Sterling Bancorp (STL) 10-Q 28 Jul 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 26, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	STERLING BANCORP
Entity Central Index Key	1,070,154
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		135,658,226

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
ASSETS:
Cash and due from banks	$ 282,167	$ 293,646
Securities:
Available for sale, at fair value	2,095,872	1,727,417
Held to maturity, at amortized cost (fair value of $1,449,975 and $1,357,997 at June 30, 2017 and December 31, 2016, respectively)	1,456,304	1,391,421
Total securities	3,552,176	3,118,838
Loans held for sale	0	41,889
Portfolio loans	10,232,317	9,527,230
Allowance for loan losses	(70,151)	(63,622)
Portfolio loans, net	10,162,166	9,463,608
Federal Home Loan Bank (“FHLB”) and Federal Reserve Bank (“FRB”) stock, at cost	160,241	135,098
Accrued interest receivable	47,548	43,319
Premises and equipment, net	57,794	57,318
Goodwill	696,600	696,600
Other intangible assets, net	61,884	66,353
Bank owned life insurance	202,911	199,889
Other real estate owned	10,198	13,619
Other assets	142,991	48,270
Total assets	15,376,676	14,178,447
LIABILITIES:
Deposits	10,502,710	10,068,259
FHLB borrowings	2,290,000	1,791,000
Other borrowings	122,596	16,642
Senior Notes	76,635	76,469
Subordinated Notes	172,607	172,501
Mortgage escrow funds	16,431	13,572
Other liabilities	264,314	184,821
Total liabilities	13,445,293	12,323,264
Commitments and Contingent liabilities (See Note 16. “Commitments and Contingencies”)	0	0
STOCKHOLDERS’ EQUITY:
Preferred stock (par value $0.01 per share; 10,000,000 shares authorized; none issued or outstanding)	0	0
Common stock (par value $0.01 per share; 310,000,000 share authorized at June 30, 2017; 190,000,000 shares authorized at December 31, 2016; 141,043,149 shares issued at June 30, 2017 and December 31, 2016; 135,658,226 and 135,257,570 shares outstanding at June 30, 2017 and December 31, 2016, respectively)	1,411	1,411
Additional paid-in capital	1,592,299	1,597,287
Treasury stock, at cost (5,384,923 shares at June 30, 2017 and 5,785,579 at December 31, 2016)	(61,576)	(66,188)
Retained earnings	415,617	349,308
Accumulated other comprehensive (loss), net of tax (benefit) of $(10,686) at June 30, 2017 and $(17,390) at December 31, 2016	(16,368)	(26,635)
Total stockholders’ equity	1,931,383	1,855,183
Total liabilities and stockholders’ equity	$ 15,376,676	$ 14,178,447

Consolidated Balance Sheets (U3

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Securities held to maturity	$ 1,449,975	$ 1,357,997
Preferred stock, par value (USD per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized	310,000,000	190,000,000
Common stock, shares issued	141,043,149	141,043,149
Common stock, shares outstanding	135,658,226	135,257,570
Treasury stock, shares	5,384,923	5,785,579
Accumulated other comprehensive income, tax	$ 10,686	$ 17,390

Consolidated Income Statements

Consolidated Income Statements (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest and dividend income:
Loans and loan fees	$ 111,840	$ 96,658	$ 216,410	$ 185,692
Securities taxable	13,113	10,662	25,395	22,678
Securities non-taxable	7,791	5,871	15,409	9,750
Other earning assets	1,519	1,118	3,049	2,195
Total interest and dividend income	134,263	114,309	260,263	220,315
Interest expense:
Deposits	10,905	8,328	20,413	14,737
Borrowings	10,100	5,601	17,802	11,688
Total interest expense	21,005	13,929	38,215	26,425
Net interest income	113,258	100,380	222,048	193,890
Provisions for loan losses	4,500	5,000	9,000	9,000
Net interest income after provision for loan losses	108,758	95,380	213,048	184,890
Non-interest income:
Accounts receivable management / factoring commissions and other fees	4,137	4,156	7,906	8,650
Mortgage banking income	130	2,367	401	4,369
Deposit fees and service charges	3,249	4,084	6,584	8,574
Net (loss) gain on sale of securities	(230)	4,474	(253)	4,191
Bank owned life insurance	1,652	1,281	3,022	2,608
Investment management fees	323	934	554	2,058
Other	4,357	3,146	8,240	5,422
Total non-interest income	13,618	20,442	26,454	35,872
Non-interest expense:
Compensation and benefits	31,394	31,336	62,785	61,356
Stock-based compensation plans	1,897	1,747	3,633	3,287
Occupancy and office operations	8,833	8,810	16,967	18,092
Amortization of intangible assets	2,187	3,241	4,416	6,294
FDIC insurance and regulatory assessments	2,034	2,300	3,922	4,558
Other real estate owned expense, net	112	541	1,788	1,123
Merger-related expense	1,766	0	4,893	266
Charge for asset write-downs, severance and retention	603	0	603	2,485
Loss on extinguishment of borrowings	0	0	0	8,716
Other	10,831	11,665	21,000	22,394
Total non-interest expense	59,657	59,640	120,007	128,571
Income before income tax expense	62,719	56,182	119,495	92,191
Income tax expense	20,319	18,412	38,028	30,655
Net income	$ 42,400	$ 37,770	$ 81,467	$ 61,536
Weighted average common shares:
Basic (in shares)	135,317,866	130,081,465	135,241,034	129,953,397
Diluted (in shares)	135,922,897	130,688,729	135,867,861	130,522,021
Earnings per common share:
Basic (USD per share)	$ 0.31	$ 0.29	$ 0.60	$ 0.47
Diluted (USD per share)	$ 0.31	$ 0.29	$ 0.60	$ 0.47

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 42,400	$ 37,770	$ 81,467	$ 61,536
Other comprehensive income, before tax:
Change in unrealized holding gains on securities available for sale	11,671	14,849	16,166	41,199
Accretion of net unrealized loss on securities transferred to held to maturity	245	775	488	701
Reclassification adjustment for net realized losses (gains) included in net income	230	(4,474)	253	(4,191)
Change in the actuarial loss of defined benefit plan and post-retirement benefit plans	8	43	64	397
Total other comprehensive income, before tax	12,154	11,193	16,971	38,106
Deferred tax (expense) related to other comprehensive income	(4,801)	(4,422)	(6,704)	(15,052)
Other comprehensive income, net of tax	7,353	6,771	10,267	23,054
Comprehensive income	$ 49,753	$ 44,541	$ 91,734	$ 84,590

Consolidated Statement of Chang

Consolidated Statement of Changes In Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common stock	Additional paid-in capital	Treasury stock	Retained earnings	Accumulated other comprehensive (loss) income
Balance at Dec. 31, 2015	$ 1,665,073	$ 1,367	$ 1,506,612	$ (76,190)	$ 245,408	$ (12,124)
Balance (in shares) at Dec. 31, 2015		130,006,926
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	61,536				61,536
Other comprehensive income	23,054					23,054
Stock option & other stock transactions, net	1,779		327	1,575	(123)
Stock option & other stock transactions, net (in shares)		160,821
Restricted stock awards, net	2,733		(3,912)	5,260	1,385
Restricted stock awards, net (in shares)		452,716
Cash dividends declared	(18,181)				(18,181)
Balance at Jun. 30, 2016	1,735,994	$ 1,367	1,503,027	(69,355)	290,025	10,930
Balance (in shares) at Jun. 30, 2016		130,620,463
Balance at Mar. 31, 2016						4,159
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	37,770
Other comprehensive income	6,771
Balance at Jun. 30, 2016	1,735,994	$ 1,367	1,503,027	(69,355)	290,025	10,930
Balance (in shares) at Jun. 30, 2016		130,620,463
Balance at Dec. 31, 2016	1,855,183	$ 1,411	1,597,287	(66,188)	349,308	(26,635)
Balance (in shares) at Dec. 31, 2016		135,257,570
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	81,467				81,467
Other comprehensive income	10,267					10,267
Stock option & other stock transactions, net	1,224		98	1,533	(407)
Stock option & other stock transactions, net (in shares)		111,648
Restricted stock awards, net	2,132		(5,086)	3,079	4,139
Restricted stock awards, net (in shares)		289,008
Cash dividends declared	(18,890)				(18,890)
Balance at Jun. 30, 2017	1,931,383	$ 1,411	1,592,299	(61,576)	415,617	(16,368)
Balance (in shares) at Jun. 30, 2017		135,658,226
Balance at Mar. 31, 2017						(23,721)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	42,400
Other comprehensive income	7,353
Balance at Jun. 30, 2017	$ 1,931,383	$ 1,411	$ 1,592,299	$ (61,576)	$ 415,617	$ (16,368)
Balance (in shares) at Jun. 30, 2017		135,658,226

Consolidated Statement of Chan7

Consolidated Statement of Changes In Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Statement of Stockholders' Equity [Abstract]
Cash dividends paid (usd per share)	$ 0.14	$ 0.14

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 81,467	$ 61,536
Adjustments to reconcile net income to net cash provided by operating activities:
Provisions for loan losses	9,000	9,000
Net loss from write-downs and sales of other real estate owned	1,208	313
Depreciation of premises and equipment	4,249	4,188
Asset write-downs, severance and retention compensation and other restructuring charges	603	2,485
Amortization of intangible assets	4,416	6,294
Amortization of low income housing tax credits	276	260
Net loss (gain) on sale of securities	253	(4,191)
Net gain on loans held for sale	(831)	(5,075)
Net amortization of premiums on securities	11,090	6,822
Net accretion of purchase discount and amortization of net deferred loan costs	(6,869)	(9,209)
Net accretion of debt issuance costs and amortization of premium on borrowings	272	260
Restricted stock compensation expense	3,535	3,036
Stock option compensation expense	98	251
Originations of loans held for sale	(5,159)	(240,988)
Proceeds from sales of loans held for sale	47,879	222,924
Increase in cash surrender value of bank owned life insurance	(3,022)	(2,608)
Deferred income tax (benefit) expense	(414)	2,986
Other adjustments (principally net changes in other assets and other liabilities)	(22,417)	41,135
Net cash provided by operating activities	125,634	99,419
Purchases of securities:
Available for sale	(473,886)	(325,647)
Held to maturity	(111,794)	(663,291)
Proceeds from maturities, calls and other principal payments on securities:
Available for sale	107,245	112,637
Held to maturity	39,941	16,561
Proceeds from sales of securities available for sale	10,232	558,484
Portfolio loan originations, net	(636,923)	(489,547)
Portfolio loans purchased	(94,912)
Proceeds from sale of loans held for investment	28,990	77,048
Purchases of FHLB and FRB stock, net	(25,143)	13,903
Proceeds from sales of other real estate owned	4,369	1,651
Purchases of premises and equipment	(4,725)	(1,447)
Redemption of bank owned life insurance	0	2,230
Purchases of low income housing tax credits	(5,105)	0
Cash paid for acquisition, net	0	(346,690)
Net cash (used in) investing activities	(1,161,711)	(1,044,108)
Cash flows from financing activities:
Net increase in transaction, savings and money market deposits	415,851	1,222,952
Net increase (decrease) in certificates of deposit	18,600	(17,403)
Net decrease in short-term FHLB borrowings	(451,000)	(138,000)
Advances of term FHLB borrowings	1,425,000	475,000
Repayments of term FHLB borrowings	(475,000)	(672,396)
Net increase in other borrowings	105,954	11,636
Proceeds from issuance of Bank Subordinated Notes	0	108,124
Net increase in mortgage escrow funds	2,859	505
Proceeds from stock option exercises	1,224	1,265
Cash dividends paid	(18,890)	(18,181)
Net cash provided by financing activities	1,024,598	973,502
Net (decrease) increase in cash and cash equivalents	(11,479)	28,813
Cash and cash equivalents at beginning of period	293,646	229,513
Cash and cash equivalents at end of period	282,167	258,326
Supplemental cash flow information:
Interest payments	34,702	25,654
Income tax payments	22,880	18,109
Real estate acquired in settlement of loans	2,156	3,940
Loans transferred from held for investment to held for sale	28,990	77,048
Non-cash assets acquired:
Total loans, net	0	320,447
Accrued interest receivable	0	1,443
Goodwill	0	25,698
Customer list	0	1,500
Premises and equipment, net	0	176
Other assets	0	2,265
Total non-cash assets acquired	0	351,529
Liabilities assumed:
Other liabilities	0	4,839
Total liabilities assumed	0	4,839
Net non-cash assets acquired	0	346,690
Cash and cash equivalents received in acquisitions	0	4,762
Total consideration paid	$ 0	$ 351,452

Basis of Financial Statement Pr

Basis of Financial Statement Presentation	6 Months Ended
	Jun. 30, 2017
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”) 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 the Company follows 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 the Company’s 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, 2016 , included in our Annual Report on Form 10-K, as filed with the SEC on February 27, 2017 (the “2016 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) Pending Merger with Astoria Financial Corporation See Note 20. “Pending Merger with Astoria Financial Corporation” for information. (e) Adoption of New Accounting Standard Effective January 1, 2017, the Company adopted the provisions of Accounting Standard Update (“ASU”) 2016-09, “Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.” This standard requires that all income tax effects related to settlements of stock-based compensation awards be reported in earnings as an increase or decrease to income tax expense. The adoption of this standard reduced reported income tax expense by $64 in the second quarter of 2017, and $806 in the six months ended June 30, 2017. The Company also elected to recognize forfeitures of stock-based compensation awards as they occur, which did not have a material impact to the consolidated financial statements.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2017
Business Combinations [Abstract]
Acquisitions	Acquisitions Restaurant Franchise Financing Loan Portfolio On September 9, 2016 , the Bank acquired a restaurant franchise financing loan portfolio from GE Capital with an unpaid principal balance of $169,760 . Total cash paid for the portfolio was $163,282 , which included a discount to the balance of gross loans receivable of 4.00% , or $6,790 , plus accrued interest receivable. As the acquired assets did not constitute a business, the transaction was accounted for as an asset purchase. These loans are classified as traditional commercial and industrial loans in our financial statements. See Note 4. “Portfolio Loans” for additional information. NSBC Acquisition On March 31, 2016 , the Bank acquired 100% of the outstanding equity interests of NSBC (the “NSBC Acquisition”). NSBC is a provider of asset-based lending solutions to middle market commercial clients. NSBC’s loans had a fair value of $320,447 on the acquisition date and consisted of 100% floating-rate assets. The Bank paid a premium on the balance of gross loans receivable acquired of 5.90% , or $18,906 . The Bank assumed $4,839 of liabilities, which consisted mainly of cash collateral on loans outstanding. The Bank recognized a customer list intangible asset of $1,500 that is being amortized over its 24 -month estimated life and $25,698 of goodwill. The Bank recorded a $1,500 restructuring charge in the first quarter of 2016 consisting mainly of retention and severance compensation, IT contract terminations and professional fees.

Securities

Securities	6 Months Ended
	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Securities	Securities A summary of amortized cost and estimated fair value of securities as of June 30, 2017 and December 31, 2016 is presented below. The term “MBS” refers to mortgage-backed securities and the term “CMO” refers to collateralized mortgage obligations. Both of these terms are further defined in Note 17. “Fair Value Measurements”. June 30, 2017 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 $ 1,471,034 $ 2,442 $ (14,978 ) $ 1,458,498 $ 283,258 $ 1,848 $ (2,534 ) $ 282,572 CMO/Other MBS 71,611 44 (860 ) 70,795 36,814 63 (497 ) 36,380 Total residential MBS 1,542,645 2,486 (15,838 ) 1,529,293 320,072 1,911 (3,031 ) 318,952 Other securities: Federal agencies 238,826 — (7,766 ) 231,060 58,422 1,721 — 60,143 Corporate 71,367 731 (810 ) 71,288 30,000 706 — 30,706 State and municipal 264,032 2,057 (1,858 ) 264,231 1,032,060 7,460 (15,281 ) 1,024,239 Other — — — — 15,750 185 — 15,935 Total other securities 574,225 2,788 (10,434 ) 566,579 1,136,232 10,072 (15,281 ) 1,131,023 Total securities $ 2,116,870 $ 5,274 $ (26,272 ) $ 2,095,872 $ 1,456,304 $ 11,983 $ (18,312 ) $ 1,449,975 December 31, 2016 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 $ 1,213,733 $ 569 $ (20,821 ) $ 1,193,481 $ 277,539 $ 1,353 $ (3,625 ) $ 275,267 CMO/Other MBS 57,563 44 (926 ) 56,681 40,594 74 (572 ) 40,096 Total residential MBS 1,271,296 613 (21,747 ) 1,250,162 318,133 1,427 (4,197 ) 315,363 Other securities: Federal agencies 204,770 2 (10,793 ) 193,979 58,200 1,392 — 59,592 Corporate 43,464 150 (1,108 ) 42,506 35,048 431 (11 ) 35,468 State and municipal 245,304 739 (5,273 ) 240,770 974,290 3,571 (36,232 ) 941,629 Other — — — — 5,750 195 — 5,945 Total other securities 493,538 891 (17,174 ) 477,255 1,073,288 5,589 (36,243 ) 1,042,634 Total securities $ 1,764,834 $ 1,504 $ (38,921 ) $ 1,727,417 $ 1,391,421 $ 7,016 $ (40,440 ) $ 1,357,997 The amortized cost and estimated fair value of securities at June 30, 2017 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. June 30, 2017 Available for sale Held to maturity Amortized cost Fair value Amortized cost Fair value Remaining period to contractual maturity: One year or less $ 12,668 $ 12,704 $ 18,347 $ 18,508 One to five years 160,069 159,861 74,070 75,768 Five to ten years 268,533 263,837 242,409 247,068 Greater than ten years 132,955 130,177 801,406 789,679 Total securities with a stated maturity date 574,225 566,579 1,136,232 1,131,023 Residential MBS 1,542,645 1,529,293 320,072 318,952 Total securities $ 2,116,870 $ 2,095,872 $ 1,456,304 $ 1,449,975 Sales of securities for the periods indicated below were as follows: For the three months ended For the six months ended June 30, June 30, 2017 2016 2017 2016 Available for sale: Proceeds from sales $ 10,000 $ 283,126 $ 10,232 $ 558,484 Gross realized gains — 4,834 6 6,395 Gross realized losses (230 ) (360 ) (259 ) (2,204 ) Income tax (benefit) expense on realized net (losses) gains (75 ) 1,466 (82 ) 1,394 At June 30, 2017 and December 31, 2016 , 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 June 30, 2017 Residential MBS: Agency-backed $ 1,158,592 $ (14,970 ) $ 747 $ (8 ) $ 1,159,339 $ (14,978 ) CMO/Other MBS 37,566 (477 ) 12,972 (383 ) 50,538 (860 ) Total residential MBS 1,196,158 (15,447 ) 13,719 (391 ) 1,209,877 (15,838 ) Other securities: Federal agencies 210,780 (6,497 ) 20,280 (1,269 ) 231,060 (7,766 ) Corporate 17,702 (114 ) 15,182 (696 ) 32,884 (810 ) State and municipal 116,747 (1,769 ) 4,167 (89 ) 120,914 (1,858 ) Total other securities 345,229 (8,380 ) 39,629 (2,054 ) 384,858 (10,434 ) Total $ 1,541,387 $ (23,827 ) $ 53,348 $ (2,445 ) $ 1,594,735 $ (26,272 ) December 31, 2016 Residential MBS: Agency-backed $ 1,101,641 $ (20,816 ) $ 686 $ (5 ) $ 1,102,327 $ (20,821 ) CMO/Other MBS 38,841 (506 ) 15,239 (420 ) 54,080 (926 ) Total residential MBS 1,140,482 (21,322 ) 15,925 (425 ) 1,156,407 (21,747 ) Other securities: Federal agencies 185,504 (10,793 ) 4 — 185,508 (10,793 ) Corporate 10,399 (137 ) 14,942 (971 ) 25,341 (1,108 ) State and municipal 173,062 (5,196 ) 3,733 (77 ) 176,795 (5,273 ) Total other securities 368,965 (16,126 ) 18,679 (1,048 ) 387,644 (17,174 ) Total securities $ 1,509,447 $ (37,448 ) $ 34,604 $ (1,473 ) $ 1,544,051 $ (38,921 ) 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 June 30, 2017 Residential MBS: Agency-backed $ 167,514 $ (2,302 ) $ 5,156 $ (232 ) $ 172,670 $ (2,534 ) CMO/Other MBS 31,595 (495 ) 106 (2 ) 31,701 (497 ) Total residential MBS 199,109 (2,797 ) 5,262 (234 ) 204,371 (3,031 ) Other securities: State and municipal 621,730 (13,682 ) 36,356 (1,599 ) 658,086 (15,281 ) Total other securities 621,730 (13,682 ) 36,356 (1,599 ) 658,086 (15,281 ) Total $ 820,839 $ (16,479 ) $ 41,618 $ (1,833 ) $ 862,457 $ (18,312 ) December 31, 2016 Residential MBS: Agency-backed $ 185,116 $ (3,623 ) $ 213 $ (2 ) $ 185,329 $ (3,625 ) CMO/Other MBS 34,786 (572 ) — — 34,786 (572 ) Total residential MBS 219,902 (4,195 ) 213 (2 ) 220,115 (4,197 ) Other securities: Corporate — — 5,037 (11 ) 5,037 (11 ) State and municipal 758,690 (36,169 ) 2,816 (63 ) 761,506 (36,232 ) Total other securities 758,690 (36,169 ) 7,853 (74 ) 766,543 (36,243 ) Total securities $ 978,592 $ (40,364 ) $ 8,066 $ (76 ) $ 986,658 $ (40,440 ) At June 30, 2017 , a total of 250 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. 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) the intent and ability of the Company to retain its 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 the Company anticipates it will receive full value for the securities. Furthermore, as of June 30, 2017 , 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 the Company 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 June 30, 2017 , 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: June 30, December 31, 2017 2016 Available for sale securities pledged for borrowings, at fair value $ 260,387 $ 67,599 Available for sale securities pledged for municipal deposits, at fair value 334,771 398,961 Available for sale securities pledged for customer back-to-back swaps, at fair value — 126 Held to maturity securities pledged for borrowings, at amortized cost 116,847 55,343 Held to maturity securities pledged for municipal deposits, at amortized cost 868,046 958,246 Total securities pledged $ 1,580,051 $ 1,480,275

