Provident Financial Services (PFS) 10-Q 8 Nov 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Nov. 01, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	001-31566
Entity Registrant Name	PROVIDENT FINANCIAL SERVICES, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	42-1547151
Entity Address, Address Line One	239 Washington Street
Entity Address, City or Town	Jersey City
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	07302
City Area Code	732
Local Phone Number	590-9200
Title of 12(b) Security	Common
Trading Symbol	PFS
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		65,989,245
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001178970
Current Fiscal Year End Date	--12-31

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 178,573	$ 86,195
Short-term investments	82,287	56,466
Total cash and cash equivalents	260,860	142,661
Available for sale debt securities, at fair value	1,052,995	1,063,079
Held to maturity debt securities	461,738	479,425
Equity securities, at fair value	728	635
Federal Home Loan Bank stock	68,721	68,813
Loans	7,266,994	7,250,588
Less allowance for loan losses	57,344	55,562
Net loans	7,209,650	7,195,026
Foreclosed assets, net	1,534	1,565
Banking premises and equipment, net	55,119	58,124
Accrued interest receivable	29,091	31,475
Intangible assets	437,585	418,178
Bank-owned life insurance	195,451	193,085
Other assets	144,925	73,703
Total assets	9,918,397	9,725,769
Deposits:
Demand deposits	5,131,103	5,027,708
Savings deposits	985,575	1,051,922
Certificates of deposit of $100,000 or more	534,745	414,848
Other time deposits	309,948	335,644
Total deposits	6,961,371	6,830,122
Mortgage escrow deposits	25,972	25,568
Borrowed funds	1,380,063	1,442,282
Other liabilities	153,158	68,817
Total liabilities	8,520,564	8,366,789
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 65,760,468 shares outstanding at September 30, 2019 and 66,325,458 outstanding at December 31, 2018	832	832
Additional paid-in capital	1,028,131	1,021,533
Retained earnings	682,540	651,099
Accumulated other comprehensive income (loss)	6,762	(12,336)
Treasury stock	(292,868)	(272,470)
Unallocated common stock held by the Employee Stock Ownership Plan	(27,564)	(29,678)
Common stock acquired by the Directors’ Deferred Fee Plan	(4,001)	(4,504)
Deferred compensation – Directors’ Deferred Fee Plan	4,001	4,504
Total stockholders’ equity	1,397,833	1,358,980
Total liabilities and stockholders’ equity	$ 9,918,397	$ 9,725,769

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Held to maturity debt securities, fair value	$ 476,698	$ 479,740
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
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)	65,760,468	66,325,458

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest income:
Real estate secured loans	$ 56,402	$ 54,532	$ 167,051	$ 158,798
Commercial loans	20,104	20,230	63,788	58,706
Consumer loans	4,648	5,095	14,216	14,945
Available for sale debt securities, equity securities and Federal Home Loan Bank Stock	7,918	7,805	24,584	22,738
Held to maturity debt securities	3,075	3,149	9,408	9,447
Deposits, Federal funds sold and other short-term investments	879	450	2,038	1,273
Total interest income	93,026	91,261	281,085	265,907
Interest expense:
Deposits	11,730	7,856	33,940	21,087
Borrowed funds	7,768	7,619	22,055	21,477
Total interest expense	19,498	15,475	55,995	42,564
Net interest income	73,528	75,786	225,090	223,343
Provision for loan losses	500	1,000	10,200	21,900
Net interest income after provision for loan losses	73,028	74,786	214,890	201,443
Non-interest income:
Fees	7,634	7,455	20,617	20,706
Wealth management income	6,084	4,570	16,406	13,572
Bank-owned life insurance	1,272	2,083	4,253	4,640
Net gain on securities transactions	0	2	29	3
Other income	3,057	1,806	4,764	4,139
Total non-interest income	18,047	15,916	46,069	43,060
Non-interest expense:
Compensation and employee benefits	29,376	27,546	86,735	83,398
Net occupancy expense	6,413	5,924	19,629	19,052
Data processing expense	4,114	3,630	12,447	10,862
FDIC insurance	0	967	1,167	2,920
Amortization of intangibles	827	509	2,161	1,625
Advertising and promotion expense	1,098	949	3,059	2,763
Other operating expenses	7,910	7,134	22,650	21,755
Total non-interest expense	49,738	46,659	147,848	142,375
Income before income tax expense	41,337	44,043	113,111	102,128
Income tax expense	9,938	8,575	26,429	19,504
Net income	$ 31,399	$ 35,468	$ 86,682	$ 82,624
Basic earnings per share (usd per share)	$ 0.49	$ 0.55	$ 1.34	$ 1.27
Weighted average basic shares outstanding (in shares)	64,511,956	65,037,779	64,720,642	64,907,210
Diluted earnings per share (usd per share)	$ 0.49	$ 0.54	$ 1.34	$ 1.27
Weighted average diluted shares outstanding (in shares)	64,632,285	65,183,881	64,852,983	65,078,627

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 31,399	$ 35,468	$ 86,682	$ 82,624
Unrealized gains and losses on available for sale debt securities:
Net unrealized gains (losses) arising during the period	2,614	(4,820)	19,854	(17,897)
Reclassification adjustment for gains included in net income	0	0	0	0
Total	2,614	(4,820)	19,854	(17,897)
Unrealized gains on derivatives	137	46	(813)	724
Amortization related to post-retirement obligations	35	75	57	211
Total other comprehensive income (loss)	2,786	(4,699)	19,098	(16,962)
Total comprehensive income	$ 34,185	$ 30,769	$ 105,780	$ 65,662

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Unallocated ESOP Shares	Common Stock Acquired By Directors Deferred Fee Plan	Deferred Compensation DDFP
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	82,624			82,624
Other comprehensive income (loss), net of tax	(16,962)				(16,962)
Cash dividends paid	(41,139)			(41,139)
Effect of adopting Accounting Standards Update				184	(184)
Distributions from DDFP	120		120					503	(503)
Purchases of treasury stock	(175)					(175)
Purchase of employee restricted shares to fund statutory tax withholding	(1,851)					(1,851)
Shares issued dividend reinvestment plan	1,294		442			852
Stock option exercises	974		(347)			1,321
Allocation of ESOP shares	3,275		1,161				2,114
Allocation of SAP shares	4,627		4,627
Allocation of stock options	141		141
Ending Balance at Sep. 30, 2018	1,331,589	832	1,019,052	627,801	(24,611)	(259,760)	(31,725)	(4,672)	4,672
Beginning balance at Jun. 30, 2018	1,311,262	832	1,017,256	606,423	(19,912)	(260,908)	(32,429)	(4,840)	4,840
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	35,468			35,468
Other comprehensive income (loss), net of tax	(4,699)				(4,699)
Cash dividends paid	(14,090)			(14,090)
Distributions from DDFP	39		39					168	(168)
Purchases of treasury stock	(175)					(175)
Purchase of employee restricted shares to fund statutory tax withholding	(4)					(4)
Shares issued dividend reinvestment plan	435		137			298
Stock option exercises	767		(262)			1,029
Allocation of ESOP shares	1,070		366				704
Allocation of SAP shares	1,468		1,468
Allocation of stock options	48		48
Ending Balance at Sep. 30, 2018	1,331,589	832	1,019,052	627,801	(24,611)	(259,760)	(31,725)	(4,672)	4,672
Beginning balance at Dec. 31, 2018	1,358,980	832	1,021,533	651,099	(12,336)	(272,470)	(29,678)	(4,504)	4,504
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	86,682			86,682
Other comprehensive income (loss), net of tax	19,098				19,098
Cash dividends paid	(59,591)			(59,591)
Effect of adopting Accounting Standards Update	4,350			4,350	0
Distributions from DDFP	123		123					503	(503)
Purchases of treasury stock	(19,867)					(19,867)
Purchase of employee restricted shares to fund statutory tax withholding	(1,985)					(1,985)
Shares issued dividend reinvestment plan	1,764		545			1,219
Stock option exercises	139		(96)			235
Allocation of ESOP shares	3,121		1,007				2,114
Allocation of SAP shares	4,884		4,884
Allocation of stock options	135		135
Ending Balance at Sep. 30, 2019	1,397,833	832	1,028,131	682,540	6,762	(292,868)	(27,564)	(4,001)	4,001
Beginning balance at Jun. 30, 2019	1,391,446	832	1,025,855	666,415	3,976	(277,364)	(28,268)	(4,169)	4,169
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	31,399			31,399
Other comprehensive income (loss), net of tax	2,786				2,786
Cash dividends paid	(15,274)			(15,274)
Distributions from DDFP	38		38					168	(168)
Purchases of treasury stock	(15,817)					(15,817)
Purchase of employee restricted shares to fund statutory tax withholding	(32)					(32)
Shares issued dividend reinvestment plan	461		116			345
Allocation of ESOP shares	1,002		298				704
Allocation of SAP shares	1,778		1,778
Allocation of stock options	46		46
Ending Balance at Sep. 30, 2019	$ 1,397,833	$ 832	$ 1,028,131	$ 682,540	$ 6,762	$ (292,868)	$ (27,564)	$ (4,001)	$ 4,001

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income	$ 86,682	$ 82,624
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of intangibles	7,962	7,613
Provision for loan losses	10,200	21,900
Deferred tax benefit	(112)	(21,401)
Amortization of operating lease right-of-use assets	6,303	0
Income on Bank-owned life insurance	(4,253)	(4,640)
Net amortization of premiums and discounts on securities	5,619	6,614
Accretion of net deferred loan fees	(3,872)	(3,844)
Amortization of premiums on purchased loans, net	584	677
Net increase in loans originated for sale	(14,414)	(9,310)
Proceeds from sales of loans originated for sale	15,235	10,184
Proceeds from sales and paydowns of foreclosed assets	1,063	3,250
ESOP expense	3,121	3,275
Allocation of stock award shares	4,884	4,627
Allocation of stock options	135	141
Net gain on sale of loans	(821)	(1,125)
Net gain on securities transactions	(29)	(3)
Net gain on sale of premises and equipment	0	(25)
Net gain on sale of foreclosed assets	(182)	(713)
Decrease (increase) in accrued interest receivable	2,384	(138)
Increase in other assets	(50,146)	(5,825)
Increase in other liabilities	38,291	38,876
Net cash provided by operating activities	108,634	132,757
Cash flows from investing activities:
Proceeds from maturities, calls and paydowns of held to maturity debt securities	30,789	36,726
Purchases of held to maturity debt securities	(15,976)	(35,107)
Proceeds from maturities and paydowns of available for sale debt securities	151,632	155,494
Purchases of available for sale debt securities	(116,972)	(189,669)
Proceeds from redemption of Federal Home Loan Bank stock	125,894	109,929
Purchases of Federal Home Loan Bank stock	(125,802)	(100,654)
Net cash paid in acquisition	(15,022)	0
BOLI claim benefits received	1,891	0
Purchases of loans	0	(1,344)
Net (increase) decrease in loans	(13,967)	77,016
Proceeds from loans sold	0	23,417
Proceeds from sales of premises and equipment	0	25
Purchases of premises and equipment	(2,796)	(1,958)
Net cash provided by investing activities	19,671	73,875
Cash flows from financing activities:
Net increase in deposits	131,249	5,575
Increase (decrease) in mortgage escrow deposits	404	(420)
Cash dividends paid to stockholders	(59,591)	(41,139)
Shares issued dividend reinvestment plan	1,764	1,294
Purchase of treasury stock	(19,867)	(175)
Purchase of employee restricted shares to fund statutory tax withholding	(1,985)	(1,851)
Stock options exercised	139	974
Proceeds from long-term borrowings	1,009,000	610,000
Payments on long-term borrowings	(891,955)	(647,440)
Net decrease in short-term borrowings	(179,264)	(175,160)
Net cash used in financing activities	(10,106)	(248,342)
Net increase (decrease) in cash and cash equivalents	118,199	(41,710)
Cash and cash equivalents at beginning of period	142,661	190,834
Cash and cash equivalents at end of period	260,860	149,124
Cash paid during the period for:
Interest on deposits and borrowings	55,474	42,520
Income taxes	21,137	14,819
Non-cash investing activities:
Initial recognition of operating lease right-of-use assets	44,946	0
Initial recognition of operating lease liabilities	46,050	0
Transfer of loans receivable to foreclosed assets	850	1,673
Non-cash assets acquired:
Goodwill and other intangible assets, net	21,562	0
Other assets	71	0
Noncash or Part Noncash Acquisition, Value of Assets Acquired, Total	$ 21,633	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2019
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 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 nine months ended September 30, 2019 are not necessarily indicative of the results of operations that may be expected for all of 2019. 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. These unaudited consolidated financial statements should be read in conjunction with the December 31, 2018 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 nine months ended September 30, 2019 and 2018 (dollars in thousands, except per share amounts): Three months ended September 30, 2019 2018 Net Weighted Per Net Weighted Per Net income $ 31,399 $ 35,468 Basic earnings per share: Income available to common stockholders $ 31,399 64,511,956 $ 0.49 $ 35,468 65,037,779 $ 0.55 Dilutive shares 120,329 146,102 Diluted earnings per share: Income available to common stockholders $ 31,399 64,632,285 $ 0.49 $ 35,468 65,183,881 $ 0.54 Nine months ended September 30, 2019 2018 Net Weighted Per Net Weighted Per Net income $ 86,682 $ 82,624 Basic earnings per share: Income available to common stockholders $ 86,682 64,720,642 $ 1.34 $ 82,624 64,907,210 $ 1.27 Dilutive shares 132,341 171,417 Diluted earnings per share: Income available to common stockholders $ 86,682 64,852,983 $ 1.34 $ 82,624 65,078,627 $ 1.27 Anti-dilutive stock options and awards at September 30, 2019 and 2018, totaling 678,583 shares and 429,878 shares, respectively, were excluded from the earnings per share calculations.

Business Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Business Combinations	Business Combinations On April 1, 2019, Beacon Trust Company ("Beacon") completed its acquisition of certain assets of Tirschwell & Loewy, Inc. ("T&L"), a New York City-based independent registered investment adviser. Beacon is a wholly owned subsidiary of Provident Bank which, in turn, is wholly owned by the Company. This acquisition expanded the Company’s wealth management business by $822.4 million of assets under management at the time of acquisition. The acquisition was accounted for under the acquisition method of accounting. The Company recorded goodwill of $8.2 million, a customer relationship intangible of $12.6 million and $800,000 of other identifiable intangibles related to the acquisition. In addition, the Company recorded a contingent consideration liability at its fair value of $6.6 million. The contingent consideration arrangement requires the Company to pay additional cash consideration to T&L's former stakeholders over a three The calculation of goodwill is subject to change for up to one year after the closing date of the transaction as additional information relative to closing date estimates and uncertainties becomes available. As the Company finalizes its analysis of these assets, there may be adjustments to the recorded carrying values.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment SecuritiesAt September 30, 2019, the Company had $1.05 billion and $461.7 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 at September 30, 2019 totaled 88, compared with 509 at December 31, 2018. All securities with unrealized losses at September 30, 2019 were analyzed for OTTI. Based upon this analysis, the Company believes that, as of September 30, 2019, 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 September 30, 2019 and December 31, 2018 (in thousands): September 30, 2019 Amortized Gross Gross Fair Mortgage-backed securities $ 1,009,953 14,504 (916) 1,023,541 State and municipal obligations 3,920 168 — 4,088 Corporate obligations 25,034 344 (12) 25,366 $ 1,038,907 15,016 (928) 1,052,995 December 31, 2018 Amortized Gross Gross Fair Mortgage-backed securities $ 1,048,415 2,704 (16,150) 1,034,969 State and municipal obligations 2,828 84 — 2,912 Corporate obligations 25,039 268 (109) 25,198 $ 1,076,282 3,056 (16,259) 1,063,079 The amortized cost and fair value of available for sale debt securities at September 30, 2019, 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. September 30, 2019 Amortized Fair Due in one year or less $ — — Due after one year through five years 3,004 3,079 Due after five years through ten years 25,950 26,375 Due after ten years — — $ 28,954 29,454 Mortgage-backed securities totaling $1.01 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 nine months ended September 30, 2019 and 2018, no securities were sold or called from the available for sale debt securities portfolio. The following tables present the fair values and gross unrealized losses for available for sale debt securities with temporary impairment at September 30, 2019 and December 31, 2018 (in thousands): September 30, 2019 Unrealized Losses Less than 12 months 12 months or longer Total Fair Gross Fair Gross Fair Gross Mortgage-backed securities $ 98,998 (363) 69,399 (553) 168,397 (916) Corporate obligations 2,018 (12) — — 2,018 (12) $ 101,016 (375) 69,399 (553) 170,415 (928) December 31, 2018 Unrealized Losses Less than 12 months 12 months or longer Total Fair value Gross Fair value Gross Fair Gross Mortgage-backed securities $ 218,175 (2,173) 545,880 (13,977) 764,055 (16,150) Corporate obligations 7,897 (109) — — 7,897 (109) $ 226,072 (2,282) 545,880 (13,977) 771,952 (16,259) The number of available for sale debt securities in an unrealized loss position at September 30, 2019 totaled 45, compared with 175 at December 31, 2018. The decrease in the number of securities in an unrealized loss position at September 30, 2019 was due to lower current market interest rates compared to rates at December 31, 2018. All temporarily impaired securities were investment grade at September 30, 2019. At September 30, 2019, there was one private label mortgage-backed security in an unrealized loss position, with an amortized cost of $18,000 and an unrealized loss of $1,000. Based on its detailed review of the available for sale debt securities portfolio, the Company believes that as of September 30, 2019, 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 September 30, 2019, 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 September 30, 2019 and December 31, 2018 (in thousands): September 30, 2019 Amortized Gross Gross Fair Agency obligations $ 4,948 11 (11) 4,948 Mortgage-backed securities 134 3 — 137 State and municipal obligations 445,896 15,035 (122) 460,809 Corporate obligations 10,760 55 (11) 10,804 $ 461,738 15,104 (144) 476,698 December 31, 2018 Amortized Gross Gross Fair Agency obligations $ 4,989 1 (94) 4,896 Mortgage-backed securities 187 3 — 190 State and municipal obligations 463,801 4,329 (3,767) 464,363 Corporate obligations 10,448 1 (158) 10,291 $ 479,425 4,334 (4,019) 479,740 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 nine months ended September 30, 2019 and 2018. For the three and nine months ended September 30, 2019, proceeds from calls on securities in the held to maturity debt securities portfolio totaled $14.4 million and $26.6 million, respectively. As to these calls of securities, for the three months ended September 30, 2019, there were no gross gains and no gross losses, while for the nine months ended September 30, 2019, there were $29,000 of gross gains and no gross losses. For the three and nine months ended September 30, 2018, proceeds from calls of securities in the held to maturity debt securities portfolio totaled $10.4 million and $30.9 million, respectively. There were gross gains on calls of securities of $3,000 and $4,000 for the three and nine months ended September 30, 2018, respectively, and a gross loss of $1,000 for both the three and nine month periods. The amortized cost and fair value of investment securities in the held to maturity debt securities portfolio at September 30, 2019 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. September 30, 2019 Amortized Fair Due in one year or less $ 11,752 11,768 Due after one year through five years 99,205 101,073 Due after five years through ten years 252,531 261,072 Due after ten years 98,116 102,648 $ 461,604 476,561 Mortgage-backed securities totaling $134,000 at amortized cost and $137,000 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 September 30, 2019 and December 31, 2018 (in thousands): September 30, 2019 Unrealized Losses Less than 12 months 12 months or longer Total Fair Gross Fair Gross Fair Gross Agency obligations $ 3,348 (11) — — 3,348 (11) State and municipal obligations 12,352 (52) 2,097 (70) 14,449 (122) Corporate obligations 4,327 (11) — — 4,327 (11) $ 20,027 (74) 2,097 (70) 22,124 (144) December 31, 2018 Unrealized Losses Less than 12 months 12 months or longer Total Fair Gross Fair Gross Fair Gross Agency obligations $ — — 4,525 (94) 4,525 (94) State and municipal obligations 96,412 (918) 81,663 (2,849) 178,075 (3,767) Corporate obligations — — 9,004 (158) 9,004 (158) $ 96,412 (918) 95,192 (3,101) 191,604 (4,019) The number of held to maturity debt securities in an unrealized loss position at September 30, 2019 totaled 43, compared with 334 at December 31, 2018. The decrease in the number of securities in an unrealized loss position at September 30, 2019, was due to lower current market interest rates compared to rates at December 31, 2018. All temporarily impaired investment securities were investment grade at September 30, 2019.

