Provident Financial Services (PFS) 10-Q 8 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Aug. 01, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Trading Symbol	PFS
Entity Registrant Name	PROVIDENT FINANCIAL SERVICES INC
Entity Central Index Key	1,178,970
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		66,755,350

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
ASSETS
Cash and due from banks	$ 101,028	$ 92,508
Short-term investments	52,374	51,789
Total cash and cash equivalents	153,402	144,297
Securities available for sale, at fair value	1,038,968	1,040,386
Investment securities held to maturity (fair value of $501,338 at June 30, 2017 (unaudited) and $489,287 at December 31, 2016)	492,737	488,183
Federal Home Loan Bank stock	78,949	75,726
Loans	7,031,048	7,003,486
Less allowance for loan losses	62,862	61,883
Net loans	6,968,186	6,941,603
Foreclosed assets, net	6,603	7,991
Banking premises and equipment, net	80,349	84,092
Accrued interest receivable	27,090	27,082
Intangible assets	421,499	422,937
Bank-owned life insurance	188,432	188,527
Other assets	83,068	79,641
Total assets	9,539,283	9,500,465
Deposits:
Demand deposits	4,743,488	4,803,426
Savings deposits	1,107,051	1,099,020
Certificates of deposit of $100,000 or more	308,208	290,295
Other time deposits	341,790	360,888
Total deposits	6,500,537	6,553,629
Mortgage escrow deposits	28,941	24,452
Borrowed funds	1,676,219	1,612,745
Other liabilities	49,985	57,858
Total liabilities	8,255,682	8,248,684
Stockholders’ Equity:
Preferred stock, $0.01 par value, 50,000,000 shares authorized, none issued	0	0
Common stock, $0.01 par value, 200,000,000 shares authorized, 83,209,293 shares issued and 66,441,753 shares outstanding at June 30, 2017 and 66,082,283 outstanding at December 31, 2016	832	832
Additional paid-in capital	1,008,479	1,005,777
Retained earnings	573,350	550,768
Accumulated other comprehensive loss	(1,277)	(3,397)
Treasury stock	(261,215)	(264,221)
Unallocated common stock held by the Employee Stock Ownership Plan	(36,568)	(37,978)
Common stock acquired by the Directors’ Deferred Fee Plan	(5,511)	(5,846)
Deferred compensation – Directors’ Deferred Fee Plan	5,511	5,846
Total stockholders’ equity	1,283,601	1,251,781
Total liabilities and stockholders’ equity	$ 9,539,283	$ 9,500,465

Consolidated Statements of Fin3

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Investment securities held to maturity, fair value	$ 501,338	$ 489,287
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	83,209,293	83,209,293
Common stock, shares outstanding (in shares)	66,441,753	66,082,283

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest income:
Real estate secured loans	$ 47,009	$ 44,916	$ 93,020	$ 89,149
Commercial loans	18,100	15,374	34,920	30,326
Consumer loans	5,196	5,394	10,210	11,030
Securities available for sale and Federal Home Loan Bank Stock	6,548	5,718	13,111	11,498
Investment securities held to maturity	3,292	3,331	6,540	6,662
Deposits, Federal funds sold and other short-term investments	298	72	555	114
Total interest income	80,443	74,805	158,356	148,779
Interest expense:
Deposits	4,653	4,135	9,105	7,956
Borrowed funds	6,735	6,760	13,161	13,844
Total interest expense	11,388	10,895	22,266	21,800
Net interest income	69,055	63,910	136,090	126,979
Provision for loan losses	1,700	1,700	3,200	3,200
Net interest income after provision for loan losses	67,355	62,210	132,890	123,779
Non-interest income:
Fees	7,255	6,711	13,260	13,172
Wealth management income	4,509	4,511	8,722	8,822
Bank-owned life insurance	2,549	1,369	3,938	2,701
Net gain on securities transactions	11	1	11	97
Other income	495	1,232	1,353	2,050
Total non-interest income	14,819	13,824	27,284	26,842
Non-interest expense:
Compensation and employee benefits	26,910	25,741	53,758	51,771
Net occupancy expense	6,195	6,068	13,150	12,502
Data processing expense	3,531	3,272	6,988	6,517
FDIC insurance	999	1,293	2,098	2,615
Amortization of intangibles	695	856	1,447	1,861
Advertising and promotion expense	945	901	1,802	1,780
Other operating expenses	8,065	7,766	14,221	13,729
Total non-interest expense	47,340	45,897	93,464	90,775
Income before income tax expense	34,834	30,137	66,710	59,846
Income tax expense	10,451	8,781	18,819	17,517
Net income	$ 24,383	$ 21,356	$ 47,891	$ 42,329
Basic earnings per share (usd per share)	$ 0.38	$ 0.34	$ 0.75	$ 0.67
Weighted average basic shares outstanding (in shares)	64,357,684	63,553,694	64,263,065	63,452,393
Diluted earnings per share (usd per share)	$ 0.38	$ 0.34	$ 0.74	$ 0.67
Weighted average diluted shares outstanding (in shares)	64,541,071	63,726,513	64,455,873	63,623,134

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - 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	$ 24,383	$ 21,356	$ 47,891	$ 42,329
Unrealized gains and losses on securities available for sale:
Net unrealized gains arising during the period	1,228	2,979	1,999	10,073
Reclassification adjustment for gains included in net income	0	0	0	(57)
Total	1,228	2,979	1,999	10,016
Unrealized (losses) gains on derivatives	(3)	(170)	52	(591)
Amortization related to post-retirement obligations	37	140	69	239
Total other comprehensive income	1,262	2,949	2,120	9,664
Total comprehensive income	$ 25,645	$ 24,305	$ 50,011	$ 51,993

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Unallocated ESOP Shares [Member]	Common Stock Acquired By Directors Deferred Fee Plan [Member]	Deferred Compensation DDFP [Member]
Beginning balance at Dec. 31, 2015	$ 1,196,065	$ 832	$ 1,000,810	$ 507,713	$ (2,546)	$ (269,014)	$ (41,730)	$ (6,517)	$ 6,517
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	42,329			42,329
Other comprehensive income, net of tax	9,664				9,664
Cash dividends declared	(23,222)			(23,222)
Distributions from DDFP	59		59					335	(335)
Purchases of treasury stock	(1,557)					(1,557)
Purchase of employee restricted shares to fund statutory tax withholding	(1,145)					(1,145)
Shares issued dividend reinvestment plan	751		95			656
Stock option exercises	2,630		37			2,593
Allocation of ESOP shares	1,530		186				1,344
Allocation of SAP shares	2,371		2,371
Allocation of stock options	88		88
Ending Balance at Jun. 30, 2016	1,229,563	832	1,003,646	526,820	7,118	(268,467)	(40,386)	(6,182)	6,182
Beginning balance at Mar. 31, 2016					4,169
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	21,356
Other comprehensive income, net of tax	2,949
Ending Balance at Jun. 30, 2016	1,229,563	832	1,003,646	526,820	7,118	(268,467)	(40,386)	(6,182)	6,182
Beginning balance at Dec. 31, 2016	1,251,781	832	1,005,777	550,768	(3,397)	(264,221)	(37,978)	(5,846)	5,846
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	47,891
Other comprehensive income, net of tax	2,120				2,120
Cash dividends declared	(25,309)			(25,309)
Distributions from DDFP	114		114					335	(335)
Purchases of treasury stock	(443)					(443)
Purchase of employee restricted shares to fund statutory tax withholding	(709)					(709)
Shares issued dividend reinvestment plan	910		284			626
Stock option exercises	2,515		(1,017)			3,532
Allocation of ESOP shares	2,120		710				1,410
Allocation of SAP shares	2,514		2,514
Allocation of stock options	97		97
Ending Balance at Jun. 30, 2017	1,283,601	832	1,008,479	573,350	(1,277)	(261,215)	(36,568)	(5,511)	5,511
Beginning balance at Mar. 31, 2017					(2,539)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	24,383
Other comprehensive income, net of tax	1,262
Ending Balance at Jun. 30, 2017	$ 1,283,601	$ 832	$ 1,008,479	$ 573,350	$ (1,277)	$ (261,215)	$ (36,568)	$ (5,511)	$ 5,511

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 47,891	$ 42,329
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of intangibles	5,971	6,585
Provision for loan losses	3,200	3,200
Deferred tax expense	840	112
Income on Bank-owned life insurance	(3,938)	(2,701)
Net amortization of premiums and discounts on securities	4,911	5,037
Accretion of net deferred loan fees	(2,422)	(1,627)
Amortization of premiums on purchased loans, net	516	514
Net increase in loans originated for sale	(13,752)	(7,750)
Proceeds from sales of loans originated for sale	0	8,457
Proceeds from sales of foreclosed assets	3,540	2,501
ESOP expense	2,120	1,530
Allocation of stock award shares	2,514	2,215
Allocation of stock options	97	88
Excess tax benefits related to stock-based compensation	1,199	0
Net gain on sale of loans	(348)	(707)
Net gain on securities transactions	(11)	(97)
Net gain on sale of premises and equipment	0	(4)
Net gain on sale of foreclosed assets	(501)	(235)
(Increase) decrease in accrued interest receivable	(8)	289
Increase in other assets	(3,723)	(15,876)
(Decrease) increase in other liabilities	(7,873)	13,162
Net cash provided by operating activities	40,223	57,022
Cash flows from investing activities:
Proceeds from maturities, calls and paydowns of investment securities held to maturity	25,638	17,336
Purchases of investment securities held to maturity	(31,572)	(23,930)
Proceeds from sales of securities	0	2,193
Proceeds from maturities, calls and paydowns of securities available for sale	100,502	92,819
Purchases of securities available for sale	(99,268)	(130,788)
Proceeds from redemption of Federal Home Loan Bank stock	57,658	30,758
Purchases of Federal Home Loan Bank stock	(60,881)	(28,887)
Purchases of loans	0	(28,590)
Net increase in loans	(13,922)	(216,119)
Proceeds from sales of premises and equipment	0	4
Purchases of premises and equipment	(1,108)	(2,411)
Net cash used in investing activities	(22,953)	(287,615)
Cash flows from financing activities:
Net (decrease) increase in deposits	(53,092)	305,899
Increase in mortgage escrow deposits	4,489	4,893
Cash dividends paid to stockholders	(25,309)	(23,222)
Shares issued through the dividend reinvestment plan	910	751
Purchases of treasury stock	(443)	(1,557)
Purchase of employee restricted shares to fund statutory tax withholding	(709)	(1,145)
Stock options exercised	2,515	2,630
Proceeds from long-term borrowings	171,980	251,652
Payments on long-term borrowings	(202,019)	(295,336)
Net increase in short-term borrowings	93,513	1,329
Net cash (used in) provided by financing activities	(8,165)	245,894
Net increase in cash and cash equivalents	9,105	15,301
Cash and cash equivalents at beginning of period	144,297	102,226
Cash and cash equivalents at end of period	153,402	117,527
Cash paid during the period for:
Interest on deposits and borrowings	22,422	21,821
Income taxes	15,491	15,676
Non-cash investing activities:
Transfer of loans receivable to foreclosed assets	$ 2,019	$ 2,529

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies A. Basis of Financial Statement Presentation The accompanying unaudited consolidated financial statements include the accounts of Provident Financial Services, Inc. and its wholly owned subsidiary, Provident Bank (the “Bank,” together with Provident Financial Services, Inc., the “Company”). In preparing the interim unaudited consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated statements of financial condition and the consolidated statements of income for the periods presented. Actual results could differ from these estimates. The allowance for loan losses, the valuation of securities available for sale and the valuation of deferred tax assets are material estimates that are particularly susceptible to near-term change. The interim unaudited consolidated financial statements reflect all normal and recurring adjustments, which are, in the opinion of management, considered necessary for a fair presentation of the financial condition and results of operations for the periods presented. The results of operations for the three and six months ended June 30, 2017 are not necessarily indicative of the results of operations that may be expected for all of 2017 . Certain information and note disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission. Certain reclassifications have been made in the consolidated financial statements to conform with current year classifications. These unaudited consolidated financial statements should be read in conjunction with the December 31, 2016 Annual Report to Stockholders on Form 10-K. B. Earnings Per Share The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share calculations for the three and six months ended June 30, 2017 and 2016 (dollars in thousands, except per share amounts): Three months ended June 30, 2017 2016 Net Income Weighted Average Common Shares Outstanding Per Share Amount Net Income Weighted Average Common Shares Outstanding Per Share Amount Net income $ 24,383 $ 21,356 Basic earnings per share: Income available to common stockholders $ 24,383 64,357,684 $ 0.38 $ 21,356 63,553,694 $ 0.34 Dilutive shares 183,387 172,819 Diluted earnings per share: Income available to common stockholders $ 24,383 64,541,071 $ 0.38 $ 21,356 63,726,513 $ 0.34 Six months ended June 30, 2017 2016 Net Income Weighted Average Common Shares Outstanding Per Share Amount Net Income Weighted Average Common Shares Outstanding Per Share Amount Net income $ 47,891 $ 42,329 Basic earnings per share: Income available to common stockholders $ 47,891 64,263,065 $ 0.75 $ 42,329 63,452,393 $ 0.67 Dilutive shares 192,808 170,741 Diluted earnings per share: Income available to common stockholders $ 47,891 64,455,873 $ 0.74 $ 42,329 63,623,134 $ 0.67 Anti-dilutive stock options and awards at June 30, 2017 and 2016 , totaling 437,904 shares and 580,314 shares, respectively, were excluded from the earnings per share calculations.

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities At June 30, 2017 , the Company had $ 1.04 billion and $492.7 million in available for sale and held to maturity investment securities, respectively. Many factors, including lack of liquidity in the secondary market for certain securities, variations in pricing information, regulatory actions, changes in the business environment or any changes in the competitive marketplace could have an adverse effect on the Company’s investment portfolio which could result in other-than-temporary impairment ("OTTI") on certain investment securities in future periods. The total number of held to maturity and available for sale securities in an unrealized loss position as of June 30, 2017 totaled 266 , compared with 419 at December 31, 2016 . All securities with unrealized losses at June 30, 2017 were analyzed for other-than-temporary impairment. Based upon this analysis, the Company believes that as of June 30, 2017 , such securities with unrealized losses do not represent impairments that are other-than-temporary. Securities Available for Sale The following tables present the amortized cost, gross unrealized gains, gross unrealized losses and the fair value for securities available for sale at June 30, 2017 and December 31, 2016 (in thousands): June 30, 2017 Amortized Gross Gross Fair US Treasury obligations $ 5,990 — (2 ) 5,988 Agency obligations 42,058 21 (30 ) 42,049 Mortgage-backed securities 963,291 7,187 (5,382 ) 965,096 State and municipal obligations 3,706 115 — 3,821 Corporate obligations 21,050 401 (13 ) 21,438 Equity securities 397 179 — 576 $ 1,036,492 7,903 (5,427 ) 1,038,968 December 31, 2016 Amortized Gross Gross Fair US Treasury obligations $ 7,995 13 — 8,008 Agency obligations 57,123 90 (25 ) 57,188 Mortgage-backed securities 952,992 7,249 (8,380 ) 951,861 State and municipal obligations 3,727 19 (3 ) 3,743 Corporate obligations 19,013 35 (11 ) 19,037 Equity securities 397 152 — 549 $ 1,041,247 7,558 (8,419 ) 1,040,386 The amortized cost and fair value of securities available for sale at June 30, 2017 , by contractual maturity, are shown below (in thousands). Expected maturities may differ from contractual maturities due to prepayment or early call privileges of the issuer. June 30, 2017 Amortized cost Fair value Due in one year or less $ 44,455 44,414 Due after one year through five years 7,444 7,511 Due after five years through ten years 20,905 21,371 Due after ten years — — $ 72,804 73,296 Mortgage-backed securities totaling $963.3 million at amortized cost and $965.1 million at fair value are excluded from the table above as their expected lives are likely to be shorter than the contractual maturity date due to principal prepayments. Also excluded from the table above are equity securities of $397,000 at amortized cost and $576,000 at fair value. For the three and six months ended June 30, 2017 , no securities were sold or called from the securities available for sale portfolio. For the three months ended June 30, 2016 , no securities were sold from the available for sale portfolio. Proceeds from the sale of securities available for sale, for the six months ended June 30, 2016 , totaled $2.2 million , resulting in gross gains of $95,000 and no gross losses. There were no calls of available for sale securities for the three and six months ended June 30, 2016 . The Company did not incur an OTTI charge on securities in the available for sale portfolio for the three and six months ended June 30, 2017 and 2016 . The following tables represent the Company’s disclosure regarding securities available for sale with temporary impairment at June 30, 2017 and December 31, 2016 (in thousands): June 30, 2017 Unrealized Losses Less than 12 months 12 months or longer Total Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses US Treasury obligations $ 5,988 (2 ) — — 5,988 (2 ) Agency obligations 31,017 (30 ) — — 31,017 (30 ) Mortgage-backed securities 480,698 (5,380 ) 47 (2 ) 480,745 (5,382 ) Corporate obligations — — 988 (13 ) 988 (13 ) $ 517,703 (5,412 ) 1,035 (15 ) 518,738 (5,427 ) December 31, 2016 Unrealized Losses Less than 12 months 12 months or longer Total Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Agency obligations $ 14,000 (25 ) — — 14,000 (25 ) Mortgage-backed securities 553,629 (8,377 ) 65 (3 ) 553,694 (8,380 ) State and municipal obligations 661 (3 ) — — 661 (3 ) Corporate obligations — — 990 (11 ) 990 (11 ) $ 568,290 (8,405 ) 1,055 (14 ) 569,345 (8,419 ) The temporary loss position associated with certain securities available for sale was the result of changes in market interest rates relative to the coupon of the individual security and changes in credit spreads. The Company does not have the intent to sell securities in a temporary loss position at June 30, 2017 , nor is it more likely than not that the Company will be required to sell the securities before their prices recover. The number of available for sale securities in an unrealized loss position at June 30, 2017 totaled 83 , compared with 87 at December 31, 2016 . At June 30, 2017 , there were two private label mortgage-backed securities in an unrealized loss position, with an amortized cost of $53,000 and an unrealized loss of $2,000 . None of these private label mortgage-backed securities were below investment grade at June 30, 2017 . The Company estimates the loss projections for each security by stressing the individual loans collateralizing the security and applying a range of expected default rates, loss severities, and prepayment speeds in conjunction with the underlying credit enhancement for each security. Based on specific assumptions about collateral and vintage, a range of possible cash flows was identified to determine whether OTTI existed during the six months ended June 30, 2017 . The Company believes that no OTTI of the securities available for sale portfolio existed for the three and six months ended June 30, 2017 . Investment Securities Held to Maturity The following tables present the amortized cost, gross unrealized gains, gross unrealized losses and the estimated fair value for investment securities held to maturity at June 30, 2017 and December 31, 2016 (in thousands): June 30, 2017 Amortized cost Gross unrealized gains Gross unrealized losses Fair value Agency obligations $ 4,306 — (56 ) 4,250 Mortgage-backed securities 579 20 — 599 State and municipal obligations 478,564 10,746 (2,082 ) 487,228 Corporate obligations 9,288 7 (34 ) 9,261 $ 492,737 10,773 (2,172 ) 501,338 December 31, 2016 Amortized cost Gross unrealized gains Gross unrealized losses Fair value Agency obligations $ 4,306 2 (83 ) 4,225 Mortgage-backed securities 893 31 — 924 State and municipal obligations 473,653 6,635 (5,436 ) 474,852 Corporate obligations 9,331 7 (52 ) 9,286 $ 488,183 6,675 (5,571 ) 489,287 The Company generally purchases securities for long-term investment purposes, and differences between amortized cost and fair values may fluctuate during the investment period. There were no sales of securities from the held to maturity portfolio for the three and six months ended June 30, 2017 and 2016 . For the three and six months ended June 30, 2017 , proceeds from calls on certain securities in the held to maturity portfolio totaled $7.9 million and $20.7 million , respectively, with gross gains of $11,000 and no gross losses recognized in both the three and six month periods. For the three and six months ended June 30, 2016 , proceeds from calls of certain securities in the held to maturity portfolio totaled $4.3 million and $14.9 million , respectively, with gross gains totaling $1,000 and $2,000 , respectively and no gross losses recognized in either period. The amortized cost and fair value of investment securities in the held to maturity portfolio at June 30, 2017 by contractual maturity are shown below (in thousands). Expected maturities may differ from contractual maturities due to prepayment or early call privileges of the issuer. June 30, 2017 Amortized cost Fair value Due in one year or less $ 22,961 23,006 Due after one year through five years 56,527 57,412 Due after five years through ten years 252,672 258,915 Due after ten years 159,998 161,406 $ 492,158 500,739 Mortgage-backed securities totaling $579,000 at amortized cost and $599,000 at fair value are excluded from the table above as their expected lives are likely to be shorter than the contractual maturity date due to principal prepayments. The following tables represent the Company’s disclosure on investment securities held to maturity with temporary impairment at June 30, 2017 and December 31, 2016 (in thousands): June 30, 2017 Unrealized Losses Less than 12 months 12 months or longer Total Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Agency obligations $ 3,851 (56 ) — — 3,851 (56 ) State and municipal obligations 78,613 (1,814 ) 9,198 (268 ) 87,811 (2,082 ) Corporate obligations 6,836 (34 ) — — 6,836 (34 ) $ 89,300 (1,904 ) 9,198 (268 ) 98,498 (2,172 ) December 31, 2016 Unrealized Losses Less than 12 months 12 months or longer Total Fair Gross Fair Gross Fair Gross Agency obligations $ 3,525 (83 ) — — 3,525 (83 ) State and municipal obligations 172,152 (5,132 ) 6,617 (304 ) 178,769 (5,436 ) Corporate obligations 4,697 (52 ) — — 4,697 (52 ) $ 180,374 (5,267 ) 6,617 (304 ) 186,991 (5,571 ) Based upon the review of the held to maturity securities portfolio, the Company believes that as of June 30, 2017 , securities with unrealized loss positions shown above do not represent impairments that are other-than-temporary. The review of the portfolio for OTTI considers the percentage and length of time the fair value of an investment is below book value, as well as general market conditions, changes in interest rates, credit risks, whether the Company has the intent to sell the securities and whether it is more likely than not that the Company would be required to sell the securities before their prices recover. The number of held to maturity securities in an unrealized loss position at June 30, 2017 totaled 183 , compared with 332 at December 31, 2016 . The decrease in the number of securities in an unrealized loss position at June 30, 2017 , was due to a slight decrease in market interest rates from December 31, 2016 and a tightening of spreads in the municipal bond sector. All temporarily impaired investment securities were investment grade at June 30, 2017 .

