Provident Financial Services (PFS) 10-Q 9 Aug 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 01, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
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		67,090,176

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 91,192	$ 139,557
Short-term investments	50,761	51,277
Total cash and cash equivalents	141,953	190,834
Available for sale debt securities, at fair value	1,052,534	1,037,154
Held to maturity debt securities (fair value of $472,185 at June 30, 2018 (unaudited) and $485,039 at December 31, 2017)	473,825	477,652
Equity securities, at fair value	687	658
Federal Home Loan Bank stock	76,772	81,184
Loans	7,253,242	7,325,718
Less allowance for loan losses	58,819	60,195
Net loans	7,194,423	7,265,523
Foreclosed assets, net	6,537	6,864
Banking premises and equipment, net	60,348	63,185
Accrued interest receivable	29,735	29,646
Intangible assets	419,180	420,290
Bank-owned life insurance	192,082	189,525
Other assets	84,836	82,759
Total assets	9,732,912	9,845,274
Deposits:
Demand deposits	4,953,994	4,996,345
Savings deposits	1,070,397	1,083,012
Certificates of deposit of $100,000 or more	325,653	316,074
Other time deposits	323,905	318,735
Total deposits	6,673,949	6,714,166
Mortgage escrow deposits	30,106	25,933
Borrowed funds	1,641,539	1,742,514
Other liabilities	76,056	64,000
Total liabilities	8,421,650	8,546,613
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 66,780,853 shares outstanding at June 30, 2018 and 66,535,017 outstanding at December 31, 2017	832	832
Additional paid-in capital	1,017,256	1,012,908
Retained earnings	606,423	586,132
Accumulated other comprehensive loss	(19,912)	(7,465)
Treasury stock	(260,908)	(259,907)
Unallocated common stock held by the Employee Stock Ownership Plan	(32,429)	(33,839)
Common stock acquired by the Directors’ Deferred Fee Plan	(4,840)	(5,175)
Deferred compensation – Directors’ Deferred Fee Plan	4,840	5,175
Total stockholders’ equity	1,311,262	1,298,661
Total liabilities and stockholders’ equity	$ 9,732,912	$ 9,845,274

Consolidated Statements of Fin3

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Investment securities held to maturity, fair value	$ 472,185	$ 485,039
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)	66,780,853	66,535,017

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest income:
Real estate secured loans	$ 52,756	$ 47,009	$ 104,266	$ 93,020
Commercial loans	19,350	18,100	38,476	34,920
Consumer loans	4,945	5,196	9,850	10,210
Available for sale debt securities, equity securities and Federal Home Loan Bank Stock	7,682	6,548	14,933	13,111
Held to maturity debt securities	3,154	3,292	6,298	6,540
Deposits, Federal funds sold and other short-term investments	428	298	823	555
Total interest income	88,315	80,443	174,646	158,356
Interest expense:
Deposits	6,996	4,653	13,231	9,105
Borrowed funds	7,039	6,735	13,858	13,161
Total interest expense	14,035	11,388	27,089	22,266
Net interest income	74,280	69,055	147,557	136,090
Provision for loan losses	15,500	1,700	20,900	3,200
Net interest income after provision for loan losses	58,780	67,355	126,657	132,890
Non-interest income:
Fees	6,612	7,255	13,251	13,260
Wealth management income	4,602	4,509	9,002	8,722
Bank-owned life insurance	1,293	2,549	2,557	3,938
Net gain on securities transactions	0	11	1	11
Other income	1,330	495	2,333	1,353
Total non-interest income	13,837	14,819	27,144	27,284
Non-interest expense:
Compensation and employee benefits	27,983	26,910	55,852	53,758
Net occupancy expense	6,383	6,195	13,128	13,150
Data processing expense	3,626	3,531	7,232	6,988
FDIC insurance	900	999	1,953	2,098
Amortization of intangibles	546	695	1,116	1,447
Advertising and promotion expense	847	945	1,814	1,802
Other operating expenses	8,521	8,065	14,621	14,221
Total non-interest expense	48,806	47,340	95,716	93,464
Income before income tax expense	23,811	34,834	58,085	66,710
Income tax expense	4,568	10,451	10,929	18,819
Net income	$ 19,243	$ 24,383	$ 47,156	$ 47,891
Basic earnings per share (usd per share)	$ 0.30	$ 0.38	$ 0.73	$ 0.75
Weighted average basic shares outstanding (in shares)	64,911,919	64,357,684	64,840,843	64,263,065
Diluted earnings per share (usd per share)	$ 0.30	$ 0.38	$ 0.73	$ 0.74
Weighted average diluted shares outstanding (in shares)	65,099,603	64,541,071	65,024,917	64,455,873

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 19,243	$ 24,383	$ 47,156	$ 47,891
Unrealized gains and losses on securities available for sale:
Net unrealized (losses) gains arising during the period	(3,438)	1,228	(13,077)	1,999
Reclassification adjustment for gains included in net income	0	0	0	0
Total	(3,438)	1,228	(13,077)	1,999
Unrealized gains (losses) on derivatives	148	(3)	678	52
Amortization related to post-retirement obligations	74	37	136	69
Total other comprehensive (loss) income	(3,216)	1,262	(12,263)	2,120
Total comprehensive income	$ 16,027	$ 25,645	$ 34,893	$ 50,011

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 (Loss) Income [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, 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			47,891
Other comprehensive income (loss), net of tax	2,120				2,120
Cash dividends paid	(25,309)			(25,309)
Effect of adopting Accounting Standards Update (ASU) No. 2016-01					0
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 (loss), net of tax	1,262				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
Beginning balance at Dec. 31, 2017	1,298,661	832	1,012,908	586,132	(7,465)	(259,907)	(33,839)	(5,175)	5,175
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	47,156			47,156
Other comprehensive income (loss), net of tax	(12,263)				(12,263)
Cash dividends paid	(27,049)			(27,049)
Effect of adopting Accounting Standards Update (ASU) No. 2016-01	0			184	(184)
Distributions from DDFP	81		81					335	(335)
Purchases of treasury stock	0					0
Purchase of employee restricted shares to fund statutory tax withholding	(1,847)					(1,847)
Shares issued dividend reinvestment plan	859		305			554
Stock option exercises	207		(85)			292
Allocation of ESOP shares	2,205		795				1,410
Allocation of SAP shares	3,159		3,159
Allocation of stock options	93		93
Ending Balance at Jun. 30, 2018	1,311,262	832	1,017,256	606,423	(19,912)	(260,908)	(32,429)	(4,840)	4,840
Beginning balance at Mar. 31, 2018					(16,696)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	19,243
Other comprehensive income (loss), net of tax	(3,216)				(3,216)
Ending Balance at Jun. 30, 2018	$ 1,311,262	$ 832	$ 1,017,256	$ 606,423	$ (19,912)	$ (260,908)	$ (32,429)	$ (4,840)	$ 4,840

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 47,156	$ 47,891
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of intangibles	5,092	5,971
Provision for loan losses	20,900	3,200
Deferred tax expense	(22,111)	840
Income on Bank-owned life insurance	(2,557)	(3,938)
Net amortization of premiums and discounts on securities	4,458	4,911
Accretion of net deferred loan fees	(2,404)	(2,422)
Amortization of premiums on purchased loans, net	405	516
Net increase in loans originated for sale	(4,545)	(13,752)
Proceeds from sales of loans originated for sale	5,111	0
Proceeds from sales and paydowns of foreclosed assets	2,063	3,540
ESOP expense	2,205	2,120
Allocation of stock award shares	3,159	2,514
Allocation of stock options	93	97
Net gain on sale of loans	(566)	(348)
Net gain on securities transactions	(1)	(11)
Net gain on sale of premises and equipment	(25)	0
Net gain on sale of foreclosed assets	(559)	(501)
Decrease (increase) in accrued interest receivable	89	(8)
Decrease (increase) in other assets	3,223	(3,723)
Increase (decrease) in other liabilities	12,056	(6,674)
Net cash provided by operating activities	73,242	40,223
Cash flows from investing activities:
Proceeds from maturities, calls and paydowns of held to maturity debt securities	24,997	25,638
Purchases of held to maturity debt securities	(22,470)	(31,572)
Proceeds from maturities, calls and paydowns of available for sale debt securities	101,691	100,502
Purchases of available for sale debt securities	(138,020)	(99,268)
Proceeds from redemption of Federal Home Loan Bank stock	75,655	57,658
Purchases of Federal Home Loan Bank stock	(71,243)	(60,881)
Purchases of loans	(1,344)	0
Net decrease (increase) in loans	74,574	(13,922)
Proceeds from sales of premises and equipment	25	0
Purchases of premises and equipment	(1,139)	(1,108)
Net cash provided by (used in) investing activities	42,726	(22,953)
Cash flows from financing activities:
Net decrease in deposits	(40,217)	(53,092)
Increase in mortgage escrow deposits	4,173	4,489
Cash dividends paid to stockholders	(27,049)	(25,309)
Shares issued through the dividend reinvestment plan	859	910
Purchases of treasury stock	0	(443)
Purchase of employee restricted shares to fund statutory tax withholding	(1,847)	(709)
Stock options exercised	207	2,515
Proceeds from long-term borrowings	525,000	171,980
Payments on long-term borrowings	(410,834)	(202,019)
Net (decrease) increase in short-term borrowings	(215,141)	93,513
Net cash used in financing activities	(164,849)	(8,165)
Net (decrease) increase in cash and cash equivalents	(48,881)	9,105
Cash and cash equivalents at beginning of period	190,834	144,297
Cash and cash equivalents at end of period	141,953	153,402
Cash paid during the period for:
Interest on deposits and borrowings	26,925	22,422
Income taxes	4,128	15,491
Non-cash investing activities:
Transfer of loans receivable to foreclosed assets	$ 1,245	$ 2,019

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2018
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, 2018 are not necessarily indicative of the results of operations that may be expected for all of 2018 . 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, 2017 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, 2018 and 2017 (dollars in thousands, except per share amounts): Three months ended June 30, 2018 2017 Net Income Weighted Average Common Shares Outstanding Per Share Amount Net Income Weighted Average Common Shares Outstanding Per Share Amount Net income $ 19,243 $ 24,383 Basic earnings per share: Income available to common stockholders $ 19,243 64,911,919 $ 0.30 $ 24,383 64,357,684 $ 0.38 Dilutive shares 187,684 183,387 Diluted earnings per share: Income available to common stockholders $ 19,243 65,099,603 $ 0.30 $ 24,383 64,541,071 $ 0.38 Six months ended June 30, 2018 2017 Net Income Weighted Average Common Shares Outstanding Per Share Amount Net Income Weighted Average Common Shares Outstanding Per Share Amount Net income $ 47,156 $ 47,891 Basic earnings per share: Income available to common stockholders $ 47,156 64,840,843 $ 0.73 $ 47,891 64,263,065 $ 0.75 Dilutive shares 184,074 192,808 Diluted earnings per share: Income available to common stockholders $ 47,156 65,024,917 $ 0.73 $ 47,891 64,455,873 $ 0.74 Antidilutive stock options and awards at June 30, 2018 and 2017 , totaling 420,544 shares and 437,904 shares, respectively, were excluded from the earnings per share calculations.

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities At June 30, 2018 , the Company had $1.05 billion and $473.8 million in available for sale debt securities and held to maturity debt 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") in future periods. The total number of available for sale and held to maturity debt securities in an unrealized loss position as of June 30, 2018 , totaled 595 , compared with 306 at December 31, 2017 . All securities with unrealized losses at June 30, 2018 were analyzed for OTTI. Based upon this analysis, the Company believes that as of June 30, 2018 , such securities with unrealized losses do not represent impairments that are other-than-temporary. Available for Sale Debt Securities The following tables present the amortized cost, gross unrealized gains, gross unrealized losses and the fair value for available for sale debt securities at June 30, 2018 and December 31, 2017 (in thousands): June 30, 2018 Amortized Gross Gross Fair Agency obligations 5,003 — (4 ) 4,999 Mortgage-backed securities 1,041,736 1,932 (24,542 ) 1,019,126 State and municipal obligations 3,237 81 — 3,318 Corporate obligations 25,043 200 (152 ) 25,091 $ 1,075,019 2,213 (24,698 ) 1,052,534 December 31, 2017 Amortized Gross Gross Fair Agency obligations 19,014 — (9 ) 19,005 Mortgage-backed securities 993,548 4,914 (10,095 ) 988,367 State and municipal obligations 3,259 129 — 3,388 Corporate obligations 26,047 359 (12 ) 26,394 $ 1,041,868 5,402 (10,116 ) 1,037,154 The amortized cost and fair value of available for sale debt securities at June 30, 2018 , 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, 2018 Amortized cost Fair value Due in one year or less $ — — Due after one year through five years 8,400 8,338 Due after five years through ten years 24,883 25,070 Due after ten years — — $ 33,283 33,408 Mortgage-backed securities totaling $1.04 billion at amortized cost and $1.02 billion 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. For the three and six months ended June 30, 2018 , no securities were sold or called from the available for sale debt securities portfolio. For the three and six months ended June 30, 2017 , no securities were sold or called from the available for sale debt securities portfolio. The following tables present the fair value and gross unrealized losses for available for sale debt securities with temporary impairment at June 30, 2018 and December 31, 2017 (in thousands): June 30, 2018 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 4,999 (4 ) — — 4,999 (4 ) Mortgage-backed securities 684,255 (14,301 ) 221,953 (10,241 ) 906,208 (24,542 ) Corporate obligations 7,855 (152 ) — — 7,855 (152 ) $ 697,109 (14,457 ) 221,953 (10,241 ) 919,062 (24,698 ) December 31, 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 $ 12,006 (8 ) 6,999 (1 ) 19,005 (9 ) Mortgage-backed securities 420,746 (3,936 ) 235,056 (6,159 ) 655,802 (10,095 ) Corporate obligations — — 989 (12 ) 989 (12 ) $ 432,752 (3,944 ) 243,044 (6,172 ) 675,796 (10,116 ) The number of available for sale debt securities in an unrealized loss position at June 30, 2018 totaled 192 , compared with 122 at December 31, 2017 . The increase in the number of securities in an unrealized loss position at June 30, 2018, was due to higher current market interest rates compared to rates at December 31, 2017 . All temporarily impaired securities were investment grade at June 30, 2018. At June 30, 2018 , there were two private label mortgage-backed securities in an unrealized loss position, with an amortized cost of $39,000 and an unrealized loss of $1,000 . These private label mortgage-backed securities were investment grade at June 30, 2018 . The Company estimates the loss projections for each non-agency mortgage-backed 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 other-than-temporary impairment existed during the six months ended June 30, 2018 . Based on its detailed review of the available for sale debt securities portfolio, the Company believes that as of June 30, 2018 , securities with unrealized loss positions shown above do not represent impairments that are other-than-temporary. The Company does not have the intent to sell securities in a temporary loss position at June 30, 2018 , nor is it more likely than not that the Company will be required to sell the securities before the anticipated recovery. Held to Maturity Debt Securities The following tables present the amortized cost, gross unrealized gains, gross unrealized losses and the estimated fair value for held to maturity debt securities at June 30, 2018 and December 31, 2017 (in thousands): June 30, 2018 Amortized cost Gross unrealized gains Gross unrealized losses Fair value Agency obligations $ 4,987 — (143 ) 4,844 Mortgage-backed securities 248 8 — 256 State and municipal obligations 458,624 4,074 (5,373 ) 457,325 Corporate obligations 9,966 1 (207 ) 9,760 $ 473,825 4,083 (5,723 ) 472,185 December 31, 2017 Amortized cost Gross unrealized gains Gross unrealized losses Fair value Agency obligations $ 4,308 — (87 ) 4,221 Mortgage-backed securities 382 14 — 396 State and municipal obligations 462,942 9,280 (1,738 ) 470,484 Corporate obligations 10,020 1 (83 ) 9,938 $ 477,652 9,295 (1,908 ) 485,039 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 debt securities portfolio for the three and six months ended June 30, 2018 and 2017 . For the three and six months ended June 30, 2018 , proceeds from calls on securities in the held to maturity debt securities portfolio totaled $195,000 and $20.5 million , respectively. There were no gross gains on calls for the three months ended June 30, 2018 and $1,000 for the six months ended June 30, 2018 , and no gross losses in both the three and six month periods. For the three and six months ended June 30, 2017 , proceeds from calls of securities in the held to maturity debt securities 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. The amortized cost and fair value of investment securities in the held to maturity debt securities portfolio at June 30, 2018 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, 2018 Amortized cost Fair value Due in one year or less $ 5,143 5,165 Due after one year through five years 75,121 75,177 Due after five years through ten years 261,417 260,745 Due after ten years 131,896 130,842 $ 473,577 471,929 Mortgage-backed securities totaling $248,000 at amortized cost and $256,000 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 present the fair value and gross unrealized losses for held to maturity debt securities with temporary impairment at June 30, 2018 and December 31, 2017 (in thousands): June 30, 2018 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 $ 4,475 (143 ) — — 4,475 (143 ) State and municipal obligations 168,467 (2,667 ) 48,054 (2,706 ) 216,521 (5,373 ) Corporate obligations 8,984 (207 ) — — 8,984 (207 ) $ 181,926 (3,017 ) 48,054 (2,706 ) 229,980 (5,723 ) December 31, 2017 Unrealized Losses Less than 12 months 12 months or longer Total Fair Gross Fair Gross Fair Gross Agency obligations $ 3,821 (87 ) — — 3,821 (87 ) State and municipal obligations 37,317 (295 ) 49,488 (1,443 ) 86,805 (1,738 ) Corporate obligations 9,662 (83 ) — — 9,662 (83 ) $ 50,800 (465 ) 49,488 (1,443 ) 100,288 (1,908 ) The Company estimates the loss projections for each non-agency mortgage-backed 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 other-than-temporary impairment existed during the three months ended June 30, 2018 . Based on its detailed review of the held to maturity debt securities portfolio, the Company believes that as of June 30, 2018 , securities with unrealized loss positions shown above do not represent impairments that are other-than-temporary. The Company does not have the intent to sell securities in a temporary loss position at June 30, 2018 , nor is it more likely than not that the Company will be required to sell the securities before the anticipated recovery. The number of held to maturity debt securities in an unrealized loss position at June 30, 2018 totaled 403 , compared with 184 at December 31, 2017 . The increase in the number of securities in an unrealized loss position at June 30, 2018 , was due to higher current market interest rates compared to rates at December 31, 2017 . All temporarily impaired investment securities were investment grade at June 30, 2018 .