Loans Receivable and Allowance

Loans Receivable and Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Loans Receivable and Allowance for Loan Losses	Loans Receivable and Allowance for Loan Losses Loans receivable at September 30, 2019 and December 31, 2018 are summarized as follows (in thousands): September 30, 2019 December 31, 2018 Mortgage loans: Residential $ 1,072,175 1,099,464 Commercial 2,437,117 2,299,313 Multi-family 1,298,630 1,339,677 Construction 399,501 388,999 Total mortgage loans 5,207,423 5,127,453 Commercial loans 1,659,866 1,695,021 Consumer loans 403,576 431,428 Total gross loans 7,270,865 7,253,902 Purchased credit-impaired ("PCI") loans 842 899 Premiums on purchased loans 2,716 3,243 Unearned discounts (26) (33) Net deferred fees (7,403) (7,423) Total loans $ 7,266,994 7,250,588 The following tables summarize the aging of loans receivable by portfolio segment and class of loans, excluding PCI loans (in thousands): September 30, 2019 30-59 Days 60-89 Days Non-accrual Recorded Total Past Current Total Loans Mortgage loans: Residential $ 6,013 2,333 6,456 — 14,802 1,057,373 1,072,175 Commercial — — 1,728 — 1,728 2,435,389 2,437,117 Multi-family — — — — — 1,298,630 1,298,630 Construction — — — — — 399,501 399,501 Total mortgage loans 6,013 2,333 8,184 — 16,530 5,190,893 5,207,423 Commercial loans 10 1,548 30,436 — 31,994 1,627,872 1,659,866 Consumer loans 716 556 1,361 — 2,633 400,943 403,576 Total gross loans $ 6,739 4,437 39,981 — 51,157 7,219,708 7,270,865 December 31, 2018 30-59 Days 60-89 Days Non-accrual Recorded Total Past Current Total Loans Receivable Mortgage loans: Residential $ 4,188 5,557 5,853 — 15,598 1,083,866 1,099,464 Commercial — — 3,180 — 3,180 2,296,133 2,299,313 Multi-family — — — — — 1,339,677 1,339,677 Construction — — — — — 388,999 388,999 Total mortgage loans 4,188 5,557 9,033 — 18,778 5,108,675 5,127,453 Commercial loans 425 13,565 15,391 — 29,381 1,665,640 1,695,021 Consumer loans 1,238 610 1,266 — 3,114 428,314 431,428 Total gross loans $ 5,851 19,732 25,690 — 51,273 7,202,629 7,253,902 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 $40.0 million and $25.7 million at September 30, 2019 and December 31, 2018, respectively. Included in non-accrual loans were $17.0 million and $11.1 million of loans which were less than 90 days past due at September 30, 2019 and December 31, 2018, respectively. There were no loans 90 days or greater past due and still accruing interest at September 30, 2019 or December 31, 2018. 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 a TDR. 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, Management makes an evaluation of all available collateral 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 September 30, 2019, there were 160 impaired loans totaling $71.3 million. Included in this total were 133 TDRs related to 129 borrowers totaling $44.2 million that were performing in accordance with their restructured terms and which continued to accrue interest at September 30, 2019. At December 31, 2018, there were 152 impaired loans totaling $50.7 million. Included in this total were 129 TDRs to 124 borrowers totaling $35.6 million that were performing in accordance with their restructured terms and which continued to accrue interest at December 31, 2018. The following table summarizes loans receivable by portfolio segment and impairment method, excluding PCI loans (in thousands): September 30, 2019 Mortgage Commercial Consumer Total Portfolio Individually evaluated for impairment $ 36,378 32,824 2,069 71,271 Collectively evaluated for impairment 5,171,045 1,627,042 401,507 7,199,594 Total gross loans $ 5,207,423 1,659,866 403,576 7,270,865 December 31, 2018 Mortgage Commercial Consumer Total Portfolio Individually evaluated for impairment $ 24,680 23,747 2,257 50,684 Collectively evaluated for impairment 5,102,773 1,671,274 429,171 7,203,218 Total gross loans $ 5,127,453 1,695,021 431,428 7,253,902 The allowance for loan losses is summarized by portfolio segment and impairment classification as follows (in thousands): September 30, 2019 Mortgage Commercial loans Consumer loans Total Individually evaluated for impairment $ 908 4,353 45 5,306 Collectively evaluated for impairment 24,173 25,990 1,875 52,038 Total gross loans $ 25,081 30,343 1,920 57,344 December 31, 2018 Mortgage Commercial loans Consumer Total Individually evaluated for impairment $ 1,026 92 47 1,165 Collectively evaluated for impairment 26,652 25,601 2,144 54,397 Total gross loans $ 27,678 25,693 2,191 55,562 Loan modifications to borrowers experiencing financial difficulties that are considered TDRs generally 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 nine months ended September 30, 2019 and 2018, along with their balances immediately prior to the modification date and post-modification as of September 30, 2019 and 2018 (dollars in thousands): For the three months ended September 30, 2019 September 30, 2018 Troubled Debt Restructurings Number of Pre-Modification Post-Modification Number of Pre-Modification Post-Modification ($ in thousands) Mortgage loans: Residential — $ — $ — 3 $ 693 $ 694 Total mortgage loans — — — 3 693 694 Commercial loans — — — 2 5,919 6,062 Consumer loans 1 20 16 1 336 335 Total restructured loans 1 $ 20 $ 16 6 $ 6,948 $ 7,091 For the nine months ended September 30, 2019 September 30, 2018 Troubled Debt Restructurings Number of Pre-Modification Post-Modification Number of Pre-Modification Post-Modification ($ in thousands) Mortgage loans: Residential 2 $ 749 $ 716 4 $ 811 $ 797 Commercial 1 14,010 14,010 — — — Total mortgage loans 3 14,759 14,726 4 811 797 Commercial loans 7 2,707 1,878 6 12,545 8,752 Consumer loans 1 20 16 1 336 335 Total restructured loans 11 $ 17,486 $ 16,620 11 $ 13,692 $ 9,884 All TDRs are impaired loans, which are individually evaluated for impairment. During the three and nine months ended September 30, 2019, $5.7 million and $7.7 million of charge-offs were recorded on collateral dependent impaired loans. During the three and nine months ended September 30, 2018, $6.3 million and $8.3 million of charge-offs were recorded on collateral dependent impaired loans, respectively. For the nine months ended September 30, 2019, the allowance for loan losses associated with the TDRs presented in the preceding tables totaled $141,000, while there was no allowance associated with TDR's for the three months ended September 30, 2019, respectively, and was included in the allowance for loan losses for loans individually evaluated for impairment. For the three and nine months ended September 30, 2019, the TDRs presented in the preceding tables had a weighted average modified interest rate of approximately 5.63% and 3.83%, respectively, compared to a weighted average rate of 5.38% and 3.98% prior to modification, for the three and nine months ended September 30, 2019, respectively. The following table presents loans modified as TDRs within the previous 12 months from September 30, 2019 and 2018, and for which there was a payment default (90 days or more past due) at the quarter ended September 30, 2019 and 2018. September 30, 2019 September 30, 2018 Troubled Debt Restructurings Subsequently Defaulted Number of Loans Outstanding Recorded Investment Number of Loans Outstanding Recorded ($ in thousands) Mortgage loans: Residential 1 $ 578 — $ — Total mortgage loans 1 578 — — Commercial loans — $ — 3 $ 1,344 Total restructured loans 1 $ 578 3 $ 1,344 There was one loan which had a payment default (90 days or more past due) for loans modified as TDRs within the 12 month period ending September 30, 2019 . There were three payment defaults (90 days or more past due) to one borrower for loans modified as TDRs within the 12 month period ending September 30, 2018. 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 $842,000 at September 30, 2019 and $899,000 at December 31, 2018. The activity in the allowance for loan losses by portfolio segment for the three and nine months ended September 30, 2019 and 2018 was as follows (in thousands): Three months ended September 30, Mortgage loans Commercial loans Consumer loans Total 2019 Balance at beginning of period $ 27,280 33,549 1,981 62,810 Provision (credited) charged to operations (2,092) 2,880 (288) 500 Recoveries of loans previously charged-off 24 126 343 493 Loans charged-off (131) (6,212) (116) (6,459) Balance at end of period $ 25,081 30,343 1,920 57,344 2018 Balance at beginning of period $ 27,161 29,494 2,164 58,819 Provision charged (credited) to operations 88 915 (3) 1,000 Recoveries of loans previously charged-off 303 36 297 636 Loans charged-off (57) (6,302) (186) (6,545) Balance at end of period $ 27,495 24,143 2,272 53,910 Nine months ended September 30, Mortgage Commercial Consumer Total 2019 Balance at beginning of period $ 27,678 25,693 2,191 55,562 Provision (credited) charged to operations (2,814) 13,337 (323) 10,200 Recoveries of loans previously charged-off 361 291 596 1,248 Loans charged-off (144) (8,978) (544) (9,666) Balance at end of period $ 25,081 30,343 1,920 57,344 2018 Balance at beginning of period $ 28,052 29,814 2,329 60,195 Provision (credited) charged to operations (716) 22,740 (124) 21,900 Recoveries of loans previously charged-off 435 268 689 1,392 Loans charged-off (276) (28,679) (622) (29,577) Balance at end of period $ 27,495 24,143 2,272 53,910 The following table presents loans individually evaluated for impairment by class and loan category, excluding PCI loans (in thousands): September 30, 2019 December 31, 2018 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 $ 13,974 11,170 — 11,393 874 15,013 12,005 — 12,141 594 Commercial — — — — — 1,550 1,546 — 1,546 — Total 13,974 11,170 — 11,393 874 16,563 13,551 — 13,687 594 Commercial loans 7,508 6,274 — 6,564 52 21,746 16,254 — 17,083 328 Consumer loans 1,714 1,159 — 1,357 59 1,871 1,313 — 1,386 90 Total impaired loans $ 23,196 18,603 — 19,314 985 40,180 31,118 — 32,156 1,012 Loans with an allowance recorded Mortgage loans: Residential $ 10,640 10,177 800 10,262 322 10,573 10,090 954 10,186 425 Commercial 15,030 15,031 108 15,046 427 1,039 1,039 72 1,052 53 Total 25,670 25,208 908 25,308 749 11,612 11,129 1,026 11,238 478 Commercial loans 27,674 26,550 4,353 27,851 295 7,493 7,493 92 9,512 435 Consumer loans 921 910 45 725 36 954 944 47 962 40 Total impaired loans $ 54,265 52,668 5,306 53,884 1,080 20,059 19,566 1,165 21,712 953 Total impaired loans Mortgage loans: Residential $ 24,614 21,347 800 21,655 1,196 25,586 22,095 954 22,327 1,019 Commercial 15,030 15,031 108 15,046 427 2,589 2,585 72 2,598 53 Total 39,644 36,378 908 36,701 1,623 28,175 24,680 1,026 24,925 1,072 Commercial loans 35,183 32,824 4,353 34,415 347 29,239 23,747 92 26,595 763 Consumer loans 2,635 2,069 45 2,082 95 2,825 2,257 47 2,348 130 Total impaired loans $ 77,462 71,271 5,306 73,198 2,065 60,239 50,684 1,165 53,868 1,965 Specific allocations of the allowance for loan losses attributable to impaired loans totaled $5.3 million at September 30, 2019 and $1.2 million at December 31, 2018. At September 30, 2019 and December 31, 2018, impaired loans for which there was no related allowance for loan losses totaled $18.6 million and $31.1 million, respectively. The average balance of impaired loans for the nine months ended September 30, 2019 and December 31, 2018 was $73.2 million and $53.9 million, respectively. Management 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 September 30, 2019 Residential Commercialmortgage Multi-family Construction Total Commercial Consumer Total loans Special mention $ 1,804 38,125 — — 39,929 79,721 458 120,108 Substandard 8,394 10,708 — 6,181 25,283 64,151 1,811 91,245 Doubtful — — — — — 865 — 865 Loss — — — — — — — — Total classified and criticized 10,198 48,833 — 6,181 65,212 144,737 2,269 212,218 Pass/Watch 1,061,977 2,388,284 1,298,630 393,320 5,142,211 1,515,129 401,307 7,058,647 Total $ 1,072,175 2,437,117 1,298,630 399,501 5,207,423 1,659,866 403,576 7,270,865 At December 31, 2018 Residential Commercialmortgage Multi-family Construction Total Commercial Consumer Total loans Special mention $ 5,071 14,496 228 — 19,795 67,396 610 87,801 Substandard 7,878 13,292 — 6,181 27,351 45,180 1,711 74,242 Doubtful — — — — — 923 — 923 Loss — — — — — — — — Total classified and criticized 12,949 27,788 228 6,181 47,146 113,499 2,321 162,966 Pass/Watch 1,086,515 2,271,525 1,339,449 382,818 5,080,307 1,581,522 429,107 7,090,936 Total $ 1,099,464 2,299,313 1,339,677 388,999 5,127,453 1,695,021 431,428 7,253,902

Deposits

Deposits	9 Months Ended
	Sep. 30, 2019
Banking and Thrift [Abstract]
Deposits	Deposits Deposits at September 30, 2019 and December 31, 2018 are summarized as follows (in thousands): September 30, 2019 December 31, 2018 Savings $ 985,575 1,051,922 Money market 1,593,681 1,496,310 NOW 1,853,650 2,049,645 Non-interest bearing 1,683,772 1,481,753 Certificates of deposit 844,693 750,492 Total deposits $ 6,961,371 6,830,122

Components of Net Periodic Bene

Components of Net Periodic Benefit Cost	9 Months Ended
	Sep. 30, 2019
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 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 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 Net periodic (decrease) increase in benefit cost for pension benefits and other post-retirement benefits for the three and nine months ended September 30, 2019 and 2018 includes the following components (in thousands): Three months ended September 30, Nine months ended September 30, Pension benefits Other post-retirement benefits Pension benefits Other post-retirement benefits 2019 2018 2019 2018 2019 2018 2019 2018 Service cost $ — — 20 29 $ — — 60 87 Interest cost 299 273 209 196 899 821 628 590 Expected return on plan assets (640) (693) — — (1,922) (2,079) — — Amortization of prior service cost — — — — — — — — Amortization of the net loss (gain) 254 199 (206) (99) 762 597 (620) (297) Net periodic benefit (decrease) increase in benefit cost $ (87) (221) 23 126 $ (261) (661) 68 380 In its consolidated financial statements for the year ended December 31, 2018, the Company previously disclosed that it does not expect to contribute to the pension plan in 2019. As of September 30, 2019, no contributions have been made to the pension plan. The net periodic benefit (decrease) increase in benefit cost for pension benefits and other post-retirement benefits for the three and nine months ended September 30, 2019 were calculated using the January 1, 2019 pension and other post-retirement benefits actuarial valuations.