Loans Receivable and Allowance

Loans Receivable and Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Loans Receivable and Allowance for Loan Losses	Loans Receivable and Allowance for Loan Losses Loans receivable at June 30, 2017 and December 31, 2016 are summarized as follows (in thousands): June 30, 2017 December 31, 2016 Mortgage loans: Residential $ 1,168,557 1,211,672 Commercial 1,992,449 1,978,569 Multi-family 1,384,590 1,402,054 Construction 305,860 264,814 Total mortgage loans 4,851,456 4,857,109 Commercial loans 1,687,944 1,630,444 Consumer loans 492,838 516,755 Total gross loans 7,032,238 7,004,308 Purchased credit-impaired ("PCI") loans 1,266 1,272 Premiums on purchased loans 4,492 4,968 Unearned discounts (37 ) (39 ) Net deferred fees (6,911 ) (7,023 ) Total loans $ 7,031,048 7,003,486 The following tables summarize the aging of loans receivable by portfolio segment and class of loans, excluding PCI loans (in thousands): June 30, 2017 30-59 Days 60-89 Days Non-accrual Recorded Total Past Due Current Total Loans Receivable Mortgage loans: Residential $ 4,861 3,521 9,126 — 17,508 1,151,049 1,168,557 Commercial 522 1,010 8,727 — 10,259 1,982,190 1,992,449 Multi-family — — — — — 1,384,590 1,384,590 Construction — — 2,517 — 2,517 303,343 305,860 Total mortgage loans 5,383 4,531 20,370 — 30,284 4,821,172 4,851,456 Commercial loans 557 25 16,089 — 16,671 1,671,273 1,687,944 Consumer loans 1,735 1,516 2,448 — 5,699 487,139 492,838 Total gross loans $ 7,675 6,072 38,907 — 52,654 6,979,584 7,032,238 December 31, 2016 30-59 Days 60-89 Days Non-accrual Recorded Total Past Current Total Loans Receivable Mortgage loans: Residential $ 5,891 6,563 12,021 — 24,475 1,187,197 1,211,672 Commercial — 80 7,493 — 7,573 1,970,996 1,978,569 Multi-family — — 553 — 553 1,401,501 1,402,054 Construction — — 2,517 — 2,517 262,297 264,814 Total mortgage loans 5,891 6,643 22,584 — 35,118 4,821,991 4,857,109 Commercial loans 1,656 357 16,787 — 18,800 1,611,644 1,630,444 Consumer loans 2,561 1,199 3,030 — 6,790 509,965 516,755 Total gross loans $ 10,108 8,199 42,401 — 60,708 6,943,600 7,004,308 Included in loans receivable are loans for which the accrual of interest income has been discontinued due to deterioration in the financial condition of the borrowers. The principal amounts of these non-accrual loans were $38.9 million and $42.4 million at June 30, 2017 and December 31, 2016 , respectively. Included in non-accrual loans were $724,000 and $7.3 million of loans which were less than 90 days past due at June 30, 2017 and December 31, 2016 , respectively. There were no loans 90 days or greater past due and still accruing interest at June 30, 2017 or December 31, 2016 . The Company defines an impaired loan as a non-homogeneous loan greater than $1.0 million for which it is probable, based on current information, all amounts due under the contractual terms of the loan agreement will not be collected. Impaired loans also include all loans modified as troubled debt restructurings (“TDRs”). A loan is deemed to be a TDR when a loan modification resulting in a concession is made in an effort to mitigate potential loss arising from a borrower’s financial difficulty. Smaller balance homogeneous loans, including residential mortgages and other consumer loans, are evaluated collectively for impairment and are excluded from the definition of impaired loans, unless modified as TDRs. The Company separately calculates the reserve for loan losses on impaired loans. The Company may recognize impairment of a loan based upon: (1) the present value of expected cash flows discounted at the effective interest rate; (2) if a loan is collateral dependent, the fair value of collateral; or (3) the fair value of the loan. Additionally, if impaired loans have risk characteristics in common, those loans may be aggregated and historical statistics may be used as a means of measuring those impaired loans. The Company uses third-party appraisals to determine the fair value of the underlying collateral in its analysis of collateral dependent impaired loans. A third-party appraisal is generally ordered as soon as a loan is designated as a collateral dependent impaired loan and is updated annually or more frequently, if required. A specific allocation of the allowance for loan losses is established for each collateral dependent impaired loan with a carrying balance greater than the collateral’s fair value, less estimated costs to sell. Charge-offs are generally taken for the amount of the specific allocation when operations associated with the respective property cease and it is determined that collection of amounts due will be derived primarily from the disposition of the collateral. At each quarter end, if a loan is designated as a collateral dependent impaired loan and the third-party appraisal has not yet been received, an evaluation of all available collateral is made using the best information available at the time, including rent rolls, borrower financial statements and tax returns, prior appraisals, management’s knowledge of the market and collateral, and internally prepared collateral valuations based upon market assumptions regarding vacancy and capitalization rates, each as and where applicable. Once the appraisal is received and reviewed, the specific reserves are adjusted to reflect the appraised value. The Company believes there have been no significant time lapses in the recognition of changes in collateral values as a result of this process. At June 30, 2017 , there were 150 impaired loans totaling $52.7 million . Included in this total were 121 TDRs related to 117 borrowers totaling $31.3 million that were performing in accordance with their restructured terms and which continued to accrue interest at June 30, 2017 . At December 31, 2016 , there were 141 impaired loans totaling $52.0 million . Included in this total were 114 TDRs to 110 borrowers totaling $29.9 million that were performing in accordance with their restructured terms and which continued to accrue interest at December 31, 2016 . The following table summarizes loans receivable by portfolio segment and impairment method, excluding PCI loans (in thousands): June 30, 2017 Mortgage loans Commercial loans Consumer loans Total Portfolio Segments Individually evaluated for impairment $ 30,779 19,557 2,334 52,670 Collectively evaluated for impairment 4,820,677 1,668,387 490,504 6,979,568 Total gross loans $ 4,851,456 1,687,944 492,838 7,032,238 December 31, 2016 Mortgage loans Commercial loans Consumer loans Total Portfolio Segments Individually evaluated for impairment $ 29,551 20,255 2,213 52,019 Collectively evaluated for impairment 4,827,558 1,610,189 514,542 6,952,289 Total gross loans $ 4,857,109 1,630,444 516,755 7,004,308 The allowance for loan losses is summarized by portfolio segment and impairment classification as follows (in thousands): June 30, 2017 Mortgage loans Commercial loans Consumer loans Total Individually evaluated for impairment $ 1,782 2,230 92 4,104 Collectively evaluated for impairment 27,044 28,855 2,859 58,758 Total gross loans $ 28,826 31,085 2,951 62,862 December 31, 2016 Mortgage loans Commercial loans Consumer loans Total Individually evaluated for impairment $ 1,986 268 80 2,334 Collectively evaluated for impairment 27,640 28,875 3,034 59,549 Total gross loans $ 29,626 29,143 3,114 61,883 Loan modifications to borrowers experiencing financial difficulties that are considered TDRs primarily involve lowering the monthly payments on such loans through either a reduction in interest rate below a market rate, an extension of the term of the loan without a corresponding adjustment to the risk premium reflected in the interest rate, or a combination of these two methods. These modifications generally do not result in the forgiveness of principal or accrued interest. In addition, the Company attempts to obtain additional collateral or guarantor support when modifying such loans. If the borrower has demonstrated performance under the previous terms and our underwriting process shows the borrower has the capacity to continue to perform under the restructured terms, the loan will continue to accrue interest. Non-accruing restructured loans may be returned to accrual status when there has been a sustained period of repayment performance (generally six consecutive months of payments) and both principal and interest are deemed collectible. The following tables present the number of loans modified as TDRs during the three and six months ended June 30, 2017 and 2016 , along with their balances immediately prior to the modification date and post-modification as of June 30, 2017 and 2016 . There were no loans modified as TDRs during the three and six months ended June 30, 2016. For the three months ended June 30, 2017 June 30, 2016 Troubled Debt Restructurings Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment ($ in thousands) Mortgage loans: Residential 3 $ 1,836 $ 1,796 — $ — $ — Total mortgage loans 3 1,836 1,796 — — — Total restructured loans 3 $ 1,836 $ 1,796 — $ — $ — For the six months ended June 30, 2017 June 30, 2016 Troubled Debt Restructurings Number of Pre-Modification Post-Modification Number of Pre-Modification Post-Modification ($ in thousands) Mortgage loans: Residential 6 $ 2,838 $ 2,774 — $ — $ — Total mortgage loans 6 2,838 2,774 — — — Commercial loans 1 1,300 1,240 — — — Consumer loans 2 240 232 — — — Total restructured loans 9 $ 4,378 $ 4,246 — $ — $ — All TDRs are impaired loans, which are individually evaluated for impairment, as previously discussed. Estimated collateral values of collateral dependent impaired loans modified during the three and six months ended June 30, 2016 exceeded the carrying amounts of such loans. There were no charge-offs recorded on collateral dependent impaired loans modified during the three months ended June 30, 2017 . For the six months ended June 30, 2017 , $1.2 million of charge-offs were recorded on collateral dependent impaired loans, and are included in the preceding table. There were no charge-offs recorded on collateral dependent impaired loans for the same periods last year. For the three and six months ended June 30, 2017 , the allowance for loan losses associated with the TDRs presented in the preceding tables totaled $0 and $216,000 , respectively, and were included in the allowance for loan losses for loans individually evaluated for impairment. For the three and six months ended June 30, 2017 , the TDRs presented in the preceding tables had a weighted average modified interest rate of approximately 3.74% and 4.01% , respectively, compared to a weighted average rate of 3.87% and 3.90% prior to modification, respectively. The following table presents loans modified as TDRs within the 12 month periods ending June 30, 2017 and 2016 , and for which there was a payment default (90 days or more past due) within the respective one year period: June 30, 2017 June 30, 2016 Troubled Debt Restructurings Subsequently Defaulted Number of Loans Outstanding Recorded Investment Number of Loans Outstanding Recorded Investment ($ in thousands) Mortgage loans: Residential — $ — 1 $ 252 Total mortgage loans — — 1 252 Commercial loans — — — $ — Consumer loans — — — — Total restructured loans — $ — 1 $ 252 There were no payment defaults (90 days or more past due) for loans modified as TDRs within the 12 month periods ending June 30, 2017 . TDRs that subsequently default are considered collateral dependent impaired loans and are evaluated for impairment based on the estimated fair value of the underlying collateral less expected selling costs. PCI loans are loans acquired at a discount primarily due to deteriorated credit quality. As part of the May 30, 2014 acquisition of Team Capital, $5.2 million of the loans acquired were determined to be PCI loans. At the date of acquisition, PCI loans were accounted for at fair value, based upon the then present value of expected future cash flows, with no related allowance for loan losses. PCI loans totaled $1.3 million at June 30, 2017 and December 31, 2016 . The following table summarizes the changes in the accretable yield for PCI loans during the three and six months ended June 30, 2017 and 2016 (in thousands): Three months ended June 30, Six months ended June 30, 2017 2016 2017 2016 Beginning balance $ 172 503 200 676 Accretion (96 ) (419 ) (145 ) (840 ) Reclassification from non-accretable discount 82 244 103 492 Ending balance $ 158 328 158 328 The activity in the allowance for loan losses by portfolio segment for the three and six months ended June 30, 2017 and 2016 was as follows (in thousands): Three months ended June 30, Mortgage loans Commercial loans Consumer loans Total Portfolio Segments Unallocated Total 2017 Balance at beginning of period $ 29,318 29,786 3,051 62,155 — 62,155 Provision charged (credited) to operations (292 ) 1,777 215 1,700 — 1,700 Recoveries of loans previously charged-off 7 73 225 305 — 305 Loans charged-off (207 ) (551 ) (540 ) (1,298 ) — (1,298 ) Balance at end of period $ 28,826 31,085 2,951 62,862 — 62,862 2016 Balance at beginning of period $ 30,849 28,255 3,087 62,191 — 62,191 Provision charged (credited) to operations 497 1,311 (108 ) 1,700 — 1,700 Recoveries of loans previously charged-off 401 192 220 813 — 813 Loans charged-off (113 ) (3,459 ) (199 ) (3,771 ) — (3,771 ) Balance at end of period $ 31,634 26,299 3,000 60,933 — 60,933 Six months ended June 30, Mortgage Commercial Consumer Total Portfolio Unallocated Total 2017 Balance at beginning of period $ 29,626 29,143 3,114 61,883 — 61,883 Provision charged (credited) to operations (423 ) 3,394 229 3,200 — 3,200 Recoveries of loans previously charged-off 61 531 401 993 — 993 Loans charged-off (438 ) (1,983 ) (793 ) (3,214 ) — (3,214 ) Balance at end of period $ 28,826 31,085 2,951 62,862 — 62,862 2016 Balance at beginning of period $ 32,094 25,829 3,501 61,424 — 61,424 Provision charged (credited) to operations (695 ) 4,269 (374 ) 3,200 — 3,200 Recoveries of loans previously charged-off 573 283 537 1,393 — 1,393 Loans charged-off (338 ) (4,082 ) (664 ) (5,084 ) — (5,084 ) Balance at end of period $ 31,634 26,299 3,000 60,933 — 60,933 The following table presents loans individually evaluated for impairment by class and loan category, excluding PCI loans (in thousands): June 30, 2017 December 31, 2016 Unpaid Principal Balance Recorded Investment Related Allowance Average Recorded Investment Interest Income Recognized Unpaid Principal Balance Recorded Investment Related Allowance Average Recorded Investment Interest Income Recognized Loans with no related allowance Mortgage loans: Residential $ 12,453 9,858 — 9,963 239 10,691 7,881 — 8,027 484 Commercial 4,600 4,472 — 4,472 — 1,556 1,556 — 1,586 40 Construction 2,553 2,517 — 2,545 — 2,553 2,517 — 2,514 — Total 19,606 16,847 — 16,980 239 14,800 11,954 — 12,127 524 Commercial loans 19,420 15,912 — 16,740 152 21,830 18,874 — 13,818 259 Consumer loans 1,445 911 — 960 27 1,493 981 — 1,026 59 Total impaired loans $ 40,471 33,670 — 34,680 418 38,123 31,809 — 26,971 842 Loans with an allowance recorded Mortgage loans: Residential $ 13,890 12,856 1,636 12,930 249 14,169 13,520 1,716 13,705 519 Commercial 1,076 1,076 146 1,094 27 4,138 4,077 270 4,111 55 Construction — — — — — — — — — — Total 14,966 13,932 1,782 14,024 276 18,307 17,597 1,986 17,816 574 Commercial loans 3,708 3,645 2,230 3,688 35 1,381 1,381 268 5,956 4 Consumer loans 1,434 1,423 92 1,462 38 1,242 1,232 80 1,259 66 Total impaired loans $ 20,108 19,000 4,104 19,174 349 20,930 20,210 2,334 25,031 644 Total impaired loans Mortgage loans: Residential $ 26,343 22,714 1,636 22,893 488 24,860 21,401 1,716 21,732 1,003 Commercial 5,676 5,548 146 5,566 27 5,694 5,633 270 5,697 95 Construction 2,553 2,517 — 2,545 — 2,553 2,517 — 2,514 — Total 34,572 30,779 1,782 31,004 515 33,107 29,551 1,986 29,943 1,098 Commercial loans 23,128 19,557 2,230 20,428 187 23,211 20,255 268 19,774 263 Consumer loans 2,879 2,334 92 2,422 65 2,735 2,213 80 2,285 125 Total impaired loans $ 60,579 52,670 4,104 53,854 767 59,053 52,019 2,334 52,002 1,486 Specific allocations of the allowance for loan losses attributable to impaired loans totaled $4.1 million at June 30, 2017 and $2.3 million at December 31, 2016 . At June 30, 2017 and December 31, 2016 , impaired loans for which there was no related allowance for loan losses totaled $33.7 million and $31.8 million , respectively. The average balance of impaired loans for the six months ended June 30, 2017 was $53.9 million . The Company utilizes an internal nine-point risk rating system to summarize its loan portfolio into categories with similar risk characteristics. Loans deemed to be “acceptable quality” are rated 1 through 4, with a rating of 1 established for loans with minimal risk. Loans that are deemed to be of “questionable quality” are rated 5 (watch) or 6 (special mention). Loans with adverse classifications (substandard, doubtful or loss) are rated 7, 8 or 9, respectively. Commercial mortgage, commercial, multi-family and construction loans are rated individually, and each lending officer is responsible for risk rating loans in their portfolio. These risk ratings are then reviewed by the department manager and/or the Chief Lending Officer and by the Credit Department. The risk ratings are also confirmed through periodic loan review examinations, which are currently performed by an independent third-party. Reports by the independent third-party are presented directly to the Audit Committee of the Board of Directors. Loans receivable by credit quality risk rating indicator, excluding PCI loans, are as follows (in thousands): At June 30, 2017 Residential Commercial mortgage Multi- family Construction Total mortgages Commercial Consumer Total loans Special mention $ 3,521 25,567 552 — 29,640 19,606 1,516 50,762 Substandard 9,125 25,588 520 2,517 37,750 38,015 2,448 78,213 Doubtful — — — — — — — — Loss — — — — — — — — Total classified and criticized 12,646 51,155 1,072 2,517 67,390 57,621 3,964 128,975 Pass/Watch 1,155,911 1,941,294 1,383,518 303,343 4,784,066 1,630,323 488,874 6,903,263 Total $ 1,168,557 1,992,449 1,384,590 305,860 4,851,456 1,687,944 492,838 7,032,238 At December 31, 2016 Residential Commercial mortgage Multi- family Construction Total mortgages Commercial Consumer Total loans Special mention $ 6,563 25,329 563 — 32,455 14,840 1,242 48,537 Substandard 12,021 23,011 553 2,517 38,102 47,255 2,940 88,297 Doubtful — — — — — — — — Loss — — — — — — — — Total classified and criticized 18,584 48,340 1,116 2,517 70,557 62,095 4,182 136,834 Pass/Watch 1,193,088 1,930,229 1,400,938 262,297 4,786,552 1,568,349 512,573 6,867,474 Total $ 1,211,672 1,978,569 1,402,054 264,814 4,857,109 1,630,444 516,755 7,004,308