Loans Receivable and Allowance

Loans Receivable and Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Loans Receivable and Allowance for Loan Losses	Loans Receivable and Allowance for Loan Losses Loans receivable at June 30, 2018 and December 31, 2017 are summarized as follows (in thousands): June 30, 2018 December 31, 2017 Mortgage loans: Residential $ 1,118,140 1,142,347 Commercial 2,185,339 2,171,056 Multi-family 1,405,805 1,403,885 Construction 406,893 392,580 Total mortgage loans 5,116,177 5,109,868 Commercial loans 1,688,477 1,745,138 Consumer loans 451,920 473,957 Total gross loans 7,256,574 7,328,963 Purchased credit-impaired ("PCI") loans 928 969 Premiums on purchased loans 3,668 4,029 Unearned discounts (35 ) (36 ) Net deferred fees (7,893 ) (8,207 ) Total loans $ 7,253,242 7,325,718 The following tables summarize the aging of loans receivable by portfolio segment and class of loans, excluding PCI loans (in thousands): June 30, 2018 30-59 Days 60-89 Days Non-accrual Recorded Total Past Due Current Total Loans Receivable Mortgage loans: Residential $ 4,696 2,924 8,984 — 16,604 1,101,536 1,118,140 Commercial 1,116 59 4,149 — 5,324 2,180,015 2,185,339 Multi-family — 400 — — 400 1,405,405 1,405,805 Construction — — — — — 406,893 406,893 Total mortgage loans 5,812 3,383 13,133 — 22,328 5,093,849 5,116,177 Commercial loans 2,589 28 17,517 — 20,134 1,668,343 1,688,477 Consumer loans 2,113 368 1,960 — 4,441 447,479 451,920 Total gross loans $ 10,514 3,779 32,610 — 46,903 7,209,671 7,256,574 December 31, 2017 30-59 Days 60-89 Days Non-accrual Recorded Total Past Current Total Loans Receivable Mortgage loans: Residential $ 7,809 4,325 8,105 — 20,239 1,122,108 1,142,347 Commercial 1,486 — 7,090 — 8,576 2,162,480 2,171,056 Multi-family — — — — — 1,403,885 1,403,885 Construction — — — — — 392,580 392,580 Total mortgage loans 9,295 4,325 15,195 — 28,815 5,081,053 5,109,868 Commercial loans 551 406 17,243 — 18,200 1,726,938 1,745,138 Consumer loans 2,465 487 2,491 — 5,443 468,514 473,957 Total gross loans $ 12,311 5,218 34,929 — 52,458 7,276,505 7,328,963 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 $32.6 million and $34.9 million at June 30, 2018 and December 31, 2017 , respectively. Included in non-accrual loans were $8.7 million and $11.5 million of loans which were less than 90 days past due at June 30, 2018 and December 31, 2017 , respectively. There were no loans 90 days or greater past due and still accruing interest at June 30, 2018 or December 31, 2017 . 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 generally 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, 2018 , there were 152 impaired loans totaling $55.5 million . Included in this total were 128 TDRs related to 124 borrowers totaling $38.0 million that were performing in accordance with their restructured terms and which continued to accrue interest at June 30, 2018 . At December 31, 2017 , there were 149 impaired loans totaling $52.0 million . Included in this total were 125 TDRs to 121 borrowers totaling $31.7 million that were performing in accordance with their restructured terms and which continued to accrue interest at December 31, 2017 . The following table summarizes loans receivable by portfolio segment and impairment method, excluding PCI loans (in thousands): June 30, 2018 Mortgage loans Commercial loans Consumer loans Total Portfolio Segments Individually evaluated for impairment $ 24,737 28,509 2,263 55,509 Collectively evaluated for impairment 5,091,440 1,659,968 449,657 7,201,065 Total gross loans $ 5,116,177 1,688,477 451,920 7,256,574 December 31, 2017 Mortgage loans Commercial loans Consumer loans Total Portfolio Segments Individually evaluated for impairment $ 28,459 21,223 2,359 52,041 Collectively evaluated for impairment 5,081,409 1,723,915 471,598 7,276,922 Total gross loans $ 5,109,868 1,745,138 473,957 7,328,963 The allowance for loan losses is summarized by portfolio segment and impairment classification as follows (in thousands): June 30, 2018 Mortgage loans Commercial loans Consumer loans Total Individually evaluated for impairment $ 1,200 874 66 2,140 Collectively evaluated for impairment 25,961 28,620 2,098 56,679 Total gross loans $ 27,161 29,494 2,164 58,819 December 31, 2017 Mortgage loans Commercial loans Consumer loans Total Individually evaluated for impairment $ 1,486 1,134 70 2,690 Collectively evaluated for impairment 26,566 28,680 2,259 57,505 Total gross loans $ 28,052 29,814 2,329 60,195 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, 2018 and 2017 , along with their balances immediately prior to the modification date and post-modification as of June 30, 2018 and 2017 . For the three months ended June 30, 2018 June 30, 2017 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 1 $ 118 103 3 $ 1,836 $ 1,796 Total mortgage loans 1 118 103 3 1,836 1,796 Total restructured loans 1 $ 118 103 3 $ 1,836 $ 1,796 For the six months ended June 30, 2018 June 30, 2017 Troubled Debt Restructurings Number of Pre-Modification Post-Modification Number of Pre-Modification Post-Modification ($ in thousands) Mortgage loans: Residential 1 $ 118 103 6 $ 2,838 $ 2,774 Total mortgage loans 1 118 103 6 2,838 2,774 Commercial loans 5 8,126 9,179 1 1,300 1,240 Consumer loans — — — 2 240 232 Total restructured loans 6 $ 8,244 $ 9,282 9 $ 4,378 $ 4,246 All TDRs are impaired loans, which are individually evaluated for impairment, as previously discussed. During the three and six months ended June 30, 2018 , $428,000 and $2.0 million of charge-offs were recorded on collateral dependent impaired loans. There were no charge-offs recorded on collateral dependent impaired loans 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. For the three and six months ended June 30, 2018 , the allowance for loan losses associated with the TDRs presented in the preceding tables totaled $0 and $706,650 , respectively, and were included in the allowance for loan losses for loans individually evaluated for impairment. For the three and six months ended June 30, 2018 , the TDRs presented in the preceding tables had a weighted average modified interest rate of approximately 6.13% and 5.62% , respectively, compared to a weighted average rate of 6.13% and 5.18% prior to modification, respectively. The following table presents loans modified as TDRs within the previous 12 months from June 30, 2018 and 2017 , and for which there was a payment default (90 days or more past due) at the quarter ended June 30, 2018 and 2017 . June 30, 2018 June 30, 2017 Troubled Debt Restructurings Subsequently Defaulted Number of Loans Outstanding Recorded Investment Number of Loans Outstanding Recorded Investment ($ in thousands) Mortgage loans: Total mortgage loans — — — — Commercial loans 3 1,344 — $ — Consumer loans — — — — Total restructured loans 3 $ 1,344 — $ — There were three payment defaults on one borrower (90 days or more past due) for loans modified as TDRs within the 12 month period ending June 30, 2018 . There were no payment defaults (90 days or more past due) for loans modified as TDRs within the 12 month period 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. These loans are accounted for at fair value, based upon the present value of expected future cash flows, with no related allowance for loan losses. PCI loans totaled $928,000 at June 30, 2018 and $969,000 at December 31, 2017 . The following table summarizes the changes in the accretable yield for PCI loans during the three and six months ended June 30, 2018 and 2017 (in thousands): Three months ended June 30, Six months ended June 30, 2018 2017 2018 2017 Beginning balance $ 112 172 101 200 Accretion (9 ) (96 ) (29 ) (145 ) Reclassification from non-accretable discount 13 82 44 103 Ending balance $ 116 158 116 158 The activity in the allowance for loan losses by portfolio segment for the three and six months ended June 30, 2018 and 2017 was as follows (in thousands): Three months ended June 30, Mortgage loans Commercial loans Consumer loans Total 2018 Balance at beginning of period $ 28,001 32,326 2,194 62,521 Provision (credited) charged to operations (782 ) 16,436 (154 ) 15,500 Recoveries of loans previously charged-off 44 105 213 362 Loans charged-off (102 ) (19,373 ) (89 ) (19,564 ) Balance at end of period $ 27,161 29,494 2,164 58,819 2017 Balance at beginning of period $ 29,318 29,786 3,051 62,155 Provision (credited) charged to operations (292 ) 1,777 215 1,700 Recoveries of loans previously charged-off 7 73 225 305 Loans charged-off (207 ) (551 ) (540 ) (1,298 ) Balance at end of period $ 28,826 31,085 2,951 62,862 Six months ended June 30, Mortgage Commercial Consumer Total 2018 Balance at beginning of period $ 28,052 29,814 2,329 60,195 Provision (credited) charged to operations (804 ) 21,825 (121 ) 20,900 Recoveries of loans previously charged-off 132 232 392 756 Loans charged-off (219 ) (22,377 ) (436 ) (23,032 ) Balance at end of period $ 27,161 29,494 2,164 58,819 2017 Balance at beginning of period $ 29,626 29,143 3,114 61,883 Provision (credited) charged to operations (423 ) 3,394 229 3,200 Recoveries of loans previously charged-off 61 531 401 993 Loans charged-off (438 ) (1,983 ) (793 ) (3,214 ) Balance at end of period $ 28,826 31,085 2,951 62,862 The following table presents loans individually evaluated for impairment by class and loan category, excluding PCI loans (in thousands): June 30, 2018 December 31, 2017 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 $ 14,083 11,325 — 11,405 282 13,239 10,477 — 10,552 479 Commercial 1,550 1,546 — 1,546 — 5,037 4,908 — 5,022 12 Total 15,633 12,871 — 12,951 282 18,276 15,385 — 15,574 491 Commercial loans 42,720 17,761 — 37,064 209 19,196 14,984 — 15,428 395 Consumer loans 1,536 985 — 1,019 37 1,582 1,041 — 1,150 69 Total impaired loans $ 59,889 31,617 — 51,034 528 39,054 31,410 — 32,152 955 Loans with an allowance recorded Mortgage loans: Residential $ 11,851 10,814 1,123 10,880 221 13,052 12,010 1,351 12,150 475 Commercial 1,052 1,052 77 1,064 26 1,064 1,064 135 1,076 54 Total 12,903 11,866 1,200 11,944 247 14,116 13,074 1,486 13,226 529 Commercial loans 12,035 10,748 874 10,159 170 7,097 6,239 1,134 7,318 208 Consumer loans 1,289 1,278 66 1,305 36 1,329 1,318 70 1,349 64 Total impaired loans $ 26,227 23,892 2,140 23,408 453 22,542 20,631 2,690 21,893 801 Total impaired loans Mortgage loans: Residential $ 25,934 22,139 1,123 22,285 503 26,291 22,487 1,351 22,702 954 Commercial 2,602 2,598 77 2,610 26 6,101 5,972 135 6,098 66 Total 28,536 24,737 1,200 24,895 529 32,392 28,459 1,486 28,800 1,020 Commercial loans 54,755 28,509 874 47,223 379 26,293 21,223 1,134 22,746 603 Consumer loans 2,825 2,263 66 2,324 73 2,911 2,359 70 2,499 133 Total impaired loans $ 86,116 55,509 2,140 74,442 981 61,596 52,041 2,690 54,045 1,756 Specific allocations of the allowance for loan losses attributable to impaired loans totaled $2.1 million at June 30, 2018 and $2.7 million at December 31, 2017 . At June 30, 2018 and December 31, 2017 , impaired loans for which there was no related allowance for loan losses totaled $31.6 million and $31.4 million , respectively. The average balance of impaired loans for the six months ended June 30, 2018 and December 31, 2017 was $74.4 million and $54.0 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, 2018 Residential Commercial mortgage Multi- family Construction Total mortgages Commercial Consumer Total loans Special mention $ 2,924 15,556 — — 18,480 22,614 368 41,462 Substandard 8,984 15,268 236 — 24,488 48,615 1,959 75,062 Doubtful — — — — — 480 — 480 Loss — — — — — — — — Total classified and criticized 11,908 30,824 236 — 42,968 71,709 2,327 117,004 Pass/Watch 1,106,232 2,154,515 1,405,569 406,893 5,073,209 1,616,768 449,593 7,139,570 Total $ 1,118,140 2,185,339 1,405,805 406,893 5,116,177 1,688,477 451,920 7,256,574 At December 31, 2017 Residential Commercial mortgage Multi- family Construction Total mortgages Commercial Consumer Total loans Special mention $ 4,325 19,172 15 — 23,512 20,738 486 44,736 Substandard 8,105 25,069 — — 33,174 29,734 2,491 65,399 Doubtful — — — — — 428 — 428 Loss — — — — — — — — Total classified and criticized 12,430 44,241 15 — 56,686 50,900 2,977 110,563 Pass/Watch 1,129,917 2,126,815 1,403,870 392,580 5,053,182 1,694,238 470,980 7,218,400 Total $ 1,142,347 2,171,056 1,403,885 392,580 5,109,868 1,745,138 473,957 7,328,963

Deposits

Deposits	6 Months Ended
	Jun. 30, 2018
Banking and Thrift [Abstract]
Deposits	Deposits Deposits at June 30, 2018 and December 31, 2017 are summarized as follows (in thousands): June 30, 2018 December 31, 2017 Savings $ 1,070,397 1,083,012 Money market 1,471,683 1,532,024 NOW 1,983,194 2,011,334 Non-interest bearing 1,499,117 1,452,987 Certificates of deposit 649,558 634,809 Total deposits $ 6,673,949 6,714,166

Components of Net Periodic Bene

Components of Net Periodic Benefit Cost	6 Months Ended
	Jun. 30, 2018
Retirement Benefits [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, 2018 and 2017 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 2018 2017 2018 2017 2018 2017 2018 2017 Service cost $ — — 29 26 $ — — 58 52 Interest cost 274 307 197 218 548 614 394 436 Expected return on plan assets (693 ) (638 ) — — (1,386 ) (1,276 ) — — Amortization of prior service cost — — — — — — — — Amortization of the net loss (gain) 199 230 (99 ) (169 ) 398 460 (198 ) (338 ) Net periodic (increase) benefit cost $ (220 ) (101 ) 127 75 $ (440 ) (202 ) 254 150 In its consolidated financial statements for the year ended December 31, 2017 , the Company previously disclosed that it does not expect to contribute to the pension plan in 2018 . As of June 30, 2018 , no contributions have been made to the pension plan. The net periodic benefit (increase) cost for pension benefits and other post-retirement benefits for the three and six months ended June 30, 2018 were calculated using the actual January 1, 2018 pension and other post-retirement benefits valuations.

