Sterling Bancorp (STL) 10-Q 1 Nov 19 2019 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2019	Oct. 31, 2019
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2019
Entity File Number	001-35385
Entity Registrant Name	STERLING BANCORP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	80-0091851
Entity Address, Address Line One	400 Rella Boulevard,
Entity Address, City or Town	Montebello,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10901
City Area Code	845
Local Phone Number	369-8040
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Smaller Reporting Company	false
Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		202,046,172
Entity Central Index Key	0001070154
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Stock, Par Value $0.01 Per Share
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	STL
Security Exchange Name	NYSE
Depositary Shares, Each Representing 1/40th Interest In A Share Of 6.50% Non-Cumulative Perpetual Preferred Stock, Series A
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing 1/40 interest in a share of 6.50% Non-Cumulative Perpetual Preferred Stock, Series A
Trading Symbol	STLPRA
Security Exchange Name	NYSE

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
ASSETS:
Cash and due from banks	$ 545,603	$ 438,110
Securities:
Available for sale, at fair value	3,061,419	3,870,563
Held to maturity, at amortized cost (fair value of $2,061,887 and $2,740,522 at September 30, 2019 and December 31, 2018, respectively)	1,985,592	2,796,617
Total securities	5,047,011	6,667,180
Loans held for sale	4,627	1,565,979
Portfolio loans	20,830,163	19,218,530
Allowance for loan losses	(104,735)	(95,677)
Portfolio loans, net	20,725,428	19,122,853
Federal Home Loan Bank (“FHLB”) and Federal Reserve Bank (“FRB”) stock, at cost	276,929	369,690
Accrued interest receivable	104,881	107,111
Premises and equipment, net	238,723	264,194
Goodwill	1,657,814	1,613,033
Other intangible assets, net	115,149	129,545
Bank owned life insurance (“BOLI”)	609,720	653,995
Other real estate owned	13,006	19,377
Other assets	738,774	432,240
Total assets	30,077,665	31,383,307
LIABILITIES:
Deposits	21,579,324	21,214,148
FHLB borrowings	2,800,907	4,838,772
Repurchase agreements	26,544	21,338
Senior Notes	173,652	181,130
Subordinated Notes	173,121	172,943
Mortgage escrow funds	84,595	72,891
Other liabilities	718,555	453,232
Total liabilities	25,556,698	26,954,454
Commitments and Contingent liabilities (See Note 17. “Commitments and Contingencies”)
STOCKHOLDERS’ EQUITY:
Preferred stock (par value $0.01 per share; 10,000,000 shares authorized; 135,000 shares issued and outstanding at September 30, 2019 and December 31, 2018)	137,799	138,423
Common stock (par value $0.01 per share; 310,000,000 shares authorized at September 30, 2019 and December 31, 2018; 229,872,925 shares issued at September 30, 2019 and December 31, 2018; 202,392,884 and 216,227,852 shares outstanding at September 30, 2019 and December 31, 2018, respectively)	2,299	2,299
Additional paid-in capital	3,762,046	3,776,461
Treasury stock, at cost (27,480,041 shares at September 30, 2019 and 13,645,073 shares at December 31, 2018)	(501,814)	(213,935)
Retained earnings	1,075,503	791,550
Accumulated other comprehensive income (loss), net of tax expense (benefit) of $17,239 at September 30, 2019 and $(25,429) at December 31, 2018	45,134	(65,945)
Total stockholders’ equity	4,520,967	4,428,853
Total liabilities and stockholders’ equity	$ 30,077,665	$ 31,383,307

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Securities held to maturity, fair value	$ 2,061,887	$ 2,740,522
Preferred stock, par value (USD per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	135,000	135,000
Preferred stock, shares outstanding (in shares)	135,000	135,000
Common stock, par value (USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	310,000,000	310,000,000
Common stock, shares issued (in shares)	229,872,925	229,872,925
Common stock, shares outstanding (in shares)	202,392,884	216,227,852
Treasury stock, shares (in shares)	27,480,041	13,645,073
Accumulated other comprehensive loss, tax expense (benefit)	$ 17,239	$ (25,429)

Consolidated Income Statements

Consolidated Income Statements (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest and dividend income:
Loans and loan fees	$ 254,414	$ 257,211	$ 772,992	$ 746,079
Securities taxable	21,977	29,765	74,456	85,856
Securities non-taxable	13,491	15,244	42,771	45,959
Other earning assets	5,327	6,805	16,847	17,382
Total interest and dividend income	295,209	309,025	907,066	895,276
Interest expense:
Deposits	48,330	35,974	142,454	88,645
Borrowings	23,558	29,102	73,946	82,098
Total interest expense	71,888	65,076	216,400	170,743
Net interest income	223,321	243,949	690,666	724,533
Provisions for loan losses	13,700	9,500	35,400	35,500
Net interest income after provision for loan losses	209,621	234,449	655,266	689,033
Non-interest income:
Deposit fees and service charges	6,582	6,333	19,891	20,319
Accounts receivable management / factoring commissions and other fees	6,049	5,595	17,265	16,292
Bank owned life insurance	8,066	3,733	15,900	11,591
Loan commissions and fees	6,285	4,142	15,431	12,114
Investment management fees	1,758	1,943	5,708	5,889
Net gain (loss) on sale of securities	6,882	(56)	(6,830)	(5,902)
Gain on termination of pension plan	12,097	0	12,097	0
Gain on sale of fixed assets	0	0	0	11,800
Gain on sale of residential mortgage loans	0	0	8,313	0
Other	4,111	2,455	10,710	8,617
Total non-interest income	51,830	24,145	98,485	80,720
Non-interest expense:
Compensation and benefits	52,850	54,823	163,313	165,662
Stock-based compensation plans	4,565	3,115	14,293	9,304
Occupancy and office operations	15,836	16,558	48,477	51,956
Information technology	8,545	10,699	26,267	32,412
Amortization of intangible assets	4,785	5,865	14,396	17,782
FDIC insurance and regulatory assessments	3,194	6,043	9,526	16,885
Other real estate owned expense, net	79	1,497	754	1,635
Charge for asset write-downs, retention and severance	0	0	3,344	13,132
Impairment related to financial centers and real estate consolidation strategy	0	0	14,398	0
Other	16,601	13,173	53,619	39,680
Total non-interest expense	106,455	111,773	348,387	348,448
Income before income tax expense	154,996	146,821	405,364	421,305
Income tax expense	32,549	27,171	85,020	88,542
Net income	122,447	119,650	320,344	332,763
Preferred stock dividend	1,982	1,993	5,958	5,988
Net income available to common stockholders	$ 120,465	$ 117,657	$ 314,386	$ 326,775
Weighted average common shares:
Basic (in shares)	203,090,365	225,088,511	207,685,051	224,969,121
Diluted (in shares)	203,566,582	225,622,895	208,108,575	225,504,463
Earnings per common share:
Basic (USD per share)	$ 0.59	$ 0.52	$ 1.51	$ 1.45
Diluted (USD per share)	$ 0.59	$ 0.52	$ 1.51	$ 1.45

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 122,447	$ 119,650	$ 320,344	$ 332,763
Other comprehensive income (loss), before tax:
Change in unrealized holding gains (losses) on securities available for sale	29,085	(27,083)	168,592	(128,496)
Unrealized loss on transfer of securities held to maturity to available for sale	0	0	(11,813)	0
Reclassification adjustment for net realized (gains) losses included in net income	(6,882)	56	6,830	5,902
Accretion of net unrealized loss on securities transferred to held to maturity	119	225	2,658	686
Change in the actuarial loss of defined benefit plan and post-retirement benefit plans	(15,706)	415	(12,757)	1,150
Total other comprehensive income (loss), before tax	6,616	(26,387)	153,510	(120,758)
Deferred tax (expense) benefit related to other comprehensive (loss) income	(1,828)	7,293	(42,431)	33,378
Other comprehensive income (loss), net of tax	4,788	(19,094)	111,079	(87,380)
Comprehensive income	$ 127,235	$ 100,556	$ 431,423	$ 245,383

Consolidated Statement of Chang

Consolidated Statement of Changes In Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common stock	Preferred stock	Additional paid-in capital	Treasury stock	Retained earnings	Accumulated other comprehensive (loss)
Balance (in shares) at Dec. 31, 2017		224,782,694
Balance, beginning at Dec. 31, 2017	$ 4,240,178	$ 2,299	$ 139,220	$ 3,780,908	$ (58,039)	$ 401,956	$ (26,166)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	98,872					98,872
Other comprehensive income (loss)	(47,749)						(47,749)
Stock options & other stock transactions, net (in shares)		28,794
Stock options & other stock transactions, net	331			2	375	(46)
Restricted stock awards, net (in shares)		654,778
Restricted stock awards, net	10			(14,630)	6,562	8,078
Cash dividends declared, common	(15,693)					(15,693)
Cash dividends declared, preferred	(2,194)		(195)			(1,999)
Reclassification of the stranded income tax effects from the enactment of the Tax Cuts and Jobs Act from accumulated other comprehensive (loss)						5,129	(5,129)
Balance (in shares) at Mar. 31, 2018		225,466,266
Balance, ending at Mar. 31, 2018	4,273,755	$ 2,299	139,025	3,766,280	(51,102)	496,297	(79,044)
Balance (in shares) at Dec. 31, 2017		224,782,694
Balance, beginning at Dec. 31, 2017	4,240,178	$ 2,299	139,220	3,780,908	(58,039)	401,956	(26,166)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	332,763
Other comprehensive income (loss)	$ (87,380)
Purchase of treasury stock (in shares)	0
Reclassification of the stranded income tax effects from the enactment of the Tax Cuts and Jobs Act from accumulated other comprehensive (loss)	$ (5,129)
Balance (in shares) at Sep. 30, 2018		225,446,089
Balance, ending at Sep. 30, 2018	4,438,303	$ 2,299	138,627	3,773,164	(51,973)	694,861	(118,675)
Balance (in shares) at Dec. 31, 2017		224,782,694
Balance, beginning at Dec. 31, 2017	4,240,178	$ 2,299	139,220	3,780,908	(58,039)	401,956	(26,166)
Balance (in shares) at Dec. 31, 2018		216,227,852
Balance, ending at Dec. 31, 2018	4,428,853	$ 2,299	138,423	3,776,461	(213,935)	791,550	(65,945)
Balance (in shares) at Mar. 31, 2018		225,466,266
Balance, beginning at Mar. 31, 2018	4,273,755	$ 2,299	139,025	3,766,280	(51,102)	496,297	(79,044)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	114,241					114,241
Other comprehensive income (loss)	(20,537)						(20,537)
Stock options & other stock transactions, net (in shares)		7,500
Stock options & other stock transactions, net	75			2	91	(18)
Restricted stock awards, net (in shares)		(3,512)
Restricted stock awards, net	3,133			3,223	(258)	168
Cash dividends declared, common	(15,739)					(15,739)
Cash dividends declared, preferred	(2,193)		(197)			(1,996)
Balance (in shares) at Jun. 30, 2018		225,470,254
Balance, ending at Jun. 30, 2018	4,352,735	$ 2,299	138,828	3,769,505	(51,269)	592,953	(99,581)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	119,650					119,650
Other comprehensive income (loss)	(19,094)						(19,094)
Stock options & other stock transactions, net (in shares)		13,500
Stock options & other stock transactions, net	156			2	164	(10)
Restricted stock awards, net (in shares)		(37,665)
Restricted stock awards, net	2,789			3,657	(868)
Cash dividends declared, common	(15,739)					(15,739)
Cash dividends declared, preferred			(201)			(1,993)
Balance (in shares) at Sep. 30, 2018		225,446,089
Balance, ending at Sep. 30, 2018	4,438,303	$ 2,299	138,627	3,773,164	(51,973)	694,861	(118,675)
Balance (in shares) at Dec. 31, 2018		216,227,852
Balance, beginning at Dec. 31, 2018	4,428,853	$ 2,299	138,423	3,776,461	(213,935)	791,550	(65,945)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	101,437					101,437
Other comprehensive income (loss)	59,335						59,335
Stock options & other stock transactions, net (in shares)		3,893
Stock options & other stock transactions, net	55				49	6
Restricted stock awards, net (in shares)		1,331,674
Restricted stock awards, net	1,105			(24,626)	12,818	12,913
Cash dividends declared, common	(15,079)					(15,079)
Cash dividends declared, preferred	(2,194)		(205)			(1,989)
Purchase of treasury stock (in shares)		(8,002,595)
Purchase of treasury stock	(154,289)				(154,289)
Balance (in shares) at Mar. 31, 2019		209,560,824
Balance, ending at Mar. 31, 2019	4,419,223	$ 2,299	138,218	3,751,835	(355,357)	888,838	(6,610)
Balance (in shares) at Dec. 31, 2018		216,227,852
Balance, beginning at Dec. 31, 2018	4,428,853	$ 2,299	138,423	3,776,461	(213,935)	791,550	(65,945)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	320,344
Other comprehensive income (loss)	111,079
Cash dividends declared, preferred	$ (2,194)
Purchase of treasury stock (in shares)	(15,312,694)
Balance (in shares) at Sep. 30, 2019		202,392,884
Balance, ending at Sep. 30, 2019	$ 4,520,967	$ 2,299	137,799	3,762,046	(501,814)	1,075,503	45,134
Balance (in shares) at Mar. 31, 2019		209,560,824
Balance, beginning at Mar. 31, 2019	4,419,223	$ 2,299	138,218	3,751,835	(355,357)	888,838	(6,610)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	96,460					96,460
Other comprehensive income (loss)	46,956						46,956
Stock options & other stock transactions, net (in shares)		168,169
Stock options & other stock transactions, net	1,834				1,410	424
Restricted stock awards, net (in shares)		(39,697)
Restricted stock awards, net	4,404			5,291	(887)
Cash dividends declared, common	(14,611)					(14,611)
Cash dividends declared, preferred	(2,194)		(207)			(1,987)
Purchase of treasury stock (in shares)		(4,502,053)
Purchase of treasury stock	(92,914)				(92,914)
Balance (in shares) at Jun. 30, 2019		205,187,243
Balance, ending at Jun. 30, 2019	4,459,158	$ 2,299	138,011	3,757,126	(447,748)	969,124	40,346
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	122,447					122,447
Other comprehensive income (loss)	4,788						4,788
Stock options & other stock transactions, net (in shares)		43,935
Stock options & other stock transactions, net	508				367	141
Restricted stock awards, net (in shares)		(30,248)
Restricted stock awards, net	4,304			4,920	(694)	78
Cash dividends declared, common	(14,305)					(14,305)
Cash dividends declared, preferred	(2,194)		(212)			(1,982)
Purchase of treasury stock (in shares)		(2,808,046)
Purchase of treasury stock	(53,739)				(53,739)
Balance (in shares) at Sep. 30, 2019		202,392,884
Balance, ending at Sep. 30, 2019	$ 4,520,967	$ 2,299	$ 137,799	$ 3,762,046	$ (501,814)	$ 1,075,503	$ 45,134

Consolidated Statement of Cha_2

Consolidated Statement of Changes In Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends paid, common (usd per share)	$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.07
Cash dividends paid, preferred (usd per share)	$ 16,250	$ 16.25	$ 16.25	$ 16.25	$ 16.25	$ 16.25

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income	$ 320,344	$ 332,763
Adjustments to reconcile net income to net cash provided by operating activities:
Provisions for loan losses	35,400	35,500
Net (gain) from write-downs and sales of other real estate owned	(268)	(796)
Net (gain) on extinguishment of Senior Notes	(46)	0
Depreciation of premises and equipment	14,807	15,214
Impairment on fixed assets	10,751	0
Impairment of early termination of leases	3,647
Asset write-downs, retention and severance compensation and other restructuring charges	3,344	13,132
Income from termination of defined benefit pension plan	(12,079)	0
Amortization of intangible assets	14,396	17,782
Amortization of low income housing tax credits	12,510	3,732
Net loss on sale of securities	6,830	5,902
Net gain on loans held for sale	(8,313)	(25)
Net gain on sale of premises and equipment	0	(11,800)
Net amortization of premiums on securities	26,243	29,759
Amortization of premium on certificates of deposit	(2,977)	(4,850)
Net accretion of purchase discount and amortization of net deferred loan costs	(66,583)	(85,129)
Net accretion of debt issuance costs and amortization of premium on borrowings	(1,211)	(1,081)
Restricted stock compensation expense	14,293	9,299
Stock option compensation expense	0	5
Originations of loans held for sale	(4,500)	(52,919)
Proceeds from sales of loans held for sale	28,685	27,148
Increase in cash surrender value of bank owned life insurance	(15,900)	(11,591)
Deferred income tax expense	26,203	45,589
Other adjustments (principally net changes in other assets and other liabilities)	(62,280)	(79,631)
Net cash provided by operating activities	343,296	288,003
Purchases of securities:
Available for sale	(66,148)	(753,638)
Held to maturity	(10,214)	(140,976)
Proceeds from maturities, calls and other principal payments on securities:
Available for sale	347,103	271,558
Held to maturity	93,729	135,327
Proceeds from sales of securities available for sale	1,386,236	117,810
Proceeds from sales of securities held to maturity	0	254
Portfolio loan originations, net	(975,741)	10,619
Portfolio loans purchased	0	(37,668)
Proceeds from sale of residential mortgage loans	1,409,334	0
Redemptions (purchases) of FHLB and FRB stock, net	92,761	(67,343)
Proceeds from sales of other real estate owned	10,749	16,786
Purchases of premises and equipment	(18,818)	(16,369)
Proceeds from bank owned life insurance	63,675	2,950
Proceeds from sale of premises and equipment	18,731	35,261
Purchases of low income housing tax credits	(63,495)	(3,655)
Cash paid for acquisition, net	(515,692)	(484,385)
Net cash provided by (used in) investing activities	1,772,210	(913,469)
Cash flows from financing activities:
Net (decrease) increase in transaction, savings and money market deposits	(72,341)	786,541
Net increase in certificates of deposit	440,494	136,162
Net (decrease) in short-term FHLB borrowings	(987,000)	(555,000)
Advances of term FHLB borrowings	2,200,000	2,975,000
Repayments of term FHLB borrowings	(3,250,000)	(2,500,000)
Repayment of Senior Notes	(6,954)	(77,000)
Net increase (decrease) in other borrowings	5,206	(7,274)
Net increase (decrease) in mortgage escrow funds	11,704	(25,689)
Proceeds from stock option exercises	2,397	556
Treasury shares repurchased	(300,942)	0
Cash dividends paid - common stock	(43,995)	(47,171)
Cash dividends paid - preferred stock	(6,582)	(6,581)
Net cash (used in) provided by financing activities	(2,008,013)	679,544
Net decrease in cash and cash equivalents	107,493	54,078
Cash and cash equivalents at beginning of period	438,110	479,906
Cash and cash equivalents at end of period	545,603	533,984
Supplemental cash flow information:
Interest payments	211,758	165,306
Income tax payments	44,968	23,445
Real estate acquired in settlement of loans	4,110	11,630
Residential mortgage loans transferred from held for sale to portfolio	127,883
Securities held to maturity transferred to available for sale	708,627	0
Operating cash flows from operating leases	13,424
Right-of-use assets obtained in exchange for lease liabilities	113,985
Non-cash assets acquired:
Total loans, net	471,878	442,884
Accrued interest receivable	1,789	0
Goodwill	44,781	36,094
Premises and equipment, net	0	379
Other assets	545	7,071
Total non-cash assets acquired	518,993	486,428
Liabilities assumed:
Other liabilities	3,301	4,884
Total liabilities assumed	3,301	4,884
Net non-cash assets acquired	515,692	481,544
Cash and cash equivalents received in acquisitions	0	20,508
Total consideration paid	$ 515,692	$ 502,052

Basis of Financial Statement Pr

Basis of Financial Statement Presentation	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Financial Statement Presentation	Basis of Financial Statement Presentation (a) Nature of Operations Sterling Bancorp (the “Company,” “we,” “us” and “our” ) is a Delaware corporation, a bank holding company and a financial holding company headquartered in Montebello, New York that owns all of the outstanding shares of common stock of Sterling National Bank (the “Bank”), its principal subsidiary. The Bank is a full-service regional bank specializing in the delivery of services and solutions to business owners, their families and consumers within the communities it serves through teams of dedicated and experienced relationship managers. (b) Basis of Presentation The consolidated financial statements in this Quarterly Report on Form 10-Q include the accounts of the Company and all other entities in which the Company has a controlling financial interest. All significant intercompany balances and transactions have been eliminated in consolidation. The accounting and financial reporting policies we follow conform, in all material respects, to accounting principles generally accepted in the United States (“GAAP”) and to general practices within the banking industry, which include regulatory reporting instructions. The consolidated financial statements in this Quarterly Report on Form 10-Q have not been audited by an independent registered public accounting firm, but, in the opinion of management, reflect all adjustments necessary for a fair presentation of our financial position and results of operations. All such adjustments were of a normal and recurring nature. The consolidated financial statements have been prepared in accordance with GAAP and with the instructions to Form 10-Q adopted by the Securities and Exchange Commission (the “SEC”). Accordingly, the financial statements do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with our consolidated financial statements, and notes thereto, for the year ended December 31, 2018 , included in our Annual Report on Form 10-K, as filed with the SEC on March 1, 2019 (the “2018 Form 10-K”). Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period. Certain items in prior financial statements have been reclassified to conform to the current presentation. These reclassifications had no impact on previously reported net income. (c) Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, income, expense and contingencies at the date of the financial statements. Actual results could differ significantly from these estimates, particularly the allowance for loan losses and the status of contingencies, and are subject to change. (d) Adoption of New Accounting Standards We adopted ASU No. 2016-02 “Leases (Topic 842)” , as of January 1, 2019, which requires lessees to recognize most leases on their balance sheets as a right-of-use asset with a corresponding lease liability. The standard included additional required qualitative and quantitative disclosures. We adopted the following practical expedients and elected the following accounting policies related to the leasing standard: • Carry over of historical lease classifications and whether existing contracts contain leases; • Current lease classification for existing leases; • Short-term lease accounting policy, allowing us not to recognize right-of-use assets and liabilities for leases with a term of 12 months or less; and • Lease and non-lease components are not separated for certain leases. As of September 30, 2019, the adoption of this standard resulted in the recognition of right-of-use assets of $113,985 and a lease liability of $120,700 , included in other assets and other liabilities, respectively, in the consolidated balance sheets. The standard did not have a significant impact on operating results or cash flows. See Note 9. “Leases” for additional information. We adopted ASU 2017-12, “Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities,” (“ASU 2017-12”) , as of January 1, 2019, which amended the hedge accounting recognition and presentation requirements in ASC 815 to improve the transparency and understandability of information conveyed to financial statement users about an entity’s risk management activities to better align the entity’s financial reporting for hedging relationships with those risk management activities and to reduce the complexity of and simplify the application of hedge accounting. A provision in ASU 2017-12 provides that we may reclassify a debt security from held to maturity to available for sale at the time of adoption if the debt security is eligible to be hedged under the last-of-layer method in accordance ASU 2017-12. Generally, this includes debt securities that are pre-payable, including mortgage-backed securities, and debt securities that are callable by the issuer, which are applicable to many of our state and municipal debt securities. We transferred held to maturity securities with a book value of $720,440 and a fair value of $708,627 at December 31, 2018 to available for sale effective January 1, 2019. See Note 3. “Securities” for additional information.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Acquisitions	Acquisitions Commercial loan portfolio and origination platform acquired from Woodforest National Bank (“Woodforest”) On February 28, 2019, the Bank acquired a commercial loan portfolio consisting of equipment finance loans and leases and asset-based lending loans from Woodforest (the “Woodforest Acquisition”). In addition, the Bank obtained sales and relationship management and business development personnel based in Novi, Michigan, who will continue to originate new loans and leases. The total consideration paid in cash at closing was $515,692 . We acquired $166,143 of equipment finance loans, which are mainly fixed rate loans, and $331,842 of asset-based lending loans, which are mainly variable rate loans. The fair value of these loans was $471,878 at the time of acquisition. The Bank paid a premium of 3.75% on the unpaid principal balance of the loans or $18,674 . The transaction was accounted for as a business combination. We recorded a $3,344 restructuring charge consisting mainly of professional fees, severance, retention, systems integration expense and facilities consolidation, which is included in charge for asset write-downs, retention and severance on the consolidated income statement. The acquired loans and origination platform have been fully integrated into our equipment finance and asset-based lending business lines. Acquisition of Advantage Funding Management Co., Inc. (“Advantage Funding”) On April 2, 2018 , the Bank acquired 100% of the outstanding common stock of Advantage Funding (the “Advantage Funding Acquisition”). The total consideration in the transaction was $502,052 and was paid in cash on the closing date. Advantage Funding was a provider of commercial vehicle and transportation financing services based in Lake Success, New York. Advantage Funding had total outstanding loans and leases of $457,638 on the acquisition date consisting mainly of fixed rate assets. The fair value of these loans was $439,622 . The Bank paid a premium on the gross loans and leases receivable of 4.5% or $20,300 . In the second quarter of 2018, we recorded a $4,396 restructuring charge consisting mainly of professional fees, severance, retention, systems integration expense and facilities consolidation, which is included in charge for asset write-downs, retention and severance on the consolidated income statement. The Advantage Funding Acquisition is consistent with our strategy of growing commercial loans and increasing the proportion of commercial loans in our loan portfolio. The operations of the business were fully integrated into our equipment finance business line.

Securities

Securities	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Securities	Securities A summary of amortized cost and estimated fair value of securities as of September 30, 2019 is presented below. The term “MBS” refers to mortgage-backed securities and the term “CMOs” refers to collateralized mortgage obligations. Both of these terms are further defined in Note 18. “Fair Value Measurements”. September 30, 2019 Available for Sale Held to Maturity Amortized cost Gross unrealized gains Gross unrealized losses Fair value Amortized cost Gross unrecognized gains Gross unrecognized losses Fair value Residential MBS: Agency-backed $ 1,581,246 $ 22,923 $ (1,348 ) $ 1,602,821 $ 177,153 $ 1,983 $ (92 ) $ 179,044 CMOs/Other MBS 528,495 8,924 (45 ) 537,374 — — — — Total residential MBS 2,109,741 31,847 (1,393 ) 2,140,195 177,153 1,983 (92 ) 179,044 Other securities: Federal agencies 156,815 6,082 — 162,897 59,374 857 — 60,231 Corporate 292,064 12,880 (171 ) 304,773 19,917 474 — 20,391 State and municipal 442,946 10,959 (351 ) 453,554 1,716,398 73,155 (141 ) 1,789,412 Other — — — — 12,750 158 (99 ) 12,809 Total other securities 891,825 29,921 (522 ) 921,224 1,808,439 74,644 (240 ) 1,882,843 Total securities $ 3,001,566 $ 61,768 $ (1,915 ) $ 3,061,419 $ 1,985,592 $ 76,627 $ (332 ) $ 2,061,887 A summary of securities classified as held to maturity at December 31, 2018 that were transferred to available for sale effective January 1, 2019 is presented below. Amortized Fair Residential MBS: Agency-backed $ 125,343 $ 121,510 CMOs/Other MBS 27,780 27,017 Total residential MBS 153,123 148,527 Other securities: Corporate 49,001 48,607 State and municipal 518,316 511,493 Total of securities transferred from held to maturity to available for sale $ 720,440 $ 708,627 A summary of amortized cost and estimated fair value of securities as of December 31, 2018 is presented below: December 31, 2018 Available for Sale Held to Maturity Amortized cost Gross unrealized gains Gross unrealized losses Fair value Amortized cost Gross unrecognized gains Gross unrecognized losses Fair value Residential MBS: Agency-backed $ 2,328,870 $ 2,347 $ (62,366 ) $ 2,268,851 $ 318,590 $ 73 $ (8,605 ) $ 310,058 CMOs/Other MBS 596,868 11 (22,109 ) 574,770 27,780 2 (765 ) 27,017 Total residential MBS 2,925,738 2,358 (84,475 ) 2,843,621 346,370 75 (9,370 ) 337,075 Other securities: Federal agencies 283,825 — (9,852 ) 273,973 59,065 160 (128 ) 59,097 Corporate 537,210 1,162 (10,407 ) 527,965 68,512 431 (392 ) 68,551 State and municipal 227,546 302 (2,844 ) 225,004 2,305,420 2,654 (49,562 ) 2,258,512 Other — — — — 17,250 49 (12 ) 17,287 Total other securities 1,048,581 1,464 (23,103 ) 1,026,942 2,450,247 3,294 (50,094 ) 2,403,447 Total securities $ 3,974,319 $ 3,822 $ (107,578 ) $ 3,870,563 $ 2,796,617 $ 3,369 $ (59,464 ) $ 2,740,522 The amortized cost and estimated fair value of securities at September 30, 2019 are presented below by contractual maturity. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Residential MBS are shown separately since they are not due at a single maturity date. September 30, 2019 Available for sale Held to maturity Amortized cost Fair value Amortized cost Fair value Remaining period to contractual maturity: One year or less $ 12,433 $ 12,398 $ 34,943 $ 35,146 One to five years 102,874 105,669 90,004 91,778 Five to ten years 598,960 620,601 281,286 292,768 Greater than ten years 177,558 182,556 1,402,206 1,463,151 Total securities with a stated maturity date 891,825 921,224 1,808,439 1,882,843 Residential MBS 2,109,741 2,140,195 177,153 179,044 Total securities $ 3,001,566 $ 3,061,419 $ 1,985,592 $ 2,061,887 Sales of securities for the periods indicated below were as follows: For the three months ended For the nine months ended September 30, September 30, 2019 2018 2019 2018 Available for sale: Proceeds from sales $ 647,485 $ — $ 1,386,236 $ 117,810 Gross realized gains (1) 7,815 — 12,170 82 Gross realized losses (1) (933 ) (3 ) (19,000 ) (5,910 ) Income tax expense (benefit) on realized net gains / losses 1,445 (1 ) (1,434 ) (1,224 ) Held to maturity: (2) Proceeds from sale $ — $ — $ — $ 254 Gross realized losses (1) — (53 ) — (74 ) Income tax expense on realized loss — (11 ) — (15 ) (1) Gross realized gains and losses include securities called prior to maturity. (2) In the nine months ended September 30, 2018, the Company sold a security that was held to maturity due to a decline in the credit rating and other evidence of deterioration of the issuer’s creditworthiness. We adopted ASU 2017-12, “Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities,” as of January 1, 2019, which allowed us to reclassify a debt security from held to maturity to available for sale if the debt security is eligible to be hedged under the last-of-layer method in accordance with ASU 2017-12. Generally, this included debt securities that are pre-payable, including mortgage-backed securities, and debt securities that are callable by the issuer, which are applicable to many of our state and municipal debt securities. We transferred held to maturity securities with a book value of $720,440 and a fair value of $708,627 at December 31, 2018 to available for sale effective January 1, 2019. In the first quarter of 2019, we sold securities with a book value of $751,935 to raise liquidity for the Woodforest Acquisition, and to reduce lower yielding securities as a percentage of total assets. At September 30, 2019 and December 31, 2018 , there were no holdings of securities of any one issuer in an amount greater than 10% of stockholders’ equity, other than the U.S. federal government and its agencies. The following table summarizes securities available for sale with unrealized losses, segregated by the length of time in a continuous unrealized loss position for the periods presented below: Continuous unrealized loss position Less than 12 months 12 months or longer Total Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses Available for sale September 30, 2019 Residential MBS: Agency-backed $ 211,025 $ (512 ) $ 110,298 $ (836 ) $ 321,323 $ (1,348 ) CMOs/Other MBS — — 5,991 (45 ) 5,991 (45 ) Total residential MBS 211,025 (512 ) 116,289 (881 ) 327,314 (1,393 ) Other securities: Corporate 2,008 (29 ) 15,588 (142 ) 17,596 (171 ) State and municipal 25,073 (296 ) 3,779 (55 ) 28,852 (351 ) Total other securities 27,081 (325 ) 19,367 (197 ) 46,448 (522 ) Total securities $ 238,106 $ (837 ) $ 135,656 $ (1,078 ) $ 373,762 $ (1,915 ) December 31, 2018 Residential MBS: Agency-backed $ 156,787 $ (536 ) $ 1,955,056 $ (61,830 ) $ 2,111,843 $ (62,366 ) CMOs/Other MBS 94 (2 ) 574,053 (22,107 ) 574,147 (22,109 ) Total residential MBS 156,881 (538 ) 2,529,109 (83,937 ) 2,685,990 (84,475 ) Other securities: Federal agencies — — 273,973 (9,852 ) 273,973 (9,852 ) Corporate 230,126 (4,278 ) 119,869 (6,129 ) 349,995 (10,407 ) State and municipal 16,172 (64 ) 175,966 (2,780 ) 192,138 (2,844 ) Total other securities 246,298 (4,342 ) 569,808 (18,761 ) 816,106 (23,103 ) Total securities $ 403,179 $ (4,880 ) $ 3,098,917 $ (102,698 ) $ 3,502,096 $ (107,578 ) The following table summarizes securities held to maturity with unrecognized losses, segregated by the length of time in a continuous unrecognized loss position for the periods presented below: Continuous unrecognized loss position Less than 12 months 12 months or longer Total Fair value Unrecognized losses Fair value Unrecognized losses Fair value Unrecognized losses Held to maturity September 30, 2019 Residential MBS: Agency-backed $ 36,823 $ (80 ) $ 1,751 $ (12 ) $ 38,574 $ (92 ) Other securities: State and municipal 3,001 (3 ) 8,359 (138 ) 11,360 (141 ) Other 9,901 (99 ) — — 9,901 (99 ) Total other securities 12,902 (102 ) 8,359 (138 ) 21,261 (240 ) Total securities $ 49,725 $ (182 ) $ 10,110 $ (150 ) $ 59,835 $ (332 ) December 31, 2018 Residential MBS: Agency-backed $ 25,003 $ (147 ) $ 273,974 $ (8,458 ) $ 298,977 $ (8,605 ) CMOs/Other MBS 101 (2 ) 25,066 (763 ) 25,167 (765 ) Total residential MBS 25,104 (149 ) 299,040 (9,221 ) 324,144 (9,370 ) Other securities: Federal agencies 29,485 (95 ) 4,908 (33 ) 34,393 (128 ) Corporate 21,859 (137 ) 16,261 (255 ) 38,120 (392 ) State and municipal 118,389 (877 ) 1,897,758 (48,685 ) 2,016,147 (49,562 ) Other 9,488 (12 ) — — 9,488 (12 ) Total other securities 179,221 (1,121 ) 1,918,927 (48,973 ) 2,098,148 (50,094 ) Total securities $ 204,325 $ (1,270 ) $ 2,217,967 $ (58,194 ) $ 2,422,292 $ (59,464 ) At September 30, 2019 , a total of 142 available for sale securities were in a continuous unrealized loss position for less than 12 months and 44 available for sale securities were in a continuous unrealized loss position for 12 months or longer. At September 30, 2019 , a total of 10 held to maturity securities were in a continuous unrealized loss position for less than 12 months and 48 held to maturity securities were in a continuous unrealized loss position for 12 months or longer. Declines in the fair value of held to maturity and available for sale securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses to the extent the impairment is related to credit losses. The amount of the impairment related to other factors is recognized in other comprehensive income. In estimating other than temporary impairment (“OTTI”) losses, management considers, among other things: (i) the length of time and the extent to which the fair value has been less than cost; (ii) the financial condition and near-term prospects of the issuer; and (iii) our intent and ability to retain the investment in the issuer for a period of time sufficient to allow for any anticipated recovery in cost. Management has the ability and intent to hold the securities classified as held to maturity in the table above until they mature, at which time we anticipate we will receive full value for the securities. Furthermore, as of September 30, 2019 , management did not have the intent to sell any of the securities classified as available for sale in the table above and believes that it is more likely than not that we will not have to sell any such securities before a recovery of cost. Any unrealized losses are largely due to increases in market interest rates over the yields available at the time the underlying securities were purchased. The fair value is expected to recover as the securities approach their maturity date or repricing date or if market yields for such investments decline. Management does not believe any of the securities are impaired due to reasons related to credit quality. As of September 30, 2019 , management believes the impairments detailed in the table above are temporary. Securities pledged for borrowings at the FHLB and other institutions, and securities pledged for municipal deposits and other purposes, were as follows for the periods presented below: September 30, December 31, 2019 2018 Available for sale securities pledged for borrowings, at fair value $ 26,544 $ 12,206 Available for sale securities pledged for municipal deposits, at fair value 818,763 817,306 Held to maturity securities pledged for borrowings, at amortized cost 914 34,996 Held to maturity securities pledged for municipal deposits, at amortized cost 1,551,726 1,338,901 Total securities pledged $ 2,397,948 $ 2,203,409

