Brookline Bancorp (BRKL) 10-Q 6 Nov 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Oct. 31, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2019
Entity File Number	0-23695
Entity Registrant Name	BROOKLINE BANCORP INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-3402944
Entity Address, Address Line One	131 Clarendon Street
Entity Address, City or Town	Boston
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02116
City Area Code	617
Local Phone Number	425-4600
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock
Trading Symbol	BRKL
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding (in shares)		79,767,595
Entity Central Index Key	0001049782
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false

Unaudited Consolidated Balance

Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 93,841	$ 47,542
Short-term investments	84,689	42,042
Total cash and cash equivalents	178,530	89,584
Investment securities available-for-sale	467,339	502,793
Investment securities held-to-maturity (fair value of $95,802 and $112,830, respectively)	95,163	114,776
Equity securities held-for-trading	4,581	4,207
Total investment securities	567,083	621,776
Loans held-for-sale	0	3,247
Total loans and leases	6,646,821	6,303,516
Allowance for loan and lease losses	(59,135)	(58,692)
Net loans and leases	6,587,686	6,244,824
Restricted equity securities	57,896	61,751
Premises and equipment, net of accumulated depreciation of $75,154 and $70,140, respectively	75,229	76,382
Right-of-use asset operating leases	26,216
Deferred tax asset	25,204	21,495
Goodwill	160,427	160,427
Identified intangible assets, net of accumulated amortization of $37,061 and $35,818, respectively	4,843	6,086
Other real estate owned (OREO) and repossessed assets, net	2,132	4,019
Other assets	193,190	103,214
Total assets	7,878,436	7,392,805
Deposits:
Demand checking accounts	1,106,684	1,033,551
Interest-bearing deposits:
NOW accounts	340,321	336,317
Savings accounts	604,481	619,961
Money market accounts	1,666,231	1,675,050
Certificate of deposit accounts	2,011,622	1,789,165
Total interest-bearing deposits	4,622,655	4,420,493
Total deposits	5,729,339	5,454,044
Borrowed funds:
Advances from the Federal Home Loan Bank of Boston (FHLBB)	854,481	784,375
Subordinated debentures and notes	83,551	83,433
Other borrowed funds	48,373	52,734
Total borrowed funds	986,405	920,542
Operating lease liabilities	26,216
Mortgagors' escrow accounts	7,072	7,426
Accrued expenses and other liabilities	197,093	100,174
Total liabilities	6,946,125	6,482,186
Commitments and contingencies
Brookline Bancorp, Inc. stockholders' equity:
Common stock, $0.01 par value; 200,000,000 shares authorized; 85,177,172 shares issued and 85,177,172 shares issued, respectively	852	852
Additional paid-in capital	735,928	755,629
Retained earnings, partially restricted	252,435	212,838
Accumulated other comprehensive loss	2,775	(9,460)
Treasury stock, at cost; 5,003,127 shares and 5,020,025 shares, respectively	(59,176)	(59,120)
Unallocated common stock held by Employee Stock Ownership Plan (ESOP); 92,337 shares and 109,950 shares, respectively	(503)	(599)
Total Brookline Bancorp, Inc. stockholders' equity	932,311	900,140
Noncontrolling interest in subsidiary	0	10,479
Total stockholders' equity	932,311	910,619
Total liabilities and stockholders' equity	7,878,436	7,392,805
Commercial real estate loans
ASSETS
Total loans and leases	3,589,451	3,351,736
Commercial loans and leases
ASSETS
Total loans and leases	1,850,388	1,768,958
Consumer loans
ASSETS
Total loans and leases	$ 1,206,982	$ 1,182,822

Unaudited Consolidated Balanc_2

Unaudited Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Investment securities held to maturity, fair value	$ 95,802	$ 112,830
Premises and equipment, accumulated depreciation and amortization	75,154	70,140
Identified intangible assets, accumulated amortization	$ 37,061	$ 35,818
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	85,177,172	85,177,172
Treasury stock, shares	5,003,127	5,020,025
Unallocated common stock held by ESOP, shares	92,337	109,950

Unaudited Consolidated Statemen

Unaudited 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 and dividend income:
Loans and leases	$ 83,566	$ 75,877	$ 247,036	$ 216,478
Debt securities	2,977	3,585	9,371	10,471
Marketable and restricted equity securities	876	1,029	2,664	2,956
Short-term investments	487	145	1,105	444
Total interest and dividend income	87,906	80,636	260,176	230,349
Interest expense:
Deposits	18,300	11,916	51,960	28,234
Borrowed funds	6,370	6,388	18,847	17,575
Total interest expense	24,670	18,304	70,807	45,809
Net interest income	63,236	62,332	189,369	184,540
Provision for credit losses	871	2,717	5,981	4,828
Net interest income after provision for credit losses	62,365	59,615	183,388	179,712
Non-interest income:
Loan level derivative income, net	2,251	2,192	5,768	3,629
(Loss) gain on investment securities, net	(116)	0	375	1,162
Gain on sales of loans and leases held-for-sale	550	535	1,400	1,556
Other	1,815	1,277	5,051	3,648
Total non-interest income	7,929	7,069	22,037	18,763
Non-interest expense:
Compensation and employee benefits	24,871	22,338	72,567	67,217
Occupancy	3,895	3,913	11,594	11,751
Equipment and data processing	4,749	4,601	14,051	13,587
Professional services	1,083	1,075	3,246	3,274
FDIC insurance	54	846	1,392	1,995
Advertising and marketing	1,035	1,068	3,216	3,243
Amortization of identified intangible assets	421	537	1,243	1,543
Merger and restructuring expense	1,125	22	1,125	3,261
Other	2,958	2,910	10,232	9,079
Total non-interest expense	40,191	37,310	118,666	114,950
Income before provision for income taxes	30,103	29,374	86,759	83,525
Provision for income taxes	7,507	6,140	21,182	19,134
Net income before noncontrolling interest in subsidiary	22,596	23,234	65,577	64,391
Less: net income attributable to noncontrolling interest in subsidiary	0	774	43	2,467
Net income attributable to Brookline Bancorp, Inc.	$ 22,596	$ 22,460	$ 65,534	$ 61,924
Earnings per common share:
Basic (in dollars per share)	$ 0.28	$ 0.28	$ 0.82	$ 0.78
Diluted (in dollars per share)	$ 0.28	$ 0.28	$ 0.82	$ 0.78
Weighted average common shares outstanding during the year:
Basic (in shares)	79,700,403	80,315,050	79,676,456	79,471,238
Diluted (in shares)	79,883,510	80,515,467	79,867,683	79,740,992
Dividends paid per common share (in dollars per share)	$ 0.11	$ 0.100	$ 0.325	$ 0.290
Deposit fees
Non-interest income:
Non-interest income, fees	$ 2,710	$ 2,648	$ 7,913	$ 7,731
Loan fees
Non-interest income:
Non-interest income, fees	$ 719	$ 417	$ 1,530	$ 1,037

Unaudited Consolidated Statem_2

Unaudited 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 before noncontrolling interest in subsidiary	$ 22,596	$ 23,234	$ 65,577	$ 64,391
Investment securities available-for-sale:
Unrealized securities holding gains (losses)	2,098	(2,803)	15,696	(12,449)
Income tax (expense) benefit	(464)	619	(3,461)	2,747
Net unrealized securities holding gains (losses) before reclassification adjustments, net of taxes	1,634	(2,184)	12,235	(9,702)
Less reclassification adjustments for securities gains included in net income:
Loss on sales of securities, net	0	0	0	(68)
Income tax benefit	0	0	0	15
Net reclassification adjustments for securities gains included in net income	0	0	0	(53)
Net unrealized securities holding gains (losses)	1,634	(2,184)	12,235	(9,649)
Comprehensive income	24,230	21,050	77,812	54,742
Less: net income attributable to noncontrolling interest in subsidiary	0	774	43	2,467
Comprehensive income attributable to Brookline Bancorp, Inc.	$ 24,230	$ 20,276	$ 77,769	$ 52,275

Unaudited Consolidated Statem_3

Unaudited Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Unallocated Common Stock Held by ESOP	Total Brookline Bancorp, Inc. Stockholders' Equity	Noncontrolling Interest in Subsidiary
Balance at Dec. 31, 2017	$ 812,583	$ 817	$ 699,976	$ 161,217	$ (5,950)	$ (51,454)	$ (776)	$ 803,830	$ 8,753
Increase (Decrease) in Stockholders' Equity
Net income attributable to Brookline Bancorp, Inc.	61,924			61,924				61,924
Net income attributable to noncontrolling interest in subsidiary	2,467								2,467
Common stock issued for acquisition	55,183	35	55,148					55,183
Issuance of noncontrolling interest	130								130
Other comprehensive income (loss)	(9,649)				(9,649)			(9,649)
Common stock dividends	(22,990)			(22,990)				(22,990)
Dividend distribution to owners of noncontrolling interest in subsidiary	(1,893)								(1,893)
Restricted stock awards issued, net of awards surrendered	1,648		(1,472)			3,120		1,648
Common stock held by ESOP committed to be released	422		289				133	422
Balance at Sep. 30, 2018	899,825	852	753,941	200,151	(15,599)	(48,334)	(643)	890,368	9,457
Balance at Jun. 30, 2018	886,368	852	756,254	185,734	(13,415)	(51,454)	(688)	877,283	9,085
Increase (Decrease) in Stockholders' Equity
Net income attributable to Brookline Bancorp, Inc.	22,460			22,460				22,460
Net income attributable to noncontrolling interest in subsidiary	774								774
Common stock issued for acquisition	2		2					2
Issuance of noncontrolling interest	1								1
Other comprehensive income (loss)	(2,184)				(2,184)			(2,184)
Common stock dividends	(8,043)			(8,043)				(8,043)
Dividend distribution to owners of noncontrolling interest in subsidiary	(1,893)								(1,893)
Redemption of noncontrolling interest in subsidiary	1,490								1,490
Compensation under recognition and retention plan	702		(2,418)			3,120		702
Common stock held by ESOP committed to be released	148		103				45	148
Balance at Sep. 30, 2018	899,825	852	753,941	200,151	(15,599)	(48,334)	(643)	890,368	9,457
Balance at Dec. 31, 2018	910,619	852	755,629	212,838	(9,460)	(59,120)	(599)	900,140	10,479
Increase (Decrease) in Stockholders' Equity
Net income attributable to Brookline Bancorp, Inc.	65,534			65,534				65,534
Net income attributable to noncontrolling interest in subsidiary	43								43
Other comprehensive income (loss)	12,235				12,235			12,235
Common stock dividends	(25,937)			(25,937)				(25,937)
Dividend distribution to owners of noncontrolling interest in subsidiary	(930)		(930)					(930)
Redemption of noncontrolling interest in subsidiary	(29,219)		(18,697)					(18,697)	(10,522)
Restricted stock awards issued, net of awards surrendered	1,575		(239)			1,814		1,575
Treasury stock, repurchase shares	(1,870)					(1,870)		(1,870)
Common stock held by ESOP committed to be released	261		165				96	261
Balance at Sep. 30, 2019	932,311	852	735,928	252,435	2,775	(59,176)	(503)	932,311	0
Balance at Jun. 30, 2019	918,468	852	737,584	238,625	1,141	(59,199)	(535)	918,468	0
Increase (Decrease) in Stockholders' Equity
Net income attributable to Brookline Bancorp, Inc.	22,596			22,596				22,596
Net income attributable to noncontrolling interest in subsidiary	0
Other comprehensive income (loss)	1,634				1,634			1,634
Common stock dividends	(8,786)			(8,786)				(8,786)
Dividend distribution to owners of noncontrolling interest in subsidiary	(1)		(1)					(1)
Redemption of noncontrolling interest in subsidiary	0
Restricted stock awards issued, net of awards surrendered	185		(1,708)			1,893		185
Treasury stock, repurchase shares	(1,870)					(1,870)		(1,870)
Common stock held by ESOP committed to be released	85		53				32	85
Balance at Sep. 30, 2019	$ 932,311	$ 852	$ 735,928	$ 252,435	$ 2,775	$ (59,176)	$ (503)	$ 932,311	$ 0

Unaudited Consolidated Statem_4

Unaudited Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Common stock dividends, per share (in dollars per share)	$ 0.11	$ 0.100	$ 0.325	$ 0.290
Common stock held by ESOP committed to be released, shares	5,871	8,094	17,613	24,282

Unaudited Consolidated Statem_5

Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income attributable to Brookline Bancorp, Inc.	$ 65,534	$ 61,924
Adjustments to reconcile net income to net cash provided from operating activities:
Net income attributable to noncontrolling interest in subsidiary	43	2,467
Provision for credit losses	5,981	4,828
Origination of loans and leases held-for-sale	(15,352)	(19,286)
Proceeds from sales of loans and leases held-for-sale, net	19,741	22,418
Deferred income tax benefit	(538)	(4,456)
Depreciation of premises and equipment	5,252	5,594
Amortization of investment securities premiums and discounts, net	1,406	1,546
Amortization of deferred loan and lease origination costs, net	5,227	5,187
Amortization of identified intangible assets	1,243	1,543
Amortization of debt issuance costs	75	75
(Accretion) amortization of acquisition fair value adjustments, net	(682)	191
Gain on investment securities, net	(375)	(1,162)
Gain on sales of loans and leases held-for-sale	(1,400)	(1,556)
Loss on sales of OREO and other repossessed assets, net	99	0
Write-down of OREO and other repossessed assets	466	375
Compensation under recognition and retention plans	2,182	1,632
ESOP shares committed to be released	261	422
Net change in:
Cash surrender value of bank-owned life insurance	(772)	(775)
Equity securities held-for-trading	0	(4,169)
Other assets	(89,204)	(15,966)
Accrued expenses and other liabilities	96,368	28,223
Net cash provided from operating activities	95,555	89,055
Cash flows from investing activities:
Proceeds from sales of investment securities available-for-sale	0	1,470
Proceeds from maturities, calls, and principal repayments of investment securities available-for-sale	50,147	64,161
Purchases of investment securities available-for-sale	0	(73,852)
Proceeds from maturities, calls, and principal repayments of investment securities held to maturity	19,711	2,523
Purchases of investment securities held-to-maturity	(500)	(8,915)
Proceeds from redemption/sales of restricted equity securities	15,469	9,128
Purchase of restricted equity securities	(11,614)	(12,492)
Proceeds from sales of loans and leases held-for-investment, net	8,679	4,372
Net increase in loans and leases	(364,936)	(511,212)
Acquisitions, net of cash and cash equivalents acquired	0	(24,659)
Purchase of premises and equipment, net	(4,222)	(3,320)
Proceeds from sales of OREO and other repossessed assets	4,105	2,001
Net cash used for investing activities	(283,161)	(550,795)
Cash flows from financing activities:
Decrease in demand checking, NOW, savings and money market accounts	52,838	(88,622)
Increase in certificates of deposit	222,957	450,318
Proceeds from FHLBB advances	3,647,800	5,929,608
Repayment of FHLBB advances	(3,577,694)	(5,860,071)
Increase (decrease) in other borrowed funds, net	(4,361)	(7,591)
(Decrease) increase in mortgagors' escrow accounts, net	(354)	541
Repurchases of common stock	(1,870)	0
Common stock issued for acquisition	0	55,181
Payment of dividends on common stock	(25,937)	(22,990)
Payment of income taxes for shares withheld in share based activity	(46)	0
Redemption of noncontrolling interest in subsidiary	(35,851)	0
Proceeds from issuance of noncontrolling units	0	130
Payment of dividends to owners of noncontrolling interest in subsidiary	(930)	(1,893)
Net cash provided from financing activities	276,552	454,611
Net increase (decrease) in cash and cash equivalents	88,946	(7,129)
Cash and cash equivalents at beginning of period	89,584	61,005
Cash and cash equivalents at end of period	178,530	53,876
Cash paid during the period for:
Interest on deposits, borrowed funds and subordinated debt	72,047	46,133
Income taxes	21,270	15,098
Non-cash investing activities:
Transfer from loans to other real estate owned	2,783	1,891
First Commons Bank
Acquisition of First Commons Bank, N.A.:
Fair value of assets acquired, net of cash and cash equivalents acquired	0	292,025
Fair value of liabilities assumed	$ 0	$ 278,988

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Overview Brookline Bancorp, Inc. (the "Company") is a bank holding company (within the meaning of the Bank Holding Company Act of 1956, as amended) and the parent of Brookline Bank, a Massachusetts-chartered trust company; Bank Rhode Island ("BankRI"), a Rhode Island-chartered financial institution; and First Ipswich Bank ("First Ipswich"), a Massachusetts-chartered trust company (collectively referred to as the "Banks"). The Banks are all members of the Federal Reserve System. The Company is also the parent of Brookline Securities Corp. ("BSC"). The Company's primary business is to provide commercial, business and retail banking services to its corporate, municipal and retail customers through the Banks and its non-bank subsidiaries. Brookline Bank, which includes its wholly-owned subsidiaries BBS Investment Corp., Longwood Securities Corp. ("LSC") and Eastern Funding LLC ("Eastern Funding"), operates 25 full-service banking offices in the greater Boston metropolitan area with 2 additional lending offices. As of December 31, 2018 , Brookline Bank, a wholly-owned subsidiary of the Company, held an 84.07 percent ownership interest its subsidiary, Eastern Funding. As previously announced, on January 4, 2019, Brookline Bank completed the purchase of the remaining 15.93 percent interest in Eastern Funding for a total cash consideration of $35.9 million . BankRI, which includes its wholly-owned subsidiaries, Acorn Insurance Agency, BRI Realty Corp., Macrolease Corporation ("Macrolease"), BRI Investment Corp. and its wholly-owned subsidiary, BRI MSC Corp., operates 20 full-service banking offices in the greater Providence, Rhode Island area. First Ipswich, which includes its wholly-owned subsidiaries First Ipswich Insurance Agency and First Ipswich Securities II Corp., operates 6 full-service banking offices on the north shore of eastern Massachusetts. The Company's activities include acceptance of commercial, municipal and retail deposits, origination of mortgage loans on commercial and residential real estate located principally in all New England states, origination of commercial loans and leases to small- and mid-sized businesses, investment in debt and equity securities, and the offering of cash management and investment advisory services. The Company also provides specialty equipment financing through its subsidiaries Eastern Funding, which is based in New York City, New York, and Macrolease, which is based in Plainview, New York. The Company and the Banks are supervised, examined and regulated by the Board of Governors of the Federal Reserve System ("FRB"). As Massachusetts-chartered trust companies, Brookline Bank and First Ipswich are also subject to regulation under the laws of the Commonwealth of Massachusetts and the jurisdiction of the Massachusetts Division of Banks (the "DOB"). As a Rhode Island-chartered financial institution, BankRI is subject to regulation under the laws of the State of Rhode Island and the jurisdiction of the Banking Division of the Rhode Island Department of Business Regulation. The Federal Deposit Insurance Corporation ("FDIC") offers insurance coverage on all deposits up to $250,000 per depositor at each of the Banks. As FDIC-insured depository institutions, the Banks are also secondarily subject to supervision, examination and regulation by the FDIC. As previously disclosed on a Form 8-K filed with the SEC, on July 31, 2019, Brookline Bank ended its membership in the Depositors Insurance Fund (“DIF”), a private industry-sponsored fund which insures Massachusetts-chartered savings bank deposit balances in excess of federal deposit insurance coverage. Brookline Bank’s growth in deposit size necessitated Brookline Bank’s withdrawal from the DIF and the concurrent charter conversion of Brookline Bank from a Massachusetts-chartered savings bank to a Massachusetts-chartered trust company. Basis of Financial Statement Presentation The unaudited consolidated financial statements of the Company presented herein have been prepared pursuant to the rules of the Securities and Exchange Commission (“SEC”) for quarterly reports on Form 10-Q and do not include all of the information and note disclosures required by U.S. generally accepted accounting principles (“GAAP”). In the opinion of management, all adjustments (consisting of normal recurring adjustments) and disclosures considered necessary for the fair presentation of the accompanying consolidated financial statements have been included. Interim results are not necessarily reflective of the results of the entire year. The accompanying unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Annual Report on Form 10-K for the fiscal year ended December 31, 2018 . The unaudited consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany transactions and balances are eliminated in consolidation. In preparing these consolidated financial statements, Management is required to make significant estimates and assumptions that affect the reported amounts of assets, liabilities, income, expenses and disclosure of contingent assets and liabilities. Actual results could differ from those estimates based upon changing conditions, including economic conditions and future events. Material estimates that are particularly susceptible to significant changes in the near-term include the determination of the allowance for loan and lease losses, the determination of fair market values of assets and liabilities, including acquired loans and leases, the review of goodwill and intangible assets for impairment and the review of deferred tax assets for valuation allowances. The judgments used by Management in applying these critical accounting policies may be affected by a further and prolonged deterioration in the economic environment, which may result in changes to future financial results. For example, subsequent evaluations of the loan and lease portfolio, in light of the factors then prevailing, may result in significant changes in the allowance for loan and lease losses in future periods, and the inability to collect outstanding principal may result in increased loan and lease losses. Reclassification Certain previously reported amounts have been reclassified to conform to the current year's presentation.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In April 2019, FASB issued ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments to improve the Codifications or correct any unintended application. Codification improvements to Update 2016-13 (Topic 326) will be effective on the same date as requirements in 2016-13. Codification improvements to Update 2017-12 (Topic 815) will be effective as of the beginning of the first annual period beginning after the issuance date and Update 2016-01 (Topic 825) will be effective for fiscal years beginning after December 15, 2019. Management believes that this ASU does apply and has not determined the impact, if any, as of September 30, 2019 . In August 2018, FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40), to add additional guidance to help entities evaluate the accounting for fees paid by a customer in a cloud computing arrangement by providing guidance for determining when the arrangement includes a software license. The amendments in this update are effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption of the amendments in this update is permitted, including adoption in any interim period. Management is still determining the impact of this ASU, as of September 30, 2019 . In August 2018, FASB issued ASU 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20), to modify the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. This ASU is effective for fiscal years ending after December 15, 2020, for public business entities and for fiscal years ending after December 15, 2021, for all other entities. Early adoption is permitted. Management believes that this ASU does apply and has not determined the impact, if any, as of September 30, 2019 . In August 2018, FASB issued ASU 2018-13, Fair Value Measurement (Topic 820), to modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, based on the concepts in the Concepts Statement, including the consideration of costs and benefits. This ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. Management believes that this ASU does apply and has not determined the impact, if any, as of September 30, 2019 . In June 2016, the FASB issued ASU 2016-13, Financial instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The intent of this ASU is to replace the current GAAP method of calculating credit losses. Current GAAP uses a higher threshold at which probable losses can be calculated and recorded. The new process will require institutions to account for probable losses that originally would not have been part of the calculation. The calculation will incorporate future forecasting in addition to historical and current measures. For public entities that file with the SEC, this ASU is effective for the fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. This ASU must be applied to AFS Debt Securities, HTM Debt Securities, and HTM Loans . A retrospective approach will be applied cumulatively to retained earnings. Early adoption is permitted as of the fiscal years beginning after December 15, 2018. In November 2018, FASB issued ASU 2018-19 to clarify that operating lease receivables are not in scope of the credit losses standard. Management has determined that ASU 2016-13 does apply, but has not determined the impact, as of September 30, 2019 . In preparation for the adoption in 2020 of this ASU, Management formed a steering committee to oversee the adoption of ASU 2016-13. The steering committee, along with a project team, has developed an approach for implementation and has selected a third party software service provider. The new software model will include additional assumptions used to calculate credit losses over the estimated life of the financial assets and will include the impact of forecasted economic conditions. The project team is in the testing phase of the third party software by validating model results and assessing data inputs and potential model assumptions. The third party software is being used for both the loan and securities portfolios. Loan portfolios are to be modeled using a lifetime loss rate approach. Securities portfolios are to be modeled using a discounted cash flow approach. Management expects to have completed the testing phase during 4Q 2019. AFS Corporate Securities and HTM Municipal security segments necessitate a CECL allowance. As mentioned, the Company will utilize a DCF-based credit loss model. This model generates Expected Cash Flows on a security level and applies a Probability of Default in conjunction with a Loss Given Default to each instance of cash flow. The Company sources PD and LGD assumptions from white paper studies. The Company will employ a zero-loss expectation for securities issued by either the federal government or government-sponsored entities. The faith and credit of the United States government either implicitly or explicitly backs these securities and, thus, they have no associated credit risk. These zero-loss securities represent 85% of the Company’s investment portfolio. The Company is progressing with development of accounting policies and establishment of internal controls relevant to the updated methodologies and models. These aspects of the new methodologies are also expected to be completed during 4Q 2019. In February 2016, FASB issued ASU 2016-02, Leases (“ASU 2016-02”). This ASU requires lessees to record most leases on their balance sheet but recognize expenses on their income statements in a manner similar to current accounting. Subsequently, the FASB issued ASU 2018-10, ASU 2018-11, ASU 2018-20 and ASU 2019-01 to update provisions to ASU 2016-02. The Company has adopted all of the above mentioned ASU's regarding leases as of January 1, 2019. The standard had a material impact on our consolidated balance sheet by recognizing right-of-use asset operating leases and operating lease liabilities on the balance sheet. However, there was no impact on our consolidated income statement as the timing of the expense recognition has not changed. Additional details can be found in Note 12.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The following tables set forth investment securities available-for-sale, held-to-maturity and equity securities held-for-trading at the dates indicated: At September 30, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (In Thousands) Investment securities available-for-sale: GSE debentures $ 182,966 $ 3,240 $ 36 $ 186,170 GSE CMOs 92,883 47 1,079 91,851 GSE MBSs 141,853 739 513 142,079 SBA commercial loan asset-backed securities 37 — — 37 Corporate debt obligations 32,519 462 — 32,981 U.S. Treasury bonds 13,842 379 — 14,221 Total investment securities available-for-sale $ 464,100 $ 4,867 $ 1,628 $ 467,339 Investment securities held-to-maturity: GSE debentures $ 38,624 $ 129 $ 19 $ 38,734 GSEs MBSs 9,937 — 102 9,835 Municipal obligations 46,102 663 2 46,763 Foreign government obligations 500 — 30 470 Total investment securities held-to-maturity $ 95,163 $ 792 $ 153 $ 95,802 Equity securities held-for-trading $ 4,581 December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (In Thousands) Investment securities available-for-sale: GSE debentures $ 184,072 $ 99 $ 3,092 $ 181,079 GSE CMOs 107,363 17 4,250 103,130 GSE MBSs 169,334 124 4,369 165,089 SBA commercial loan asset-backed securities 51 — — 51 Corporate debt obligations 40,618 — 910 39,708 U.S. Treasury bonds 13,812 65 141 13,736 Total investment securities available-for-sale $ 515,250 $ 305 $ 12,762 $ 502,793 Investment securities held-to-maturity: GSE debentures $ 50,546 $ 22 $ 967 $ 49,601 GSEs MBSs 11,426 — 295 11,131 Municipal obligations 52,304 10 716 51,598 Foreign government obligations 500 — — 500 Total investment securities held-to-maturity $ 114,776 $ 32 $ 1,978 $ 112,830 Equity securities held-for-trading $ 4,207 As of September 30, 2019 , the fair value of all investment securities available-for-sale was $467.3 million , with net unrealized gains of $3.2 million , compared to a fair value of $502.8 million and net unrealized losses of $12.5 million as of December 31, 2018 . As of September 30, 2019 , $169.7 million , or 36.3% of the portfolio, had gross unrealized losses of $1.6 million , compared to $466.7 million , or 92.8% of the portfolio, with gross unrealized losses of $12.8 million as of December 31, 2018 . As of September 30, 2019 , the fair value of all investment securities held-to-maturity was $95.8 million , with net unrealized gains of $0.6 million , compared to a fair value of $112.8 million with net unrealized losses of $1.9 million as of December 31, 2018 . As of September 30, 2019 , $19.9 million , or 20.8% of the portfolio, had gross unrealized losses of $0.2 million . As of December 31, 2018 , $102.1 million , or 90.5% of the portfolio had gross unrealized losses of $2.0 million . As of September 30, 2019 , the Company recorded a fair value of $4.6 million of equity securities held-for-trading. As of December 31, 2018 , the Company recorded a fair value of $4.2 million of equity securities held-for-trading. Investment Securities as Collateral As of September 30, 2019 and December 31, 2018 , respectively, $437.8 million and $442.5 million of investment securities were pledged as collateral for repurchase agreements; municipal deposits; treasury, tax and loan deposits; swap agreements; FRB borrowings; and FHLBB borrowings. The Banks did not have any outstanding FRB borrowings as of September 30, 2019 and December 31, 2018 . Other-Than-Temporary Impairment ("OTTI") Investment securities as of September 30, 2019 and December 31, 2018 that have been in a continuous unrealized loss position for less than twelve months or twelve months or longer are as follows: At September 30, 2019 Less than Twelve Months Twelve Months or Longer Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses (In Thousands) Investment securities available-for-sale: GSE debentures $ 5,564 $ 22 $ 9,777 $ 14 $ 15,341 $ 36 GSE CMOs 23,489 176 61,385 903 84,874 1,079 GSE MBSs 24,787 84 44,672 429 69,459 513 SBA commercial loan asset-backed securities — — 36 — 36 — Temporarily impaired investment securities available-for-sale 53,840 282 115,870 1,346 169,710 1,628 Investment securities held-to-maturity: GSE debentures 2,986 12 2,991 7 5,977 19 GSEs MBSs — — 9,772 102 9,772 102 Municipal obligations 3,508 2 206 — 3,714 2 Foreign government obligations 470 30 — — 470 30 Temporarily impaired investment securities held-to-maturity 6,964 44 12,969 109 19,933 153 Total temporarily impaired investment securities $ 60,804 $ 326 $ 128,839 $ 1,455 $ 189,643 $ 1,781 December 31, 2018 Less than Twelve Months Twelve Months or Longer Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses (In Thousands) Investment securities available-for-sale: GSE debentures $ 25,780 $ 191 $ 130,284 $ 2,901 $ 156,064 $ 3,092 GSE CMOs — — 102,630 4,250 102,630 4,250 GSE MBSs 21,487 113 138,051 4,256 159,538 4,369 SBA commercial loan asset-backed securities — — 51 — 51 — Corporate debt obligations 10,019 93 29,689 817 39,708 910 U.S. Treasury bonds 3,927 37 4,753 104 8,680 141 Temporarily impaired investment securities available-for-sale 61,213 434 405,458 12,328 466,671 12,762 Investment securities held-to-maturity: GSE debentures — — 40,653 967 40,653 967 GSEs MBSs — — 11,080 295 11,080 295 Municipal obligations 14,813 107 35,058 609 49,871 716 Foreign government obligations — — 500 — 500 — Temporarily impaired investment securities held-to-maturity 14,813 107 87,291 1,871 102,104 1,978 Total temporarily impaired investment securities $ 76,026 $ 541 $ 492,749 $ 14,199 $ 568,775 $ 14,740 The Company performs regular analysis of the investment securities available-for-sale portfolio to determine whether a decline in fair value indicates that an investment security is OTTI. In making these OTTI determinations, management considers, among other factors, the length of time and extent to which the fair value has been less than amortized cost; projected future cash flows; credit subordination and the creditworthiness; capital adequacy and near-term prospects of the issuers. Management also considers the Company's capital adequacy, interest-rate risk, liquidity and business plans in assessing whether it is more likely than not that the Company will sell or be required to sell the investment securities before recovery. If the Company determines that a decline in fair value is OTTI and that it is more likely than not that the Company will not sell or be required to sell the investment security before recovery of its amortized cost, the credit portion of the impairment loss is recognized in the Company's unaudited consolidated statement of income and the noncredit portion is recognized in accumulated other comprehensive income. The credit portion of the OTTI impairment represents the difference between the amortized cost and the present value of the expected future cash flows of the investment security. If the Company determines that a decline in fair value is OTTI and it is more likely than not that it will sell or be required to sell the investment security before recovery of its amortized cost, the entire difference between the amortized cost and the fair value of the security will be recognized in the Company's unaudited consolidated statement of income. Investment Securities Available-For-Sale Impairment Analysis The following discussion summarizes, by investment security type, the basis for evaluating if the applicable investment securities within the Company’s available-for-sale portfolio were OTTI as of September 30, 2019 . Based on the analysis below, it was determined that is it more likely than not that the Company will not sell or be required to sell the investment securities before recovery of its amortized cost. The Company's ability and intent to hold these investment securities until recovery is supported by the Company's strong capital and liquidity positions as well as its historically low portfolio turnover. As such, management has determined that the investment securities are not OTTI as of September 30, 2019 . If market conditions for investment securities worsen or the creditworthiness of the underlying issuers deteriorates, it is possible that the Company may recognize additional OTTI in future periods. U.S. Government-Sponsored Enterprises The Company invests in securities issued by U.S. Government-sponsored enterprises ("GSEs"), including GSE debentures, mortgage-backed securities ("MBSs"), and collateralized mortgage obligations ("CMOs"). GSE securities include obligations issued by the Federal National Mortgage Association ("FNMA"), the Federal Home Loan Mortgage Corporation ("FHLMC"), the Government National Mortgage Association ("GNMA"), the FHLBB and the Federal Farm Credit Bank. As of September 30, 2019 , only GNMA MBSs and CMOs, and Small Business Administration ("SBA") commercial loan asset-backed securities in our available-for-sale portfolio with an estimated fair value of $18.3 million were backed explicitly by the full faith and credit of the U.S. Government, compared to $20.6 million as of December 31, 2018 . As of September 30, 2019 , the Company owned 60 GSE debentures with a total fair value of $186.2 million , and a net unrealized gain of $3.2 million . As of December 31, 2018 , the Company held 60 GSE debentures with a total fair value of $181.1 million , with a net unrealized loss of $3.0 million . As of September 30, 2019 , 6 of the 60 securities in this portfolio were in an unrealized loss position. As of December 31, 2018 , 51 of the 60 securities in this portfolio were in an unrealized loss position. All securities are performing and backed by the implicit (FHLB/FNMA/FHLMC) or explicit (GNMA/SBA) guarantee of the U.S Government. During the nine months ended September 30, 2019 , the Company did no t purchase any GSE debentures. This compares to $33.9 million purchased during the same period in 2018 . As of September 30, 2019 , the Company owned 61 GSE CMOs with a total fair value of $91.9 million and a net unrealized loss of $1.0 million . As of December 31, 2018 , the Company held 61 GSE CMOs with a total fair value of $103.1 million with a net unrealized loss of $4.2 million . As of September 30, 2019 , 41 of the 61 securities in this portfolio were in an unrealized loss position. As of December 31, 2018 , 46 of the 61 securities in this portfolio were in an unrealized loss position. All securities are performing and backed by the implicit (FHLB/FNMA/FHLMC) or explicit (GNMA) guarantee of the U.S Government. During the nine months ended September 30, 2019 and 2018 , the Company did no t purchase any GSE CMOs. As of September 30, 2019 , the Company owned 151 GSE MBSs with a total fair value of $142.1 million and a net unrealized gain of $0.2 million . As of December 31, 2018 , the Company held 165 GSE MBSs with a total fair value of $165.1 million with a net unrealized loss of $4.2 million . As of September 30, 2019 , 49 of the 151 securities in this portfolio were in an unrealized loss position. As of December 31, 2018 , 93 of the 165 securities in this portfolio were in an unrealized loss position. All securities are performing and backed by the implicit (FHLB/FNMA/FHLMC) or explicit (GNMA) guarantee of the U.S Government. During the nine months ended September 30, 2019 , the Company did no t purchase any GSE MBSs. This compares to $15.2 million purchased during the same period in 2018 . SBA Commercial Loan Asset-Backed As of September 30, 2019 , the Company owned 4 SBA securities with a total fair value of $37.0 thousand , which approximated amortized cost. As of December 31, 2018 , the Company owned 4 SBA securities with a total fair value of $51.0 thousand , which approximated amortized cost. As of September 30, 2019 , 3 of the 4 securities in this portfolio were in an unrealized loss position. As of December 31, 2018 , all 4 of the securities in this portfolio were in an unrealized loss position. All securities are performing and backed by the explicit guarantee of the U.S Government. During the nine months ended September 30, 2019 and 2018 , the Company did no t purchase any SBA securities. Corporate Obligations The Company may invest in high-quality corporate obligations to provide portfolio diversification and improve the overall yield on the portfolio. As of September 30, 2019 , the Company held 9 corporate obligation securities with a total fair value of $33.0 million and a net unrealized gain of $0.5 million . As of December 31, 2018 , the Company held 11 corporate obligation securities with a total fair value of $39.7 million and a net unrealized loss of $0.9 million . As of September 30, 2019 , none of the securities in this portfolio were in an unrealized loss position. As of December 31, 2018 , all 11 of the securities in this portfolio were in an unrealized loss position. Full collection of the obligations is expected because the financial condition of the issuers is sound, they have not defaulted on scheduled payments, the obligations are rated investment grade, and the Company has the ability and intent to hold the obligations for a period of time to recover the amortized cost. During the nine months ended September 30, 2019 and 2018 , the Company did no t purchase any corporate obligations. U.S. Treasury Bonds The Company invests in securities issued by the U.S. government. As of September 30, 2019 , the Company owned 3 U.S. Treasury bonds with a total fair value of $14.2 million and an unrealized gain of $0.4 million . This compares to 7 U.S. Treasury bonds with a total fair value of $13.7 million and an unrealized loss of $0.1 million as of December 31, 2018 . During the nine months ended September 30, 2019 the Company did no t purchase any U.S. Treasury bonds. This compares to $24.7 million purchased during the same period in 2018 . Equity Securities Held-for-Trading From time to time, the Company will invest in equity securities held-for-trading. As of September 30, 2019 and December 31, 2018 , the Company owned 3 equity securities held-for-trading with a fair value of $4.6 million and $4.2 million , respectively. Investment Securities Held-to-Maturity Impairment Analysis The following discussion summarizes by investment security type, the basis for evaluating if the applicable investment securities within the Company's held-to-maturity portfolio were OTTI at September 30, 2019 . Management has the ability and the intent to hold the securities until maturity. U.S. Government-Sponsored Enterprises As of September 30, 2019 , the Company owned 13 GSE debentures with a total fair value of $38.7 million , and an unrealized gain of $0.1 million . As of December 31, 2018 , the Company owned 17 GSE debentures with a total fair value of $49.6 million and an unrealized loss of $0.9 million . As of September 30, 2019 , 2 of the 13 securities in this portfolio were in an unrealized loss position. As of December 31, 2018 , 14 of the 17 securities in this portfolio were in an unrealized loss position. All securities are performing and backed by the implicit (FHLB/FNMA/FHLMC) or explicit (GNMA) guarantee of the U.S Government. During the nine months ended September 30, 2019 , the Company did no t purchase any GSE debentures as compared to the same period in 2018 , when the Company purchased a total of $8.9 million in GSE debentures. As of September 30, 2019 , the Company owned 11 GSE MBSs with a total fair value of $9.8 million and an unrealized loss of $0.1 million . As of December 31, 2018 , the Company owned 11 GSE MBSs with a total fair value of $11.1 million and an unrealized loss of $0.3 million . As of September 30, 2019 and December 31, 2018 , 8 of the 11 securities in this portfolio were in an unrealized loss position. All securities are performing and backed by the implicit (FHLB/FNMA/FHLMC) or explicit (GNMA) guarantee of the U.S Government. During the nine months ended September 30, 2019 and 2018 , the Company did no t purchase any GSE MBSs. Municipal Obligations The Company invests in certain state and municipal securities with high credit ratings for portfolio diversification and tax planning purposes. As of September 30, 2019 , the Company owned 88 municipal obligation securities with a total fair value of $46.8 million and a net unrealized gain of $0.7 million . As of December 31, 2018 , the Company owned 98 municipal obligation securities with a total fair value of $51.6 million and an unrealized loss of $0.7 million . As of September 30, 2019 , 9 of the 88 securities in this portfolio were in an unrealized loss position as compared to December 31, 2018 , when 94 of the 98 securities were in an unrealized loss position. During the nine months ended September 30, 2019 and 2018 , the Company did no t purchase any municipal obligations. Foreign Government Obligations As of September 30, 2019 and December 31, 2018 , the Company owned 1 foreign government obligation security with a fair value of $0.5 million , which approximated cost. As of September 30, 2019 and December 31, 2018 , the security was in an unrealized loss position. During the nine months ended September 30, 2019 the Company repurchased the foreign government obligation that had matured. During the same period in 2018 , the Company did no t purchase any new foreign government obligations during this period. Portfolio Maturities The final stated maturities of the debt securities are as follows for the periods indicated: At September 30, 2019 At December 31, 2018 Amortized Cost Estimated Fair Value Weighted Average Rate Amortized Cost Estimated Fair Value Weighted Average Rate (Dollars in Thousands) Investment securities available-for-sale: Within 1 year $ 16,804 $ 16,795 1.85 % $ 12,041 $ 12,007 2.03 % After 1 year through 5 years 211,446 214,683 2.19 % 195,701 192,692 2.14 % After 5 years through 10 years 70,538 71,239 2.16 % 115,665 112,819 2.18 % Over 10 years 165,312 164,622 2.12 % 191,843 185,275 2.17 % $ 464,100 $ 467,339 2.15 % $ 515,250 $ 502,793 2.16 % Investment securities held-to-maturity: Within 1 year $ 6,499 $ 6,504 1.85 % $ 7,640 $ 7,618 1.17 % After 1 year through 5 years 68,949 69,419 1.85 % 72,735 71,492 1.84 % After 5 years through 10 years 9,840 10,107 1.78 % 23,025 22,640 2.20 % Over 10 years 9,875 9,772 1.92 % 11,376 11,080 2.13 % $ 95,163 $ 95,802 1.85 % $ 114,776 $ 112,830 1.89 % Actual maturities of debt securities will differ from those presented above since certain obligations amortize and may also provide the issuer the right to call or prepay the obligation prior to scheduled maturity without penalty. MBSs and CMOs are included above based on their final stated maturities; the actual maturities, however, may occur earlier due to anticipated prepayments and stated amortization of cash flows. As of September 30, 2019 , issuers of debt securities with an estimated fair value of $45.0 million had the right to call or prepay the obligations. Of the $45.0 million , approximately $3.0 million matures within 1 year, $41.5 million matures in 1 - 5 years, $0.6 million matures in 6 - 10 years, and none mature after ten years. As of December 31, 2018 , issuers of debt securities with an estimated fair value of approximately $19.1 million had the right to call or prepay the obligations. Of the $19.1 million , approximately none mature within 1 year, $8.4 million matures in 1-5 years, $10.7 million matures in 6-10 years, and none mature after ten years. Security Sales On February 3, 2017, the Company, through BSC, received $319 in cash and 14.876 shares of Community Bank Systems, Inc. (“CBU”) common stock in exchange for each of the 9,721 shares of Northeast Retirement Services, Inc. (“NRS”) stock held by BSC. The exchange was completed in accordance with the merger agreement entered into between NRS and CBU. As part of the merger agreement, the Company was restricted to selling 5,071 shares of CBU per day in the open market. During the quarter ended March 31, 2017, the Company completed the sale of all the CBU shares acquired in the merger. When securities were sold, the adjusted cost of the specific security sold was used to compute the gain or loss on the sale. On March 6, 2018, the Company, through its wholly owned subsidiary, BSC, received $0.6 million in cash and 11,303 shares of CBU common stock as settlement for the indemnification escrow on the 12 month anniversary date of the merger between NRS and CBU. The Company subsequently sold all 11,303 shares of the CBU stock and recognized a gain on the sale of $0.6 million . During the month of March 2018, the Company, through Brookline Bank’s wholly owned subsidiary, LSC, sold 3 trust preferred securities with a book value of $1.5 million for a loss of $0.1 million . The table on the following page includes the activity with respect to the sale of the trust preferred securities and restricted equity securities. There were no securities sold during the nine months ended September 30, 2019 . Sales of investment and restricted equity securities are summarized as follows: Nine Months Ended September 30, 2019 Nine Months Ended September 30, 2018 (In Thousands) Proceeds from sale of trust preferred, marketable and restricted equity securities $ — $ 2,700 Sales of trading securities — — Gross gains from securities sales — 1,230 Gross losses from securities sales — (68 ) Gain on sales of securities, net $ — $ 1,162

