20,208 ) — — 321,303 (20,208 ) Total $ 626,721 $ (31,575 ) $ — $ — $ 626,721 $ (31,575 ) December 31, 2017 Less Than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (amounts in thousands) Available-for-sale debt securities: Agency-guaranteed residential mortgage-backed securities $ 104,861 $ (656 ) $ 66,579 $ (2,143 ) $ 171,440 $ (2,799 ) Agency-guaranteed commercial real estate mortgage-backed securities 115,970 (740 ) 6,151 (29 ) 122,121 (769 ) Total $ 220,831 $ (1,396 ) $ 72,730 $ (2,172 ) $ 293,561 $ (3,568 ) At September 30, 2018 , there were twenty-eight available-for-sale debt securities in the less-than-twelve-month category and no available-for-sale debt securities in the twelve-month-or-more category. The unrealized losses on the mortgage-backed securities are guaranteed by government-sponsored entities and primarily relate to changes in market interest rates. The unrealized losses on the corporate notes relate to securities with no company specific concentration. The unrealized losses were due to an upward shift in interest rates that resulted in a negative impact on the respective note's fair value. All amounts related to the mortgage-backed securities and the corporate notes are expected to be recovered when market prices recover or at maturity. Customers does not intend to sell these securities and it is not more likely than not that Customers will be required to sell the securities before recovery of the amortized cost basis. During the three and nine month periods ended September 30, 2017 , Customers recorded other-than-temporary impairment losses of $8.3 million and $12.9 million , respectively, related to its equity holdings in Religare Enterprises Ltd. ("Religare") for the full amount of the decline in fair value from the cost basis established at December 31, 2016 through September 30, 2017 because Customers no longer had the intent to hold these securities until a recovery in fair value. At December 31, 2017, the fair value of the Religare equity securities was $3.4 million , which resulted in an unrealized gain of $1.0 million being recognized in accumulated other comprehensive income with no adjustment for deferred taxes as Customers currently does not have a tax strategy in place capable of generating sufficient capital gains to utilize any capital losses resulting from the Religare investment. As described in NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION, the adoption of ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, on January 1, 2018 resulted in a cumulative effect adjustment to Customers' consolidated balance sheet with a $1.0 million reduction in accumulated other comprehensive income and a corresponding increase in retained earnings related to the December 31, 2017 unrealized gain on the Religare equity securities. In accordance with the new accounting guidance, changes in the fair value of the Religare equity securities since adoption are recorded directly in earnings, which resulted in an unrealized loss of $1.2 million and $1.5 million being recognized in other non-interest income in the accompanying consolidated statements of income for the three and nine months ended September 30, 2018 , respectively. At September 30, 2018 and December 31, 2017 , Customers Bank had pledged investment securities aggregating $187.1 million and $16.9 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.

Loans Held for Sale

Loans Held for Sale	9 Months Ended
	Sep. 30, 2018
Receivables Held-for-sale [Abstract]
Loans Held for Sale	LOANS HELD FOR SALE - As Restated The composition of loans held for sale as of September 30, 2018 and December 31, 2017 was as follows: September 30, 2018 December 31, 2017 (amounts in thousands) (As Restated) Commercial loans: Multi-family loans at lower of cost or fair value $ — $ 144,191 Total commercial loans held for sale — 144,191 Consumer loans: Residential mortgage loans, at fair value 1,383 1,886 Loans held for sale $ 1,383 $ 146,077 Effective March 31, 2018, Customers Bank transferred $129.7 million of multi-family loans from loans held for sale to loan receivable (held for investment) because the Bank no longer has the intent to sell these loans. Customers Bank transferred these loans at their carrying value, which approximated their fair value at the time of transfer. On June 30, 2017, Customers Bank transferred $150.6 million of multi-family loans from held for investment to loans held for sale. Customers Bank transferred these loans at their carrying value, which was lower than the estimated fair value at the time of transfer. At December 31, 2017, the carrying value of these loans approximated their fair value. Accordingly, a lower of cost or fair value adjustment was not recorded as of December 31, 2017. See NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION for more information on the reclassification of loans previously reported as held for sale.

Loans Receivable and Allowance

Loans Receivable and Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2018
Receivables [Abstract]
Loans Receivable and Allowance for Loan Losses	OANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - As Restated The following table presents loans receivable as of September 30, 2018 and December 31, 2017 . September 30, 2018 December 31, 2017 (amounts in thousands) (As Restated) Loans receivable, mortgage warehouse, at fair value $ 1,516,327 $ 1,793,408 Loans receivable: Commercial: Multi-family 3,504,540 3,502,381 Commercial and industrial (including owner occupied commercial real estate) 1,841,704 1,633,818 Commercial real estate non-owner occupied 1,157,849 1,218,719 Construction 95,250 85,393 Total commercial loans receivable 6,599,343 6,440,311 Consumer: Residential real estate 509,853 234,090 Manufactured housing 82,589 90,227 Other 51,210 3,547 Total consumer loans receivable 643,652 327,864 Loans receivable 7,242,995 6,768,175 Deferred (fees)/costs and unamortized (discounts)/premiums, net (3,045 ) 83 Allowance for loan losses (40,741 ) (38,015 ) Total loans receivable, net of allowance for loan losses $ 8,715,536 $ 8,523,651 Customers' total loans 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 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 of 25 days from purchase to sale. The primary goal of these lending transactions is to provide liquidity to mortgage companies. At September 30, 2018 and December 31, 2017, all of Customers' commercial mortgage warehouse loans were current in terms of payment. Because these loans are reported at their fair value, they do not have an allowance for loan loss and are therefore excluded from allowance for loan losses related disclosures. Loans receivable: The following tables summarize loans receivable by loan type and performance status as of September 30, 2018 and December 31, 2017 : September 30, 2018 30-89 Days 90 Days Total Past Non- Current (2) Purchased- Total (amounts in thousands) Multi-family $ — $ — $ — $ 1,343 $ 3,501,450 $ 1,747 $ 3,504,540 Commercial and industrial 418 — 418 13,287 1,271,813 572 1,286,090 Commercial real estate owner occupied — — — 1,298 545,647 8,669 555,614 Commercial real estate non-owner occupied — — — 158 1,153,107 4,584 1,157,849 Construction — — — — 95,250 — 95,250 Residential real estate 2,321 — 2,321 5,522 497,211 4,799 509,853 Manufactured housing (5) 3,475 2,300 5,775 1,921 72,777 2,116 82,589 Other consumer 45 — 45 112 50,832 221 51,210 Total $ 6,259 $ 2,300 $ 8,559 $ 23,641 $ 7,188,087 $ 22,708 $ 7,242,995 December 31, 2017 30-89 Days 90 Days Total Past Non- Current (2) Purchased- Total (amounts in thousands) Multi-family $ 4,900 $ — $ 4,900 $ — $ 3,495,600 $ 1,881 $ 3,502,381 Commercial and industrial 103 — 103 17,392 1,130,831 764 1,149,090 Commercial real estate owner occupied 202 — 202 1,453 472,501 10,572 484,728 Commercial real estate non-owner occupied 93 — 93 160 1,213,216 5,250 1,218,719 Construction — — — — 85,393 — 85,393 Residential real estate 7,628 — 7,628 5,420 215,361 5,681 234,090 Manufactured housing (5) 4,028 2,743 6,771 1,959 78,946 2,551 90,227 Other consumer 116 — 116 31 3,184 216 3,547 Total $ 17,070 $ 2,743 $ 19,813 $ 26,415 $ 6,695,032 $ 26,915 $ 6,768,175 (1) Includes past due loans that are accruing interest because collection is considered probable. (2) Loans 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 allowance for loan losses. (5) Manufactured housing loans purchased in 2010 are supported by cash reserves held at the Bank that are used to fund past-due payments when the loan becomes 90 days or more delinquent. Subsequent purchases are subject to varying provisions in the event of borrowers’ delinquencies. As of September 30, 2018 and December 31, 2017 , the Bank had $0.4 million and $0.3 million , respectively, of residential real estate held in other real estate owned. As of September 30, 2018 and December 31, 2017 , the Bank had initiated foreclosure proceedings on $2.1 million and $1.6 million , respectively, in loans secured by residential real estate. Allowance for loan losses The changes in the allowance for loan losses for the three and nine months ended September 30, 2018 and 2017 , and the loans and allowance for loan losses by loan type based on impairment-evaluation method as of September 30, 2018 and December 31, 2017 are presented in the tables below. Three Months Ended September 30, 2018 Multi-family Commercial and Industrial Commercial Real Estate Owner Occupied Commercial Construction Residential Manufactured 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 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 September 30, 2018 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 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 September 30, 2018 Loans: Individually evaluated for impairment $ 1,343 $ 13,353 $ 1,335 $ 158 $ — $ 8,581 $ 10,378 $ 112 $ 35,260 Collectively evaluated for impairment 3,501,450 1,272,165 545,610 1,153,107 95,250 496,473 70,095 50,877 7,185,027 Loans acquired with credit deterioration 1,747 572 8,669 4,584 — 4,799 2,116 221 22,708 Total loans receivable (1) $ 3,504,540 $ 1,286,090 $ 555,614 $ 1,157,849 $ 95,250 $ 509,853 $ 82,589 $ 51,210 $ 7,242,995 Allowance for loan losses: Individually evaluated for impairment $ — $ 1,381 $ 80 $ — $ — $ 306 $ 4 $ — $ 1,771 Collectively evaluated for impairment 11,829 10,881 3,072 4,298 1,062 3,072 88 1,471 35,773 Loans acquired with credit deterioration — 452 — 2,151 — 523 2 69 3,197 Allowance for loan losses $ 11,829 $ 12,714 $ 3,152 $ 6,449 $ 1,062 $ 3,901 $ 94 $ 1,540 $ 40,741 Three Months Ended September 30, 2017 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, $ 12,028 $ 11,585 $ 2,976 $ 7,786 $ 716 $ 2,995 $ 268 $ 104 $ 38,458 Charge-offs — (2,032 ) — (77 ) — (120 ) — (356 ) (2,585 ) Recoveries — 54 — — 27 7 — 1 89 Provision for loan losses 668 966 262 (53 ) 104 72 (77 ) 410 2,352 Ending Balance, $ 12,696 $ 10,573 $ 3,238 $ 7,656 $ 847 $ 2,954 $ 191 $ 159 $ 38,314 Nine Months Ended September 30, 2017 Ending Balance, $ 11,602 $ 11,050 $ 2,183 $ 7,894 $ 840 $ 3,342 $ 286 $ 118 $ 37,315 Charge-offs — (4,079 ) — (485 ) — (410 ) — (602 ) (5,576 ) Recoveries — 337 9 — 157 34 — 101 638 Provision for loan losses 1,094 3,265 1,046 247 (150 ) (12 ) (95 ) 542 5,937 Ending Balance, $ 12,696 $ 10,573 $ 3,238 $ 7,656 $ 847 $ 2,954 $ 191 $ 159 $ 38,314 As of December 31, 2017 Loans: Individually evaluated for impairment $ — $ 17,461 $ 1,448 $ 160 $ — $ 9,247 $ 10,089 $ 30 $ 38,435 Collectively evaluated for impairment 3,500,500 1,130,865 472,708 1,213,309 85,393 219,162 77,587 3,301 6,702,825 Loans acquired with credit deterioration 1,881 764 10,572 5,250 — 5,681 2,551 216 26,915 Total loans receivable $ 3,502,381 $ 1,149,090 $ 484,728 $ 1,218,719 $ 85,393 $ 234,090 $ 90,227 $ 3,547 $ 6,768,175 Allowance for loan losses: Individually evaluated for impairment $ — $ 650 $ 642 $ — $ — $ 155 $ 4 $ — $ 1,451 Collectively evaluated for impairment 12,168 9,804 2,580 4,630 979 2,177 82 117 32,537 Loans acquired with credit deterioration — 464 10 2,807 — 597 94 55 4,027 Allowance for loan losses $ 12,168 $ 10,918 $ 3,232 $ 7,437 $ 979 $ 2,929 $ 180 $ 172 $ 38,015 Certain manufactured housing loans were purchased in August 2010. A portion of the purchase price may be used to reimburse the Bank under the specified terms in the purchase agreement for defaults of the underlying borrower and other specified items. At September 30, 2018 and December 31, 2017 , funds available for reimbursement, if necessary, were $0.5 million and $0.6 million , respectively. Each quarter, these funds are evaluated to determine if they would be sufficient to absorb the probable incurred losses within the manufactured housing portfolio. 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, 2018 and December 31, 2017 and the average recorded investment and interest income recognized for the three and nine months ended September 30, 2018 and 2017 . Purchased-credit-impaired loans are considered to be performing and are not included in the tables below. September 30, 2018 Three Months Ended September 30, 2018 Nine Months Ended Recorded Unpaid Related Average Interest Average Interest (amounts in thousands) With no recorded allowance: Multi-family $ 1,343 $ 1,343 $ — $ 1,343 $ — $ 672 $ 8 Commercial and industrial 9,888 10,224 — 7,765 166 7,623 168 Commercial real estate owner occupied 704 1,187 — 711 — 711 — Commercial real estate non-owner occupied 158 271 — 1,347 — 774 8 Other consumer 112 112 — 103 1 83 1 Residential real estate 4,259 4,504 — 4,281 23 3,952 25 Manufactured housing 10,152 10,152 — 10,147 144 10,011 421 With an allowance recorded: Commercial and industrial 3,465 3,648 1,381 5,787 27 7,089 39 Commercial real estate owner occupied 631 631 80 336 9 546 11 Residential real estate 4,322 4,329 306 4,398 61 4,760 124 Manufactured housing 226 226 4 227 4 225 10 Total $ 35,260 $ 36,627 $ 1,771 $ 36,445 $ 435 $ 36,446 $ 815 December 31, 2017 Three Months Ended Nine Months Ended Recorded Unpaid Related Average Interest Average Interest (amounts in thousands) With no recorded allowance: Commercial and industrial $ 9,138 $ 9,287 $ — $ 13,345 $ 354 $ 8,796 $ 450 Commercial real estate owner occupied 806 806 — 1,744 15 1,589 18 Commercial real estate non-owner occupied 160 272 — 184 91 989 93 Other consumer 30 30 — 44 — 50 — Residential real estate 3,628 3,801 — 5,228 125 4,865 126 Manufactured housing 9,865 9,865 — 10,243 164 10,038 457 With an allowance recorded: Commercial and industrial 8,323 8,506 650 1,963 — 5,400 22 Commercial real estate owner occupied 642 642 642 1,056 1 950 3 Commercial real estate non-owner occupied — — — 51 — 94 — Other consumer — — — 12 — 6 — Residential real estate 5,619 5,656 155 2,862 — 2,729 84 Manufactured housing 224 224 4 114 — 108 8 Total $ 38,435 $ 39,089 $ 1,451 $ 36,846 $ 750 $ 35,614 $ 1,261 Troubled Debt Restructurings At September 30, 2018 and December 31, 2017 , there were $19.4 million and $20.4 million , respectively, in loans reported as troubled debt restructurings (“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 purchased-credit-impaired loans that are accounted for within loan pools in accordance with the accounting standards for purchased-credit-impaired 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. The following table presents total TDRs based on loan type and accrual status at September 30, 2018 and December 31, 2017 . Nonaccrual TDRs are included in the reported amount of total non-accrual loans. September 30, 2018 December 31, 2017 Accruing Nonaccrual TDRs Total Accruing TDRs Nonaccrual TDRs Total (amounts in thousands) Commercial and industrial $ 66 $ 5,311 $ 5,377 $ 63 $ 5,939 $ 6,002 Commercial real estate owner occupied 37 — 37 — — — Manufactured housing 8,457 1,781 10,238 8,130 1,766 9,896 Residential real estate 3,059 698 3,757 3,828 703 4,531 Other consumer — 13 13 — — — Total TDRs $ 11,619 $ 7,803 $ 19,422 $ 12,021 $ 8,408 $ 20,429 The following table presents loans modified in a troubled debt restructuring by type of concession for the three and nine months ended September 30, 2018 and 2017 . There were no modifications that involved forgiveness of debt for the three and nine months ended September 30, 2018 and 2017 . Three Months Ended September 30, 2018 Three Months Ended September 30, 2017 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Extensions of maturity — $ — 1 $ 60 Interest-rate reductions 8 473 3 122 Total 8 $ 473 4 $ 182 Nine Months Ended September 30, 2018 Nine Months Ended September 30, 2017 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Extensions of maturity 1 $ 56 4 $ 6,263 Interest-rate reductions 32 1,402 32 1,297 Total 33 $ 1,458 36 $ 7,560 The following table provides, by loan type, the number of loans modified in troubled debt restructurings, and the related recorded investment, during the three and nine months ended September 30, 2018 and 2017 . Three Months Ended September 30, 2018 Three Months Ended September 30, 2017 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Manufactured housing 7 $ 321 4 $ 182 Residential real estate 1 152 — — Total loans 8 $ 473 4 $ 182 Nine Months Ended September 30, 2018 Nine Months Ended September 30, 2017 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Commercial and industrial — $ — 3 $ 6,203 Manufactured housing 30 1,093 33 1,357 Residential real estate 2 352 — — Other consumer 1 13 — — Total loans 33 $ 1,458 36 $ 7,560 As of September 30, 2018 and December 31, 2017 , except for one commercial and industrial loan with an outstanding commitment of $1.5 million and $2.1 million , respectively, there were no other commitments to lend additional funds to debtors whose loans have been modified in TDRs. As of September 30, 2018 , there were no loans modified in a TDR within the past twelve months that defaulted on payments. As of September 30, 2017 , ten manufactured housing loans totaling $0.5 million , that were modified in TDRs within the past twelve months , defaulted on payments. Loans modified in troubled debt restructurings 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 allowance for loan losses. There was no allowance recorded as a result of TDR modifications during the three and nine months ended September 30, 2018 . There was no allowance recorded as a result of TDR modifications during the three months ended September 30, 2017 . For the nine months ended September 30, 2017 , there was one allowance recorded resulting from TDR modifications, totaling $1 thousand for one manufactured housing loan. Purchased-Credit-Impaired Loans The changes in accretable yield related to purchased-credit-impaired loans for the three and nine months ended September 30, 2018 and 2017 were as follows: Three Months Ended September 30, 2018 2017 (amounts in thousands) Accretable yield balance as of June 30, $ 7,403 $ 9,006 Accretion to interest income (310 ) (368 ) Reclassification from nonaccretable difference and disposals, net (4 ) (276 ) Accretable yield balance as of September 30, $ 7,089 $ 8,362 Nine Months Ended September 30, 2018 2017 (amounts in thousands) Accretable yield balance as of December 31, $ 7,825 $ 10,202 Accretion to interest income (1,164 ) (1,326 ) Reclassification from nonaccretable difference and disposals, net 428 (514 ) Accretable yield balance as of September 30, $ 7,089 $ 8,362 Credit Quality Indicators The allowance for loan losses represents management's estimate of probable losses in Customers loans receivable portfolio, excluding mortgage warehouse loans carried under the fair value option. 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 allowance for loan losses 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. The risk rating grades are defined as follows: “1” – Pass / Excellent Loans rated 1 represent a credit extension of the highest quality. The borrower’s historic (at least five years) cash flows manifest extremely large and stable margins of coverage. Balance sheets are conservative, well capitalized, and liquid. After considering debt service for proposed and existing debt, projected cash flows continue to be strong and provide ample coverage. The borrower typically reflects broad geographic and product diversification and has access to alternative financial markets. “2” – Pass / Superior Loans rated 2 are those for which the borrower has a strong financial condition, balance sheet, operations, cash flow, debt capacity and coverage with ratios better than industry norms. The borrowers of these loans exhibit a limited leverage position, are virtually immune to local economies, and are in stable growing industries. The management team is well respected and the company has ready access to public markets. “3” – Pass / Strong Loans rated 3 are those loans for which the borrowers have above average financial condition and flexibility; more than satisfactory debt service coverage; balance sheet and operating ratios are consistent with or better than industry peers; operate in industries with little risk; move in diversified markets; and are experienced and competent in their industry. These borrowers’ access to capital markets is limited mostly to private sources, often secured, but the borrower typically has access to a wide range of refinancing alternatives. “4” – Pass / Good Loans rated 4 have a sound primary and secondary source of repayment. The borrower may have access to alternative sources of financing, but sources are not as widely available as they are to a higher grade borrower. These loans carry a normal level of risk, with very low loss exposure. The borrower has the ability to perform according to the terms of the credit facility. The margins of cash flow coverage are satisfactory but vulnerable to more rapid deterioration than the higher quality loans. “5” – Satisfactory Loans rated 5 are extended to borrowers who are considered to be a reasonable credit risk and demonstrate the ability to repay the debt from normal business operations. Risk factors may include reliability of margins and cash flows, liquidity, dependence on a single product or industry, cyclical trends, depth of management, or limited access to alternative financing sources. The borrower’s historical financial information may indicate erratic performance, but current trends are positive and the quality of financial information is adequate, but is not as detailed and sophisticated as information found on higher grade loans. If adverse circumstances arise, the impact on the borrower may be significant. “6” – Satisfactory / Bankable with Care Loans rated 6 are those for which the borrower has higher than normal credit risk; however, cash flow and asset values are generally intact. These borrowers may exhibit declining financial characteristics, with increasing leverage and decreasing liquidity and may have limited resources and access to financial alternatives. Signs of weakness in these borrowers may include delinquent taxes, trade slowness and eroding profit margins. “7” – Special Mention Loans rated 7 are credit facilities that may have potential developing weaknesses and deserve extra attention from the account manager and other management personnel. In the event potential weaknesses are not corrected or mitigated, deterioration in the ability of the borrower to repay the debt in the future may occur. This grade is not assigned to loans that bear certain peculiar risks normally associated with the type of financing involved, unless circumstances have caused the risk to increase to a level higher than would have been acceptable when the credit was originally approved. Loans where significant actual, not potential, weaknesses or problems are clearly evident are graded in the category below. “8” – Substandard Loans are rated 8 when the loans are inadequately protected by the current sound worth and payment capacity of the obligor or of the collateral pledged, if any. Loans so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt and are characterized by the distinct possibility that the company will sustain some loss if the weaknesses are not corrected. “9” – Doubtful The Bank assigns a doubtful rating to loans that have all the attributes of a substandard rating with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. The possibility of loss is extremely high, but because of certain important and reasonable specific pending factors that may work to the advantage of and strengthen the credit quality of the loan, its classification as an estimated loss is deferred until its more exact status may be determined. Pending factors may include a proposed merger or acquisition, liquidation proceeding, capital injection, perfecting liens on additional collateral or refinancing plans. “10” – Loss The Bank assigns a loss rating to loans considered uncollectible and of such little value that their continuance as an active asset is not warranted. Amounts classified as loss are immediately charged off. Risk ratings are not established for certain consumer loans, including residential real estate, home equity, manufactured housing, and installment loans, mainly because these portfolios consist of a larger number of homogeneous loans with smaller balances. Instead, these portfolios are evaluated for risk mainly based upon aggregate payment history through the monitoring of delinquency levels and trends and are classified as performing and non-performing. The following tables present the credit ratings of loans receivable as of September 30, 2018 and December 31, 2017 . September 30, 2018 Multi-Family Commercial and Industrial Commercial Real Estate Owner Occupied Commercial Real Estate Non-Owner Occupied Construction Residential Manufactured Housing Other Consumer Total (3) (amounts in thousands) Pass/Satisfactory $ 3,399,892 $ 1,235,945 $ 539,252 $ 1,084,388 $ 95,250 $ — $ — $ — $ 6,354,727 Special Mention 81,253 7,756 8,793 30,406 — — — — 128,208 Substandard 23,395 42,389 7,569 43,055 — — — — 116,408 Performing (1) — — — — — 502,010 74,893 51,053 627,956 Non-performing (2) — — — — — 7,843 7,696 157 15,696 Total $ 3,504,540 $ 1,286,090 $ 555,614 $ 1,157,849 $ 95,250 $ 509,853 $ 82,589 $ 51,210 $ 7,242,995 December 31, 2017 Multi-Family Commercial Commercial Real Estate Owner Occupied Commercial Real Estate Non-Owner Occupied Construction Residential Manufactured Housing Other Consumer Total (3) (amounts in thousands) Pass/Satisfactory $ 3,438,554 $ 1,118,889 $ 471,826 $ 1,185,933 $ 85,393 $ — $ — $ — $ 6,300,595 Special Mention 53,873 7,652 5,987 31,767 — — — — 99,279 Substandard 9,954 22,549 6,915 1,019 — — — — 40,437 Performing (1) — — — — — 221,042 81,497 3,400 305,939 Non-performing (2) — — — — — 13,048 8,730 147 21,925 Total $ 3,502,381 $ 1,149,090 $ 484,728 $ 1,218,719 $ 85,393 $ 234,090 $ 90,227 $ 3,547 $ 6,768,175 (1) Includes residential real estate, manufactured housing, and other consumer loans not subject to risk 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 mortgage warehouse loans carried under the fair value option. Loan Purchases and Sales During third quarter 2018 , Customers purchased $72.7 million of mortgage and consumer loans from third party financial institutions. The purchase price was 95.3% of loans outstanding. During third quarter 2018 , Customers sold $12.1 million of Small Business Administration (SBA) loans resulting in a gain on sale of $1.1 million . There were no loan purchases during third quarter 2017 . In third quarter 2017 , Customers sold $11.0 million of SBA loans resulting in a gain on sale of $1.1 million . In second quarter 2018 , Customers purchased $277.4 million of thirty -year fixed-rate residential mortgage loans from a third party financial institution. The purchase price was 100.4% of loans outstanding. During second quarter 2018 , Customers sold $11.7 million of SBA loans resulting in a gain on sale of $0.9 million . In second quarter 2017 , Customers purchased $90 million of thirty -year fixed-rate residential mortgage loans from a third party financial institution. The purchase price was 101.0% of loans outstanding. In second quarter 2017 , Customers sold $7.0 million of SBA loans resulting in a gain on sale of $0.6 million . Customers did not purchase any loans during first quarter 2018 . During first quarter 2018 , Customers sold $15.0 million of SBA loans resulting in a gain on sale of $1.4 million . In first quarter 2017 , Customers purchased $174.2 million of thirty -year fixed-rate residential mortgage loans from a third party financial institution. The purchase price was 98.5% of loans outstanding. In first quarter 2017 , Customers sold $94.9 million of multi-family loans for $95.4 million resulting in a gain on sale of $0.5 million and $8.7 million of SBA loans resulting in a gain on sale of $0.8 million . None of the purchases and sales during the three and nine months ended September 30, 2018 and 2017 materially affected the credit profile of Customers’ loan portfolio. Loans Pledged as Collateral Customers has pledged eligible real estate loans as collateral for potential borrowings from the Federal Home Loan Bank of Pittsburgh ("FHLB") and Federal Reserve Bank of Philadelphia ("FRB") in the amount of $5.5 billion at both September 30, 2018 and December 31, 2017 .