Portfolio Loans

Portfolio Loans	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Portfolio Loans	Portfolio Loans The composition of our total portfolio loans, which excludes loans held for sale, was the following for the periods presented below: September 30, 2019 December 31, 2018 Originated loans Acquired loans Total Originated loans Acquired loans Total Commercial: Commercial & Industrial (“C&I”): Traditional C&I $ 2,318,325 $ 58,304 $ 2,376,629 $ 2,321,131 $ 75,051 $ 2,396,182 Asset-based lending 870,681 303,658 1,174,339 792,935 — 792,935 Payroll finance 209,210 — 209,210 227,452 — 227,452 Warehouse lending 1,457,232 — 1,457,232 782,646 — 782,646 Factored receivables 277,853 — 277,853 258,383 — 258,383 Equipment financing 893,255 281,459 1,174,714 913,751 301,291 1,215,042 Public sector finance 1,122,592 — 1,122,592 860,746 — 860,746 Total C&I 7,149,148 643,421 7,792,569 6,157,044 376,342 6,533,386 Commercial mortgage: Commercial real estate (“CRE”) 4,806,054 392,353 5,198,407 4,154,956 487,461 4,642,417 Multi-family 1,932,464 2,846,968 4,779,432 1,527,619 3,236,505 4,764,124 Acquisition, development and construction (“ADC”) 433,883 — 433,883 267,754 — 267,754 Total commercial mortgage 7,172,401 3,239,321 10,411,722 5,950,329 3,723,966 9,674,295 Total commercial 14,321,549 3,882,742 18,204,291 12,107,373 4,100,308 16,207,681 Residential mortgage 559,685 1,810,531 2,370,216 621,471 2,083,755 2,705,226 Consumer 133,384 122,272 255,656 153,811 151,812 305,623 Total portfolio loans 15,014,618 5,815,545 20,830,163 12,882,655 6,335,875 19,218,530 Allowance for loan losses (104,735 ) — (104,735 ) (95,677 ) — (95,677 ) Total portfolio loans, net $ 14,909,883 $ 5,815,545 $ 20,725,428 $ 12,786,978 $ 6,335,875 $ 19,122,853 Acquired loans at September 30, 2019 and December 31, 2018 include loans that were acquired in the following transactions: the Woodforest Acquisition; the Advantage Funding Acquisition; the merger with Astoria Financial Corporation (“Astoria”) (the “Astoria Merger”); the merger with Hudson Valley Holding Corp. (the “HVB Merger”); and the merger between Provident New York Bancorp and legacy Sterling Bancorp (the “Provident Merger”). Under our credit administration and accounting policies, once a loan relationship reaches maturity and is re-underwritten, the loan is no longer considered an acquired loan and is included in originated loans. In addition, acquired performing loans that were subsequently subject to a credit evaluation, such as after designation as criticized or classified or placed on non-accrual since the acquisition date, are also included in originated loans. Consistent with our credit and accounting policies, at September 30, 2019 , there were $1,064,724 of loans with an allowance for loan loss reserve of $8,465 that were originally considered acquired loans but have since migrated to the originated loans portfolio as they have reached maturity, were re-underwritten, have been designated as criticized or classified or have been placed on non-accrual since the acquisition date. At December 31, 2018 , there were $1,365,682 of loans with an allowance for loan loss reserve of $9,607 that were originally considered acquired loans but have since migrated to the originated loans portfolio as they have reached maturity, were re-underwritten, have been designated as criticized or classified or have been placed on non-accrual since the acquisition date. Total portfolio loans include net deferred loan origination fees of $9,133 and $5,581 at September 30, 2019 and December 31, 2018 , respectively. Portfolio loans subject to purchase accounting adjustments are shown net of discounts on acquired loans, which were $73,985 at September 30, 2019 and $117,222 at December 31, 2018 . At September 30, 2019 and December 31, 2018 , the Bank pledged residential mortgage and commercial real estate loans of $7,729,593 and $8,526,247 , respectively, to the FHLB as collateral for certain borrowing arrangements. See Note 8. “Borrowings”. The following tables set forth the amounts and status of our loans, troubled debt restructurings (“TDRs”) and non-performing loans at September 30, 2019 and December 31, 2018 : Originated loans: September 30, 2019 Current 30-59 60-89 90+ Non- Total Traditional C&I $ 2,281,766 $ 7,460 $ 290 $ 351 $ 28,458 $ 2,318,325 Asset-based lending 851,047 — — — 19,634 870,681 Payroll finance 208,470 — — — 740 209,210 Warehouse lending 1,457,232 — — — — 1,457,232 Factored receivables 277,853 — — — — 277,853 Equipment financing 851,327 10,122 7,495 45 24,266 893,255 Public sector finance 1,122,592 — — — — 1,122,592 CRE 4,765,462 3,399 6,525 — 30,668 4,806,054 Multi-family 1,927,259 — — — 5,205 1,932,464 ADC 432,922 — — — 961 433,883 Residential mortgage 520,303 2,258 387 — 36,737 559,685 Consumer 123,316 883 3 — 9,182 133,384 Total loans $ 14,819,549 $ 24,122 $ 14,700 $ 396 $ 155,851 $ 15,014,618 Total TDRs included above $ 24,635 $ 258 $ — $ — $ 24,061 $ 48,954 Non-performing loans: Loans 90+ days past due and still accruing $ 396 Non-accrual loans 155,851 Total originated non-performing loans $ 156,247 December 31, 2018 Current 30-59 60-89 90+ Non- Total Traditional C&I $ 2,266,947 $ 5,747 $ 6,139 $ — $ 42,298 $ 2,321,131 Asset-based lending 789,654 — — — 3,281 792,935 Payroll finance 226,571 — — — 881 227,452 Warehouse lending 782,646 — — — — 782,646 Factored receivables 258,383 — — — — 258,383 Equipment financing 879,468 20,466 1,587 9 12,221 913,751 Public sector finance 860,746 — — — — 860,746 CRE 4,118,134 8,054 — 799 27,969 4,154,956 Multi-family 1,524,914 1,014 — — 1,691 1,527,619 ADC 267,090 230 — 434 — 267,754 Residential mortgage 592,563 1,934 897 264 25,813 621,471 Consumer 143,510 1,720 1,232 271 7,078 153,811 Total loans $ 12,710,626 $ 39,165 $ 9,855 $ 1,777 $ 121,232 $ 12,882,655 Total TDRs included above $ 34,892 $ 215 $ 181 $ 650 $ 38,947 $ 74,885 Non-performing loans: Loans 90+ days past due and still accruing $ 1,777 Non-accrual loans 121,232 Total originated non-performing loans $ 123,009 Acquired loans: September 30, 2019 Current 30-59 60-89 90+ Non- Total Traditional C&I $ 58,261 $ — $ — $ — $ 43 $ 58,304 Asset-based lending 303,658 — — — — 303,658 Equipment financing 270,424 7,893 743 — 2,399 281,459 CRE 387,560 758 — — 4,035 392,353 Multi-family 2,845,849 313 4 250 552 2,846,968 Residential mortgage 1,771,628 14,481 — 309 24,113 1,810,531 Consumer 117,512 1,742 — — 3,018 122,272 Total loans $ 5,754,892 $ 25,187 $ 747 $ 559 $ 34,160 $ 5,815,545 Total TDRs included above $ — $ — $ — $ — $ — $ — Non-performing loans: Loans 90+ days past due and still accruing $ 559 Non-accrual loans 34,160 Total acquired non-performing loans $ 34,719 December 31, 2018 Current 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 69,690 $ 5,256 $ 105 $ — $ — $ 75,051 Equipment financing 288,447 8,659 3,998 187 — 301,291 CRE 481,583 377 — 458 5,043 487,461 Multi-family 3,233,779 1,736 — — 990 3,236,505 Residential mortgage 2,022,340 18,734 6,513 — 36,168 2,083,755 Consumer 146,042 1,852 951 — 2,967 151,812 Total loans $ 6,241,881 $ 36,614 $ 11,567 $ 645 $ 45,168 $ 6,335,875 Total TDRs included above $ — $ — $ — $ — $ — $ — Non-performing loans: Loans 90+ days past due and still accruing $ 645 Non-accrual loans 45,168 Total acquired non-performing loans $ 45,813 The following table provides additional analysis of our non-accrual loans at September 30, 2019 and December 31, 2018 : September 30, 2019 December 31, 2018 Recorded investment non-accrual loans Recorded investment PCI non-accrual loans Recorded investment total non-accrual loans Unpaid principal balance non-accrual loans Recorded investment non-accrual loans Recorded investment PCI non-accrual loans Recorded investment total non-accrual loans Unpaid principal balance non-accrual loans Traditional C&I $ 28,458 $ 43 $ 28,501 $ 39,321 $ 41,625 $ 673 $ 42,298 $ 50,651 Asset-based lending 19,634 — 19,634 35,205 3,281 — 3,281 3,859 Payroll finance 740 — 740 740 881 — 881 881 Equipment financing 26,665 — 26,665 31,237 12,221 — 12,221 15,744 CRE 25,731 8,972 34,703 39,287 23,675 9,337 33,012 39,440 Multi-family 3,777 1,980 5,757 6,169 482 2,199 2,681 2,920 ADC 961 — 961 961 — — — — Residential mortgage 34,595 26,255 60,850 71,619 24,339 37,642 61,981 72,706 Consumer 7,928 4,272 12,200 14,177 6,576 3,469 10,045 12,170 Total $ 148,489 $ 41,522 $ 190,011 $ 238,716 $ 113,080 $ 53,320 $ 166,400 $ 198,371 When the ultimate collectability of the total principal of an impaired loan is in doubt and the loan is on non-accrual status, all payments are applied to principal under the cost recovery method. When the ultimate collectability of the total principal of an impaired loan is not in doubt and the loan is on non-accrual status, contractual interest is credited to interest income when received, under the cash basis method. At September 30, 2019 and December 31, 2018 , the recorded investment of residential mortgage loans that were in the process of foreclosure was $40,754 and $48,107 , respectively, which is included in non-accrual residential mortgage loans above. The following table sets forth loans evaluated for impairment by segment and the allowance evaluated by segment at September 30, 2019 : Loans evaluated by segment Allowance evaluated by segment Individually evaluated for impairment Collectively evaluated for impairment PCI loans (1) Total loans Individually evaluated for impairment Collectively evaluated for impairment Total allowance for loan losses Traditional C&I $ 26,279 $ 2,344,853 $ 5,497 $ 2,376,629 $ — $ 14,466 $ 14,466 Asset-based lending 19,634 1,141,104 13,601 1,174,339 — 13,968 13,968 Payroll finance — 209,210 — 209,210 — 1,937 1,937 Warehouse lending — 1,457,232 — 1,457,232 — 547 547 Factored receivables — 277,853 — 277,853 — 1,016 1,016 Equipment financing 5,171 1,167,476 2,067 1,174,714 — 16,109 16,109 Public sector finance — 1,122,592 — 1,122,592 — 1,539 1,539 CRE 31,614 5,145,183 21,610 5,198,407 — 32,111 32,111 Multi-family 3,363 4,770,446 5,623 4,779,432 — 9,556 9,556 ADC — 433,883 — 433,883 — 4,166 4,166 Residential mortgage 4,625 2,295,539 70,052 2,370,216 — 7,372 7,372 Consumer 2,727 245,976 6,953 255,656 — 1,948 1,948 Total portfolio loans $ 93,413 $ 20,611,347 $ 125,403 $ 20,830,163 $ — $ 104,735 $ 104,735 (1) We acquired loans for which there was, at acquisition, both evidence of deterioration of credit quality since origination and the probability, at acquisition, that all contractually required payments would not be collected. These loans are classified as purchased credit impaired loans (“PCI loans”). The following table sets forth loans evaluated for impairment by segment and the allowance evaluated by segment at December 31, 2018 : Loans evaluated by segment Allowance evaluated by segment Individually evaluated for impairment Collectively evaluated for impairment PCI loans Total loans Individually evaluated for impairment Collectively evaluated for impairment Total allowance for loan losses Traditional C&I $ 48,735 $ 2,338,432 $ 9,015 $ 2,396,182 $ — $ 14,201 $ 14,201 Asset-based lending 3,281 789,654 — 792,935 — 7,979 7,979 Payroll finance — 227,452 — 227,452 — 2,738 2,738 Warehouse lending — 782,646 — 782,646 — 2,800 2,800 Factored receivables — 258,383 — 258,383 — 1,064 1,064 Equipment financing 3,577 1,211,465 — 1,215,042 — 12,450 12,450 Public sector finance — 860,746 — 860,746 — 1,739 1,739 CRE 33,284 4,581,911 27,222 4,642,417 — 32,285 32,285 Multi-family 1,662 4,754,912 7,550 4,764,124 — 8,355 8,355 ADC — 267,754 — 267,754 — 1,769 1,769 Residential mortgage 3,210 2,614,046 87,970 2,705,226 — 7,454 7,454 Consumer 7,249 290,336 8,038 305,623 — 2,843 2,843 Total portfolio loans $ 100,998 $ 18,977,737 $ 139,795 $ 19,218,530 $ — $ 95,677 $ 95,677 Management considers a loan to be impaired when, based on current information and events, it is determined that we will not be able to collect all amounts due according to the loan contract, including scheduled interest payments. Evaluation of impairment is generally treated the same across all classes of loans on a loan-by-loan basis. Generally loans of $750 or less are evaluated for impairment on a homogeneous pool basis. When management identifies a loan as impaired, the impairment is measured based on the present value of expected future cash flows, discounted at the loan’s effective interest rate, except when the sole remaining source of repayment of the loan is the operation or liquidation of the collateral. In these cases, management uses the current fair value of the collateral, less selling costs when foreclosure or liquidation is probable, instead of discounted cash flows. If management determines that the value of the impaired loan is less than the recorded investment in the loan (net of previous charge-offs, deferred loan fees or costs and unamortized premium or discount), impairment is generally recognized through a charge-off to the allowance for loan losses. The following table presents the changes in the balance of the accretable yield discount for PCI loans for the three and nine months ended September 30, 2019 and 2018 : For the three months ended September 30, For the nine months ended September 30, 2019 2018 2019 2018 Balance at beginning of period $ 18,381 $ 21,711 $ 16,932 $ 45,582 Balances acquired in the Woodforest Acquisition — — 2,093 — Accretion of income (2,459 ) (4,027 ) (6,381 ) (10,578 ) Charge-offs (143 ) — (1,082 ) — Reclassification (to) from non-accretable difference 1,024 1,056 5,241 (1,192 ) Other, adjustments — — — (15,072 ) Balance at end of period $ 16,803 $ 18,740 $ 16,803 $ 18,740 Income is not recognized on PCI loans unless we can reasonably estimate the cash flows that are expected to be collected over the life of the loan. The balance of PCI loans that were treated under the cost recovery method was $3,284 and $5,202 at September 30, 2019 and December 31, 2018 , respectively. The following table presents loans individually evaluated for impairment, excluding PCI loans, by segment of loans at September 30, 2019 and December 31, 2018 : September 30, 2019 December 31, 2018 Unpaid principal balance Recorded investment Unpaid principal balance Recorded investment Loans with no related allowance recorded: Traditional C&I $ 37,000 $ 26,279 $ 64,653 $ 48,735 Asset-based lending 35,205 19,634 3,859 3,281 Equipment financing 5,171 5,171 3,577 3,577 CRE 35,476 31,614 43,119 33,284 Multi-family 3,695 3,363 2,341 1,662 Residential mortgage 5,962 4,625 3,430 3,210 Consumer 2,727 2,727 7,249 7,249 Total $ 125,236 $ 93,413 $ 128,228 $ 100,998 Our policy generally requires a charge-off of the difference between the present value of the cash flows or the net collateral value of the collateral securing the loan and our recorded investment. As a result, there were no impaired loans with an allowance recorded at September 30, 2019 and December 31, 2018 . The following table presents the average recorded investment and interest income recognized related to loans individually evaluated for impairment by segment for the three months ended September 30, 2019 and September 30, 2018 : For the three months ended September 30, 2019 September 30, 2018 QTD average recorded investment Interest income recognized Cash-basis interest income recognized QTD average recorded investment Interest income recognized Cash-basis interest income recognized Loans with no related allowance recorded: Traditional C&I $ 26,702 $ 5 $ — $ 36,731 $ 116 $ — Asset-based lending 25,334 — — 14,639 123 — Equipment financing 4,315 23 — 798 — — CRE 27,337 76 — 27,149 294 — Multi-family 2,488 — — 1,768 17 — Residential mortgage 5,218 4 — 1,849 — — Consumer 2,727 — — 4,762 — — Total $ 94,121 $ 108 $ — $ 87,696 $ 550 $ — The following table presents the average recorded investment and interest income recognized related to loans individually evaluated for impairment by segment for the nine months ended September 30, 2019 and September 30, 2018 : For the nine months ended September 30, 2019 September 30, 2018 YTD average recorded investment Interest income recognized Cash-basis interest income recognized YTD average recorded investment Interest income recognized Cash-basis interest income recognized Loans with no related allowance recorded: Traditional C&I $ 32,666 $ 15 $ — $ 35,935 $ 149 $ — Asset-based lending 22,511 — — 10,980 347 — Equipment financing 3,626 92 — 598 — — CRE 26,580 227 — 22,704 360 — Multi-family 2,314 — — 1,726 48 — Residential mortgage 4,593 13 — 1,387 — — Consumer 2,727 — — 4,355 — — Total $ 95,017 $ 347 $ — $ 77,685 $ 904 $ — Troubled Debt Restructurings (“TDRs”) The following tables set forth the amounts and past due status of our TDRs at September 30, 2019 and December 31, 2018 : September 30, 2019 Current loans 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 475 $ — $ — $ — $ 13,949 $ 14,424 Asset-based lending — — — — 1,026 1,026 Equipment financing 5,615 71 — — 1,872 7,558 CRE 8,514 — — — 5,031 13,545 ADC — — — — 434 434 Residential mortgage 7,546 187 — — 1,416 9,149 Consumer 2,485 — — — 333 2,818 Total $ 24,635 $ 258 $ — $ — $ 24,061 $ 48,954 December 31, 2018 Current loans 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 9,011 $ — $ — $ — $ 25,672 $ 34,683 Asset-based lending — — — — 1,276 1,276 Equipment financing 1,905 — 9 — 2,367 4,281 CRE 11,071 — — — 7,112 18,183 ADC — — — 434 — 434 Residential mortgage 5,688 — 103 — 2,312 8,103 Consumer 7,217 215 69 216 208 7,925 Total $ 34,892 $ 215 $ 181 $ 650 $ 38,947 $ 74,885 We did not have any outstanding commitments to lend additional amounts to customers with loans classified as TDRs as of September 30, 2019 or December 31, 2018 . The following table presents loans by segment modified as TDRs that occurred during the first nine months of 2019 and 2018 : September 30, 2019 September 30, 2018 Recorded investment Recorded investment Number Pre- modification Post- modification Number Pre- modification Post- modification Traditional C&I 1 $ 5,026 $ 5,026 2 $ 11,606 $ 10,477 Asset-based lending — — — 1 12,766 12,766 Equipment financing 6 5,874 5,039 4 3,307 3,307 CRE — — — 1 12,187 12,187 Residential mortgage 3 1,274 1,274 11 1,684 1,367 Consumer — — — 1 4,944 4,944 Total TDRs 10 $ 12,174 $ 11,339 20 $ 46,494 $ 45,048 During the nine months ended September 30, 2019 , there was one equipment finance loan designated as a TDR that experienced a payment default within the twelve months following the modification. During the nine months ended September 30, 2018 , except for certain TDRs that are included in non-accrual loans, there were no TDRs that experienced a payment default within the twelve months following a modification. A payment default is defined as missing three consecutive monthly payments or being over 90 days past due

Allowance for Loan Losses

Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Allowance for Loan Losses	Allowance for Loan Losses Activity in the allowance for loan losses for the three and nine months ended September 30, 2019 and 2018 is summarized below: For the three months ended September 30, 2019 Beginning balance Charge-offs Recoveries Net charge-offs Provision / (credit) Ending balance Traditional C&I $ 17,649 $ (123 ) $ 136 $ 13 $ (3,196 ) $ 14,466 Asset-based lending 11,905 (9,577 ) — (9,577 ) 11,640 13,968 Payroll finance 1,391 — 8 8 538 1,937 Warehouse lending 843 — — — (296 ) 547 Factored receivables 1,157 (14 ) 3 (11 ) (130 ) 1,016 Equipment financing 14,284 (2,711 ) 422 (2,289 ) 4,114 16,109 Public sector finance 1,594 — — — (55 ) 1,539 CRE 34,846 (53 ) 187 134 (2,869 ) 32,111 Multi-family 9,360 — 90 90 106 9,556 ADC 2,272 (6 ) — (6 ) 1,900 4,166 Residential mortgage 7,109 (1,984 ) 126 (1,858 ) 2,121 7,372 Consumer 2,254 (241 ) 108 (133 ) (173 ) 1,948 Total allowance for loan losses $ 104,664 $ (14,709 ) $ 1,080 $ (13,629 ) $ 13,700 $ 104,735 Annualized net charge-offs to average loans outstanding: 0.27 % For the three months ended September 30, 2018 Beginning balance Charge-offs Recoveries Net charge-offs Provision / (credit) Ending balance Traditional C&I $ 18,075 $ (3,415 ) $ 235 $ (3,180 ) $ (179 ) $ 14,716 Asset-based lending 5,837 — — — 991 6,828 Payroll finance 1,658 (2 ) 5 3 522 2,183 Warehouse lending 2,787 — — — (102 ) 2,685 Factored receivables 1,321 (18 ) 2 (16 ) 203 1,508 Equipment financing 8,841 (829 ) 85 (744 ) 3,056 11,153 Public sector finance 1,354 — — — 90 1,444 CRE 26,870 (359 ) 612 253 4,345 31,468 Multi-family 7,389 (168 ) 4 (164 ) 457 7,682 ADC 2,172 — — — (296 ) 1,876 Residential mortgage 5,917 (114 ) 5 (109 ) 992 6,800 Consumer 3,805 (458 ) 254 (204 ) (579 ) 3,022 Total allowance for loan losses $ 86,026 $ (5,363 ) $ 1,202 $ (4,161 ) $ 9,500 $ 91,365 Annualized net charge-offs to average loans outstanding: 0.08 % For the nine months ended September 30, 2019 Beginning Charge-offs Recoveries Net Provision/ (credit) Ending balance Traditional C&I $ 14,201 $ (5,716 ) $ 720 $ (4,996 ) $ 5,261 $ 14,466 Asset-based lending 7,979 (13,128 ) — (13,128 ) 19,117 13,968 Payroll finance 2,738 (84 ) 12 (72 ) (729 ) 1,937 Warehouse lending 2,800 — — — (2,253 ) 547 Factored receivables 1,064 (73 ) 128 55 (103 ) 1,016 Equipment financing 12,450 (5,295 ) 632 (4,663 ) 8,322 16,109 Public sector finance 1,739 — — — (200 ) 1,539 CRE 32,285 (308 ) 845 537 (711 ) 32,111 Multi-family 8,355 — 199 199 1,002 9,556 ADC 1,769 (6 ) — (6 ) 2,403 4,166 Residential mortgage 7,454 (3,758 ) 128 (3,630 ) 3,548 7,372 Consumer 2,843 (1,151 ) 513 (638 ) (257 ) 1,948 Total allowance for loan losses $ 95,677 $ (29,519 ) $ 3,177 $ (26,342 ) $ 35,400 $ 104,735 Annualized net charge-offs to average loans outstanding: 0.17 % For the nine months ended September 30, 2018 Beginning Charge-offs Recoveries Net Provision/ (credit) Ending balance Traditional C&I $ 19,072 $ (8,818 ) $ 674 $ (8,144 ) $ 3,788 $ 14,716 Asset-based lending 6,625 — 9 9 194 6,828 Payroll finance 1,565 (316 ) 34 (282 ) 900 2,183 Warehouse lending 3,705 — — — (1,020 ) 2,685 Factored receivables 1,395 (181 ) 7 (174 ) 287 1,508 Equipment financing 4,862 (7,505 ) 347 (7,158 ) 13,449 11,153 Public sector finance 1,797 — — — (353 ) 1,444 CRE 24,945 (4,878 ) 702 (4,176 ) 10,699 31,468 Multi-family 3,261 (168 ) 7 (161 ) 4,582 7,682 ADC 1,680 (721 ) — (721 ) 917 1,876 Residential mortgage 5,819 (697 ) 54 (643 ) 1,624 6,800 Consumer 3,181 (1,074 ) 482 (592 ) 433 3,022 Total allowance for loan losses $ 77,907 $ (24,358 ) $ 2,316 $ (22,042 ) $ 35,500 $ 91,365 Annualized net charge-offs to average loans outstanding: 0.15 % Credit Quality Indicators As part of the ongoing monitoring of the credit quality of our loan portfolio, management tracks certain credit quality indicators, including trends related to: (i) the weighted-average risk grade of commercial loans; (ii) the level of classified commercial loans; (iii) the delinquency status of residential mortgage and consumer loans, including home equity lines of credit (“HELOC”) and other consumer loans; (iv) net charge-offs; (v) non-performing loans (see details above); and (vi) the general economic conditions in the greater New York metropolitan region. We analyze loans individually by classifying the loans by credit risk, except residential mortgage loans, HELOC and other consumer loans, which are evaluated on a homogeneous pool basis unless the loan balance is greater than $750 . This analysis is performed at least quarterly on all graded 7-Special Mention and lower loans. We use the following definitions of risk ratings: 1 and 2 - These grades include loans that are secured by cash, marketable securities or cash surrender value of life insurance policies. 3 - This grade includes loans to borrowers with strong earnings and cash flow that have the ability to service debt. The borrower’s assets and liabilities are generally well-matched and are above average quality. The borrower has ready access to multiple sources of funding, including alternatives such as term loans, private equity placements or trade credit. 4 - This grade includes loans to borrowers with above average cash flow, adequate earnings and debt service coverage ratios. The borrower generates discretionary cash flow, assets and liabilities are reasonably matched, and the borrower has access to other sources of debt funding or additional trade credit at market rates. 5 - This grade includes loans to borrowers with adequate earnings and cash flow and reasonable debt service coverage ratios. Overall leverage is acceptable and there is average reliance upon trade credit. Management has a reasonable amount of experience and depth, and owners are willing to invest available outside capital, as necessary. 6 - This grade includes loans to borrowers where there is evidence of some strain, earnings are inconsistent and volatile, and the borrowers’ outlook is uncertain. Generally, such borrowers have higher leverage than those with a better risk rating. These borrowers typically have limited access to alternative sources of bank debt and may be dependent upon debt funding for working capital support. 7 - Special Mention (OCC definition) - Other Assets Especially Mentioned are loans that have potential weaknesses which may, if not reversed or corrected, weaken the asset or inadequately protect the Bank’s credit position at some future date. Such assets constitute an undue and unwarranted credit risk but not to the point of justifying a classification of “Substandard.” The credit risk may be relatively minor yet constitute an unwarranted risk in light of the circumstances surrounding a specific asset. 8 - Substandard (OCC definition) - These loans are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified must have a well-defined weakness that jeopardizes the liquidation of the debt. They are characterized by the distinct possibility that the Bank will sustain some losses if the deficiencies are not corrected. Loss potential, while existing in the aggregate amount of substandard assets, does not have to exist in individual assets classified as substandard. 9 - Doubtful (OCC definition) - These loans have all the weakness inherent in one classified as “Substandard” with the added characteristics that the weakness makes 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 reasonably specific pending factors which may work to the advantage and strengthening of the asset, its classification as an estimated loss is deferred until its more exact status may be determined. Pending factors may include a proposed merger, acquisition, liquidating procedures, capital injection, perfecting liens or additional collateral and refinancing plans. 10 - Loss (OCC definition) - These loans are charged-off because they are determined to be uncollectible and unbankable assets. This classification does not indicate that the asset has no absolute recovery or salvage value, but rather it is not practical or desirable to defer writing-off this asset even though partial recovery may be effected in the future. Losses should be taken in the period in which they are determined to be uncollectible. Loans that are risk-rated 1 through 6 as defined above are considered to be pass-rated loans. As of September 30, 2019 , the risk category of gross loans by segment was as follows: Special Mention Substandard Originated Acquired Total Originated Acquired Total Traditional C&I $ 15,159 $ 60 $ 15,219 $ 36,409 $ 879 $ 37,288 Asset-based lending 27,931 30,304 58,235 24,922 — 24,922 Payroll finance 201 — 201 16,923 — 16,923 Equipment financing 11,956 7,482 19,438 44,402 — 44,402 CRE 22,760 9,608 32,368 54,219 5,375 59,594 Multi-family 6,421 2,756 9,177 19,181 728 19,909 ADC 1,855 — 1,855 961 — 961 Residential mortgage 387 — 387 37,458 24,205 61,663 Consumer 92 — 92 9,294 3,019 12,313 Total $ 86,762 $ 50,210 $ 136,972 $ 243,769 $ 34,206 $ 277,975 At September 30, 2019 , there were $44,278 of special mention loans and $122,641 of substandard loans that were originally considered acquired loans but were migrated to the originated loans portfolio as they have been designated criticized or classified status or have been placed on non-accrual since the acquisition date. As of December 31, 2018 , the risk category of gross loans by segment was as follows: Special Mention Substandard Originated Acquired Total Originated Acquired Total Traditional C&I $ 12,003 $ 99 $ 12,102 $ 51,903 $ 128 $ 52,031 Asset-based lending 14,033 — 14,033 21,865 — 21,865 Payroll finance 9,682 — 9,682 17,766 — 17,766 Factored receivables — — — 508 — 508 Equipment financing 9,966 — 9,966 21,256 — 21,256 CRE 3,852 10,160 14,012 43,336 8,126 51,462 Multi-family 33,321 10,490 43,811 20,812 3,542 24,354 ADC — — — 434 — 434 Residential mortgage 5,179 2,231 7,410 29,475 36,431 65,906 Consumer 1,919 245 2,164 7,223 3,242 10,465 Total $ 89,955 $ 23,225 $ 113,180 $ 214,578 $ 51,469 $ 266,047 At December 31, 2018 , there were $51,282 of special mention loans and $95,575 of substandard loans that were originally considered acquired loans but were migrated to the originated loans portfolio as they have been designated criticized or classified status or have been placed on non-accrual since the acquisition date. At September 30, 2019 , there were no loans rated doubtful. At December 31, 2018 , there were $59 of originated consumer loans rated doubtful. There were no loans rated loss at September 30, 2019 or December 31, 2018

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The balance of goodwill and other intangible assets for the periods presented were as follows: September 30, December 31, 2019 2018 Goodwill $ 1,657,814 $ 1,613,033 Other intangible assets: Core deposits $ 90,507 $ 104,263 Customer lists 4,142 4,740 Non-compete agreements — 42 Trade name 20,500 20,500 Total $ 115,149 $ 129,545 The increase in goodwill at September 30, 2019 compared to December 31, 2018 was due to the Woodforest Acquisition. See Note 2. “Acquisitions” for additional information. The decrease in other intangible assets at September 30, 2019 compared to December 31, 2018 was due to amortization of intangibles. The estimated aggregate future amortization expense for intangible assets remaining as of September 30, 2019 was as follows: Amortization expense Remainder of 2019 $ 4,785 2020 16,800 2021 15,104 2022 13,703 2023 12,322 2024 10,448 Thereafter 21,487 Total $ 94,649

Deposits

Deposits	9 Months Ended
	Sep. 30, 2019
Deposits [Abstract]
Deposits	Deposits Deposit balances at September 30, 2019 and December 31, 2018 were as follows: September 30, December 31, 2019 2018 Non-interest bearing demand $ 4,586,632 $ 4,241,923 Interest bearing demand 4,236,267 4,207,392 Savings 2,348,903 2,382,520 Money market 7,493,074 7,905,382 Certificates of deposit 2,914,448 2,476,931 Total deposits $ 21,579,324 $ 21,214,148 Total municipal deposits, which are included in the deposit balances above, were $2,234,630 and $1,751,670 at September 30, 2019 and December 31, 2018 , respectively. See Note 3. “Securities” for the aggregate amount of securities that were pledged as collateral for municipal deposits and other purposes. Brokered deposits at September 30, 2019 and December 31, 2018 were as follows: September 30, December 31, 2019 2018 Interest bearing demand $ 22,908 $ 23,742 Money market 1,027,549 1,134,081 Certificates of deposits 227,971 — Total brokered deposits $ 1,278,428 $ 1,157,823

Borrowings

Borrowings	9 Months Ended
	Sep. 30, 2019
Debt Instruments [Abstract]
Borrowings	Borrowings Our borrowings and weighted average interest rates were as follows for the periods presented: September 30, December 31, 2019 2018 Amount Rate Amount Rate By type of borrowing: FHLB borrowings $ 2,800,907 2.16 % $ 4,838,772 2.40 % Repurchase agreements 26,544 1.20 21,338 1.20 Senior Notes 173,652 3.19 181,130 3.19 Subordinated Notes 173,121 5.45 172,943 5.45 Total borrowings $ 3,174,224 2.41 % $ 5,214,183 2.52 % By remaining period to maturity: Less than one year $ 1,900,440 2.31 % $ 3,958,635 2.48 % One to two years 1,075,663 2.10 831,889 2.28 Two to three years 25,000 1.71 250,716 2.04 Greater than five years 173,121 5.45 172,943 5.45 Total borrowings $ 3,174,224 2.41 % $ 5,214,183 2.52 % FHLB borrowings. As a member of the FHLB, the Bank may borrow up to a discounted percentage of the amount of eligible mortgages and securities that have been pledged as collateral under a blanket security agreement. As of September 30, 2019 and December 31, 2018 , the Bank had total residential mortgage and commercial real estate loans pledged after discount of $7,729,593 and $8,526,247 , respectively. In addition to the pledged mortgages, the Bank had also pledged securities to secure borrowings, which are disclosed in Note 3. “Securities.” As of September 30, 2019 , the Bank had unused borrowing capacity at the FHLB of $4,721,450 and may increase such borrowing capacity by pledging securities not required to be pledged for other purposes with a collateral value of approximately $2,629,582 . Repurchase agreements. The Bank enters into sales of securities under agreements to repurchase. These repurchase agreements facilitate the needs of our customers and a portion of our secured short-term funding needs. Securities sold under agreements to repurchase at September 30, 2019 and December 31, 2018 are secured short-term borrowings that mature in one to 45 days and are generally renewed on a continuous basis. Repurchase agreements are stated at the amount of cash received in connection with these transactions. The securities pledged under these repurchase agreements fluctuate in value due to market conditions. The Bank is obligated to promptly transfer additional securities if the market value of the securities falls below the repurchase agreement price. Securities pledged as collateral under repurchase agreements are maintained with our safekeeping agents. Senior Notes. On October 2, 2017 , in connection with the Astoria Merger, we assumed $ 200,000 principal amount of 3.50% fixed rate senior notes that mature on June 8, 2020 (the “Senior Notes”). The Senior Notes were issued by Astoria on June 8, 2017 through a public offering. We recorded the Senior Notes at an estimated fair value of 100.76% on the acquisition date, which was based on the quoted market value. The fair value adjustment, with a remaining balance of $ 279 at September 30, 2019 , is being amortized over the remaining maturity using a level-yield methodology, which results in an effective cost of 3.19% . During the nine months ended September 30, 2019 , we repurchased $7,000 of the Senior Notes and recorded a gain of $46 . During the fourth quarter of 2018, we reacquired $19,627 of the Senior Notes. Subordinated Notes . On March 29, 2016 , the Bank issued $110,000 principal amount of 5.25% fixed-to-floating rate subordinated notes (the “Subordinated Notes”) through a private placement at a discount of 1.25% . The cost of issuance was $500 . On September 2, 2016, the Bank reopened the Subordinated Notes offering and issued an additional $65,000 principal amount of Subordinated Notes. The Subordinated Notes issued September 2, 2016 are fully fungible with, rank equally in right of payment with, and form a single series with the Subordinated Notes issued in March 2016. The Subordinated Notes issued in September 2016 were issued to the purchasers at a premium of 0.50% and an underwriters discount of 1.25% . The cost of issuance was $275 . At September 30, 2019 , the net unamortized discount of all Subordinated Notes was $1,879 , which will be accreted to interest expense over the life of the Subordinated Notes, resulting in an effective yield of 5.45% . Interest is due semi-annually in arrears on April 1 and October 1 of each year, until April 1, 2021 . From and including April 1, 2021 , the Subordinated Notes will bear interest at a floating rate per annum equal to three-month LIBOR plus 3.937% , payable quarterly on January 1 , April 1 , July 1 and October 1 of each year, beginning on July 1, 2021 , through maturity on April 1, 2026 or earlier redemption. The Subordinated Notes are redeemable by the Bank, in whole or in part, on April 1, 2021 and each interest payment date thereafter. The Subordinated Notes are redeemable in whole at any time upon the occurrence of certain specified events. The Subordinated Notes are unsecured, subordinated obligations of the Bank and are subordinated in right of payment to all of the Bank’s existing and future senior indebtedness, including claims of depositors and general creditors. The Subordinated Notes qualify as Tier 2 capital for regulatory purposes. See Note 16. “Stockholders’ Equity” for additional information. Revolving line of credit. Effective August 27, 2019 , we renewed our $35,000 revolving line of credit facility (the “Credit Facility”). The Credit Facility, which is with another financial institution, matures on August 31, 2020 . The balance was zero at September 30, 2019 and December 31, 2018 . The use of proceeds are for general corporate purposes. The Credit Facility and accrued interest is payable at maturity, and we are required to maintain a zero balance for at least 30 days during its term. Loans under the Credit Facility bear interest at one-month LIBOR plus 1.25% . Under the terms of the Credit Facility, we must maintain certain ratios related to capital, non-performing assets to capital, reserves to non-performing loans and debt service coverage. We were in compliance with all requirements of the Credit Facility at September 30, 2019

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Leases	Leases At September 30, 2019 , operating lease right-of-use assets of $113,985 and operating lease liabilities of $120,700 were included in other assets and other liabilities, respectively, on our consolidated balance sheet. We do not have any significant finance leases in which we are the lessee. We have operating leases for financial centers, back-office operations locations, business development offices, information technology data centers and equipment. Our leases have remaining terms of one year to 16 years, some of which include options to extend the lease for up to 10 years and some of which include options to terminate the lease within two years . Sub-leases are not material to our financial statements and were not considered in the right-of-use asset or lease liability. The components of lease expense were as follows: Three months ended Nine months ended September 30, 2019 September 30, 2019 Operating lease expense $ 4,913 $ 14,695 Sub-lease income (845 ) (2,002 ) Net lease expense $ 4,068 $ 12,693 Net lease expense for the three and nine months ended September 30, 2018 , prior to the adoption of ASU 2016-02, was $4,572 and $13,972 , respectively. Future minimum payments for operating leases with initial or remaining terms of one year or more as of September 30, 2019 were as follows: Remainder of 2019 $ 4,968 2020 19,379 2021 17,823 2022 16,109 2023 14,504 2024 12,703 2025 and thereafter 54,229 Total lease payments 139,715 Interest 19,015 Present value of lease liabilities $ 120,700 Lease Term and Discount Rate: September 30, 2019 Weighted average remaining lease term (years) 8.21 Weighted average remaining discount rate 3.25 %