Loans and Leases

Loans and Leases	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Loans and Leases	Loans and Leases The following tables present loan and lease balances and weighted average coupon rates for the originated and acquired loan and lease portfolios at the dates indicated: At September 30, 2019 Originated Acquired Total Balance Weighted Average Coupon Balance Weighted Average Coupon Balance Weighted Average Coupon (Dollars In Thousands) Commercial real estate loans: Commercial real estate $ 2,343,137 4.49 % $ 97,954 4.66 % $ 2,441,091 4.50 % Multi-family mortgage 882,665 4.37 % 36,569 4.60 % 919,234 4.38 % Construction 220,685 5.31 % 8,441 6.73 % 229,126 5.36 % Total commercial real estate loans 3,446,487 4.51 % 142,964 4.77 % 3,589,451 4.52 % Commercial loans and leases: Commercial 747,968 4.83 % 18,915 5.11 % 766,883 4.84 % Equipment financing 1,026,761 7.73 % 2,519 5.98 % 1,029,280 7.73 % Condominium association 54,225 4.87 % — — % 54,225 4.87 % Total commercial loans and leases 1,828,954 6.46 % 21,434 5.21 % 1,850,388 6.45 % Consumer loans: Residential mortgage 680,631 4.09 % 112,102 4.50 % 792,733 4.15 % Home equity 341,114 4.73 % 34,143 5.12 % 375,257 4.77 % Other consumer 38,890 4.79 % 102 17.88 % 38,992 4.83 % Total consumer loans 1,060,635 4.32 % 146,347 4.65 % 1,206,982 4.36 % Total loans and leases $ 6,336,076 5.04 % $ 310,745 4.74 % $ 6,646,821 5.03 % At December 31, 2018 Originated Acquired Total Balance Weighted Average Coupon Balance Weighted Average Coupon Balance Weighted Average Coupon (Dollars In Thousands) Commercial real estate loans: Commercial real estate $ 2,208,904 4.61 % $ 121,821 4.62 % $ 2,330,725 4.61 % Multi-family mortgage 799,813 4.51 % 47,898 4.58 % 847,711 4.51 % Construction 151,138 5.62 % 22,162 6.74 % 173,300 5.76 % Total commercial real estate loans 3,159,855 4.63 % 191,881 4.85 % 3,351,736 4.64 % Commercial loans and leases: Commercial 712,630 4.96 % 23,788 5.39 % 736,418 4.97 % Equipment financing 978,840 7.61 % 3,249 5.97 % 982,089 7.60 % Condominium association 50,451 4.70 % — — % 50,451 4.70 % Total commercial loans and leases 1,741,921 6.44 % 27,037 5.46 % 1,768,958 6.43 % Consumer loans: Residential mortgage 653,059 4.09 % 129,909 4.45 % 782,968 4.15 % Home equity 331,014 5.05 % 45,470 5.39 % 376,484 5.09 % Other consumer 23,260 5.55 % 110 17.81 % 23,370 5.61 % Total consumer loans 1,007,333 4.44 % 175,489 4.70 % 1,182,822 4.48 % Total loans and leases $ 5,909,109 5.13 % $ 394,407 4.83 % $ 6,303,516 5.11 % The net unamortized deferred loan origination fees and costs included in total loans and leases were $15.5 million and $15.6 million as of September 30, 2019 and December 31, 2018 , respectively. The Banks and subsidiaries lend primarily in all New England states, with the exception of equipment financing, 27.4% of which is in the greater New York and New Jersey metropolitan area and 72.6% of which is in other areas in the United States of America as of September 30, 2019 . Accretable Yield for the Acquired Loan Portfolio The following table summarizes activity in the accretable yield for the acquired loan portfolio for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (In Thousands) Balance at beginning of period $ 6,852 $ 8,813 $ 7,905 $ 10,522 Accretion (1,302 ) (890 ) (3,143 ) (3,223 ) Reclassification from nonaccretable difference as a result of changes in expected cash flows 806 224 1,594 848 Balance at end of period $ 6,356 $ 8,147 $ 6,356 $ 8,147 On a quarterly basis, subsequent to acquisition, management reforecasts the expected cash flows for acquired ASC 310-30 loans, taking into account prepayment speeds, probability of default and loss given defaults. Management compares cash flow projections per the reforecast to the original cash flow projections and determines whether any reduction in cash flow expectations are due to deterioration, or if the change in cash flow expectation is related to noncredit events. This cash flow analysis is used to evaluate the need for a provision for loan and lease losses and/or prospective yield adjustments. During the three months ended September 30, 2019 and 2018 , accretable yield adjustments totaling $806 thousand and $224 thousand , respectively, were made for certain loan pools. During the nine months ended September 30, 2019 and 2018 , accretable yield adjustments totaling $1.6 million and $0.8 million , respectively, were made for certain loan pools. These accretable yield adjustments, which are subject to continued re-assessment, will be recognized over the remaining lives of those pools. Loans and Leases Pledged as Collateral As of September 30, 2019 and December 31, 2018 , there were $3.0 billion and $3.0 billion , respectively, of loans and leases pledged as collateral for repurchase agreements; municipal deposits; treasury, tax and loan deposits; swap agreements; FRB borrowings; and FHLBB borrowings. The Banks did not have any outstanding FRB borrowings as of September 30, 2019 and December 31, 2018 .

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Allowance for Loan and Lease Losses	Allowance for Loan and Lease Losses The following tables present the changes in the allowance for loan and lease losses and the recorded investment in loans and leases by portfolio segment for the periods indicated: Three Months Ended September 30, 2019 Commercial Real Estate Commercial Consumer Total (In Thousands) Balance at June 30, 2019 $ 28,668 $ 24,333 $ 5,634 $ 58,635 Charge-offs — (1,175 ) (15 ) (1,190 ) Recoveries — 772 52 824 Provision for loan and lease losses 361 463 42 866 Balance at September 30, 2019 $ 29,029 $ 24,393 $ 5,713 $ 59,135 Three Months Ended September 30, 2018 Commercial Real Estate Commercial Consumer Total (In Thousands) Balance at June 30, 2018 $ 27,045 $ 26,120 $ 4,816 $ 57,981 Charge-offs — (1,198 ) (29 ) (1,227 ) Recoveries — 619 44 663 Provision for loan and lease losses 319 2,217 44 2,580 Balance at September 30, 2018 $ 27,364 $ 27,758 $ 4,875 $ 59,997 Nine Months Ended September 30, 2019 Commercial Real Estate Commercial Consumer Total (In Thousands) Balance at December 31, 2018 $ 28,187 $ 25,283 $ 5,222 $ 58,692 Charge-offs — (7,088 ) (56 ) (7,144 ) Recoveries — 1,454 141 1,595 Provision for loan and lease losses 842 4,744 406 5,992 Balance at September 30, 2019 $ 29,029 $ 24,393 $ 5,713 $ 59,135 Nine Months Ended September 30, 2018 Commercial Real Estate Commercial Consumer Total (In Thousands) Balance at December 31, 2017 $ 27,112 $ 26,333 $ 5,147 $ 58,592 Charge-offs (103 ) (5,387 ) (134 ) (5,624 ) Recoveries — 1,972 253 2,225 Provision (credit) for loan and lease losses 355 4,840 (391 ) 4,804 Balance at September 30, 2018 $ 27,364 $ 27,758 $ 4,875 $ 59,997 The liability for unfunded credit commitments, which is included in other liabilities, was $1.8 million and $1.9 million at September 30, 2019 and December 31, 2018 , respectively. No credit commitments were charged off against the liability account in the nine -month periods ended September 30, 2019 and 2018 . Provision for Credit Losses The provisions for credit losses are set forth below for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (In Thousands) Provision for loan and lease losses: Commercial real estate $ 361 $ 319 $ 842 $ 355 Commercial 463 2,217 4,744 4,840 Consumer 42 44 406 (391 ) Total provision for loan and lease losses 866 2,580 5,992 4,804 Unfunded credit commitments 5 137 (11 ) 24 Total provision for credit losses $ 871 $ 2,717 $ 5,981 $ 4,828 Allowance for Loan and Lease Losses Methodology Management has established a methodology to determine the adequacy of the allowance for loan and lease losses that assesses the risks and losses inherent in the loan and lease portfolio. Additions to the allowance for loan and lease losses are made by charges to the provision for credit losses. Losses on loans and leases are charged off against the allowance when all or a portion of a loan or lease is considered uncollectible. Subsequent recoveries on loans previously charged off, if any, are credited to the allowance when realized. Management uses a consistent and systematic process and methodology to evaluate the adequacy of the allowance for loan and lease losses on a quarterly basis. For purposes of determining the allowance for loan and lease losses, the Company has segmented certain loans and leases in the portfolio by product type into the following segments: (1) commercial real estate loans, (2) commercial loans and leases, and (3) consumer loans. Portfolio segments are further disaggregated into classes based on the associated risks within the segments. Commercial real estate loans are divided into three classes: commercial real estate loans, multi-family mortgage loans, and construction loans. Commercial loans and leases are divided into three classes: commercial loans which include taxi medallion loans, equipment financing, and loans to condominium associations. Consumer loans are divided into three classes: residential mortgage loans, home equity loans, and other consumer loans. A formula-based credit evaluation approach is applied to each group, coupled with an analysis of certain loans for impairment. For each class of loan, management makes significant judgments in selecting the estimation method that fits the credit characteristics of its class and portfolio segment as set forth below. The general allowance related to loans collectively evaluated for impairment is determined using a formula-based approach utilizing the risk ratings of individual credits and loss factors derived from historic portfolio loss rates, which include estimates of incurred losses over an estimated loss emergence period (“LEP”). The LEP was generated utilizing a charge-off look-back analysis which studied the time from the first indication of elevated risk of repayment (or other early event indicating a problem) to eventual charge-off to support the LEP considered in the allowance calculation. This reserving methodology established the approximate number of months of LEP that represents incurred losses for each portfolio. In addition to quantitative measures, relevant qualitative factors include, but are not limited to: (1) levels and trends in past due and impaired loans, (2) levels and trends in charge-offs, (3) changes in underwriting standards, policy exceptions, and credit policy, (4) experience of lending management and staff, (5) economic trends, (6) industry conditions, (7) effects of changes in credit concentrations, (8) interest rate environment, and (9) regulatory and other changes. The general allowance related to the acquired loans collectively evaluated for impairment is determined based upon the degree, if any, of deterioration in the pooled loans subsequent to acquisition. The qualitative factors used in the determination are the same as those used for originated loans. Specific valuation allowances are established for impaired originated loans with book values greater than the discounted present value of expected future cash flows or, in the case of collateral-dependent impaired loans, for any excess of a loan's book balance over the fair value of its underlying collateral. Specific valuation allowances are established for acquired loans with deterioration in the discounted present value of expected future cash flows since acquisitions or, in the case of collateral dependent impaired loans, for any increase in the excess of a loan's book balance greater than the fair value of its underlying collateral. A specific valuation allowance for losses on troubled debt restructured ("TDR") loans is determined by comparing the net carrying amount of the TDR loan with the restructured loan's cash flows discounted at the original effective rate. Impaired loans are reviewed quarterly with adjustments made to the calculated reserve as necessary. As of September 30, 2019 , management believes that the methodology for calculating the allowance is sound and that the allowance provides a reasonable basis for determining and reporting on probable losses incurred in the Company’s loan portfolios. As of September 30, 2019 , the Company had a portfolio of approximately $10.4 million in loans secured by taxi medallions issued by the cities of Boston and Cambridge, Massachusetts. As of December 31, 2018 , this portfolio was approximately $13.7 million . For collateral valuation purposes, taxi medallions are currently estimated at $35 thousand for Boston and $10 thousand for Cambridge. The Company has no taxi medallion exposure outside Massachusetts. As of September 30, 2019 , the Company had an allowance for loan and lease losses associated with taxi medallion loans of $1.1 million of which $0.6 million were specific reserves and $0.5 million was a general reserve. As of December 31, 2018 , the Company had an allowance for loan and lease losses associated with taxi medallion loans of $2.5 million of which $1.9 million were specific reserves and $0.6 million was a general reserve. The decrease in the allowance for loan and leases associated with taxi medallion loans was primarily driven by the decrease in specific reserves due to charge-offs in the taxi medallion portfolio. The total TDRs secured by taxi medallions decreased by $2.7 million from $3.7 million at December 31, 2018 to $1.0 million at September 30, 2019 . The total loans secured by taxi medallions that were placed on nonaccrual decreased by $2.5 million to $1.2 million at September 30, 2019 from $3.7 million at December 31, 2018 . The decreases in TDRs and non-accruing loans secured by taxi medallions were primarily due to the charge-offs in taxi medallion relationships during the first nine months of 2019 . Further declines in demand for taxi services or further deterioration in the value of taxi medallions may result in higher delinquencies and losses beyond that provided for in the allowance for loan and lease losses. The general allowance for loan and lease losses was $57.4 million as of September 30, 2019 , compared to $55.6 million as of December 31, 2018 . The specific allowance for loan and lease losses was $1.7 million as of September 30, 2019 , compared to $3.1 million as of December 31, 2018 . The specific allowance decreased by $1.4 million during the nine months ended September 30, 2019 primarily due to the charge-offs of $1.7 million on loans collateralized by taxi medallions. Credit Quality Assessment At the time of loan origination, a rating is assigned based on the capacity to pay and general financial strength of the borrower, the value of assets pledged as collateral, and the evaluation of third party support such as a guarantor. The Company continually monitors the credit quality of the loan portfolio using all available information. The officer responsible for handling each loan is required to initiate changes to risk ratings when changes in facts and circumstances occur that warrant an upgrade or downgrade in a loan rating. Based on this information, loans demonstrating certain payment issues or other weaknesses may be categorized as delinquent, impaired, nonperforming and/or put on nonaccrual status. Additionally, in the course of resolving such loans, the Company may choose to restructure the contractual terms of certain loans to match the borrower's ability to repay the loan based on their current financial condition. If a restructured loan meets certain criteria, it may be categorized as a TDR loan. The Company reviews numerous credit quality indicators when assessing the risk in its loan portfolio. For all loans, the Company utilizes an eight-grade loan rating system, which assigns a risk rating to each borrower based on a number of quantitative and qualitative factors associated with a loan transaction. Factors considered include industry and market conditions; position within the industry; earnings trends; operating cash flow; asset/liability values; debt capacity; guarantor strength; management and controls; financial reporting; collateral; and other considerations. In addition, the Company's independent loan review group evaluates the credit quality and related risk ratings in all loan portfolios. The results of these reviews are reported to the Risk Committee of the Board of Directors on a periodic basis and annually to the Board of Directors. For the consumer loans, the Company heavily relies on payment status for calibrating credit risk. The ratings categories used for assessing credit risk in the commercial real estate, multi-family mortgage, construction, commercial, equipment financing, condominium association and other consumer loan and lease classes are defined as follows: 1 -4 Rating—Pass Loan rating grades "1" through "4" are classified as "Pass," which indicates borrowers are performing in accordance with the terms of the loan and are less likely to result in loss due to the capacity of the borrower to pay and the adequacy of the value of assets pledged as collateral. 5 Rating—Other Assets Especially Mentioned ("OAEM") Borrowers exhibit potential credit weaknesses or downward trends deserving management's attention. If not checked or corrected, these trends will weaken the Company's asset and position. While potentially weak, currently these borrowers are marginally acceptable; no loss of principal or interest is envisioned. 6 Rating—Substandard Borrowers exhibit well defined weaknesses that jeopardize the orderly liquidation of debt. Substandard loans may be inadequately protected by the current net worth and paying capacity of the obligors or by the collateral pledged, if any. Normal repayment from the borrower is in jeopardy. Although no loss of principal is envisioned, there is a distinct possibility that a partial loss of interest and/or principal will occur if the deficiencies are not corrected. Collateral coverage may be inadequate to cover the principal obligation. 7 Rating—Doubtful Borrowers exhibit well-defined weaknesses that jeopardize the orderly liquidation of debt with the added provision that the weaknesses make collection of the debt in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Serious problems exist to the point where partial loss of principal is likely. 8 Rating—Definite Loss Borrowers deemed incapable of repayment. Loans to such borrowers are considered uncollectible and of such little value that continuation as active assets of the Company is not warranted. Assets rated as "OAEM," "substandard" or "doubtful" based on criteria established under banking regulations are collectively referred to as "criticized" assets. Credit Quality Information The following tables present the recorded investment in loans in each class as of September 30, 2019 , by credit quality indicator. At September 30, 2019 Commercial Real Estate Multi- Family Mortgage Construction Commercial Equipment Financing Condominium Association Other Consumer Total (In Thousands) Originated: Loan rating: Pass $ 2,336,984 $ 882,578 $ 220,685 $ 729,682 $ 1,012,405 $ 54,062 $ 38,889 $ 5,275,285 OAEM 2,982 — — 11,751 1,451 — — 16,184 Substandard 3,171 87 — 6,532 11,455 163 1 21,409 Doubtful — — — 3 1,450 — — 1,453 Total originated 2,343,137 882,665 220,685 747,968 1,026,761 54,225 38,890 5,314,331 Acquired: Loan rating: Pass 86,854 36,569 3,571 18,313 2,512 — 102 147,921 OAEM 2,076 — 4,870 370 — — — 7,316 Substandard 9,024 — — 232 7 — — 9,263 Total acquired 97,954 36,569 8,441 18,915 2,519 — 102 164,500 Total loans $ 2,441,091 $ 919,234 $ 229,126 $ 766,883 $ 1,029,280 $ 54,225 $ 38,992 $ 5,478,831 As of September 30, 2019 , there were no loans categorized as definite loss. At September 30, 2019 Residential Mortgage Home Equity (Dollars In Thousands) Originated: Loan-to-value ratio: Less than 50% $ 182,444 23.0 % $ 136,072 36.3 % 50% - 69% 285,430 36.0 % 90,917 24.2 % 70% - 79% 181,726 22.9 % 78,552 20.9 % 80% and over 19,922 2.5 % 35,573 9.5 % Data not available* 11,109 1.4 % — — % Total originated 680,631 85.8 % 341,114 90.9 % Acquired: Loan-to-value ratio: Less than 50% 34,453 4.3 % 18,148 4.8 % 50%—69% 48,522 6.3 % 8,727 2.3 % 70%—79% 17,551 2.2 % 712 0.2 % 80% and over 5,885 0.7 % 2,559 0.7 % Data not available 5,691 0.7 % 3,997 1.1 % Total acquired 112,102 14.2 % 34,143 9.1 % Total loans $ 792,733 100.0 % $ 375,257 100.0 % _______________________________________________________________________________ * Represents in process general ledger accounts for which data are not available. The following tables present the recorded investment in loans in each class as of December 31, 2018 , by credit quality indicator. At December 31, 2018 Commercial Real Estate Multi- Family Mortgage Construction Commercial Equipment Financing Condominium Association Other Consumer Total (In Thousands) Originated: Loan rating: Pass $ 2,198,377 $ 799,483 $ 150,742 $ 685,773 $ 969,275 $ 50,186 $ 23,249 $ 4,877,085 OAEM 6,096 — — 3,726 52 — — 9,874 Substandard 4,431 330 396 22,870 6,895 265 11 35,198 Doubtful — — — 261 2,618 — — 2,879 Total originated 2,208,904 799,813 151,138 712,630 978,840 50,451 23,260 4,925,036 Acquired: Loan rating: Pass 111,919 47,715 22,162 23,250 3,240 — 110 208,396 OAEM 626 — — 236 — — — 862 Substandard 9,276 183 — 302 9 — — 9,770 Total acquired 121,821 47,898 22,162 23,788 3,249 — 110 219,028 Total loans $ 2,330,725 $ 847,711 $ 173,300 $ 736,418 $ 982,089 $ 50,451 $ 23,370 $ 5,144,064 As of December 31, 2018 , there were no loans categorized as definite loss. At December 31, 2018 Residential Mortgage Home Equity (Dollars In Thousands) Originated: Loan-to-value ratio: Less than 50% $ 171,523 21.9 % $ 142,534 37.9 % 50%—69% 287,337 36.7 % 84,423 22.4 % 70%—79% 173,870 22.2 % 73,898 19.6 % 80% and over 19,030 2.4 % 30,129 8.0 % Data not available* 1,299 0.2 % 30 — % Total originated 653,059 83.4 % 331,014 87.9 % Acquired: Loan-to-value ratio: Less than 50% 36,752 4.6 % 24,705 6.6 % 50%—69% 53,788 6.9 % 10,353 2.7 % 70%—79% 26,510 3.4 % 1,000 0.3 % 80% and over 6,701 0.9 % 4,348 1.2 % Data not available 6,158 0.8 % 5,064 1.3 % Total acquired 129,909 16.6 % 45,470 12.1 % Total loans $ 782,968 100.0 % $ 376,484 100.0 % _______________________________________________________________________________ * Represents in process general ledger accounts for which data are not available. The following table presents information regarding foreclosed residential real estate property for the periods indicated: At September 30, 2019 At December 31, 2018 (In Thousands) Foreclosed residential real estate property held by the creditor $ — $ 629 Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure $ 701 $ 121 Age Analysis of Past Due Loans and Leases The following tables present an age analysis of the recorded investment in total loans and leases as of September 30, 2019 and December 31, 2018 . At September 30, 2019 Past Due Loans and Leases Past Due Greater Than 90 Days and Accruing 31-60 Days 61-90 Days Greater Than 90 Days Total Current Total Loans and Leases Nonaccrual Loans and Leases (In Thousands) Originated: Commercial real estate loans: Commercial real estate $ 2,157 $ — $ 2,540 $ 4,697 $ 2,338,440 $ 2,343,137 $ — $ 2,811 Multi-family mortgage 557 — — 557 882,108 882,665 — 87 Construction — 1,306 — 1,306 219,379 220,685 — — Total commercial real estate loans 2,714 1,306 2,540 6,560 3,439,927 3,446,487 — 2,898 Commercial loans and leases: Commercial 731 1,314 3,348 5,393 742,575 747,968 1,241 2,933 Equipment financing 3,108 1,683 7,741 12,532 1,014,229 1,026,761 — 12,817 Condominium association 451 — — 451 53,774 54,225 — 163 Total commercial loans and leases 4,290 2,997 11,089 18,376 1,810,578 1,828,954 1,241 15,913 Consumer loans: Residential mortgage 685 — 594 1,279 679,352 680,631 — 1,605 Home equity 504 201 113 818 340,296 341,114 1 254 Other consumer 22 5 2 29 38,861 38,890 — 3 Total consumer loans 1,211 206 709 2,126 1,058,509 1,060,635 1 1,862 Total originated loans and leases $ 8,215 $ 4,509 $ 14,338 $ 27,062 $ 6,309,014 $ 6,336,076 $ 1,242 $ 20,673 At September 30, 2019 Past Due Loans and Leases Past Due Greater Than 90 Days and Accruing 31-60 Days 61-90 Days Greater Than 90 Days Total Current Total Loans and Leases Nonaccrual Loans and Leases (1) (In Thousands) Acquired: Commercial real estate loans: Commercial real estate $ — $ 327 $ 8,864 $ 9,191 $ 88,763 $ 97,954 $ 8,794 $ 99 Multi-family mortgage 348 — — 348 36,221 36,569 — — Construction — — — — 8,441 8,441 — — Total commercial real estate loans 348 327 8,864 9,539 133,425 142,964 8,794 99 Commercial loans and leases: Commercial — — 232 232 18,683 18,915 26 206 Equipment financing — — 7 7 2,512 2,519 7 — Total commercial loans and leases — — 239 239 21,195 21,434 33 206 Consumer loans: Residential mortgage 1,892 — 1,776 3,668 108,434 112,102 1,776 — Home equity 548 6 42 596 33,547 34,143 40 650 Other consumer — — — — 102 102 — — Total consumer loans 2,440 6 1,818 4,264 142,083 146,347 1,816 650 Total acquired loans and leases $ 2,788 $ 333 $ 10,921 $ 14,042 $ 296,703 $ 310,745 $ 10,643 $ 955 Total loans and leases $ 11,003 $ 4,842 $ 25,259 $ 41,104 $ 6,605,717 $ 6,646,821 $ 11,885 $ 21,628 ___________________________________________________________ (1) Loans and leases acquired with deteriorated credit quality are always accruing. At December 31, 2018 Past Due Loans and Leases Past Due Greater Than 90 Days and Accruing 31-60 Days 61-90 Days Greater Than 90 Days Total Current Total Loans and Leases Nonaccrual Loans and Leases (In Thousands) Originated: Commercial real estate loans: Commercial real estate $ 5,139 $ 896 $ 2,962 $ 8,997 $ 2,199,907 $ 2,208,904 $ 277 $ 3,806 Multi-family mortgage 893 — 145 1,038 798,775 799,813 — 330 Construction 297 — 396 693 150,445 151,138 — 396 Total commercial real estate loans 6,329 896 3,503 10,728 3,149,127 3,159,855 277 4,532 Commercial loans and leases: Commercial 2,021 582 6,244 8,847 703,783 712,630 1,962 6,421 Equipment financing 2,509 650 5,685 8,844 969,996 978,840 12 9,500 Condominium association 320 — — 320 50,131 50,451 — 265 Total commercial loans and leases 4,850 1,232 11,929 18,011 1,723,910 1,741,921 1,974 16,186 Consumer loans: Residential mortgage 400 — 1,597 1,997 651,062 653,059 — 1,842 Home equity 761 25 183 969 330,045 331,014 1 191 Other consumer 51 18 15 84 23,176 23,260 — 17 Total consumer loans 1,212 43 1,795 3,050 1,004,283 1,007,333 1 2,050 Total originated loans and leases $ 12,391 $ 2,171 $ 17,227 $ 31,789 $ 5,877,320 $ 5,909,109 $ 2,252 $ 22,768 At December 31, 2018 Past Due Loans and Leases Past Due Greater Than 90 Days and Accruing 31-60 Days 61-90 Days Greater Than 90 Days Total Current Total Loans and Leases Nonaccrual Loans and Leases (1) (In Thousands) Acquired: Commercial real estate loans: Commercial real estate $ — $ 215 $ 9,087 $ 9,302 $ 112,519 $ 121,821 $ 9,018 $ 122 Multi-family mortgage 348 — — 348 47,550 47,898 — — Construction 360 242 — 602 21,560 22,162 — — Total commercial real estate loans 708 457 9,087 10,252 181,629 191,881 9,018 122 Commercial loans and leases: Commercial 124 44 290 458 23,330 23,788 90 200 Equipment financing — — 9 9 3,240 3,249 9 — Total commercial loans and leases 124 44 299 467 26,570 27,037 99 200 Consumer loans: Residential mortgage — 371 2,113 2,484 127,425 129,909 2,113 290 Home equity 191 265 2 458 45,012 45,470 — 717 Other consumer — — — — 110 110 — — Total consumer loans 191 636 2,115 2,942 172,547 175,489 2,113 1,007 Total acquired loans and leases $ 1,023 $ 1,137 $ 11,501 $ 13,661 $ 380,746 $ 394,407 $ 11,230 $ 1,329 Total loans and leases $ 13,414 $ 3,308 $ 28,728 $ 45,450 $ 6,258,066 $ 6,303,516 $ 13,482 $ 24,097 ___________________________________________________________ (1) Loans and leases acquired with deteriorated credit quality are always accruing. Commercial Real Estate Loans —As of September 30, 2019 , loans outstanding in the three classes within this segment expressed as a percentage of total loans and leases outstanding were as follows: commercial real estate loans -- 36.7% ; multi-family mortgage loans -- 13.9% ; and construction loans -- 3.5% . Loans in this portfolio that are on nonaccrual status and/or risk-rated "substandard" or worse are evaluated on an individual loan basis for impairment. For non-impaired commercial real estate loans, loss factors are applied to outstanding loans by risk rating for each of the three classes in the portfolio. The factors applied are based primarily on historic loan loss experience and an assessment of internal and external factors and other relevant information. Commercial Loans and Leases —As of September 30, 2019 , loans and leases outstanding in the three classes within this segment expressed as a percent of total loans and leases outstanding were as follows: commercial loans and leases -- 11.5% ; equipment financing loans -- 15.5% ; and loans to condominium associations -- 0.8% . Loans and leases in this portfolio that are on nonaccrual status and/or risk-rated "substandard" or worse are evaluated on an individual basis for impairment. For non-impaired commercial loans and leases, loss factors are applied to outstanding loans by risk rating for each of the three classes in the portfolio. Consumer Loans —As of September 30, 2019 , loans outstanding within the three classes within this segment expressed as a percent of total loans and leases outstanding were as follows: residential mortgage loans -- 11.9% , home equity loans -- 5.6% , and other consumer loans -- 0.6% . Significant risk characteristics related to the residential mortgage and home equity loan portfolios are the geographic concentration of the properties financed within selected communities in the greater Boston and Providence metropolitan areas. The payment status and loan-to-value ratio are the primary credit quality indicators used for residential mortgage loans and home equity loans. Generally, loans are not made when the loan-to-value ratio exceeds 80% unless private mortgage insurance is obtained and/or there is a financially strong guarantor. Consumer loans that become 90 or more days past due, or are placed on nonaccrual. Impaired Loans and Leases A loan is considered to be impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due (both interest and principal) according to the contractual terms of the loan agreement. The Company has defined the population of impaired loans to include nonaccrual loans and TDR loans. When the ultimate collectability of the total principal of an impaired loan or lease is in doubt and the loan is on nonaccrual status, all payments are applied to principal, under the cost recovery method. When the ultimate collectability of the total principal of an impaired loan or lease is not in doubt and the loan or lease is on nonaccrual status, contractual interest is credited to interest income when received, under the cash basis method. The following tables include the recorded investment and unpaid principal balances of impaired loans and leases with the related allowance amount, if applicable, for the originated and acquired loan and lease portfolios at the dates indicated. Also presented are the average recorded investments in the impaired loans and leases and the related amount of interest recognized during the period that the impaired loans were impaired. At September 30, 2019 At December 31, 2018 Recorded (1) Unpaid Related Recorded Investment (2) Unpaid Related (In Thousands) Originated: With no related allowance recorded: Commercial real estate $ 3,971 $ 3,962 $ — $ 5,569 $ 5,545 $ — Commercial 25,761 25,723 — 30,927 31,053 — Consumer 2,625 2,612 — 2,989 2,978 — Total originated with no related allowance recorded 32,357 32,297 — 39,485 39,576 — With an allowance recorded: Commercial real estate 70 70 8 396 396 5 Commercial 5,421 5,422 1,572 8,224 8,208 2,961 Consumer 1,229 1,226 72 665 664 89 Total originated with an allowance recorded 6,720 6,718 1,652 9,285 9,268 3,055 Total originated impaired loans and leases 39,077 39,015 1,652 48,770 48,844 3,055 Acquired: With no related allowance recorded: Commercial real estate 14,309 14,311 — 9,538 9,538 — Commercial 476 476 — 531 531 — Consumer 3,746 3,746 — 4,772 4,772 — Total acquired with no related allowance recorded 18,531 18,533 — 14,841 14,841 — With an allowance recorded: Consumer 451 451 40 154 154 26 Total acquired with an allowance recorded 451 451 40 154 154 26 Total acquired impaired loans and leases 18,982 18,984 40 14,995 14,995 26 Total impaired loans and leases $ 58,059 $ 57,999 $ 1,692 $ 63,765 $ 63,839 $ 3,081 ___________________________________________________________________________ (1) Includes originated and acquired nonaccrual loans of $20.7 million and $1.0 million , respectively as of September 30, 2019 . (2) Includes originated and acquired nonaccrual loans of $22.7 million and $1.3 million , respectively as of December 31, 2018 . Three Months Ended September 30, 2019 September 30, 2018 Average Interest Average Interest (In Thousands) Originated: With no related allowance recorded: Commercial real estate $ 3,964 $ 15 $ 5,717 $ 19 Commercial 26,826 206 22,938 195 Consumer 2,638 10 2,711 15 Total originated with no related allowance recorded 33,428 231 31,366 229 With an allowance recorded: Commercial real estate 70 1 — — Commercial 5,511 27 9,052 29 Consumer 1,231 13 1,375 3 Total originated with an allowance recorded 6,812 41 10,427 32 Total originated impaired loans and leases 40,240 272 41,793 261 Acquired: With no related allowance recorded: Commercial real estate 14,316 91 9,222 1 Commercial 486 4 1,118 4 Consumer 3,759 12 5,430 15 Total acquired with no related allowance recorded 18,561 107 15,770 20 With an allowance recorded: Consumer 452 5 158 1 Total acquired with an allowance recorded 452 5 158 1 Total acquired impaired loans and leases 19,013 112 15,928 21 Total impaired loans and leases $ 59,253 $ 384 $ 57,721 $ 282 Nine Months Ended September 30, 2019 September 30, 2018 Average Interest Average Interest (In Thousands) Originated: With no related allowance recorded: Commercial real estate $ 5,543 $ 95 $ 6,756 $ 68 Commercial 29,605 759 24,641 682 Consumer 2,669 28 2,692 42 Total originated with no related allowance recorded 37,817 882 34,089 792 With an allowance recorded: Commercial real estate 336 2 — — Commercial 7,482 55 9,261 73 Consumer 852 19 892 5 Total originated with an allowance recorded 8,670 76 10,153 78 Total originated impaired loans and leases 46,487 958 44,242 870 Acquired: With no related allowance recorded: Commercial real estate 10,874 94 9,975 3 Commercial 535 8 1,438 12 Consumer 4,548 27 5,133 45 Total acquired with no related allowance recorded 15,957 129 16,546 60 With an allowance recorded: Consumer 253 6 128 3 Total acquired with an allowance recorded 253 6 128 3 Total acquired impaired loans and leases 16,210 135 16,674 63 Total impaired loans and leases $ 62,697 $ 1,093 $ 60,916 $ 933 The following tables present information regarding impaired and non-impaired loans and leases at the dates indicated: At September 30, 2019 Commercial Real Estate Commercial Consumer Total (In Thousands) Allowance for Loan and Lease Losses: Originated: Individually evaluated for impairment $ 8 $ 1,572 $ 72 $ 1,652 Collectively evaluated for impairment 27,507 22,439 5,582 55,528 Total originated loans and leases 27,515 24,011 5,654 57,180 Acquired: Individually evaluated for impairment — — 40 40 Collectively evaluated for impairment 63 276 16 355 Acquired with deteriorated credit quality 1,451 106 3 1,560 Total acquired loans and leases 1,514 382 59 1,955 Total allowance for loan and lease losses $ 29,029 $ 24,393 $ 5,713 $ 59,135 Loans and Leases: Originated: Individually evaluated for impairment $ 3,811 $ 23,124 $ 3,743 $ 30,678 Collectively evaluated for impairment 3,442,676 1,805,830 1,056,892 6,305,398 Total originated loans and leases 3,446,487 1,828,954 1,060,635 6,336,076 Acquired: Individually evaluated for impairment 4,870 405 1,869 7,144 Collectively evaluated for impairment 80,889 19,035 118,143 218,067 Acquired with deteriorated credit quality 57,205 1,994 26,335 85,534 Total acquired loans and leases 142,964 21,434 146,347 310,745 Total loans and leases $ 3,589,451 $ 1,850,388 $ 1,206,982 $ 6,646,821 At December 31, 2018 Commercial Real Estate Commercial Consumer Total (In Thousands) Allowance for Loan and Lease Losses: Originated: Individually evaluated for impairment $ 5 $ 2,961 $ 89 $ 3,055 Collectively evaluated for impairment 26,617 22,131 5,075 53,823 Total originated loans and leases 26,622 25,092 5,164 56,878 Acquired: Individually evaluated for impairment — — 26 26 Collectively evaluated for impairment 32 83 20 135 Acquired with deteriorated credit quality 1,533 108 12 1,653 Total acquired loans and leases 1,565 191 58 1,814 Total allowance for loan and lease losses $ 28,187 $ 25,283 $ 5,222 $ 58,692 Loans and Leases: Originated: Individually evaluated for impairment $ 5,610 $ 32,127 $ 3,502 $ 41,239 Collectively evaluated for impairment 3,154,245 1,709,794 1,003,831 5,867,870 Total originated loans and leases 3,159,855 1,741,921 1,007,333 5,909,109 Acquired: Individually evaluated for impairment — 404 2,072 2,476 Collectively evaluated for impairment 121,119 24,094 142,194 287,407 Acquired with deteriorated credit quality 70,762 2,539 31,223 104,524 Total acquired loans and leases 191,881 27,037 175,489 394,407 Total loans and leases $ 3,351,736 $ 1,768,958 $ 1,182,822 $ 6,303,516 Troubled Debt Restructured Loans and Leases A specific valuation allowance for losses on TDR loans is determined by comparing the net carrying amount of the TDR loan with the restructur