Deposits

Deposits	6 Months Ended
	Jun. 30, 2017
Banking and Thrift [Abstract]
Deposits	Deposits Deposits at June 30, 2017 and December 31, 2016 are summarized as follows (in thousands): June 30, 2017 December 31, 2016 Savings $ 1,107,051 1,099,020 Money market 1,535,995 1,582,750 NOW 1,853,736 1,871,298 Non-interest bearing 1,353,757 1,349,378 Certificates of deposit 649,998 651,183 Total deposits $ 6,500,537 6,553,629

Components of Net Periodic Bene

Components of Net Periodic Benefit Cost	6 Months Ended
	Jun. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Components of Net Periodic Benefit Cost	Components of Net Periodic Benefit Cost The Bank has a noncontributory defined benefit pension plan covering its full-time employees who had attained age 21 with at least one year of service as of April 1, 2003. The pension plan was frozen on April 1, 2003. All participants in the Plan are 100% vested. The pension plan’s assets are invested in investment funds and group annuity contracts currently managed by the Principal Financial Group and Allmerica Financial. In addition to pension benefits, certain health care and life insurance benefits are currently made available to certain of the Bank’s retired employees. The costs of such benefits are accrued based on actuarial assumptions from the date of hire to the date the employee is fully eligible to receive the benefits. Effective January 1, 2003, eligibility for retiree health care benefits was frozen as to new entrants and benefits were eliminated for employees with less than ten years of service as of December 31, 2002. Effective January 1, 2007, eligibility for retiree life insurance benefits was frozen as to new entrants and retiree life insurance benefits were eliminated for employees with less than ten years of service as of December 31, 2006. Net periodic (increase) benefit cost for pension benefits and other post-retirement benefits for the three and six months ended June 30, 2017 and 2016 includes the following components (in thousands): Three months ended June 30, Six months ended June 30, Pension benefits Other post- retirement benefits Pension benefits Other post- retirement benefits 2017 2016 2017 2016 2017 2016 2017 2016 Service cost $ — — 26 37 $ — — 52 75 Interest cost 307 312 218 285 614 624 436 569 Expected return on plan assets (638 ) (612 ) — — (1,276 ) (1,224 ) — — Amortization of prior service cost — — — — — — — — Amortization of the net loss 230 236 (169 ) — 460 472 (338 ) — Net periodic (increase) benefit cost $ (101 ) (64 ) 75 322 $ (202 ) (128 ) 150 644 In its consolidated financial statements for the year ended December 31, 2016 , the Company previously disclosed that it does not expect to contribute to the pension plan in 2017 . As of June 30, 2017 , no contributions have been made to the pension plan. The net periodic (increase) benefit cost for pension benefits and other post-retirement benefits for the three and six months ended June 30, 2017 were calculated using the actual January 1, 2017 pension and other post-retirement benefits valuations.

Impact of Recent Accounting Pro

Impact of Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2017
Accounting Changes and Error Corrections [Abstract]
Impact of Recent Accounting Pronouncements	Impact of Recent Accounting Pronouncements In May 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-09, “Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting”. This update provides guidance about changes to terms or conditions of a share-based payment award which would require modification accounting. In particular, an entity is required to account for the effects of a modification if the fair value, vesting condition or the equity/liability classification of the modified award is not the same immediately before and after a change to the terms and conditions of the award. ASU 2017-09 is effective on a prospective basis for fiscal years beginning after December 15, 2017, with early adoption permitted. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. In March 2017, the FASB issued ASU 2017-08, “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities.” This ASU shortens the amortization period for premiums on callable debt securities by requiring that premiums be amortized to the first (or earliest) call date instead of as an adjustment to the yield over the contractual life. This change more closely aligns the accounting with the economics of a callable debt security and the amortization period with expectations that already are included in market pricing on callable debt securities. This ASU does not change the accounting for discounts on callable debt securities, which will continue to be amortized to the maturity date. This guidance includes only instruments that are held at a premium and have explicit call features. It does not include instruments that contain prepayment features, such as mortgage backed securities; nor does it include call options that are contingent upon future events or in which the timing or amount to be paid is not fixed. The effective date for this ASU is fiscal years beginning after December 15, 2018, including interim periods within the reporting period, with early adoption permitted. Transition is on a modified retrospective basis with an adjustment to retained earnings as of the beginning of the period of adoption. If early adopted in an interim period, adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-retirement Benefit Cost", which requires that companies disaggregate the service cost component from other components of net benefit cost. This update calls for companies that offer post-retirement benefits to present the service cost, which is the amount an employer has to set aside each quarter or fiscal year to cover the benefits, in the same line item with other current employee compensation costs. Other components of net benefit cost will be presented in the income statement separately from the service cost component and outside the subtotal of income from operations, if one is presented. ASU 2017-07 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, “Simplifying the Test for Goodwill Impairment.” The main objective of this ASU is to simplify the accounting for goodwill impairment by requiring that impairment charges be based upon the first step in the current two-step impairment test under Accounting Standards Codification (ASC) 350. Currently, if the fair value of a reporting unit is lower than its carrying amount (Step 1), an entity calculates any impairment charge by comparing the implied fair value of goodwill with its carrying amount (Step 2). The implied fair value of goodwill is calculated by deducting the fair value of all assets and liabilities of the reporting unit from the reporting unit’s fair value as determined in Step 1. To determine the implied fair value of goodwill, entities estimate the fair value of any unrecognized intangible assets and any corporate-level assets or liabilities that were included in the determination of the carrying amount and fair value of the reporting unit in Step 1. Under ASU 2017-04, if a reporting unit’s carrying amount exceeds its fair value, an entity will record an impairment charge based on that difference. The impairment charge will be limited to the amount of goodwill allocated to that reporting unit. This standard eliminates the requirement to calculate a goodwill impairment charge using Step 2. ASU 2017-04 does not change the guidance on completing Step 1 of the goodwill impairment test. Under ASU 2017-04, an entity will still be able to perform the current optional qualitative goodwill impairment assessment before determining whether to proceed to Step 1. The standard will be applied prospectively and is effective for annual and interim impairment tests performed in periods beginning after December 15, 2019. Early adoption is permitted for annual and interim goodwill impairment testing dates after January 1, 2017. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments," a new standard which addresses diversity in practice related to eight specific cash flow issues: debt prepayment or extinguishment costs, settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims, proceeds from the settlement of corporate-owned life insurance policies (including bank-owned life insurance policies), distributions received from equity method investees, beneficial interests in securitization transactions and separately identifiable cash flows and application of the predominance principle. ASU 2016-15 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Entities will apply the standard’s provisions using a retrospective transition method to each period presented. If it is impracticable to apply the amendments retrospectively for some of the issues, the amendments for those issues would be applied prospectively as of the earliest date practicable. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, “Measurement of Credit Losses on Financial Instruments.” The main objective of this ASU is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments by a reporting entity at each reporting date. The amendments in this ASU require financial assets measured at amortized cost to be presented at the net amount expected to be collected. The allowance for credit losses would represent a valuation account that would be deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The income statement would reflect the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. The measurement of expected credit losses would be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity will be required to use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. The amendments in ASU 2016-13 are effective for fiscal years, including interim periods, beginning after December 15, 2019. Early adoption of this ASU is permitted for fiscal years beginning after December 15, 2018. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842).” This ASU requires all lessees to recognize a lease liability and a right-of-use asset, measured at the present value of the future minimum lease payments, at the lease commencement date. Lessor accounting remains largely unchanged under the new guidance. The guidance is effective for fiscal years beginning after December 15, 2018, including interim reporting periods within that reporting period, with early adoption permitted. A modified retrospective approach must be applied for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company is currently assessing the impact that the guidance will have on the Company's consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, "Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Liabilities." This ASU addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. This amendment supersedes the guidance to classify equity securities with readily determinable fair values into different categories, requires equity securities, except equity method investments, to be measured at fair value with changes in the fair value recognized through net income, and simplifies the impairment assessment of equity investments without readily determinable fair values. The amendment requires public business entities that are required to disclose the fair value of financial instruments measured at amortized cost on the balance sheet to measure that fair value using the exit price notion. The amendment 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. The amendment requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or in the accompanying notes to the financial statements. The amendment reduces diversity in current practice by clarifying that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the entity’s other deferred tax assets. This amendment is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Entities should apply the amendment by means of a cumulative-effect adjustment as of the beginning of the fiscal year of adoption, with the exception of the amendment related to equity securities without readily determinable fair values, which should be applied prospectively to equity investments that exist as of the date of adoption. The Company is currently evaluating the impact that the guidance will have on the Company's consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers ." The objective of this amendment is to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP and IFRS. This update affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are in the scope of other standards. The ASU is effective for public business entities for financial statements issued for fiscal years beginning after December 15, 2017, and early adoption is permitted. Subsequently, the FASB issued the following standards related to ASU 2014-09: ASU 2016-08, “Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations;” ASU 2016-10, “Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing;” ASU 2016-11, “Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 815): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting;” and ASU 2016-12, “Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients” . These amendments are intended to improve and clarify the implementation guidance of ASU 2014-09 and have the same effective date as the original standard. The Company's revenue is comprised of net interest income on interest earning assets and liabilities and non-interest income. The scope of guidance explicitly excludes net interest income as well as other revenues associated with financial assets and liabilities, including loans, leases, securities and derivatives. Accordingly, the majority of the Company's revenues will not be affected. The Company is currently evaluating the impact that the guidance will have on the Company's consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The determination of fair values of financial instruments often requires the use of estimates. Where quoted market values in an active market are not readily available, the Company utilizes various valuation techniques to estimate fair value. Fair value is an estimate of the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. However, in many instances fair value estimates may not be substantiated by comparison to independent markets and may not be realized in an immediate sale of the financial instrument. GAAP establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of fair value hierarchy are as follows: Level 1: Unadjusted quoted market prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; Level 2: Quoted prices in markets that are not active, or inputs that are observable either directly or indirectly, for substantially the full term of the asset or liability; and Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The valuation techniques are based upon the unpaid principal balance only, and exclude any accrued interest or dividends at the measurement date. Interest income and expense and dividend income are recorded within the consolidated statements of income depending on the nature of the instrument using the effective interest method based on acquired discount or premium. Assets and Liabilities Measured at Fair Value on a Recurring Basis The valuation techniques described below were used to measure fair value of financial instruments in the table below on a recurring basis as of June 30, 2017 and December 31, 2016 . Securities Available for Sale For securities available for sale, fair value was estimated using a market approach. The majority of the Company’s securities are fixed income instruments that are not quoted on an exchange, but are traded in active markets. Prices for these instruments are obtained through third party data service providers or dealer market participants with which the Company has historically transacted both purchases and sales of securities. Prices obtained from these sources include market quotations and matrix pricing. Matrix pricing, a Level 2 input, is a mathematical technique used principally to value certain securities to benchmark or to comparable securities. The Company evaluates the quality of Level 2 matrix pricing through comparison to similar assets with greater liquidity and evaluation of projected cash flows. As the Company is responsible for the determination of fair value, it performs quarterly analyses on the prices received from the pricing service to determine whether the prices are reasonable estimates of fair value. Specifically, the Company compares the prices received from the pricing service to a secondary pricing source. Additionally, the Company compares changes in the reported market values and returns to relevant market indices to test the reasonableness of the reported prices. The Company’s internal price verification procedures and review of fair value methodology documentation provided by independent pricing services has not historically resulted in an adjustment in the prices obtained from the pricing service. The Company also may hold equity securities and debt instruments issued by the U.S. government and U.S. government-sponsored agencies that are traded in active markets with readily accessible quoted market prices that are considered Level 1 inputs. Derivatives The Company records all derivatives on the statement of financial condition at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. The existing interest rate derivatives result from a service provided to certain qualifying borrowers in a loan related transaction and, therefore, are not used to manage interest rate risk in the Company’s assets or liabilities. As such, all changes in fair value of the Company’s derivatives are recognized directly in earnings. The Company also uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges, and which satisfy hedge accounting requirements, involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without the exchange of the underlying notional amount. These derivatives were used to hedge the variable cash outflows associated with FHLBNY borrowings. The effective portion of changes in the fair value of these derivatives are recorded in accumulated other comprehensive income, and are subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The ineffective portion of the change in fair value of these derivatives are recognized directly in earnings. The fair value of the Company's derivatives are determined using discounted cash flow analysis using observable market-based inputs, which are considered Level 2 inputs. Assets Measured at Fair Value on a Non-Recurring Basis The valuation techniques described below were used to estimate fair value of financial instruments measured on a non-recurring basis as of June 30, 2017 and December 31, 2016 . Collateral Dependent Impaired Loans For loans measured for impairment based on the fair value of the underlying collateral, fair value was estimated using a market approach. The Company measures the fair value of collateral underlying impaired loans primarily through obtaining independent appraisals that rely upon quoted market prices for similar assets in active markets. These appraisals include adjustments, on an individual case-by-case basis, to comparable assets based on the appraisers’ market knowledge and experience, as well as adjustments for estimated costs to sell between 5% and 10% . The Company classifies these loans as Level 3 within the fair value hierarchy. Foreclosed Assets Assets acquired through foreclosure or deed in lieu of foreclosure are carried at fair value, less estimated selling costs, which range between 5% and 10% . Fair value is generally based on independent appraisals that rely upon quoted market prices for similar assets in active markets. These appraisals include adjustments, on an individual case basis, to comparable assets based on the appraisers’ market knowledge and experience, and are classified as Level 3. When an asset is acquired, the excess of the loan balance over fair value less estimated selling costs is charged to the allowance for loan losses. A reserve for foreclosed assets may be established to provide for possible write-downs and selling costs that occur subsequent to foreclosure. Foreclosed assets are carried net of the related reserve. Operating results from real estate owned, including rental income, operating expenses, and gains and losses realized from the sales of real estate owned, are recorded as incurred. There were no changes to the valuation techniques for fair value measurements as of June 30, 2017 and December 31, 2016 . The following tables present the assets and liabilities reported on the consolidated statements of financial condition at their fair values as of June 30, 2017 and December 31, 2016 , by level within the fair value hierarchy: Fair Value Measurements at Reporting Date Using: (In thousands) June 30, 2017 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Measured on a recurring basis: Securities available for sale: U.S. Treasury obligations $ 5,988 5,988 — — Agency obligations 42,049 42,049 — — Mortgage-backed securities 965,096 — 965,096 — State and municipal obligations 3,821 — 3,821 — Corporate obligations 21,438 — 21,438 — Equity securities 576 576 — — Total securities available for sale 1,038,968 48,613 990,355 — Derivative assets 7,946 — 7,946 — $ 1,046,914 48,613 998,301 — Derivative liabilities $ 7,560 — 7,560 — Measured on a non-recurring basis: Loans measured for impairment based on the fair value of the underlying collateral $ 6,890 — — 6,890 Foreclosed assets 6,603 — — 6,603 $ 13,493 — — 13,493 Fair Value Measurements at Reporting Date Using: (In thousands) December 31, 2016 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Measured on a recurring basis: Securities available for sale: U.S. Treasury obligations $ 8,008 8,008 — — Agency obligations 57,188 57,188 — — Mortgage-backed securities 951,861 — 951,861 — State and municipal obligations 3,743 — 3,743 — Corporate obligations 19,037 — 19,037 — Equity securities 549 549 — — Total securities available for sale $ 1,040,386 65,745 974,641 — Derivative assets 7,441 — 7,441 — $ 1,047,827 65,745 982,082 — Derivative liabilities $ 6,750 — 6,750 — Measured on a non-recurring basis: Loans measured for impairment based on the fair value of the underlying collateral $ 11,001 — — 11,001 Foreclosed assets 7,991 — — 7,991 $ 18,992 — — 18,992 There were no transfers between Level 1, Level 2 and Level 3 during the three and six months ended June 30, 2017 . Other Fair Value Disclosures The Company is required to disclose estimated fair value of financial instruments, both assets and liabilities on and off the balance sheet, for which it is practicable to estimate fair value. The following is a description of valuation methodologies used for those assets and liabilities. Cash and Cash Equivalents For cash and due from banks, federal funds sold and short-term investments, the carrying amount approximates fair value. Investment Securities Held to Maturity For investment securities held to maturity, fair value was estimated using a market approach. The majority of the Company’s securities are fixed income instruments that are not quoted on an exchange, but are traded in active markets. Prices for these instruments are obtained through third party data service providers or dealer market participants with which the Company has historically transacted both purchases and sales of securities. Prices obtained from these sources include market quotations and matrix pricing. Matrix pricing, a Level 2 input, is a mathematical technique used principally to value certain securities to benchmark or comparable securities. The Company evaluates the quality of Level 2 matrix pricing through comparison to similar assets with greater liquidity and evaluation of projected cash flows. As the Company is responsible for the determination of fair value, it performs quarterly analyses on the prices received from the pricing service to determine whether the prices are reasonable estimates of fair value. Specifically, the Company compares the prices received from the pricing service to a secondary pricing source. Additionally, the Company compares changes in the reported market values and returns to relevant market indices to test the reasonableness of the reported prices. The Company’s internal price verification procedures and review of fair value methodology documentation provided by independent pricing services has not historically resulted in adjustment in the prices obtained from the pricing service. The Company also holds debt instruments issued by the U.S. government and U.S. government agencies that are traded in active markets with readily accessible quoted market prices that are considered Level 1 within the fair value hierarchy. Federal Home Loan Bank of New York ("FHLBNY") Stock The carrying value of FHLBNY stock was its cost. The fair value of FHLBNY stock is based on redemption at par value. The Company classifies the estimated fair value as Level 1 within the fair value hierarchy. Loans Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as commercial mortgage, residential mortgage, commercial, construction and consumer. Each loan category is further segmented into fixed and adjustable rate interest terms and into performing and non-performing categories. The fair value of performing loans was estimated using a combination of techniques, including a discounted cash flow model that utilizes a discount rate that reflects the Company’s current pricing for loans with similar characteristics and remaining maturity, adjusted by an amount for estimated credit losses inherent in the portfolio at the balance sheet date. The rates take into account the expected yield curve, as well as an adjustment for prepayment risk, when applicable. The Company classifies the estimated fair value of its loan portfolio as Level 3. The fair value for significant non-performing loans was based on recent external appraisals of collateral securing such loans, adjusted for the timing of anticipated cash flows. The Company classifies the estimated fair value of its non-performing loan portfolio as Level 3. Deposits The fair value of deposits with no stated maturity, such as non-interest bearing demand deposits and savings deposits, was equal to the amount payable on demand and classified as Level 1. The estimated fair value of certificates of deposit was based on the discounted value of contractual cash flows. The discount rate was estimated using the Company’s current rates offered for deposits with similar remaining maturities. The Company classifies the estimated fair value of its certificates of deposit portfolio as Level 2. Borrowed Funds The fair value of borrowed funds was estimated by discounting future cash flows using rates available for debt with similar terms and maturities and is classified by the Company as Level 2 within the fair value hierarchy. Commitments to Extend Credit and Letters of Credit The fair value of commitments to extend credit and letters of credit was estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties. For fixed rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair value estimates of commitments to extend credit and letters of credit are deemed immaterial. Limitations Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Because no market exists for a significant portion of the Company’s financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Fair value estimates are based on existing on- and off-balance sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Significant assets and liabilities that are not considered financial assets or liabilities include goodwill and other intangibles, deferred tax assets and premises and equipment. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in the estimates. The following tables present the Company’s financial instruments at their carrying and fair values as of June 30, 2017 and December 31, 2016 . Fair values are presented by level within the fair value hierarchy. Fair Value Measurements at June 30, 2017 Using: (Dollars in thousands) Carrying value Fair value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets: Cash and cash equivalents $ 153,402 153,402 153,402 — — Securities available for sale: U.S. Treasury obligations 5,988 5,988 5,988 — — Agency obligations 42,049 42,049 42,049 — — Mortgage-backed securities 965,096 965,096 — 965,096 — State and municipal obligations 3,821 3,821 — 3,821 — Corporate obligations 21,438 21,438 — 21,438 — Equity securities 576 576 576 — — Total securities available for sale $ 1,038,968 1,038,968 48,613 990,355 — Investment securities held to maturity: Agency obligations 4,306 4,250 4,250 — — Mortgage-backed securities 579 599 — 599 — State and municipal obligations 478,564 487,228 — 487,228 — Corporate obligations 9,288 9,261 — 9,261 — Total securities held to maturity $ 492,737 501,338 4,250 497,088 — FHLBNY stock 78,949 78,949 78,949 — — Loans, net of allowance for loan losses 6,968,186 6,961,290 — — 6,961,290 Derivative assets 7,946 7,946 — 7,946 — Financial liabilities: Deposits other than certificates of deposits $ 5,850,539 5,850,539 5,850,539 — — Certificates of deposit 649,998 650,663 — 650,663 — Total deposits $ 6,500,537 6,501,202 5,850,539 650,663 — Borrowings 1,676,219 1,677,676 — 1,677,676 — Derivative liabilities 7,560 7,560 — 7,560 — Fair Value Measurements at December 31, 2016 Using: (Dollars in thousands) Carrying value Fair value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets: Cash and cash equivalents $ 144,297 144,297 144,297 — — Securities available for sale: U.S. Treasury obligations 8,008 8,008 8,008 — — Agency obligations 57,188 57,188 57,188 — — Mortgage-backed securities 951,861 951,861 — 951,861 — State and municipal obligations 3,743 3,743 — 3,743 — Corporate obligations 19,037 19,037 — 19,037 — Equity securities 549 549 549 — — Total securities available for sale $ 1,040,386 1,040,386 65,745 974,641 — Investment securities held to maturity: Agency obligations $ 4,306 4,225 4,225 — — Mortgage-backed securities 893 924 — 924 — State and municipal obligations 473,653 474,852 — 474,852 — Corporate obligations 9,331 9,286 — 9,286 — Total securities held to maturity $ 488,183 489,287 4,225 485,062 — FHLBNY stock 75,726 75,726 75,726 — — Loans, net of allowance for loan losses 6,941,603 6,924,440 — — 6,924,440 Derivative assets 7,441 7,441 — 7,441 — Financial liabilities: Deposits other than certificates of deposits $ 5,902,446 5,902,446 5,902,446 — — Certificates of deposit 651,183 653,772 — 653,772 — Total deposits $ 6,553,629 6,556,218 5,902,446 653,772 — Borrowings 1,612,745 1,617,023 — 1,617,023 — Derivative liabilities 6,750 6,750 — 6,750 —