Regulatory Capital

Regulatory Capital	9 Months Ended
	Sep. 30, 2018
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, 2018 and December 31, 2017 , 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, 2018: Common equity Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 740,968 8.703 % $ 383,113 4.500 % N/A N/A $ 542,744 6.375 % Customers Bank $ 1,054,869 12.393 % $ 383,042 4.500 % $ 553,282 6.500 % $ 542,642 6.375 % Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 958,418 11.257 % $ 510,818 6.000 % N/A N/A $ 670,448 7.875 % Customers Bank $ 1,054,869 12.393 % $ 510,722 6.000 % $ 680,963 8.000 % $ 670,323 7.875 % Total capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,080,245 12.688 % $ 681,090 8.000 % N/A N/A $ 840,721 9.875 % Customers Bank $ 1,204,825 14.154 % $ 680,963 8.000 % $ 851,204 10.000 % $ 840,563 9.875 % Tier 1 capital (to average assets) Customers Bancorp, Inc. $ 958,418 8.913 % $ 430,099 4.000 % N/A N/A $ 430,099 4.000 % Customers Bank $ 1,054,869 9.814 % $ 429,939 4.000 % $ 537,423 5.000 % $ 429,939 4.000 % As of December 31, 2017: Common equity Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 689,494 8.805 % $ 352,368 4.500 % N/A N/A $ 450,248 5.750 % Customers Bank $ 1,023,564 13.081 % $ 352,122 4.500 % $ 508,621 6.500 % $ 449,934 5.750 % Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 906,963 11.583 % $ 469,824 6.000 % N/A N/A $ 567,704 7.250 % Customers Bank $ 1,023,564 13.081 % $ 469,496 6.000 % $ 625,994 8.000 % $ 567,307 7.250 % Total capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,021,601 13.047 % $ 626,432 8.000 % N/A N/A $ 724,313 9.250 % Customers Bank $ 1,170,666 14.961 % $ 625,994 8.000 % $ 782,493 10.000 % $ 723,806 9.250 % Tier 1 capital (to average assets) Customers Bancorp, Inc. $ 906,963 8.937 % $ 405,949 4.000 % N/A N/A $ 405,949 4.000 % Customers Bank $ 1,023,564 10.092 % $ 405,701 4.000 % $ 507,126 5.000 % $ 405,701 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 is being phased in over four years beginning on January 1, 2016, with a maximum buffer of 0.625% of risk weighted assets for 2016, 1.25% for 2017, 1.875% for 2018, and 2.5% for 2019 and thereafter. Effective January 1, 2018, 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 6.375% ; (ii) a Tier 1 risk-based capital ratio of 7.875% ; and (iii) a Total risk-based capital ratio of 9.875% . Failure to maintain the required capital conservation buffer will result in limitations on capital distributions and on discretionary bonuses to executive officers.

Disclosures About Fair Value of

Disclosures About Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Disclosures About Fair Value of Financial Instruments	DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - As Restated 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, 2018 and December 31, 2017 : Financial Instruments Recorded at Fair Value on a Recurring Basis Investment securities: The fair values of equity securities and available-for-sale debt securities are determined by obtaining quoted market prices on nationally recognized and foreign securities exchanges (Level 1), 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 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. The carrying amount of investments in FHLB, Federal Reserve Bank, and other restricted stock approximates fair value, and considers the limited marketability of such securities. These assets are classified as Level 2 fair values, based upon the lowest level of input that is significant to the fair value measurements. Loans held for sale - Consumer residential mortgage loans (fair value option): The Bank 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 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 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 25 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 the Bank 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. The Bank 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 Customer’s disclosures and those of other companies may not be meaningful. The estimated fair values of Customers' financial instruments at September 30, 2018 and December 31, 2017 were as follows. Fair Value Measurements at September 30, 2018 Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (amounts in thousands) Assets: Cash and cash equivalents $ 666,034 $ 666,034 $ 666,034 $ — $ — Debt securities, available for sale 667,032 667,032 — 667,032 — Equity securities 1,819 1,819 1,819 — — Loans held for sale 1,383 1,383 — 1,383 — Total loans receivable, net of allowance for loan losses 8,715,536 8,646,346 — 1,516,327 7,130,019 FHLB, Federal Reserve Bank and other restricted stock 74,206 74,206 — 74,206 — Derivatives 22,613 22,613 — 22,491 122 Liabilities: Deposits $ 8,513,714 $ 8,506,804 $ 6,120,233 $ 2,386,571 $ — FHLB advances 835,000 834,968 — 834,968 — Other borrowings 123,779 124,724 — 124,724 — Subordinated debt 108,953 114,400 — 114,400 — Derivatives 15,684 15,684 — 15,684 — Fair Value Measurements at December 31, 2017 Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (amounts in thousands) (as restated) Assets: Cash and cash equivalents $ 146,323 $ 146,323 $ 146,323 $ — $ — Investment securities, available for sale 471,371 471,371 3,352 468,019 — Loans held for sale (as restated) 146,077 146,251 — 1,886 144,365 Total loans receivable, net of allowance for loan losses (as restated) 8,523,651 8,470,171 — 1,793,408 6,676,763 FHLB, Federal Reserve Bank and other restricted stock 105,918 105,918 — 105,918 — Derivatives 9,752 9,752 — 9,692 60 Liabilities: Deposits $ 6,800,142 $ 6,796,095 $ 4,894,449 $ 1,901,646 $ — Federal funds purchased 155,000 155,000 155,000 — — FHLB advances 1,611,860 1,611,603 881,860 729,743 — Other borrowings 186,497 193,557 65,072 128,485 — Subordinated debt 108,880 115,775 — 115,775 — Derivatives 10,074 10,074 — 10,074 — 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, 2018 and December 31, 2017 were as follows: September 30, 2018 Fair Value Measurements at the End of the Reporting Period Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total (amounts in thousands) Measured at Fair Value on a Recurring Basis: Assets Available-for-sale debt securities: Agency-guaranteed residential mortgage-backed securities $ — $ 305,418 $ — $ 305,418 Corporate notes — 361,614 — 361,614 Equity securities 1,819 — — 1,819 Derivatives — 22,491 122 22,613 Loans held for sale – fair value option — 1,383 — 1,383 Loans receivable, mortgage warehouse - fair value option — 1,516,327 — 1,516,327 Total assets - recurring fair value measurements $ 1,819 $ 2,207,233 $ 122 $ 2,209,174 Liabilities Derivatives $ — $ 15,684 $ — $ 15,684 Measured at Fair Value on a Nonrecurring Basis: Assets Impaired loans, net of reserves of $1,771 $ — $ — $ 7,295 $ 7,295 Other real estate owned — — 1,078 1,078 Total assets - nonrecurring fair value measurements $ — $ — $ 8,373 $ 8,373 December 31, 2017 Fair Value Measurements at the End of the Reporting Period Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total (amounts in thousands) (as restated) Measured at Fair Value on a Recurring Basis: Assets Available-for-sale securities: Agency-guaranteed residential mortgage-backed securities $ — $ 183,458 $ — $ 183,458 Agency-guaranteed commercial real estate mortgage-backed securities — 238,472 — 238,472 Corporate notes — 46,089 — 46,089 Equity securities 3,352 — — 3,352 Derivatives — 9,692 60 9,752 Loans held for sale – fair value option (as restated) — 1,886 144,365 146,251 Loans receivable, mortgage warehouse - fair value option (as restated) — 1,793,408 — 1,793,408 Total assets - recurring fair value measurements $ 3,352 $ 2,273,005 $ 144,425 $ 2,420,782 Liabilities Derivatives $ — $ 10,074 $ — $ 10,074 Measured at Fair Value on a Nonrecurring Basis: Assets Impaired loans, net of reserves of $1,451 $ — $ — $ 13,902 $ 13,902 Other real estate owned — — 1,449 1,449 Total assets - nonrecurring fair value measurements $ — $ — $ 15,351 $ 15,351 The changes in Level 3 assets measured at fair value on a recurring basis for the three and nine months ended September 30, 2018 and 2017 are summarized in the tables below. Additional information about residential mortgage loan commitments can be found in NOTE 10 - DERIVATIVES INSTRUMENTS AND HEDGING ACTIVITIES. Residential Mortgage Loan Commitments Three Months Ended September 30, 2018 2017 (amounts in thousands) Balance at June 30 $ 133 $ 102 Issuances 122 103 Settlements (133 ) (102 ) Balance at September 30 $ 122 $ 103 Residential Mortgage Loan Commitments Nine Months Ended September 30, 2018 2017 (amounts in thousands) Balance at December 31 $ 60 $ 45 Issuances 338 300 Settlements (276 ) (242 ) Balance at September 30 $ 122 $ 103 There were no transfers between levels during the three and nine months ended September 30, 2018 and 2017 . The following table summarizes financial assets and financial liabilities measured at fair value as of September 30, 2018 and December 31, 2017 on a recurring and nonrecurring basis for which Customers utilized Level 3 inputs to measure fair value. The unobservable Level 3 inputs noted below contain a level of uncertainty that may differ from what is realized in an immediate settlement of the assets. Therefore, Customers may realize a value higher or lower than the current estimated fair value of the assets. Quantitative Information about Level 3 Fair Value Measurements September 30, 2018 Fair Value Estimate Valuation Technique Unobservable Input Range (Weighted Average) (amounts in thousands) Impaired loans - Real Estate $ 5,211 Collateral appraisal (1) Liquidation expenses (2) 8% - 8% Impaired loans - C&I 2,084 Business asset valuation (3) Business asset valuation adjustments (4) 6% - 63% Other real estate owned 1,078 Collateral appraisal (1) Liquidation expenses (2) 8% - 10% Residential mortgage loan commitments 122 Adjusted market bid Pull-through rate 90% - 90% Quantitative Information about Level 3 Fair Value Measurements December 31, 2017 Fair Value Estimate Valuation Technique Unobservable Input Range (Weighted Average) (amounts in thousands) Impaired loans $ 13,902 Collateral appraisal (1) Liquidation expenses (2) 8% - 8% Other real estate owned 1,449 Collateral appraisal (1) Liquidation expenses (2) 8% - 8% Residential mortgage loan commitments 60 Adjusted market bid Pull-through rate 90% - 90% (1) Obtained from approved independent appraisers. Appraisals are current and in compliance with credit policy. The Bank 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.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	9 Months Ended
	Sep. 30, 2018
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 is recorded in accumulated other comprehensive income and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. To date, such derivatives were used to hedge the variable cash flows associated with the forecasted issuances of debt. 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 accumulated other comprehensive income are reclassified immediately into earnings and any subsequent changes in the fair value of such derivatives are recognized directly in earnings. During the three months ended September 30, 2018, Customers recognized gains of $2.8 million in other non-interest income on discontinued cash flow hedge accounting for three interest rate swaps with notional amounts totaling $500 million . Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are made on Customers' variable-rate debt. Customers expects to reclassify $1.0 million from accumulated other comprehensive income as a reduction to interest expense during the next 12 months. Customers is hedging its exposure to the variability in future cash flows for forecasted transactions over a maximum period of 33 months (excluding forecasted transactions related to the payment of variable interest on existing financial instruments). At September 30, 2018 , Customers had eight outstanding interest rate derivatives with notional amounts totaling $835.0 million that were designated as cash flow hedges of interest rate risk. At December 31, 2017 , Customers had nine outstanding interest rate derivatives with notional amounts totaling $550.0 million that were designated as cash flow hedges of interest rate risk. The outstanding cash flow hedges at September 30, 2018 expire between October 2018 and July 2021. 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, 2018 , Customers had 98 interest rate swaps with an aggregate notional amount of $956.8 million related to this program. At December 31, 2017 , Customers had 76 interest rate swaps with an aggregate notional amount of $800.5 million related to this program. Customers enters into residential mortgage loan commitments in connection with its consumer mortgage banking activities to fund mortgage loans at specified rates and times in the future. These commitments are short-term in nature and generally expire in 30 to 60 days. The residential mortgage loan commitments that relate to the origination of mortgage loans that will be held for sale are considered derivative instruments under the applicable accounting guidance and are reported at fair value, with changes in fair value recorded directly in earnings. At September 30, 2018 and December 31, 2017 , Customers had an outstanding notional balance of residential mortgage loan commitments of $6.1 million and $2.7 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, 2018 and December 31, 2017 , Customers had outstanding notional balances of credit derivatives of $95.5 million and $80.5 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, 2018 and December 31, 2017 . September 30, 2018 Derivative Assets Derivative Liabilities Balance Sheet Location Fair Value Balance Sheet Location Fair Value (amounts in thousands) Derivatives designated as cash flow hedges: Interest rate swaps Other assets $ 3,859 Other liabilities $ — Total $ 3,859 $ — Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 18,596 Other liabilities $ 15,653 Credit contracts Other assets 36 Other liabilities 31 Residential mortgage loan commitments Other assets 122 Other liabilities — Total $ 18,754 $ 15,684 December 31, 2017 Derivative Assets Derivative Liabilities Balance Sheet Balance Sheet Location Fair Value Location Fair Value (amounts in thousands) Derivatives designated as cash flow hedges: Interest rate swaps Other assets $ 816 Other liabilities $ 1,140 Total $ 816 $ 1,140 Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 8,776 Other liabilities $ 8,897 Credit contracts Other assets 100 Other liabilities 37 Residential mortgage loan commitments Other assets 60 Other liabilities — Total $ 8,936 $ 8,934 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, 2018 and 2017 . Three Months Ended September 30, 2018 Income Statement Location Amount of Income (Loss) Recognized in Earnings (amounts in thousands) 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 Three Months Ended September 30, 2017 Income Statement Location Amount of Income (Loss) Recognized in Earnings (amounts in thousands) Derivatives not designated as hedging instruments: Interest rate swaps Other non-interest income $ 91 Credit contracts Other non-interest income (6 ) Residential mortgage loan commitments Mortgage banking income 1 Total $ 86 Nine Months Ended September 30, 2018 Income Statement Location Amount of Income Recognized in Earnings (amounts in thousands) 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 Nine Months Ended September 30, 2017 Income Statement Location Amount of Income (Loss) Recognized in Earnings (amounts in thousands) Derivatives not designated as hedging instruments: Interest rate swaps Other non-interest income $ 429 Credit contracts Other non-interest income (5 ) Residential mortgage loan commitments Mortgage banking income 58 Total $ 482 Three Months Ended September 30, 2018 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 (amounts in thousands) Derivatives in cash flow hedging relationships: Interest rate swaps $ 3,006 Interest expense $ (303 ) Other non-interest income (2) 2,822 Total $ 2,519 Three Months Ended September 30, 2017 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 (amounts in thousands) Derivatives in cash flow hedging relationships: Interest rate swaps $ 104 Interest expense $ (572 ) Nine Months Ended September 30, 2018 Amount of Gain (Loss) Location of Gain (Loss) Amount of Gain (Loss) (amounts in thousands) Derivative in cash flow hedging relationships: Interest rate swaps $ 5,055 Interest expense $ (175 ) Other non-interest income (2) 2,822 Total $ 2,647 Nine Months Ended September 30, 2017 Amount of Gain (Loss) Location of Gain (Loss) Amount of Gain (Loss) (amounts in thousands) Derivative in cash flow hedging relationships: Interest rate swaps $ (115 ) Interest expense $ (2,166 ) (1) Amounts presented are net of taxes. See NOTE 4 - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) for 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. Credit-risk-related Contingent Features By entering into derivative contracts, Customers is exposed to credit risk. The credit risk associated with derivatives executed with customers is the same as that involved in extending the related loans and is subject to the same standard credit policies. To mitigate the credit-risk exposure to major derivative dealer counterparties, Customers only enters into agreements with those counterparties that maintain credit ratings of high quality. Agreements with major derivative dealer counterparties contain provisions whereby default on any of Customers' indebtedness would be considered a default on its derivative obligations. Customers also has entered into agreements that contain provisions under which the counterparty could require Customers to settle its obligations if Customers fails to maintain its status as a well/adequately capitalized institution. As of September 30, 2018 , all derivatives with major derivative dealer counterparties were in a net asset position. Disclosures about Offsetting Assets and Liabilities 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, 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 Net Amount Financial Instruments Cash Collateral Received (amounts in thousands) Description Interest rate swap derivatives with institutional counterparties $ 20,688 $ — $ 20,688 $ — $ 19,330 $ 1,358 Offsetting of Financial Liabilities and Derivative Liabilities At September 30, 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 Financial Instruments Cash Collateral Pledged Net Amount (amounts in thousands) Description Interest rate swap derivatives with institutional counterparties $ 1,924 $ — $ 1,924 $ — $ 2 $ 1,922 Offsetting of Financial Assets and Derivative Assets At December 31, 2017 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 Net Amount Financial Instruments Cash Collateral Received (amounts in thousands) Description Interest rate swap derivatives with institutional counterparties $ 5,930 $ — $ 5,930 $ — $ 5,070 $ 860 Offsetting of Financial Liabilities and Derivative Liabilities At December 31, 2017 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 Net Amount Financial Instruments Cash Collateral Pledged (amounts in thousands) Description Interest rate swap derivatives with institutional counterparties $ 5,058 $ — $ 5,058 $ — $ 4,872 $ 186