Portfolio Loans

Portfolio Loans	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Portfolio Loans	Portfolio Loans The composition of the Company’s loan portfolio, excluding loans held for sale, was the following for the periods presented below: June 30, December 31, 2017 2016 Commercial: Commercial and industrial (“C&I”): Traditional C&I $ 1,602,659 $ 1,404,774 Asset-based lending 723,055 741,942 Payroll finance 239,618 255,549 Warehouse lending 687,701 616,946 Factored receivables 195,690 214,242 Equipment financing 704,750 589,315 Public sector finance 466,316 349,182 Total C&I 4,619,789 4,171,950 Commercial mortgage: Commercial real estate 3,367,888 3,162,942 Multi-family 1,063,097 981,076 Acquisition, development & construction (“ADC”) 223,713 230,086 Total commercial mortgage 4,654,698 4,374,104 Total commercial 9,274,487 8,546,054 Residential mortgage 692,562 697,108 Consumer 265,268 284,068 Total portfolio loans 10,232,317 9,527,230 Allowance for loan losses (70,151 ) (63,622 ) Total portfolio loans, net $ 10,162,166 $ 9,463,608 Total portfolio loans include net deferred loan origination fees of $3,742 and $1,788 at June 30, 2017 and December 31, 2016 , respectively. At June 30, 2017 and December 31, 2016 , the Company pledged loans with an unpaid principal balance of $2,562,880 and $2,050,982 , respectively, to the FHLB as collateral for certain borrowing arrangements. See Note 8. “Borrowings”. The following tables set forth the amounts and status of the Company’s loans, troubled debt restructurings (“TDRs”) and non-performing loans at June 30, 2017 and December 31, 2016 : June 30, 2017 Current 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 1,575,384 $ 1,093 $ 316 $ 39 $ 25,827 $ 1,602,659 Asset-based lending 723,055 — — — — 723,055 Payroll finance 238,813 10 — 577 218 239,618 Warehouse lending 687,701 — — — — 687,701 Factored receivables 195,499 — — — 191 195,690 Equipment financing 696,529 3,617 1,398 — 3,206 704,750 Public sector finance 466,316 — — — — 466,316 Commercial real estate 3,344,334 1,439 234 189 21,692 3,367,888 Multi-family 1,060,837 — 2,200 — 60 1,063,097 ADC 222,449 — — — 1,264 223,713 Residential mortgage 677,836 1,900 970 129 11,727 692,562 Consumer 257,143 806 1,087 1 6,231 265,268 Total portfolio loans $ 10,145,896 $ 8,865 $ 6,205 $ 935 $ 70,416 $ 10,232,317 Total TDRs included above $ 14,029 $ — $ — $ — $ 2,401 $ 16,430 Non-performing loans: Loans 90+ days past due and still accruing $ 935 Non-accrual loans 70,416 Total non-performing loans $ 71,351 December 31, 2016 Current 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 1,376,181 $ 835 $ 817 $ 555 $ 26,386 $ 1,404,774 Asset-based lending 741,942 — — — — 741,942 Payroll finance 254,715 — 14 621 199 255,549 Warehouse lending 616,946 — — — — 616,946 Factored receivables 213,624 — — — 618 214,242 Equipment financing 583,835 2,142 1,092 — 2,246 589,315 Public sector finance 349,182 — — — — 349,182 Commercial real estate 3,140,561 967 — 406 21,008 3,162,942 Multi-family 981,005 — — — 71 981,076 ADC 224,817 — — — 5,269 230,086 Residential mortgage 675,750 5,509 951 108 14,790 697,108 Consumer 274,719 2,423 350 — 6,576 284,068 Total portfolio loans $ 9,433,277 $ 11,876 $ 3,224 $ 1,690 $ 77,163 $ 9,527,230 Total TDRs included above $ 11,032 $ 253 $ — $ — $ 1,989 $ 13,274 Non-performing loans: Loans 90+ days past due and still accruing $ 1,690 Non-accrual loans 77,163 Total non-performing loans $ 78,853 The following table provides additional analysis of the Company’s non-accrual loans at June 30, 2017 and December 31, 2016 : June 30, 2017 December 31, 2016 Recorded investment non-accrual loans Recorded investment PCI (1) non-accrual loans Recorded investment total non-accrual loans Unpaid principal balance non-accrual loans Recorded investment non-accrual loans Recorded investment PCI (1) non-accrual loans Recorded investment total non-accrual loans Unpaid principal balance non-accrual loans Traditional C&I $ 21,877 $ 3,950 $ 25,827 $ 26,419 $ 22,338 $ 4,048 $ 26,386 $ 26,386 Payroll finance 218 — 218 — 199 — 199 199 Factored receivables 191 — 191 — 618 — 618 618 Equipment financing 3,206 — 3,206 3,206 2,246 — 2,246 2,246 Commercial real estate 16,135 5,557 21,692 27,006 15,063 5,945 21,008 25,619 Multi-family 60 — 60 67 71 — 71 71 ADC 1,264 — 1,264 1,411 5,269 — 5,269 5,398 Residential mortgage 10,923 804 11,727 14,345 13,399 1,391 14,790 18,190 Consumer 5,400 831 6,231 7,780 5,719 857 6,576 7,865 Total $ 59,274 $ 11,142 $ 70,416 $ 80,234 $ 64,922 $ 12,241 $ 77,163 $ 86,592 (1) The Company 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”). There were no non-accrual asset-based lending, warehouse lending or public sector finance loans at June 30, 2017 or December 31, 2016 . When the ultimate collectibility 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 collectibility 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 June 30, 2017 and December 31, 2016 , the recorded investment of residential mortgage loans that were in the process of foreclosure was $7,214 and $9,263 , respectively, which are 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 June 30, 2017 : 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 $ 24,870 $ 1,564,147 $ 13,642 $ 1,602,659 $ — $ 15,506 $ 15,506 Asset-based lending — 707,560 15,495 723,055 — 2,582 2,582 Payroll finance 321 239,297 — 239,618 — 1,287 1,287 Warehouse lending — 687,701 — 687,701 — 2,435 2,435 Factored receivables — 195,690 — 195,690 — 1,151 1,151 Equipment financing 5,523 699,227 — 704,750 — 5,735 5,735 Public sector finance — 466,316 — 466,316 — 1,887 1,887 Commercial real estate 16,155 3,310,026 41,707 3,367,888 — 25,181 25,181 Multi-family — 1,058,771 4,326 1,063,097 — 5,028 5,028 ADC 6,409 212,548 4,756 223,713 — 920 920 Residential mortgage 821 690,772 969 692,562 — 5,124 5,124 Consumer 1,497 262,181 1,590 265,268 — 3,315 3,315 Total portfolio loans $ 55,596 $ 10,094,236 $ 82,485 $ 10,232,317 $ — $ 70,151 $ 70,151 The following table sets forth loans evaluated for impairment by segment and the allowance evaluated by segment at December 31, 2016 : 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 $ 25,221 $ 1,365,466 $ 14,087 $ 1,404,774 $ — $ 12,864 $ 12,864 Asset-based lending — 724,247 17,695 741,942 — 3,316 3,316 Payroll finance 570 254,979 — 255,549 — 951 951 Warehouse lending — 616,946 — 616,946 — 1,563 1,563 Factored receivables — 214,242 — 214,242 — 1,669 1,669 Equipment financing 1,413 587,902 — 589,315 — 5,039 5,039 Public sector finance — 349,182 — 349,182 — 1,062 1,062 Commercial real estate 14,853 3,104,057 44,032 3,162,942 — 20,466 20,466 Multi-family — 976,710 4,366 981,076 — 4,991 4,991 ADC 9,025 216,094 4,967 230,086 — 1,931 1,931 Residential mortgage 2,545 692,396 2,167 697,108 — 5,864 5,864 Consumer 1,764 280,710 1,594 284,068 — 3,906 3,906 Total portfolio loans $ 55,391 $ 9,382,931 $ 88,908 $ 9,527,230 $ — $ 63,622 $ 63,622 Management considers a loan to be impaired when, based on current information and events, it is determined that the Company 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, except residential mortgage loans and consumer loans, which includes home equity lines of credit (“HELOC”) with an outstanding balance of $500 or less, which are generally 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 carrying amount of PCI loans is presented in the tables above. At June 30, 2017 , the net recorded amount of PCI loans was $82,485 , which included $15,495 of asset-based lending loans acquired in the NSBC Acquisition. There was $916 and $685 included in the allowance for loan losses associated with PCI loans at June 30, 2017 and December 31, 2016 , respectively. The following table presents the changes in the balance of the accretable yield discount for PCI loans for the three and six months ended June 30, 2017 and 2016 : For the three months ended June 30, For the six months ended June 30, 2017 2016 2017 2016 Balance at beginning of period $ 10,733 $ 12,522 $ 11,117 $ 11,211 Balances acquired in the NSBC Acquisition — — — 2,200 Accretion of income (1,001 ) (1,124 ) (2,200 ) (2,279 ) Disposals 1,145 — 1,960 — Reclassification from non-accretable difference — (91 ) — 175 Balance at end of period $ 10,877 $ 11,307 $ 10,877 $ 11,307 Income is not recognized on PCI loans unless the Company 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 $11,142 and $12,241 at June 30, 2017 and December 31, 2016 , respectively. The following table presents loans individually evaluated for impairment, excluding PCI loans, by segment of loans at June 30, 2017 and December 31, 2016 : June 30, 2017 December 31, 2016 Unpaid principal balance Recorded investment Unpaid principal balance Recorded investment Loans with no related allowance recorded: Traditional C&I $ 25,251 $ 24,870 $ 25,221 $ 25,221 Payroll finance 321 321 570 570 Equipment financing 5,523 5,523 1,413 1,413 Commercial real estate 19,702 16,155 16,365 14,853 ADC 6,671 6,409 9,025 9,025 Residential mortgage 821 821 2,545 2,545 Consumer 1,497 1,497 1,764 1,764 Total $ 59,786 $ 55,596 $ 56,903 $ 55,391 At June 30, 2017 and December 31, 2016 there were no asset-based lending, warehouse lending, factored receivables, public sector finance loans or multi-family loans that were individually evaluated for impairment. The Company’s 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 the Company’s recorded investment. As a result, there were no impaired loans with an allowance recorded at June 30, 2017 or December 31, 2016 . The following tables present the average recorded investment and interest income recognized related to loans individually evaluated for impairment by segment for the three months ended June 30, 2017 and June 30, 2016 : For the three months ended June 30, 2017 June 30, 2016 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 $ 24,922 $ 7 $ — $ 27,033 $ 6 $ — Payroll finance 160 — — — — — Factored receivables — — — 264 — — Equipment financing 3,569 — — 1,528 — — Commercial real estate 14,206 84 — 14,536 34 — Multi-family — — — 867 — — ADC 6,180 54 — 8,558 56 — Residential mortgage 668 — — 515 — — Consumer 1,497 — — 1,497 — — Total $ 51,202 $ 145 $ — $ 54,798 $ 96 $ — There were no impaired loans with an allowance recorded at June 30, 2017 or December 31, 2016 . For the three months and six months ended June 30, 2017 and 2016 , there were no asset-based lending, warehouse lending or public sector finance loans that were impaired and there was no cash-basis interest income recognized. The following tables present the average recorded investment and interest income recognized related to loans individually evaluated for impairment by segment for the six months ended June 30, 2017 and June 30, 2016 : For the six months ended June 30, 2017 June 30, 2016 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 $ 24,897 $ 15 $ — $ 20,779 $ 15 $ — Payroll finance 107 — — — — — Factored receivables — — — 132 — — Equipment financing 2,767 — — 1,195 — — Commercial real estate 13,263 173 — 13,456 104 — Multi-family — — — 875 19 — ADC 5,811 119 — 8,595 115 — Residential mortgage 617 — — 515 — — Consumer 1,497 — — 1,123 — — Total $ 48,959 $ 307 $ — $ 46,670 $ 253 $ — Troubled Debt Restructuring (“TDRs”) The following tables set forth the amounts and past due status of the Company’s TDRs at June 30, 2017 and December 31, 2016 : June 30, 2017 Current loans 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 569 $ — $ — $ — $ — $ 569 Equipment financing 2,938 — — — — 2,938 Commercial real estate 2,958 — — — 125 3,083 ADC 5,150 — — — 921 6,071 Residential mortgage 2,371 — — — 1,355 3,726 Consumer 43 — — — — 43 Total $ 14,029 $ — $ — $ — $ 2,401 $ 16,430 December 31, 2016 Current loans 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 572 $ — $ — $ — $ 128 $ 700 Equipment financing — — — — 29 29 Commercial real estate 2,443 253 — — — 2,696 ADC 5,962 — — — 458 6,420 Residential mortgage 2,055 — — — 1,374 3,429 Total $ 11,032 $ 253 $ — $ — $ 1,989 $ 13,274 There were no asset-based lending, payroll finance, warehouse lending, factored receivables, public sector finance, or multi-family loans that were TDRs for either period presented above. At December 31, 2016, there also were no consumer loans that were TDRs. The Company did not have outstanding commitments to lend additional amounts to customers with loans classified as TDRs as of June 30, 2017 or December 31, 2016 . There were seven loans modified as a TDR in the six months ended June 30, 2017 . These TDRs did not increase the allowance for loan losses and did not result in charge-offs in the six months ended June 30, 2017 . The following table presents loans by segment modified as TDRs that occurred during the first six months of 2017 and 2016 : June 30, 2017 June 30, 2016 Recorded investment Recorded investment Number Pre- modification Post- modification Number Pre- modification Post- modification Equipment financing 2 $ 3,088 $ 3,088 — $ — $ — Commercial real estate 2 1,724 1,724 — — — ADC 1 797 797 — — — Residential mortgage 2 552 551 1 469 469 Total TDRs 7 $ 6,161 $ 6,160 1 $ 469 $ 469 There were no traditional C&I, asset-based lending, payroll finance, warehouse lending, factored receivables, public sector finance, multi-family or consumer loans modified as TDRS during the first six months of 2017 and 2016. There were no TDRs that were modified during the six months ended June 30, 2017 or 2016 that subsequently defaulted (which is defined as missing three consecutive monthly payments or being over 90 days past due on a scheduled payment).

Allowance for Loan Losses

Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Allowance for Loan Losses	Allowance for Loan Losses Activity in the allowance for loan losses for the three and six months ended June 30, 2017 and 2016 is summarized below: For the three months ended June 30, 2017 Beginning balance Charge-offs Recoveries Net charge-offs Provision / (reversal of) Ending balance Traditional C&I $ 14,441 $ (164 ) $ 523 $ 359 $ 706 $ 15,506 Asset-based lending 3,353 — 1 1 (772 ) 2,582 Payroll finance 1,155 — — — 132 1,287 Warehouse lending 1,227 — — — 1,208 2,435 Factored receivables 1,322 (12 ) 2 (10 ) (161 ) 1,151 Equipment financing 6,039 (610 ) 146 (464 ) 160 5,735 Public sector finance 1,249 — — — 638 1,887 Commercial real estate 23,438 (944 ) 98 (846 ) 2,589 25,181 Multi-family 4,102 — — — 926 5,028 ADC 1,170 (22 ) 133 111 (361 ) 920 Residential mortgage 5,715 (120 ) 10 (110 ) (481 ) 5,124 Consumer 3,728 (417 ) 88 (329 ) (84 ) 3,315 Total allowance for loan losses $ 66,939 $ (2,289 ) $ 1,001 $ (1,288 ) $ 4,500 $ 70,151 Annualized net charge-offs to average loans outstanding: 0.05 % For the three months ended June 30, 2016 Beginning balance Charge-offs Recoveries Net charge-offs Provision / (reversal of) Ending balance Traditional C&I $ 10,905 $ (429 ) $ 153 $ (276 ) $ 428 $ 11,057 Asset-based lending 2,809 — 46 46 425 3,280 Payroll finance 1,546 (28 ) 28 — (381 ) 1,165 Warehouse lending 520 — — — 132 652 Factored receivables 1,407 (792 ) 17 (775 ) 953 1,585 Equipment financing 5,393 (572 ) 102 (470 ) 423 5,346 Public sector finance 555 — — — 339 894 Commercial real estate 15,770 (100 ) 53 (47 ) 1,800 17,523 Multi-family 2,996 (18 ) — (18 ) 485 3,463 ADC 2,157 — 104 104 (219 ) 2,042 Residential mortgage 4,850 (209 ) 1 (208 ) 233 4,875 Consumer 4,106 (532 ) 27 (505 ) 382 3,983 Total allowance for loan losses $ 53,014 $ (2,680 ) $ 531 $ (2,149 ) $ 5,000 $ 55,865 Annualized net charge-offs to average loans outstanding: 0.10 % For the six months ended June 30, 2017 Beginning Charge-offs Recoveries Net Provision/ (reversal of) Ending balance Traditional C&I $ 12,864 $ (851 ) $ 662 $ (189 ) $ 2,831 $ 15,506 Asset-based lending 3,316 — 4 4 (738 ) 2,582 Payroll finance 951 — — — 336 1,287 Warehouse lending 1,563 — — — 872 2,435 Factored receivables 1,669 (309 ) 18 (291 ) (227 ) 1,151 Equipment financing 5,039 (1,080 ) 286 (794 ) 1,490 5,735 Public sector finance 1,062 — — 825 1,887 Commercial real estate 20,466 (1,026 ) 100 (926 ) 5,641 25,181 Multi-family 4,991 — — — 37 5,028 ADC 1,931 (22 ) 269 247 (1,258 ) 920 Residential mortgage 5,864 (279 ) 159 (120 ) (620 ) 5,124 Consumer 3,906 (531 ) 129 (402 ) (189 ) 3,315 Total allowance for loan losses $ 63,622 $ (4,098 ) $ 1,627 $ (2,471 ) $ 9,000 $ 70,151 Annualized net charge-offs to average loans outstanding: 0.03 % For the six months ended June 30, 2016 Beginning Charge-offs Recoveries Net Provision/ (reversal of) Ending balance Traditional C&I $ 9,922 $ (918 ) $ 482 $ (436 ) $ 1,571 $ 11,057 Asset-based lending 2,793 — 46 46 441 3,280 Payroll finance 1,936 (28 ) 32 4 (775 ) 1,165 Warehouse lending 589 — — — 63 652 Factored receivables 1,457 (873 ) 41 (832 ) 960 1,585 Equipment financing 4,925 (1,029 ) 210 (819 ) 1,240 5,346 Public sector finance 547 — — — 347 894 Commercial real estate 13,861 (104 ) 74 (30 ) 3,692 17,523 Multi-family 2,741 (18 ) 2 (16 ) 738 3,463 ADC 2,009 — 104 104 (71 ) 2,042 Residential mortgage 5,007 (433 ) 29 (404 ) 272 4,875 Consumer 4,358 (1,043 ) 146 (897 ) 522 3,983 Total allowance for loan losses $ 50,145 $ (4,446 ) $ 1,166 $ (3,280 ) $ 9,000 $ 55,865 Annualized net charge-offs to average loans outstanding: 0.08 % Credit Quality Indicators As part of the ongoing monitoring of the credit quality of the Company’s 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 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. The Company analyzes 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 $500 . This analysis is performed at least quarterly on all criticized/classified loans. The Company uses 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 and 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 June 30, 2017 and December 31, 2016 , the risk category of gross loans by segment was as follows: June 30, 2017 December 31, 2016 Special mention Substandard Doubtful Special mention Substandard Doubtful Traditional C&I $ 18,713 $ 40,096 $ 894 $ 12,125 $ 28,977 $ 442 Asset-based lending 10,937 — — 35,373 — — Payroll finance 15,113 2,342 — — 820 — Factored receivables 633 191 — 185 433 — Equipment financing 6,763 3,869 — 2,128 3,397 — Commercial real estate 44,268 26,787 — 39,190 29,463 — Multi-family 3,541 642 — 7,072 658 — ADC 924 4,414 — 6,899 8,870 — Residential mortgage 970 12,749 — 951 15,796 — Consumer 1,134 6,386 1 646 6,738 — Total $ 102,996 $ 97,476 $ 895 $ 104,569 $ 95,152 $ 442 There were no criticized or classified warehouse lending or public sector finance loans for the periods presented. There were no loans rated “loss” at June 30, 2017 and December 31, 2016 .

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2017
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: June 30, December 31, 2017 2016 Goodwill $ 696,600 $ 696,600 Other intangible assets: Core deposits $ 34,161 $ 37,455 Customer lists 6,769 7,683 Non-compete agreements 417 625 Trade name 20,500 20,500 Fair value of below market leases 37 90 Total $ 61,884 $ 66,353 The decrease in other intangible assets at June 30, 2017 compared to December 31, 2016 was due to amortization of intangibles. The estimated aggregate future amortization expense for intangible assets remaining as of June 30, 2017 was as follows: Amortization expense Remainder of 2017 $ 4,369 2018 7,285 2019 6,074 2020 5,428 2021 5,022 2022 4,522 Thereafter 8,684 Total $ 41,384

Deposits

Deposits	6 Months Ended
	Jun. 30, 2017
Deposits [Abstract]
Deposits	Deposits Deposit balances at June 30, 2017 and December 31, 2016 were as follows: June 30, December 31, 2017 2016 Non-interest bearing demand $ 3,311,860 $ 3,239,332 Interest bearing demand 2,059,940 2,220,456 Savings 795,899 747,031 Money market 3,732,657 3,277,686 Certificates of deposit 602,354 583,754 Total deposits $ 10,502,710 $ 10,068,259 Municipal deposits totaled $1,297,244 and $1,270,921 at June 30, 2017 and December 31, 2016 , 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 June 30, 2017 and December 31, 2016 were as follows: June 30, December 31, 2017 2016 Interest bearing demand $ 46,228 $ 426,437 Savings — 5,560 Money market 473,268 246,572 Money market - reciprocal brokered deposits 148,736 153,060 CDARs 1 and ICS 2 one way 217,271 — Total brokered deposits $ 885,503 $ 831,629 1 CDARs are deposits generated through the Certificate of deposit account registry service. 2 ICS are deposits generated through the Insured cash sweep program.

Borrowings

Borrowings	6 Months Ended
	Jun. 30, 2017
Debt Instruments [Abstract]
Borrowings	Borrowings The Company’s borrowings and weighted average interest rates were as follows for the periods presented: June 30, December 31, 2017 2016 Amount Rate Amount Rate By type of borrowing: FHLB borrowings $ 2,290,000 1.34 % $ 1,791,000 1.01 % Repurchase agreements 22,596 0.73 16,642 0.75 Federal funds purchased 100,000 1.31 — — Senior Notes 76,635 5.98 76,469 5.98 Subordinated Notes 172,607 5.45 172,501 5.45 Total borrowings $ 2,661,838 1.73 % $ 2,056,612 1.56 % By remaining period to maturity: Less than one year $ 1,877,596 1.28 % $ 1,397,642 0.87 % One to two years 461,635 2.24 311,469 2.53 Two to three years 100,000 1.64 75,000 1.50 Three to four years 50,000 1.68 50,000 1.38 Four to five years — — 50,000 1.68 Greater than five years 172,607 5.45 172,501 5.45 Total borrowings $ 2,661,838 1.73 % $ 2,056,612 1.56 % 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 June 30, 2017 and December 31, 2016 , the Bank had total residential mortgage and commercial real estate loans pledged after discount of $2,562,880 and $2,050,982 , 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 June 30, 2017 , the Bank had unused borrowing capacity at the FHLB of $1,115,797 and may increase its borrowing capacity by pledging securities not required to be pledged for other purposes with a collateral value of approximately $1,750,000 . 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 June 30, 2017 and December 31, 2016 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. Federal funds purchased. The Bank maintains federal funds purchase lines with several financial institutions. Federal funds purchased are short-term borrowings that typically mature overnight. Federal funds purchased totaled $100,000 and $0 at June 30, 2017 and December 31, 2016 , respectively. Senior Notes. On July 2, 2013 , the Company issued $100,000 principal amount of 5.50% fixed rate senior notes (the “Senior Notes”) through a private placement at a discount of 1.75% . The cost of issuance was $303 , and at June 30, 2017 and December 31, 2016 the unamortized discount was $365 and $531 , respectively, which will be accreted to interest expense over the life of the Senior Notes, resulting in an effective yield of 5.98% . Interest is due semi-annually in arrears on January 2 and July 2 until maturity on July 2, 2018 . During September 2016, the Company redeemed $23,000 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 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 June 30, 2017 , the net unamortized discount of all Subordinated Notes was $2,393 , 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 also 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 15. “Stockholders’ Equity” for additional information. Revolving line of credit. On September 5, 2016, the Company renewed its $25,000 revolving line of credit facility (the “Credit Facility”). The Credit Facility, which is with another financial institution, matures on September 4, 2017. The balance was zero at June 30, 2017 and December 31, 2016 . The use of proceeds are for general corporate purposes. The Credit Facility and accrued interest is payable at maturity, and the Company is 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, the Company and the Bank must maintain certain ratios related to capital, non-performing assets to capital, reserves to non-performing loans and debt service coverage. The Company and the Bank were in compliance with all requirements of the Credit Facility at June 30, 2017 .

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedges, Assets [Abstract]
Derivatives	Derivatives The Company has entered into certain interest rate swap contracts that are not designated as hedging instruments. These derivative contracts relate to transactions in which the Company enters 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, the Company agrees 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, the Company agrees 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 the Company’s customers to effectively convert a variable rate loan to a fixed rate loan. Because the Company acts as an intermediary for its customers, changes in the fair value of the underlying derivative contracts largely offset each other and do not materially impact results of operations. The Company has 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, or the CME. In the table below, at June 30, 2017 and December 31, 2016 , the OTC derivatives are included in the 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. Effective for the quarter ended March 31, 2017, the CME amended its rulebook to legally characterize 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, or STM. As a result of this change, at June 30, 2017 the Company paid cash as STM in the amount of $2,389 for the net fair value of its CME interest rate swap contracts with another financial institution. The variation margin payment changes daily, positively or negatively, based on a change in the fair value of the underlying interest rate swap contracts. The Company does not typically require its 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, the Company is allowed to access collateral supporting the loan relationship to recover any losses suffered on the derivative asset or liability. Summary information as of June 30, 2017 and December 31, 2016 regarding these derivatives is presented below: Notional amount Average maturity (in years) Weighted average fixed rate Weighted average variable rate Fair value June 30, 2017 Included in other assets: Third-party interest rate swap $ 166,058 $ 296 Customer interest rate swap 264,274 3,568 Total $ 430,332 5.88 4.13 % 1 m Libor + 2.29% $ 3,864 Included in other liabilities: Third-party interest rate swap (264,274 ) $ (3,130 ) Customer interest rate swap (166,058 ) (3,123 ) Total $ (430,332 ) 5.88 4.13 % 1 m Libor + 2.29% $ (6,253 ) December 31, 2016 3rd party interest rate swap 296,282 5.63 3.94 1 m Libor + 2.29% $ 2,088 Customer interest rate swap (296,282 ) 5.63 3.94 1 m Libor + 2.29% (2,088 ) The Company enters into various commitments to sell real estate loans into the secondary market. Such commitments are considered to be derivative financial instruments; however, the fair value of these commitments is not material.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2017
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 six months ended June 30, June 30, 2017 2016 2017 2016 Income before income tax expense $ 62,719 $ 56,182 $ 119,495 $ 92,191 Tax at Federal statutory rate of 35% 21,951 19,664 41,823 32,267 State and local income taxes, net of Federal tax benefit 2,497 2,992 4,771 4,985 Tax-exempt interest, net of disallowed interest (3,790 ) (1,958 ) (7,274 ) (3,792 ) Bank owned life insurance income (560 ) (430 ) (1,022 ) (875 ) Non-deductible acquisition related costs 614 — 956 — Low income housing tax credits (138 ) (180 ) (277 ) (234 ) Stock-based compensation benefit (1) (64 ) — (806 ) — Other, net (191 ) (1,676 ) (143 ) (1,696 ) Actual income tax expense $ 20,319 $ 18,412 $ 38,028 $ 30,655 Effective income tax rate 32.4 % 32.8 % 31.8 % 33.3 % (1) See Note 1. “Basis of Financial Statement Presentation” for additional information. Net deferred tax assets totaled $34,259 at June 30, 2017 and $40,548 at December 31, 2016 . No valuation allowance was recorded against deferred tax assets as of those dates, as management believes it is more likely than not that all of the deferred tax assets will be realized because they were supported by recoverable taxes paid in prior years. 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. The Company is generally no longer subject to examination by Federal, state and local taxing authorities for fiscal years prior to September 30, 2013.

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2017
Retirement Benefits [Abstract]
Stock-Based Compensation	Stock-Based Compensation The Company has active stock-based compensation plans, as described below. The Company’s stockholders approved the 2015 Omnibus Equity and Incentive Plan (the “2015 Plan”) on May 28, 2015. The 2015 Plan permits 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 may be awarded under the 2015 Plan is 2,800,000 shares plus the remaining shares available for grant under the stockholder approved 2014 Stock Incentive Plan (the “2014 Plan”) as of the date of adoption of the 2015 Plan. At June 30, 2017 , there were, in aggregate, 3,291,678 shares available for future grant under the 2015 Plan. The Company’s stockholders approved the 2014 Plan on February 20, 2014. The approval of the 2015 Plan resulted in the termination of the 2014 Plan. Awards granted under the 2014 Plan that were outstanding as of May 28, 2015 will continue to be governed by the 2014 Plan document; however no future grants will be made under the 2014 Plan. Under the 2015 Plan, one share is deducted from the 2015 Plan for every share or share underlying the equity award that is awarded and delivered under the 2015 Plan. Restricted stock awards are granted with a fair value equal to the market price of the Company’s common stock at the date of grant. Stock option awards are granted with a strike price that is equal to the market price of the Company’s common stock at the date of grant. The restricted stock awards generally vest in equal installments annually on the anniversary date and have total vesting periods ranging from 1 to 5 years, while stock options have 10 -year contractual terms. In connection with the merger of the Company and Legacy Sterling Bancorp (“Legacy Sterling”) in 2013, the Company granted 104,152 options at an exercise price of $14.25 per share pursuant to a Registration Statement on Form S-8 under which the Company assumed all outstanding fully-vested Legacy Sterling stock options. All options were exercised or expired on March 15, 2017 . The Company also granted 95,991 shares under the Sterling Bancorp 2013 Employment Inducement Award Plan to certain executive officers of Legacy Sterling. In addition, the Company issued 255,973 shares of restricted stock from shares available under a prior plan to certain executives of Legacy Sterling. The weighted average grant date fair value under both of these plans was $11.72 per share, and the restricted stock awards vested in October 2016. The following table summarizes the activity in the Company’s active stock-based compensation plans for the six months ended June 30, 2017 : 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, 2017 3,639,838 932,223 $ 14.09 1,004,119 $ 11.00 Granted (393,581 ) 393,581 24.15 — — Stock awards vested — (151,862 ) 14.25 — — Exercised — — — (111,648 ) 10.11 Forfeited 46,867 (46,867 ) 18.50 — — Canceled/expired (1,446 ) — — (1,000 ) 13.18 Balance at June 30, 2017 3,291,678 1,127,075 $ 17.40 891,471 $ 11.11 Exercisable at June 30, 2017 774,551 $ 10.77 The total intrinsic value of outstanding in-the-money stock options and outstanding in-the-money exercisable stock options was $ 10,826 and $9,668 , respectively, at June 30, 2017 . The Company uses an option pricing model to estimate the grant date fair value of stock options granted. There were no stock options granted during the six months ended June 30, 2017 or June 30, 2016 . 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 six months ended June 30, June 30, 2017 2016 2017 2016 Stock options $ 48 $ 125 $ 98 $ 251 Non-vested stock awards/performance units 1,849 1,622 3,535 3,036 Total $ 1,897 $ 1,747 $ 3,633 $ 3,287 Income tax benefit 617 573 1,181 1,095 Proceeds from stock option exercises 731 755 1,224 1,265 Unrecognized stock-based compensation expense as of June 30, 2017 was as follows: June 30, 2017 Stock options $ 43 Non-vested stock awards/performance units 13,299 Total $ 13,342 The weighted average period over which unrecognized stock options expense is expected to be recognized is 0.37 years . The weighted average period over which unrecognized non-vested stock awards/performance units expense is expected to be recognized is 1.77 years .