Impact of Recent Accounting Pro

Impact of Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2019
Accounting Changes and Error Corrections [Abstract]
Impact of Recent Accounting Pronouncements	Impact of Recent Accounting Pronouncements Accounting Pronouncements Adopted in 2019 In October 2018, the Financial Accounting Standards Board ("FASB") issued ASU No. 2018-16, “Derivatives and Hedging (Topic 815) – Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes.” This ASU permits the use of the OIS rate based upon SOFR as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815 in addition to the UST, the LIBOR swap rate, the OIS rate based on the Fed Funds Effective Rate, and the SIFMA Municipal Swap Rate. The amendments in ASU 2018-16 are required to be adopted concurrently with ASU 2017-12, " Derivatives and Hedging: Targeted Improvements to Accounting for Hedging," which was effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. ASU 2018-16 should be adopted on a prospective basis for qualifying new or redesignated hedging relationships entered into on or after the date of adoption. The Company adopted this guidance effective January 1, 2019. The adoption of this guidance had no impact on the Company’s consolidated financial statements. 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 was effective for public business entities for fiscal years beginning after December 15, 2018. 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 adopted this guidance effective January 1, 2019. The adoption of this guidance had no impact 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. This ASU was effective for fiscal years beginning after December 15, 2018, including interim periods within the reporting period, with early adoption permitted. The Company adopted this guidance effective January 1, 2019. The adoption of this guidance had no impact on the Company’s consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842).” This ASU requires all lessees to recognize a lease liability and a right-of-use asset, measured at the present value of the future minimum lease payments, at the lease commencement date. Lessor accounting remains largely unchanged under the new guidance. The guidance is effective for fiscal years beginning after December 15, 2018, including interim reporting periods within that reporting period, with early adoption permitted. A modified retrospective approach must be applied for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. In July 2018, the FASB issued ASU No. 2018-11, “Leases - Targeted Improvements” to provide entities with relief from the costs of implementing certain aspects of ASU No. 2016-02. Specifically, under the amendments in ASU 2018-11: (1) entities may elect not to recast the comparative periods presented when transitioning to the new leasing standard, and (2) lessors may elect not to separate lease and non-lease components when certain conditions are met. The amendments have the same effective date as ASU 2016-02. 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 has identified the inventory of leases and actively accumulated the requisite lease data necessary to apply the guidance. Also, the working group purchased and implemented a software platform to properly record and track all leases, monitor right-of-use assets and lease liabilities and support all accounting and disclosure requirements of the guidance. The Company adopted both ASU No. 2016-02 and ASU No. 2018-11 effective January 1, 2019 and elected to apply the guidance as of the beginning of the period of adoption (January 1, 2019) and not restate comparative periods. The Company also elected certain optional practical expedients, which allow the Company to forego a reassessment of (1) whether any expired or existing contracts are or contain leases, (2) the lease classification for any expired or existing leases, and (3) the initial direct costs for any existing leases. The adoption of the new standard resulted in the Company recording a right-of-use and an additional lease liability on its consolidated statement of financial condition of $44.9 million and $46.1 million, respectively, based on the present value of the expected remaining lease payments at January 1, 2019. It also resulted in additional footnote disclosures (see Note 12 - "Leases"). Accounting Pronouncements Not Yet Adopted In April 2019, the FASB issued ASU No. 2019-04, "Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments" which clarifies and improves areas of guidance related to the recently issued standards on credit losses, hedging, recognition and measurement. The most significant provisions of the ASU relate to how companies will estimate expected credit losses under Topic 326 by incorporating (1) expected recoveries of financial assets, including recoveries of amounts expected to be written off and those previously written off, and (2) clarifying that contractual extensions or renewal options that are not unconditionally cancellable by the lender are considered when determining the contractual term over which expected credit losses are measured. ASU No. 2019-04 is effective for reporting periods beginning January 1, 2020. The Company continues to assess the impact that the guidance will have on the Company’s consolidated financial statements. In May 2019, the FASB issued ASU No. 2019-05, “Financial Instruments - Credit Losses (Topic 326); Targeted Transition Relief.” This ASU allows entities to irrevocably elect, upon adoption of ASU 2016-13, the fair value option on financial instruments that (1) were previously recorded at amortized cost and (2) are within the scope of ASC 326-20 if the instruments are eligible for the fair value option under ASC 825-10. The fair value option election does not apply to held-to-maturity debt securities. Entities are required to make this election on an instrument-by-instrument basis. ASU 2019-05 has the same effective date as ASU 2016-13 (i.e., the first quarter of 2020). The Company continues to assess the impact that the guidance will have on the Company’s consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, “Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement.” This ASU eliminates, adds and modifies certain disclosure requirements for fair value measurements. Among the changes, entities will no longer be required to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but will be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. ASU No. 2018-13 is effective for interim and annual reporting periods beginning after December 15, 2019; early adoption is permitted. Entities are also allowed to elect early adoption of the eliminated or modified disclosure requirements and delay adoption of the new disclosure requirements until their effective date. The Company does not expect the adoption of this guidance 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

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2019
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, Management 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 the 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 September 30, 2019 and December 31, 2018. 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 whom 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 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 Management 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, Management compares the prices received from the pricing service to a secondary pricing source. Additionally, Management 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 generally not 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 statements 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. For derivatives designated and that qualify as cash flow hedges of interest rate risk, the 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. These derivatives were used to hedge the variable cash outflows associated with Federal Home Loan Bank borrowings. 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 September 30, 2019 and December 31, 2018. 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%. Management 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 September 30, 2019 and December 31, 2018. The following tables present the assets and liabilities reported on the consolidated statements of financial condition at their fair values as of September 30, 2019 and December 31, 2018, by level within the fair value hierarchy: Fair Value Measurements at Reporting Date Using: (In thousands) September 30, 2019 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: Mortgage-backed securities $ 1,023,541 — 1,023,541 — State and municipal obligations 4,088 — 4,088 — Corporate obligations 25,366 — 25,366 — Total available for sale debt securities $ 1,052,995 — 1,052,995 — Equity securities 728 728 — — Derivative assets 54,743 — 54,743 — $ 1,108,466 728 1,107,738 — Derivative liabilities $ 54,838 — 54,838 — Measured on a non-recurring basis: Loans measured for impairment based on the fair value of the underlying collateral $ 19,025 — — 19,025 Foreclosed assets 1,534 — — 1,534 $ 20,559 — — 20,559 Fair Value Measurements at Reporting Date Using: (In thousands) December 31, 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: Mortgage-backed securities $ 1,034,969 — 1,034,969 — State and municipal obligations 2,912 — 2,912 — Corporate obligations 25,198 — 25,198 — Total available for sale debt securities $ 1,063,079 — 1,063,079 — Equity Securities 635 635 — — Derivative assets 15,634 — 15,634 — $ 1,079,348 635 1,078,713 — Derivative liabilities $ 14,766 — 14,766 — Measured on a non-recurring basis: Loans measured for impairment based on the fair value of the underlying collateral $ 4,285 — — 4,285 Foreclosed assets 1,565 — — 1,565 $ 5,850 — — 5,850 There were no transfers between Level 1, Level 2 and Level 3 during the three and nine months ended September 30, 2019. 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. Included in cash and cash equivalents at September 30, 2019 and December 31, 2018 was $27.3 million and $35.0 million, respectively, representing reserves required by banking regulations. 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 whom 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 to comparable securities. Management evaluates the quality of Level 2 matrix pricing through comparison to similar assets with greater liquidity and evaluation of projected cash flows. As management 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, management compares the prices received from the pricing service to a secondary pricing source. Additionally, management 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 generally not 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 September 30, 2019 and December 31, 2018. Fair values are presented by level within the fair value hierarchy. Fair Value Measurements at September 30, 2019 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 $ 260,860 260,860 260,860 — — Available for sale debt securities: Mortgage-backed securities 1,023,541 1,023,541 — 1,023,541 — State and municipal obligations 4,088 4,088 — 4,088 — Corporate obligations 25,366 25,366 — 25,366 — Total available for sale debt securities $ 1,052,995 1,052,995 — 1,052,995 — Held to maturity debt securities: Agency obligations 4,948 4,948 4,948 — — Mortgage-backed securities 134 137 — 137 — State and municipal obligations 445,896 460,809 — 460,809 — Corporate obligations 10,760 10,804 — 10,804 — Total held to maturity debt securities $ 461,738 476,698 4,948 471,750 — FHLBNY stock 68,721 68,721 68,721 — — Equity Securities 728 728 728 — — Loans, net of allowance for loan losses 7,209,650 7,260,050 — — 7,260,050 Derivative assets 54,743 54,743 — 54,743 — Financial liabilities: Deposits other than certificates of deposits $ 6,116,678 6,116,678 6,116,678 — — Certificates of deposit 844,693 844,095 — 844,095 — Total deposits $ 6,961,371 6,960,773 6,116,678 844,095 — Borrowings 1,380,063 1,382,650 — 1,382,650 — Derivative liabilities 54,838 54,838 — 54,838 — Fair Value Measurements at December 31, 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 $ 142,661 142,661 142,661 — — Available for sale debt securities: Mortgage-backed securities 1,034,969 1,034,969 — 1,034,969 — State and municipal obligations 2,912 2,912 — 2,912 — Corporate obligations 25,198 25,198 — 25,198 — Total available for sale debt securities $ 1,063,079 1,063,079 — 1,063,079 — Held to maturity debt securities: Agency obligations $ 4,989 4,896 4,896 — — Mortgage-backed securities 187 190 — 190 — State and municipal obligations 463,801 464,363 — 464,363 — Corporate obligations 10,448 10,291 — 10,291 — Total held to maturity debt securities $ 479,425 479,740 4,896 474,844 — FHLBNY stock 68,813 68,813 68,813 — — Equity Securities 635 635 635 — — Loans, net of allowance for loan losses 7,195,026 7,104,380 — — 7,104,380 Derivative assets 15,634 15,634 — 15,634 — Financial liabilities: Deposits other than certificates of deposits $ 6,079,630 6,079,630 6,079,630 — — Certificates of deposit 750,492 746,753 — 746,753 — Total deposits $ 6,830,122 6,826,383 6,079,630 746,753 — Borrowings 1,442,282 1,431,001 — 1,431,001 — Derivative liabilities 14,766 14,766 — 14,766 —

Other Comprehensive (Loss) Inco

Other Comprehensive (Loss) Income	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Other Comprehensive (Loss) Income	Other Comprehensive Income (Loss) The following table presents the components of other comprehensive income (loss), both gross and net of tax, for the three and nine months ended September 30, 2019 and 2018 (in thousands): Three months ended September 30, 2019 2018 Before Tax After Before Tax After Components of Other Comprehensive Income: Unrealized gains and losses on available for sale debt securities: Net unrealized gains (losses) arising during the period $ 3,594 (980) 2,614 (6,547) 1,727 (4,820) Reclassification adjustment for gains included in net income — — — — — — Total 3,594 (980) 2,614 (6,547) 1,727 (4,820) Unrealized gains on derivatives (cash flow hedges) 188 (51) 137 62 (16) 46 Amortization related to post-retirement obligations 48 (13) 35 100 (25) 75 Total other comprehensive income (loss) $ 3,830 (1,044) 2,786 (6,385) 1,686 (4,699) Nine months ended September 30, 2019 2018 Before Tax After Before Tax After Components of Other Comprehensive Income: Unrealized gains and losses on available for sale debt securities: Net unrealized gains (losses) arising during the period $ 27,291 (7,437) 19,854 (24,310) 6,413 (17,897) Reclassification adjustment for gains included in net income — — — — — — Total 27,291 (7,437) 19,854 (24,310) 6,413 (17,897) Unrealized (losses) gains on Derivatives (cash flow hedges) (1,119) 306 (813) 985 (261) 724 Amortization related to post-retirement obligations 78 (21) 57 283 (72) 211 Total other comprehensive income (loss) $ 26,250 (7,152) 19,098 (23,042) 6,080 (16,962) The following tables present the changes in the components of accumulated other comprehensive income (loss), net of tax, for the three and nine months ended September 30, 2019 and 2018 (in thousands): Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax 2019 2018 Unrealized Post- Retirement Unrealized (Losses) Gains on Derivatives (cash flow hedges) Accumulated Unrealized Post- Retirement Unrealized Gains on Derivatives (cash flow hedges) Accumulated Balance at $ 7,635 (3,603) (56) 3,976 (16,553) (4,710) 1,351 (19,912) Current - period other comprehensive income (loss) 2,614 35 137 2,786 (4,820) 75 46 (4,699) Balance at September 30, $ 10,249 (3,568) 81 6,762 (21,373) (4,635) 1,397 (24,611) Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax 2019 2018 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, $ (9,605) (3,625) 894 (12,336) (3,292) (4,846) 673 (7,465) Current - period other comprehensive income (loss) 19,854 57 (813) 19,098 (17,897) 211 724 (16,962) Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01 $ — — — — (184) — — (184) Balance at September 30, $ 10,249 (3,568) 81 6,762 (21,373) (4,635) 1,397 (24,611) The following tables summarize the reclassifications from accumulated other comprehensive income (loss) to the consolidated statements of income for the three and nine months ended September 30, 2019 and 2018 (in thousands): Reclassifications From Accumulated Other Comprehensive Amount reclassified from AOCI for the three months ended September 30, Affected line item in the Consolidated 2019 2018 Details of AOCI: Post-retirement obligations: Amortization of actuarial losses $ 48 100 Compensation and employee benefits (1) (13) (25) Income tax expense Total reclassification $ 35 75 Net of tax Reclassifications From Accumulated Other Comprehensive Amount reclassified from AOCI for the nine months ended September 30, Affected line item in the Consolidated 2019 2018 Details of AOCI: Post-retirement obligations: Amortization of actuarial losses $ 142 300 Compensation and employee benefits (1) (39) (78) Income tax expense Total reclassification $ 103 222 Net of tax (1) This item is included in the computation of net periodic benefit cost. See Note 6. Components of Net Periodic Benefit Cost.

Derivatives and Hedging Activit

Derivatives and Hedging Activities	9 Months Ended
	Sep. 30, 2019
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 the 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. As the Company has not elected to apply hedge accounting and these interest rate swaps 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 September 30, 2019 and December 31, 2018, the Company had 82 and 62 interest rate swaps, respectively, with aggregate notional amounts of $1.41 billion and $1.01 billion, respectively. The Company periodically enters into risk participation agreements ("RPAs") with the Company functioning as either the lead institution, or as a participant when another company is the lead institution on a commercial loan. These RPA's are entered into to manage the credit exposure on interest rate contracts associated with these loan participation agreements. Under the RPA's, the Company will either receive or make a payment if a borrower defaults on the related interest rate contract. At September 30, 2019 and December 31, 2018, the Company had 13 and 7 credit contracts, respectively, with aggregate notional amounts of $105.0 million and $66.8 million, respectively, from participations in interest rate swaps as part of these loan participation arrangements. At September 30, 2019 and December 31, 2018, the fair value of these credit derivatives were $61,000 and $251,000, respectively. 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. Changes in the fair value of derivatives designated and that qualify as cash flow hedges of interest rate risk 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 nine months ended September 30, 2019 and 2018, such derivatives were used to hedge the variable cash outflows associated with Federal Home Loan Bank borrowings. 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 borrowings. During the next twelve months, the Company estimates that $295,000 will be reclassified as an increase to interest expense. As of September 30, 2019, the Company had five outstanding interest rate derivatives with an aggregate notional amount of $130.0 million that were designated as a cash flow hedge of interest rate risk. The tables 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 September 30, 2019 and December 31, 2018 (in thousands): At September 30, 2019 Asset Derivatives Liability Derivatives Consolidated Statements of Financial Condition Fair Consolidated Statements of Financial Condition Fair Derivatives not designated as a hedging instrument: Interest rate products Other assets $ 54,571 Other liabilities 54,838 Credit contracts Other assets 61 Other liabilities — Total derivatives not designated as a hedging instrument $ 54,632 54,838 Derivatives designated as a hedging instrument: Interest rate products Other assets $ 111 Other liabilities — Total derivatives designated as a hedging instrument $ 111 — At December 31, 2018 Asset Derivatives Liability Derivatives Consolidated Statements of Financial Condition Fair Consolidated Statements of Financial Condition Fair Derivatives not designated as a hedging instrument: Interest rate products Other assets $ 14,154 Other liabilities 14,766 Credit contracts Other assets 251 Other liabilities — Total derivatives not designated as a hedging instrument $ 14,405 14,766 Derivatives designated as a hedging instrument: Interest rate products Other assets $ 1,229 Other liabilities — Total derivatives designated as a hedging instrument $ 1,229 — The tables below present the effect of the Company’s derivative financial instruments on the Consolidated Statements of Income during the three and nine months ended September 30, 2019 and 2018 (in thousands). Gain (loss) recognized in income on derivatives for the three months ended Consolidated Statements of Income September 30, 2019 September 30, 2018 Derivatives not designated as a hedging instrument: Interest rate products Other income $ 2,307 27 Credit contracts Other income (71) (145) Total $ 2,236 (118) Derivatives designated as a hedging instrument: Interest rate products Interest expense $ 157 105 Total $ 157 105 Gain (loss) recognized in income on derivatives for the nine months ended Consolidated Statements of Income September 30, 2019 September 30, 2018 Derivatives not designated as a hedging instrument: Interest rate products Other income $ 212 265 Credit contracts Other income (56) (64) Total $ 156 201 Derivatives designated as a hedging instrument: Interest rate products Interest expense $ 466 (185) Total $ 466 (185) The Company has agreements with certain of its dealer counterparties which contain a provision that if the Company defaults on any of its indebtedness, including a 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 which contain a provision that if the Company fails to maintain its status as a well or 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 September 30, 2019, the Company had four dealer counterparties. The Company had a net liability position with respect to all four of the counterparties. The termination value for this net liability position, which includes accrued interest, was $54.7 million at September 30, 2019. The Company has minimum collateral posting thresholds with certain of its derivative counterparties, and has posted collateral of $54.4 million against its obligations under these agreements. If the Company had breached any of these provisions at September 30, 2019, it could have been required to settle its obligations under the agreements at the termination value.

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition The Company generates revenue from several business channels. The guidance in ASU 2014-09, Revenue from Contracts with Customers (Topic 606) 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 and nine months ended September 30, 2019, the out-of-scope revenue related to financial instruments was 83.8% and 85.9% of the Company's total revenue, respectively, compared to 85.1% and 86.1% for the three and nine months ended September 30, 2018, respectively. Revenue-generating activities that are within the scope of Topic 606, are components of non-interest income. These revenue streams are generally classified into two categories: wealth management revenue and banking service charges and other fees. The following table presents non-interest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the three and nine months ended September 30, 2019 and 2018: Three months ended September 30, Nine months ended September 30, (in-thousands) 2019 2018 2019 2018 Non-interest income In-scope of Topic 606: Wealth management fees $ 6,084 4,570 16,406 13,572 Banking service charges and other fees: Service charges on deposit accounts 3,386 3,356 9,853 9,910 Debit card and ATM fees 1,474 1,486 4,271 4,444 Total banking service charges and other fees 4,860 4,842 14,124 14,354 Total in-scope non-interest income 10,944 9,412 30,530 27,926 Total out-of-scope non-interest income 7,103 6,504 15,539 15,134 Total non-interest income $ 18,047 15,916 46,069 43,060 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. The fee is generally based upon the average market value of the assets under management ("AUM") for the month and the applicable fee rate. For customers acquired in the recently completed T&L transaction, the fee is based upon AUM at the end of the preceding quarter and the applicable fee rate. The monthly accrual of wealth management fees is recorded in other assets on the Company's Consolidated Statements of Financial Condition. Fees are received from the customer either on a monthly or quarterly basis. The Company does not earn performance-based incentives. Other optional services such as tax return preparation, financial planning 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.