Business Segments

Business Segments	9 Months Ended
	Sep. 30, 2018
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 - Community 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 Community Business Banking segment is delivered predominately to commercial customers in Southeastern Pennsylvania, New York, New Jersey, Massachusetts, Rhode Island, New Hampshire, Washington D.C., 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, and commercial mortgage companies. Revenues are generated primarily through net interest income (the difference between interest earned on loans, 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 bank owned life insurance. The BankMobile segment provides state-of-the-art high-tech digital banking and disbursement services to consumers, students, and the "under banked" nationwide. BankMobile is a full-service 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 interchange and card revenue, deposit and wire transfer fees and university fees. The majority of revenue and expenses for BankMobile are related to the segment's operation of the ongoing business acquired through the Disbursement business acquisition. The following tables present the operating results for Customers' reportable business segments for the three and nine month periods ended September 30, 2018 and 2017 . The segment financial results include directly attributable revenues and expenses. Corporate overhead costs were assigned to the Community Business Banking segment as those expenses were expected to continue following the planned spin-off of BankMobile. Similarly, the preferred stock dividends have been allocated in their entirety to the Community Business Banking segment. The tax benefit assigned to BankMobile was based on an estimated effective tax rate of 24.57% for 2018 and 37.25% for 2017 , respectively. Please refer to NOTE 13 - SUBSEQUENT EVENTS for more information on the spin-off of BankMobile. Three Months Ended September 30, 2018 (amounts in thousands) Community 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 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 Three Months Ended September 30, 2017 (amounts in thousands) Community Business Banking BankMobile Consolidated Interest income (1) $ 95,585 $ 2,700 $ 98,285 Interest expense 30,250 16 30,266 Net interest income 65,335 2,684 68,019 Provision for loan losses 1,874 478 2,352 Non-interest income 4,190 13,836 18,026 Non-interest expense 33,990 27,050 61,040 Income (loss) before income tax expense (benefit) 33,661 (11,008 ) 22,653 Income tax expense (benefit) 18,999 (4,100 ) 14,899 Net income (loss) 14,662 (6,908 ) 7,754 Preferred stock dividends 3,615 — 3,615 Net income (loss) available to common shareholders $ 11,047 $ (6,908 ) $ 4,139 (1) Amounts reported include funds transfer pricing of $3.9 million and $2.7 million for the three months ended September 30, 2018 and 2017 , respectively, credited to BankMobile for the value provided to the Community Business Banking segment for the use of low/no cost deposits. Nine Months Ended September 30, 2018 (amounts in thousands) Community Business Banking BankMobile Consolidated Interest income (2) $ 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 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 $ 10,542,175 $ 74,929 $ 10,617,104 Total deposits $ 7,781,225 $ 732,489 $ 8,513,714 Total non-deposit liabilities $ 1,134,251 $ 14,327 $ 1,148,578 Nine Months Ended September 30, 2017 (amounts in thousands) Community Business Banking BankMobile Consolidated Interest income (2) $ 265,524 $ 9,708 $ 275,232 Interest expense 76,134 55 76,189 Net interest income 189,390 9,653 199,043 Provision for loan losses 5,459 478 5,937 Non-interest income 16,587 42,583 59,170 Non-interest expense 94,704 66,114 160,818 Income (loss) before income tax expense (benefit) 105,814 (14,356 ) 91,458 Income tax expense (benefit) 39,584 (5,348 ) 34,236 Net income (loss) 66,230 (9,008 ) 57,222 Preferred stock dividends 10,844 — 10,844 Net income (loss) available to common shareholders $ 55,386 $ (9,008 ) $ 46,378 As of September 30, 2017 Goodwill and other intangibles $ 3,632 $ 12,972 $ 16,604 Total assets $ 10,405,452 $ 66,377 $ 10,471,829 Total deposits $ 6,815,994 $ 781,082 $ 7,597,076 Total non-deposit liabilities $ 1,947,213 $ 16,898 $ 1,964,111 (2) Amounts reported include funds transfer pricing of $11.8 million and $9.7 million for the nine months ended September 30, 2018 and 2017 , respectively, credited to BankMobile for the value provided to the Community Business Banking segment for the use of low/no cost deposits.

Non-Interest Revenues

Non-Interest Revenues	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Non-Interest Revenues	NON-INTEREST REVENUES As provided in NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION, Customers' adoption of ASU 2014-09, Revenue from Contracts with Customers (ASC 606), on January 1, 2018, did not have a significant impact to Customers' consolidated financial statements and, as such, a cumulative effect adjustment to beginning retained earnings was not necessary. Customers determined that its debit and prepaid card interchange income, previously reported on a gross basis for periods prior to adoption, will need to be presented on a net basis under this ASU. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606, while prior period amounts were not adjusted and continue to be reported in accordance with the previous accounting guidance under ASC 605. Debit and prepaid card interchange expense for the three months ended September 30, 2018 and 2017 amounted to $1.2 million and $1.2 million , respectively. Debit and prepaid card interchange expense for the nine months ended September 30, 2018 and 2017 amounted to $3.9 million and $4.4 million , respectively. In addition, as part of the enhanced disclosure requirements under the new guidance, Customers is presenting disaggregated revenue by business segment, nature of the revenue stream, and the pattern or timing of revenue recognition. The accounting treatment for interest-related revenues is covered under ASC 310 and is out of the scope of ASC 606. The following tables present Customers' non-interest revenues affected by ASC 606 by business segment for the three and nine months ended September 30, 2018 and 2017 : Three Months Ended September 30, 2018 (amounts in thousands) Community Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and Card Revenue $ 181 $ 6,903 $ 7,084 Deposit Fees 311 1,691 2,002 University Fees - Card and Disbursement Fees — 261 261 Total revenue recognized at point in time 492 8,855 9,347 Revenue recognized over time: University Fees - Subscription Revenue — 950 950 Total revenue recognized over time — 950 950 Total revenue from contracts with customers $ 492 $ 9,805 $ 10,297 Three Months Ended September 30, 2017 (amounts in thousands) Community Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and Card Revenue $ 215 $ 9,355 $ 9,570 Deposit Fees 321 2,338 2,659 University Fees - Card and Disbursement Fees — 283 283 Total revenue recognized at point in time 536 11,976 12,512 Revenue recognized over time: University Fees - Subscription Revenue — 829 829 Total revenue recognized over time — 829 829 Total revenue from contracts with customers $ 536 $ 12,805 $ 13,341 Nine Months Ended September 30, 2018 (amounts in thousands) Community Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and Card Revenue $ 588 $ 22,539 $ 23,127 Deposit Fees 892 4,834 5,726 University Fees - Card and Disbursement Fees — 772 772 Total revenue recognized at point in time 1,480 28,145 29,625 Revenue recognized over time: University Fees - Subscription Revenue — 2,727 2,727 Total revenue recognized over time — 2,727 2,727 Total revenue from contracts with customers $ 1,480 $ 30,872 $ 32,352 Nine Months Ended September 30, 2017 (amounts in thousands) Community Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and Card Revenue $ 544 $ 31,185 $ 31,729 Deposit Fees 902 7,016 7,918 University Fees - Card and Disbursement Fees — 878 878 Total revenue recognized at point in time 1,446 39,079 40,525 Revenue recognized over time: University Fees - Subscription Revenue — 2,408 2,408 Total revenue recognized over time — 2,408 2,408 Total revenue from contracts with customers $ 1,446 $ 41,487 $ 42,933 The following is a discussion of revenues within the scope of ASC 606: Card revenue Card revenue primarily relates to debit and prepaid card fees earned from interchange and ATM fees. Interchange fees are earned whenever Customers' issued debit and prepaid cards are processed through card payment networks. Interchange fees are recognized concurrent with the processing of the debit or prepaid card transaction. Deposit fees Deposit fees relate to service charges on deposit accounts for transaction-based, account maintenance and overdraft services. Transaction-based fees, which include services such as stop-payment charges, wire transfer fees, cashier and money order fees are recognized at the time the transaction is executed. Account maintenance fees, which relate primarily to monthly maintenance and account analysis fees, are earned on a monthly basis representing the period over which Customers satisfies its performance obligation. Overdraft fees are recognized at the point in time that the overdraft occurs. Service charges on deposit accounts are withdrawn from the depositor's account balance. The revenues recognized at a point in time primarily consist of contracts with no specified terms, but which may be terminated at any time by the customer without penalty. Due to the transactional nature and indefinite term of these agreements, there were no related contract balances that were recorded for these revenue streams on Customers' consolidated balance sheets as of September 30, 2018 and December 31, 2017. University fees University fees represent revenues from higher education institutions and are generated from fees charged for the services provided. For higher education institution clients, Customers, through BankMobile, facilitates the distribution of financial aid and other refunds to students, while simultaneously enhancing the ability of the higher education institutions to comply with the federal regulations applicable to financial aid transactions. For these services, higher education institution clients are charged an annual subscription fee and/or per-transaction fee (e.g., new card or card replacement fees) for certain transactions. The annual subscription fee is recognized ratably over the period of service and the transaction fees are recognized when the transaction is completed. BankMobile also enters into long-term (generally three - or five -year initial term) contracts with higher education institutions to provide these refund management disbursement services. Deferred revenue consists of amounts billed to or received from clients prior to the performance of services. The deferred revenues are earned over the service period on a straight-line basis. As of September 30, 2018 and December 31, 2017, Customers recorded deferred revenue of $2.8 million and $2.0 million , respectively, related to these university subscription contracts. At September 30, 2018 and December 31, 2017, Customers had accounts receivable of $1.5 million and $1.1 million , respectively, related to the university fee arrangements.

Subsequent Event

Subsequent Event	9 Months Ended
	Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Event	SUBSEQUENT EVENTS On October 18, 2018, the Amended and Restated Purchase and Assumption Agreement and Plan of Merger (the "Agreement"), dated November 17, 2017 by and among Customers Bancorp, its subsidiary, Customers Bank, and Customers Bank's subsidiary, BankMobile Technologies, Inc. ("BMT") and Flagship Community Bank ("Flagship"), was terminated. In connection with the termination of the Agreement, Customers Bancorp recognized merger and acquisition related expenses of $2.7 million during third quarter 2018 for amounts that, under the terms of the Agreement, would have been reimbursed by Flagship only upon completion of the spin-off and merger.

Significant Accounting Polici_2

Significant Accounting Policies and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The interim unaudited consolidated financial statements of Customers 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 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. On November 13, 2018, Customers Bancorp filed with the SEC a report on Form 8-K advising that its 2017, 2016, and 2015 audited consolidated financial statements and its interim unaudited consolidated financial statements as of and for the three and six month periods ended March 31, 2018 and 2017 and June 30, 2018 and 2017, respectively, should no longer be relied upon because of incorrect classifications of the cash flows used in and provided by its commercial mortgage warehouse lending activities between operating and investing activities on the consolidated statements of cash flows because the related loan balances were incorrectly classified as held for sale instead of held for investment (i.e., loans receivable) on its consolidated balance sheets. These misclassifications have no impact on total cash balances, total loans, total assets, the allowance for loan losses, total capital, regulatory capital ratios, net interest income, net interest margin, net income to shareholders, basic or diluted earnings per share, return on average assets, return on average equity, the efficiency ratio, asset quality ratios or other key performance metrics, including non-GAAP performance metrics, that Customers routinely discusses with analysts and investors. The December 31, 2017 consolidated balance sheet presented in this report has been derived from Customers' audited 2017 consolidated financial statements, restated to correct the classification of the mortgage warehouse loans as held for investment instead of held for sale. Because of a fair value option election that Customers made on July 1, 2012 that continues today, these loans are, and will continue to be, reported at their fair value and accordingly do not have an allowance for loan losses. 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 2017 consolidated financial statements of Customers included in its Annual Report on Form 10-K for the year ended December 31, 2017 filed with the SEC on February 23, 2018 (the "2017 Form 10-K") except to the extent they are affected by the restatement. That 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; Purchased Loans; Allowance for Loan Losses; Goodwill and Other Intangible Assets; Investments in FHLB, Federal Reserve Bank, and Other Restricted Stock; Other Real Estate Owned; Bank-Owned Life Insurance; Bank Premises and Equipment; Operating Leases; Treasury Stock; Income Taxes; Share-Based Compensation; Transfer of Financial Assets; Business Segments; Derivative Instruments and Hedging; Comprehensive Income (Loss); Earnings per Share; and Loss Contingencies. Results for interim periods are not necessarily indicative of those that may be expected for the fiscal year or any other period.
Reclassifications	There have been no material changes to Customers' significant accounting policies as disclosed in Customers' 2017 Form 10-K, except for the accounting policies related to Cash and Cash Equivalents and Statements of Cash Flows and Loans Held for Sale and Loans at Fair Value as described below. Restatement of Previously Issued Financial Statements In November 2018, Customers determined that the cash flow activities associated with its commercial mortgage warehouse lending transactions should have been reported as investing activities in its consolidated statements of cash flows because the related loan balances should have been classified as held for investment (i.e., loans receivable). Effective with the filing of this quarterly report on Form 10-Q, Customers changed its accounting policies such that commercial mortgage warehouse loans will be classified as held for investment and presented them as "Loans receivable, mortgage warehouse, at fair value" on its consolidated balance sheets. The cash flow activities associated with these commercial mortgage warehouse lending activities will be reported as investing activities in the consolidated statements of cash flows. The following tables set forth the effects of the correction on the consolidated balance sheet as of December 31, 2017 and the consolidated statements of cash flows for the nine months ended September 30, 2017. December 31, 2017 Consolidated Balance Sheet As Previously Reported Adjustments As Restated (amounts in thousands) Loans held for sale $ 1,939,485 $ (1,793,408 ) $ 146,077 Loans receivable, mortgage warehouse, at fair value — 1,793,408 1,793,408 Total loans receivable, net of allowance for loan losses 6,730,243 1,793,408 8,523,651 For the Nine Months Ended September 30, 2017 Consolidated Statements of Cash Flows As Previously Reported Adjustments As Restated (amounts in thousands) Origination of loans held for sale $ (22,770,726 ) $ 22,738,383 $ (32,343 ) Proceeds from the sale of loans held for sale 22,925,668 (22,893,950 ) 31,718 Net cash provided by operating activities 185,889 (155,567 ) 30,322 Origination of mortgage warehouse loans — (22,738,383 ) (22,738,383 ) Proceeds from repayments of mortgage warehouse loans — 22,893,950 22,893,950 Net cash used in investing activities (1,267,428 ) 155,567 (1,111,861 ) In addition, the December 31, 2017 comparative balances disclosed in NOTE 6 - LOANS HELD FOR SALE, NOTE 7 - LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES, and NOTE 9 - DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS, and the comparative balances reported throughout Management's Discussion and Analysis of Financial Condition and Results of Operations included elsewhere in this quarterly report on Form 10-Q, have been restated to present the corrected classification.
Recently Issued Accounting Standards	Presented below are recently issued accounting standards that Customers has adopted as well as those that the Financial Accounting Standards Board (“FASB”) has issued but are not yet effective. Recently Issued Accounting Standards Accounting Standards Adopted in 2018 Standard Summary of guidance Effects on Financial Statements ASU 2018-13, Fair Value (Topic 820): Changes to the Disclosure Requirements for Fair Value Measurement Issued August 2018 Ÿ Eliminates disclosure requirements for the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for timing of transfers between levels, and the valuation processes for Level 3 fair value measurements. Ÿ Clarifies that the measurement uncertainty disclosure is to communicate information about the uncertainty in measurement as of the reporting date. Ÿ Expands disclosures to include unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. Ÿ Certain amendments are applied prospectively and retrospectively. Ÿ Effective for fiscal year beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption permitted. Ÿ Customers early adopted on September 30, 2018. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2018-03, Technical Corrections and Improvements to Financial Instruments-Overall (Subtopic 825-10) Issued February 2018 Ÿ Clarifies certain aspects of the guidance issued in ASU 2016-01 including: the ability to irrevocably elect to change the measurement approach for equity securities measured using the practical expedient (at cost plus or minus observable transactions less impairment) to a fair value method in accordance with ASC 820, Fair Value Measurement. Ÿ Provides clarification that if an observable transaction occurs for such securities, the adjustment is as of the observable transaction date. Ÿ Effective July 1, 2018 on a prospective basis with early adoption permitted. Ÿ Customers adopted on July 1, 2018 on a prospective basis. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements as Customers currently does not have any significant equity securities without readily determinable fair values. ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income/(Loss) ("AOCI") Issued February 2018 Ÿ Allows for reclassification from AOCI to retained earnings for stranded tax effects resulting from the 2017 Tax Cut and Jobs Act. Ÿ Requires an entity to disclose whether it has elected to reclassify stranded tax effects from AOCI to retained earnings and its policy for releasing income tax effects from AOCI. Ÿ Effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted. Ÿ Customers early adopted on January 1, 2018. Ÿ The adoption resulted in the reclassification of $0.3 million in stranded tax effects in Customers' AOCI related to net unrealized losses on its available-for-sale debt securities and cash flow hedges. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. Accounting Standards Adopted in 2018 (continued) Standard Summary of guidance Effects on Financial Statements ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities Issued August 2017 Ÿ Aligns the entity's risk management activities and financial reporting for hedging relationships. Ÿ Amends the existing hedge accounting model and expands an entity's ability to hedge nonfinancial and financial risk components and reduce complexity in fair value hedges of interest-rate risk. Ÿ Eliminates the requirement to separately measure and report hedge ineffectiveness and generally requires the entire change in the fair value of a hedging instrument to be presented in the same income statement line item as the hedge item. Ÿ Changes certain documentation and assessment requirements and modifies the accounting for components excluded from the assessment of hedge effectiveness. Ÿ Effective for fiscal years beginning after December 15, 2018. Early adoption is permitted. Ÿ In October 2018, the FASB issued ASU 2018-16 “Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate ("SOFR") Overnight Index Swap ("OIS") Rate as a Benchmark Interest Rate for Hedge Accounting Purposes," which permits the OIS rate based on SOFR as a U.S. benchmark interest rate for hedge accounting purposes. Ÿ Customers early adopted on January 1, 2018. Ÿ With the early adoption, Customers is able to pursue additional hedging strategies including the ability to apply fair value hedge accounting to a specified pool of assets by excluding the portion of the hedged items related to prepayments, defaults and other events. Ÿ These additional hedging strategies will allow Customers to better align the accounting and financial reporting of its hedging activities with the economic objectives thereby reducing the earnings volatility resulting from these hedging activities. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. Customers has updated its disclosures in NOTE 10 - DERIVATIVES INSTRUMENTS AND HEDGING ACTIVITIES as a result of early adopting this ASU. ASU 2017-09, Compensation - Stock Compensation: Scope of Modification Accounting Issued May 2017 Ÿ Clarifies when to account for a change to the terms or conditions of a share-based-payment award as a modification in ASC 718. Ÿ Provides that modification accounting is only required if the fair value, vesting conditions, or the classification of the award as equity or a liability changes as a result of the change in terms or conditions. Ÿ Effective January 1, 2018 on a prospective basis for awards modified on or after the adoption date. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2017-05, Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets Issued February 2017 Ÿ Clarifies the scope and application of the accounting guidance on the sale of nonfinancial assets to non-customers, including partial sales. Ÿ Clarifies that if substantially all of the fair value of the assets that are promised to the counterparty in a contract is concentrated in nonfinancial assets, then all of the financial assets promised to the counterparty are in substance nonfinancial assets within the scope of Subtopic 610-20. Ÿ Effective January 1, 2018 on a prospective basis. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2017-01, Clarifying the Definition of a Business Issued January 2017 Ÿ Narrows the definition of a business and clarifies that to be considered a business, the fair value of gross assets acquired (or disposed of) should not be concentrated in a single identifiable asset or a group of similar identifiable assets. Ÿ Also clarifies that in order to be considered a business, an acquisition would have to include an input and a substantive process that together will significantly contribute to the ability to create an output. Ÿ Effective January 1, 2018 on a prospective basis. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2016-18, Statement of Cash Flows: Restricted Cash Issued November 2016 Ÿ Requires inclusion of restricted cash in cash and cash equivalents when reconciling the beginning-of-period total amounts shown on the statement of cash flows. Ÿ Effective January 1, 2018 and requires retrospective application to all periods presented. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption did not result in any significant impact on Customers' financial condition, results of operations and consolidated financial statements, including its consolidated statement of cash flows, and therefore did not result in a retrospective application. Accounting Standards Adopted in 2018 (continued) Standard Summary of guidance Effects on Financial Statements ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory Issued October 2016 Ÿ Requires an entity to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. Ÿ Eliminates the current exception for all intra-entity transfers of an asset other than inventory that requires deferral of the tax effects until the asset is sold to a third party or otherwise recovered through use. Ÿ Effective January 1, 2018 on a modified retrospective basis. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption of the ASU did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. ASU 2016-15, Statement of Cash Flow: Classification of Certain Cash Receipts and Cash Payments Issued August 2016 Ÿ Aims to reduce the existing diversity in practice with regards to the classification of the following specific items in the statement of cash flows: 1. Cash payments for debt prepayment or debt extinguishment costs should be classified as a financing activity. 2. Cash paid by an acquirer soon after a business combination for the settlement of a contingent consideration liability recognized at the acquisition date will be classified in investing activities. 3. Cash proceeds received from the settlement of insurance claims will be classified on the basis of the related insurance coverage (i.e., the nature of the loss). 4. Cash proceeds received from the settlement of bank-owned life insurance policies will be classified as cash inflows from investing activities. 5. A transferor's beneficial interest obtained in a securitization of financial assets will be disclosed as a non-cash activity, and cash received from beneficial interests will be classified in investing activities. Ÿ Effective January 1, 2018 and requires retrospective application to all periods presented. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption did not result in any significant impact on Customers' financial condition, results of operations and consolidated financial statements, including its consolidated statement of cash flows, and therefore it did not result in a retrospective application. ASU 2016-04, Liabilities - Extinguishment of Liabilities: Recognition of Breakage for Certain Prepaid Stored-Value Products Issued March 2016 Ÿ Requires issuers of prepaid stored-value products (such as gift cards, telecommunication cards, and traveler's checks), to derecognize the financial liability related to those products for breakage. Breakage is the value of prepaid stored-value products that is not redeemed by consumers for goods, services or cash. Ÿ The amendments in this ASU provide a narrow scope exception to the guidance in Subtopic 405-20 to require that breakage be accounted for consistent with the breakage guidance in Topic 606. Ÿ Effective January 1, 2018 on a modified retrospective basis. Ÿ Customers adopted on January 1, 2018. Ÿ The adoption of this ASU did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. Accounting Standards Adopted in 2018 (continued) Standard Summary of guidance Effects on Financial Statements ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities Issued January 2016 Ÿ Requires equity investments with certain exceptions to be measured at fair value with changes in fair value recognized in net income. Ÿ Simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. Ÿ Eliminates the requirement for public entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet. Ÿ Requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. Ÿ Requires an entity to present separately in other comprehensive income the portion of the change in fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. Ÿ Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or in the accompanying notes to the financial statements. Ÿ Clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities. Ÿ Effective January 1, 2018 on a modified retrospective basis. Ÿ Customers adopted on January 1, 2018 using a modified retrospective approach. Ÿ The adoption of this ASU resulted in a cumulative-effect adjustment that resulted in a $1.0 million reduction in AOCI and a corresponding increase in retained earnings for the same amount. Ÿ The $1.0 million represented the net unrealized gain on Customers' investment in Religare equity securities at December 31, 2017, as disclosed in NOTE 5 - INVESTMENT SECURITIES. Ÿ Customers also refined its calculation to determine the fair value of its held-for- investment loan portfolio for disclosure purposes using an exit price notion as part of adopting this ASU. The refined calculation did not have a significant impact on Customers' fair value disclosures. ASU 2014-09, Revenue from Contracts with Customers (Topic 606) Issued May 2014 Ÿ Supersedes the revenue recognition requirements in ASC 605. Ÿ Requires an entity to recognize revenue for the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Ÿ The amendment includes a five-step process to assist an entity in achieving the main principle(s) of revenue recognition under ASC 605. Ÿ Reframed the structure of the indicators of when an entity is acting as an agent and focused on evidence that an entity is acting as the principal or agent in a revenue transaction. Ÿ Requires additional qualitative and quantitative disclosures relating to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Ÿ Effective January 1 , 2018 and can either be applied retrospectively to each prior reporting period presented or as a cumulative effect adjustment as of the date of adoption (modified retrospective approach). Ÿ Customers adopted on January 1, 2018 on a modified retrospective basis. Ÿ Because the ASU does not apply to revenue associated with leases and financial instruments (including loans and securities), Customers concluded that the new guidance did not have a material impact on the elements of its consolidated statements of operations most closely associated with leases and financial instruments (such as interest income, interest expense and securities gains or losses). Ÿ Customers has identified its deposit-related fees, service charges, debit and prepaid card interchange income and university fees to be within the scope of the standard. Ÿ Customers has also completed its review of the related contracts and its evaluation of certain costs related to these revenue streams and determined that its debit and prepaid card interchange income, previously reported on a gross basis for periods prior to adoption, will need to be presented on a net basis under this ASU, as Customers is the agent. Ÿ The adoption of this ASU, did not have a significant impact on Customers' financial condition, results of operations and consolidated financial statements. Additional discussion related to the adoption and the required quantitative and qualitative disclosures are included in NOTE 12 - NON-INTEREST REVENUES. Accounting Standards Issued But Not Yet Adopted 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 Ÿ 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. Ÿ 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. Ÿ Clarifies that existing impairment guidance in Subtopic 350-40 must be applied to the capitalized implementation costs as if they were long-lived assets. Ÿ Applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. Ÿ Effective for fiscal year beginning after December 15, 2019 and interim periods within those fiscal years. Early adoption permitted. Ÿ Customers is currently evaluating the expected impact of this ASU on its 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 Ÿ 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. Ÿ 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. Ÿ 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). Ÿ 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. Ÿ Effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. Ÿ Customers currently does not grant share-based payment awards to non-employees and, accordingly, does not expect the adoption of this ASU to have a significant impact on its financial condition, results of operations and consolidated financial statements; however, Customers will continue to evaluate the potential impact of this ASU through the adoption date.
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. The changes in the fair value of derivatives designated and qualifying as cash flow hedges is recorded in accumulated other comprehensive income and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. To date, such derivatives were used to hedge the variable cash flows associated with the forecasted issuances of debt.