Impact of Recent Accounting Pro

Impact of Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2018
Accounting Changes and Error Corrections [Abstract]
Impact of Recent Accounting Pronouncements	Impact of Recent Accounting Pronouncements Accounting Pronouncements Adopted in 2018 In March 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("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 adopted this guidance effective January 1, 2018. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. In May 2017, the FASB issued 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 adopted this guidance effective January 1, 2018. The adoption of this ASU did not have a material impact 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 adopted this guidance for the interim reporting period ended March 31, 2018. The adoption of this guidance did not have a material impact on the Company’s consolidated financial statements, nor was additional disclosure deemed necessary. 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 adopted this guidance effective January 1, 2018. As a result, $658,000 of equity securities, as of December 31, 2017, were reclassified from securities available for sale and presented as a separate item on the Consolidated Statements of Financial Condition. The $184,000 after-tax unrealized gain on these securities, at the time of adoption, was reclassified from accumulated other comprehensive income to retained earnings and is reflected in the Consolidated Statements of Changes in Stockholders' Equity. For financial instruments that are measured at amortized cost, the Company measures fair value utilizing an exit pricing methodology, and as such, no changes were required as a result of the adoption of this guidance. In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers (Topic 606)." 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 non-financial 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 are not affected. The Company formed a working group to guide implementation efforts including the identification of revenue within the scope of the guidance, as well as the evaluation of revenue contracts and the respective performance obligations within those contracts. The Company completed its evaluation of this guidance and concluded there are no material changes related to the timing or amount of revenue recognition. The Company adopted this guidance effective January 1, 2018. The adoption of this guidance did not have a significant impact on the Company's consolidated financial statements, but resulted in additional footnote disclosures, including the disaggregation of certain categories of revenue (see Note 10 - "Revenue Recognition"). Accounting Pronouncements Not Yet Adopted In August 2017, the FASB issued ASU 2017-12, "Derivatives and Hedging: Targeted Improvements to Accounting for Hedging." The purpose of this updated guidance is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. ASU 2017-12 is effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. ASU 2017-12 requires a modified retrospective transition method in which the Company will recognize the cumulative effect of the change on the opening balance of each affected component of equity in the statement of financial position as of the date of adoption. 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 only includes 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 this 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 does not expect ASU 2017-04 to have a significant impact 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 continues to evaluate the potential impact of ASU 2016-13 on the consolidated financial statements. In that regard, the Company formed, in the first quarter of 2017, a cross-functional working group, under the direction of the Chief Credit Officer, Chief Financial Officer and Chief Risk Officer. The working group is comprised of individuals from various functional areas including credit, risk management, finance and information technology, among others. The Company developed a detailed implementation plan to include an assessment of processes, portfolio segmentation, model development, model validation, system requirements and the identification of data and resource needs, among other things. The Company has recently selected a system platform and has engaged with third-party vendors to assist with model development, data governance and operational controls to support the adoption of this ASU. The adoption of the ASU 2016-13 may result in an increase in the allowance for loan losses as a result of changing from an "incurred loss" model, which encompasses allowances for current known and inherent losses within the portfolio, to an "expected loss" model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. Furthermore, ASU 2016-13 will necessitate establishing an allowance for expected credit losses on debt securities. The Company is currently unable to reasonably estimate the impact of adopting ASU 2016-13. It is expected that the impact of adoption will be significantly influenced by the composition, characteristics and quality of our loan and securities portfolios as well as the prevailing economic conditions and forecasts as of the adoption date. In 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. In the first quarter of 2018, the Company formed a working group to guide the implementation efforts, including the identification and review of all lease agreements within the scope of the guidance. The working group is in the process of identifying a complete inventory of leases and accumulating the lease data necessary to apply the guidance, as well as evaluating software platforms to aid in the transition to the new lease guidance. The Company is currently assessing the impact that the ASU will have on the Company's consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2018
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, 2018 and December 31, 2017 . Available for Sale Debt Securities, at Fair Value For available for sale debt securities, 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. Equity Securities, at Fair Value The Company holds equity securities 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 Company has interest rate derivatives resulting from a service provided to certain qualified 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 interest rate derivatives not used to manage interest rate risk 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 is 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, 2018 and December 31, 2017 . 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, 2018 and December 31, 2017 . The following tables present the assets and liabilities reported on the consolidated statements of financial condition at their fair values as of June 30, 2018 and December 31, 2017 , by level within the fair value hierarchy: Fair Value Measurements at Reporting Date Using: (In thousands) June 30, 2018 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: Available for sale debt securities: Agency obligations $ 4,999 4,999 — — Mortgage-backed securities 1,019,126 — 1,019,126 — State and municipal obligations 3,318 — 3,318 — Corporate obligations 25,091 — 25,091 — Total available for sale debt securities $ 1,052,534 4,999 1,047,535 — Equity securities 687 687 — — Derivative assets 15,589 — 15,589 — $ 1,068,810 5,686 1,063,124 — Derivative liabilities $ 13,444 — 13,444 — Measured on a non-recurring basis: Loans measured for impairment based on the fair value of the underlying collateral $ 5,947 — — 5,947 Foreclosed assets 6,537 — — 6,537 $ 12,484 — — 12,484 Fair Value Measurements at Reporting Date Using: (In thousands) December 31, 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: Available for sale debt securities: Agency obligations 19,005 19,005 — — Mortgage-backed securities 988,367 — 988,367 — State and municipal obligations 3,388 — 3,388 — Corporate obligations 26,394 — 26,394 — Total available for sale debt securities $ 1,037,154 19,005 1,018,149 — Equity Securities 658 658 — — Derivative assets 7,219 — 7,219 $ 1,045,031 19,663 1,025,368 — Derivative liabilities $ 6,315 — 6,315 — Measured on a non-recurring basis: Loans measured for impairment based on the fair value of the underlying collateral $ 6,971 — — 6,971 Foreclosed assets 6,864 — — 6,864 $ 13,835 — — 13,835 There were no transfers between Level 1, Level 2 and Level 3 during the three and six months ended June 30, 2018 . 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. Held to Maturity Debt Securities For held to maturity debt securities, 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 is 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 (i.e. exit pricing). 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, 2018 and December 31, 2017 . Fair values are presented by level within the fair value hierarchy. Fair Value Measurements at June 30, 2018 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 $ 141,953 141,953 141,953 — — Available for sale debt securities: Agency obligations 4,999 4,999 4,999 — — Mortgage-backed securities 1,019,126 1,019,126 — 1,019,126 — State and municipal obligations 3,318 3,318 — 3,318 — Corporate obligations 25,091 25,091 — 25,091 — Total available for sale debt securities $ 1,052,534 1,052,534 4,999 1,047,535 — Held to maturity debt securities: Agency obligations 4,987 4,844 4,844 — — Mortgage-backed securities 248 256 — 256 — State and municipal obligations 458,624 457,325 — 457,325 — Corporate obligations 9,966 9,760 — 9,760 — Total held to maturity debt securities $ 473,825 472,185 4,844 467,341 — FHLBNY stock 76,772 76,772 76,772 — — Equity Securities 687 687 687 — — Loans, net of allowance for loan losses 7,194,423 7,074,642 — — 7,074,642 Derivative assets 15,589 15,589 — 15,589 — Financial liabilities: Deposits other than certificates of deposits $ 6,024,391 6,024,391 6,024,391 — — Certificates of deposit 649,558 646,616 — 646,616 — Total deposits $ 6,673,949 6,671,007 6,024,391 646,616 — Borrowings 1,641,539 1,626,529 — 1,626,529 — Derivative liabilities 13,444 13,444 — 13,444 — Fair Value Measurements at December 31, 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 $ 190,834 190,834 190,834 — — Available for sale debt securities: Agency obligations 19,005 19,005 19,005 — — Mortgage-backed securities 988,367 988,367 — 988,367 — State and municipal obligations 3,388 3,388 — 3,388 — Corporate obligations 26,394 26,394 — 26,394 — Total available for sale debt securities $ 1,037,154 1,037,154 19,005 1,018,149 — Held to maturity debt securities: Agency obligations $ 4,308 4,221 4,221 — — Mortgage-backed securities 382 396 — 396 — State and municipal obligations 462,942 470,484 — 470,484 — Corporate obligations 10,020 9,938 — 9,938 — Total held to maturity debt securities $ 477,652 485,039 4,221 480,818 — FHLBNY stock 81,184 81,184 81,184 — — Equity Securities 658 658 658 — — Loans, net of allowance for loan losses 7,265,523 7,217,705 — — 7,217,705 Derivative assets 7,219 7,219 — 7,219 — Financial liabilities: Deposits other than certificates of deposits $ 6,079,357 6,079,357 6,079,357 — — Certificates of deposit 634,809 632,744 — 632,744 — Total deposits $ 6,714,166 6,712,101 6,079,357 632,744 — Borrowings 1,742,514 1,739,102 — 1,739,102 — Derivative liabilities 6,315 6,315 — 6,315 —

Other Comprehensive (Loss) Inco

Other Comprehensive (Loss) Income	6 Months Ended
	Jun. 30, 2018
Equity [Abstract]
Other Comprehensive (Loss) Income	Other Comprehensive (Loss) Income The following table presents the components of other comprehensive (loss) income, both gross and net of tax, for the three and six months ended June 30, 2018 and 2017 (in thousands): Three months ended June 30, 2018 2017 Before Tax Tax Effect After Tax Before Tax Tax Effect After Tax Components of Other Comprehensive Income: Unrealized gains and losses on available for sale debt securities: Net (losses) gains arising during the period $ (4,670 ) 1,232 (3,438 ) 2,048 (820 ) 1,228 Reclassification adjustment for gains included in net income — — — — — — Total (4,670 ) 1,232 (3,438 ) 2,048 (820 ) 1,228 Unrealized gains (losses) on derivatives (cash flow hedges) 201 (53 ) 148 (5 ) 2 (3 ) Amortization related to post-retirement obligations 101 (27 ) 74 61 (24 ) 37 Total other comprehensive (loss) income $ (4,368 ) 1,152 (3,216 ) 2,104 (842 ) 1,262 Six months ended June 30, 2018 2017 Before Tax After Before Tax After Components of Other Comprehensive Income: Unrealized gains and losses on available for sale debt securities: Net (losses) gains arising during the period $ (17,763 ) 4,686 (13,077 ) 3,336 (1,337 ) 1,999 Reclassification adjustment for gains included in net income — — — — — — Total (17,763 ) 4,686 (13,077 ) 3,336 (1,337 ) 1,999 Unrealized gains (losses) on derivatives (cash flow hedges) 921 (243 ) 678 87 (35 ) 52 Amortization related to post-retirement obligations 185 (49 ) 136 114 (45 ) 69 Total other comprehensive (loss) income $ (16,657 ) 4,394 (12,263 ) 3,537 (1,417 ) 2,120 The following tables present the changes in the components of accumulated other comprehensive (loss) income, net of tax, for the three and six months ended June 30, 2018 and 2017 (in thousands): Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax for the three months ended June 30, 2018 2017 Unrealized Sale Debt Securities Post- Retirement Unrealized gains on Derivatives (cash flow hedges) Accumulated Unrealized for Sale Debt Securities Post- Retirement Unrealized gains (losses) on Derivatives (cash flow hedges) Accumulated Balance at $ (13,115 ) (4,784 ) 1,203 (16,696 ) 261 (3,024 ) 224 (2,539 ) Current period other comprehensive (loss) income (3,438 ) 74 148 (3,216 ) 1,228 37 (3 ) 1,262 Balance at June 30, $ (16,553 ) (4,710 ) 1,351 (19,912 ) 1,489 (2,987 ) 221 (1,277 ) Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax for the six months ended June 30, 2018 2017 Unrealized Post- Retirement Unrealized gains on Derivatives (cash flow hedges) Accumulated Unrealized Post- Retirement Unrealized gains on Derivatives (cash flow hedges) Accumulated Balance at December 31, $ (3,292 ) (4,846 ) 673 (7,465 ) (510 ) (3,056 ) 169 (3,397 ) Current period other comprehensive (loss) income (13,077 ) 136 678 (12,263 ) 1,999 69 52 2,120 Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01 (184 ) — — (184 ) — — — — Balance at June 30, $ (16,553 ) (4,710 ) 1,351 (19,912 ) 1,489 (2,987 ) 221 (1,277 ) The following tables summarize the reclassifications from accumulated other comprehensive income to the consolidated statements of income for the three and six months ended June 30, 2018 and 2017 (in thousands): Reclassifications From Accumulated Other Comprehensive Amount reclassified from AOCI for the three months ended June 30, Affected line item in the Consolidated 2018 2017 Details of AOCI: Post-retirement obligations: Amortization of actuarial losses $ 100 61 Compensation and employee benefits (1) (26 ) (24 ) Income tax expense Total reclassification $ 74 37 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 2018 2017 Details of AOCI: Post-retirement obligations: Amortization of actuarial losses $ 200 122 Compensation and employee benefits (1) (52 ) (48 ) Income tax expense Total reclassification $ 148 74 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, 2018
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 qualified 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 commercial real estate financed by the Company. The collateral exceeds the maximum potential amount of future payments under the credit derivative. 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, 2018 and December 31, 2017 , the Company had 50 and 48 interest rate swaps, respectively, with aggregate notional amounts of $777.4 million and $718.5 million , respectively, related to this program. Additionally, at June 30, 2018 and December 31, 2017 , the Company had three and two credit derivatives, respectively, with aggregate notional amounts of $29.7 million and $15.8 million , respectively, 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. At June 30, 2018 and December 31, 2017 , the fair value of these credit derivatives was immaterial. 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, 2018 and 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, 2018 and 2017 , 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 $561,000 will be reclassified as an increase to interest expense. As of June 30, 2018 , the Company had two outstanding interest rate derivatives with an aggregate 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, 2018 and December 31, 2017 (in thousands): At June 30, 2018 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 $ 13,671 Other liabilities $ 13,444 Credit contracts Other assets 82 Other liabilities — Total derivatives not designated as a hedging instrument $ 13,753 $ 13,444 Derivatives designated as a hedging instrument: Interest rate products Other assets $ 1,836 Other liabilities $ — Total derivatives designated as a hedging instrument $ 1,836 $ — At December 31, 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 $ 6,303 Other liabilities $ 6,315 Credit contracts Other assets 1 Other liabilities — Total derivatives not designated as a hedging instrument $ 6,304 $ 6,315 Derivatives designated as a hedging instrument: Interest rate products Other assets $ 915 Other liabilities $ — Total derivatives designated as a hedging instrument $ 915 $ — 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, 2018 and 2017 (in thousands). Gain (loss) recognized in Income on derivatives for the three months ended Consolidated Statements of Income June 30, 2018 June 30, 2017 Derivatives not designated as a hedging instrument: Interest rate products Other (expense) $ (64 ) $ (166 ) Credit contracts Other income 81 — Total $ 17 $ (166 ) Derivatives designated as a hedging instrument: Interest rate products Interest expense $ 74 $ (51 ) Total $ 74 $ (51 ) Gain (loss) recognized in Income on derivatives for the six months ended Consolidated Statements of Income June 30, 2018 June 30, 2017 Derivatives not designated as a hedging instrument: Interest rate products Other income (expense) $ 238 $ (392 ) Credit contracts Other income 81 1 Total $ 319 $ (391 ) Derivatives designated as a hedging instrument: Interest rate products Interest expense $ 80 $ (108 ) Total $ 80 $ (108 ) The Company has agreements with certain of its dealer 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 dealer counterparties that contain a provision that if the Company fails to maintain its status as a well/adequately capitalized institution, then the counterparty could terminate the derivative positions and the Company would be required to settle its obligations under the agreements. At June 30, 2018 , the Company had five dealer counterparties, of which, only one dealer counterparty was in a net liability position. The termination value for this net liability position, which includes accrued interest, was $760,000 . The Company has minimum collateral posting thresholds with certain of its derivative counterparties, and has posted collateral of $690,000 against its obligations under these agreements. If the Company had breached any of these provisions at June 30, 2018 , it could have been required to settle its obligations under the agreements at the termination value.