Other Post-Retirement Plans

Other Post-Retirement Plans	6 Months Ended
	Jun. 30, 2017
Retirement Benefits [Abstract]
Other Post-Retirement Plans	Other Post-Retirement Plans Net other post-retirement expense is comprised of the following for the periods presented below: For the three months ended For the six months ended June 30, June 30, 2017 2016 2017 2016 Service cost $ — $ — $ — $ — Interest cost 101 105 201 209 Net amortization and deferral 9 20 18 32 Total other post-retirement expense $ 110 $ 125 $ 219 $ 241 Total other post-retirement expense is included as a component of compensation and benefits expense in the consolidated income statements. The Company’s other post-retirement plans include non-qualified Supplemental Executive Retirement Plans (“SERP”) that provide certain directors, officers and executives with supplemental retirement benefits. The Company contributed $96 and $53 to fund SERP benefits during the six months ended June 30, 2017 and 2016 , respectively. Total post-retirement plan liabilities were $12,248 and $12,125 at June 30, 2017 and December 31, 2016 , respectively, and are included in other liabilities in the consolidated balance sheets.

Other Non-Interest Expense

Other Non-Interest Expense	6 Months Ended
	Jun. 30, 2017
Other Income and Expenses [Abstract]
Other Non-interest Expense	Other Non-interest Expense Other non-interest expense items for the three and six months ended June 30, 2017 and 2016 , respectively, are presented in the following table. For the three months ended For the six months ended June 30, June 30, 2017 2016 2017 2016 Other non-interest expense: Advertising and promotion $ 834 $ 985 $ 1,385 $ 1,536 Professional fees 2,478 2,607 4,683 5,080 Data and check processing 2,421 2,261 4,890 4,015 Insurance & surety bond premium 687 897 1,224 1,682 Other 4,411 4,915 8,818 10,081 Total other non-interest expense $ 10,831 $ 11,665 $ 21,000 $ 22,394

Earnings Per Common Share

Earnings Per Common Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share The following is a summary of the calculation of earnings per share (“EPS”): For the three months ended For the six months ended June 30, June 30, 2017 2016 2017 2016 Net income $ 42,400 $ 37,770 $ 81,467 $ 61,536 Weighted average common shares outstanding for computation of basic EPS 135,317,866 130,081,465 135,241,034 129,953,397 Common-equivalent shares due to the dilutive effect of stock options and unvested performance share grants (1) 605,031 607,264 626,827 568,624 Weighted average common shares for computation of diluted EPS 135,922,897 130,688,729 135,867,861 130,522,021 Earnings per common share: Basic $ 0.31 $ 0.29 $ 0.60 $ 0.47 Diluted 0.31 0.29 0.60 0.47 Weighted average common shares that could be exercised that were anti-dilutive for the period (2) — — — — (1) Represents incremental shares computed using the treasury stock method. (2) Anti-dilutive shares are not included in determining diluted earnings per share. There were no anti-dilutive shares in the three and six months ended June 30, 2017 or June 30, 2016 .

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 2017
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 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 Basel III Capital Rules became effective for the Company and the Bank on January 1, 2015 (subject to a phase-in period for certain provisions). Quantitative measures established by the Basel III Capital Rules to ensure capital adequacy require the maintenance of minimum amounts and ratios (set forth in the table below) of Common Equity Tier 1 capital (as defined in the regulations), Tier 1 capital (as defined in the regulations) and Total capital (as defined in the regulations) to risk-weighted assets (as defined in the regulations, “RWA”), and of Tier 1 capital to adjusted quarterly average assets (as defined in the regulations, the “Tier 1 leverage ratio”). 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 the Company includes a permissible portion of the allowance for loan losses and $172,607 and $154,296 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 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 Tier 1 leverage ratio is calculated by dividing Tier 1 capital by adjusted quarterly average total assets, which excludes goodwill and other intangible assets, among other items. When fully phased-in on January 1, 2019, the Basel III Capital Rules will require the Company and the Bank to maintain: (i) a minimum ratio of Common Equity Tier 1 capital to RWA of at least 4.5%, plus a 2.5% “capital conservation buffer” (which is added to the 4.5% Common Equity Tier 1 capital ratio as that buffer is phased in, effectively resulting in a minimum ratio of Common Equity Tier 1 capital to RWA of at least 7.0% upon full implementation); (ii) a minimum ratio of Tier 1 capital to RWA of at least 6.0%, plus the capital conservation buffer (which is added to the 6.0% Tier 1 capital ratio as that buffer is phased in, effectively resulting in a minimum Tier 1 capital ratio of 8.5% upon full implementation); (iii) a minimum ratio of Total capital (that is, Tier 1 plus Tier 2) to RWA of at least 8.0%, plus the capital conservation buffer (which is added to the 8.0% total capital ratio as that buffer is phased in, effectively resulting in a minimum total capital ratio of 10.5% upon full implementation); and (iv) a minimum Tier 1 leverage ratio of 4.0%. The implementation of the capital conservation buffer began on January 1, 2016 at the 0.625% level and effective January 1, 2017 increased to the 1.25% level and will be phased-in over a four-year period (increasing by 0.625% on each subsequent January 1, until it reaches 2.5% on January 1, 2019). The Basel III Capital Rules also provide for a “countercyclical capital buffer” that is applicable to only certain covered institutions and does not have any current applicability to the Company or the Bank. The aforementioned capital conservation buffer is designed to absorb losses during periods of economic stress. Banking institutions with a ratio of Common Equity Tier 1 capital to RWA above the minimum but below the conservation buffer (or below the combined capital conservation buffer and countercyclical capital buffer, when the latter is applied) will face constraints on dividends, equity repurchases and compensation based on the amount of the shortfall. The following tables present actual and required capital ratios as of June 30, 2017 and December 31, 2016 for the Company and the Bank under the Basel III Capital Rules. The minimum required capital amounts presented include the minimum required capital levels as of June 30, 2017 and December 31, 2016 based on the phase-in provisions of the Basel III Capital Rules and the minimum required capital levels as of January 1, 2019 when the Basel III Capital Rules have been fully phased-in. 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 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 June 30, 2017 Common equity tier 1 to RWA: Sterling National Bank $ 1,243,272 10.64 % $ 671,582 5.75 % $ 817,578 7.00 % $ 759,180 6.50 % Sterling Bancorp 1,220,876 10.46 671,374 5.75 817,325 7.00 N/A N/A Tier 1 capital to RWA: Sterling National Bank 1,243,272 10.64 % 846,778 7.25 % 992,774 8.50 % 934,375 8.00 % Sterling Bancorp 1,220,876 10.46 846,515 7.25 992,466 8.50 N/A N/A Total capital to RWA: Sterling National Bank 1,486,574 12.73 % 1,080,371 9.25 % 1,226,367 10.50 % 1,167,969 10.00 % Sterling Bancorp 1,446,070 12.38 1,080,036 9.25 1,225,987 10.50 N/A N/A Tier 1 leverage ratio: Sterling National Bank 1,243,272 8.89 559,607 4.00 % 559,607 4.00 % 699,509 5.00 % Sterling Bancorp 1,220,876 8.73 559,476 4.00 559,476 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, 2016 Common equity tier 1 to RWA: Sterling National Bank $ 1,176,497 10.87 % $ 554,663 5.125 % $ 757,588 7.00 % $ 703,475 6.50 % Sterling Bancorp 1,160,739 10.73 554,474 5.125 757,330 7.00 N/A N/A Tier 1 capital to RWA: Sterling National Bank 1,176,497 10.87 % 717,003 6.625 % 919,928 8.50 % 865,815 8.00 % Sterling Bancorp 1,160,739 10.73 716,759 6.625 919,615 8.50 N/A N/A Total capital to RWA: Sterling National Bank 1,413,165 13.06 % 933,457 8.625 % 1,136,382 10.50 % 1,082,269 10.00 % Sterling Bancorp 1,377,547 12.73 933,139 8.625 1,135,995 10.50 N/A N/A Tier 1 leverage ratio: Sterling National Bank 1,176,497 9.08 % 518,308 4.000 % 518,308 4.00 % 647,885 5.00 % Sterling Bancorp 1,160,739 8.95 518,733 4.000 518,733 4.00 N/A N/A The Bank and the Company are subject to the regulatory capital requirements administered by the Federal Reserve, 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 fail to meet the minimum capital requirements, which could have a direct material effect on our financial statements. As of June 30, 2017 , management believes that the Bank and the Company meet all capital adequacy requirements to which they are subject. (b) Dividend Restrictions The Company is 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 June 30, 2017 , the Bank had capacity to pay aggregate dividends of up to $189,659 to the Company without prior regulatory approval. (c) Capital Raise On November 22, 2016 , the Company completed a public offering of 4,370,000 shares of common stock at an offering price of $20.95 per share for gross proceeds of approximately $92,863 , and net proceeds, after underwriting discounts, commissions and other costs of issuance, of $90,995 . (d) Stock Repurchase Plans From time to time, the Company’s Board of Directors has authorized stock repurchase plans. The Company has 776,713 shares that are available to be purchased under a previously announced stock repurchase program. There were no shares repurchased under the repurchase program during the six months ended June 30, 2017 or June 30, 2016 . (e) Liquidation Rights Upon completion of a second-step conversion in January 2004 , the Bank established a special “liquidation account” in accordance with Office of the Comptroller of the Currency regulations. The account was established for the benefit of Eligible Account Holders and Supplemental Eligible Account Holders (as defined in the plan of conversion) in an amount equal to the greater of (i) the Mutual Holding Company’s (as defined in the plan of conversion) ownership interest in the retained earnings of the Bank as of the date of its latest balance sheet contained in the prospectus; or (ii) the retained earnings of the Bank at the time that the Bank reorganized into the Mutual Holding Company in 1999. Each Eligible Account Holder and Supplemental Eligible Account Holder that continues to maintain his or her deposit account at the Bank would be entitled, in the event of a complete liquidation of the Bank, to a pro rata interest in the liquidation account prior to any payment to the stockholders of the Company. The liquidation account is reduced annually on September 30 to the extent that Eligible Account Holders and Supplemental Eligible Account Holders have reduced their qualifying deposits as of each anniversary date. At June 30, 2017 , the liquidation account had a balance of $13,300 . Subsequent increases in deposits do not restore such account holder’s interest in the liquidation account. The Bank may not pay cash dividends or make other capital distributions if the effect thereof would reduce its stockholders’ equity below the amount of the liquidation account.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies (a) Off-Balance Sheet Financial Instruments In the normal course of business, the Company enters into various transactions, which, in accordance with GAAP, are not included in its consolidated balance sheet. The Company enters into these transactions to meet the financing needs of its 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. The Company minimizes its exposure to losses under these commitments by subjecting them to credit approval and monitoring procedures. The Company enters into contractual commitments to extend credit, normally with fixed expiration dates or termination clauses, at specified rates and for specific purposes. Substantially all of the Company’s 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 the Company 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, the Company would be required to fund the commitment. The maximum potential amount of future payments the Company could be required to make is represented by the contractual amount of the commitment. If the commitment were funded, the Company would be entitled to seek recovery from the customer. Based on the Company’s credit risk exposure assessment of its 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 the Company’s involvement in particular classes of off-balance sheet financial instruments, are summarized as follows: June 30, December 31, 2017 2016 Loan origination commitments $ 271,108 $ 245,319 Unused lines of credit 916,824 968,288 Letters of credit 118,385 114,582 (b) Lease Commitments The Company leases certain premises and equipment under operating leases with terms expiring through January 2034. Included in occupancy and office operations expense was net rent expense of $2,138 and $2,422 during the three months ended June 30, 2017 and 2016 , respectively, and net rent expense of $4,388 and $5,721 during the six months ended June 30, 2017 and 2016 , respectively. Future minimum lease payments due under non-cancelable operating leases at June 30, 2017 were as follows: Remainder of 2017 $ 5,051 2018 9,702 2019 8,145 2020 7,229 2021 5,780 2022 4,640 2023 and thereafter 14,452 $ 54,999 (c) Litigation The Company and the Bank are involved in a number of judicial proceedings concerning matters arising from their business activities. These include routine legal proceedings arising in the ordinary course of business. These proceedings also include actions brought against the Company and the Bank with respect to corporate matters and transactions in which the Company and the Bank are or were involved; in particular, the Company has been named as a defendant in shareholder litigation arising out of the announcement of the Astoria Merger. While the Company continues to believe that such claims are without merit, it nonetheless is attempting to resolve them on a reasonable basis. In addition, the Company and the Bank may be requested to provide information or otherwise cooperate with government authorities in the conduct of investigations of other persons or industry groups. There can be no assurance as to the ultimate outcome of a legal proceeding; however, the Company and the Bank have generally denied liability in all significant litigation pending against them and intend to defend vigorously each case, other than matters that are determined appropriate to be settled. The Company 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.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2017
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 the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are 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 the Company’s creditworthiness, among other items, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. The Company’s 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 the Company’s 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; 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 usually coincide with the Company’s monthly and/or quarterly valuation process. Investment Securities Available for Sale The majority of the Company’s available for sale investment securities are reported at fair value utilizing Level 2 inputs. For these securities, the Company obtains 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. The Company reviews 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, the Company does not purchase investment securities that have a complicated structure. The Company’s 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, the Company validates, 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 June 30, 2017 , management does not believe any of our securities are OTTI; however, management reviews all of the Company’s 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 market terms (including interest rates and fees), the remaining terms of the agreements, and the creditworthiness of the counterparty as of the measurement date (Level 2 inputs). The Company’s derivatives consist of interest rate swaps. See Note 9. “Derivatives” for additional information. A summary of such investment securities available for sale and derivatives at June 30, 2017 and December 31, 2016 , respectively, were measured at estimated fair value on a recurring basis, is as follows: June 30, 2017 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets: Investment securities available for sale: Residential MBS (1) : Agency-backed $ 1,458,498 $ — $ 1,458,498 $ — CMO (2) /Other MBS 70,795 — 70,795 — Total residential MBS 1,529,293 — 1,529,293 — Other securities: Federal agencies 231,060 — 231,060 — Corporate 71,288 — 71,288 — State and municipal 264,231 264,231 — Total other securities 566,579 — 566,579 — Total available for sale securities 2,095,872 — 2,095,872 — Swaps 3,864 — 3,864 — Total assets $ 2,099,736 $ — $ 2,099,736 $ — Liabilities: Swaps $ (6,253 ) $ — $ (6,253 ) $ — Total liabilities $ (6,253 ) $ — $ (6,253 ) $ — (1) Residential MBS are debt securities whose cash flows come from residential 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 of the mortgage loans included in the pool are structured through a special purpose entity into various classes and tranches, which then issue 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. December 31, 2016 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets: Investment securities available for sale: Residential MBS: Agency-backed $ 1,193,481 $ — $ 1,193,481 $ — CMO/Other MBS 56,681 — 56,681 — Total residential MBS 1,250,162 — 1,250,162 — Federal agencies 193,979 — 193,979 — Corporate bonds 42,506 — 42,506 — State and municipal 240,770 240,770 — Total other securities 477,255 — 477,255 — Total available for sale securities 1,727,417 — 1,727,417 — Swaps 2,088 — 2,088 — Total assets $ 1,729,505 $ — $ 1,729,505 $ — Liabilities: Swaps $ (2,088 ) $ — $ (2,088 ) $ — Total liabilities $ (2,088 ) $ — $ (2,088 ) $ — 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. Impaired Loans Loans that meet certain criteria are evaluated individually for impairment. Generally, commercial loans less than $250 and residential mortgage and consumer loans less than $500 are evaluated for impairment on a pooled basis. 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 does not necessarily represent 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 of the underlying collateral is based on Level 3 inputs. Estimates of fair value used for collateral supporting commercial loans generally are based on assumptions not observable in the market place and are also based on Level 3 inputs. Impaired loans are remeasured at least quarterly and their carrying values are adjusted as needed. Impaired loans subject to non-recurring fair value measurements were $55,596 and $55,391 at June 30, 2017 and December 31, 2016 , respectively. Changes in fair value recognized as a charge-off on loans held by the Company were $225 and $0 for the six months ended June 30, 2017 and 2016 , respectively. When an impaired loan is collateral dependent, the Company charges-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 the classes with impaired loans at June 30, 2017 and December 31, 2016 , respectively, is set forth below: June 30, 2017 Fair value Level 1 inputs Level 2 inputs Level 3 inputs C&I $ 177 $ — $ — $ 177 Commercial real estate 5,986 — — 5,986 Total impaired loans measured at fair value $ 6,163 $ — $ — $ 6,163 December 31, 2016 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Commercial real estate $ 6,786 $ — $ — $ 6,786 Total impaired loans measured at fair value $ 6,786 $ — $ — $ 6,786 Mortgage Servicing Rights Mortgage servicing rights are carried at the lower of cost or estimated fair value. The fair value of mortgage servicing rights is estimated using a discounted cash flow model that is prepared by an independent third-party valuation provider and is performed on a quarterly basis. The significant assumptions, which are assumptions we believe other market participants would use, include the following: market discount rates, prepayment speeds, servicing revenue, the cost of servicing and loan default rates. The market discount rates and prepayment speeds are considered by management to be two of the most significant inputs into the determination of the estimated fair value. Due to the significant judgment involved, the determination of estimated fair value of mortgage servicing rights relies upon Level 3 inputs. At June 30, 2017 , the assumption for prepayment speeds ranged from 100 to 415 with a weighted average prepayment speed of 173 and the assumption for market discount rate ranged from 9.00% to 12.00% with a weighted average market discount rate of 10.29% . At December 31, 2016 , the assumption for prepayment speeds ranged from 100 to 555 with a weighted average prepayment speed of 174 and the assumption for market discount rate ranged from 8.50% to 11.50% with a weighted average market discount rate of 9.73% . The fair value of mortgage servicing rights at June 30, 2017 and December 31, 2016 was $999 and $1,024 , respectively. Other Real Estate Owned Other real estate owned is initially recorded at fair value less costs to sell when acquired, which establishes a new cost basis. When an asset is acquired, the excess of the recorded investment in the loan over the fair value less cost to sell is charged to the allowance for loan losses. 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. If the fair value declines, a write-down is recorded in other real estate owned expense, net on the income statement. Fair value is generally determined using appraisals or other indications of value based on comparable sales of similar properties or assumptions generally observable in the marketplace. Adjustments are routinely made in the appraisal process by independent appraisers for differences between comparable sales and income data available (in the case of income producing properties). The fair value is derived using Level 3 inputs. Appraisals are reviewed by the Company’s credit department and an external loan review consultant and verified by officers in the Company’s credit administration area. At June 30, 2017 and December 31, 2016 , appraisals were discounted by 22.0% , which considers estimated costs to sell and overall marketability of the properties. Other real estate owned subject to non-recurring fair value measurement were $10,198 and $13,619 at June 30, 2017 and December 31, 2016 , respectively. There were $1,293 and $582 of write-downs related to changes in fair value for other real estate owned held by the Company during the six months ended June 30, 2017 and June 30, 2016 , respectively. Fair Value of Financial Instruments Fair values for financial 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 FASB ASC Topic 825 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 June 30, 2017 : June 30, 2017 Carrying amount Level 1 inputs Level 2 inputs Level 3 inputs Financial assets: Cash and cash equivalents $ 282,167 $ 282,167 $ — $ — Securities available for sale 2,095,872 — 2,095,872 — Securities held to maturity 1,456,304 — 1,449,975 — Portfolio loans, net 10,162,166 — — 10,111,906 Accrued interest receivable on securities 18,497 — 18,497 — Accrued interest receivable on loans 29,050 — — 29,050 FHLB stock and FRB stock 160,241 — — — Swaps 3,864 — 3,864 — Financial liabilities: Non-maturity deposits (9,900,356 ) (9,900,356 ) — — Certificates of deposit (602,354 ) — (600,491 ) — FHLB borrowings (2,290,000 ) — (2,287,449 ) — Other borrowings (122,596 ) — (122,596 ) — Senior Notes (76,635 ) — (79,447 ) — Subordinated Notes (172,607 ) — (178,234 ) — Mortgage escrow funds (16,431 ) — (16,431 ) — Accrued interest payable on deposits (691 ) — (691 ) — Accrued interest payable on borrowings (7,106 ) — (7,106 ) — Swaps (6,253 ) — (6,253 ) — 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, 2016 : December 31, 2016 Carrying amount Level 1 inputs Level 2 inputs Level 3 inputs Financial assets: Cash and cash equivalents $ 293,646 $ 293,646 $ — $ — Securities available for sale 1,727,417 — 1,727,417 — Securities held to maturity 1,391,421 — 1,357,997 — Loans held for sale 41,889 — 41,889 — Portfolio loans, net 9,463,608 — — 9,461,469 Accrued interest receivable on securities 16,495 — 16,495 — Accrued interest receivable on loans 26,824 — — 26,824 FHLB stock and FRB stock 135,098 — — — Swaps 2,088 — 2,088 — Financial liabilities: Non-maturity deposits (9,484,505 ) (9,484,505 ) — — Certificates of deposit (583,754 ) — (582,811 ) — FHLB borrowings (1,791,000 ) — (1,788,676 ) — Other borrowings (16,642 ) — (16,642 ) — Senior Notes (76,469 ) — (79,283 ) — Subordinated Notes (172,501 ) — (169,813 ) — Mortgage escrow funds (13,572 ) — (13,572 ) — Accrued interest payable on deposits (663 ) — (663 ) — Accrued interest payable on borrowings (3,621 ) — (3,621 ) — Swaps (2,088 ) — (2,088 ) — The following paragraphs summarize the principal methods and assumptions used by the Company to estimate the fair value of the Company’s financial instruments: Loans The estimated fair value approximates the carrying value for variable-rate loans that reprice frequently with no significant change in credit risk. The fair value of fixed-rate loans and variable-rate loans which reprice on an infrequent basis is estimated by discounting future cash flows using the current interest rates at which similar loans with similar terms would be made to borrowers of similar credit quality. An overall valuation adjustment is made for specific credit risks, as well as general portfolio credit risk. FHLB Stock and FRB Stock The redeemable carrying amount of these securities with limited marketability approximates their fair value. Deposits and Mortgage Escrow Funds Deposits with no stated maturity (such as demand, money market and savings deposits) are assigned fair values equal to the carrying amounts payable on demand. Certificates of deposit and mortgage escrow funds are segregated by account type and original term, and fair values are estimated by discounting the contractual cash flows. The discount rate for each account grouping is equivalent to the current market rates for deposits of similar type and maturity. These fair values do not include the value of core deposit relationships that comprise a significant portion of the Company’s deposits. We believe that the Company’s core deposit relationships provide a relatively stable, low-cost funding source that has a substantial value separate from the deposit balances. FHLB Borrowings, Other Borrowings, Senior Notes and Subordinated Notes The estimated fair value approximates the carrying value for short-term borrowings. The fair value of long-term fixed-rate borrowings is estimated using quoted market prices, if available, or by discounting future cash flows using current interest rates for similar financial instruments. Accrued Interest Receivable/Payable The carrying amounts of accrued interest approximate fair value and are classified in accordance with the related instrument. Other Financial Instruments Other financial assets and liabilities listed in the tables above have estimated fair values that approximate their respective carrying amounts because the instruments are payable on demand or have short-term maturities and present relatively low credit risk and interest rate risk. The fair values of the Company’s off-balance sheet financial instruments described in the “Off-Balance Sheet Financial Instruments” section of Note 16. “Commitments and Contingencies” were estimated based on current market terms (including interest rates and fees), considering the remaining terms of the agreements and the creditworthiness of the counterparties. At June 30, 2017 and December 31, 2016 , the estimated fair value of these instruments approximated the related carrying amounts, which were not material.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Components of accumulated other comprehensive income (loss) (“AOCI”) were as follows as of the dates shown below: June 30, December 31, 2017 2016 Net unrealized holding loss on available for sale securities $ (20,998 ) $ (37,417 ) Related income tax benefit 8,294 14,780 Available for sale securities AOCI, net of tax (12,704 ) (22,637 ) Net unrealized holding loss on securities transferred to held to maturity (4,907 ) (5,395 ) Related income tax benefit 1,938 2,131 Securities transferred to held to maturity AOCI, net of tax (2,969 ) (3,264 ) Net unrealized holding loss on retirement plans (1,149 ) (1,213 ) Related income tax benefit 454 479 Retirement plans AOCI, net of tax (695 ) (734 ) AOCI $ (16,368 ) $ (26,635 ) The following table presents the changes in each component of AOCI for the three and six months ended June 30, 2017 and 2016 : Net unrealized holding gain (loss) on available for sale securities Net unrealized holding gain (loss) on securities transferred to held to maturity Net unrealized holding (loss) gain on retirement plans Total For the three months ended June 30, 2017 Balance beginning of the period $ (19,904 ) $ (3,117 ) $ (700 ) $ (23,721 ) Other comprehensive gain before reclassification 7,061 — — 7,061 Amounts reclassified from AOCI 139 148 5 292 Total other comprehensive income 7,200 148 5 7,353 Balance at end of period $ (12,704 ) $ (2,969 ) $ (695 ) $ (16,368 ) For the three months ended June 30, 2016 Balance beginning of the period $ 9,115 $ (4,200 ) $ (756 ) $ 4,159 Other comprehensive gain before reclassification 8,984 — — 8,984 Amounts reclassified from AOCI (2,708 ) 469 26 (2,213 ) Total other comprehensive income 6,276 469 26 6,771 Balance at end of period $ 15,391 $ (3,731 ) $ (730 ) $ 10,930 Location in income statement where reclassification from AOCI is included Net (loss) gain on sale of securities Interest income on securities Compensation and benefits 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 (loss) gain on retirement plans Total For the six months ended June 30, 2017 Balance beginning of the period $ (22,637 ) $ (3,264 ) $ (734 ) $ (26,635 ) Other comprehensive gain before reclassification 9,780 — — 9,780 Amounts reclassified from AOCI 153 295 39 487 Total other comprehensive income 9,933 295 39 10,267 Balance at end of period $ (12,704 ) $ (2,969 ) $ (695 ) $ (16,368 ) For the six months ended June 30, 2016 Balance beginning of the period $ (6,999 ) $ (4,155 ) $ (970 ) $ (12,124 ) Other comprehensive gain before reclassification 24,800 — — 24,800 Amounts reclassified from AOCI (2,410 ) 424 240 (1,746 ) Total other comprehensive income 22,390 424 240 23,054 Balance at end of period $ 15,391 $ (3,731 ) $ (730 ) $ 10,930 Location in income statement where reclassification from AOCI is included Net (loss) gain on sale of securities Interest income on securities Compensation and benefits expense

Recently Issued Accounting Stan

Recently Issued Accounting Standards Not Yet Adopted	6 Months Ended
	Jun. 30, 2017
Accounting Changes and Error Corrections [Abstract]
Recently Issued Accounting Standards Not Yet Adopted	Recently Issued Accounting Standards Not Yet Adopted ASU 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 implements a common revenue standard that clarifies the principles for recognizing revenue. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. This standard is effective for the Company on January 1, 2018. Our revenue is comprised of net interest income on financial assets and financial liabilities, which is explicitly excluded from the scope of ASU 2014-09, and non-interest income, which is subject to ASU 2014-09. Management continues to evaluate the potential impact of ASU 2014-09 on our consolidated financial statements, and at this time, we believe the adoption of this standard will impact disclosures related to some elements of our non-interest income; however, we anticipate the adoption of the standard will not have a significant impact to the Company’s financial position or results of operations. ASU 2016-01, “Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.” ASU 2016-01, among other things: (i) requires equity investments, with certain exceptions, to be measured at fair value with changes in fair value recognized in net income; (ii) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; (iii) eliminates the requirement for public business entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (iv) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (v) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (vi) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements; and (vii) clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale. ASU 2016-01 is effective for the Company on January 1, 2018 and is not expected to have a significant impact on our financial statements. ASU 2016-02, “Leases (Topic 842).” ASU 2016-02 amends existing lease accounting guidance, including the requirement to recognize most lease arrangements on the balance sheet. The adoption of this standard will result in the Company recognizing a right-of-use asset representing its rights to use the underlying asset for the lease term with an offsetting lease liability. ASU 2016-02 is effective for the company on January 1, 2019, with early adoption permitted and the adoption requires a modified retrospective approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company has not yet concluded whether it will adopt the standard prior to January 1, 2019; however, if the standard would have been effective at June 30, 2017, it would not have had an impact on any borrowings or financial covenants that are relevant to the Company. Management estimates that the impact to the Bank’s and the Company’s regulatory capital ratios would be a decrease of less than five basis points, which would be due to an increase in total assets and risk-weighted assets, given our lease arrangements for financial centers and other locations. ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 amends current guidance on the impairment of financial instruments. ASU 2016-13 adds an impairment model known as the current expected credit loss (“CECL”) model that is based on expected losses rather than incurred losses. For the Company, the CECL model will apply mainly to held-to-maturity investment securities, loans and loan commitments. ASU 2016-13 will be effective for the Company for fiscal years beginning after December 15, 2019, and the Company is permitted to early adopt the new guidance for fiscal years beginning after December 15, 2018. ASU 2016-13 will significantly change the accounting for credit impairments. The new guidance will require the Company to modify current processes and systems for establishing the allowance for loan losses and OTTI to ensure they comply with the requirements of the new standard. The Company engaged a nationally recognized accounting firm to assist management in performing an implementation readiness assessment. During the first quarter of 2017, the Company, in conjunction with our advisor, established a CECL program steering committee, identified significant work streams and created a CECL program project timeline. During the second quarter of 2017, the Company evaluated several third-party models in order to determine the CECL modeling approach that will be used for the Company’s loan portfolios. The Company is still in process of making this determination. ASU 2016-15, “Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments.” ASU 2016-15 provides guidance related to certain cash flow issues in order to reduce the current and potential future diversity in practice. ASU 2016-15 will be effective for the Company on January 1, 2018 and is not expected to have a significant impact on its financial statements. ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” ASU 2017-04 eliminates the second step in the goodwill impairment test which requires an entity to determine the implied fair value of the reporting unit’s goodwill. Instead, an entity should recognize an impairment loss if the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, with the impairment loss not to exceed the amount of goodwill allocated to the reporting unit. The standard is effective for the Company beginning January 1, 2020, with early adoption permitted for goodwill impairment tests performed after January 1, 2017. The Company expects to early adopt this standard in our next goodwill impairment test cycle in 2017. Management expects ASU 2017-04 will not have a significant impact on the Company’s financial statements. ASU 2017-08, “Premium Amortization on Purchased Callable Debt Securities.” ASU 2017-08 shortens the amortization period for the premium on certain purchased callable debt securities to the earliest call date. Today, entities generally amortize the premium over the contractual life of the security. The new guidance does not change the accounting for purchased callable debt securities held at a discount as discounts continue to be amortized to maturity. ASU No. 2017-08 is effective for interim and annual reporting periods beginning after December 15, 2018 and early adoption is permitted. The guidance includes a modified retrospective transition approach under which a cumulative-effect adjustment will be made to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. Management intends to adopt this standard effective January 1, 2018 and the impact of adoption will not be significant on our financial statements.