Significant Accounting Polici_3

Significant Accounting Policies and Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Schedule of Error Corrections and Prior Period Adjustments	The following tables set forth the effects of the correction on the consolidated balance sheet as of December 31, 2017 and the consolidated statements of cash flows for the nine months ended September 30, 2017. December 31, 2017 Consolidated Balance Sheet As Previously Reported Adjustments As Restated (amounts in thousands) Loans held for sale $ 1,939,485 $ (1,793,408 ) $ 146,077 Loans receivable, mortgage warehouse, at fair value — 1,793,408 1,793,408 Total loans receivable, net of allowance for loan losses 6,730,243 1,793,408 8,523,651 For the Nine Months Ended September 30, 2017 Consolidated Statements of Cash Flows As Previously Reported Adjustments As Restated (amounts in thousands) Origination of loans held for sale $ (22,770,726 ) $ 22,738,383 $ (32,343 ) Proceeds from the sale of loans held for sale 22,925,668 (22,893,950 ) 31,718 Net cash provided by operating activities 185,889 (155,567 ) 30,322 Origination of mortgage warehouse loans — (22,738,383 ) (22,738,383 ) Proceeds from repayments of mortgage warehouse loans — 22,893,950 22,893,950 Net cash used in investing activities (1,267,428 ) 155,567 (1,111,861 )

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2018
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 2018 2017 2018 2017 (amounts in thousands, except share and per share data) Net income available to common shareholders $ 2,414 $ 4,139 $ 42,989 $ 46,378 Weighted-average number of common shares outstanding - basic 31,671,122 30,739,671 31,554,407 30,597,314 Share-based compensation plans 601,622 1,754,480 750,573 2,004,917 Warrants 4,846 18,541 7,475 24,392 Weighted-average number of common shares - diluted 32,277,590 32,512,692 32,312,455 32,626,623 Basic earnings per common share $ 0.08 $ 0.13 $ 1.36 $ 1.52 Diluted earnings per common share $ 0.07 $ 0.13 $ 1.33 $ 1.42
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 2018 2017 2018 2017 Anti-dilutive securities: Share-based compensation awards 1,787,670 409,225 1,105,287 409,225 Warrants — 52,242 — 52,242 Total anti-dilutive securities 1,787,670 461,467 1,105,287 461,467

Changes in Accumulated Other _2

Changes in Accumulated Other Comprehensive Income (Loss) By Component (Tables)	9 Months Ended
	Sep. 30, 2018
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, 2018 and 2017 . All amounts are presented net of tax. Amounts in parentheses indicate reductions to accumulated other comprehensive income. Three Months Ended September 30, 2018 Available-for-sale debt securities (amounts in thousands) Unrealized Gains (Losses) Foreign Currency Items Total Unrealized Gains (Losses) Unrealized 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 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 securities (amounts in thousands) Unrealized Gains (Losses) Foreign Currency Items Total Unrealized Gains (Losses) 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 reclassification adjustments 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 (loss) (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 loss on sale of investment securities on the consolidated statements of income. During the three and nine months ended September 30, 2018, reclassification amounts of $18.7 million ( $13.8 million net of taxes), respectively, were reported as loss on sale of investment securities on the consolidated statements of income. Reclassification amounts for cash flow hedges are reported as either interest expense on FHLB advances 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 FHLB advances on 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 accumulated other comprehensive income of $1.3 million and a corresponding increase in retained earnings for the same amount. See NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION for more information. Three Months Ended September 30, 2017 (amounts in thousands) Unrealized Gains (Losses) on Available-For-Sale Securities Unrealized Total Balance - June 30, 2017 $ 6,822 $ (1,458 ) $ 5,364 Other comprehensive income (loss) before reclassifications (2,177 ) 104 (2,073 ) Amounts reclassified from accumulated other comprehensive income (loss) to net income (1) (3,263 ) 349 (2,914 ) Net current-period other comprehensive income (loss) (5,440 ) 453 (4,987 ) Balance - September 30, 2017 $ 1,382 $ (1,005 ) $ 377 Nine Months Ended September 30, 2017 (amounts in thousands) Unrealized Gains (Losses) on Available-For-Sale Securities Unrealized Total Balance - December 31, 2016 $ (2,681 ) $ (2,211 ) $ (4,892 ) Other comprehensive income (loss) before reclassifications 9,268 (115 ) 9,153 Amounts reclassified from accumulated other comprehensive income (loss) to net income (1) (5,205 ) 1,321 (3,884 ) Net current-period other comprehensive income 4,063 1,206 5,269 Balance - September 30, 2017 $ 1,382 $ (1,005 ) $ 377 (1) Reclassification amounts for available-for-sale debt securities are reported as gain on sale of investment securities on the consolidated statements of income. During the three and nine months ended September 30, 2017, reclassification amounts of $5.3 million ( $3.3 million net of taxes) and $8.5 million ( $5.2 million net of taxes), respectively, 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 on FHLB advances on the consolidated statements of income. During the three and nine months ended September 30, 2017, reclassification amounts of $572 thousand ( $349 thousand net of taxes) and $2.2 million ( $1.3 million net of taxes) were reported as interest expense on FHLB advances on the consolidated statements of income.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2018
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, 2018 and December 31, 2017 are summarized in the tables below: September 30, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (amounts in thousands) Available-for-sale debt securities: Agency-guaranteed residential mortgage-backed securities $ 316,785 $ — $ (11,367 ) $ 305,418 Corporate notes 381,475 347 (20,208 ) 361,614 Available-for-sale debt securities $ 698,260 $ 347 $ (31,575 ) 667,032 Equity securities (1) 1,819 Total investment securities, at fair value $ 668,851 (1) Includes equity securities issued by a foreign entity that are being measured at fair value with changes in fair value recognized directly in earnings effective January 1, 2018 as a result of adopting ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (see NOTE 2 - SIGNIFICANT ACCOUNTING POLICIES AND BASIS OF PRESENTATION for additional information related to the adoption of this new standard). December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (amounts in thousands) Available-for-sale securities: Agency-guaranteed residential mortgage-backed securities $ 186,221 $ 36 $ (2,799 ) $ 183,458 Agency-guaranteed commercial real estate mortgage-backed securities 238,809 432 (769 ) 238,472 Corporate notes (1) 44,959 1,130 — 46,089 Equity securities (2) 2,311 1,041 — 3,352 Total available-for-sale securities, at fair value $ 472,300 $ 2,639 $ (3,568 ) $ 471,371 (1) Includes subordinated debt issued by other bank holding companies. (2) Includes equity securities issued by a foreign entity.
Available-for-sale Securities	The following table presents proceeds from the sale of investment securities and gross gains and gross losses realized on those sales for the three and nine month periods ended September 30, 2018 and 2017 : Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (amounts in thousands) Proceeds from sale of available-for-sale securities $ 476,182 $ 554,540 $ 476,182 $ 670,522 Gross gains $ — $ 5,349 $ — $ 8,532 Gross losses (18,659 ) — (18,659 ) — Net (losses)/gains $ (18,659 ) $ 5,349 $ (18,659 ) $ 8,532
Summary of Available-for-Sale Debt Securities by Stated Maturity	The following table shows debt securities by stated maturity. Debt securities backed by mortgages 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, 2018 Amortized Cost Fair Value (amounts in thousands) Due in one year or less $ — $ — Due after one year through five years — — Due after five years through ten years 229,807 218,904 Due after ten years 151,668 142,710 Agency-guaranteed residential mortgage-backed securities 316,785 305,418 Total debt securities $ 698,260 $ 667,032
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 September 30, 2018 and December 31, 2017 were as follows: September 30, 2018 Less Than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (amounts in thousands) Available-for-sale debt securities: Agency-guaranteed residential mortgage-backed securities $ 305,418 $ (11,367 ) $ — $ — $ 305,418 $ (11,367 ) Corporate notes 321,303 (20,208 ) — — 321,303 (20,208 ) Total $ 626,721 $ (31,575 ) $ — $ — $ 626,721 $ (31,575 ) December 31, 2017 Less Than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (amounts in thousands) Available-for-sale debt securities: Agency-guaranteed residential mortgage-backed securities $ 104,861 $ (656 ) $ 66,579 $ (2,143 ) $ 171,440 $ (2,799 ) Agency-guaranteed commercial real estate mortgage-backed securities 115,970 (740 ) 6,151 (29 ) 122,121 (769 ) Total $ 220,831 $ (1,396 ) $ 72,730 $ (2,172 ) $ 293,561 $ (3,568 )

Loans Held for Sale (Tables)

Loans Held for Sale (Tables)	9 Months Ended
	Sep. 30, 2018
Receivables Held-for-sale [Abstract]
Composition of Loans Held for Sale	The composition of loans held for sale as of September 30, 2018 and December 31, 2017 was as follows: September 30, 2018 December 31, 2017 (amounts in thousands) (As Restated) Commercial loans: Multi-family loans at lower of cost or fair value $ — $ 144,191 Total commercial loans held for sale — 144,191 Consumer loans: Residential mortgage loans, at fair value 1,383 1,886 Loans held for sale $ 1,383 $ 146,077

Loans Receivable and Allowanc_2

Loans Receivable and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2018
Receivables [Abstract]
Schedule of Loans Receivable	The following table presents loans receivable as of September 30, 2018 and December 31, 2017 . September 30, 2018 December 31, 2017 (amounts in thousands) (As Restated) Loans receivable, mortgage warehouse, at fair value $ 1,516,327 $ 1,793,408 Loans receivable: Commercial: Multi-family 3,504,540 3,502,381 Commercial and industrial (including owner occupied commercial real estate) 1,841,704 1,633,818 Commercial real estate non-owner occupied 1,157,849 1,218,719 Construction 95,250 85,393 Total commercial loans receivable 6,599,343 6,440,311 Consumer: Residential real estate 509,853 234,090 Manufactured housing 82,589 90,227 Other 51,210 3,547 Total consumer loans receivable 643,652 327,864 Loans receivable 7,242,995 6,768,175 Deferred (fees)/costs and unamortized (discounts)/premiums, net (3,045 ) 83 Allowance for loan losses (40,741 ) (38,015 ) Total loans receivable, net of allowance for loan losses $ 8,715,536 $ 8,523,651
Loans Receivable by Loan Type and Performance Status	The following tables summarize loans receivable by loan type and performance status as of September 30, 2018 and December 31, 2017 : September 30, 2018 30-89 Days 90 Days Total Past Non- Current (2) Purchased- Total (amounts in thousands) Multi-family $ — $ — $ — $ 1,343 $ 3,501,450 $ 1,747 $ 3,504,540 Commercial and industrial 418 — 418 13,287 1,271,813 572 1,286,090 Commercial real estate owner occupied — — — 1,298 545,647 8,669 555,614 Commercial real estate non-owner occupied — — — 158 1,153,107 4,584 1,157,849 Construction — — — — 95,250 — 95,250 Residential real estate 2,321 — 2,321 5,522 497,211 4,799 509,853 Manufactured housing (5) 3,475 2,300 5,775 1,921 72,777 2,116 82,589 Other consumer 45 — 45 112 50,832 221 51,210 Total $ 6,259 $ 2,300 $ 8,559 $ 23,641 $ 7,188,087 $ 22,708 $ 7,242,995 December 31, 2017 30-89 Days 90 Days Total Past Non- Current (2) Purchased- Total (amounts in thousands) Multi-family $ 4,900 $ — $ 4,900 $ — $ 3,495,600 $ 1,881 $ 3,502,381 Commercial and industrial 103 — 103 17,392 1,130,831 764 1,149,090 Commercial real estate owner occupied 202 — 202 1,453 472,501 10,572 484,728 Commercial real estate non-owner occupied 93 — 93 160 1,213,216 5,250 1,218,719 Construction — — — — 85,393 — 85,393 Residential real estate 7,628 — 7,628 5,420 215,361 5,681 234,090 Manufactured housing (5) 4,028 2,743 6,771 1,959 78,946 2,551 90,227 Other consumer 116 — 116 31 3,184 216 3,547 Total $ 17,070 $ 2,743 $ 19,813 $ 26,415 $ 6,695,032 $ 26,915 $ 6,768,175 (1) Includes past due loans that are accruing interest because collection is considered probable. (2) Loans 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 allowance for loan losses. (5) Manufactured housing loans purchased in 2010 are supported by cash reserves held at the Bank that are used to fund past-due payments when the loan becomes 90 days or more delinquent. Subsequent purchases are subject to varying provisions in the event of borrowers’ delinquencies.
Schedule of Allowance for Loan Losses	The changes in the allowance for loan losses for the three and nine months ended September 30, 2018 and 2017 , and the loans and allowance for loan losses by loan type based on impairment-evaluation method as of September 30, 2018 and December 31, 2017 are presented in the tables below. Three Months Ended September 30, 2018 Multi-family Commercial and Industrial Commercial Real Estate Owner Occupied Commercial Construction Residential Manufactured 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 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 September 30, 2018 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 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 September 30, 2018 Loans: Individually evaluated for impairment $ 1,343 $ 13,353 $ 1,335 $ 158 $ — $ 8,581 $ 10,378 $ 112 $ 35,260 Collectively evaluated for impairment 3,501,450 1,272,165 545,610 1,153,107 95,250 496,473 70,095 50,877 7,185,027 Loans acquired with credit deterioration 1,747 572 8,669 4,584 — 4,799 2,116 221 22,708 Total loans receivable (1) $ 3,504,540 $ 1,286,090 $ 555,614 $ 1,157,849 $ 95,250 $ 509,853 $ 82,589 $ 51,210 $ 7,242,995 Allowance for loan losses: Individually evaluated for impairment $ — $ 1,381 $ 80 $ — $ — $ 306 $ 4 $ — $ 1,771 Collectively evaluated for impairment 11,829 10,881 3,072 4,298 1,062 3,072 88 1,471 35,773 Loans acquired with credit deterioration — 452 — 2,151 — 523 2 69 3,197 Allowance for loan losses $ 11,829 $ 12,714 $ 3,152 $ 6,449 $ 1,062 $ 3,901 $ 94 $ 1,540 $ 40,741 Three Months Ended September 30, 2017 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, $ 12,028 $ 11,585 $ 2,976 $ 7,786 $ 716 $ 2,995 $ 268 $ 104 $ 38,458 Charge-offs — (2,032 ) — (77 ) — (120 ) — (356 ) (2,585 ) Recoveries — 54 — — 27 7 — 1 89 Provision for loan losses 668 966 262 (53 ) 104 72 (77 ) 410 2,352 Ending Balance, $ 12,696 $ 10,573 $ 3,238 $ 7,656 $ 847 $ 2,954 $ 191 $ 159 $ 38,314 Nine Months Ended September 30, 2017 Ending Balance, $ 11,602 $ 11,050 $ 2,183 $ 7,894 $ 840 $ 3,342 $ 286 $ 118 $ 37,315 Charge-offs — (4,079 ) — (485 ) — (410 ) — (602 ) (5,576 ) Recoveries — 337 9 — 157 34 — 101 638 Provision for loan losses 1,094 3,265 1,046 247 (150 ) (12 ) (95 ) 542 5,937 Ending Balance, $ 12,696 $ 10,573 $ 3,238 $ 7,656 $ 847 $ 2,954 $ 191 $ 159 $ 38,314 As of December 31, 2017 Loans: Individually evaluated for impairment $ — $ 17,461 $ 1,448 $ 160 $ — $ 9,247 $ 10,089 $ 30 $ 38,435 Collectively evaluated for impairment 3,500,500 1,130,865 472,708 1,213,309 85,393 219,162 77,587 3,301 6,702,825 Loans acquired with credit deterioration 1,881 764 10,572 5,250 — 5,681 2,551 216 26,915 Total loans receivable $ 3,502,381 $ 1,149,090 $ 484,728 $ 1,218,719 $ 85,393 $ 234,090 $ 90,227 $ 3,547 $ 6,768,175 Allowance for loan losses: Individually evaluated for impairment $ — $ 650 $ 642 $ — $ — $ 155 $ 4 $ — $ 1,451 Collectively evaluated for impairment 12,168 9,804 2,580 4,630 979 2,177 82 117 32,537 Loans acquired with credit deterioration — 464 10 2,807 — 597 94 55 4,027 Allowance for loan losses $ 12,168 $ 10,918 $ 3,232 $ 7,437 $ 979 $ 2,929 $ 180 $ 172 $ 38,015
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, 2018 and December 31, 2017 and the average recorded investment and interest income recognized for the three and nine months ended September 30, 2018 and 2017 . Purchased-credit-impaired loans are considered to be performing and are not included in the tables below. September 30, 2018 Three Months Ended September 30, 2018 Nine Months Ended Recorded Unpaid Related Average Interest Average Interest (amounts in thousands) With no recorded allowance: Multi-family $ 1,343 $ 1,343 $ — $ 1,343 $ — $ 672 $ 8 Commercial and industrial 9,888 10,224 — 7,765 166 7,623 168 Commercial real estate owner occupied 704 1,187 — 711 — 711 — Commercial real estate non-owner occupied 158 271 — 1,347 — 774 8 Other consumer 112 112 — 103 1 83 1 Residential real estate 4,259 4,504 — 4,281 23 3,952 25 Manufactured housing 10,152 10,152 — 10,147 144 10,011 421 With an allowance recorded: Commercial and industrial 3,465 3,648 1,381 5,787 27 7,089 39 Commercial real estate owner occupied 631 631 80 336 9 546 11 Residential real estate 4,322 4,329 306 4,398 61 4,760 124 Manufactured housing 226 226 4 227 4 225 10 Total $ 35,260 $ 36,627 $ 1,771 $ 36,445 $ 435 $ 36,446 $ 815 December 31, 2017 Three Months Ended Nine Months Ended Recorded Unpaid Related Average Interest Average Interest (amounts in thousands) With no recorded allowance: Commercial and industrial $ 9,138 $ 9,287 $ — $ 13,345 $ 354 $ 8,796 $ 450 Commercial real estate owner occupied 806 806 — 1,744 15 1,589 18 Commercial real estate non-owner occupied 160 272 — 184 91 989 93 Other consumer 30 30 — 44 — 50 — Residential real estate 3,628 3,801 — 5,228 125 4,865 126 Manufactured housing 9,865 9,865 — 10,243 164 10,038 457 With an allowance recorded: Commercial and industrial 8,323 8,506 650 1,963 — 5,400 22 Commercial real estate owner occupied 642 642 642 1,056 1 950 3 Commercial real estate non-owner occupied — — — 51 — 94 — Other consumer — — — 12 — 6 — Residential real estate 5,619 5,656 155 2,862 — 2,729 84 Manufactured housing 224 224 4 114 — 108 8 Total $ 38,435 $ 39,089 $ 1,451 $ 36,846 $ 750 $ 35,614 $ 1,261
Summary of Loans Modified in Troubled Debt Restructurings and Related Recorded Investment	The following table presents total TDRs based on loan type and accrual status at September 30, 2018 and December 31, 2017 . Nonaccrual TDRs are included in the reported amount of total non-accrual loans. September 30, 2018 December 31, 2017 Accruing Nonaccrual TDRs Total Accruing TDRs Nonaccrual TDRs Total (amounts in thousands) Commercial and industrial $ 66 $ 5,311 $ 5,377 $ 63 $ 5,939 $ 6,002 Commercial real estate owner occupied 37 — 37 — — — Manufactured housing 8,457 1,781 10,238 8,130 1,766 9,896 Residential real estate 3,059 698 3,757 3,828 703 4,531 Other consumer — 13 13 — — — Total TDRs $ 11,619 $ 7,803 $ 19,422 $ 12,021 $ 8,408 $ 20,429 The following table provides, by loan type, the number of loans modified in troubled debt restructurings, and the related recorded investment, during the three and nine months ended September 30, 2018 and 2017 . Three Months Ended September 30, 2018 Three Months Ended September 30, 2017 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Manufactured housing 7 $ 321 4 $ 182 Residential real estate 1 152 — — Total loans 8 $ 473 4 $ 182 Nine Months Ended September 30, 2018 Nine Months Ended September 30, 2017 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Commercial and industrial — $ — 3 $ 6,203 Manufactured housing 30 1,093 33 1,357 Residential real estate 2 352 — — Other consumer 1 13 — — Total loans 33 $ 1,458 36 $ 7,560
Analysis of Loans Modified in Troubled Debt Restructuring by Type of Concession	The following table presents loans modified in a troubled debt restructuring by type of concession for the three and nine months ended September 30, 2018 and 2017 . There were no modifications that involved forgiveness of debt for the three and nine months ended September 30, 2018 and 2017 . Three Months Ended September 30, 2018 Three Months Ended September 30, 2017 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Extensions of maturity — $ — 1 $ 60 Interest-rate reductions 8 473 3 122 Total 8 $ 473 4 $ 182 Nine Months Ended September 30, 2018 Nine Months Ended September 30, 2017 Number of Loans Recorded Investment Number of Loans Recorded Investment (dollars in thousands) Extensions of maturity 1 $ 56 4 $ 6,263 Interest-rate reductions 32 1,402 32 1,297 Total 33 $ 1,458 36 $ 7,560
Changes in Accretable Yield Related to Purchased-credit-impaired Loans	The changes in accretable yield related to purchased-credit-impaired loans for the three and nine months ended September 30, 2018 and 2017 were as follows: Three Months Ended September 30, 2018 2017 (amounts in thousands) Accretable yield balance as of June 30, $ 7,403 $ 9,006 Accretion to interest income (310 ) (368 ) Reclassification from nonaccretable difference and disposals, net (4 ) (276 ) Accretable yield balance as of September 30, $ 7,089 $ 8,362 Nine Months Ended September 30, 2018 2017 (amounts in thousands) Accretable yield balance as of December 31, $ 7,825 $ 10,202 Accretion to interest income (1,164 ) (1,326 ) Reclassification from nonaccretable difference and disposals, net 428 (514 ) Accretable yield balance as of September 30, $ 7,089 $ 8,362
Credit Ratings of Covered and Non-Covered Loan Portfolio	The following tables present the credit ratings of loans receivable as of September 30, 2018 and December 31, 2017 . September 30, 2018 Multi-Family Commercial and Industrial Commercial Real Estate Owner Occupied Commercial Real Estate Non-Owner Occupied Construction Residential Manufactured Housing Other Consumer Total (3) (amounts in thousands) Pass/Satisfactory $ 3,399,892 $ 1,235,945 $ 539,252 $ 1,084,388 $ 95,250 $ — $ — $ — $ 6,354,727 Special Mention 81,253 7,756 8,793 30,406 — — — — 128,208 Substandard 23,395 42,389 7,569 43,055 — — — — 116,408 Performing (1) — — — — — 502,010 74,893 51,053 627,956 Non-performing (2) — — — — — 7,843 7,696 157 15,696 Total $ 3,504,540 $ 1,286,090 $ 555,614 $ 1,157,849 $ 95,250 $ 509,853 $ 82,589 $ 51,210 $ 7,242,995 December 31, 2017 Multi-Family Commercial Commercial Real Estate Owner Occupied Commercial Real Estate Non-Owner Occupied Construction Residential Manufactured Housing Other Consumer Total (3) (amounts in thousands) Pass/Satisfactory $ 3,438,554 $ 1,118,889 $ 471,826 $ 1,185,933 $ 85,393 $ — $ — $ — $ 6,300,595 Special Mention 53,873 7,652 5,987 31,767 — — — — 99,279 Substandard 9,954 22,549 6,915 1,019 — — — — 40,437 Performing (1) — — — — — 221,042 81,497 3,400 305,939 Non-performing (2) — — — — — 13,048 8,730 147 21,925 Total $ 3,502,381 $ 1,149,090 $ 484,728 $ 1,218,719 $ 85,393 $ 234,090 $ 90,227 $ 3,547 $ 6,768,175 (1) Includes residential real estate, manufactured housing, and other consumer loans not subject to risk ratings. (2) Includes residential real estate, manufactured housing, and other consumer loans that are past due and still accruing interest or on nonaccrual status.