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The following table sets forth the carrying value of goodwill and other intangible assets at the dates indicated: At September 30, 2019 At December 31, 2018 (In Thousands) Goodwill (beginning) $ 160,427 $ 137,890 Additions — 22,537 Balance at end of period 160,427 160,427 Other intangible assets: Core deposits 3,754 4,997 Trade name 1,089 1,089 Total other intangible assets 4,843 6,086 Total goodwill and other intangible assets $ 165,270 $ 166,513 At December 31, 2013, the Company concluded that the BankRI name would continue to be utilized in its marketing strategies; therefore, the trade name with carrying value of $1.1 million , has an indefinite life and ceased to amortize. The weighted-average amortization period for the core deposit intangible is 7.0 years . The estimated aggregate future amortization expense (in thousands) for other intangible assets for each of the next five years and thereafter is as follows: Remainder of 2019 $ 456 Year ending: 2020 1,261 2021 850 2022 494 2023 263 2024 153 Thereafter 277 Total $ 3,754

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) For the three and nine months ended September 30, 2019 and 2018 , the Company’s accumulated other comprehensive income (loss) includes the following two components: (i) unrealized holding gains (losses) on investment securities available-for-sale; and (ii) adjustment of accumulated obligation for postretirement benefits. Changes in accumulated other comprehensive income (loss) by component, net of tax, were as follows for the periods indicated: Three Months Ended September 30, 2019 Investment Securities Available-for-Sale Postretirement Benefits Accumulated Other Comprehensive Loss (In Thousands) Balance at June 30, 2019 $ 889 $ 252 $ 1,141 Other comprehensive income (loss) 1,634 — 1,634 Balance at September 30, 2019 $ 2,523 $ 252 $ 2,775 Three Months Ended September 30, 2018 Investment Securities Available-for-Sale Postretirement Benefits Accumulated Other Comprehensive Loss (In Thousands) Balance at June 30, 2018 $ (13,578 ) $ 163 $ (13,415 ) Other comprehensive income (loss) (2,184 ) — (2,184 ) Balance at September 30, 2018 $ (15,762 ) $ 163 $ (15,599 ) Nine Months Ended September 30, 2019 Investment Securities Available-for-Sale Postretirement Benefits Accumulated Other Comprehensive Loss (In Thousands) Balance at December 31, 2018 $ (9,712 ) $ 252 $ (9,460 ) Other comprehensive (loss) income 12,235 — 12,235 Balance at September 30, 2019 $ 2,523 $ 252 $ 2,775 Nine Months Ended September 30, 2018 Investment Securities Available-for-Sale Postretirement Benefits Accumulated Other Comprehensive Loss (In Thousands) Balance at December 31, 2017 $ (6,113 ) $ 163 $ (5,950 ) Other comprehensive loss before reclassifications (9,702 ) — (9,702 ) Less: amounts reclassified from accumulated other comprehensive loss (53 ) — (53 ) Balance at September 30, 2018 $ (15,762 ) $ 163 $ (15,599 ) The Company did not reclassify any amounts out of accumulated other comprehensive income (loss) for the three months ended September 30, 2019 and September 30, 2018 . The Company did not reclassify any amounts out of accumulated other comprehensive income (loss) for the nine months ended September 30, 2019 as compared to $53 thousand during the nine months ended September 30, 2018

Derivatives and Hedging Activit

Derivatives and Hedging Activities	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivatives and Hedging Activities The Company utilizes loan level derivatives which consist of interest-rate contracts (swaps, caps and floors), and risk participation agreements as part of the Company's interest-rate risk management strategy for certain assets and liabilities and not for speculative purposes. Based on the Company's intended use for the loan level derivatives at inception, the Company designates the derivative as either an economic hedge of an asset or liability, or a hedging instrument subject to the hedge accounting provisions of FASB ASC Topic 815, "Derivatives and Hedging". Interest-rate swap, cap and floor agreements are entered into as hedges against future interest-rate fluctuations on specifically identified assets or liabilities. The Company did not have derivative fair value hedges or derivative cash flow hedges as of September 30, 2019 or December 31, 2018 . Derivatives not designated as hedges are not speculative but rather result from a service the Company provides to certain customers for a fee. The Company executes loan level derivative products such as interest-rate swap agreements with commercial banking customers to aid them in managing their interest-rate risk. The interest-rate swap contracts allow the commercial banking customers to convert floating-rate loan payments to fixed-rate loan payments. The Company concurrently enters into offsetting swaps with a third party financial institution, effectively minimizing its net risk exposure resulting from such transactions. The third-party financial institution exchanges the customer's fixed-rate loan payments for floating-rate loan payments. As the interest-rate swap agreements associated with this program do not meet hedge accounting requirements, changes in the fair value are recognized directly in earnings. The Company utilizes risk participation agreements with other banks participating in commercial loan arrangements. Participating banks guarantee the performance on borrower-related interest rate swap contracts. Risk participation agreements are derivative financial instruments and are recorded at fair value. These derivatives are not designated as hedges and therefore, changes in fair value are recorded directly through earnings at each reporting period. Under a risk participation-out agreement, a derivative asset, the Company participates out a portion of the credit risk associated with the interest rate swap position executed with the commercial borrower, for a fee paid to the participating bank. Under a risk participation-in agreement, a derivative liability, the Company assumes, or participates in, a portion of the credit risk associated with the interest rate swap position with the commercial borrower, for a fee received from the other bank. The Company offers foreign exchange contracts to commercial borrowers to accommodate their business needs. These foreign exchange contracts do not qualify as hedges for accounting purposes. To mitigate the market and liquidity risk associated with these foreign exchange contracts, the Company enters into similar offsetting positions. Asset derivatives and liability derivatives are included in other assets and accrued expenses and other liabilities on the unaudited consolidated balance sheets. The following tables presents the Company's customer related derivative positions for the periods indicated below for those derivatives not designated as hedging. Notional Amount Maturing Number of Positions Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value September 30, 2019 (Dollars In Thousands) Loan level derivatives Receive fixed, pay variable 110 $ — $ 25,196 $ 8,896 $ 34,322 $ 924,062 $ 992,476 $ 79,661 Pay fixed, receive variable 110 — 25,196 8,896 34,322 924,062 992,476 79,661 Risk participation-out agreements 35 — 14,203 — — 162,952 177,155 1,555 Risk participation-in agreements 7 — — — — 56,096 56,096 385 Foreign exchange contracts Buys foreign currency, sells U.S. currency 18 $ 1,315 $ — $ — $ — $ — $ 1,315 $ 22 Sells foreign currency, buys U.S. currency 20 1,420 — — — — 1,420 16 Notional Amount Maturing Number of Positions Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value December 31, 2018 (Dollars In Thousands) Loan level derivatives Receive fixed, pay variable 86 $ 1,931 $ 26,419 $ — $ 31,762 $ 654,388 $ 714,500 $ 6,081 Pay fixed, receive variable 86 1,931 26,419 — 31,762 654,388 714,500 6,081 Risk participation-out agreements 26 — 14,892 — — 85,639 100,531 344 Risk participation-in agreements 5 — — — — 35,838 35,838 84 Foreign exchange contracts Buys foreign currency, sells U.S. currency 22 $ 6,573 $ — $ — $ — $ — $ 6,573 $ 123 Sells foreign currency, buys U.S. currency 37 6,582 — — — — 6,582 131 Certain derivative agreements contain provisions that require the Company to post collateral if the derivative exposure exceeds a threshold amount. The Company posted collateral to dealer counterparties of $93.4 million and $5.9 million in the normal course of business as of September 30, 2019 and December 31, 2018 , respectively. Dealer counterparties posted no collateral to the Company in the normal course of business as of September 30, 2019 and December 31, 2018 . The tables below present the offsetting of derivatives and amounts subject to master netting agreements not offset in the unaudited consolidated balance sheet at the dates indicated. At September 30, 2019 Gross Gross Amounts Statement of Financial Position Net Amounts Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position Net Amount Financial Instruments Pledged Cash Collateral Pledged (In Thousands) Asset derivatives Loan level derivatives $ 79,857 $ — $ 79,857 $ — $ — $ 79,857 Risk participation-out agreements 1,555 — 1,555 — — 1,555 Foreign exchange contracts 22 — 22 — — 22 Total $ 81,434 $ — $ 81,434 $ — $ — $ 81,434 Liability derivatives Loan level derivatives $ 79,857 $ — $ 79,857 $ 52,488 $ 40,870 $ (13,501 ) Risk participation-in agreements 385 — 385 — — 385 Foreign exchange contracts 16 — 16 — — 16 Total $ 80,258 $ — $ 80,258 $ 52,488 $ 40,870 $ (13,100 ) At December 31, 2018 Gross Gross Amounts Statement of Financial Position Net Amounts Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position Net Amount Financial Instruments Pledged Cash Collateral Pledged (In Thousands) Asset derivatives Loan level derivatives $ 22,013 $ — $ 22,013 $ — $ 50 $ 21,963 Risk participation-out agreements 344 — 344 — — 344 Foreign exchange contracts 131 — 131 — — 131 Total $ 22,488 $ — $ 22,488 $ — $ 50 $ 22,438 Liability derivatives Loan level derivatives $ 22,013 $ — $ 22,013 $ 5,877 $ — $ 16,136 Risk participation-in agreements 84 — 84 — — 84 Foreign exchange contracts 123 — 123 — — 123 Total $ 22,220 $ — $ 22,220 $ 5,877 $ — $ 16,343 The Company has agreements with certain of its derivative counterparties that contain credit-risk-related contingent provisions. These provisions provide the counterparty with the right to terminate its derivative positions and require the Company to settle its obligations under the agreements if the Company defaults on certain of its indebtedness or if the Company fails to maintain its status as a well-capitalized institution.

Stock Based Compensation

Stock Based Compensation	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Stock Based Compensation	Stock Based Compensation As of September 30, 2019 , the Company had 2 active recognition and retention plans: the 2011 Restricted Stock Award Plan ("2011 RSA") with 500,000 authorized shares and the 2014 Equity Incentive Plan ("2014 Plan") with 1,750,000 authorized shares. The 2011 RSA and the 2014 Plan are collectively referred to as the "Plans". The purpose of the Plans is to promote the long-term financial success of the Company and its subsidiaries by providing a means to attract, retain and reward individuals who contribute to such success and to further align their interests with those of the Company's stockholders. Of the awarded shares, generally 50% vest ratably over three years with one-third of such shares vesting at each of the first, second and third anniversary dates of the awards. These are referred to as "time-based shares". The remaining 50% of each award has a cliff vesting schedule and will vest three years after the award date based on the level of the Company's achievement of identified performance targets in comparison to the level of achievement of such identified performance targets by a defined peer group comprised of 45 financial institutions. These are referred to as "performance-based shares". If a participant leaves the Company prior to the third anniversary date of an award, any unvested shares are usually forfeited. Dividends declared with respect to shares awarded will be held by the Company and paid to the participant only when the shares vest. Under all the Plans, shares of the Company's common stock were reserved for issuance as restricted stock awards to officers, employees, and non-employee directors of the Company. Shares issued upon vesting may be either authorized but unissued shares or reacquired shares held by the Company as treasury shares. Any shares not issued because vesting requirements are not met will be retired back to treasury and be made available again for issuance under the Plans. During the three and nine months ended September 30, 2019 , 212,460 shares were issued upon satisfaction of required conditions of the Plans. During the three and nine months ended September 30, 2018 , 119,040 shares were issued upon satisfaction of required conditions of the Plans. Total expense for the Plans was $0.8 million and $0.7 million for the three months ended September 30, 2019 and 2018 , respectively. Total expense for the Plans was $2.5 million and $1.8 million for the nine months ended September 30, 2019 and 2018

Earnings per Share ("EPS")

Earnings per Share ("EPS")	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings per Share (EPS)	Earnings per Share ("EPS") The following table is a reconciliation of basic EPS and diluted EPS: Three Months Ended September 30, 2019 September 30, 2018 Basic Fully Diluted Basic Fully Diluted (Dollars in Thousands, Except Per Share Amounts) Numerator: Net income $ 22,596 $ 22,596 $ 22,460 $ 22,460 Denominator: Weighted average shares outstanding 79,700,403 79,700,403 80,315,050 80,315,050 Effect of dilutive securities — 183,107 — 200,417 Adjusted weighted average shares outstanding 79,700,403 79,883,510 80,315,050 80,515,467 EPS $ 0.28 $ 0.28 $ 0.28 $ 0.28 Nine Months Ended September 30, 2019 September 30, 2018 Basic Fully Diluted Basic Fully Diluted (Dollars in Thousands, Except Per Share Amounts) Numerator: Net income $ 65,534 $ 65,534 $ 61,924 $ 61,924 Denominator: Weighted average shares outstanding 79,676,456 79,676,456 79,471,238 79,471,238 Effect of dilutive securities — 191,227 — 269,754 Adjusted weighted average shares outstanding 79,676,456 79,867,683 79,471,238 79,740,992 EPS $ 0.82 $ 0.82 $ 0.78 $ 0.78