Pending Merger with Astoria Fin

Pending Merger with Astoria Financial Corporation	6 Months Ended
	Jun. 30, 2017
Subsequent Events [Abstract]
Pending Merger with Astoria Financial Corporation	Pending Merger with Astoria Financial Corporation On March 7, 2017 , the Company announced it had entered into a definitive merger agreement with Astoria Financial Corporation (NYSE: AF) (“Astoria”). In the definitive merger agreement, which is an agreement for a stock-for-stock transaction valued at approximately $2,233,873 based on the closing price of the Company’s common stock on March 6, 2017 , Astoria shareholders will receive a fixed ratio of 0.875 shares of Company common stock for each share of Astoria common stock. Upon closing, Company shareholders will own approximately 60% of stock in the combined company and Astoria shareholders will own approximately 40% . Pro forma information for the year ended December 31, 2016 was as follows: For the year ended December 31, 2016 Pro Forma Condensed Income Statement Information: Net interest income $ 818,907 Provision for loan losses 10,849 Income before income taxes 385,185 Net income 251,173 Pro Forma Condensed Combined Balance Sheet Information: Portfolio loans, net 19,530,795 Total assets 29,510,290 Deposits 18,956,004 Total stockholders’ equity 4,218,852 The transaction is expected to close in the fourth quarter of 2017. The transaction is subject to approval by the Office of the Comptroller of the Currency and the Federal Reserve Bank of New York and other customary closing conditions. The Company has engaged an independent third-party to assist management in estimating the fair value of the majority of the assets acquired and liabilities to be assumed.

Basis of Financial Statement 29

Basis of Financial Statement Presentation (Policies)	6 Months Ended
	Jun. 30, 2017
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 the Company follows 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 the Company’s 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, 2016 , included in our Annual Report on Form 10-K, as filed with the SEC on February 27, 2017 (the “2016 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.
Recently Issued Accounting Standards Not Yet Adopted	Adoption of New Accounting Standard Effective January 1, 2017, the Company adopted the provisions of Accounting Standard Update (“ASU”) 2016-09, “Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.” This standard requires that all income tax effects related to settlements of stock-based compensation awards be reported in earnings as an increase or decrease to income tax expense. The adoption of this standard reduced reported income tax expense by $64 in the second quarter of 2017, and $806 in the six months ended June 30, 2017. The Company also elected to recognize forfeitures of stock-based compensation awards as they occur, which did not have a material impact to the consolidated financial statements. Recently Issued Accounting Standards Not Yet Adopted ASU 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 implements a common revenue standard that clarifies the principles for recognizing revenue. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. This standard is effective for the Company on January 1, 2018. Our revenue is comprised of net interest income on financial assets and financial liabilities, which is explicitly excluded from the scope of ASU 2014-09, and non-interest income, which is subject to ASU 2014-09. Management continues to evaluate the potential impact of ASU 2014-09 on our consolidated financial statements, and at this time, we believe the adoption of this standard will impact disclosures related to some elements of our non-interest income; however, we anticipate the adoption of the standard will not have a significant impact to the Company’s financial position or results of operations. ASU 2016-01, “Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.” ASU 2016-01, among other things: (i) requires equity investments, with certain exceptions, to be measured at fair value with changes in fair value recognized in net income; (ii) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; (iii) eliminates the requirement for public business entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (iv) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (v) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (vi) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements; and (vii) clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale. ASU 2016-01 is effective for the Company on January 1, 2018 and is not expected to have a significant impact on our financial statements. ASU 2016-02, “Leases (Topic 842).” ASU 2016-02 amends existing lease accounting guidance, including the requirement to recognize most lease arrangements on the balance sheet. The adoption of this standard will result in the Company recognizing a right-of-use asset representing its rights to use the underlying asset for the lease term with an offsetting lease liability. ASU 2016-02 is effective for the company on January 1, 2019, with early adoption permitted and the adoption requires a modified retrospective approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company has not yet concluded whether it will adopt the standard prior to January 1, 2019; however, if the standard would have been effective at June 30, 2017, it would not have had an impact on any borrowings or financial covenants that are relevant to the Company. Management estimates that the impact to the Bank’s and the Company’s regulatory capital ratios would be a decrease of less than five basis points, which would be due to an increase in total assets and risk-weighted assets, given our lease arrangements for financial centers and other locations. ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 amends current guidance on the impairment of financial instruments. ASU 2016-13 adds an impairment model known as the current expected credit loss (“CECL”) model that is based on expected losses rather than incurred losses. For the Company, the CECL model will apply mainly to held-to-maturity investment securities, loans and loan commitments. ASU 2016-13 will be effective for the Company for fiscal years beginning after December 15, 2019, and the Company is permitted to early adopt the new guidance for fiscal years beginning after December 15, 2018. ASU 2016-13 will significantly change the accounting for credit impairments. The new guidance will require the Company to modify current processes and systems for establishing the allowance for loan losses and OTTI to ensure they comply with the requirements of the new standard. The Company engaged a nationally recognized accounting firm to assist management in performing an implementation readiness assessment. During the first quarter of 2017, the Company, in conjunction with our advisor, established a CECL program steering committee, identified significant work streams and created a CECL program project timeline. During the second quarter of 2017, the Company evaluated several third-party models in order to determine the CECL modeling approach that will be used for the Company’s loan portfolios. The Company is still in process of making this determination. ASU 2016-15, “Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments.” ASU 2016-15 provides guidance related to certain cash flow issues in order to reduce the current and potential future diversity in practice. ASU 2016-15 will be effective for the Company on January 1, 2018 and is not expected to have a significant impact on its financial statements. ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” ASU 2017-04 eliminates the second step in the goodwill impairment test which requires an entity to determine the implied fair value of the reporting unit’s goodwill. Instead, an entity should recognize an impairment loss if the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, with the impairment loss not to exceed the amount of goodwill allocated to the reporting unit. The standard is effective for the Company beginning January 1, 2020, with early adoption permitted for goodwill impairment tests performed after January 1, 2017. The Company expects to early adopt this standard in our next goodwill impairment test cycle in 2017. Management expects ASU 2017-04 will not have a significant impact on the Company’s financial statements. ASU 2017-08, “Premium Amortization on Purchased Callable Debt Securities.” ASU 2017-08 shortens the amortization period for the premium on certain purchased callable debt securities to the earliest call date. Today, entities generally amortize the premium over the contractual life of the security. The new guidance does not change the accounting for purchased callable debt securities held at a discount as discounts continue to be amortized to maturity. ASU No. 2017-08 is effective for interim and annual reporting periods beginning after December 15, 2018 and early adoption is permitted. The guidance includes a modified retrospective transition approach under which a cumulative-effect adjustment will be made to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. Management intends to adopt this standard effective January 1, 2018 and the impact of adoption will not be significant on our financial statements.
Fair Value Measurement	Derivatives The fair values of derivatives are based on valuation models using current market terms (including interest rates and fees), the remaining terms of the agreements, and the creditworthiness of the counterparty as of the measurement date (Level 2 inputs). The Company’s derivatives consist of interest rate swaps. See Note 9. “Derivatives” for additional information. 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. Impaired Loans Loans that meet certain criteria are evaluated individually for impairment. Generally, commercial loans less than $250 and residential mortgage and consumer loans less than $500 are evaluated for impairment on a pooled basis. 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 does not necessarily represent 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 of the underlying collateral is based on Level 3 inputs. Estimates of fair value used for collateral supporting commercial loans generally are based on assumptions not observable in the market place and are also based on Level 3 inputs. Impaired loans are remeasured at least quarterly and their carrying values are adjusted as needed. The following paragraphs summarize the principal methods and assumptions used by the Company to estimate the fair value of the Company’s financial instruments: Loans The estimated fair value approximates the carrying value for variable-rate loans that reprice frequently with no significant change in credit risk. The fair value of fixed-rate loans and variable-rate loans which reprice on an infrequent basis is estimated by discounting future cash flows using the current interest rates at which similar loans with similar terms would be made to borrowers of similar credit quality. An overall valuation adjustment is made for specific credit risks, as well as general portfolio credit risk. FHLB Stock and FRB Stock The redeemable carrying amount of these securities with limited marketability approximates their fair value. Deposits and Mortgage Escrow Funds Deposits with no stated maturity (such as demand, money market and savings deposits) are assigned fair values equal to the carrying amounts payable on demand. Certificates of deposit and mortgage escrow funds are segregated by account type and original term, and fair values are estimated by discounting the contractual cash flows. The discount rate for each account grouping is equivalent to the current market rates for deposits of similar type and maturity. These fair values do not include the value of core deposit relationships that comprise a significant portion of the Company’s deposits. We believe that the Company’s core deposit relationships provide a relatively stable, low-cost funding source that has a substantial value separate from the deposit balances. FHLB Borrowings, Other Borrowings, Senior Notes and Subordinated Notes The estimated fair value approximates the carrying value for short-term borrowings. The fair value of long-term fixed-rate borrowings is estimated using quoted market prices, if available, or by discounting future cash flows using current interest rates for similar financial instruments. Accrued Interest Receivable/Payable The carrying amounts of accrued interest approximate fair value and are classified in accordance with the related instrument. Other Financial Instruments Other financial assets and liabilities listed in the tables above have estimated fair values that approximate their respective carrying amounts because the instruments are payable on demand or have short-term maturities and present relatively low credit risk and interest rate risk. Mortgage Servicing Rights Mortgage servicing rights are carried at the lower of cost or estimated fair value. The fair value of mortgage servicing rights is estimated using a discounted cash flow model that is prepared by an independent third-party valuation provider and is performed on a quarterly basis. The significant assumptions, which are assumptions we believe other market participants would use, include the following: market discount rates, prepayment speeds, servicing revenue, the cost of servicing and loan default rates. The market discount rates and prepayment speeds are considered by management to be two of the most significant inputs into the determination of the estimated fair value. Due to the significant judgment involved, the determination of estimated fair value of mortgage servicing rights relies upon Level 3 inputs. When an impaired loan is collateral dependent, the Company charges-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. Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are 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 the Company’s creditworthiness, among other items, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. The Company’s 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 the Company’s 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; 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 usually coincide with the Company’s monthly and/or quarterly valuation process. Investment Securities Available for Sale The majority of the Company’s available for sale investment securities are reported at fair value utilizing Level 2 inputs. For these securities, the Company obtains 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. The Company reviews 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, the Company does not purchase investment securities that have a complicated structure. The Company’s 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, the Company validates, 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. Other Real Estate Owned Other real estate owned is initially recorded at fair value less costs to sell when acquired, which establishes a new cost basis. When an asset is acquired, the excess of the recorded investment in the loan over the fair value less cost to sell is charged to the allowance for loan losses. 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. If the fair value declines, a write-down is recorded in other real estate owned expense, net on the income statement. Fair value is generally determined using appraisals or other indications of value based on comparable sales of similar properties or assumptions generally observable in the marketplace. Adjustments are routinely made in the appraisal process by independent appraisers for differences between comparable sales and income data available (in the case of income producing properties). The fair value is derived using Level 3 inputs. Appraisals are reviewed by the Company’s credit department and an external loan review consultant and verified by officers in the Company’s credit administration area. Fair Value of Financial Instruments Fair values for financial 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 FASB ASC Topic 825 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.

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2017
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 June 30, 2017 and December 31, 2016 is presented below. The term “MBS” refers to mortgage-backed securities and the term “CMO” refers to collateralized mortgage obligations. Both of these terms are further defined in Note 17. “Fair Value Measurements”. June 30, 2017 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 $ 1,471,034 $ 2,442 $ (14,978 ) $ 1,458,498 $ 283,258 $ 1,848 $ (2,534 ) $ 282,572 CMO/Other MBS 71,611 44 (860 ) 70,795 36,814 63 (497 ) 36,380 Total residential MBS 1,542,645 2,486 (15,838 ) 1,529,293 320,072 1,911 (3,031 ) 318,952 Other securities: Federal agencies 238,826 — (7,766 ) 231,060 58,422 1,721 — 60,143 Corporate 71,367 731 (810 ) 71,288 30,000 706 — 30,706 State and municipal 264,032 2,057 (1,858 ) 264,231 1,032,060 7,460 (15,281 ) 1,024,239 Other — — — — 15,750 185 — 15,935 Total other securities 574,225 2,788 (10,434 ) 566,579 1,136,232 10,072 (15,281 ) 1,131,023 Total securities $ 2,116,870 $ 5,274 $ (26,272 ) $ 2,095,872 $ 1,456,304 $ 11,983 $ (18,312 ) $ 1,449,975 December 31, 2016 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 $ 1,213,733 $ 569 $ (20,821 ) $ 1,193,481 $ 277,539 $ 1,353 $ (3,625 ) $ 275,267 CMO/Other MBS 57,563 44 (926 ) 56,681 40,594 74 (572 ) 40,096 Total residential MBS 1,271,296 613 (21,747 ) 1,250,162 318,133 1,427 (4,197 ) 315,363 Other securities: Federal agencies 204,770 2 (10,793 ) 193,979 58,200 1,392 — 59,592 Corporate 43,464 150 (1,108 ) 42,506 35,048 431 (11 ) 35,468 State and municipal 245,304 739 (5,273 ) 240,770 974,290 3,571 (36,232 ) 941,629 Other — — — — 5,750 195 — 5,945 Total other securities 493,538 891 (17,174 ) 477,255 1,073,288 5,589 (36,243 ) 1,042,634 Total securities $ 1,764,834 $ 1,504 $ (38,921 ) $ 1,727,417 $ 1,391,421 $ 7,016 $ (40,440 ) $ 1,357,997
Summary of securities held-to-maturity	A summary of amortized cost and estimated fair value of securities as of June 30, 2017 and December 31, 2016 is presented below. The term “MBS” refers to mortgage-backed securities and the term “CMO” refers to collateralized mortgage obligations. Both of these terms are further defined in Note 17. “Fair Value Measurements”. June 30, 2017 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 $ 1,471,034 $ 2,442 $ (14,978 ) $ 1,458,498 $ 283,258 $ 1,848 $ (2,534 ) $ 282,572 CMO/Other MBS 71,611 44 (860 ) 70,795 36,814 63 (497 ) 36,380 Total residential MBS 1,542,645 2,486 (15,838 ) 1,529,293 320,072 1,911 (3,031 ) 318,952 Other securities: Federal agencies 238,826 — (7,766 ) 231,060 58,422 1,721 — 60,143 Corporate 71,367 731 (810 ) 71,288 30,000 706 — 30,706 State and municipal 264,032 2,057 (1,858 ) 264,231 1,032,060 7,460 (15,281 ) 1,024,239 Other — — — — 15,750 185 — 15,935 Total other securities 574,225 2,788 (10,434 ) 566,579 1,136,232 10,072 (15,281 ) 1,131,023 Total securities $ 2,116,870 $ 5,274 $ (26,272 ) $ 2,095,872 $ 1,456,304 $ 11,983 $ (18,312 ) $ 1,449,975 December 31, 2016 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 $ 1,213,733 $ 569 $ (20,821 ) $ 1,193,481 $ 277,539 $ 1,353 $ (3,625 ) $ 275,267 CMO/Other MBS 57,563 44 (926 ) 56,681 40,594 74 (572 ) 40,096 Total residential MBS 1,271,296 613 (21,747 ) 1,250,162 318,133 1,427 (4,197 ) 315,363 Other securities: Federal agencies 204,770 2 (10,793 ) 193,979 58,200 1,392 — 59,592 Corporate 43,464 150 (1,108 ) 42,506 35,048 431 (11 ) 35,468 State and municipal 245,304 739 (5,273 ) 240,770 974,290 3,571 (36,232 ) 941,629 Other — — — — 5,750 195 — 5,945 Total other securities 493,538 891 (17,174 ) 477,255 1,073,288 5,589 (36,243 ) 1,042,634 Total securities $ 1,764,834 $ 1,504 $ (38,921 ) $ 1,727,417 $ 1,391,421 $ 7,016 $ (40,440 ) $ 1,357,997
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 June 30, 2017 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. June 30, 2017 Available for sale Held to maturity Amortized cost Fair value Amortized cost Fair value Remaining period to contractual maturity: One year or less $ 12,668 $ 12,704 $ 18,347 $ 18,508 One to five years 160,069 159,861 74,070 75,768 Five to ten years 268,533 263,837 242,409 247,068 Greater than ten years 132,955 130,177 801,406 789,679 Total securities with a stated maturity date 574,225 566,579 1,136,232 1,131,023 Residential MBS 1,542,645 1,529,293 320,072 318,952 Total securities $ 2,116,870 $ 2,095,872 $ 1,456,304 $ 1,449,975
Sale of securities	Sales of securities for the periods indicated below were as follows: For the three months ended For the six months ended June 30, June 30, 2017 2016 2017 2016 Available for sale: Proceeds from sales $ 10,000 $ 283,126 $ 10,232 $ 558,484 Gross realized gains — 4,834 6 6,395 Gross realized losses (230 ) (360 ) (259 ) (2,204 ) Income tax (benefit) expense on realized net (losses) gains (75 ) 1,466 (82 ) 1,394
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 June 30, 2017 Residential MBS: Agency-backed $ 1,158,592 $ (14,970 ) $ 747 $ (8 ) $ 1,159,339 $ (14,978 ) CMO/Other MBS 37,566 (477 ) 12,972 (383 ) 50,538 (860 ) Total residential MBS 1,196,158 (15,447 ) 13,719 (391 ) 1,209,877 (15,838 ) Other securities: Federal agencies 210,780 (6,497 ) 20,280 (1,269 ) 231,060 (7,766 ) Corporate 17,702 (114 ) 15,182 (696 ) 32,884 (810 ) State and municipal 116,747 (1,769 ) 4,167 (89 ) 120,914 (1,858 ) Total other securities 345,229 (8,380 ) 39,629 (2,054 ) 384,858 (10,434 ) Total $ 1,541,387 $ (23,827 ) $ 53,348 $ (2,445 ) $ 1,594,735 $ (26,272 ) December 31, 2016 Residential MBS: Agency-backed $ 1,101,641 $ (20,816 ) $ 686 $ (5 ) $ 1,102,327 $ (20,821 ) CMO/Other MBS 38,841 (506 ) 15,239 (420 ) 54,080 (926 ) Total residential MBS 1,140,482 (21,322 ) 15,925 (425 ) 1,156,407 (21,747 ) Other securities: Federal agencies 185,504 (10,793 ) 4 — 185,508 (10,793 ) Corporate 10,399 (137 ) 14,942 (971 ) 25,341 (1,108 ) State and municipal 173,062 (5,196 ) 3,733 (77 ) 176,795 (5,273 ) Total other securities 368,965 (16,126 ) 18,679 (1,048 ) 387,644 (17,174 ) Total securities $ 1,509,447 $ (37,448 ) $ 34,604 $ (1,473 ) $ 1,544,051 $ (38,921 )
Securities held to maturity with unrealized losses, by length of time in continuous unrealized loss position	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 June 30, 2017 Residential MBS: Agency-backed $ 167,514 $ (2,302 ) $ 5,156 $ (232 ) $ 172,670 $ (2,534 ) CMO/Other MBS 31,595 (495 ) 106 (2 ) 31,701 (497 ) Total residential MBS 199,109 (2,797 ) 5,262 (234 ) 204,371 (3,031 ) Other securities: State and municipal 621,730 (13,682 ) 36,356 (1,599 ) 658,086 (15,281 ) Total other securities 621,730 (13,682 ) 36,356 (1,599 ) 658,086 (15,281 ) Total $ 820,839 $ (16,479 ) $ 41,618 $ (1,833 ) $ 862,457 $ (18,312 ) December 31, 2016 Residential MBS: Agency-backed $ 185,116 $ (3,623 ) $ 213 $ (2 ) $ 185,329 $ (3,625 ) CMO/Other MBS 34,786 (572 ) — — 34,786 (572 ) Total residential MBS 219,902 (4,195 ) 213 (2 ) 220,115 (4,197 ) Other securities: Corporate — — 5,037 (11 ) 5,037 (11 ) State and municipal 758,690 (36,169 ) 2,816 (63 ) 761,506 (36,232 ) Total other securities 758,690 (36,169 ) 7,853 (74 ) 766,543 (36,243 ) Total securities $ 978,592 $ (40,364 ) $ 8,066 $ (76 ) $ 986,658 $ (40,440 )
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: June 30, December 31, 2017 2016 Available for sale securities pledged for borrowings, at fair value $ 260,387 $ 67,599 Available for sale securities pledged for municipal deposits, at fair value 334,771 398,961 Available for sale securities pledged for customer back-to-back swaps, at fair value — 126 Held to maturity securities pledged for borrowings, at amortized cost 116,847 55,343 Held to maturity securities pledged for municipal deposits, at amortized cost 868,046 958,246 Total securities pledged $ 1,580,051 $ 1,480,275

Portfolio Loans (Tables)