Regulatory Capital (Tables)

Regulatory Capital (Tables)	9 Months Ended
	Sep. 30, 2018
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, 2018: Common equity Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 740,968 8.703 % $ 383,113 4.500 % N/A N/A $ 542,744 6.375 % Customers Bank $ 1,054,869 12.393 % $ 383,042 4.500 % $ 553,282 6.500 % $ 542,642 6.375 % Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 958,418 11.257 % $ 510,818 6.000 % N/A N/A $ 670,448 7.875 % Customers Bank $ 1,054,869 12.393 % $ 510,722 6.000 % $ 680,963 8.000 % $ 670,323 7.875 % Total capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,080,245 12.688 % $ 681,090 8.000 % N/A N/A $ 840,721 9.875 % Customers Bank $ 1,204,825 14.154 % $ 680,963 8.000 % $ 851,204 10.000 % $ 840,563 9.875 % Tier 1 capital (to average assets) Customers Bancorp, Inc. $ 958,418 8.913 % $ 430,099 4.000 % N/A N/A $ 430,099 4.000 % Customers Bank $ 1,054,869 9.814 % $ 429,939 4.000 % $ 537,423 5.000 % $ 429,939 4.000 % As of December 31, 2017: Common equity Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 689,494 8.805 % $ 352,368 4.500 % N/A N/A $ 450,248 5.750 % Customers Bank $ 1,023,564 13.081 % $ 352,122 4.500 % $ 508,621 6.500 % $ 449,934 5.750 % Tier 1 capital (to risk-weighted assets) Customers Bancorp, Inc. $ 906,963 11.583 % $ 469,824 6.000 % N/A N/A $ 567,704 7.250 % Customers Bank $ 1,023,564 13.081 % $ 469,496 6.000 % $ 625,994 8.000 % $ 567,307 7.250 % Total capital (to risk-weighted assets) Customers Bancorp, Inc. $ 1,021,601 13.047 % $ 626,432 8.000 % N/A N/A $ 724,313 9.250 % Customers Bank $ 1,170,666 14.961 % $ 625,994 8.000 % $ 782,493 10.000 % $ 723,806 9.250 % Tier 1 capital (to average assets) Customers Bancorp, Inc. $ 906,963 8.937 % $ 405,949 4.000 % N/A N/A $ 405,949 4.000 % Customers Bank $ 1,023,564 10.092 % $ 405,701 4.000 % $ 507,126 5.000 % $ 405,701 4.000 %

Disclosures About Fair Value _2

Disclosures About Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Estimated Fair Values of Financial Instruments	The estimated fair values of Customers' financial instruments at September 30, 2018 and December 31, 2017 were as follows. Fair Value Measurements at September 30, 2018 Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (amounts in thousands) Assets: Cash and cash equivalents $ 666,034 $ 666,034 $ 666,034 $ — $ — Debt securities, available for sale 667,032 667,032 — 667,032 — Equity securities 1,819 1,819 1,819 — — Loans held for sale 1,383 1,383 — 1,383 — Total loans receivable, net of allowance for loan losses 8,715,536 8,646,346 — 1,516,327 7,130,019 FHLB, Federal Reserve Bank and other restricted stock 74,206 74,206 — 74,206 — Derivatives 22,613 22,613 — 22,491 122 Liabilities: Deposits $ 8,513,714 $ 8,506,804 $ 6,120,233 $ 2,386,571 $ — FHLB advances 835,000 834,968 — 834,968 — Other borrowings 123,779 124,724 — 124,724 — Subordinated debt 108,953 114,400 — 114,400 — Derivatives 15,684 15,684 — 15,684 — Fair Value Measurements at December 31, 2017 Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (amounts in thousands) (as restated) Assets: Cash and cash equivalents $ 146,323 $ 146,323 $ 146,323 $ — $ — Investment securities, available for sale 471,371 471,371 3,352 468,019 — Loans held for sale (as restated) 146,077 146,251 — 1,886 144,365 Total loans receivable, net of allowance for loan losses (as restated) 8,523,651 8,470,171 — 1,793,408 6,676,763 FHLB, Federal Reserve Bank and other restricted stock 105,918 105,918 — 105,918 — Derivatives 9,752 9,752 — 9,692 60 Liabilities: Deposits $ 6,800,142 $ 6,796,095 $ 4,894,449 $ 1,901,646 $ — Federal funds purchased 155,000 155,000 155,000 — — FHLB advances 1,611,860 1,611,603 881,860 729,743 — Other borrowings 186,497 193,557 65,072 128,485 — Subordinated debt 108,880 115,775 — 115,775 — Derivatives 10,074 10,074 — 10,074 —
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, 2018 and December 31, 2017 were as follows: September 30, 2018 Fair Value Measurements at the End of the Reporting Period Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total (amounts in thousands) Measured at Fair Value on a Recurring Basis: Assets Available-for-sale debt securities: Agency-guaranteed residential mortgage-backed securities $ — $ 305,418 $ — $ 305,418 Corporate notes — 361,614 — 361,614 Equity securities 1,819 — — 1,819 Derivatives — 22,491 122 22,613 Loans held for sale – fair value option — 1,383 — 1,383 Loans receivable, mortgage warehouse - fair value option — 1,516,327 — 1,516,327 Total assets - recurring fair value measurements $ 1,819 $ 2,207,233 $ 122 $ 2,209,174 Liabilities Derivatives $ — $ 15,684 $ — $ 15,684 Measured at Fair Value on a Nonrecurring Basis: Assets Impaired loans, net of reserves of $1,771 $ — $ — $ 7,295 $ 7,295 Other real estate owned — — 1,078 1,078 Total assets - nonrecurring fair value measurements $ — $ — $ 8,373 $ 8,373 December 31, 2017 Fair Value Measurements at the End of the Reporting Period Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total (amounts in thousands) (as restated) Measured at Fair Value on a Recurring Basis: Assets Available-for-sale securities: Agency-guaranteed residential mortgage-backed securities $ — $ 183,458 $ — $ 183,458 Agency-guaranteed commercial real estate mortgage-backed securities — 238,472 — 238,472 Corporate notes — 46,089 — 46,089 Equity securities 3,352 — — 3,352 Derivatives — 9,692 60 9,752 Loans held for sale – fair value option (as restated) — 1,886 144,365 146,251 Loans receivable, mortgage warehouse - fair value option (as restated) — 1,793,408 — 1,793,408 Total assets - recurring fair value measurements $ 3,352 $ 2,273,005 $ 144,425 $ 2,420,782 Liabilities Derivatives $ — $ 10,074 $ — $ 10,074 Measured at Fair Value on a Nonrecurring Basis: Assets Impaired loans, net of reserves of $1,451 $ — $ — $ 13,902 $ 13,902 Other real estate owned — — 1,449 1,449 Total assets - nonrecurring fair value measurements $ — $ — $ 15,351 $ 15,351
Statement of Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis	The changes in Level 3 assets measured at fair value on a recurring basis for the three and nine months ended September 30, 2018 and 2017 are summarized in the tables below. Additional information about residential mortgage loan commitments can be found in NOTE 10 - DERIVATIVES INSTRUMENTS AND HEDGING ACTIVITIES. Residential Mortgage Loan Commitments Three Months Ended September 30, 2018 2017 (amounts in thousands) Balance at June 30 $ 133 $ 102 Issuances 122 103 Settlements (133 ) (102 ) Balance at September 30 $ 122 $ 103 Residential Mortgage Loan Commitments Nine Months Ended September 30, 2018 2017 (amounts in thousands) Balance at December 31 $ 60 $ 45 Issuances 338 300 Settlements (276 ) (242 ) Balance at September 30 $ 122 $ 103
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, 2018 and December 31, 2017 on a recurring and nonrecurring basis for which Customers utilized Level 3 inputs to measure fair value. The unobservable Level 3 inputs noted below contain a level of uncertainty that may differ from what is realized in an immediate settlement of the assets. Therefore, Customers may realize a value higher or lower than the current estimated fair value of the assets. Quantitative Information about Level 3 Fair Value Measurements September 30, 2018 Fair Value Estimate Valuation Technique Unobservable Input Range (Weighted Average) (amounts in thousands) Impaired loans - Real Estate $ 5,211 Collateral appraisal (1) Liquidation expenses (2) 8% - 8% Impaired loans - C&I 2,084 Business asset valuation (3) Business asset valuation adjustments (4) 6% - 63% Other real estate owned 1,078 Collateral appraisal (1) Liquidation expenses (2) 8% - 10% Residential mortgage loan commitments 122 Adjusted market bid Pull-through rate 90% - 90% Quantitative Information about Level 3 Fair Value Measurements December 31, 2017 Fair Value Estimate Valuation Technique Unobservable Input Range (Weighted Average) (amounts in thousands) Impaired loans $ 13,902 Collateral appraisal (1) Liquidation expenses (2) 8% - 8% Other real estate owned 1,449 Collateral appraisal (1) Liquidation expenses (2) 8% - 8% Residential mortgage loan commitments 60 Adjusted market bid Pull-through rate 90% - 90% (1) Obtained from approved independent appraisers. Appraisals are current and in compliance with credit policy. The Bank 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.

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2018
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, 2018 and December 31, 2017 . September 30, 2018 Derivative Assets Derivative Liabilities Balance Sheet Location Fair Value Balance Sheet Location Fair Value (amounts in thousands) Derivatives designated as cash flow hedges: Interest rate swaps Other assets $ 3,859 Other liabilities $ — Total $ 3,859 $ — Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 18,596 Other liabilities $ 15,653 Credit contracts Other assets 36 Other liabilities 31 Residential mortgage loan commitments Other assets 122 Other liabilities — Total $ 18,754 $ 15,684 December 31, 2017 Derivative Assets Derivative Liabilities Balance Sheet Balance Sheet Location Fair Value Location Fair Value (amounts in thousands) Derivatives designated as cash flow hedges: Interest rate swaps Other assets $ 816 Other liabilities $ 1,140 Total $ 816 $ 1,140 Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 8,776 Other liabilities $ 8,897 Credit contracts Other assets 100 Other liabilities 37 Residential mortgage loan commitments Other assets 60 Other liabilities — Total $ 8,936 $ 8,934
Effect of Derivative Financial 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, 2018 and 2017 . Three Months Ended September 30, 2018 Income Statement Location Amount of Income (Loss) Recognized in Earnings (amounts in thousands) 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 Three Months Ended September 30, 2017 Income Statement Location Amount of Income (Loss) Recognized in Earnings (amounts in thousands) Derivatives not designated as hedging instruments: Interest rate swaps Other non-interest income $ 91 Credit contracts Other non-interest income (6 ) Residential mortgage loan commitments Mortgage banking income 1 Total $ 86 Nine Months Ended September 30, 2018 Income Statement Location Amount of Income Recognized in Earnings (amounts in thousands) 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 Nine Months Ended September 30, 2017 Income Statement Location Amount of Income (Loss) Recognized in Earnings (amounts in thousands) Derivatives not designated as hedging instruments: Interest rate swaps Other non-interest income $ 429 Credit contracts Other non-interest income (5 ) Residential mortgage loan commitments Mortgage banking income 58 Total $ 482 Three Months Ended September 30, 2018 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 (amounts in thousands) Derivatives in cash flow hedging relationships: Interest rate swaps $ 3,006 Interest expense $ (303 ) Other non-interest income (2) 2,822 Total $ 2,519 Three Months Ended September 30, 2017 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 (amounts in thousands) Derivatives in cash flow hedging relationships: Interest rate swaps $ 104 Interest expense $ (572 ) Nine Months Ended September 30, 2018 Amount of Gain (Loss) Location of Gain (Loss) Amount of Gain (Loss) (amounts in thousands) Derivative in cash flow hedging relationships: Interest rate swaps $ 5,055 Interest expense $ (175 ) Other non-interest income (2) 2,822 Total $ 2,647 Nine Months Ended September 30, 2017 Amount of Gain (Loss) Location of Gain (Loss) Amount of Gain (Loss) (amounts in thousands) Derivative in cash flow hedging relationships: Interest rate swaps $ (115 ) Interest expense $ (2,166 ) (1) Amounts presented are net of taxes. See NOTE 4 - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) for total effect on other comprehensive income (loss) from derivatives designated as cash flow hedges for the periods presented.
Summary of Offsetting of Financial Assets and Derivative Assets	Offsetting of Financial Assets and Derivative Assets At December 31, 2017 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 Net Amount Financial Instruments Cash Collateral Received (amounts in thousands) Description Interest rate swap derivatives with institutional counterparties $ 5,930 $ — $ 5,930 $ — $ 5,070 $ 860 Offsetting of Financial Assets and Derivative Assets At September 30, 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 Net Amount Financial Instruments Cash Collateral Received (amounts in thousands) Description Interest rate swap derivatives with institutional counterparties $ 20,688 $ — $ 20,688 $ — $ 19,330 $ 1,358
Summary of Offsetting of Financial Liabilities and Derivative Liabilities	Offsetting of Financial Liabilities and Derivative Liabilities At December 31, 2017 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 Net Amount Financial Instruments Cash Collateral Pledged (amounts in thousands) Description Interest rate swap derivatives with institutional counterparties $ 5,058 $ — $ 5,058 $ — $ 4,872 $ 186 Offsetting of Financial Liabilities and Derivative Liabilities At September 30, 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 Financial Instruments Cash Collateral Pledged Net Amount (amounts in thousands) Description Interest rate swap derivatives with institutional counterparties $ 1,924 $ — $ 1,924 $ — $ 2 $ 1,922

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2018
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 month periods ended September 30, 2018 and 2017 . The segment financial results include directly attributable revenues and expenses. Corporate overhead costs were assigned to the Community Business Banking segment as those expenses were expected to continue following the planned spin-off of BankMobile. Similarly, the preferred stock dividends have been allocated in their entirety to the Community Business Banking segment. The tax benefit assigned to BankMobile was based on an estimated effective tax rate of 24.57% for 2018 and 37.25% for 2017 , respectively. Please refer to NOTE 13 - SUBSEQUENT EVENTS for more information on the spin-off of BankMobile. Three Months Ended September 30, 2018 (amounts in thousands) Community 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 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 Three Months Ended September 30, 2017 (amounts in thousands) Community Business Banking BankMobile Consolidated Interest income (1) $ 95,585 $ 2,700 $ 98,285 Interest expense 30,250 16 30,266 Net interest income 65,335 2,684 68,019 Provision for loan losses 1,874 478 2,352 Non-interest income 4,190 13,836 18,026 Non-interest expense 33,990 27,050 61,040 Income (loss) before income tax expense (benefit) 33,661 (11,008 ) 22,653 Income tax expense (benefit) 18,999 (4,100 ) 14,899 Net income (loss) 14,662 (6,908 ) 7,754 Preferred stock dividends 3,615 — 3,615 Net income (loss) available to common shareholders $ 11,047 $ (6,908 ) $ 4,139 (1) Amounts reported include funds transfer pricing of $3.9 million and $2.7 million for the three months ended September 30, 2018 and 2017 , respectively, credited to BankMobile for the value provided to the Community Business Banking segment for the use of low/no cost deposits. Nine Months Ended September 30, 2018 (amounts in thousands) Community Business Banking BankMobile Consolidated Interest income (2) $ 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 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 $ 10,542,175 $ 74,929 $ 10,617,104 Total deposits $ 7,781,225 $ 732,489 $ 8,513,714 Total non-deposit liabilities $ 1,134,251 $ 14,327 $ 1,148,578 Nine Months Ended September 30, 2017 (amounts in thousands) Community Business Banking BankMobile Consolidated Interest income (2) $ 265,524 $ 9,708 $ 275,232 Interest expense 76,134 55 76,189 Net interest income 189,390 9,653 199,043 Provision for loan losses 5,459 478 5,937 Non-interest income 16,587 42,583 59,170 Non-interest expense 94,704 66,114 160,818 Income (loss) before income tax expense (benefit) 105,814 (14,356 ) 91,458 Income tax expense (benefit) 39,584 (5,348 ) 34,236 Net income (loss) 66,230 (9,008 ) 57,222 Preferred stock dividends 10,844 — 10,844 Net income (loss) available to common shareholders $ 55,386 $ (9,008 ) $ 46,378 As of September 30, 2017 Goodwill and other intangibles $ 3,632 $ 12,972 $ 16,604 Total assets $ 10,405,452 $ 66,377 $ 10,471,829 Total deposits $ 6,815,994 $ 781,082 $ 7,597,076 Total non-deposit liabilities $ 1,947,213 $ 16,898 $ 1,964,111 (2) Amounts reported include funds transfer pricing of $11.8 million and $9.7 million for the nine months ended September 30, 2018 and 2017 , respectively, credited to BankMobile for the value provided to the Community Business Banking segment for the use of low/no cost deposits.