Other Comprehensive Income

Other Comprehensive Income	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Other Comprehensive Income	Other Comprehensive Income The following table presents the components of other comprehensive income, both gross and net of tax, for the three and six months ended June 30, 2017 and 2016 (in thousands): Three months ended June 30, 2017 2016 Before Tax Tax Effect After Tax Before Tax Tax Effect After Tax Components of Other Comprehensive Income: Unrealized gains and losses on securities available for sale: Net gains arising during the period $ 2,048 (820 ) 1,228 4,978 (1,999 ) 2,979 Reclassification adjustment for gains included in net income — — — — — — Total 2,048 (820 ) 1,228 4,978 (1,999 ) 2,979 Unrealized losses on derivatives (cash flow hedges) (5 ) 2 (3 ) (284 ) 114 (170 ) Amortization related to post-retirement obligations 61 (24 ) 37 234 (94 ) 140 Total other comprehensive income $ 2,104 (842 ) 1,262 4,928 (1,979 ) 2,949 Six months ended June 30, 2017 2016 Before Tax After Before Tax After Components of Other Comprehensive Income: Unrealized gains and losses on securities available for sale: Net gains arising during the period $ 3,336 (1,337 ) 1,999 16,833 (6,760 ) 10,073 Reclassification adjustment for gains included in net income — — — (95 ) 38 (57 ) Total 3,336 (1,337 ) 1,999 16,738 (6,722 ) 10,016 Unrealized gains (losses) on derivatives (cash flow hedges) 87 (35 ) 52 (988 ) 397 (591 ) Amortization related to post-retirement obligations 114 (45 ) 69 399 (160 ) 239 Total other comprehensive income $ 3,537 (1,417 ) 2,120 16,149 (6,485 ) 9,664 The following tables present the changes in the components of accumulated other comprehensive income (loss), net of tax, for the three and six months ended June 30, 2017 and 2016 (in thousands): Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax for the three months ended June 30, 2017 2016 Unrealized Sale Post- Retirement Unrealized gains on Derivatives (cash flow hedges) Accumulated Unrealized for Sale Post- Retirement Unrealized (losses) on Derivatives (cash flow hedges) Accumulated Balance at $ 261 (3,024 ) 224 (2,539 ) 10,988 (6,325 ) (494 ) 4,169 Current period other comprehensive income (loss) 1,228 37 (3 ) 1,262 2,979 140 (170 ) 2,949 Balance at June 30, $ 1,489 (2,987 ) 221 (1,277 ) 13,967 (6,185 ) (664 ) 7,118 Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax for the six months ended June 30, 2017 2016 Unrealized Sale Post- Retirement Unrealized gains on Derivatives (cash flow hedges) Accumulated Unrealized for Sale Post- Retirement Unrealized (losses) on Derivatives (cash flow hedges) Accumulated Balance at December 31, $ (510 ) (3,056 ) 169 (3,397 ) 3,951 (6,424 ) (73 ) (2,546 ) Current period other comprehensive income (loss) 1,999 69 52 2,120 10,016 239 (591 ) 9,664 Balance at June 30, $ 1,489 (2,987 ) 221 (1,277 ) 13,967 (6,185 ) (664 ) 7,118 The following tables summarize the reclassifications out of accumulated other comprehensive income to the consolidated statements of income for the three and six months ended June 30, 2017 and 2016 (in thousands): Reclassifications From Accumulated Other Comprehensive Amount reclassified from AOCI for the three months ended June 30, Affected line item in the Consolidated 2017 2016 Details of AOCI: Securities available for sale: Realized net gains on the sale of securities available for sale $ — — Net gain on securities transactions — — Income tax expense — — Net of tax Post-retirement obligations: Amortization of actuarial losses 61 236 Compensation and employee benefits (1) (24 ) (96 ) Income tax expense 37 140 Net of tax Total reclassifications $ 37 140 Net of tax Reclassifications From Accumulated Other Comprehensive Amount reclassified from AOCI for the six months ended June 30, Affected line item in the Consolidated 2017 2016 Details of AOCI: Securities available for sale: Realized net gains on the sale of securities available for sale $ — 95 Net gain on securities transactions — (38 ) Income tax expense — 57 Net of tax Post-retirement obligations: Amortization of actuarial losses 122 472 Compensation and employee benefits (1) (48 ) (190 ) Income tax expense 74 282 Net of tax Total reclassifications $ 74 339 Net of tax (1) This item is included in the computation of net periodic benefit cost. See Note 5. Components of Net Periodic Benefit Cost.

Derivatives and Hedging Activit

Derivatives and Hedging Activities	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative and Hedging Activities	Derivative and Hedging Activities The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities. Non-designated Hedges. Derivatives not designated in qualifying hedging relationships are not speculative and result from a service the Company provides to certain qualifying commercial borrowers in loan related transactions and, therefore, are not used to manage interest rate risk in the Company’s assets or liabilities. The Company executes interest rate swaps with qualified commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously hedged by offsetting interest rate swaps that the Company executes with a third party, such that the Company minimizes its net risk exposure resulting from such transactions. The interest rate swap agreement which the Company executes with the commercial borrower is collateralized by the borrower's property financed by the Company. As the interest rate swaps associated with this program do not meet the hedge accounting requirements, changes in the fair value of both the customer swaps and the offsetting swaps are recognized directly in earnings. At June 30, 2017 and December 31, 2016 , the Company had 42 interest rate swaps with an aggregate notional amount of $637.0 million and 36 interest rate swaps with an aggregate notional amount of $582.2 million , respectively, related to this program. The Company has credit derivatives resulting from participations in interest rate swaps provided to external lenders as part of loan participation arrangements; therefore, they are not used to manage interest rate risk in the Company's assets or liabilities. Cash Flow Hedges of Interest Rate Risk. The Company’s objective in using interest rate derivatives is to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges are recorded in accumulated other comprehensive income and are subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During the three and six months ended June 30, 2017 , such derivatives were used to hedge the variable cash outflows associated with Federal Home Loan Bank borrowings. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the three and six months ended June 30, 2017 and 2016 , the Company did not record any hedge ineffectiveness. Amounts reported in accumulated other comprehensive income (loss) related to derivatives will be reclassified to interest expense as interest payments are made on the Company’s debt. During the next twelve months, the Company estimates that $126,000 will be reclassified as an increase to interest expense. As of June 30, 2017 , the Company had two outstanding interest rate derivatives with a notional amount of $60.0 million that was designated as a cash flow hedge of interest rate risk. The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the Consolidated Statements of Financial Condition at June 30, 2017 and December 31, 2016 (in thousands): At June 30, 2017 Asset Derivatives Liability Derivatives Consolidated Statements of Financial Condition Fair Value Consolidated Statements of Financial Condition Fair Value Derivatives not designated as a hedging instrument: Interest rate products Other assets $ 7,575 Other liabilities $ 7,560 Credit contracts Other assets 2 Other liabilities — Total derivatives not designated as a hedging instrument $ 7,577 $ 7,560 Derivatives designated as a a hedging instrument: Interest rate products Other assets $ 369 Other liabilities $ — Total derivatives designated as a hedging instrument $ 369 $ — At December 31, 2016 Asset Derivatives Liability Derivatives Consolidated Statements of Financial Condition Fair Value Consolidated Statements of Financial Condition Fair Value Derivatives not designated as a hedging instrument: Interest rate products Other assets $ 7,156 Other liabilities $ 6,750 Credit contracts Other assets 3 Other liabilities — Total derivatives not designated as a hedging instrument $ 7,159 $ 6,750 Derivatives designated as a a hedging instrument: Interest rate products Other assets $ 282 Other liabilities $ — Total derivatives designated as a hedging instrument $ 282 $ — The tables below present the effect of the Company’s derivative financial instruments on the Consolidated Statements of Income during the three and six months ended June 30, 2017 and 2016 (in thousands). Gain (loss) recognized in Income on derivatives for the three months ended Consolidated Statements of Income June 30, 2017 June 30, 2016 Derivatives not designated as a hedging instrument: Interest rate products Other income (expense) $ (166 ) $ (425 ) Credit contracts Other income (expense) — (6 ) Total $ (166 ) $ (431 ) Derivatives designated as a hedging instrument: Interest rate products Other income (expense) $ (51 ) $ (92 ) Total $ (51 ) $ (92 ) Gain (loss) recognized in Income on derivatives for the six months ended Consolidated Statements of Income June 30, 2017 June 30, 2016 Derivatives not designated as a hedging instrument: Interest rate products Other income (expense) $ (392 ) $ (965 ) Credit contracts Other income (expense) 1 98 Total $ (391 ) $ (867 ) Derivatives designated as a hedging instrument: Interest rate products Other income (expense) $ (108 ) $ (238 ) Total $ (108 ) $ (238 ) The Company has agreements with certain of its derivative counterparties that contain a provision that if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations. In addition, the Company has agreements with certain of its derivative counterparties that contain a provision that if the Company fails to maintain its status as a well/adequate capitalized institution, then the counterparty could terminate the derivative positions and the Company would be required to settle its obligations under the agreements. As of June 30, 2017 , the termination value of derivatives in a net liability position, which includes accrued interest, was $2.3 million . The Company has minimum collateral posting thresholds with certain of its derivative counterparties, and has posted collateral of $3.8 million against its obligations under these agreements. If the Company had breached any of these provisions at June 30, 2017 , it could have been required to settle its obligations under the agreements at the termination value.

Summary of Significant Accoun17

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Basis of Financial Statement Presentation	Basis of Financial Statement Presentation The accompanying unaudited consolidated financial statements include the accounts of Provident Financial Services, Inc. and its wholly owned subsidiary, Provident Bank (the “Bank,” together with Provident Financial Services, Inc., the “Company”). In preparing the interim unaudited consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated statements of financial condition and the consolidated statements of income for the periods presented. Actual results could differ from these estimates. The allowance for loan losses, the valuation of securities available for sale and the valuation of deferred tax assets are material estimates that are particularly susceptible to near-term change. The interim unaudited consolidated financial statements reflect all normal and recurring adjustments, which are, in the opinion of management, considered necessary for a fair presentation of the financial condition and results of operations for the periods presented. The results of operations for the three and six months ended June 30, 2017 are not necessarily indicative of the results of operations that may be expected for all of 2017 . Certain information and note disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission. Certain reclassifications have been made in the consolidated financial statements to conform with current year classifications. These unaudited consolidated financial statements should be read in conjunction with the December 31, 2016 Annual Report to Stockholders on Form 10-K.
Impact of Recent Accounting Pronouncements	Impact of Recent Accounting Pronouncements In May 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-09, “Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting”. This update provides guidance about changes to terms or conditions of a share-based payment award which would require modification accounting. In particular, an entity is required to account for the effects of a modification if the fair value, vesting condition or the equity/liability classification of the modified award is not the same immediately before and after a change to the terms and conditions of the award. ASU 2017-09 is effective on a prospective basis for fiscal years beginning after December 15, 2017, with early adoption permitted. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. In March 2017, the FASB issued ASU 2017-08, “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities.” This ASU shortens the amortization period for premiums on callable debt securities by requiring that premiums be amortized to the first (or earliest) call date instead of as an adjustment to the yield over the contractual life. This change more closely aligns the accounting with the economics of a callable debt security and the amortization period with expectations that already are included in market pricing on callable debt securities. This ASU does not change the accounting for discounts on callable debt securities, which will continue to be amortized to the maturity date. This guidance includes only instruments that are held at a premium and have explicit call features. It does not include instruments that contain prepayment features, such as mortgage backed securities; nor does it include call options that are contingent upon future events or in which the timing or amount to be paid is not fixed. The effective date for this ASU is fiscal years beginning after December 15, 2018, including interim periods within the reporting period, with early adoption permitted. Transition is on a modified retrospective basis with an adjustment to retained earnings as of the beginning of the period of adoption. If early adopted in an interim period, adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-retirement Benefit Cost", which requires that companies disaggregate the service cost component from other components of net benefit cost. This update calls for companies that offer post-retirement benefits to present the service cost, which is the amount an employer has to set aside each quarter or fiscal year to cover the benefits, in the same line item with other current employee compensation costs. Other components of net benefit cost will be presented in the income statement separately from the service cost component and outside the subtotal of income from operations, if one is presented. ASU 2017-07 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, “Simplifying the Test for Goodwill Impairment.” The main objective of this ASU is to simplify the accounting for goodwill impairment by requiring that impairment charges be based upon the first step in the current two-step impairment test under Accounting Standards Codification (ASC) 350. Currently, if the fair value of a reporting unit is lower than its carrying amount (Step 1), an entity calculates any impairment charge by comparing the implied fair value of goodwill with its carrying amount (Step 2). The implied fair value of goodwill is calculated by deducting the fair value of all assets and liabilities of the reporting unit from the reporting unit’s fair value as determined in Step 1. To determine the implied fair value of goodwill, entities estimate the fair value of any unrecognized intangible assets and any corporate-level assets or liabilities that were included in the determination of the carrying amount and fair value of the reporting unit in Step 1. Under ASU 2017-04, if a reporting unit’s carrying amount exceeds its fair value, an entity will record an impairment charge based on that difference. The impairment charge will be limited to the amount of goodwill allocated to that reporting unit. This standard eliminates the requirement to calculate a goodwill impairment charge using Step 2. ASU 2017-04 does not change the guidance on completing Step 1 of the goodwill impairment test. Under ASU 2017-04, an entity will still be able to perform the current optional qualitative goodwill impairment assessment before determining whether to proceed to Step 1. The standard will be applied prospectively and is effective for annual and interim impairment tests performed in periods beginning after December 15, 2019. Early adoption is permitted for annual and interim goodwill impairment testing dates after January 1, 2017. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments," a new standard which addresses diversity in practice related to eight specific cash flow issues: debt prepayment or extinguishment costs, settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims, proceeds from the settlement of corporate-owned life insurance policies (including bank-owned life insurance policies), distributions received from equity method investees, beneficial interests in securitization transactions and separately identifiable cash flows and application of the predominance principle. ASU 2016-15 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Entities will apply the standard’s provisions using a retrospective transition method to each period presented. If it is impracticable to apply the amendments retrospectively for some of the issues, the amendments for those issues would be applied prospectively as of the earliest date practicable. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, “Measurement of Credit Losses on Financial Instruments.” The main objective of this ASU is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments by a reporting entity at each reporting date. The amendments in this ASU require financial assets measured at amortized cost to be presented at the net amount expected to be collected. The allowance for credit losses would represent a valuation account that would be deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The income statement would reflect the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. The measurement of expected credit losses would be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity will be required to use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. The amendments in ASU 2016-13 are effective for fiscal years, including interim periods, beginning after December 15, 2019. Early adoption of this ASU is permitted for fiscal years beginning after December 15, 2018. The Company is currently assessing the impact that the guidance will have on the Company’s consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842).” This ASU requires all lessees to recognize a lease liability and a right-of-use asset, measured at the present value of the future minimum lease payments, at the lease commencement date. Lessor accounting remains largely unchanged under the new guidance. The guidance is effective for fiscal years beginning after December 15, 2018, including interim reporting periods within that reporting period, with early adoption permitted. A modified retrospective approach must be applied for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company is currently assessing the impact that the guidance will have on the Company's consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, "Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Liabilities." This ASU addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. This amendment supersedes the guidance to classify equity securities with readily determinable fair values into different categories, requires equity securities, except equity method investments, to be measured at fair value with changes in the fair value recognized through net income, and simplifies the impairment assessment of equity investments without readily determinable fair values. The amendment requires public business entities that are required to disclose the fair value of financial instruments measured at amortized cost on the balance sheet to measure that fair value using the exit price notion. The amendment 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. The amendment requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or in the accompanying notes to the financial statements. The amendment reduces diversity in current practice by clarifying that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the entity’s other deferred tax assets. This amendment is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Entities should apply the amendment by means of a cumulative-effect adjustment as of the beginning of the fiscal year of adoption, with the exception of the amendment related to equity securities without readily determinable fair values, which should be applied prospectively to equity investments that exist as of the date of adoption. The Company is currently evaluating the impact that the guidance will have on the Company's consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers ." The objective of this amendment is to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP and IFRS. This update affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are in the scope of other standards. The ASU is effective for public business entities for financial statements issued for fiscal years beginning after December 15, 2017, and early adoption is permitted. Subsequently, the FASB issued the following standards related to ASU 2014-09: ASU 2016-08, “Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations;” ASU 2016-10, “Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing;” ASU 2016-11, “Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 815): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting;” and ASU 2016-12, “Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients” . These amendments are intended to improve and clarify the implementation guidance of ASU 2014-09 and have the same effective date as the original standard. The Company's revenue is comprised of net interest income on interest earning assets and liabilities and non-interest income. The scope of guidance explicitly excludes net interest income as well as other revenues associated with financial assets and liabilities, including loans, leases, securities and derivatives. Accordingly, the majority of the Company's revenues will not be affected. The Company is currently evaluating the impact that the guidance will have on the Company's consolidated financial statements.

