Northwest Bancshares (NWBI) 10-Q 9 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 31, 2017
Document and Entity Information
Entity Registrant Name	Northwest Bancshares, Inc.
Entity Central Index Key	1,471,265
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		102,620,425
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 104,372	$ 119,403
Interest-earning deposits in other financial institutions	60,662	266,902
Federal funds sold and other short-term investments	642	3,562
Marketable securities available-for-sale (amortized cost of $867,311 and $825,552)	869,481	826,200
Marketable securities held-to-maturity (fair value of $32,282 and $20,426)	31,961	19,978
Total cash and investments	1,067,118	1,236,045
Personal Banking loans:
Residential mortgage loans held-for-sale	1,382	9,625
Residential mortgage loans	2,741,844	2,688,541
Home equity loans	1,313,435	1,345,370
Consumer loans	673,920	642,961
Total Personal Banking loans	4,730,581	4,686,497
Commercial Banking loans:
Commercial real estate loans	2,398,886	2,342,089
Commercial loans	596,671	528,761
Total Commercial Banking loans	2,995,557	2,870,850
Total loans	7,726,138	7,557,347
Allowance for loan losses	(56,927)	(60,939)
Total loans, net	7,669,211	7,496,408
Assets held-for-sale	0	152,528
Federal Home Loan Bank stock, at cost	7,984	7,390
Accrued interest receivable	22,802	21,699
Real estate owned, net	5,462	4,889
Premises and equipment, net	152,761	161,185
Bank owned life insurance	173,096	171,449
Goodwill	307,420	307,420
Other intangible assets	27,244	32,433
Other assets	26,716	32,194
Total assets	9,459,814	9,623,640
Liabilities:
Noninterest-bearing checking deposits	1,625,189	1,448,972
Interest-bearing checking deposits	1,451,818	1,428,317
Money market deposit accounts	1,759,395	1,841,567
Savings deposits	1,669,782	1,622,879
Time deposits	1,435,861	1,540,586
Total deposits	7,942,045	7,882,321
Liabilities held-for-sale	0	215,657
Borrowed funds	115,388	142,899
Junior subordinated deferrable interest debentures held by trusts that issued guaranteed capital debt securities	111,213	111,213
Advances by borrowers for taxes and insurance	21,864	36,879
Accrued interest payable	518	635
Other liabilities	62,939	63,373
Total liabilities	8,253,967	8,452,977
Shareholders’ equity:
Preferred stock, $0.01 par value: 50,000,000 authorized, no shares issued	0	0
Common stock, $0.01 par value: 500,000,000 shares authorized, 102,565,667 and 101,699,406 shares issued, respectively	1,026	1,017
Paid-in capital	728,163	718,834
Retained earnings	502,265	478,803
Accumulated other comprehensive loss	(25,607)	(27,991)
Total shareholders’ equity	1,205,847	1,170,663
Total liabilities and shareholders’ equity	$ 9,459,814	$ 9,623,640

CONSOLIDATED STATEMENTS OF FIN3

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Marketable securities available-for-sale, amortized cost	$ 867,311	$ 825,552
Marketable securities held-to-maturity, fair value	$ 32,282	$ 20,426
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	102,565,667	101,699,406

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest income:
Loans receivable	$ 85,373	$ 81,083	$ 252,838	$ 243,370
Mortgage-backed securities	3,118	2,030	8,327	6,374
Taxable investment securities	957	627	2,944	2,421
Tax-free investment securities	476	676	1,574	2,107
FHLB dividends	63	218	172	1,086
Interest-earning deposits	244	114	1,440	243
Total interest income	90,231	84,748	267,295	255,601
Interest expense:
Deposits	5,795	5,653	17,086	17,606
Borrowed funds	1,199	1,801	3,664	13,602
Total interest expense	6,994	7,454	20,750	31,208
Net interest income	83,237	77,294	246,545	224,393
Provision for loan losses	3,027	5,538	13,226	11,397
Net interest income after provision for loan losses	80,210	71,756	233,319	212,996
Noninterest income:
Gain on sale of investments	1,497	58	1,517	412
Service charges and fees	12,724	11,012	37,190	31,707
Trust and other financial services income	4,793	3,434	13,697	9,972
Insurance commission income	1,992	2,541	7,139	8,023
Gain/ (loss) on real estate owned, net	(193)	(563)	(490)	(203)
Income from bank owned life insurance	1,078	1,380	3,798	4,080
Mortgage banking income	519	1,886	1,193	2,550
Gain on sale of offices	0	0	17,186	0
Other operating income	2,184	1,070	6,345	4,000
Total noninterest income	24,594	20,818	87,575	60,541
Noninterest expense:
Compensation and employee benefits	36,039	38,122	111,452	104,365
Premises and occupancy costs	6,951	6,094	21,570	18,906
Office operations	3,939	3,700	12,331	10,503
Collections expense	568	589	1,670	1,994
Processing expenses	9,650	8,844	29,198	25,430
Marketing expenses	2,488	2,239	7,482	6,671
Federal deposit insurance premiums	771	984	2,794	3,929
Professional services	2,321	1,815	7,348	5,777
Amortization of intangible assets	1,691	1,068	5,189	2,453
Real estate owned expense	310	206	809	812
Restructuring/ acquisition expense	1,398	7,183	4,255	11,204
FHLB prepayment penalty	0	0	0	36,978
Other expenses	2,673	2,836	9,609	10,055
Total noninterest expense	68,799	73,680	213,707	239,077
Income before income taxes	36,005	18,894	107,187	34,460
Federal and state income taxes expense	12,414	4,697	34,868	9,287
Net income	$ 23,591	$ 14,197	$ 72,319	$ 25,173
Basic earnings per share (in dollars per share)	$ 0.23	$ 0.14	$ 0.72	$ 0.25
Diluted earnings per share (in dollars per share)	$ 0.23	$ 0.14	$ 0.71	$ 0.25