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments A description of the valuation methodologies used for assets and liabilities measured at fair value on a recurring and non-recurring basis, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. There were no changes in the valuation techniques used during the three and nine months ended September 30, 2019 and 2018 . Assets and Liabilities Recorded at Fair Value on a Recurring Basis The following tables set forth the carrying value of assets and liabilities measured at fair value on a recurring basis at the dates indicated: Carrying Value as of September 30, 2019 Level 1 Level 2 Level 3 Total (In Thousands) Assets: Investment securities available-for-sale: GSE debentures $ — $ 186,170 $ — $ 186,170 GSE CMOs — 91,851 — 91,851 GSE MBSs — 142,079 — 142,079 SBA commercial loan asset-backed securities — 37 — 37 Corporate debt obligations — 32,981 — 32,981 U.S. Treasury bonds — 14,221 — 14,221 Total investment securities available-for-sale $ — $ 467,339 $ — $ 467,339 Equity securities held-for-trading $ 3,567 $ 1,014 $ — $ 4,581 Loan level derivatives — 79,857 — 79,857 Risk participation-out agreements — 1,555 — 1,555 Foreign exchange contracts — 22 — 22 Liabilities: Loan level derivatives $ — $ 79,857 $ — $ 79,857 Risk participation-in agreements — 385 — 385 Foreign exchange contracts — 16 — 16 Carrying Value as of December 31, 2018 Level 1 Level 2 Level 3 Total (In Thousands) Assets: Investment securities available-for-sale: GSE debentures $ — $ 181,079 $ — $ 181,079 GSE CMOs — 103,130 — 103,130 GSE MBSs — 165,089 — 165,089 SBA commercial loan asset-backed securities — 51 — 51 Corporate debt obligations — 39,708 — 39,708 U.S. Treasury bonds — 13,736 — 13,736 Total investment securities available-for-sale $ — $ 502,793 $ — $ 502,793 Equity securities held-for-trading $ 3,235 $ 972 $ — $ 4,207 Loan level derivatives — 22,013 — 22,013 Risk participation-out agreements — 344 — 344 Foreign exchange contracts — 131 — 131 Liabilities: Loan level derivatives $ — $ 22,013 $ — $ 22,013 Risk participation-in agreements — 84 — 84 Foreign exchange contracts — 123 — 123 Investment Securities Available-for-Sale The fair value of investment securities is based principally on market prices and dealer quotes received from third-party and nationally-recognized pricing services for identical investment securities such as U.S. Treasury and agency securities. These prices are validated by comparing the primary pricing source with an alternative pricing source when available. When quoted market prices for identical securities are unavailable, the Company uses market prices provided by independent pricing services based on recent trading activity and other observable information, including but not limited to market interest-rate curves, referenced credit spreads and estimated prepayment speeds where applicable. These investments include GSE debentures, GSE mortgage-related securities, SBA commercial loan asset backed securities, corporate debt securities, and trust preferred securities, all of which are included in Level 2. As of September 30, 2019 and December 31, 2018 , no investment securities were valued using pricing models included in Level 3. Additionally, management reviews changes in fair value from period to period and performs testing to ensure that prices received from the third parties are consistent with management's expectation of the market. Changes in the prices obtained from the pricing service are analyzed from month to month, taking into consideration changes in market conditions including changes in mortgage spreads, changes in U.S. Treasury security yields and changes in generic pricing of 15 -year and 30 -year securities. Additional analysis may include a review of prices provided by other independent parties, a yield analysis, a review of average life changes using Bloomberg analytics and a review of historical pricing for a particular security. Equity Securities Held-for-Trading The fair value of equity securities held-for-trading is based principally on market prices and dealer quotes received from third-party and nationally-recognized pricing services. The Company's equity securities are priced this way and are included in Level 1 and Level 2. These prices are validated by comparing the primary pricing source with an alternative pricing source when available. Derivatives and Hedging Instruments The fair values for the interest-rate swap assets and liabilities, risk participation agreements (RPA in/out), and foreign exchange derivatives represent a Level 2 valuation and are based on settlement values adjusted for credit risks associated with the counterparties and the Company and observable market interest rate curves and foreign exchange rates where applicable. Credit risk adjustments consider factors such as the likelihood of default by the Company and its counterparties, its net exposures and remaining contractual life. To date, the Company has not realized any losses due to a counterparty's inability to pay any net uncollateralized position. Refer also to Note 8, "Derivatives and Hedging Activities." There were no transfers between levels for assets and liabilities recorded at fair value on a recurring basis during the three and nine months ended September 30, 2019 and 2018 , respectively. Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis Assets and liabilities measured at fair value on a non-recurring basis are summarized below at the dated indicated: Carrying Value as of September 30, 2019 Level 1 Level 2 Level 3 Total (In Thousands) Assets measured at fair value on a non-recurring basis: Collateral-dependent impaired loans and leases $ — $ — $ 2,330 $ 2,330 OREO — — 201 201 Repossessed assets — 1,931 — 1,931 Total assets measured at fair value on a non-recurring basis $ — $ 1,931 $ 2,531 $ 4,462 Carrying Value as of December 31, 2018 Level 1 Level 2 Level 3 Total (In Thousands) Assets measured at fair value on a non-recurring basis: Collateral-dependent impaired loans and leases $ — $ — $ 4,203 $ 4,203 OREO — — 3,054 3,054 Repossessed assets — 965 — 965 Total assets measured at fair value on a non-recurring basis $ — $ 965 $ 7,257 $ 8,222 Collateral-Dependent Impaired Loans and Leases For nonperforming loans and leases where the credit quality of the borrower has deteriorated significantly, fair values of the underlying collateral were estimated using purchase and sales agreements (Level 2), or comparable sales or recent appraisals (Level 3), adjusted for selling costs and other expenses. Other Real Estate Owned The Company records OREO at the lower of cost or fair value. In estimating fair value, the Company utilizes purchase and sales agreements (Level 2) or comparable sales, recent appraisals or cash flows discounted at an interest rate commensurate with the risk associated with these cash flows (Level 3), adjusted for selling costs and other expenses. Repossessed Assets Repossessed assets are carried at estimated fair value less costs to sell based on auction pricing (Level 2). The table below presents quantitative information about significant unobservable inputs (Level 3) for assets measured at fair value on a non-recurring basis at the dates indicated. Fair Value Valuation Technique At September 30, At December 31, 2018 (Dollars in Thousands) Auction-rate municipal obligations $ — $ — Discounted cash flow Collateral-dependent impaired loans and leases $ 2,329 $ 4,203 Appraisal of collateral (1) Other real estate owned 201 3,054 Appraisal of collateral (1) _______________________________________________________________________________ (1) Fair value is generally determined through independent appraisals of the underlying collateral. The Company may also use another available source of collateral assessment to determine a reasonable estimate of the fair value of the collateral. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of the unobservable inputs used may vary but is generally 0% - 10% on the discount for costs to sell and 0% - 15% on appraisal adjustments. Summary of Estimated Fair Values of Financial Instruments The following table presents the carrying amount, estimated fair value, and placement in the fair value hierarchy of the Company's financial instruments at the dates indicated. This table excludes financial instruments for which the carrying amount approximates fair value. Financial assets for which the fair value approximates carrying value include cash and cash equivalents, restricted equity securities, and accrued interest receivable. Financial liabilities for which the fair value approximates carrying value include non-maturity deposits, short-term borrowings, and accrued interest payable. Fair Value Measurements at September 30, 2019 Carrying Estimated Level 1 Level 2 Level 3 (In Thousands) Financial assets: Investment securities held-to-maturity: GSE debentures $ 38,624 $ 38,734 $ — $ 38,734 $ — GSE MBSs 9,937 9,835 — 9,835 — Municipal obligations 46,102 46,763 — 46,763 — Foreign government obligations 500 470 — — 470 Loans and leases, net 6,587,686 6,627,148 — — 6,627,148 Restricted equity securities 57,896 57,896 — — 57,896 Financial liabilities: Certificates of deposits 2,011,622 2,016,106 — 2,016,106 — Borrowed funds 986,405 990,173 — 990,173 — Fair Value Measurements at December 31, 2018 Carrying Estimated Level 1 Level 2 Level 3 (In Thousands) Financial assets: Investment securities held-to-maturity: GSE debentures $ 50,546 $ 49,601 $ — $ 49,601 $ — GSE MBSs 11,426 11,131 — 11,131 — Municipal obligations 52,304 51,598 — 51,598 — Foreign government obligations 500 500 — — 500 Loans held-for-sale 3,247 3,247 — 3,247 — Loans and leases, net 6,244,824 6,154,704 — — 6,154,704 Restricted equity securities 61,751 61,751 — — 61,751 Financial liabilities: Certificates of deposit 1,789,165 1,778,860 — 1,778,860 — Borrowed funds 920,542 886,545 — 886,545 — Investment Securities Held-to-Maturity The fair values of certain investment securities held-to-maturity are estimated using market prices provided by independent pricing services based on recent trading activity and other observable information, including but not limited to market interest-rate curves, referenced credit spreads and estimated prepayment speeds where applicable. These investments include GSE debentures, GSE MBSs, and municipal obligations, all of which are included in Level 2. Additionally, fair values of foreign government obligations are estimated using pricing models and are considered to be Level 3. Loans Held-for-Sale Fair value is measured using quoted market prices when available and would be categorized as Level 1. If quoted market prices are not available, comparable market values may be utilized. These assets are typically categorized as Level 2. Loans and Leases The fair values of performing loans and leases was estimated by segregating the portfolio into its primary loan and lease categories—commercial real estate mortgage, multi-family mortgage, construction, commercial, equipment financing, condominium association, residential mortgage, home equity and other consumer. These categories were further disaggregated based upon significant financial characteristics such as type of interest rate (fixed / variable) and payment status (current / past-due). Using the exit price valuation method, the Company discounts the contractual cash flows for each loan category using interest rates currently being offered for loans with similar terms to borrowers of similar quality and incorporates estimates of future loan prepayments. Restricted Equity Securities The fair values of certain restricted equity securities are estimated using observable inputs adjusted for other unobservable information, including but not limited to probability assumptions and similar discounts where applicable. These restricted equity securities are considered to be Level 3. Deposits The fair values of deposit liabilities with no stated maturity (demand, NOW, savings and money market savings accounts) are equal to the carrying amounts payable on demand. The fair value of certificates of deposit represents contractual cash flows discounted using interest rates currently offered on deposits with similar characteristics and remaining maturities. The fair value estimates for deposits do not include the benefit that results from the low-cost funding provided by the Company's core deposit relationships (deposit-based intangibles). Borrowed Funds The fair value of federal funds purchased is equal to the amount borrowed. The fair value of FHLBB advances and repurchase agreements represents contractual repayments discounted using interest rates currently available for borrowings with similar characteristics and remaining maturities. The fair values reported for retail repurchase agreements are based on the discounted value of contractual cash flows. The discount rates used are representative of approximate rates currently offered on borrowings with similar characteristics and maturities. The fair values reported for subordinated deferrable interest debentures are based on the discounted value of contractual cash flows. The discount rates used are representative of approximate rates currently offered on instruments with similar terms and maturities.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Commitments and Contingencies	Commitments and Contingencies Off-Balance Sheet Financial Instruments The Company is party to off-balance sheet financial instruments in the normal course of business to meet the financing needs of its customers and to reduce its own exposure to fluctuations in interest rates. These financial instruments include loan commitments, standby and commercial letters of credits, and loan level derivatives. According to GAAP, these financial instruments are not recorded in the financial statements until they are funded or related fees are incurred or received. The contract amounts reflect the extent of the involvement the Company has in particular classes of these instruments. Such commitments involve, to varying degrees, elements of credit risk and interest-rate risk in excess of the amount recognized in the consolidated balance sheets. The Company's exposure to credit loss in the event of non-performance by the counterparty is represented by the fair value of the instruments. The Company uses the same policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Financial instruments with off-balance-sheet risk at the dates indicated follow: At September 30, 2019 At December 31, 2018 (In Thousands) Financial instruments whose contract amounts represent credit risk: Commitments to originate loans and leases: Commercial real estate $ 75,280 $ 76,642 Commercial 77,395 75,713 Residential mortgage 63,229 16,363 Unadvanced portion of loans and leases 795,285 707,997 Unused lines of credit: Home equity 515,589 487,476 Other consumer 35,923 50,404 Other commercial 393 347 Unused letters of credit: Financial standby letters of credit 10,521 11,491 Performance standby letters of credit 3,696 3,075 Commercial and similar letters of credit 4,648 4,573 Loan level derivatives (Notional principal amounts): Receive fixed, pay variable 992,476 714,500 Pay fixed, receive variable 992,476 714,500 Risk participation-out agreements 177,155 100,531 Risk participation-in agreements 56,096 35,838 Foreign exchange contracts (Notional amounts): Buys foreign currency, sells U.S. currency 1,315 6,573 Sells foreign currency, buys U.S. currency 1,420 6,582 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require the payment of a fee by the customer. Since some of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer's creditworthiness on a case-by-case basis. The amount of collateral obtained, if any, is based on management's credit evaluation of the borrower. Standby and commercial letters of credits are conditional commitments issued by the Company to guarantee performance of a customer to a third party. These standby and commercial letters of credit are primarily issued to support the financing needs of the Company's commercial customers. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to customers. From time to time, the Company enters into loan level derivatives, risk participation agreements or foreign exchange contracts with commercial customers and third-party financial institutions. These derivatives allow the Company to offer long-term fixed-rate commercial loans while mitigating the interest-rate or foreign exchange risk of holding those loans. In a loan level derivative transaction, the Company lends to a commercial customer on a floating-rate basis and then enters into an loan level derivative with that customer. Concurrently, the Company enters into offsetting swaps with a third-party financial institution, effectively minimizing its net interest-rate risk exposure resulting from such transactions. The fair value of derivative assets and liabilities was $81.4 million and $80.3 million , respectively, as of September 30, 2019 . The fair value of derivative assets and liabilities was $22.5 million and $22.2 million , respectively, as of December 31, 2018 . The fair value of foreign exchange assets and liabilities was $22 thousand and $16 thousand , respectively, as of September 30, 2019 . The fair value of foreign exchange assets and liabilities was $131 thousand and $123 thousand as of December 31, 2018 . Lease Commitments The Company leases certain office space under various noncancellable operating leases as well as certain other assets. These leases have original terms ranging from 3 years to over 25 years . Certain leases contain renewal options and escalation clauses which can increase rental expenses based principally on the consumer price index and fair market rental value provisions. All of the Company's current outstanding leases are classified as operating leases. The Company considered the following criteria when determining whether a contract contains a lease, the existence of an identifiable asset and the right to obtain substantially all of the economic benefits from use of the asset through the period. The Company used the FHLB classic advance rates available as of September 30, 2019 as the discount rate to determine the net present value of the remaining lease payments. At September 30, 2019 (In Thousands) The components of lease expense were as follow: Operating lease cost $ 4,644 Supplemental cash flow information related to leases was as follows: Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 4,658 Right-of-use assets obtained in exchange for new lease obligations: Operating leases $ 72 Supplemental balance sheet information related to leases was as follows: Operating Leases Operating lease right-of-use assets $ 26,216 Operating lease liabilities 26,216 Weighted Average Remaining Lease Term Operating leases 7.6 years Weighted Average Discount Rate Operating leases 3.2 % A summary of future minimum rental payments under such leases at the dates indicated follows: Minimum Rental Payments September 30, 2019 December 31, 2018 (In Thousands) Remainder of 2019 $ 1,553 $ 4,224 Year ending: 2020 5,883 4,932 2021 5,263 4,418 2022 4,575 3,602 2023 3,672 2,734 2024 2,305 1,866 Thereafter 6,163 6,637 Total $ 29,414 $ 28,413 Less imputed interest (3,198 ) Present value of lease liability $ 26,216 Certain leases contain escalation clauses for real estate taxes and other expenditures, which are not included above. The total real estate taxes were $1.4 million and other expenditures were $0.3 million for both the nine months ended September 30, 2019 and 2018 . Total rental expense was $1.5 million and $1.6 million for the three months ended September 30, 2019 and 2018 , respectively. Total rental expense was $4.6 million for the nine months ended September 30, 2019 and 2018 . Legal Proceedings In the normal course of business, there are various outstanding legal proceedings. In the opinion of management, after consulting with legal counsel, the consolidated financial position and results of operations of the Company are not expected to be affected materially by the outcome of such proceedings.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers Overview Revenue from contracts with customers in the scope of Accounting Standards Codification (“ASC”) ("Topic 606") is measured based on the consideration specified in the contract with a customer and excludes amounts collected on behalf of third parties. The Company recognizes revenue from contracts with customers when it satisfies its performance obligations. The Company’s performance obligations are generally satisfied as services are rendered and can either be satisfied at a point in time or over time. Unsatisfied performance obligations at the report date are not material to our consolidated financial statements. In certain cases, other parties are involved with providing services to our customers. If the Company is a principal in the transaction (providing services itself or through a third party on its behalf), revenues are reported based on the gross consideration received from the customer and any related expenses are reported gross in noninterest expense. If the Company is an agent in the transaction (referring to another party to provide services), the Company reports its net fee or commission retained as revenue. Accounting Policy Updates The Company adopted Topic 606, “Revenue from Contracts with Customers” effective January 1, 2018 and has applied the guidance to all contracts within the scope of Topic 606 as of that date. As a result, the Company has modified its accounting policy for revenue recognition as detailed in this Note. The Company applied Topic 606 using the modified retrospective method, therefore, the prior period comparative information has not been adjusted and continues to be reported under Topic 605. There was no cumulative effect adjustment as of January 1, 2018, and there were no material changes to our consolidated financial statements at or for the nine months ended September 30, 2019 , as a result of adopting Topic 606. The Company applied the practical expedient pertaining to contracts with original expected duration of one year or less and does not disclose information about remaining performance obligations on such contracts. The Company also applied the practical expedient pertaining to contracts for which, at contract inception, the period between when the entity transfers the services and when the customer pays for those services will be one year or less. As such, the Company does not adjust the consideration from customers for the effects of a significant financing component. A substantial portion of the Company’s revenue is specifically excluded from the scope of Topic 606. This exclusion is associated with financial instruments, including interest income on loans and investment securities, in addition to loan derivative income and gains on loan and investment sales. For the revenue that is in-scope of Topic 606, the following is a description of principal activities from which the Company generates its revenue from contracts with customers, separated by the timing of revenue recognition. Revenue Recognized at a Point in Time The Company recognizes revenue that is transactional in nature and such revenue is earned at a point in time. Revenue that is recognized at a point in time includes card interchange fees (fee income related to debit card transactions), ATM fees, wire transfer fees, overdraft charge fees, and stop-payment and returned check fees. Additionally, revenue is collected from loan fees, such as letters of credit, line renewal fees and application fees. Such revenue is derived from transactional information and is recognized as revenue immediately as the transactions occur or upon providing the service to complete the customer’s transaction. Revenue Recognized Over Time The Company recognizes revenue over a period of time, generally monthly, as services are performed and performance obligations are satisfied. Such revenue includes commissions on investments, insurance sales and service charges on deposit accounts. Fee revenue from service charges on deposit accounts represents the service charges assessed to customers who hold deposit accounts at the Banks.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events As previously disclosed on October 23, 2019, Brookline Bank has entered into a merger agreement with First Ipswich. Pending receipt of the applicable regulatory approvals, Brookline Bank anticipates closing the transaction in the first quarter of 2020. As previously disclosed on July 31, 2019, Brookline Bank converted its charter from a Massachusetts-chartered savings bank to a Massachusetts-chartered trust company and ended its membership in DIF, which insures Massachusetts-chartered savings bank deposits in excess of federal deposit insurance coverage. Brookline Bank’s growth in deposit size necessitated Brookline Bank’s withdrawal from the DIF and the concurrent charter conversion of Brookline Bank. Brookline Bank will continue to be supervised by the FRB and DOB. Brookline’s deposit accounts will continue to be insured by the deposit insurance fund of the FDIC up to applicable limits. Excess deposits that were insured by the DIF on July 31, 2019 will continue to be insured by the DIF until July 31, 2020. Term deposits in excess of the FDIC insurance coverage will continue to be insured by the DIF until they reach maturity.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies
Basis of Financial Statement Presentation	Basis of Financial Statement Presentation The unaudited consolidated financial statements of the Company presented herein have been prepared pursuant to the rules of the Securities and Exchange Commission (“SEC”) for quarterly reports on Form 10-Q and do not include all of the information and note disclosures required by U.S. generally accepted accounting principles (“GAAP”). In the opinion of management, all adjustments (consisting of normal recurring adjustments) and disclosures considered necessary for the fair presentation of the accompanying consolidated financial statements have been included. Interim results are not necessarily reflective of the results of the entire year. The accompanying unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Annual Report on Form 10-K for the fiscal year ended December 31, 2018 .
Consolidation	The unaudited consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany transactions and balances are eliminated in consolidation.
Use of Estimates	In preparing these consolidated financial statements, Management is required to make significant estimates and assumptions that affect the reported amounts of assets, liabilities, income, expenses and disclosure of contingent assets and liabilities. Actual results could differ from those estimates based upon changing conditions, including economic conditions and future events. Material estimates that are particularly susceptible to significant changes in the near-term include the determination of the allowance for loan and lease losses, the determination of fair market values of assets and liabilities, including acquired loans and leases, the review of goodwill and intangible assets for impairment and the review of deferred tax assets for valuation allowances. The judgments used by Management in applying these critical accounting policies may be affected by a further and prolonged deterioration in the economic environment, which may result in changes to future financial results. For example, subsequent evaluations of the loan and lease portfolio, in light of the factors then prevailing, may result in significant changes in the allowance for loan and lease losses in future periods, and the inability to collect outstanding principal may result in increased loan and lease losses.
Reclassification	Reclassification Certain previously reported amounts have been reclassified to conform to the current year's presentation.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In April 2019, FASB issued ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments to improve the Codifications or correct any unintended application. Codification improvements to Update 2016-13 (Topic 326) will be effective on the same date as requirements in 2016-13. Codification improvements to Update 2017-12 (Topic 815) will be effective as of the beginning of the first annual period beginning after the issuance date and Update 2016-01 (Topic 825) will be effective for fiscal years beginning after December 15, 2019. Management believes that this ASU does apply and has not determined the impact, if any, as of September 30, 2019 . In August 2018, FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40), to add additional guidance to help entities evaluate the accounting for fees paid by a customer in a cloud computing arrangement by providing guidance for determining when the arrangement includes a software license. The amendments in this update are effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption of the amendments in this update is permitted, including adoption in any interim period. Management is still determining the impact of this ASU, as of September 30, 2019 . In August 2018, FASB issued ASU 2018-14, Compensation-Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20), to modify the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. This ASU is effective for fiscal years ending after December 15, 2020, for public business entities and for fiscal years ending after December 15, 2021, for all other entities. Early adoption is permitted. Management believes that this ASU does apply and has not determined the impact, if any, as of September 30, 2019 . In August 2018, FASB issued ASU 2018-13, Fair Value Measurement (Topic 820), to modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, based on the concepts in the Concepts Statement, including the consideration of costs and benefits. This ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. Management believes that this ASU does apply and has not determined the impact, if any, as of September 30, 2019 . In June 2016, the FASB issued ASU 2016-13, Financial instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The intent of this ASU is to replace the current GAAP method of calculating credit losses. Current GAAP uses a higher threshold at which probable losses can be calculated and recorded. The new process will require institutions to account for probable losses that originally would not have been part of the calculation. The calculation will incorporate future forecasting in addition to historical and current measures. For public entities that file with the SEC, this ASU is effective for the fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. This ASU must be applied to AFS Debt Securities, HTM Debt Securities, and HTM Loans . A retrospective approach will be applied cumulatively to retained earnings. Early adoption is permitted as of the fiscal years beginning after December 15, 2018. In November 2018, FASB issued ASU 2018-19 to clarify that operating lease receivables are not in scope of the credit losses standard. Management has determined that ASU 2016-13 does apply, but has not determined the impact, as of September 30, 2019 . In preparation for the adoption in 2020 of this ASU, Management formed a steering committee to oversee the adoption of ASU 2016-13. The steering committee, along with a project team, has developed an approach for implementation and has selected a third party software service provider. The new software model will include additional assumptions used to calculate credit losses over the estimated life of the financial assets and will include the impact of forecasted economic conditions. The project team is in the testing phase of the third party software by validating model results and assessing data inputs and potential model assumptions. The third party software is being used for both the loan and securities portfolios. Loan portfolios are to be modeled using a lifetime loss rate approach. Securities portfolios are to be modeled using a discounted cash flow approach. Management expects to have completed the testing phase during 4Q 2019. AFS Corporate Securities and HTM Municipal security segments necessitate a CECL allowance. As mentioned, the Company will utilize a DCF-based credit loss model. This model generates Expected Cash Flows on a security level and applies a Probability of Default in conjunction with a Loss Given Default to each instance of cash flow. The Company sources PD and LGD assumptions from white paper studies. The Company will employ a zero-loss expectation for securities issued by either the federal government or government-sponsored entities. The faith and credit of the United States government either implicitly or explicitly backs these securities and, thus, they have no associated credit risk. These zero-loss securities represent 85% of the Company’s investment portfolio. The Company is progressing with development of accounting policies and establishment of internal controls relevant to the updated methodologies and models. These aspects of the new methodologies are also expected to be completed during 4Q 2019. In February 2016, FASB issued ASU 2016-02, Leases (“ASU 2016-02”). This ASU requires lessees to record most leases on their balance sheet but recognize expenses on their income statements in a manner similar to current accounting. Subsequently, the FASB issued ASU 2018-10, ASU 2018-11, ASU 2018-20 and ASU 2019-01 to update provisions to ASU 2016-02. The Company has adopted all of the above mentioned ASU's regarding leases as of January 1, 2019. The standard had a material impact on our consolidated balance sheet by recognizing right-of-use asset operating leases and operating lease liabilities on the balance sheet. However, there was no impact on our consolidated income statement as the timing of the expense recognition has not changed. Additional details can be found in Note 12.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Schedule of securities available-for-sale securities	The following tables set forth investment securities available-for-sale, held-to-maturity and equity securities held-for-trading at the dates indicated: At September 30, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (In Thousands) Investment securities available-for-sale: GSE debentures $ 182,966 $ 3,240 $ 36 $ 186,170 GSE CMOs 92,883 47 1,079 91,851 GSE MBSs 141,853 739 513 142,079 SBA commercial loan asset-backed securities 37 — — 37 Corporate debt obligations 32,519 462 — 32,981 U.S. Treasury bonds 13,842 379 — 14,221 Total investment securities available-for-sale $ 464,100 $ 4,867 $ 1,628 $ 467,339 Investment securities held-to-maturity: GSE debentures $ 38,624 $ 129 $ 19 $ 38,734 GSEs MBSs 9,937 — 102 9,835 Municipal obligations 46,102 663 2 46,763 Foreign government obligations 500 — 30 470 Total investment securities held-to-maturity $ 95,163 $ 792 $ 153 $ 95,802 Equity securities held-for-trading $ 4,581 December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (In Thousands) Investment securities available-for-sale: GSE debentures $ 184,072 $ 99 $ 3,092 $ 181,079 GSE CMOs 107,363 17 4,250 103,130 GSE MBSs 169,334 124 4,369 165,089 SBA commercial loan asset-backed securities 51 — — 51 Corporate debt obligations 40,618 — 910 39,708 U.S. Treasury bonds 13,812 65 141 13,736 Total investment securities available-for-sale $ 515,250 $ 305 $ 12,762 $ 502,793 Investment securities held-to-maturity: GSE debentures $ 50,546 $ 22 $ 967 $ 49,601 GSEs MBSs 11,426 — 295 11,131 Municipal obligations 52,304 10 716 51,598 Foreign government obligations 500 — — 500 Total investment securities held-to-maturity $ 114,776 $ 32 $ 1,978 $ 112,830 Equity securities held-for-trading $ 4,207
Investment securities in a continuous unrealized loss position	Investment securities as of September 30, 2019 and December 31, 2018 that have been in a continuous unrealized loss position for less than twelve months or twelve months or longer are as follows: At September 30, 2019 Less than Twelve Months Twelve Months or Longer Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses (In Thousands) Investment securities available-for-sale: GSE debentures $ 5,564 $ 22 $ 9,777 $ 14 $ 15,341 $ 36 GSE CMOs 23,489 176 61,385 903 84,874 1,079 GSE MBSs 24,787 84 44,672 429 69,459 513 SBA commercial loan asset-backed securities — — 36 — 36 — Temporarily impaired investment securities available-for-sale 53,840 282 115,870 1,346 169,710 1,628 Investment securities held-to-maturity: GSE debentures 2,986 12 2,991 7 5,977 19 GSEs MBSs — — 9,772 102 9,772 102 Municipal obligations 3,508 2 206 — 3,714 2 Foreign government obligations 470 30 — — 470 30 Temporarily impaired investment securities held-to-maturity 6,964 44 12,969 109 19,933 153 Total temporarily impaired investment securities $ 60,804 $ 326 $ 128,839 $ 1,455 $ 189,643 $ 1,781 December 31, 2018 Less than Twelve Months Twelve Months or Longer Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses (In Thousands) Investment securities available-for-sale: GSE debentures $ 25,780 $ 191 $ 130,284 $ 2,901 $ 156,064 $ 3,092 GSE CMOs — — 102,630 4,250 102,630 4,250 GSE MBSs 21,487 113 138,051 4,256 159,538 4,369 SBA commercial loan asset-backed securities — — 51 — 51 — Corporate debt obligations 10,019 93 29,689 817 39,708 910 U.S. Treasury bonds 3,927 37 4,753 104 8,680 141 Temporarily impaired investment securities available-for-sale 61,213 434 405,458 12,328 466,671 12,762 Investment securities held-to-maturity: GSE debentures — — 40,653 967 40,653 967 GSEs MBSs — — 11,080 295 11,080 295 Municipal obligations 14,813 107 35,058 609 49,871 716 Foreign government obligations — — 500 — 500 — Temporarily impaired investment securities held-to-maturity 14,813 107 87,291 1,871 102,104 1,978 Total temporarily impaired investment securities $ 76,026 $ 541 $ 492,749 $ 14,199 $ 568,775 $ 14,740
Schedule of maturities of the investments in debt securities	The final stated maturities of the debt securities are as follows for the periods indicated: At September 30, 2019 At December 31, 2018 Amortized Cost Estimated Fair Value Weighted Average Rate Amortized Cost Estimated Fair Value Weighted Average Rate (Dollars in Thousands) Investment securities available-for-sale: Within 1 year $ 16,804 $ 16,795 1.85 % $ 12,041 $ 12,007 2.03 % After 1 year through 5 years 211,446 214,683 2.19 % 195,701 192,692 2.14 % After 5 years through 10 years 70,538 71,239 2.16 % 115,665 112,819 2.18 % Over 10 years 165,312 164,622 2.12 % 191,843 185,275 2.17 % $ 464,100 $ 467,339 2.15 % $ 515,250 $ 502,793 2.16 % Investment securities held-to-maturity: Within 1 year $ 6,499 $ 6,504 1.85 % $ 7,640 $ 7,618 1.17 % After 1 year through 5 years 68,949 69,419 1.85 % 72,735 71,492 1.84 % After 5 years through 10 years 9,840 10,107 1.78 % 23,025 22,640 2.20 % Over 10 years 9,875 9,772 1.92 % 11,376 11,080 2.13 % $ 95,163 $ 95,802 1.85 % $ 114,776 $ 112,830 1.89 %
Summary of gains and losses from sale of securities	Sales of investment and restricted equity securities are summarized as follows: Nine Months Ended September 30, 2019 Nine Months Ended September 30, 2018 (In Thousands) Proceeds from sale of trust preferred, marketable and restricted equity securities $ — $ 2,700 Sales of trading securities — — Gross gains from securities sales — 1,230 Gross losses from securities sales — (68 ) Gain on sales of securities, net $ — $ 1,162

Loans and Leases (Tables)

Loans and Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Summary of loan and lease balances for the originated and acquired portfolios	The following tables present loan and lease balances and weighted average coupon rates for the originated and acquired loan and lease portfolios at the dates indicated: At September 30, 2019 Originated Acquired Total Balance Weighted Average Coupon Balance Weighted Average Coupon Balance Weighted Average Coupon (Dollars In Thousands) Commercial real estate loans: Commercial real estate $ 2,343,137 4.49 % $ 97,954 4.66 % $ 2,441,091 4.50 % Multi-family mortgage 882,665 4.37 % 36,569 4.60 % 919,234 4.38 % Construction 220,685 5.31 % 8,441 6.73 % 229,126 5.36 % Total commercial real estate loans 3,446,487 4.51 % 142,964 4.77 % 3,589,451 4.52 % Commercial loans and leases: Commercial 747,968 4.83 % 18,915 5.11 % 766,883 4.84 % Equipment financing 1,026,761 7.73 % 2,519 5.98 % 1,029,280 7.73 % Condominium association 54,225 4.87 % — — % 54,225 4.87 % Total commercial loans and leases 1,828,954 6.46 % 21,434 5.21 % 1,850,388 6.45 % Consumer loans: Residential mortgage 680,631 4.09 % 112,102 4.50 % 792,733 4.15 % Home equity 341,114 4.73 % 34,143 5.12 % 375,257 4.77 % Other consumer 38,890 4.79 % 102 17.88 % 38,992 4.83 % Total consumer loans 1,060,635 4.32 % 146,347 4.65 % 1,206,982 4.36 % Total loans and leases $ 6,336,076 5.04 % $ 310,745 4.74 % $ 6,646,821 5.03 % At December 31, 2018 Originated Acquired Total Balance Weighted Average Coupon Balance Weighted Average Coupon Balance Weighted Average Coupon (Dollars In Thousands) Commercial real estate loans: Commercial real estate $ 2,208,904 4.61 % $ 121,821 4.62 % $ 2,330,725 4.61 % Multi-family mortgage 799,813 4.51 % 47,898 4.58 % 847,711 4.51 % Construction 151,138 5.62 % 22,162 6.74 % 173,300 5.76 % Total commercial real estate loans 3,159,855 4.63 % 191,881 4.85 % 3,351,736 4.64 % Commercial loans and leases: Commercial 712,630 4.96 % 23,788 5.39 % 736,418 4.97 % Equipment financing 978,840 7.61 % 3,249 5.97 % 982,089 7.60 % Condominium association 50,451 4.70 % — — % 50,451 4.70 % Total commercial loans and leases 1,741,921 6.44 % 27,037 5.46 % 1,768,958 6.43 % Consumer loans: Residential mortgage 653,059 4.09 % 129,909 4.45 % 782,968 4.15 % Home equity 331,014 5.05 % 45,470 5.39 % 376,484 5.09 % Other consumer 23,260 5.55 % 110 17.81 % 23,370 5.61 % Total consumer loans 1,007,333 4.44 % 175,489 4.70 % 1,182,822 4.48 % Total loans and leases $ 5,909,109 5.13 % $ 394,407 4.83 % $ 6,303,516 5.11 %
Schedule of activity in the accretable yield for acquired loan portfolio	The following table summarizes activity in the accretable yield for the acquired loan portfolio for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (In Thousands) Balance at beginning of period $ 6,852 $ 8,813 $ 7,905 $ 10,522 Accretion (1,302 ) (890 ) (3,143 ) (3,223 ) Reclassification from nonaccretable difference as a result of changes in expected cash flows 806 224 1,594 848 Balance at end of period $ 6,356 $ 8,147 $ 6,356 $ 8,147