Summary of Significant Accoun18

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Reconciliation of Numerators and Denominators of Basic and Diluted Earnings Per Share Calculations	The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share calculations for the three and six months ended June 30, 2017 and 2016 (dollars in thousands, except per share amounts): Three months ended June 30, 2017 2016 Net Income Weighted Average Common Shares Outstanding Per Share Amount Net Income Weighted Average Common Shares Outstanding Per Share Amount Net income $ 24,383 $ 21,356 Basic earnings per share: Income available to common stockholders $ 24,383 64,357,684 $ 0.38 $ 21,356 63,553,694 $ 0.34 Dilutive shares 183,387 172,819 Diluted earnings per share: Income available to common stockholders $ 24,383 64,541,071 $ 0.38 $ 21,356 63,726,513 $ 0.34 Six months ended June 30, 2017 2016 Net Income Weighted Average Common Shares Outstanding Per Share Amount Net Income Weighted Average Common Shares Outstanding Per Share Amount Net income $ 47,891 $ 42,329 Basic earnings per share: Income available to common stockholders $ 47,891 64,263,065 $ 0.75 $ 42,329 63,452,393 $ 0.67 Dilutive shares 192,808 170,741 Diluted earnings per share: Income available to common stockholders $ 47,891 64,455,873 $ 0.74 $ 42,329 63,623,134 $ 0.67

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value, Option, Quantitative Disclosures [Line Items]
Securities Available for Sale	The following tables present the amortized cost, gross unrealized gains, gross unrealized losses and the fair value for securities available for sale at June 30, 2017 and December 31, 2016 (in thousands): June 30, 2017 Amortized Gross Gross Fair US Treasury obligations $ 5,990 — (2 ) 5,988 Agency obligations 42,058 21 (30 ) 42,049 Mortgage-backed securities 963,291 7,187 (5,382 ) 965,096 State and municipal obligations 3,706 115 — 3,821 Corporate obligations 21,050 401 (13 ) 21,438 Equity securities 397 179 — 576 $ 1,036,492 7,903 (5,427 ) 1,038,968 December 31, 2016 Amortized Gross Gross Fair US Treasury obligations $ 7,995 13 — 8,008 Agency obligations 57,123 90 (25 ) 57,188 Mortgage-backed securities 952,992 7,249 (8,380 ) 951,861 State and municipal obligations 3,727 19 (3 ) 3,743 Corporate obligations 19,013 35 (11 ) 19,037 Equity securities 397 152 — 549 $ 1,041,247 7,558 (8,419 ) 1,040,386
Available for sale securities with temporary impairment	The following tables represent the Company’s disclosure regarding securities available for sale with temporary impairment at June 30, 2017 and December 31, 2016 (in thousands): June 30, 2017 Unrealized Losses Less than 12 months 12 months or longer Total Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses US Treasury obligations $ 5,988 (2 ) — — 5,988 (2 ) Agency obligations 31,017 (30 ) — — 31,017 (30 ) Mortgage-backed securities 480,698 (5,380 ) 47 (2 ) 480,745 (5,382 ) Corporate obligations — — 988 (13 ) 988 (13 ) $ 517,703 (5,412 ) 1,035 (15 ) 518,738 (5,427 ) December 31, 2016 Unrealized Losses Less than 12 months 12 months or longer Total Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Agency obligations $ 14,000 (25 ) — — 14,000 (25 ) Mortgage-backed securities 553,629 (8,377 ) 65 (3 ) 553,694 (8,380 ) State and municipal obligations 661 (3 ) — — 661 (3 ) Corporate obligations — — 990 (11 ) 990 (11 ) $ 568,290 (8,405 ) 1,055 (14 ) 569,345 (8,419 )
Investment Securities Held to Maturity	The following tables present the amortized cost, gross unrealized gains, gross unrealized losses and the estimated fair value for investment securities held to maturity at June 30, 2017 and December 31, 2016 (in thousands): June 30, 2017 Amortized cost Gross unrealized gains Gross unrealized losses Fair value Agency obligations $ 4,306 — (56 ) 4,250 Mortgage-backed securities 579 20 — 599 State and municipal obligations 478,564 10,746 (2,082 ) 487,228 Corporate obligations 9,288 7 (34 ) 9,261 $ 492,737 10,773 (2,172 ) 501,338 December 31, 2016 Amortized cost Gross unrealized gains Gross unrealized losses Fair value Agency obligations $ 4,306 2 (83 ) 4,225 Mortgage-backed securities 893 31 — 924 State and municipal obligations 473,653 6,635 (5,436 ) 474,852 Corporate obligations 9,331 7 (52 ) 9,286 $ 488,183 6,675 (5,571 ) 489,287 The following tables represent the Company’s disclosure on investment securities held to maturity with temporary impairment at June 30, 2017 and December 31, 2016 (in thousands): June 30, 2017 Unrealized Losses Less than 12 months 12 months or longer Total Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Agency obligations $ 3,851 (56 ) — — 3,851 (56 ) State and municipal obligations 78,613 (1,814 ) 9,198 (268 ) 87,811 (2,082 ) Corporate obligations 6,836 (34 ) — — 6,836 (34 ) $ 89,300 (1,904 ) 9,198 (268 ) 98,498 (2,172 ) December 31, 2016 Unrealized Losses Less than 12 months 12 months or longer Total Fair Gross Fair Gross Fair Gross Agency obligations $ 3,525 (83 ) — — 3,525 (83 ) State and municipal obligations 172,152 (5,132 ) 6,617 (304 ) 178,769 (5,436 ) Corporate obligations 4,697 (52 ) — — 4,697 (52 ) $ 180,374 (5,267 ) 6,617 (304 ) 186,991 (5,571 )
Available-for-sale Securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investment Securities Classified by Contractual Maturity	The amortized cost and fair value of securities available for sale at June 30, 2017 , by contractual maturity, are shown below (in thousands). Expected maturities may differ from contractual maturities due to prepayment or early call privileges of the issuer. June 30, 2017 Amortized cost Fair value Due in one year or less $ 44,455 44,414 Due after one year through five years 7,444 7,511 Due after five years through ten years 20,905 21,371 Due after ten years — — $ 72,804 73,296
Held-to-maturity Securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investment Securities Classified by Contractual Maturity	The amortized cost and fair value of investment securities in the held to maturity portfolio at June 30, 2017 by contractual maturity are shown below (in thousands). Expected maturities may differ from contractual maturities due to prepayment or early call privileges of the issuer. June 30, 2017 Amortized cost Fair value Due in one year or less $ 22,961 23,006 Due after one year through five years 56,527 57,412 Due after five years through ten years 252,672 258,915 Due after ten years 159,998 161,406 $ 492,158 500,739

Loans Receivable and Allowanc20

Loans Receivable and Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Schedule of Summarized Loans Receivable	Loans receivable at June 30, 2017 and December 31, 2016 are summarized as follows (in thousands): June 30, 2017 December 31, 2016 Mortgage loans: Residential $ 1,168,557 1,211,672 Commercial 1,992,449 1,978,569 Multi-family 1,384,590 1,402,054 Construction 305,860 264,814 Total mortgage loans 4,851,456 4,857,109 Commercial loans 1,687,944 1,630,444 Consumer loans 492,838 516,755 Total gross loans 7,032,238 7,004,308 Purchased credit-impaired ("PCI") loans 1,266 1,272 Premiums on purchased loans 4,492 4,968 Unearned discounts (37 ) (39 ) Net deferred fees (6,911 ) (7,023 ) Total loans $ 7,031,048 7,003,486
Summary of Aging Loans Receivable by Portfolio Segment and Class	The following tables summarize the aging of loans receivable by portfolio segment and class of loans, excluding PCI loans (in thousands): June 30, 2017 30-59 Days 60-89 Days Non-accrual Recorded Total Past Due Current Total Loans Receivable Mortgage loans: Residential $ 4,861 3,521 9,126 — 17,508 1,151,049 1,168,557 Commercial 522 1,010 8,727 — 10,259 1,982,190 1,992,449 Multi-family — — — — — 1,384,590 1,384,590 Construction — — 2,517 — 2,517 303,343 305,860 Total mortgage loans 5,383 4,531 20,370 — 30,284 4,821,172 4,851,456 Commercial loans 557 25 16,089 — 16,671 1,671,273 1,687,944 Consumer loans 1,735 1,516 2,448 — 5,699 487,139 492,838 Total gross loans $ 7,675 6,072 38,907 — 52,654 6,979,584 7,032,238 December 31, 2016 30-59 Days 60-89 Days Non-accrual Recorded Total Past Current Total Loans Receivable Mortgage loans: Residential $ 5,891 6,563 12,021 — 24,475 1,187,197 1,211,672 Commercial — 80 7,493 — 7,573 1,970,996 1,978,569 Multi-family — — 553 — 553 1,401,501 1,402,054 Construction — — 2,517 — 2,517 262,297 264,814 Total mortgage loans 5,891 6,643 22,584 — 35,118 4,821,991 4,857,109 Commercial loans 1,656 357 16,787 — 18,800 1,611,644 1,630,444 Consumer loans 2,561 1,199 3,030 — 6,790 509,965 516,755 Total gross loans $ 10,108 8,199 42,401 — 60,708 6,943,600 7,004,308
Summary of Loans Receivable by Portfolio Segment and Impairment Method	The following table summarizes loans receivable by portfolio segment and impairment method, excluding PCI loans (in thousands): June 30, 2017 Mortgage loans Commercial loans Consumer loans Total Portfolio Segments Individually evaluated for impairment $ 30,779 19,557 2,334 52,670 Collectively evaluated for impairment 4,820,677 1,668,387 490,504 6,979,568 Total gross loans $ 4,851,456 1,687,944 492,838 7,032,238 December 31, 2016 Mortgage loans Commercial loans Consumer loans Total Portfolio Segments Individually evaluated for impairment $ 29,551 20,255 2,213 52,019 Collectively evaluated for impairment 4,827,558 1,610,189 514,542 6,952,289 Total gross loans $ 4,857,109 1,630,444 516,755 7,004,308
Summary of Allowance for Loan Losses by Portfolio Segment and Impairment Classification	The allowance for loan losses is summarized by portfolio segment and impairment classification as follows (in thousands): June 30, 2017 Mortgage loans Commercial loans Consumer loans Total Individually evaluated for impairment $ 1,782 2,230 92 4,104 Collectively evaluated for impairment 27,044 28,855 2,859 58,758 Total gross loans $ 28,826 31,085 2,951 62,862 December 31, 2016 Mortgage loans Commercial loans Consumer loans Total Individually evaluated for impairment $ 1,986 268 80 2,334 Collectively evaluated for impairment 27,640 28,875 3,034 59,549 Total gross loans $ 29,626 29,143 3,114 61,883
Schedule of Troubled Debt Restructuring	June 30, 2017 June 30, 2016 Troubled Debt Restructurings Subsequently Defaulted Number of Loans Outstanding Recorded Investment Number of Loans Outstanding Recorded Investment ($ in thousands) Mortgage loans: Residential — $ — 1 $ 252 Total mortgage loans — — 1 252 Commercial loans — — — $ — Consumer loans — — — — Total restructured loans — $ — 1 $ 252 The following tables present the number of loans modified as TDRs during the three and six months ended June 30, 2017 and 2016 , along with their balances immediately prior to the modification date and post-modification as of June 30, 2017 and 2016 . There were no loans modified as TDRs during the three and six months ended June 30, 2016. For the three months ended June 30, 2017 June 30, 2016 Troubled Debt Restructurings Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment ($ in thousands) Mortgage loans: Residential 3 $ 1,836 $ 1,796 — $ — $ — Total mortgage loans 3 1,836 1,796 — — — Total restructured loans 3 $ 1,836 $ 1,796 — $ — $ — For the six months ended June 30, 2017 June 30, 2016 Troubled Debt Restructurings Number of Pre-Modification Post-Modification Number of Pre-Modification Post-Modification ($ in thousands) Mortgage loans: Residential 6 $ 2,838 $ 2,774 — $ — $ — Total mortgage loans 6 2,838 2,774 — — — Commercial loans 1 1,300 1,240 — — — Consumer loans 2 240 232 — — — Total restructured loans 9 $ 4,378 $ 4,246 — $ — $ —
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period	The following table summarizes the changes in the accretable yield for PCI loans during the three and six months ended June 30, 2017 and 2016 (in thousands): Three months ended June 30, Six months ended June 30, 2017 2016 2017 2016 Beginning balance $ 172 503 200 676 Accretion (96 ) (419 ) (145 ) (840 ) Reclassification from non-accretable discount 82 244 103 492 Ending balance $ 158 328 158 328
Schedule of Allowance for Loan Losses by Portfolio Segment	The activity in the allowance for loan losses by portfolio segment for the three and six months ended June 30, 2017 and 2016 was as follows (in thousands): Three months ended June 30, Mortgage loans Commercial loans Consumer loans Total Portfolio Segments Unallocated Total 2017 Balance at beginning of period $ 29,318 29,786 3,051 62,155 — 62,155 Provision charged (credited) to operations (292 ) 1,777 215 1,700 — 1,700 Recoveries of loans previously charged-off 7 73 225 305 — 305 Loans charged-off (207 ) (551 ) (540 ) (1,298 ) — (1,298 ) Balance at end of period $ 28,826 31,085 2,951 62,862 — 62,862 2016 Balance at beginning of period $ 30,849 28,255 3,087 62,191 — 62,191 Provision charged (credited) to operations 497 1,311 (108 ) 1,700 — 1,700 Recoveries of loans previously charged-off 401 192 220 813 — 813 Loans charged-off (113 ) (3,459 ) (199 ) (3,771 ) — (3,771 ) Balance at end of period $ 31,634 26,299 3,000 60,933 — 60,933 Six months ended June 30, Mortgage Commercial Consumer Total Portfolio Unallocated Total 2017 Balance at beginning of period $ 29,626 29,143 3,114 61,883 — 61,883 Provision charged (credited) to operations (423 ) 3,394 229 3,200 — 3,200 Recoveries of loans previously charged-off 61 531 401 993 — 993 Loans charged-off (438 ) (1,983 ) (793 ) (3,214 ) — (3,214 ) Balance at end of period $ 28,826 31,085 2,951 62,862 — 62,862 2016 Balance at beginning of period $ 32,094 25,829 3,501 61,424 — 61,424 Provision charged (credited) to operations (695 ) 4,269 (374 ) 3,200 — 3,200 Recoveries of loans previously charged-off 573 283 537 1,393 — 1,393 Loans charged-off (338 ) (4,082 ) (664 ) (5,084 ) — (5,084 ) Balance at end of period $ 31,634 26,299 3,000 60,933 — 60,933
Summary of Impaired Loans Receivable by Class	The following table presents loans individually evaluated for impairment by class and loan category, excluding PCI loans (in thousands): June 30, 2017 December 31, 2016 Unpaid Principal Balance Recorded Investment Related Allowance Average Recorded Investment Interest Income Recognized Unpaid Principal Balance Recorded Investment Related Allowance Average Recorded Investment Interest Income Recognized Loans with no related allowance Mortgage loans: Residential $ 12,453 9,858 — 9,963 239 10,691 7,881 — 8,027 484 Commercial 4,600 4,472 — 4,472 — 1,556 1,556 — 1,586 40 Construction 2,553 2,517 — 2,545 — 2,553 2,517 — 2,514 — Total 19,606 16,847 — 16,980 239 14,800 11,954 — 12,127 524 Commercial loans 19,420 15,912 — 16,740 152 21,830 18,874 — 13,818 259 Consumer loans 1,445 911 — 960 27 1,493 981 — 1,026 59 Total impaired loans $ 40,471 33,670 — 34,680 418 38,123 31,809 — 26,971 842 Loans with an allowance recorded Mortgage loans: Residential $ 13,890 12,856 1,636 12,930 249 14,169 13,520 1,716 13,705 519 Commercial 1,076 1,076 146 1,094 27 4,138 4,077 270 4,111 55 Construction — — — — — — — — — — Total 14,966 13,932 1,782 14,024 276 18,307 17,597 1,986 17,816 574 Commercial loans 3,708 3,645 2,230 3,688 35 1,381 1,381 268 5,956 4 Consumer loans 1,434 1,423 92 1,462 38 1,242 1,232 80 1,259 66 Total impaired loans $ 20,108 19,000 4,104 19,174 349 20,930 20,210 2,334 25,031 644 Total impaired loans Mortgage loans: Residential $ 26,343 22,714 1,636 22,893 488 24,860 21,401 1,716 21,732 1,003 Commercial 5,676 5,548 146 5,566 27 5,694 5,633 270 5,697 95 Construction 2,553 2,517 — 2,545 — 2,553 2,517 — 2,514 — Total 34,572 30,779 1,782 31,004 515 33,107 29,551 1,986 29,943 1,098 Commercial loans 23,128 19,557 2,230 20,428 187 23,211 20,255 268 19,774 263 Consumer loans 2,879 2,334 92 2,422 65 2,735 2,213 80 2,285 125 Total impaired loans $ 60,579 52,670 4,104 53,854 767 59,053 52,019 2,334 52,002 1,486
Summary of Loans Receivable by Credit Quality Risk Rating Indicator	Loans receivable by credit quality risk rating indicator, excluding PCI loans, are as follows (in thousands): At June 30, 2017 Residential Commercial mortgage Multi- family Construction Total mortgages Commercial Consumer Total loans Special mention $ 3,521 25,567 552 — 29,640 19,606 1,516 50,762 Substandard 9,125 25,588 520 2,517 37,750 38,015 2,448 78,213 Doubtful — — — — — — — — Loss — — — — — — — — Total classified and criticized 12,646 51,155 1,072 2,517 67,390 57,621 3,964 128,975 Pass/Watch 1,155,911 1,941,294 1,383,518 303,343 4,784,066 1,630,323 488,874 6,903,263 Total $ 1,168,557 1,992,449 1,384,590 305,860 4,851,456 1,687,944 492,838 7,032,238 At December 31, 2016 Residential Commercial mortgage Multi- family Construction Total mortgages Commercial Consumer Total loans Special mention $ 6,563 25,329 563 — 32,455 14,840 1,242 48,537 Substandard 12,021 23,011 553 2,517 38,102 47,255 2,940 88,297 Doubtful — — — — — — — — Loss — — — — — — — — Total classified and criticized 18,584 48,340 1,116 2,517 70,557 62,095 4,182 136,834 Pass/Watch 1,193,088 1,930,229 1,400,938 262,297 4,786,552 1,568,349 512,573 6,867,474 Total $ 1,211,672 1,978,569 1,402,054 264,814 4,857,109 1,630,444 516,755 7,004,308

Deposits (Tables)

Deposits (Tables)	6 Months Ended
	Jun. 30, 2017
Banking and Thrift [Abstract]
Schedule of Deposits	Deposits at June 30, 2017 and December 31, 2016 are summarized as follows (in thousands): June 30, 2017 December 31, 2016 Savings $ 1,107,051 1,099,020 Money market 1,535,995 1,582,750 NOW 1,853,736 1,871,298 Non-interest bearing 1,353,757 1,349,378 Certificates of deposit 649,998 651,183 Total deposits $ 6,500,537 6,553,629

Components of Net Periodic Be22

Components of Net Periodic Benefit Cost (Tables)	6 Months Ended
	Jun. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Net Periodic Benefit Cost (Increase)	Net periodic (increase) benefit cost for pension benefits and other post-retirement benefits for the three and six months ended June 30, 2017 and 2016 includes the following components (in thousands): Three months ended June 30, Six months ended June 30, Pension benefits Other post- retirement benefits Pension benefits Other post- retirement benefits 2017 2016 2017 2016 2017 2016 2017 2016 Service cost $ — — 26 37 $ — — 52 75 Interest cost 307 312 218 285 614 624 436 569 Expected return on plan assets (638 ) (612 ) — — (1,276 ) (1,224 ) — — Amortization of prior service cost — — — — — — — — Amortization of the net loss 230 236 (169 ) — 460 472 (338 ) — Net periodic (increase) benefit cost $ (101 ) (64 ) 75 322 $ (202 ) (128 ) 150 644