Portfolio Loans (Tables)	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Components of loan portfolio excluding loans held for sale	The composition of the Company’s loan portfolio, excluding loans held for sale, was the following for the periods presented below: June 30, December 31, 2017 2016 Commercial: Commercial and industrial (“C&I”): Traditional C&I $ 1,602,659 $ 1,404,774 Asset-based lending 723,055 741,942 Payroll finance 239,618 255,549 Warehouse lending 687,701 616,946 Factored receivables 195,690 214,242 Equipment financing 704,750 589,315 Public sector finance 466,316 349,182 Total C&I 4,619,789 4,171,950 Commercial mortgage: Commercial real estate 3,367,888 3,162,942 Multi-family 1,063,097 981,076 Acquisition, development & construction (“ADC”) 223,713 230,086 Total commercial mortgage 4,654,698 4,374,104 Total commercial 9,274,487 8,546,054 Residential mortgage 692,562 697,108 Consumer 265,268 284,068 Total portfolio loans 10,232,317 9,527,230 Allowance for loan losses (70,151 ) (63,622 ) Total portfolio loans, net $ 10,162,166 $ 9,463,608
Schedule of amounts and status of loans and TDRs	The following tables set forth the amounts and status of the Company’s loans, troubled debt restructurings (“TDRs”) and non-performing loans at June 30, 2017 and December 31, 2016 : June 30, 2017 Current 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 1,575,384 $ 1,093 $ 316 $ 39 $ 25,827 $ 1,602,659 Asset-based lending 723,055 — — — — 723,055 Payroll finance 238,813 10 — 577 218 239,618 Warehouse lending 687,701 — — — — 687,701 Factored receivables 195,499 — — — 191 195,690 Equipment financing 696,529 3,617 1,398 — 3,206 704,750 Public sector finance 466,316 — — — — 466,316 Commercial real estate 3,344,334 1,439 234 189 21,692 3,367,888 Multi-family 1,060,837 — 2,200 — 60 1,063,097 ADC 222,449 — — — 1,264 223,713 Residential mortgage 677,836 1,900 970 129 11,727 692,562 Consumer 257,143 806 1,087 1 6,231 265,268 Total portfolio loans $ 10,145,896 $ 8,865 $ 6,205 $ 935 $ 70,416 $ 10,232,317 Total TDRs included above $ 14,029 $ — $ — $ — $ 2,401 $ 16,430 Non-performing loans: Loans 90+ days past due and still accruing $ 935 Non-accrual loans 70,416 Total non-performing loans $ 71,351 December 31, 2016 Current 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 1,376,181 $ 835 $ 817 $ 555 $ 26,386 $ 1,404,774 Asset-based lending 741,942 — — — — 741,942 Payroll finance 254,715 — 14 621 199 255,549 Warehouse lending 616,946 — — — — 616,946 Factored receivables 213,624 — — — 618 214,242 Equipment financing 583,835 2,142 1,092 — 2,246 589,315 Public sector finance 349,182 — — — — 349,182 Commercial real estate 3,140,561 967 — 406 21,008 3,162,942 Multi-family 981,005 — — — 71 981,076 ADC 224,817 — — — 5,269 230,086 Residential mortgage 675,750 5,509 951 108 14,790 697,108 Consumer 274,719 2,423 350 — 6,576 284,068 Total portfolio loans $ 9,433,277 $ 11,876 $ 3,224 $ 1,690 $ 77,163 $ 9,527,230 Total TDRs included above $ 11,032 $ 253 $ — $ — $ 1,989 $ 13,274 Non-performing loans: Loans 90+ days past due and still accruing $ 1,690 Non-accrual loans 77,163 Total non-performing loans $ 78,853
Schedule of additional analysis of non-accrual loans	The following table provides additional analysis of the Company’s non-accrual loans at June 30, 2017 and December 31, 2016 : June 30, 2017 December 31, 2016 Recorded investment non-accrual loans Recorded investment PCI (1) non-accrual loans Recorded investment total non-accrual loans Unpaid principal balance non-accrual loans Recorded investment non-accrual loans Recorded investment PCI (1) non-accrual loans Recorded investment total non-accrual loans Unpaid principal balance non-accrual loans Traditional C&I $ 21,877 $ 3,950 $ 25,827 $ 26,419 $ 22,338 $ 4,048 $ 26,386 $ 26,386 Payroll finance 218 — 218 — 199 — 199 199 Factored receivables 191 — 191 — 618 — 618 618 Equipment financing 3,206 — 3,206 3,206 2,246 — 2,246 2,246 Commercial real estate 16,135 5,557 21,692 27,006 15,063 5,945 21,008 25,619 Multi-family 60 — 60 67 71 — 71 71 ADC 1,264 — 1,264 1,411 5,269 — 5,269 5,398 Residential mortgage 10,923 804 11,727 14,345 13,399 1,391 14,790 18,190 Consumer 5,400 831 6,231 7,780 5,719 857 6,576 7,865 Total $ 59,274 $ 11,142 $ 70,416 $ 80,234 $ 64,922 $ 12,241 $ 77,163 $ 86,592 (1) The Company 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”).
Impaired financing receivables	The following table sets forth loans evaluated for impairment by segment and the allowance evaluated by segment at June 30, 2017 : 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 $ 24,870 $ 1,564,147 $ 13,642 $ 1,602,659 $ — $ 15,506 $ 15,506 Asset-based lending — 707,560 15,495 723,055 — 2,582 2,582 Payroll finance 321 239,297 — 239,618 — 1,287 1,287 Warehouse lending — 687,701 — 687,701 — 2,435 2,435 Factored receivables — 195,690 — 195,690 — 1,151 1,151 Equipment financing 5,523 699,227 — 704,750 — 5,735 5,735 Public sector finance — 466,316 — 466,316 — 1,887 1,887 Commercial real estate 16,155 3,310,026 41,707 3,367,888 — 25,181 25,181 Multi-family — 1,058,771 4,326 1,063,097 — 5,028 5,028 ADC 6,409 212,548 4,756 223,713 — 920 920 Residential mortgage 821 690,772 969 692,562 — 5,124 5,124 Consumer 1,497 262,181 1,590 265,268 — 3,315 3,315 Total portfolio loans $ 55,596 $ 10,094,236 $ 82,485 $ 10,232,317 $ — $ 70,151 $ 70,151 The following table sets forth loans evaluated for impairment by segment and the allowance evaluated by segment at December 31, 2016 : 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 $ 25,221 $ 1,365,466 $ 14,087 $ 1,404,774 $ — $ 12,864 $ 12,864 Asset-based lending — 724,247 17,695 741,942 — 3,316 3,316 Payroll finance 570 254,979 — 255,549 — 951 951 Warehouse lending — 616,946 — 616,946 — 1,563 1,563 Factored receivables — 214,242 — 214,242 — 1,669 1,669 Equipment financing 1,413 587,902 — 589,315 — 5,039 5,039 Public sector finance — 349,182 — 349,182 — 1,062 1,062 Commercial real estate 14,853 3,104,057 44,032 3,162,942 — 20,466 20,466 Multi-family — 976,710 4,366 981,076 — 4,991 4,991 ADC 9,025 216,094 4,967 230,086 — 1,931 1,931 Residential mortgage 2,545 692,396 2,167 697,108 — 5,864 5,864 Consumer 1,764 280,710 1,594 284,068 — 3,906 3,906 Total portfolio loans $ 55,391 $ 9,382,931 $ 88,908 $ 9,527,230 $ — $ 63,622 $ 63,622 The following table presents loans individually evaluated for impairment, excluding PCI loans, by segment of loans at June 30, 2017 and December 31, 2016 : June 30, 2017 December 31, 2016 Unpaid principal balance Recorded investment Unpaid principal balance Recorded investment Loans with no related allowance recorded: Traditional C&I $ 25,251 $ 24,870 $ 25,221 $ 25,221 Payroll finance 321 321 570 570 Equipment financing 5,523 5,523 1,413 1,413 Commercial real estate 19,702 16,155 16,365 14,853 ADC 6,671 6,409 9,025 9,025 Residential mortgage 821 821 2,545 2,545 Consumer 1,497 1,497 1,764 1,764 Total $ 59,786 $ 55,596 $ 56,903 $ 55,391 At June 30, 2017 and December 31, 2016 there were no asset-based lending, warehouse lending, factored receivables, public sector finance loans or multi-family loans that were individually evaluated for impairment. The Company’s 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 the Company’s recorded investment. As a result, there were no impaired loans with an allowance recorded at June 30, 2017 or December 31, 2016 . The following tables present the average recorded investment and interest income recognized related to loans individually evaluated for impairment by segment for the three months ended June 30, 2017 and June 30, 2016 : For the three months ended June 30, 2017 June 30, 2016 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 $ 24,922 $ 7 $ — $ 27,033 $ 6 $ — Payroll finance 160 — — — — — Factored receivables — — — 264 — — Equipment financing 3,569 — — 1,528 — — Commercial real estate 14,206 84 — 14,536 34 — Multi-family — — — 867 — — ADC 6,180 54 — 8,558 56 — Residential mortgage 668 — — 515 — — Consumer 1,497 — — 1,497 — — Total $ 51,202 $ 145 $ — $ 54,798 $ 96 $ — For the six months ended June 30, 2017 June 30, 2016 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 $ 24,897 $ 15 $ — $ 20,779 $ 15 $ — Payroll finance 107 — — — — — Factored receivables — — — 132 — — Equipment financing 2,767 — — 1,195 — — Commercial real estate 13,263 173 — 13,456 104 — Multi-family — — — 875 19 — ADC 5,811 119 — 8,595 115 — Residential mortgage 617 — — 515 — — Consumer 1,497 — — 1,123 — — Total $ 48,959 $ 307 $ — $ 46,670 $ 253 $ —
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 six months ended June 30, 2017 and 2016 : For the three months ended June 30, For the six months ended June 30, 2017 2016 2017 2016 Balance at beginning of period $ 10,733 $ 12,522 $ 11,117 $ 11,211 Balances acquired in the NSBC Acquisition — — — 2,200 Accretion of income (1,001 ) (1,124 ) (2,200 ) (2,279 ) Disposals 1,145 — 1,960 — Reclassification from non-accretable difference — (91 ) — 175 Balance at end of period $ 10,877 $ 11,307 $ 10,877 $ 11,307
Troubled debt restructurings	The following table presents loans by segment modified as TDRs that occurred during the first six months of 2017 and 2016 : June 30, 2017 June 30, 2016 Recorded investment Recorded investment Number Pre- modification Post- modification Number Pre- modification Post- modification Equipment financing 2 $ 3,088 $ 3,088 — $ — $ — Commercial real estate 2 1,724 1,724 — — — ADC 1 797 797 — — — Residential mortgage 2 552 551 1 469 469 Total TDRs 7 $ 6,161 $ 6,160 1 $ 469 $ 469 The following tables set forth the amounts and past due status of the Company’s TDRs at June 30, 2017 and December 31, 2016 : June 30, 2017 Current loans 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 569 $ — $ — $ — $ — $ 569 Equipment financing 2,938 — — — — 2,938 Commercial real estate 2,958 — — — 125 3,083 ADC 5,150 — — — 921 6,071 Residential mortgage 2,371 — — — 1,355 3,726 Consumer 43 — — — — 43 Total $ 14,029 $ — $ — $ — $ 2,401 $ 16,430 December 31, 2016 Current loans 30-59 days past due 60-89 days past due 90+ days past due Non- accrual Total Traditional C&I $ 572 $ — $ — $ — $ 128 $ 700 Equipment financing — — — — 29 29 Commercial real estate 2,443 253 — — — 2,696 ADC 5,962 — — — 458 6,420 Residential mortgage 2,055 — — — 1,374 3,429 Total $ 11,032 $ 253 $ — $ — $ 1,989 $ 13,274

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Allowance for loan losses activity	Activity in the allowance for loan losses for the three and six months ended June 30, 2017 and 2016 is summarized below: For the three months ended June 30, 2017 Beginning balance Charge-offs Recoveries Net charge-offs Provision / (reversal of) Ending balance Traditional C&I $ 14,441 $ (164 ) $ 523 $ 359 $ 706 $ 15,506 Asset-based lending 3,353 — 1 1 (772 ) 2,582 Payroll finance 1,155 — — — 132 1,287 Warehouse lending 1,227 — — — 1,208 2,435 Factored receivables 1,322 (12 ) 2 (10 ) (161 ) 1,151 Equipment financing 6,039 (610 ) 146 (464 ) 160 5,735 Public sector finance 1,249 — — — 638 1,887 Commercial real estate 23,438 (944 ) 98 (846 ) 2,589 25,181 Multi-family 4,102 — — — 926 5,028 ADC 1,170 (22 ) 133 111 (361 ) 920 Residential mortgage 5,715 (120 ) 10 (110 ) (481 ) 5,124 Consumer 3,728 (417 ) 88 (329 ) (84 ) 3,315 Total allowance for loan losses $ 66,939 $ (2,289 ) $ 1,001 $ (1,288 ) $ 4,500 $ 70,151 Annualized net charge-offs to average loans outstanding: 0.05 % For the three months ended June 30, 2016 Beginning balance Charge-offs Recoveries Net charge-offs Provision / (reversal of) Ending balance Traditional C&I $ 10,905 $ (429 ) $ 153 $ (276 ) $ 428 $ 11,057 Asset-based lending 2,809 — 46 46 425 3,280 Payroll finance 1,546 (28 ) 28 — (381 ) 1,165 Warehouse lending 520 — — — 132 652 Factored receivables 1,407 (792 ) 17 (775 ) 953 1,585 Equipment financing 5,393 (572 ) 102 (470 ) 423 5,346 Public sector finance 555 — — — 339 894 Commercial real estate 15,770 (100 ) 53 (47 ) 1,800 17,523 Multi-family 2,996 (18 ) — (18 ) 485 3,463 ADC 2,157 — 104 104 (219 ) 2,042 Residential mortgage 4,850 (209 ) 1 (208 ) 233 4,875 Consumer 4,106 (532 ) 27 (505 ) 382 3,983 Total allowance for loan losses $ 53,014 $ (2,680 ) $ 531 $ (2,149 ) $ 5,000 $ 55,865 Annualized net charge-offs to average loans outstanding: 0.10 % For the six months ended June 30, 2017 Beginning Charge-offs Recoveries Net Provision/ (reversal of) Ending balance Traditional C&I $ 12,864 $ (851 ) $ 662 $ (189 ) $ 2,831 $ 15,506 Asset-based lending 3,316 — 4 4 (738 ) 2,582 Payroll finance 951 — — — 336 1,287 Warehouse lending 1,563 — — — 872 2,435 Factored receivables 1,669 (309 ) 18 (291 ) (227 ) 1,151 Equipment financing 5,039 (1,080 ) 286 (794 ) 1,490 5,735 Public sector finance 1,062 — — 825 1,887 Commercial real estate 20,466 (1,026 ) 100 (926 ) 5,641 25,181 Multi-family 4,991 — — — 37 5,028 ADC 1,931 (22 ) 269 247 (1,258 ) 920 Residential mortgage 5,864 (279 ) 159 (120 ) (620 ) 5,124 Consumer 3,906 (531 ) 129 (402 ) (189 ) 3,315 Total allowance for loan losses $ 63,622 $ (4,098 ) $ 1,627 $ (2,471 ) $ 9,000 $ 70,151 Annualized net charge-offs to average loans outstanding: 0.03 % For the six months ended June 30, 2016 Beginning Charge-offs Recoveries Net Provision/ (reversal of) Ending balance Traditional C&I $ 9,922 $ (918 ) $ 482 $ (436 ) $ 1,571 $ 11,057 Asset-based lending 2,793 — 46 46 441 3,280 Payroll finance 1,936 (28 ) 32 4 (775 ) 1,165 Warehouse lending 589 — — — 63 652 Factored receivables 1,457 (873 ) 41 (832 ) 960 1,585 Equipment financing 4,925 (1,029 ) 210 (819 ) 1,240 5,346 Public sector finance 547 — — — 347 894 Commercial real estate 13,861 (104 ) 74 (30 ) 3,692 17,523 Multi-family 2,741 (18 ) 2 (16 ) 738 3,463 ADC 2,009 — 104 104 (71 ) 2,042 Residential mortgage 5,007 (433 ) 29 (404 ) 272 4,875 Consumer 4,358 (1,043 ) 146 (897 ) 522 3,983 Total allowance for loan losses $ 50,145 $ (4,446 ) $ 1,166 $ (3,280 ) $ 9,000 $ 55,865 Annualized net charge-offs to average loans outstanding: 0.08 %
Financing receivable credit quality indicators	As of June 30, 2017 and December 31, 2016 , the risk category of gross loans by segment was as follows: June 30, 2017 December 31, 2016 Special mention Substandard Doubtful Special mention Substandard Doubtful Traditional C&I $ 18,713 $ 40,096 $ 894 $ 12,125 $ 28,977 $ 442 Asset-based lending 10,937 — — 35,373 — — Payroll finance 15,113 2,342 — — 820 — Factored receivables 633 191 — 185 433 — Equipment financing 6,763 3,869 — 2,128 3,397 — Commercial real estate 44,268 26,787 — 39,190 29,463 — Multi-family 3,541 642 — 7,072 658 — ADC 924 4,414 — 6,899 8,870 — Residential mortgage 970 12,749 — 951 15,796 — Consumer 1,134 6,386 1 646 6,738 — Total $ 102,996 $ 97,476 $ 895 $ 104,569 $ 95,152 $ 442

Goodwill and Other Intangible33

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2017
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: June 30, December 31, 2017 2016 Goodwill $ 696,600 $ 696,600 Other intangible assets: Core deposits $ 34,161 $ 37,455 Customer lists 6,769 7,683 Non-compete agreements 417 625 Trade name 20,500 20,500 Fair value of below market leases 37 90 Total $ 61,884 $ 66,353
Future amortization expense	The estimated aggregate future amortization expense for intangible assets remaining as of June 30, 2017 was as follows: Amortization expense Remainder of 2017 $ 4,369 2018 7,285 2019 6,074 2020 5,428 2021 5,022 2022 4,522 Thereafter 8,684 Total $ 41,384

Deposits (Tables)

Deposits (Tables)	6 Months Ended
	Jun. 30, 2017
Deposits [Abstract]
Summary of major classification of deposits	Deposit balances at June 30, 2017 and December 31, 2016 were as follows: June 30, December 31, 2017 2016 Non-interest bearing demand $ 3,311,860 $ 3,239,332 Interest bearing demand 2,059,940 2,220,456 Savings 795,899 747,031 Money market 3,732,657 3,277,686 Certificates of deposit 602,354 583,754 Total deposits $ 10,502,710 $ 10,068,259
List of Company's Brokered deposits	Brokered deposits at June 30, 2017 and December 31, 2016 were as follows: June 30, December 31, 2017 2016 Interest bearing demand $ 46,228 $ 426,437 Savings — 5,560 Money market 473,268 246,572 Money market - reciprocal brokered deposits 148,736 153,060 CDARs 1 and ICS 2 one way 217,271 — Total brokered deposits $ 885,503 $ 831,629 1 CDARs are deposits generated through the Certificate of deposit account registry service. 2 ICS are deposits generated through the Insured cash sweep program.

Borrowings (Tables)

Borrowings (Tables)	6 Months Ended
	Jun. 30, 2017
Debt Instruments [Abstract]
Schedule of debt	The Company’s borrowings and weighted average interest rates were as follows for the periods presented: June 30, December 31, 2017 2016 Amount Rate Amount Rate By type of borrowing: FHLB borrowings $ 2,290,000 1.34 % $ 1,791,000 1.01 % Repurchase agreements 22,596 0.73 16,642 0.75 Federal funds purchased 100,000 1.31 — — Senior Notes 76,635 5.98 76,469 5.98 Subordinated Notes 172,607 5.45 172,501 5.45 Total borrowings $ 2,661,838 1.73 % $ 2,056,612 1.56 % By remaining period to maturity: Less than one year $ 1,877,596 1.28 % $ 1,397,642 0.87 % One to two years 461,635 2.24 311,469 2.53 Two to three years 100,000 1.64 75,000 1.50 Three to four years 50,000 1.68 50,000 1.38 Four to five years — — 50,000 1.68 Greater than five years 172,607 5.45 172,501 5.45 Total borrowings $ 2,661,838 1.73 % $ 2,056,612 1.56 %

Derivatives (Tables)

Derivatives (Tables)	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedges, Assets [Abstract]
Summary of derivatives	Summary information as of June 30, 2017 and December 31, 2016 regarding these derivatives is presented below: Notional amount Average maturity (in years) Weighted average fixed rate Weighted average variable rate Fair value June 30, 2017 Included in other assets: Third-party interest rate swap $ 166,058 $ 296 Customer interest rate swap 264,274 3,568 Total $ 430,332 5.88 4.13 % 1 m Libor + 2.29% $ 3,864 Included in other liabilities: Third-party interest rate swap (264,274 ) $ (3,130 ) Customer interest rate swap (166,058 ) (3,123 ) Total $ (430,332 ) 5.88 4.13 % 1 m Libor + 2.29% $ (6,253 ) December 31, 2016 3rd party interest rate swap 296,282 5.63 3.94 1 m Libor + 2.29% $ 2,088 Customer interest rate swap (296,282 ) 5.63 3.94 1 m Libor + 2.29% (2,088 )

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2017
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 six months ended June 30, June 30, 2017 2016 2017 2016 Income before income tax expense $ 62,719 $ 56,182 $ 119,495 $ 92,191 Tax at Federal statutory rate of 35% 21,951 19,664 41,823 32,267 State and local income taxes, net of Federal tax benefit 2,497 2,992 4,771 4,985 Tax-exempt interest, net of disallowed interest (3,790 ) (1,958 ) (7,274 ) (3,792 ) Bank owned life insurance income (560 ) (430 ) (1,022 ) (875 ) Non-deductible acquisition related costs 614 — 956 — Low income housing tax credits (138 ) (180 ) (277 ) (234 ) Stock-based compensation benefit (1) (64 ) — (806 ) — Other, net (191 ) (1,676 ) (143 ) (1,696 ) Actual income tax expense $ 20,319 $ 18,412 $ 38,028 $ 30,655 Effective income tax rate 32.4 % 32.8 % 31.8 % 33.3 %

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2017
Retirement Benefits [Abstract]
Summary of Company's stock option activity	The following table summarizes the activity in the Company’s active stock-based compensation plans for the six months ended June 30, 2017 : 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, 2017 3,639,838 932,223 $ 14.09 1,004,119 $ 11.00 Granted (393,581 ) 393,581 24.15 — — Stock awards vested — (151,862 ) 14.25 — — Exercised — — — (111,648 ) 10.11 Forfeited 46,867 (46,867 ) 18.50 — — Canceled/expired (1,446 ) — — (1,000 ) 13.18 Balance at June 30, 2017 3,291,678 1,127,075 $ 17.40 891,471 $ 11.11 Exercisable at June 30, 2017 774,551 $ 10.77
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 six months ended June 30, June 30, 2017 2016 2017 2016 Stock options $ 48 $ 125 $ 98 $ 251 Non-vested stock awards/performance units 1,849 1,622 3,535 3,036 Total $ 1,897 $ 1,747 $ 3,633 $ 3,287 Income tax benefit 617 573 1,181 1,095 Proceeds from stock option exercises 731 755 1,224 1,265
Unrecognized stock-based compensation expense	Unrecognized stock-based compensation expense as of June 30, 2017 was as follows: June 30, 2017 Stock options $ 43 Non-vested stock awards/performance units 13,299 Total $ 13,342

Other Post-Retirement Plans (Ta

Other Post-Retirement Plans (Tables)	6 Months Ended
	Jun. 30, 2017
Retirement Benefits [Abstract]
Schedule of net pension (benefit) expense and post-retirement expense	Net other post-retirement expense is comprised of the following for the periods presented below: For the three months ended For the six months ended June 30, June 30, 2017 2016 2017 2016 Service cost $ — $ — $ — $ — Interest cost 101 105 201 209 Net amortization and deferral 9 20 18 32 Total other post-retirement expense $ 110 $ 125 $ 219 $ 241

Other Non-interest Expense (Tab

Other Non-interest Expense (Tables)	6 Months Ended
	Jun. 30, 2017
Other Income and Expenses [Abstract]
Schedule of Other Non-interest Expense	Other non-interest expense items for the three and six months ended June 30, 2017 and 2016 , respectively, are presented in the following table. For the three months ended For the six months ended June 30, June 30, 2017 2016 2017 2016 Other non-interest expense: Advertising and promotion $ 834 $ 985 $ 1,385 $ 1,536 Professional fees 2,478 2,607 4,683 5,080 Data and check processing 2,421 2,261 4,890 4,015 Insurance & surety bond premium 687 897 1,224 1,682 Other 4,411 4,915 8,818 10,081 Total other non-interest expense $ 10,831 $ 11,665 $ 21,000 $ 22,394

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Computation of basic and diluted earnings per share	The following is a summary of the calculation of earnings per share (“EPS”): For the three months ended For the six months ended June 30, June 30, 2017 2016 2017 2016 Net income $ 42,400 $ 37,770 $ 81,467 $ 61,536 Weighted average common shares outstanding for computation of basic EPS 135,317,866 130,081,465 135,241,034 129,953,397 Common-equivalent shares due to the dilutive effect of stock options and unvested performance share grants (1) 605,031 607,264 626,827 568,624 Weighted average common shares for computation of diluted EPS 135,922,897 130,688,729 135,867,861 130,522,021 Earnings per common share: Basic $ 0.31 $ 0.29 $ 0.60 $ 0.47 Diluted 0.31 0.29 0.60 0.47 Weighted average common shares that could be exercised that were anti-dilutive for the period (2) — — — — (1) Represents incremental shares computed using the treasury stock method. (2) Anti-dilutive shares are not included in determining diluted earnings per share. There were no anti-dilutive shares in the three and six months ended June 30, 2017 or June 30, 2016 .

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2017
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 June 30, 2017 and December 31, 2016 for the Company and the Bank under the Basel III Capital Rules. The minimum required capital amounts presented include the minimum required capital levels as of June 30, 2017 and December 31, 2016 based on the phase-in provisions of the Basel III Capital Rules and the minimum required capital levels as of January 1, 2019 when the Basel III Capital Rules have been fully phased-in. 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 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 June 30, 2017 Common equity tier 1 to RWA: Sterling National Bank $ 1,243,272 10.64 % $ 671,582 5.75 % $ 817,578 7.00 % $ 759,180 6.50 % Sterling Bancorp 1,220,876 10.46 671,374 5.75 817,325 7.00 N/A N/A Tier 1 capital to RWA: Sterling National Bank 1,243,272 10.64 % 846,778 7.25 % 992,774 8.50 % 934,375 8.00 % Sterling Bancorp 1,220,876 10.46 846,515 7.25 992,466 8.50 N/A N/A Total capital to RWA: Sterling National Bank 1,486,574 12.73 % 1,080,371 9.25 % 1,226,367 10.50 % 1,167,969 10.00 % Sterling Bancorp 1,446,070 12.38 1,080,036 9.25 1,225,987 10.50 N/A N/A Tier 1 leverage ratio: Sterling National Bank 1,243,272 8.89 559,607 4.00 % 559,607 4.00 % 699,509 5.00 % Sterling Bancorp 1,220,876 8.73 559,476 4.00 559,476 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, 2016 Common equity tier 1 to RWA: Sterling National Bank $ 1,176,497 10.87 % $ 554,663 5.125 % $ 757,588 7.00 % $ 703,475 6.50 % Sterling Bancorp 1,160,739 10.73 554,474 5.125 757,330 7.00 N/A N/A Tier 1 capital to RWA: Sterling National Bank 1,176,497 10.87 % 717,003 6.625 % 919,928 8.50 % 865,815 8.00 % Sterling Bancorp 1,160,739 10.73 716,759 6.625 919,615 8.50 N/A N/A Total capital to RWA: Sterling National Bank 1,413,165 13.06 % 933,457 8.625 % 1,136,382 10.50 % 1,082,269 10.00 % Sterling Bancorp 1,377,547 12.73 933,139 8.625 1,135,995 10.50 N/A N/A Tier 1 leverage ratio: Sterling National Bank 1,176,497 9.08 % 518,308 4.000 % 518,308 4.00 % 647,885 5.00 % Sterling Bancorp 1,160,739 8.95 518,733 4.000 518,733 4.00 N/A N/A

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2017
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 the Company’s involvement in particular classes of off-balance sheet financial instruments, are summarized as follows: June 30, December 31, 2017 2016 Loan origination commitments $ 271,108 $ 245,319 Unused lines of credit 916,824 968,288 Letters of credit 118,385 114,582
Schedule of future minimum lease payments due	Future minimum lease payments due under non-cancelable operating leases at June 30, 2017 were as follows: Remainder of 2017 $ 5,051 2018 9,702 2019 8,145 2020 7,229 2021 5,780 2022 4,640 2023 and thereafter 14,452 $ 54,999