Allowance for Loan and Lease _2

Allowance for Loan and Lease Losses (Tables)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Schedule of changes in the allowance for loan and lease losses	The following tables present the changes in the allowance for loan and lease losses and the recorded investment in loans and leases by portfolio segment for the periods indicated: Three Months Ended September 30, 2019 Commercial Real Estate Commercial Consumer Total (In Thousands) Balance at June 30, 2019 $ 28,668 $ 24,333 $ 5,634 $ 58,635 Charge-offs — (1,175 ) (15 ) (1,190 ) Recoveries — 772 52 824 Provision for loan and lease losses 361 463 42 866 Balance at September 30, 2019 $ 29,029 $ 24,393 $ 5,713 $ 59,135 Three Months Ended September 30, 2018 Commercial Real Estate Commercial Consumer Total (In Thousands) Balance at June 30, 2018 $ 27,045 $ 26,120 $ 4,816 $ 57,981 Charge-offs — (1,198 ) (29 ) (1,227 ) Recoveries — 619 44 663 Provision for loan and lease losses 319 2,217 44 2,580 Balance at September 30, 2018 $ 27,364 $ 27,758 $ 4,875 $ 59,997 Nine Months Ended September 30, 2019 Commercial Real Estate Commercial Consumer Total (In Thousands) Balance at December 31, 2018 $ 28,187 $ 25,283 $ 5,222 $ 58,692 Charge-offs — (7,088 ) (56 ) (7,144 ) Recoveries — 1,454 141 1,595 Provision for loan and lease losses 842 4,744 406 5,992 Balance at September 30, 2019 $ 29,029 $ 24,393 $ 5,713 $ 59,135 Nine Months Ended September 30, 2018 Commercial Real Estate Commercial Consumer Total (In Thousands) Balance at December 31, 2017 $ 27,112 $ 26,333 $ 5,147 $ 58,592 Charge-offs (103 ) (5,387 ) (134 ) (5,624 ) Recoveries — 1,972 253 2,225 Provision (credit) for loan and lease losses 355 4,840 (391 ) 4,804 Balance at September 30, 2018 $ 27,364 $ 27,758 $ 4,875 $ 59,997
Provisions for credit losses	The provisions for credit losses are set forth below for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (In Thousands) Provision for loan and lease losses: Commercial real estate $ 361 $ 319 $ 842 $ 355 Commercial 463 2,217 4,744 4,840 Consumer 42 44 406 (391 ) Total provision for loan and lease losses 866 2,580 5,992 4,804 Unfunded credit commitments 5 137 (11 ) 24 Total provision for credit losses $ 871 $ 2,717 $ 5,981 $ 4,828
Summary of the recorded investments by credit quality indicator, by loan class	Credit Quality Information The following tables present the recorded investment in loans in each class as of September 30, 2019 , by credit quality indicator. At September 30, 2019 Commercial Real Estate Multi- Family Mortgage Construction Commercial Equipment Financing Condominium Association Other Consumer Total (In Thousands) Originated: Loan rating: Pass $ 2,336,984 $ 882,578 $ 220,685 $ 729,682 $ 1,012,405 $ 54,062 $ 38,889 $ 5,275,285 OAEM 2,982 — — 11,751 1,451 — — 16,184 Substandard 3,171 87 — 6,532 11,455 163 1 21,409 Doubtful — — — 3 1,450 — — 1,453 Total originated 2,343,137 882,665 220,685 747,968 1,026,761 54,225 38,890 5,314,331 Acquired: Loan rating: Pass 86,854 36,569 3,571 18,313 2,512 — 102 147,921 OAEM 2,076 — 4,870 370 — — — 7,316 Substandard 9,024 — — 232 7 — — 9,263 Total acquired 97,954 36,569 8,441 18,915 2,519 — 102 164,500 Total loans $ 2,441,091 $ 919,234 $ 229,126 $ 766,883 $ 1,029,280 $ 54,225 $ 38,992 $ 5,478,831 As of September 30, 2019 , there were no loans categorized as definite loss. At September 30, 2019 Residential Mortgage Home Equity (Dollars In Thousands) Originated: Loan-to-value ratio: Less than 50% $ 182,444 23.0 % $ 136,072 36.3 % 50% - 69% 285,430 36.0 % 90,917 24.2 % 70% - 79% 181,726 22.9 % 78,552 20.9 % 80% and over 19,922 2.5 % 35,573 9.5 % Data not available* 11,109 1.4 % — — % Total originated 680,631 85.8 % 341,114 90.9 % Acquired: Loan-to-value ratio: Less than 50% 34,453 4.3 % 18,148 4.8 % 50%—69% 48,522 6.3 % 8,727 2.3 % 70%—79% 17,551 2.2 % 712 0.2 % 80% and over 5,885 0.7 % 2,559 0.7 % Data not available 5,691 0.7 % 3,997 1.1 % Total acquired 112,102 14.2 % 34,143 9.1 % Total loans $ 792,733 100.0 % $ 375,257 100.0 % _______________________________________________________________________________ * Represents in process general ledger accounts for which data are not available. The following tables present the recorded investment in loans in each class as of December 31, 2018 , by credit quality indicator. At December 31, 2018 Commercial Real Estate Multi- Family Mortgage Construction Commercial Equipment Financing Condominium Association Other Consumer Total (In Thousands) Originated: Loan rating: Pass $ 2,198,377 $ 799,483 $ 150,742 $ 685,773 $ 969,275 $ 50,186 $ 23,249 $ 4,877,085 OAEM 6,096 — — 3,726 52 — — 9,874 Substandard 4,431 330 396 22,870 6,895 265 11 35,198 Doubtful — — — 261 2,618 — — 2,879 Total originated 2,208,904 799,813 151,138 712,630 978,840 50,451 23,260 4,925,036 Acquired: Loan rating: Pass 111,919 47,715 22,162 23,250 3,240 — 110 208,396 OAEM 626 — — 236 — — — 862 Substandard 9,276 183 — 302 9 — — 9,770 Total acquired 121,821 47,898 22,162 23,788 3,249 — 110 219,028 Total loans $ 2,330,725 $ 847,711 $ 173,300 $ 736,418 $ 982,089 $ 50,451 $ 23,370 $ 5,144,064 As of December 31, 2018 , there were no loans categorized as definite loss. At December 31, 2018 Residential Mortgage Home Equity (Dollars In Thousands) Originated: Loan-to-value ratio: Less than 50% $ 171,523 21.9 % $ 142,534 37.9 % 50%—69% 287,337 36.7 % 84,423 22.4 % 70%—79% 173,870 22.2 % 73,898 19.6 % 80% and over 19,030 2.4 % 30,129 8.0 % Data not available* 1,299 0.2 % 30 — % Total originated 653,059 83.4 % 331,014 87.9 % Acquired: Loan-to-value ratio: Less than 50% 36,752 4.6 % 24,705 6.6 % 50%—69% 53,788 6.9 % 10,353 2.7 % 70%—79% 26,510 3.4 % 1,000 0.3 % 80% and over 6,701 0.9 % 4,348 1.2 % Data not available 6,158 0.8 % 5,064 1.3 % Total acquired 129,909 16.6 % 45,470 12.1 % Total loans $ 782,968 100.0 % $ 376,484 100.0 % _______________________________________________________________________________ * Represents in process general ledger accounts for which data are not available.
Information regarding troubled debt restructuring loans	The following table sets forth information regarding TDR loans and leases at the dates indicated: At September 30, 2019 At December 31, 2018 (In Thousands) Troubled debt restructurings: On accrual $ 22,233 $ 12,257 On nonaccrual 5,763 8,684 Total troubled debt restructurings $ 27,996 $ 20,941 The following table presents information regarding foreclosed residential real estate property for the periods indicated: At September 30, 2019 At December 31, 2018 (In Thousands) Foreclosed residential real estate property held by the creditor $ — $ 629 Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure $ 701 $ 121
Information regarding the aging of past due loans, by loan class	The following tables present an age analysis of the recorded investment in total loans and leases as of September 30, 2019 and December 31, 2018 . At September 30, 2019 Past Due Loans and Leases Past Due Greater Than 90 Days and Accruing 31-60 Days 61-90 Days Greater Than 90 Days Total Current Total Loans and Leases Nonaccrual Loans and Leases (In Thousands) Originated: Commercial real estate loans: Commercial real estate $ 2,157 $ — $ 2,540 $ 4,697 $ 2,338,440 $ 2,343,137 $ — $ 2,811 Multi-family mortgage 557 — — 557 882,108 882,665 — 87 Construction — 1,306 — 1,306 219,379 220,685 — — Total commercial real estate loans 2,714 1,306 2,540 6,560 3,439,927 3,446,487 — 2,898 Commercial loans and leases: Commercial 731 1,314 3,348 5,393 742,575 747,968 1,241 2,933 Equipment financing 3,108 1,683 7,741 12,532 1,014,229 1,026,761 — 12,817 Condominium association 451 — — 451 53,774 54,225 — 163 Total commercial loans and leases 4,290 2,997 11,089 18,376 1,810,578 1,828,954 1,241 15,913 Consumer loans: Residential mortgage 685 — 594 1,279 679,352 680,631 — 1,605 Home equity 504 201 113 818 340,296 341,114 1 254 Other consumer 22 5 2 29 38,861 38,890 — 3 Total consumer loans 1,211 206 709 2,126 1,058,509 1,060,635 1 1,862 Total originated loans and leases $ 8,215 $ 4,509 $ 14,338 $ 27,062 $ 6,309,014 $ 6,336,076 $ 1,242 $ 20,673 At September 30, 2019 Past Due Loans and Leases Past Due Greater Than 90 Days and Accruing 31-60 Days 61-90 Days Greater Than 90 Days Total Current Total Loans and Leases Nonaccrual Loans and Leases (1) (In Thousands) Acquired: Commercial real estate loans: Commercial real estate $ — $ 327 $ 8,864 $ 9,191 $ 88,763 $ 97,954 $ 8,794 $ 99 Multi-family mortgage 348 — — 348 36,221 36,569 — — Construction — — — — 8,441 8,441 — — Total commercial real estate loans 348 327 8,864 9,539 133,425 142,964 8,794 99 Commercial loans and leases: Commercial — — 232 232 18,683 18,915 26 206 Equipment financing — — 7 7 2,512 2,519 7 — Total commercial loans and leases — — 239 239 21,195 21,434 33 206 Consumer loans: Residential mortgage 1,892 — 1,776 3,668 108,434 112,102 1,776 — Home equity 548 6 42 596 33,547 34,143 40 650 Other consumer — — — — 102 102 — — Total consumer loans 2,440 6 1,818 4,264 142,083 146,347 1,816 650 Total acquired loans and leases $ 2,788 $ 333 $ 10,921 $ 14,042 $ 296,703 $ 310,745 $ 10,643 $ 955 Total loans and leases $ 11,003 $ 4,842 $ 25,259 $ 41,104 $ 6,605,717 $ 6,646,821 $ 11,885 $ 21,628 ___________________________________________________________ (1) Loans and leases acquired with deteriorated credit quality are always accruing. At December 31, 2018 Past Due Loans and Leases Past Due Greater Than 90 Days and Accruing 31-60 Days 61-90 Days Greater Than 90 Days Total Current Total Loans and Leases Nonaccrual Loans and Leases (In Thousands) Originated: Commercial real estate loans: Commercial real estate $ 5,139 $ 896 $ 2,962 $ 8,997 $ 2,199,907 $ 2,208,904 $ 277 $ 3,806 Multi-family mortgage 893 — 145 1,038 798,775 799,813 — 330 Construction 297 — 396 693 150,445 151,138 — 396 Total commercial real estate loans 6,329 896 3,503 10,728 3,149,127 3,159,855 277 4,532 Commercial loans and leases: Commercial 2,021 582 6,244 8,847 703,783 712,630 1,962 6,421 Equipment financing 2,509 650 5,685 8,844 969,996 978,840 12 9,500 Condominium association 320 — — 320 50,131 50,451 — 265 Total commercial loans and leases 4,850 1,232 11,929 18,011 1,723,910 1,741,921 1,974 16,186 Consumer loans: Residential mortgage 400 — 1,597 1,997 651,062 653,059 — 1,842 Home equity 761 25 183 969 330,045 331,014 1 191 Other consumer 51 18 15 84 23,176 23,260 — 17 Total consumer loans 1,212 43 1,795 3,050 1,004,283 1,007,333 1 2,050 Total originated loans and leases $ 12,391 $ 2,171 $ 17,227 $ 31,789 $ 5,877,320 $ 5,909,109 $ 2,252 $ 22,768 At December 31, 2018 Past Due Loans and Leases Past Due Greater Than 90 Days and Accruing 31-60 Days 61-90 Days Greater Than 90 Days Total Current Total Loans and Leases Nonaccrual Loans and Leases (1) (In Thousands) Acquired: Commercial real estate loans: Commercial real estate $ — $ 215 $ 9,087 $ 9,302 $ 112,519 $ 121,821 $ 9,018 $ 122 Multi-family mortgage 348 — — 348 47,550 47,898 — — Construction 360 242 — 602 21,560 22,162 — — Total commercial real estate loans 708 457 9,087 10,252 181,629 191,881 9,018 122 Commercial loans and leases: Commercial 124 44 290 458 23,330 23,788 90 200 Equipment financing — — 9 9 3,240 3,249 9 — Total commercial loans and leases 124 44 299 467 26,570 27,037 99 200 Consumer loans: Residential mortgage — 371 2,113 2,484 127,425 129,909 2,113 290 Home equity 191 265 2 458 45,012 45,470 — 717 Other consumer — — — — 110 110 — — Total consumer loans 191 636 2,115 2,942 172,547 175,489 2,113 1,007 Total acquired loans and leases $ 1,023 $ 1,137 $ 11,501 $ 13,661 $ 380,746 $ 394,407 $ 11,230 $ 1,329 Total loans and leases $ 13,414 $ 3,308 $ 28,728 $ 45,450 $ 6,258,066 $ 6,303,516 $ 13,482 $ 24,097 ___________________________________________________________ (1) Loans and leases acquired with deteriorated credit quality are always accruing.
Impaired loans and leases, by loan and leases class	The following tables include the recorded investment and unpaid principal balances of impaired loans and leases with the related allowance amount, if applicable, for the originated and acquired loan and lease portfolios at the dates indicated. Also presented are the average recorded investments in the impaired loans and leases and the related amount of interest recognized during the period that the impaired loans were impaired. At September 30, 2019 At December 31, 2018 Recorded (1) Unpaid Related Recorded Investment (2) Unpaid Related (In Thousands) Originated: With no related allowance recorded: Commercial real estate $ 3,971 $ 3,962 $ — $ 5,569 $ 5,545 $ — Commercial 25,761 25,723 — 30,927 31,053 — Consumer 2,625 2,612 — 2,989 2,978 — Total originated with no related allowance recorded 32,357 32,297 — 39,485 39,576 — With an allowance recorded: Commercial real estate 70 70 8 396 396 5 Commercial 5,421 5,422 1,572 8,224 8,208 2,961 Consumer 1,229 1,226 72 665 664 89 Total originated with an allowance recorded 6,720 6,718 1,652 9,285 9,268 3,055 Total originated impaired loans and leases 39,077 39,015 1,652 48,770 48,844 3,055 Acquired: With no related allowance recorded: Commercial real estate 14,309 14,311 — 9,538 9,538 — Commercial 476 476 — 531 531 — Consumer 3,746 3,746 — 4,772 4,772 — Total acquired with no related allowance recorded 18,531 18,533 — 14,841 14,841 — With an allowance recorded: Consumer 451 451 40 154 154 26 Total acquired with an allowance recorded 451 451 40 154 154 26 Total acquired impaired loans and leases 18,982 18,984 40 14,995 14,995 26 Total impaired loans and leases $ 58,059 $ 57,999 $ 1,692 $ 63,765 $ 63,839 $ 3,081 ___________________________________________________________________________ (1) Includes originated and acquired nonaccrual loans of $20.7 million and $1.0 million , respectively as of September 30, 2019 . (2) Includes originated and acquired nonaccrual loans of $22.7 million and $1.3 million , respectively as of December 31, 2018 . Three Months Ended September 30, 2019 September 30, 2018 Average Interest Average Interest (In Thousands) Originated: With no related allowance recorded: Commercial real estate $ 3,964 $ 15 $ 5,717 $ 19 Commercial 26,826 206 22,938 195 Consumer 2,638 10 2,711 15 Total originated with no related allowance recorded 33,428 231 31,366 229 With an allowance recorded: Commercial real estate 70 1 — — Commercial 5,511 27 9,052 29 Consumer 1,231 13 1,375 3 Total originated with an allowance recorded 6,812 41 10,427 32 Total originated impaired loans and leases 40,240 272 41,793 261 Acquired: With no related allowance recorded: Commercial real estate 14,316 91 9,222 1 Commercial 486 4 1,118 4 Consumer 3,759 12 5,430 15 Total acquired with no related allowance recorded 18,561 107 15,770 20 With an allowance recorded: Consumer 452 5 158 1 Total acquired with an allowance recorded 452 5 158 1 Total acquired impaired loans and leases 19,013 112 15,928 21 Total impaired loans and leases $ 59,253 $ 384 $ 57,721 $ 282 Nine Months Ended September 30, 2019 September 30, 2018 Average Interest Average Interest (In Thousands) Originated: With no related allowance recorded: Commercial real estate $ 5,543 $ 95 $ 6,756 $ 68 Commercial 29,605 759 24,641 682 Consumer 2,669 28 2,692 42 Total originated with no related allowance recorded 37,817 882 34,089 792 With an allowance recorded: Commercial real estate 336 2 — — Commercial 7,482 55 9,261 73 Consumer 852 19 892 5 Total originated with an allowance recorded 8,670 76 10,153 78 Total originated impaired loans and leases 46,487 958 44,242 870 Acquired: With no related allowance recorded: Commercial real estate 10,874 94 9,975 3 Commercial 535 8 1,438 12 Consumer 4,548 27 5,133 45 Total acquired with no related allowance recorded 15,957 129 16,546 60 With an allowance recorded: Consumer 253 6 128 3 Total acquired with an allowance recorded 253 6 128 3 Total acquired impaired loans and leases 16,210 135 16,674 63 Total impaired loans and leases $ 62,697 $ 1,093 $ 60,916 $ 933
Schedule of the impaired and non-impaired loans and leases, by loan and leases class	The following tables present information regarding impaired and non-impaired loans and leases at the dates indicated: At September 30, 2019 Commercial Real Estate Commercial Consumer Total (In Thousands) Allowance for Loan and Lease Losses: Originated: Individually evaluated for impairment $ 8 $ 1,572 $ 72 $ 1,652 Collectively evaluated for impairment 27,507 22,439 5,582 55,528 Total originated loans and leases 27,515 24,011 5,654 57,180 Acquired: Individually evaluated for impairment — — 40 40 Collectively evaluated for impairment 63 276 16 355 Acquired with deteriorated credit quality 1,451 106 3 1,560 Total acquired loans and leases 1,514 382 59 1,955 Total allowance for loan and lease losses $ 29,029 $ 24,393 $ 5,713 $ 59,135 Loans and Leases: Originated: Individually evaluated for impairment $ 3,811 $ 23,124 $ 3,743 $ 30,678 Collectively evaluated for impairment 3,442,676 1,805,830 1,056,892 6,305,398 Total originated loans and leases 3,446,487 1,828,954 1,060,635 6,336,076 Acquired: Individually evaluated for impairment 4,870 405 1,869 7,144 Collectively evaluated for impairment 80,889 19,035 118,143 218,067 Acquired with deteriorated credit quality 57,205 1,994 26,335 85,534 Total acquired loans and leases 142,964 21,434 146,347 310,745 Total loans and leases $ 3,589,451 $ 1,850,388 $ 1,206,982 $ 6,646,821 At December 31, 2018 Commercial Real Estate Commercial Consumer Total (In Thousands) Allowance for Loan and Lease Losses: Originated: Individually evaluated for impairment $ 5 $ 2,961 $ 89 $ 3,055 Collectively evaluated for impairment 26,617 22,131 5,075 53,823 Total originated loans and leases 26,622 25,092 5,164 56,878 Acquired: Individually evaluated for impairment — — 26 26 Collectively evaluated for impairment 32 83 20 135 Acquired with deteriorated credit quality 1,533 108 12 1,653 Total acquired loans and leases 1,565 191 58 1,814 Total allowance for loan and lease losses $ 28,187 $ 25,283 $ 5,222 $ 58,692 Loans and Leases: Originated: Individually evaluated for impairment $ 5,610 $ 32,127 $ 3,502 $ 41,239 Collectively evaluated for impairment 3,154,245 1,709,794 1,003,831 5,867,870 Total originated loans and leases 3,159,855 1,741,921 1,007,333 5,909,109 Acquired: Individually evaluated for impairment — 404 2,072 2,476 Collectively evaluated for impairment 121,119 24,094 142,194 287,407 Acquired with deteriorated credit quality 70,762 2,539 31,223 104,524 Total acquired loans and leases 191,881 27,037 175,489 394,407 Total loans and leases $ 3,351,736 $ 1,768,958 $ 1,182,822 $ 6,303,516
Summary of loans restructured or defaulted	The recorded investment in TDR loans and the associated specific allowances for loan and lease losses, in the originated and acquired loan and lease portfolios, that were modified during the periods indicated, are as follows. At and for the Three Months Ended September 30, 2019 Recorded Investment Specific Allowance for Loan and Lease Losses Defaulted (1) Number of Loans/ Leases At Modification At End of Period Nonaccrual Loans and Leases Number of Loans/ Leases Recorded Investment (Dollars in Thousands) Originated: Commercial — $ — $ — $ — $ — 1 $ 367 Equipment financing 2 1,405 1,399 30 49 1 155 Residential mortgage 3 869 866 29 343 — — Home equity 2 251 252 2 — — — Total originated 7 $ 2,525 $ 2,517 $ 61 $ 392 2 $ 522 Acquired: Construction 1 4,870 4,870 $ — Residential mortgage 1 297 297 12 — — — Total acquired 2 5,167 5,167 12 — — — Total loans and leases 9 $ 7,692 $ 7,684 $ 73 $ 392 2 $ 522 ______________________________________________________________________ (1) Includes loans and leases that have been modified within the past twelve months and subsequently had payment defaults during the period indicated. At and for the Three Months Ended September 30, 2018 Recorded Investment Specific Allowance for Loan and Lease Losses Defaulted (1) Number of Loans/ Leases At Modification At End of Period Nonaccrual Loans and Leases Number of Loans/ Leases Recorded Investment (Dollars in Thousands) Originated: Commercial 1 $ 137 $ 136 $ 102 $ 136 $ 2 $ 1,086 Residential mortgage 1 209 209 12 — — — Total originated 2 $ 346 $ 345 $ 114 $ 136 2 $ 1,086 Total loans and leases 2 $ 346 $ 345 $ 114 $ 136 2 $ 1,086 ______________________________________________________________________ (1) Includes loans and leases that have been modified within the past twelve months and subsequently had payment defaults during the period indicated. At and for the Nine Months Ended September 30, 2019 Recorded Investment Specific Allowance for Loan and Lease Losses Defaulted (1) Number of Loans/ Leases At Modification At End of Period Nonaccrual Loans and Leases Additional Commitment Number of Loans/ Leases Recorded Investment (Dollars in Thousands) Originated: Commercial real estate 1 $ 73 $ 70 $ 8 $ — $ — $ — $ — Commercial 3 6,793 7,146 — — 766 1 367 Equipment financing 7 2,775 2,458 376 1,056 — — — Residential mortgage 3 869 866 29 343 — — — Home equity 2 251 252 2 — — — — Total originated 16 $ 10,761 $ 10,792 $ 415 $ 1,399 766 1 $ 367 Acquired: Construction 1 4,870 4,870 $ — — — — — Residential mortgage 1 297 297 12 — — — — Total acquired 2 5,167 5,167 12 — — — — Total loans and leases 18 $ 15,928 $ 15,959 $ 427 $ 1,399 $ 766 1 $ 367 ______________________________________________________________________ (1) Includes loans and leases that have been modified within the past twelve months and subsequently had payment defaults during the period indicated. At and for the Nine Months Ended September 30, 2018 Recorded Investment Specific Allowance for Loan and Lease Losses Defaulted (1) Number of Loans/ Leases At Modification At End of Period Nonaccrual Loans and Leases Additional Commitment Number of Loans/ Leases Recorded Investment (Dollars in Thousands) Originated: Commercial real estate 1 $ 673 $ 653 $ — $ 653 — — $ — Commercial 10 1,911 1,867 856 1,867 — 2 1,086 Equipment financing 11 2,271 2,021 29 199 — — — Residential mortgage 1 209 209 12 — — — — Home equity 1 86 84 — — — — — Total originated 24 5,150 4,834 897 2,719 — 2 1,086 Acquired: Home equity 1 125 123 — 123 — — — Total acquired 1 125 123 — 123 — — — Total loans and leases 25 $ 5,275 $ 4,957 $ 897 $ 2,842 — 2 $ 1,086 ______________________________________________________________________ (1) Includes loans and leases that have been modified within the past twelve months and subsequently had payment defaults during the period indicated.
Schedule of troubled debt restructurings by type of modification	The following table sets forth the Company's end-of-period balances for TDRs that were modified during the periods indicated, by type of modification. Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (In Thousands) Loans with one modification: Extended maturity $ 4,919 $ — $ 12,098 $ 1,419 Adjusted interest rate 252 — 252 — Combination maturity, principal, interest rate 2,513 345 3,609 3,454 Total loans with one modification 7,684 345 15,959 4,873 Loans with more than one modification: Combination maturity, principal, interest rate — — — 84 Total loans with more than one modification — — — 84 Total loans with modifications $ 7,684 $ 345 $ 15,959 $ 4,957

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of goodwill and other intangible assets	The following table sets forth the carrying value of goodwill and other intangible assets at the dates indicated: At September 30, 2019 At December 31, 2018 (In Thousands) Goodwill (beginning) $ 160,427 $ 137,890 Additions — 22,537 Balance at end of period 160,427 160,427 Other intangible assets: Core deposits 3,754 4,997 Trade name 1,089 1,089 Total other intangible assets 4,843 6,086 Total goodwill and other intangible assets $ 165,270 $ 166,513
Schedule of estimated aggregate future amortization expense for intangible assets	The estimated aggregate future amortization expense (in thousands) for other intangible assets for each of the next five years and thereafter is as follows: Remainder of 2019 $ 456 Year ending: 2020 1,261 2021 850 2022 494 2023 263 2024 153 Thereafter 277 Total $ 3,754

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Schedule of changes in accumulated other comprehensive (loss) income by component, net of tax	Changes in accumulated other comprehensive income (loss) by component, net of tax, were as follows for the periods indicated: Three Months Ended September 30, 2019 Investment Securities Available-for-Sale Postretirement Benefits Accumulated Other Comprehensive Loss (In Thousands) Balance at June 30, 2019 $ 889 $ 252 $ 1,141 Other comprehensive income (loss) 1,634 — 1,634 Balance at September 30, 2019 $ 2,523 $ 252 $ 2,775 Three Months Ended September 30, 2018 Investment Securities Available-for-Sale Postretirement Benefits Accumulated Other Comprehensive Loss (In Thousands) Balance at June 30, 2018 $ (13,578 ) $ 163 $ (13,415 ) Other comprehensive income (loss) (2,184 ) — (2,184 ) Balance at September 30, 2018 $ (15,762 ) $ 163 $ (15,599 ) Nine Months Ended September 30, 2019 Investment Securities Available-for-Sale Postretirement Benefits Accumulated Other Comprehensive Loss (In Thousands) Balance at December 31, 2018 $ (9,712 ) $ 252 $ (9,460 ) Other comprehensive (loss) income 12,235 — 12,235 Balance at September 30, 2019 $ 2,523 $ 252 $ 2,775 Nine Months Ended September 30, 2018 Investment Securities Available-for-Sale Postretirement Benefits Accumulated Other Comprehensive Loss (In Thousands) Balance at December 31, 2017 $ (6,113 ) $ 163 $ (5,950 ) Other comprehensive loss before reclassifications (9,702 ) — (9,702 ) Less: amounts reclassified from accumulated other comprehensive loss (53 ) — (53 ) Balance at September 30, 2018 $ (15,762 ) $ 163 $ (15,599 )

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of fair value and classification of derivative financial instruments on the consolidated balance sheets and the effect of the derivative financial instruments on the consolidated income statements	The following tables presents the Company's customer related derivative positions for the periods indicated below for those derivatives not designated as hedging. Notional Amount Maturing Number of Positions Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value September 30, 2019 (Dollars In Thousands) Loan level derivatives Receive fixed, pay variable 110 $ — $ 25,196 $ 8,896 $ 34,322 $ 924,062 $ 992,476 $ 79,661 Pay fixed, receive variable 110 — 25,196 8,896 34,322 924,062 992,476 79,661 Risk participation-out agreements 35 — 14,203 — — 162,952 177,155 1,555 Risk participation-in agreements 7 — — — — 56,096 56,096 385 Foreign exchange contracts Buys foreign currency, sells U.S. currency 18 $ 1,315 $ — $ — $ — $ — $ 1,315 $ 22 Sells foreign currency, buys U.S. currency 20 1,420 — — — — 1,420 16 Notional Amount Maturing Number of Positions Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value December 31, 2018 (Dollars In Thousands) Loan level derivatives Receive fixed, pay variable 86 $ 1,931 $ 26,419 $ — $ 31,762 $ 654,388 $ 714,500 $ 6,081 Pay fixed, receive variable 86 1,931 26,419 — 31,762 654,388 714,500 6,081 Risk participation-out agreements 26 — 14,892 — — 85,639 100,531 344 Risk participation-in agreements 5 — — — — 35,838 35,838 84 Foreign exchange contracts Buys foreign currency, sells U.S. currency 22 $ 6,573 $ — $ — $ — $ — $ 6,573 $ 123 Sells foreign currency, buys U.S. currency 37 6,582 — — — — 6,582 131
Schedule of offsetting derivatives and amounts subject to master netting agreements not offset in the audited consolidated balance sheet	The tables below present the offsetting of derivatives and amounts subject to master netting agreements not offset in the unaudited consolidated balance sheet at the dates indicated. At September 30, 2019 Gross Gross Amounts Statement of Financial Position Net Amounts Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position Net Amount Financial Instruments Pledged Cash Collateral Pledged (In Thousands) Asset derivatives Loan level derivatives $ 79,857 $ — $ 79,857 $ — $ — $ 79,857 Risk participation-out agreements 1,555 — 1,555 — — 1,555 Foreign exchange contracts 22 — 22 — — 22 Total $ 81,434 $ — $ 81,434 $ — $ — $ 81,434 Liability derivatives Loan level derivatives $ 79,857 $ — $ 79,857 $ 52,488 $ 40,870 $ (13,501 ) Risk participation-in agreements 385 — 385 — — 385 Foreign exchange contracts 16 — 16 — — 16 Total $ 80,258 $ — $ 80,258 $ 52,488 $ 40,870 $ (13,100 ) At December 31, 2018 Gross Gross Amounts Statement of Financial Position Net Amounts Presented in the Statement of Financial Position Gross Amounts Not Offset in the Statement of Financial Position Net Amount Financial Instruments Pledged Cash Collateral Pledged (In Thousands) Asset derivatives Loan level derivatives $ 22,013 $ — $ 22,013 $ — $ 50 $ 21,963 Risk participation-out agreements 344 — 344 — — 344 Foreign exchange contracts 131 — 131 — — 131 Total $ 22,488 $ — $ 22,488 $ — $ 50 $ 22,438 Liability derivatives Loan level derivatives $ 22,013 $ — $ 22,013 $ 5,877 $ — $ 16,136 Risk participation-in agreements 84 — 84 — — 84 Foreign exchange contracts 123 — 123 — — 123 Total $ 22,220 $ — $ 22,220 $ 5,877 $ — $ 16,343

Earnings per Share ("EPS") (Tab

Earnings per Share ("EPS") (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Reconciliation of basic EPS and diluted EPS	The following table is a reconciliation of basic EPS and diluted EPS: Three Months Ended September 30, 2019 September 30, 2018 Basic Fully Diluted Basic Fully Diluted (Dollars in Thousands, Except Per Share Amounts) Numerator: Net income $ 22,596 $ 22,596 $ 22,460 $ 22,460 Denominator: Weighted average shares outstanding 79,700,403 79,700,403 80,315,050 80,315,050 Effect of dilutive securities — 183,107 — 200,417 Adjusted weighted average shares outstanding 79,700,403 79,883,510 80,315,050 80,515,467 EPS $ 0.28 $ 0.28 $ 0.28 $ 0.28 Nine Months Ended September 30, 2019 September 30, 2018 Basic Fully Diluted Basic Fully Diluted (Dollars in Thousands, Except Per Share Amounts) Numerator: Net income $ 65,534 $ 65,534 $ 61,924 $ 61,924 Denominator: Weighted average shares outstanding 79,676,456 79,676,456 79,471,238 79,471,238 Effect of dilutive securities — 191,227 — 269,754 Adjusted weighted average shares outstanding 79,676,456 79,867,683 79,471,238 79,740,992 EPS $ 0.82 $ 0.82 $ 0.78 $ 0.78

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2019
Fair value of assets and liabilities
Schedule of quantitative information about significant unobservable inputs (Level 3) for assets measured at fair value on a recurring basis	The table below presents quantitative information about significant unobservable inputs (Level 3) for assets measured at fair value on a non-recurring basis at the dates indicated. Fair Value Valuation Technique At September 30, At December 31, 2018 (Dollars in Thousands) Auction-rate municipal obligations $ — $ — Discounted cash flow Collateral-dependent impaired loans and leases $ 2,329 $ 4,203 Appraisal of collateral (1) Other real estate owned 201 3,054 Appraisal of collateral (1) _______________________________________________________________________________ (1) Fair value is generally determined through independent appraisals of the underlying collateral. The Company may also use another available source of collateral assessment to determine a reasonable estimate of the fair value of the collateral. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of the unobservable inputs used may vary but is generally 0% - 10% on the discount for costs to sell and 0% - 15% on appraisal adjustments.
Summary of the carrying values and estimated fair values	The following table presents the carrying amount, estimated fair value, and placement in the fair value hierarchy of the Company's financial instruments at the dates indicated. This table excludes financial instruments for which the carrying amount approximates fair value. Financial assets for which the fair value approximates carrying value include cash and cash equivalents, restricted equity securities, and accrued interest receivable. Financial liabilities for which the fair value approximates carrying value include non-maturity deposits, short-term borrowings, and accrued interest payable. Fair Value Measurements at September 30, 2019 Carrying Estimated Level 1 Level 2 Level 3 (In Thousands) Financial assets: Investment securities held-to-maturity: GSE debentures $ 38,624 $ 38,734 $ — $ 38,734 $ — GSE MBSs 9,937 9,835 — 9,835 — Municipal obligations 46,102 46,763 — 46,763 — Foreign government obligations 500 470 — — 470 Loans and leases, net 6,587,686 6,627,148 — — 6,627,148 Restricted equity securities 57,896 57,896 — — 57,896 Financial liabilities: Certificates of deposits 2,011,622 2,016,106 — 2,016,106 — Borrowed funds 986,405 990,173 — 990,173 — Fair Value Measurements at December 31, 2018 Carrying Estimated Level 1 Level 2 Level 3 (In Thousands) Financial assets: Investment securities held-to-maturity: GSE debentures $ 50,546 $ 49,601 $ — $ 49,601 $ — GSE MBSs 11,426 11,131 — 11,131 — Municipal obligations 52,304 51,598 — 51,598 — Foreign government obligations 500 500 — — 500 Loans held-for-sale 3,247 3,247 — 3,247 — Loans and leases, net 6,244,824 6,154,704 — — 6,154,704 Restricted equity securities 61,751 61,751 — — 61,751 Financial liabilities: Certificates of deposit 1,789,165 1,778,860 — 1,778,860 — Borrowed funds 920,542 886,545 — 886,545 —
Recurring basis
Fair value of assets and liabilities
Schedule of assets and liabilities measured at fair value on a recurring and non-recurring basis	The following tables set forth the carrying value of assets and liabilities measured at fair value on a recurring basis at the dates indicated: Carrying Value as of September 30, 2019 Level 1 Level 2 Level 3 Total (In Thousands) Assets: Investment securities available-for-sale: GSE debentures $ — $ 186,170 $ — $ 186,170 GSE CMOs — 91,851 — 91,851 GSE MBSs — 142,079 — 142,079 SBA commercial loan asset-backed securities — 37 — 37 Corporate debt obligations — 32,981 — 32,981 U.S. Treasury bonds — 14,221 — 14,221 Total investment securities available-for-sale $ — $ 467,339 $ — $ 467,339 Equity securities held-for-trading $ 3,567 $ 1,014 $ — $ 4,581 Loan level derivatives — 79,857 — 79,857 Risk participation-out agreements — 1,555 — 1,555 Foreign exchange contracts — 22 — 22 Liabilities: Loan level derivatives $ — $ 79,857 $ — $ 79,857 Risk participation-in agreements — 385 — 385 Foreign exchange contracts — 16 — 16 Carrying Value as of December 31, 2018 Level 1 Level 2 Level 3 Total (In Thousands) Assets: Investment securities available-for-sale: GSE debentures $ — $ 181,079 $ — $ 181,079 GSE CMOs — 103,130 — 103,130 GSE MBSs — 165,089 — 165,089 SBA commercial loan asset-backed securities — 51 — 51 Corporate debt obligations — 39,708 — 39,708 U.S. Treasury bonds — 13,736 — 13,736 Total investment securities available-for-sale $ — $ 502,793 $ — $ 502,793 Equity securities held-for-trading $ 3,235 $ 972 $ — $ 4,207 Loan level derivatives — 22,013 — 22,013 Risk participation-out agreements — 344 — 344 Foreign exchange contracts — 131 — 131 Liabilities: Loan level derivatives $ — $ 22,013 $ — $ 22,013 Risk participation-in agreements — 84 — 84 Foreign exchange contracts — 123 — 123
Nonrecurring basis
Fair value of assets and liabilities
Schedule of assets and liabilities measured at fair value on a recurring and non-recurring basis	Assets and liabilities measured at fair value on a non-recurring basis are summarized below at the dated indicated: Carrying Value as of September 30, 2019 Level 1 Level 2 Level 3 Total (In Thousands) Assets measured at fair value on a non-recurring basis: Collateral-dependent impaired loans and leases $ — $ — $ 2,330 $ 2,330 OREO — — 201 201 Repossessed assets — 1,931 — 1,931 Total assets measured at fair value on a non-recurring basis $ — $ 1,931 $ 2,531 $ 4,462 Carrying Value as of December 31, 2018 Level 1 Level 2 Level 3 Total (In Thousands) Assets measured at fair value on a non-recurring basis: Collateral-dependent impaired loans and leases $ — $ — $ 4,203 $ 4,203 OREO — — 3,054 3,054 Repossessed assets — 965 — 965 Total assets measured at fair value on a non-recurring basis $ — $ 965 $ 7,257 $ 8,222

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Schedule of financial instruments with off-balance sheet risk	Financial instruments with off-balance-sheet risk at the dates indicated follow: At September 30, 2019 At December 31, 2018 (In Thousands) Financial instruments whose contract amounts represent credit risk: Commitments to originate loans and leases: Commercial real estate $ 75,280 $ 76,642 Commercial 77,395 75,713 Residential mortgage 63,229 16,363 Unadvanced portion of loans and leases 795,285 707,997 Unused lines of credit: Home equity 515,589 487,476 Other consumer 35,923 50,404 Other commercial 393 347 Unused letters of credit: Financial standby letters of credit 10,521 11,491 Performance standby letters of credit 3,696 3,075 Commercial and similar letters of credit 4,648 4,573 Loan level derivatives (Notional principal amounts): Receive fixed, pay variable 992,476 714,500 Pay fixed, receive variable 992,476 714,500 Risk participation-out agreements 177,155 100,531 Risk participation-in agreements 56,096 35,838 Foreign exchange contracts (Notional amounts): Buys foreign currency, sells U.S. currency 1,315 6,573 Sells foreign currency, buys U.S. currency 1,420 6,582
Schedule of Lease Cost, Supplemental Cash Flow and Supplemental Balance Sheet Information	At September 30, 2019 (In Thousands) The components of lease expense were as follow: Operating lease cost $ 4,644 Supplemental cash flow information related to leases was as follows: Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 4,658 Right-of-use assets obtained in exchange for new lease obligations: Operating leases $ 72 Supplemental balance sheet information related to leases was as follows: Operating Leases Operating lease right-of-use assets $ 26,216 Operating lease liabilities 26,216 Weighted Average Remaining Lease Term Operating leases 7.6 years Weighted Average Discount Rate Operating leases 3.2 %
Maturities of Operating Leases	A summary of future minimum rental payments under such leases at the dates indicated follows: Minimum Rental Payments September 30, 2019 December 31, 2018 (In Thousands) Remainder of 2019 $ 1,553 $ 4,224 Year ending: 2020 5,883 4,932 2021 5,263 4,418 2022 4,575 3,602 2023 3,672 2,734 2024 2,305 1,866 Thereafter 6,163 6,637 Total $ 29,414 $ 28,413 Less imputed interest (3,198 ) Present value of lease liability $ 26,216

Basis of Presentation (Details)

Basis of Presentation (Details) $ in Millions	Jan. 04, 2019USD ($)	Sep. 30, 2019bankoffice	Dec. 31, 2018
Basis of Presentation
Number of full-service banking offices		25
Number of lending offices | office		2
BankRI
Basis of Presentation
Number of full-service banking offices		20
First Ipswich Bancorp
Basis of Presentation
Number of full-service banking offices		6
Brookline Bank
Basis of Presentation
Ownership percentage by noncontrolling owners			84.07%
Brookline Bank
Basis of Presentation
Percentage of voting interest acquired	15.93%
Payments to acquired additional interest in subsidiaries | $	$ 35.9

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Details)	Sep. 30, 2019
Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Zero-loss securities as a percentage of investment portfolio	85.00%