Revenue Recognition

Revenue Recognition	6 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition On January 1, 2018, the Company adopted ASU 2014-09 “Revenue from Contracts with Customers” (Topic 606) and all subsequent ASUs that modified Topic 606. The Company performed a review and assessment of all revenue streams, the related contracts with customers and the underlying performance obligations in those contracts. This guidance does not apply to revenue associated with financial instruments, including interest income on loans and investments, which comprise the majority of the Company's revenue. For the three months ended June 30, 2018 and 2017 , the out-of-scope revenue related to financial instruments was 86% and 84% of the Company's total revenue, respectively. For the six months ended June 30, 2018 and 2017 , the out-of-scope revenue related to financial instruments was 87% and 85% of the Company's total revenue, respectively. Revenue-generating activities that are within the scope of Topic 606, are components of non-interest income. These revenue streams can generally be classified into wealth management revenue and banking service charges and other fees. The adoption of this standard did not change the current measurement or recognition of revenue. As such, a cumulative effect adjustment to opening retained earnings was not deemed necessary. The following table presents non-interest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the three and six months ended June 30, 2018 and 2017 : Three months ended June 30, Six months ended June 30, (in-thousands) 2018 2017 2018 2017 Non-interest income In-scope of Topic 606: Wealth management fees $ 4,602 4,509 $ 9,002 8,722 Banking service charges and other fees: Service charges on deposit accounts 3,240 3,168 6,554 6,314 Debit card and ATM fees 1,556 1,494 2,958 2,846 Total banking service charges and other fees 4,796 4,662 9,512 9,160 Total in-scope non-interest income 9,398 9,171 18,514 17,882 Total out-of-scope non-interest income 4,439 5,648 8,630 9,402 Total non-interest income $ 13,837 14,819 $ 27,144 27,284 Wealth management fee income represents fees earned from customers as consideration for asset management, investment advisory and trust services. The Company’s performance obligation is generally satisfied monthly and the resulting fees are recognized monthly based upon the month-end market value of the assets under management and the applicable fee rate. The monthly accrual of wealth management fees are recorded in other assets on the Company's Consolidated Statements of Financial Condition. Fees are received from the customer either on a quarterly or monthly basis. The Company does not earn performance-based incentives. To a lesser extent, optional services such as tax return preparation and estate settlement are also available to existing customers. The Company’s performance obligation for these transaction-based services are generally satisfied, and related revenue recognized, at either a point in time when the service is completed, or in the case of estate settlement, over a relatively short period of time, as each service component is completed. Service charges on deposit accounts include overdraft service fees, account analysis fees and other deposit related fees. These fees are generally transaction-based, or time-based services. The Company's performance obligation for these services are generally satisfied, and revenue recognized, at the time the transaction is completed, or the service rendered. Fees for these services are generally received from the customer either at the time of transaction, or monthly. Debit card and ATM fees are generally transaction-based. Debit card revenue is primarily comprised of interchange fees earned when a customer's Company card is processed through a card payment network. ATM fees are largely generated when a Company cardholder uses a non-Company ATM, or a non-Company cardholder uses a Company ATM. The Company's performance obligation for these services is satisfied when the service is rendered. Payment is generally received at time of transaction or monthly. Out-of-scope non-interest income primarily consists of Bank-owned life insurance and net fees on loan level interest rate swaps, along with gains and losses on the sale of loans and foreclosed real estate, loan prepayment fees and loan servicing fees. None of these revenue streams are subject to the requirements of Topic 606.

Summary of Significant Accoun18

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2018
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, 2018 are not necessarily indicative of the results of operations that may be expected for all of 2018 . 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, 2017 Annual Report to Stockholders on Form 10-K.
Impact of Recent Accounting Pronouncements	Impact of Recent Accounting Pronouncements Accounting Pronouncements Adopted in 2018 In March 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("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 adopted this guidance effective January 1, 2018. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements. In May 2017, the FASB issued 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 adopted this guidance effective January 1, 2018. The adoption of this ASU did not have a material impact 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 adopted this guidance for the interim reporting period ended March 31, 2018. The adoption of this guidance did not have a material impact on the Company’s consolidated financial statements, nor was additional disclosure deemed necessary. 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 adopted this guidance effective January 1, 2018. As a result, $658,000 of equity securities, as of December 31, 2017, were reclassified from securities available for sale and presented as a separate item on the Consolidated Statements of Financial Condition. The $184,000 after-tax unrealized gain on these securities, at the time of adoption, was reclassified from accumulated other comprehensive income to retained earnings and is reflected in the Consolidated Statements of Changes in Stockholders' Equity. For financial instruments that are measured at amortized cost, the Company measures fair value utilizing an exit pricing methodology, and as such, no changes were required as a result of the adoption of this guidance. In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers (Topic 606)." 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 non-financial 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 are not affected. The Company formed a working group to guide implementation efforts including the identification of revenue within the scope of the guidance, as well as the evaluation of revenue contracts and the respective performance obligations within those contracts. The Company completed its evaluation of this guidance and concluded there are no material changes related to the timing or amount of revenue recognition. The Company adopted this guidance effective January 1, 2018. The adoption of this guidance did not have a significant impact on the Company's consolidated financial statements, but resulted in additional footnote disclosures, including the disaggregation of certain categories of revenue (see Note 10 - "Revenue Recognition"). Accounting Pronouncements Not Yet Adopted In August 2017, the FASB issued ASU 2017-12, "Derivatives and Hedging: Targeted Improvements to Accounting for Hedging." The purpose of this updated guidance is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. ASU 2017-12 is effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. ASU 2017-12 requires a modified retrospective transition method in which the Company will recognize the cumulative effect of the change on the opening balance of each affected component of equity in the statement of financial position as of the date of adoption. 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 only includes 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 this 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 does not expect ASU 2017-04 to have a significant impact 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 continues to evaluate the potential impact of ASU 2016-13 on the consolidated financial statements. In that regard, the Company formed, in the first quarter of 2017, a cross-functional working group, under the direction of the Chief Credit Officer, Chief Financial Officer and Chief Risk Officer. The working group is comprised of individuals from various functional areas including credit, risk management, finance and information technology, among others. The Company developed a detailed implementation plan to include an assessment of processes, portfolio segmentation, model development, model validation, system requirements and the identification of data and resource needs, among other things. The Company has recently selected a system platform and has engaged with third-party vendors to assist with model development, data governance and operational controls to support the adoption of this ASU. The adoption of the ASU 2016-13 may result in an increase in the allowance for loan losses as a result of changing from an "incurred loss" model, which encompasses allowances for current known and inherent losses within the portfolio, to an "expected loss" model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. Furthermore, ASU 2016-13 will necessitate establishing an allowance for expected credit losses on debt securities. The Company is currently unable to reasonably estimate the impact of adopting ASU 2016-13. It is expected that the impact of adoption will be significantly influenced by the composition, characteristics and quality of our loan and securities portfolios as well as the prevailing economic conditions and forecasts as of the adoption date. In 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. In the first quarter of 2018, the Company formed a working group to guide the implementation efforts, including the identification and review of all lease agreements within the scope of the guidance. The working group is in the process of identifying a complete inventory of leases and accumulating the lease data necessary to apply the guidance, as well as evaluating software platforms to aid in the transition to the new lease guidance. The Company is currently assessing the impact that the ASU will have on the Company's consolidated financial statements.

Summary of Significant Accoun19

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2018
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, 2018 and 2017 (dollars in thousands, except per share amounts): Three months ended June 30, 2018 2017 Net Income Weighted Average Common Shares Outstanding Per Share Amount Net Income Weighted Average Common Shares Outstanding Per Share Amount Net income $ 19,243 $ 24,383 Basic earnings per share: Income available to common stockholders $ 19,243 64,911,919 $ 0.30 $ 24,383 64,357,684 $ 0.38 Dilutive shares 187,684 183,387 Diluted earnings per share: Income available to common stockholders $ 19,243 65,099,603 $ 0.30 $ 24,383 64,541,071 $ 0.38 Six months ended June 30, 2018 2017 Net Income Weighted Average Common Shares Outstanding Per Share Amount Net Income Weighted Average Common Shares Outstanding Per Share Amount Net income $ 47,156 $ 47,891 Basic earnings per share: Income available to common stockholders $ 47,156 64,840,843 $ 0.73 $ 47,891 64,263,065 $ 0.75 Dilutive shares 184,074 192,808 Diluted earnings per share: Income available to common stockholders $ 47,156 65,024,917 $ 0.73 $ 47,891 64,455,873 $ 0.74

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2018
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 available for sale debt securities at June 30, 2018 and December 31, 2017 (in thousands): June 30, 2018 Amortized Gross Gross Fair Agency obligations 5,003 — (4 ) 4,999 Mortgage-backed securities 1,041,736 1,932 (24,542 ) 1,019,126 State and municipal obligations 3,237 81 — 3,318 Corporate obligations 25,043 200 (152 ) 25,091 $ 1,075,019 2,213 (24,698 ) 1,052,534 December 31, 2017 Amortized Gross Gross Fair Agency obligations 19,014 — (9 ) 19,005 Mortgage-backed securities 993,548 4,914 (10,095 ) 988,367 State and municipal obligations 3,259 129 — 3,388 Corporate obligations 26,047 359 (12 ) 26,394 $ 1,041,868 5,402 (10,116 ) 1,037,154
Available for sale securities with temporary impairment	The following tables present the fair value and gross unrealized losses for available for sale debt securities with temporary impairment at June 30, 2018 and December 31, 2017 (in thousands): June 30, 2018 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 4,999 (4 ) — — 4,999 (4 ) Mortgage-backed securities 684,255 (14,301 ) 221,953 (10,241 ) 906,208 (24,542 ) Corporate obligations 7,855 (152 ) — — 7,855 (152 ) $ 697,109 (14,457 ) 221,953 (10,241 ) 919,062 (24,698 ) December 31, 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 $ 12,006 (8 ) 6,999 (1 ) 19,005 (9 ) Mortgage-backed securities 420,746 (3,936 ) 235,056 (6,159 ) 655,802 (10,095 ) Corporate obligations — — 989 (12 ) 989 (12 ) $ 432,752 (3,944 ) 243,044 (6,172 ) 675,796 (10,116 )
Investment Securities Held to Maturity	The following tables present the amortized cost, gross unrealized gains, gross unrealized losses and the estimated fair value for held to maturity debt securities at June 30, 2018 and December 31, 2017 (in thousands): June 30, 2018 Amortized cost Gross unrealized gains Gross unrealized losses Fair value Agency obligations $ 4,987 — (143 ) 4,844 Mortgage-backed securities 248 8 — 256 State and municipal obligations 458,624 4,074 (5,373 ) 457,325 Corporate obligations 9,966 1 (207 ) 9,760 $ 473,825 4,083 (5,723 ) 472,185 December 31, 2017 Amortized cost Gross unrealized gains Gross unrealized losses Fair value Agency obligations $ 4,308 — (87 ) 4,221 Mortgage-backed securities 382 14 — 396 State and municipal obligations 462,942 9,280 (1,738 ) 470,484 Corporate obligations 10,020 1 (83 ) 9,938 $ 477,652 9,295 (1,908 ) 485,039 The following tables present the fair value and gross unrealized losses for held to maturity debt securities with temporary impairment at June 30, 2018 and December 31, 2017 (in thousands): June 30, 2018 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 $ 4,475 (143 ) — — 4,475 (143 ) State and municipal obligations 168,467 (2,667 ) 48,054 (2,706 ) 216,521 (5,373 ) Corporate obligations 8,984 (207 ) — — 8,984 (207 ) $ 181,926 (3,017 ) 48,054 (2,706 ) 229,980 (5,723 ) December 31, 2017 Unrealized Losses Less than 12 months 12 months or longer Total Fair Gross Fair Gross Fair Gross Agency obligations $ 3,821 (87 ) — — 3,821 (87 ) State and municipal obligations 37,317 (295 ) 49,488 (1,443 ) 86,805 (1,738 ) Corporate obligations 9,662 (83 ) — — 9,662 (83 ) $ 50,800 (465 ) 49,488 (1,443 ) 100,288 (1,908 )
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 available for sale debt securities at June 30, 2018 , 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, 2018 Amortized cost Fair value Due in one year or less $ — — Due after one year through five years 8,400 8,338 Due after five years through ten years 24,883 25,070 Due after ten years — — $ 33,283 33,408
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 debt securities portfolio at June 30, 2018 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, 2018 Amortized cost Fair value Due in one year or less $ 5,143 5,165 Due after one year through five years 75,121 75,177 Due after five years through ten years 261,417 260,745 Due after ten years 131,896 130,842 $ 473,577 471,929