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Estimated fair value on a recurring basis	A summary of such investment securities available for sale and derivatives at June 30, 2017 and December 31, 2016 , respectively, were measured at estimated fair value on a recurring basis, is as follows: June 30, 2017 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets: Investment securities available for sale: Residential MBS (1) : Agency-backed $ 1,458,498 $ — $ 1,458,498 $ — CMO (2) /Other MBS 70,795 — 70,795 — Total residential MBS 1,529,293 — 1,529,293 — Other securities: Federal agencies 231,060 — 231,060 — Corporate 71,288 — 71,288 — State and municipal 264,231 264,231 — Total other securities 566,579 — 566,579 — Total available for sale securities 2,095,872 — 2,095,872 — Swaps 3,864 — 3,864 — Total assets $ 2,099,736 $ — $ 2,099,736 $ — Liabilities: Swaps $ (6,253 ) $ — $ (6,253 ) $ — Total liabilities $ (6,253 ) $ — $ (6,253 ) $ — (1) Residential MBS are debt securities whose cash flows come from residential 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 of the mortgage loans included in the pool are structured through a special purpose entity into various classes and tranches, which then issue 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. December 31, 2016 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets: Investment securities available for sale: Residential MBS: Agency-backed $ 1,193,481 $ — $ 1,193,481 $ — CMO/Other MBS 56,681 — 56,681 — Total residential MBS 1,250,162 — 1,250,162 — Federal agencies 193,979 — 193,979 — Corporate bonds 42,506 — 42,506 — State and municipal 240,770 240,770 — Total other securities 477,255 — 477,255 — Total available for sale securities 1,727,417 — 1,727,417 — Swaps 2,088 — 2,088 — Total assets $ 1,729,505 $ — $ 1,729,505 $ — Liabilities: Swaps $ (2,088 ) $ — $ (2,088 ) $ — Total liabilities $ (2,088 ) $ — $ (2,088 ) $ —
Impaired loans measured at estimated fair value on nonrecurring basis	A summary of the classes with impaired loans at June 30, 2017 and December 31, 2016 , respectively, is set forth below: June 30, 2017 Fair value Level 1 inputs Level 2 inputs Level 3 inputs C&I $ 177 $ — $ — $ 177 Commercial real estate 5,986 — — 5,986 Total impaired loans measured at fair value $ 6,163 $ — $ — $ 6,163 December 31, 2016 Fair value Level 1 inputs Level 2 inputs Level 3 inputs Commercial real estate $ 6,786 $ — $ — $ 6,786 Total impaired loans measured at fair value $ 6,786 $ — $ — $ 6,786
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 June 30, 2017 : June 30, 2017 Carrying amount Level 1 inputs Level 2 inputs Level 3 inputs Financial assets: Cash and cash equivalents $ 282,167 $ 282,167 $ — $ — Securities available for sale 2,095,872 — 2,095,872 — Securities held to maturity 1,456,304 — 1,449,975 — Portfolio loans, net 10,162,166 — — 10,111,906 Accrued interest receivable on securities 18,497 — 18,497 — Accrued interest receivable on loans 29,050 — — 29,050 FHLB stock and FRB stock 160,241 — — — Swaps 3,864 — 3,864 — Financial liabilities: Non-maturity deposits (9,900,356 ) (9,900,356 ) — — Certificates of deposit (602,354 ) — (600,491 ) — FHLB borrowings (2,290,000 ) — (2,287,449 ) — Other borrowings (122,596 ) — (122,596 ) — Senior Notes (76,635 ) — (79,447 ) — Subordinated Notes (172,607 ) — (178,234 ) — Mortgage escrow funds (16,431 ) — (16,431 ) — Accrued interest payable on deposits (691 ) — (691 ) — Accrued interest payable on borrowings (7,106 ) — (7,106 ) — Swaps (6,253 ) — (6,253 ) — 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, 2016 : December 31, 2016 Carrying amount Level 1 inputs Level 2 inputs Level 3 inputs Financial assets: Cash and cash equivalents $ 293,646 $ 293,646 $ — $ — Securities available for sale 1,727,417 — 1,727,417 — Securities held to maturity 1,391,421 — 1,357,997 — Loans held for sale 41,889 — 41,889 — Portfolio loans, net 9,463,608 — — 9,461,469 Accrued interest receivable on securities 16,495 — 16,495 — Accrued interest receivable on loans 26,824 — — 26,824 FHLB stock and FRB stock 135,098 — — — Swaps 2,088 — 2,088 — Financial liabilities: Non-maturity deposits (9,484,505 ) (9,484,505 ) — — Certificates of deposit (583,754 ) — (582,811 ) — FHLB borrowings (1,791,000 ) — (1,788,676 ) — Other borrowings (16,642 ) — (16,642 ) — Senior Notes (76,469 ) — (79,283 ) — Subordinated Notes (172,501 ) — (169,813 ) — Mortgage escrow funds (13,572 ) — (13,572 ) — Accrued interest payable on deposits (663 ) — (663 ) — Accrued interest payable on borrowings (3,621 ) — (3,621 ) — Swaps (2,088 ) — (2,088 ) —

Accumulated Other Comprehensi45

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Components of accumulated other comprehensive income (loss) (“AOCI”) were as follows as of the dates shown below: June 30, December 31, 2017 2016 Net unrealized holding loss on available for sale securities $ (20,998 ) $ (37,417 ) Related income tax benefit 8,294 14,780 Available for sale securities AOCI, net of tax (12,704 ) (22,637 ) Net unrealized holding loss on securities transferred to held to maturity (4,907 ) (5,395 ) Related income tax benefit 1,938 2,131 Securities transferred to held to maturity AOCI, net of tax (2,969 ) (3,264 ) Net unrealized holding loss on retirement plans (1,149 ) (1,213 ) Related income tax benefit 454 479 Retirement plans AOCI, net of tax (695 ) (734 ) AOCI $ (16,368 ) $ (26,635 ) The following table presents the changes in each component of AOCI for the three and six months ended June 30, 2017 and 2016 : Net unrealized holding gain (loss) on available for sale securities Net unrealized holding gain (loss) on securities transferred to held to maturity Net unrealized holding (loss) gain on retirement plans Total For the three months ended June 30, 2017 Balance beginning of the period $ (19,904 ) $ (3,117 ) $ (700 ) $ (23,721 ) Other comprehensive gain before reclassification 7,061 — — 7,061 Amounts reclassified from AOCI 139 148 5 292 Total other comprehensive income 7,200 148 5 7,353 Balance at end of period $ (12,704 ) $ (2,969 ) $ (695 ) $ (16,368 ) For the three months ended June 30, 2016 Balance beginning of the period $ 9,115 $ (4,200 ) $ (756 ) $ 4,159 Other comprehensive gain before reclassification 8,984 — — 8,984 Amounts reclassified from AOCI (2,708 ) 469 26 (2,213 ) Total other comprehensive income 6,276 469 26 6,771 Balance at end of period $ 15,391 $ (3,731 ) $ (730 ) $ 10,930 Location in income statement where reclassification from AOCI is included Net (loss) gain on sale of securities Interest income on securities Compensation and benefits 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 (loss) gain on retirement plans Total For the six months ended June 30, 2017 Balance beginning of the period $ (22,637 ) $ (3,264 ) $ (734 ) $ (26,635 ) Other comprehensive gain before reclassification 9,780 — — 9,780 Amounts reclassified from AOCI 153 295 39 487 Total other comprehensive income 9,933 295 39 10,267 Balance at end of period $ (12,704 ) $ (2,969 ) $ (695 ) $ (16,368 ) For the six months ended June 30, 2016 Balance beginning of the period $ (6,999 ) $ (4,155 ) $ (970 ) $ (12,124 ) Other comprehensive gain before reclassification 24,800 — — 24,800 Amounts reclassified from AOCI (2,410 ) 424 240 (1,746 ) Total other comprehensive income 22,390 424 240 23,054 Balance at end of period $ 15,391 $ (3,731 ) $ (730 ) $ 10,930 Location in income statement where reclassification from AOCI is included Net (loss) gain on sale of securities Interest income on securities Compensation and benefits expense

Pending Merger with Astoria F46

Pending Merger with Astoria Financial Corporation (Tables)	6 Months Ended
	Jun. 30, 2017
Subsequent Events [Abstract]
Business Acquisition, Pro Forma Information	Upon closing, Company shareholders will own approximately 60% of stock in the combined company and Astoria shareholders will own approximately 40% . Pro forma information for the year ended December 31, 2016 was as follows: For the year ended December 31, 2016 Pro Forma Condensed Income Statement Information: Net interest income $ 818,907 Provision for loan losses 10,849 Income before income taxes 385,185 Net income 251,173 Pro Forma Condensed Combined Balance Sheet Information: Portfolio loans, net 19,530,795 Total assets 29,510,290 Deposits 18,956,004 Total stockholders’ equity 4,218,852

Basis of Financial Statement 47

Basis of Financial Statement Presentation - Adoption of New Accounting Standards (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reduction of income tax expense	$ 64	$ 806

Acquisitions (Details)

Acquisitions (Details) - USD ($) $ in Thousands	Sep. 09, 2016	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Business Acquisition [Line Items]
Portfolio loans purchased			$ 94,912
Discount amount on acquired loan receivable			3,742		$ 1,788
Goodwill			$ 696,600		$ 696,600
NSBC
Business Acquisition [Line Items]
Percentage of outstanding common stock acquired		100.00%
Loans receivable acquired		$ 320,447
Premium paid for loans receivable acquired as a percent of gross loans acquired		5.90%
Premium paid for loans receivable acquired		$ 18,906
Liabilities assumed		4,839
Goodwill		25,698
NSBC | Customer lists
Business Acquisition [Line Items]
Intangible asset acquired		$ 1,500
Estimated life		24 months
Traditional C&I | GE Capital
Business Acquisition [Line Items]
Portfolio loan acquired, unpaid principal balance	$ 169,760
Portfolio loans purchased	$ 163,282
Discount rate on acquired portfolio loan	4.00%
Discount amount on acquired loan receivable	$ 6,790

Securities - Amortized Cost to

Securities - Amortized Cost to Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Available for Sale
Amortized cost	$ 2,116,870	$ 1,764,834
Gross unrealized gains	5,274	1,504
Gross unrealized losses	(26,272)	(38,921)
Available for sale, at fair value	2,095,872	1,727,417
Held to Maturity
Amortized cost	1,456,304	1,391,421
Gross unrealized gains	11,983	7,016
Gross unrealized losses	(18,312)	(40,440)
Fair value	1,449,975	1,357,997
Residential MBS:
Available for Sale
Amortized cost	1,542,645	1,271,296
Gross unrealized gains	2,486	613
Gross unrealized losses	(15,838)	(21,747)
Available for sale, at fair value	1,529,293	1,250,162
Held to Maturity
Amortized cost	320,072	318,133
Gross unrealized gains	1,911	1,427
Gross unrealized losses	(3,031)	(4,197)
Fair value	318,952	315,363
Other securities:
Available for Sale
Amortized cost	574,225	493,538
Gross unrealized gains	2,788	891
Gross unrealized losses	(10,434)	(17,174)
Available for sale, at fair value	566,579	477,255
Held to Maturity
Amortized cost	1,136,232	1,073,288
Gross unrealized gains	10,072	5,589
Gross unrealized losses	(15,281)	(36,243)
Fair value	1,131,023	1,042,634
Agency-backed | Residential MBS:
Available for Sale
Amortized cost	1,471,034	1,213,733
Gross unrealized gains	2,442	569
Gross unrealized losses	(14,978)	(20,821)
Available for sale, at fair value	1,458,498	1,193,481
Held to Maturity
Amortized cost	283,258	277,539
Gross unrealized gains	1,848	1,353
Gross unrealized losses	(2,534)	(3,625)
Fair value	282,572	275,267
CMO/Other MBS | Residential MBS:
Available for Sale
Amortized cost	71,611	57,563
Gross unrealized gains	44	44
Gross unrealized losses	(860)	(926)
Available for sale, at fair value	70,795	56,681
Held to Maturity
Amortized cost	36,814	40,594
Gross unrealized gains	63	74
Gross unrealized losses	(497)	(572)
Fair value	36,380	40,096
Federal agencies | Other securities:
Available for Sale
Amortized cost	238,826	204,770
Gross unrealized gains	0	2
Gross unrealized losses	(7,766)	(10,793)
Available for sale, at fair value	231,060	193,979
Held to Maturity
Amortized cost	58,422	58,200
Gross unrealized gains	1,721	1,392
Gross unrealized losses	0	0
Fair value	60,143	59,592
Corporate | Other securities:
Available for Sale
Amortized cost	71,367	43,464
Gross unrealized gains	731	150
Gross unrealized losses	(810)	(1,108)
Available for sale, at fair value	71,288	42,506
Held to Maturity
Amortized cost	30,000	35,048
Gross unrealized gains	706	431
Gross unrealized losses	0	(11)
Fair value	30,706	35,468
State and municipal | Other securities:
Available for Sale
Amortized cost	264,032	245,304
Gross unrealized gains	2,057	739
Gross unrealized losses	(1,858)	(5,273)
Available for sale, at fair value	264,231	240,770
Held to Maturity
Amortized cost	1,032,060	974,290
Gross unrealized gains	7,460	3,571
Gross unrealized losses	(15,281)	(36,232)
Fair value	1,024,239	941,629
Other | Other securities:
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	15,750	5,750
Gross unrealized gains	185	195
Gross unrealized losses	0	0
Fair value	$ 15,935	$ 5,945

Securities - Future Maturity (D

Securities - Future Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Available for Sale
Amortized cost, One year or less	$ 12,668
Amortized cost, One to five years	160,069
Amortized cost, Five to ten years	268,533
Amortized cost, Greater than ten years	132,955
Amortized cost, Total securities with a stated maturity date	574,225
Amortized cost, Available for sale securities	2,116,870	$ 1,764,834
Fair value, One year or less	12,704
Fair value, One to five years	159,861
Fair value, Five to ten years	263,837
Fair value, Greater than ten years	130,177
Fair value, Total securities with a stated maturity date	566,579
Securities available for sale	2,095,872	1,727,417
Held to Maturity
Amortized cost, One year or less	18,347
Amortized cost, One to five years	74,070
Amortized cost, Five to ten years	242,409
Amortized cost, Greater than ten years	801,406
Amortized cost, Total securities with a stated maturity date	1,136,232
Amortized cost, Held to maturity securities	1,456,304	1,391,421
Fair value, One year or less	18,508
Fair value, One to five years	75,768
Fair value, Five to ten years	247,068
Fair value, Greater than ten years	789,679
Fair value, Total securities with a stated maturity date	1,131,023
Securities held to maturity	1,449,975	1,357,997
Residential MBS:
Available for Sale
Amortized cost, Available for sale securities	1,542,645	1,271,296
Securities available for sale	1,529,293	1,250,162
Held to Maturity
Amortized cost, Held to maturity securities	320,072	318,133
Securities held to maturity	$ 318,952	$ 315,363

Securities - Sale of Securities

Securities - Sale of Securities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales	$ 10,000	$ 283,126	$ 10,232	$ 558,484
Gross realized gains	0	4,834	6	6,395
Gross realized losses	(230)	(360)	(259)	(2,204)
Income tax (benefit) expense on realized net (losses) gains	$ (75)	$ 1,466	$ (82)	$ 1,394

Securities - Available-for-sale

Securities - Available-for-sale Securities with Unrealized Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Fair value, Less than 12 months	$ 1,541,387	$ 1,509,447
Unrealized losses, Less than 12 months	(23,827)	(37,448)
Fair value, 12 months or longer	53,348	34,604
Unrealized losses, 12 months or longer	(2,445)	(1,473)
Fair value, Total	1,594,735	1,544,051
Unrealized losses, Total	(26,272)	(38,921)
Residential MBS:
Schedule of Available-for-sale Securities [Line Items]
Fair value, Less than 12 months	1,196,158	1,140,482
Unrealized losses, Less than 12 months	(15,447)	(21,322)
Fair value, 12 months or longer	13,719	15,925
Unrealized losses, 12 months or longer	(391)	(425)
Fair value, Total	1,209,877	1,156,407
Unrealized losses, Total	(15,838)	(21,747)
Other securities:
Schedule of Available-for-sale Securities [Line Items]
Fair value, Less than 12 months	345,229	368,965
Unrealized losses, Less than 12 months	(8,380)	(16,126)
Fair value, 12 months or longer	39,629	18,679
Unrealized losses, 12 months or longer	(2,054)	(1,048)
Fair value, Total	384,858	387,644
Unrealized losses, Total	(10,434)	(17,174)
Agency-backed | Residential MBS:
Schedule of Available-for-sale Securities [Line Items]
Fair value, Less than 12 months	1,158,592	1,101,641
Unrealized losses, Less than 12 months	(14,970)	(20,816)
Fair value, 12 months or longer	747	686
Unrealized losses, 12 months or longer	(8)	(5)
Fair value, Total	1,159,339	1,102,327
Unrealized losses, Total	(14,978)	(20,821)
CMO/Other MBS | Residential MBS:
Schedule of Available-for-sale Securities [Line Items]
Fair value, Less than 12 months	37,566	38,841
Unrealized losses, Less than 12 months	(477)	(506)
Fair value, 12 months or longer	12,972	15,239
Unrealized losses, 12 months or longer	(383)	(420)
Fair value, Total	50,538	54,080
Unrealized losses, Total	(860)	(926)
Federal agencies | Other securities:
Schedule of Available-for-sale Securities [Line Items]
Fair value, Less than 12 months	210,780	185,504
Unrealized losses, Less than 12 months	(6,497)	(10,793)
Fair value, 12 months or longer	20,280	4
Unrealized losses, 12 months or longer	(1,269)	0
Fair value, Total	231,060	185,508
Unrealized losses, Total	(7,766)	(10,793)
Corporate | Other securities:
Schedule of Available-for-sale Securities [Line Items]
Fair value, Less than 12 months	17,702	10,399
Unrealized losses, Less than 12 months	(114)	(137)
Fair value, 12 months or longer	15,182	14,942
Unrealized losses, 12 months or longer	(696)	(971)
Fair value, Total	32,884	25,341
Unrealized losses, Total	(810)	(1,108)
State and municipal | Other securities:
Schedule of Available-for-sale Securities [Line Items]
Fair value, Less than 12 months	116,747	173,062
Unrealized losses, Less than 12 months	(1,769)	(5,196)
Fair value, 12 months or longer	4,167	3,733
Unrealized losses, 12 months or longer	(89)	(77)
Fair value, Total	120,914	176,795
Unrealized losses, Total	$ (1,858)	$ (5,273)

Securities - Held to Maturity S

Securities - Held to Maturity Securities with Unrealized Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Fair value, Less than 12 months	$ 820,839	$ 978,592
Unrecognized losses, Less than 12 months	(16,479)	(40,364)
Fair value, 12 months or longer	41,618	8,066
Unrecognized losses, 12 months or longer	(1,833)	(76)
Fair value, Total	862,457	986,658
Unrecognized losses, Total	(18,312)	(40,440)
Residential MBS:
Schedule of Held-to-maturity Securities [Line Items]
Fair value, Less than 12 months	199,109	219,902
Unrecognized losses, Less than 12 months	(2,797)	(4,195)
Fair value, 12 months or longer	5,262	213
Unrecognized losses, 12 months or longer	(234)	(2)
Fair value, Total	204,371	220,115
Unrecognized losses, Total	(3,031)	(4,197)
Residential MBS: | Agency-backed
Schedule of Held-to-maturity Securities [Line Items]
Fair value, Less than 12 months	167,514	185,116
Unrecognized losses, Less than 12 months	(2,302)	(3,623)
Fair value, 12 months or longer	5,156	213
Unrecognized losses, 12 months or longer	(232)	(2)
Fair value, Total	172,670	185,329
Unrecognized losses, Total	(2,534)	(3,625)
Residential MBS: | CMO/Other MBS
Schedule of Held-to-maturity Securities [Line Items]
Fair value, Less than 12 months	31,595	34,786
Unrecognized losses, Less than 12 months	(495)	(572)
Fair value, 12 months or longer	106	0
Unrecognized losses, 12 months or longer	(2)	0
Fair value, Total	31,701	34,786
Unrecognized losses, Total	(497)	(572)
Other securities:
Schedule of Held-to-maturity Securities [Line Items]
Fair value, Less than 12 months	621,730	758,690
Unrecognized losses, Less than 12 months	(13,682)	(36,169)
Fair value, 12 months or longer	36,356	7,853
Unrecognized losses, 12 months or longer	(1,599)	(74)
Fair value, Total	658,086	766,543
Unrecognized losses, Total	(15,281)	(36,243)
Other securities: | Corporate
Schedule of Held-to-maturity Securities [Line Items]
Fair value, Less than 12 months		0
Unrecognized losses, Less than 12 months		0
Fair value, 12 months or longer		5,037
Unrecognized losses, 12 months or longer		(11)
Fair value, Total		5,037
Unrecognized losses, Total		(11)
Other securities: | State and municipal
Schedule of Held-to-maturity Securities [Line Items]
Fair value, Less than 12 months	621,730	758,690
Unrecognized losses, Less than 12 months	(13,682)	(36,169)
Fair value, 12 months or longer	36,356	2,816
Unrecognized losses, 12 months or longer	(1,599)	(63)
Fair value, Total	658,086	761,506
Unrecognized losses, Total	$ (15,281)	$ (36,232)

Securities - Narrative (Details

Securities - Narrative (Details)	6 Months Ended
	Jun. 30, 2017security
Investments, Debt and Equity Securities [Abstract]
Number of securities which were in continuous unrealized loss position for less than 12 months	250
Number of securities which were in continuous unrealized loss position for 12 months or more	44

Securities - Securities Pledged

Securities - Securities Pledged for Borrowings (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total securities pledged	$ 1,580,051	$ 1,480,275
Federal Home Loan Bank Borrowings
Financial Instruments Owned and Pledged as Collateral [Line Items]
Available-for-sale securities pledged as collateral	260,387	67,599
Held-to-maturity securities pledged as collateral	116,847	55,343
Municipal Deposits
Financial Instruments Owned and Pledged as Collateral [Line Items]
Available-for-sale securities pledged as collateral	334,771	398,961
Held-to-maturity securities pledged as collateral	868,046	958,246
Interest rate swap
Financial Instruments Owned and Pledged as Collateral [Line Items]
Available-for-sale securities pledged as collateral	$ 0	$ 126

Portfolio Loans - Composition o

Portfolio Loans - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Components of loan portfolio, excluding loans held for sale
Traditional C&I	$ 1,602,659		$ 1,404,774
Asset-based lending	723,055		741,942
Payroll finance	239,618		255,549
Warehouse lending	687,701		616,946
Factored receivables	195,690		214,242
Equipment financing	704,750		589,315
Public sector finance	466,316		349,182
Total C&I	4,619,789		4,171,950
Commercial real estate	3,367,888		3,162,942
Multi-family	1,063,097		981,076
Acquisition, development & construction (“ADC”)	223,713		230,086
Total commercial mortgage	4,654,698		4,374,104
Total commercial	9,274,487		8,546,054
Residential mortgage	692,562		697,108
Consumer	265,268		284,068
Total portfolio loans	10,232,317		9,527,230
Allowance for loan losses	(70,151)	$ (66,939)	(63,622)	$ (55,865)	$ (53,014)	$ (50,145)
Portfolio loans, net	$ 10,162,166		$ 9,463,608

Portfolio Loans - Narrative (De

Portfolio Loans - Narrative (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2017USD ($)	Jun. 30, 2017USD ($)loan	Jun. 30, 2016USD ($)loan	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Net deferred loan origination costs	$ 3,742,000	$ 3,742,000			$ 1,788,000
Bank pledged mortgages - unpaid principal balance	2,562,880,000	2,562,880,000			2,050,982,000
Non accrual loans	70,416,000	70,416,000			77,163,000
Maximum loan balance for credit risk to be evaluated on a homogeneous basis	500,000	500,000
Loans included in allowance for loan losses	70,151,000	70,151,000	$ 55,865,000	$ 66,939,000	63,622,000	$ 53,014,000	$ 50,145,000
Impaired loans with an allowance recorded	0	$ 0
Loans modified by TDR | loan		7	1
TDRs modified and subsequently defaulted | loan		0	0
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	$ 0
PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Non accrual loans	11,142,000	11,142,000			12,241,000
Loans evaluated by segment, Purchased credit impaired loans	82,485,000	82,485,000			88,908,000
Loans included in allowance for loan losses	916,000	916,000			685,000
Balance of PCI loans treated under cost recovery method	11,142,000	11,142,000			12,241,000
Asset-based lending
Financing Receivable, Allowance for Credit Losses [Line Items]
Non accrual loans	0	0			0
Loans included in allowance for loan losses	2,582,000	2,582,000	$ 3,280,000	3,353,000	3,316,000	2,809,000	2,793,000
Asset-based lending | PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans evaluated by segment, Purchased credit impaired loans	15,495,000	15,495,000			17,695,000
Asset-based lending | PCI Loans | NSBC
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans evaluated by segment, Purchased credit impaired loans	15,495,000	15,495,000
Warehouse lending
Financing Receivable, Allowance for Credit Losses [Line Items]
Non accrual loans	0	0			0
Loans included in allowance for loan losses	2,435,000	2,435,000	652,000	1,227,000	1,563,000	520,000	589,000
Warehouse lending | PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans evaluated by segment, Purchased credit impaired loans	0	0			0
Residential mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Non accrual loans	11,727,000	11,727,000			14,790,000
Loans formally in process of foreclosure	7,214,000	7,214,000			9,263,000
Maximum loan balance for credit risk to be evaluated on a homogeneous basis	500,000	500,000
Loans included in allowance for loan losses	5,124,000	$ 5,124,000	$ 4,875,000	5,715,000	5,864,000	4,850,000	5,007,000
Loans modified by TDR | loan		2	1
Residential mortgage | PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Non accrual loans	804,000	$ 804,000			1,391,000
Loans evaluated by segment, Purchased credit impaired loans	969,000	969,000			2,167,000
Traditional C&I
Financing Receivable, Allowance for Credit Losses [Line Items]
Non accrual loans	25,827,000	25,827,000			26,386,000
Loans included in allowance for loan losses	15,506,000	15,506,000	$ 11,057,000	14,441,000	12,864,000	10,905,000	9,922,000
Traditional C&I | PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Non accrual loans	3,950,000	3,950,000			4,048,000
Loans evaluated by segment, Purchased credit impaired loans	13,642,000	13,642,000			14,087,000
Public sector finance
Financing Receivable, Allowance for Credit Losses [Line Items]
Non accrual loans	0	0			0
Loans included in allowance for loan losses	1,887,000	1,887,000	$ 894,000	$ 1,249,000	1,062,000	$ 555,000	$ 547,000
Public sector finance | PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans evaluated by segment, Purchased credit impaired loans	$ 0	$ 0			$ 0