Investment Securities (Summary

Investment Securities (Summary of Available-for-sale and Held-to-maturity Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 464,100	$ 515,250
Gross Unrealized Gains	4,867	305
Gross Unrealized Losses	1,628	12,762
Estimated Fair Value	467,339	502,793
Investment securities held-to-maturity
Amortized Cost	95,163	114,776
Gross Unrealized Gains	792	32
Gross Unrealized Losses	153	1,978
Estimated Fair Value	95,802	112,830
Equity securities held-for-trading
Estimated Fair Value	4,581	4,207
GSE debentures
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	182,966	184,072
Gross Unrealized Gains	3,240	99
Gross Unrealized Losses	36	3,092
Estimated Fair Value	186,170	181,079
Investment securities held-to-maturity
Amortized Cost	38,624	50,546
Gross Unrealized Gains	129	22
Gross Unrealized Losses	19	967
Estimated Fair Value	38,734	49,601
GSE CMOs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	92,883	107,363
Gross Unrealized Gains	47	17
Gross Unrealized Losses	1,079	4,250
Estimated Fair Value	91,851	103,130
GSE MBSs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	141,853	169,334
Gross Unrealized Gains	739	124
Gross Unrealized Losses	513	4,369
Estimated Fair Value	142,079	165,089
Investment securities held-to-maturity
Amortized Cost	9,937	11,426
Gross Unrealized Gains	0	0
Gross Unrealized Losses	102	295
Estimated Fair Value	9,835	11,131
SBA commercial loan asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	37	51
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	37	51
Corporate debt obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	32,519	40,618
Gross Unrealized Gains	462	0
Gross Unrealized Losses	0	910
Estimated Fair Value	32,981	39,708
U.S. Treasury bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	13,842	13,812
Gross Unrealized Gains	379	65
Gross Unrealized Losses	0	141
Estimated Fair Value	14,221	13,736
Municipal obligations
Investment securities held-to-maturity
Amortized Cost	46,102	52,304
Gross Unrealized Gains	663	10
Gross Unrealized Losses	2	716
Estimated Fair Value	46,763	51,598
Foreign government obligations
Investment securities held-to-maturity
Amortized Cost	500	500
Gross Unrealized Gains	0	0
Gross Unrealized Losses	30	0
Estimated Fair Value	$ 470	$ 500

Investment Securities (Narrativ

Investment Securities (Narrative) (Details)	Mar. 06, 2018USD ($)shares	Mar. 31, 2018USD ($)shares	Sep. 30, 2019USD ($)security	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)security	Feb. 03, 2017$ / sharesshares
Investment Securities
Investment securities available-for-sale			$ 467,339,000		$ 502,793,000
Debt securities, available-for-sale, accumulated gross unrealized gain (loss)			3,200,000		(12,500,000)
Debt securities, available-for-sale, unrealized loss position			$ 169,710,000		$ 466,671,000
Percentage of securities in unrealized loss positions, available-for-sale securities			36.30%		92.80%
Debt securities, available-for-sale, unrealized loss position, accumulated loss			$ 1,628,000		$ 12,762,000
Investment securities held to maturity, fair value			95,802,000		112,830,000
Net unrealized gain (loss), held-to-maturity securities			600,000		(1,900,000)
Fair value			$ 19,933,000		$ 102,104,000
Percentage of securities in unrealized loss positions, held-to-maturity securities			20.80%		90.50%
Gross unrealized losses			$ 153,000		$ 1,978,000
Equity securities held-for-trading			4,581,000		$ 4,207,000
Purchases of securities available-for-sale			$ 0	$ 73,852,000
Number of equity securities, trading | security			3		3
Purchases of investment securities held-to-maturity			$ 500,000	8,915,000
Estimated fair value of debt securities have right to call or prepay the obligations			45,000,000		$ 19,100,000
Estimated fair value of debt securities have right to call or prepay the obligations, scheduled maturities within one year			3,000,000		0
Estimated fair value of debt securities have right to call or prepay the obligations, scheduled maturities of after one year through five years			41,500,000		8,400,000
Estimated fair value of debt securities have right to call or prepay the obligations, scheduled maturities after five years through ten years			600,000		10,700,000
Estimated fair value of debt securities have right to call or prepay the obligations, scheduled maturities of which is after 10 years			0		0
Sales of trust preferred, marketable and restricted equity securities			0	2,700,000
US Government Sponsored Enterprises Debt Securities Excluding Specified Securities
Investment Securities
Investment securities available-for-sale			18,300,000		20,600,000
GSE debentures
Investment Securities
Investment securities available-for-sale			186,170,000		181,079,000
Investment securities held to maturity, fair value			38,734,000		49,601,000
Net unrealized gain (loss), held-to-maturity securities			100,000		(900,000)
Fair value			38,700,000		49,600,000
Gross unrealized losses			19,000		967,000
Investment securities available-for-sale			$ 186,200,000		$ 181,100,000
AFS number of positions | security			60		60
AFS accumulated gross unrealized gain (loss)			$ 3,200,000		$ (3,000,000)
Number of securities in unrealized loss positions | security			6		51
Purchases of securities available-for-sale			$ 0	33,900,000
Number of securities | security			13		17
Number of securities in an unrealized loss position | security			2		14
Purchases of investment securities held-to-maturity			$ 0	8,900,000
GSE CMOs
Investment Securities
Investment securities available-for-sale			$ 91,900,000		$ 103,100,000
AFS number of positions | security			61		61
AFS accumulated gross unrealized gain (loss)			$ (1,000,000)		$ (4,200,000)
Number of securities in unrealized loss positions | security			41		46
Purchases of securities available-for-sale			$ 0	0
GSE mortgage-related securities
Investment Securities
Investment securities available-for-sale			$ 142,100,000		$ 165,100,000
AFS number of positions | security			151		165
AFS accumulated gross unrealized gain (loss)			$ 200,000		$ (4,200,000)
Number of securities in unrealized loss positions | security			49		93
Purchases of securities available-for-sale			$ 0	15,200,000
SBA commercial loan asset-backed securities
Investment Securities
Investment securities available-for-sale			37,000		$ 51,000
Investment securities available-for-sale			$ 37,000		$ 51,000
AFS number of positions | security			4		4
Number of securities in unrealized loss positions | security			3		4
Purchases of securities available-for-sale			$ 0	0
Corporate debt obligations
Investment Securities
Investment securities available-for-sale			32,981,000		$ 39,708,000
Investment securities available-for-sale			$ 33,000,000		$ 39,700,000
AFS number of positions | security			9		11
AFS accumulated gross unrealized gain (loss)			$ 500,000		$ (900,000)
Number of securities in unrealized loss positions | security			0		11
Purchases of securities available-for-sale			$ 0	0
U.S. Treasury bonds
Investment Securities
Investment securities available-for-sale			$ 14,200,000		$ 13,700,000
AFS number of positions | security			3		7
AFS accumulated gross unrealized gain (loss)			$ 400,000		$ (100,000)
Purchases of securities available-for-sale			24,700,000	0
GSE MBSs
Investment Securities
Investment securities available-for-sale			142,079,000		165,089,000
Investment securities held to maturity, fair value			9,835,000		11,131,000
Net unrealized gain (loss), held-to-maturity securities			(100,000)		(300,000)
Fair value			9,800,000		11,100,000
Gross unrealized losses			$ 102,000		$ 295,000
Number of securities | security			11		11
Number of securities in an unrealized loss position | security			8		8
Purchases of investment securities held-to-maturity			$ 0	0
Municipal obligations
Investment Securities
Investment securities held to maturity, fair value			46,763,000		$ 51,598,000
Net unrealized gain (loss), held-to-maturity securities			700,000		(700,000)
Fair value			46,800,000		51,600,000
Gross unrealized losses			$ 2,000		$ 716,000
Number of securities | security			88		98
Number of securities in an unrealized loss position | security			9		94
Purchases of investment securities held-to-maturity			$ 0	0
Foreign government obligations
Investment Securities
Investment securities held to maturity, fair value			470,000		$ 500,000
Fair value			500,000		500,000
Gross unrealized losses			$ 30,000		$ 0
Number of securities | security			1		1
Purchases of investment securities held-to-maturity				$ 0
Community Bank Systems, Inc. | Brookline Securities Corp
Investment Securities
Cash received per share at exchange (in dollars per share) | $ / shares						$ 319
Number of acquirer shares received per acquiree shares held at exchange (in shares) | shares						14.876
Daily authorized amount of shares that can be sold (in shares) | shares						5,071
Cash proceeds from settlement	$ 600,000
Shares received in settlement (in shares) | shares	11,303
Shares sold (in shares) | shares	11,303
Gain (loss) on sale of investments	$ 600,000
Northeast Retirement Services | Brookline Securities Corp
Investment Securities
Number of shares held as investment | shares						9,721
Longwood Securities | Brookline Securities Corp
Investment Securities
Shares sold (in shares) | shares		3
Gain (loss) on sale of investments		$ (100,000)
Book value		$ 1,500,000
Collateral Pledged
Investment Securities
Investment securities pledged as collateral			$ 437,800,000		$ 442,500,000

Investment Securities (Other-Th

Investment Securities (Other-Than-Temporary Impairment) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Investment securities available-for-sale
Less than twelve months, estimated fair value	$ 53,840	$ 61,213
Less than twelve months, unrealized losses	282	434
Twelve months or longer, estimated fair value	115,870	405,458
Twelve months or longer, unrealized losses	1,346	12,328
Total, fair value	169,710	466,671
Total, unrealized losses	1,628	12,762
Investment securities held-to-maturity
Less than twelve months, estimated fair value	6,964	14,813
Less than twelve months, unrealized losses	44	107
Twelve months or longer, estimated fair value	12,969	87,291
Twelve months or longer, unrealized losses	109	1,871
Total, estimated fair value	19,933	102,104
Total, unrealized losses	153	1,978
Available-for-sale Securities and Held-to-maturity Securities [Abstract] (Deprecated 2018-01-31)
Less than twelve months, estimated fair value	60,804	76,026
Less than twelve months, unrealized losses	326	541
Twelve months or longer, estimated fair value	128,839	492,749
Twelve months or longer, unrealized losses	1,455	14,199
Total, estimated fair value	189,643	568,775
Total, unrealized losses	1,781	14,740
GSE debentures
Investment securities available-for-sale
Less than twelve months, estimated fair value	5,564	25,780
Less than twelve months, unrealized losses	22	191
Twelve months or longer, estimated fair value	9,777	130,284
Twelve months or longer, unrealized losses	14	2,901
Total, fair value	15,341	156,064
Total, unrealized losses	36	3,092
Investment securities held-to-maturity
Less than twelve months, estimated fair value	2,986	0
Less than twelve months, unrealized losses	12	0
Twelve months or longer, estimated fair value	2,991	40,653
Twelve months or longer, unrealized losses	7	967
Total, estimated fair value	5,977	40,653
Total, unrealized losses	19	967
GSE CMOs
Investment securities available-for-sale
Less than twelve months, estimated fair value	23,489	0
Less than twelve months, unrealized losses	176	0
Twelve months or longer, estimated fair value	61,385	102,630
Twelve months or longer, unrealized losses	903	4,250
Total, fair value	84,874	102,630
Total, unrealized losses	1,079	4,250
GSE MBSs
Investment securities available-for-sale
Less than twelve months, estimated fair value	24,787	21,487
Less than twelve months, unrealized losses	84	113
Twelve months or longer, estimated fair value	44,672	138,051
Twelve months or longer, unrealized losses	429	4,256
Total, fair value	69,459	159,538
Total, unrealized losses	513	4,369
Investment securities held-to-maturity
Less than twelve months, estimated fair value	0	0
Less than twelve months, unrealized losses	0	0
Twelve months or longer, estimated fair value	9,772	11,080
Twelve months or longer, unrealized losses	102	295
Total, estimated fair value	9,772	11,080
Total, unrealized losses	102	295
SBA commercial loan asset-backed securities
Investment securities available-for-sale
Less than twelve months, estimated fair value	0	0
Less than twelve months, unrealized losses	0	0
Twelve months or longer, estimated fair value	36	51
Twelve months or longer, unrealized losses	0	0
Total, fair value	36	51
Total, unrealized losses	0	0
Corporate debt obligations
Investment securities available-for-sale
Less than twelve months, estimated fair value		10,019
Less than twelve months, unrealized losses		93
Twelve months or longer, estimated fair value		29,689
Twelve months or longer, unrealized losses		817
Total, fair value		39,708
Total, unrealized losses		910
U.S. Treasury bonds
Investment securities available-for-sale
Less than twelve months, estimated fair value		3,927
Less than twelve months, unrealized losses		37
Twelve months or longer, estimated fair value		4,753
Twelve months or longer, unrealized losses		104
Total, fair value		8,680
Total, unrealized losses		141
Municipal obligations
Investment securities held-to-maturity
Less than twelve months, estimated fair value	3,508	14,813
Less than twelve months, unrealized losses	2	107
Twelve months or longer, estimated fair value	206	35,058
Twelve months or longer, unrealized losses	0	609
Total, estimated fair value	3,714	49,871
Total, unrealized losses	2	716
Foreign government obligations
Investment securities held-to-maturity
Less than twelve months, estimated fair value	470	0
Less than twelve months, unrealized losses	30	0
Twelve months or longer, estimated fair value	0	500
Twelve months or longer, unrealized losses	0	0
Total, estimated fair value	470	500
Total, unrealized losses	$ 30	$ 0

Investment Securities (Portfoli

Investment Securities (Portfolio Maturities) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Available for Sale, Amortized Cost
Within 1 year	$ 16,804	$ 12,041
After 1 year through 5 years	211,446	195,701
After 5 years through 10 years	70,538	115,665
Over 10 years	165,312	191,843
Amortized Cost	464,100	515,250
Available for Sale, Estimated Fair Value
Within 1 year	16,795	12,007
After 1 year through 5 years	214,683	192,692
After 5 years through 10 years	71,239	112,819
Over 10 years	164,622	185,275
Total	$ 467,339	$ 502,793
Available for Sale, Weighted Average Rate
Within 1 year (as a percent)	1.85%	2.03%
After 1 year through 5 years (as a percent)	2.19%	2.14%
After 5 years through 10 years (as a percent)	2.16%	2.18%
Over 10 years (as a percent)	2.12%	2.17%
Total (as a percent)	2.15%	2.16%
Held-to-Maturity, Amortized Cost
Within 1 year	$ 6,499	$ 7,640
After 1 year through 5 years	68,949	72,735
After 5 years through 10 years	9,840	23,025
Over 10 years	9,875	11,376
Total	95,163	114,776
Held-to-Maturity, Estimated Fair Value
Within 1 year	6,504	7,618
After 1 year through 5 years	69,419	71,492
After 5 years through 10 years	10,107	22,640
Over 10 years	9,772	11,080
Total	$ 95,802	$ 112,830
Held-to-Maturity, Weighted Average Rate
Within 1 year (as a percent)	1.85%	1.17%
After 1 year through 5 years (as a percent)	1.85%	1.84%
After 5 years through 10 years (as a percent)	1.78%	2.20%
Over 10 years (as a percent)	1.92%	2.13%
Total (as a percent)	1.85%	1.89%

Investment Securities (Security

Investment Securities (Security Sales) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale of trust preferred, marketable and restricted equity securities	$ 0	$ 2,700,000
Sales of trading securities	0	0
Gross gains from securities sales	0	1,230,000
Gross losses from securities sales	0	(68,000)
Gain on sales of securities, net	$ 0	$ 1,162,000

Loans and Leases (Summary of Lo

Loans and Leases (Summary of Loan and Lease Balances and Weighted Average Coupon Rates) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 6,336,076	$ 5,909,109
Originated, Weighted Average Coupon (as a percent)	5.04%	5.13%
Acquired loans	$ 310,745	$ 394,407
Acquired, Weighted Average Coupon (as a percent)	4.74%	4.83%
Total loans and leases	$ 6,646,821	$ 6,303,516
Total, Weighted Average Coupon (as a percent)	5.03%	5.11%
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 2,441,091	$ 2,330,725
Multi-family mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	919,234	847,711
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	229,126	173,300
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	766,883	736,418
Equipment financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,029,280	982,089
Condominium association
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	54,225	50,451
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	792,733	782,968
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	375,257	376,484
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	38,992	23,370
Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 3,446,487	$ 3,159,855
Originated, Weighted Average Coupon (as a percent)	4.51%	4.63%
Acquired loans	$ 142,964	$ 191,881
Acquired, Weighted Average Coupon (as a percent)	4.77%	4.85%
Total loans and leases	$ 3,589,451	$ 3,351,736
Total, Weighted Average Coupon (as a percent)	4.52%	4.64%
Commercial real estate loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 2,343,137	$ 2,208,904
Originated, Weighted Average Coupon (as a percent)	4.49%	4.61%
Acquired loans	$ 97,954	$ 121,821
Acquired, Weighted Average Coupon (as a percent)	4.66%	4.62%
Total loans and leases	$ 2,441,091	$ 2,330,725
Total, Weighted Average Coupon (as a percent)	4.50%	4.61%
Commercial real estate loans | Multi-family mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 882,665	$ 799,813
Originated, Weighted Average Coupon (as a percent)	4.37%	4.51%
Acquired loans	$ 36,569	$ 47,898
Acquired, Weighted Average Coupon (as a percent)	4.60%	4.58%
Total loans and leases	$ 919,234	$ 847,711
Total, Weighted Average Coupon (as a percent)	4.38%	4.51%
Commercial real estate loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 220,685	$ 151,138
Originated, Weighted Average Coupon (as a percent)	5.31%	5.62%
Acquired loans	$ 8,441	$ 22,162
Acquired, Weighted Average Coupon (as a percent)	6.73%	6.74%
Total loans and leases	$ 229,126	$ 173,300
Total, Weighted Average Coupon (as a percent)	5.36%	5.76%
Commercial loans and leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 1,828,954	$ 1,741,921
Originated, Weighted Average Coupon (as a percent)	6.46%	6.44%
Acquired loans	$ 21,434	$ 27,037
Acquired, Weighted Average Coupon (as a percent)	5.21%	5.46%
Total loans and leases	$ 1,850,388	$ 1,768,958
Total, Weighted Average Coupon (as a percent)	6.45%	6.43%
Commercial loans and leases | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 747,968	$ 712,630
Originated, Weighted Average Coupon (as a percent)	4.83%	4.96%
Acquired loans	$ 18,915	$ 23,788
Acquired, Weighted Average Coupon (as a percent)	5.11%	5.39%
Total loans and leases	$ 766,883	$ 736,418
Total, Weighted Average Coupon (as a percent)	4.84%	4.97%
Commercial loans and leases | Equipment financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 1,026,761	$ 978,840
Originated, Weighted Average Coupon (as a percent)	7.73%	7.61%
Acquired loans	$ 2,519	$ 3,249
Acquired, Weighted Average Coupon (as a percent)	5.98%	5.97%
Total loans and leases	$ 1,029,280	$ 982,089
Total, Weighted Average Coupon (as a percent)	7.73%	7.60%
Commercial loans and leases | Condominium association
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 54,225	$ 50,451
Originated, Weighted Average Coupon (as a percent)	4.87%	4.70%
Acquired loans	$ 0	$ 0
Acquired, Weighted Average Coupon (as a percent)	0.00%	0.00%
Total loans and leases	$ 54,225	$ 50,451
Total, Weighted Average Coupon (as a percent)	4.87%	4.70%
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 1,060,635	$ 1,007,333
Originated, Weighted Average Coupon (as a percent)	4.32%	4.44%
Acquired loans	$ 146,347	$ 175,489
Acquired, Weighted Average Coupon (as a percent)	4.65%	4.70%
Total loans and leases	$ 1,206,982	$ 1,182,822
Total, Weighted Average Coupon (as a percent)	4.36%	4.48%
Consumer loans | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 680,631	$ 653,059
Originated, Weighted Average Coupon (as a percent)	4.09%	4.09%
Acquired loans	$ 112,102	$ 129,909
Acquired, Weighted Average Coupon (as a percent)	4.50%	4.45%
Total loans and leases	$ 792,733	$ 782,968
Total, Weighted Average Coupon (as a percent)	4.15%	4.15%
Consumer loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 341,114	$ 331,014
Originated, Weighted Average Coupon (as a percent)	4.73%	5.05%
Acquired loans	$ 34,143	$ 45,470
Acquired, Weighted Average Coupon (as a percent)	5.12%	5.39%
Total loans and leases	$ 375,257	$ 376,484
Total, Weighted Average Coupon (as a percent)	4.77%	5.09%
Consumer loans | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans	$ 38,890	$ 23,260
Originated, Weighted Average Coupon (as a percent)	4.79%	5.55%
Acquired loans	$ 102	$ 110
Acquired, Weighted Average Coupon (as a percent)	17.88%	17.81%
Total loans and leases	$ 38,992	$ 23,370
Total, Weighted Average Coupon (as a percent)	4.83%	5.61%

Loans and Leases (Narrative) (D

Loans and Leases (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Receivables [Abstract]
Unamortized deferred loan origination fees and costs	$ 15.5	$ 15.6
Percentage of loans to aggregate outstanding amount in the greater New York/New Jersey Metropolitan area and northeastern states	27.40%
Percentage of loans to aggregate outstanding amount in Other areas of the United States	72.60%
Loans and leases pledged as collateral	$ 3,000	$ 3,000

Loans and Leases (Accretable Yi

Loans and Leases (Accretable Yield for the Acquired Loan Portfolio) (Details) - Acquired - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Summarized activity in accretable yield for the acquired loan portfolio
Balance at beginning of period	$ 6,852	$ 8,813	$ 7,905	$ 10,522
Accretion	(1,302)	(890)	(3,143)	(3,223)
Reclassification from nonaccretable difference as a result of changes in expected cash flows	806	224	1,594	848
Balance at end of period	$ 6,356	$ 8,147	$ 6,356	$ 8,147

Allowance for Loan and Lease _3

Allowance for Loan and Lease Losses (Summary of Changes in the Allowance for Loan and Lease Losses and Recorded Investments by Portfolio Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Changes in allowance for loan losses
Balance at the beginning of the period	$ 58,635	$ 57,981	$ 58,692	$ 58,592
Charge-offs	(1,190)	(1,227)	(7,144)	(5,624)
Recoveries	824	663	1,595	2,225
Provision for loan and lease losses	866	2,580	5,992	4,804
Balance at the end of the period	59,135	59,997	59,135	59,997
Provisions for credit losses
Total provision for loan and lease losses	866	2,580	5,992	4,804
Unfunded credit commitments	5	137	(11)	24
Total provision for credit losses	871	2,717	5,981	4,828
Commercial Real Estate
Changes in allowance for loan losses
Balance at the beginning of the period	28,668	27,045	28,187	27,112
Charge-offs	0	0	0	(103)
Recoveries	0	0	0	0
Provision for loan and lease losses	361	319	842	355
Balance at the end of the period	29,029	27,364	29,029	27,364
Provisions for credit losses
Total provision for loan and lease losses	361	319	842	355
Commercial
Changes in allowance for loan losses
Balance at the beginning of the period	24,333	26,120	25,283	26,333
Charge-offs	(1,175)	(1,198)	(7,088)	(5,387)
Recoveries	772	619	1,454	1,972
Provision for loan and lease losses	463	2,217	4,744	4,840
Balance at the end of the period	24,393	27,758	24,393	27,758
Provisions for credit losses
Total provision for loan and lease losses	463	2,217	4,744	4,840
Consumer
Changes in allowance for loan losses
Balance at the beginning of the period	5,634	4,816	5,222	5,147
Charge-offs	(15)	(29)	(56)	(134)
Recoveries	52	44	141	253
Provision for loan and lease losses	42	44	406	(391)
Balance at the end of the period	5,713	4,875	5,713	4,875
Provisions for credit losses
Total provision for loan and lease losses	$ 42	$ 44	$ 406	$ (391)

Allowance for Loan and Lease _4

Allowance for Loan and Lease Losses (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)loanclass	Sep. 30, 2018USD ($)loan	Sep. 30, 2019USD ($)loanclass	Sep. 30, 2018USD ($)loan	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unfunded credit commitments liability included in other liabilities	$ 1,800,000		$ 1,800,000		$ 1,900,000
Unfunded credit commitments liability charged off			0	$ 0
Total loans and leases	6,646,821,000		6,646,821,000		6,303,516,000
Related allowance	1,692,000		1,692,000		3,081,000
Specific allowance for loan and lease losses	1,700,000		1,700,000		3,100,000
General allowance for loan and lease losses	57,400,000		57,400,000		55,600,000
Increase (decrease) in total debt restructured loans and leases			7,100,000
Total troubled debt restructurings	27,996,000		27,996,000		20,941,000
Nonaccrual loans and leases	21,628,000		21,628,000		24,097,000
Increase (decrease) in specific portion of the allowance for loan and lease losses			(1,400,000)
Financial impact of modification of performing and nonperforming loans	$ 100,000	$ 35,000	$ 1,900,000	$ 700,000
Number of loans/ leases | loan	9	2	18	25
Recorded investment, at end of period	$ 7,684,000	$ 345,000	$ 15,959,000	$ 4,957,000
TDR loans and leases with more than one modification | loan	0	0	0	1
Commitments to lend funds to debtors owing receivables whose terms had been modified in troubled debt restructurings			$ 1,400,000	$ 0
Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 6,336,076,000		6,336,076,000		5,909,109,000
Related allowance	1,652,000		1,652,000		3,055,000
Total TDRs
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in total debt restructured loans and leases			(2,700,000)
Total troubled debt restructurings	1,000,000		1,000,000		3,700,000
Taxi Medallion Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	10,400,000		10,400,000		13,700,000
Related allowance	1,100,000		1,100,000		2,500,000
Specific allowance for loan and lease losses	600,000		600,000		1,900,000
General allowance for loan and lease losses	500,000		500,000		600,000
Increase (decrease) in total debt restructured loans and leases			(2,500,000)
Nonaccrual loans and leases	1,200,000		1,200,000		3,700,000
Financial impact of modification of performing and nonperforming loans			1,700,000
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	2,441,091,000		2,441,091,000		2,330,725,000
Multi-family mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	919,234,000		919,234,000		847,711,000
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	229,126,000		229,126,000		173,300,000
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	766,883,000		766,883,000		736,418,000
Equipment financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,029,280,000		1,029,280,000		982,089,000
Condominium association
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	54,225,000		54,225,000		50,451,000
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	792,733,000		792,733,000		782,968,000
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	375,257,000		375,257,000		376,484,000
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 38,992,000		$ 38,992,000		23,370,000
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan classes within specific portfolio | class	3		3
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan classes within specific portfolio | class	3		3
Total loans and leases	$ 1,850,388,000		$ 1,850,388,000		1,768,958,000
Commercial loans | Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,828,954,000		1,828,954,000		1,741,921,000
Related allowance	1,572,000		1,572,000		2,961,000
Commercial loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 766,883,000		$ 766,883,000		736,418,000
Percentage of loans to aggregate outstanding amount	11.50%		11.50%
Commercial loans | Equipment financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 1,029,280,000		$ 1,029,280,000		982,089,000
Percentage of loans to aggregate outstanding amount	15.50%		15.50%
Commercial loans | Condominium association
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 54,225,000		$ 54,225,000		50,451,000
Percentage of loans to aggregate outstanding amount	0.80%		0.80%
Consumer Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan classes within specific portfolio | class	3		3
Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan classes within specific portfolio | class	3		3
Total loans and leases	$ 3,589,451,000		$ 3,589,451,000		3,351,736,000
Commercial real estate loans | Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	3,446,487,000		3,446,487,000		3,159,855,000
Related allowance	8,000		8,000		5,000
Commercial real estate loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 2,441,091,000		$ 2,441,091,000		2,330,725,000
Percentage of loans to aggregate outstanding amount	36.70%		36.70%
Commercial real estate loans | Multi-family mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 919,234,000		$ 919,234,000		847,711,000
Percentage of loans to aggregate outstanding amount	13.90%		13.90%
Commercial real estate loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 229,126,000		$ 229,126,000		173,300,000
Percentage of loans to aggregate outstanding amount	3.50%		3.50%
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan classes within specific portfolio | class	3		3
Total loans and leases	$ 1,206,982,000		$ 1,206,982,000		1,182,822,000
Loans not made, loan to value ratio, minimum (as a percent)	80.00%		80.00%
Number of days past due, non-accrual status (in days)			90 days
Consumer loans | Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 1,060,635,000		$ 1,060,635,000		1,007,333,000
Related allowance	72,000		72,000		89,000
Consumer loans | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 792,733,000		$ 792,733,000		782,968,000
Percentage of loans to aggregate outstanding amount	11.90%		11.90%
Consumer loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 375,257,000		$ 375,257,000		376,484,000
Percentage of loans to aggregate outstanding amount	5.60%		5.60%
Consumer loans | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 38,992,000		$ 38,992,000		$ 23,370,000
Percentage of loans to aggregate outstanding amount	0.60%		0.60%
Boston | Taxi Medallion Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral valuation	$ 35,000		$ 35,000
Cambridge | Taxi Medallion Portfolio
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral valuation	$ 10,000		$ 10,000