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedges, Assets [Abstract]
Derivatives	Derivatives We have entered into certain interest rate swap contracts that are not designated as hedging instruments. These derivative contracts relate to transactions in which we enter into an interest rate swap with a customer while at the same time entering into an offsetting interest rate swap with another financial institution. In connection with each swap transaction, we agree to pay interest to the customer on a notional amount at a variable interest rate and receive interest from the customer on a similar notional amount at a fixed interest rate. At the same time, we agree to pay another financial institution the same fixed interest rate on the same notional amount and receive the same variable interest rate on the same notional amount. The transaction allows our customers to effectively convert a variable rate loan to a fixed rate loan. Because we act as an intermediary for our customers, changes in the fair value of the underlying derivative contracts largely offset each other and do not materially impact our results of operations. We have entered into interest rate swap contracts that are both over-the-counter, or OTC, and those that are exchanged on futures markets such as the Chicago Mercantile Exchange (“CME”). At September 30, 2019 and December 31, 2018 , the OTC derivatives are included in our financial statements at the gross fair value amount of the asset (included in other assets) and liability (included in other liabilities), which represents the change in the fair value of the contract since inception. The CME legally characterizes variation margin payments (a payment made based on changes in the fair value of the interest rate swap contracts) as a settlement, referred to as settled-to-market (“STM”). As a result, at September 30, 2019 and December 31, 2018 , we posted cash collateral under STMs in the amounts of $58,844 and $5,214 , respectively, for the net fair value of our CME interest rate swap contracts with another financial institution. The increase was mainly due to an increase in swap contracts and changes in the fair value of the underlying interest rate swap contracts, which may change daily, positively or negatively, mainly due to changes in interest rates. We do not typically require our commercial customers to post cash or securities as collateral on its program of back-to-back swaps. However, certain language is written into the International Swaps and Derivatives Association agreement and loan documents where, in default situations, we are allowed to access collateral supporting the loan relationship to recover any losses suffered on the derivative asset or liability. Summary information as of September 30, 2019 and December 31, 2018 regarding these derivatives is presented below: Notional amount Average maturity (in years) Weighted average fixed rate Weighted average variable rate Fair value September 30, 2019 Included in other assets: Third-party interest rate swap $ 143,241 $ 140 Customer interest rate swap 1,492,859 84,849 Total $ 1,636,100 5.37 4.54 % 1 m Libor + 2.22% $ 84,989 Included in other liabilities: Third-party interest rate swap $ (1,492,859 ) $ (26,023 ) Customer interest rate swap (143,241 ) (122 ) Total $ (1,636,100 ) 5.37 4.54 % 1 m Libor + 2.22% $ (26,145 ) December 31, 2018 Included in other assets: Third-party interest rate swap $ 516,419 $ 1,963 Customer interest rate swap 556,934 16,252 Total $ 1,073,353 5.90 4.65 % 1 m Libor + 2.29% $ 18,215 Included in other liabilities: Third-party interest rate swap $ (556,934 ) $ (4,351 ) Customer interest rate swap (516,419 ) (8,650 ) Total $ (1,073,353 ) 5.90 4.65 % 1 m Libor + 2.29% $ (13,001 )

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Actual income tax expense differs from the tax computed based on pre-tax income and the applicable statutory federal tax rate for the following reasons: For the three months ended For the nine months ended September 30, September 30, 2019 2018 2019 2018 Income before income tax expense $ 154,996 $ 146,821 $ 405,364 $ 421,305 Tax at federal statutory rate of 21% 32,549 30,833 85,126 88,474 State and local income taxes, net of federal tax benefit 9,469 7,330 22,347 21,284 Tax exempt interest, net of disallowed interest (5,429 ) (4,970 ) (15,985 ) (14,435 ) BOLI income (2,441 ) (861 ) (4,103 ) (2,406 ) Low income housing tax credits and other benefits (5,431 ) (401 ) (14,592 ) (2,903 ) Low income housing investment amortization expense 4,627 — 12,510 — Equity-based stock compensation benefit — — (106 ) (441 ) FDIC insurance premium limitation 239 466 717 1,483 Other, net (1,034 ) (5,226 ) (894 ) (2,514 ) Actual income tax expense $ 32,549 $ 27,171 $ 85,020 $ 88,542 Effective income tax rate 21.0 % 18.5 % 21.0 % 21.0 % Net deferred tax liabilities totaled $13,170 at September 30, 2019 compared to net deferred tax assets of $53,990 at December 31, 2018 . The decline in net deferred tax assets at September 30, 2019 compared to December 31, 2018 was mainly due to the change from an unrealized loss to an unrealized gain on available for sale securities. No valuation allowance was recorded against any deferred tax assets as of those dates, based upon management’s consideration of historical and anticipated future pre-tax income, and the reversal periods for the items resulting in deferred tax assets and liabilities. There were no unrecognized tax benefits during any of the reported periods. Interest and/or penalties related to income taxes are reported as a component of other non-interest expense. Such amounts were not material during the reported periods. We are generally no longer subject to examination by federal, state and local taxing authorities for tax years prior to December 31, 2015.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Stock-Based Compensation	Stock-Based Compensation We have one active stock-based compensation plan, as described below. Our stockholders approved the 2015 Omnibus Equity and Incentive Plan (the “2015 Plan”) on May 28, 2015. The 2015 Plan permitted the grant of stock options, stock appreciation rights, restricted stock (both time-based and performance-based), restricted stock units, deferred stock and other stock-based awards. The total number of shares that could be awarded under the 2015 Plan was 2,800,000 shares, plus the remaining shares available for grant under the 2014 Stock Incentive Plan as of the date of adoption of the 2015 Plan. On May 29, 2019, our stockholders approved the Amended and Restated 2015 Omnibus Plan (the “Amended Omnibus Plan”). The Amended Omnibus Plan increased the shares available for issuance to 7,000,000 from 4,454,318 , and updated certain tax-related provisions as a result of the Tax Cuts and Jobs Act and related administrative changes. The amendment increased the number of shares reserved for issuance thereunder by 2,545,682 shares. The Amended Omnibus Plan provides for the granting of the same instruments as the 2015 Plan, and one share is deducted for every share that is awarded and delivered under the Amended Omnibus Plan. At September 30, 2019 , there were an aggregate amount of 3,371,609 shares available for future grant under the Amended Omnibus Plan. Restricted stock awards are granted with a fair value equal to the market price of our common stock at the date of grant. Stock option awards are granted with a strike price that is equal to the market price of our common stock at the date of grant. The restricted stock awards generally vest in equal installments annually on the anniversary date of grant and have total vesting periods ranging from one year to five years , while stock options have 10 -year contractual terms. The following table summarizes the activity in our stock-based compensation plan for the nine months ended September 30, 2019 : Non-vested stock awards/stock units outstanding Stock options outstanding Shares available for grant Number of shares Weighted average grant date fair value Number of shares Weighted average exercise price Balance at January 1, 2019 2,318,950 1,333,514 $ 22.12 686,539 $ 11.20 Amended 2015 Omnibus Equity and Incentive Plan 2,545,682 — — — — Granted (1,507,792 ) 1,507,792 19.63 — — Stock awards vested (1) (70,353 ) (553,432 ) 19.21 — — Exercised — — — (215,997 ) 11.09 Forfeited 86,622 (85,122 ) 22.30 (1,500 ) 10.03 Canceled/expired (1,500 ) — — — Balance at September 30, 2019 3,371,609 2,202,752 $ 20.98 469,042 $ 11.25 Exercisable at September 30, 2019 469,042 $ 11.25 (1) The 70,353 shares vested represents performance shares that were granted in February 2016 to certain executives with a three -year measurement period. These shares vested in the first quarter of 2019 at 150.0% of the target amount granted, which resulted in these additional shares being awarded and additional expense of $1,000 which was recorded in the first quarter of 2019. The total intrinsic value of outstanding in-the-money stock options and outstanding in-the-money exercisable stock options was $ 4,133 at September 30, 2019 . We use an option pricing model to estimate the grant date fair value of stock options granted. There were no stock options granted during the nine months ended September 30, 2019 or September 30, 2018 . Stock-based compensation expense is recognized ratably over the requisite service period for all awards. Stock-based compensation expense associated with stock options and non-vested stock awards and the related income tax benefit are presented below: For the three months ended For the nine months ended September 30, September 30, 2019 2018 2019 2018 Stock options $ — $ 2 $ — $ 5 Non-vested stock awards/performance units 4,565 3,113 14,293 9,299 Total $ 4,565 $ 3,115 $ 14,293 $ 9,304 Income tax benefit 959 654 3,002 1,954 Proceeds from stock option exercises 508 154 2,397 556 Unrecognized stock-based compensation expense as of September 30, 2019 was as follows: September 30, 2019 Stock options $ — Non-vested stock awards/performance units 32,405 Total $ 32,405 The weighted average period over which unrecognized non-vested stock awards/performance units expense is expected to be recognized is 1.99 years .

Pension and Other Post-Retireme

Pension and Other Post-Retirement Benefits	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Pension and Other Post-Retirement Benefits	Pension and Other Post-Retirement Benefits Total pension and other post-retirement benefits expense is comprised of the following for the periods presented below: For the three months ended September 30, 2019 September 30, 2018 Pension Benefits Other Post Retirement Benefits Pension Benefits Other Post Retirement Benefits Service cost $ — $ 15 $ — $ 20 Interest cost 3,044 265 2,121 254 Expected return on plan assets (4,044 ) — (3,353 ) — Net amortization and deferral — (82 ) — — Net periodic pension and other post-retirement (benefit) expense $ (1,000 ) $ 198 $ (1,232 ) $ 274 For the nine months ended September 30, 2019 September 30, 2018 Pension Benefits Other Post Retirement Benefits Pension Benefits Other Post Retirement Benefits Service cost $ — $ 45 $ — $ 62 Interest cost 8,382 835 6,364 780 Expected return on plan assets (10,303 ) — (10,058 ) — Net amortization and deferral — (247 ) — — Net periodic pension and other post-retirement (benefit) expense $ (1,921 ) $ 633 $ (3,694 ) $ 842 Total net periodic pension and other post-retirement (benefit) expense is included as a component of other non-interest expense. Our pension benefit plans include all of the assets and liabilities of the Astoria Excess and Supplemental Benefit Plans, the Astoria Directors’ Retirement Plan, the Greater New York Savings Bank Directors’ Retirement Plan and the Long Island Bancorp Directors’ Retirement Plan, which were assumed in the Astoria Merger. Our other post retirement benefit plans include the Astoria Bank Retiree Health Care Plan and the Astoria Bank BOLI plan, which were assumed in the Astoria Merger, and other non-qualified Supplemental Executive Retirement Plans (“SERPs”) that provide certain directors, officers and executives with supplemental retirement benefits. During the quarter ended September 30, 2019, we terminated the Astoria Bank Employees’ Pension Plan (the “Plan”). We purchased annuities from a third-party insurance carrier and made lump sum distributions as elected by Plan participants. In connection with the Plan termination, we recognized a net gain of $12,097 , which was mainly comprised of the remaining balance of accumulated other comprehensive income and related deferred taxes. A pension reversion asset of $16,538 was recorded in other assets in the consolidated balance sheets at September 30, 2019, and will be held in custody by the Bank’s 401(k) plan custodian. The pension reversion asset is expected to be charged to earnings over the next five to seven years as it is distributed to employees under qualified compensation and benefit programs. We contributed $214 and $41,825 to fund pension and other post retirement benefits during the three months ended September 30, 2019 and September 30, 2018 , respectively, and contributed $897 and $42,500 to fund pension and other post retirement benefits during the nine months ended September 30, 2019 and September 30, 2018 , respectively. The Astoria Bank Employees’ Pension Plan was overfunded by $13,608 at December 31, 2018 , and such overfunded amount was included in other assets in our consolidated balance sheet. The remaining pension benefit plans and other post retirement benefit plans are unfunded plans. At September 30, 2019 and December 31, 2018 , the unfunded amounts of $35,191 and $35,278

Non-Interest Income and Other N

Non-Interest Income and Other Non-Interest Expense	9 Months Ended
	Sep. 30, 2019
Other Income and Expenses [Abstract]
Non-Interest Income and Other Non-Interest Expense	Non-Interest Income and Other Non-Interest Expense (a) Non-Interest Income - Revenue from Contracts with Customers Our significant sources of non-interest income are presented on the face of the consolidated income statements. A description of our revenue streams follows: Deposit fees and service charges. We earn fees from our deposit customers mainly for transaction-based, account maintenance, and overdraft services. Transaction-based fees, which include services such as ATM use fees, stop payment charges, statement rendering, and ACH fees, are recognized at the time the transaction is executed as that is the point in time we fulfill the customer’s request. Account maintenance fees, which relate primarily to monthly maintenance, are earned over the course of a month, representing the period over which we satisfy the performance obligation. Overdraft fees are recognized at the point in time that the overdraft occurs. Service charges on deposits are withdrawn from the customer’s account balance. Accounts receivable management / factoring commissions and other fees. We earn these fees / commissions from our payroll finance and factoring businesses, as described below. Payroll finance. We provide financing and back-office support services, which include preparation of payroll, payroll tax payments, billings and collections, for clients in the temporary staffing industry. Upon completion of the back-office support services, and as payroll remittances are made on behalf of the client to fund their employee payroll, which typically occurs weekly, we recognize a portion of the total revenue generated as non-interest income. We collect invoices directly from the borrower’s customers, retain the amounts billed for the temporary staffing services provided, and remit the remaining funds to the borrower net of amounts advanced, payroll taxes withheld, our fees, and subject to a reserve to offset potential uncollectible balances. Factored Receivables. We provide accounts receivable management services. The purchase of a client’s accounts receivable is traditionally known as “factoring” and results in payment by the client of a factoring fee. The factoring fee included in non-interest income represents compensation to us for the bookkeeping and collection services provided. The factoring fee, which is non-refundable, is recognized at the time the receivable is assigned to us. Other revenue associated with factored receivables includes wire fees, technology fees, field examination fees and UCC fees. All such fees are recognized as income upon receipt, which is when our obligations are provided to our customers. Investment management fees. We earn investment management fees from our contracts with customers to manage assets for investment, and / or to transact on their accounts. Advisory fees are primarily earned over time as we provide the contracted monthly or quarterly services and are generally assessed based on a tiered scale calculated on the market value of assets under management at month end. Fees that are transaction-based, including trade execution services, are recognized on the trade date. Gains / Losses on sales of other real estate owned (“OREO”). We record a gain or loss from the sale of OREO when control of the property transfers to the buyer, which generally occurs at the time of an executed deed. When we finance the sale of OREO to the buyer, we assess whether the buyer is committed to perform its obligations under the contract and whether collectability of the transaction price is probable. Once these criteria are met, the OREO asset is derecognized and the gain or loss on sale is recorded upon the transfer of control of the property to the buyer. In determining the gain or loss on the sale, we may adjust the transaction price and related gain (loss) on sale if a significant financing component is present. Gain on termination of pension plan. See Note 13. Pension and Other Post-Retirement Benefits for information regarding the termination of the Astoria pension plan. Contract Balances. A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity’s obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. Our non-interest revenue streams are largely based on transactional activity, or standard month-end revenue accruals such as investment management fees based on period-end market values. Consideration is often received immediately or shortly after we satisfy our performance obligation and revenue is recognized. We do not typically enter into long-term revenue contracts with customers, and therefore, do not experience significant contract balances. As of September 30, 2019 and December 31, 2018 , we did not have any significant contract balances. (b) Other Non-Interest Expense Other non-interest expense items for the three and nine months ended September 30, 2019 and 2018 , respectively, are presented in the following table: For the three months ended For the nine months ended September 30, September 30, 2019 2018 2019 2018 Other non-interest expense: Professional fees $ 4,438 $ 2,866 $ 14,966 $ 9,269 Advertising and promotion 2,514 1,147 4,889 3,962 Telephone 1,511 1,238 5,115 4,500 Operational losses 536 791 3,026 2,945 Insurance & surety bond premium 982 1,299 3,050 2,680 Other 6,620 5,832 22,573 16,324 Total other non-interest expense $ 16,601 $ 13,173 $ 53,619 $ 39,680

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share The following is a summary of the calculation of earnings per common share (“EPS”): For the three months ended For the nine months ended September 30, September 30, 2019 2018 2019 2018 Net income available to common stockholders $ 120,465 $ 117,657 $ 314,386 $ 326,775 Weighted average common shares outstanding for computation of basic EPS 203,090,365 225,088,511 207,685,051 224,969,121 Common-equivalent shares due to the dilutive effect of stock options and unvested performance share grants (1) 476,217 534,384 423,524 535,342 Weighted average common shares for computation of diluted EPS 203,566,582 225,622,895 208,108,575 225,504,463 EPS (2) : Basic $ 0.59 $ 0.52 $ 1.51 $ 1.45 Diluted 0.59 0.52 1.51 1.45 (1) Represents incremental shares computed using the treasury stock method. (2) Anti-dilutive shares are not included in determining diluted EPS. There were no anti-dilutive shares in the three or nine months ended September 30, 2019 or September 30, 2018 .

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2019
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Stockholders’ Equity (a) Regulatory Capital Requirements Banks and bank holding companies are subject to various regulatory capital requirements administered by the federal banking agencies. Capital adequacy guidelines, and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators about components, risk-weighting, and other factors. The Company’s and the Bank’s Common Equity Tier 1 capital consists of common stock and related paid-in capital, net of treasury stock, and retained earnings. In connection with the adoption of the Basel III Capital Rules, we elected to opt-out of the requirement to include most components of accumulated other comprehensive income in Common Equity Tier 1 capital. Common Equity Tier 1 capital for both the Company and the Bank is reduced by goodwill and other intangible assets, net of associated deferred tax liabilities and subject to transition provisions. Tier 1 capital includes Common Equity Tier 1 capital and additional Tier 1 capital. Total capital includes Tier 1 capital and Tier 2 capital. Tier 2 capital (as defined in the regulations) for both the Bank and us includes a permissible portion of the allowance for loan losses and $173,121 and $147,186 of the Subordinated Notes, respectively. During the final five years of the term of the Subordinated Notes, the permissible portion eligible for inclusion in Tier 2 capital decreases by 20% annually. The Common Equity Tier 1, Tier 1 and Total capital ratios are calculated by dividing the respective capital amounts by risk-weighted assets (“RWA”). RWA is calculated based on regulatory requirements and includes total assets, excluding goodwill and other intangible assets, allocated by risk weight category, and certain off-balance-sheet items, among other items. The following tables present actual and required capital ratios as of September 30, 2019 and December 31, 2018 for us and the Bank under the Basel III Capital Rules. The Basel III Capital Rules became fully phased-in on January 1, 2019. The minimum required capital amounts presented as of September 30, 2019 and December 31, 2018 are based on the fully phased-in provisions of the Basel III Capital Rules. Capital levels required to be considered well-capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. Actual Minimum capital required - Basel III Required to be considered well- capitalized Capital amount Ratio Capital amount Ratio Capital amount Ratio September 30, 2019 Common equity tier 1 to RWA: Sterling National Bank $ 2,817,082 12.73 % $ 1,548,458 7.00 % $ 1,437,854 6.50 % Sterling Bancorp 2,596,901 11.73 1,549,838 7.00 N/A N/A Tier 1 capital to RWA: Sterling National Bank 2,817,082 12.73 % 1,880,270 8.50 % 1,769,666 8.00 % Sterling Bancorp 2,734,699 12.35 1,881,946 8.50 N/A N/A Total capital to RWA: Sterling National Bank 3,095,592 13.99 % 2,322,687 10.50 % 2,212,083 10.00 % Sterling Bancorp 2,987,273 13.49 2,324,757 10.50 N/A N/A Tier 1 leverage ratio: Sterling National Bank 2,817,082 10.08 % 1,117,759 4.00 % 1,397,198 5.00 % Sterling Bancorp 2,734,699 9.78 1,118,770 4.00 N/A N/A Actual Minimum capital required - Basel III phase-in schedule Minimum capital required - Basel III fully phased-in Required to be considered well- capitalized Capital amount Ratio Capital amount Ratio Capital amount Ratio Capital amount Ratio December 31, 2018 Common equity tier 1 to RWA: Sterling National Bank $ 2,915,484 13.55 % $ 1,371,480 6.375 % $ 1,505,939 7.00 % $ 1,398,372 6.50 % Sterling Bancorp 2,649,593 12.31 1,372,457 6.375 1,507,011 7.00 N/A N/A Tier 1 capital to RWA: Sterling National Bank 2,915,484 13.55 % 1,694,181 7.875 % 1,828,640 8.50 % 1,721,073 8.00 % Sterling Bancorp 2,788,016 12.95 1,695,388 7.875 1,829,942 8.50 N/A N/A Total capital to RWA: Sterling National Bank 3,184,758 14.80 % 2,124,450 9.875 % 2,258,908 10.50 % 2,151,341 10.00 % Sterling Bancorp 3,027,124 14.06 2,125,963 9.875 2,260,517 10.50 N/A N/A Tier 1 leverage ratio: Sterling National Bank 2,915,484 9.94 % 1,172,964 4.00 % 1,172,964 4.00 % 1,466,206 5.00 % Sterling Bancorp 2,788,016 9.50 1,173,883 4.00 1,173,883 4.00 N/A N/A The Bank and the Company are subject to the regulatory capital requirements administered by the FRB, and, for the Bank, the Office of the Comptroller of the Currency. Regulatory authorities can initiate certain mandatory actions if the Bank or the Company fails to meet the minimum capital requirements, which could have a direct material effect on our financial statements. As of September 30, 2019 , and December 31, 2018 , the most recent regulatory notifications categorized the Company and the Bank as well capitalized under the regulatory framework for prompt corrective action. There are no conditions or events since that notification that management believes have changed the classification. (b) Dividend Restrictions We are mainly dependent on dividends from the Bank to provide funds for the payment of dividends to stockholders and to provide for other cash requirements. Banking regulations may limit the amount of dividends that may be paid. Approval by regulatory authorities is required if the effect of dividends declared would cause the regulatory capital of the Bank to fall below specified minimum levels. Approval is also required if dividends declared exceed the net profits for that fiscal year combined with the retained net profits for the preceding two fiscal years. Under the foregoing dividend restrictions and while maintaining its “well-capitalized” status, at September 30, 2019 , the Bank had capacity to pay aggregate dividends of up to $165,000 to us without prior regulatory approval. (c) Stock Repurchase Plans From time to time, our Board of Directors has authorized stock repurchase plans. Repurchases may be made at management’s discretion through open market purchases and block trades in accordance with SEC and regulatory requirements. Any common shares purchased will be held as Treasury stock and made available for general corporate purposes. In the nine months ended September 30, 2019 , there were 15,312,694 shares repurchased under the repurchase program and none during the nine months ended September 30, 2018 . On April 24, 2019, our Board of Directors increased the number of shares authorized for repurchase from 10,000,000 common shares to 20,000,000 common shares. As of September 30, 2019 , there was remaining capacity of 5,572,535 shares for repurchase under our current approved program.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies (a) Off-Balance Sheet Financial Instruments In the normal course of business, we enter into various transactions, which, in accordance with GAAP, are not included in our consolidated balance sheets. We enter into these transactions to meet the financing needs of our customers. These transactions include commitments to extend credit and standby letters of credit, which involve, to varying degrees, elements of credit risk and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. We minimize our exposure to losses under these commitments by subjecting them to credit approval and monitoring procedures. We enter into contractual commitments to extend credit, normally with fixed expiration dates or termination clauses, at specified rates and for specific purposes. Substantially all of our commitments to extend credit are contingent upon customers maintaining specific credit standards at the time of loan funding. Standby letters of credit are written conditional commitments issued by us to guarantee the performance of a customer to a third-party. In the event the customer does not perform in accordance with the terms of the agreement with the third-party, we would be required to fund the commitment. The maximum potential amount of future payments we could be required to make is represented by the contractual amount of the commitment. If the commitment were funded, we would be entitled to seek recovery from the customer. Based on our credit risk exposure assessment of our standby letter of credit arrangements, the arrangements contain security and debt covenants similar to those contained in loan agreements. The contractual or notional amounts of these instruments, which reflect the extent of our involvement in particular classes of off-balance sheet financial instruments, are summarized as follows: September 30, December 31, 2019 2018 Loan origination commitments $ 575,798 $ 417,027 Unused lines of credit 1,524,355 1,737,315 Letters of credit 308,689 287,779 (b) Litigation We and the Bank are involved in a number of judicial proceedings concerning matters arising from our and their business activities. These include routine legal proceedings arising in the ordinary course of business. These proceedings also include actions brought against us and the Bank with respect to corporate matters and transactions in which we and the Bank are or were involved. There can be no assurance as to the ultimate outcome of a legal proceeding; however, we and the Bank have generally denied liability in all significant litigation pending against us and intend to defend vigorously each case, other than matters that are determined appropriate to be settled. We and the Bank accrue a liability for legal claims when payments associated with the claims become probable and the costs can be reasonably estimated. The actual costs of resolving legal claims may be substantially higher or lower than the amounts accrued for those claims. At September 30, 2019 and December 31, 2018, we have no amounts accrued for litigation.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in an orderly transaction occurring in the principal or most advantageous market for such asset or liability between market participants on the measurement date. In estimating fair value, we use valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. Such valuation techniques are consistently applied. GAAP establishes a fair value hierarchy comprised of three levels of inputs that may be used to measure fair values. Level 1 Inputs – Unadjusted quoted prices in active markets for identical assets and liabilities that the reporting entity has the ability to access at the measurement date. Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risk, etc.) or inputs that are derived principally from, or corroborated by, market data by correlation or other means. Level 3 Inputs – Unobservable inputs for determining the fair value of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities. In general, fair value is based on quoted market prices, when available. If quoted market prices in active markets are not available, fair value is based on internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and our creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. Our valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes its valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Furthermore, the reported fair value amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein. A more detailed description of the valuation methodologies used for assets and liabilities measured at fair value is set forth below. Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincide with our monthly and/or quarterly valuation process. Investment Securities Available for Sale The majority of our available for sale investment securities are reported at fair value utilizing Level 2 inputs. For these securities, we obtain fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the securities’ terms and conditions, among other things. We review the prices supplied by the independent pricing service, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. In general, we do not purchase investment securities that have a complicated structure. Our entire portfolio consists of traditional investments, nearly all of which are mortgage pass-through securities, state and municipal general obligation or revenue bonds, U.S. agency bullet and callable securities and corporate bonds. Pricing for such instruments is fairly generic and is easily obtained. From time to time, we validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from third-party sources or derived using internal models. As of September 30, 2019 , management did not believe any of our securities are OTTI; however, management reviews all of our securities on at least a quarterly basis to assess whether impairment, if any, is OTTI. Derivatives The fair values of derivatives are based on valuation models using current observable market data (including interest rates and fees), the remaining terms of the agreements and the credit worthiness of the counterparty as of the measurement date, which are considered Level 2 inputs. Our derivatives are traded in an over-the-counter market where quoted market prices are not always available. Our derivatives at September 30, 2019 and December 31, 2018 consisted of interest rate swaps. See Note 10. “Derivatives” for additional information. A summary of assets and liabilities at September 30, 2019 and December 31, 2018 , respectively, measured at estimated fair value on a recurring basis, is as follows: September 30, 2019 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets: Investment securities available for sale: Residential MBS (1) : Agency-backed $ 1,602,821 $ — $ 1,602,821 $ — CMOs (2) /Other MBS 537,374 — 537,374 — Total residential MBS 2,140,195 — 2,140,195 — Other securities: Federal agencies 162,897 — 162,897 — Corporate 304,773 — 304,773 — State and municipal 453,554 — 453,554 — Total other securities 921,224 — 921,224 — Total available for sale securities 3,061,419 — 3,061,419 — Swaps 84,989 — 84,989 — Total assets $ 3,146,408 $ — $ 3,146,408 $ — Liabilities: Swaps $ (26,145 ) $ — $ (26,145 ) $ — Total liabilities $ (26,145 ) $ — $ (26,145 ) $ — December 31, 2018 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets: Investment securities available for sale: Residential MBS (1) : Agency-backed $ 2,268,851 $ — $ 2,268,851 $ — CMOs (2) /Other MBS 574,770 — 574,770 — Total residential MBS 2,843,621 — 2,843,621 — Federal agencies 273,973 — 273,973 — Corporate bonds 527,964 — 527,964 — State and municipal 225,004 — 225,004 — Total other securities 1,026,942 — 1,026,942 — Total available for sale securities 3,870,563 — 3,870,563 — Swaps 18,215 — 18,215 — Total assets $ 3,888,778 $ — $ 3,888,778 $ — Liabilities: Swaps $ (13,001 ) $ — $ (13,001 ) $ — Total liabilities $ (13,001 ) $ — $ (13,001 ) $ — (1) Residential MBS are debt securities whose cash flows come from residential mortgage and consumer loans, such as mortgages and HELOCs. A residential MBS is comprised of a pool of mortgage loans created by financial institutions, including governmental agencies. The cash flows from each mortgage loan included in the pool are structured through a special purpose entity into various classes and tranches, which then issues securities backed by those cash flows to investors. (2) CMOs are debt securities that are collateralized by a specific pool of residential mortgage loans, in which the issuer of the CMOs can direct the payments of principal and interest received on the underlying collateral to achieve specific investor cash flow objectives. The Bank generally acquires planned-amortization class securities and CMOs with a sequential pay structure in order to manage the duration and extension risk inherent in these securities. The following categories of financial assets are not measured at fair value on a recurring basis, but are subject to fair value adjustments in certain circumstances. Loans Held for Sale The estimated fair value of commercial loans originated and intended for sale approximates their carrying value as these loans are variable-rate loans that reprice frequently with no significant change in credit risk since origination. Residential loans held for sale are carried at the lower of cost or fair value, which is evaluated on a pool-level basis. Fair value is determined using quoted prices for similar assets, adjusted for specific attributes of that loan or other observable market data, such as outstanding commitments from third party investors. Impaired Loans We may record adjustments to the carrying value of loans based on fair value measurements, generally as partial charge-offs of the uncollectible portions of these loans. These adjustments also include certain impairment amounts for collateral dependent loans calculated in accordance with GAAP. Impairment amounts are generally based on the fair value of the underlying collateral supporting the loan and, as a result, the carrying value of the loan less the calculated impairment amount applicable to that loan generally approximates the fair value of the loan. Real estate collateral is valued using independent appraisals or other indications of value based on recent comparable sales of similar properties or assumptions generally observable by market participants. However, due to the substantial judgment applied and limited volume of activity as compared to other assets, fair value is based on Level 3 inputs. Estimates of fair value used for collateral supporting commercial loans not collateralized by real estate generally are based on assumptions not observable in the market place and are also based on Level 3 inputs. Impaired loans subject to non-recurring fair value measurements were $93,413 and $100,998 at September 30, 2019 and December 31, 2018 , respectively. Changes in fair value recognized as a charge-off on loans held by us were $18,220 and $10,477 for the nine months ended September 30, 2019 and 2018 , respectively. When an impaired loan is collateral dependent, we generally charge-off the difference between the recorded investment in the loan and the appraised value less cost to sell. A discount for estimated costs to dispose of the asset and overall marketability is used when estimating the amount of impairment. A summary of impaired loans by type that resulted in a charge-off at September 30, 2019 and December 31, 2018 , respectively, is set forth below: September 30, 2019 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Traditional C&I $ 14,718 $ — $ — $ 14,718 Asset-based lending 18,609 — — 18,609 CRE 12,665 — — 12,665 Multi-family 1,194 — — 1,194 Residential mortgage 2,951 — — 2,951 Total impaired loans measured at fair value $ 50,137 $ — $ — $ 50,137 December 31, 2018 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Traditional C&I $ 28,780 $ — $ — $ 28,780 CRE 10,725 — — 10,725 Multi-family 1,210 — — 1,210 Residential mortgage 769 — — 769 Total impaired loans measured at fair value $ 41,484 $ — $ — $ 41,484 Mortgage Servicing Rights We utilize the amortization method to account for mortgage servicing rights, which are amortized on a periodic basis, and reported with other assets in the consolidated balance sheets at the lower of amortized cost or fair value. To estimate the fair value of servicing rights, we utilize a third-party that considers the market prices for similar assets and the present value of expected future cash flows associated with the mortgage servicing rights. Mortgage servicing rights are evaluated for impairment based upon the fair value of the rights as compared to the carrying amount. If the carrying amount of an individual tranche exceeds fair value, impairment is recorded on that tranche so that the servicing asset is carried at fair value. Assumptions utilized to calculate fair value include estimates of the cost of servicing, loan default rates, an appropriate discount rate and prepayment speeds. The determination of fair value of servicing rights relies upon Level 3 inputs. At September 30, 2019 , the assumption for constant prepayment rates (“CPR”) ranged from 8.87% to 21.33% , with a weighted average CPR of 10.76% , and the assumption for market discount rate ranged from 9.50% to 20.00% , with a weighted average market discount rate of 9.85% . At December 31, 2018 , the CPR assumption ranged from 7.98% to 24.07% with a weighted average CPR of 8.54% , and the assumption for market discount rate ranged from 9.00% to 20.00% with a weighted average market discount rate of 9.60% The fair value of mortgage servicing rights at September 30, 2019 and December 31, 2018 was $8,983 and $11,715 , respectively. Other Real Estate Owned (Assets Taken in Foreclosure of Defaulted Loans) Other real estate owned is initially recorded at fair value less costs to sell when acquired, which establishes a new cost basis. These assets are subsequently accounted for at the lower of cost or fair value, less costs to sell, and are primarily comprised of commercial and residential real estate property. Upon initial recognition, other real estate owned is re-measured and reported at fair value through a charge-off to the allowance for loan losses based on the fair value of the underlying collateral. The fair value is generally determined using appraisals or other indications of value based on recent comparable sales of similar properties or assumptions generally observable in the market place. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between comparable sales and income data available. The fair value is derived using Level 3 inputs. All appraisals are reviewed by officers in our credit department; and appraisals related to commercial properties are also reviewed by an external appraisal review consultant. At September 30, 2019 and December 31, 2018 , appraisals were discounted by 22.0% , which considers estimated costs to sell and overall marketability of the properties. OREO, subject to non-recurring fair value measurement, was $13,006 and $19,377 at September 30, 2019 and December 31, 2018 , respectively. There were $742 and $553 of write-downs related to changes in fair value of OREO during the nine months ended September 30, 2019 and September 30, 2018 , respectively. Fair Value of Financial Instruments GAAP requires disclosure of fair value information for those financial instruments for which it is practicable to estimate fair value, whether or not such financial instruments are recognized in the consolidated financial statements for interim and annual periods. Quoted market prices are used to estimate fair values when those prices are available, although active markets do not exist for many types of financial instruments. Fair values for these instruments must be estimated by management using techniques such as discounted cash flow analysis and comparison to similar instruments. These estimates are highly subjective and require judgments regarding significant matters, such as the amount and timing of future cash flows and the selection of discount rates that appropriately reflect market and credit risks. Changes in these judgments often have a material effect on the fair value estimates. Since these estimates are made as of a specific point in time, they are susceptible to material near-term changes. Fair values disclosed in accordance with GAAP do not reflect any premium or discount that could result from the sale of a large volume of a particular financial instrument, nor do they reflect possible tax ramifications or estimated transaction costs. The following is a summary of the carrying amounts and estimated fair value of financial assets and liabilities (none of which were held for trading purposes) as of September 30, 2019 : September 30, 2019 Carrying amount Level 1 inputs Level 2 inputs Level 3 inputs Financial assets: Cash and cash equivalents $ 545,603 $ 545,603 $ — $ — Securities available for sale 3,061,419 — 3,061,419 — Securities held to maturity 1,985,592 — 2,061,887 — Loans held for sale 4,627 — 4,627 — Portfolio loans, net 20,725,428 — — 20,867,041 Accrued interest receivable on securities 33,815 — 33,815 — Accrued interest receivable on loans 71,066 — — 71,066 FHLB stock and FRB stock 276,929 — — — Swaps 84,989 — 84,989 — Financial liabilities: Non-maturity deposits (18,664,876 ) (18,664,876 ) — — Certificates of deposit (2,914,448 ) — (2,910,499 ) — FHLB borrowings (2,800,907 ) — (2,802,337 ) — Other borrowings (26,544 ) — (26,544 ) — Senior Notes (173,652 ) — (174,420 ) — Subordinated Notes (173,121 ) — (182,500 ) — Mortgage escrow funds (84,595 ) — (84,595 ) — Accrued interest payable on deposits (5,417 ) — (5,417 ) — Accrued interest payable on borrowings (14,239 ) — (14,239 ) — Swaps (26,145 ) — (26,145 ) — The following is a summary of the carrying amounts and estimated fair value of financial assets and liabilities (none of which were held for trading purposes) as of December 31, 2018 : December 31, 2018 Carrying amount Level 1 inputs Level 2 inputs Level 3 inputs Financial assets: Cash and cash equivalents $ 438,110 $ 438,110 $ — $ — Securities available for sale 3,870,563 — 3,870,563 — Securities held to maturity 2,796,617 — 2,740,522 — Loans held for sale 1,565,979 — 1,565,979 — Portfolio loans, net 19,122,853 — — 19,033,743 Accrued interest receivable on securities 38,722 — 38,722 — Accrued interest receivable on loans 68,389 — — 68,389 FHLB stock and FRB stock 369,690 — — — Swaps 18,215 — 18,215 — Financial liabilities: Non-maturity deposits (18,737,217 ) (18,737,217 ) — — Certificates of deposit (2,476,931 ) — (2,447,534 ) — FHLB borrowings (4,838,772 ) — (4,821,652 ) — Other borrowings (21,338 ) — (21,337 ) — Senior Notes (181,130 ) — (179,786 ) — Subordinated Notes (172,943 ) — (177,481 ) — Mortgage escrow funds (72,891 ) — (64,074 ) — Accrued interest payable on deposits (3,191 ) — (3,191 ) — Accrued interest payable on borrowings (11,823 ) — (11,823 ) — Swaps (13,001 ) — (13,001 ) —