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Leases	Leases On January 1, 2019, the Company adopted ASU 2016-02, "Leases" (Topic 842) and all subsequent ASU's that modified Topic 842. For the Company, Topic 842 primarily affected the accounting treatment for operating lease agreements in which the Company is the lessee. The Company elected the modified retrospective transition option effective with the period of adoption, elected not to recast comparative periods presented when transitioning to the new leasing standard and adjustments, if required, are made at the beginning of the period through a cumulative-effect adjustment to opening retained earnings. The Company also elected practical expedients, which allowed the Company to forego a reassessment of (1) whether any expired or existing contracts are or contain leases, (2) the lease classification for any expired or existing leases, and (3) the initial direct costs for any existing leases. The adoption of the new standard resulted in the Company recording a right-of-use asset and an operating lease liability of $44.9 million and $46.1 million, respectively, based on the present value of the expected remaining lease payments at January 1, 2019. Also, on January 1, 2019, the Company had $5.9 million of net deferred gains associated with several sale and leaseback transactions executed prior to the adoption of ASU 2016-02. In accordance with the guidance, these net deferred gains were adjusted, net of tax, as a cumulative-effect adjustment to opening retained earnings. All of the leases in which the Company is the lessee are classified as operating leases and are primarily comprised of real estate property for branches and administrative offices with terms extending through 2040. The following table represents the consolidated statements of financial condition classification of the Company’s right-of use-assets and lease liabilities at September 30, 2019 (in thousands): Classification September 30, 2019 Lease Right-of-Use Assets: Operating lease right-of-use assets Other assets $ 43,483 Lease Liabilities: Operating lease liabilities Other liabilities $ 44,562 The calculated amount of the right-of-use assets and lease liabilities in the table above are impacted by the length of the lease term and the discount rate used to present value the minimum lease payments. The Company’s lease agreements often include one or more options to renew at the Company’s discretion. If at lease inception the Company considers the exercising of a renewal option to be reasonably certain, the Company will include the extended term in the calculation of the right-of-use asset and lease liability. Generally, the Company considers the first renewal option to be reasonably certain and includes it in the calculation of the right-of use asset and lease liability. Regarding the discount rate, Topic 842 requires the use of the rate implicit in the lease whenever this rate is readily determinable. As this rate is rarely determinable, the Company utilizes its incremental borrowing rate at lease inception based upon the term of the lease. For operating leases existing prior to January 1, 2019, the rate for the remaining lease term as of January 1, 2019 was applied. At September 30, 2019, the weighted-average remaining lease term and the weighted-average discount rate for the Company's operating leases were 9.6 years and 3.45%, respectively. The following table represents lease costs and other lease information for the Company's operating leases. The variable lease cost primarily represents variable payments such as common area maintenance and utilities (in thousands): (in-thousands) Three months ended September 30, 2019 Nine months ended September 30, 2019 Lease Costs Operating lease cost $ 2,127 $ 6,303 Variable lease cost 727 2,083 Total Lease Cost $ 2,854 $ 8,386 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 6,179 During the three months ended September 30, 2019, the Company did not enter into any new lease obligations. During the nine months ended September 30, 2019, the Company entered into one new lease obligation related to the T&L acquisition. The Company recorded a $1.9 million right-of-use asset for this lease obligation. Future minimum payments for operating leases with initial or remaining terms of one year or more as of September 30, 2019 were as follows: (in-thousands) Operating Leases Twelve months ended: Remainder of 2019 $ 2,125 2020 8,316 2021 6,064 2022 5,263 2023 4,752 Thereafter 26,541 Total future minimum lease payments 53,061 Amounts representing interest 8,499 Present value of net future minimum lease payments $ 44,562
Leases	Leases On January 1, 2019, the Company adopted ASU 2016-02, "Leases" (Topic 842) and all subsequent ASU's that modified Topic 842. For the Company, Topic 842 primarily affected the accounting treatment for operating lease agreements in which the Company is the lessee. The Company elected the modified retrospective transition option effective with the period of adoption, elected not to recast comparative periods presented when transitioning to the new leasing standard and adjustments, if required, are made at the beginning of the period through a cumulative-effect adjustment to opening retained earnings. The Company also elected practical expedients, which allowed the Company to forego a reassessment of (1) whether any expired or existing contracts are or contain leases, (2) the lease classification for any expired or existing leases, and (3) the initial direct costs for any existing leases. The adoption of the new standard resulted in the Company recording a right-of-use asset and an operating lease liability of $44.9 million and $46.1 million, respectively, based on the present value of the expected remaining lease payments at January 1, 2019. Also, on January 1, 2019, the Company had $5.9 million of net deferred gains associated with several sale and leaseback transactions executed prior to the adoption of ASU 2016-02. In accordance with the guidance, these net deferred gains were adjusted, net of tax, as a cumulative-effect adjustment to opening retained earnings. All of the leases in which the Company is the lessee are classified as operating leases and are primarily comprised of real estate property for branches and administrative offices with terms extending through 2040. The following table represents the consolidated statements of financial condition classification of the Company’s right-of use-assets and lease liabilities at September 30, 2019 (in thousands): Classification September 30, 2019 Lease Right-of-Use Assets: Operating lease right-of-use assets Other assets $ 43,483 Lease Liabilities: Operating lease liabilities Other liabilities $ 44,562 The calculated amount of the right-of-use assets and lease liabilities in the table above are impacted by the length of the lease term and the discount rate used to present value the minimum lease payments. The Company’s lease agreements often include one or more options to renew at the Company’s discretion. If at lease inception the Company considers the exercising of a renewal option to be reasonably certain, the Company will include the extended term in the calculation of the right-of-use asset and lease liability. Generally, the Company considers the first renewal option to be reasonably certain and includes it in the calculation of the right-of use asset and lease liability. Regarding the discount rate, Topic 842 requires the use of the rate implicit in the lease whenever this rate is readily determinable. As this rate is rarely determinable, the Company utilizes its incremental borrowing rate at lease inception based upon the term of the lease. For operating leases existing prior to January 1, 2019, the rate for the remaining lease term as of January 1, 2019 was applied. At September 30, 2019, the weighted-average remaining lease term and the weighted-average discount rate for the Company's operating leases were 9.6 years and 3.45%, respectively. The following table represents lease costs and other lease information for the Company's operating leases. The variable lease cost primarily represents variable payments such as common area maintenance and utilities (in thousands): (in-thousands) Three months ended September 30, 2019 Nine months ended September 30, 2019 Lease Costs Operating lease cost $ 2,127 $ 6,303 Variable lease cost 727 2,083 Total Lease Cost $ 2,854 $ 8,386 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 6,179 During the three months ended September 30, 2019, the Company did not enter into any new lease obligations. During the nine months ended September 30, 2019, the Company entered into one new lease obligation related to the T&L acquisition. The Company recorded a $1.9 million right-of-use asset for this lease obligation. Future minimum payments for operating leases with initial or remaining terms of one year or more as of September 30, 2019 were as follows: (in-thousands) Operating Leases Twelve months ended: Remainder of 2019 $ 2,125 2020 8,316 2021 6,064 2022 5,263 2023 4,752 Thereafter 26,541 Total future minimum lease payments 53,061 Amounts representing interest 8,499 Present value of net future minimum lease payments $ 44,562

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
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 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 nine months ended September 30, 2019 are not necessarily indicative of the results of operations that may be expected for all of 2019.
Impact of Recent Accounting Pronouncements	Impact of Recent Accounting Pronouncements Accounting Pronouncements Adopted in 2019 In October 2018, the Financial Accounting Standards Board ("FASB") issued ASU No. 2018-16, “Derivatives and Hedging (Topic 815) – Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes.” This ASU permits the use of the OIS rate based upon SOFR as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815 in addition to the UST, the LIBOR swap rate, the OIS rate based on the Fed Funds Effective Rate, and the SIFMA Municipal Swap Rate. The amendments in ASU 2018-16 are required to be adopted concurrently with ASU 2017-12, " Derivatives and Hedging: Targeted Improvements to Accounting for Hedging," which was effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. ASU 2018-16 should be adopted on a prospective basis for qualifying new or redesignated hedging relationships entered into on or after the date of adoption. The Company adopted this guidance effective January 1, 2019. The adoption of this guidance had no impact on the Company’s consolidated financial statements. 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 was effective for public business entities for fiscal years beginning after December 15, 2018. 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 adopted this guidance effective January 1, 2019. The adoption of this guidance had no impact 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. This ASU was effective for fiscal years beginning after December 15, 2018, including interim periods within the reporting period, with early adoption permitted. The Company adopted this guidance effective January 1, 2019. The adoption of this guidance had no impact on the Company’s consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842).” This ASU requires all lessees to recognize a lease liability and a right-of-use asset, measured at the present value of the future minimum lease payments, at the lease commencement date. Lessor accounting remains largely unchanged under the new guidance. The guidance is effective for fiscal years beginning after December 15, 2018, including interim reporting periods within that reporting period, with early adoption permitted. A modified retrospective approach must be applied for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. In July 2018, the FASB issued ASU No. 2018-11, “Leases - Targeted Improvements” to provide entities with relief from the costs of implementing certain aspects of ASU No. 2016-02. Specifically, under the amendments in ASU 2018-11: (1) entities may elect not to recast the comparative periods presented when transitioning to the new leasing standard, and (2) lessors may elect not to separate lease and non-lease components when certain conditions are met. The amendments have the same effective date as ASU 2016-02. 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 has identified the inventory of leases and actively accumulated the requisite lease data necessary to apply the guidance. Also, the working group purchased and implemented a software platform to properly record and track all leases, monitor right-of-use assets and lease liabilities and support all accounting and disclosure requirements of the guidance. The Company adopted both ASU No. 2016-02 and ASU No. 2018-11 effective January 1, 2019 and elected to apply the guidance as of the beginning of the period of adoption (January 1, 2019) and not restate comparative periods. The Company also elected certain optional practical expedients, which allow the Company to forego a reassessment of (1) whether any expired or existing contracts are or contain leases, (2) the lease classification for any expired or existing leases, and (3) the initial direct costs for any existing leases. The adoption of the new standard resulted in the Company recording a right-of-use and an additional lease liability on its consolidated statement of financial condition of $44.9 million and $46.1 million, respectively, based on the present value of the expected remaining lease payments at January 1, 2019. It also resulted in additional footnote disclosures (see Note 12 - "Leases"). Accounting Pronouncements Not Yet Adopted In April 2019, the FASB issued ASU No. 2019-04, "Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments" which clarifies and improves areas of guidance related to the recently issued standards on credit losses, hedging, recognition and measurement. The most significant provisions of the ASU relate to how companies will estimate expected credit losses under Topic 326 by incorporating (1) expected recoveries of financial assets, including recoveries of amounts expected to be written off and those previously written off, and (2) clarifying that contractual extensions or renewal options that are not unconditionally cancellable by the lender are considered when determining the contractual term over which expected credit losses are measured. ASU No. 2019-04 is effective for reporting periods beginning January 1, 2020. The Company continues to assess the impact that the guidance will have on the Company’s consolidated financial statements. In May 2019, the FASB issued ASU No. 2019-05, “Financial Instruments - Credit Losses (Topic 326); Targeted Transition Relief.” This ASU allows entities to irrevocably elect, upon adoption of ASU 2016-13, the fair value option on financial instruments that (1) were previously recorded at amortized cost and (2) are within the scope of ASC 326-20 if the instruments are eligible for the fair value option under ASC 825-10. The fair value option election does not apply to held-to-maturity debt securities. Entities are required to make this election on an instrument-by-instrument basis. ASU 2019-05 has the same effective date as ASU 2016-13 (i.e., the first quarter of 2020). The Company continues to assess the impact that the guidance will have on the Company’s consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, “Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement.” This ASU eliminates, adds and modifies certain disclosure requirements for fair value measurements. Among the changes, entities will no longer be required to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but will be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. ASU No. 2018-13 is effective for interim and annual reporting periods beginning after December 15, 2019; early adoption is permitted. Entities are also allowed to elect early adoption of the eliminated or modified disclosure requirements and delay adoption of the new disclosure requirements until their effective date. The Company does not expect the adoption of this guidance 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

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2019
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 nine months ended September 30, 2019 and 2018 (dollars in thousands, except per share amounts): Three months ended September 30, 2019 2018 Net Weighted Per Net Weighted Per Net income $ 31,399 $ 35,468 Basic earnings per share: Income available to common stockholders $ 31,399 64,511,956 $ 0.49 $ 35,468 65,037,779 $ 0.55 Dilutive shares 120,329 146,102 Diluted earnings per share: Income available to common stockholders $ 31,399 64,632,285 $ 0.49 $ 35,468 65,183,881 $ 0.54 Nine months ended September 30, 2019 2018 Net Weighted Per Net Weighted Per Net income $ 86,682 $ 82,624 Basic earnings per share: Income available to common stockholders $ 86,682 64,720,642 $ 1.34 $ 82,624 64,907,210 $ 1.27 Dilutive shares 132,341 171,417 Diluted earnings per share: Income available to common stockholders $ 86,682 64,852,983 $ 1.34 $ 82,624 65,078,627 $ 1.27

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2019
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 September 30, 2019 and December 31, 2018 (in thousands): September 30, 2019 Amortized Gross Gross Fair Mortgage-backed securities $ 1,009,953 14,504 (916) 1,023,541 State and municipal obligations 3,920 168 — 4,088 Corporate obligations 25,034 344 (12) 25,366 $ 1,038,907 15,016 (928) 1,052,995 December 31, 2018 Amortized Gross Gross Fair Mortgage-backed securities $ 1,048,415 2,704 (16,150) 1,034,969 State and municipal obligations 2,828 84 — 2,912 Corporate obligations 25,039 268 (109) 25,198 $ 1,076,282 3,056 (16,259) 1,063,079
Available for sale Debt Securities with Temporary Impairment	The following tables present the fair values and gross unrealized losses for available for sale debt securities with temporary impairment at September 30, 2019 and December 31, 2018 (in thousands): September 30, 2019 Unrealized Losses Less than 12 months 12 months or longer Total Fair Gross Fair Gross Fair Gross Mortgage-backed securities $ 98,998 (363) 69,399 (553) 168,397 (916) Corporate obligations 2,018 (12) — — 2,018 (12) $ 101,016 (375) 69,399 (553) 170,415 (928) December 31, 2018 Unrealized Losses Less than 12 months 12 months or longer Total Fair value Gross Fair value Gross Fair Gross Mortgage-backed securities $ 218,175 (2,173) 545,880 (13,977) 764,055 (16,150) Corporate obligations 7,897 (109) — — 7,897 (109) $ 226,072 (2,282) 545,880 (13,977) 771,952 (16,259)
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 September 30, 2019 and December 31, 2018 (in thousands): September 30, 2019 Amortized Gross Gross Fair Agency obligations $ 4,948 11 (11) 4,948 Mortgage-backed securities 134 3 — 137 State and municipal obligations 445,896 15,035 (122) 460,809 Corporate obligations 10,760 55 (11) 10,804 $ 461,738 15,104 (144) 476,698 December 31, 2018 Amortized Gross Gross Fair Agency obligations $ 4,989 1 (94) 4,896 Mortgage-backed securities 187 3 — 190 State and municipal obligations 463,801 4,329 (3,767) 464,363 Corporate obligations 10,448 1 (158) 10,291 $ 479,425 4,334 (4,019) 479,740
Schedule of Unrealized Loss on Investments	The following tables present the fair value and gross unrealized losses for held to maturity debt securities with temporary impairment at September 30, 2019 and December 31, 2018 (in thousands): September 30, 2019 Unrealized Losses Less than 12 months 12 months or longer Total Fair Gross Fair Gross Fair Gross Agency obligations $ 3,348 (11) — — 3,348 (11) State and municipal obligations 12,352 (52) 2,097 (70) 14,449 (122) Corporate obligations 4,327 (11) — — 4,327 (11) $ 20,027 (74) 2,097 (70) 22,124 (144) December 31, 2018 Unrealized Losses Less than 12 months 12 months or longer Total Fair Gross Fair Gross Fair Gross Agency obligations $ — — 4,525 (94) 4,525 (94) State and municipal obligations 96,412 (918) 81,663 (2,849) 178,075 (3,767) Corporate obligations — — 9,004 (158) 9,004 (158) $ 96,412 (918) 95,192 (3,101) 191,604 (4,019)
Available-for-sale Securities
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 September 30, 2019, 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. September 30, 2019 Amortized Fair Due in one year or less $ — — Due after one year through five years 3,004 3,079 Due after five years through ten years 25,950 26,375 Due after ten years — — $ 28,954 29,454
Held-to-maturity Securities
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 September 30, 2019 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. September 30, 2019 Amortized Fair Due in one year or less $ 11,752 11,768 Due after one year through five years 99,205 101,073 Due after five years through ten years 252,531 261,072 Due after ten years 98,116 102,648 $ 461,604 476,561