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Assets and Liabilities Reported on Consolidated Statements of Financial Condition at Fair Values	The following tables present the assets and liabilities reported on the consolidated statements of financial condition at their fair values as of June 30, 2017 and December 31, 2016 , by level within the fair value hierarchy: Fair Value Measurements at Reporting Date Using: (In thousands) June 30, 2017 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Measured on a recurring basis: Securities available for sale: U.S. Treasury obligations $ 5,988 5,988 — — Agency obligations 42,049 42,049 — — Mortgage-backed securities 965,096 — 965,096 — State and municipal obligations 3,821 — 3,821 — Corporate obligations 21,438 — 21,438 — Equity securities 576 576 — — Total securities available for sale 1,038,968 48,613 990,355 — Derivative assets 7,946 — 7,946 — $ 1,046,914 48,613 998,301 — Derivative liabilities $ 7,560 — 7,560 — Measured on a non-recurring basis: Loans measured for impairment based on the fair value of the underlying collateral $ 6,890 — — 6,890 Foreclosed assets 6,603 — — 6,603 $ 13,493 — — 13,493 Fair Value Measurements at Reporting Date Using: (In thousands) December 31, 2016 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Measured on a recurring basis: Securities available for sale: U.S. Treasury obligations $ 8,008 8,008 — — Agency obligations 57,188 57,188 — — Mortgage-backed securities 951,861 — 951,861 — State and municipal obligations 3,743 — 3,743 — Corporate obligations 19,037 — 19,037 — Equity securities 549 549 — — Total securities available for sale $ 1,040,386 65,745 974,641 — Derivative assets 7,441 — 7,441 — $ 1,047,827 65,745 982,082 — Derivative liabilities $ 6,750 — 6,750 — Measured on a non-recurring basis: Loans measured for impairment based on the fair value of the underlying collateral $ 11,001 — — 11,001 Foreclosed assets 7,991 — — 7,991 $ 18,992 — — 18,992
Schedule of Financial Instruments at Carrying and Fair Values	The following tables present the Company’s financial instruments at their carrying and fair values as of June 30, 2017 and December 31, 2016 . Fair values are presented by level within the fair value hierarchy. Fair Value Measurements at June 30, 2017 Using: (Dollars in thousands) Carrying value Fair value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets: Cash and cash equivalents $ 153,402 153,402 153,402 — — Securities available for sale: U.S. Treasury obligations 5,988 5,988 5,988 — — Agency obligations 42,049 42,049 42,049 — — Mortgage-backed securities 965,096 965,096 — 965,096 — State and municipal obligations 3,821 3,821 — 3,821 — Corporate obligations 21,438 21,438 — 21,438 — Equity securities 576 576 576 — — Total securities available for sale $ 1,038,968 1,038,968 48,613 990,355 — Investment securities held to maturity: Agency obligations 4,306 4,250 4,250 — — Mortgage-backed securities 579 599 — 599 — State and municipal obligations 478,564 487,228 — 487,228 — Corporate obligations 9,288 9,261 — 9,261 — Total securities held to maturity $ 492,737 501,338 4,250 497,088 — FHLBNY stock 78,949 78,949 78,949 — — Loans, net of allowance for loan losses 6,968,186 6,961,290 — — 6,961,290 Derivative assets 7,946 7,946 — 7,946 — Financial liabilities: Deposits other than certificates of deposits $ 5,850,539 5,850,539 5,850,539 — — Certificates of deposit 649,998 650,663 — 650,663 — Total deposits $ 6,500,537 6,501,202 5,850,539 650,663 — Borrowings 1,676,219 1,677,676 — 1,677,676 — Derivative liabilities 7,560 7,560 — 7,560 — Fair Value Measurements at December 31, 2016 Using: (Dollars in thousands) Carrying value Fair value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets: Cash and cash equivalents $ 144,297 144,297 144,297 — — Securities available for sale: U.S. Treasury obligations 8,008 8,008 8,008 — — Agency obligations 57,188 57,188 57,188 — — Mortgage-backed securities 951,861 951,861 — 951,861 — State and municipal obligations 3,743 3,743 — 3,743 — Corporate obligations 19,037 19,037 — 19,037 — Equity securities 549 549 549 — — Total securities available for sale $ 1,040,386 1,040,386 65,745 974,641 — Investment securities held to maturity: Agency obligations $ 4,306 4,225 4,225 — — Mortgage-backed securities 893 924 — 924 — State and municipal obligations 473,653 474,852 — 474,852 — Corporate obligations 9,331 9,286 — 9,286 — Total securities held to maturity $ 488,183 489,287 4,225 485,062 — FHLBNY stock 75,726 75,726 75,726 — — Loans, net of allowance for loan losses 6,941,603 6,924,440 — — 6,924,440 Derivative assets 7,441 7,441 — 7,441 — Financial liabilities: Deposits other than certificates of deposits $ 5,902,446 5,902,446 5,902,446 — — Certificates of deposit 651,183 653,772 — 653,772 — Total deposits $ 6,553,629 6,556,218 5,902,446 653,772 — Borrowings 1,612,745 1,617,023 — 1,617,023 — Derivative liabilities 6,750 6,750 — 6,750 —

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Components of Other Comprehensive Income (Loss)	The following table presents the components of other comprehensive income, both gross and net of tax, for the three and six months ended June 30, 2017 and 2016 (in thousands): Three months ended June 30, 2017 2016 Before Tax Tax Effect After Tax Before Tax Tax Effect After Tax Components of Other Comprehensive Income: Unrealized gains and losses on securities available for sale: Net gains arising during the period $ 2,048 (820 ) 1,228 4,978 (1,999 ) 2,979 Reclassification adjustment for gains included in net income — — — — — — Total 2,048 (820 ) 1,228 4,978 (1,999 ) 2,979 Unrealized losses on derivatives (cash flow hedges) (5 ) 2 (3 ) (284 ) 114 (170 ) Amortization related to post-retirement obligations 61 (24 ) 37 234 (94 ) 140 Total other comprehensive income $ 2,104 (842 ) 1,262 4,928 (1,979 ) 2,949 Six months ended June 30, 2017 2016 Before Tax After Before Tax After Components of Other Comprehensive Income: Unrealized gains and losses on securities available for sale: Net gains arising during the period $ 3,336 (1,337 ) 1,999 16,833 (6,760 ) 10,073 Reclassification adjustment for gains included in net income — — — (95 ) 38 (57 ) Total 3,336 (1,337 ) 1,999 16,738 (6,722 ) 10,016 Unrealized gains (losses) on derivatives (cash flow hedges) 87 (35 ) 52 (988 ) 397 (591 ) Amortization related to post-retirement obligations 114 (45 ) 69 399 (160 ) 239 Total other comprehensive income $ 3,537 (1,417 ) 2,120 16,149 (6,485 ) 9,664
Components of Accumulated Other Comprehensive Income, Net of Tax	The following tables present the changes in the components of accumulated other comprehensive income (loss), net of tax, for the three and six months ended June 30, 2017 and 2016 (in thousands): Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax for the three months ended June 30, 2017 2016 Unrealized Sale Post- Retirement Unrealized gains on Derivatives (cash flow hedges) Accumulated Unrealized for Sale Post- Retirement Unrealized (losses) on Derivatives (cash flow hedges) Accumulated Balance at $ 261 (3,024 ) 224 (2,539 ) 10,988 (6,325 ) (494 ) 4,169 Current period other comprehensive income (loss) 1,228 37 (3 ) 1,262 2,979 140 (170 ) 2,949 Balance at June 30, $ 1,489 (2,987 ) 221 (1,277 ) 13,967 (6,185 ) (664 ) 7,118 Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax for the six months ended June 30, 2017 2016 Unrealized Sale Post- Retirement Unrealized gains on Derivatives (cash flow hedges) Accumulated Unrealized for Sale Post- Retirement Unrealized (losses) on Derivatives (cash flow hedges) Accumulated Balance at December 31, $ (510 ) (3,056 ) 169 (3,397 ) 3,951 (6,424 ) (73 ) (2,546 ) Current period other comprehensive income (loss) 1,999 69 52 2,120 10,016 239 (591 ) 9,664 Balance at June 30, $ 1,489 (2,987 ) 221 (1,277 ) 13,967 (6,185 ) (664 ) 7,118
Summary of Reclassifications Out of Accumulated Other Comprehensive Income	The following tables summarize the reclassifications out of accumulated other comprehensive income to the consolidated statements of income for the three and six months ended June 30, 2017 and 2016 (in thousands): Reclassifications From Accumulated Other Comprehensive Amount reclassified from AOCI for the three months ended June 30, Affected line item in the Consolidated 2017 2016 Details of AOCI: Securities available for sale: Realized net gains on the sale of securities available for sale $ — — Net gain on securities transactions — — Income tax expense — — Net of tax Post-retirement obligations: Amortization of actuarial losses 61 236 Compensation and employee benefits (1) (24 ) (96 ) Income tax expense 37 140 Net of tax Total reclassifications $ 37 140 Net of tax Reclassifications From Accumulated Other Comprehensive Amount reclassified from AOCI for the six months ended June 30, Affected line item in the Consolidated 2017 2016 Details of AOCI: Securities available for sale: Realized net gains on the sale of securities available for sale $ — 95 Net gain on securities transactions — (38 ) Income tax expense — 57 Net of tax Post-retirement obligations: Amortization of actuarial losses 122 472 Compensation and employee benefits (1) (48 ) (190 ) Income tax expense 74 282 Net of tax Total reclassifications $ 74 339 Net of tax (1) This item is included in the computation of net periodic benefit cost. See Note 5. Components of Net Periodic Benefit Cost.

Derivatives and Hedging Activ25

Derivatives and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value of Derivative Financial Instruments	The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the Consolidated Statements of Financial Condition at June 30, 2017 and December 31, 2016 (in thousands): At June 30, 2017 Asset Derivatives Liability Derivatives Consolidated Statements of Financial Condition Fair Value Consolidated Statements of Financial Condition Fair Value Derivatives not designated as a hedging instrument: Interest rate products Other assets $ 7,575 Other liabilities $ 7,560 Credit contracts Other assets 2 Other liabilities — Total derivatives not designated as a hedging instrument $ 7,577 $ 7,560 Derivatives designated as a a hedging instrument: Interest rate products Other assets $ 369 Other liabilities $ — Total derivatives designated as a hedging instrument $ 369 $ — At December 31, 2016 Asset Derivatives Liability Derivatives Consolidated Statements of Financial Condition Fair Value Consolidated Statements of Financial Condition Fair Value Derivatives not designated as a hedging instrument: Interest rate products Other assets $ 7,156 Other liabilities $ 6,750 Credit contracts Other assets 3 Other liabilities — Total derivatives not designated as a hedging instrument $ 7,159 $ 6,750 Derivatives designated as a a hedging instrument: Interest rate products Other assets $ 282 Other liabilities $ — Total derivatives designated as a hedging instrument $ 282 $ —
Effect of the derivative financial instruments on the Income Statement	The tables below present the effect of the Company’s derivative financial instruments on the Consolidated Statements of Income during the three and six months ended June 30, 2017 and 2016 (in thousands). Gain (loss) recognized in Income on derivatives for the three months ended Consolidated Statements of Income June 30, 2017 June 30, 2016 Derivatives not designated as a hedging instrument: Interest rate products Other income (expense) $ (166 ) $ (425 ) Credit contracts Other income (expense) — (6 ) Total $ (166 ) $ (431 ) Derivatives designated as a hedging instrument: Interest rate products Other income (expense) $ (51 ) $ (92 ) Total $ (51 ) $ (92 ) Gain (loss) recognized in Income on derivatives for the six months ended Consolidated Statements of Income June 30, 2017 June 30, 2016 Derivatives not designated as a hedging instrument: Interest rate products Other income (expense) $ (392 ) $ (965 ) Credit contracts Other income (expense) 1 98 Total $ (391 ) $ (867 ) Derivatives designated as a hedging instrument: Interest rate products Other income (expense) $ (108 ) $ (238 ) Total $ (108 ) $ (238 )

Summary of Significant Accoun26

Summary of Significant Accounting Policies (Narrative) (Detail) - shares	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Accounting Policies [Abstract]
Anti-dilutive stock options and awards excluded from computation of earnings per share	437,904	580,314

Summary of Significant Accoun27

Summary of Significant Accounting Policies (Reconciliation of Numerators and Denominators of Basic and Diluted Earnings Per Share Calculations) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accounting Policies [Abstract]
Net income	$ 24,383	$ 21,356	$ 47,891	$ 42,329
Income available to common stockholders, basic	24,383	21,356	47,891	42,329
Income available to common stockholders, diluted	$ 24,383	$ 21,356	$ 47,891	$ 42,329
Weighted average common shares outstanding, basic (in shares)	64,357,684	63,553,694	64,263,065	63,452,393
Dilutive shares (in shares)	183,387	172,819	192,808	170,741
Weighted average common shares outstanding, diluted (in shares)	64,541,071	63,726,513	64,455,873	63,623,134
Income available to common stockholders, per share amount, basic (usd per share)	$ 0.38	$ 0.34	$ 0.75	$ 0.67
Income available to common stockholders, per share amount, diluted (usd per share)	$ 0.38	$ 0.34	$ 0.74	$ 0.67

Investment Securities (Narrativ

Investment Securities (Narrative) (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)positionsecurity	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)positionsecurity	Jun. 30, 2016USD ($)	Dec. 31, 2016USD ($)positionsecurity
Schedule of Held-to-maturity Securities [Line Items]
Securities available for sale, at fair value	$ 1,038,968,000		$ 1,038,968,000		$ 1,040,386,000
Investment securities held to maturity	$ 492,737,000		$ 492,737,000		$ 488,183,000
Total number of all held to maturity and available for sale securities in an unrealized loss position | security	266		266		419
Amortized cost	$ 1,036,492,000		$ 1,036,492,000		$ 1,041,247,000
Proceeds from the sale of securities available for sale	$ 0	$ 0	$ 0
Gross gains				$ 95,000
Gross losses				0
Proceeds from maturities, prepayments and calls of short-term investments				2,200,000
Proceeds from calls on securities available for sale		0		0
Number of securities in an unrealized loss position | position	83		83		87
Other-than-temporary impairment charges, net	$ 0		$ 0
Proceeds from calls of held to maturity securities	7,900,000	4,300,000	20,700,000	14,900,000
Recognized gain on calls of securities, held-to-maturity portfolio	11,000	1,000	11,000	2,000
Recognized loss on calls of securities held-to-maturity portfolio	0	$ 0	0	$ 0
Investment securities held to maturity, fair value	$ 501,338,000		$ 501,338,000		$ 489,287,000
Number of securities in an unrealized loss position | position	183		183		332
Private Label Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	$ 53,000		$ 53,000
Number of securities in an unrealized loss position | position	2		2
Unrealized losses			$ 2,000
Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities available for sale, at fair value	$ 965,096,000		965,096,000		$ 951,861,000
Investment securities held to maturity	579,000		579,000		893,000
Amortized cost	963,291,000		963,291,000		952,992,000
Held-to-maturity securities, amortized cost	579,000		579,000
Investment securities held to maturity, fair value	599,000		599,000		924,000
Equity Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities available for sale, at fair value	576,000		576,000		549,000
Amortized cost	$ 397,000		$ 397,000		$ 397,000
External Credit Rating, Non Investment Grade [Member] | Private Label Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Number of securities in an unrealized loss position | position	0		0

Investment Securities (Securiti

Investment Securities (Securities Available for Sale) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 1,036,492	$ 1,041,247
Gross unrealized gains	7,903	7,558
Gross unrealized losses	(5,427)	(8,419)
Fair value	1,038,968	1,040,386
US Treasury Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	5,990	7,995
Gross unrealized gains	0	13
Gross unrealized losses	(2)	0
Fair value	5,988	8,008
Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	42,058	57,123
Gross unrealized gains	21	90
Gross unrealized losses	(30)	(25)
Fair value	42,049	57,188
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	963,291	952,992
Gross unrealized gains	7,187	7,249
Gross unrealized losses	(5,382)	(8,380)
Fair value	965,096	951,861
State And Municipal Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	3,706	3,727
Gross unrealized gains	115	19
Gross unrealized losses	0	(3)
Fair value	3,821	3,743
Corporate Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	21,050	19,013
Gross unrealized gains	401	35
Gross unrealized losses	(13)	(11)
Fair value	21,438	19,037
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	397	397
Gross unrealized gains	179	152
Gross unrealized losses	0	0
Fair value	$ 576	$ 549

Investment Securities (Investme

Investment Securities (Investment Securities Available for Sale by Contractual Maturity) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 1,036,492	$ 1,041,247
Securities available for sale, at fair value	1,038,968	$ 1,040,386
Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Due in one year or less, amortized cost	44,455
Due after one year through five years, amortized cost	7,444
Due after five years through ten years, amortized cost	20,905
Due after ten years, amortized cost	0
Amortized cost	72,804
Due in one year or less, fair value	44,414
Due after one year through five years, fair value	7,511
Due after five years through ten years, fair value	21,371
Due after ten years , fair value	0
Securities available for sale, at fair value	$ 73,296

Investment Securities (Disclosu

Investment Securities (Disclosure Regarding Length of Time on Securities Available for Sale with Temporary Impairment) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	$ 517,703	$ 568,290
Less than 12 months, gross unrealized losses	(5,412)	(8,405)
12 months or longer, fair value	1,035	1,055
12 months or longer, gross unrealized losses	(15)	(14)
Total, fair value	518,738	569,345
Total, gross unrealized losses	(5,427)	(8,419)
US Treasury Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	5,988
Less than 12 months, gross unrealized losses	(2)
12 months or longer, fair value	0
12 months or longer, gross unrealized losses	0
Total, fair value	5,988
Total, gross unrealized losses	(2)	0
Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	31,017	14,000
Less than 12 months, gross unrealized losses	(30)	(25)
12 months or longer, fair value	0	0
12 months or longer, gross unrealized losses	0	0
Total, fair value	31,017	14,000
Total, gross unrealized losses	(30)	(25)
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	480,698	553,629
Less than 12 months, gross unrealized losses	(5,380)	(8,377)
12 months or longer, fair value	47	65
12 months or longer, gross unrealized losses	(2)	(3)
Total, fair value	480,745	553,694
Total, gross unrealized losses	(5,382)	(8,380)
State and municipal obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value		661
Less than 12 months, gross unrealized losses		(3)
12 months or longer, fair value		0
12 months or longer, gross unrealized losses		0
Total, fair value		661
Total, gross unrealized losses		(3)
Corporate Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	0	0
Less than 12 months, gross unrealized losses	0	0
12 months or longer, fair value	988	990
12 months or longer, gross unrealized losses	(13)	(11)
Total, fair value	988	990
Total, gross unrealized losses	$ (13)	$ (11)

Investment Securities (Invest32

Investment Securities (Investment Securities Held to Maturity) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	$ 492,737	$ 488,183
Gross unrealized gains	10,773	6,675
Gross unrealized losses	(2,172)	(5,571)
Fair value	501,338	489,287
Agency Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	4,306	4,306
Gross unrealized gains	0	2
Gross unrealized losses	(56)	(83)
Fair value	4,250	4,225
Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	579	893
Gross unrealized gains	20	31
Gross unrealized losses	0	0
Fair value	599	924
State And Municipal Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	478,564	473,653
Gross unrealized gains	10,746	6,635
Gross unrealized losses	(2,082)	(5,436)
Fair value	487,228	474,852
Corporate Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	9,288	9,331
Gross unrealized gains	7	7
Gross unrealized losses	(34)	(52)
Fair value	$ 9,261	$ 9,286

Investment Securities (Securi33

Investment Securities (Securities Held to Maturity by Contractual Maturity) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	$ 492,737	$ 488,183
Fair value	501,338	$ 489,287
Held-to-maturity Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Due in one year or less, amortized cost	22,961
Due after one year through five years, amortized cost	56,527
Due after five years through ten years, amortized cost	252,672
Due after ten years, amortized cost	159,998
Amortized cost	492,158
Due in one year or less, fair value	23,006
Due after one year through five years, fair value	57,412
Due after five years through ten years, fair value	258,915
Due after ten years, fair value	161,406
Fair value	$ 500,739