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Components of accumulated other comprehensive income (loss) were as follows as of the dates shown below: September 30, December 31, 2019 2018 Net unrealized holding gain (loss) on available for sale securities $ 59,853 $ (103,756 ) Related income tax (expense) benefit (16,543 ) 28,679 Available for sale securities, net of tax 43,310 (75,077 ) Net unrealized holding loss on securities transferred to held to maturity (861 ) (3,518 ) Related income tax benefit 238 972 Securities transferred to held to maturity, net of tax (623 ) (2,546 ) Net unrealized holding gain on retirement plans 3,381 15,900 Related income tax expense (934 ) (4,222 ) Retirement plans, net of tax 2,447 11,678 Accumulated other comprehensive income (loss) $ 45,134 $ (65,945 ) The following table presents the changes in each component of accumulated other comprehensive income loss (“AOCI”) for the three and nine months ended September 30, 2019 and 2018 : Net unrealized holding gain (loss) on available for sale securities Net unrealized holding (loss) gain on securities transferred to held to maturity Net unrealized holding gain (loss) on retirement plans Total For the three months ended September 30, 2019 Balance beginning of the period $ 27,243 $ (709 ) $ 13,812 $ 40,346 Other comprehensive gain before reclassification 21,047 — — 21,047 Amounts reclassified from AOCI (4,980 ) 86 (11,365 ) (16,259 ) Total other comprehensive income 16,067 86 (11,365 ) 4,788 Balance at end of period $ 43,310 $ (623 ) $ 2,447 $ 45,134 For the three months ended September 30, 2018 Balance beginning of the period $ (95,852 ) $ (2,870 ) $ (859 ) $ (99,581 ) Other comprehensive (loss) before reclassification (19,613 ) — — (19,613 ) Amounts reclassified from AOCI 56 163 300 519 Total other comprehensive (loss) income (19,557 ) 163 300 (19,094 ) Balance at end of period $ (115,409 ) $ (2,707 ) $ (559 ) $ (118,675 ) Location in consolidated income statements where reclassification from accumulated other comprehensive loss is included Net loss on sale of securities Interest income on securities Other non-interest expense Net unrealized holding (loss) gain on available for sale securities Net unrealized holding (loss) gain on securities transferred to held to maturity Net unrealized holding gain (loss) on retirement plans Total For the nine months ended September 30, 2019 Balance beginning of the period $ (75,077 ) $ (2,546 ) $ 11,678 $ (65,945 ) Other comprehensive gain before reclassification 121,992 — — 121,992 Securities reclassified from held to maturity to available for sale (8,548 ) — — (8,548 ) Amounts reclassified from AOCI 4,943 1,923 (9,231 ) (2,365 ) Total other comprehensive income 118,387 1,923 (9,231 ) 111,079 Balance at end of period $ 43,310 $ (623 ) $ 2,447 $ 45,134 For the nine months ended September 30, 2018 Balance beginning of the period $ (22,324 ) $ (2,678 ) $ (1,164 ) $ (26,166 ) Reclassification of the stranded income tax effects from the enactment of the Tax Cuts and Jobs Act of 2017 from accumulated other comprehensive loss (4,376 ) (525 ) (228 ) (5,129 ) Other comprehensive loss before reclassification (94,611 ) — — (94,611 ) Amounts reclassified from AOCI 5,902 496 833 7,231 Total other comprehensive loss (93,085 ) (29 ) 605 (92,509 ) Balance at end of period $ (115,409 ) $ (2,707 ) $ (559 ) $ (118,675 ) Location in consolidated income statements where reclassification from AOCI is included Net loss on sale of securities Interest income on securities Other non-interest expense

Recently Issued Accounting Stan

Recently Issued Accounting Standards Not Yet Adopted	9 Months Ended
	Sep. 30, 2019
Accounting Changes and Error Corrections [Abstract]
Recently Issued Accounting Standards Not Yet Adopted	Recently Issued Accounting Standards Not Yet Adopted ASU 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). ASU 2016-13 requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts and requires enhanced disclosures related to the significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of our loan portfolio. In addition, ASU 2016-13 amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 will be effective for us on January 1, 2020. We have engaged various third parties to assist us in the development of models that we intend to utilize to calculate current expected credit losses (“CECL”) estimates, model validation and overall CECL implementation preparedness. We have also evaluated and identified key controls and governance procedures that we intend to incorporate into our CECL estimation process. Since the first quarter of 2019, we have prepared preliminary CECL estimates on a parallel path with our current allowance for loan losses methodology. Our CECL estimates are based on our current loan portfolio composition and expectations for future economic conditions, which are subject to change based on a variety of factors. We estimate that had CECL been effective at September 30, 2019, our allowance for credit losses (“ACL”) would have been approximately $55,000 to $75,000 higher than the amount of actual reported allowance for loan losses as of that date. A significant portion of our portfolio loans were acquired in various merger transactions and are not part of our current allowance calculation to the extent they continue to be covered by existing purchase accounting adjustments, which contemplated life of loan loss estimates at acquisition. As part of the adoption of the CECL standard, we are also required to gross up our balance sheet for the credit component of the PCI loan purchase accounting adjustments related to loans acquired in various transactions. As of September 30, 2019, approximately $25,000 to $30,000 of the required ACL referenced above would have been due to PCI loan adjustment. We anticipate that the impact of CECL to our ACL related to our securities portfolio will not be material based on the current composition of our securities portfolio and our expectations for future economic conditions. We are still in the process of evaluating various aspects of the amount of ACL that will be required related to off-balance sheet items. We will continue to prepare parallel calculations of our current allowance for loan losses and our CECL in the fourth quarter of 2019. We expect to finalize our documentation of the accounting policies related to the CECL standard and continue to review and refine the modeling and methodologies in preparation of adopting the standard in the first quarter of 2020. The actual impact of the adoption of CECL will be recorded as a cumulative-effect adjustment to reflect any adjustment to our reserves through retained earnings and will be significantly influenced by the composition, characteristics and quality of our loan and securities portfolios as well as the prevailing economic conditions and forecasts as of the adoption date. In addition, the estimate above does not contemplate potential acquisitions of loan portfolios, such as the equipment finance loan portfolio acquisition we announced in October that is disclosed below in Note 21. “Subsequent Events - Acquisition of Commercial Equipment Finance Loans and Leases.” ASU 2018-13, “Fair Value Measurement (Topic 820) - Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement” (“ASU 2018-13”). ASU 2018-13 modifies the disclosure requirements on fair value measurements in Topic 820. The amendments in this update remove disclosures that no longer are considered cost beneficial, modify/clarify the specific requirements of certain disclosures, and add disclosure requirements identified as relevant. ASU 2018-13 will be effective for us on January 1, 2020, and is not expected to have a significant impact on our financial statements. ASU 2018-14, “Compensation - Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20)” (“ASU 2018-14”). ASU 2018-14 amends and modifies the disclosure requirements for employers that sponsor defined benefit pension or other post-retirement plans. The amendments in this update remove disclosures that are no longer considered cost beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. ASU 2018-14 will be effective for us on January 1, 2021, with early adoption permitted, and is not expected to have a significant impact on our financial statements. ASU 2018-15, “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40) - Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract” (“ASU 2018-15”). ASU 2018-15 clarifies certain aspects of ASU 2015-05, “Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement,” which was issued in April 2015. Specifically, ASU 2018-15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 does not affect the accounting for the service element of a hosting arrangement that is a service contract. ASU 2018-15 will be effective for us on January 1, 2020, and is not expected to have a significant impact on our financial statements. ASU 2019-05, “Financial Instruments - Credit Losses (Topic 326); Targeted Transition Relief” (“ASU 2019-05”). ASU 2019-05 allows us to irrevocably elect, upon adoption of ASU 2016-13, the fair value option on financial instruments that (1) were previously recorded at amortized cost and (2) are within the scope of Topic 326 if the instruments are eligible for the fair value option under authoritative guidance for fair value. The fair value option election does not apply to held-to-maturity debt securities. We are required to make this election on an instrument-by-instrument basis. ASU 2019-05 is effective with CECL on January 1, 2020. We do not expect to elect the fair value option, and therefore, ASU 2019-05 is not expected to impact our financial statements.

Subsequent Event - Acquisition

Subsequent Event - Acquisition of Commercial Equipment Finance Loans and Leases	9 Months Ended
	Sep. 30, 2019
Subsequent Events [Abstract]
Subsequent Event - Acquisition of Commercial Equipment Finance Loans and Leases	Subsequent Event - Acquisition of Commercial Equipment Finance Loans and Leases On October 7, 2019, we announced the Bank entered into a definitive agreement to acquire a portfolio of commercial equipment finance loans and leases portfolio from Santander Bank, N.A. The balance of the portfolio was $843,000 at September 30, 2019 and had a weighted average tax-equivalent yield of approximately 4.3% , duration of approximately 3.5 years and an average relationship size of approximately $5,000 . We anticipate the transaction will close in the fourth quarter of 2019 and that the portfolio will be fully integrated into our established equipment finance platform shortly thereafter.

Basis of Financial Statement _2

Basis of Financial Statement Presentation - (Policies)	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements in this Quarterly Report on Form 10-Q include the accounts of the Company and all other entities in which the Company has a controlling financial interest. All significant intercompany balances and transactions have been eliminated in consolidation. The accounting and financial reporting policies we follow conform, in all material respects, to accounting principles generally accepted in the United States (“GAAP”) and to general practices within the banking industry, which include regulatory reporting instructions. The consolidated financial statements in this Quarterly Report on Form 10-Q have not been audited by an independent registered public accounting firm, but, in the opinion of management, reflect all adjustments necessary for a fair presentation of our financial position and results of operations. All such adjustments were of a normal and recurring nature. The consolidated financial statements have been prepared in accordance with GAAP and with the instructions to Form 10-Q adopted by the Securities and Exchange Commission (the “SEC”). Accordingly, the financial statements do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with our consolidated financial statements, and notes thereto, for the year ended December 31, 2018 , included in our Annual Report on Form 10-K, as filed with the SEC on March 1, 2019 (the “2018 Form 10-K”). Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period. Certain items in prior financial statements have been reclassified to conform to the current presentation. These reclassifications had no impact on previously reported net income.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, income, expense and contingencies at the date of the financial statements. Actual results could differ significantly from these estimates, particularly the allowance for loan losses and the status of contingencies, and are subject to change.
Adoption of New Accounting Standards and Recently Issued Accounting Standards Not Yet Adopted	Adoption of New Accounting Standards We adopted ASU No. 2016-02 “Leases (Topic 842)” , as of January 1, 2019, which requires lessees to recognize most leases on their balance sheets as a right-of-use asset with a corresponding lease liability. The standard included additional required qualitative and quantitative disclosures. We adopted the following practical expedients and elected the following accounting policies related to the leasing standard: • Carry over of historical lease classifications and whether existing contracts contain leases; • Current lease classification for existing leases; • Short-term lease accounting policy, allowing us not to recognize right-of-use assets and liabilities for leases with a term of 12 months or less; and • Lease and non-lease components are not separated for certain leases. As of September 30, 2019, the adoption of this standard resulted in the recognition of right-of-use assets of $113,985 and a lease liability of $120,700 , included in other assets and other liabilities, respectively, in the consolidated balance sheets. The standard did not have a significant impact on operating results or cash flows. See Note 9. “Leases” for additional information. We adopted ASU 2017-12, “Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities,” (“ASU 2017-12”) , as of January 1, 2019, which amended the hedge accounting recognition and presentation requirements in ASC 815 to improve the transparency and understandability of information conveyed to financial statement users about an entity’s risk management activities to better align the entity’s financial reporting for hedging relationships with those risk management activities and to reduce the complexity of and simplify the application of hedge accounting. A provision in ASU 2017-12 provides that we may reclassify a debt security from held to maturity to available for sale at the time of adoption if the debt security is eligible to be hedged under the last-of-layer method in accordance ASU 2017-12. Generally, this includes debt securities that are pre-payable, including mortgage-backed securities, and debt securities that are callable by the issuer, which are applicable to many of our state and municipal debt securities. We transferred held to maturity securities with a book value of $720,440 and a fair value of $708,627 at December 31, 2018 to available for sale effective January 1, 2019. See Note 3. “Securities” for additional information. ASU 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). ASU 2016-13 requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts and requires enhanced disclosures related to the significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of our loan portfolio. In addition, ASU 2016-13 amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 will be effective for us on January 1, 2020. We have engaged various third parties to assist us in the development of models that we intend to utilize to calculate current expected credit losses (“CECL”) estimates, model validation and overall CECL implementation preparedness. We have also evaluated and identified key controls and governance procedures that we intend to incorporate into our CECL estimation process. Since the first quarter of 2019, we have prepared preliminary CECL estimates on a parallel path with our current allowance for loan losses methodology. Our CECL estimates are based on our current loan portfolio composition and expectations for future economic conditions, which are subject to change based on a variety of factors. We estimate that had CECL been effective at September 30, 2019, our allowance for credit losses (“ACL”) would have been approximately $55,000 to $75,000 higher than the amount of actual reported allowance for loan losses as of that date. A significant portion of our portfolio loans were acquired in various merger transactions and are not part of our current allowance calculation to the extent they continue to be covered by existing purchase accounting adjustments, which contemplated life of loan loss estimates at acquisition. As part of the adoption of the CECL standard, we are also required to gross up our balance sheet for the credit component of the PCI loan purchase accounting adjustments related to loans acquired in various transactions. As of September 30, 2019, approximately $25,000 to $30,000 of the required ACL referenced above would have been due to PCI loan adjustment. We anticipate that the impact of CECL to our ACL related to our securities portfolio will not be material based on the current composition of our securities portfolio and our expectations for future economic conditions. We are still in the process of evaluating various aspects of the amount of ACL that will be required related to off-balance sheet items. We will continue to prepare parallel calculations of our current allowance for loan losses and our CECL in the fourth quarter of 2019. We expect to finalize our documentation of the accounting policies related to the CECL standard and continue to review and refine the modeling and methodologies in preparation of adopting the standard in the first quarter of 2020. The actual impact of the adoption of CECL will be recorded as a cumulative-effect adjustment to reflect any adjustment to our reserves through retained earnings and will be significantly influenced by the composition, characteristics and quality of our loan and securities portfolios as well as the prevailing economic conditions and forecasts as of the adoption date. In addition, the estimate above does not contemplate potential acquisitions of loan portfolios, such as the equipment finance loan portfolio acquisition we announced in October that is disclosed below in Note 21. “Subsequent Events - Acquisition of Commercial Equipment Finance Loans and Leases.” ASU 2018-13, “Fair Value Measurement (Topic 820) - Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement” (“ASU 2018-13”). ASU 2018-13 modifies the disclosure requirements on fair value measurements in Topic 820. The amendments in this update remove disclosures that no longer are considered cost beneficial, modify/clarify the specific requirements of certain disclosures, and add disclosure requirements identified as relevant. ASU 2018-13 will be effective for us on January 1, 2020, and is not expected to have a significant impact on our financial statements. ASU 2018-14, “Compensation - Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20)” (“ASU 2018-14”). ASU 2018-14 amends and modifies the disclosure requirements for employers that sponsor defined benefit pension or other post-retirement plans. The amendments in this update remove disclosures that are no longer considered cost beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. ASU 2018-14 will be effective for us on January 1, 2021, with early adoption permitted, and is not expected to have a significant impact on our financial statements. ASU 2018-15, “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40) - Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract” (“ASU 2018-15”). ASU 2018-15 clarifies certain aspects of ASU 2015-05, “Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement,” which was issued in April 2015. Specifically, ASU 2018-15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 does not affect the accounting for the service element of a hosting arrangement that is a service contract. ASU 2018-15 will be effective for us on January 1, 2020, and is not expected to have a significant impact on our financial statements. ASU 2019-05, “Financial Instruments - Credit Losses (Topic 326); Targeted Transition Relief” (“ASU 2019-05”). ASU 2019-05 allows us to irrevocably elect, upon adoption of ASU 2016-13, the fair value option on financial instruments that (1) were previously recorded at amortized cost and (2) are within the scope of Topic 326 if the instruments are eligible for the fair value option under authoritative guidance for fair value. The fair value option election does not apply to held-to-maturity debt securities. We are required to make this election on an instrument-by-instrument basis. ASU 2019-05 is effective with CECL on January 1, 2020. We do not expect to elect the fair value option, and therefore, ASU 2019-05 is not expected to impact our financial statements.
Fair Value Measurement, Policy	Mortgage Servicing Rights We utilize the amortization method to account for mortgage servicing rights, which are amortized on a periodic basis, and reported with other assets in the consolidated balance sheets at the lower of amortized cost or fair value. To estimate the fair value of servicing rights, we utilize a third-party that considers the market prices for similar assets and the present value of expected future cash flows associated with the mortgage servicing rights. Mortgage servicing rights are evaluated for impairment based upon the fair value of the rights as compared to the carrying amount. If the carrying amount of an individual tranche exceeds fair value, impairment is recorded on that tranche so that the servicing asset is carried at fair value. Assumptions utilized to calculate fair value include estimates of the cost of servicing, loan default rates, an appropriate discount rate and prepayment speeds. The determination of fair value of servicing rights relies upon Level 3 inputs. Other Real Estate Owned (Assets Taken in Foreclosure of Defaulted Loans) Other real estate owned is initially recorded at fair value less costs to sell when acquired, which establishes a new cost basis. These assets are subsequently accounted for at the lower of cost or fair value, less costs to sell, and are primarily comprised of commercial and residential real estate property. Upon initial recognition, other real estate owned is re-measured and reported at fair value through a charge-off to the allowance for loan losses based on the fair value of the underlying collateral. The fair value is generally determined using appraisals or other indications of value based on recent comparable sales of similar properties or assumptions generally observable in the market place. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between comparable sales and income data available. The fair value is derived using Level 3 inputs. All appraisals are reviewed by officers in our credit department; and appraisals related to commercial properties are also reviewed by an external appraisal review consultant. Loans Held for Sale The estimated fair value of commercial loans originated and intended for sale approximates their carrying value as these loans are variable-rate loans that reprice frequently with no significant change in credit risk since origination. Residential loans held for sale are carried at the lower of cost or fair value, which is evaluated on a pool-level basis. Fair value is determined using quoted prices for similar assets, adjusted for specific attributes of that loan or other observable market data, such as outstanding commitments from third party investors. Impaired Loans When an impaired loan is collateral dependent, we generally charge-off the difference between the recorded investment in the loan and the appraised value less cost to sell. A discount for estimated costs to dispose of the asset and overall marketability is used when estimating the amount of impairment. Level 1 Inputs – Unadjusted quoted prices in active markets for identical assets and liabilities that the reporting entity has the ability to access at the measurement date. Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risk, etc.) or inputs that are derived principally from, or corroborated by, market data by correlation or other means. Level 3 Inputs – Unobservable inputs for determining the fair value of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities. In general, fair value is based on quoted market prices, when available. If quoted market prices in active markets are not available, fair value is based on internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and our creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. Our valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes its valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Furthermore, the reported fair value amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein. A more detailed description of the valuation methodologies used for assets and liabilities measured at fair value is set forth below. Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincide with our monthly and/or quarterly valuation process. Investment Securities Available for Sale The majority of our available for sale investment securities are reported at fair value utilizing Level 2 inputs. For these securities, we obtain fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the securities’ terms and conditions, among other things. We review the prices supplied by the independent pricing service, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. In general, we do not purchase investment securities that have a complicated structure. Our entire portfolio consists of traditional investments, nearly all of which are mortgage pass-through securities, state and municipal general obligation or revenue bonds, U.S. agency bullet and callable securities and corporate bonds. Pricing for such instruments is fairly generic and is easily obtained. From time to time, we validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from third-party sources or derived using internal models. As of September 30, 2019 , management did not believe any of our securities are OTTI; however, management reviews all of our securities on at least a quarterly basis to assess whether impairment, if any, is OTTI. Derivatives Fair Value of Financial Instruments GAAP requires disclosure of fair value information for those financial instruments for which it is practicable to estimate fair value, whether or not such financial instruments are recognized in the consolidated financial statements for interim and annual periods. Quoted market prices are used to estimate fair values when those prices are available, although active markets do not exist for many types of financial instruments. Fair values for these instruments must be estimated by management using techniques such as discounted cash flow analysis and comparison to similar instruments. These estimates are highly subjective and require judgments regarding significant matters, such as the amount and timing of future cash flows and the selection of discount rates that appropriately reflect market and credit risks. Changes in these judgments often have a material effect on the fair value estimates. Since these estimates are made as of a specific point in time, they are susceptible to material near-term changes. Fair values disclosed in

Securities - (Tables)

Securities - (Tables)	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Summary of securities available for sale	A summary of amortized cost and estimated fair value of securities as of December 31, 2018 is presented below: December 31, 2018 Available for Sale Held to Maturity Amortized cost Gross unrealized gains Gross unrealized losses Fair value Amortized cost Gross unrecognized gains Gross unrecognized losses Fair value Residential MBS: Agency-backed $ 2,328,870 $ 2,347 $ (62,366 ) $ 2,268,851 $ 318,590 $ 73 $ (8,605 ) $ 310,058 CMOs/Other MBS 596,868 11 (22,109 ) 574,770 27,780 2 (765 ) 27,017 Total residential MBS 2,925,738 2,358 (84,475 ) 2,843,621 346,370 75 (9,370 ) 337,075 Other securities: Federal agencies 283,825 — (9,852 ) 273,973 59,065 160 (128 ) 59,097 Corporate 537,210 1,162 (10,407 ) 527,965 68,512 431 (392 ) 68,551 State and municipal 227,546 302 (2,844 ) 225,004 2,305,420 2,654 (49,562 ) 2,258,512 Other — — — — 17,250 49 (12 ) 17,287 Total other securities 1,048,581 1,464 (23,103 ) 1,026,942 2,450,247 3,294 (50,094 ) 2,403,447 Total securities $ 3,974,319 $ 3,822 $ (107,578 ) $ 3,870,563 $ 2,796,617 $ 3,369 $ (59,464 ) $ 2,740,522 A summary of amortized cost and estimated fair value of securities as of September 30, 2019 is presented below. The term “MBS” refers to mortgage-backed securities and the term “CMOs” refers to collateralized mortgage obligations. Both of these terms are further defined in Note 18. “Fair Value Measurements”. September 30, 2019 Available for Sale Held to Maturity Amortized cost Gross unrealized gains Gross unrealized losses Fair value Amortized cost Gross unrecognized gains Gross unrecognized losses Fair value Residential MBS: Agency-backed $ 1,581,246 $ 22,923 $ (1,348 ) $ 1,602,821 $ 177,153 $ 1,983 $ (92 ) $ 179,044 CMOs/Other MBS 528,495 8,924 (45 ) 537,374 — — — — Total residential MBS 2,109,741 31,847 (1,393 ) 2,140,195 177,153 1,983 (92 ) 179,044 Other securities: Federal agencies 156,815 6,082 — 162,897 59,374 857 — 60,231 Corporate 292,064 12,880 (171 ) 304,773 19,917 474 — 20,391 State and municipal 442,946 10,959 (351 ) 453,554 1,716,398 73,155 (141 ) 1,789,412 Other — — — — 12,750 158 (99 ) 12,809 Total other securities 891,825 29,921 (522 ) 921,224 1,808,439 74,644 (240 ) 1,882,843 Total securities $ 3,001,566 $ 61,768 $ (1,915 ) $ 3,061,419 $ 1,985,592 $ 76,627 $ (332 ) $ 2,061,887
Summary of securities held-to-maturity	A summary of amortized cost and estimated fair value of securities as of September 30, 2019 is presented below. The term “MBS” refers to mortgage-backed securities and the term “CMOs” refers to collateralized mortgage obligations. Both of these terms are further defined in Note 18. “Fair Value Measurements”. September 30, 2019 Available for Sale Held to Maturity Amortized cost Gross unrealized gains Gross unrealized losses Fair value Amortized cost Gross unrecognized gains Gross unrecognized losses Fair value Residential MBS: Agency-backed $ 1,581,246 $ 22,923 $ (1,348 ) $ 1,602,821 $ 177,153 $ 1,983 $ (92 ) $ 179,044 CMOs/Other MBS 528,495 8,924 (45 ) 537,374 — — — — Total residential MBS 2,109,741 31,847 (1,393 ) 2,140,195 177,153 1,983 (92 ) 179,044 Other securities: Federal agencies 156,815 6,082 — 162,897 59,374 857 — 60,231 Corporate 292,064 12,880 (171 ) 304,773 19,917 474 — 20,391 State and municipal 442,946 10,959 (351 ) 453,554 1,716,398 73,155 (141 ) 1,789,412 Other — — — — 12,750 158 (99 ) 12,809 Total other securities 891,825 29,921 (522 ) 921,224 1,808,439 74,644 (240 ) 1,882,843 Total securities $ 3,001,566 $ 61,768 $ (1,915 ) $ 3,061,419 $ 1,985,592 $ 76,627 $ (332 ) $ 2,061,887 The following table summarizes securities held to maturity with unrecognized losses, segregated by the length of time in a continuous unrecognized loss position for the periods presented below: Continuous unrecognized loss position Less than 12 months 12 months or longer Total Fair value Unrecognized losses Fair value Unrecognized losses Fair value Unrecognized losses Held to maturity September 30, 2019 Residential MBS: Agency-backed $ 36,823 $ (80 ) $ 1,751 $ (12 ) $ 38,574 $ (92 ) Other securities: State and municipal 3,001 (3 ) 8,359 (138 ) 11,360 (141 ) Other 9,901 (99 ) — — 9,901 (99 ) Total other securities 12,902 (102 ) 8,359 (138 ) 21,261 (240 ) Total securities $ 49,725 $ (182 ) $ 10,110 $ (150 ) $ 59,835 $ (332 ) December 31, 2018 Residential MBS: Agency-backed $ 25,003 $ (147 ) $ 273,974 $ (8,458 ) $ 298,977 $ (8,605 ) CMOs/Other MBS 101 (2 ) 25,066 (763 ) 25,167 (765 ) Total residential MBS 25,104 (149 ) 299,040 (9,221 ) 324,144 (9,370 ) Other securities: Federal agencies 29,485 (95 ) 4,908 (33 ) 34,393 (128 ) Corporate 21,859 (137 ) 16,261 (255 ) 38,120 (392 ) State and municipal 118,389 (877 ) 1,897,758 (48,685 ) 2,016,147 (49,562 ) Other 9,488 (12 ) — — 9,488 (12 ) Total other securities 179,221 (1,121 ) 1,918,927 (48,973 ) 2,098,148 (50,094 ) Total securities $ 204,325 $ (1,270 ) $ 2,217,967 $ (58,194 ) $ 2,422,292 $ (59,464 ) A summary of amortized cost and estimated fair value of securities as of December 31, 2018 is presented below: December 31, 2018 Available for Sale Held to Maturity Amortized cost Gross unrealized gains Gross unrealized losses Fair value Amortized cost Gross unrecognized gains Gross unrecognized losses Fair value Residential MBS: Agency-backed $ 2,328,870 $ 2,347 $ (62,366 ) $ 2,268,851 $ 318,590 $ 73 $ (8,605 ) $ 310,058 CMOs/Other MBS 596,868 11 (22,109 ) 574,770 27,780 2 (765 ) 27,017 Total residential MBS 2,925,738 2,358 (84,475 ) 2,843,621 346,370 75 (9,370 ) 337,075 Other securities: Federal agencies 283,825 — (9,852 ) 273,973 59,065 160 (128 ) 59,097 Corporate 537,210 1,162 (10,407 ) 527,965 68,512 431 (392 ) 68,551 State and municipal 227,546 302 (2,844 ) 225,004 2,305,420 2,654 (49,562 ) 2,258,512 Other — — — — 17,250 49 (12 ) 17,287 Total other securities 1,048,581 1,464 (23,103 ) 1,026,942 2,450,247 3,294 (50,094 ) 2,403,447 Total securities $ 3,974,319 $ 3,822 $ (107,578 ) $ 3,870,563 $ 2,796,617 $ 3,369 $ (59,464 ) $ 2,740,522
Schedule of held for sale securities transferred to available-for-sale	A summary of securities classified as held to maturity at December 31, 2018 that were transferred to available for sale effective January 1, 2019 is presented below. Amortized Fair Residential MBS: Agency-backed $ 125,343 $ 121,510 CMOs/Other MBS 27,780 27,017 Total residential MBS 153,123 148,527 Other securities: Corporate 49,001 48,607 State and municipal 518,316 511,493 Total of securities transferred from held to maturity to available for sale $ 720,440 $ 708,627
Summary of amortized cost and fair value of investment securities available for sale by remaining period to contractual maturity	The amortized cost and estimated fair value of securities at September 30, 2019 are presented below by contractual maturity. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Residential MBS are shown separately since they are not due at a single maturity date. September 30, 2019 Available for sale Held to maturity Amortized cost Fair value Amortized cost Fair value Remaining period to contractual maturity: One year or less $ 12,433 $ 12,398 $ 34,943 $ 35,146 One to five years 102,874 105,669 90,004 91,778 Five to ten years 598,960 620,601 281,286 292,768 Greater than ten years 177,558 182,556 1,402,206 1,463,151 Total securities with a stated maturity date 891,825 921,224 1,808,439 1,882,843 Residential MBS 2,109,741 2,140,195 177,153 179,044 Total securities $ 3,001,566 $ 3,061,419 $ 1,985,592 $ 2,061,887
Sale of securities	Sales of securities for the periods indicated below were as follows: For the three months ended For the nine months ended September 30, September 30, 2019 2018 2019 2018 Available for sale: Proceeds from sales $ 647,485 $ — $ 1,386,236 $ 117,810 Gross realized gains (1) 7,815 — 12,170 82 Gross realized losses (1) (933 ) (3 ) (19,000 ) (5,910 ) Income tax expense (benefit) on realized net gains / losses 1,445 (1 ) (1,434 ) (1,224 ) Held to maturity: (2) Proceeds from sale $ — $ — $ — $ 254 Gross realized losses (1) — (53 ) — (74 ) Income tax expense on realized loss — (11 ) — (15 ) (1) Gross realized gains and losses include securities called prior to maturity. (2) In the nine months ended September 30, 2018, the Company sold a security that was held to maturity due to a decline in the credit rating and other evidence of deterioration of the issuer’s creditworthiness.
Securities available for sale with unrealized losses, by length of time in continuous unrealized loss position	The following table summarizes securities available for sale with unrealized losses, segregated by the length of time in a continuous unrealized loss position for the periods presented below: Continuous unrealized loss position Less than 12 months 12 months or longer Total Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses Available for sale September 30, 2019 Residential MBS: Agency-backed $ 211,025 $ (512 ) $ 110,298 $ (836 ) $ 321,323 $ (1,348 ) CMOs/Other MBS — — 5,991 (45 ) 5,991 (45 ) Total residential MBS 211,025 (512 ) 116,289 (881 ) 327,314 (1,393 ) Other securities: Corporate 2,008 (29 ) 15,588 (142 ) 17,596 (171 ) State and municipal 25,073 (296 ) 3,779 (55 ) 28,852 (351 ) Total other securities 27,081 (325 ) 19,367 (197 ) 46,448 (522 ) Total securities $ 238,106 $ (837 ) $ 135,656 $ (1,078 ) $ 373,762 $ (1,915 ) December 31, 2018 Residential MBS: Agency-backed $ 156,787 $ (536 ) $ 1,955,056 $ (61,830 ) $ 2,111,843 $ (62,366 ) CMOs/Other MBS 94 (2 ) 574,053 (22,107 ) 574,147 (22,109 ) Total residential MBS 156,881 (538 ) 2,529,109 (83,937 ) 2,685,990 (84,475 ) Other securities: Federal agencies — — 273,973 (9,852 ) 273,973 (9,852 ) Corporate 230,126 (4,278 ) 119,869 (6,129 ) 349,995 (10,407 ) State and municipal 16,172 (64 ) 175,966 (2,780 ) 192,138 (2,844 ) Total other securities 246,298 (4,342 ) 569,808 (18,761 ) 816,106 (23,103 ) Total securities $ 403,179 $ (4,880 ) $ 3,098,917 $ (102,698 ) $ 3,502,096 $ (107,578 )
Securities pledged for borrowings at FHLB and other institutions, and securities pledged for municipal deposits and other purposes	Securities pledged for borrowings at the FHLB and other institutions, and securities pledged for municipal deposits and other purposes, were as follows for the periods presented below: September 30, December 31, 2019 2018 Available for sale securities pledged for borrowings, at fair value $ 26,544 $ 12,206 Available for sale securities pledged for municipal deposits, at fair value 818,763 817,306 Held to maturity securities pledged for borrowings, at amortized cost 914 34,996 Held to maturity securities pledged for municipal deposits, at amortized cost 1,551,726 1,338,901 Total securities pledged $ 2,397,948 $ 2,203,409

Portfolio Loans - (Tables)