Allowance for Loan and Lease _5

Allowance for Loan and Lease Losses (Credit Quality Information) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Credit Quality Information
Recorded investment	$ 6,646,821	$ 6,303,516
Originated
Credit Quality Information
Recorded investment	6,336,076	5,909,109
Acquired
Credit Quality Information
Recorded investment	310,745	394,407
Commercial real estate
Credit Quality Information
Recorded investment	2,441,091	2,330,725
Commercial real estate | Originated
Credit Quality Information
Recorded investment	2,343,137	2,208,904
Commercial real estate | Acquired
Credit Quality Information
Recorded investment	97,954	121,821
Commercial real estate | Pass | Originated
Credit Quality Information
Recorded investment	2,336,984	2,198,377
Commercial real estate | Pass | Acquired
Credit Quality Information
Recorded investment	86,854	111,919
Commercial real estate | OAEM | Originated
Credit Quality Information
Recorded investment	2,982	6,096
Commercial real estate | OAEM | Acquired
Credit Quality Information
Recorded investment	2,076	626
Commercial real estate | Substandard | Originated
Credit Quality Information
Recorded investment	3,171	4,431
Commercial real estate | Substandard | Acquired
Credit Quality Information
Recorded investment	9,024	9,276
Commercial real estate | Doubtful | Originated
Credit Quality Information
Recorded investment	0	0
Multi-family mortgage
Credit Quality Information
Recorded investment	919,234	847,711
Multi-family mortgage | Originated
Credit Quality Information
Recorded investment	882,665	799,813
Multi-family mortgage | Acquired
Credit Quality Information
Recorded investment	36,569	47,898
Multi-family mortgage | Pass | Originated
Credit Quality Information
Recorded investment	882,578	799,483
Multi-family mortgage | Pass | Acquired
Credit Quality Information
Recorded investment	36,569	47,715
Multi-family mortgage | OAEM | Originated
Credit Quality Information
Recorded investment	0	0
Multi-family mortgage | OAEM | Acquired
Credit Quality Information
Recorded investment	0	0
Multi-family mortgage | Substandard | Originated
Credit Quality Information
Recorded investment	87	330
Multi-family mortgage | Substandard | Acquired
Credit Quality Information
Recorded investment	0	183
Multi-family mortgage | Doubtful | Originated
Credit Quality Information
Recorded investment	0	0
Construction
Credit Quality Information
Recorded investment	229,126	173,300
Construction | Originated
Credit Quality Information
Recorded investment	220,685	151,138
Construction | Acquired
Credit Quality Information
Recorded investment	8,441	22,162
Construction | Pass | Originated
Credit Quality Information
Recorded investment	220,685	150,742
Construction | Pass | Acquired
Credit Quality Information
Recorded investment	3,571	22,162
Construction | OAEM | Originated
Credit Quality Information
Recorded investment	0	0
Construction | OAEM | Acquired
Credit Quality Information
Recorded investment	4,870	0
Construction | Substandard | Originated
Credit Quality Information
Recorded investment	0	396
Construction | Substandard | Acquired
Credit Quality Information
Recorded investment	0	0
Construction | Doubtful | Originated
Credit Quality Information
Recorded investment	0	0
Commercial
Credit Quality Information
Recorded investment	766,883	736,418
Commercial | Originated
Credit Quality Information
Recorded investment	747,968	712,630
Commercial | Acquired
Credit Quality Information
Recorded investment	18,915	23,788
Commercial | Pass | Originated
Credit Quality Information
Recorded investment	729,682	685,773
Commercial | Pass | Acquired
Credit Quality Information
Recorded investment	18,313	23,250
Commercial | OAEM | Originated
Credit Quality Information
Recorded investment	11,751	3,726
Commercial | OAEM | Acquired
Credit Quality Information
Recorded investment	370	236
Commercial | Substandard | Originated
Credit Quality Information
Recorded investment	6,532	22,870
Commercial | Substandard | Acquired
Credit Quality Information
Recorded investment	232	302
Commercial | Doubtful | Originated
Credit Quality Information
Recorded investment	3	261
Equipment financing
Credit Quality Information
Recorded investment	1,029,280	982,089
Equipment financing | Originated
Credit Quality Information
Recorded investment	1,026,761	978,840
Equipment financing | Acquired
Credit Quality Information
Recorded investment	2,519	3,249
Equipment financing | Pass | Originated
Credit Quality Information
Recorded investment	1,012,405	969,275
Equipment financing | Pass | Acquired
Credit Quality Information
Recorded investment	2,512	3,240
Equipment financing | OAEM | Originated
Credit Quality Information
Recorded investment	1,451	52
Equipment financing | OAEM | Acquired
Credit Quality Information
Recorded investment	0	0
Equipment financing | Substandard | Originated
Credit Quality Information
Recorded investment	11,455	6,895
Equipment financing | Substandard | Acquired
Credit Quality Information
Recorded investment	7	9
Equipment financing | Doubtful | Originated
Credit Quality Information
Recorded investment	1,450	2,618
Condominium association
Credit Quality Information
Recorded investment	54,225	50,451
Condominium association | Originated
Credit Quality Information
Recorded investment	54,225	50,451
Condominium association | Acquired
Credit Quality Information
Recorded investment	0	0
Condominium association | Pass | Originated
Credit Quality Information
Recorded investment	54,062	50,186
Condominium association | Pass | Acquired
Credit Quality Information
Recorded investment	0	0
Condominium association | OAEM | Originated
Credit Quality Information
Recorded investment	0	0
Condominium association | OAEM | Acquired
Credit Quality Information
Recorded investment	0	0
Condominium association | Substandard | Originated
Credit Quality Information
Recorded investment	163	265
Condominium association | Substandard | Acquired
Credit Quality Information
Recorded investment	0	0
Condominium association | Doubtful | Originated
Credit Quality Information
Recorded investment	0	0
Other consumer
Credit Quality Information
Recorded investment	38,992	23,370
Other consumer | Originated
Credit Quality Information
Recorded investment	38,890	23,260
Other consumer | Acquired
Credit Quality Information
Recorded investment	102	110
Other consumer | Pass | Originated
Credit Quality Information
Recorded investment	38,889	23,249
Other consumer | Pass | Acquired
Credit Quality Information
Recorded investment	102	110
Other consumer | OAEM | Originated
Credit Quality Information
Recorded investment	0	0
Other consumer | OAEM | Acquired
Credit Quality Information
Recorded investment	0	0
Other consumer | Substandard | Originated
Credit Quality Information
Recorded investment	1	11
Other consumer | Substandard | Acquired
Credit Quality Information
Recorded investment	0	0
Other consumer | Doubtful | Originated
Credit Quality Information
Recorded investment	0	0
Total
Credit Quality Information
Recorded investment	5,478,831	5,144,064
Total | Originated
Credit Quality Information
Recorded investment	5,314,331	4,925,036
Total | Acquired
Credit Quality Information
Recorded investment	164,500	219,028
Total | Pass | Originated
Credit Quality Information
Recorded investment	5,275,285	4,877,085
Total | Pass | Acquired
Credit Quality Information
Recorded investment	147,921	208,396
Total | OAEM | Originated
Credit Quality Information
Recorded investment	16,184	9,874
Total | OAEM | Acquired
Credit Quality Information
Recorded investment	7,316	862
Total | Substandard | Originated
Credit Quality Information
Recorded investment	21,409	35,198
Total | Substandard | Acquired
Credit Quality Information
Recorded investment	9,263	9,770
Total | Doubtful | Originated
Credit Quality Information
Recorded investment	1,453	2,879
Residential mortgage
Credit Quality Information
Recorded investment	$ 792,733	$ 782,968
Percentage of loans to aggregate outstanding amount	100.00%	100.00%
Residential mortgage | Originated
Credit Quality Information
Recorded investment	$ 680,631	$ 653,059
Percentage of loans to aggregate outstanding amount	85.80%	83.40%
Residential mortgage | Acquired
Credit Quality Information
Recorded investment	$ 112,102	$ 129,909
Percentage of loans to aggregate outstanding amount	14.20%	16.60%
Residential mortgage | Loan-to-value ratio, less than 50% | Originated
Credit Quality Information
Recorded investment	$ 182,444	$ 171,523
Percentage of loans to aggregate outstanding amount	23.00%	21.90%
Residential mortgage | Loan-to-value ratio, less than 50% | Acquired
Credit Quality Information
Recorded investment	$ 34,453	$ 36,752
Percentage of loans to aggregate outstanding amount	4.30%	4.60%
Residential mortgage | Loan-to-value ratio, 50% - 69% | Originated
Credit Quality Information
Recorded investment	$ 285,430	$ 287,337
Percentage of loans to aggregate outstanding amount	36.00%	36.70%
Residential mortgage | Loan-to-value ratio, 50% - 69% | Acquired
Credit Quality Information
Recorded investment	$ 48,522	$ 53,788
Percentage of loans to aggregate outstanding amount	6.30%	6.90%
Residential mortgage | Loan-to-value ratio, 70% - 79% | Originated
Credit Quality Information
Recorded investment	$ 181,726	$ 173,870
Percentage of loans to aggregate outstanding amount	22.90%	22.20%
Residential mortgage | Loan-to-value ratio, 70% - 79% | Acquired
Credit Quality Information
Recorded investment	$ 17,551	$ 26,510
Percentage of loans to aggregate outstanding amount	2.20%	3.40%
Residential mortgage | Loan-to-value ratio, 80% and greater than | Originated
Credit Quality Information
Recorded investment	$ 19,922	$ 19,030
Percentage of loans to aggregate outstanding amount	2.50%	2.40%
Residential mortgage | Loan-to-value ratio, 80% and greater than | Acquired
Credit Quality Information
Recorded investment	$ 5,885	$ 6,701
Percentage of loans to aggregate outstanding amount	0.70%	0.90%
Residential mortgage | Data not available | Originated
Credit Quality Information
Recorded investment	$ 11,109	$ 1,299
Percentage of loans to aggregate outstanding amount	1.40%	0.20%
Residential mortgage | Data not available | Acquired
Credit Quality Information
Recorded investment	$ 5,691	$ 6,158
Percentage of loans to aggregate outstanding amount	0.70%	0.80%
Home equity
Credit Quality Information
Recorded investment	$ 375,257	$ 376,484
Percentage of loans to aggregate outstanding amount	100.00%	100.00%
Home equity | Originated
Credit Quality Information
Recorded investment	$ 341,114	$ 331,014
Percentage of loans to aggregate outstanding amount	90.90%	87.90%
Home equity | Acquired
Credit Quality Information
Recorded investment	$ 34,143	$ 45,470
Percentage of loans to aggregate outstanding amount	9.10%	12.10%
Home equity | Loan-to-value ratio, less than 50% | Originated
Credit Quality Information
Recorded investment	$ 136,072	$ 142,534
Percentage of loans to aggregate outstanding amount	36.30%	37.90%
Home equity | Loan-to-value ratio, less than 50% | Acquired
Credit Quality Information
Recorded investment	$ 18,148	$ 24,705
Percentage of loans to aggregate outstanding amount	4.80%	6.60%
Home equity | Loan-to-value ratio, 50% - 69% | Originated
Credit Quality Information
Recorded investment	$ 90,917	$ 84,423
Percentage of loans to aggregate outstanding amount	24.20%	22.40%
Home equity | Loan-to-value ratio, 50% - 69% | Acquired
Credit Quality Information
Recorded investment	$ 8,727	$ 10,353
Percentage of loans to aggregate outstanding amount	2.30%	2.70%
Home equity | Loan-to-value ratio, 70% - 79% | Originated
Credit Quality Information
Recorded investment	$ 78,552	$ 73,898
Percentage of loans to aggregate outstanding amount	20.90%	19.60%
Home equity | Loan-to-value ratio, 70% - 79% | Acquired
Credit Quality Information
Recorded investment	$ 712	$ 1,000
Percentage of loans to aggregate outstanding amount	0.20%	0.30%
Home equity | Loan-to-value ratio, 80% and greater than | Originated
Credit Quality Information
Recorded investment	$ 35,573	$ 30,129
Percentage of loans to aggregate outstanding amount	9.50%	8.00%
Home equity | Loan-to-value ratio, 80% and greater than | Acquired
Credit Quality Information
Recorded investment	$ 2,559	$ 4,348
Percentage of loans to aggregate outstanding amount	0.70%	1.20%
Home equity | Data not available | Originated
Credit Quality Information
Recorded investment	$ 0	$ 30
Percentage of loans to aggregate outstanding amount	0.00%	0.00%
Home equity | Data not available | Acquired
Credit Quality Information
Recorded investment	$ 3,997	$ 5,064
Percentage of loans to aggregate outstanding amount	1.10%	1.30%

Allowance for Loan and Lease _6

Allowance for Loan and Lease Losses (Foreclosed Residential Real Estate Property) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Receivables [Abstract]
Foreclosed residential real estate property held by the creditor	$ 0	$ 629
Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure	$ 701	$ 121

Allowance for Loan and Lease _7

Allowance for Loan and Lease Losses (Past Due Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Age analysis of past due loans
Past Due	$ 41,104	$ 45,450
Current	6,605,717	6,258,066
Total Loans and Leases	6,646,821	6,303,516
Loans and Leases Past Due Greater Than 90 Days and Accruing	11,885	13,482
Nonaccrual Loans and Leases	21,628	24,097
Commercial real estate
Age analysis of past due loans
Total Loans and Leases	2,441,091	2,330,725
Multi-family mortgage
Age analysis of past due loans
Total Loans and Leases	919,234	847,711
Construction
Age analysis of past due loans
Total Loans and Leases	229,126	173,300
Commercial
Age analysis of past due loans
Total Loans and Leases	766,883	736,418
Equipment financing
Age analysis of past due loans
Total Loans and Leases	1,029,280	982,089
Condominium association
Age analysis of past due loans
Total Loans and Leases	54,225	50,451
Residential mortgage
Age analysis of past due loans
Total Loans and Leases	792,733	782,968
Home equity
Age analysis of past due loans
Total Loans and Leases	375,257	376,484
Other consumer
Age analysis of past due loans
Total Loans and Leases	38,992	23,370
Commercial real estate loans
Age analysis of past due loans
Total Loans and Leases	3,589,451	3,351,736
Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Total Loans and Leases	2,441,091	2,330,725
Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Total Loans and Leases	919,234	847,711
Commercial real estate loans | Construction
Age analysis of past due loans
Total Loans and Leases	229,126	173,300
Commercial loans and leases
Age analysis of past due loans
Total Loans and Leases	1,850,388	1,768,958
Commercial loans and leases | Commercial
Age analysis of past due loans
Total Loans and Leases	766,883	736,418
Commercial loans and leases | Equipment financing
Age analysis of past due loans
Total Loans and Leases	1,029,280	982,089
Commercial loans and leases | Condominium association
Age analysis of past due loans
Total Loans and Leases	54,225	50,451
Consumer loans
Age analysis of past due loans
Total Loans and Leases	1,206,982	1,182,822
Consumer loans | Residential mortgage
Age analysis of past due loans
Total Loans and Leases	792,733	782,968
Consumer loans | Home equity
Age analysis of past due loans
Total Loans and Leases	375,257	376,484
Consumer loans | Other consumer
Age analysis of past due loans
Total Loans and Leases	38,992	23,370
31-60 days past due
Age analysis of past due loans
Past Due	11,003	13,414
61-90 days past due
Age analysis of past due loans
Past Due	4,842	3,308
Greater than 90 days past due
Age analysis of past due loans
Past Due	25,259	28,728
Originated
Age analysis of past due loans
Past Due	27,062	31,789
Current	6,309,014	5,877,320
Total Loans and Leases	6,336,076	5,909,109
Loans and Leases Past Due Greater Than 90 Days and Accruing	1,242	2,252
Nonaccrual Loans and Leases	20,673	22,768
Originated | Commercial real estate
Age analysis of past due loans
Total Loans and Leases	2,343,137	2,208,904
Originated | Multi-family mortgage
Age analysis of past due loans
Total Loans and Leases	882,665	799,813
Originated | Construction
Age analysis of past due loans
Total Loans and Leases	220,685	151,138
Originated | Commercial
Age analysis of past due loans
Total Loans and Leases	747,968	712,630
Originated | Equipment financing
Age analysis of past due loans
Total Loans and Leases	1,026,761	978,840
Originated | Condominium association
Age analysis of past due loans
Total Loans and Leases	54,225	50,451
Originated | Residential mortgage
Age analysis of past due loans
Total Loans and Leases	680,631	653,059
Originated | Home equity
Age analysis of past due loans
Total Loans and Leases	341,114	331,014
Originated | Other consumer
Age analysis of past due loans
Total Loans and Leases	38,890	23,260
Originated | Commercial real estate loans
Age analysis of past due loans
Past Due	6,560	10,728
Current	3,439,927	3,149,127
Total Loans and Leases	3,446,487	3,159,855
Loans and Leases Past Due Greater Than 90 Days and Accruing	0	277
Nonaccrual Loans and Leases	2,898	4,532
Originated | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Past Due	4,697	8,997
Current	2,338,440	2,199,907
Total Loans and Leases	2,343,137	2,208,904
Loans and Leases Past Due Greater Than 90 Days and Accruing	0	277
Nonaccrual Loans and Leases	2,811	3,806
Originated | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Past Due	557	1,038
Current	882,108	798,775
Total Loans and Leases	882,665	799,813
Loans and Leases Past Due Greater Than 90 Days and Accruing	0	0
Nonaccrual Loans and Leases	87	330
Originated | Commercial real estate loans | Construction
Age analysis of past due loans
Past Due	1,306	693
Current	219,379	150,445
Total Loans and Leases	220,685	151,138
Loans and Leases Past Due Greater Than 90 Days and Accruing	0	0
Nonaccrual Loans and Leases	0	396
Originated | Commercial loans and leases
Age analysis of past due loans
Past Due	18,376	18,011
Current	1,810,578	1,723,910
Total Loans and Leases	1,828,954	1,741,921
Loans and Leases Past Due Greater Than 90 Days and Accruing	1,241	1,974
Nonaccrual Loans and Leases	15,913	16,186
Originated | Commercial loans and leases | Commercial
Age analysis of past due loans
Past Due	5,393	8,847
Current	742,575	703,783
Total Loans and Leases	747,968	712,630
Loans and Leases Past Due Greater Than 90 Days and Accruing	1,241	1,962
Nonaccrual Loans and Leases	2,933	6,421
Originated | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Past Due	12,532	8,844
Current	1,014,229	969,996
Total Loans and Leases	1,026,761	978,840
Loans and Leases Past Due Greater Than 90 Days and Accruing	0	12
Nonaccrual Loans and Leases	12,817	9,500
Originated | Commercial loans and leases | Condominium association
Age analysis of past due loans
Past Due	451	320
Current	53,774	50,131
Total Loans and Leases	54,225	50,451
Loans and Leases Past Due Greater Than 90 Days and Accruing	0	0
Nonaccrual Loans and Leases	163	265
Originated | Consumer loans
Age analysis of past due loans
Past Due	2,126	3,050
Current	1,058,509	1,004,283
Total Loans and Leases	1,060,635	1,007,333
Loans and Leases Past Due Greater Than 90 Days and Accruing	1	1
Nonaccrual Loans and Leases	1,862	2,050
Originated | Consumer loans | Residential mortgage
Age analysis of past due loans
Past Due	1,279	1,997
Current	679,352	651,062
Total Loans and Leases	680,631	653,059
Loans and Leases Past Due Greater Than 90 Days and Accruing	0	0
Nonaccrual Loans and Leases	1,605	1,842
Originated | Consumer loans | Home equity
Age analysis of past due loans
Past Due	818	969
Current	340,296	330,045
Total Loans and Leases	341,114	331,014
Loans and Leases Past Due Greater Than 90 Days and Accruing	1	1
Nonaccrual Loans and Leases	254	191
Originated | Consumer loans | Other consumer
Age analysis of past due loans
Past Due	29	84
Current	38,861	23,176
Total Loans and Leases	38,890	23,260
Loans and Leases Past Due Greater Than 90 Days and Accruing	0	0
Nonaccrual Loans and Leases	3	17
Originated | 31-60 days past due
Age analysis of past due loans
Past Due	8,215	12,391
Originated | 31-60 days past due | Commercial real estate loans
Age analysis of past due loans
Past Due	2,714	6,329
Originated | 31-60 days past due | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Past Due	2,157	5,139
Originated | 31-60 days past due | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Past Due	557	893
Originated | 31-60 days past due | Commercial real estate loans | Construction
Age analysis of past due loans
Past Due	0	297
Originated | 31-60 days past due | Commercial loans and leases
Age analysis of past due loans
Past Due	4,290	4,850
Originated | 31-60 days past due | Commercial loans and leases | Commercial
Age analysis of past due loans
Past Due	731	2,021
Originated | 31-60 days past due | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Past Due	3,108	2,509
Originated | 31-60 days past due | Commercial loans and leases | Condominium association
Age analysis of past due loans
Past Due	451	320
Originated | 31-60 days past due | Consumer loans
Age analysis of past due loans
Past Due	1,211	1,212
Originated | 31-60 days past due | Consumer loans | Residential mortgage
Age analysis of past due loans
Past Due	685	400
Originated | 31-60 days past due | Consumer loans | Home equity
Age analysis of past due loans
Past Due	504	761
Originated | 31-60 days past due | Consumer loans | Other consumer
Age analysis of past due loans
Past Due	22	51
Originated | 61-90 days past due
Age analysis of past due loans
Past Due	4,509	2,171
Originated | 61-90 days past due | Commercial real estate loans
Age analysis of past due loans
Past Due	1,306	896
Originated | 61-90 days past due | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Past Due	0	896
Originated | 61-90 days past due | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Past Due	0	0
Originated | 61-90 days past due | Commercial real estate loans | Construction
Age analysis of past due loans
Past Due	1,306	0
Originated | 61-90 days past due | Commercial loans and leases
Age analysis of past due loans
Past Due	2,997	1,232
Originated | 61-90 days past due | Commercial loans and leases | Commercial
Age analysis of past due loans
Past Due	1,314	582
Originated | 61-90 days past due | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Past Due	1,683	650
Originated | 61-90 days past due | Commercial loans and leases | Condominium association
Age analysis of past due loans
Past Due	0	0
Originated | 61-90 days past due | Consumer loans
Age analysis of past due loans
Past Due	206	43
Originated | 61-90 days past due | Consumer loans | Residential mortgage
Age analysis of past due loans
Past Due	0	0
Originated | 61-90 days past due | Consumer loans | Home equity
Age analysis of past due loans
Past Due	201	25
Originated | 61-90 days past due | Consumer loans | Other consumer
Age analysis of past due loans
Past Due	5	18
Originated | Greater than 90 days past due
Age analysis of past due loans
Past Due	14,338	17,227
Originated | Greater than 90 days past due | Commercial real estate loans
Age analysis of past due loans
Past Due	2,540	3,503
Originated | Greater than 90 days past due | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Past Due	2,540	2,962
Originated | Greater than 90 days past due | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Past Due	0	145
Originated | Greater than 90 days past due | Commercial real estate loans | Construction
Age analysis of past due loans
Past Due	0	396
Originated | Greater than 90 days past due | Commercial loans and leases
Age analysis of past due loans
Past Due	11,089	11,929
Originated | Greater than 90 days past due | Commercial loans and leases | Commercial
Age analysis of past due loans
Past Due	3,348	6,244
Originated | Greater than 90 days past due | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Past Due	7,741	5,685
Originated | Greater than 90 days past due | Commercial loans and leases | Condominium association
Age analysis of past due loans
Past Due	0	0
Originated | Greater than 90 days past due | Consumer loans
Age analysis of past due loans
Past Due	709	1,795
Originated | Greater than 90 days past due | Consumer loans | Residential mortgage
Age analysis of past due loans
Past Due	594	1,597
Originated | Greater than 90 days past due | Consumer loans | Home equity
Age analysis of past due loans
Past Due	113	183
Originated | Greater than 90 days past due | Consumer loans | Other consumer
Age analysis of past due loans
Past Due	2	15
Acquired
Age analysis of past due loans
Past Due	14,042	13,661
Current	296,703	380,746
Total Loans and Leases	310,745	394,407
Loans and Leases Past Due Greater Than 90 Days and Accruing	10,643	11,230
Nonaccrual Loans and Leases	955	1,329
Acquired | Commercial real estate
Age analysis of past due loans
Total Loans and Leases	97,954	121,821
Acquired | Multi-family mortgage
Age analysis of past due loans
Total Loans and Leases	36,569	47,898
Acquired | Construction
Age analysis of past due loans
Total Loans and Leases	8,441	22,162
Acquired | Commercial
Age analysis of past due loans
Total Loans and Leases	18,915	23,788
Acquired | Equipment financing
Age analysis of past due loans
Total Loans and Leases	2,519	3,249
Acquired | Condominium association
Age analysis of past due loans
Total Loans and Leases	0	0
Acquired | Residential mortgage
Age analysis of past due loans
Total Loans and Leases	112,102	129,909
Acquired | Home equity
Age analysis of past due loans
Total Loans and Leases	34,143	45,470
Acquired | Other consumer
Age analysis of past due loans
Total Loans and Leases	102	110
Acquired | Commercial real estate loans
Age analysis of past due loans
Past Due	9,539	10,252
Current	133,425	181,629
Total Loans and Leases	142,964	191,881
Loans and Leases Past Due Greater Than 90 Days and Accruing	8,794	9,018
Nonaccrual Loans and Leases	99	122
Acquired | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Past Due	9,191	9,302
Current	88,763	112,519
Total Loans and Leases	97,954	121,821
Loans and Leases Past Due Greater Than 90 Days and Accruing	8,794	9,018
Nonaccrual Loans and Leases	99	122
Acquired | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Past Due	348	348
Current	36,221	47,550
Total Loans and Leases	36,569	47,898
Loans and Leases Past Due Greater Than 90 Days and Accruing	0	0
Nonaccrual Loans and Leases	0	0
Acquired | Commercial real estate loans | Construction
Age analysis of past due loans
Past Due	0	602
Current	8,441	21,560
Total Loans and Leases	8,441	22,162
Loans and Leases Past Due Greater Than 90 Days and Accruing	0	0
Nonaccrual Loans and Leases	0	0
Acquired | Commercial loans and leases
Age analysis of past due loans
Past Due	239	467
Current	21,195	26,570
Total Loans and Leases	21,434	27,037
Loans and Leases Past Due Greater Than 90 Days and Accruing	33	99
Nonaccrual Loans and Leases	206	200
Acquired | Commercial loans and leases | Commercial
Age analysis of past due loans
Past Due	232	458
Current	18,683	23,330
Total Loans and Leases	18,915	23,788
Loans and Leases Past Due Greater Than 90 Days and Accruing	26	90
Nonaccrual Loans and Leases	206	200
Acquired | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Past Due	7	9
Current	2,512	3,240
Total Loans and Leases	2,519	3,249
Loans and Leases Past Due Greater Than 90 Days and Accruing	7	9
Nonaccrual Loans and Leases	0	0
Acquired | Consumer loans
Age analysis of past due loans
Past Due	4,264	2,942
Current	142,083	172,547
Total Loans and Leases	146,347	175,489
Loans and Leases Past Due Greater Than 90 Days and Accruing	1,816	2,113
Nonaccrual Loans and Leases	650	1,007
Acquired | Consumer loans | Residential mortgage
Age analysis of past due loans
Past Due	3,668	2,484
Current	108,434	127,425
Total Loans and Leases	112,102	129,909
Loans and Leases Past Due Greater Than 90 Days and Accruing	1,776	2,113
Nonaccrual Loans and Leases	0	290
Acquired | Consumer loans | Home equity
Age analysis of past due loans
Past Due	596	458
Current	33,547	45,012
Total Loans and Leases	34,143	45,470
Loans and Leases Past Due Greater Than 90 Days and Accruing	40	0
Nonaccrual Loans and Leases	650	717
Acquired | Consumer loans | Other consumer
Age analysis of past due loans
Past Due	0	0
Current	102	110
Total Loans and Leases	102	110
Loans and Leases Past Due Greater Than 90 Days and Accruing	0	0
Nonaccrual Loans and Leases	0	0
Acquired | 31-60 days past due
Age analysis of past due loans
Past Due	2,788	1,023
Acquired | 31-60 days past due | Commercial real estate loans
Age analysis of past due loans
Past Due	348	708
Acquired | 31-60 days past due | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Past Due	0	0
Acquired | 31-60 days past due | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Past Due	348	348
Acquired | 31-60 days past due | Commercial real estate loans | Construction
Age analysis of past due loans
Past Due	0	360
Acquired | 31-60 days past due | Commercial loans and leases
Age analysis of past due loans
Past Due	0	124
Acquired | 31-60 days past due | Commercial loans and leases | Commercial
Age analysis of past due loans
Past Due	0	124
Acquired | 31-60 days past due | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Past Due	0	0
Acquired | 31-60 days past due | Consumer loans
Age analysis of past due loans
Past Due	2,440	191
Acquired | 31-60 days past due | Consumer loans | Residential mortgage
Age analysis of past due loans
Past Due	1,892	0
Acquired | 31-60 days past due | Consumer loans | Home equity
Age analysis of past due loans
Past Due	548	191
Acquired | 31-60 days past due | Consumer loans | Other consumer
Age analysis of past due loans
Past Due	0	0
Acquired | 61-90 days past due
Age analysis of past due loans
Past Due	333	1,137
Acquired | 61-90 days past due | Commercial real estate loans
Age analysis of past due loans
Past Due	327	457
Acquired | 61-90 days past due | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Past Due	327	215
Acquired | 61-90 days past due | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Past Due	0	0
Acquired | 61-90 days past due | Commercial real estate loans | Construction
Age analysis of past due loans
Past Due	0	242
Acquired | 61-90 days past due | Commercial loans and leases
Age analysis of past due loans
Past Due	0	44
Acquired | 61-90 days past due | Commercial loans and leases | Commercial
Age analysis of past due loans
Past Due	0	44
Acquired | 61-90 days past due | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Past Due	0	0
Acquired | 61-90 days past due | Consumer loans
Age analysis of past due loans
Past Due	6	636
Acquired | 61-90 days past due | Consumer loans | Residential mortgage
Age analysis of past due loans
Past Due	0	371
Acquired | 61-90 days past due | Consumer loans | Home equity
Age analysis of past due loans
Past Due	6	265
Acquired | 61-90 days past due | Consumer loans | Other consumer
Age analysis of past due loans
Past Due	0	0
Acquired | Greater than 90 days past due
Age analysis of past due loans
Past Due	10,921	11,501
Acquired | Greater than 90 days past due | Commercial real estate loans
Age analysis of past due loans
Past Due	8,864	9,087
Acquired | Greater than 90 days past due | Commercial real estate loans | Commercial real estate
Age analysis of past due loans
Past Due	8,864	9,087
Acquired | Greater than 90 days past due | Commercial real estate loans | Multi-family mortgage
Age analysis of past due loans
Past Due	0	0
Acquired | Greater than 90 days past due | Commercial real estate loans | Construction
Age analysis of past due loans
Past Due	0	0
Acquired | Greater than 90 days past due | Commercial loans and leases
Age analysis of past due loans
Past Due	239	299
Acquired | Greater than 90 days past due | Commercial loans and leases | Commercial
Age analysis of past due loans
Past Due	232	290
Acquired | Greater than 90 days past due | Commercial loans and leases | Equipment financing
Age analysis of past due loans
Past Due	7	9
Acquired | Greater than 90 days past due | Consumer loans
Age analysis of past due loans
Past Due	1,818	2,115
Acquired | Greater than 90 days past due | Consumer loans | Residential mortgage
Age analysis of past due loans
Past Due	1,776	2,113
Acquired | Greater than 90 days past due | Consumer loans | Home equity
Age analysis of past due loans
Past Due	42	2
Acquired | Greater than 90 days past due | Consumer loans | Other consumer
Age analysis of past due loans
Past Due	$ 0	$ 0

Allowance for Loan and Lease _8

Allowance for Loan and Lease Losses (Recorded Investment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Impaired Loans and Leases
Recorded investment	$ 58,059		$ 58,059		$ 63,765
Unpaid principal balance	57,999		57,999		63,839
Related allowance	1,692		1,692		3,081
Average recorded investment	59,253	$ 57,721	62,697	$ 60,916
Interest income recognized, total	384	282	1,093	933
Recorded investment in loans and leases by portfolio segment
Total, Allowance	59,135		59,135		58,692
Total Loans and Leases	6,646,821		6,646,821		6,303,516
Originated
Impaired Loans and Leases
Recorded investment, loans with no related allowance recorded	32,357		32,357		39,485
Recorded investment, loans with related allowance recorded	6,720		6,720		9,285
Recorded investment	39,077		39,077		48,770
Unpaid principal balance with no related allowance recorded	32,297		32,297		39,576
Unpaid principal balance with related allowance recorded	6,718		6,718		9,268
Unpaid principal balance	39,015		39,015		48,844
Related allowance	1,652		1,652		3,055
Recorded investment, nonaccrual loans	20,700		20,700		22,700
Average recorded investment with no related allowance recorded	33,428	31,366	37,817	34,089
Average recorded investment with related allowance recorded	6,812	10,427	8,670	10,153
Average recorded investment	40,240	41,793	46,487	44,242
Interest income recognized with no related allowance recorded	231	229	882	792
Interest income recognized with related allowance recorded	41	32	76	78
Interest income recognized, total	272	261	958	870
Recorded investment in loans and leases by portfolio segment
Individually evaluated for impairment, allowance	1,652		1,652		3,055
Collectively evaluated for impairment, allowance	55,528		55,528		53,823
Total, Allowance	57,180		57,180		56,878
Individually evaluated for impairment, Loans and Leases	30,678		30,678		41,239
Collectively evaluated for impairment, Loans and Leases	6,305,398		6,305,398		5,867,870
Total Loans and Leases	6,336,076		6,336,076		5,909,109
Acquired
Impaired Loans and Leases
Recorded investment, loans with no related allowance recorded	18,531		18,531		14,841
Recorded investment, loans with related allowance recorded	451		451		154
Recorded investment	18,982		18,982		14,995
Unpaid principal balance with no related allowance recorded	18,533		18,533		14,841
Unpaid principal balance with related allowance recorded	451		451		154
Unpaid principal balance	18,984		18,984		14,995
Related allowance	40		40		26
Recorded investment, nonaccrual loans	1,000		1,000		1,300
Average recorded investment with no related allowance recorded	18,561	15,770	15,957	16,546
Average recorded investment with related allowance recorded	452	158	253	128
Average recorded investment	19,013	15,928	16,210	16,674
Interest income recognized with no related allowance recorded	107	20	129	60
Interest income recognized with related allowance recorded	5	1	6	3
Interest income recognized, total	112	21	135	63
Recorded investment in loans and leases by portfolio segment
Total, Allowance	1,955		1,955		1,814
Total Loans and Leases	310,745		310,745		394,407
Financial Asset Acquired and No Credit Deterioration
Recorded investment in loans and leases by portfolio segment
Individually evaluated for impairment, allowance	40		40		26
Collectively evaluated for impairment, allowance	355		355		135
Individually evaluated for impairment, Loans and Leases	7,144		7,144		2,476
Collectively evaluated for impairment, Loans and Leases	218,067		218,067		287,407
Financial Asset Acquired with Credit Deterioration
Recorded investment in loans and leases by portfolio segment
Total, Allowance	1,560		1,560		1,653
Total Loans and Leases	85,534		85,534		104,524
Commercial real estate loans
Recorded investment in loans and leases by portfolio segment
Total, Allowance	29,029		29,029		28,187
Total Loans and Leases	3,589,451		3,589,451		3,351,736
Commercial real estate loans | Originated
Impaired Loans and Leases
Recorded investment, loans with no related allowance recorded	3,971		3,971		5,569
Recorded investment, loans with related allowance recorded	70		70		396
Unpaid principal balance with no related allowance recorded	3,962		3,962		5,545
Unpaid principal balance with related allowance recorded	70		70		396
Related allowance	8		8		5
Average recorded investment with no related allowance recorded	3,964	5,717	5,543	6,756
Average recorded investment with related allowance recorded	70	0	336	0
Interest income recognized with no related allowance recorded	15	19	95	68
Interest income recognized with related allowance recorded	1	0	2	0
Recorded investment in loans and leases by portfolio segment
Individually evaluated for impairment, allowance	8		8		5
Collectively evaluated for impairment, allowance	27,507		27,507		26,617
Total, Allowance	27,515		27,515		26,622
Individually evaluated for impairment, Loans and Leases	3,811		3,811		5,610
Collectively evaluated for impairment, Loans and Leases	3,442,676		3,442,676		3,154,245
Total Loans and Leases	3,446,487		3,446,487		3,159,855
Commercial real estate loans | Acquired
Impaired Loans and Leases
Recorded investment, loans with no related allowance recorded	14,309		14,309		9,538
Unpaid principal balance with no related allowance recorded	14,311		14,311		9,538
Average recorded investment with no related allowance recorded	14,316	9,222	10,874	9,975
Interest income recognized with no related allowance recorded	91	1	94	3
Recorded investment in loans and leases by portfolio segment
Total, Allowance	1,514		1,514		1,565
Total Loans and Leases	142,964		142,964		191,881
Commercial real estate loans | Financial Asset Acquired and No Credit Deterioration
Recorded investment in loans and leases by portfolio segment
Individually evaluated for impairment, allowance	0		0		0
Collectively evaluated for impairment, allowance	63		63		32
Individually evaluated for impairment, Loans and Leases	4,870		4,870		0
Collectively evaluated for impairment, Loans and Leases	80,889		80,889		121,119
Commercial real estate loans | Financial Asset Acquired with Credit Deterioration
Recorded investment in loans and leases by portfolio segment
Total, Allowance	1,451		1,451		1,533
Total Loans and Leases	57,205		57,205		70,762
Commercial
Recorded investment in loans and leases by portfolio segment
Total, Allowance	24,393		24,393		25,283
Total Loans and Leases	1,850,388		1,850,388		1,768,958
Commercial | Originated
Impaired Loans and Leases
Recorded investment, loans with no related allowance recorded	25,761		25,761		30,927
Recorded investment, loans with related allowance recorded	5,421		5,421		8,224
Unpaid principal balance with no related allowance recorded	25,723		25,723		31,053
Unpaid principal balance with related allowance recorded	5,422		5,422		8,208
Related allowance	1,572		1,572		2,961
Average recorded investment with no related allowance recorded	26,826	22,938	29,605	24,641
Average recorded investment with related allowance recorded	5,511	9,052	7,482	9,261
Interest income recognized with no related allowance recorded	206	195	759	682
Interest income recognized with related allowance recorded	27	29	55	73
Recorded investment in loans and leases by portfolio segment
Individually evaluated for impairment, allowance	1,572		1,572		2,961
Collectively evaluated for impairment, allowance	22,439		22,439		22,131
Total, Allowance	24,011		24,011		25,092
Individually evaluated for impairment, Loans and Leases	23,124		23,124		32,127
Collectively evaluated for impairment, Loans and Leases	1,805,830		1,805,830		1,709,794
Total Loans and Leases	1,828,954		1,828,954		1,741,921
Commercial | Acquired
Impaired Loans and Leases
Recorded investment, loans with no related allowance recorded	476		476		531
Unpaid principal balance with no related allowance recorded	476		476		531
Average recorded investment with no related allowance recorded	486	1,118	535	1,438
Interest income recognized with no related allowance recorded	4	4	8	12
Recorded investment in loans and leases by portfolio segment
Total, Allowance	382		382		191
Total Loans and Leases	21,434		21,434		27,037
Commercial | Financial Asset Acquired and No Credit Deterioration
Recorded investment in loans and leases by portfolio segment
Individually evaluated for impairment, allowance	0		0		0
Collectively evaluated for impairment, allowance	276		276		83
Individually evaluated for impairment, Loans and Leases	405		405		404
Collectively evaluated for impairment, Loans and Leases	19,035		19,035		24,094
Commercial | Financial Asset Acquired with Credit Deterioration
Recorded investment in loans and leases by portfolio segment
Total, Allowance	106		106		108
Total Loans and Leases	1,994		1,994		2,539
Consumer loans
Recorded investment in loans and leases by portfolio segment
Total, Allowance	5,713		5,713		5,222
Total Loans and Leases	1,206,982		1,206,982		1,182,822
Consumer loans | Originated
Impaired Loans and Leases
Recorded investment, loans with no related allowance recorded	2,625		2,625		2,989
Recorded investment, loans with related allowance recorded	1,229		1,229		665
Unpaid principal balance with no related allowance recorded	2,612		2,612		2,978
Unpaid principal balance with related allowance recorded	1,226		1,226		664
Related allowance	72		72		89
Average recorded investment with no related allowance recorded	2,638	2,711	2,669	2,692
Average recorded investment with related allowance recorded	1,231	1,375	852	892
Interest income recognized with no related allowance recorded	10	15	28	42
Interest income recognized with related allowance recorded	13	3	19	5
Recorded investment in loans and leases by portfolio segment
Individually evaluated for impairment, allowance	72		72		89
Collectively evaluated for impairment, allowance	5,582		5,582		5,075
Total, Allowance	5,654		5,654		5,164
Individually evaluated for impairment, Loans and Leases	3,743		3,743		3,502
Collectively evaluated for impairment, Loans and Leases	1,056,892		1,056,892		1,003,831
Total Loans and Leases	1,060,635		1,060,635		1,007,333
Consumer loans | Acquired
Impaired Loans and Leases
Recorded investment, loans with no related allowance recorded	3,746		3,746		4,772
Recorded investment, loans with related allowance recorded	451		451		154
Unpaid principal balance with no related allowance recorded	3,746		3,746		4,772
Unpaid principal balance with related allowance recorded	451		451		154
Related allowance	40		40		26
Average recorded investment with no related allowance recorded	3,759	5,430	4,548	5,133
Average recorded investment with related allowance recorded	452	158	253	128
Interest income recognized with no related allowance recorded	12	15	27	45
Interest income recognized with related allowance recorded	5	$ 1	6	$ 3
Recorded investment in loans and leases by portfolio segment
Total, Allowance	59		59		58
Total Loans and Leases	146,347		146,347		175,489
Consumer loans | Financial Asset Acquired and No Credit Deterioration
Recorded investment in loans and leases by portfolio segment
Individually evaluated for impairment, allowance	40		40		26
Collectively evaluated for impairment, allowance	16		16		20
Individually evaluated for impairment, Loans and Leases	1,869		1,869		2,072
Collectively evaluated for impairment, Loans and Leases	118,143		118,143		142,194
Consumer loans | Financial Asset Acquired with Credit Deterioration
Recorded investment in loans and leases by portfolio segment
Total, Allowance	3		3		12
Total Loans and Leases	$ 26,335		$ 26,335		$ 31,223