Portfolio Loans - Status of Loa

Portfolio Loans - Status of Loans and TDRs (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Non-Performing loans:
Current loans	$ 10,145,896,000	$ 9,433,277,000
Non accrual loans	70,416,000	77,163,000
Total portfolio loans	10,232,317,000	9,527,230,000
Current loans	14,029,000	11,032,000
30-59 days past due	0	253,000
60-89 days past due	0	0
90 plus days past due	0	0
Non-Accrual	2,401,000	1,989,000
Total	16,430,000	13,274,000
Nonperforming loans
Non-Performing loans:
Non accrual loans	70,416,000	77,163,000
Non-performing loans:
Loans 90 days past due and still accruing	935,000	1,690,000
Total non-performing loans	71,351,000	78,853,000
Traditional C&I
Non-Performing loans:
Current loans	1,575,384,000	1,376,181,000
Non accrual loans	25,827,000	26,386,000
Total portfolio loans	1,602,659,000	1,404,774,000
Current loans	569,000	572,000
30-59 days past due	0	0
60-89 days past due	0	0
90 plus days past due	0	0
Non-Accrual	0	128,000
Total	569,000	700,000
Asset-based lending
Non-Performing loans:
Current loans	723,055,000	741,942,000
Non accrual loans	0	0
Total portfolio loans	723,055,000	741,942,000
Payroll finance
Non-Performing loans:
Current loans	238,813,000	254,715,000
Non accrual loans	218,000	199,000
Total portfolio loans	239,618,000	255,549,000
Warehouse lending
Non-Performing loans:
Current loans	687,701,000	616,946,000
Non accrual loans	0	0
Total portfolio loans	687,701,000	616,946,000
Factored receivables
Non-Performing loans:
Current loans	195,499,000	213,624,000
Non accrual loans	191,000	618,000
Total portfolio loans	195,690,000	214,242,000
Equipment financing
Non-Performing loans:
Current loans	696,529,000	583,835,000
Non accrual loans	3,206,000	2,246,000
Total portfolio loans	704,750,000	589,315,000
Current loans	2,938,000	0
30-59 days past due	0	0
60-89 days past due	0	0
90 plus days past due	0	0
Non-Accrual	0	29,000
Total	2,938,000	29,000
Public sector finance
Non-Performing loans:
Current loans	466,316,000	349,182,000
Non accrual loans	0	0
Total portfolio loans	466,316,000	349,182,000
Commercial real estate
Non-Performing loans:
Current loans	3,344,334,000	3,140,561,000
Non accrual loans	21,692,000	21,008,000
Total portfolio loans	3,367,888,000	3,162,942,000
Current loans	2,958,000	2,443,000
30-59 days past due	0	253,000
60-89 days past due	0	0
90 plus days past due	0	0
Non-Accrual	125,000	0
Total	3,083,000	2,696,000
Multi-family
Non-Performing loans:
Current loans	1,060,837,000	981,005,000
Non accrual loans	60,000	71,000
Total portfolio loans	1,063,097,000	981,076,000
ADC
Non-Performing loans:
Current loans	222,449,000	224,817,000
Non accrual loans	1,264,000	5,269,000
Total portfolio loans	223,713,000	230,086,000
Current loans	5,150,000	5,962,000
30-59 days past due	0	0
60-89 days past due	0	0
90 plus days past due	0	0
Non-Accrual	921,000	458,000
Total	6,071,000	6,420,000
Residential mortgage
Non-Performing loans:
Current loans	677,836,000	675,750,000
Non accrual loans	11,727,000	14,790,000
Total portfolio loans	692,562,000	697,108,000
Current loans	2,371,000	2,055,000
30-59 days past due	0	0
60-89 days past due	0	0
90 plus days past due	0	0
Non-Accrual	1,355,000	1,374,000
Total	3,726,000	3,429,000
Consumer
Non-Performing loans:
Current loans	257,143,000	274,719,000
Non accrual loans	6,231,000	6,576,000
Total portfolio loans	265,268,000	284,068,000
Current loans	43,000
30-59 days past due	0
60-89 days past due	0
90 plus days past due	0
Non-Accrual	0
Total	43,000
30 to 59 Days Past Due
Non-Performing loans:
Past due loans	8,865,000	11,876,000
30 to 59 Days Past Due | Traditional C&I
Non-Performing loans:
Past due loans	1,093,000	835,000
30 to 59 Days Past Due | Asset-based lending
Non-Performing loans:
Past due loans	0	0
30 to 59 Days Past Due | Payroll finance
Non-Performing loans:
Past due loans	10,000	0
30 to 59 Days Past Due | Warehouse lending
Non-Performing loans:
Past due loans	0	0
30 to 59 Days Past Due | Factored receivables
Non-Performing loans:
Past due loans	0	0
30 to 59 Days Past Due | Equipment financing
Non-Performing loans:
Past due loans	3,617,000	2,142,000
30 to 59 Days Past Due | Public sector finance
Non-Performing loans:
Past due loans	0	0
30 to 59 Days Past Due | Commercial real estate
Non-Performing loans:
Past due loans	1,439,000	967,000
30 to 59 Days Past Due | Multi-family
Non-Performing loans:
Past due loans	0	0
30 to 59 Days Past Due | ADC
Non-Performing loans:
Past due loans	0	0
30 to 59 Days Past Due | Residential mortgage
Non-Performing loans:
Past due loans	1,900,000	5,509,000
30 to 59 Days Past Due | Consumer
Non-Performing loans:
Past due loans	806,000	2,423,000
60 to 89 Days Past Due
Non-Performing loans:
Past due loans	6,205,000	3,224,000
60 to 89 Days Past Due | Traditional C&I
Non-Performing loans:
Past due loans	316,000	817,000
60 to 89 Days Past Due | Asset-based lending
Non-Performing loans:
Past due loans	0	0
60 to 89 Days Past Due | Payroll finance
Non-Performing loans:
Past due loans	0	14,000
60 to 89 Days Past Due | Warehouse lending
Non-Performing loans:
Past due loans	0	0
60 to 89 Days Past Due | Factored receivables
Non-Performing loans:
Past due loans	0	0
60 to 89 Days Past Due | Equipment financing
Non-Performing loans:
Past due loans	1,398,000	1,092,000
60 to 89 Days Past Due | Public sector finance
Non-Performing loans:
Past due loans	0	0
60 to 89 Days Past Due | Commercial real estate
Non-Performing loans:
Past due loans	234,000	0
60 to 89 Days Past Due | Multi-family
Non-Performing loans:
Past due loans	2,200,000	0
60 to 89 Days Past Due | ADC
Non-Performing loans:
Past due loans	0	0
60 to 89 Days Past Due | Residential mortgage
Non-Performing loans:
Past due loans	970,000	951,000
60 to 89 Days Past Due | Consumer
Non-Performing loans:
Past due loans	1,087,000	350,000
90 or More Days Past Due
Non-Performing loans:
Past due loans	935,000	1,690,000
90 or More Days Past Due | Traditional C&I
Non-Performing loans:
Past due loans	39,000	555,000
90 or More Days Past Due | Asset-based lending
Non-Performing loans:
Past due loans	0	0
90 or More Days Past Due | Payroll finance
Non-Performing loans:
Past due loans	577,000	621,000
90 or More Days Past Due | Warehouse lending
Non-Performing loans:
Past due loans	0	0
90 or More Days Past Due | Factored receivables
Non-Performing loans:
Past due loans	0	0
90 or More Days Past Due | Equipment financing
Non-Performing loans:
Past due loans	0	0
90 or More Days Past Due | Public sector finance
Non-Performing loans:
Past due loans	0	0
90 or More Days Past Due | Commercial real estate
Non-Performing loans:
Past due loans	189,000	406,000
90 or More Days Past Due | Multi-family
Non-Performing loans:
Past due loans	0	0
90 or More Days Past Due | ADC
Non-Performing loans:
Past due loans	0	0
90 or More Days Past Due | Residential mortgage
Non-Performing loans:
Past due loans	129,000	108,000
90 or More Days Past Due | Consumer
Non-Performing loans:
Past due loans	$ 1,000	$ 0

Portfolio Loans - Nonaccrual Lo

Portfolio Loans - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	$ 70,416	$ 77,163
Non-accrual loans, unpaid principal balance	80,234	86,592
Traditional C&I
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	25,827	26,386
Non-accrual loans, unpaid principal balance	26,419	26,386
Payroll finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	218	199
Non-accrual loans, unpaid principal balance	0	199
Factored receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	191	618
Non-accrual loans, unpaid principal balance	0	618
Equipment financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	3,206	2,246
Non-accrual loans, unpaid principal balance	3,206	2,246
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	21,692	21,008
Non-accrual loans, unpaid principal balance	27,006	25,619
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	60	71
Non-accrual loans, unpaid principal balance	67	71
ADC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	1,264	5,269
Non-accrual loans, unpaid principal balance	1,411	5,398
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	11,727	14,790
Non-accrual loans, unpaid principal balance	14,345	18,190
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	6,231	6,576
Non-accrual loans, unpaid principal balance	7,780	7,865
Receivables without deteriorated credit quality
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	59,274	64,922
Receivables without deteriorated credit quality | Traditional C&I
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	21,877	22,338
Receivables without deteriorated credit quality | Payroll finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	218	199
Receivables without deteriorated credit quality | Factored receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	191	618
Receivables without deteriorated credit quality | Equipment financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	3,206	2,246
Receivables without deteriorated credit quality | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	16,135	15,063
Receivables without deteriorated credit quality | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	60	71
Receivables without deteriorated credit quality | ADC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	1,264	5,269
Receivables without deteriorated credit quality | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	10,923	13,399
Receivables without deteriorated credit quality | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	5,400	5,719
Receivables acquired with deteriorated credit quality
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	11,142	12,241
Receivables acquired with deteriorated credit quality | Traditional C&I
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	3,950	4,048
Receivables acquired with deteriorated credit quality | Payroll finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	0	0
Receivables acquired with deteriorated credit quality | Factored receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	0	0
Receivables acquired with deteriorated credit quality | Equipment financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	0	0
Receivables acquired with deteriorated credit quality | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	5,557	5,945
Receivables acquired with deteriorated credit quality | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	0	0
Receivables acquired with deteriorated credit quality | ADC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	0	0
Receivables acquired with deteriorated credit quality | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	804	1,391
Receivables acquired with deteriorated credit quality | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment non-accrual loans	$ 831	$ 857

Portfolio Loans - Loans Evaluat

Portfolio Loans - Loans Evaluated for Impairment (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	$ 55,596	$ 55,391
Loans evaluated by segment, Collectively evaluated for impairment	10,094,236	9,382,931
Total portfolio loans	10,232,317	9,527,230
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	70,151	63,622
Total allowance for loan losses	70,151	63,622
PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	82,485	88,908
Traditional C&I
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	24,870	25,221
Loans evaluated by segment, Collectively evaluated for impairment	1,564,147	1,365,466
Total portfolio loans	1,602,659	1,404,774
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	15,506	12,864
Total allowance for loan losses	15,506	12,864
Traditional C&I | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	13,642	14,087
Asset-based 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	707,560	724,247
Total portfolio loans	723,055	741,942
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	2,582	3,316
Total allowance for loan losses	2,582	3,316
Asset-based lending | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	15,495	17,695
Payroll finance
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	321	570
Loans evaluated by segment, Collectively evaluated for impairment	239,297	254,979
Total portfolio loans	239,618	255,549
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	1,287	951
Total allowance for loan losses	1,287	951
Payroll finance | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	0	0
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	687,701	616,946
Total portfolio loans	687,701	616,946
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	2,435	1,563
Total allowance for loan losses	2,435	1,563
Warehouse lending | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	0	0
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	195,690	214,242
Total portfolio loans	195,690	214,242
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	1,151	1,669
Total allowance for loan losses	1,151	1,669
Factored receivables | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	0	0
Equipment financing
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	5,523	1,413
Loans evaluated by segment, Collectively evaluated for impairment	699,227	587,902
Total portfolio loans	704,750	589,315
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	5,735	5,039
Total allowance for loan losses	5,735	5,039
Equipment financing | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	0	0
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	466,316	349,182
Total portfolio loans	466,316	349,182
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	1,887	1,062
Total allowance for loan losses	1,887	1,062
Public sector finance | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	0	0
Commercial real estate
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	16,155	14,853
Loans evaluated by segment, Collectively evaluated for impairment	3,310,026	3,104,057
Total portfolio loans	3,367,888	3,162,942
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	25,181	20,466
Total allowance for loan losses	25,181	20,466
Commercial real estate | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	41,707	44,032
Multi-family
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	0	0
Loans evaluated by segment, Collectively evaluated for impairment	1,058,771	976,710
Total portfolio loans	1,063,097	981,076
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	5,028	4,991
Total allowance for loan losses	5,028	4,991
Multi-family | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	4,326	4,366
ADC
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	6,409	9,025
Loans evaluated by segment, Collectively evaluated for impairment	212,548	216,094
Total portfolio loans	223,713	230,086
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	920	1,931
Total allowance for loan losses	920	1,931
ADC | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	4,756	4,967
Residential mortgage
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	821	2,545
Loans evaluated by segment, Collectively evaluated for impairment	690,772	692,396
Total portfolio loans	692,562	697,108
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	5,124	5,864
Total allowance for loan losses	5,124	5,864
Residential mortgage | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	969	2,167
Consumer
Loans evaluated for impairment by segment
Loans evaluated by segment, Individually evaluated for impairment	1,497	1,764
Loans evaluated by segment, Collectively evaluated for impairment	262,181	280,710
Total portfolio loans	265,268	284,068
Allowance evaluated by segment, Individually evaluated for impairment	0	0
Allowance evaluated by segment, Collectively evaluated for impairment	3,315	3,906
Total allowance for loan losses	3,315	3,906
Consumer | PCI Loans
Loans evaluated for impairment by segment
Loans evaluated by segment, Purchased credit impaired loans	$ 1,590	$ 1,594

Portfolio Loans - Accretable Yi

Portfolio Loans - Accretable Yield Discount for PCI Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 10,733	$ 12,522	$ 11,117	$ 11,211
Balances acquired in the NSBC Acquisition	0	0	0	2,200
Accretion of income	(1,001)	(1,124)	(2,200)	(2,279)
Disposals	1,145	0	1,960	0
Reclassification from non-accretable difference	0	(91)	0	175
Balance at end of period	$ 10,877	$ 11,307	$ 10,877	$ 11,307

Portfolio Loans - Loans Individ

Portfolio Loans - Loans Individually Evaluated for Impairment (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	$ 59,786	$ 56,903
Recorded investment with no related allowance recorded	55,596	55,391
Traditional C&I
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	25,251	25,221
Recorded investment with no related allowance recorded	24,870	25,221
Payroll finance
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	321	570
Recorded investment with no related allowance recorded	321	570
Equipment financing
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	5,523	1,413
Recorded investment with no related allowance recorded	5,523	1,413
Commercial real estate
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	19,702	16,365
Recorded investment with no related allowance recorded	16,155	14,853
ADC
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	6,671	9,025
Recorded investment with no related allowance recorded	6,409	9,025
Residential mortgage
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	821	2,545
Recorded investment with no related allowance recorded	821	2,545
Consumer
With no related allowance recorded:
Unpaid principal balance with no related allowance recorded	1,497	1,764
Recorded investment with no related allowance recorded	$ 1,497	$ 1,764

Portfolio Loans - Average Recor

Portfolio Loans - Average Recorded Investment and Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	$ 51,202	$ 54,798	$ 48,959	$ 46,670
Interest income recognized with no related allowance	145	96	307	253
Cash-basis interest income recognized with no related allowance	0	0	0	0
Traditional C&I
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	24,922	27,033	24,897	20,779
Interest income recognized with no related allowance	7	6	15	15
Cash-basis interest income recognized with no related allowance	0	0	0	0
Payroll finance
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	160	0	107	0
Interest income recognized with no related allowance	0	0	0	0
Cash-basis interest income recognized with no related allowance	0	0	0	0
Factored receivables
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	0	264	0	132
Interest income recognized with no related allowance		0	0	0
Cash-basis interest income recognized with no related allowance	0	0	0	0
Equipment financing
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	3,569	1,528	2,767	1,195
Interest income recognized with no related allowance	0	0	0	0
Cash-basis interest income recognized with no related allowance	0	0	0	0
Commercial real estate
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	14,206	14,536	13,263	13,456
Interest income recognized with no related allowance	84	34	173	104
Cash-basis interest income recognized with no related allowance	0	0	0	0
Multi-family
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	0	867	0	875
Interest income recognized with no related allowance	0	0	0	19
Cash-basis interest income recognized with no related allowance	0	0	0	0
ADC
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	6,180	8,558	5,811	8,595
Interest income recognized with no related allowance	54	56	119	115
Cash-basis interest income recognized with no related allowance	0	0	0	0
Residential mortgage
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	668	515	617	515
Interest income recognized with no related allowance	0	0	0	0
Cash-basis interest income recognized with no related allowance	0	0	0	0
Consumer
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	1,497	1,497	1,497	1,123
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) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Modifications [Line Items]
Current loans	$ 14,029	$ 11,032
30-59 days past due	0	253
60-89 days past due	0	0
90 plus days past due	0	0
Non- accrual	2,401	1,989
Total	16,430	13,274
Traditional C&I
Financing Receivable, Modifications [Line Items]
Current loans	569	572
30-59 days past due	0	0
60-89 days past due	0	0
90 plus days past due	0	0
Non- accrual	0	128
Total	569	700
Equipment financing
Financing Receivable, Modifications [Line Items]
Current loans	2,938	0
30-59 days past due	0	0
60-89 days past due	0	0
90 plus days past due	0	0
Non- accrual	0	29
Total	2,938	29
Commercial real estate
Financing Receivable, Modifications [Line Items]
Current loans	2,958	2,443
30-59 days past due	0	253
60-89 days past due	0	0
90 plus days past due	0	0
Non- accrual	125	0
Total	3,083	2,696
ADC
Financing Receivable, Modifications [Line Items]
Current loans	5,150	5,962
30-59 days past due	0	0
60-89 days past due	0	0
90 plus days past due	0	0
Non- accrual	921	458
Total	6,071	6,420
Residential mortgage
Financing Receivable, Modifications [Line Items]
Current loans	2,371	2,055
30-59 days past due	0	0
60-89 days past due	0	0
90 plus days past due	0	0
Non- accrual	1,355	1,374
Total	$ 3,726	$ 3,429

Portfolio Loans - Loans Modifie

Portfolio Loans - Loans Modified as TDRs (Details ) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)loan	Jun. 30, 2016USD ($)loan
Financing Receivable, Modifications [Line Items]
Number | loan	7	1
Recorded investment, Pre-modification	$ 6,161	$ 469
Recorded investment, Post-modification	$ 6,160	$ 469
Equipment financing
Financing Receivable, Modifications [Line Items]
Number | loan	2	0
Recorded investment, Pre-modification	$ 3,088	$ 0
Recorded investment, Post-modification	$ 3,088	$ 0
Commercial real estate
Financing Receivable, Modifications [Line Items]
Number | loan	2	0
Recorded investment, Pre-modification	$ 1,724	$ 0
Recorded investment, Post-modification	$ 1,724	$ 0
ADC
Financing Receivable, Modifications [Line Items]
Number | loan	1	0
Recorded investment, Pre-modification	$ 797	$ 0
Recorded investment, Post-modification	$ 797	$ 0
Residential mortgage
Financing Receivable, Modifications [Line Items]
Number | loan	2	1
Recorded investment, Pre-modification	$ 552	$ 469
Recorded investment, Post-modification	$ 551	$ 469

Allowance for Loan Losses - All

Allowance for Loan Losses - Allowance Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
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	$ 66,939	$ 53,014	$ 63,622	$ 50,145
Charge-offs	(2,289)	(2,680)	(4,098)	(4,446)
Recoveries	1,001	531	1,627	1,166
Net charge-offs	(1,288)	(2,149)	(2,471)	(3,280)
Provision / (reversal of)	4,500	5,000	9,000	9,000
Ending Allowance for Loan Losses	$ 70,151	$ 55,865	$ 70,151	$ 55,865
Annualized net charge-offs to average loans outstanding	0.05%	0.10%	0.03%	0.08%
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	$ 14,441	$ 10,905	$ 12,864	$ 9,922
Charge-offs	(164)	(429)	(851)	(918)
Recoveries	523	153	662	482
Net charge-offs	359	(276)	(189)	(436)
Provision / (reversal of)	706	428	2,831	1,571
Ending Allowance for Loan Losses	15,506	11,057	15,506	11,057
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	3,353	2,809	3,316	2,793
Charge-offs	0	0	0	0
Recoveries	1	46	4	46
Net charge-offs	1	46	4	46
Provision / (reversal of)	(772)	425	(738)	441
Ending Allowance for Loan Losses	2,582	3,280	2,582	3,280
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	1,155	1,546	951	1,936
Charge-offs	0	(28)	0	(28)
Recoveries	0	28	0	32
Net charge-offs	0	0	0	4
Provision / (reversal of)	132	(381)	336	(775)
Ending Allowance for Loan Losses	1,287	1,165	1,287	1,165
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	1,227	520	1,563	589
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net charge-offs	0	0	0	0
Provision / (reversal of)	1,208	132	872	63
Ending Allowance for Loan Losses	2,435	652	2,435	652
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	1,322	1,407	1,669	1,457
Charge-offs	(12)	(792)	(309)	(873)
Recoveries	2	17	18	41
Net charge-offs	(10)	(775)	(291)	(832)
Provision / (reversal of)	(161)	953	(227)	960
Ending Allowance for Loan Losses	1,151	1,585	1,151	1,585
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	6,039	5,393	5,039	4,925
Charge-offs	(610)	(572)	(1,080)	(1,029)
Recoveries	146	102	286	210
Net charge-offs	(464)	(470)	(794)	(819)
Provision / (reversal of)	160	423	1,490	1,240
Ending Allowance for Loan Losses	5,735	5,346	5,735	5,346
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	1,249	555	1,062	547
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net charge-offs	0	0		0
Provision / (reversal of)	638	339	825	347
Ending Allowance for Loan Losses	1,887	894	1,887	894
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	23,438	15,770	20,466	13,861
Charge-offs	(944)	(100)	(1,026)	(104)
Recoveries	98	53	100	74
Net charge-offs	(846)	(47)	(926)	(30)
Provision / (reversal of)	2,589	1,800	5,641	3,692
Ending Allowance for Loan Losses	25,181	17,523	25,181	17,523
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	4,102	2,996	4,991	2,741
Charge-offs	0	(18)	0	(18)
Recoveries	0	0	0	2
Net charge-offs	0	(18)	0	(16)
Provision / (reversal of)	926	485	37	738
Ending Allowance for Loan Losses	5,028	3,463	5,028	3,463
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	1,170	2,157	1,931	2,009
Charge-offs	(22)	0	(22)	0
Recoveries	133	104	269	104
Net charge-offs	111	104	247	104
Provision / (reversal of)	(361)	(219)	(1,258)	(71)
Ending Allowance for Loan Losses	920	2,042	920	2,042
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	5,715	4,850	5,864	5,007
Charge-offs	(120)	(209)	(279)	(433)
Recoveries	10	1	159	29
Net charge-offs	(110)	(208)	(120)	(404)
Provision / (reversal of)	(481)	233	(620)	272
Ending Allowance for Loan Losses	5,124	4,875	5,124	4,875
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	3,728	4,106	3,906	4,358
Charge-offs	(417)	(532)	(531)	(1,043)
Recoveries	88	27	129	146
Net charge-offs	(329)	(505)	(402)	(897)
Provision / (reversal of)	(84)	382	(189)	522
Ending Allowance for Loan Losses	$ 3,315	$ 3,983	$ 3,315	$ 3,983

Allowance for Loan Losses - Nar

Allowance for Loan Losses - Narrative (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Receivables [Abstract]
Maximum loan balance for credit risk to be evaluated on a homogeneous basis	$ 500,000
Loss
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	0	$ 0
Special mention
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	102,996,000	104,569,000
Special mention | Traditional C&I
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	18,713,000	12,125,000
Special mention | Asset-based lending
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	$ 10,937,000	$ 35,373,000

Allowance for Loan Losses - Val

Allowance for Loan Losses - Valuation Allowances Recorded Against Portfolio Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Special mention
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	$ 102,996	$ 104,569
Special mention | Traditional C&I
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	18,713	12,125
Special mention | Asset-based lending
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	10,937	35,373
Special mention | Payroll finance
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	15,113	0
Special mention | Factored receivables
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	633	185
Special mention | Equipment financing
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	6,763	2,128
Special mention | Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	44,268	39,190
Special mention | Multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	3,541	7,072
Special mention | ADC
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	924	6,899
Special mention | Residential mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	970	951
Special mention | Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	1,134	646
Substandard
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	97,476	95,152
Substandard | Traditional C&I
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	40,096	28,977
Substandard | Asset-based lending
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	0	0
Substandard | Payroll finance
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	2,342	820
Substandard | Factored receivables
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	191	433
Substandard | Equipment financing
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	3,869	3,397
Substandard | Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	26,787	29,463
Substandard | Multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	642	658
Substandard | ADC
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	4,414	8,870
Substandard | Residential mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	12,749	15,796
Substandard | Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	6,386	6,738
Doubtful
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	895	442
Doubtful | Traditional C&I
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	894	442
Doubtful | Asset-based lending
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	0	0
Doubtful | Payroll finance
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	0	0
Doubtful | Factored receivables
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	0	0
Doubtful | Equipment financing
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	0	0
Doubtful | Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	0	0
Doubtful | Multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	0	0
Doubtful | ADC
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	0	0
Doubtful | Residential mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	0	0
Doubtful | Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Gross loans by segment	$ 1	$ 0

Goodwill and Other Intangible69

Goodwill and Other Intangible Assets - Balance of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 696,600	$ 696,600
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	61,884	66,353
Core deposits
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	34,161	37,455
Customer lists
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	6,769	7,683
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	417	625
Trade name
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	20,500	20,500
Fair value of below market leases
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	$ 37	$ 90

Goodwill and Other Intangible70

Goodwill and Other Intangible Assets - Future Amortization Expense (Details) $ in Thousands	Jun. 30, 2017USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2017	$ 4,369
2,018	7,285
2,019	6,074
2,020	5,428
2,021	5,022
2,022	4,522
Thereafter	8,684
Total	$ 41,384

Deposits - Deposit Balances (De

Deposits - Deposit Balances (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Deposits [Abstract]
Non-interest bearing demand	$ 3,311,860	$ 3,239,332
Interest bearing demand	2,059,940	2,220,456
Savings	795,899	747,031
Money market	3,732,657	3,277,686
Certificates of deposit	602,354	583,754
Total deposits	$ 10,502,710	$ 10,068,259

Deposits - Narrative (Details)

Deposits - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Deposits [Abstract]
Municipal deposits	$ 1,297,244	$ 1,270,921

Deposits - Brokered Deposits (D

Deposits - Brokered Deposits (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
List of Company's Brokered deposits
Brokered deposits	$ 885,503	$ 831,629
Interest bearing demand
List of Company's Brokered deposits
Brokered deposits	46,228	426,437
Money market
List of Company's Brokered deposits
Brokered deposits	473,268	246,572
Money market - reciprocal brokered deposits
List of Company's Brokered deposits
Brokered deposits	148,736	153,060
Savings
List of Company's Brokered deposits
Brokered deposits	0	5,560
Certificates of deposit - CDARs one way
List of Company's Brokered deposits
Brokered deposits	$ 217,271	$ 0

Borrowings - Borrowings and Wei

Borrowings - Borrowings and Weighted Average Interest Rates (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016	Jul. 02, 2013
By period to maturity:
Less than one year, Amount	$ 1,877,596,000	$ 1,397,642,000
Less than one year, Rate	1.28%	0.87%
One to two years, Amount	$ 461,635,000	$ 311,469,000
One to two years, Rate	2.24%	2.53%
Two to three years, Amount	$ 100,000,000	$ 75,000,000
Two to three years, Rate	1.64%	1.50%
Three to four years, Amount	$ 50,000,000	$ 50,000,000
Three to four years, Rate	1.68%	1.38%
Four to five years, Amount	$ 0	$ 50,000,000
Four to five years, Rate	0.00%	1.68%
Greater than five years, Amount	$ 172,607,000	$ 172,501,000
Greater than five years, Rate	5.45%	5.45%
Total borrowings, Amount	$ 2,661,838,000	$ 2,056,612,000
Total borrowings, Rate	1.73%	1.56%
FHLB borrowings
By period to maturity:
Total borrowings, Amount	$ 2,290,000,000	$ 1,791,000,000
Total borrowings, Rate	1.34%	1.01%
Repurchase agreements
By period to maturity:
Total borrowings, Amount	$ 22,596,000	$ 16,642,000
Total borrowings, Rate	0.73%	0.75%
Federal funds purchased
By period to maturity:
Total borrowings, Amount	$ 100,000,000	$ 0
Total borrowings, Rate	1.31%	0.00%
Senior Notes
By period to maturity:
Total borrowings, Amount	$ 76,635,000	$ 76,469,000	$ 100,000,000
Total borrowings, Rate	5.98%	5.98%
Subordinated Notes
By period to maturity:
Total borrowings, Amount	$ 172,607,000	$ 172,501,000
Total borrowings, Rate	5.45%	5.45%