Non-Interest Revenues (Tables)

Non-Interest Revenues (Tables)	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The following tables present Customers' non-interest revenues affected by ASC 606 by business segment for the three and nine months ended September 30, 2018 and 2017 : Three Months Ended September 30, 2018 (amounts in thousands) Community Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and Card Revenue $ 181 $ 6,903 $ 7,084 Deposit Fees 311 1,691 2,002 University Fees - Card and Disbursement Fees — 261 261 Total revenue recognized at point in time 492 8,855 9,347 Revenue recognized over time: University Fees - Subscription Revenue — 950 950 Total revenue recognized over time — 950 950 Total revenue from contracts with customers $ 492 $ 9,805 $ 10,297 Three Months Ended September 30, 2017 (amounts in thousands) Community Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and Card Revenue $ 215 $ 9,355 $ 9,570 Deposit Fees 321 2,338 2,659 University Fees - Card and Disbursement Fees — 283 283 Total revenue recognized at point in time 536 11,976 12,512 Revenue recognized over time: University Fees - Subscription Revenue — 829 829 Total revenue recognized over time — 829 829 Total revenue from contracts with customers $ 536 $ 12,805 $ 13,341 Nine Months Ended September 30, 2018 (amounts in thousands) Community Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and Card Revenue $ 588 $ 22,539 $ 23,127 Deposit Fees 892 4,834 5,726 University Fees - Card and Disbursement Fees — 772 772 Total revenue recognized at point in time 1,480 28,145 29,625 Revenue recognized over time: University Fees - Subscription Revenue — 2,727 2,727 Total revenue recognized over time — 2,727 2,727 Total revenue from contracts with customers $ 1,480 $ 30,872 $ 32,352 Nine Months Ended September 30, 2017 (amounts in thousands) Community Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and Card Revenue $ 544 $ 31,185 $ 31,729 Deposit Fees 902 7,016 7,918 University Fees - Card and Disbursement Fees — 878 878 Total revenue recognized at point in time 1,446 39,079 40,525 Revenue recognized over time: University Fees - Subscription Revenue — 2,408 2,408 Total revenue recognized over time — 2,408 2,408 Total revenue from contracts with customers $ 1,446 $ 41,487 $ 42,933
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, 2018 and 2017 : Three Months Ended September 30, 2018 (amounts in thousands) Community Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and Card Revenue $ 181 $ 6,903 $ 7,084 Deposit Fees 311 1,691 2,002 University Fees - Card and Disbursement Fees — 261 261 Total revenue recognized at point in time 492 8,855 9,347 Revenue recognized over time: University Fees - Subscription Revenue — 950 950 Total revenue recognized over time — 950 950 Total revenue from contracts with customers $ 492 $ 9,805 $ 10,297 Three Months Ended September 30, 2017 (amounts in thousands) Community Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and Card Revenue $ 215 $ 9,355 $ 9,570 Deposit Fees 321 2,338 2,659 University Fees - Card and Disbursement Fees — 283 283 Total revenue recognized at point in time 536 11,976 12,512 Revenue recognized over time: University Fees - Subscription Revenue — 829 829 Total revenue recognized over time — 829 829 Total revenue from contracts with customers $ 536 $ 12,805 $ 13,341 Nine Months Ended September 30, 2018 (amounts in thousands) Community Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and Card Revenue $ 588 $ 22,539 $ 23,127 Deposit Fees 892 4,834 5,726 University Fees - Card and Disbursement Fees — 772 772 Total revenue recognized at point in time 1,480 28,145 29,625 Revenue recognized over time: University Fees - Subscription Revenue — 2,727 2,727 Total revenue recognized over time — 2,727 2,727 Total revenue from contracts with customers $ 1,480 $ 30,872 $ 32,352 Nine Months Ended September 30, 2017 (amounts in thousands) Community Business Banking BankMobile Consolidated Revenue from contracts with customers: Revenue recognized at point in time: Interchange and Card Revenue $ 544 $ 31,185 $ 31,729 Deposit Fees 902 7,016 7,918 University Fees - Card and Disbursement Fees — 878 878 Total revenue recognized at point in time 1,446 39,079 40,525 Revenue recognized over time: University Fees - Subscription Revenue — 2,408 2,408 Total revenue recognized over time — 2,408 2,408 Total revenue from contracts with customers $ 1,446 $ 41,487 $ 42,933

Description of the Business - A

Description of the Business - Additional Information (Detail)	Sep. 30, 2018Branch
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of branches (branch)	13

Significant Accounting Polici_4

Significant Accounting Policies and Basis of Presentation - Schedule of Error Correction on Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Loans held for sale	$ 1,383	$ 146,077
Loans receivable, mortgage warehouse, at fair value	1,516,327	1,793,408
Total loans receivable, net of allowance for loan losses	$ 8,715,536	8,523,651
Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Loans held for sale		1,939,485
Loans receivable, mortgage warehouse, at fair value		0
Total loans receivable, net of allowance for loan losses		6,730,243
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Loans held for sale		(1,793,408)
Loans receivable, mortgage warehouse, at fair value		1,793,408
Total loans receivable, net of allowance for loan losses		$ 1,793,408

Significant Accounting Polici_5

Significant Accounting Policies and Basis of Presentation - Schedule of Error Correction on Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Origination of loans held for sale	$ (22,978)	$ (32,343)
Proceeds from the sale of loans held for sale	23,936	31,718
Net Cash Provided By Operating Activities	98,365	30,322
Origination of mortgage warehouse loans	(21,739,744)	(22,738,383)
Proceeds from repayments of mortgage warehouse loans	22,016,825	22,893,950
Net Cash Used In Investing Activities	$ (289,091)	(1,111,861)
Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Origination of loans held for sale		(22,770,726)
Proceeds from the sale of loans held for sale		22,925,668
Net Cash Provided By Operating Activities		185,889
Origination of mortgage warehouse loans		0
Proceeds from repayments of mortgage warehouse loans		0
Net Cash Used In Investing Activities		(1,267,428)
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Origination of loans held for sale		22,738,383
Proceeds from the sale of loans held for sale		(22,893,950)
Net Cash Provided By Operating Activities		(155,567)
Origination of mortgage warehouse loans		(22,738,383)
Proceeds from repayments of mortgage warehouse loans		22,893,950
Net Cash Used In Investing Activities		$ 155,567

Significant Accounting Polici_6

Significant Accounting Policies and Basis of Presentation - Narrative (Details) - USD ($) $ in Thousands	Jan. 01, 2018	Sep. 30, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings		$ 302,404	$ 258,076
Operating lease commitments which will result in the recognition of a lease liability and corresponding right-of-use asset			$ 22,000
Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle in period of adoption	$ 0
Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle in period of adoption	0
Net unrealized gain	1,041
Accumulated Other Comprehensive (Loss) Income | Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle in period of adoption	(298)
Accumulated Other Comprehensive (Loss) Income | Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle in period of adoption	(1,041)
Retained Earnings | Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle in period of adoption	298
Retained Earnings | Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle in period of adoption	$ 1,041

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, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Net income (loss) available to common shareholders	$ 2,414	$ 4,139	$ 42,989	$ 46,378
Weighted-average number of common shares outstanding - basic (shares)	31,671,122	30,739,671	31,554,407	30,597,314
Share-based compensation plans (shares)	601,622	1,754,480	750,573	2,004,917
Warrants (shares)	4,846	18,541	7,475	24,392
Weighted-average number of common shares - diluted (shares)	32,277,590	32,512,692	32,312,455	32,626,623
Basic earnings per common share (usd per share)	$ 0.08	$ 0.13	$ 1.36	$ 1.52
Diluted earnings per common share (usd per share)	$ 0.07	$ 0.13	$ 1.33	$ 1.42

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, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Anti-dilutive securities:
Total anti-dilutive securities (shares)	1,787,670	461,467	1,105,287	461,467
Share-based compensation awards
Anti-dilutive securities:
Total anti-dilutive securities (shares)	1,787,670	409,225	1,105,287	409,225
Warrants
Anti-dilutive securities:
Total anti-dilutive securities (shares)	0	52,242	0	52,242

Changes in Accumulated Other _3

Changes in Accumulated Other Comprehensive Income (Loss) By Component (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Jan. 01, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 936,227	$ 910,289	$ 920,964	$ 855,872	$ 855,872
Ending balance	954,812	910,642	954,812	910,642	920,964
Reclassification, available-for-sale debt securities, after tax	12,602	(5,440)	(21,651)	4,063
Unrealized Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(35,711)		(249)
Balance after reclassification adjustments on January 1, 2018					(1,458)
Other comprehensive income (loss) before reclassifications	(1,206)		(35,459)
Amounts reclassified from accumulated other comprehensive income (loss) to net income	13,808		13,808
Net current-period other comprehensive income (loss)	12,602		(21,651)
Ending balance	(23,109)		(23,109)		(249)
Foreign Currency Items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	0		88
Balance after reclassification adjustments on January 1, 2018					0
Other comprehensive income (loss) before reclassifications	0		0
Amounts reclassified from accumulated other comprehensive income (loss) to net income	0		0
Net current-period other comprehensive income (loss)	0		0
Ending balance	0		0		88
Total Unrealized Gains (Losses)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(35,711)	6,822	(161)	(2,681)	(2,681)
Balance after reclassification adjustments on January 1, 2018					(1,458)
Other comprehensive income (loss) before reclassifications	(1,206)	(2,177)	(35,459)	9,268
Amounts reclassified from accumulated other comprehensive income (loss) to net income	13,808	(3,263)	13,808	(5,205)
Net current-period other comprehensive income (loss)	12,602	(5,440)	(21,651)	4,063
Ending balance	(23,109)	1,382	(23,109)	1,382	(161)
Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	1,714	(1,458)	(198)	(2,211)	(2,211)
Balance after reclassification adjustments on January 1, 2018					(240)
Other comprehensive income (loss) before reclassifications	3,006	104	5,055	(115)
Amounts reclassified from accumulated other comprehensive income (loss) to net income	(1,864)	349	(1,959)	1,321
Net current-period other comprehensive income (loss)	1,142	453	3,096	1,206
Ending balance	2,856	(1,005)	2,856	(1,005)	(198)
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(33,997)	5,364	(359)	(4,892)	(4,892)
Balance after reclassification adjustments on January 1, 2018					(1,698)
Other comprehensive income (loss) before reclassifications	1,800	(2,073)	(30,404)	9,153
Amounts reclassified from accumulated other comprehensive income (loss) to net income	11,944	(2,914)	11,849	(3,884)
Net current-period other comprehensive income (loss)	13,744	(4,987)	(18,555)	5,269
Ending balance	(20,253)	377	(20,253)	377	(359)
Retained Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	299,990	235,938	258,076	193,698	193,698
Ending balance	302,404	240,076	302,404	240,076	$ 258,076
ASU 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)
ASU 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
ASU 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)
ASU 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)
ASU 2018-02 | Accumulated Other Comprehensive (Loss) Income
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 | Accumulated Other Comprehensive (Loss) Income
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 | Accumulated Other Comprehensive (Loss) Income
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		5,300		8,500
Reclassification, available-for-sale debt securities, after tax		3,300		5,200
Interest Expense
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Reclassification, available-for-sale debt securities, before tax	18,700		13,800
Reclassification, cash flow hedge, before tax	303	572	175	2,200
Reclassification, cash flow hedge, after tax	224	$ 349	129	$ 1,300
Non-interest income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Reclassification, cash flow hedge, before tax	$ 2,800
Reclassification, cash flow hedge, after tax			$ 2,100

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost and Approximate Fair Value of Investment Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 698,260	$ 472,300
Gross Unrealized Gains	347	2,639
Gross Unrealized Losses	(31,575)	(3,568)
Available-for-sale securities, debt securities	667,032	471,371
Investment securities, at fair value	668,851	471,371
Investment securities, at fair value		471,371
Corporate notes
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	381,475	44,959
Gross Unrealized Gains	347	1,130
Gross Unrealized Losses	(20,208)	0
Available-for-sale securities, debt securities	361,614	46,089
Agency-guaranteed residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	316,785	186,221
Gross Unrealized Gains	0	36
Gross Unrealized Losses	(11,367)	(2,799)
Available-for-sale securities, debt securities	305,418	183,458
Agency-guaranteed commercial real estate mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		238,809
Gross Unrealized Gains		432
Gross Unrealized Losses		(769)
Available-for-sale securities, debt securities		238,472
Equity securities
Debt Securities, Available-for-sale [Line Items]
Investment securities, at fair value	$ 1,819
Amortized Cost		2,311
Gross Unrealized Gains		1,041
Gross Unrealized Losses		0
Investment securities, at fair value		$ 3,352

Investment Securities - Stateme

Investment Securities - Statement of Proceeds from Sale of Available for Sale Investment Securities (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale of available-for-sale securities	$ 476,182	$ 554,540	$ 476,182	$ 670,522
Gross gains	0	5,349	0	8,532
Gross losses	(18,659)	0	(18,659)	0
Net (losses)/gains	$ (18,659)	$ 5,349	$ (18,659)	$ 8,532

Investment Securities - Summa_2

Investment Securities - Summary of Available-for-Sale Debt Securities by Stated Maturity (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Due in one year or less, amortized cost	$ 0
Due after one year through five years, amortized cost	0
Due after five years through ten years, amortized cost	229,807
Due after ten years, amortized cost	151,668
Amortized Cost	698,260	$ 472,300
Due in one year or less, fair value	0
Due after one year through five years, fair value	0
Due after five years through ten years, fair value	218,904
Due after ten years, fair value	142,710
Total debt securities, fair value	667,032	471,371
Agency-guaranteed residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Agency-guaranteed mortgage backed securities, amortized cost	316,785
Amortized Cost	316,785	186,221
Agency-guaranteed mortgage-backed securities, fair value	305,418
Total debt securities, fair value	$ 305,418	$ 183,458

Investment Securities - Gross U

Investment Securities - Gross Unrealized Losses and Fair Value, Aggregated by Investment Category (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	$ 626,721	$ 220,831
Less Than 12 Months, Unrealized Losses	(31,575)	(1,396)
12 Months or More, Fair Value	0	72,730
12 Months or More, Unrealized Losses	0	(2,172)
Fair Value, Total	626,721	293,561
Unrealized Losses	(31,575)	(3,568)
Corporate notes
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	321,303
Less Than 12 Months, Unrealized Losses	(20,208)
12 Months or More, Fair Value	0
12 Months or More, Unrealized Losses	0
Fair Value, Total	321,303
Unrealized Losses	(20,208)
Agency-guaranteed residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value	305,418	104,861
Less Than 12 Months, Unrealized Losses	(11,367)	(656)
12 Months or More, Fair Value	0	66,579
12 Months or More, Unrealized Losses	0	(2,143)
Fair Value, Total	305,418	171,440
Unrealized Losses	$ (11,367)	(2,799)
Agency-guaranteed commercial real estate mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Fair Value		115,970
Less Than 12 Months, Unrealized Losses		(740)
12 Months or More, Fair Value		6,151
12 Months or More, Unrealized Losses		(29)
Fair Value, Total		122,121
Unrealized Losses		$ (769)

Investment Securities - Additio

Investment Securities - Additional Information (Detail)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018USD ($)Security	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)Security	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)	Jan. 01, 2018USD ($)
Debt Securities, Available-for-sale [Line Items]
Number of available-for-sale investment securities in the less than twelve month category (security) | Security	28		28
Number of available-for-sale investment securities in the twelve month or more category (security) | Security	0		0
Impairment loss on investment securities	$ 0	$ (8,349,000)	$ 0	$ (12,934,000)
Investment securities, at fair value					$ 471,371,000
Unrealized gains (losses) on equity securities	12,602,000	(5,440,000)	(21,651,000)	4,063,000
Deferred tax liability on investment holding gain					0
Gain (Loss) on Investments			(1,533,000)	0
Pledged investment securities fair value	187,100,000		187,100,000		16,900,000
Equity securities
Debt Securities, Available-for-sale [Line Items]
Impairment loss on investment securities		$ (8,300,000)		$ (12,900,000)
Investment securities, at fair value					3,352,000
Unrealized gains (losses) on equity securities					$ 1,000,000
Accounting Standards Update 2016-01
Debt Securities, Available-for-sale [Line Items]
Cumulative effect of new accounting principle in period of adoption						$ 0
Accumulated Other Comprehensive (Loss) Income | Accounting Standards Update 2016-01
Debt Securities, Available-for-sale [Line Items]
Cumulative effect of new accounting principle in period of adoption						$ 1,000,000
Other Non-interest Income | Equity securities
Debt Securities, Available-for-sale [Line Items]
Gain (Loss) on Investments	$ 1,200,000		$ (1,500,000)

Loans Held for Sale - Compositi

Loans Held for Sale - Composition of Loans Held for Sale (Detail) - USD ($)	Mar. 31, 2018	Jun. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Receivables Held-for-sale [Abstract]
Multi-family loans at lower of cost or fair value			$ 0		$ 144,191,000
Total commercial loans held for sale			0		144,191,000
Residential mortgage loans, at fair value			1,383,000		1,886,000
Loans held for sale			1,383,000		$ 146,077,000
Transfer of loans held for sale to held for investment	$ 129,700,000		129,691,000	$ 0
Transfer of loans held for investment to held for sale		$ 150,600,000	$ 0	$ 150,638,000

Loans Receivable and Allowanc_3

Loans Receivable and Allowance for Loan Losses - Schedule of Loans Receivable (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 7,239,950		$ 6,768,258
Loans receivable, gross	7,242,995		6,768,175
Deferred (fees)/costs and unamortized (discounts)/premiums, net	(3,045)		83
Allowance for loan losses	(40,741)	$ (38,288)	(38,015)	$ (38,314)	$ (38,458)		$ (37,315)
Total loans receivable, net of allowance for loan losses	8,715,536		8,523,651
Mortgage Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	1,516,327		1,793,408
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	3,504,540		3,502,381
Allowance for loan losses	(11,829)	(12,069)	(12,168)	(12,696)	(12,028)		(11,602)
Total loans receivable, net of allowance for loan losses						$ 94,900
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	95,250		85,393
Allowance for loan losses	(1,062)	(992)	(979)	(847)	(716)		(840)
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	509,853		234,090
Allowance for loan losses	(3,901)	(2,908)	(2,929)	(2,954)	(2,995)		(3,342)
Manufactured housing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	82,589		90,227
Allowance for loan losses	(94)	(149)	(180)	(191)	(268)		(286)
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	51,210		3,547
Allowance for loan losses	(1,540)	$ (226)	(172)	$ (159)	$ (104)		$ (118)
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	6,599,343		6,440,311
Commercial | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	3,504,540		3,502,381
Commercial | Commercial and industrial (including owner occupied commercial real estate)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	1,841,704		1,633,818
Commercial | Commercial real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	1,157,849		1,218,719
Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	95,250		85,393
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	643,652		327,864
Consumer | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	509,853		234,090
Consumer | Manufactured housing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	82,589		90,227
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 51,210		$ 3,547