Allowance for Loan and Lease _9

Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)loan	Sep. 30, 2018USD ($)loan	Sep. 30, 2019USD ($)loan	Sep. 30, 2018USD ($)loan	Dec. 31, 2018USD ($)
Receivables [Abstract]
On accrual	$ 22,233		$ 22,233		$ 12,257
On nonaccrual	5,763		5,763		8,684
Total troubled debt restructurings	$ 27,996		$ 27,996		$ 20,941
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans/ Leases | loan	9	2	18	25
Recorded Investment, At Modification	$ 7,692	$ 346	$ 15,928	$ 5,275
Recorded investment, at end of period	7,684	345	15,959	4,957
Specific Allowance for Loan and Lease Losses	73	114	427	897
Nonaccrual Loans and Leases	$ 392	$ 136	1,399	2,842
Additional Commitment			$ 766	$ 0
Defaulted, number of loans/leases | loan	2	2	1	2
Defaulted, recorded investment	$ 522	$ 1,086	$ 367	$ 1,086
Loans with one modification	7,684	345	15,959	4,873
Loans with more than one modification	0	0	0	84
Extended maturity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans with one modification	4,919	0	12,098	1,419
Adjusted interest rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans with one modification	252	0	252	0
Combination maturity, principal, interest rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans with one modification	2,513	345	3,609	3,454
Loans with more than one modification	$ 0	$ 0	$ 0	$ 84
Originated
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans/ Leases | loan	7	2	16	24
Recorded Investment, At Modification	$ 2,525	$ 346	$ 10,761	$ 5,150
Recorded investment, at end of period	2,517	345	10,792	4,834
Specific Allowance for Loan and Lease Losses	61	114	415	897
Nonaccrual Loans and Leases	$ 392	$ 136	1,399	2,719
Additional Commitment			$ 766	$ 0
Defaulted, number of loans/leases | loan	2	2	1	2
Defaulted, recorded investment	$ 522	$ 1,086	$ 367	$ 1,086
Originated | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans/ Leases | loan			1	1
Recorded Investment, At Modification			$ 73	$ 673
Recorded investment, at end of period			70	653
Specific Allowance for Loan and Lease Losses			8	0
Nonaccrual Loans and Leases			0	653
Additional Commitment			$ 0	$ 0
Defaulted, number of loans/leases | loan			0	0
Defaulted, recorded investment			$ 0	$ 0
Originated | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans/ Leases | loan	0	1	3	10
Recorded Investment, At Modification	$ 0	$ 137	$ 6,793	$ 1,911
Recorded investment, at end of period	0	136	7,146	1,867
Specific Allowance for Loan and Lease Losses	0	102	0	856
Nonaccrual Loans and Leases	$ 0	$ 136	0	1,867
Additional Commitment			$ 766	$ 0
Defaulted, number of loans/leases | loan	1	2	1	2
Defaulted, recorded investment	$ 367	$ 1,086	$ 367	$ 1,086
Originated | Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans/ Leases | loan	2		7	11
Recorded Investment, At Modification	$ 1,405		$ 2,775	$ 2,271
Recorded investment, at end of period	1,399		2,458	2,021
Specific Allowance for Loan and Lease Losses	30		376	29
Nonaccrual Loans and Leases	$ 49		1,056	199
Additional Commitment			$ 0	$ 0
Defaulted, number of loans/leases | loan	1		0	0
Defaulted, recorded investment	$ 155		$ 0	$ 0
Originated | Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans/ Leases | loan	3	1	3	1
Recorded Investment, At Modification	$ 869	$ 209	$ 869	$ 209
Recorded investment, at end of period	866	209	866	209
Specific Allowance for Loan and Lease Losses	29	12	29	12
Nonaccrual Loans and Leases	$ 343	$ 0	343	0
Additional Commitment			$ 0	$ 0
Defaulted, number of loans/leases | loan	0	0	0	0
Defaulted, recorded investment	$ 0	$ 0	$ 0	$ 0
Originated | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans/ Leases | loan	2		2	1
Recorded Investment, At Modification	$ 251		$ 251	$ 86
Recorded investment, at end of period	252		252	84
Specific Allowance for Loan and Lease Losses	2		2	0
Nonaccrual Loans and Leases	$ 0		0	0
Additional Commitment			$ 0	$ 0
Defaulted, number of loans/leases | loan	0		0	0
Defaulted, recorded investment	$ 0		$ 0	$ 0
Acquired
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans/ Leases | loan	2		2	1
Recorded Investment, At Modification	$ 5,167		$ 5,167	$ 125
Recorded investment, at end of period	5,167		5,167	123
Specific Allowance for Loan and Lease Losses	12		12	0
Nonaccrual Loans and Leases	$ 0		0	123
Additional Commitment			$ 0	$ 0
Defaulted, number of loans/leases | loan	0		0	0
Defaulted, recorded investment	$ 0		$ 0	$ 0
Acquired | Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans/ Leases | loan	1		1
Recorded Investment, At Modification	$ 297		$ 297
Recorded investment, at end of period	297		297
Specific Allowance for Loan and Lease Losses	12		12
Nonaccrual Loans and Leases	$ 0		0
Additional Commitment			$ 0
Defaulted, number of loans/leases | loan	0		0
Defaulted, recorded investment	$ 0		$ 0
Acquired | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans/ Leases | loan				1
Recorded Investment, At Modification				$ 125
Recorded investment, at end of period				123
Specific Allowance for Loan and Lease Losses				0
Nonaccrual Loans and Leases				123
Additional Commitment				$ 0
Defaulted, number of loans/leases | loan				0
Defaulted, recorded investment				$ 0
Acquired | Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans/ Leases | loan	1		1
Recorded Investment, At Modification	$ 4,870		$ 4,870
Recorded investment, at end of period	4,870		4,870
Specific Allowance for Loan and Lease Losses	$ 0		0
Nonaccrual Loans and Leases			0
Additional Commitment			$ 0
Defaulted, number of loans/leases | loan			0
Defaulted, recorded investment			$ 0

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets (Carrying Value of Goodwill and Other Intangible Assets) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Goodwill (beginning)	$ 160,427	$ 137,890
Additions	0	22,537
Balance at end of period	160,427	160,427
Total other intangible assets	4,843	6,086
Total goodwill and other intangible assets	165,270	166,513
Core deposits
Goodwill [Roll Forward]
Total other intangible assets	3,754	4,997
Trade name
Goodwill [Roll Forward]
Total other intangible assets	$ 1,089	$ 1,089

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2013
Trade name
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets		$ 1.1
Core deposits
Indefinite-lived Intangible Assets [Line Items]
Weighted-average amortization period	7 years

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets (Future Amortization Expense) (Details) $ in Thousands	Sep. 30, 2019USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2019	$ 456
Year ending:
2020	1,261
2021	850
2022	494
2023	263
2024	153
Thereafter	277
Total	$ 3,754

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Changes in accumulated other comprehensive (loss) income by component, net of tax
Balance	$ 918,468,000	$ 886,368,000	$ 910,619,000	$ 812,583,000
Other comprehensive income (loss)	1,634,000	(2,184,000)	12,235,000	(9,702,000)
Amounts reclassified out of AOCI	0	0	0	(53,000)
Balance	932,311,000	899,825,000	932,311,000	899,825,000
Accumulated Other Comprehensive Loss
Changes in accumulated other comprehensive (loss) income by component, net of tax
Balance	1,141,000	(13,415,000)	(9,460,000)	(5,950,000)
Balance	2,775,000	(15,599,000)	2,775,000	(15,599,000)
Investment Securities Available-for-Sale
Changes in accumulated other comprehensive (loss) income by component, net of tax
Balance	889,000	(13,578,000)	(9,712,000)	(6,113,000)
Other comprehensive income (loss)	1,634,000	(2,184,000)	12,235,000	(9,702,000)
Amounts reclassified out of AOCI				(53,000)
Balance	2,523,000	(15,762,000)	2,523,000	(15,762,000)
Postretirement Benefits
Changes in accumulated other comprehensive (loss) income by component, net of tax
Balance	252,000	163,000	252,000	163,000
Other comprehensive income (loss)	0	0	0	0
Amounts reclassified out of AOCI				0
Balance	$ 252,000	$ 163,000	$ 252,000	$ 163,000

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities (Customer Related Derivative Positions) (Details)	Sep. 30, 2019USD ($)derivative	Dec. 31, 2018USD ($)derivative
Derivatives and Hedging Activities
Collateral posted	$ 93,400,000	$ 5,900,000
Collateral posted, dealer counterparties	0	0
Receive fixed, pay variable
Derivatives and Hedging Activities
Total	$ 992,476,000	$ 714,500,000
Receive fixed, pay variable | Derivatives not designed as hedging instruments
Derivatives and Hedging Activities
Number of Positions | derivative	110,000	86,000
Notional Amount Maturing, Less than 1 year	$ 0	$ 1,931,000
Notional Amount Maturing, Less than 2 years	25,196,000	26,419,000
Notional Amount Maturing, Less than 3 years	8,896,000	0
Notional Amount Maturing, Less than 4 years	34,322,000	31,762,000
Notional Amount Maturing, Thereafter	924,062,000	654,388,000
Total	992,476,000	714,500,000
Fair Value	79,661,000	6,081,000
Pay fixed, receive variable
Derivatives and Hedging Activities
Total	$ 992,476,000	$ 714,500,000
Pay fixed, receive variable | Derivatives not designed as hedging instruments
Derivatives and Hedging Activities
Number of Positions | derivative	110,000	86,000
Notional Amount Maturing, Less than 1 year	$ 0	$ 1,931,000
Notional Amount Maturing, Less than 2 years	25,196,000	26,419,000
Notional Amount Maturing, Less than 3 years	8,896,000	0
Notional Amount Maturing, Less than 4 years	34,322,000	31,762,000
Notional Amount Maturing, Thereafter	924,062,000	654,388,000
Total	992,476,000	714,500,000
Fair Value	79,661,000	6,081,000
Risk participation-out agreements
Derivatives and Hedging Activities
Total	$ 177,155,000	$ 100,531,000
Risk participation-out agreements | Derivatives not designed as hedging instruments
Derivatives and Hedging Activities
Number of Positions | derivative	35,000	26,000
Notional Amount Maturing, Less than 1 year	$ 0	$ 0
Notional Amount Maturing, Less than 2 years	14,203,000	14,892,000
Notional Amount Maturing, Less than 3 years	0	0
Notional Amount Maturing, Less than 4 years	0	0
Notional Amount Maturing, Thereafter	162,952,000	85,639,000
Total	177,155,000	100,531,000
Fair Value	1,555,000	344,000
Risk participation-in agreements
Derivatives and Hedging Activities
Total	$ 56,096,000	$ 35,838,000
Risk participation-in agreements | Derivatives not designed as hedging instruments
Derivatives and Hedging Activities
Number of Positions | derivative	7,000	5,000
Notional Amount Maturing, Less than 1 year	$ 0	$ 0
Notional Amount Maturing, Less than 2 years	0	0
Notional Amount Maturing, Less than 3 years	0	0
Notional Amount Maturing, Less than 4 years	0	0
Notional Amount Maturing, Thereafter	56,096,000	35,838,000
Total	56,096,000	35,838,000
Fair Value	385,000	84,000
Buys foreign currency, sells U.S. currency | Foreign exchange contracts
Derivatives and Hedging Activities
Total	$ 1,315,000	$ 6,573,000
Buys foreign currency, sells U.S. currency | Foreign exchange contracts | Derivatives not designed as hedging instruments
Derivatives and Hedging Activities
Number of Positions | derivative	18,000	22,000
Notional Amount Maturing, Less than 1 year	$ 1,315,000	$ 6,573,000
Notional Amount Maturing, Less than 2 years	0	0
Notional Amount Maturing, Less than 3 years	0	0
Notional Amount Maturing, Less than 4 years	0	0
Notional Amount Maturing, Thereafter	0	0
Total	1,315,000	6,573,000
Fair Value	22,000	123,000
Sells foreign currency, buys U.S. currency | Foreign exchange contracts
Derivatives and Hedging Activities
Total	$ 1,420,000	$ 6,582,000
Sells foreign currency, buys U.S. currency | Foreign exchange contracts | Derivatives not designed as hedging instruments
Derivatives and Hedging Activities
Number of Positions | derivative	20,000	37,000
Notional Amount Maturing, Less than 1 year	$ 1,420,000	$ 6,582,000
Notional Amount Maturing, Less than 2 years	0	0
Notional Amount Maturing, Less than 3 years	0	0
Notional Amount Maturing, Less than 4 years	0	0
Notional Amount Maturing, Thereafter	0	0
Total	1,420,000	6,582,000
Fair Value	$ 16,000	$ 131,000

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities (Offsetting of Derivatives and Amounts Subject to Master Netting Agreements) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Asset derivatives
Assets, Gross Amounts Recognized	$ 81,434	$ 22,488
Assets, Gross Amounts Offset in the Statement of Financial Position	0	0
Assets, Net Amounts Presented in the Statement of Financial Position	81,434	22,488
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0	0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0	50
Assets, Net Amount	81,434	22,438
Liability derivatives
Liabilities, Gross Amounts Recognized	80,258	22,220
Liabilities, Gross Amounts Offset in the Statement of Financial Position	0	0
Liabilities, Net Amounts Presented in the Statement of Financial Position	80,258	22,220
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	52,488	5,877
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	40,870	0
Liabilities, Net Amount	(13,100)	16,343
Loan level derivatives
Asset derivatives
Assets, Gross Amounts Recognized	79,857	22,013
Assets, Gross Amounts Offset in the Statement of Financial Position	0	0
Assets, Net Amounts Presented in the Statement of Financial Position	79,857	22,013
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0	0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0	50
Assets, Net Amount	79,857	21,963
Liability derivatives
Liabilities, Gross Amounts Recognized	79,857	22,013
Liabilities, Gross Amounts Offset in the Statement of Financial Position	0	0
Liabilities, Net Amounts Presented in the Statement of Financial Position	79,857	22,013
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	52,488	5,877
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	40,870	0
Liabilities, Net Amount	(13,501)	16,136
Risk participation-out agreements
Asset derivatives
Assets, Gross Amounts Recognized	1,555	344
Assets, Gross Amounts Offset in the Statement of Financial Position	0	0
Assets, Net Amounts Presented in the Statement of Financial Position	1,555	344
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0	0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0	0
Assets, Net Amount	1,555	344
Risk participation-in agreements
Liability derivatives
Liabilities, Gross Amounts Recognized	385	84
Liabilities, Gross Amounts Offset in the Statement of Financial Position	0	0
Liabilities, Net Amounts Presented in the Statement of Financial Position	385	84
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0	0
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0	0
Liabilities, Net Amount	385	84
Foreign exchange contracts
Asset derivatives
Assets, Gross Amounts Recognized	22	131
Assets, Gross Amounts Offset in the Statement of Financial Position	0	0
Assets, Net Amounts Presented in the Statement of Financial Position	22	131
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0	0
Assets, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0	0
Assets, Net Amount	22	131
Liability derivatives
Liabilities, Gross Amounts Recognized	16	123
Liabilities, Gross Amounts Offset in the Statement of Financial Position	0	0
Liabilities, Net Amounts Presented in the Statement of Financial Position	16	123
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments Pledged	0	0
Liabilities, Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Pledged	0	0
Liabilities, Net Amount	$ 16	$ 123

Stock Based Compensation (Detai

Stock Based Compensation (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)financial_institutionplanshares	Sep. 30, 2018USD ($)shares	Sep. 30, 2019USD ($)financial_institutionplanshares	Sep. 30, 2018USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share-based compensation plans | plan	2		2
Shares issued upon satisfaction of required conditions of the Plans	212,460	119,040	212,460	119,040
Performance-based shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of financial institutions comprising peer group | financial_institution	45		45
Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of authorized shares	1,750,000		1,750,000
Share-based compensation expense | $	$ 0.8	$ 0.7	$ 2.5	$ 1.8
2011 Restricted Stock Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of authorized shares	500,000		500,000
Vesting equally over three years | Time-based shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of shares in tranche			50.00%
Award vesting period			3 years
Vesting, First Anniversary | Time-based shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			33.33%
Vesting, Second Anniversary | Time-based shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			33.33%
Vesting, Third Anniversary | Time-based shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			33.33%
Vesting after achievement of performance targets | Performance-based shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of shares in tranche			50.00%
Award vesting period			3 years

Earnings per Share ("EPS") (Det

Earnings per Share ("EPS") (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Numerator:
Net income	$ 22,596	$ 22,460	$ 65,534	$ 61,924
Denominator:
Weighted average shares outstanding	79,700,403	80,315,050	79,676,456	79,471,238
Effect of dilutive securities (in shares)	183,107	200,417	191,227	269,754
Adjusted weighted average shares outstanding	79,883,510	80,515,467	79,867,683	79,740,992
Basic EPS (in dollars per share)	$ 0.28	$ 0.28	$ 0.82	$ 0.78
Diluted EPS (in dollars per share)	$ 0.28	$ 0.28	$ 0.82	$ 0.78

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Carrying and Vair Value of Assets and Liabilities on a Recurring Basis) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Assets:
Equity securities held-for-trading	$ 4,581	$ 4,207
Derivatives	81,434	22,488
Liabilities:
Loan level derivatives	$ 80,258	22,220
Changes in generic pricing of securities period one, considered for analyzing changes in prices obtained from pricing service (in years)	15 years
Changes in generic pricing of securities period two, considered for analyzing changes in prices obtained from pricing service (in years)	30 years
Recurring basis
Assets:
Equity securities held-for-trading	$ 4,581	4,207
Recurring basis | Investment securities available for sale
Assets:
Investment securities available-for-sale	467,339	502,793
Recurring basis | GSE debentures
Assets:
Investment securities available-for-sale	186,170	181,079
Recurring basis | GSE CMOs
Assets:
Investment securities available-for-sale	91,851	103,130
Recurring basis | GSE MBSs
Assets:
Investment securities available-for-sale	142,079	165,089
Recurring basis | SBA commercial loan asset-backed securities
Assets:
Investment securities available-for-sale	37	51
Recurring basis | Corporate debt obligations
Assets:
Investment securities available-for-sale	32,981	39,708
Recurring basis | U.S. Treasury bonds
Assets:
Investment securities available-for-sale	14,221	13,736
Recurring basis | Level 1
Assets:
Equity securities held-for-trading	3,567	3,235
Recurring basis | Level 1 | Investment securities available for sale
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 1 | GSE debentures
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 1 | GSE CMOs
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 1 | GSE MBSs
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 1 | SBA commercial loan asset-backed securities
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 1 | Corporate debt obligations
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 1 | U.S. Treasury bonds
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 2
Assets:
Equity securities held-for-trading	1,014	972
Recurring basis | Level 2 | Investment securities available for sale
Assets:
Investment securities available-for-sale	467,339	502,793
Recurring basis | Level 2 | GSE debentures
Assets:
Investment securities available-for-sale	186,170	181,079
Recurring basis | Level 2 | GSE CMOs
Assets:
Investment securities available-for-sale	91,851	103,130
Recurring basis | Level 2 | GSE MBSs
Assets:
Investment securities available-for-sale	142,079	165,089
Recurring basis | Level 2 | SBA commercial loan asset-backed securities
Assets:
Investment securities available-for-sale	37	51
Recurring basis | Level 2 | Corporate debt obligations
Assets:
Investment securities available-for-sale	32,981	39,708
Recurring basis | Level 2 | U.S. Treasury bonds
Assets:
Investment securities available-for-sale	14,221	13,736
Recurring basis | Level 3
Assets:
Equity securities held-for-trading	0	0
Recurring basis | Level 3 | Investment securities available for sale
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 3 | GSE debentures
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 3 | GSE CMOs
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 3 | GSE MBSs
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 3 | SBA commercial loan asset-backed securities
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 3 | Corporate debt obligations
Assets:
Investment securities available-for-sale	0	0
Recurring basis | Level 3 | U.S. Treasury bonds
Assets:
Investment securities available-for-sale	0	0
Loan level derivatives
Assets:
Derivatives	79,857	22,013
Liabilities:
Loan level derivatives	79,857	22,013
Loan level derivatives | Recurring basis
Assets:
Derivatives	79,857	22,013
Liabilities:
Loan level derivatives	79,857	22,013
Loan level derivatives | Recurring basis | Level 1
Assets:
Derivatives	0	0
Liabilities:
Loan level derivatives	0	0
Loan level derivatives | Recurring basis | Level 2
Assets:
Derivatives	79,857	22,013
Liabilities:
Loan level derivatives	79,857	22,013
Loan level derivatives | Recurring basis | Level 3
Assets:
Derivatives	0	0
Liabilities:
Loan level derivatives	0	0
Risk participation-out agreements
Assets:
Derivatives	1,555	344
Risk participation-out agreements | Recurring basis
Assets:
Derivatives	1,555	344
Risk participation-out agreements | Recurring basis | Level 1
Assets:
Derivatives	0	0
Risk participation-out agreements | Recurring basis | Level 2
Assets:
Derivatives	1,555	344
Risk participation-out agreements | Recurring basis | Level 3
Assets:
Derivatives	0	0
Risk participation-in agreements
Liabilities:
Loan level derivatives	385	84
Risk participation-in agreements | Recurring basis
Liabilities:
Loan level derivatives	385	84
Risk participation-in agreements | Recurring basis | Level 1
Liabilities:
Loan level derivatives	0	0
Risk participation-in agreements | Recurring basis | Level 2
Liabilities:
Loan level derivatives	385	84
Risk participation-in agreements | Recurring basis | Level 3
Liabilities:
Loan level derivatives	0	0
Foreign exchange contracts
Assets:
Derivatives	22	131
Liabilities:
Loan level derivatives	16	123
Foreign exchange contracts | Recurring basis
Assets:
Derivatives	22	131
Liabilities:
Loan level derivatives	16	123
Foreign exchange contracts | Recurring basis | Level 1
Assets:
Derivatives	0	0
Liabilities:
Loan level derivatives	0	0
Foreign exchange contracts | Recurring basis | Level 2
Assets:
Derivatives	22	131
Liabilities:
Loan level derivatives	16	123
Foreign exchange contracts | Recurring basis | Level 3
Assets:
Derivatives	0	0
Liabilities:
Loan level derivatives	$ 0	$ 0

Fair Value of Financial Instr_4

Fair Value of Financial Instruments (Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis) (Details) - Nonrecurring basis - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	$ 4,462	$ 8,222
Level 1
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	0	0
Level 2
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	1,931	965
Level 3
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	2,531	7,257
Collateral-dependent impaired loans and leases
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	2,330	4,203
Collateral-dependent impaired loans and leases | Level 1
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	0	0
Collateral-dependent impaired loans and leases | Level 2
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	0	0
Collateral-dependent impaired loans and leases | Level 3
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	2,330	4,203
OREO
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	201	3,054
OREO | Level 1
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	0	0
OREO | Level 2
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	0	0
OREO | Level 3
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	201	3,054
Repossessed assets
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	1,931	965
Repossessed assets | Level 1
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	0	0
Repossessed assets | Level 2
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	1,931	965
Repossessed assets | Level 3
Fair value of assets and liabilities
Total assets measured at fair value on a non-recurring basis	$ 0	$ 0

Fair Value of Financial Instr_5

Fair Value of Financial Instruments (Quantitative Information for Level 3 Assets Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Nonrecurring basis
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value of assets	$ 4,462	$ 8,222
Nonrecurring basis | Other real estate owned
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value of assets	201	3,054
Level 3 | Nonrecurring basis
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value of assets	2,531	7,257
Level 3 | Nonrecurring basis | Auction-rate municipal obligations | Discounted cash flow
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value of assets	0	0
Level 3 | Nonrecurring basis | Collateral-dependent impaired loans and leases | Appraisal of collateral
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value of assets	2,329	4,203
Level 3 | Nonrecurring basis | Other real estate owned
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value of assets	201	3,054
Level 3 | Nonrecurring basis | Other real estate owned | Appraisal of collateral
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value of assets	$ 201	$ 3,054
Minimum | Level 3 | Discount for Costs to Sell
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value inputs, basis spread (as a percent)	0.00%
Minimum | Level 3 | Appraisal Adjustments
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value inputs, basis spread (as a percent)	0.00%
Maximum | Level 3 | Discount for Costs to Sell
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value inputs, basis spread (as a percent)	10.00%
Maximum | Level 3 | Appraisal Adjustments
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value inputs, basis spread (as a percent)	15.00%

Fair Value of Financial Instr_6

Fair Value of Financial Instruments (Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financial assets:
Investment securities held-to-maturity:	$ 95,802	$ 112,830
Loans and leases, net	6,587,686	6,244,824
Restricted equity securities	57,896	61,751
Financial liabilities:
Borrowed funds	48,373	52,734
Level 1
Financial assets:
Loans held-for-sale		0
Loans and leases, net	0	0
Restricted equity securities	0	0
Financial liabilities:
Certificates of deposits	0	0
Borrowed funds	0	0
Level 2
Financial assets:
Loans held-for-sale		3,247
Loans and leases, net	0	0
Restricted equity securities	0	0
Financial liabilities:
Certificates of deposits	2,016,106	1,778,860
Borrowed funds	990,173	886,545
Level 3
Financial assets:
Loans held-for-sale		0
Loans and leases, net	6,627,148	6,154,704
Restricted equity securities	57,896	61,751
Financial liabilities:
Certificates of deposits	0	0
Borrowed funds	0	0
Carrying Value
Financial assets:
Loans held-for-sale		3,247
Loans and leases, net	6,587,686	6,244,824
Restricted equity securities	57,896	61,751
Financial liabilities:
Certificates of deposits	2,011,622	1,789,165
Borrowed funds	986,405	920,542
Estimated Fair Value
Financial assets:
Loans held-for-sale		3,247
Loans and leases, net	6,627,148	6,154,704
Restricted equity securities	57,896	61,751
Financial liabilities:
Certificates of deposits	2,016,106	1,778,860
Borrowed funds	990,173	886,545
GSE debentures
Financial assets:
Investment securities held-to-maturity:	38,734	49,601
GSE debentures | Level 1
Financial assets:
Investment securities held-to-maturity:	0	0
GSE debentures | Level 2
Financial assets:
Investment securities held-to-maturity:	38,734	49,601
GSE debentures | Level 3
Financial assets:
Investment securities held-to-maturity:	0	0
GSE debentures | Carrying Value
Financial assets:
Investment securities held-to-maturity:	38,624	50,546
GSE debentures | Estimated Fair Value
Financial assets:
Investment securities held-to-maturity:	38,734	49,601
GSE MBSs
Financial assets:
Investment securities held-to-maturity:	9,835	11,131
GSE MBSs | Level 1
Financial assets:
Investment securities held-to-maturity:	0	0
GSE MBSs | Level 2
Financial assets:
Investment securities held-to-maturity:	9,835	11,131
GSE MBSs | Level 3
Financial assets:
Investment securities held-to-maturity:	0	0
GSE MBSs | Carrying Value
Financial assets:
Investment securities held-to-maturity:	9,937	11,426
GSE MBSs | Estimated Fair Value
Financial assets:
Investment securities held-to-maturity:	9,835	11,131
Municipal obligations
Financial assets:
Investment securities held-to-maturity:	46,763	51,598
Municipal obligations | Level 1
Financial assets:
Investment securities held-to-maturity:	0	0
Municipal obligations | Level 2
Financial assets:
Investment securities held-to-maturity:	46,763	51,598
Municipal obligations | Level 3
Financial assets:
Investment securities held-to-maturity:	0	0
Municipal obligations | Carrying Value
Financial assets:
Investment securities held-to-maturity:	46,102	52,304
Municipal obligations | Estimated Fair Value
Financial assets:
Investment securities held-to-maturity:	46,763	51,598
Foreign government obligations
Financial assets:
Investment securities held-to-maturity:	470	500
Foreign government obligations | Level 1
Financial assets:
Investment securities held-to-maturity:	0	0
Foreign government obligations | Level 2
Financial assets:
Investment securities held-to-maturity:	0	0
Foreign government obligations | Level 3
Financial assets:
Investment securities held-to-maturity:	470	500
Foreign government obligations | Carrying Value
Financial assets:
Investment securities held-to-maturity:	500	500
Foreign government obligations | Estimated Fair Value
Financial assets:
Investment securities held-to-maturity:	$ 470	$ 500

Commitments and Contingencies_2

Commitments and Contingencies (Financial Instrument with Off-balance-sheet Risk) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Loan commitments
Unadvanced portion of loans and leases	$ 795,285	$ 707,997
Unused lines of credit:
Home equity	515,589	487,476
Other consumer	35,923	50,404
Other commercial	393	347
Unused letters of credit:
Financial standby letters of credit	10,521	11,491
Performance standby letters of credit	3,696	3,075
Commercial and similar letters of credit	4,648	4,573
Commercial real estate
Loan commitments
Commitments to originate loans and leases	75,280	76,642
Commercial
Loan commitments
Commitments to originate loans and leases	77,395	75,713
Residential mortgage
Loan commitments
Commitments to originate loans and leases	63,229	16,363
Receive fixed, pay variable
Unused letters of credit:
Derivatives	992,476	714,500
Pay fixed, receive variable
Unused letters of credit:
Derivatives	992,476	714,500
Risk participation-out agreements
Unused letters of credit:
Derivatives	177,155	100,531
Risk participation-in agreements
Unused letters of credit:
Derivatives	56,096	35,838
Foreign exchange contracts | Buys foreign currency, sells U.S. currency
Unused letters of credit:
Derivatives	1,315	6,573
Foreign exchange contracts | Sells foreign currency, buys U.S. currency
Unused letters of credit:
Derivatives	$ 1,420	$ 6,582

Commitments and Contingencies_3

Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Leases [Abstract]
Fair value of interest rate swap assets	$ 81,400		$ 81,400		$ 22,500
Fair value of interest rate swap liabilities	80,300		80,300		22,200
Derivative asset	81,434		81,434		22,488
Derivative liability	80,258		80,258		$ 22,220
Lessee, Lease, Description [Line Items]
Real estate taxes			1,400	$ 1,400
Other expenditures			300	300
Total operating rental expense	$ 1,500		$ 4,600
Total rental expense		$ 1,600		$ 4,600
Minimum
Lessee, Lease, Description [Line Items]
Lease term	3 years		3 years
Maximum
Lessee, Lease, Description [Line Items]
Lease term	25 years		25 years

Commitments and Contingencies_4

Commitments and Contingencies (Lease Costs, Cash Flows and Balance Sheet Supplemental Information) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)
Leases [Abstract]
Operating lease cost	$ 4,644
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	4,658
Right-of-use assets obtained in exchange for new lease obligations:
Operating leases	72
Supplemental balance sheet information related to operating leases was as follows:
Operating lease right-of-use assets	26,216
Operating lease liabilities	$ 26,216
Weighted Average Remaining Lease Term
Operating leases	7 years 7 months 6 days
Weighted Average Discount Rate
Operating leases	3.20%

Commitments and Contingencies_5

Commitments and Contingencies (Maturites of Operating Leases) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Operating Leases, After Adoption of 842
Remainder of 2019	$ 1,553
2020	5,883
2021	5,263
2022	4,575
2023	3,672
2024	2,305
Thereafter	6,163
Total	29,414
Less imputed interest	(3,198)
Operating lease liabilities	$ 26,216
Operating Leases, Before Adoption of 842
2019		$ 4,224
2020		4,932
2021		4,418
2022		3,602
2023		2,734
2024		1,866
Thereafter		6,637
Total		$ 28,413