Portfolio Loans - (Tables)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Components of loan portfolio excluding loans held for sale	The composition of our total portfolio loans, which excludes loans held for sale, was the following for the periods presented below: September 30, 2019 December 31, 2018 Originated loans Acquired loans Total Originated loans Acquired loans Total Commercial: Commercial & Industrial (“C&I”): Traditional C&I $ 2,318,325 $ 58,304 $ 2,376,629 $ 2,321,131 $ 75,051 $ 2,396,182 Asset-based lending 870,681 303,658 1,174,339 792,935 — 792,935 Payroll finance 209,210 — 209,210 227,452 — 227,452 Warehouse lending 1,457,232 — 1,457,232 782,646 — 782,646 Factored receivables 277,853 — 277,853 258,383 — 258,383 Equipment financing 893,255 281,459 1,174,714 913,751 301,291 1,215,042 Public sector finance 1,122,592 — 1,122,592 860,746 — 860,746 Total C&I 7,149,148 643,421 7,792,569 6,157,044 376,342 6,533,386 Commercial mortgage: Commercial real estate (“CRE”) 4,806,054 392,353 5,198,407 4,154,956 487,461 4,642,417 Multi-family 1,932,464 2,846,968 4,779,432 1,527,619 3,236,505 4,764,124 Acquisition, development and construction (“ADC”) 433,883 — 433,883 267,754 — 267,754 Total commercial mortgage 7,172,401 3,239,321 10,411,722 5,950,329 3,723,966 9,674,295 Total commercial 14,321,549 3,882,742 18,204,291 12,107,373 4,100,308 16,207,681 Residential mortgage 559,685 1,810,531 2,370,216 621,471 2,083,755 2,705,226 Consumer 133,384 122,272 255,656 153,811 151,812 305,623 Total portfolio loans 15,014,618 5,815,545 20,830,163 12,882,655 6,335,875 19,218,530 Allowance for loan losses (104,735 ) — (104,735 ) (95,677 ) — (95,677 ) Total portfolio loans, net $ 14,909,883 $ 5,815,545 $ 20,725,428 $ 12,786,978 $ 6,335,875 $ 19,122,853
Schedule of amounts and status of loans and TDRs	The following tables set forth the amounts and status of our loans, troubled debt restructurings (“TDRs”) and non-performing loans at September 30, 2019 and December 31, 2018 : Originated loans: September 30, 2019 Current 30-59 60-89 90+ Non- Total Traditional C&I $ 2,281,766 $ 7,460 $ 290 $ 351 $ 28,458 $ 2,318,325 Asset-based lending 851,047 — — — 19,634 870,681 Payroll finance 208,470 — — — 740 209,210 Warehouse lending 1,457,232 — — — — 1,457,232 Factored receivables 277,853 — — — — 277,853 Equipment financing 851,327 10,122 7,495 45 24,266 893,255 Public sector finance 1,122,592 — — — — 1,122,592 CRE 4,765,462 3,399 6,525 — 30,668 4,806,054 Multi-family 1,927,259 — — — 5,205 1,932,464 ADC 432,922 — — — 961 433,883 Residential mortgage 520,303 2,258 387 — 36,737 559,685 Consumer 123,316 883 3 — 9,182 133,384 Total loans $ 14,819,549 $ 24,122 $ 14,700 $ 396 $ 155,851 $ 15,014,618 Total TDRs included above $ 24,635 $ 258 $ — $ — $ 24,061 $ 48,954 Non-performing loans: Loans 90+ days past due and still accruing $ 396 Non-accrual loans 155,851 Total originated non-performing loans $ 156,247 December 31, 2018 Current 30-59 60-89 90+ Non- Total Traditional C&I $ 2,266,947 $ 5,747 $ 6,139 $ — $ 42,298 $ 2,321,131 Asset-based lending 789,654 — — — 3,281 792,935 Payroll finance 226,571 — — — 881 227,452 Warehouse lending 782,646 — — — — 782,646 Factored receivables 258,383 — — — — 258,383 Equipment financing 879,468 20,466 1,587 9 12,221 913,751 Public sector finance 860,746 — — — — 860,746 CRE 4,118,134 8,054 — 799 27,969 4,154,956 Multi-family 1,524,914 1,014 — — 1,691 1,527,619 ADC 267,090 230 — 434 — 267,754 Residential mortgage 592,563 1,934 897 264 25,813 621,471 Consumer 143,510 1,720 1,232 271 7,078 153,811 Total loans $ 12,710,626 $ 39,165 $ 9,855 $ 1,777 $ 121,232 $ 12,882,655 Total TDRs included above $ 34,892 $ 215 $ 181 $ 650 $ 38,947 $ 74,885 Non-performing loans: Loans 90+ days past due and still accruing $ 1,777 Non-accrual loans 121,232 Total originated non-performing loans $ 123,009 Acquired loans: September 30, 2019 Current 30-59 60-89 90+ Non- Total Traditional C&I $ 58,261 $ — $ — $ — $ 43 $ 58,304 Asset-based lending 303,658 — — — — 303,658 Equipment financing 270,424 7,893 743 — 2,399 281,459 CRE 387,560 758 — — 4,035 392,353 Multi-family 2,845,849 313 4 250 552 2,846,968 Residential mortgage 1,771,628 14,481 — 309 24,113 1,810,531 Consumer 117,512 1,742 — — 3,018 122,272 Total loans $ 5,754,892 $ 25,187 $ 747 $ 559 $ 34,160 $ 5,815,545 Total TDRs included above $ — $ — $ — $ — $ — $ — Non-performing loans: Loans 90+ days past due and still accruing $ 559 Non-accrual loans 34,160 Total acquired non-performing loans $ 34,719 December 31, 2018 Current 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 69,690 $ 5,256 $ 105 $ — $ — $ 75,051 Equipment financing 288,447 8,659 3,998 187 — 301,291 CRE 481,583 377 — 458 5,043 487,461 Multi-family 3,233,779 1,736 — — 990 3,236,505 Residential mortgage 2,022,340 18,734 6,513 — 36,168 2,083,755 Consumer 146,042 1,852 951 — 2,967 151,812 Total loans $ 6,241,881 $ 36,614 $ 11,567 $ 645 $ 45,168 $ 6,335,875 Total TDRs included above $ — $ — $ — $ — $ — $ — Non-performing loans: Loans 90+ days past due and still accruing $ 645 Non-accrual loans 45,168 Total acquired non-performing loans $ 45,813
Schedule of additional analysis of non-accrual loans	The following table provides additional analysis of our non-accrual loans at September 30, 2019 and December 31, 2018 : September 30, 2019 December 31, 2018 Recorded investment non-accrual loans Recorded investment PCI non-accrual loans Recorded investment total non-accrual loans Unpaid principal balance non-accrual loans Recorded investment non-accrual loans Recorded investment PCI non-accrual loans Recorded investment total non-accrual loans Unpaid principal balance non-accrual loans Traditional C&I $ 28,458 $ 43 $ 28,501 $ 39,321 $ 41,625 $ 673 $ 42,298 $ 50,651 Asset-based lending 19,634 — 19,634 35,205 3,281 — 3,281 3,859 Payroll finance 740 — 740 740 881 — 881 881 Equipment financing 26,665 — 26,665 31,237 12,221 — 12,221 15,744 CRE 25,731 8,972 34,703 39,287 23,675 9,337 33,012 39,440 Multi-family 3,777 1,980 5,757 6,169 482 2,199 2,681 2,920 ADC 961 — 961 961 — — — — Residential mortgage 34,595 26,255 60,850 71,619 24,339 37,642 61,981 72,706 Consumer 7,928 4,272 12,200 14,177 6,576 3,469 10,045 12,170 Total $ 148,489 $ 41,522 $ 190,011 $ 238,716 $ 113,080 $ 53,320 $ 166,400 $ 198,371
Impaired financing receivables	The following table presents the average recorded investment and interest income recognized related to loans individually evaluated for impairment by segment for the nine months ended September 30, 2019 and September 30, 2018 : For the nine months ended September 30, 2019 September 30, 2018 YTD average recorded investment Interest income recognized Cash-basis interest income recognized YTD average recorded investment Interest income recognized Cash-basis interest income recognized Loans with no related allowance recorded: Traditional C&I $ 32,666 $ 15 $ — $ 35,935 $ 149 $ — Asset-based lending 22,511 — — 10,980 347 — Equipment financing 3,626 92 — 598 — — CRE 26,580 227 — 22,704 360 — Multi-family 2,314 — — 1,726 48 — Residential mortgage 4,593 13 — 1,387 — — Consumer 2,727 — — 4,355 — — Total $ 95,017 $ 347 $ — $ 77,685 $ 904 $ — The following table sets forth loans evaluated for impairment by segment and the allowance evaluated by segment at September 30, 2019 : Loans evaluated by segment Allowance evaluated by segment Individually evaluated for impairment Collectively evaluated for impairment PCI loans (1) Total loans Individually evaluated for impairment Collectively evaluated for impairment Total allowance for loan losses Traditional C&I $ 26,279 $ 2,344,853 $ 5,497 $ 2,376,629 $ — $ 14,466 $ 14,466 Asset-based lending 19,634 1,141,104 13,601 1,174,339 — 13,968 13,968 Payroll finance — 209,210 — 209,210 — 1,937 1,937 Warehouse lending — 1,457,232 — 1,457,232 — 547 547 Factored receivables — 277,853 — 277,853 — 1,016 1,016 Equipment financing 5,171 1,167,476 2,067 1,174,714 — 16,109 16,109 Public sector finance — 1,122,592 — 1,122,592 — 1,539 1,539 CRE 31,614 5,145,183 21,610 5,198,407 — 32,111 32,111 Multi-family 3,363 4,770,446 5,623 4,779,432 — 9,556 9,556 ADC — 433,883 — 433,883 — 4,166 4,166 Residential mortgage 4,625 2,295,539 70,052 2,370,216 — 7,372 7,372 Consumer 2,727 245,976 6,953 255,656 — 1,948 1,948 Total portfolio loans $ 93,413 $ 20,611,347 $ 125,403 $ 20,830,163 $ — $ 104,735 $ 104,735 (1) We acquired loans for which there was, at acquisition, both evidence of deterioration of credit quality since origination and the probability, at acquisition, that all contractually required payments would not be collected. These loans are classified as purchased credit impaired loans (“PCI loans”). The following table sets forth loans evaluated for impairment by segment and the allowance evaluated by segment at December 31, 2018 : Loans evaluated by segment Allowance evaluated by segment Individually evaluated for impairment Collectively evaluated for impairment PCI loans Total loans Individually evaluated for impairment Collectively evaluated for impairment Total allowance for loan losses Traditional C&I $ 48,735 $ 2,338,432 $ 9,015 $ 2,396,182 $ — $ 14,201 $ 14,201 Asset-based lending 3,281 789,654 — 792,935 — 7,979 7,979 Payroll finance — 227,452 — 227,452 — 2,738 2,738 Warehouse lending — 782,646 — 782,646 — 2,800 2,800 Factored receivables — 258,383 — 258,383 — 1,064 1,064 Equipment financing 3,577 1,211,465 — 1,215,042 — 12,450 12,450 Public sector finance — 860,746 — 860,746 — 1,739 1,739 CRE 33,284 4,581,911 27,222 4,642,417 — 32,285 32,285 Multi-family 1,662 4,754,912 7,550 4,764,124 — 8,355 8,355 ADC — 267,754 — 267,754 — 1,769 1,769 Residential mortgage 3,210 2,614,046 87,970 2,705,226 — 7,454 7,454 Consumer 7,249 290,336 8,038 305,623 — 2,843 2,843 Total portfolio loans $ 100,998 $ 18,977,737 $ 139,795 $ 19,218,530 $ — $ 95,677 $ 95,677 The following table presents loans individually evaluated for impairment, excluding PCI loans, by segment of loans at September 30, 2019 and December 31, 2018 : September 30, 2019 December 31, 2018 Unpaid principal balance Recorded investment Unpaid principal balance Recorded investment Loans with no related allowance recorded: Traditional C&I $ 37,000 $ 26,279 $ 64,653 $ 48,735 Asset-based lending 35,205 19,634 3,859 3,281 Equipment financing 5,171 5,171 3,577 3,577 CRE 35,476 31,614 43,119 33,284 Multi-family 3,695 3,363 2,341 1,662 Residential mortgage 5,962 4,625 3,430 3,210 Consumer 2,727 2,727 7,249 7,249 Total $ 125,236 $ 93,413 $ 128,228 $ 100,998 The following table presents the average recorded investment and interest income recognized related to loans individually evaluated for impairment by segment for the three months ended September 30, 2019 and September 30, 2018 : For the three months ended September 30, 2019 September 30, 2018 QTD average recorded investment Interest income recognized Cash-basis interest income recognized QTD average recorded investment Interest income recognized Cash-basis interest income recognized Loans with no related allowance recorded: Traditional C&I $ 26,702 $ 5 $ — $ 36,731 $ 116 $ — Asset-based lending 25,334 — — 14,639 123 — Equipment financing 4,315 23 — 798 — — CRE 27,337 76 — 27,149 294 — Multi-family 2,488 — — 1,768 17 — Residential mortgage 5,218 4 — 1,849 — — Consumer 2,727 — — 4,762 — — Total $ 94,121 $ 108 $ — $ 87,696 $ 550 $ —
Schedule of changes in the balance of accretable yield discount for PCI loans	The following table presents the changes in the balance of the accretable yield discount for PCI loans for the three and nine months ended September 30, 2019 and 2018 : For the three months ended September 30, For the nine months ended September 30, 2019 2018 2019 2018 Balance at beginning of period $ 18,381 $ 21,711 $ 16,932 $ 45,582 Balances acquired in the Woodforest Acquisition — — 2,093 — Accretion of income (2,459 ) (4,027 ) (6,381 ) (10,578 ) Charge-offs (143 ) — (1,082 ) — Reclassification (to) from non-accretable difference 1,024 1,056 5,241 (1,192 ) Other, adjustments — — — (15,072 ) Balance at end of period $ 16,803 $ 18,740 $ 16,803 $ 18,740
Troubled debt restructurings	The following table presents loans by segment modified as TDRs that occurred during the first nine months of 2019 and 2018 : September 30, 2019 September 30, 2018 Recorded investment Recorded investment Number Pre- modification Post- modification Number Pre- modification Post- modification Traditional C&I 1 $ 5,026 $ 5,026 2 $ 11,606 $ 10,477 Asset-based lending — — — 1 12,766 12,766 Equipment financing 6 5,874 5,039 4 3,307 3,307 CRE — — — 1 12,187 12,187 Residential mortgage 3 1,274 1,274 11 1,684 1,367 Consumer — — — 1 4,944 4,944 Total TDRs 10 $ 12,174 $ 11,339 20 $ 46,494 $ 45,048 The following tables set forth the amounts and past due status of our TDRs at September 30, 2019 and December 31, 2018 : September 30, 2019 Current loans 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 475 $ — $ — $ — $ 13,949 $ 14,424 Asset-based lending — — — — 1,026 1,026 Equipment financing 5,615 71 — — 1,872 7,558 CRE 8,514 — — — 5,031 13,545 ADC — — — — 434 434 Residential mortgage 7,546 187 — — 1,416 9,149 Consumer 2,485 — — — 333 2,818 Total $ 24,635 $ 258 $ — $ — $ 24,061 $ 48,954 December 31, 2018 Current loans 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 9,011 $ — $ — $ — $ 25,672 $ 34,683 Asset-based lending — — — — 1,276 1,276 Equipment financing 1,905 — 9 — 2,367 4,281 CRE 11,071 — — — 7,112 18,183 ADC — — — 434 — 434 Residential mortgage 5,688 — 103 — 2,312 8,103 Consumer 7,217 215 69 216 208 7,925 Total $ 34,892 $ 215 $ 181 $ 650 $ 38,947 $ 74,885

Allowance for Loan Losses - (Ta

Allowance for Loan Losses - (Tables)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Allowance for loan losses activity	Activity in the allowance for loan losses for the three and nine months ended September 30, 2019 and 2018 is summarized below: For the three months ended September 30, 2019 Beginning balance Charge-offs Recoveries Net charge-offs Provision / (credit) Ending balance Traditional C&I $ 17,649 $ (123 ) $ 136 $ 13 $ (3,196 ) $ 14,466 Asset-based lending 11,905 (9,577 ) — (9,577 ) 11,640 13,968 Payroll finance 1,391 — 8 8 538 1,937 Warehouse lending 843 — — — (296 ) 547 Factored receivables 1,157 (14 ) 3 (11 ) (130 ) 1,016 Equipment financing 14,284 (2,711 ) 422 (2,289 ) 4,114 16,109 Public sector finance 1,594 — — — (55 ) 1,539 CRE 34,846 (53 ) 187 134 (2,869 ) 32,111 Multi-family 9,360 — 90 90 106 9,556 ADC 2,272 (6 ) — (6 ) 1,900 4,166 Residential mortgage 7,109 (1,984 ) 126 (1,858 ) 2,121 7,372 Consumer 2,254 (241 ) 108 (133 ) (173 ) 1,948 Total allowance for loan losses $ 104,664 $ (14,709 ) $ 1,080 $ (13,629 ) $ 13,700 $ 104,735 Annualized net charge-offs to average loans outstanding: 0.27 % For the three months ended September 30, 2018 Beginning balance Charge-offs Recoveries Net charge-offs Provision / (credit) Ending balance Traditional C&I $ 18,075 $ (3,415 ) $ 235 $ (3,180 ) $ (179 ) $ 14,716 Asset-based lending 5,837 — — — 991 6,828 Payroll finance 1,658 (2 ) 5 3 522 2,183 Warehouse lending 2,787 — — — (102 ) 2,685 Factored receivables 1,321 (18 ) 2 (16 ) 203 1,508 Equipment financing 8,841 (829 ) 85 (744 ) 3,056 11,153 Public sector finance 1,354 — — — 90 1,444 CRE 26,870 (359 ) 612 253 4,345 31,468 Multi-family 7,389 (168 ) 4 (164 ) 457 7,682 ADC 2,172 — — — (296 ) 1,876 Residential mortgage 5,917 (114 ) 5 (109 ) 992 6,800 Consumer 3,805 (458 ) 254 (204 ) (579 ) 3,022 Total allowance for loan losses $ 86,026 $ (5,363 ) $ 1,202 $ (4,161 ) $ 9,500 $ 91,365 Annualized net charge-offs to average loans outstanding: 0.08 % For the nine months ended September 30, 2019 Beginning Charge-offs Recoveries Net Provision/ (credit) Ending balance Traditional C&I $ 14,201 $ (5,716 ) $ 720 $ (4,996 ) $ 5,261 $ 14,466 Asset-based lending 7,979 (13,128 ) — (13,128 ) 19,117 13,968 Payroll finance 2,738 (84 ) 12 (72 ) (729 ) 1,937 Warehouse lending 2,800 — — — (2,253 ) 547 Factored receivables 1,064 (73 ) 128 55 (103 ) 1,016 Equipment financing 12,450 (5,295 ) 632 (4,663 ) 8,322 16,109 Public sector finance 1,739 — — — (200 ) 1,539 CRE 32,285 (308 ) 845 537 (711 ) 32,111 Multi-family 8,355 — 199 199 1,002 9,556 ADC 1,769 (6 ) — (6 ) 2,403 4,166 Residential mortgage 7,454 (3,758 ) 128 (3,630 ) 3,548 7,372 Consumer 2,843 (1,151 ) 513 (638 ) (257 ) 1,948 Total allowance for loan losses $ 95,677 $ (29,519 ) $ 3,177 $ (26,342 ) $ 35,400 $ 104,735 Annualized net charge-offs to average loans outstanding: 0.17 % For the nine months ended September 30, 2018 Beginning Charge-offs Recoveries Net Provision/ (credit) Ending balance Traditional C&I $ 19,072 $ (8,818 ) $ 674 $ (8,144 ) $ 3,788 $ 14,716 Asset-based lending 6,625 — 9 9 194 6,828 Payroll finance 1,565 (316 ) 34 (282 ) 900 2,183 Warehouse lending 3,705 — — — (1,020 ) 2,685 Factored receivables 1,395 (181 ) 7 (174 ) 287 1,508 Equipment financing 4,862 (7,505 ) 347 (7,158 ) 13,449 11,153 Public sector finance 1,797 — — — (353 ) 1,444 CRE 24,945 (4,878 ) 702 (4,176 ) 10,699 31,468 Multi-family 3,261 (168 ) 7 (161 ) 4,582 7,682 ADC 1,680 (721 ) — (721 ) 917 1,876 Residential mortgage 5,819 (697 ) 54 (643 ) 1,624 6,800 Consumer 3,181 (1,074 ) 482 (592 ) 433 3,022 Total allowance for loan losses $ 77,907 $ (24,358 ) $ 2,316 $ (22,042 ) $ 35,500 $ 91,365 Annualized net charge-offs to average loans outstanding: 0.15 %
Financing receivable credit quality indicators	As of September 30, 2019 , the risk category of gross loans by segment was as follows: Special Mention Substandard Originated Acquired Total Originated Acquired Total Traditional C&I $ 15,159 $ 60 $ 15,219 $ 36,409 $ 879 $ 37,288 Asset-based lending 27,931 30,304 58,235 24,922 — 24,922 Payroll finance 201 — 201 16,923 — 16,923 Equipment financing 11,956 7,482 19,438 44,402 — 44,402 CRE 22,760 9,608 32,368 54,219 5,375 59,594 Multi-family 6,421 2,756 9,177 19,181 728 19,909 ADC 1,855 — 1,855 961 — 961 Residential mortgage 387 — 387 37,458 24,205 61,663 Consumer 92 — 92 9,294 3,019 12,313 Total $ 86,762 $ 50,210 $ 136,972 $ 243,769 $ 34,206 $ 277,975 At September 30, 2019 , there were $44,278 of special mention loans and $122,641 of substandard loans that were originally considered acquired loans but were migrated to the originated loans portfolio as they have been designated criticized or classified status or have been placed on non-accrual since the acquisition date. As of December 31, 2018 , the risk category of gross loans by segment was as follows: Special Mention Substandard Originated Acquired Total Originated Acquired Total Traditional C&I $ 12,003 $ 99 $ 12,102 $ 51,903 $ 128 $ 52,031 Asset-based lending 14,033 — 14,033 21,865 — 21,865 Payroll finance 9,682 — 9,682 17,766 — 17,766 Factored receivables — — — 508 — 508 Equipment financing 9,966 — 9,966 21,256 — 21,256 CRE 3,852 10,160 14,012 43,336 8,126 51,462 Multi-family 33,321 10,490 43,811 20,812 3,542 24,354 ADC — — — 434 — 434 Residential mortgage 5,179 2,231 7,410 29,475 36,431 65,906 Consumer 1,919 245 2,164 7,223 3,242 10,465 Total $ 89,955 $ 23,225 $ 113,180 $ 214,578 $ 51,469 $ 266,047

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets - (Tables)	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of goodwill and intangible assets	The balance of goodwill and other intangible assets for the periods presented were as follows: September 30, December 31, 2019 2018 Goodwill $ 1,657,814 $ 1,613,033 Other intangible assets: Core deposits $ 90,507 $ 104,263 Customer lists 4,142 4,740 Non-compete agreements — 42 Trade name 20,500 20,500 Total $ 115,149 $ 129,545
Future amortization expense	The estimated aggregate future amortization expense for intangible assets remaining as of September 30, 2019 was as follows: Amortization expense Remainder of 2019 $ 4,785 2020 16,800 2021 15,104 2022 13,703 2023 12,322 2024 10,448 Thereafter 21,487 Total $ 94,649

Deposits - (Tables)

Deposits - (Tables)	9 Months Ended
	Sep. 30, 2019
Deposits [Abstract]
Summary of major classification of deposits	Deposit balances at September 30, 2019 and December 31, 2018 were as follows: September 30, December 31, 2019 2018 Non-interest bearing demand $ 4,586,632 $ 4,241,923 Interest bearing demand 4,236,267 4,207,392 Savings 2,348,903 2,382,520 Money market 7,493,074 7,905,382 Certificates of deposit 2,914,448 2,476,931 Total deposits $ 21,579,324 $ 21,214,148
List of Company's Brokered deposits	Brokered deposits at September 30, 2019 and December 31, 2018 were as follows: September 30, December 31, 2019 2018 Interest bearing demand $ 22,908 $ 23,742 Money market 1,027,549 1,134,081 Certificates of deposits 227,971 — Total brokered deposits $ 1,278,428 $ 1,157,823

Borrowings - (Tables)

Borrowings - (Tables)	9 Months Ended
	Sep. 30, 2019
Debt Instruments [Abstract]
Schedule of debt	Our borrowings and weighted average interest rates were as follows for the periods presented: September 30, December 31, 2019 2018 Amount Rate Amount Rate By type of borrowing: FHLB borrowings $ 2,800,907 2.16 % $ 4,838,772 2.40 % Repurchase agreements 26,544 1.20 21,338 1.20 Senior Notes 173,652 3.19 181,130 3.19 Subordinated Notes 173,121 5.45 172,943 5.45 Total borrowings $ 3,174,224 2.41 % $ 5,214,183 2.52 % By remaining period to maturity: Less than one year $ 1,900,440 2.31 % $ 3,958,635 2.48 % One to two years 1,075,663 2.10 831,889 2.28 Two to three years 25,000 1.71 250,716 2.04 Greater than five years 173,121 5.45 172,943 5.45 Total borrowings $ 3,174,224 2.41 % $ 5,214,183 2.52 %

Leases - (Tables)

Leases - (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Schedule of Lease Cost	Lease Term and Discount Rate: September 30, 2019 Weighted average remaining lease term (years) 8.21 Weighted average remaining discount rate 3.25 % The components of lease expense were as follows: Three months ended Nine months ended September 30, 2019 September 30, 2019 Operating lease expense $ 4,913 $ 14,695 Sub-lease income (845 ) (2,002 ) Net lease expense $ 4,068 $ 12,693
Schedule of Operating Lease Liability Maturities	Future minimum payments for operating leases with initial or remaining terms of one year or more as of September 30, 2019 were as follows: Remainder of 2019 $ 4,968 2020 19,379 2021 17,823 2022 16,109 2023 14,504 2024 12,703 2025 and thereafter 54,229 Total lease payments 139,715 Interest 19,015 Present value of lease liabilities $ 120,700

Derivatives - (Tables)

Derivatives - (Tables)	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedges, Assets [Abstract]
Summary of derivatives	Summary information as of September 30, 2019 and December 31, 2018 regarding these derivatives is presented below: Notional amount Average maturity (in years) Weighted average fixed rate Weighted average variable rate Fair value September 30, 2019 Included in other assets: Third-party interest rate swap $ 143,241 $ 140 Customer interest rate swap 1,492,859 84,849 Total $ 1,636,100 5.37 4.54 % 1 m Libor + 2.22% $ 84,989 Included in other liabilities: Third-party interest rate swap $ (1,492,859 ) $ (26,023 ) Customer interest rate swap (143,241 ) (122 ) Total $ (1,636,100 ) 5.37 4.54 % 1 m Libor + 2.22% $ (26,145 ) December 31, 2018 Included in other assets: Third-party interest rate swap $ 516,419 $ 1,963 Customer interest rate swap 556,934 16,252 Total $ 1,073,353 5.90 4.65 % 1 m Libor + 2.29% $ 18,215 Included in other liabilities: Third-party interest rate swap $ (556,934 ) $ (4,351 ) Customer interest rate swap (516,419 ) (8,650 ) Total $ (1,073,353 ) 5.90 4.65 % 1 m Libor + 2.29% $ (13,001 )

Income Taxes - (Tables)

Income Taxes - (Tables)	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rate Reconciliation	Actual income tax expense differs from the tax computed based on pre-tax income and the applicable statutory federal tax rate for the following reasons: For the three months ended For the nine months ended September 30, September 30, 2019 2018 2019 2018 Income before income tax expense $ 154,996 $ 146,821 $ 405,364 $ 421,305 Tax at federal statutory rate of 21% 32,549 30,833 85,126 88,474 State and local income taxes, net of federal tax benefit 9,469 7,330 22,347 21,284 Tax exempt interest, net of disallowed interest (5,429 ) (4,970 ) (15,985 ) (14,435 ) BOLI income (2,441 ) (861 ) (4,103 ) (2,406 ) Low income housing tax credits and other benefits (5,431 ) (401 ) (14,592 ) (2,903 ) Low income housing investment amortization expense 4,627 — 12,510 — Equity-based stock compensation benefit — — (106 ) (441 ) FDIC insurance premium limitation 239 466 717 1,483 Other, net (1,034 ) (5,226 ) (894 ) (2,514 ) Actual income tax expense $ 32,549 $ 27,171 $ 85,020 $ 88,542 Effective income tax rate 21.0 % 18.5 % 21.0 % 21.0 %

Stock-Based Compensation - (Tab

Stock-Based Compensation - (Tables)	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Summary of Company's stock option activity	The following table summarizes the activity in our stock-based compensation plan for the nine months ended September 30, 2019 : Non-vested stock awards/stock units outstanding Stock options outstanding Shares available for grant Number of shares Weighted average grant date fair value Number of shares Weighted average exercise price Balance at January 1, 2019 2,318,950 1,333,514 $ 22.12 686,539 $ 11.20 Amended 2015 Omnibus Equity and Incentive Plan 2,545,682 — — — — Granted (1,507,792 ) 1,507,792 19.63 — — Stock awards vested (1) (70,353 ) (553,432 ) 19.21 — — Exercised — — — (215,997 ) 11.09 Forfeited 86,622 (85,122 ) 22.30 (1,500 ) 10.03 Canceled/expired (1,500 ) — — — Balance at September 30, 2019 3,371,609 2,202,752 $ 20.98 469,042 $ 11.25 Exercisable at September 30, 2019 469,042 $ 11.25 (1) The 70,353 shares vested represents performance shares that were granted in February 2016 to certain executives with a three -year measurement period. These shares vested in the first quarter of 2019 at 150.0% of the target amount granted, which resulted in these additional shares being awarded and additional expense of $1,000 which was recorded in the first quarter of 2019.
Schedule of stock-based compensation expense associated with stock options and non-vested stock awards	Stock-based compensation expense associated with stock options and non-vested stock awards and the related income tax benefit are presented below: For the three months ended For the nine months ended September 30, September 30, 2019 2018 2019 2018 Stock options $ — $ 2 $ — $ 5 Non-vested stock awards/performance units 4,565 3,113 14,293 9,299 Total $ 4,565 $ 3,115 $ 14,293 $ 9,304 Income tax benefit 959 654 3,002 1,954 Proceeds from stock option exercises 508 154 2,397 556
Unrecognized stock-based compensation expense	Unrecognized stock-based compensation expense as of September 30, 2019 was as follows: September 30, 2019 Stock options $ — Non-vested stock awards/performance units 32,405 Total $ 32,405

Pension and Other Post-Retire_2

Pension and Other Post-Retirement Benefits - (Tables)	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Schedule of net pension (benefit) expense and post-retirement expense	Total pension and other post-retirement benefits expense is comprised of the following for the periods presented below: For the three months ended September 30, 2019 September 30, 2018 Pension Benefits Other Post Retirement Benefits Pension Benefits Other Post Retirement Benefits Service cost $ — $ 15 $ — $ 20 Interest cost 3,044 265 2,121 254 Expected return on plan assets (4,044 ) — (3,353 ) — Net amortization and deferral — (82 ) — — Net periodic pension and other post-retirement (benefit) expense $ (1,000 ) $ 198 $ (1,232 ) $ 274 For the nine months ended September 30, 2019 September 30, 2018 Pension Benefits Other Post Retirement Benefits Pension Benefits Other Post Retirement Benefits Service cost $ — $ 45 $ — $ 62 Interest cost 8,382 835 6,364 780 Expected return on plan assets (10,303 ) — (10,058 ) — Net amortization and deferral — (247 ) — — Net periodic pension and other post-retirement (benefit) expense $ (1,921 ) $ 633 $ (3,694 ) $ 842

Non-Interest Income and Other_2

Non-Interest Income and Other Non-Interest Expense - (Tables)	9 Months Ended
	Sep. 30, 2019
Other Income and Expenses [Abstract]
Schedule of Other Non-interest Expense	Other non-interest expense items for the three and nine months ended September 30, 2019 and 2018 , respectively, are presented in the following table: For the three months ended For the nine months ended September 30, September 30, 2019 2018 2019 2018 Other non-interest expense: Professional fees $ 4,438 $ 2,866 $ 14,966 $ 9,269 Advertising and promotion 2,514 1,147 4,889 3,962 Telephone 1,511 1,238 5,115 4,500 Operational losses 536 791 3,026 2,945 Insurance & surety bond premium 982 1,299 3,050 2,680 Other 6,620 5,832 22,573 16,324 Total other non-interest expense $ 16,601 $ 13,173 $ 53,619 $ 39,680

Earnings Per Common Share - (Ta

Earnings Per Common Share - (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Computation of basic and diluted earnings per share	The following is a summary of the calculation of earnings per common share (“EPS”): For the three months ended For the nine months ended September 30, September 30, 2019 2018 2019 2018 Net income available to common stockholders $ 120,465 $ 117,657 $ 314,386 $ 326,775 Weighted average common shares outstanding for computation of basic EPS 203,090,365 225,088,511 207,685,051 224,969,121 Common-equivalent shares due to the dilutive effect of stock options and unvested performance share grants (1) 476,217 534,384 423,524 535,342 Weighted average common shares for computation of diluted EPS 203,566,582 225,622,895 208,108,575 225,504,463 EPS (2) : Basic $ 0.59 $ 0.52 $ 1.51 $ 1.45 Diluted 0.59 0.52 1.51 1.45 (1) Represents incremental shares computed using the treasury stock method. (2) Anti-dilutive shares are not included in determining diluted EPS. There were no anti-dilutive shares in the three or nine months ended September 30, 2019 or September 30, 2018 .

Stockholders' Equity - (Tables)

Stockholders' Equity - (Tables)	9 Months Ended
	Sep. 30, 2019
Stockholders' Equity Note [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The following tables present actual and required capital ratios as of September 30, 2019 and December 31, 2018 for us and the Bank under the Basel III Capital Rules. The Basel III Capital Rules became fully phased-in on January 1, 2019. The minimum required capital amounts presented as of September 30, 2019 and December 31, 2018 are based on the fully phased-in provisions of the Basel III Capital Rules. Capital levels required to be considered well-capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. Actual Minimum capital required - Basel III Required to be considered well- capitalized Capital amount Ratio Capital amount Ratio Capital amount Ratio September 30, 2019 Common equity tier 1 to RWA: Sterling National Bank $ 2,817,082 12.73 % $ 1,548,458 7.00 % $ 1,437,854 6.50 % Sterling Bancorp 2,596,901 11.73 1,549,838 7.00 N/A N/A Tier 1 capital to RWA: Sterling National Bank 2,817,082 12.73 % 1,880,270 8.50 % 1,769,666 8.00 % Sterling Bancorp 2,734,699 12.35 1,881,946 8.50 N/A N/A Total capital to RWA: Sterling National Bank 3,095,592 13.99 % 2,322,687 10.50 % 2,212,083 10.00 % Sterling Bancorp 2,987,273 13.49 2,324,757 10.50 N/A N/A Tier 1 leverage ratio: Sterling National Bank 2,817,082 10.08 % 1,117,759 4.00 % 1,397,198 5.00 % Sterling Bancorp 2,734,699 9.78 1,118,770 4.00 N/A N/A Actual Minimum capital required - Basel III phase-in schedule Minimum capital required - Basel III fully phased-in Required to be considered well- capitalized Capital amount Ratio Capital amount Ratio Capital amount Ratio Capital amount Ratio December 31, 2018 Common equity tier 1 to RWA: Sterling National Bank $ 2,915,484 13.55 % $ 1,371,480 6.375 % $ 1,505,939 7.00 % $ 1,398,372 6.50 % Sterling Bancorp 2,649,593 12.31 1,372,457 6.375 1,507,011 7.00 N/A N/A Tier 1 capital to RWA: Sterling National Bank 2,915,484 13.55 % 1,694,181 7.875 % 1,828,640 8.50 % 1,721,073 8.00 % Sterling Bancorp 2,788,016 12.95 1,695,388 7.875 1,829,942 8.50 N/A N/A Total capital to RWA: Sterling National Bank 3,184,758 14.80 % 2,124,450 9.875 % 2,258,908 10.50 % 2,151,341 10.00 % Sterling Bancorp 3,027,124 14.06 2,125,963 9.875 2,260,517 10.50 N/A N/A Tier 1 leverage ratio: Sterling National Bank 2,915,484 9.94 % 1,172,964 4.00 % 1,172,964 4.00 % 1,466,206 5.00 % Sterling Bancorp 2,788,016 9.50 1,173,883 4.00 1,173,883 4.00 N/A N/A

Commitments and Contingencies -

Commitments and Contingencies - (Tables)	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of off-balance-sheet financial instruments	The contractual or notional amounts of these instruments, which reflect the extent of our involvement in particular classes of off-balance sheet financial instruments, are summarized as follows: September 30, December 31, 2019 2018 Loan origination commitments $ 575,798 $ 417,027 Unused lines of credit 1,524,355 1,737,315 Letters of credit 308,689 287,779

Fair Value Measurements - (Tabl

Fair Value Measurements - (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Estimated fair value on a recurring basis	A summary of assets and liabilities at September 30, 2019 and December 31, 2018 , respectively, measured at estimated fair value on a recurring basis, is as follows: September 30, 2019 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets: Investment securities available for sale: Residential MBS (1) : Agency-backed $ 1,602,821 $ — $ 1,602,821 $ — CMOs (2) /Other MBS 537,374 — 537,374 — Total residential MBS 2,140,195 — 2,140,195 — Other securities: Federal agencies 162,897 — 162,897 — Corporate 304,773 — 304,773 — State and municipal 453,554 — 453,554 — Total other securities 921,224 — 921,224 — Total available for sale securities 3,061,419 — 3,061,419 — Swaps 84,989 — 84,989 — Total assets $ 3,146,408 $ — $ 3,146,408 $ — Liabilities: Swaps $ (26,145 ) $ — $ (26,145 ) $ — Total liabilities $ (26,145 ) $ — $ (26,145 ) $ — December 31, 2018 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets: Investment securities available for sale: Residential MBS (1) : Agency-backed $ 2,268,851 $ — $ 2,268,851 $ — CMOs (2) /Other MBS 574,770 — 574,770 — Total residential MBS 2,843,621 — 2,843,621 — Federal agencies 273,973 — 273,973 — Corporate bonds 527,964 — 527,964 — State and municipal 225,004 — 225,004 — Total other securities 1,026,942 — 1,026,942 — Total available for sale securities 3,870,563 — 3,870,563 — Swaps 18,215 — 18,215 — Total assets $ 3,888,778 $ — $ 3,888,778 $ — Liabilities: Swaps $ (13,001 ) $ — $ (13,001 ) $ — Total liabilities $ (13,001 ) $ — $ (13,001 ) $ — (1) Residential MBS are debt securities whose cash flows come from residential mortgage and consumer loans, such as mortgages and HELOCs. A residential MBS is comprised of a pool of mortgage loans created by financial institutions, including governmental agencies. The cash flows from each mortgage loan included in the pool are structured through a special purpose entity into various classes and tranches, which then issues securities backed by those cash flows to investors. (2) CMOs are debt securities that are collateralized by a specific pool of residential mortgage loans, in which the issuer of the CMOs can direct the payments of principal and interest received on the underlying collateral to achieve specific investor cash flow objectives. The Bank generally acquires planned-amortization class securities and CMOs with a sequential pay structure in order to manage the duration and extension risk inherent in these securities.
Impaired loans measured at estimated fair value on nonrecurring basis	A summary of impaired loans by type that resulted in a charge-off at September 30, 2019 and December 31, 2018 , respectively, is set forth below: September 30, 2019 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Traditional C&I $ 14,718 $ — $ — $ 14,718 Asset-based lending 18,609 — — 18,609 CRE 12,665 — — 12,665 Multi-family 1,194 — — 1,194 Residential mortgage 2,951 — — 2,951 Total impaired loans measured at fair value $ 50,137 $ — $ — $ 50,137 December 31, 2018 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Traditional C&I $ 28,780 $ — $ — $ 28,780 CRE 10,725 — — 10,725 Multi-family 1,210 — — 1,210 Residential mortgage 769 — — 769 Total impaired loans measured at fair value $ 41,484 $ — $ — $ 41,484
Carrying amounts and estimated fair value of financial assets and liabilities	The following is a summary of the carrying amounts and estimated fair value of financial assets and liabilities (none of which were held for trading purposes) as of September 30, 2019 : September 30, 2019 Carrying amount Level 1 inputs Level 2 inputs Level 3 inputs Financial assets: Cash and cash equivalents $ 545,603 $ 545,603 $ — $ — Securities available for sale 3,061,419 — 3,061,419 — Securities held to maturity 1,985,592 — 2,061,887 — Loans held for sale 4,627 — 4,627 — Portfolio loans, net 20,725,428 — — 20,867,041 Accrued interest receivable on securities 33,815 — 33,815 — Accrued interest receivable on loans 71,066 — — 71,066 FHLB stock and FRB stock 276,929 — — — Swaps 84,989 — 84,989 — Financial liabilities: Non-maturity deposits (18,664,876 ) (18,664,876 ) — — Certificates of deposit (2,914,448 ) — (2,910,499 ) — FHLB borrowings (2,800,907 ) — (2,802,337 ) — Other borrowings (26,544 ) — (26,544 ) — Senior Notes (173,652 ) — (174,420 ) — Subordinated Notes (173,121 ) — (182,500 ) — Mortgage escrow funds (84,595 ) — (84,595 ) — Accrued interest payable on deposits (5,417 ) — (5,417 ) — Accrued interest payable on borrowings (14,239 ) — (14,239 ) — Swaps (26,145 ) — (26,145 ) — The following is a summary of the carrying amounts and estimated fair value of financial assets and liabilities (none of which were held for trading purposes) as of December 31, 2018 : December 31, 2018 Carrying amount Level 1 inputs Level 2 inputs Level 3 inputs Financial assets: Cash and cash equivalents $ 438,110 $ 438,110 $ — $ — Securities available for sale 3,870,563 — 3,870,563 — Securities held to maturity 2,796,617 — 2,740,522 — Loans held for sale 1,565,979 — 1,565,979 — Portfolio loans, net 19,122,853 — — 19,033,743 Accrued interest receivable on securities 38,722 — 38,722 — Accrued interest receivable on loans 68,389 — — 68,389 FHLB stock and FRB stock 369,690 — — — Swaps 18,215 — 18,215 — Financial liabilities: Non-maturity deposits (18,737,217 ) (18,737,217 ) — — Certificates of deposit (2,476,931 ) — (2,447,534 ) — FHLB borrowings (4,838,772 ) — (4,821,652 ) — Other borrowings (21,338 ) — (21,337 ) — Senior Notes (181,130 ) — (179,786 ) — Subordinated Notes (172,943 ) — (177,481 ) — Mortgage escrow funds (72,891 ) — (64,074 ) — Accrued interest payable on deposits (3,191 ) — (3,191 ) — Accrued interest payable on borrowings (11,823 ) — (11,823 ) — Swaps (13,001 ) — (13,001 ) —

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) - (Tables)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Components of accumulated other comprehensive income (loss) were as follows as of the dates shown below: September 30, December 31, 2019 2018 Net unrealized holding gain (loss) on available for sale securities $ 59,853 $ (103,756 ) Related income tax (expense) benefit (16,543 ) 28,679 Available for sale securities, net of tax 43,310 (75,077 ) Net unrealized holding loss on securities transferred to held to maturity (861 ) (3,518 ) Related income tax benefit 238 972 Securities transferred to held to maturity, net of tax (623 ) (2,546 ) Net unrealized holding gain on retirement plans 3,381 15,900 Related income tax expense (934 ) (4,222 ) Retirement plans, net of tax 2,447 11,678 Accumulated other comprehensive income (loss) $ 45,134 $ (65,945 ) The following table presents the changes in each component of accumulated other comprehensive income loss (“AOCI”) for the three and nine months ended September 30, 2019 and 2018 : Net unrealized holding gain (loss) on available for sale securities Net unrealized holding (loss) gain on securities transferred to held to maturity Net unrealized holding gain (loss) on retirement plans Total For the three months ended September 30, 2019 Balance beginning of the period $ 27,243 $ (709 ) $ 13,812 $ 40,346 Other comprehensive gain before reclassification 21,047 — — 21,047 Amounts reclassified from AOCI (4,980 ) 86 (11,365 ) (16,259 ) Total other comprehensive income 16,067 86 (11,365 ) 4,788 Balance at end of period $ 43,310 $ (623 ) $ 2,447 $ 45,134 For the three months ended September 30, 2018 Balance beginning of the period $ (95,852 ) $ (2,870 ) $ (859 ) $ (99,581 ) Other comprehensive (loss) before reclassification (19,613 ) — — (19,613 ) Amounts reclassified from AOCI 56 163 300 519 Total other comprehensive (loss) income (19,557 ) 163 300 (19,094 ) Balance at end of period $ (115,409 ) $ (2,707 ) $ (559 ) $ (118,675 ) Location in consolidated income statements where reclassification from accumulated other comprehensive loss is included Net loss on sale of securities Interest income on securities Other non-interest expense Net unrealized holding (loss) gain on available for sale securities Net unrealized holding (loss) gain on securities transferred to held to maturity Net unrealized holding gain (loss) on retirement plans Total For the nine months ended September 30, 2019 Balance beginning of the period $ (75,077 ) $ (2,546 ) $ 11,678 $ (65,945 ) Other comprehensive gain before reclassification 121,992 — — 121,992 Securities reclassified from held to maturity to available for sale (8,548 ) — — (8,548 ) Amounts reclassified from AOCI 4,943 1,923 (9,231 ) (2,365 ) Total other comprehensive income 118,387 1,923 (9,231 ) 111,079 Balance at end of period $ 43,310 $ (623 ) $ 2,447 $ 45,134 For the nine months ended September 30, 2018 Balance beginning of the period $ (22,324 ) $ (2,678 ) $ (1,164 ) $ (26,166 ) Reclassification of the stranded income tax effects from the enactment of the Tax Cuts and Jobs Act of 2017 from accumulated other comprehensive loss (4,376 ) (525 ) (228 ) (5,129 ) Other comprehensive loss before reclassification (94,611 ) — — (94,611 ) Amounts reclassified from AOCI 5,902 496 833 7,231 Total other comprehensive loss (93,085 ) (29 ) 605 (92,509 ) Balance at end of period $ (115,409 ) $ (2,707 ) $ (559 ) $ (118,675 ) Location in consolidated income statements where reclassification from AOCI is included Net loss on sale of securities Interest income on securities Other non-interest expense