Loans Receivable and Allowanc_2

Loans Receivable and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Schedule of Summarized Loans Receivable	Loans receivable at September 30, 2019 and December 31, 2018 are summarized as follows (in thousands): September 30, 2019 December 31, 2018 Mortgage loans: Residential $ 1,072,175 1,099,464 Commercial 2,437,117 2,299,313 Multi-family 1,298,630 1,339,677 Construction 399,501 388,999 Total mortgage loans 5,207,423 5,127,453 Commercial loans 1,659,866 1,695,021 Consumer loans 403,576 431,428 Total gross loans 7,270,865 7,253,902 Purchased credit-impaired ("PCI") loans 842 899 Premiums on purchased loans 2,716 3,243 Unearned discounts (26) (33) Net deferred fees (7,403) (7,423) Total loans $ 7,266,994 7,250,588
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): September 30, 2019 30-59 Days 60-89 Days Non-accrual Recorded Total Past Current Total Loans Mortgage loans: Residential $ 6,013 2,333 6,456 — 14,802 1,057,373 1,072,175 Commercial — — 1,728 — 1,728 2,435,389 2,437,117 Multi-family — — — — — 1,298,630 1,298,630 Construction — — — — — 399,501 399,501 Total mortgage loans 6,013 2,333 8,184 — 16,530 5,190,893 5,207,423 Commercial loans 10 1,548 30,436 — 31,994 1,627,872 1,659,866 Consumer loans 716 556 1,361 — 2,633 400,943 403,576 Total gross loans $ 6,739 4,437 39,981 — 51,157 7,219,708 7,270,865 December 31, 2018 30-59 Days 60-89 Days Non-accrual Recorded Total Past Current Total Loans Receivable Mortgage loans: Residential $ 4,188 5,557 5,853 — 15,598 1,083,866 1,099,464 Commercial — — 3,180 — 3,180 2,296,133 2,299,313 Multi-family — — — — — 1,339,677 1,339,677 Construction — — — — — 388,999 388,999 Total mortgage loans 4,188 5,557 9,033 — 18,778 5,108,675 5,127,453 Commercial loans 425 13,565 15,391 — 29,381 1,665,640 1,695,021 Consumer loans 1,238 610 1,266 — 3,114 428,314 431,428 Total gross loans $ 5,851 19,732 25,690 — 51,273 7,202,629 7,253,902
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): September 30, 2019 Mortgage Commercial Consumer Total Portfolio Individually evaluated for impairment $ 36,378 32,824 2,069 71,271 Collectively evaluated for impairment 5,171,045 1,627,042 401,507 7,199,594 Total gross loans $ 5,207,423 1,659,866 403,576 7,270,865 December 31, 2018 Mortgage Commercial Consumer Total Portfolio Individually evaluated for impairment $ 24,680 23,747 2,257 50,684 Collectively evaluated for impairment 5,102,773 1,671,274 429,171 7,203,218 Total gross loans $ 5,127,453 1,695,021 431,428 7,253,902
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): September 30, 2019 Mortgage Commercial loans Consumer loans Total Individually evaluated for impairment $ 908 4,353 45 5,306 Collectively evaluated for impairment 24,173 25,990 1,875 52,038 Total gross loans $ 25,081 30,343 1,920 57,344 December 31, 2018 Mortgage Commercial loans Consumer Total Individually evaluated for impairment $ 1,026 92 47 1,165 Collectively evaluated for impairment 26,652 25,601 2,144 54,397 Total gross loans $ 27,678 25,693 2,191 55,562
Schedule of Troubled Debt Restructuring	The following tables present the number of loans modified as TDRs during the three and nine months ended September 30, 2019 and 2018, along with their balances immediately prior to the modification date and post-modification as of September 30, 2019 and 2018 (dollars in thousands): For the three months ended September 30, 2019 September 30, 2018 Troubled Debt Restructurings Number of Pre-Modification Post-Modification Number of Pre-Modification Post-Modification ($ in thousands) Mortgage loans: Residential — $ — $ — 3 $ 693 $ 694 Total mortgage loans — — — 3 693 694 Commercial loans — — — 2 5,919 6,062 Consumer loans 1 20 16 1 336 335 Total restructured loans 1 $ 20 $ 16 6 $ 6,948 $ 7,091 For the nine months ended September 30, 2019 September 30, 2018 Troubled Debt Restructurings Number of Pre-Modification Post-Modification Number of Pre-Modification Post-Modification ($ in thousands) Mortgage loans: Residential 2 $ 749 $ 716 4 $ 811 $ 797 Commercial 1 14,010 14,010 — — — Total mortgage loans 3 14,759 14,726 4 811 797 Commercial loans 7 2,707 1,878 6 12,545 8,752 Consumer loans 1 20 16 1 336 335 Total restructured loans 11 $ 17,486 $ 16,620 11 $ 13,692 $ 9,884
Schedule of Troubled Debt Restructurings Subsequently Defaulted	The following table presents loans modified as TDRs within the previous 12 months from September 30, 2019 and 2018, and for which there was a payment default (90 days or more past due) at the quarter ended September 30, 2019 and 2018. September 30, 2019 September 30, 2018 Troubled Debt Restructurings Subsequently Defaulted Number of Loans Outstanding Recorded Investment Number of Loans Outstanding Recorded ($ in thousands) Mortgage loans: Residential 1 $ 578 — $ — Total mortgage loans 1 578 — — Commercial loans — $ — 3 $ 1,344 Total restructured loans 1 $ 578 3 $ 1,344
Schedule of Allowance for Loan Losses by Portfolio Segment	The activity in the allowance for loan losses by portfolio segment for the three and nine months ended September 30, 2019 and 2018 was as follows (in thousands): Three months ended September 30, Mortgage loans Commercial loans Consumer loans Total 2019 Balance at beginning of period $ 27,280 33,549 1,981 62,810 Provision (credited) charged to operations (2,092) 2,880 (288) 500 Recoveries of loans previously charged-off 24 126 343 493 Loans charged-off (131) (6,212) (116) (6,459) Balance at end of period $ 25,081 30,343 1,920 57,344 2018 Balance at beginning of period $ 27,161 29,494 2,164 58,819 Provision charged (credited) to operations 88 915 (3) 1,000 Recoveries of loans previously charged-off 303 36 297 636 Loans charged-off (57) (6,302) (186) (6,545) Balance at end of period $ 27,495 24,143 2,272 53,910 Nine months ended September 30, Mortgage Commercial Consumer Total 2019 Balance at beginning of period $ 27,678 25,693 2,191 55,562 Provision (credited) charged to operations (2,814) 13,337 (323) 10,200 Recoveries of loans previously charged-off 361 291 596 1,248 Loans charged-off (144) (8,978) (544) (9,666) Balance at end of period $ 25,081 30,343 1,920 57,344 2018 Balance at beginning of period $ 28,052 29,814 2,329 60,195 Provision (credited) charged to operations (716) 22,740 (124) 21,900 Recoveries of loans previously charged-off 435 268 689 1,392 Loans charged-off (276) (28,679) (622) (29,577) Balance at end of period $ 27,495 24,143 2,272 53,910
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): September 30, 2019 December 31, 2018 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 $ 13,974 11,170 — 11,393 874 15,013 12,005 — 12,141 594 Commercial — — — — — 1,550 1,546 — 1,546 — Total 13,974 11,170 — 11,393 874 16,563 13,551 — 13,687 594 Commercial loans 7,508 6,274 — 6,564 52 21,746 16,254 — 17,083 328 Consumer loans 1,714 1,159 — 1,357 59 1,871 1,313 — 1,386 90 Total impaired loans $ 23,196 18,603 — 19,314 985 40,180 31,118 — 32,156 1,012 Loans with an allowance recorded Mortgage loans: Residential $ 10,640 10,177 800 10,262 322 10,573 10,090 954 10,186 425 Commercial 15,030 15,031 108 15,046 427 1,039 1,039 72 1,052 53 Total 25,670 25,208 908 25,308 749 11,612 11,129 1,026 11,238 478 Commercial loans 27,674 26,550 4,353 27,851 295 7,493 7,493 92 9,512 435 Consumer loans 921 910 45 725 36 954 944 47 962 40 Total impaired loans $ 54,265 52,668 5,306 53,884 1,080 20,059 19,566 1,165 21,712 953 Total impaired loans Mortgage loans: Residential $ 24,614 21,347 800 21,655 1,196 25,586 22,095 954 22,327 1,019 Commercial 15,030 15,031 108 15,046 427 2,589 2,585 72 2,598 53 Total 39,644 36,378 908 36,701 1,623 28,175 24,680 1,026 24,925 1,072 Commercial loans 35,183 32,824 4,353 34,415 347 29,239 23,747 92 26,595 763 Consumer loans 2,635 2,069 45 2,082 95 2,825 2,257 47 2,348 130 Total impaired loans $ 77,462 71,271 5,306 73,198 2,065 60,239 50,684 1,165 53,868 1,965
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 September 30, 2019 Residential Commercialmortgage Multi-family Construction Total Commercial Consumer Total loans Special mention $ 1,804 38,125 — — 39,929 79,721 458 120,108 Substandard 8,394 10,708 — 6,181 25,283 64,151 1,811 91,245 Doubtful — — — — — 865 — 865 Loss — — — — — — — — Total classified and criticized 10,198 48,833 — 6,181 65,212 144,737 2,269 212,218 Pass/Watch 1,061,977 2,388,284 1,298,630 393,320 5,142,211 1,515,129 401,307 7,058,647 Total $ 1,072,175 2,437,117 1,298,630 399,501 5,207,423 1,659,866 403,576 7,270,865 At December 31, 2018 Residential Commercialmortgage Multi-family Construction Total Commercial Consumer Total loans Special mention $ 5,071 14,496 228 — 19,795 67,396 610 87,801 Substandard 7,878 13,292 — 6,181 27,351 45,180 1,711 74,242 Doubtful — — — — — 923 — 923 Loss — — — — — — — — Total classified and criticized 12,949 27,788 228 6,181 47,146 113,499 2,321 162,966 Pass/Watch 1,086,515 2,271,525 1,339,449 382,818 5,080,307 1,581,522 429,107 7,090,936 Total $ 1,099,464 2,299,313 1,339,677 388,999 5,127,453 1,695,021 431,428 7,253,902

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2019
Banking and Thrift [Abstract]
Schedule of Deposits	Deposits at September 30, 2019 and December 31, 2018 are summarized as follows (in thousands): September 30, 2019 December 31, 2018 Savings $ 985,575 1,051,922 Money market 1,593,681 1,496,310 NOW 1,853,650 2,049,645 Non-interest bearing 1,683,772 1,481,753 Certificates of deposit 844,693 750,492 Total deposits $ 6,961,371 6,830,122

Components of Net Periodic Be_2

Components of Net Periodic Benefit Cost (Tables)	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Net Periodic Benefit Cost (Increase)	Net periodic (decrease) increase in benefit cost for pension benefits and other post-retirement benefits for the three and nine months ended September 30, 2019 and 2018 includes the following components (in thousands): Three months ended September 30, Nine months ended September 30, Pension benefits Other post-retirement benefits Pension benefits Other post-retirement benefits 2019 2018 2019 2018 2019 2018 2019 2018 Service cost $ — — 20 29 $ — — 60 87 Interest cost 299 273 209 196 899 821 628 590 Expected return on plan assets (640) (693) — — (1,922) (2,079) — — Amortization of prior service cost — — — — — — — — Amortization of the net loss (gain) 254 199 (206) (99) 762 597 (620) (297) Net periodic benefit (decrease) increase in benefit cost $ (87) (221) 23 126 $ (261) (661) 68 380

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2019
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 September 30, 2019 and December 31, 2018, by level within the fair value hierarchy: Fair Value Measurements at Reporting Date Using: (In thousands) September 30, 2019 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: Mortgage-backed securities $ 1,023,541 — 1,023,541 — State and municipal obligations 4,088 — 4,088 — Corporate obligations 25,366 — 25,366 — Total available for sale debt securities $ 1,052,995 — 1,052,995 — Equity securities 728 728 — — Derivative assets 54,743 — 54,743 — $ 1,108,466 728 1,107,738 — Derivative liabilities $ 54,838 — 54,838 — Measured on a non-recurring basis: Loans measured for impairment based on the fair value of the underlying collateral $ 19,025 — — 19,025 Foreclosed assets 1,534 — — 1,534 $ 20,559 — — 20,559 Fair Value Measurements at Reporting Date Using: (In thousands) December 31, 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: Mortgage-backed securities $ 1,034,969 — 1,034,969 — State and municipal obligations 2,912 — 2,912 — Corporate obligations 25,198 — 25,198 — Total available for sale debt securities $ 1,063,079 — 1,063,079 — Equity Securities 635 635 — — Derivative assets 15,634 — 15,634 — $ 1,079,348 635 1,078,713 — Derivative liabilities $ 14,766 — 14,766 — Measured on a non-recurring basis: Loans measured for impairment based on the fair value of the underlying collateral $ 4,285 — — 4,285 Foreclosed assets 1,565 — — 1,565 $ 5,850 — — 5,850
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 September 30, 2019 and December 31, 2018. Fair values are presented by level within the fair value hierarchy. Fair Value Measurements at September 30, 2019 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 $ 260,860 260,860 260,860 — — Available for sale debt securities: Mortgage-backed securities 1,023,541 1,023,541 — 1,023,541 — State and municipal obligations 4,088 4,088 — 4,088 — Corporate obligations 25,366 25,366 — 25,366 — Total available for sale debt securities $ 1,052,995 1,052,995 — 1,052,995 — Held to maturity debt securities: Agency obligations 4,948 4,948 4,948 — — Mortgage-backed securities 134 137 — 137 — State and municipal obligations 445,896 460,809 — 460,809 — Corporate obligations 10,760 10,804 — 10,804 — Total held to maturity debt securities $ 461,738 476,698 4,948 471,750 — FHLBNY stock 68,721 68,721 68,721 — — Equity Securities 728 728 728 — — Loans, net of allowance for loan losses 7,209,650 7,260,050 — — 7,260,050 Derivative assets 54,743 54,743 — 54,743 — Financial liabilities: Deposits other than certificates of deposits $ 6,116,678 6,116,678 6,116,678 — — Certificates of deposit 844,693 844,095 — 844,095 — Total deposits $ 6,961,371 6,960,773 6,116,678 844,095 — Borrowings 1,380,063 1,382,650 — 1,382,650 — Derivative liabilities 54,838 54,838 — 54,838 — Fair Value Measurements at December 31, 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 $ 142,661 142,661 142,661 — — Available for sale debt securities: Mortgage-backed securities 1,034,969 1,034,969 — 1,034,969 — State and municipal obligations 2,912 2,912 — 2,912 — Corporate obligations 25,198 25,198 — 25,198 — Total available for sale debt securities $ 1,063,079 1,063,079 — 1,063,079 — Held to maturity debt securities: Agency obligations $ 4,989 4,896 4,896 — — Mortgage-backed securities 187 190 — 190 — State and municipal obligations 463,801 464,363 — 464,363 — Corporate obligations 10,448 10,291 — 10,291 — Total held to maturity debt securities $ 479,425 479,740 4,896 474,844 — FHLBNY stock 68,813 68,813 68,813 — — Equity Securities 635 635 635 — — Loans, net of allowance for loan losses 7,195,026 7,104,380 — — 7,104,380 Derivative assets 15,634 15,634 — 15,634 — Financial liabilities: Deposits other than certificates of deposits $ 6,079,630 6,079,630 6,079,630 — — Certificates of deposit 750,492 746,753 — 746,753 — Total deposits $ 6,830,122 6,826,383 6,079,630 746,753 — Borrowings 1,442,282 1,431,001 — 1,431,001 — Derivative liabilities 14,766 14,766 — 14,766 —

Other Comprehensive (Loss) In_2

Other Comprehensive (Loss) Income (Tables)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Components of Other Comprehensive Income (Loss)	The following table presents the components of other comprehensive income (loss), both gross and net of tax, for the three and nine months ended September 30, 2019 and 2018 (in thousands): Three months ended September 30, 2019 2018 Before Tax After Before Tax After Components of Other Comprehensive Income: Unrealized gains and losses on available for sale debt securities: Net unrealized gains (losses) arising during the period $ 3,594 (980) 2,614 (6,547) 1,727 (4,820) Reclassification adjustment for gains included in net income — — — — — — Total 3,594 (980) 2,614 (6,547) 1,727 (4,820) Unrealized gains on derivatives (cash flow hedges) 188 (51) 137 62 (16) 46 Amortization related to post-retirement obligations 48 (13) 35 100 (25) 75 Total other comprehensive income (loss) $ 3,830 (1,044) 2,786 (6,385) 1,686 (4,699) Nine months ended September 30, 2019 2018 Before Tax After Before Tax After Components of Other Comprehensive Income: Unrealized gains and losses on available for sale debt securities: Net unrealized gains (losses) arising during the period $ 27,291 (7,437) 19,854 (24,310) 6,413 (17,897) Reclassification adjustment for gains included in net income — — — — — — Total 27,291 (7,437) 19,854 (24,310) 6,413 (17,897) Unrealized (losses) gains on Derivatives (cash flow hedges) (1,119) 306 (813) 985 (261) 724 Amortization related to post-retirement obligations 78 (21) 57 283 (72) 211 Total other comprehensive income (loss) $ 26,250 (7,152) 19,098 (23,042) 6,080 (16,962)
Components of Accumulated Other Comprehensive Income, Net of Tax	The following tables present the changes in the components of accumulated other comprehensive income (loss), net of tax, for the three and nine months ended September 30, 2019 and 2018 (in thousands): Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax 2019 2018 Unrealized Post- Retirement Unrealized (Losses) Gains on Derivatives (cash flow hedges) Accumulated Unrealized Post- Retirement Unrealized Gains on Derivatives (cash flow hedges) Accumulated Balance at $ 7,635 (3,603) (56) 3,976 (16,553) (4,710) 1,351 (19,912) Current - period other comprehensive income (loss) 2,614 35 137 2,786 (4,820) 75 46 (4,699) Balance at September 30, $ 10,249 (3,568) 81 6,762 (21,373) (4,635) 1,397 (24,611) Changes in Accumulated Other Comprehensive Income (Loss) by Component, net of tax 2019 2018 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, $ (9,605) (3,625) 894 (12,336) (3,292) (4,846) 673 (7,465) Current - period other comprehensive income (loss) 19,854 57 (813) 19,098 (17,897) 211 724 (16,962) Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01 $ — — — — (184) — — (184) Balance at September 30, $ 10,249 (3,568) 81 6,762 (21,373) (4,635) 1,397 (24,611)
Summary of Reclassifications Out of Accumulated Other Comprehensive Income	The following tables summarize the reclassifications from accumulated other comprehensive income (loss) to the consolidated statements of income for the three and nine months ended September 30, 2019 and 2018 (in thousands): Reclassifications From Accumulated Other Comprehensive Amount reclassified from AOCI for the three months ended September 30, Affected line item in the Consolidated 2019 2018 Details of AOCI: Post-retirement obligations: Amortization of actuarial losses $ 48 100 Compensation and employee benefits (1) (13) (25) Income tax expense Total reclassification $ 35 75 Net of tax Reclassifications From Accumulated Other Comprehensive Amount reclassified from AOCI for the nine months ended September 30, Affected line item in the Consolidated 2019 2018 Details of AOCI: Post-retirement obligations: Amortization of actuarial losses $ 142 300 Compensation and employee benefits (1) (39) (78) Income tax expense Total reclassification $ 103 222 Net of tax (1) This item is included in the computation of net periodic benefit cost. See Note 6. Components of Net Periodic Benefit Cost.