Investment Securities (Disclo34

Investment Securities (Disclosure Regarding Length of Time on Investment Securities with Temporary Impairment) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	$ 89,300	$ 180,374
Less than 12 months, gross unrealized losses	(1,904)	(5,267)
12 months or longer, fair value	9,198	6,617
12 months or longer, gross unrealized losses	(268)	(304)
Total, fair value	98,498	186,991
Total, gross unrealized losses	(2,172)	(5,571)
Agency Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	3,851	3,525
Less than 12 months, gross unrealized losses	(56)	(83)
12 months or longer, fair value	0	0
12 months or longer, gross unrealized losses	0	0
Total, fair value	3,851	3,525
Total, gross unrealized losses	(56)	(83)
State And Municipal Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	78,613	172,152
Less than 12 months, gross unrealized losses	(1,814)	(5,132)
12 months or longer, fair value	9,198	6,617
12 months or longer, gross unrealized losses	(268)	(304)
Total, fair value	87,811	178,769
Total, gross unrealized losses	(2,082)	(5,436)
Corporate Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	6,836	4,697
Less than 12 months, gross unrealized losses	(34)	(52)
12 months or longer, fair value	0	0
12 months or longer, gross unrealized losses	0	0
Total, fair value	6,836	4,697
Total, gross unrealized losses	$ (34)	$ (52)

Loans Receivable and Allowanc35

Loans Receivable and Allowance for Loan Losses (Narrative) (Detail)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017USD ($)Contract	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)ContractSecurityLoantroubled_debt_restructuringborrower	Jun. 30, 2016USD ($)SecurityLoan	Jun. 30, 2017USD ($)ContractSecurityLoan	Dec. 31, 2016USD ($)ContractSecurityLoantroubled_debt_restructuringborrower	Jun. 30, 2016SecurityLoan	May 30, 2014USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal amount of nonaccrual loans	$ 38,900,000		$ 38,900,000		$ 38,900,000	$ 42,400,000
Loans less than 90 days past due	$ 724,000		$ 724,000		$ 724,000	$ 7,300,000
Number of loans 90 days past due and still accruing | Contract	0		0		0	0
Recorded Investment greater than 90 days accruing	$ 0		$ 0		$ 0	$ 0
Impaired loan defined floor limit (greater than)	1,000,000		$ 1,000,000		1,000,000
Impaired loans number | SecurityLoan			150			141
Impaired loans	52,670,000		$ 52,670,000		52,670,000	$ 52,019,000
Number of troubled debt restructurings | troubled_debt_restructuring			121			114
Number of borrowers | borrower			117			110
Loans and leases receivable, impaired, nonperforming, accrual of interest	31,300,000		$ 31,300,000		$ 31,300,000	$ 29,900,000
Charge off, impaired loan	0	$ 0	$ 1,200,000	$ 0
Weighted average modified interest rate		3.74%		4.01%
Weighted average prior modification rate		3.87%		3.90%
Number of payment defaults for loans modified as TDRs | SecurityLoan			0	1	0		0
Average balance of impaired loans			$ 53,854,000			52,002,000
Team Capital Bank [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of acquired loans								$ 5,200,000
Balance of PCI loans	1,300,000		1,300,000		$ 1,300,000	1,300,000
Impaired Loans Troubled Debt Restructurings [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Allowances for loan losses		$ 0		$ 216,000
With Related Allowance For Loan Losses [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Allowances for loan losses	4,104,000		4,104,000		4,104,000	2,334,000
Loans With No Related Allowance [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Allowances for loan losses	0		0		0	0
Impaired financing receivable with no related allowance	$ 33,670,000		33,670,000		$ 33,670,000
Average balance of impaired loans			$ 34,680,000			26,971,000
Loans With No Related Allowance [Member] | No Allowance For Loan Losses Required [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired financing receivable with no related allowance						$ 31,809,000

Loans Receivable and Allowanc36

Loans Receivable and Allowance for Loan Losses (Schedule of Summarized Loans Receivable) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Servicing Liability at Amortized Cost [Line Items]
Total mortgage loans	$ 4,851,456	$ 4,857,109
Total gross loans	7,032,238	7,004,308
Purchased credit-impaired (PCI) loans	1,266	1,272
Premiums on purchased loans	4,492	4,968
Unearned discounts	(37)	(39)
Net deferred fees	(6,911)	(7,023)
Loans receivable	7,031,048	7,003,486
Residential [Member]
Servicing Liability at Amortized Cost [Line Items]
Total mortgage loans	1,168,557	1,211,672
Commercial [Member]
Servicing Liability at Amortized Cost [Line Items]
Total mortgage loans	1,992,449	1,978,569
Multi-Family [Member]
Servicing Liability at Amortized Cost [Line Items]
Total mortgage loans	1,384,590	1,402,054
Construction [Member]
Servicing Liability at Amortized Cost [Line Items]
Total mortgage loans	305,860	264,814
Commercial Loans [Member]
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	1,687,944	1,630,444
Consumer Loans [Member]
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	$ 492,838	$ 516,755

Loans Receivable and Allowanc37

Loans Receivable and Allowance for Loan Losses (Summary of Aging Loans Receivable by Portfolio Segment and Class) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	$ 38,907	$ 42,401
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	52,654	60,708
Current	6,979,584	6,943,600
Total gross loans	7,032,238	7,004,308
Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	16,089	16,787
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	16,671	18,800
Current	1,671,273	1,611,644
Total gross loans	1,687,944	1,630,444
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	2,448	3,030
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	5,699	6,790
Current	487,139	509,965
Total gross loans	492,838	516,755
Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	20,370	22,584
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	30,284	35,118
Current	4,821,172	4,821,991
Total gross loans	4,851,456	4,857,109
Mortgage Loans [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	9,126	12,021
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	17,508	24,475
Current	1,151,049	1,187,197
Total gross loans	1,168,557	1,211,672
Mortgage Loans [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	8,727	7,493
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	10,259	7,573
Current	1,982,190	1,970,996
Total gross loans	1,992,449	1,978,569
Mortgage Loans [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	0	553
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	0	553
Current	1,384,590	1,401,501
Total gross loans	1,384,590	1,402,054
Mortgage Loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	2,517	2,517
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	2,517	2,517
Current	303,343	262,297
Total gross loans	305,860	264,814
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	7,675	10,108
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	557	1,656
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	1,735	2,561
Financing Receivables, 30 to 59 Days Past Due [Member] | Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	5,383	5,891
Financing Receivables, 30 to 59 Days Past Due [Member] | Mortgage Loans [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	4,861	5,891
Financing Receivables, 30 to 59 Days Past Due [Member] | Mortgage Loans [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	522	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Mortgage Loans [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Mortgage Loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	6,072	8,199
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	25	357
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	1,516	1,199
Financing Receivables, 60 to 89 Days Past Due [Member] | Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	4,531	6,643
Financing Receivables, 60 to 89 Days Past Due [Member] | Mortgage Loans [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	3,521	6,563
Financing Receivables, 60 to 89 Days Past Due [Member] | Mortgage Loans [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	1,010	80
Financing Receivables, 60 to 89 Days Past Due [Member] | Mortgage Loans [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Mortgage Loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	$ 0	$ 0

Loans Receivable and Allowanc38

Loans Receivable and Allowance for Loan Losses (Summary of Loans Receivable by Portfolio Segment and Impairment Method) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	$ 52,670	$ 52,019
Collectively evaluated for impairment	6,979,568	6,952,289
Total gross loans	7,032,238	7,004,308
Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	30,779	29,551
Collectively evaluated for impairment	4,820,677	4,827,558
Total gross loans	4,851,456	4,857,109
Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	19,557	20,255
Collectively evaluated for impairment	1,668,387	1,610,189
Total gross loans	1,687,944	1,630,444
Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	2,334	2,213
Collectively evaluated for impairment	490,504	514,542
Total gross loans	$ 492,838	$ 516,755

Loans Receivable and Allowanc39

Loans Receivable and Allowance for Loan Losses (Summary of Allowance for Loan Losses by Portfolio Segment and Impairment Classification) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	$ 4,104		$ 2,334
Collectively evaluated for impairment	58,758		59,549
Total	62,862	$ 62,155	61,883	$ 60,933	$ 62,191	$ 61,424
Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	1,782		1,986
Collectively evaluated for impairment	27,044		27,640
Total	28,826	29,318	29,626	31,634	30,849	32,094
Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	2,230		268
Collectively evaluated for impairment	28,855		28,875
Total	31,085	29,786	29,143	26,299	28,255	25,829
Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	92		80
Collectively evaluated for impairment	2,859		3,034
Total	$ 2,951	$ 3,051	$ 3,114	$ 3,000	$ 3,087	$ 3,501

Loans Receivable and Allowanc40

Loans Receivable and Allowance for Loan Losses (Schedule of Troubled Debt Restructurings) (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)SecurityLoan	Jun. 30, 2016USD ($)SecurityLoan	Jun. 30, 2017USD ($)SecurityLoan	Jun. 30, 2016USD ($)SecurityLoan
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | SecurityLoan	3	0	9	0
Pre-Modification Outstanding Recorded Investment	$ 1,836	$ 0	$ 4,378	$ 0
Post-Modification Outstanding Recorded Investment	$ 1,796	$ 0	$ 4,246	$ 0
Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | SecurityLoan	3	0	6	0
Pre-Modification Outstanding Recorded Investment	$ 1,836	$ 0	$ 2,838	$ 0
Post-Modification Outstanding Recorded Investment	$ 1,796	$ 0	$ 2,774	$ 0
Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | SecurityLoan	3	0	6	0
Pre-Modification Outstanding Recorded Investment	$ 1,836	$ 0	$ 2,838	$ 0
Post-Modification Outstanding Recorded Investment	$ 1,796	$ 0	$ 2,774	$ 0
Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | SecurityLoan			1	0
Pre-Modification Outstanding Recorded Investment			$ 1,300	$ 0
Post-Modification Outstanding Recorded Investment			$ 1,240	$ 0
Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | SecurityLoan			2	0
Pre-Modification Outstanding Recorded Investment			$ 240	$ 0
Post-Modification Outstanding Recorded Investment			$ 232	$ 0

Loans Receivable and Allowanc41

Loans Receivable and Allowance for Loan Losses (Number of TDR's and Recorded Investment) (Details) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2017USD ($)SecurityLoan	Jun. 30, 2016USD ($)SecurityLoan	Jun. 30, 2017SecurityLoan	Jun. 30, 2016SecurityLoan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	0	1	0	0
Outstanding Recorded Investment | $	$ 0	$ 252
Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	0	1
Outstanding Recorded Investment | $	$ 0	$ 252
Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	0	1
Outstanding Recorded Investment | $	$ 0	$ 252
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	0	0
Outstanding Recorded Investment | $	$ 0	$ 0
Consumer Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	0	0
Outstanding Recorded Investment | $	$ 0	$ 0

Loans Receivable and Allowanc42

Loans Receivable and Allowance for Loan Losses (Change in Accretable Yield) (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]
Beginning balance	$ 503	$ 172	$ 200	$ 676
Accretion	(96)	(419)	(145)	(840)
Reclassification from non-accretable discount	82	244	103	492
Ending balance	$ 158	$ 328	$ 158	$ 328

Loans Receivable and Allowanc43

Loans Receivable and Allowance for Loan Losses (Schedule of Allowance for Loan Losses by Portfolio Segment) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 62,155	$ 62,191	$ 61,883	$ 61,424
Provision charged (credited) to operations	1,700	1,700	3,200	3,200
Recoveries of loans previously charged-off	305	813	993	1,393
Loans charged-off	(1,298)	(3,771)	(3,214)	(5,084)
Balance at end of period	62,862	60,933	62,862	60,933
Mortgage Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	29,318	30,849	29,626	32,094
Provision charged (credited) to operations	(292)	497	(423)	(695)
Recoveries of loans previously charged-off	7	401	61	573
Loans charged-off	(207)	(113)	(438)	(338)
Balance at end of period	28,826	31,634	28,826	31,634
Commercial Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	29,786	28,255	29,143	25,829
Provision charged (credited) to operations	1,777	1,311	3,394	4,269
Recoveries of loans previously charged-off	73	192	531	283
Loans charged-off	(551)	(3,459)	(1,983)	(4,082)
Balance at end of period	31,085	26,299	31,085	26,299
Consumer Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	3,051	3,087	3,114	3,501
Provision charged (credited) to operations	215	(108)	229	(374)
Recoveries of loans previously charged-off	225	220	401	537
Loans charged-off	(540)	(199)	(793)	(664)
Balance at end of period	2,951	3,000	2,951	3,000
Total Portfolio Segments [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	62,155	62,191	61,883	61,424
Provision charged (credited) to operations	1,700	1,700	3,200	3,200
Recoveries of loans previously charged-off	305	813	993	1,393
Loans charged-off	(1,298)	(3,771)	(3,214)	(5,084)
Balance at end of period	62,862	60,933	62,862	60,933
Unallocated [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	0	0	0	0
Provision charged (credited) to operations	0	0	0	0
Recoveries of loans previously charged-off	0	0	0	0
Loans charged-off	0	0	0	0
Balance at end of period	$ 0	$ 0	$ 0	$ 0

Loans Receivable and Allowanc44

Loans Receivable and Allowance for Loan Losses (Summary of Impaired Loans Receivable by Class) (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 60,579	$ 59,053
Recorded Investment	52,670	52,019
Average Recorded Investment	53,854	52,002
Interest Income Recognized	767	1,486
Residential [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	26,343	24,860
Recorded Investment	22,714	21,401
Related Allowance	1,636	1,716
Average Recorded Investment	22,893	21,732
Interest Income Recognized	488	1,003
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	5,676	5,694
Recorded Investment	5,548	5,633
Related Allowance	146	270
Average Recorded Investment	5,566	5,697
Interest Income Recognized	27	95
Construction [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	2,553	2,553
Recorded Investment	2,517	2,517
Related Allowance	0	0
Average Recorded Investment	2,545	2,514
Interest Income Recognized	0	0
Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	34,572	33,107
Recorded Investment	30,779	29,551
Related Allowance	1,782	1,986
Average Recorded Investment	31,004	29,943
Interest Income Recognized	515	1,098
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	23,128	23,211
Recorded Investment	19,557	20,255
Related Allowance	2,230	268
Average Recorded Investment	20,428	19,774
Interest Income Recognized	187	263
Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	2,879	2,735
Recorded Investment	2,334	2,213
Related Allowance	92	80
Average Recorded Investment	2,422	2,285
Interest Income Recognized	65	125
Loans With No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	40,471	38,123
Impaired financing receivable with no related allowance	33,670
Related Allowance	0	0
Average Recorded Investment	34,680	26,971
Interest Income Recognized	418	842
Loans With No Related Allowance [Member] | Residential [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	12,453	10,691
Recorded Investment	9,858	7,881
Related Allowance	0	0
Average Recorded Investment	9,963	8,027
Interest Income Recognized	239	484
Loans With No Related Allowance [Member] | Commercial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	4,600	1,556
Recorded Investment	4,472	1,556
Related Allowance	0	0
Average Recorded Investment	4,472	1,586
Interest Income Recognized	0	40
Loans With No Related Allowance [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	2,553	2,553
Recorded Investment	2,517	2,517
Related Allowance	0	0
Average Recorded Investment	2,545	2,514
Interest Income Recognized	0	0
Loans With No Related Allowance [Member] | Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	19,606	14,800
Recorded Investment	16,847	11,954
Related Allowance	0	0
Average Recorded Investment	16,980	12,127
Interest Income Recognized	239	524
Loans With No Related Allowance [Member] | Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	19,420	21,830
Recorded Investment	15,912	18,874
Related Allowance	0	0
Average Recorded Investment	16,740	13,818
Interest Income Recognized	152	259
Loans With No Related Allowance [Member] | Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,445	1,493
Recorded Investment	911	981
Related Allowance	0	0
Average Recorded Investment	960	1,026
Interest Income Recognized	27	59
Loans With Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	20,108	20,930
Recorded Investment	19,000	20,210
Related Allowance	4,104	2,334
Average Recorded Investment	19,174	25,031
Interest Income Recognized	349	644
Loans With Allowance Recorded [Member] | Residential [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	13,890	14,169
Recorded Investment	12,856	13,520
Related Allowance	1,636	1,716
Average Recorded Investment	12,930	13,705
Interest Income Recognized	249	519
Loans With Allowance Recorded [Member] | Commercial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,076	4,138
Recorded Investment	1,076	4,077
Related Allowance	146	270
Average Recorded Investment	1,094	4,111
Interest Income Recognized	27	55
Loans With Allowance Recorded [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	0	0
Recorded Investment	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Loans With Allowance Recorded [Member] | Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	14,966	18,307
Recorded Investment	13,932	17,597
Related Allowance	1,782	1,986
Average Recorded Investment	14,024	17,816
Interest Income Recognized	276	574
Loans With Allowance Recorded [Member] | Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	3,708	1,381
Recorded Investment	3,645	1,381
Related Allowance	2,230	268
Average Recorded Investment	3,688	5,956
Interest Income Recognized	35	4
Loans With Allowance Recorded [Member] | Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	1,434	1,242
Recorded Investment	1,423	1,232
Related Allowance	92	80
Average Recorded Investment	1,462	1,259
Interest Income Recognized	$ 38	$ 66

Loans Receivable and Allowanc45

Loans Receivable and Allowance for Loan Losses (Summary of Loans Receivable by Credit Quality Risk Rating Indicator) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	$ 4,851,456	$ 4,857,109
Total gross loans	7,032,238	7,004,308
Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	1,168,557	1,211,672
Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	1,992,449	1,978,569
Multi-Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	1,384,590	1,402,054
Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	305,860	264,814
Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	4,851,456	4,857,109
Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,687,944	1,630,444
Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	492,838	516,755
Total classified and criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	128,975	136,834
Total classified and criticized [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	12,646	18,584
Total classified and criticized [Member] | Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	51,155	48,340
Total classified and criticized [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	1,072	1,116
Total classified and criticized [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	2,517	2,517
Total classified and criticized [Member] | Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	67,390	70,557
Total classified and criticized [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	57,621	62,095
Total classified and criticized [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	3,964	4,182
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	50,762	48,537
Special Mention [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	3,521	6,563
Special Mention [Member] | Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	25,567	25,329
Special Mention [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	552	563
Special Mention [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	0	0
Special Mention [Member] | Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	29,640	32,455
Special Mention [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	19,606	14,840
Special Mention [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,516	1,242
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	78,213	88,297
Substandard [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	9,125	12,021
Substandard [Member] | Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	25,588	23,011
Substandard [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	520	553
Substandard [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	2,517	2,517
Substandard [Member] | Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	37,750	38,102
Substandard [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	38,015	47,255
Substandard [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	2,448	2,940
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Doubtful [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	0	0
Doubtful [Member] | Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	0	0
Doubtful [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	0	0
Doubtful [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	0	0
Doubtful [Member] | Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	0	0
Doubtful [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Doubtful [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Loss [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	0	0
Loss [Member] | Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	0	0
Loss [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	0	0
Loss [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	0	0
Loss [Member] | Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	0	0
Loss [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Loss [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	6,903,263	6,867,474
Pass/Watch [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	1,155,911	1,193,088
Pass/Watch [Member] | Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	1,941,294	1,930,229
Pass/Watch [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	1,383,518	1,400,938
Pass/Watch [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	303,343	262,297
Pass/Watch [Member] | Mortgage Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans	4,784,066	4,786,552
Pass/Watch [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,630,323	1,568,349
Pass/Watch [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 488,874	$ 512,573

Deposits (Schedule of Deposits)

Deposits (Schedule of Deposits) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Savings	$ 1,107,051	$ 1,099,020
Money market	1,535,995	1,582,750
NOW	1,853,736	1,871,298
Non-interest bearing	1,353,757	1,349,378
Certificates of deposit	649,998	651,183
Total deposits	$ 6,500,537	$ 6,553,629

Components of Net Periodic Be47

Components of Net Periodic Benefit Cost (Narrative) (Detail) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2006	Dec. 31, 2002
Compensation and Retirement Disclosure [Abstract]
Defined benefit plan age of attainment	21 years
Service period for employees of coverage age, years (at least)	1 year
Defined benefit plan, percentage vested	100.00%
Retiree benefits eliminated if less than service period, years (less than)		10 years	10 years
Defined benefit plan, contributions by employer	$ 0