Loans Receivable and Allowanc_4

Loans Receivable and Allowance for Loan Losses - Additional Information (Detail)	Sep. 30, 2018USD ($)CommitmentLoan	Jun. 30, 2018USD ($)Loan	Dec. 31, 2017USD ($)Loan	Jun. 30, 2017USD ($)Loan	Sep. 30, 2018USD ($)AllowanceCommitmentLoan	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)	Sep. 30, 2017USD ($)AllowanceLoan	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Sep. 30, 2018USD ($)CommitmentLoan	Sep. 30, 2017USD ($)AllowanceLoan
Financing Receivable, Modifications [Line Items]
Loans held for sale, average life from purchase to sale											25 days
Number of Loans | Loan					8			4			33	36
Funds for reimbursement	$ 500,000		$ 600,000		$ 500,000						$ 500,000
Loans reported as TDR	$ 19,400,000		20,400,000		$ 19,400,000						$ 19,400,000
Minimum performance requirement											6 months
Number of commitments to lend additional funds (commitment) | Commitment	0				0						0
Loans modified as TDR allowance (allowance) | Allowance					0			0				0
Residential mortgage loans acquired												$ 0
Loans receivable, net of allowance for loan losses	$ 8,715,536,000		8,523,651,000		$ 8,715,536,000						$ 8,715,536,000
Proceeds from sales of loans											42,211,000	124,703,000
Purchase of loans								$ 0			347,740,000	262,641,000
Gain on sale of SBA and other loans					1,096,000			$ 1,144,000			3,404,000	3,045,000
Term of fixed rate residential mortgage loans								30 years	30 years	30 years
Purchase price as a percentage of loans outstanding						100.40%			101.00%	98.50%
Mortgage and Consumer Loans
Financing Receivable, Modifications [Line Items]
Loans receivable, net of allowance for loan losses	72,700,000				$ 72,700,000						72,700,000
Purchase price as a percentage of loans outstanding					95.30%
Residential real estate
Financing Receivable, Modifications [Line Items]
Residential real estate held in other real estate owned	400,000		300,000		$ 400,000						400,000
Loans in process of foreclosure	$ 2,100,000		$ 1,600,000		2,100,000						2,100,000
Loans receivable, net of allowance for loan losses		$ 277,400,000				$ 277,400,000
Term of fixed rate residential mortgage loans						30 years
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of loans modified as TDR (loan) | Loan	1		1
Loans modified as TDR	$ 1,500,000		$ 2,100,000
Manufactured housing
Financing Receivable, Modifications [Line Items]
Number of loans modified as TDR (loan) | Loan		0		10
Loans modified as TDR												$ 500,000
Loans modified as TDR allowance (allowance) | Allowance												1
Allowance for credit losses, effect of change in method												$ 1,000
Small Business Administration Loan
Financing Receivable, Modifications [Line Items]
Loans receivable, net of allowance for loan losses	12,100,000	$ 11,700,000		$ 7,000,000	12,100,000	$ 11,700,000	$ 15,000,000	$ 11,000,000	$ 7,000,000	$ 8,700,000	12,100,000	$ 11,000,000
Gain on sale of SBA and other loans					1,100,000	$ 900,000	$ 1,400,000	$ 1,100,000	600,000	800,000
Residential Mortgage Loan Commitments
Financing Receivable, Modifications [Line Items]
Loans receivable, net of allowance for loan losses				$ 90,000,000					$ 90,000,000	174,200,000
Multi-family
Financing Receivable, Modifications [Line Items]
Loans receivable, net of allowance for loan losses										94,900,000
Proceeds from sales of loans										95,400,000
Gain on sale of SBA and other loans										$ 500,000
Federal Home Loan Bank of Pittsburgh
Financing Receivable, Modifications [Line Items]
Loans pledged as collateral	$ 5,500,000,000		$ 5,500,000,000		$ 5,500,000,000						$ 5,500,000,000
Forgiveness of debt
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan					0			0			0	0

Loans Receivable and Allowanc_5

Loans Receivable and Allowance for Loan Losses - Non-Covered Loans and Covered Loans by Class and Performance Status (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 8,559	$ 19,813
Non-Accrual	23,641	26,415
Current	7,188,087	6,695,032
Loans receivable, gross	7,242,995	6,768,175
Loans and leases receivable, at amortized cost or lower of cost or market	$ 7,242,995	6,768,175
Delinquent period	30 days
Due days for loan payments	90 days
Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 22,708	26,915
30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	6,259	17,070
90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,300	2,743
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	4,900
Non-Accrual	1,343	0
Current	3,501,450	3,495,600
Loans receivable, gross	3,504,540	3,502,381
Multi-family | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	1,747	1,881
Multi-family | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	4,900
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	418	103
Non-Accrual	13,287	17,392
Current	1,271,813	1,130,831
Loans receivable, gross	1,286,090	1,149,090
Commercial and industrial | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	572	764
Commercial and industrial | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	418	103
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	0	202
Non-Accrual	1,298	1,453
Current	545,647	472,501
Loans receivable, gross	555,614	484,728
Commercial real estate owner occupied | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	8,669	10,572
Commercial real estate owner occupied | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	202
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	93
Non-Accrual	158	160
Current	1,153,107	1,213,216
Loans receivable, gross	1,157,849	1,218,719
Commercial real estate non-owner occupied | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	4,584	5,250
Commercial real estate non-owner occupied | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	93
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	95,250	85,393
Loans receivable, gross	95,250	85,393
Construction | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans 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	2,321	7,628
Non-Accrual	5,522	5,420
Current	497,211	215,361
Loans receivable, gross	509,853	234,090
Residential real estate | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	4,799	5,681
Residential real estate | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,321	7,628
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	5,775	6,771
Non-Accrual	1,921	1,959
Current	72,777	78,946
Loans receivable, gross	82,589	90,227
Manufactured housing | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	2,116	2,551
Manufactured housing | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,475	4,028
Manufactured housing | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,300	2,743
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	45	116
Non-Accrual	112	31
Current	50,832	3,184
Loans receivable, gross	51,210	3,547
Other | Purchased Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	221	216
Other | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	45	116
Other | 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 0	$ 0

Loans Receivable and Allowanc_6

Loans Receivable and Allowance for Loan Losses - Schedule of Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 38,288	$ 38,458	$ 38,015	$ 37,315
Charge-offs	(527)	(2,585)	(2,377)	(5,576)
Recoveries	56	89	846	638
Provision for loan losses	2,924	2,352	4,257	5,937
Ending balance	40,741	38,314	40,741	38,314
Loans:
Individually evaluated for impairment					$ 35,260	$ 38,435
Collectively evaluated for impairment					7,185,027	6,702,825
Loans receivable, at amortized cost or lower of cost or market					7,242,995	6,768,175
Allowance for loan losses:
Individually evaluated for impairment					1,771	1,451
Collectively evaluated for impairment					35,773	32,537
Total Allowance for loan losses	38,288	38,458	38,015	37,315	40,741	38,015
Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					22,708	26,915
Allowance for loan losses:
Loans acquired with credit deterioration					3,197	4,027
Multi-family
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	12,069	12,028	12,168	11,602
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan losses	(240)	668	(339)	1,094
Ending balance	11,829	12,696	11,829	12,696
Loans:
Individually evaluated for impairment					1,343	0
Collectively evaluated for impairment					3,501,450	3,500,500
Allowance for loan losses:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					11,829	12,168
Total Allowance for loan losses	12,069	12,028	12,168	11,602	11,829	12,168
Multi-family | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					1,747	1,881
Allowance for loan losses:
Loans acquired with credit deterioration					0	0
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	12,258	11,585	10,918	11,050
Charge-offs	(90)	(2,032)	(314)	(4,079)
Recoveries	30	54	205	337
Provision for loan losses	516	966	1,905	3,265
Ending balance	12,714	10,573	12,714	10,573
Loans:
Individually evaluated for impairment					13,353	17,461
Collectively evaluated for impairment					1,272,165	1,130,865
Allowance for loan losses:
Individually evaluated for impairment					1,381	650
Collectively evaluated for impairment					10,881	9,804
Total Allowance for loan losses	12,258	11,585	10,918	11,050	12,714	10,918
Commercial and industrial | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					572	764
Allowance for loan losses:
Loans acquired with credit deterioration					452	464
Commercial real estate owner occupied
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,988	2,976	3,232	2,183
Charge-offs	0	0	(501)	0
Recoveries	0	0	326	9
Provision for loan losses	164	262	95	1,046
Ending balance	3,152	3,238	3,152	3,238
Loans:
Individually evaluated for impairment					1,335	1,448
Collectively evaluated for impairment					545,610	472,708
Allowance for loan losses:
Individually evaluated for impairment					80	642
Collectively evaluated for impairment					3,072	2,580
Total Allowance for loan losses	2,988	2,976	3,232	2,183	3,152	3,232
Commercial real estate owner occupied | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					8,669	10,572
Allowance for loan losses:
Loans acquired with credit deterioration					0	10
Commercial real estate non-owner occupied
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,698	7,786	7,437	7,894
Charge-offs	0	(77)	0	(485)
Recoveries	5	0	5	0
Provision for loan losses	(254)	(53)	(993)	247
Ending balance	6,449	7,656	6,449	7,656
Loans:
Individually evaluated for impairment					158	160
Collectively evaluated for impairment					1,153,107	1,213,309
Allowance for loan losses:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					4,298	4,630
Total Allowance for loan losses	6,698	7,786	7,437	7,894	6,449	7,437
Commercial real estate non-owner occupied | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					4,584	5,250
Allowance for loan losses:
Loans acquired with credit deterioration					2,151	2,807
Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	992	716	979	840
Charge-offs	0	0	0	0
Recoveries	11	27	231	157
Provision for loan losses	59	104	(148)	(150)
Ending balance	1,062	847	1,062	847
Loans:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					95,250	85,393
Allowance for loan losses:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					1,062	979
Total Allowance for loan losses	992	716	979	840	1,062	979
Construction | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					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	2,908	2,995	2,929	3,342
Charge-offs	0	(120)	(407)	(410)
Recoveries	6	7	69	34
Provision for loan losses	987	72	1,310	(12)
Ending balance	3,901	2,954	3,901	2,954
Loans:
Individually evaluated for impairment					8,581	9,247
Collectively evaluated for impairment					496,473	219,162
Allowance for loan losses:
Individually evaluated for impairment					306	155
Collectively evaluated for impairment					3,072	2,177
Total Allowance for loan losses	2,908	2,995	2,929	3,342	3,901	2,929
Residential real estate | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					4,799	5,681
Allowance for loan losses:
Loans acquired with credit deterioration					523	597
Manufactured housing
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	149	268	180	286
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan losses	(55)	(77)	(86)	(95)
Ending balance	94	191	94	191
Loans:
Individually evaluated for impairment					10,378	10,089
Collectively evaluated for impairment					70,095	77,587
Allowance for loan losses:
Individually evaluated for impairment					4	4
Collectively evaluated for impairment					88	82
Total Allowance for loan losses	149	268	180	286	94	180
Manufactured housing | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					2,116	2,551
Allowance for loan losses:
Loans acquired with credit deterioration					2	94
Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	226	104	172	118
Charge-offs	(437)	(356)	(1,155)	(602)
Recoveries	4	1	10	101
Provision for loan losses	1,747	410	2,513	542
Ending balance	1,540	159	1,540	159
Loans:
Individually evaluated for impairment					112	30
Collectively evaluated for impairment					50,877	3,301
Allowance for loan losses:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					1,471	117
Total Allowance for loan losses	$ 226	$ 104	$ 172	$ 118	1,540	172
Other | Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					221	216
Allowance for loan losses:
Loans acquired with credit deterioration					$ 69	$ 55

Loans Receivable and Allowanc_7

Loans Receivable and Allowance for Loan 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, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Recorded Investment Net of Charge-offs
Recorded Investment Net of Charge Offs, Total	$ 35,260		$ 35,260		$ 38,435
Unpaid Principal Balance
Unpaid Principal Balance, Total	36,627		36,627		39,089
Related Allowance	1,771		1,771		1,451
Average Recorded Investment
Average Recorded Investment, Total	36,445	$ 36,846	36,446	$ 35,614
Interest Income Recognized
Interest Income Recognized, Total	435	750	815	1,261
Multi-family
Recorded Investment Net of Charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	1,343		1,343
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	1,343		1,343
Average Recorded Investment
Average Recorded Investment, With no related allowance recorded	1,343		672
Interest Income Recognized
Interest Income Recognized, With no related allowance recorded	0		8
Commercial and industrial
Recorded Investment Net of Charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	9,888		9,888		9,138
Recorded Investment Net of Charge Offs, With an allowance recorded	3,465		3,465		8,323
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	10,224		10,224		9,287
Unpaid Principal Balance, With an allowance recorded	3,648		3,648		8,506
Related Allowance	1,381		1,381		650
Average Recorded Investment
Average Recorded Investment, With no related allowance recorded	7,765	13,345	7,623	8,796
Average Recorded Investment, With an allowance recorded	5,787	1,963	7,089	5,400
Interest Income Recognized
Interest Income Recognized, With no related allowance recorded	166	354	168	450
Interest Income Recognized, With an allowance recorded	27	0	39	22
Commercial real estate owner occupied
Recorded Investment Net of Charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	704		704		806
Recorded Investment Net of Charge Offs, With an allowance recorded	631		631		642
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	1,187		1,187		806
Unpaid Principal Balance, With an allowance recorded	631		631		642
Related Allowance	80		80		642
Average Recorded Investment
Average Recorded Investment, With no related allowance recorded	711	1,744	711	1,589
Average Recorded Investment, With an allowance recorded	336	1,056	546	950
Interest Income Recognized
Interest Income Recognized, With no related allowance recorded	0	15	0	18
Interest Income Recognized, With an allowance recorded	9	1	11	3
Commercial real estate non-owner occupied
Recorded Investment Net of Charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	158		158		160
Recorded Investment Net of Charge Offs, With an allowance recorded					0
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	271		271		272
Unpaid Principal Balance, With an allowance recorded					0
Related Allowance					0
Average Recorded Investment
Average Recorded Investment, With no related allowance recorded	1,347	184	774	989
Average Recorded Investment, With an allowance recorded		51		94
Interest Income Recognized
Interest Income Recognized, With no related allowance recorded	0	91	8	93
Interest Income Recognized, With an allowance recorded		0		0
Other
Recorded Investment Net of Charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	112		112		30
Recorded Investment Net of Charge Offs, With an allowance recorded					0
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	112		112		30
Unpaid Principal Balance, With an allowance recorded					0
Average Recorded Investment
Average Recorded Investment, With no related allowance recorded	103	44	83	50
Average Recorded Investment, With an allowance recorded		12		6
Interest Income Recognized
Interest Income Recognized, With no related allowance recorded	1	0	1	0
Interest Income Recognized, With an allowance recorded		0		0
Residential real estate
Recorded Investment Net of Charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	4,259		4,259		3,628
Recorded Investment Net of Charge Offs, With an allowance recorded	4,322		4,322		5,619
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	4,504		4,504		3,801
Unpaid Principal Balance, With an allowance recorded	4,329		4,329		5,656
Related Allowance	306		306		155
Average Recorded Investment
Average Recorded Investment, With no related allowance recorded	4,281	5,228	3,952	4,865
Average Recorded Investment, With an allowance recorded	4,398	2,862	4,760	2,729
Interest Income Recognized
Interest Income Recognized, With no related allowance recorded	23	125	25	126
Interest Income Recognized, With an allowance recorded	61	0	124	84
Manufactured housing
Recorded Investment Net of Charge-offs
Recorded Investment Net of Charge Offs, With no related allowance recorded	10,152		10,152		9,865
Recorded Investment Net of Charge Offs, With an allowance recorded	226		226		224
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	10,152		10,152		9,865
Unpaid Principal Balance, With an allowance recorded	226		226		224
Related Allowance	4		4		$ 4
Average Recorded Investment
Average Recorded Investment, With no related allowance recorded	10,147	10,243	10,011	10,038
Average Recorded Investment, With an allowance recorded	227	114	225	108
Interest Income Recognized
Interest Income Recognized, With no related allowance recorded	144	164	421	457
Interest Income Recognized, With an allowance recorded	$ 4	$ 0	$ 10	$ 8

Loans Receivable and Allowanc_8

Loans Receivable and Allowance for Loan Losses - Schedule of Accruing and Nonaccrual TDRs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 473	$ 182	$ 1,458	$ 7,560
Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded Investment			0	6,203
Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded Investment	321	182	1,093	1,357
Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 152	$ 0	352	0
Other
Financing Receivable, Impaired [Line Items]
Recorded Investment			13	$ 0
Accruing
Financing Receivable, Impaired [Line Items]
Recorded Investment			11,619		$ 12,021
Accruing | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded Investment			66		63
Accruing | Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment			37		0
Accruing | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded Investment			8,457		8,130
Accruing | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment			3,059		3,828
Accruing | Other
Financing Receivable, Impaired [Line Items]
Recorded Investment			0		0
Nonaccruing
Financing Receivable, Impaired [Line Items]
Recorded Investment			7,803		8,408
Nonaccruing | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded Investment			5,311		5,939
Nonaccruing | Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment			0		0
Nonaccruing | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded Investment			1,781		1,766
Nonaccruing | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment			698		703
Nonaccruing | Other
Financing Receivable, Impaired [Line Items]
Recorded Investment			13		0
Total
Financing Receivable, Impaired [Line Items]
Recorded Investment			19,422		20,429
Total | Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Impaired [Line Items]
Recorded Investment			5,377		6,002
Total | Commercial real estate owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment			37		0
Total | Manufactured housing
Financing Receivable, Impaired [Line Items]
Recorded Investment			10,238		9,896
Total | Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment			3,757		4,531
Total | Other
Financing Receivable, Impaired [Line Items]
Recorded Investment			$ 13		$ 0

Loans Receivable and Allowanc_9

Loans Receivable and Allowance for Loan Losses - Analysis of Loans Modified in Troubled Debt Restructuring by Type of Concession (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)Loan	Sep. 30, 2017USD ($)Loan	Sep. 30, 2018USD ($)Loan	Sep. 30, 2017USD ($)Loan
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	8	4	33	36
Recorded Investment | $	$ 473	$ 182	$ 1,458	$ 7,560
Extensions of maturity
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	0	1	1	4
Recorded Investment | $	$ 0	$ 60	$ 56	$ 6,263
Interest-rate reductions
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	8	3	32	32
Recorded Investment | $	$ 473	$ 122	$ 1,402	$ 1,297
Forgiveness of debt
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	0	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0	$ 0

Loans Receivable and Allowan_10

Loans Receivable and Allowance for Loan Losses - Summary of Loans Modified in Troubled Debt Restructurings and Related Recorded Investment (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)Loan	Sep. 30, 2017USD ($)Loan	Sep. 30, 2018USD ($)Loan	Sep. 30, 2017USD ($)Loan
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	8	4	33	36
Recorded Investment | $	$ 473	$ 182	$ 1,458	$ 7,560
Commercial and industrial (including owner occupied commercial real estate)
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan			0	3
Recorded Investment | $			$ 0	$ 6,203
Manufactured housing
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	7	4	30	33
Recorded Investment | $	$ 321	$ 182	$ 1,093	$ 1,357
Residential real estate
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	1	0	2	0
Recorded Investment | $	$ 152	$ 0	$ 352	$ 0
Other
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan			1	0
Recorded Investment | $			$ 13	$ 0

Loans Receivable and Allowan_11

Loans Receivable and Allowance for Loan Losses - Changes in Accretable Yield Related to Purchased-credit-impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Changes in Accretable Yield
Accretable yield balance, beginning of period	$ 7,403	$ 9,006	$ 7,825	$ 10,202
Accretion to interest income	(310)	(368)	(1,164)	(1,326)
Reclassification from nonaccretable difference and disposals, net	(4)	(276)	428	(514)
Accretable yield balance, end of period	$ 7,089	$ 8,362	$ 7,089	$ 8,362

Loans Receivable and Allowan_12

Loans Receivable and Allowance for Loan Losses - Credit Ratings of Covered and Non-Covered Loan Portfolio (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 7,242,995	$ 6,768,175
Pass/Satisfactory
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	6,354,727	6,300,595
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	128,208	99,279
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	116,408	40,437
Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	627,956	305,939
Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	15,696	21,925
Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	3,504,540	3,502,381
Multi-family | Pass/Satisfactory
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	3,399,892	3,438,554
Multi-family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	81,253	53,873
Multi-family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	23,395	9,954
Multi-family | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Multi-family | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,286,090	1,149,090
Commercial and industrial | Pass/Satisfactory
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,235,945	1,118,889
Commercial and industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	7,756	7,652
Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	42,389	22,549
Commercial and industrial | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Commercial and industrial | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Commercial real estate owner occupied
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	555,614	484,728
Commercial real estate owner occupied | Pass/Satisfactory
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	539,252	471,826
Commercial real estate owner occupied | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	8,793	5,987
Commercial real estate owner occupied | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	7,569	6,915
Commercial real estate owner occupied | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Commercial real estate owner occupied | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Commercial real estate non-owner occupied
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,157,849	1,218,719
Commercial real estate non-owner occupied | Pass/Satisfactory
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	1,084,388	1,185,933
Commercial real estate non-owner occupied | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	30,406	31,767
Commercial real estate non-owner occupied | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	43,055	1,019
Commercial real estate non-owner occupied | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Commercial real estate non-owner occupied | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Construction
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	95,250	85,393
Construction | Pass/Satisfactory
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	95,250	85,393
Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Construction | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Construction | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	509,853	234,090
Residential real estate | Pass/Satisfactory
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Residential real estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Residential real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Residential real estate | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	502,010	221,042
Residential real estate | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	7,843	13,048
Manufactured housing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	82,589	90,227
Manufactured housing | Pass/Satisfactory
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Manufactured housing | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Manufactured housing | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Manufactured housing | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	74,893	81,497
Manufactured housing | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	7,696	8,730
Other
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	51,210	3,547
Other | Pass/Satisfactory
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	0	0
Other | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	51,053	3,400
Other | Non-performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, gross	$ 157	$ 147