Loans Receivable and Allowanc21

Loans Receivable and Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Schedule of Summarized Loans Receivable	Loans receivable at June 30, 2018 and December 31, 2017 are summarized as follows (in thousands): June 30, 2018 December 31, 2017 Mortgage loans: Residential $ 1,118,140 1,142,347 Commercial 2,185,339 2,171,056 Multi-family 1,405,805 1,403,885 Construction 406,893 392,580 Total mortgage loans 5,116,177 5,109,868 Commercial loans 1,688,477 1,745,138 Consumer loans 451,920 473,957 Total gross loans 7,256,574 7,328,963 Purchased credit-impaired ("PCI") loans 928 969 Premiums on purchased loans 3,668 4,029 Unearned discounts (35 ) (36 ) Net deferred fees (7,893 ) (8,207 ) Total loans $ 7,253,242 7,325,718
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, 2018 30-59 Days 60-89 Days Non-accrual Recorded Total Past Due Current Total Loans Receivable Mortgage loans: Residential $ 4,696 2,924 8,984 — 16,604 1,101,536 1,118,140 Commercial 1,116 59 4,149 — 5,324 2,180,015 2,185,339 Multi-family — 400 — — 400 1,405,405 1,405,805 Construction — — — — — 406,893 406,893 Total mortgage loans 5,812 3,383 13,133 — 22,328 5,093,849 5,116,177 Commercial loans 2,589 28 17,517 — 20,134 1,668,343 1,688,477 Consumer loans 2,113 368 1,960 — 4,441 447,479 451,920 Total gross loans $ 10,514 3,779 32,610 — 46,903 7,209,671 7,256,574 December 31, 2017 30-59 Days 60-89 Days Non-accrual Recorded Total Past Current Total Loans Receivable Mortgage loans: Residential $ 7,809 4,325 8,105 — 20,239 1,122,108 1,142,347 Commercial 1,486 — 7,090 — 8,576 2,162,480 2,171,056 Multi-family — — — — — 1,403,885 1,403,885 Construction — — — — — 392,580 392,580 Total mortgage loans 9,295 4,325 15,195 — 28,815 5,081,053 5,109,868 Commercial loans 551 406 17,243 — 18,200 1,726,938 1,745,138 Consumer loans 2,465 487 2,491 — 5,443 468,514 473,957 Total gross loans $ 12,311 5,218 34,929 — 52,458 7,276,505 7,328,963
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, 2018 Mortgage loans Commercial loans Consumer loans Total Portfolio Segments Individually evaluated for impairment $ 24,737 28,509 2,263 55,509 Collectively evaluated for impairment 5,091,440 1,659,968 449,657 7,201,065 Total gross loans $ 5,116,177 1,688,477 451,920 7,256,574 December 31, 2017 Mortgage loans Commercial loans Consumer loans Total Portfolio Segments Individually evaluated for impairment $ 28,459 21,223 2,359 52,041 Collectively evaluated for impairment 5,081,409 1,723,915 471,598 7,276,922 Total gross loans $ 5,109,868 1,745,138 473,957 7,328,963
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, 2018 Mortgage loans Commercial loans Consumer loans Total Individually evaluated for impairment $ 1,200 874 66 2,140 Collectively evaluated for impairment 25,961 28,620 2,098 56,679 Total gross loans $ 27,161 29,494 2,164 58,819 December 31, 2017 Mortgage loans Commercial loans Consumer loans Total Individually evaluated for impairment $ 1,486 1,134 70 2,690 Collectively evaluated for impairment 26,566 28,680 2,259 57,505 Total gross loans $ 28,052 29,814 2,329 60,195
Schedule of Troubled Debt Restructuring	The following tables present the number of loans modified as TDRs during the three and six months ended June 30, 2018 and 2017 , along with their balances immediately prior to the modification date and post-modification as of June 30, 2018 and 2017 . For the three months ended June 30, 2018 June 30, 2017 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 1 $ 118 103 3 $ 1,836 $ 1,796 Total mortgage loans 1 118 103 3 1,836 1,796 Total restructured loans 1 $ 118 103 3 $ 1,836 $ 1,796 For the six months ended June 30, 2018 June 30, 2017 Troubled Debt Restructurings Number of Pre-Modification Post-Modification Number of Pre-Modification Post-Modification ($ in thousands) Mortgage loans: Residential 1 $ 118 103 6 $ 2,838 $ 2,774 Total mortgage loans 1 118 103 6 2,838 2,774 Commercial loans 5 8,126 9,179 1 1,300 1,240 Consumer loans — — — 2 240 232 Total restructured loans 6 $ 8,244 $ 9,282 9 $ 4,378 $ 4,246
Schedule of Troubled Debt Restructurings Subsequently Defaulted	The following table presents loans modified as TDRs within the previous 12 months from June 30, 2018 and 2017 , and for which there was a payment default (90 days or more past due) at the quarter ended June 30, 2018 and 2017 . June 30, 2018 June 30, 2017 Troubled Debt Restructurings Subsequently Defaulted Number of Loans Outstanding Recorded Investment Number of Loans Outstanding Recorded Investment ($ in thousands) Mortgage loans: Total mortgage loans — — — — Commercial loans 3 1,344 — $ — Consumer loans — — — — Total restructured loans 3 $ 1,344 — $ —
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, 2018 and 2017 (in thousands): Three months ended June 30, Six months ended June 30, 2018 2017 2018 2017 Beginning balance $ 112 172 101 200 Accretion (9 ) (96 ) (29 ) (145 ) Reclassification from non-accretable discount 13 82 44 103 Ending balance $ 116 158 116 158
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, 2018 and 2017 was as follows (in thousands): Three months ended June 30, Mortgage loans Commercial loans Consumer loans Total 2018 Balance at beginning of period $ 28,001 32,326 2,194 62,521 Provision (credited) charged to operations (782 ) 16,436 (154 ) 15,500 Recoveries of loans previously charged-off 44 105 213 362 Loans charged-off (102 ) (19,373 ) (89 ) (19,564 ) Balance at end of period $ 27,161 29,494 2,164 58,819 2017 Balance at beginning of period $ 29,318 29,786 3,051 62,155 Provision (credited) charged to operations (292 ) 1,777 215 1,700 Recoveries of loans previously charged-off 7 73 225 305 Loans charged-off (207 ) (551 ) (540 ) (1,298 ) Balance at end of period $ 28,826 31,085 2,951 62,862 Six months ended June 30, Mortgage Commercial Consumer Total 2018 Balance at beginning of period $ 28,052 29,814 2,329 60,195 Provision (credited) charged to operations (804 ) 21,825 (121 ) 20,900 Recoveries of loans previously charged-off 132 232 392 756 Loans charged-off (219 ) (22,377 ) (436 ) (23,032 ) Balance at end of period $ 27,161 29,494 2,164 58,819 2017 Balance at beginning of period $ 29,626 29,143 3,114 61,883 Provision (credited) charged to operations (423 ) 3,394 229 3,200 Recoveries of loans previously charged-off 61 531 401 993 Loans charged-off (438 ) (1,983 ) (793 ) (3,214 ) Balance at end of period $ 28,826 31,085 2,951 62,862
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, 2018 December 31, 2017 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 $ 14,083 11,325 — 11,405 282 13,239 10,477 — 10,552 479 Commercial 1,550 1,546 — 1,546 — 5,037 4,908 — 5,022 12 Total 15,633 12,871 — 12,951 282 18,276 15,385 — 15,574 491 Commercial loans 42,720 17,761 — 37,064 209 19,196 14,984 — 15,428 395 Consumer loans 1,536 985 — 1,019 37 1,582 1,041 — 1,150 69 Total impaired loans $ 59,889 31,617 — 51,034 528 39,054 31,410 — 32,152 955 Loans with an allowance recorded Mortgage loans: Residential $ 11,851 10,814 1,123 10,880 221 13,052 12,010 1,351 12,150 475 Commercial 1,052 1,052 77 1,064 26 1,064 1,064 135 1,076 54 Total 12,903 11,866 1,200 11,944 247 14,116 13,074 1,486 13,226 529 Commercial loans 12,035 10,748 874 10,159 170 7,097 6,239 1,134 7,318 208 Consumer loans 1,289 1,278 66 1,305 36 1,329 1,318 70 1,349 64 Total impaired loans $ 26,227 23,892 2,140 23,408 453 22,542 20,631 2,690 21,893 801 Total impaired loans Mortgage loans: Residential $ 25,934 22,139 1,123 22,285 503 26,291 22,487 1,351 22,702 954 Commercial 2,602 2,598 77 2,610 26 6,101 5,972 135 6,098 66 Total 28,536 24,737 1,200 24,895 529 32,392 28,459 1,486 28,800 1,020 Commercial loans 54,755 28,509 874 47,223 379 26,293 21,223 1,134 22,746 603 Consumer loans 2,825 2,263 66 2,324 73 2,911 2,359 70 2,499 133 Total impaired loans $ 86,116 55,509 2,140 74,442 981 61,596 52,041 2,690 54,045 1,756
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, 2018 Residential Commercial mortgage Multi- family Construction Total mortgages Commercial Consumer Total loans Special mention $ 2,924 15,556 — — 18,480 22,614 368 41,462 Substandard 8,984 15,268 236 — 24,488 48,615 1,959 75,062 Doubtful — — — — — 480 — 480 Loss — — — — — — — — Total classified and criticized 11,908 30,824 236 — 42,968 71,709 2,327 117,004 Pass/Watch 1,106,232 2,154,515 1,405,569 406,893 5,073,209 1,616,768 449,593 7,139,570 Total $ 1,118,140 2,185,339 1,405,805 406,893 5,116,177 1,688,477 451,920 7,256,574 At December 31, 2017 Residential Commercial mortgage Multi- family Construction Total mortgages Commercial Consumer Total loans Special mention $ 4,325 19,172 15 — 23,512 20,738 486 44,736 Substandard 8,105 25,069 — — 33,174 29,734 2,491 65,399 Doubtful — — — — — 428 — 428 Loss — — — — — — — — Total classified and criticized 12,430 44,241 15 — 56,686 50,900 2,977 110,563 Pass/Watch 1,129,917 2,126,815 1,403,870 392,580 5,053,182 1,694,238 470,980 7,218,400 Total $ 1,142,347 2,171,056 1,403,885 392,580 5,109,868 1,745,138 473,957 7,328,963

Deposits (Tables)

Deposits (Tables)	6 Months Ended
	Jun. 30, 2018
Banking and Thrift [Abstract]
Schedule of Deposits	Deposits at June 30, 2018 and December 31, 2017 are summarized as follows (in thousands): June 30, 2018 December 31, 2017 Savings $ 1,070,397 1,083,012 Money market 1,471,683 1,532,024 NOW 1,983,194 2,011,334 Non-interest bearing 1,499,117 1,452,987 Certificates of deposit 649,558 634,809 Total deposits $ 6,673,949 6,714,166

Components of Net Periodic Be23

Components of Net Periodic Benefit Cost (Tables)	6 Months Ended
	Jun. 30, 2018
Retirement Benefits [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, 2018 and 2017 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 2018 2017 2018 2017 2018 2017 2018 2017 Service cost $ — — 29 26 $ — — 58 52 Interest cost 274 307 197 218 548 614 394 436 Expected return on plan assets (693 ) (638 ) — — (1,386 ) (1,276 ) — — Amortization of prior service cost — — — — — — — — Amortization of the net loss (gain) 199 230 (99 ) (169 ) 398 460 (198 ) (338 ) Net periodic (increase) benefit cost $ (220 ) (101 ) 127 75 $ (440 ) (202 ) 254 150

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2018
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, 2018 and December 31, 2017 , by level within the fair value hierarchy: Fair Value Measurements at Reporting Date Using: (In thousands) June 30, 2018 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: Available for sale debt securities: Agency obligations $ 4,999 4,999 — — Mortgage-backed securities 1,019,126 — 1,019,126 — State and municipal obligations 3,318 — 3,318 — Corporate obligations 25,091 — 25,091 — Total available for sale debt securities $ 1,052,534 4,999 1,047,535 — Equity securities 687 687 — — Derivative assets 15,589 — 15,589 — $ 1,068,810 5,686 1,063,124 — Derivative liabilities $ 13,444 — 13,444 — Measured on a non-recurring basis: Loans measured for impairment based on the fair value of the underlying collateral $ 5,947 — — 5,947 Foreclosed assets 6,537 — — 6,537 $ 12,484 — — 12,484 Fair Value Measurements at Reporting Date Using: (In thousands) December 31, 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: Available for sale debt securities: Agency obligations 19,005 19,005 — — Mortgage-backed securities 988,367 — 988,367 — State and municipal obligations 3,388 — 3,388 — Corporate obligations 26,394 — 26,394 — Total available for sale debt securities $ 1,037,154 19,005 1,018,149 — Equity Securities 658 658 — — Derivative assets 7,219 — 7,219 $ 1,045,031 19,663 1,025,368 — Derivative liabilities $ 6,315 — 6,315 — Measured on a non-recurring basis: Loans measured for impairment based on the fair value of the underlying collateral $ 6,971 — — 6,971 Foreclosed assets 6,864 — — 6,864 $ 13,835 — — 13,835
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, 2018 and December 31, 2017 . Fair values are presented by level within the fair value hierarchy. Fair Value Measurements at June 30, 2018 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 $ 141,953 141,953 141,953 — — Available for sale debt securities: Agency obligations 4,999 4,999 4,999 — — Mortgage-backed securities 1,019,126 1,019,126 — 1,019,126 — State and municipal obligations 3,318 3,318 — 3,318 — Corporate obligations 25,091 25,091 — 25,091 — Total available for sale debt securities $ 1,052,534 1,052,534 4,999 1,047,535 — Held to maturity debt securities: Agency obligations 4,987 4,844 4,844 — — Mortgage-backed securities 248 256 — 256 — State and municipal obligations 458,624 457,325 — 457,325 — Corporate obligations 9,966 9,760 — 9,760 — Total held to maturity debt securities $ 473,825 472,185 4,844 467,341 — FHLBNY stock 76,772 76,772 76,772 — — Equity Securities 687 687 687 — — Loans, net of allowance for loan losses 7,194,423 7,074,642 — — 7,074,642 Derivative assets 15,589 15,589 — 15,589 — Financial liabilities: Deposits other than certificates of deposits $ 6,024,391 6,024,391 6,024,391 — — Certificates of deposit 649,558 646,616 — 646,616 — Total deposits $ 6,673,949 6,671,007 6,024,391 646,616 — Borrowings 1,641,539 1,626,529 — 1,626,529 — Derivative liabilities 13,444 13,444 — 13,444 — Fair Value Measurements at December 31, 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 $ 190,834 190,834 190,834 — — Available for sale debt securities: Agency obligations 19,005 19,005 19,005 — — Mortgage-backed securities 988,367 988,367 — 988,367 — State and municipal obligations 3,388 3,388 — 3,388 — Corporate obligations 26,394 26,394 — 26,394 — Total available for sale debt securities $ 1,037,154 1,037,154 19,005 1,018,149 — Held to maturity debt securities: Agency obligations $ 4,308 4,221 4,221 — — Mortgage-backed securities 382 396 — 396 — State and municipal obligations 462,942 470,484 — 470,484 — Corporate obligations 10,020 9,938 — 9,938 — Total held to maturity debt securities $ 477,652 485,039 4,221 480,818 — FHLBNY stock 81,184 81,184 81,184 — — Equity Securities 658 658 658 — — Loans, net of allowance for loan losses 7,265,523 7,217,705 — — 7,217,705 Derivative assets 7,219 7,219 — 7,219 — Financial liabilities: Deposits other than certificates of deposits $ 6,079,357 6,079,357 6,079,357 — — Certificates of deposit 634,809 632,744 — 632,744 — Total deposits $ 6,714,166 6,712,101 6,079,357 632,744 — Borrowings 1,742,514 1,739,102 — 1,739,102 — Derivative liabilities 6,315 6,315 — 6,315 —

Other Comprehensive (Loss) In25

Other Comprehensive (Loss) Income (Tables)	6 Months Ended
	Jun. 30, 2018
Equity [Abstract]
Components of Other Comprehensive Income (Loss)	The following table presents the components of other comprehensive (loss) income, both gross and net of tax, for the three and six months ended June 30, 2018 and 2017 (in thousands): Three months ended June 30, 2018 2017 Before Tax Tax Effect After Tax Before Tax Tax Effect After Tax Components of Other Comprehensive Income: Unrealized gains and losses on available for sale debt securities: Net (losses) gains arising during the period $ (4,670 ) 1,232 (3,438 ) 2,048 (820 ) 1,228 Reclassification adjustment for gains included in net income — — — — — — Total (4,670 ) 1,232 (3,438 ) 2,048 (820 ) 1,228 Unrealized gains (losses) on derivatives (cash flow hedges) 201 (53 ) 148 (5 ) 2 (3 ) Amortization related to post-retirement obligations 101 (27 ) 74 61 (24 ) 37 Total other comprehensive (loss) income $ (4,368 ) 1,152 (3,216 ) 2,104 (842 ) 1,262 Six months ended June 30, 2018 2017 Before Tax After Before Tax After Components of Other Comprehensive Income: Unrealized gains and losses on available for sale debt securities: Net (losses) gains arising during the period $ (17,763 ) 4,686 (13,077 ) 3,336 (1,337 ) 1,999 Reclassification adjustment for gains included in net income — — — — — — Total (17,763 ) 4,686 (13,077 ) 3,336 (1,337 ) 1,999 Unrealized gains (losses) on derivatives (cash flow hedges) 921 (243 ) 678 87 (35 ) 52 Amortization related to post-retirement obligations 185 (49 ) 136 114 (45 ) 69 Total other comprehensive (loss) income $ (16,657 ) 4,394 (12,263 ) 3,537 (1,417 ) 2,120
Components of Accumulated Other Comprehensive Income, Net of Tax	The following tables present the changes in the components of accumulated other comprehensive (loss) income, net of tax, for the three and six months ended June 30, 2018 and 2017 (in thousands): Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax for the three months ended June 30, 2018 2017 Unrealized Sale Debt Securities Post- Retirement Unrealized gains on Derivatives (cash flow hedges) Accumulated Unrealized for Sale Debt Securities Post- Retirement Unrealized gains (losses) on Derivatives (cash flow hedges) Accumulated Balance at $ (13,115 ) (4,784 ) 1,203 (16,696 ) 261 (3,024 ) 224 (2,539 ) Current period other comprehensive (loss) income (3,438 ) 74 148 (3,216 ) 1,228 37 (3 ) 1,262 Balance at June 30, $ (16,553 ) (4,710 ) 1,351 (19,912 ) 1,489 (2,987 ) 221 (1,277 ) Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax for the six months ended June 30, 2018 2017 Unrealized Post- Retirement Unrealized gains on Derivatives (cash flow hedges) Accumulated Unrealized Post- Retirement Unrealized gains on Derivatives (cash flow hedges) Accumulated Balance at December 31, $ (3,292 ) (4,846 ) 673 (7,465 ) (510 ) (3,056 ) 169 (3,397 ) Current period other comprehensive (loss) income (13,077 ) 136 678 (12,263 ) 1,999 69 52 2,120 Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01 (184 ) — — (184 ) — — — — Balance at June 30, $ (16,553 ) (4,710 ) 1,351 (19,912 ) 1,489 (2,987 ) 221 (1,277 )
Summary of Reclassifications Out of Accumulated Other Comprehensive Income	The following tables summarize the reclassifications from accumulated other comprehensive income to the consolidated statements of income for the three and six months ended June 30, 2018 and 2017 (in thousands): Reclassifications From Accumulated Other Comprehensive Amount reclassified from AOCI for the three months ended June 30, Affected line item in the Consolidated 2018 2017 Details of AOCI: Post-retirement obligations: Amortization of actuarial losses $ 100 61 Compensation and employee benefits (1) (26 ) (24 ) Income tax expense Total reclassification $ 74 37 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 2018 2017 Details of AOCI: Post-retirement obligations: Amortization of actuarial losses $ 200 122 Compensation and employee benefits (1) (52 ) (48 ) Income tax expense Total reclassification $ 148 74 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 Activ26