Basis of Financial Statement _3

Basis of Financial Statement Presentation - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets	$ 113,985
Operating lease liabilities	120,700
Book value of available-for-sale securities transfered from held to maturity	3,001,566		$ 3,974,319
Fair value of available-for-sale securities transfered from held to maturity	3,061,419		3,870,563
Book value of held to maturity securities transfered to available-for-sale	1,985,592		2,796,617
Fair value of held to maturity securities transfered to available-for-sale	$ 2,061,887		2,740,522
ASU 2017-12
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of available-for-sale securities transfered from held to maturity		$ 720,440
Fair value of available-for-sale securities transfered from held to maturity		708,627
Book value of held to maturity securities transfered to available-for-sale		720,440	720,440
Fair value of held to maturity securities transfered to available-for-sale		$ 708,627	$ 708,627

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) - USD ($) $ in Thousands	Feb. 28, 2019	Apr. 02, 2018	Jun. 30, 2018	Sep. 30, 2019
Woodforest National Bank
Business Acquisition [Line Items]
Consideration paid	$ 515,692
Premium paid for loans receivable, percentage of gross loans	3.75%
Unpaid principal balance of loans acquired	$ 18,674
Restructuring and integration costs				$ 3,344
Advantage Funding
Business Acquisition [Line Items]
Consideration paid		$ 502,052
Outstanding loans and leases held by acquiree at acquisition date		$ 457,638
Premium paid for loans receivable, percentage of gross loans		4.50%
Restructuring and integration costs			$ 4,396
Percentage of interest acquired		100.00%
Loan premium		$ 20,300
Estimate of Fair Value Measurement | Woodforest National Bank
Business Acquisition [Line Items]
Outstanding loans and leases held by acquiree at acquisition date	471,878
Estimate of Fair Value Measurement | Advantage Funding
Business Acquisition [Line Items]
Outstanding loans and leases held by acquiree at acquisition date		$ 439,622
Equipment financing | Woodforest National Bank
Business Acquisition [Line Items]
Outstanding loans and leases held by acquiree at acquisition date	166,143
Asset-based lending | Woodforest National Bank
Business Acquisition [Line Items]
Outstanding loans and leases held by acquiree at acquisition date	$ 331,842

Securities - Amortized Cost to

Securities - Amortized Cost to Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Available for Sale
Amortized cost	$ 3,001,566	$ 3,974,319
Gross unrealized gains	61,768	3,822
Gross unrealized losses	(1,915)	(107,578)
Available for sale, at fair value	3,061,419	3,870,563
Held to Maturity
Amortized cost	1,985,592	2,796,617
Gross unrecognized gains	76,627	3,369
Gross unrecognized losses	(332)	(59,464)
Securities held to maturity, fair value	2,061,887	2,740,522
Agency-backed
Available for Sale
Amortized cost	1,581,246	2,328,870
Gross unrealized gains	22,923	2,347
Gross unrealized losses	(1,348)	(62,366)
Available for sale, at fair value	1,602,821	2,268,851
Held to Maturity
Amortized cost	177,153	318,590
Gross unrecognized gains	1,983	73
Gross unrecognized losses	(92)	(8,605)
Securities held to maturity, fair value	179,044	310,058
CMOs/Other MBS
Available for Sale
Amortized cost	528,495	596,868
Gross unrealized gains	8,924	11
Gross unrealized losses	(45)	(22,109)
Available for sale, at fair value	537,374	574,770
Held to Maturity
Amortized cost	0	27,780
Gross unrecognized gains	0	2
Gross unrecognized losses	0	(765)
Securities held to maturity, fair value	0	27,017
Total residential MBS
Available for Sale
Amortized cost	2,109,741	2,925,738
Gross unrealized gains	31,847	2,358
Gross unrealized losses	(1,393)	(84,475)
Available for sale, at fair value	2,140,195	2,843,621
Held to Maturity
Amortized cost	177,153	346,370
Gross unrecognized gains	1,983	75
Gross unrecognized losses	(92)	(9,370)
Securities held to maturity, fair value	179,044	337,075
Federal agencies
Available for Sale
Amortized cost	156,815	283,825
Gross unrealized gains	6,082	0
Gross unrealized losses	0	(9,852)
Available for sale, at fair value	162,897	273,973
Held to Maturity
Amortized cost	59,374	59,065
Gross unrecognized gains	857	160
Gross unrecognized losses	0	(128)
Securities held to maturity, fair value	60,231	59,097
Corporate
Available for Sale
Amortized cost	292,064	537,210
Gross unrealized gains	12,880	1,162
Gross unrealized losses	(171)	(10,407)
Available for sale, at fair value	304,773	527,965
Held to Maturity
Amortized cost	19,917	68,512
Gross unrecognized gains	474	431
Gross unrecognized losses	0	(392)
Securities held to maturity, fair value	20,391	68,551
State and municipal
Available for Sale
Amortized cost	442,946	227,546
Gross unrealized gains	10,959	302
Gross unrealized losses	(351)	(2,844)
Available for sale, at fair value	453,554	225,004
Held to Maturity
Amortized cost	1,716,398	2,305,420
Gross unrecognized gains	73,155	2,654
Gross unrecognized losses	(141)	(49,562)
Securities held to maturity, fair value	1,789,412	2,258,512
Other
Available for Sale
Amortized cost	0	0
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Available for sale, at fair value	0	0
Held to Maturity
Amortized cost	12,750	17,250
Gross unrecognized gains	158	49
Gross unrecognized losses	(99)	(12)
Securities held to maturity, fair value	12,809	17,287
Total other securities
Available for Sale
Amortized cost	891,825	1,048,581
Gross unrealized gains	29,921	1,464
Gross unrealized losses	(522)	(23,103)
Available for sale, at fair value	921,224	1,026,942
Held to Maturity
Amortized cost	1,808,439	2,450,247
Gross unrecognized gains	74,644	3,294
Gross unrecognized losses	(240)	(50,094)
Securities held to maturity, fair value	$ 1,882,843	$ 2,403,447

Securities - Transfered to Avai

Securities - Transfered to Available-For-Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of held to maturity securities transfered to available-for-sale	$ 1,985,592		$ 2,796,617
Fair value of held to maturity securities transfered to available-for-sale	2,061,887		2,740,522
Agency-backed
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of held to maturity securities transfered to available-for-sale	177,153		318,590
Fair value of held to maturity securities transfered to available-for-sale	179,044		310,058
CMOs/Other MBS
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of held to maturity securities transfered to available-for-sale	0		27,780
Fair value of held to maturity securities transfered to available-for-sale	0		27,017
Total residential MBS
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of held to maturity securities transfered to available-for-sale	177,153		346,370
Fair value of held to maturity securities transfered to available-for-sale	179,044		337,075
Corporate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of held to maturity securities transfered to available-for-sale	19,917		68,512
Fair value of held to maturity securities transfered to available-for-sale	20,391		68,551
State and municipal
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of held to maturity securities transfered to available-for-sale	1,716,398		2,305,420
Fair value of held to maturity securities transfered to available-for-sale	$ 1,789,412		2,258,512
ASU 2017-12
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of held to maturity securities transfered to available-for-sale		$ 720,440	720,440
Fair value of held to maturity securities transfered to available-for-sale		708,627	$ 708,627
ASU 2017-12 | Agency-backed
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of held to maturity securities transfered to available-for-sale		125,343
Fair value of held to maturity securities transfered to available-for-sale		121,510
ASU 2017-12 | CMOs/Other MBS
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of held to maturity securities transfered to available-for-sale		27,780
Fair value of held to maturity securities transfered to available-for-sale		27,017
ASU 2017-12 | Total residential MBS
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of held to maturity securities transfered to available-for-sale		153,123
Fair value of held to maturity securities transfered to available-for-sale		148,527
ASU 2017-12 | Corporate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of held to maturity securities transfered to available-for-sale		49,001
Fair value of held to maturity securities transfered to available-for-sale		48,607
ASU 2017-12 | State and municipal
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of held to maturity securities transfered to available-for-sale		518,316
Fair value of held to maturity securities transfered to available-for-sale		$ 511,493

Securities - Future Maturity (D

Securities - Future Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Amortized cost
Available-for-sale, one year or less, amortized cost	$ 12,433
Available-for-sale, one to five years, amortized cost	102,874
Available-for-sale, five to ten years, amortized cost	598,960
Available-for-sale, greater than ten years, amortized cost	177,558
Available-for-sale, with a stated maturity date, amortized cost	891,825
Available-for-sale, without single maturity date, amortized cost	2,109,741
Amortized cost	3,001,566	$ 3,974,319
Fair value
Available-for-sale, one year or less, fair value	12,398
Available-for-sale, one to five years, fair value	105,669
Available-for-sale, five to ten years, fair value	620,601
Available-for-sale, greater than ten years, fair value	182,556
Available-for-sale, with a stated maturity date, fair value	921,224
Available-for-sale, without single maturity date, fair value	2,140,195
Securities available for sale	3,061,419	3,870,563
Amortized cost
Held-to-maturity, one year or less, amortized cost	34,943
Held-to-maturity, one to five years, amortized cost	90,004
Held-to-maturity, five to ten years, amortized cost	281,286
Held-to-maturity, greater than ten years, amortized cost	1,402,206
Held-to-maturity, with a stated maturity date, amortized cost	1,808,439
Held-to-maturity, without single maturity date, amortized cost	177,153
Amortized cost	1,985,592	2,796,617
Fair value
Held-to-maturity, one year or less, fair value	35,146
Held-to-maturity, one to five years, fair value	91,778
Held-to-maturity, five to ten years, fair value	292,768
Held-to-maturity, greater than ten years, fair value	1,463,151
Held-to-maturity, with a stated maturity date, fair value	1,882,843
Held-to-maturity, without single maturity date, fair value	179,044
Held-to-maturity, fair value	$ 2,061,887	$ 2,740,522

Securities - Sale of Securities

Securities - Sale of Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Available for sale:
Proceeds from sales	$ 647,485	$ 0	$ 1,386,236	$ 117,810
Gross realized gains	7,815	0	12,170	82
Gross realized losses	(933)	(3)	(19,000)	(5,910)
Income tax expense (benefit) on realized net gains / losses	1,445	(1)	(1,434)	(1,224)
Held to Maturity
Proceeds from sale	0	0	0	254
Gross realized loss	0	(53)	0	(74)
Income tax expense on realized loss	$ 0	$ (11)	$ 0	$ (15)

Securities - Narrative (Details

Securities - Narrative (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2019USD ($)	Sep. 30, 2019USD ($)security	Jan. 01, 2019USD ($)	Dec. 31, 2018USD ($)
Investments, Debt and Equity Securities [Abstract]
Number of available for sale securities which were in continuous unrealized loss position for less than 12 months | security		142
Number of available for sale securities which were in continuous unrealized loss position for 12 months or more | security		44
Number of held to maturity securities which were in continuous unrealized loss position for less than 12 months | security		10
Number of held to maturity securities which were in continuous unrealized loss position for 12 months or more | security		48
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of available-for-sale securities transfered from held to maturity		$ 3,001,566		$ 3,974,319
Fair value of available-for-sale securities transfered from held to maturity		$ 3,061,419		$ 3,870,563
Securities sold to raise liquidity	$ 751,935
ASU 2017-12
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Book value of available-for-sale securities transfered from held to maturity			$ 720,440
Fair value of available-for-sale securities transfered from held to maturity			$ 708,627

Securities - Available-for-sale

Securities - Available-for-sale Securities with Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Fair value, less than 12 months	$ 238,106	$ 403,179
Unrealized losses, less than 12 months, accumulated loss	(837)	(4,880)
Fair value, 12 months or longer	135,656	3,098,917
Unrealized losses, 12 months or longer	(1,078)	(102,698)
Fair value, total	373,762	3,502,096
Unrealized losses, total	(1,915)	(107,578)
Agency-backed
Debt Securities, Available-for-sale [Line Items]
Fair value, less than 12 months	211,025	156,787
Unrealized losses, less than 12 months, accumulated loss	(512)	(536)
Fair value, 12 months or longer	110,298	1,955,056
Unrealized losses, 12 months or longer	(836)	(61,830)
Fair value, total	321,323	2,111,843
Unrealized losses, total	(1,348)	(62,366)
CMOs/Other MBS
Debt Securities, Available-for-sale [Line Items]
Fair value, less than 12 months	0	94
Unrealized losses, less than 12 months, accumulated loss	0	(2)
Fair value, 12 months or longer	5,991	574,053
Unrealized losses, 12 months or longer	(45)	(22,107)
Fair value, total	5,991	574,147
Unrealized losses, total	(45)	(22,109)
Total residential MBS
Debt Securities, Available-for-sale [Line Items]
Fair value, less than 12 months	211,025	156,881
Unrealized losses, less than 12 months, accumulated loss	(512)	(538)
Fair value, 12 months or longer	116,289	2,529,109
Unrealized losses, 12 months or longer	(881)	(83,937)
Fair value, total	327,314	2,685,990
Unrealized losses, total	(1,393)	(84,475)
Federal agencies
Debt Securities, Available-for-sale [Line Items]
Fair value, less than 12 months		0
Unrealized losses, less than 12 months, accumulated loss		0
Fair value, 12 months or longer		273,973
Unrealized losses, 12 months or longer		(9,852)
Fair value, total		273,973
Unrealized losses, total		(9,852)
Corporate
Debt Securities, Available-for-sale [Line Items]
Fair value, less than 12 months	2,008	230,126
Unrealized losses, less than 12 months, accumulated loss	(29)	(4,278)
Fair value, 12 months or longer	15,588	119,869
Unrealized losses, 12 months or longer	(142)	(6,129)
Fair value, total	17,596	349,995
Unrealized losses, total	(171)	(10,407)
State and municipal
Debt Securities, Available-for-sale [Line Items]
Fair value, less than 12 months	25,073	16,172
Unrealized losses, less than 12 months, accumulated loss	(296)	(64)
Fair value, 12 months or longer	3,779	175,966
Unrealized losses, 12 months or longer	(55)	(2,780)
Fair value, total	28,852	192,138
Unrealized losses, total	(351)	(2,844)
Total other securities
Debt Securities, Available-for-sale [Line Items]
Fair value, less than 12 months	27,081	246,298
Unrealized losses, less than 12 months, accumulated loss	(325)	(4,342)
Fair value, 12 months or longer	19,367	569,808
Unrealized losses, 12 months or longer	(197)	(18,761)
Fair value, total	46,448	816,106
Unrealized losses, total	$ (522)	$ (23,103)

Securities - Held to Maturity S

Securities - Held to Maturity Securities with Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities [Line Items]
Fair value, less than 12 months	$ 49,725	$ 204,325
Unrecognized losses, less than 12 months	(182)	(1,270)
Fair value, 12 months or longer	10,110	2,217,967
Unrecognized losses, 12 months or longer	(150)	(58,194)
Fair value, total	59,835	2,422,292
Unrecognized losses, total	(332)	(59,464)
Agency-backed
Schedule of Held-to-maturity Securities [Line Items]
Fair value, less than 12 months	36,823	25,003
Unrecognized losses, less than 12 months	(80)	(147)
Fair value, 12 months or longer	1,751	273,974
Unrecognized losses, 12 months or longer	(12)	(8,458)
Fair value, total	38,574	298,977
Unrecognized losses, total	(92)	(8,605)
CMOs/Other MBS
Schedule of Held-to-maturity Securities [Line Items]
Fair value, less than 12 months		101
Unrecognized losses, less than 12 months		(2)
Fair value, 12 months or longer		25,066
Unrecognized losses, 12 months or longer		(763)
Fair value, total		25,167
Unrecognized losses, total		(765)
Total residential MBS
Schedule of Held-to-maturity Securities [Line Items]
Fair value, less than 12 months		25,104
Unrecognized losses, less than 12 months		(149)
Fair value, 12 months or longer		299,040
Unrecognized losses, 12 months or longer		(9,221)
Fair value, total		324,144
Unrecognized losses, total		(9,370)
Federal agencies
Schedule of Held-to-maturity Securities [Line Items]
Fair value, less than 12 months		29,485
Unrecognized losses, less than 12 months		(95)
Fair value, 12 months or longer		4,908
Unrecognized losses, 12 months or longer		(33)
Fair value, total		34,393
Unrecognized losses, total		(128)
Corporate
Schedule of Held-to-maturity Securities [Line Items]
Fair value, less than 12 months		21,859
Unrecognized losses, less than 12 months		(137)
Fair value, 12 months or longer		16,261
Unrecognized losses, 12 months or longer		(255)
Fair value, total		38,120
Unrecognized losses, total		(392)
State and municipal
Schedule of Held-to-maturity Securities [Line Items]
Fair value, less than 12 months	3,001	118,389
Unrecognized losses, less than 12 months	(3)	(877)
Fair value, 12 months or longer	8,359	1,897,758
Unrecognized losses, 12 months or longer	(138)	(48,685)
Fair value, total	11,360	2,016,147
Unrecognized losses, total	(141)	(49,562)
Other
Schedule of Held-to-maturity Securities [Line Items]
Fair value, less than 12 months	9,901	9,488
Unrecognized losses, less than 12 months	(99)	(12)
Fair value, 12 months or longer	0	0
Unrecognized losses, 12 months or longer	0	0
Fair value, total	9,901	9,488
Unrecognized losses, total	(99)	(12)
Total other securities
Schedule of Held-to-maturity Securities [Line Items]
Fair value, less than 12 months	12,902	179,221
Unrecognized losses, less than 12 months	(102)	(1,121)
Fair value, 12 months or longer	8,359	1,918,927
Unrecognized losses, 12 months or longer	(138)	(48,973)
Fair value, total	21,261	2,098,148
Unrecognized losses, total	$ (240)	$ (50,094)

Securities - Securities Pledged

Securities - Securities Pledged for Borrowings (Details) - Collateral Pledged - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total securities pledged	$ 2,397,948	$ 2,203,409
Federal Home Loan Bank Borrowings
Financial Instruments Owned and Pledged as Collateral [Line Items]
Available-for-sale, pledged as collateral	26,544	12,206
Held-to-maturity securities pledged as collateral	914	34,996
Municipal Deposits
Financial Instruments Owned and Pledged as Collateral [Line Items]
Available-for-sale, pledged as collateral	818,763	817,306
Held-to-maturity securities pledged as collateral	$ 1,551,726	$ 1,338,901

Portfolio Loans - Composition o

Portfolio Loans - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	$ 20,830,163		$ 19,218,530
Allowance for loan losses	(104,735)	$ (104,664)	(95,677)	$ (91,365)	$ (86,026)	$ (77,907)
Portfolio loans, net	20,725,428		19,122,853
Traditional C&I
Components of loan portfolio, excluding loans held for sale
Allowance for loan losses	(14,466)	(17,649)	(14,201)	(14,716)	(18,075)	(19,072)
Asset-based lending
Components of loan portfolio, excluding loans held for sale
Allowance for loan losses	(13,968)	(11,905)	(7,979)	(6,828)	(5,837)	(6,625)
Payroll finance
Components of loan portfolio, excluding loans held for sale
Allowance for loan losses	(1,937)	(1,391)	(2,738)	(2,183)	(1,658)	(1,565)
Warehouse lending
Components of loan portfolio, excluding loans held for sale
Allowance for loan losses	(547)	(843)	(2,800)	(2,685)	(2,787)	(3,705)
Factored receivables
Components of loan portfolio, excluding loans held for sale
Allowance for loan losses	(1,016)	(1,157)	(1,064)	(1,508)	(1,321)	(1,395)
Equipment financing
Components of loan portfolio, excluding loans held for sale
Allowance for loan losses	(16,109)	(14,284)	(12,450)	(11,153)	(8,841)	(4,862)
Public sector finance
Components of loan portfolio, excluding loans held for sale
Allowance for loan losses	(1,539)	(1,594)	(1,739)	(1,444)	(1,354)	(1,797)
ADC
Components of loan portfolio, excluding loans held for sale
Allowance for loan losses	(4,166)	(2,272)	(1,769)	(1,876)	(2,172)	(1,680)
Residential mortgage
Components of loan portfolio, excluding loans held for sale
Allowance for loan losses	(7,372)	(7,109)	(7,454)	(6,800)	(5,917)	(5,819)
Consumer
Components of loan portfolio, excluding loans held for sale
Allowance for loan losses	(1,948)	$ (2,254)	(2,843)	$ (3,022)	$ (3,805)	$ (3,181)
Commercial loans portfolio segment
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	18,204,291		16,207,681
Commercial loans portfolio segment | Commercial and industrial
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	7,792,569		6,533,386
Commercial loans portfolio segment | Commercial and industrial | Traditional C&I
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	2,376,629		2,396,182
Commercial loans portfolio segment | Commercial and industrial | Asset-based lending
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	1,174,339		792,935
Commercial loans portfolio segment | Commercial and industrial | Payroll finance
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	209,210		227,452
Commercial loans portfolio segment | Commercial and industrial | Warehouse lending
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	1,457,232		782,646
Commercial loans portfolio segment | Commercial and industrial | Factored receivables
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	277,853		258,383
Commercial loans portfolio segment | Commercial and industrial | Equipment financing
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	1,174,714		1,215,042
Commercial loans portfolio segment | Commercial and industrial | Public sector finance
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	1,122,592		860,746
Commercial loans portfolio segment | Real estate
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	10,411,722		9,674,295
Commercial loans portfolio segment | Real estate | CRE
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	5,198,407		4,642,417
Commercial loans portfolio segment | Real estate | Multi-family | Multi-family
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	4,779,432		4,764,124
Commercial loans portfolio segment | Real estate | ADC
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	433,883		267,754
Residential mortgage portfolio segment | Residential mortgage
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	2,370,216		2,705,226
Consumer portfolio segment | Consumer
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	255,656		305,623
Originated Loan
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	15,014,618		12,882,655
Allowance for loan losses	(104,735)		(95,677)
Portfolio loans, net	14,909,883		12,786,978
Originated Loan | Commercial loans portfolio segment
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	14,321,549		12,107,373
Originated Loan | Commercial loans portfolio segment | Commercial and industrial
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	7,149,148		6,157,044
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Traditional C&I
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	2,318,325		2,321,131
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Asset-based lending
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	870,681		792,935
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Payroll finance
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	209,210		227,452
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Warehouse lending
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	1,457,232		782,646
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Factored receivables
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	277,853		258,383
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Equipment financing
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	893,255		913,751
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Public sector finance
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	1,122,592		860,746
Originated Loan | Commercial loans portfolio segment | Real estate
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	7,172,401		5,950,329
Originated Loan | Commercial loans portfolio segment | Real estate | CRE
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	4,806,054		4,154,956
Originated Loan | Commercial loans portfolio segment | Real estate | Multi-family | Multi-family
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	1,932,464		1,527,619
Originated Loan | Commercial loans portfolio segment | Real estate | ADC
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	433,883		267,754
Originated Loan | Residential mortgage portfolio segment | Residential mortgage
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	559,685		621,471
Originated Loan | Consumer portfolio segment | Consumer
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	133,384		153,811
Acquired Loan
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	5,815,545		6,335,875
Allowance for loan losses	0		0
Portfolio loans, net	5,815,545		6,335,875
Acquired Loan | Commercial loans portfolio segment
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	3,882,742		4,100,308
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	643,421		376,342
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Traditional C&I
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	58,304		75,051
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Asset-based lending
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	303,658		0
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Payroll finance
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	0		0
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Warehouse lending
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	0		0
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Factored receivables
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	0		0
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Equipment financing
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	281,459		301,291
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Public sector finance
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	0		0
Acquired Loan | Commercial loans portfolio segment | Real estate
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	3,239,321		3,723,966
Acquired Loan | Commercial loans portfolio segment | Real estate | CRE
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	392,353		487,461
Acquired Loan | Commercial loans portfolio segment | Real estate | Multi-family | Multi-family
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	2,846,968		3,236,505
Acquired Loan | Commercial loans portfolio segment | Real estate | ADC
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	0		0
Acquired Loan | Residential mortgage portfolio segment | Residential mortgage
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	1,810,531		2,083,755
Acquired Loan | Consumer portfolio segment | Consumer
Components of loan portfolio, excluding loans held for sale
Total portfolio loans	$ 122,272		$ 151,812

Portfolio Loans - Narrative (De

Portfolio Loans - Narrative (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)loan	Sep. 30, 2018USD ($)loan	Dec. 31, 2018USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Net deferred loan origination costs	$ 9,133,000		$ 9,133,000		$ 5,581,000
Discounts on acquired loans			73,985,000		117,222,000
Bank pledged mortgages	7,729,593,000		7,729,593,000		8,526,247,000
Non accrual loans	190,011,000		190,011,000		166,400,000
Maximum loan balance for credit risk to be evaluated on a homogeneous basis	750,000		750,000
Loans not individually evaluated for impairment	93,413,000		93,413,000		100,998,000
Impaired loans with an allowance recorded, recorded investment	0		0		0
Impairment reserve	0		0		0
Recorded investment with no related allowance recorded	93,413,000		93,413,000		100,998,000
Impaired loans with no related allowance recorded, cash-basis interest income recognized	0	$ 0	$ 0	$ 0
Loans modified by TDR | loan			10	20
TDRs modified and subsequently defaulted | loan				0
PCI Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	41,522,000		$ 41,522,000		53,320,000
Balance of PCI loans treated under cost recovery method	3,284,000		3,284,000		5,202,000
Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans formally in process of foreclosure	40,754,000		40,754,000		48,107,000
Commercial loans portfolio segment | Commercial and industrial | Asset-based lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	19,634,000		19,634,000		3,281,000
Loans not individually evaluated for impairment	19,634,000		19,634,000		3,281,000
Impairment reserve	0		0		0
Recorded investment with no related allowance recorded	19,634,000		19,634,000		3,281,000
Impaired loans with no related allowance recorded, cash-basis interest income recognized	0	0	$ 0	$ 0
Loans modified by TDR | loan			0	1
Commercial loans portfolio segment | Commercial and industrial | Asset-based lending | PCI Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	0		$ 0		0
Commercial loans portfolio segment | Commercial and industrial | Warehouse lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans not individually evaluated for impairment	0		0		0
Impairment reserve	0		0		0
Commercial loans portfolio segment | Commercial and industrial | Public sector finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans not individually evaluated for impairment	0		0		0
Impairment reserve	0		0		0
Commercial loans portfolio segment | Commercial and industrial | Payroll finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	740,000		740,000		881,000
Loans not individually evaluated for impairment	0		0		0
Impairment reserve	0		0		0
Commercial loans portfolio segment | Commercial and industrial | Payroll finance | PCI Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	0		0		0
Commercial loans portfolio segment | Commercial and industrial | Factored receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans not individually evaluated for impairment	0		0		0
Impairment reserve	0		0		0
Commercial loans portfolio segment | Commercial and industrial | Equipment financing
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	26,665,000		26,665,000		12,221,000
Loans not individually evaluated for impairment	5,171,000		5,171,000		3,577,000
Impairment reserve	0		0		0
Recorded investment with no related allowance recorded	5,171,000		5,171,000		3,577,000
Impaired loans with no related allowance recorded, cash-basis interest income recognized	0	0	$ 0	$ 0
Loans modified by TDR | loan			6	4
TDRs modified and subsequently defaulted | loan			1
Commercial loans portfolio segment | Commercial and industrial | Equipment financing | PCI Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	0		$ 0		0
Commercial loans portfolio segment | Real estate | ADC
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	961,000		961,000		0
Loans not individually evaluated for impairment	0		0		0
Impairment reserve	0		0		0
Commercial loans portfolio segment | Real estate | ADC | PCI Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	0		0		0
Commercial loans portfolio segment | Real estate | CRE
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	34,703,000		34,703,000		33,012,000
Loans not individually evaluated for impairment	31,614,000		31,614,000		33,284,000
Impairment reserve	0		0		0
Recorded investment with no related allowance recorded	31,614,000		31,614,000		33,284,000
Impaired loans with no related allowance recorded, cash-basis interest income recognized	0	0	$ 0	$ 0
Loans modified by TDR | loan			0	1
Commercial loans portfolio segment | Real estate | CRE | PCI Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	8,972,000		$ 8,972,000		9,337,000
Consumer portfolio segment | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	12,200,000		12,200,000		10,045,000
Loans not individually evaluated for impairment	2,727,000		2,727,000		7,249,000
Impairment reserve	0		0		0
Recorded investment with no related allowance recorded	2,727,000		2,727,000		7,249,000
Impaired loans with no related allowance recorded, cash-basis interest income recognized	0	0	$ 0	$ 0
Loans modified by TDR | loan			0	1
Consumer portfolio segment | Consumer | PCI Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	4,272,000		$ 4,272,000		3,469,000
Multi-family | Commercial loans portfolio segment | Real estate | Multi-family
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	5,757,000		5,757,000		2,681,000
Loans not individually evaluated for impairment	3,363,000		3,363,000		1,662,000
Impairment reserve	0		0		0
Recorded investment with no related allowance recorded	3,363,000		3,363,000		1,662,000
Impaired loans with no related allowance recorded, cash-basis interest income recognized	0	$ 0	0	$ 0
Multi-family | Commercial loans portfolio segment | Real estate | Multi-family | PCI Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	1,980,000		1,980,000		2,199,000
Originated Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans acquired transferred to originated	1,064,724,000		1,064,724,000		1,365,682,000
Loans acquired transferred to originated, allowance			8,465,000		9,607,000
Non accrual loans	155,851,000		155,851,000		121,232,000
Loans not classified as TDRs	48,954,000		48,954,000		74,885,000
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Asset-based lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	19,634,000		19,634,000		3,281,000
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Warehouse lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	0		0		0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Public sector finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	0		0		0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Payroll finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	740,000		740,000		881,000
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Factored receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	0		0		0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Equipment financing
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	24,266,000		24,266,000		12,221,000
Originated Loan | Commercial loans portfolio segment | Real estate | ADC
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	961,000		961,000		0
Originated Loan | Commercial loans portfolio segment | Real estate | CRE
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	30,668,000		30,668,000		27,969,000
Originated Loan | Consumer portfolio segment | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	9,182,000		9,182,000		7,078,000
Originated Loan | Multi-family | Commercial loans portfolio segment | Real estate | Multi-family
Financing Receivable, Allowance for Credit Loss [Line Items]
Non accrual loans	$ 5,205,000		$ 5,205,000		$ 1,691,000