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, 2018	Jan. 01, 2018	Dec. 31, 2017	Jan. 01, 2017
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity Tier 1 capital (to risk weighted assets), Actual Amount	$ 740,968		$ 689,494
Tier 1 capital (to risk weighted assets), Actual Amount	958,418		906,963
Total capital (to risk weighted assets), Actual Amount	1,080,245		1,021,601
Tier 1 capital (to average assets), Actual Amount	$ 958,418		$ 906,963
Common equity Tier 1 (to risk weighted assets), Actual Ratio	8.703%		8.805%
Tier 1 capital (to risk weighted assets), Actual Ratio	11.257%		11.583%
Total capital (to risk weighted assets), Actual Ratio	12.688%		13.047%
Tier 1 capital (to average assets), Actual Ratio	8.913%		8.937%
Common equity Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Amount	$ 383,113		$ 352,368
Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Amount	510,818		469,824
Total capital (to risk weighted assets), For Capital Adequacy Purposes Amount	681,090		626,432
Tier 1 capital (to average assets), For Capital Adequacy Purposes Amount	$ 430,099		$ 405,949
Common equity Tier 1 (to risk weighted assets), For Capital Adequacy Purposes Ratio	4.50%	6.375%	4.50%
Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Ratio	6.00%	7.875%	6.00%
Total capital (to risk weighted assets), For Capital Adequacy Purposes Ratio	8.00%	9.875%	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	$ 542,744		$ 450,248
Tier 1 (to risk weighted assets) Required for Basel III amount	670,448		567,704
Total capital (to risk weighted assets), for Basel III amount	840,721		724,313
Tier 1 (to risk average assets), for Basel III amount	$ 430,099		$ 405,949
Common equity Tier 1 (to risk weighted assets), for Basel III ratio	6.375%		5.75%
Tier 1 capital (to risk weighted assets), for Basel III ratio	7.875%		7.25%
Total capital (to risk weighted assets), for Basel III ratio	9.875%		9.25%
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	$ 1,054,869		$ 1,023,564
Tier 1 capital (to risk weighted assets), Actual Amount	1,054,869		1,023,564
Total capital (to risk weighted assets), Actual Amount	1,204,825		1,170,666
Tier 1 capital (to average assets), Actual Amount	$ 1,054,869		$ 1,023,564
Common equity Tier 1 (to risk weighted assets), Actual Ratio	12.393%		13.081%
Tier 1 capital (to risk weighted assets), Actual Ratio	12.393%		13.081%
Total capital (to risk weighted assets), Actual Ratio	14.154%		14.961%
Tier 1 capital (to average assets), Actual Ratio	9.814%		10.092%
Common equity Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Amount	$ 383,042		$ 352,122
Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Amount	510,722		469,496
Total capital (to risk weighted assets), For Capital Adequacy Purposes Amount	680,963		625,994
Tier 1 capital (to average assets), For Capital Adequacy Purposes Amount	$ 429,939		$ 405,701
Common equity Tier 1 (to risk weighted assets), For Capital Adequacy Purposes Ratio	4.50%		4.50%	6.375%
Tier 1 capital (to risk weighted assets), For Capital Adequacy Purposes Ratio	6.00%		6.00%	7.875%
Total capital (to risk weighted assets), For Capital Adequacy Purposes Ratio	8.00%		8.00%	9.875%
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	$ 553,282		$ 508,621
Tier 1 capital (to risk weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	680,963		625,994
Total capital (to risk weighted assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	851,204		782,493
Tier 1 capital (to average assets), To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 537,423		$ 507,126
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	$ 542,642		$ 449,934
Tier 1 (to risk weighted assets) Required for Basel III amount	670,323		567,307
Total capital (to risk weighted assets), for Basel III amount	840,563		723,806
Tier 1 (to risk average assets), for Basel III amount	$ 429,939		$ 405,701
Common equity Tier 1 (to risk weighted assets), for Basel III ratio	6.375%		5.75%
Tier 1 capital (to risk weighted assets), for Basel III ratio	7.875%		7.25%
Total capital (to risk weighted assets), for Basel III ratio	9.875%		9.25%
Tier 1 capital (to average assets), for Basel III ratio	4.00%		4.00%

Regulatory Capital - Narrative

Regulatory Capital - Narrative (Details)	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017	Jan. 01, 2017	Jan. 01, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
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%
Capital conservation buffer, excess of minimum capital ratio					2.50%
Common equity Tier 1 (to risk weighted assets), for capital adequacy purposes ratio	4.50%	6.375%	4.50%
Tier 1 capital (to risk weighted assets), for capital adequacy purposes ratio	6.00%	7.875%	6.00%
Total capital (to risk weighted assets), for capital adequacy purposes ratio	8.00%	9.875%	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%	6.375%
Tier 1 capital (to risk weighted assets), for capital adequacy purposes ratio	6.00%		6.00%	7.875%
Total capital (to risk weighted assets), for capital adequacy purposes ratio	8.00%		8.00%	9.875%

Disclosures About Fair Value _3

Disclosures About Fair Value of Financial Instruments - Narrative (Detail)	9 Months Ended
	Sep. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale, average life from purchase to sale	25 days

Disclosures About Fair Value _4

Disclosures About Fair Value of Financial Instruments - Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Carrying Amount	$ 666,034	$ 146,323	$ 219,480	$ 264,709
Cash and cash equivalents, Estimated Fair Value	666,034	146,323
Debt securities, available for sale	667,032	471,371
Debt securities, available for sale, Estimated Fair Value	667,032
Investment securities, at fair value		471,371
Investments securities, available for sale, fair value		471,371
Equity securities, carrying amount	1,819
Equity securities, Estimated Fair Value	1,819
Loans held for sale, Carrying Amount	1,383	146,077
Loans held for sale, Estimated Fair Value	1,383	146,251
Loans receivable mortgage warehouse, carrying amount	1,516,327	1,793,408
Loans receivable, net of allowance for loan losses, Carrying Amount	8,715,536	8,523,651
Loans receivable, net of allowance for loan losses, Estimated Fair Value	8,646,346	8,470,171
FHLB, Federal Reserve Bank and other restricted stock, Carrying Amount	74,206	105,918
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value	74,206	105,918
Derivative assets	22,613	9,752
Deposits, Carrying Amount	8,513,714	6,800,142
Deposits, Estimated Fair Value	8,506,804	6,796,095
Federal funds purchased, Carrying Amount	0	155,000
Federal funds purchased, Estimated Fair Value		155,000
FHLB advances, Carrying Amount	835,000	1,611,860
FHLB advances, Estimated Fair Value	834,968	1,611,603
Other borrowings, Carrying Amount	123,779	186,497
Other borrowings, Estimated Fair Value	124,724	193,557
Subordinated debt, Carrying Amount	108,953	108,880
Subordinated debt, Estimated Fair Value	114,400	115,775
Derivative liabilities	15,684	10,074
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	666,034	146,323
Debt securities, available for sale, Estimated Fair Value	0
Investments securities, available for sale, fair value		3,352
Equity securities, Estimated Fair Value	1,819
Loans held for sale, Estimated Fair Value	0	0
Loans 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	6,120,233	4,894,449
Federal funds purchased, Estimated Fair Value		155,000
FHLB advances, Estimated Fair Value	0	881,860
Other borrowings, Estimated Fair Value	0	65,072
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	667,032
Investments securities, available for sale, fair value		468,019
Equity securities, Estimated Fair Value	0
Loans held for sale, Estimated Fair Value	1,383	1,886
Loans receivable, net of allowance for loan losses, Estimated Fair Value	1,516,327	1,793,408
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value	74,206	105,918
Derivative assets	22,491	9,692
Deposits, Estimated Fair Value	2,386,571	1,901,646
Federal funds purchased, Estimated Fair Value		0
FHLB advances, Estimated Fair Value	834,968	729,743
Other borrowings, Estimated Fair Value	124,724	128,485
Subordinated debt, Estimated Fair Value	114,400	115,775
Derivative liabilities	15,684	10,074
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
Investments securities, available for sale, fair value		0
Equity securities, Estimated Fair Value	0
Loans held for sale, Estimated Fair Value	0	144,365
Loans receivable, net of allowance for loan losses, Estimated Fair Value	7,130,019	6,676,763
FHLB, Federal Reserve Bank and other restricted stock, Estimated Fair Value	0	0
Derivative assets	122	60
Deposits, Estimated Fair Value	0	0
Federal funds purchased, Estimated Fair Value		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, 2018	Dec. 31, 2017
Liabilities
Specific reserves related to impaired loans	$ 1,771	$ 1,451
Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	2,209,174	2,420,782
Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	8,373	15,351
Equity securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	1,819
Derivative assets | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	22,613	9,752
Loans held for sale - fair value option | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	1,383	146,251
Loans receivable, mortgage warehouse - fair value option | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	1,516,327	1,793,408
Derivative liabilities | Fair Value, Measurements, Recurring
Liabilities
Financial Liabilities Fair Value Disclosure	15,684	10,074
Impaired loans, net of specific reserves
Liabilities
Specific reserves related to impaired loans	1,771	1,451
Impaired loans, net of specific reserves | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	7,295	13,902
Other real estate owned | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	1,078	1,449
Available-for-sale Securities | Agency-guaranteed residential mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	305,418	183,458
Available-for-sale Securities | Agency-guaranteed commercial real estate mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure		238,472
Available-for-sale Securities | Corporate notes | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	361,614	46,089
Available-for-sale Securities | Equity securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure		3,352
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	1,819	3,352
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) | Equity securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	1,819
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 | Agency-guaranteed commercial real estate mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure		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		3,352
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	2,207,233	2,273,005
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	0	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	22,491	9,692
Significant Other Observable Inputs (Level 2) | Loans held for sale - fair value option | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	1,383	1,886
Significant Other Observable Inputs (Level 2) | Loans receivable, mortgage warehouse - fair value option | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	1,516,327	1,793,408
Significant Other Observable Inputs (Level 2) | Derivative liabilities | Fair Value, Measurements, Recurring
Liabilities
Financial Liabilities Fair Value Disclosure	15,684	10,074
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	305,418	183,458
Significant Other Observable Inputs (Level 2) | Available-for-sale Securities | Agency-guaranteed commercial real estate mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure		238,472
Significant Other Observable Inputs (Level 2) | Available-for-sale Securities | Corporate notes | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	361,614	46,089
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	122	144,425
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	8,373	15,351
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	122	60
Significant Unobservable Inputs (Level 3) | Loans held for sale - fair value option | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure	0	144,365
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	7,295	13,902
Significant Unobservable Inputs (Level 3) | Other real estate owned | Fair Value, Measurements, Nonrecurring
Assets
Assets, Fair Value Disclosure	1,078	1,449
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 | Agency-guaranteed commercial real estate mortgage-backed securities | Fair Value, Measurements, Recurring
Assets
Assets, Fair Value Disclosure		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, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning	$ 133	$ 102	$ 60	$ 45
Issuances	122	103	338	300
Settlements	(133)	(102)	(276)	(242)
Balance at ending	$ 122	$ 103	$ 122	$ 103

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, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 1,450	$ 1,726
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	12.00%
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%
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	90.00%	90.00%
Fair Value Estimate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loan commitments	$ 122	$ 60
Fair Value Estimate | Collateral Appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	5,211	13,902
Other real estate owned	1,078	$ 1,449
Fair Value Estimate | Business Asset Valuation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 2,084
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	6.00%
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	90.00%	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	63.00%
Maximum | Other real estate owned | Collateral Appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted average range	10.00%	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	90.00%	90.00%

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Additional Information (Detail) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018USD ($)derivativeswap	Sep. 30, 2018USD ($)derivativeswap	Dec. 31, 2017USD ($)derivativeswap
Derivative Instruments, Gain (Loss) [Line Items]
Reclassification adjustment from accumulated other comprehensive income		$ (1)
Length of hedging exposure to variability in future cash flows (months)		33 months
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	$ 6.1	$ 6.1	$ 2.7
Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	500	500
Interest Rate Swaps | Derivative Designated as Cash Flow Hedges | Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 800	$ 800	$ 550
Number of outstanding interest rate derivatives (derivative) | derivative	8	8	9
Interest Rate Swaps | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 956.8	$ 956.8	$ 800.5
Number of interest rate swaps (swap) | swap	98	98	76
Credit Contract | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 95.5	$ 95.5	$ 80.5
Other Non-interest Income | Interest Rate Swaps | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain on cash flow hedge ineffectiveness	$ 2.8

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Fair Value of Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets, Fair Value	$ 20,688	$ 5,930
Derivative Liabilities, Fair Value	1,924	5,058
Other Assets | Derivative Designated as Cash Flow Hedges | Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets, Fair Value	3,859	816
Other Assets | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets, Fair Value	18,754	8,936
Other Assets | Not Designated as Hedging Instrument | Residential Mortgage Loan Commitments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets, Fair Value	122	60
Other Assets | Not Designated as Hedging Instrument | Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets, Fair Value	18,596	8,776
Other Assets | Not Designated as Hedging Instrument | Credit Contract
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets, Fair Value	36	100
Other Liabilities | Derivative Designated as Cash Flow Hedges | Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities, Fair Value	0	1,140
Other Liabilities | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities, Fair Value	15,684	8,934
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	15,653	8,897
Other Liabilities | Not Designated as Hedging Instrument | Credit Contract
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities, Fair Value	$ 31	$ 37

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, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivatives	$ 4,062	$ 171	$ 6,830	$ (189)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	2,519	(572)	2,647	(2,166)
Interest Rate Swaps | Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivatives
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income	2,519		2,647
Interest Expense | Interest Rate Swaps | Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivatives	3,006	104	5,055	(115)
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income	(303)		(175)
Amount of Loss Reclassified from Accumulated OCI into Income		(572)		(2,166)
Other Interest income | Interest Rate Swaps | Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivatives
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income	2,822		2,822
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	1,284	86	1,653	482
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	1,139	91	1,472	429
Not Designated as Hedging Instrument | Other Non-interest Income | Credit Contract
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Earnings	156	(6)	119	(5)
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	$ (11)	$ 1	$ 62	$ 58

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, 2018	Dec. 31, 2017
Offsetting Assets [Line Items]
Net Amounts of Assets Presented in the Consolidated Balance Sheet	$ 22,613	$ 9,752
Interest Rate Swaps
Offsetting Assets [Line Items]
Gross Amount of Recognized Assets	20,688	5,930
Gross Amounts Offset in the Consolidated Balance Sheet	0	0
Net Amounts of Assets Presented in the Consolidated Balance Sheet	20,688	5,930
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	19,330	5,070
Gross amounts not offset in the consolidated balance sheet, Net amount	$ 1,358	$ 860

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, 2018	Dec. 31, 2017
Offsetting Liabilities [Line Items]
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet	$ 15,684	$ 10,074
Interest Rate Swaps
Offsetting Liabilities [Line Items]
Gross Amount of Recognized Liabilities	1,924	5,058
Gross Amounts Offset in the Consolidated Balance Sheet	0	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet	1,924	5,058
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	2	4,872
Gross amounts not offset in the consolidated balance sheet, Net amount	$ 1,922	$ 186

Business Segments (Details)

Business Segments (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)Segment	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments (segment) | Segment	2
Interest income	$ 110,045	$ 98,285	$ 314,649	$ 275,232
Interest expense	46,044	30,266	118,295	76,189
Net interest income	64,001	68,019	196,354	199,043
Provision for loan losses	2,924	2,352	4,257	5,937
Total non-interest income	2,084	18,026	39,120	59,170
Non-interest expense	57,104	61,040	163,134	160,818
Income before income tax expense	6,057	22,653	68,083	91,458
Income tax expense (benefit)	28	14,899	14,250	34,236
Net income (loss)	6,029	7,754	53,833	57,222
Preferred stock dividends	3,615	3,615	10,844	10,844
Net income (loss) available to common shareholders	2,414	4,139	42,989	46,378
Goodwill and other intangibles	16,825		16,825		$ 16,295
Assets	10,617,104		10,617,104		9,839,555
Deposits	8,513,714		8,513,714		$ 6,800,142
Combined Business Segments
Segment Reporting Information [Line Items]
Interest income	110,045	98,285	314,649	275,232
Interest expense	46,044	30,266	118,295	76,189
Net interest income	64,001	68,019	196,354	199,043
Provision for loan losses	2,924	2,352	4,257	5,937
Total non-interest income	2,084	18,026	39,120	59,170
Non-interest expense	57,104	61,040	163,134	160,818
Income before income tax expense	6,057	22,653	68,083	91,458
Income tax expense (benefit)	28	14,899	14,250	34,236
Net income (loss)	6,029	7,754	53,833	57,222
Preferred stock dividends	3,615	3,615	10,844	10,844
Net income (loss) available to common shareholders	2,414	4,139	42,989	46,378
Goodwill and other intangibles	16,825	16,604	16,825	16,604
Assets	10,617,104	10,471,829	10,617,104	10,471,829
Deposits	8,513,714	7,597,076	8,513,714	7,597,076
Non-deposit Liabilities	$ 1,148,578	$ 1,964,111	1,148,578	1,964,111
Operating Segments | Community Business Banking
Segment Reporting Information [Line Items]
Effective tax rate	24.57%	37.25%
Interest income	$ 106,156	$ 95,585	302,820	265,524
Interest expense	45,982	30,250	118,081	76,134
Net interest income	60,174	65,335	184,739	189,390
Provision for loan losses	2,502	1,874	3,128	5,459
Total non-interest income	(7,756)	4,190	8,147	16,587
Non-interest expense	36,115	33,990	108,168	94,704
Income before income tax expense	13,801	33,661	81,590	105,814
Income tax expense (benefit)	1,930	18,999	17,567	39,584
Net income (loss)	11,871	14,662	64,023	66,230
Preferred stock dividends	3,615	3,615	10,844	10,844
Net income (loss) available to common shareholders	8,256	11,047	53,179	55,386
Goodwill and other intangibles	3,629	3,632	3,629	3,632
Assets	10,542,175	10,405,452	10,542,175	10,405,452
Deposits	7,781,225	6,815,994	7,781,225	6,815,994
Non-deposit Liabilities	1,134,251	1,947,213	1,134,251	1,947,213
Operating Segments | BankMobile
Segment Reporting Information [Line Items]
Interest income	3,889	2,700	11,829	9,708
Interest expense	62	16	214	55
Net interest income	3,827	2,684	11,615	9,653
Provision for loan losses	422	478	1,129	478
Total non-interest income	9,840	13,836	30,973	42,583
Non-interest expense	20,989	27,050	54,966	66,114
Income before income tax expense	(7,744)	(11,008)	(13,507)	(14,356)
Income tax expense (benefit)	(1,902)	(4,100)	(3,317)	(5,348)
Net income (loss)	(5,842)	(6,908)	(10,190)	(9,008)
Preferred stock dividends	0	0	0	0
Net income (loss) available to common shareholders	(5,842)	(6,908)	(10,190)	(9,008)
Goodwill and other intangibles	13,196	12,972	13,196	12,972
Assets	74,929	66,377	74,929	66,377
Deposits	732,489	781,082	732,489	781,082
Non-deposit Liabilities	14,327	16,898	14,327	16,898
Segment Reconciling Items | BankMobile
Segment Reporting Information [Line Items]
Interest income	$ 3,900	$ 2,700	$ 11,800	$ 9,700

Non-Interest Revenues - Narrati

Non-Interest Revenues - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with customer, liability	$ 2,796		$ 2,796		$ 2,001
Contract with customer, asset	1,500		1,500		$ 1,100
Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 1,200	$ 1,200	$ 3,900	$ 4,400
BankMobile | Minimum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with customer, timing of satisfaction of performance obligation and payment			P3Y
BankMobile | Maximum
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with customer, timing of satisfaction of performance obligation and payment			P5Y

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, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interchange and card revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 7,084	$ 9,570	$ 23,127	$ 31,729
Deposit fees
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	2,002	2,659	5,726	7,918
Accounting Standards Update 2014-09
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,200	1,200	3,900	4,400
Total revenue from contracts with customers	10,297	13,341	32,352	42,933
Accounting Standards Update 2014-09 | Community Business Banking
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	492	536	1,480	1,446
Accounting Standards Update 2014-09 | BankMobile
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	9,805	12,805	30,872	41,487
Accounting Standards Update 2014-09 | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
University Fees - Card and Disbursement Fees	261	283	772	878
Total revenue from contracts with customers	9,347	12,512	29,625	40,525
Accounting Standards Update 2014-09 | Transferred at Point in Time | Interchange and card revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	7,084	9,570	23,127	31,729
Accounting Standards Update 2014-09 | Transferred at Point in Time | Deposit fees
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	2,002	2,659	5,726	7,918
Accounting Standards Update 2014-09 | Transferred at Point in Time | Community Business Banking
Disaggregation of Revenue [Line Items]
University Fees - Card and Disbursement Fees	0	0	0	0
Total revenue from contracts with customers	492	536	1,480	1,446
Accounting Standards Update 2014-09 | Transferred at Point in Time | Community Business Banking | Interchange and card revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	181	215	588	544
Accounting Standards Update 2014-09 | Transferred at Point in Time | Community Business Banking | Deposit fees
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	311	321	892	902
Accounting Standards Update 2014-09 | Transferred at Point in Time | BankMobile
Disaggregation of Revenue [Line Items]
University Fees - Card and Disbursement Fees	261	283	772	878
Total revenue from contracts with customers	8,855	11,976	28,145	39,079
Accounting Standards Update 2014-09 | Transferred at Point in Time | BankMobile | Interchange and card revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	6,903	9,355	22,539	31,185
Accounting Standards Update 2014-09 | Transferred at Point in Time | BankMobile | Deposit fees
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,691	2,338	4,834	7,016
Accounting Standards Update 2014-09 | Transferred over Time
Disaggregation of Revenue [Line Items]
University Fees - Subscription Revenue	950	829	2,727	2,408
Total revenue from contracts with customers	950	829	2,727	2,408
Accounting Standards Update 2014-09 | Transferred over Time | Community Business Banking
Disaggregation of Revenue [Line Items]
University Fees - Subscription Revenue	0	0	0	0
Total revenue from contracts with customers	0	0	0	0
Accounting Standards Update 2014-09 | Transferred over Time | BankMobile
Disaggregation of Revenue [Line Items]
University Fees - Subscription Revenue	950	829	2,727	2,408
Total revenue from contracts with customers	$ 950	$ 829	$ 2,727	$ 2,408

Subsequent Event - Narrative (D

Subsequent Event - Narrative (Details) $ in Millions	Oct. 18, 2018USD ($)
Subsequent Event
Subsequent Event [Line Items]
Payments for merger and acquisition related costs	$ 2.7