Derivatives and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2018
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, 2018 and December 31, 2017 (in thousands): At June 30, 2018 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 $ 13,671 Other liabilities $ 13,444 Credit contracts Other assets 82 Other liabilities — Total derivatives not designated as a hedging instrument $ 13,753 $ 13,444 Derivatives designated as a hedging instrument: Interest rate products Other assets $ 1,836 Other liabilities $ — Total derivatives designated as a hedging instrument $ 1,836 $ — At December 31, 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 $ 6,303 Other liabilities $ 6,315 Credit contracts Other assets 1 Other liabilities — Total derivatives not designated as a hedging instrument $ 6,304 $ 6,315 Derivatives designated as a hedging instrument: Interest rate products Other assets $ 915 Other liabilities $ — Total derivatives designated as a hedging instrument $ 915 $ —
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, 2018 and 2017 (in thousands). Gain (loss) recognized in Income on derivatives for the three months ended Consolidated Statements of Income June 30, 2018 June 30, 2017 Derivatives not designated as a hedging instrument: Interest rate products Other (expense) $ (64 ) $ (166 ) Credit contracts Other income 81 — Total $ 17 $ (166 ) Derivatives designated as a hedging instrument: Interest rate products Interest expense $ 74 $ (51 ) Total $ 74 $ (51 ) Gain (loss) recognized in Income on derivatives for the six months ended Consolidated Statements of Income June 30, 2018 June 30, 2017 Derivatives not designated as a hedging instrument: Interest rate products Other income (expense) $ 238 $ (392 ) Credit contracts Other income 81 1 Total $ 319 $ (391 ) Derivatives designated as a hedging instrument: Interest rate products Interest expense $ 80 $ (108 ) Total $ 80 $ (108 )

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Summary of Non-interest Income	The following table presents non-interest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the three and six months ended June 30, 2018 and 2017 : Three months ended June 30, Six months ended June 30, (in-thousands) 2018 2017 2018 2017 Non-interest income In-scope of Topic 606: Wealth management fees $ 4,602 4,509 $ 9,002 8,722 Banking service charges and other fees: Service charges on deposit accounts 3,240 3,168 6,554 6,314 Debit card and ATM fees 1,556 1,494 2,958 2,846 Total banking service charges and other fees 4,796 4,662 9,512 9,160 Total in-scope non-interest income 9,398 9,171 18,514 17,882 Total out-of-scope non-interest income 4,439 5,648 8,630 9,402 Total non-interest income $ 13,837 14,819 $ 27,144 27,284

Summary of Significant Accoun28

Summary of Significant Accounting Policies (Narrative) (Detail) - shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Accounting Policies [Abstract]
Anti-dilutive stock options and awards excluded from computation of earnings per share	420,544	437,904

Summary of Significant Accoun29

Summary of Significant Accounting Policies (Earnings Per Share) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accounting Policies [Abstract]
Net income	$ 19,243	$ 24,383	$ 47,156	$ 47,891
Basic earnings per share:
Income available to common stockholders, basic	$ 19,243	$ 24,383	$ 47,156	$ 47,891
Weighted average common shares outstanding, basic (in shares)	64,911,919	64,357,684	64,840,843	64,263,065
Income available to common stockholders, per share amount, basic (usd per share)	$ 0.30	$ 0.38	$ 0.73	$ 0.75
Diluted earnings per share:
Income available to common stockholders, diluted	$ 19,243	$ 24,383	$ 47,156	$ 47,891
Dilutive shares (in shares)	187,684	183,387	184,074	192,808
Weighted average common shares outstanding, diluted (in shares)	65,099,603	64,541,071	65,024,917	64,455,873
Income available to common stockholders, per share amount, diluted (usd per share)	$ 0.30	$ 0.38	$ 0.73	$ 0.74

Investment Securities (Narrativ

Investment Securities (Narrative) (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2018USD ($)securityposition	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)securityposition	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)securityposition
Schedule of Held-to-maturity Securities [Line Items]
Available for sale debt securities, at fair value	$ 1,052,534,000		$ 1,052,534,000		$ 1,037,154,000
Securities held to maturity, at fair value	$ 473,825,000		$ 473,825,000		$ 477,652,000
Total number of all held to maturity and available for sale securities in an unrealized loss position | security	595		595		306
Securities available for sale, amortized cost	$ 1,075,019,000		$ 1,075,019,000		$ 1,041,868,000
Securities available for sale, number of securities in an unrealized loss position | position	192		192		122
Held to maturity securities, proceeds from calls	$ 195,000	$ 7,900,000	$ 20,500,000	$ 20,700,000
Held to maturity securities, recognized gain on calls	0	11,000	1,000	11,000
Held to maturity securities, recognized loss on calls	0	$ 0	0	$ 0
Investment securities held to maturity, fair value	$ 472,185,000		$ 472,185,000		$ 485,039,000
Number of securities in an unrealized loss position | security	403		403		184
Private Label Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Securities available for sale, amortized cost	$ 39,000		$ 39,000
Securities available for sale, number of securities in an unrealized loss position | position	2		2
Unrealized losses			$ 1,000
Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Available for sale debt securities, at fair value	$ 1,019,126,000		1,019,126,000		$ 988,367,000
Securities held to maturity, at fair value	248,000		248,000		382,000
Securities available for sale, amortized cost	1,041,736,000		1,041,736,000		993,548,000
Held-to-maturity securities, amortized cost	248,000		248,000
Investment securities held to maturity, fair value	$ 256,000		$ 256,000		$ 396,000

Investment Securities (Securiti

Investment Securities (Securities Available for Sale) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 1,075,019	$ 1,041,868
Gross unrealized gains	2,213	5,402
Gross unrealized losses	(24,698)	(10,116)
Fair value	1,052,534	1,037,154
Agency Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	5,003	19,014
Gross unrealized gains	0	0
Gross unrealized losses	(4)	(9)
Fair value	4,999	19,005
Mortgage-Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	1,041,736	993,548
Gross unrealized gains	1,932	4,914
Gross unrealized losses	(24,542)	(10,095)
Fair value	1,019,126	988,367
State And Municipal Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	3,237	3,259
Gross unrealized gains	81	129
Gross unrealized losses	0	0
Fair value	3,318	3,388
Corporate Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	25,043	26,047
Gross unrealized gains	200	359
Gross unrealized losses	(152)	(12)
Fair value	$ 25,091	$ 26,394

Investment Securities (Availabl

Investment Securities (Available for Sale by Contractual Maturity) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 1,075,019	$ 1,041,868
Fair value	1,052,534	$ 1,037,154
Available-for-sale Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Due in one year or less, amortized cost	0
Due after one year through five years, amortized cost	8,400
Due after five years through ten years, amortized cost	24,883
Due after ten years, amortized cost	0
Amortized cost	33,283
Due in one year or less, fair value	0
Due after one year through five years, fair value	8,338
Due after five years through ten years, fair value	25,070
Due after ten years, fair value	0
Fair value	$ 33,408

Investment Securities (Disclosu

Investment Securities (Disclosure Regarding Length of Time on Securities Available for Sale with Temporary Impairment) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 697,109	$ 432,752
Less than 12 months, gross unrealized losses	(14,457)	(3,944)
12 months or longer, fair value	221,953	243,044
12 months or longer, gross unrealized losses	(10,241)	(6,172)
Total, fair value	919,062	675,796
Total, gross unrealized losses	(24,698)	(10,116)
Agency Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	4,999	12,006
Less than 12 months, gross unrealized losses	(4)	(8)
12 months or longer, fair value	0	6,999
12 months or longer, gross unrealized losses	0	(1)
Total, fair value	4,999	19,005
Total, gross unrealized losses	(4)	(9)
Mortgage-Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	684,255	420,746
Less than 12 months, gross unrealized losses	(14,301)	(3,936)
12 months or longer, fair value	221,953	235,056
12 months or longer, gross unrealized losses	(10,241)	(6,159)
Total, fair value	906,208	655,802
Total, gross unrealized losses	(24,542)	(10,095)
Corporate Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	7,855	0
Less than 12 months, gross unrealized losses	(152)	0
12 months or longer, fair value	0	989
12 months or longer, gross unrealized losses	0	(12)
Total, fair value	7,855	989
Total, gross unrealized losses	$ (152)	$ (12)

Investment Securities (Held to

Investment Securities (Held to Maturity) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	$ 473,825	$ 477,652
Gross unrealized gains	4,083	9,295
Gross unrealized losses	(5,723)	(1,908)
Fair value	472,185	485,039
Agency Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	4,987	4,308
Gross unrealized gains	0	0
Gross unrealized losses	(143)	(87)
Fair value	4,844	4,221
Mortgage-Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	248	382
Gross unrealized gains	8	14
Gross unrealized losses	0	0
Fair value	256	396
State And Municipal Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	458,624	462,942
Gross unrealized gains	4,074	9,280
Gross unrealized losses	(5,373)	(1,738)
Fair value	457,325	470,484
Corporate Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	9,966	10,020
Gross unrealized gains	1	1
Gross unrealized losses	(207)	(83)
Fair value	$ 9,760	$ 9,938

Investment Securities (Securi35

Investment Securities (Securities Held to Maturity by Contractual Maturity) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	$ 473,825	$ 477,652
Fair value	472,185	$ 485,039
Held-to-maturity Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Due in one year or less, amortized cost	5,143
Due after one year through five years, amortized cost	75,121
Due after five years through ten years, amortized cost	261,417
Due after ten years, amortized cost	131,896
Amortized cost	473,577
Due in one year or less, fair value	5,165
Due after one year through five years, fair value	75,177
Due after five years through ten years, fair value	260,745
Due after ten years, fair value	130,842
Fair value	$ 471,929

Investment Securities (Disclo36

Investment Securities (Disclosure Regarding Length of Time on Investment Securities with Temporary Impairment) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	$ 181,926	$ 50,800
Less than 12 months, gross unrealized losses	(3,017)	(465)
12 months or longer, fair value	48,054	49,488
12 months or longer, gross unrealized losses	(2,706)	(1,443)
Total, fair value	229,980	100,288
Total, gross unrealized losses	(5,723)	(1,908)
Agency Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	4,475	3,821
Less than 12 months, gross unrealized losses	(143)	(87)
12 months or longer, fair value	0	0
12 months or longer, gross unrealized losses	0	0
Total, fair value	4,475	3,821
Total, gross unrealized losses	(143)	(87)
State And Municipal Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	168,467	37,317
Less than 12 months, gross unrealized losses	(2,667)	(295)
12 months or longer, fair value	48,054	49,488
12 months or longer, gross unrealized losses	(2,706)	(1,443)
Total, fair value	216,521	86,805
Total, gross unrealized losses	(5,373)	(1,738)
Corporate Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	8,984	9,662
Less than 12 months, gross unrealized losses	(207)	(83)
12 months or longer, fair value	0	0
12 months or longer, gross unrealized losses	0	0
Total, fair value	8,984	9,662
Total, gross unrealized losses	$ (207)	$ (83)

Loans Receivable and Allowanc37

Loans Receivable and Allowance for Loan Losses (Narrative) (Detail)	3 Months Ended		6 Months Ended			12 Months Ended
	Jun. 30, 2018USD ($)Contract	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)Contractborrowertroubled_debt_restructuringSecurityLoan	Dec. 31, 2017USD ($)Contract	Jun. 30, 2017USD ($)SecurityLoan	Jun. 30, 2018USD ($)ContractSecurityLoan	Dec. 31, 2017USD ($)Contractborrowertroubled_debt_restructuringSecurityLoan	Jun. 30, 2017SecurityLoan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal amount of nonaccrual loans	$ 32,600,000		$ 32,600,000	$ 34,900,000		$ 32,600,000	$ 34,900,000
Loans less than 90 days past due	$ 8,700,000		$ 8,700,000	$ 11,500,000		$ 8,700,000	$ 11,500,000
Number of loans 90 days past due and still accruing | Contract	0		0	0		0	0
Impaired loan defined floor limit (greater than)	$ 1,000,000		$ 1,000,000			$ 1,000,000
Impaired loans number | SecurityLoan			152				149
Impaired loans	55,509,000		$ 55,509,000	$ 52,041,000		55,509,000	$ 52,041,000
Number of troubled debt restructurings | troubled_debt_restructuring			128				125
Number of borrowers | borrower			124				121
Loans and leases receivable, impaired, nonperforming, accrual of interest	38,000,000		$ 38,000,000	31,700,000		$ 38,000,000	$ 31,700,000
Charge off, impaired loan	$ 428,000	$ 0	$ 2,000,000		$ 1,200,000
Weighted average modified interest rate	6.13%		5.62%
Weighted average prior modification rate	6.13%		5.18%
Number of payment defaults for loans modified as TDRs | SecurityLoan			3		0	3		0
Allowances for loan losses	$ 2,140,000		$ 2,140,000	2,690,000		$ 2,140,000	2,690,000
Impaired financing receivable with no related allowance	31,600,000		31,600,000	31,400,000		31,600,000	31,400,000
Average balance of impaired loans			74,442,000	54,000,000			54,045,000
Team Capital Bank [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance of PCI loans	928,000		928,000	$ 969,000		$ 928,000	$ 969,000
Impaired Loans Troubled Debt Restructurings [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Allowances for loan losses	$ 0		$ 706,650

Loans Receivable and Allowanc38

Loans Receivable and Allowance for Loan Losses (Schedule of Summarized Loans Receivable) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	$ 7,256,574	$ 7,328,963
Premiums on purchased loans	3,668	4,029
Unearned discounts	(35)	(36)
Net deferred fees	(7,893)	(8,207)
Total loans	7,253,242	7,325,718
Purchased credit-impaired (PCI) loans [Member]
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	928	969
Mortgage Portfolio Segment [Member]
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	5,116,177	5,109,868
Mortgage Portfolio Segment [Member] | Residential [Member]
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	1,118,140	1,142,347
Mortgage Portfolio Segment [Member] | Commercial [Member]
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	2,185,339	2,171,056
Mortgage Portfolio Segment [Member] | Multi-Family [Member]
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	1,405,805	1,403,885
Mortgage Portfolio Segment [Member] | Construction [Member]
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	406,893	392,580
Commercial Loans [Member]
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	1,688,477	1,745,138
Consumer Loans [Member]
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	$ 451,920	$ 473,957