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value of Derivative Financial Instruments	The tables 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 September 30, 2019 and December 31, 2018 (in thousands): At September 30, 2019 Asset Derivatives Liability Derivatives Consolidated Statements of Financial Condition Fair Consolidated Statements of Financial Condition Fair Derivatives not designated as a hedging instrument: Interest rate products Other assets $ 54,571 Other liabilities 54,838 Credit contracts Other assets 61 Other liabilities — Total derivatives not designated as a hedging instrument $ 54,632 54,838 Derivatives designated as a hedging instrument: Interest rate products Other assets $ 111 Other liabilities — Total derivatives designated as a hedging instrument $ 111 — At December 31, 2018 Asset Derivatives Liability Derivatives Consolidated Statements of Financial Condition Fair Consolidated Statements of Financial Condition Fair Derivatives not designated as a hedging instrument: Interest rate products Other assets $ 14,154 Other liabilities 14,766 Credit contracts Other assets 251 Other liabilities — Total derivatives not designated as a hedging instrument $ 14,405 14,766 Derivatives designated as a hedging instrument: Interest rate products Other assets $ 1,229 Other liabilities — Total derivatives designated as a hedging instrument $ 1,229 —
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 nine months ended September 30, 2019 and 2018 (in thousands). Gain (loss) recognized in income on derivatives for the three months ended Consolidated Statements of Income September 30, 2019 September 30, 2018 Derivatives not designated as a hedging instrument: Interest rate products Other income $ 2,307 27 Credit contracts Other income (71) (145) Total $ 2,236 (118) Derivatives designated as a hedging instrument: Interest rate products Interest expense $ 157 105 Total $ 157 105 Gain (loss) recognized in income on derivatives for the nine months ended Consolidated Statements of Income September 30, 2019 September 30, 2018 Derivatives not designated as a hedging instrument: Interest rate products Other income $ 212 265 Credit contracts Other income (56) (64) Total $ 156 201 Derivatives designated as a hedging instrument: Interest rate products Interest expense $ 466 (185) Total $ 466 (185)

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2019
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 nine months ended September 30, 2019 and 2018: Three months ended September 30, Nine months ended September 30, (in-thousands) 2019 2018 2019 2018 Non-interest income In-scope of Topic 606: Wealth management fees $ 6,084 4,570 16,406 13,572 Banking service charges and other fees: Service charges on deposit accounts 3,386 3,356 9,853 9,910 Debit card and ATM fees 1,474 1,486 4,271 4,444 Total banking service charges and other fees 4,860 4,842 14,124 14,354 Total in-scope non-interest income 10,944 9,412 30,530 27,926 Total out-of-scope non-interest income 7,103 6,504 15,539 15,134 Total non-interest income $ 18,047 15,916 46,069 43,060

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Supplemental Balance Sheet Information	The following table represents the consolidated statements of financial condition classification of the Company’s right-of use-assets and lease liabilities at September 30, 2019 (in thousands): Classification September 30, 2019 Lease Right-of-Use Assets: Operating lease right-of-use assets Other assets $ 43,483 Lease Liabilities: Operating lease liabilities Other liabilities $ 44,562
Schedule of Supplemental Cash Flow and Other information Related to Leases	The following table represents lease costs and other lease information for the Company's operating leases. The variable lease cost primarily represents variable payments such as common area maintenance and utilities (in thousands): (in-thousands) Three months ended September 30, 2019 Nine months ended September 30, 2019 Lease Costs Operating lease cost $ 2,127 $ 6,303 Variable lease cost 727 2,083 Total Lease Cost $ 2,854 $ 8,386 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 6,179
Schedule of Future Minimum Payments	Future minimum payments for operating leases with initial or remaining terms of one year or more as of September 30, 2019 were as follows: (in-thousands) Operating Leases Twelve months ended: Remainder of 2019 $ 2,125 2020 8,316 2021 6,064 2022 5,263 2023 4,752 Thereafter 26,541 Total future minimum lease payments 53,061 Amounts representing interest 8,499 Present value of net future minimum lease payments $ 44,562

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Narrative) (Detail) - shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Accounting Policies [Abstract]
Anti-dilutive stock options and awards excluded from computation of earnings per share (in shares)	678,583	429,878

Summary of Significant Accoun_5

Summary of Significant Accounting Policies (Earnings Per Share) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounting Policies [Abstract]
Net income	$ 31,399	$ 35,468	$ 86,682	$ 82,624
Basic earnings per share:
Income available to common stockholders, basic	$ 31,399	$ 35,468	$ 86,682	$ 82,624
Weighted average common shares outstanding, basic (in shares)	64,511,956	65,037,779	64,720,642	64,907,210
Income available to common stockholders, per share amount, basic (usd per share)	$ 0.49	$ 0.55	$ 1.34	$ 1.27
Dilutive shares (in shares)	120,329	146,102	132,341	171,417
Diluted earnings per share:
Income available to common stockholders, diluted	$ 31,399	$ 35,468	$ 86,682	$ 82,624
Weighted average common shares outstanding, diluted (in shares)	64,632,285	65,183,881	64,852,983	65,078,627
Income available to common stockholders, per share amount, diluted (usd per share)	$ 0.49	$ 0.54	$ 1.34	$ 1.27

Business Combinations (Detail)

Business Combinations (Detail) - USD ($) $ in Thousands	Apr. 01, 2019	Sep. 30, 2019
Business Acquisition [Line Items]
Assets under management at time of acquisition		$ 822,400
Tirschwell & Loewy
Business Acquisition [Line Items]
Goodwill recorded as result of acquisition	$ 8,200
Contingent consideration liability	$ 6,600
Additional cash consideration to former stakeholders	3 years
Contingent consideration limit	$ 11,000
Total cost of acquisition	21,600
Cash consideration	15,000
Tirschwell & Loewy | Customer Relationships
Business Acquisition [Line Items]
Identifiable intangible assets acquired	12,600
Tirschwell & Loewy | Other Intangible Assets
Business Acquisition [Line Items]
Identifiable intangible assets acquired	$ 800

Investment Securities (Narrativ

Investment Securities (Narrative) (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)securityposition	Sep. 30, 2018USD ($)position	Sep. 30, 2019USD ($)securityposition	Sep. 30, 2018USD ($)position	Dec. 31, 2018USD ($)securityposition
Schedule of Held-to-maturity Securities [Line Items]
Available for sale debt securities, at fair value	$ 1,052,995		$ 1,052,995		$ 1,063,079
Securities held to maturity, at fair value	$ 461,738		$ 461,738		$ 479,425
Total number of all held to maturity and available for sale securities in an unrealized loss position | security	88		88		509
Securities available for sale, number of securities in an unrealized loss position | position	45		45		175
Securities available for sale, amortized cost	$ 1,038,907		$ 1,038,907		$ 1,076,282
Unrealized loss	928		928		16,259
Held to maturity securities, proceeds from calls	14,400	$ 10,400	26,600	$ 30,900
Held to maturity securities, recognized gain on calls	0	3	29	4
Held to maturity securities, recognized loss on calls		$ 1	0	$ 1
Investment securities held to maturity, fair value	$ 476,698		$ 476,698		$ 479,740
Number of securities in an unrealized loss position | security	43		43		334
Private Label Mortgage-Backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Securities available for sale, number of securities in an unrealized loss position | position		1		1
Securities available for sale, amortized cost		$ 18,000		$ 18,000
Unrealized loss	$ 1,000		$ 1,000
Mortgage-Backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Available for sale debt securities, at fair value	1,023,541		1,023,541		$ 1,034,969
Securities held to maturity, at fair value	134		134		187
Securities available for sale, amortized cost	1,009,953		1,009,953		1,048,415
Unrealized loss	916		916		16,150
Held-to-maturity securities, amortized cost	134		134
Investment securities held to maturity, fair value	$ 137		$ 137		$ 190

Investment Securities (Securiti

Investment Securities (Securities Available for Sale) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 1,038,907	$ 1,076,282
Gross unrealized gains	15,016	3,056
Gross unrealized losses	(928)	(16,259)
Available for sale debt securities, at fair value	1,052,995	1,063,079
Mortgage-Backed Securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	1,009,953	1,048,415
Gross unrealized gains	14,504	2,704
Gross unrealized losses	(916)	(16,150)
Available for sale debt securities, at fair value	1,023,541	1,034,969
State And Municipal Obligations
Debt Securities, Available-for-sale [Line Items]
Amortized cost	3,920	2,828
Gross unrealized gains	168	84
Gross unrealized losses	0	0
Available for sale debt securities, at fair value	4,088	2,912
Corporate Obligations
Debt Securities, Available-for-sale [Line Items]
Amortized cost	25,034	25,039
Gross unrealized gains	344	268
Gross unrealized losses	(12)	(109)
Available for sale debt securities, at fair value	$ 25,366	$ 25,198

Investment Securities (Availabl

Investment Securities (Available for Sale by Contractual Maturity) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 1,038,907	$ 1,076,282
Fair value	1,052,995	$ 1,063,079
Available-for-sale Securities
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	3,004
Due after five years through ten years, amortized cost	25,950
Due after ten years, amortized cost	0
Amortized cost	28,954
Due in one year or less, fair value	0
Due after one year through five years, fair value	3,079
Due after five years through ten years, fair value	26,375
Due after ten years, fair value	0
Fair value	$ 29,454

Investment Securities (Disclosu

Investment Securities (Disclosure Regarding Length of Time on Securities Available for Sale with Temporary Impairment) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 101,016	$ 226,072
Less than 12 months, gross unrealized losses	(375)	(2,282)
12 months or longer, fair value	69,399	545,880
12 months or longer, gross unrealized losses	(553)	(13,977)
Total, fair value	170,415	771,952
Total, gross unrealized losses	(928)	(16,259)
Mortgage-Backed Securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	98,998	218,175
Less than 12 months, gross unrealized losses	(363)	(2,173)
12 months or longer, fair value	69,399	545,880
12 months or longer, gross unrealized losses	(553)	(13,977)
Total, fair value	168,397	764,055
Total, gross unrealized losses	$ (916)	(16,150)
Corporate Obligations
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value		7,897	$ 2,018
Less than 12 months, gross unrealized losses		(109)	(12)
12 months or longer, fair value		0	0
12 months or longer, gross unrealized losses		0	0
Total, fair value		7,897	2,018
Total, gross unrealized losses		$ (109)	$ (12)

Investment Securities (Held to

Investment Securities (Held to Maturity) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	$ 461,738	$ 479,425
Gross unrealized gains	15,104	4,334
Gross unrealized losses	(144)	(4,019)
Held to maturity debt securities, fair value	476,698	479,740
Agency Obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	4,948	4,989
Gross unrealized gains	11	1
Gross unrealized losses	(11)	(94)
Held to maturity debt securities, fair value	4,948	4,896
Mortgage-Backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	134	187
Gross unrealized gains	3	3
Gross unrealized losses	0	0
Held to maturity debt securities, fair value	137	190
State And Municipal Obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	445,896	463,801
Gross unrealized gains	15,035	4,329
Gross unrealized losses	(122)	(3,767)
Held to maturity debt securities, fair value	460,809	464,363
Corporate Obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	10,760	10,448
Gross unrealized gains	55	1
Gross unrealized losses	(11)	(158)
Held to maturity debt securities, fair value	$ 10,804	$ 10,291

Investment Securities (Securi_2

Investment Securities (Securities Held to Maturity by Contractual Maturity) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	$ 461,738	$ 479,425
Fair value	476,698	$ 479,740
Held-to-maturity Securities
Schedule of Held-to-maturity Securities [Line Items]
Due in one year or less, amortized cost	11,752
Due after one year through five years, amortized cost	99,205
Due after five years through ten years, amortized cost	252,531
Due after ten years, amortized cost	98,116
Amortized cost	461,604
Due in one year or less, fair value	11,768
Due after one year through five years, fair value	101,073
Due after five years through ten years, fair value	261,072
Due after ten years, fair value	102,648
Fair value	$ 476,561

Investment Securities (Disclo_2

Investment Securities (Disclosure Regarding Length of Time on Investment Securities with Temporary Impairment) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	$ 20,027	$ 96,412
Less than 12 months, gross unrealized losses	(74)	(918)
12 months or longer, fair value	2,097	95,192
12 months or longer, gross unrealized losses	(70)	(3,101)
Total, fair value	22,124	191,604
Total, gross unrealized losses	(144)	(4,019)
Agency Obligations
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	3,348	0
Less than 12 months, gross unrealized losses	(11)	0
12 months or longer, fair value	0	4,525
12 months or longer, gross unrealized losses	0	(94)
Total, fair value	3,348	4,525
Total, gross unrealized losses	(11)	(94)
State And Municipal Obligations
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	12,352	96,412
Less than 12 months, gross unrealized losses	(52)	(918)
12 months or longer, fair value	2,097	81,663
12 months or longer, gross unrealized losses	(70)	(2,849)
Total, fair value	14,449	178,075
Total, gross unrealized losses	(122)	(3,767)
Corporate Obligations
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	4,327	0
Less than 12 months, gross unrealized losses	(11)	0
12 months or longer, fair value	0	9,004
12 months or longer, gross unrealized losses	0	(158)
Total, fair value	4,327	9,004
Total, gross unrealized losses	$ (11)	$ (158)

Loans Receivable and Allowanc_3

Loans Receivable and Allowance for Loan Losses (Narrative) (Detail)	3 Months Ended		9 Months Ended			12 Months Ended
	Sep. 30, 2019USD ($)SecurityLoan	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)borrowerSecurityLoantroubled_debt_restructuring	Dec. 31, 2018USD ($)SecurityLoan	Sep. 30, 2018USD ($)SecurityLoan	Dec. 31, 2018USD ($)borrowerSecurityLoantroubled_debt_restructuring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal amount of nonaccrual loans	$ 40,000,000		$ 40,000,000	$ 25,700,000		$ 25,700,000
Loans less than 90 days past due	$ 17,000,000		$ 17,000,000	$ 11,100,000		$ 11,100,000
Number of loans 90 days past due and still accruing | SecurityLoan	0		0	0		0
Impaired loan defined floor limit (greater than)	$ 1,000,000		$ 1,000,000
Impaired loans number | SecurityLoan			160			152
Impaired loans	71,271,000		$ 71,271,000	$ 50,684,000		$ 50,684,000
Number of troubled debt restructurings | troubled_debt_restructuring			133			129
Number of borrowers | borrower			129			124
Loans and leases receivable, impaired, nonperforming, accrual of interest	44,200,000		$ 44,200,000	35,600,000		$ 35,600,000
Charge off, impaired loan	$ 5,700,000	$ 6,300,000	$ 7,700,000		$ 8,300,000
Weighted average modified interest rate	5.63%		3.83%
Weighted average prior modification rate	5.38%		3.98%
Number of payment defaults for loans modified as TDRs | SecurityLoan			1		3
Allowances for loan losses	$ 5,306,000		$ 5,306,000	1,165,000		1,165,000
Impaired financing receivable with no related allowance	18,600,000		18,600,000	31,100,000		31,100,000
Average balance of impaired loans			73,198,000	53,900,000		53,868,000
Team Capital Bank
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance of PCI loans	842,000		842,000	$ 899,000		$ 899,000
Impaired Loans Troubled Debt Restructurings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Allowances for loan losses	$ 0		$ 141,000

Loans Receivable and Allowanc_4

Loans Receivable and Allowance for Loan Losses (Schedule of Summarized Loans Receivable) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	$ 7,270,865	$ 7,253,902
Premiums on purchased loans	2,716	3,243
Unearned discounts	(26)	(33)
Net deferred fees	(7,403)	(7,423)
Total loans	7,266,994	7,250,588
Loans, excluding purchased credit-impaired loans
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	7,270,865	7,253,902
Purchased credit-impaired (PCI) loans
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	842	899
Mortgage Portfolio Segment
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	5,207,423	5,127,453
Mortgage Portfolio Segment | Loans, excluding purchased credit-impaired loans
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	5,207,423	5,127,453
Mortgage Portfolio Segment | Residential
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	1,072,175	1,099,464
Mortgage Portfolio Segment | Residential | Loans, excluding purchased credit-impaired loans
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	1,072,175	1,099,464
Mortgage Portfolio Segment | Commercial
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	2,437,117	2,299,313
Mortgage Portfolio Segment | Commercial | Loans, excluding purchased credit-impaired loans
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	2,437,117	2,299,313
Mortgage Portfolio Segment | Multi-Family
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	1,298,630	1,339,677
Mortgage Portfolio Segment | Multi-Family | Loans, excluding purchased credit-impaired loans
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	1,298,630	1,339,677
Mortgage Portfolio Segment | Construction
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	399,501	388,999
Mortgage Portfolio Segment | Construction | Loans, excluding purchased credit-impaired loans
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	399,501	388,999
Commercial Loans
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	1,659,866	1,695,021
Commercial Loans | Loans, excluding purchased credit-impaired loans
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	1,659,866	1,695,021
Consumer Loans
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	403,576	431,428
Consumer Loans | Loans, excluding purchased credit-impaired loans
Servicing Liability at Amortized Cost [Line Items]
Total gross loans	$ 403,576	$ 431,428