Portfolio Loans - Status of Loa

Portfolio Loans - Status of Loans and TDRs (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Non-Performing loans:
Non accrual loans	$ 190,011	$ 166,400
Total portfolio loans	20,830,163	19,218,530
Commercial loans portfolio segment
Non-Performing loans:
Total portfolio loans	18,204,291	16,207,681
Commercial loans portfolio segment | Commercial and industrial
Non-Performing loans:
Total portfolio loans	7,792,569	6,533,386
Commercial loans portfolio segment | Commercial and industrial | Traditional C&I
Non-Performing loans:
Non accrual loans	28,501	42,298
Total portfolio loans	2,376,629	2,396,182
Commercial loans portfolio segment | Commercial and industrial | Asset-based lending
Non-Performing loans:
Non accrual loans	19,634	3,281
Total portfolio loans	1,174,339	792,935
Commercial loans portfolio segment | Commercial and industrial | Payroll finance
Non-Performing loans:
Non accrual loans	740	881
Total portfolio loans	209,210	227,452
Commercial loans portfolio segment | Commercial and industrial | Warehouse lending
Non-Performing loans:
Total portfolio loans	1,457,232	782,646
Commercial loans portfolio segment | Commercial and industrial | Factored receivables
Non-Performing loans:
Total portfolio loans	277,853	258,383
Commercial loans portfolio segment | Commercial and industrial | Equipment financing
Non-Performing loans:
Non accrual loans	26,665	12,221
Total portfolio loans	1,174,714	1,215,042
Commercial loans portfolio segment | Commercial and industrial | Public sector finance
Non-Performing loans:
Total portfolio loans	1,122,592	860,746
Commercial loans portfolio segment | Real estate
Non-Performing loans:
Total portfolio loans	10,411,722	9,674,295
Commercial loans portfolio segment | Real estate | CRE
Non-Performing loans:
Non accrual loans	34,703	33,012
Total portfolio loans	5,198,407	4,642,417
Commercial loans portfolio segment | Real estate | Multi-family | Multi-family
Non-Performing loans:
Non accrual loans	5,757	2,681
Total portfolio loans	4,779,432	4,764,124
Commercial loans portfolio segment | Real estate | ADC
Non-Performing loans:
Non accrual loans	961	0
Total portfolio loans	433,883	267,754
Residential mortgage portfolio segment | Residential mortgage
Non-Performing loans:
Non accrual loans	60,850	61,981
Total portfolio loans	2,370,216	2,705,226
Consumer portfolio segment | Consumer
Non-Performing loans:
Non accrual loans	12,200	10,045
Total portfolio loans	255,656	305,623
Originated Loan
Non-Performing loans:
Current loans	14,819,549	12,710,626
Non accrual loans	155,851	121,232
Total portfolio loans	15,014,618	12,882,655
Current loans	24,635	34,892
Past due TDRs	48,954	74,885
Non-Accrual TDRs	24,061	38,947
Originated Loan | Nonperforming loans
Non-Performing loans:
Non accrual loans	155,851	121,232
Non-performing loans:
Loans 90 days past due and still accruing	396	1,777
Total non-performing loans	156,247	123,009
Originated Loan | 30-59 days past due
Non-Performing loans:
Past due loans	24,122	39,165
Past due TDRs	258	215
Originated Loan | 60-89 days past due
Non-Performing loans:
Past due loans	14,700	9,855
Past due TDRs	0	181
Originated Loan | 90 days past due
Non-Performing loans:
Past due loans	396	1,777
Past due TDRs	0	650
Originated Loan | Commercial loans portfolio segment
Non-Performing loans:
Total portfolio loans	14,321,549	12,107,373
Originated Loan | Commercial loans portfolio segment | Commercial and industrial
Non-Performing loans:
Total portfolio loans	7,149,148	6,157,044
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Traditional C&I
Non-Performing loans:
Current loans	2,281,766	2,266,947
Non accrual loans	28,458	42,298
Total portfolio loans	2,318,325	2,321,131
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Traditional C&I | 30-59 days past due
Non-Performing loans:
Past due loans	7,460	5,747
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Traditional C&I | 60-89 days past due
Non-Performing loans:
Past due loans	290	6,139
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Traditional C&I | 90 days past due
Non-Performing loans:
Past due loans	351	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Asset-based lending
Non-Performing loans:
Current loans	851,047	789,654
Non accrual loans	19,634	3,281
Total portfolio loans	870,681	792,935
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Asset-based lending | 30-59 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Asset-based lending | 60-89 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Asset-based lending | 90 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Payroll finance
Non-Performing loans:
Current loans	208,470	226,571
Non accrual loans	740	881
Total portfolio loans	209,210	227,452
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Payroll finance | 30-59 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Payroll finance | 60-89 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Payroll finance | 90 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Warehouse lending
Non-Performing loans:
Current loans	1,457,232	782,646
Non accrual loans	0	0
Total portfolio loans	1,457,232	782,646
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Warehouse lending | 30-59 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Warehouse lending | 60-89 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Warehouse lending | 90 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Factored receivables
Non-Performing loans:
Current loans	277,853	258,383
Non accrual loans	0	0
Total portfolio loans	277,853	258,383
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Factored receivables | 30-59 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Factored receivables | 60-89 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Factored receivables | 90 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Equipment financing
Non-Performing loans:
Current loans	851,327	879,468
Non accrual loans	24,266	12,221
Total portfolio loans	893,255	913,751
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Equipment financing | 30-59 days past due
Non-Performing loans:
Past due loans	10,122	20,466
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Equipment financing | 60-89 days past due
Non-Performing loans:
Past due loans	7,495	1,587
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Equipment financing | 90 days past due
Non-Performing loans:
Past due loans	45	9
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Public sector finance
Non-Performing loans:
Current loans	1,122,592	860,746
Non accrual loans	0	0
Total portfolio loans	1,122,592	860,746
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Public sector finance | 30-59 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Public sector finance | 60-89 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Commercial and industrial | Public sector finance | 90 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Real estate
Non-Performing loans:
Total portfolio loans	7,172,401	5,950,329
Originated Loan | Commercial loans portfolio segment | Real estate | CRE
Non-Performing loans:
Current loans	4,765,462	4,118,134
Non accrual loans	30,668	27,969
Total portfolio loans	4,806,054	4,154,956
Originated Loan | Commercial loans portfolio segment | Real estate | CRE | 30-59 days past due
Non-Performing loans:
Past due loans	3,399	8,054
Originated Loan | Commercial loans portfolio segment | Real estate | CRE | 60-89 days past due
Non-Performing loans:
Past due loans	6,525	0
Originated Loan | Commercial loans portfolio segment | Real estate | CRE | 90 days past due
Non-Performing loans:
Past due loans	0	799
Originated Loan | Commercial loans portfolio segment | Real estate | Multi-family | Multi-family
Non-Performing loans:
Current loans	1,927,259	1,524,914
Non accrual loans	5,205	1,691
Total portfolio loans	1,932,464	1,527,619
Originated Loan | Commercial loans portfolio segment | Real estate | Multi-family | Multi-family | 30-59 days past due
Non-Performing loans:
Past due loans	0	1,014
Originated Loan | Commercial loans portfolio segment | Real estate | Multi-family | Multi-family | 60-89 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Real estate | Multi-family | Multi-family | 90 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Real estate | ADC
Non-Performing loans:
Current loans	432,922	267,090
Non accrual loans	961	0
Total portfolio loans	433,883	267,754
Originated Loan | Commercial loans portfolio segment | Real estate | ADC | 30-59 days past due
Non-Performing loans:
Past due loans	0	230
Originated Loan | Commercial loans portfolio segment | Real estate | ADC | 60-89 days past due
Non-Performing loans:
Past due loans	0	0
Originated Loan | Commercial loans portfolio segment | Real estate | ADC | 90 days past due
Non-Performing loans:
Past due loans	0	434
Originated Loan | Residential mortgage portfolio segment | Residential mortgage
Non-Performing loans:
Current loans	520,303	592,563
Non accrual loans	36,737	25,813
Total portfolio loans	559,685	621,471
Originated Loan | Residential mortgage portfolio segment | Residential mortgage | 30-59 days past due
Non-Performing loans:
Past due loans	2,258	1,934
Originated Loan | Residential mortgage portfolio segment | Residential mortgage | 60-89 days past due
Non-Performing loans:
Past due loans	387	897
Originated Loan | Residential mortgage portfolio segment | Residential mortgage | 90 days past due
Non-Performing loans:
Past due loans	0	264
Originated Loan | Consumer portfolio segment | Consumer
Non-Performing loans:
Current loans	123,316	143,510
Non accrual loans	9,182	7,078
Total portfolio loans	133,384	153,811
Originated Loan | Consumer portfolio segment | Consumer | 30-59 days past due
Non-Performing loans:
Past due loans	883	1,720
Originated Loan | Consumer portfolio segment | Consumer | 60-89 days past due
Non-Performing loans:
Past due loans	3	1,232
Originated Loan | Consumer portfolio segment | Consumer | 90 days past due
Non-Performing loans:
Past due loans	0	271
Acquired Loan
Non-Performing loans:
Current loans	5,754,892	6,241,881
Non accrual loans	34,160	45,168
Total portfolio loans	5,815,545	6,335,875
Current loans	0	0
Past due TDRs	0	0
Non-Accrual TDRs	0	0
Acquired Loan | Nonperforming loans
Non-Performing loans:
Non accrual loans	34,160	45,168
Non-performing loans:
Loans 90 days past due and still accruing	559	645
Total non-performing loans	34,719	45,813
Acquired Loan | 30-59 days past due
Non-Performing loans:
Past due loans	25,187	36,614
Past due TDRs	0	0
Acquired Loan | 60-89 days past due
Non-Performing loans:
Past due loans	747	11,567
Past due TDRs	0	0
Acquired Loan | 90 days past due
Non-Performing loans:
Past due loans	559	645
Past due TDRs	0	0
Acquired Loan | Commercial loans portfolio segment
Non-Performing loans:
Total portfolio loans	3,882,742	4,100,308
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial
Non-Performing loans:
Total portfolio loans	643,421	376,342
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Traditional C&I
Non-Performing loans:
Current loans	58,261	69,690
Non accrual loans	43	0
Total portfolio loans	58,304	75,051
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Traditional C&I | 30-59 days past due
Non-Performing loans:
Past due loans	0	5,256
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Traditional C&I | 60-89 days past due
Non-Performing loans:
Past due loans	0	105
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Traditional C&I | 90 days past due
Non-Performing loans:
Past due loans	0	0
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Asset-based lending
Non-Performing loans:
Current loans	303,658
Non accrual loans	0
Total portfolio loans	303,658	0
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Asset-based lending | 30-59 days past due
Non-Performing loans:
Past due loans	0
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Asset-based lending | 60-89 days past due
Non-Performing loans:
Past due loans	0
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Asset-based lending | 90 days past due
Non-Performing loans:
Past due loans	0
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Payroll finance
Non-Performing loans:
Total portfolio loans	0	0
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Warehouse lending
Non-Performing loans:
Total portfolio loans	0	0
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Factored receivables
Non-Performing loans:
Total portfolio loans	0	0
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Equipment financing
Non-Performing loans:
Current loans	270,424	288,447
Non accrual loans	2,399	0
Total portfolio loans	281,459	301,291
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Equipment financing | 30-59 days past due
Non-Performing loans:
Past due loans	7,893	8,659
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Equipment financing | 60-89 days past due
Non-Performing loans:
Past due loans	743	3,998
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Equipment financing | 90 days past due
Non-Performing loans:
Past due loans	0	187
Acquired Loan | Commercial loans portfolio segment | Commercial and industrial | Public sector finance
Non-Performing loans:
Total portfolio loans	0	0
Acquired Loan | Commercial loans portfolio segment | Real estate
Non-Performing loans:
Total portfolio loans	3,239,321	3,723,966
Acquired Loan | Commercial loans portfolio segment | Real estate | CRE
Non-Performing loans:
Current loans	387,560	481,583
Non accrual loans	4,035	5,043
Total portfolio loans	392,353	487,461
Acquired Loan | Commercial loans portfolio segment | Real estate | CRE | 30-59 days past due
Non-Performing loans:
Past due loans	758	377
Acquired Loan | Commercial loans portfolio segment | Real estate | CRE | 60-89 days past due
Non-Performing loans:
Past due loans	0	0
Acquired Loan | Commercial loans portfolio segment | Real estate | CRE | 90 days past due
Non-Performing loans:
Past due loans	0	458
Acquired Loan | Commercial loans portfolio segment | Real estate | Multi-family | Multi-family
Non-Performing loans:
Current loans	2,845,849	3,233,779
Non accrual loans	552	990
Total portfolio loans	2,846,968	3,236,505
Acquired Loan | Commercial loans portfolio segment | Real estate | Multi-family | Multi-family | 30-59 days past due
Non-Performing loans:
Past due loans	313	1,736
Acquired Loan | Commercial loans portfolio segment | Real estate | Multi-family | Multi-family | 60-89 days past due
Non-Performing loans:
Past due loans	4	0
Acquired Loan | Commercial loans portfolio segment | Real estate | Multi-family | Multi-family | 90 days past due
Non-Performing loans:
Past due loans	250	0
Acquired Loan | Commercial loans portfolio segment | Real estate | ADC
Non-Performing loans:
Total portfolio loans	0	0
Acquired Loan | Residential mortgage portfolio segment | Residential mortgage
Non-Performing loans:
Current loans	1,771,628	2,022,340
Non accrual loans	24,113	36,168
Total portfolio loans	1,810,531	2,083,755
Acquired Loan | Residential mortgage portfolio segment | Residential mortgage | 30-59 days past due
Non-Performing loans:
Past due loans	14,481	18,734
Acquired Loan | Residential mortgage portfolio segment | Residential mortgage | 60-89 days past due
Non-Performing loans:
Past due loans	0	6,513
Acquired Loan | Residential mortgage portfolio segment | Residential mortgage | 90 days past due
Non-Performing loans:
Past due loans	309	0
Acquired Loan | Consumer portfolio segment | Consumer
Non-Performing loans:
Current loans	117,512	146,042
Non accrual loans	3,018	2,967
Total portfolio loans	122,272	151,812
Acquired Loan | Consumer portfolio segment | Consumer | 30-59 days past due
Non-Performing loans:
Past due loans	1,742	1,852
Acquired Loan | Consumer portfolio segment | Consumer | 60-89 days past due
Non-Performing loans:
Past due loans	0	951
Acquired Loan | Consumer portfolio segment | Consumer | 90 days past due
Non-Performing loans:
Past due loans	$ 0	$ 0

Portfolio Loans - Nonaccrual Lo

Portfolio Loans - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	$ 190,011	$ 166,400
Non-accrual loans, unpaid principal balance	238,716	198,371
Commercial loans portfolio segment | Traditional C&I | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	28,501	42,298
Non-accrual loans, unpaid principal balance	39,321	50,651
Commercial loans portfolio segment | Asset-based lending | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	19,634	3,281
Non-accrual loans, unpaid principal balance	35,205	3,859
Commercial loans portfolio segment | Payroll finance | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	740	881
Non-accrual loans, unpaid principal balance	740	881
Commercial loans portfolio segment | Equipment financing | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	26,665	12,221
Non-accrual loans, unpaid principal balance	31,237	15,744
Commercial loans portfolio segment | CRE | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	34,703	33,012
Non-accrual loans, unpaid principal balance	39,287	39,440
Commercial loans portfolio segment | Multi-family | Multi-family | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	5,757	2,681
Non-accrual loans, unpaid principal balance	6,169	2,920
Commercial loans portfolio segment | ADC | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	961	0
Non-accrual loans, unpaid principal balance	961	0
Residential mortgage portfolio segment | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	60,850	61,981
Non-accrual loans, unpaid principal balance	71,619	72,706
Consumer portfolio segment | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	12,200	10,045
Non-accrual loans, unpaid principal balance	14,177	12,170
Receivables without deteriorated credit quality
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	148,489	113,080
Receivables without deteriorated credit quality | Commercial loans portfolio segment | Traditional C&I | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	28,458	41,625
Receivables without deteriorated credit quality | Commercial loans portfolio segment | Asset-based lending | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	19,634	3,281
Receivables without deteriorated credit quality | Commercial loans portfolio segment | Payroll finance | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	740	881
Receivables without deteriorated credit quality | Commercial loans portfolio segment | Equipment financing | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	26,665	12,221
Receivables without deteriorated credit quality | Commercial loans portfolio segment | CRE | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	25,731	23,675
Receivables without deteriorated credit quality | Commercial loans portfolio segment | Multi-family | Multi-family | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	3,777	482
Receivables without deteriorated credit quality | Commercial loans portfolio segment | ADC | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	961	0
Receivables without deteriorated credit quality | Residential mortgage portfolio segment | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	34,595	24,339
Receivables without deteriorated credit quality | Consumer portfolio segment | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	7,928	6,576
Receivables acquired with deteriorated credit quality
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	41,522	53,320
Receivables acquired with deteriorated credit quality | Commercial loans portfolio segment | Traditional C&I | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	43	673
Receivables acquired with deteriorated credit quality | Commercial loans portfolio segment | Asset-based lending | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	0	0
Receivables acquired with deteriorated credit quality | Commercial loans portfolio segment | Payroll finance | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	0	0
Receivables acquired with deteriorated credit quality | Commercial loans portfolio segment | Equipment financing | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	0	0
Receivables acquired with deteriorated credit quality | Commercial loans portfolio segment | CRE | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	8,972	9,337
Receivables acquired with deteriorated credit quality | Commercial loans portfolio segment | Multi-family | Multi-family | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	1,980	2,199
Receivables acquired with deteriorated credit quality | Commercial loans portfolio segment | ADC | Real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	0	0
Receivables acquired with deteriorated credit quality | Residential mortgage portfolio segment | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	26,255	37,642
Receivables acquired with deteriorated credit quality | Consumer portfolio segment | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	$ 4,272	$ 3,469

Portfolio Loans - Loans Evaluat

Portfolio Loans - Loans Evaluated for Impairment (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	$ 93,413	$ 100,998
Loans evaluated by segment, Collectively evaluated for impairment	20,611,347	18,977,737
Total portfolio loans	20,830,163	19,218,530
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	104,735	95,677
Total allowance for loan losses	104,735	95,677
PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	125,403	139,795
Commercial loans portfolio segment
Loans evaluated for impairment by segment
Total portfolio loans	18,204,291	16,207,681
Commercial loans portfolio segment | Commercial and industrial
Loans evaluated for impairment by segment
Total portfolio loans	7,792,569	6,533,386
Commercial loans portfolio segment | Commercial and industrial | Traditional C&I
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	26,279	48,735
Loans evaluated by segment, Collectively evaluated for impairment	2,344,853	2,338,432
Total portfolio loans	2,376,629	2,396,182
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	14,466	14,201
Total allowance for loan losses	14,466	14,201
Commercial loans portfolio segment | Commercial and industrial | Traditional C&I | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	5,497	9,015
Commercial loans portfolio segment | Commercial and industrial | Asset-based lending
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	19,634	3,281
Loans evaluated by segment, Collectively evaluated for impairment	1,141,104	789,654
Total portfolio loans	1,174,339	792,935
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	13,968	7,979
Total allowance for loan losses	13,968	7,979
Commercial loans portfolio segment | Commercial and industrial | Asset-based lending | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	13,601	0
Commercial loans portfolio segment | Commercial and industrial | Payroll finance
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	0	0
Loans evaluated by segment, Collectively evaluated for impairment	209,210	227,452
Total portfolio loans	209,210	227,452
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	1,937	2,738
Total allowance for loan losses	1,937	2,738
Commercial loans portfolio segment | Commercial and industrial | Payroll finance | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	0	0
Commercial loans portfolio segment | Commercial and industrial | Warehouse lending
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	0	0
Loans evaluated by segment, Collectively evaluated for impairment	1,457,232	782,646
Total portfolio loans	1,457,232	782,646
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	547	2,800
Total allowance for loan losses	547	2,800
Commercial loans portfolio segment | Commercial and industrial | Warehouse lending | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	0	0
Commercial loans portfolio segment | Commercial and industrial | Factored receivables
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	0	0
Loans evaluated by segment, Collectively evaluated for impairment	277,853	258,383
Total portfolio loans	277,853	258,383
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	1,016	1,064
Total allowance for loan losses	1,016	1,064
Commercial loans portfolio segment | Commercial and industrial | Factored receivables | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	0	0
Commercial loans portfolio segment | Commercial and industrial | Equipment financing
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	5,171	3,577
Loans evaluated by segment, Collectively evaluated for impairment	1,167,476	1,211,465
Total portfolio loans	1,174,714	1,215,042
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	16,109	12,450
Total allowance for loan losses	16,109	12,450
Commercial loans portfolio segment | Commercial and industrial | Equipment financing | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	2,067	0
Commercial loans portfolio segment | Commercial and industrial | Public sector finance
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	0	0
Loans evaluated by segment, Collectively evaluated for impairment	1,122,592	860,746
Total portfolio loans	1,122,592	860,746
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	1,539	1,739
Total allowance for loan losses	1,539	1,739
Commercial loans portfolio segment | Commercial and industrial | Public sector finance | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	0	0
Commercial loans portfolio segment | Real estate
Loans evaluated for impairment by segment
Total portfolio loans	10,411,722	9,674,295
Commercial loans portfolio segment | Real estate | CRE
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	31,614	33,284
Loans evaluated by segment, Collectively evaluated for impairment	5,145,183	4,581,911
Total portfolio loans	5,198,407	4,642,417
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	32,111	32,285
Total allowance for loan losses	32,111	32,285
Commercial loans portfolio segment | Real estate | CRE | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	21,610	27,222
Commercial loans portfolio segment | Real estate | Multi-family | Multi-family
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	3,363	1,662
Loans evaluated by segment, Collectively evaluated for impairment	4,770,446	4,754,912
Total portfolio loans	4,779,432	4,764,124
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	9,556	8,355
Total allowance for loan losses	9,556	8,355
Commercial loans portfolio segment | Real estate | Multi-family | Multi-family | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	5,623	7,550
Commercial loans portfolio segment | Real estate | ADC
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	0	0
Loans evaluated by segment, Collectively evaluated for impairment	433,883	267,754
Total portfolio loans	433,883	267,754
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	4,166	1,769
Total allowance for loan losses	4,166	1,769
Commercial loans portfolio segment | Real estate | ADC | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	0	0
Residential mortgage portfolio segment | Residential mortgage
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	4,625	3,210
Loans evaluated by segment, Collectively evaluated for impairment	2,295,539	2,614,046
Total portfolio loans	2,370,216	2,705,226
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	7,372	7,454
Total allowance for loan losses	7,372	7,454
Residential mortgage portfolio segment | Residential mortgage | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	70,052	87,970
Consumer portfolio segment | Consumer
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	2,727	7,249
Loans evaluated by segment, Collectively evaluated for impairment	245,976	290,336
Total portfolio loans	255,656	305,623
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	1,948	2,843
Total allowance for loan losses	1,948	2,843
Consumer portfolio segment | Consumer | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	$ 6,953	$ 8,038

Portfolio Loans - Accretable Yi

Portfolio Loans - Accretable Yield Discount for PCI Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 18,381	$ 21,711	$ 16,932	$ 45,582
Balances acquired in the Woodforest Acquisition	0	0	2,093	0
Accretion of income	(2,459)	(4,027)	(6,381)	(10,578)
Charge-offs	(143)	0	(1,082)	0
Reclassification (to) from non-accretable difference	1,024	1,056	5,241	(1,192)
Other, adjustments	0	0	0	(15,072)
Balance at end of period	$ 16,803	$ 18,740	$ 16,803	$ 18,740

Portfolio Loans - Loans Individ

Portfolio Loans - Loans Individually Evaluated for Impairment (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	$ 125,236	$ 128,228
Recorded investment with no related allowance recorded	93,413	100,998
Residential mortgage portfolio segment | Residential mortgage
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	5,962	3,430
Recorded investment with no related allowance recorded	4,625	3,210
Consumer portfolio segment | Consumer
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	2,727	7,249
Recorded investment with no related allowance recorded	2,727	7,249
Commercial and industrial | Commercial loans portfolio segment | Traditional C&I
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	37,000	64,653
Recorded investment with no related allowance recorded	26,279	48,735
Commercial and industrial | Commercial loans portfolio segment | Asset-based lending
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	35,205	3,859
Recorded investment with no related allowance recorded	19,634	3,281
Commercial and industrial | Commercial loans portfolio segment | Equipment financing
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	5,171	3,577
Recorded investment with no related allowance recorded	5,171	3,577
Real estate | Commercial loans portfolio segment | CRE
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	35,476	43,119
Recorded investment with no related allowance recorded	31,614	33,284
Real estate | Commercial loans portfolio segment | Multi-family | Multi-family
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	3,695	2,341
Recorded investment with no related allowance recorded	$ 3,363	$ 1,662

Portfolio Loans - Average Recor

Portfolio Loans - Average Recorded Investment and Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	$ 94,121	$ 87,696	$ 95,017	$ 77,685
Interest income recognized with no related allowance	108	550	347	904
Cash-basis interest income recognized with no related allowance	0	0	0	0
Commercial loans portfolio segment | Commercial and industrial | Traditional C&I
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	26,702	36,731	32,666	35,935
Interest income recognized with no related allowance	5	116	15	149
Cash-basis interest income recognized with no related allowance	0	0	0	0
Commercial loans portfolio segment | Commercial and industrial | Asset-based lending
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	25,334	14,639	22,511	10,980
Interest income recognized with no related allowance	0	123	0	347
Cash-basis interest income recognized with no related allowance	0	0	0	0
Commercial loans portfolio segment | Commercial and industrial | Equipment financing
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	4,315	798	3,626	598
Interest income recognized with no related allowance	23	0	92	0
Cash-basis interest income recognized with no related allowance	0	0	0	0
Commercial loans portfolio segment | Real estate | CRE
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	27,337	27,149	26,580	22,704
Interest income recognized with no related allowance	76	294	227	360
Cash-basis interest income recognized with no related allowance	0	0	0	0
Commercial loans portfolio segment | Real estate | Multi-family | Multi-family
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	2,488	1,768	2,314	1,726
Interest income recognized with no related allowance	0	17	0	48
Cash-basis interest income recognized with no related allowance	0	0	0	0
Residential mortgage portfolio segment | Residential mortgage
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	5,218	1,849	4,593	1,387
Interest income recognized with no related allowance	4	0	13	0
Cash-basis interest income recognized with no related allowance	0	0	0	0
Consumer portfolio segment | Consumer
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	2,727	4,762	2,727	4,355
Interest income recognized with no related allowance	0	0	0	0
Cash-basis interest income recognized with no related allowance	$ 0	$ 0	$ 0	$ 0

Portfolio Loans - Past Due Stat

Portfolio Loans - Past Due Status (Details) - Financial Asset, Other than Financial Asset Acquired with Credit Deterioration - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Troubled Debt Restructuring [Line Items]
Current loans	$ 24,635	$ 34,892
Past due TDRs	48,954	74,885
Non- accrual	24,061	38,947
30-59 days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	258	215
60-89 days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	181
90 days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	650
Commercial loans portfolio segment | Commercial and industrial | Traditional C&I
Financing Receivable, Troubled Debt Restructuring [Line Items]
Current loans	475	9,011
Past due TDRs	14,424	34,683
Non- accrual	13,949	25,672
Commercial loans portfolio segment | Commercial and industrial | Asset-based lending
Financing Receivable, Troubled Debt Restructuring [Line Items]
Current loans	0	0
Past due TDRs	1,026	1,276
Non- accrual	1,026	1,276
Commercial loans portfolio segment | Commercial and industrial | Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Current loans	5,615	1,905
Past due TDRs	7,558	4,281
Non- accrual	1,872	2,367
Commercial loans portfolio segment | Commercial and industrial | 30-59 days past due | Traditional C&I
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Commercial loans portfolio segment | Commercial and industrial | 30-59 days past due | Asset-based lending
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Commercial loans portfolio segment | Commercial and industrial | 30-59 days past due | Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	71	0
Commercial loans portfolio segment | Commercial and industrial | 60-89 days past due | Traditional C&I
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Commercial loans portfolio segment | Commercial and industrial | 60-89 days past due | Asset-based lending
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Commercial loans portfolio segment | Commercial and industrial | 60-89 days past due | Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	9
Commercial loans portfolio segment | Commercial and industrial | 90 days past due | Traditional C&I
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Commercial loans portfolio segment | Commercial and industrial | 90 days past due | Asset-based lending
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Commercial loans portfolio segment | Commercial and industrial | 90 days past due | Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Commercial loans portfolio segment | Real estate | CRE
Financing Receivable, Troubled Debt Restructuring [Line Items]
Current loans	8,514	11,071
Past due TDRs	13,545	18,183
Non- accrual	5,031	7,112
Commercial loans portfolio segment | Real estate | ADC
Financing Receivable, Troubled Debt Restructuring [Line Items]
Current loans	0	0
Past due TDRs	434	434
Non- accrual	434	0
Commercial loans portfolio segment | Real estate | 30-59 days past due | CRE
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Commercial loans portfolio segment | Real estate | 30-59 days past due | ADC
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Commercial loans portfolio segment | Real estate | 60-89 days past due | CRE
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Commercial loans portfolio segment | Real estate | 60-89 days past due | ADC
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Commercial loans portfolio segment | Real estate | 90 days past due | CRE
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Commercial loans portfolio segment | Real estate | 90 days past due | ADC
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	434
Residential mortgage portfolio segment | Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Current loans	7,546	5,688
Past due TDRs	9,149	8,103
Non- accrual	1,416	2,312
Residential mortgage portfolio segment | 30-59 days past due | Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	187	0
Residential mortgage portfolio segment | 60-89 days past due | Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	103
Residential mortgage portfolio segment | 90 days past due | Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	0
Consumer portfolio segment | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Current loans	2,485	7,217
Past due TDRs	2,818	7,925
Non- accrual	333	208
Consumer portfolio segment | 30-59 days past due | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	215
Consumer portfolio segment | 60-89 days past due | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	0	69
Consumer portfolio segment | 90 days past due | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Past due TDRs	$ 0	$ 216

Portfolio Loans - Loans Modifie

Portfolio Loans - Loans Modified as TDRs (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)loan	Sep. 30, 2018USD ($)loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number | loan	10	20
Recorded investment, Pre-modification	$ 12,174	$ 46,494
Recorded investment, Post-modification	$ 11,339	$ 45,048
Commercial loans portfolio segment | Commercial and industrial | Traditional C&I
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number | loan	1	2
Recorded investment, Pre-modification	$ 5,026	$ 11,606
Recorded investment, Post-modification	$ 5,026	$ 10,477
Commercial loans portfolio segment | Commercial and industrial | Asset-based lending
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number | loan	0	1
Recorded investment, Pre-modification	$ 0	$ 12,766
Recorded investment, Post-modification	$ 0	$ 12,766
Commercial loans portfolio segment | Commercial and industrial | Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number | loan	6	4
Recorded investment, Pre-modification	$ 5,874	$ 3,307
Recorded investment, Post-modification	$ 5,039	$ 3,307
Commercial loans portfolio segment | Real estate | CRE
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number | loan	0	1
Recorded investment, Pre-modification	$ 0	$ 12,187
Recorded investment, Post-modification	$ 0	$ 12,187
Residential mortgage portfolio segment | Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number | loan	3	11
Recorded investment, Pre-modification	$ 1,274	$ 1,684
Recorded investment, Post-modification	$ 1,274	$ 1,367
Consumer portfolio segment | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number | loan	0	1
Recorded investment, Pre-modification	$ 0	$ 4,944
Recorded investment, Post-modification	$ 0	$ 4,944

Allowance for Loan Losses - All

Allowance for Loan Losses - Allowance Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	$ 104,664	$ 86,026	$ 95,677	$ 77,907
Charge-offs	(14,709)	(5,363)	(29,519)	(24,358)
Recoveries	1,080	1,202	3,177	2,316
Net charge-offs	(13,629)	(4,161)	(26,342)	(22,042)
Provision / (credit)	13,700	9,500	35,400	35,500
Ending allowance for Loan Losses	$ 104,735	$ 91,365	$ 104,735	$ 91,365
Annualized net charge-offs to average loans outstanding:	0.27%	0.08%	0.17%	0.15%
Traditional C&I
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	$ 17,649	$ 18,075	$ 14,201	$ 19,072
Charge-offs	(123)	(3,415)	(5,716)	(8,818)
Recoveries	136	235	720	674
Net charge-offs	13	(3,180)	(4,996)	(8,144)
Provision / (credit)	(3,196)	(179)	5,261	3,788
Ending allowance for Loan Losses	14,466	14,716	14,466	14,716
Asset-based lending
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	11,905	5,837	7,979	6,625
Charge-offs	(9,577)	0	(13,128)	0
Recoveries	0	0	0	9
Net charge-offs	(9,577)	0	(13,128)	9
Provision / (credit)	11,640	991	19,117	194
Ending allowance for Loan Losses	13,968	6,828	13,968	6,828
Payroll finance
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	1,391	1,658	2,738	1,565
Charge-offs	0	(2)	(84)	(316)
Recoveries	8	5	12	34
Net charge-offs	8	3	(72)	(282)
Provision / (credit)	538	522	(729)	900
Ending allowance for Loan Losses	1,937	2,183	1,937	2,183
Warehouse lending
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	843	2,787	2,800	3,705
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net charge-offs	0	0	0	0
Provision / (credit)	(296)	(102)	(2,253)	(1,020)
Ending allowance for Loan Losses	547	2,685	547	2,685
Factored receivables
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	1,157	1,321	1,064	1,395
Charge-offs	(14)	(18)	(73)	(181)
Recoveries	3	2	128	7
Net charge-offs	(11)	(16)	55	(174)
Provision / (credit)	(130)	203	(103)	287
Ending allowance for Loan Losses	1,016	1,508	1,016	1,508
Equipment financing
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	14,284	8,841	12,450	4,862
Charge-offs	(2,711)	(829)	(5,295)	(7,505)
Recoveries	422	85	632	347
Net charge-offs	(2,289)	(744)	(4,663)	(7,158)
Provision / (credit)	4,114	3,056	8,322	13,449
Ending allowance for Loan Losses	16,109	11,153	16,109	11,153
Public sector finance
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	1,594	1,354	1,739	1,797
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net charge-offs	0	0	0	0
Provision / (credit)	(55)	90	(200)	(353)
Ending allowance for Loan Losses	1,539	1,444	1,539	1,444
Commercial real estate
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	34,846	26,870	32,285	24,945
Charge-offs	(53)	(359)	(308)	(4,878)
Recoveries	187	612	845	702
Net charge-offs	134	253	537	(4,176)
Provision / (credit)	(2,869)	4,345	(711)	10,699
Ending allowance for Loan Losses	32,111	31,468	32,111	31,468
Multi-family
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	9,360	7,389	8,355	3,261
Charge-offs	0	(168)	0	(168)
Recoveries	90	4	199	7
Net charge-offs	90	(164)	199	(161)
Provision / (credit)	106	457	1,002	4,582
Ending allowance for Loan Losses	9,556	7,682	9,556	7,682
ADC
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	2,272	2,172	1,769	1,680
Charge-offs	(6)	0	(6)	(721)
Recoveries	0	0	0	0
Net charge-offs	(6)	0	(6)	(721)
Provision / (credit)	1,900	(296)	2,403	917
Ending allowance for Loan Losses	4,166	1,876	4,166	1,876
Residential mortgage
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	7,109	5,917	7,454	5,819
Charge-offs	(1,984)	(114)	(3,758)	(697)
Recoveries	126	5	128	54
Net charge-offs	(1,858)	(109)	(3,630)	(643)
Provision / (credit)	2,121	992	3,548	1,624
Ending allowance for Loan Losses	7,372	6,800	7,372	6,800
Consumer
Summary of activity in allowance for loan losses and recorded investments in loans by portfolio segment based on impairment method
Beginning allowance for loan losses	2,254	3,805	2,843	3,181
Charge-offs	(241)	(458)	(1,151)	(1,074)
Recoveries	108	254	513	482
Net charge-offs	(133)	(204)	(638)	(592)
Provision / (credit)	(173)	(579)	(257)	433
Ending allowance for Loan Losses	$ 1,948	$ 3,022	$ 1,948	$ 3,022

Allowance for Loan Losses - Nar

Allowance for Loan Losses - Narrative (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Maximum loan balance for credit risk to be evaluated on a homogeneous basis	$ 750,000
Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans acquired transferred to originated	44,278,000	$ 51,282,000
Gross loans by segment	136,972,000	113,180,000
Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans acquired transferred to originated	122,641,000	95,575,000
Gross loans by segment	277,975,000	266,047,000
Doubtful
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	0
Loss
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	0	0
Consumer | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	92,000	2,164,000
Consumer | Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	12,313,000	10,465,000
Originated Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans acquired transferred to originated	1,064,724,000	1,365,682,000
Originated Loan | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	86,762,000	89,955,000
Originated Loan | Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	243,769,000	214,578,000
Originated Loan | Consumer | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	92,000	1,919,000
Originated Loan | Consumer | Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	$ 9,294,000	7,223,000
Originated Loan | Consumer | Doubtful
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment		$ 59,000

Allowance for Loan Losses - Val

Allowance for Loan Losses - Valuation Allowances Recorded Against Portfolio Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	$ 136,972	$ 113,180
Special mention | Traditional C&I
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	15,219	12,102
Special mention | Asset-based lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	58,235	14,033
Special mention | Payroll finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	201	9,682
Special mention | Factored receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment		0
Special mention | Equipment financing
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	19,438	9,966
Special mention | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	32,368	14,012
Special mention | Multi-family
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	9,177	43,811
Special mention | ADC
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	1,855	0
Special mention | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	387	7,410
Special mention | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	92	2,164
Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	277,975	266,047
Substandard | Traditional C&I
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	37,288	52,031
Substandard | Asset-based lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	24,922	21,865
Substandard | Payroll finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	16,923	17,766
Substandard | Factored receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment		508
Substandard | Equipment financing
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	44,402	21,256
Substandard | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	59,594	51,462
Substandard | Multi-family
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	19,909	24,354
Substandard | ADC
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	961	434
Substandard | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	61,663	65,906
Substandard | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	12,313	10,465
Originated Loan | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	86,762	89,955
Originated Loan | Special mention | Traditional C&I
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	15,159	12,003
Originated Loan | Special mention | Asset-based lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	27,931	14,033
Originated Loan | Special mention | Payroll finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	201	9,682
Originated Loan | Special mention | Factored receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment		0
Originated Loan | Special mention | Equipment financing
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	11,956	9,966
Originated Loan | Special mention | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	22,760	3,852
Originated Loan | Special mention | Multi-family
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	6,421	33,321
Originated Loan | Special mention | ADC
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	1,855	0
Originated Loan | Special mention | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	387	5,179
Originated Loan | Special mention | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	92	1,919
Originated Loan | Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	243,769	214,578
Originated Loan | Substandard | Traditional C&I
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	36,409	51,903
Originated Loan | Substandard | Asset-based lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	24,922	21,865
Originated Loan | Substandard | Payroll finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	16,923	17,766
Originated Loan | Substandard | Factored receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment		508
Originated Loan | Substandard | Equipment financing
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	44,402	21,256
Originated Loan | Substandard | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	54,219	43,336
Originated Loan | Substandard | Multi-family
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	19,181	20,812
Originated Loan | Substandard | ADC
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	961	434
Originated Loan | Substandard | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	37,458	29,475
Originated Loan | Substandard | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	9,294	7,223
Acquired Loan | Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	50,210	23,225
Acquired Loan | Special mention | Traditional C&I
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	60	99
Acquired Loan | Special mention | Asset-based lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	30,304	0
Acquired Loan | Special mention | Payroll finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	0	0
Acquired Loan | Special mention | Factored receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment		0
Acquired Loan | Special mention | Equipment financing
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	7,482	0
Acquired Loan | Special mention | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	9,608	10,160
Acquired Loan | Special mention | Multi-family
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	2,756	10,490
Acquired Loan | Special mention | ADC
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	0	0
Acquired Loan | Special mention | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	0	2,231
Acquired Loan | Special mention | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	0	245
Acquired Loan | Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	34,206	51,469
Acquired Loan | Substandard | Traditional C&I
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	879	128
Acquired Loan | Substandard | Asset-based lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	0	0
Acquired Loan | Substandard | Payroll finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	0	0
Acquired Loan | Substandard | Factored receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment		0
Acquired Loan | Substandard | Equipment financing
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	0	0
Acquired Loan | Substandard | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	5,375	8,126
Acquired Loan | Substandard | Multi-family
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	728	3,542
Acquired Loan | Substandard | ADC
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	0	0
Acquired Loan | Substandard | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	24,205	36,431
Acquired Loan | Substandard | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Gross loans by segment	$ 3,019	$ 3,242

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Balance of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 1,657,814	$ 1,613,033
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	115,149	129,545
Core deposits
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	90,507	104,263
Customer lists
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	4,142	4,740
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	0	42
Trade name
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	$ 20,500	$ 20,500

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Future Amortization Expense (Details) $ in Thousands	Sep. 30, 2019USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2019	$ 4,785
2020	16,800
2021	15,104
2022	13,703
2023	12,322
2024	10,448
Thereafter	21,487
Total	$ 94,649

Deposits - Balances (Details)

Deposits - Balances (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Deposits [Abstract]
Non-interest bearing demand	$ 4,586,632	$ 4,241,923
Interest bearing demand	4,236,267	4,207,392
Savings	2,348,903	2,382,520
Money market	7,493,074	7,905,382
Certificates of deposit	2,914,448	2,476,931
Total deposits	$ 21,579,324	$ 21,214,148

Deposits - Narrative (Details)

Deposits - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Deposits [Abstract]
Municipal deposits	$ 2,234,630	$ 1,751,670

Deposits - Brokered Deposits (D

Deposits - Brokered Deposits (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
List of Company's Brokered deposits
Brokered deposits	$ 1,278,428	$ 1,157,823
Interest bearing demand
List of Company's Brokered deposits
Brokered deposits	22,908	23,742
Money market
List of Company's Brokered deposits
Brokered deposits	1,027,549	1,134,081
Certificates of deposits
List of Company's Brokered deposits
Brokered deposits	$ 227,971	$ 0

Borrowings - Borrowings and Wei

Borrowings - Borrowings and Weighted Average Interest Rates (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Mar. 29, 2016
By period to maturity:
Total borrowings, amount	$ 3,174,224	$ 5,214,183
Total borrowings, rate	2.41%	2.52%
Less than one year, amount	$ 1,900,440	$ 3,958,635
Less than one year, rate	2.31%	2.48%
One to two years, amount	$ 1,075,663	$ 831,889
One to two years, rate	2.10%	2.28%
Two to three years, amount	$ 25,000	$ 250,716
Two to three years, rate	1.71%	2.04%
Greater than five years, amount	$ 173,121	$ 172,943
Greater than five years, rate	5.45%	5.45%
FHLB borrowings
By period to maturity:
Total borrowings, amount	$ 2,800,907	$ 4,838,772
Total borrowings, rate	2.16%	2.40%
Repurchase agreements
By period to maturity:
Total borrowings, amount	$ 26,544	$ 21,338
Total borrowings, rate	1.20%	1.20%
Senior Notes | 3.50% Senior Notes
Debt Instrument [Line Items]
Interest rate	3.50%
By period to maturity:
Total borrowings, amount	$ 173,652	$ 181,130
Total borrowings, rate	3.19%	3.19%
Subordinated Notes
Debt Instrument [Line Items]
Interest rate			5.25%
By period to maturity:
Total borrowings, amount	$ 173,121	$ 172,943
Total borrowings, rate	5.45%	5.45%

Borrowings - Narrative (Details

Borrowings - Narrative (Details) - USD ($)	Sep. 02, 2016	Mar. 29, 2016	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2019	Aug. 27, 2019	Oct. 02, 2017
Debt Instrument [Line Items]
Bank pledged mortgages			$ 7,729,593,000	$ 8,526,247,000	$ 7,729,593,000
Increased borrowing capacity by pledging securities			$ 2,629,582,000		$ 2,629,582,000
Weighted average interest rate on debt			2.41%	2.52%	2.41%
Minimum
Debt Instrument [Line Items]
Repurchase agreements maturity					1 day
Maximum
Debt Instrument [Line Items]
Repurchase agreements maturity					45 days
FHLB Borrowings
Debt Instrument [Line Items]
Unused borrowing capacity			$ 4,721,450,000		$ 4,721,450,000
Weighted average interest rate on debt			2.16%	2.40%	2.16%
Subordinated notes
Debt Instrument [Line Items]
Interest rate		5.25%
Weighted average interest rate on debt			5.45%	5.45%	5.45%
Principal amount	$ 65,000,000	$ 110,000,000
Private placement discount rate	1.25%	1.25%
Debt issuance costs	$ 275,000	$ 500,000
Issue premium	0.50%
Unamortized discount			$ 1,879,000		$ 1,879,000
Effective yield			5.45%		5.45%
Subordinated notes | Three-month LIBOR
Debt Instrument [Line Items]
Basis spread on LIBOR rates		3.937%
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Revolving line of credit amount						$ 35,000,000
Revolving line of credit balance			$ 0	$ 0	$ 0
Required balance			$ 0		$ 0
Duration of minimum outstanding balance					30 days
Line of Credit | One-month LIBOR | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on LIBOR rates					1.25%
3.50% Senior Notes
Debt Instrument [Line Items]
Extinguishment of Debt, Amount				$ 19,627,000
3.50% Senior Notes | Senior Notes
Debt Instrument [Line Items]
Interest rate			3.50%		3.50%
Weighted average interest rate on debt			3.19%	3.19%	3.19%
Astoria Financial Corporation | 3.50% Senior Notes | Senior Notes
Debt Instrument [Line Items]
Interest rate							3.50%
Principal amount of debt assumed in merger							$ 200,000,000
Percentage recorded for estimated fair value of debt assumed							100.76%
Weighted average interest rate on debt			3.19%		3.19%
Senior Notes amount repurchased			$ 7,000,000		$ 7,000,000
Gain recognized on debt repurchased			46,000
Adjustment | Astoria Financial Corporation | 3.50% Senior Notes | Senior Notes
Debt Instrument [Line Items]
Fair value of debt			$ 279,000		$ 279,000