Loans Receivable and Allowanc39

Loans Receivable and Allowance for Loan Losses (Summary of Aging Loans Receivable by Portfolio Segment and Class) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	$ 32,610	$ 34,929
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	46,903	52,458
Current	7,209,671	7,276,505
Total gross loans	7,256,574	7,328,963
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	10,514	12,311
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	3,779	5,218
Mortgage Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	13,133	15,195
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	22,328	28,815
Current	5,093,849	5,081,053
Total gross loans	5,116,177	5,109,868
Mortgage Portfolio Segment [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	8,984	8,105
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	16,604	20,239
Current	1,101,536	1,122,108
Total gross loans	1,118,140	1,142,347
Mortgage Portfolio Segment [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	4,149	7,090
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	5,324	8,576
Current	2,180,015	2,162,480
Total gross loans	2,185,339	2,171,056
Mortgage Portfolio Segment [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	0	0
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	400	0
Current	1,405,405	1,403,885
Total gross loans	1,405,805	1,403,885
Mortgage Portfolio Segment [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	0	0
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	0	0
Current	406,893	392,580
Total gross loans	406,893	392,580
Mortgage Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	5,812	9,295
Mortgage Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	4,696	7,809
Mortgage Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	1,116	1,486
Mortgage Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	0	0
Mortgage Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	0	0
Mortgage Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	3,383	4,325
Mortgage Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	2,924	4,325
Mortgage Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	59	0
Mortgage Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	400	0
Mortgage Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	0	0
Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	17,517	17,243
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	20,134	18,200
Current	1,668,343	1,726,938
Total gross loans	1,688,477	1,745,138
Commercial Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	2,589	551
Commercial Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	28	406
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	1,960	2,491
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	4,441	5,443
Current	447,479	468,514
Total gross loans	451,920	473,957
Consumer Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	2,113	2,465
Consumer Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	$ 368	$ 487

Loans Receivable and Allowanc40

Loans Receivable and Allowance for Loan Losses (Summary of Loans Receivable by Portfolio Segment and Impairment Method) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	$ 55,509	$ 52,041
Collectively evaluated for impairment	7,201,065	7,276,922
Total gross loans	7,256,574	7,328,963
Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	24,737	28,459
Collectively evaluated for impairment	5,091,440	5,081,409
Total gross loans	5,116,177	5,109,868
Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	28,509	21,223
Collectively evaluated for impairment	1,659,968	1,723,915
Total gross loans	1,688,477	1,745,138
Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	2,263	2,359
Collectively evaluated for impairment	449,657	471,598
Total gross loans	$ 451,920	$ 473,957

Loans Receivable and Allowanc41

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, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	$ 2,140		$ 2,690
Collectively evaluated for impairment	56,679		57,505
Total	58,819	$ 62,521	60,195	$ 62,862	$ 62,155	$ 61,883
Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	1,200		1,486
Collectively evaluated for impairment	25,961		26,566
Total	27,161	28,001	28,052	28,826	29,318	29,626
Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	874		1,134
Collectively evaluated for impairment	28,620		28,680
Total	29,494	32,326	29,814	31,085	29,786	29,143
Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	66		70
Collectively evaluated for impairment	2,098		2,259
Total	$ 2,164	$ 2,194	$ 2,329	$ 2,951	$ 3,051	$ 3,114

Loans Receivable and Allowanc42

Loans Receivable and Allowance for Loan Losses (Schedule of Troubled Debt Restructurings) (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018USD ($)SecurityLoan	Jun. 30, 2017USD ($)SecurityLoan	Jun. 30, 2018USD ($)SecurityLoan	Jun. 30, 2017USD ($)SecurityLoan
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | SecurityLoan	1	3	6	9
Pre-Modification Outstanding Recorded Investment	$ 118	$ 1,836	$ 8,244	$ 4,378
Post-Modification Outstanding Recorded Investment	$ 103	$ 1,796	$ 9,282	$ 4,246
Mortgage Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | SecurityLoan	1	3	1	6
Pre-Modification Outstanding Recorded Investment	$ 118	$ 1,836	$ 118	$ 2,838
Post-Modification Outstanding Recorded Investment	$ 103	$ 1,796	$ 103	$ 2,774
Mortgage Portfolio Segment [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | SecurityLoan	1	3	1	6
Pre-Modification Outstanding Recorded Investment	$ 118	$ 1,836	$ 118	$ 2,838
Post-Modification Outstanding Recorded Investment	$ 103	$ 1,796	$ 103	$ 2,774
Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | SecurityLoan			5	1
Pre-Modification Outstanding Recorded Investment			$ 8,126	$ 1,300
Post-Modification Outstanding Recorded Investment			$ 9,179	$ 1,240
Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans | SecurityLoan			0	2
Pre-Modification Outstanding Recorded Investment			$ 0	$ 240
Post-Modification Outstanding Recorded Investment			$ 0	$ 232

Loans Receivable and Allowanc43

Loans Receivable and Allowance for Loan Losses (Schedule of Trouble Debt Restructuring Subsequently Defaulted) (Detail) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2018USD ($)SecurityLoan	Jun. 30, 2017USD ($)SecurityLoan	Jun. 30, 2018SecurityLoan	Jun. 30, 2017SecurityLoan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	3	0	3	0
Outstanding Recorded Investment | $	$ 1,344	$ 0
Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	0	0
Outstanding Recorded Investment | $	$ 0	$ 0
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	3	0
Outstanding Recorded Investment | $	$ 1,344	$ 0
Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	0	0
Outstanding Recorded Investment | $	$ 0	$ 0

Loans Receivable and Allowanc44

Loans Receivable and Allowance for Loan Losses (Change in Accretable Yield) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning balance	$ 112	$ 172	$ 101	$ 200
Accretion	(9)	(96)	(29)	(145)
Reclassification from non-accretable discount	13	82	44	103
Ending balance	$ 116	$ 158	$ 116	$ 158

Loans Receivable and Allowanc45

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, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 62,521	$ 62,155	$ 60,195	$ 61,883
Provision (credited) charged to operations	15,500	1,700	20,900	3,200
Recoveries of loans previously charged-off	362	305	756	993
Loans charged-off	(19,564)	(1,298)	(23,032)	(3,214)
Balance at end of period	58,819	62,862	58,819	62,862
Mortgage Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	28,001	29,318	28,052	29,626
Provision (credited) charged to operations	(782)	(292)	(804)	(423)
Recoveries of loans previously charged-off	44	7	132	61
Loans charged-off	(102)	(207)	(219)	(438)
Balance at end of period	27,161	28,826	27,161	28,826
Commercial Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	32,326	29,786	29,814	29,143
Provision (credited) charged to operations	16,436	1,777	21,825	3,394
Recoveries of loans previously charged-off	105	73	232	531
Loans charged-off	(19,373)	(551)	(22,377)	(1,983)
Balance at end of period	29,494	31,085	29,494	31,085
Consumer Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	2,194	3,051	2,329	3,114
Provision (credited) charged to operations	(154)	215	(121)	229
Recoveries of loans previously charged-off	213	225	392	401
Loans charged-off	(89)	(540)	(436)	(793)
Balance at end of period	$ 2,164	$ 2,951	$ 2,164	$ 2,951

Loans Receivable and Allowanc46

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, 2018	Dec. 31, 2017	Dec. 31, 2017
Loans with no related allowance
Loans with no related allowance, Unpaid Principal Balance	$ 59,889	$ 39,054	$ 39,054
Loans with no related allowance, Recorded Investment	31,617	31,410	31,410
Loans with no related allowance, Average Recorded Investment	51,034		32,152
Loans with no related allowance, Interest Income Recognized	528		955
Loans with an allowance recorded
Loans with an allowance recorded, Unpaid Principal Balance	26,227	22,542	22,542
Loans with an allowance recorded, Recorded Investment	23,892	20,631	20,631
Loans with an allowance recorded, Average Recorded Investment	23,408		21,893
Loans with an allowance recorded, Interest Income Recognized	453		801
Total impaired loans
Unpaid Principal Balance	86,116	61,596	61,596
Recorded Investment	55,509	52,041	52,041
Related Allowance	2,140	2,690	2,690
Average Recorded Investment	74,442	54,000	54,045
Interest Income Recognized	981		1,756
Mortgage Portfolio Segment [Member]
Loans with no related allowance
Loans with no related allowance, Unpaid Principal Balance	15,633	18,276	18,276
Loans with no related allowance, Recorded Investment	12,871	15,385	15,385
Loans with no related allowance, Average Recorded Investment	12,951		15,574
Loans with no related allowance, Interest Income Recognized	282		491
Loans with an allowance recorded
Loans with an allowance recorded, Unpaid Principal Balance	12,903	14,116	14,116
Loans with an allowance recorded, Recorded Investment	11,866	13,074	13,074
Loans with an allowance recorded, Average Recorded Investment	11,944		13,226
Loans with an allowance recorded, Interest Income Recognized	247		529
Total impaired loans
Unpaid Principal Balance	28,536	32,392	32,392
Recorded Investment	24,737	28,459	28,459
Related Allowance	1,200	1,486	1,486
Average Recorded Investment	24,895		28,800
Interest Income Recognized	529		1,020
Mortgage Portfolio Segment [Member] | Residential [Member]
Loans with no related allowance
Loans with no related allowance, Unpaid Principal Balance	14,083	13,239	13,239
Loans with no related allowance, Recorded Investment	11,325	10,477	10,477
Loans with no related allowance, Average Recorded Investment	11,405		10,552
Loans with no related allowance, Interest Income Recognized	282		479
Loans with an allowance recorded
Loans with an allowance recorded, Unpaid Principal Balance	11,851	13,052	13,052
Loans with an allowance recorded, Recorded Investment	10,814	12,010	12,010
Loans with an allowance recorded, Average Recorded Investment	10,880		12,150
Loans with an allowance recorded, Interest Income Recognized	221		475
Total impaired loans
Unpaid Principal Balance	25,934	26,291	26,291
Recorded Investment	22,139	22,487	22,487
Related Allowance	1,123	1,351	1,351
Average Recorded Investment	22,285		22,702
Interest Income Recognized	503		954
Mortgage Portfolio Segment [Member] | Commercial [Member]
Loans with no related allowance
Loans with no related allowance, Unpaid Principal Balance	1,550	5,037	5,037
Loans with no related allowance, Recorded Investment	1,546	4,908	4,908
Loans with no related allowance, Average Recorded Investment	1,546		5,022
Loans with no related allowance, Interest Income Recognized	0		12
Loans with an allowance recorded
Loans with an allowance recorded, Unpaid Principal Balance	1,052	1,064	1,064
Loans with an allowance recorded, Recorded Investment	1,052	1,064	1,064
Loans with an allowance recorded, Average Recorded Investment	1,064		1,076
Loans with an allowance recorded, Interest Income Recognized	26		54
Total impaired loans
Unpaid Principal Balance	2,602	6,101	6,101
Recorded Investment	2,598	5,972	5,972
Related Allowance	77	135	135
Average Recorded Investment	2,610		6,098
Interest Income Recognized	26		66
Commercial Loans [Member]
Loans with no related allowance
Loans with no related allowance, Unpaid Principal Balance	42,720	19,196	19,196
Loans with no related allowance, Recorded Investment	17,761	14,984	14,984
Loans with no related allowance, Average Recorded Investment	37,064		15,428
Loans with no related allowance, Interest Income Recognized	209		395
Loans with an allowance recorded
Loans with an allowance recorded, Unpaid Principal Balance	12,035	7,097	7,097
Loans with an allowance recorded, Recorded Investment	10,748	6,239	6,239
Loans with an allowance recorded, Average Recorded Investment	10,159		7,318
Loans with an allowance recorded, Interest Income Recognized	170		208
Total impaired loans
Unpaid Principal Balance	54,755	26,293	26,293
Recorded Investment	28,509	21,223	21,223
Related Allowance	874	1,134	1,134
Average Recorded Investment	47,223		22,746
Interest Income Recognized	379		603
Consumer Loans [Member]
Loans with no related allowance
Loans with no related allowance, Unpaid Principal Balance	1,536	1,582	1,582
Loans with no related allowance, Recorded Investment	985	1,041	1,041
Loans with no related allowance, Average Recorded Investment	1,019		1,150
Loans with no related allowance, Interest Income Recognized	37		69
Loans with an allowance recorded
Loans with an allowance recorded, Unpaid Principal Balance	1,289	1,329	1,329
Loans with an allowance recorded, Recorded Investment	1,278	1,318	1,318
Loans with an allowance recorded, Average Recorded Investment	1,305		1,349
Loans with an allowance recorded, Interest Income Recognized	36		64
Total impaired loans
Unpaid Principal Balance	2,825	2,911	2,911
Recorded Investment	2,263	2,359	2,359
Related Allowance	66	$ 70	70
Average Recorded Investment	2,324		2,499
Interest Income Recognized	$ 73		$ 133

Loans Receivable and Allowanc47

Loans Receivable and Allowance for Loan Losses (Summary of Loans Receivable by Credit Quality Risk Rating Indicator) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 7,256,574	$ 7,328,963
Total classified and criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	117,004	110,563
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	41,462	44,736
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	75,062	65,399
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	480	428
Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	7,139,570	7,218,400
Mortgage Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	5,116,177	5,109,868
Mortgage Portfolio Segment [Member] | Total classified and criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	42,968	56,686
Mortgage Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	18,480	23,512
Mortgage Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	24,488	33,174
Mortgage Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	5,073,209	5,053,182
Mortgage Portfolio Segment [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,118,140	1,142,347
Mortgage Portfolio Segment [Member] | Residential [Member] | Total classified and criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	11,908	12,430
Mortgage Portfolio Segment [Member] | Residential [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	2,924	4,325
Mortgage Portfolio Segment [Member] | Residential [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	8,984	8,105
Mortgage Portfolio Segment [Member] | Residential [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Residential [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Residential [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,106,232	1,129,917
Mortgage Portfolio Segment [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	2,185,339	2,171,056
Mortgage Portfolio Segment [Member] | Commercial [Member] | Total classified and criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	30,824	44,241
Mortgage Portfolio Segment [Member] | Commercial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	15,556	19,172
Mortgage Portfolio Segment [Member] | Commercial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	15,268	25,069
Mortgage Portfolio Segment [Member] | Commercial [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Commercial [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Commercial [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	2,154,515	2,126,815
Mortgage Portfolio Segment [Member] | Multi-Family [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,405,805	1,403,885
Mortgage Portfolio Segment [Member] | Multi-Family [Member] | Total classified and criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	236	15
Mortgage Portfolio Segment [Member] | Multi-Family [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	15
Mortgage Portfolio Segment [Member] | Multi-Family [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	236	0
Mortgage Portfolio Segment [Member] | Multi-Family [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Multi-Family [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Multi-Family [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,405,569	1,403,870
Mortgage Portfolio Segment [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	406,893	392,580
Mortgage Portfolio Segment [Member] | Construction [Member] | Total classified and criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Construction [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Construction [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Construction [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Construction [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment [Member] | Construction [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	406,893	392,580
Commercial Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,688,477	1,745,138
Commercial Loans [Member] | Total classified and criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	71,709	50,900
Commercial Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	22,614	20,738
Commercial Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	48,615	29,734
Commercial Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	480	428
Commercial Loans [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Commercial Loans [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,616,768	1,694,238
Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	451,920	473,957
Consumer Loans [Member] | Total classified and criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	2,327	2,977
Consumer Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	368	486
Consumer Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,959	2,491
Consumer Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Consumer Loans [Member] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Consumer Loans [Member] | Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 449,593	$ 470,980

Deposits (Detail)

Deposits (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Savings	$ 1,070,397	$ 1,083,012
Money market	1,471,683	1,532,024
NOW	1,983,194	2,011,334
Non-interest bearing	1,499,117	1,452,987
Certificates of deposit	649,558	634,809
Total deposits	$ 6,673,949	$ 6,714,166

Components of Net Periodic Be49

Components of Net Periodic Benefit Cost (Narrative) (Detail) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2006	Dec. 31, 2002
Retirement Benefits [Abstract]
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 Be50

Components of Net Periodic Benefit Cost (Benefit Cost (Increase)) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Pension benefits [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	274	307	548	614
Expected return on plan assets	(693)	(638)	(1,386)	(1,276)
Amortization of prior service cost	0	0	0	0
Amortization of the net loss (gain)	199	230	398	460
Net periodic (increase) benefit cost	(220)	(101)	(440)	(202)
Other post-retirement benefits [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Service cost	29	26	58	52
Interest cost	197	218	394	436
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Amortization of the net loss (gain)	(99)	(169)	(198)	(338)
Net periodic (increase) benefit cost	$ 127	$ 75	$ 254	$ 150