Components of Net Periodic Be48

Components of Net Periodic Benefit Cost (Net Periodic Benefit Cost (Increase)) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Pension benefits [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	307	312	614	624
Expected return on plan assets	(638)	(612)	(1,276)	(1,224)
Amortization of prior service cost	0	0	0	0
Amortization of the net loss	230	236	460	472
Net periodic (increase) benefit cost	(101)	(64)	(202)	(128)
Other post-retirement benefits [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Service cost	26	37	52	75
Interest cost	218	285	436	569
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Amortization of the net loss	(169)	0	(338)	0
Net periodic (increase) benefit cost	$ 75	$ 322	$ 150	$ 644

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Detail)	6 Months Ended
	Jun. 30, 2017
Minimum [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated costs	5.00%
Maximum [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated costs	10.00%

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities Reported on Consolidated Statements of Financial Condition at Fair Values) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Securities available for sale:
Securities available for sale, at fair value	$ 1,038,968	$ 1,040,386
Derivative liabilities	2,300
Measured on a non-recurring basis:
Foreclosed assets	6,603	7,991
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	48,613	65,745
Derivative assets	0	0
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	990,355	974,641
Derivative assets	7,946	7,441
Derivative liabilities	7,560	6,750
Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Derivative assets	0	0
Derivative liabilities	0	0
US Treasury Obligations [Member]
Securities available for sale:
Securities available for sale, at fair value	5,988	8,008
US Treasury Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	5,988	8,008
US Treasury Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
US Treasury Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Agency Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	42,049	57,188
Agency Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Agency Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Mortgage-Backed Securities [Member]
Securities available for sale:
Securities available for sale, at fair value	965,096	951,861
Mortgage-Backed Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Mortgage-Backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	965,096	951,861
Mortgage-Backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
State And Municipal Obligations [Member]
Securities available for sale:
Securities available for sale, at fair value	3,821	3,743
State And Municipal Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
State And Municipal Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	3,821	3,743
State And Municipal Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Corporate Obligations [Member]
Securities available for sale:
Securities available for sale, at fair value	21,438	19,037
Corporate Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Corporate Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	21,438	19,037
Corporate Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Equity Securities [Member]
Securities available for sale:
Securities available for sale, at fair value	576	549
Equity Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	576	549
Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Recurring Basis [Member]
Securities available for sale:
Securities available for sale, at fair value	1,038,968	1,040,386
Derivative assets	7,946	7,441
Total assets at fair value	1,046,914	1,047,827
Derivative liabilities	7,560	6,750
Measured on a Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	48,613	65,745
Derivative assets	0	0
Total assets at fair value	48,613	65,745
Derivative liabilities	0	0
Measured on a Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	990,355	974,641
Derivative assets	7,946	7,441
Total assets at fair value	998,301	982,082
Derivative liabilities	7,560	6,750
Measured on a Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Derivative assets	0	0
Total assets at fair value	0	0
Derivative liabilities	0	0
Measured on a Recurring Basis [Member] | US Treasury Obligations [Member]
Securities available for sale:
Securities available for sale, at fair value	5,988	8,008
Measured on a Recurring Basis [Member] | US Treasury Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	5,988	8,008
Measured on a Recurring Basis [Member] | US Treasury Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Recurring Basis [Member] | US Treasury Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Recurring Basis [Member] | Agency Obligations [Member]
Securities available for sale:
Securities available for sale, at fair value	42,049	57,188
Measured on a Recurring Basis [Member] | Agency Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	42,049	57,188
Measured on a Recurring Basis [Member] | Agency Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Recurring Basis [Member] | Agency Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Recurring Basis [Member] | Mortgage-Backed Securities [Member]
Securities available for sale:
Securities available for sale, at fair value	965,096	951,861
Measured on a Recurring Basis [Member] | Mortgage-Backed Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Recurring Basis [Member] | Mortgage-Backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	965,096	951,861
Measured on a Recurring Basis [Member] | Mortgage-Backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Recurring Basis [Member] | State And Municipal Obligations [Member]
Securities available for sale:
Securities available for sale, at fair value	3,821	3,743
Measured on a Recurring Basis [Member] | State And Municipal Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Recurring Basis [Member] | State And Municipal Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	3,821	3,743
Measured on a Recurring Basis [Member] | State And Municipal Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Recurring Basis [Member] | Corporate Obligations [Member]
Securities available for sale:
Securities available for sale, at fair value	21,438	19,037
Measured on a Recurring Basis [Member] | Corporate Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Recurring Basis [Member] | Corporate Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	21,438	19,037
Measured on a Recurring Basis [Member] | Corporate Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Recurring Basis [Member] | Equity Securities [Member]
Securities available for sale:
Securities available for sale, at fair value	576	549
Measured on a Recurring Basis [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available for sale:
Securities available for sale, at fair value	576	549
Measured on a Recurring Basis [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Recurring Basis [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities available for sale:
Securities available for sale, at fair value	0	0
Measured on a Non-Recurring Basis [Member]
Measured on a non-recurring basis:
Loans measured for impairment based on the fair value of the underlying collateral	6,890	11,001
Fair value, Measured on a non-recurring basis	13,493	18,992
Measured on a Non-Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Measured on a non-recurring basis:
Loans measured for impairment based on the fair value of the underlying collateral	0	0
Foreclosed assets	0	0
Fair value, Measured on a non-recurring basis	0	0
Measured on a Non-Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Measured on a non-recurring basis:
Loans measured for impairment based on the fair value of the underlying collateral	0	0
Foreclosed assets	0	0
Fair value, Measured on a non-recurring basis	0	0
Measured on a Non-Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member]
Measured on a non-recurring basis:
Loans measured for impairment based on the fair value of the underlying collateral	6,890	11,001
Foreclosed assets	6,603	7,991
Fair value, Measured on a non-recurring basis	$ 13,493	$ 18,992

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule of Financial Instruments at Carrying and Fair Values) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Financial assets:
Cash and cash equivalents	$ 153,402	$ 144,297	$ 117,527	$ 102,226
Securities available for sale, at fair value	1,038,968	1,040,386
Investment securities held to maturity:
Investment securities held to maturity, fair value	501,338	489,287
FHLBNY stock	78,949	75,726
Loans, net of allowance for loan losses	6,968,186	6,941,603
Financial liabilities:
Certificates of deposit	649,998	651,183
Total deposits	6,500,537	6,553,629
Borrowings	1,676,219	1,612,745
Derivative liabilities	2,300
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Cash and cash equivalents	153,402	144,297
Securities available for sale, at fair value	48,613	65,745
Investment securities held to maturity:
Investment securities held to maturity, fair value	4,250	4,225
FHLBNY stock	78,949	75,726
Loans, net of allowance for loan losses	0	0
Derivative assets	0	0
Financial liabilities:
Deposits other than certificates of deposits	5,850,539	5,902,446
Certificates of deposit	0	0
Total deposits	5,850,539	5,902,446
Borrowings	0	0
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Cash and cash equivalents	0	0
Securities available for sale, at fair value	990,355	974,641
Investment securities held to maturity:
Investment securities held to maturity, fair value	497,088	485,062
FHLBNY stock	0	0
Loans, net of allowance for loan losses	0	0
Derivative assets	7,946	7,441
Financial liabilities:
Deposits other than certificates of deposits	0	0
Certificates of deposit	650,663	653,772
Total deposits	650,663	653,772
Borrowings	1,677,676	1,617,023
Derivative liabilities	7,560	6,750
Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Cash and cash equivalents	0	0
Securities available for sale, at fair value	0	0
Investment securities held to maturity:
Investment securities held to maturity, fair value	0	0
FHLBNY stock	0	0
Loans, net of allowance for loan losses	6,961,290	6,924,440
Derivative assets	0	0
Financial liabilities:
Deposits other than certificates of deposits	0	0
Certificates of deposit	0	0
Total deposits	0	0
Borrowings	0	0
Derivative liabilities	0	0
Carrying Value [Member]
Financial assets:
Cash and cash equivalents	153,402	144,297
Securities available for sale, at fair value	1,038,968	1,040,386
Investment securities held to maturity:
Investment securities held to maturity, fair value	492,737	488,183
FHLBNY stock	78,949	75,726
Loans, net of allowance for loan losses	6,968,186	6,941,603
Derivative assets	7,946	7,441
Financial liabilities:
Deposits other than certificates of deposits	5,850,539	5,902,446
Certificates of deposit	649,998	651,183
Total deposits	6,500,537	6,553,629
Borrowings	1,676,219	1,612,745
Derivative liabilities	7,560	6,750
Fair Value [Member]
Financial assets:
Cash and cash equivalents	153,402	144,297
Securities available for sale, at fair value	1,038,968	1,040,386
Investment securities held to maturity:
Investment securities held to maturity, fair value	501,338	489,287
FHLBNY stock	78,949	75,726
Loans, net of allowance for loan losses	6,961,290	6,924,440
Derivative assets	7,946	7,441
Financial liabilities:
Deposits other than certificates of deposits	5,850,539	5,902,446
Certificates of deposit	650,663	653,772
Total deposits	6,501,202	6,556,218
Borrowings	1,677,676	1,617,023
Derivative liabilities	7,560	6,750
US Treasury Obligations [Member]
Financial assets:
Securities available for sale, at fair value	5,988	8,008
US Treasury Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Securities available for sale, at fair value	5,988	8,008
US Treasury Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Securities available for sale, at fair value	0	0
US Treasury Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Securities available for sale, at fair value	0	0
US Treasury Obligations [Member] | Carrying Value [Member]
Financial assets:
Securities available for sale, at fair value	5,988	8,008
US Treasury Obligations [Member] | Fair Value [Member]
Financial assets:
Securities available for sale, at fair value	5,988	8,008
Agency Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Securities available for sale, at fair value	42,049	57,188
Investment securities held to maturity:
Investment securities held to maturity, fair value	4,250	4,225
Agency Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Securities available for sale, at fair value	0	0
Investment securities held to maturity:
Investment securities held to maturity, fair value	0	0
Agency Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Securities available for sale, at fair value	0	0
Investment securities held to maturity:
Investment securities held to maturity, fair value	0	0
Agency Obligations [Member] | Carrying Value [Member]
Financial assets:
Securities available for sale, at fair value	42,049	57,188
Investment securities held to maturity:
Investment securities held to maturity, fair value	4,306	4,306
Agency Obligations [Member] | Fair Value [Member]
Financial assets:
Securities available for sale, at fair value	42,049	57,188
Investment securities held to maturity:
Investment securities held to maturity, fair value	4,250	4,225
Mortgage-Backed Securities [Member]
Financial assets:
Securities available for sale, at fair value	965,096	951,861
Investment securities held to maturity:
Investment securities held to maturity, fair value	599	924
Mortgage-Backed Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Securities available for sale, at fair value	0	0
Investment securities held to maturity:
Investment securities held to maturity, fair value	0	0
Mortgage-Backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Securities available for sale, at fair value	965,096	951,861
Investment securities held to maturity:
Investment securities held to maturity, fair value	599	924
Mortgage-Backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Securities available for sale, at fair value	0	0
Investment securities held to maturity:
Investment securities held to maturity, fair value	0	0
Mortgage-Backed Securities [Member] | Carrying Value [Member]
Financial assets:
Securities available for sale, at fair value	965,096	951,861
Investment securities held to maturity:
Investment securities held to maturity, fair value	579	893
Mortgage-Backed Securities [Member] | Fair Value [Member]
Financial assets:
Securities available for sale, at fair value	965,096	951,861
Investment securities held to maturity:
Investment securities held to maturity, fair value	599	924
State And Municipal Obligations [Member]
Financial assets:
Securities available for sale, at fair value	3,821	3,743
Investment securities held to maturity:
Investment securities held to maturity, fair value	487,228	474,852
State And Municipal Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Securities available for sale, at fair value	0	0
Investment securities held to maturity:
Investment securities held to maturity, fair value	0	0
State And Municipal Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Securities available for sale, at fair value	3,821	3,743
Investment securities held to maturity:
Investment securities held to maturity, fair value	487,228	474,852
State And Municipal Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Securities available for sale, at fair value	0	0
Investment securities held to maturity:
Investment securities held to maturity, fair value	0	0
State And Municipal Obligations [Member] | Carrying Value [Member]
Financial assets:
Securities available for sale, at fair value	3,821	3,743
Investment securities held to maturity:
Investment securities held to maturity, fair value	478,564	473,653
State And Municipal Obligations [Member] | Fair Value [Member]
Financial assets:
Securities available for sale, at fair value	3,821	3,743
Investment securities held to maturity:
Investment securities held to maturity, fair value	487,228	474,852
Corporate Obligations [Member]
Financial assets:
Securities available for sale, at fair value	21,438	19,037
Investment securities held to maturity:
Investment securities held to maturity, fair value	9,261	9,286
Corporate Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Securities available for sale, at fair value	0	0
Investment securities held to maturity:
Investment securities held to maturity, fair value	0	0
Corporate Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Securities available for sale, at fair value	21,438	19,037
Investment securities held to maturity:
Investment securities held to maturity, fair value	9,261	9,286
Corporate Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Securities available for sale, at fair value	0	0
Investment securities held to maturity:
Investment securities held to maturity, fair value	0	0
Corporate Obligations [Member] | Carrying Value [Member]
Financial assets:
Securities available for sale, at fair value	21,438	19,037
Investment securities held to maturity:
Investment securities held to maturity, fair value	9,288	9,331
Corporate Obligations [Member] | Fair Value [Member]
Financial assets:
Securities available for sale, at fair value	21,438	19,037
Investment securities held to maturity:
Investment securities held to maturity, fair value	9,261	9,286
Equity Securities [Member]
Financial assets:
Securities available for sale, at fair value	576	549
Equity Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Securities available for sale, at fair value	576	549
Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Securities available for sale, at fair value	0	0
Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Securities available for sale, at fair value	0	0
Equity Securities [Member] | Carrying Value [Member]
Financial assets:
Securities available for sale, at fair value	576	549
Equity Securities [Member] | Fair Value [Member]
Financial assets:
Securities available for sale, at fair value	$ 576	$ 549

Other Comprehensive Income (Com

Other Comprehensive Income (Components of Other Comprehensive Income (Loss)) (Detail) - 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) [Line Items]
Total other comprehensive (loss) income, before tax	$ 2,104	$ 4,928	$ 3,537	$ 16,149
Total other comprehensive income (loss), tax effect	(842)	(1,979)	(1,417)	(6,485)
Reclassification adjustment for losses (gains) included in net income, after tax	(37)	(140)
Total other comprehensive income	1,262	2,949	2,120	9,664
Unrealized gains on securities available for sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net (losses) gains arising during the period, before tax	2,048	4,978	3,336	16,833
Reclassification adjustment for losses (gains) included in net income, before tax	0	0	0	(95)
Total other comprehensive (loss) income, before tax	2,048	4,978	3,336	16,738
Net (losses) gains arising during the period, tax effect	(820)	(1,999)	(1,337)	(6,760)
Reclassification adjustment for losses (gains) included in net income, tax effect	0	0	0	38
Total other comprehensive income (loss), tax effect	(820)	(1,999)	(1,337)	(6,722)
Net (losses) gains arising during the period, after tax	1,228	2,979	1,999	10,073
Reclassification adjustment for losses (gains) included in net income, after tax	0	0	0	(57)
Total other comprehensive income	1,228	2,979	1,999	10,016
Unrealized losses on derivatives (cash flow hedges) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive (loss) income, before tax	(5)	(284)	87	(988)
Total other comprehensive income (loss), tax effect	2	114	(35)	397
Total other comprehensive income	(3)	(170)	52	(591)
Post-retirement obligations [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive (loss) income, before tax	61	234	114	399
Total other comprehensive income (loss), tax effect	(24)	(94)	(45)	(160)
Total other comprehensive income	$ 37	$ 140	$ 69	$ 239

Other Comprehensive Income (C53

Other Comprehensive Income (Components of Accumulated Other Comprehensive Income, Net of Tax) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 1,251,781	$ 1,196,065
Current period other comprehensive income (loss)	$ 1,262	$ 2,949	2,120	9,664
Ending Balance	1,283,601	1,229,563	1,283,601	1,229,563
Unrealized gains on securities available for sale [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	261	10,988	(510)	3,951
Current period other comprehensive income (loss)	1,228	2,979	1,999	10,016
Ending Balance	1,489	13,967	1,489	13,967
Post-retirement obligations [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3,024)	(6,325)	(3,056)	(6,424)
Current period other comprehensive income (loss)	37	140	69	239
Ending Balance	(2,987)	(6,185)	(2,987)	(6,185)
Unrealized losses on derivatives (cash flow hedges) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	224	(494)	169	(73)
Current period other comprehensive income (loss)	(3)	(170)	52	(591)
Ending Balance	221	(664)	221	(664)
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(2,539)	4,169	(3,397)	(2,546)
Current period other comprehensive income (loss)			2,120	9,664
Ending Balance	$ (1,277)	$ 7,118	$ (1,277)	$ 7,118

Other Comprehensive Income (Rec

Other Comprehensive Income (Reclassifications Out of Accumulated Other Comprehensive Income) (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) [Line Items]
Income tax expense	$ (10,451)	$ (8,781)	$ (18,819)	$ (17,517)
Net income	24,383	21,356	47,891	42,329
Net of tax	37	140
Unrealized gains on securities available for sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Compensation and employee benefits, amortization of actuarial losses (gains)	0	0	0	95
Income tax expense	0	0	0	(38)
Net of tax	0	0	0	57
Post-retirement obligations [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Compensation and employee benefits, amortization of actuarial losses (gains)	61	236
Income tax expense	(24)	(96)
Net of tax	37	140
Reclassification adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net of tax			74	339
Reclassification adjustment [Member] | Unrealized gains on securities available for sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net gain on securities transactions	0	0	0	95
Income tax expense	0	0	0	(38)
Net income	$ 0	$ 0	0	57
Reclassification adjustment [Member] | Post-retirement obligations [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Compensation and employee benefits, amortization of actuarial losses (gains)			122	472
Income tax expense			(48)	(190)
Net of tax			$ 74	$ 282

Derivatives and Hedging Activ55

Derivatives and Hedging Activities (Narrative) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)instrument	Dec. 31, 2016USD ($)instrument
Derivative [Line Items]
Derivative instruments in accumulated other comprehensive income reclassified to interest expense	$ 126
Derivative liability, notional amount	60,000
Derivative liabilities	2,300
Collateral against obligations	$ 3,800
Derivatives Not Designated as a Hedging Instruments [Member] | Interest rate products [Member]
Derivative [Line Items]
Number of derivative instruments held (in instrument) | instrument	42	36
Derivative notional amount	$ 637,000	$ 582,200
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Number of outstanding derivatives | instrument	2

Derivatives and Hedging Activ56

Derivatives and Hedging Activities (Fair Value of Derivatives) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Derivatives Not Designated as a Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 7,577	$ 7,159
Liability Derivatives	7,560	6,750
Derivatives Not Designated as a Hedging Instruments [Member] | Other Assets [Member] | Interest rate products [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	7,575	7,156
Derivatives Not Designated as a Hedging Instruments [Member] | Other Assets [Member] | Credit contracts [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	2	3
Derivatives Not Designated as a Hedging Instruments [Member] | Other Liabilities [Member] | Interest rate products [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	7,560	6,750
Derivatives Not Designated as a Hedging Instruments [Member] | Other Liabilities [Member] | Credit contracts [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	0	0
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	369	282
Liability Derivatives	0	0
Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest rate products [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	369	282
Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest rate products [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 0	$ 0

Derivatives and Hedging Activ57

Derivatives and Hedging Activities (Gains and Losses on Derivatives) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivatives Not Designated as a Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives for the three months ended	$ (166)	$ (431)	$ (391)	$ (867)
Derivatives Not Designated as a Hedging Instruments [Member] | Other income (expense) [Member] | Interest rate products [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives for the three months ended	(166)	(425)	(392)	(965)
Derivatives Not Designated as a Hedging Instruments [Member] | Other income (expense) [Member] | Credit contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives for the three months ended	0	(6)	1	98
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives for the three months ended	(51)	(92)	(108)	(238)
Designated as Hedging Instrument [Member] | Other income (expense) [Member] | Interest rate products [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives for the three months ended	$ (51)	$ (92)	$ (108)	$ (238)