Borrowings - Narrative (Details

Borrowings - Narrative (Details) - USD ($)	Sep. 02, 2016	Mar. 29, 2016	Jul. 02, 2013	Sep. 30, 2016	Jun. 30, 2017	Dec. 31, 2016	Sep. 05, 2016	Jun. 30, 2016
Debt Instrument [Line Items]
Bank pledged mortgages					$ 2,562,880,000	$ 2,050,982,000
Increased borrowing capacity by pledging securities					1,750,000,000
Long-term debt					$ 2,661,838,000	$ 2,056,612,000
Private placement discount rate			1.75%
Interest expense cost over the life of Senior note					5.98%
Minimum
Debt Instrument [Line Items]
Repurchase agreements maturity					1 day	1 day
Maximum
Debt Instrument [Line Items]
Repurchase agreements maturity					45 days	45 days
FHLB Borrowings
Debt Instrument [Line Items]
Unused borrowing capacity					$ 1,115,797,000
Long-term debt					2,290,000,000	$ 1,791,000,000
Federal funds purchased
Debt Instrument [Line Items]
Long-term debt					100,000,000	0
Senior Notes
Debt Instrument [Line Items]
Long-term debt			$ 100,000,000		76,635,000	76,469,000
Fixed interest rate (percent)			5.50%
Debt issuance costs			$ 303,000
Unamortized discount					365,000			$ 531,000
Amount of debt redeemed				$ 23,000,000
Subordinated notes
Debt Instrument [Line Items]
Long-term debt					172,607,000	172,501,000
Private placement discount rate	1.25%	1.25%
Debt issuance costs	$ 275,000	$ 500,000
Unamortized discount					$ 2,393,000
Principal amount	$ 65,000,000	$ 110,000,000
Interest rate		5.25%
Issue premium	0.50%
Effective yield					5.45%
Subordinated notes | Three-month LIBOR
Debt Instrument [Line Items]
Basis spread on one-month LIBOR		3.937%
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Revolving line of credit amount							$ 25,000,000
Revolving line of credit balance					$ 0	$ 0
Required balance					$ 0
Duration of minimum outstanding balance					30 days
Line of Credit | London Interbank Offered Rate (LIBOR) | Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on one-month LIBOR					1.25%

Derivatives - Narrative (Detail

Derivatives - Narrative (Details) $ in Thousands	Jun. 30, 2017USD ($)
Derivative Instruments and Hedges, Assets [Abstract]
Cash paid as settled0to-market for net fair value of CME interest rate swaps	$ 2,389

Derivatives - Derivative Inform

Derivatives - Derivative Information (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Interest rate swap | Other assets
Summary of derivatives
Notional amount	$ 430,332
Average maturity (in years)	5 years 10 months 17 days
Weighted average fixed rate	4.13%
Fair value	$ 3,864
Interest rate swap | Other liabilities
Summary of derivatives
Notional amount	$ 430,332
Average maturity (in years)	5 years 10 months 17 days
Weighted average fixed rate	4.13%
Fair value	$ (6,253)
3rd party interest rate swap | One Month Libor
Summary of derivatives
Basis spread	2.29%	2.29%
3rd party interest rate swap | Other assets
Summary of derivatives
Notional amount	$ 166,058	$ 296,282
Average maturity (in years)		5 years 7 months 18 days
Weighted average fixed rate		3.94%
Fair value	296	$ 2,088
3rd party interest rate swap | Other liabilities
Summary of derivatives
Notional amount	264,274
Fair value	$ (3,130)
Customer interest rate swap | One Month Libor
Summary of derivatives
Basis spread	2.29%	2.29%
Customer interest rate swap | Other assets
Summary of derivatives
Notional amount	$ 264,274
Fair value	3,568
Customer interest rate swap | Other liabilities
Summary of derivatives
Notional amount	166,058	$ 296,282
Average maturity (in years)		5 years 7 months 18 days
Weighted average fixed rate		3.94%
Fair value	$ (3,123)	$ (2,088)

Income Taxes (Details)

Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Efftective tax rate reconciliation:
Income before income tax expense	$ 62,719,000	$ 56,182,000	$ 119,495,000	$ 92,191,000
Federal statutory rate	35.00%	35.00%
Tax at Federal statutory rate of 35%	$ 21,951,000	$ 19,664,000	41,823,000	32,267,000
State and local income taxes, net of Federal tax benefit	2,497,000	2,992,000	4,771,000	4,985,000
Tax-exempt interest, net of disallowed interest	(3,790,000)	(1,958,000)	(7,274,000)	(3,792,000)
Bank owned life insurance income	(560,000)	(430,000)	(1,022,000)	(875,000)
Non-deductible acquisition related costs	614,000	0	956,000	0
Low income housing tax credits	(138,000)	(180,000)	(277,000)	(234,000)
Stock-based compensation benefit	(64,000)	0	(806,000)	0
Other, net	(191,000)	(1,676,000)	(143,000)	(1,696,000)
Actual income tax expense	$ 20,319,000	$ 18,412,000	$ 38,028,000	$ 30,655,000
Effective income tax rate	32.40%	32.80%	31.80%	33.30%
Components of deferred tax assets and liabilities:
Net deferred tax asset	$ 34,259,000		$ 34,259,000		$ 40,548,000
Valuation allowance	$ 0		$ 0		$ 0

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	May 28, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares remaining that are authorized and available for future grant	3,291,678		3,639,838
Grant of share options (in shares)	0	0
Exercise price (USD per share)	$ 0
Intrinsic value of options outstanding	$ 10,826
Intrinsic value of options exercisable	$ 9,668
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of contract	10 years
Weighted-average period total unrecognized compensation cost related to non-vested shares granted	4 months 14 days
Stock options | Stock Compensation Grants associated with legacy Sterling Merger
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price (USD per share)	$ 14.25
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
Fully Vested legacy Sterling options | Sterling Bancorp (Legacy)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant of share options (in shares)	104,152
Restricted Stock Units (RSUs) | Stock Compensation Grants associated with legacy Sterling Merger
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value (USD per share)	$ 11.72
Non-vested stock awards/performance units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period, other than options (in shares)	393,581
Weighted average grant date fair value (USD per share)	$ 24.15
Weighted-average period total unrecognized compensation cost related to non-vested shares granted	1 year 9 months 8 days
2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized				2,800,000
Number of shares granted for each share received	1
Sterling Bancorp 2013 Employment Inducement Award Plan | Sterling Bancorp (Legacy)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant of share options (in shares)	95,991
Prior Plan | Restricted Stock Units (RSUs) | Sterling Bancorp (Legacy)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period, other than options (in shares)	255,973

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock-based Compensation Activity (Details) - $ / shares	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Shares available for grant
Beginning balance (in shares)	3,639,838
Granted (in shares)	(393,581)
Stock awards vested (in shares)	0
Forfeited (in shares)	46,867
Canceled/expired (in shares)	(1,446)
Ending balance (in shares)	3,291,678
Stock options outstanding - Number of shares
Beginning balance (in shares)	1,004,119
Granted (in shares)	0	0
Exercised (in shares)	(111,648)
Forfeited (in shares)	0
Canceled/expired (in shares)	(1,000)
Ending balance (in shares)	891,471
Exercisable at June 30, 2017 (in shares)	774,551
Stock options outstanding - Weighted average exercise price
Beginning balance (USD per share)	$ 11
Granted (USD per share)	0
Exercised (USD per share)	10.11
Forfeited (USD per share)	0
Canceled/expired (USD per share)	13.18
Ending balance (USD per share)	11.11
Exercisable at June 30, 2017 (USD per share)	$ 10.77
Non-vested stock awards/performance units
Non-vested stock awards/stock units outstanding - Number of shares
Beginning balance (in shares)	932,223
Granted (in shares)	393,581
Stock awards vested (in shares)	(151,862)
Forfeited (in shares)	(46,867)
Ending balance (in shares)	1,127,075
Non-vested stock awards/stock units outstanding - Weighted average grant date fair value
Beginning balance (USD per share)	$ 14.09
Granted (USD per share)	24.15
Stock awards vested (USD per share)	14.25
Forfeited (USD per share)	18.50
Ending balance (USD per share)	$ 17.40

Stock-Based Compensation - St81

Stock-Based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 1,897	$ 1,747	$ 3,633	$ 3,287
Stock-based compensation expense, income tax benefit	617	573	1,181	1,095
Proceeds from stock option exercises	731	755	1,224	1,265
Unrecognized stock-based compensation, stock options	43		43
Unrecognized stock-based compensation, non-vested stock awards/performance units	13,299		13,299
Total unrecognized stock-based compensation expense	13,342		13,342
Stock options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	48	125	98	251
Non-vested stock awards/performance units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 1,849	$ 1,622	$ 3,535	$ 3,036

Other Post-Retirement Plans - N

Other Post-Retirement Plans - Net Pension and Post-retirement Expense (Details) - Other Post-Retirement Benefit Plans - United States Plan - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	101	105	201	209
Net amortization and deferral	9	20	18	32
Total other post-retirement expense	$ 110	$ 125	$ 219	$ 241

Other Post-Retirement Plans -83

Other Post-Retirement Plans - Narrative (Details) - Other Post-Retirement Benefit Plans - United States Plan - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to fund SERP	$ 96	$ 53
Other liabilities
Defined Benefit Plan Disclosure [Line Items]
Total post retirement plan liabilities	$ 12,248		$ 12,125

Other Non-interest Expense (Det

Other Non-interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other Income and Expenses [Abstract]
Advertising and promotion	$ 834	$ 985	$ 1,385	$ 1,536
Professional fees	2,478	2,607	4,683	5,080
Data and check processing	2,421	2,261	4,890	4,015
Insurance & surety bond premium	687	897	1,224	1,682
Other	4,411	4,915	8,818	10,081
Total other non-interest expense	$ 10,831	$ 11,665	$ 21,000	$ 22,394

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Computation of basic and diluted earnings per share:
Net income	$ 42,400	$ 37,770	$ 81,467	$ 61,536
Weighted average common shares outstanding for computation of basic EPS	135,317,866	130,081,465	135,241,034	129,953,397
Common-equivalent shares due to the dilutive effect of stock options and unvested performance share grants	605,031	607,264	626,827	568,624
Weighted average common shares for computation of diluted EPS	135,922,897	130,688,729	135,867,861	130,522,021
Basic (loss) earnings per common share (USD per share)	$ 0.31	$ 0.29	$ 0.60	$ 0.47
Diluted (loss) earnings per common share (USD per share)	$ 0.31	$ 0.29	$ 0.60	$ 0.47
Weighted average common shares that could be exercised that were anti-dilutive for the period	0	0	0	0

Stockholders' Equity - Complian

Stockholders' Equity - Compliance with Regulatory Capital Requirements (Schedule) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Sterling National Bank
Common equity tier 1 to RWA:
Tier 1 common equity, Actual, Capital amount	$ 1,243,272	$ 1,176,497
Tier 1 common equity, Actual, Ratio	10.64%	10.87%
Tier 1 common equity required for minimum capital adequacy, phase-in schedule, Capital amount	$ 671,582	$ 554,663
Tier 1 common equity required for minimum capital adequacy, phase-in schedule, Ratio	5.75%	5.125%
Tier 1 common equity required for minimum capital adequacy, fully phased-in, Capital amount	$ 817,578	$ 757,588
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	$ 759,180	$ 703,475
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	$ 1,243,272	$ 1,176,497
Tier 1 risk-based capital, Ratio	10.64%	10.87%
Tier 1 risk-based capital required for minimum capital adequacy, phase-in schedule, Capital amount	$ 846,778	$ 717,003
Tier 1 risk-based capital required for minimum capital adequacy, phase-in schedule, Ratio	7.25%	6.625%
Tier 1 risk-based capital required for minimum capital adequacy, fully phased-in, Capital amount	$ 992,774	$ 919,928
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	$ 934,375	$ 865,815
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	$ 1,486,574	$ 1,413,165
Total risk-based capital, Ratio	12.73%	13.06%
Total risk-based capital required for minimum capital adequacy, phase-in schedule, Capital amount	$ 1,080,371	$ 933,457
Total risk-based capital required for minimum capital adequacy, phase-in schedule, Ratio	9.25%	8.625%
Total risk-based capital required for minimum capital adequacy, fully phased-in, Capital amount	$ 1,226,367	$ 1,136,382
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	$ 1,167,969	$ 1,082,269
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	$ 1,243,272	$ 1,176,497
Tier 1 (core) capital, Ratio	8.89%	9.08%
Tier 1 (core) capital required for minimum capital adequacy, phase-in schedule, Capital amount	$ 559,607	$ 518,308
Tier 1 (core) capital required for minimum capital adequacy, phase-in schedule, Ratio	4.00%	4.00%
Tier 1 (core) capital required for minimum capital adequacy, fully phased-in, Capital amount	$ 559,607	$ 518,308
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	$ 699,509	$ 647,885
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	$ 1,220,876	$ 1,160,739
Tier 1 common equity, Actual, Ratio	10.46%	10.73%
Tier 1 common equity required for minimum capital adequacy, phase-in schedule, Capital amount	$ 671,374	$ 554,474
Tier 1 common equity required for minimum capital adequacy, phase-in schedule, Ratio	5.75%	5.125%
Tier 1 common equity required for minimum capital adequacy, fully phased-in, Capital amount	$ 817,325	$ 757,330
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	$ 1,220,876	$ 1,160,739
Tier 1 risk-based capital, Ratio	10.46%	10.73%
Tier 1 risk-based capital required for minimum capital adequacy, phase-in schedule, Capital amount	$ 846,515	$ 716,759
Tier 1 risk-based capital required for minimum capital adequacy, phase-in schedule, Ratio	7.25%	6.625%
Tier 1 risk-based capital required for minimum capital adequacy, fully phased-in, Capital amount	$ 992,466	$ 919,615
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	$ 1,446,070	$ 1,377,547
Total risk-based capital, Ratio	12.38%	12.73%
Total risk-based capital required for minimum capital adequacy, phase-in schedule, Capital amount	$ 1,080,036	$ 933,139
Total risk-based capital required for minimum capital adequacy, phase-in schedule, Ratio	9.25%	8.625%
Total risk-based capital required for minimum capital adequacy, fully phased-in, Capital amount	$ 1,225,987	$ 1,135,995
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	$ 1,220,876	$ 1,160,739
Tier 1 (core) capital, Ratio	8.73%	8.95%
Tier 1 (core) capital required for minimum capital adequacy, phase-in schedule, Capital amount	$ 559,476	$ 518,733
Tier 1 (core) capital required for minimum capital adequacy, phase-in schedule, Ratio	4.00%	4.00%
Tier 1 (core) capital required for minimum capital adequacy, fully phased-in, Capital amount	$ 559,476	$ 518,733
Tier 1 (core) capital required for minimum capital adequacy, fully phased-in, Ratio	4.00%	4.00%

Stockholders' Equity - Narrativ

Stockholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	Nov. 22, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Class of Stock [Line Items]
Aggregate dividend capacity without prior regulatory approval		$ 189,659
Capital raise, shares	4,370,000
Capital raise, price per share (USD per share)	$ 20.95
Total proceeds from public offering	$ 92,863
Net proceeds from public offering	$ 90,995
Shares available for repurchase program		776,713
Sterling Bancorp
Class of Stock [Line Items]
Tier 2 capital		$ 154,296
Shares repurchased under repurchase program		0	0
Sterling National Bank
Class of Stock [Line Items]
Tier 1 (core) capital required for minimum capital adequacy, fully phased-in, Capital amount		$ 559,607		$ 518,308
Liquidation account		13,300
Subordinated notes | Sterling National Bank
Class of Stock [Line Items]
Tier 2 capital		$ 172,607

Commitments and Contingencies88

Commitments and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Rent expense	$ 2,138	$ 2,422	$ 4,388	$ 5,721
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Remainder of 2017	5,051		5,051
2,018	9,702		9,702
2,019	8,145		8,145
2,020	7,229		7,229
2,021	5,780		5,780
2,022	4,640		4,640
2023 and thereafter	14,452		14,452
Total future minimum payments	54,999		54,999
Loan origination commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Lending-related instruments	271,108		271,108		$ 245,319
Unused lines of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Lending-related instruments	916,824		916,824		968,288
Letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Lending-related instruments	$ 118,385		$ 118,385		$ 114,582

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Other securities:
Securities available for sale	$ 2,095,872	$ 1,727,417
Fair Value, Inputs, Level 1
Other securities:
Securities available for sale	0	0
Swaps	0	0
Swaps	0	0
Fair Value, Inputs, Level 2
Other securities:
Securities available for sale	2,095,872	1,727,417
Swaps	3,864	2,088
Swaps	6,253	2,088
Fair Value, Inputs, Level 3
Other securities:
Securities available for sale	0	0
Swaps	0	0
Swaps	0	0
Fair Value, Measurements, Recurring
Residential MBS(1):
Mortgage-backed securities-residential	1,529,293	1,250,162
Other securities:
Total investment securities available for sale	566,579	477,255
Securities available for sale	2,095,872	1,727,417
Swaps	3,864	2,088
Total assets	2,099,736	1,729,505
Swaps	(6,253)	(2,088)
Total liabilities	(6,253)	(2,088)
Fair Value, Measurements, Recurring | Agency-backed
Residential MBS(1):
Mortgage-backed securities-residential	1,458,498	1,193,481
Fair Value, Measurements, Recurring | CMO/Other MBS
Residential MBS(1):
Mortgage-backed securities-residential	70,795	56,681
Fair Value, Measurements, Recurring | Federal agencies
Other securities:
Total investment securities available for sale	231,060	193,979
Fair Value, Measurements, Recurring | Corporate bonds
Other securities:
Total investment securities available for sale	71,288	42,506
Fair Value, Measurements, Recurring | State and municipal
Other securities:
Total investment securities available for sale	264,231	240,770
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Residential MBS(1):
Mortgage-backed securities-residential	0	0
Other securities:
Total investment securities available for sale	0	0
Securities available for sale	0	0
Swaps	0	0
Total assets	0	0
Swaps	0	0
Total liabilities	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Agency-backed
Residential MBS(1):
Mortgage-backed securities-residential	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | CMO/Other MBS
Residential MBS(1):
Mortgage-backed securities-residential	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Federal agencies
Other securities:
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Corporate bonds
Other securities:
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | State and municipal
Other securities:
Total investment securities available for sale
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Residential MBS(1):
Mortgage-backed securities-residential	1,529,293	1,250,162
Other securities:
Total investment securities available for sale	566,579	477,255
Securities available for sale	2,095,872	1,727,417
Swaps	3,864	2,088
Total assets	2,099,736	1,729,505
Swaps	(6,253)	(2,088)
Total liabilities	(6,253)	(2,088)
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Agency-backed
Residential MBS(1):
Mortgage-backed securities-residential	1,458,498	1,193,481
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | CMO/Other MBS
Residential MBS(1):
Mortgage-backed securities-residential	70,795	56,681
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Federal agencies
Other securities:
Total investment securities available for sale	231,060	193,979
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Corporate bonds
Other securities:
Total investment securities available for sale	71,288	42,506
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | State and municipal
Other securities:
Total investment securities available for sale	264,231	240,770
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Residential MBS(1):
Mortgage-backed securities-residential	0	0
Other securities:
Total investment securities available for sale	0	0
Securities available for sale	0	0
Swaps	0	0
Total assets	0	0
Swaps	0	0
Total liabilities	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Agency-backed
Residential MBS(1):
Mortgage-backed securities-residential	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | CMO/Other MBS
Residential MBS(1):
Mortgage-backed securities-residential	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Federal agencies
Other securities:
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Corporate bonds
Other securities:
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | State and municipal
Other securities:
Total investment securities available for sale	$ 0	$ 0

Fair Value Measurements - Impai

Fair Value Measurements - Impaired Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Quoted Prices in Active markets for Identical Assets Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	$ 0	$ 0
Significant Other Observable Inputs Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	0	0
Significant Unobservable Inputs Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	10,111,906	9,461,469
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	6,163	6,786
Fair Value, Measurements, Nonrecurring | C&I
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	177
Fair Value, Measurements, Nonrecurring | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	5,986	6,786
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active markets for Identical Assets Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	0	0
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active markets for Identical Assets Level 1 | C&I
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	0
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active markets for Identical Assets Level 1 | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	0	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	0	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs Level 2 | C&I
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs Level 2 | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	0	0
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	6,163	6,786
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs Level 3 | C&I
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	177
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs Level 3 | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, impaired, net	$ 5,986	$ 6,786

Fair Value Measurements - Sum91

Fair Value Measurements - Summary of Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available for sale	$ 2,095,872	$ 1,727,417
Securities held to maturity	1,449,975	1,357,997
Senior Notes	(76,635)	(76,469)
Subordinated Notes	(172,607)	(172,501)
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	282,167	293,646
Securities available for sale	2,095,872	1,727,417
Securities held to maturity	1,456,304	1,391,421
Loans held for sale		41,889
Portfolio loans, net	10,162,166	9,463,608
Accrued interest receivable on securities	18,497	16,495
Accrued interest receivable on loans	29,050	26,824
FHLB stock and FRB stock	160,241	135,098
Swaps	3,864	2,088
Non-maturity deposits	(9,900,356)	(9,484,505)
Certificates of deposit	(602,354)	(583,754)
FHLB borrowings	(2,290,000)	(1,791,000)
Other borrowings	(122,596)	(16,642)
Senior Notes	(76,635)	(76,469)
Subordinated Notes	(172,607)	(172,501)
Mortgage escrow funds	(16,431)	(13,572)
Accrued interest payable on deposits	(691)	(663)
Accrued interest payable on borrowings	(7,106)	(3,621)
Swaps	(6,253)	(2,088)
Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	282,167	293,646
Securities available for sale	0	0
Securities held to maturity	0	0
Loans held for sale		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
Non-maturity deposits	(9,900,356)	(9,484,505)
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
Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Securities available for sale	2,095,872	1,727,417
Securities held to maturity	1,449,975	1,357,997
Loans held for sale		41,889
Portfolio loans, net	0	0
Accrued interest receivable on securities	18,497	16,495
Accrued interest receivable on loans	0	0
FHLB stock and FRB stock	0	0
Swaps	3,864	2,088
Non-maturity deposits	0	0
Certificates of deposit	(600,491)	(582,811)
FHLB borrowings	(2,287,449)	(1,788,676)
Other borrowings	(122,596)	(16,642)
Senior Notes	(79,447)	(79,283)
Subordinated Notes	(178,234)	(169,813)
Mortgage escrow funds	(16,431)	(13,572)
Accrued interest payable on deposits	(691)	(663)
Accrued interest payable on borrowings	(7,106)	(3,621)
Swaps	(6,253)	(2,088)
Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Securities available for sale	0	0
Securities held to maturity	0	0
Loans held for sale		0
Portfolio loans, net	10,111,906	9,461,469
Accrued interest receivable on securities	0	0
Accrued interest receivable on loans	29,050	26,824
FHLB stock and FRB stock	0	0
Swaps	0	0
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

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Maximum loan balance for credit risk to be evaluated on a homogeneous basis	$ 500,000
Changes in fair value recognized on provisions on loans held by the Company	225,000	$ 0
Mortgage servicing rights	$ 999,000		$ 1,024,000
Percentage appraisals discounted	22.00%		22.00%
Assets taken in foreclosure, defaulted loans and facilities held for sale	$ 10,198,000		$ 13,619,000
Changes in fair value recognized through income for foreclosed assets held by the Company	$ 1,293,000	$ 582,000
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Prepayment speed	1.00%		1.00%
Market discount rate	9.00%		8.50%
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Prepayment speed	4.15%		5.55%
Market discount rate	12.00%		11.50%
Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Prepayment speed	1.73%		1.74%
Market discount rate	10.29%		9.73%
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Portfolio loans, net	$ 55,596,000		$ 55,391,000
Commercial loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Maximum loan balance for credit risk to be evaluated on a homogeneous basis	250,000
Residential loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Maximum loan balance for credit risk to be evaluated on a homogeneous basis	$ 500,000

Accumulated Other Comprehensi93

Accumulated Other Comprehensive Income (Loss) - Components of AOCI (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Equity [Abstract]
Net unrealized holding loss on available for sale securities	$ (20,998)	$ (37,417)
Related income tax benefit	8,294	14,780
Available for sale securities AOCI, net of tax	(12,704)	(22,637)
Net unrealized holding loss on securities transferred to held to maturity	(4,907)	(5,395)
Related income tax benefit	1,938	2,131
Securities transferred to held to maturity AOCI, net of tax	(2,969)	(3,264)
Net unrealized holding loss on retirement plans	(1,149)	(1,213)
Related income tax benefit	454	479
Retirement plans AOCI, net of tax	(695)	(734)
AOCI	$ (16,368)	$ (26,635)

Accumulated Other Comprehensi94

Accumulated Other Comprehensive Income (Loss) - Changes in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance			$ 1,855,183	$ 1,665,073
Other comprehensive gain (loss) before reclassification	$ 7,061	$ 8,984	9,780	24,800
Amounts reclassified from AOCI	292	(2,213)	487	(1,746)
Total other comprehensive income	7,353	6,771	10,267	23,054
Balance	1,931,383	1,735,994	1,931,383	1,735,994
Net unrealized holding (loss) gain on available for sale securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance	(19,904)	9,115	(22,637)	(6,999)
Other comprehensive gain (loss) before reclassification	7,061	8,984	9,780	24,800
Amounts reclassified from AOCI	139	(2,708)	153	(2,410)
Total other comprehensive income	7,200	6,276	9,933	22,390
Balance	(12,704)	15,391	(12,704)	15,391
Net unrealized holding (loss)gain on securities transferred to held to maturity
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance	(3,117)	(4,200)	(3,264)	(4,155)
Other comprehensive gain (loss) before reclassification	0	0	0	0
Amounts reclassified from AOCI	148	469	295	424
Total other comprehensive income	148	469	295	424
Balance	(2,969)	(3,731)	(2,969)	(3,731)
Net unrealized holding (loss) gain on retirement plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance	(700)	(756)	(734)	(970)
Other comprehensive gain (loss) before reclassification	0	0	0	0
Amounts reclassified from AOCI	5	26	39	240
Total other comprehensive income	5	26	39	240
Balance	(695)	(730)	(695)	(730)
Accumulated other comprehensive (loss) income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance	(23,721)	4,159	(26,635)	(12,124)
Balance	$ (16,368)	$ 10,930	$ (16,368)	$ 10,930

Pending Merger with Astoria F95

Pending Merger with Astoria Financial Corporation - Pro Forma Information (Details) - Astoria Financial Corporation $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Pro Forma Condensed Income Statement Information:
Net interest income	$ 818,907
Provision for loan losses	10,849
Income before income taxes	385,185
Net income	251,173
Pro Forma Condensed Combined Balance Sheet Information:
Portfolio loans, net	19,530,795
Total assets	29,510,290
Deposits	18,956,004
Total stockholders’ equity	$ 4,218,852

Pending Merger with Astoria F96

Pending Merger with Astoria Financial Corporation - Narrative (Details) - USD ($) $ in Thousands	Mar. 07, 2017	Jun. 30, 2017	Jun. 30, 2016
Business Acquisition [Line Items]
Merger agreement, value of stock-for-stock transaction		$ 0	$ 351,452
Astoria Financial Corporation
Business Acquisition [Line Items]
Merger agreement, value of stock-for-stock transaction	$ 2,233,873
Number of shares received by Astoria shareholders for each share of acquiree's stock	0.875
Upon closing, percentage of stock owned by Sterling shareholders	60.00%
Upon closing, percentage of stock owned by Astoria shareholders	40.00%