Impact of Recent Accounting P51

Impact of Recent Accounting Pronouncements (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity securities, at fair value	$ 687	$ 658
Accounting Standards Update 2016-01 [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Equity securities, at fair value		$ 658
After tax effect on retained earnings	$ 184

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Detail)	6 Months Ended
	Jun. 30, 2018
Minimum [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated selling costs	5.00%
Maximum [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated selling costs	10.00%

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	$ 1,052,534	$ 1,037,154
Equity securities	687	658
Derivative liabilities	760
Measured on a non-recurring basis:
Foreclosed assets	6,537	6,864
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	4,999	19,005
Equity securities	687	658
Derivative assets	0	0
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	1,047,535	1,018,149
Equity securities	0	0
Derivative assets	15,589	7,219
Derivative liabilities	13,444	6,315
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Equity securities	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Agency Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	4,999	19,005
Agency Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Agency Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Mortgage-Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	1,019,126	988,367
Mortgage-Backed Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Mortgage-Backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	1,019,126	988,367
Mortgage-Backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
State And Municipal Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	3,318	3,388
State And Municipal Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
State And Municipal Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	3,318	3,388
State And Municipal Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Corporate Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	25,091	26,394
Corporate Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Corporate Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	25,091	26,394
Corporate Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Measured on a Recurring Basis [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	1,052,534	1,037,154
Equity securities	687	658
Derivative assets	15,589	7,219
Total assets at fair value	1,068,810	1,045,031
Derivative liabilities	13,444	6,315
Measured on a Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	4,999	19,005
Equity securities	687	658
Derivative assets	0	0
Total assets at fair value	5,686	19,663
Derivative liabilities	0	0
Measured on a Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	1,047,535	1,018,149
Equity securities	0	0
Derivative assets	15,589	7,219
Total assets at fair value	1,063,124	1,025,368
Derivative liabilities	13,444	6,315
Measured on a Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Equity securities	0	0
Derivative assets	0
Total assets at fair value	0	0
Derivative liabilities	0	0
Measured on a Recurring Basis [Member] | Agency Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	4,999	19,005
Measured on a Recurring Basis [Member] | Agency Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	4,999	19,005
Measured on a Recurring Basis [Member] | Agency Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Measured on a Recurring Basis [Member] | Agency Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Measured on a Recurring Basis [Member] | Mortgage-Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	1,019,126	988,367
Measured on a Recurring Basis [Member] | Mortgage-Backed Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Measured on a Recurring Basis [Member] | Mortgage-Backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	1,019,126	988,367
Measured on a Recurring Basis [Member] | Mortgage-Backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Measured on a Recurring Basis [Member] | State And Municipal Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	3,318	3,388
Measured on a Recurring Basis [Member] | State And Municipal Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Measured on a Recurring Basis [Member] | State And Municipal Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	3,318	3,388
Measured on a Recurring Basis [Member] | State And Municipal Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Measured on a Recurring Basis [Member] | Corporate Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	25,091	26,394
Measured on a Recurring Basis [Member] | Corporate Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Measured on a Recurring Basis [Member] | Corporate Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	25,091	26,394
Measured on a Recurring Basis [Member] | Corporate Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities, at fair value	0	0
Measured on a Non-Recurring Basis [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	12,484	13,835
Measured on a non-recurring basis:
Loans measured for impairment based on the fair value of the underlying collateral	5,947	6,971
Foreclosed assets	6,537	6,864
Measured on a Non-Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	0	0
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
Measured on a Non-Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	0	0
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
Measured on a Non-Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	12,484	13,835
Measured on a non-recurring basis:
Loans measured for impairment based on the fair value of the underlying collateral	5,947	6,971
Foreclosed assets	$ 6,537	$ 6,864

Fair Value Measurements (Financ

Fair Value Measurements (Financial Instruments) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Financial assets:
Cash and cash equivalents	$ 141,953	$ 190,834	$ 153,402	$ 144,297
Available for sale debt securities, at fair value	1,052,534	1,037,154
Investment securities held to maturity, fair value	472,185	485,039
FHLBNY stock	76,772	81,184
Equity securities, at fair value	687	658
Loans, net of allowance for loan losses	7,194,423	7,265,523
Financial liabilities:
Certificates of deposit	649,558	634,809
Total deposits	6,673,949	6,714,166
Borrowings	1,641,539	1,742,514
Derivative liabilities	760
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Cash and cash equivalents	141,953	190,834
Available for sale debt securities, at fair value	4,999	19,005
Investment securities held to maturity, fair value	4,844	4,221
FHLBNY stock	76,772	81,184
Equity securities, at fair value	687	658
Loans, net of allowance for loan losses	0	0
Derivative assets	0	0
Financial liabilities:
Deposits other than certificates of deposits	6,024,391	6,079,357
Certificates of deposit	0	0
Total deposits	6,024,391	6,079,357
Borrowings	0	0
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Cash and cash equivalents	0	0
Available for sale debt securities, at fair value	1,047,535	1,018,149
Investment securities held to maturity, fair value	467,341	480,818
FHLBNY stock	0	0
Equity securities, at fair value	0	0
Loans, net of allowance for loan losses	0	0
Derivative assets	15,589	7,219
Financial liabilities:
Deposits other than certificates of deposits	0	0
Certificates of deposit	646,616	632,744
Total deposits	646,616	632,744
Borrowings	1,626,529	1,739,102
Derivative liabilities	13,444	6,315
Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Cash and cash equivalents	0	0
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
FHLBNY stock	0	0
Equity securities, at fair value	0	0
Loans, net of allowance for loan losses	7,074,642	7,217,705
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	141,953	190,834
Available for sale debt securities, at fair value	1,052,534	1,037,154
Investment securities held to maturity, fair value	473,825	477,652
FHLBNY stock	76,772	81,184
Equity securities, at fair value	687	658
Loans, net of allowance for loan losses	7,194,423	7,265,523
Derivative assets	15,589	7,219
Financial liabilities:
Deposits other than certificates of deposits	6,024,391	6,079,357
Certificates of deposit	649,558	634,809
Total deposits	6,673,949	6,714,166
Borrowings	1,641,539	1,742,514
Derivative liabilities	13,444	6,315
Fair Value [Member]
Financial assets:
Cash and cash equivalents	141,953	190,834
Available for sale debt securities, at fair value	1,052,534	1,037,154
Investment securities held to maturity, fair value	472,185	485,039
FHLBNY stock	76,772	81,184
Equity securities, at fair value	687	658
Loans, net of allowance for loan losses	7,074,642	7,217,705
Derivative assets	15,589	7,219
Financial liabilities:
Deposits other than certificates of deposits	6,024,391	6,079,357
Certificates of deposit	646,616	632,744
Total deposits	6,671,007	6,712,101
Borrowings	1,626,529	1,739,102
Derivative liabilities	13,444	6,315
Agency Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Available for sale debt securities, at fair value	4,999	19,005
Investment securities held to maturity, fair value	4,844	4,221
Agency Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Agency Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Agency Obligations [Member] | Carrying Value [Member]
Financial assets:
Available for sale debt securities, at fair value	4,999	19,005
Investment securities held to maturity, fair value	4,987	4,308
Agency Obligations [Member] | Fair Value [Member]
Financial assets:
Available for sale debt securities, at fair value	4,999	19,005
Investment securities held to maturity, fair value	4,844	4,221
Mortgage-Backed Securities [Member]
Financial assets:
Available for sale debt securities, at fair value	1,019,126	988,367
Investment securities held to maturity, fair value	256	396
Mortgage-Backed Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Mortgage-Backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Available for sale debt securities, at fair value	1,019,126	988,367
Investment securities held to maturity, fair value	256	396
Mortgage-Backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Mortgage-Backed Securities [Member] | Carrying Value [Member]
Financial assets:
Available for sale debt securities, at fair value	1,019,126	988,367
Investment securities held to maturity, fair value	248	382
Mortgage-Backed Securities [Member] | Fair Value [Member]
Financial assets:
Available for sale debt securities, at fair value	1,019,126	988,367
Investment securities held to maturity, fair value	256	396
State And Municipal Obligations [Member]
Financial assets:
Available for sale debt securities, at fair value	3,318	3,388
Investment securities held to maturity, fair value	457,325	470,484
State And Municipal Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
State And Municipal Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Available for sale debt securities, at fair value	3,318	3,388
Investment securities held to maturity, fair value	457,325	470,484
State And Municipal Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
State And Municipal Obligations [Member] | Carrying Value [Member]
Financial assets:
Available for sale debt securities, at fair value	3,318	3,388
Investment securities held to maturity, fair value	458,624	462,942
State And Municipal Obligations [Member] | Fair Value [Member]
Financial assets:
Available for sale debt securities, at fair value	3,318	3,388
Investment securities held to maturity, fair value	457,325	470,484
Corporate Obligations [Member]
Financial assets:
Available for sale debt securities, at fair value	25,091	26,394
Investment securities held to maturity, fair value	9,760	9,938
Corporate Obligations [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Corporate Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets:
Available for sale debt securities, at fair value	25,091	26,394
Investment securities held to maturity, fair value	9,760	9,938
Corporate Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Corporate Obligations [Member] | Carrying Value [Member]
Financial assets:
Available for sale debt securities, at fair value	25,091	26,394
Investment securities held to maturity, fair value	9,966	10,020
Corporate Obligations [Member] | Fair Value [Member]
Financial assets:
Available for sale debt securities, at fair value	25,091	26,394
Investment securities held to maturity, fair value	$ 9,760	$ 9,938

Other Comprehensive (Loss) In55

Other Comprehensive (Loss) Income (Components of OCI) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive (loss) income, before tax	$ (4,368)	$ 2,104	$ (16,657)	$ 3,537
Total other comprehensive income (loss), tax effect	1,152	(842)	4,394	(1,417)
Total other comprehensive (loss) income	(3,216)	1,262	(12,263)	2,120
Unrealized gains and losses on securities available for sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net (losses) gains arising during the period, before tax	(4,670)	2,048	(17,763)	3,336
Reclassification adjustment for losses (gains) included in net income, before tax	0	0	0	0
Total other comprehensive (loss) income, before tax	(4,670)	2,048	(17,763)	3,336
Net (losses) gains arising during the period, tax effect	1,232	(820)	4,686	(1,337)
Reclassification adjustment for losses (gains) included in net income, tax effect	0	0	0	0
Total other comprehensive income (loss), tax effect	1,232	(820)	4,686	(1,337)
Net (losses) gains arising during the period, after tax	(3,438)	1,228	(13,077)	1,999
Reclassification adjustment for losses (gains) included in net income, after tax	0	0	0	0
Total other comprehensive (loss) income	(3,438)	1,228	(13,077)	1,999
Unrealized gains (losses) on derivatives (cash flow hedges) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive (loss) income, before tax	201	(5)	921	87
Total other comprehensive income (loss), tax effect	(53)	2	(243)	(35)
Total other comprehensive (loss) income	148	(3)	678	52
Post-retirement obligations [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive (loss) income, before tax	101	61	185	114
Total other comprehensive income (loss), tax effect	(27)	(24)	(49)	(45)
Total other comprehensive (loss) income	$ 74	$ 37	$ 136	$ 69

Other Comprehensive (Loss) In56

Other Comprehensive (Loss) Income (Components of AOCI) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 1,298,661	$ 1,251,781
Current period other comprehensive (loss) income	$ (3,216)	$ 1,262	(12,263)	2,120
Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01			0
Ending Balance	1,311,262	1,283,601	1,311,262	1,283,601
Unrealized gains on securities available for sale [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(13,115)	261	(3,292)	(510)
Current period other comprehensive (loss) income	(3,438)	1,228	(13,077)	1,999
Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01			(184)	0
Ending Balance	(16,553)	1,489	(16,553)	1,489
Post-retirement obligations [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(4,784)	(3,024)	(4,846)	(3,056)
Current period other comprehensive (loss) income	74	37	136	69
Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01			0	0
Ending Balance	(4,710)	(2,987)	(4,710)	(2,987)
Unrealized gains (losses) on derivatives (cash flow hedges) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	1,203	224	673	169
Current period other comprehensive (loss) income	148	(3)	678	52
Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01			0	0
Ending Balance	1,351	221	1,351	221
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(16,696)	(2,539)	(7,465)	(3,397)
Current period other comprehensive (loss) income	(3,216)	1,262	(12,263)	2,120
Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01			(184)	0
Ending Balance	$ (19,912)	$ (1,277)	$ (19,912)	$ (1,277)

Other Comprehensive (Loss) In57

Other Comprehensive (Loss) Income (Reclassifications Out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Compensation and employee benefits	$ 27,983	$ 26,910	$ 55,852	$ 53,758
Income tax expense	(4,568)	(10,451)	(10,929)	(18,819)
Net income	19,243	24,383	47,156	47,891
Reclassification adjustment [Member] | Post-retirement obligations [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Compensation and employee benefits	100	61	200	122
Income tax expense	(26)	(24)	(52)	(48)
Net income	$ 74	$ 37	$ 148	$ 74

Derivatives and Hedging Activ58

Derivatives and Hedging Activities (Narrative) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)counterpartyinstrument	Dec. 31, 2017USD ($)instrument
Derivative [Line Items]
Derivative instruments in accumulated other comprehensive income reclassified to interest expense	$ 561
Derivative liability, notional amount	$ 60,000
Counterparty | counterparty	5
Counterparty in liability position | counterparty	1
Derivative liabilities	$ 760
Collateral against obligations	$ 690
Derivatives Not Designated as a Hedging Instruments [Member] | Interest rate products [Member]
Derivative [Line Items]
Number of derivative instruments held (in instrument) | instrument	50	48
Derivative notional amount	$ 777,400	$ 718,500
Derivatives Not Designated as a Hedging Instruments [Member] | Credit contracts [Member]
Derivative [Line Items]
Number of derivative instruments held (in instrument) | instrument	3	2
Derivative notional amount	$ 29,700	$ 15,800
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Number of outstanding derivatives | instrument	2

Derivatives and Hedging Activ59

Derivatives and Hedging Activities (Fair Value) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Derivatives Not Designated as a Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 13,753	$ 6,304
Liability Derivatives	13,444	6,315
Derivatives Not Designated as a Hedging Instruments [Member] | Other Assets [Member] | Interest rate products [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	13,671	6,303
Derivatives Not Designated as a Hedging Instruments [Member] | Other Assets [Member] | Credit contracts [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	82	1
Derivatives Not Designated as a Hedging Instruments [Member] | Other Liabilities [Member] | Interest rate products [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	13,444	6,315
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	1,836	915
Liability Derivatives	0	0
Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest rate products [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	1,836	915
Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest rate products [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 0	$ 0

Derivatives and Hedging Activ60

Derivatives and Hedging Activities (Gains and Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
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	$ 17	$ (166)	$ 319	$ (391)
Derivatives Not Designated as a Hedging Instruments [Member] | Interest rate products [Member] | Other income (expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives for the three months ended	(64)	(166)	238	(392)
Derivatives Not Designated as a Hedging Instruments [Member] | Credit contracts [Member] | Other income (expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives for the three months ended	81	0	81	1
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives for the three months ended	74	(51)	80	(108)
Designated as Hedging Instrument [Member] | Interest rate products [Member] | Other income (expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives for the three months ended	$ 74	$ (51)	$ 80	$ (108)

Revenue Recognition (Summary of

Revenue Recognition (Summary of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue from Contract with Customer [Abstract]
Percentage of total revenue excluded from adoption of 606	86.00%	84.00%	87.00%	85.00%
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 9,398	$ 9,171	$ 18,514	$ 17,882
Total out-of-scope non-interest income	4,439	5,648	8,630	9,402
Total non-interest income	13,837	14,819	27,144	27,284
Wealth Management Fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4,602	4,509	9,002	8,722
Banking service charges and other fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4,796	4,662	9,512	9,160
Service charges on deposit accounts [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	3,240	3,168	6,554	6,314
Debit card and ATM fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 1,556	$ 1,494	$ 2,958	$ 2,846