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets		$ 113,985
Operating lease liabilities		$ 120,700
Operating lease renewal term		10 years
Operating lease option to terminate term		2 years
Operating leases rent expense, before Topic 842 adoption	$ 4,572		$ 13,972
Minimum
Lessee, Lease, Description [Line Items]
Operating lease remaining lease term		1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease remaining lease term		16 years

Leases - Lease Cost (Details)

Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Operating lease expense	$ 4,913	$ 14,695
Sub-lease income	(845)	(2,002)
Net lease expense	$ 4,068	$ 12,693

Leases - Maturities of Operatin

Leases - Maturities of Operating Lease Liabilities (Details) $ in Thousands	Sep. 30, 2019USD ($)
Leases [Abstract]
Remainder of 2019	$ 4,968
2020	19,379
2021	17,823
2022	16,109
2023	14,504
2024	12,703
2025 and thereafter	54,229
Total lease payments	139,715
Interest	19,015
Present value of lease liabilities	$ 120,700

Leases - Weighted Average Terms

Leases - Weighted Average Terms and Discount Rates (Details)	Sep. 30, 2019
Leases [Abstract]
Weighted average remaining lease term (years)	8 years 2 months 15 days
Weighted average remaining discount rate	3.25%

Derivatives - Narrative (Detail

Derivatives - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Derivative Instruments and Hedges, Assets [Abstract]
Cash Paid as STM	$ 58,844	$ 5,214

Derivatives - Derivative Inform

Derivatives - Derivative Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Other assets
Summary of derivatives
Average maturity (in years)	5 years 4 months 13 days	5 years 10 months 24 days
Weighted average fixed rate	4.54%		4.65%
Other liabilities
Summary of derivatives
Average maturity (in years)	5 years 4 months 13 days	5 years 10 months 24 days
Weighted average fixed rate	4.54%		4.65%
Interest rate swap | Other assets
Summary of derivatives
Derivative assets, notional amount	$ 1,636,100		$ 1,073,353
Derivative assets, fair value	$ 84,989		18,215
Interest rate swap | Other assets | One-month LIBOR
Summary of derivatives
Basis spread	2.20%
Interest rate swap | Other liabilities
Summary of derivatives
Derivative liabilities, notional amount	$ (1,636,100)		(1,073,353)
Swaps	$ (26,145)		(13,001)
Interest rate swap | Other liabilities | One-month LIBOR
Summary of derivatives
Basis spread	2.20%
Third-party interest rate swap | Other assets
Summary of derivatives
Derivative assets, notional amount	$ 143,241		516,419
Derivative assets, fair value	140		$ 1,963
Third-party interest rate swap | Other assets | One-month LIBOR
Summary of derivatives
Basis spread			2.29%
Third-party interest rate swap | Other liabilities
Summary of derivatives
Derivative liabilities, notional amount	(1,492,859)		$ (556,934)
Swaps	(26,023)		(4,351)
Customer interest rate swap | Other assets
Summary of derivatives
Derivative assets, notional amount	1,492,859		556,934
Derivative assets, fair value	84,849		16,252
Customer interest rate swap | Other liabilities
Summary of derivatives
Derivative liabilities, notional amount	(143,241)		(516,419)
Swaps	$ (122)		$ (8,650)
Customer interest rate swap | Other liabilities | One-month LIBOR
Summary of derivatives
Basis spread			2.29%

Income Taxes - (Details)

Income Taxes - (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Efftective tax rate reconciliation:
Income before income tax expense	$ 154,996,000	$ 146,821,000	$ 405,364,000	$ 421,305,000
Tax at federal statutory rate of 21%	32,549,000	30,833,000	85,126,000	88,474,000
State and local income taxes, net of federal tax benefit	9,469,000	7,330,000	22,347,000	21,284,000
Tax exempt interest, net of disallowed interest	(5,429,000)	(4,970,000)	(15,985,000)	(14,435,000)
BOLI income	(2,441,000)	(861,000)	(4,103,000)	(2,406,000)
Low income housing tax credits and other benefits	(5,431,000)	(401,000)	(14,592,000)	(2,903,000)
Low income housing investment amortization expense	4,627,000	0	12,510,000	0
Equity-based stock compensation benefit	0	0	(106,000)	(441,000)
FDIC insurance premium limitation	239,000	466,000	717,000	1,483,000
Other, net	(1,034,000)	(5,226,000)	(894,000)	(2,514,000)
Actual income tax expense	$ 32,549,000	$ 27,171,000	$ 85,020,000	$ 88,542,000
Effective income tax rate	21.00%	18.50%	21.00%	21.00%
Net deferred tax liability	$ 13,170,000		$ 13,170,000
Net deferred tax asset					$ 53,990,000
Valuation allowance	0		0		0
Unrecognized tax benefits	$ 0		$ 0		$ 0

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) $ in Thousands	May 29, 2019shares	Sep. 30, 2019USD ($)Planshares	Sep. 30, 2018shares	May 28, 2019shares	Dec. 31, 2018shares	May 28, 2015shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of active stock-based compensation plans | Plan		1
Shares remaining that are authorized and available for future grant (in shares)		3,371,609			2,318,950
Intrinsic value of options outstanding | $		$ 4,133
Grant of share options (in shares)		0	0
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of contract		10 years
Stock options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for awards		1 year
Stock options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for awards		5 years
Non-vested stock awards/performance units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period total unrecognized compensation cost related to non-vested shares granted		1 year 11 months 26 days
2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)				4,454,318		2,800,000
Amended Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	7,000,000
Number of additional shares authorized (in shares)	2,545,682	2,545,682

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock-based Compensation Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	May 29, 2019	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share-Based Compensation Arrangement By Share-Based Payment Award, Shares Available For Grant [Roll Forward]
Beginning balance (in shares)			2,318,950		2,318,950
Granted (in shares)					(1,507,792)
Stock awards vested (in shares)			(70,353)		(70,353)
Exercised (in shares)					0
Forfeited (in shares)					86,622
Canceled/expired (in shares)					(1,500)
Ending balance (in shares)		3,371,609			3,371,609
Stock options outstanding - Number of shares
Beginning balance (in shares)			686,539		686,539
Granted (in shares)					0	0
Stock awards vested (in shares)					0
Exercised (in shares)					(215,997)
Forfeited (in shares)					(1,500)
Canceled/expired (in shares)					0
Ending balance (in shares)		469,042			469,042
Exercisable at end of period (in shares)		469,042			469,042
Stock options outstanding - Weighted average exercise price
Beginning balance (USD per share)			$ 11.20		$ 11.20
Granted (USD per share)					0
Stock awards vested (USD per share)					0
Exercised (USD per share)					11.09
Forfeited (USD per share)					10.03
Canceled/expired (USD per share)
Ending balance (USD per share)		$ 11.25			11.25
Exercisable at end of period (USD per share)		$ 11.25			$ 11.25
Performance measurement period					3 years
Vesting percentage			150.00%
Stock-based compensation expense		$ 4,565		$ 3,115	$ 14,293	$ 9,304
Non-vested stock awards/performance units
Stock options outstanding - Weighted average exercise price
Stock-based compensation expense		$ 4,565		$ 3,113	$ 14,293	$ 9,299
Recognition and Retention Plan | Non-vested stock awards/performance units
Non-vested stock awards/stock units outstanding - Number of shares
Beginning balance (in shares)			1,333,514		1,333,514
Granted (in shares)					1,507,792
Stock awards vested (in shares)					(553,432)
Forfeited (in shares)					(85,122)
Canceled/expired (in shares)					0
Ending balance (in shares)		2,202,752			2,202,752
Non-vested stock awards/stock units outstanding - Weighted average grant date fair value
Beginning balance (USD per share)			$ 22.12		$ 22.12
Granted (USD per share)					19.63
Stock awards vested (USD per share)					19.21
Forfeited (USD per share)					22.30
Canceled/expired (USD per share)					0
Ending balance (USD per share)		$ 20.98			$ 20.98
Amended Omnibus Plan
Share-Based Compensation Arrangement By Share-Based Payment Award, Shares Available For Grant [Roll Forward]
Amended 2015 Omnibus Equity and Incentive Plan	2,545,682				2,545,682
February 2016 | Performance Shares
Stock options outstanding - Weighted average exercise price
Stock-based compensation expense			$ 1,000

Stock-Based Compensation - St_2

Stock-Based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 4,565	$ 3,115	$ 14,293	$ 9,304
Stock-based compensation expense, income tax benefit	959	654	3,002	1,954
Proceeds from stock option exercises	508	154	2,397	556
Unrecognized stock-based compensation, stock options	0		0
Unrecognized stock-based compensation, non-vested stock awards/performance units	32,405		32,405
Total unrecognized stock-based compensation expense	32,405		32,405
Stock options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	0	2	0	5
Non-vested stock awards/performance units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 4,565	$ 3,113	$ 14,293	$ 9,299

Pension and Other Post-Retire_3

Pension and Other Post-Retirement Benefits - Net Pension and Post-retirement Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	3,044	2,121	8,382	6,364
Expected return on plan assets	(4,044)	(3,353)	(10,303)	(10,058)
Net amortization and deferral	0	0	0	0
Net periodic pension and other post-retirement (benefit) expense	(1,000)	(1,232)	(1,921)	(3,694)
Other Post Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	15	20	45	62
Interest cost	265	254	835	780
Expected return on plan assets	0	0	0	0
Net amortization and deferral	(82)	0	(247)	0
Net periodic pension and other post-retirement (benefit) expense	$ 198	$ 274	$ 633	$ 842

Pension and Other Post-Retire_4

Pension and Other Post-Retirement Benefits - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to fund pension and other post retirement benefits	$ 214	$ 41,825	$ 897	$ 42,500
Astoria Bank Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Net gain due to plan termination	12,097
Astoria Bank Pension Plan | Other assets
Defined Benefit Plan Disclosure [Line Items]
Plan reversion asset recorded upon plan termination	16,538		16,538
Overfunded Plan | Astoria Bank Pension Plan | Other assets
Defined Benefit Plan Disclosure [Line Items]
Funded (unfunded) amount					$ 13,608
Underfunded Plan | Other liabilities
Defined Benefit Plan Disclosure [Line Items]
Funded (unfunded) amount	$ (35,191)		$ (35,191)		$ (35,278)

Non-Interest Income and Other_3

Non-Interest Income and Other Non-Interest Expense - (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Income and Expenses [Abstract]
Professional fees	$ 4,438	$ 2,866	$ 14,966	$ 9,269
Advertising and promotion	2,514	1,147	4,889	3,962
Telephone	1,511	1,238	5,115	4,500
Operational losses	536	791	3,026	2,945
Insurance & surety bond premium	982	1,299	3,050	2,680
Other	6,620	5,832	22,573	16,324
Total other non-interest expense	$ 16,601	$ 13,173	$ 53,619	$ 39,680

Earnings Per Common Share - (De

Earnings Per Common Share - (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net income available to common stockholders	$ 120,465	$ 117,657	$ 314,386	$ 326,775
Weighted average common shares outstanding for computation of basic EPS (in shares)	203,090,365	225,088,511	207,685,051	224,969,121
Common-equivalent shares due to the dilutive effect of stock options and unvested performance share grants (in shares)	476,217	534,384	423,524	535,342
Weighted average common shares for computation of diluted EPS (in shares)	203,566,582	225,622,895	208,108,575	225,504,463
EPS(2):
Basic (USD per share)	$ 0.59	$ 0.52	$ 1.51	$ 1.45
Diluted (USD per share)	$ 0.59	$ 0.52	$ 1.51	$ 1.45
Weighted average common shares that could be exercised that were anti-dilutive for the period (in shares)	0	0	0	0

Stockholders' Equity - Narrativ

Stockholders' Equity - Narrative (Details) - USD ($) $ in Thousands	Apr. 24, 2019	Sep. 30, 2019	Sep. 30, 2018
Class of Stock [Line Items]
Aggregate dividend capacity without prior regulatory approval		$ 165,000
Stock repurchased during period (in shares)		15,312,694	0
Additional number of shares authorized to be repurchased (in shares)	10,000,000
Shares authorized for repurchase program (in shares)		20,000,000
Remaining capacity of shares available for repurchase under the program		5,572,535
Sterling National Bank
Class of Stock [Line Items]
Tier 2 capital		$ 173,121
Sterling Bancorp
Class of Stock [Line Items]
Tier 2 capital		$ 147,186

Stockholders' Equity - Complian

Stockholders' Equity - Compliance with Regulatory Capital Requirements (Schedule) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Sterling National Bank
Common equity tier 1 to RWA:
Tier 1 common equity, actual, capital amount	$ 2,817,082	$ 2,915,484
Tier 1 common equity, actual, ratio	12.73%	13.55%
Tier 1 common equity required for minimum capital adequacy, phase-in schedule, capital amount		$ 1,371,480
Tier 1 common equity required for minimum capital adequacy, phase-in schedule, ratio		6.375%
Tier 1 common equity required for minimum capital adequacy, fully phased-in, capital amount	$ 1,548,458	$ 1,505,939
Tier 1 common equity required for minimum capital adequacy, phase-in schedule, ratio	7.00%	7.00%
Tier 1 common equity required to be well capitalized, capital amount	$ 1,437,854	$ 1,398,372
Tier 1 common equity required to be well capitalized, ratio	6.50%	6.50%
Tier 1 capital to RWA:
Tier 1 risk-based capital, actual, capital amount	$ 2,817,082	$ 2,915,484
Tier 1 risk-based capital, ratio	12.73%	13.55%
Tier 1 risk-based capital required for minimum capital adequacy, phase-in schedule, capital amount		$ 1,694,181
Tier 1 risk-based capital required for minimum capital adequacy, phase-in schedule, ratio		7.875%
Tier 1 risk-based capital required for minimum capital adequacy, fully phased-in, capital amount	$ 1,880,270	$ 1,828,640
Tier 1 risk-based capital required for minimum capital adequacy, fully phased-in, ratio	8.50%	8.50%
Tier 1 risk-based capital required to be well capitalized, capital amount	$ 1,769,666	$ 1,721,073
Tier 1 risk-based capital required to be well capitalized, ratio	8.00%	8.00%
Total capital to RWA:
Total risk-based capital, actual, capital amount	$ 3,095,592	$ 3,184,758
Total risk-based capital, ratio	13.99%	14.80%
Total risk-based capital required for minimum capital adequacy, phase-in schedule, capital amount		$ 2,124,450
Total risk-based capital required for minimum capital adequacy, phase-in schedule, ratio		9.875%
Total risk-based capital required for minimum capital adequacy, fully phased-in, capital amount	$ 2,322,687	$ 2,258,908
Total risk-based capital required for minimum capital adequacy, fully phased-in, ratio	10.50%	10.50%
Total risk-based capital required to be well capitalized, capital amount	$ 2,212,083	$ 2,151,341
Total risk-based capital required to be well capitalized, ratio	10.00%	10.00%
Tier 1 leverage ratio:
Tier 1 (core) capital, actual, capital amount	$ 2,817,082	$ 2,915,484
Tier 1 (core) capital, ratio	10.08%	9.94%
Tier 1 (core) capital required for minimum capital adequacy, phase-in schedule, capital amount		$ 1,172,964
Tier 1 (core) capital required for minimum capital adequacy, phase-in schedule, ratio		4.00%
Tier 1 (core) capital required for minimum capital adequacy, fully phased-in, capital amount	$ 1,117,759	$ 1,172,964
Tier 1 (core) capital required for minimum capital adequacy, fully phased-in, ratio	4.00%	4.00%
Tier 1 (core) capital required to be well capitalized, capital amount	$ 1,397,198	$ 1,466,206
Tier 1 (core) capital required to be well capitalized, ratio	5.00%	5.00%
Sterling Bancorp
Common equity tier 1 to RWA:
Tier 1 common equity, actual, capital amount	$ 2,596,901	$ 2,649,593
Tier 1 common equity, actual, ratio	11.73%	12.31%
Tier 1 common equity required for minimum capital adequacy, phase-in schedule, capital amount		$ 1,372,457
Tier 1 common equity required for minimum capital adequacy, phase-in schedule, ratio		6.375%
Tier 1 common equity required for minimum capital adequacy, fully phased-in, capital amount	$ 1,549,838	$ 1,507,011
Tier 1 common equity required for minimum capital adequacy, phase-in schedule, ratio	7.00%	7.00%
Tier 1 capital to RWA:
Tier 1 risk-based capital, actual, capital amount	$ 2,734,699	$ 2,788,016
Tier 1 risk-based capital, ratio	12.35%	12.95%
Tier 1 risk-based capital required for minimum capital adequacy, phase-in schedule, capital amount		$ 1,695,388
Tier 1 risk-based capital required for minimum capital adequacy, phase-in schedule, ratio		7.875%
Tier 1 risk-based capital required for minimum capital adequacy, fully phased-in, capital amount	$ 1,881,946	$ 1,829,942
Tier 1 risk-based capital required for minimum capital adequacy, fully phased-in, ratio	8.50%	8.50%
Total capital to RWA:
Total risk-based capital, actual, capital amount	$ 2,987,273	$ 3,027,124
Total risk-based capital, ratio	13.49%	14.06%
Total risk-based capital required for minimum capital adequacy, phase-in schedule, capital amount		$ 2,125,963
Total risk-based capital required for minimum capital adequacy, phase-in schedule, ratio		9.875%
Total risk-based capital required for minimum capital adequacy, fully phased-in, capital amount	$ 2,324,757	$ 2,260,517
Total risk-based capital required for minimum capital adequacy, fully phased-in, ratio	10.50%	10.50%
Tier 1 leverage ratio:
Tier 1 (core) capital, actual, capital amount	$ 2,734,699	$ 2,788,016
Tier 1 (core) capital, ratio	9.78%	9.50%
Tier 1 (core) capital required for minimum capital adequacy, phase-in schedule, capital amount		$ 1,173,883
Tier 1 (core) capital required for minimum capital adequacy, phase-in schedule, ratio		4.00%
Tier 1 (core) capital required for minimum capital adequacy, fully phased-in, capital amount	$ 1,118,770	$ 1,173,883
Tier 1 (core) capital required for minimum capital adequacy, fully phased-in, ratio	4.00%	4.00%

Commitments and Contingencies_2

Commitments and Contingencies - (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Loan origination commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Lending-related instruments	$ 575,798	$ 417,027
Unused lines of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Lending-related instruments	1,524,355	1,737,315
Letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Lending-related instruments	$ 308,689	$ 287,779

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financial assets:
Available for sale, at fair value	$ 3,061,419	$ 3,870,563
Level 1 inputs
Financial assets:
Available for sale, at fair value	0	0
Swaps	0	0
Financial liabilities:
Swaps	0	0
Level 2 inputs
Financial assets:
Available for sale, at fair value	3,061,419	3,870,563
Swaps	84,989	18,215
Financial liabilities:
Swaps	26,145	13,001
Level 3 inputs
Financial assets:
Available for sale, at fair value	0	0
Swaps	0	0
Financial liabilities:
Swaps	0	0
Fair Value, Measurements, Recurring
Financial assets:
Available for sale, at fair value	3,061,419	3,870,563
Swaps	84,989	18,215
Total assets	3,146,408	3,888,778
Financial liabilities:
Swaps	(26,145)	(13,001)
Total liabilities	(26,145)	(13,001)
Fair Value, Measurements, Recurring | Level 1 inputs
Financial assets:
Available for sale, at fair value	0	0
Swaps	0	0
Total assets	0	0
Financial liabilities:
Swaps	0	0
Total liabilities	0	0
Fair Value, Measurements, Recurring | Level 2 inputs
Financial assets:
Available for sale, at fair value	3,061,419	3,870,563
Swaps	84,989	18,215
Total assets	3,146,408	3,888,778
Financial liabilities:
Swaps	(26,145)	(13,001)
Total liabilities	(26,145)	(13,001)
Fair Value, Measurements, Recurring | Level 3 inputs
Financial assets:
Available for sale, at fair value	0	0
Swaps	0	0
Total assets	0	0
Financial liabilities:
Swaps	0	0
Total liabilities	0	0
Agency-backed
Financial assets:
Available for sale, at fair value	1,602,821	2,268,851
Agency-backed | Fair Value, Measurements, Recurring
Financial assets:
Available for sale, at fair value	1,602,821	2,268,851
Agency-backed | Fair Value, Measurements, Recurring | Level 1 inputs
Financial assets:
Available for sale, at fair value	0	0
Agency-backed | Fair Value, Measurements, Recurring | Level 2 inputs
Financial assets:
Available for sale, at fair value	1,602,821	2,268,851
Agency-backed | Fair Value, Measurements, Recurring | Level 3 inputs
Financial assets:
Available for sale, at fair value	0	0
CMOs/Other MBS
Financial assets:
Available for sale, at fair value	537,374	574,770
CMOs/Other MBS | Fair Value, Measurements, Recurring
Financial assets:
Available for sale, at fair value	537,374	574,770
CMOs/Other MBS | Fair Value, Measurements, Recurring | Level 1 inputs
Financial assets:
Available for sale, at fair value	0	0
CMOs/Other MBS | Fair Value, Measurements, Recurring | Level 2 inputs
Financial assets:
Available for sale, at fair value	537,374	574,770
CMOs/Other MBS | Fair Value, Measurements, Recurring | Level 3 inputs
Financial assets:
Available for sale, at fair value	0	0
Total residential MBS
Financial assets:
Available for sale, at fair value	2,140,195	2,843,621
Total residential MBS | Fair Value, Measurements, Recurring
Financial assets:
Available for sale, at fair value	2,140,195	2,843,621
Total residential MBS | Fair Value, Measurements, Recurring | Level 1 inputs
Financial assets:
Available for sale, at fair value	0	0
Total residential MBS | Fair Value, Measurements, Recurring | Level 2 inputs
Financial assets:
Available for sale, at fair value	2,140,195	2,843,621
Total residential MBS | Fair Value, Measurements, Recurring | Level 3 inputs
Financial assets:
Available for sale, at fair value	0	0
Federal agencies
Financial assets:
Available for sale, at fair value	162,897	273,973
Federal agencies | Fair Value, Measurements, Recurring
Financial assets:
Available for sale, at fair value	162,897	273,973
Federal agencies | Fair Value, Measurements, Recurring | Level 1 inputs
Financial assets:
Available for sale, at fair value	0	0
Federal agencies | Fair Value, Measurements, Recurring | Level 2 inputs
Financial assets:
Available for sale, at fair value	162,897	273,973
Federal agencies | Fair Value, Measurements, Recurring | Level 3 inputs
Financial assets:
Available for sale, at fair value	0	0
Corporate
Financial assets:
Available for sale, at fair value	304,773	527,965
Corporate | Fair Value, Measurements, Recurring
Financial assets:
Available for sale, at fair value	304,773	527,964
Corporate | Fair Value, Measurements, Recurring | Level 1 inputs
Financial assets:
Available for sale, at fair value	0	0
Corporate | Fair Value, Measurements, Recurring | Level 2 inputs
Financial assets:
Available for sale, at fair value	304,773	527,964
Corporate | Fair Value, Measurements, Recurring | Level 3 inputs
Financial assets:
Available for sale, at fair value	0	0
State and municipal
Financial assets:
Available for sale, at fair value	453,554	225,004
State and municipal | Fair Value, Measurements, Recurring
Financial assets:
Available for sale, at fair value	453,554	225,004
State and municipal | Fair Value, Measurements, Recurring | Level 1 inputs
Financial assets:
Available for sale, at fair value	0	0
State and municipal | Fair Value, Measurements, Recurring | Level 2 inputs
Financial assets:
Available for sale, at fair value	453,554	225,004
State and municipal | Fair Value, Measurements, Recurring | Level 3 inputs
Financial assets:
Available for sale, at fair value	0	0
Total other securities
Financial assets:
Available for sale, at fair value	921,224	1,026,942
Total other securities | Fair Value, Measurements, Recurring
Financial assets:
Available for sale, at fair value	921,224	1,026,942
Total other securities | Fair Value, Measurements, Recurring | Level 1 inputs
Financial assets:
Available for sale, at fair value	0	0
Total other securities | Fair Value, Measurements, Recurring | Level 2 inputs
Financial assets:
Available for sale, at fair value	921,224	1,026,942
Total other securities | Fair Value, Measurements, Recurring | Level 3 inputs
Financial assets:
Available for sale, at fair value	$ 0	$ 0

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Changes in fair value recognized on provisions on loans held by the Company	$ 18,220	$ 10,477
Mortgage servicing rights	$ 8,983		$ 11,715
Percentage appraisals discounted	22.00%		22.00%
Assets taken in foreclosure, defaulted loans and facilities held for sale	$ 13,006		$ 19,377
Changes in fair value recognized through income for foreclosed assets held by the Company	742	$ 553
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, net	$ 93,413		$ 100,998
Measurement Input, Prepayment Rate | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and liabilities, measurement input	8.87%		7.98%
Measurement Input, Prepayment Rate | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and liabilities, measurement input	21.33%		24.07%
Measurement Input, Prepayment Rate | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and liabilities, measurement input	10.76%		8.54%
Measurement Input, Discount Rate | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and liabilities, measurement input	9.50%		9.00%
Measurement Input, Discount Rate | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and liabilities, measurement input	20.00%		20.00%
Measurement Input, Discount Rate | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and liabilities, measurement input	9.85%	9.60%

Fair Value Measurements - Impai

Fair Value Measurements - Impaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Level 1 inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	$ 0	$ 0
Level 2 inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0	0
Level 3 inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	20,867,041	19,033,743
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	93,413	100,998
Collateral Pledged | Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	50,137	41,484
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Traditional C&I
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	14,718	28,780
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Asset-based lending
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	18,609
Collateral Pledged | Fair Value, Measurements, Nonrecurring | CRE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	12,665	10,725
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Multi-family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	1,194	1,210
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	2,951	769
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 1 inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0	0
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 1 inputs | Traditional C&I
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0	0
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 1 inputs | Asset-based lending
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 1 inputs | CRE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0	0
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 1 inputs | Multi-family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0	0
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 1 inputs | Residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0	0
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 2 inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0	0
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 2 inputs | Traditional C&I
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0	0
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 2 inputs | Asset-based lending
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 2 inputs | CRE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0	0
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 2 inputs | Multi-family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0	0
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 2 inputs | Residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	0	0
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 3 inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	50,137	41,484
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 3 inputs | Traditional C&I
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	14,718	28,780
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 3 inputs | Asset-based lending
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	18,609
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 3 inputs | CRE
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	12,665	10,725
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 3 inputs | Multi-family
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	1,194	1,210
Collateral Pledged | Fair Value, Measurements, Nonrecurring | Level 3 inputs | Residential mortgage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total impaired loans measured at fair value	$ 2,951	$ 769

Fair Value Measurements - Sum_2

Fair Value Measurements - Summary of Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financial assets:
Available for sale, at fair value	$ 3,061,419	$ 3,870,563
Securities held to maturity, fair value	2,061,887	2,740,522
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Senior Notes	(173,652)	(181,130)
Subordinated Notes	(173,121)	(172,943)
Carrying amount
Financial assets:
Cash and cash equivalents	545,603	438,110
Available for sale, at fair value	3,061,419	3,870,563
Securities held to maturity, fair value	1,985,592	2,796,617
Loans held for sale	4,627	1,565,979
Portfolio loans, net	20,725,428	19,122,853
Accrued interest receivable on securities	33,815	38,722
Accrued interest receivable on loans	71,066	68,389
FHLB stock and FRB stock	276,929	369,690
Swaps	84,989	18,215
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Non-maturity deposits	(18,664,876)	(18,737,217)
Certificates of deposit	(2,914,448)	(2,476,931)
FHLB borrowings	(2,800,907)	(4,838,772)
Other borrowings	(26,544)	(21,338)
Senior Notes	(173,652)	(181,130)
Subordinated Notes	(173,121)	(172,943)
Mortgage escrow funds	(84,595)	(72,891)
Accrued interest payable on deposits	(5,417)	(3,191)
Accrued interest payable on borrowings	(14,239)	(11,823)
Swaps	(26,145)	(13,001)
Level 1 inputs
Financial assets:
Cash and cash equivalents	545,603	438,110
Available for sale, at fair value	0	0
Securities held to maturity, fair value	0	0
Loans held for sale	0	0
Portfolio loans, net	0	0
Accrued interest receivable on securities	0	0
Accrued interest receivable on loans	0	0
FHLB stock and FRB stock	0	0
Swaps	0	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Non-maturity deposits	(18,664,876)	(18,737,217)
Certificates of deposit	0	0
FHLB borrowings	0	0
Other borrowings	0	0
Senior Notes	0	0
Subordinated Notes	0	0
Mortgage escrow funds	0	0
Accrued interest payable on deposits	0	0
Accrued interest payable on borrowings	0	0
Swaps	0	0
Level 2 inputs
Financial assets:
Cash and cash equivalents	0	0
Available for sale, at fair value	3,061,419	3,870,563
Securities held to maturity, fair value	2,061,887	2,740,522
Loans held for sale	4,627	1,565,979
Portfolio loans, net	0	0
Accrued interest receivable on securities	33,815	38,722
Accrued interest receivable on loans	0	0
FHLB stock and FRB stock	0	0
Swaps	84,989	18,215
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Non-maturity deposits	0	0
Certificates of deposit	(2,910,499)	(2,447,534)
FHLB borrowings	(2,802,337)	(4,821,652)
Other borrowings	(26,544)	(21,337)
Senior Notes	(174,420)	(179,786)
Subordinated Notes	(182,500)	(177,481)
Mortgage escrow funds	(84,595)	(64,074)
Accrued interest payable on deposits	(5,417)	(3,191)
Accrued interest payable on borrowings	(14,239)	(11,823)
Swaps	(26,145)	(13,001)
Level 3 inputs
Financial assets:
Cash and cash equivalents	0	0
Available for sale, at fair value	0	0
Securities held to maturity, fair value	0	0
Loans held for sale	0	0
Portfolio loans, net	20,867,041	19,033,743
Accrued interest receivable on securities	0	0
Accrued interest receivable on loans	71,066	68,389
FHLB stock and FRB stock	0	0
Swaps	0	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Non-maturity deposits	0	0
Certificates of deposit	0	0
FHLB borrowings	0	0
Other borrowings	0	0
Senior Notes	0	0
Subordinated Notes	0	0
Mortgage escrow funds	0	0
Accrued interest payable on deposits	0	0
Accrued interest payable on borrowings	0	0
Swaps	$ 0	$ 0

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Components of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended		12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax	$ 6,616			$ (26,387)			$ 153,510	$ (120,758)
Other comprehensive income (loss), tax benefit	(1,828)			7,293			(42,431)	33,378
Other comprehensive income (loss), net of tax	4,788	$ 46,956	$ 59,335	(19,094)	$ (20,537)	$ (47,749)	111,079	(87,380)
Total stockholders’ equity	4,520,967	4,459,158	4,419,223	4,438,303	4,352,735	4,273,755	4,520,967	4,438,303	$ 4,428,853	$ 4,240,178
Net unrealized holding (loss) gain on available for sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total stockholders’ equity	43,310	27,243		(115,409)	(95,852)		43,310	(115,409)	(75,077)	(22,324)
Net unrealized holding (loss) gain on available for sale securities | Available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax							59,853		(103,756)
Other comprehensive income (loss), tax benefit							(16,543)		28,679
Other comprehensive income (loss), net of tax							43,310		(75,077)
Net unrealized holding (loss) gain on available for sale securities | Held-to-maturity securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax							(861)		(3,518)
Other comprehensive income (loss), tax benefit							238		972
Other comprehensive income (loss), net of tax							(623)		(2,546)
Net unrealized holding gain (loss) on retirement plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), before tax							3,381		15,900
Other comprehensive income (loss), tax benefit							(934)		(4,222)
Other comprehensive income (loss), net of tax							2,447		11,678
Total stockholders’ equity	2,447	13,812		(559)	(859)		2,447	(559)	11,678	(1,164)
Accumulated other comprehensive (loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), net of tax	4,788	46,956	59,335	(19,094)	(20,537)	(47,749)
Total stockholders’ equity	$ 45,134	$ 40,346	$ (6,610)	$ (118,675)	$ (99,581)	$ (79,044)	$ 45,134	$ (118,675)	$ (65,945)	$ (26,166)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Changes in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	$ 4,459,158	$ 4,352,735	$ 4,240,178	$ 4,428,853	$ 4,240,178
Other comprehensive gain (loss) before reclassification	21,047	(19,613)		121,992	(94,611)
Securities reclassified from held to maturity to available for sale				(8,548)
Reclassification of the stranded income tax effects from the enactment of the Tax Cuts and Jobs Act from accumulated other comprehensive (loss)					(5,129)
Amounts reclassified from AOCI	(16,259)	519		(2,365)	7,231
Total other comprehensive income	4,788	(19,094)		111,079	(92,509)
Balance, ending	4,520,967	4,438,303	4,273,755	4,520,967	4,438,303
Net unrealized holding (loss) gain on available for sale securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	27,243	(95,852)	(22,324)	(75,077)	(22,324)
Other comprehensive gain (loss) before reclassification	21,047	(19,613)		121,992	(94,611)
Securities reclassified from held to maturity to available for sale				(8,548)
Reclassification of the stranded income tax effects from the enactment of the Tax Cuts and Jobs Act from accumulated other comprehensive (loss)					(4,376)
Amounts reclassified from AOCI	(4,980)	56		4,943	5,902
Total other comprehensive income	16,067	(19,557)		118,387	(93,085)
Balance, ending	43,310	(115,409)		43,310	(115,409)
Net unrealized holding (loss) gain on securities transferred to held to maturity
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	(709)	(2,870)	(2,678)	(2,546)	(2,678)
Other comprehensive gain (loss) before reclassification	0	0		0	0
Securities reclassified from held to maturity to available for sale				0
Reclassification of the stranded income tax effects from the enactment of the Tax Cuts and Jobs Act from accumulated other comprehensive (loss)					(525)
Amounts reclassified from AOCI	86	163		1,923	496
Total other comprehensive income	86	163		1,923	(29)
Balance, ending	(623)	(2,707)		(623)	(2,707)
Net unrealized holding gain (loss) on retirement plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	13,812	(859)	(1,164)	11,678	(1,164)
Other comprehensive gain (loss) before reclassification	0	0		0	0
Securities reclassified from held to maturity to available for sale				0
Reclassification of the stranded income tax effects from the enactment of the Tax Cuts and Jobs Act from accumulated other comprehensive (loss)					(228)
Amounts reclassified from AOCI	(11,365)	300		(9,231)	833
Total other comprehensive income	(11,365)	300		(9,231)	605
Balance, ending	2,447	(559)		2,447	(559)
Accumulated other comprehensive (loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning	40,346	(99,581)	(26,166)	(65,945)	(26,166)
Reclassification of the stranded income tax effects from the enactment of the Tax Cuts and Jobs Act from accumulated other comprehensive (loss)			(5,129)
Balance, ending	$ 45,134	$ (118,675)	$ (79,044)	$ 45,134	$ (118,675)

Recently Issued Accounting St_2

Recently Issued Accounting Standards Not Yet Adopted - Narrative (Details) - USD ($) $ in Thousands	Jan. 01, 2020	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Estimate for allowance for credit loss impact from ASU 2016-13 adoption		$ 104,735	$ 95,677
Minimum | Forecast | ASU 2016-13
Financing Receivable, Allowance for Credit Loss [Line Items]
Estimate for allowance for credit loss impact from ASU 2016-13 adoption	$ 55,000
Maximum | Forecast | ASU 2016-13
Financing Receivable, Allowance for Credit Loss [Line Items]
Estimate for allowance for credit loss impact from ASU 2016-13 adoption	75,000
PCI Loans | Minimum | Forecast | ASU 2016-13
Financing Receivable, Allowance for Credit Loss [Line Items]
Estimate for allowance for credit loss impact from ASU 2016-13 adoption	25,000
PCI Loans | Maximum | Forecast | ASU 2016-13
Financing Receivable, Allowance for Credit Loss [Line Items]
Estimate for allowance for credit loss impact from ASU 2016-13 adoption	$ 30,000

Subsequent Event - Acquisitio_2

Subsequent Event - Acquisition of Commercial Equipment Finance Loans and Leases Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Subsequent Event [Line Items]
Portfolio loans	$ 20,830,163	$ 19,218,530
Commercial loans portfolio segment
Subsequent Event [Line Items]
Portfolio loans	18,204,291	16,207,681
Commercial loans portfolio segment | Commercial and industrial
Subsequent Event [Line Items]
Portfolio loans	7,792,569	6,533,386
Commercial loans portfolio segment | Equipment financing | Commercial and industrial
Subsequent Event [Line Items]
Portfolio loans	1,174,714	1,215,042
Originated Loan
Subsequent Event [Line Items]
Portfolio loans	15,014,618	12,882,655
Originated Loan | Commercial loans portfolio segment
Subsequent Event [Line Items]
Portfolio loans	14,321,549	12,107,373
Originated Loan | Commercial loans portfolio segment | Commercial and industrial
Subsequent Event [Line Items]
Portfolio loans	7,149,148	6,157,044
Originated Loan | Commercial loans portfolio segment | Equipment financing | Commercial and industrial
Subsequent Event [Line Items]
Portfolio loans	893,255	$ 913,751
Originated Loan | Commercial loans portfolio segment | Equipment financing | Commercial and industrial | Santander Bank, N.A
Subsequent Event [Line Items]
Portfolio loans	$ 843,000
Tax-equivalent yield	4.30%
Approximate duration	3 years 6 months
Average relationship size	$ 5,000