Loans Receivable and Allowanc_5

Loans Receivable and Allowance for Loan Losses (Summary of Aging Loans Receivable by Portfolio Segment and Class) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	$ 39,981	$ 25,690
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	51,157	51,273
Current	7,219,708	7,202,629
Total gross loans	7,270,865	7,253,902
Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	6,739	5,851
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	4,437	19,732
Mortgage Portfolio Segment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	8,184	9,033
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	16,530	18,778
Current	5,190,893	5,108,675
Total gross loans	5,207,423	5,127,453
Mortgage Portfolio Segment | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	6,456	5,853
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	14,802	15,598
Current	1,057,373	1,083,866
Total gross loans	1,072,175	1,099,464
Mortgage Portfolio Segment | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	1,728	3,180
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	1,728	3,180
Current	2,435,389	2,296,133
Total gross loans	2,437,117	2,299,313
Mortgage Portfolio Segment | Multi-Family
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	1,298,630	1,339,677
Total gross loans	1,298,630	1,339,677
Mortgage Portfolio Segment | Construction
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	399,501	388,999
Total gross loans	399,501	388,999
Mortgage Portfolio Segment | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	6,013	4,188
Mortgage Portfolio Segment | Financing Receivables, 30 to 59 Days Past Due | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	6,013	4,188
Mortgage Portfolio Segment | Financing Receivables, 30 to 59 Days Past Due | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	0	0
Mortgage Portfolio Segment | Financing Receivables, 30 to 59 Days Past Due | Multi-Family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	0	0
Mortgage Portfolio Segment | Financing Receivables, 30 to 59 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	0	0
Mortgage Portfolio Segment | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	2,333	5,557
Mortgage Portfolio Segment | Financing Receivables, 60 to 89 Days Past Due | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	2,333	5,557
Mortgage Portfolio Segment | Financing Receivables, 60 to 89 Days Past Due | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	0	0
Mortgage Portfolio Segment | Financing Receivables, 60 to 89 Days Past Due | Multi-Family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	0	0
Mortgage Portfolio Segment | Financing Receivables, 60 to 89 Days Past Due | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	0	0
Commercial Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	30,436	15,391
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	31,994	29,381
Current	1,627,872	1,665,640
Total gross loans	1,659,866	1,695,021
Commercial Loans | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	10	425
Commercial Loans | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	1,548	13,565
Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	1,361	1,266
Recorded Investment greater than 90 days accruing	0	0
Total Past Due	2,633	3,114
Current	400,943	428,314
Total gross loans	403,576	431,428
Consumer Loans | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	716	1,238
Consumer Loans | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment past due	$ 556	$ 610

Loans Receivable and Allowanc_6

Loans Receivable and Allowance for Loan Losses (Summary of Loans Receivable by Portfolio Segment and Impairment Method) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	$ 71,271	$ 50,684
Collectively evaluated for impairment	7,199,594	7,203,218
Total gross loans	7,270,865	7,253,902
Mortgage Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	36,378	24,680
Collectively evaluated for impairment	5,171,045	5,102,773
Total gross loans	5,207,423	5,127,453
Commercial Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	32,824	23,747
Collectively evaluated for impairment	1,627,042	1,671,274
Total gross loans	1,659,866	1,695,021
Consumer Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	2,069	2,257
Collectively evaluated for impairment	401,507	429,171
Total gross loans	$ 403,576	$ 431,428

Loans Receivable and Allowanc_7

Loans Receivable and Allowance for Loan Losses (Summary of Allowance for Loan Losses by Portfolio Segment and Impairment Classification) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	$ 5,306		$ 1,165
Collectively evaluated for impairment	52,038		54,397
Total	57,344	$ 62,810	55,562	$ 53,910	$ 58,819	$ 60,195
Mortgage Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	908		1,026
Collectively evaluated for impairment	24,173		26,652
Total	25,081	27,280	27,678	27,495	27,161	28,052
Commercial Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	4,353		92
Collectively evaluated for impairment	25,990		25,601
Total	30,343	33,549	25,693	24,143	29,494	29,814
Consumer Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	45		47
Collectively evaluated for impairment	1,875		2,144
Total	$ 1,920	$ 1,981	$ 2,191	$ 2,272	$ 2,164	$ 2,329

Loans Receivable and Allowanc_8

Loans Receivable and Allowance For Loan Losses (Schedule of Troubled Debt Restructurings) (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)securitycounterparty	Sep. 30, 2018USD ($)counterpartysecurity	Sep. 30, 2019USD ($)counterpartySecurityLoan	Sep. 30, 2018USD ($)counterpartySecurityLoan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | counterparty	1	6	11	11
Pre-Modification Outstanding Recorded  Investment	$ 20	$ 6,948	$ 17,486	$ 13,692
Post-Modification Outstanding Recorded Investment	$ 16	$ 7,091	$ 16,620	$ 9,884
Mortgage Portfolio
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | counterparty	0	3	3	4
Pre-Modification Outstanding Recorded  Investment	$ 0	$ 693	$ 14,759	$ 811
Post-Modification Outstanding Recorded Investment	$ 0	$ 694	$ 14,726	$ 797
Mortgage Portfolio | Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | counterparty	0	3	2	4
Pre-Modification Outstanding Recorded  Investment	$ 0	$ 693	$ 749	$ 811
Post-Modification Outstanding Recorded Investment	$ 0	$ 694	$ 716	$ 797
Mortgage Portfolio | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | counterparty			1	0
Pre-Modification Outstanding Recorded  Investment			$ 14,010	$ 0
Post-Modification Outstanding Recorded Investment			$ 14,010	$ 0
Commercial Loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | counterparty	0	2	7	6
Pre-Modification Outstanding Recorded  Investment	$ 0	$ 5,919	$ 2,707	$ 12,545
Post-Modification Outstanding Recorded Investment	$ 0	$ 6,062	$ 1,878	$ 8,752
Consumer Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans	1	1	1	1
Pre-Modification Outstanding Recorded  Investment	$ 20	$ 336	$ 20	$ 336
Post-Modification Outstanding Recorded Investment	$ 16	$ 335	$ 16	$ 335

Loans Receivable and Allowanc_9

Loans Receivable and Allowance for Loan Losses (Schedule of Trouble Debt Restructuring Subsequently Defaulted) (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)SecurityLoan	Sep. 30, 2018USD ($)SecurityLoan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	1	3
Outstanding Recorded Investment | $	$ 578	$ 1,344
Mortgage Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	1	0
Outstanding Recorded Investment | $	$ 578	$ 0
Mortgage Portfolio | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	1	0
Outstanding Recorded Investment | $	$ 578	$ 0
Commercial Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | SecurityLoan	0	3
Outstanding Recorded Investment | $	$ 0	$ 1,344

Loans Receivable and Allowan_10

Loans Receivable and Allowance for Loan Losses (Schedule of Allowance for Loan Losses by Portfolio Segment) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 62,810	$ 58,819	$ 55,562	$ 60,195
Provision (credited) charged to operations	500	1,000	10,200	21,900
Recoveries of loans previously charged-off	493	636	1,248	1,392
Loans charged-off	(6,459)	(6,545)	(9,666)	(29,577)
Balance at end of period	57,344	53,910	57,344	53,910
Mortgage Portfolio Segment
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	27,280	27,161	27,678	28,052
Provision (credited) charged to operations	(2,092)	88	(2,814)	(716)
Recoveries of loans previously charged-off	24	303	361	435
Loans charged-off	(131)	(57)	(144)	(276)
Balance at end of period	25,081	27,495	25,081	27,495
Commercial Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	33,549	29,494	25,693	29,814
Provision (credited) charged to operations	2,880	915	13,337	22,740
Recoveries of loans previously charged-off	126	36	291	268
Loans charged-off	(6,212)	(6,302)	(8,978)	(28,679)
Balance at end of period	30,343	24,143	30,343	24,143
Consumer Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	1,981	2,164	2,191	2,329
Provision (credited) charged to operations	(288)	(3)	(323)	(124)
Recoveries of loans previously charged-off	343	297	596	689
Loans charged-off	(116)	(186)	(544)	(622)
Balance at end of period	$ 1,920	$ 2,272	$ 1,920	$ 2,272

Loans Receivable and Allowan_11

Loans Receivable and Allowance for Loan Losses (Summary of Impaired Loans Receivable by Class) (Detail) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2018
Loans with no related allowance
Loans with no related allowance, Unpaid Principal Balance	$ 23,196	$ 40,180	$ 40,180
Loans with no related allowance, Recorded Investment	18,603	31,118	31,118
Loans with no related allowance, Average Recorded Investment	19,314		32,156
Loans with no related allowance, Interest Income Recognized	985		1,012
Loans with an allowance recorded
Loans with an allowance recorded, Unpaid Principal Balance	54,265	20,059	20,059
Loans with an allowance recorded, Recorded Investment	52,668	19,566	19,566
Loans with an allowance recorded, Average Recorded Investment	53,884		21,712
Loans with an allowance recorded, Interest Income Recognized	1,080		953
Total impaired loans
Unpaid Principal Balance	77,462	60,239	60,239
Recorded Investment	71,271	50,684	50,684
Related Allowance	5,306	1,165	1,165
Average Recorded Investment	73,198	53,900	53,868
Interest Income Recognized	2,065		1,965
Mortgage Portfolio Segment
Loans with no related allowance
Loans with no related allowance, Unpaid Principal Balance	13,974	16,563	16,563
Loans with no related allowance, Recorded Investment	11,170	13,551	13,551
Loans with no related allowance, Average Recorded Investment	11,393		13,687
Loans with no related allowance, Interest Income Recognized	874		594
Loans with an allowance recorded
Loans with an allowance recorded, Unpaid Principal Balance	25,670	11,612	11,612
Loans with an allowance recorded, Recorded Investment	25,208	11,129	11,129
Loans with an allowance recorded, Average Recorded Investment	25,308		11,238
Loans with an allowance recorded, Interest Income Recognized	749		478
Total impaired loans
Unpaid Principal Balance	39,644	28,175	28,175
Recorded Investment	36,378	24,680	24,680
Related Allowance	908	1,026	1,026
Average Recorded Investment	36,701		24,925
Interest Income Recognized	1,623		1,072
Mortgage Portfolio Segment | Residential
Loans with no related allowance
Loans with no related allowance, Unpaid Principal Balance	13,974	15,013	15,013
Loans with no related allowance, Recorded Investment	11,170	12,005	12,005
Loans with no related allowance, Average Recorded Investment	11,393		12,141
Loans with no related allowance, Interest Income Recognized	874		594
Loans with an allowance recorded
Loans with an allowance recorded, Unpaid Principal Balance	10,640	10,573	10,573
Loans with an allowance recorded, Recorded Investment	10,177	10,090	10,090
Loans with an allowance recorded, Average Recorded Investment	10,262		10,186
Loans with an allowance recorded, Interest Income Recognized	322		425
Total impaired loans
Unpaid Principal Balance	24,614	25,586	25,586
Recorded Investment	21,347	22,095	22,095
Related Allowance	800	954	954
Average Recorded Investment	21,655		22,327
Interest Income Recognized	1,196		1,019
Mortgage Portfolio Segment | Commercial
Loans with no related allowance
Loans with no related allowance, Unpaid Principal Balance	0	1,550	1,550
Loans with no related allowance, Recorded Investment	0	1,546	1,546
Loans with no related allowance, Average Recorded Investment	0		1,546
Loans with no related allowance, Interest Income Recognized	0		0
Loans with an allowance recorded
Loans with an allowance recorded, Unpaid Principal Balance	15,030	1,039	1,039
Loans with an allowance recorded, Recorded Investment	15,031	1,039	1,039
Loans with an allowance recorded, Average Recorded Investment	15,046		1,052
Loans with an allowance recorded, Interest Income Recognized	427		53
Total impaired loans
Unpaid Principal Balance	15,030	2,589	2,589
Recorded Investment	15,031	2,585	2,585
Related Allowance	108	72	72
Average Recorded Investment	15,046		2,598
Interest Income Recognized	427		53
Commercial Loans
Loans with no related allowance
Loans with no related allowance, Unpaid Principal Balance	7,508	21,746	21,746
Loans with no related allowance, Recorded Investment	6,274	16,254	16,254
Loans with no related allowance, Average Recorded Investment	6,564		17,083
Loans with no related allowance, Interest Income Recognized	52		328
Loans with an allowance recorded
Loans with an allowance recorded, Unpaid Principal Balance	27,674	7,493	7,493
Loans with an allowance recorded, Recorded Investment	26,550	7,493	7,493
Loans with an allowance recorded, Average Recorded Investment	27,851		9,512
Loans with an allowance recorded, Interest Income Recognized	295		435
Total impaired loans
Unpaid Principal Balance	35,183	29,239	29,239
Recorded Investment	32,824	23,747	23,747
Related Allowance	4,353	92	92
Average Recorded Investment	34,415		26,595
Interest Income Recognized	347		763
Consumer Loans
Loans with no related allowance
Loans with no related allowance, Unpaid Principal Balance	1,714	1,871	1,871
Loans with no related allowance, Recorded Investment	1,159	1,313	1,313
Loans with no related allowance, Average Recorded Investment	1,357		1,386
Loans with no related allowance, Interest Income Recognized	59		90
Loans with an allowance recorded
Loans with an allowance recorded, Unpaid Principal Balance	921	954	954
Loans with an allowance recorded, Recorded Investment	910	944	944
Loans with an allowance recorded, Average Recorded Investment	725		962
Loans with an allowance recorded, Interest Income Recognized	36		40
Total impaired loans
Unpaid Principal Balance	2,635	2,825	2,825
Recorded Investment	2,069	2,257	2,257
Related Allowance	45	$ 47	47
Average Recorded Investment	2,082		2,348
Interest Income Recognized	$ 95		$ 130

Loans Receivable and Allowan_12

Loans Receivable and Allowance for Loan Losses (Summary of Loans Receivable by Credit Quality Risk Rating Indicator) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 7,270,865	$ 7,253,902
Total classified and criticized
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	212,218	162,966
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	120,108	87,801
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	91,245	74,242
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	865	923
Loss
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	7,058,647	7,090,936
Mortgage Portfolio Segment
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	5,207,423	5,127,453
Mortgage Portfolio Segment | Total classified and criticized
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	65,212	47,146
Mortgage Portfolio Segment | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	39,929	19,795
Mortgage Portfolio Segment | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	25,283	27,351
Mortgage Portfolio Segment | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment | Loss
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	5,142,211	5,080,307
Mortgage Portfolio Segment | Residential
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,072,175	1,099,464
Mortgage Portfolio Segment | Residential | Total classified and criticized
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	10,198	12,949
Mortgage Portfolio Segment | Residential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,804	5,071
Mortgage Portfolio Segment | Residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	8,394	7,878
Mortgage Portfolio Segment | Residential | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment | Residential | Loss
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment | Residential | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,061,977	1,086,515
Mortgage Portfolio Segment | Commercial
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	2,437,117	2,299,313
Mortgage Portfolio Segment | Commercial | Total classified and criticized
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	48,833	27,788
Mortgage Portfolio Segment | Commercial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	38,125	14,496
Mortgage Portfolio Segment | Commercial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	10,708	13,292
Mortgage Portfolio Segment | Commercial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment | Commercial | Loss
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment | Commercial | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	2,388,284	2,271,525
Mortgage Portfolio Segment | Multi-Family
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,298,630	1,339,677
Mortgage Portfolio Segment | Multi-Family | Total classified and criticized
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	228
Mortgage Portfolio Segment | Multi-Family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	228
Mortgage Portfolio Segment | Multi-Family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment | Multi-Family | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment | Multi-Family | Loss
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment | Multi-Family | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,298,630	1,339,449
Mortgage Portfolio Segment | Construction
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	399,501	388,999
Mortgage Portfolio Segment | Construction | Total classified and criticized
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	6,181	6,181
Mortgage Portfolio Segment | Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment | Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	6,181	6,181
Mortgage Portfolio Segment | Construction | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment | Construction | Loss
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Mortgage Portfolio Segment | Construction | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	393,320	382,818
Commercial Loans
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,659,866	1,695,021
Commercial Loans | Total classified and criticized
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	144,737	113,499
Commercial Loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	79,721	67,396
Commercial Loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	64,151	45,180
Commercial Loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	865	923
Commercial Loans | Loss
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Commercial Loans | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,515,129	1,581,522
Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	403,576	431,428
Consumer Loans | Total classified and criticized
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	2,269	2,321
Consumer Loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	458	610
Consumer Loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,811	1,711
Consumer Loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Consumer Loans | Loss
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	0	0
Consumer Loans | Pass/Watch
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 401,307	$ 429,107

Deposits (Detail)

Deposits (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Banking and Thrift [Abstract]
Savings	$ 985,575	$ 1,051,922
Money market	1,593,681	1,496,310
NOW	1,853,650	2,049,645
Non-interest bearing	1,683,772	1,481,753
Certificates of deposit	844,693	750,492
Total deposits	$ 6,961,371	$ 6,830,122

Components of Net Periodic Be_3

Components of Net Periodic Benefit Cost (Narrative) (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	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 Be_4

Components of Net Periodic Benefit Cost (Benefit Cost (Increase) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Pension benefits
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	299	273	899	821
Expected return on plan assets	(640)	(693)	(1,922)	(2,079)
Amortization of prior service cost	0	0	0	0
Amortization of the net loss (gain)	254	199	762	597
Net periodic benefit (decrease) increase in benefit cost	(87)	(221)	(261)	(661)
Other post-retirement benefits
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Service cost	20	29	60	87
Interest cost	209	196	628	590
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Amortization of the net loss (gain)	(206)	(99)	(620)	(297)
Net periodic benefit (decrease) increase in benefit cost	$ 23	$ 126	$ 68	$ 380

Impact of Recent Accounting P_2

Impact of Recent Accounting Pronouncements (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating lease right-of-use assets	$ 43,483	$ 44,900
Operating lease liabilities	$ 44,562	46,100
Accounting Standards Update 2016-02
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating lease right-of-use assets		44,900
Operating lease liabilities		$ 46,100

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Detail) $ in Millions	Sep. 30, 2019USD ($)security	Dec. 31, 2018USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Restricted cash | $	$ 27.3	$ 35
Valuation, Market Approach | Measurement Input, Cost to Sell | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans, measurement input	0.05
Foreclosed assets, measurement input	0.05
Valuation, Market Approach | Measurement Input, Cost to Sell | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans, measurement input	0.10
Foreclosed assets, measurement input	0.10

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	$ 1,052,995	$ 1,063,079
Equity securities	728	635
Derivative liabilities	54,700
Foreclosed assets	1,534	1,565
Quoted Prices in Active  Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Equity securities	728	635
Derivative assets	0	0
Derivative liabilities	0	0
Significant Other Observable  Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	1,052,995	1,063,079
Equity securities	0	0
Derivative assets	54,743	15,634
Derivative liabilities	54,838	14,766
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Equity securities	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Mortgage-Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	1,023,541	1,034,969
Mortgage-Backed Securities | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Mortgage-Backed Securities | Significant Other Observable  Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	1,023,541	1,034,969
Mortgage-Backed Securities | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
State And Municipal Obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	4,088	2,912
State And Municipal Obligations | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
State And Municipal Obligations | Significant Other Observable  Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	4,088	2,912
State And Municipal Obligations | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Corporate Obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	25,366	25,198
Corporate Obligations | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Corporate Obligations | Significant Other Observable  Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	25,366	25,198
Corporate Obligations | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Measured on a Recurring Basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	1,052,995	1,063,079
Equity securities	728	635
Derivative assets	54,743	15,634
Total assets at fair value	1,108,466	1,079,348
Derivative liabilities	54,838	14,766
Measured on a Recurring Basis | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Equity securities	728	635
Derivative assets	0	0
Total assets at fair value	728	635
Derivative liabilities	0	0
Measured on a Recurring Basis | Significant Other Observable  Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	1,052,995	1,063,079
Equity securities	0	0
Derivative assets	54,743	15,634
Total assets at fair value	1,107,738	1,078,713
Derivative liabilities	54,838	14,766
Measured on a Recurring Basis | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Equity securities	0	0
Derivative assets	0	0
Total assets at fair value	0	0
Derivative liabilities	0	0
Measured on a Recurring Basis | Mortgage-Backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	1,023,541	1,034,969
Measured on a Recurring Basis | Mortgage-Backed Securities | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Measured on a Recurring Basis | Mortgage-Backed Securities | Significant Other Observable  Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	1,023,541	1,034,969
Measured on a Recurring Basis | Mortgage-Backed Securities | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Measured on a Recurring Basis | State And Municipal Obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	4,088	2,912
Measured on a Recurring Basis | State And Municipal Obligations | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Measured on a Recurring Basis | State And Municipal Obligations | Significant Other Observable  Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	4,088	2,912
Measured on a Recurring Basis | State And Municipal Obligations | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Measured on a Recurring Basis | Corporate Obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	25,366	25,198
Measured on a Recurring Basis | Corporate Obligations | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Measured on a Recurring Basis | Corporate Obligations | Significant Other Observable  Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	25,366	25,198
Measured on a Recurring Basis | Corporate Obligations | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities:	0	0
Measured on a Non-Recurring Basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	20,559	5,850
Loans measured for impairment based on the fair value of the underlying collateral	19,025	4,285
Foreclosed assets	1,534	1,565
Measured on a Non-Recurring Basis | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	0	0
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 | Significant Other Observable  Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	0	0
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 | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	20,559	5,850
Loans measured for impairment based on the fair value of the underlying collateral	19,025	4,285
Foreclosed assets	$ 1,534	$ 1,565

Fair Value Measurements (Financ

Fair Value Measurements (Financial Instruments) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financial assets:
Cash and cash equivalents	$ 260,860	$ 142,661
Available for sale debt securities, at fair value	1,052,995	1,063,079
Investment securities held to maturity, fair value	476,698	479,740
Federal Home Loan Bank stock	68,721	68,813
Equity securities	728	635
Loans, net of allowance for loan losses	7,209,650	7,195,026
Financial liabilities:
Certificates of deposit	844,693	750,492
Total deposits	6,961,371	6,830,122
Borrowed funds	1,380,063	1,442,282
Derivative liabilities	54,700
Quoted Prices in Active  Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	260,860	142,661
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	4,948	4,896
Federal Home Loan Bank stock	68,721	68,813
Equity securities	728	635
Loans, net of allowance for loan losses	0	0
Derivative assets	0	0
Financial liabilities:
Deposits other than certificates of deposits	6,116,678	6,079,630
Certificates of deposit	0	0
Total deposits	6,116,678	6,079,630
Borrowed funds	0	0
Derivative liabilities	0	0
Significant Other Observable  Inputs (Level 2)
Financial assets:
Cash and cash equivalents	0	0
Available for sale debt securities, at fair value	1,052,995	1,063,079
Investment securities held to maturity, fair value	471,750	474,844
Federal Home Loan Bank stock	0	0
Equity securities	0	0
Loans, net of allowance for loan losses	0	0
Derivative assets	54,743	15,634
Financial liabilities:
Deposits other than certificates of deposits	0	0
Certificates of deposit	844,095	746,753
Total deposits	844,095	746,753
Borrowed funds	1,382,650	1,431,001
Derivative liabilities	54,838	14,766
Significant Unobservable Inputs (Level 3)
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
Federal Home Loan Bank stock	0	0
Equity securities	0	0
Loans, net of allowance for loan losses	7,260,050	7,104,380
Derivative assets	0	0
Financial liabilities:
Deposits other than certificates of deposits	0	0
Certificates of deposit	0	0
Total deposits	0	0
Borrowed funds	0	0
Derivative liabilities	0	0
Agency Obligations | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Financial assets:
Investment securities held to maturity, fair value	4,948	4,896
Agency Obligations | Significant Other Observable  Inputs (Level 2)
Financial assets:
Investment securities held to maturity, fair value	0	0
Agency Obligations | Significant Unobservable Inputs (Level 3)
Financial assets:
Investment securities held to maturity, fair value	0	0
Mortgage-Backed Securities
Financial assets:
Available for sale debt securities, at fair value	1,023,541	1,034,969
Investment securities held to maturity, fair value	137	190
Mortgage-Backed Securities | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Mortgage-Backed Securities | Significant Other Observable  Inputs (Level 2)
Financial assets:
Available for sale debt securities, at fair value	1,023,541	1,034,969
Investment securities held to maturity, fair value	137	190
Mortgage-Backed Securities | Significant Unobservable Inputs (Level 3)
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
Financial assets:
Available for sale debt securities, at fair value	4,088	2,912
Investment securities held to maturity, fair value	460,809	464,363
State And Municipal Obligations | Quoted Prices in Active  Markets for Identical Assets (Level 1)
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 | Significant Other Observable  Inputs (Level 2)
Financial assets:
Available for sale debt securities, at fair value	4,088	2,912
Investment securities held to maturity, fair value	460,809	464,363
State And Municipal Obligations | Significant Unobservable Inputs (Level 3)
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Corporate Obligations
Financial assets:
Available for sale debt securities, at fair value	25,366	25,198
Investment securities held to maturity, fair value	10,804	10,291
Corporate Obligations | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Corporate Obligations | Significant Other Observable  Inputs (Level 2)
Financial assets:
Available for sale debt securities, at fair value	25,366	25,198
Investment securities held to maturity, fair value	10,804	10,291
Corporate Obligations | Significant Unobservable Inputs (Level 3)
Financial assets:
Available for sale debt securities, at fair value	0	0
Investment securities held to maturity, fair value	0	0
Carrying Value
Financial assets:
Cash and cash equivalents	260,860	142,661
Available for sale debt securities, at fair value	1,052,995	1,063,079
Investment securities held to maturity, fair value	461,738	479,425
Federal Home Loan Bank stock	68,721	68,813
Equity securities	728	635
Loans, net of allowance for loan losses	7,209,650	7,195,026
Derivative assets	54,743	15,634
Financial liabilities:
Deposits other than certificates of deposits	6,116,678	6,079,630
Certificates of deposit	844,693	750,492
Total deposits	6,961,371	6,830,122
Borrowed funds	1,380,063	1,442,282
Derivative liabilities	54,838	14,766
Carrying Value | Agency Obligations
Financial assets:
Investment securities held to maturity, fair value	4,948	4,989
Carrying Value | Mortgage-Backed Securities
Financial assets:
Available for sale debt securities, at fair value	1,023,541	1,034,969
Investment securities held to maturity, fair value	134	187
Carrying Value | State And Municipal Obligations
Financial assets:
Available for sale debt securities, at fair value	4,088	2,912
Investment securities held to maturity, fair value	445,896	463,801
Carrying Value | Corporate Obligations
Financial assets:
Available for sale debt securities, at fair value	25,366	25,198
Investment securities held to maturity, fair value	10,760	10,448
Fair Value
Financial assets:
Cash and cash equivalents	260,860	142,661
Available for sale debt securities, at fair value	1,052,995	1,063,079
Investment securities held to maturity, fair value	476,698	479,740
Federal Home Loan Bank stock	68,721	68,813
Equity securities	728	635
Loans, net of allowance for loan losses	7,260,050	7,104,380
Derivative assets	54,743	15,634
Financial liabilities:
Deposits other than certificates of deposits	6,116,678	6,079,630
Certificates of deposit	844,095	746,753
Total deposits	6,960,773	6,826,383
Borrowed funds	1,382,650	1,431,001
Derivative liabilities	54,838	14,766
Fair Value | Agency Obligations
Financial assets:
Investment securities held to maturity, fair value	4,948	4,896
Fair Value | Mortgage-Backed Securities
Financial assets:
Available for sale debt securities, at fair value	1,023,541	1,034,969
Investment securities held to maturity, fair value	137	190
Fair Value | State And Municipal Obligations
Financial assets:
Available for sale debt securities, at fair value	4,088	2,912
Investment securities held to maturity, fair value	460,809	464,363
Fair Value | Corporate Obligations
Financial assets:
Available for sale debt securities, at fair value	25,366	25,198
Investment securities held to maturity, fair value	$ 10,804	$ 10,291

Other Comprehensive (Loss) In_3

Other Comprehensive (Loss) Income (Components of OCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Unrealized gains and losses on available for sale debt securities:
Net unrealized gains (losses) arising during the period	$ 3,594	$ (6,547)	$ 27,291	$ (24,310)
Reclassification adjustment for gains included in net income	0	0	0	0
Total	3,594	(6,547)	27,291	(24,310)
Unrealized (losses) gains on Derivatives (cash flow hedges)	188	62	(1,119)	985
Amortization related to post-retirement obligations	48	100	78	283
Total other comprehensive income (loss)	3,830	(6,385)	26,250	(23,042)
Unrealized gains and losses on available for sale debt securities:
Net unrealized gains (losses) arising during the period	(980)	1,727	(7,437)	6,413
Reclassification adjustment for gains included in net income	0	0	0	0
Total	(980)	1,727	(7,437)	6,413
Unrealized gains on derivatives (cash flow hedges)	(51)	(16)	306	(261)
Amortization related to post-retirement obligations	(13)	(25)	(21)	(72)
Total other comprehensive income (loss)	(1,044)	1,686	(7,152)	6,080
Unrealized gains and losses on available for sale debt securities:
Net unrealized gains (losses) arising during the period	2,614	(4,820)	19,854	(17,897)
Reclassification adjustment for gains included in net income	0	0	0	0
Total	2,614	(4,820)	19,854	(17,897)
Unrealized gains on derivatives (cash flow hedges)	137	46	(813)	724
Amortization related to post-retirement obligations	35	75	57	211
Total other comprehensive income (loss)	$ 2,786	$ (4,699)	$ 19,098	$ (16,962)

Other Comprehensive (Loss) In_4

Other Comprehensive (Loss) Income (Components of AOCI) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,391,446	$ 1,311,262	$ 1,358,980	$ 1,298,661
Current - period other comprehensive income (loss)	2,786	(4,699)	19,098	(16,962)
Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01			4,350
Ending Balance	1,397,833	1,331,589	1,397,833	1,331,589
Unrealized Gains on Available for Sale Debt Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	7,635	(16,553)	(9,605)	(3,292)
Current - period other comprehensive income (loss)	2,614	(4,820)	19,854	(17,897)
Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01			0	(184)
Ending Balance	10,249	(21,373)	10,249	(21,373)
Post-retirement obligations
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3,603)	(4,710)	(3,625)	(4,846)
Current - period other comprehensive income (loss)	35	75	57	211
Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01			0	0
Ending Balance	(3,568)	(4,635)	(3,568)	(4,635)
Unrealized gains (losses) on derivatives (cash flow hedges)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(56)	1,351	894	673
Current - period other comprehensive income (loss)	137	46	(813)	724
Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01			0	0
Ending Balance	81	1,397	81	1,397
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	3,976	(19,912)	(12,336)	(7,465)
Current - period other comprehensive income (loss)	2,786	(4,699)	19,098	(16,962)
Reclassification of unrealized gains on equity securities due to the adoption of ASU No. 2016-01			0	(184)
Ending Balance	$ 6,762	$ (24,611)	$ 6,762	$ (24,611)

Other Comprehensive (Loss) In_5

Other Comprehensive (Loss) Income (Reclassifications Out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Compensation and employee benefits	$ 29,376	$ 27,546	$ 86,735	$ 83,398
Income tax expense	9,938	8,575	26,429	19,504
Net income	(31,399)	(35,468)	(86,682)	(82,624)
Reclassification adjustment | Post-retirement obligations
Accumulated Other Comprehensive Income (Loss) [Line Items]
Compensation and employee benefits	48	100	142	300
Income tax expense	(13)	(25)	(39)	(78)
Net income	$ 35	$ 75	$ 103	$ 222

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities (Narrative) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)instrumentcounterparty	Dec. 31, 2018USD ($)instrument
Derivative [Line Items]
Derivative instruments in accumulated other comprehensive income reclassified to interest expense	$ 295
Derivative liability, notional amount	$ 130,000
Number of counterparties | counterparty	4
Counterparty in liability position | counterparty	4
Derivative liabilities	$ 54,700
Collateral against obligations	54,400
Derivatives Not Designated as a Hedging Instruments
Derivative [Line Items]
Credit derivatives, fair value	$ 61	$ 251
Derivatives Not Designated as a Hedging Instruments | Interest rate products
Derivative [Line Items]
Number of derivative instruments held (in instrument) | instrument	82	62
Derivative notional amount	$ 1,410,000	$ 1,010,000
Derivatives Not Designated as a Hedging Instruments | Credit contracts
Derivative [Line Items]
Number of derivative instruments held (in instrument) | instrument	13	7
Derivative notional amount	$ 105,000	$ 66,800
Designated as Hedging Instrument
Derivative [Line Items]
Number of outstanding derivatives | instrument	5

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities (Fair Value) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Derivatives Not Designated as a Hedging Instruments
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 54,632	$ 14,405
Liability Derivatives	54,838	14,766
Derivatives Not Designated as a Hedging Instruments | Other Assets | Interest rate products
Derivatives, Fair Value [Line Items]
Asset Derivatives	54,571	14,154
Derivatives Not Designated as a Hedging Instruments | Other Assets | Credit contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives	61	251
Derivatives Not Designated as a Hedging Instruments | Other Liabilities | Interest rate products
Derivatives, Fair Value [Line Items]
Liability Derivatives	54,838	14,766
Derivatives Not Designated as a Hedging Instruments | Other Liabilities | Credit contracts
Derivatives, Fair Value [Line Items]
Liability Derivatives	0	0
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Asset Derivatives	111	1,229
Liability Derivatives	0	0
Designated as Hedging Instrument | Other Assets | Interest rate products
Derivatives, Fair Value [Line Items]
Asset Derivatives	111	1,229
Designated as Hedging Instrument | Other Liabilities | Interest rate products
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 0	$ 0

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities (Gains and Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivatives Not Designated as a Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives	$ 2,236	$ (118)	$ 156	$ 201
Derivatives Not Designated as a Hedging Instruments | Interest rate products | Other income
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives	2,307	27	212	265
Derivatives Not Designated as a Hedging Instruments | Credit contracts | Other income
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives	(71)	(145)	(56)	(64)
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives	157	105	466	(185)
Designated as Hedging Instrument | Interest rate products | Other income
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Income on derivatives	$ 157	$ 105	$ 466	$ (185)

Revenue Recognition (Summary of

Revenue Recognition (Summary of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Percentage of total revenue excluded from adoption of 606	83.80%	85.10%	85.90%	86.10%
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 10,944	$ 9,412	$ 30,530	$ 27,926
Total out-of-scope non-interest income	7,103	6,504	15,539	15,134
Total non-interest income	18,047	15,916	46,069	43,060
Wealth Management Fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	6,084	4,570	16,406	13,572
Banking service charges and other fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4,860	4,842	14,124	14,354
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	3,386	3,356	9,853	9,910
Debit card and ATM fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 1,474	$ 1,486	$ 4,271	$ 4,444

Leases (Additional Information)

Leases (Additional Information) (Detail) - USD ($) $ in Thousands	Jan. 01, 2019	Sep. 30, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 44,900	$ 43,483
Operating lease liabilities	46,100	$ 44,562
Deferred gains associated with sales leaseback transactions	$ 5,900
Weighted-average remaining lease term		9 years 7 months 6 days
Weighted-average discount rate		3.45%
Due in 2019			$ 8,000
Due in 2020			7,600
Due in 2021			5,400
Due in 2022			3,800
Due in 2023			3,400
Due thereafter			$ 10,700
T&L
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets		$ 1,900

Leases (Supplemental Balance Sh

Leases (Supplemental Balance Sheet Information) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 43,483	$ 44,900
Operating lease liabilities	$ 44,562	$ 46,100

Leases (Supplemental Cash Flow

Leases (Supplemental Cash Flow and Lease Cost Information) (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Cash Flow, Operating Activities, Lessee [Abstract]
Operating lease cost	$ 2,127	$ 6,303
Variable lease cost	727	2,083
Total Lease Cost	$ 2,854	8,386
Operating cash flows from operating leases		$ 6,179

Leases (Future Minimum Payments

Leases (Future Minimum Payments) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Leases [Abstract]
Remainder of 2019	$ 2,125
2020	8,316
2021	6,064
2022	5,263
2023	4,752
Thereafter	26,541
Total future minimum lease payments	53,061
Amounts representing interest	8,499
Present value of net future minimum lease payments	$ 44,562	$ 46,100