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 23,591	$ 14,197	$ 72,319	$ 25,173
Net unrealized holding gains/ (losses) on marketable securities:
Unrealized holding gains/ (losses) net of tax of $164, $503, $(995), and $(2,377), respectively	(264)	(785)	1,684	3,717
Reclassification adjustment for (gains)/ losses included in net income, net of tax of $369, $23, $416, and $(1), respectively	(674)	(36)	(741)	3
Net unrealized holding gains/ (losses) on marketable securities	(938)	(821)	943	3,720
Change in fair value of interest rate swaps, net of tax of $(138), $(253), $(419), and $(267), respectively	258	471	779	497
Defined benefit plan:
Reclassification adjustment for prior period service costs included in net income, net of tax of $(153), $(144), $(460), and $(432), respectively	221	224	662	675
Other comprehensive income/(loss)	(459)	(126)	2,384	4,892
Total comprehensive income	$ 23,132	$ 14,071	$ 74,703	$ 30,065

CONSOLIDATED STATEMENTS OF COM6

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Unrealized holding gains (losses), tax	$ 164	$ 503	$ (995)	$ (2,377)
Reclassification adjustment for (gains)/losses included in net income, tax	369	23	416	(1)
Change in fair value of interest rate swaps, tax	(138)	(253)	(419)	(267)
Reclassification adjustment for prior period service costs included in net income, tax	$ (153)	$ (144)	$ (460)	$ (432)

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income / (Loss)	Unallocated common stock of ESOP	Northwest Savings Bank Employee Stock Ownership Plan (ESOP)Common Stock	Northwest Savings Bank Employee Stock Ownership Plan (ESOP)Paid-in Capital	Northwest Savings Bank Employee Stock Ownership Plan (ESOP)Unallocated common stock of ESOP
Balance beginning of the period (in shares) at Dec. 31, 2015		101,871,737
Balance beginning of the period at Dec. 31, 2015	$ 1,163,163	$ 1,019	$ 717,603	$ 489,292	$ (24,535)	$ (20,216)
Comprehensive income:
Net income	25,173			25,173
Other comprehensive income (loss), net of tax	4,892				4,892
Total comprehensive income	30,065			25,173	4,892
ESOP loan payoff (in shares)		(145,900)					(1,366,574)
ESOP loan payoff	(1,752)	$ (2)	(1,750)				$ (14)	$ (13,896)	$ 13,910
Exercise of stock options (in shares)		585,668
Exercise of stock options	6,406	$ 7	6,399
Stock-based compensation expense (in shares)		(323,717)
Stock-based compensation expense	9,927	$ 3	3,618			6,306
Dividends paid	(45,006)			(45,006)
Balance end of period (in shares) at Sep. 30, 2016		101,268,648
Balance end of the period at Sep. 30, 2016	1,162,803	$ 1,013	711,974	469,459	(19,643)	0
Balance beginning of the period (in shares) at Jun. 30, 2016		102,472,947
Balance beginning of the period at Jun. 30, 2016	1,155,455	$ 1,025	722,980	470,337	(19,517)	(19,370)
Comprehensive income:
Net income	14,197			14,197
Other comprehensive income (loss), net of tax	(126)				(126)
Total comprehensive income	14,071			14,197	(126)
ESOP loan payoff (in shares)							(1,366,574)
ESOP loan payoff							$ (14)	$ (13,896)	$ 13,910
Exercise of stock options (in shares)		162,275
Exercise of stock options	1,823	$ 2	1,821
Stock-based compensation expense (in shares)		0
Stock-based compensation expense	6,529	$ 0	1,069			5,460
Dividends paid	(15,075)			(15,075)
Balance end of period (in shares) at Sep. 30, 2016		101,268,648
Balance end of the period at Sep. 30, 2016	1,162,803	$ 1,013	711,974	469,459	(19,643)	$ 0
Balance beginning of the period (in shares) at Dec. 31, 2016		101,699,406
Balance beginning of the period at Dec. 31, 2016	1,170,663	$ 1,017	718,834	478,803	(27,991)
Comprehensive income:
Net income	72,319			72,319
Other comprehensive income (loss), net of tax	2,384				2,384
Total comprehensive income	74,703			72,319	2,384
Exercise of stock options (in shares)		488,211
Exercise of stock options	5,616	$ 5	5,611
Stock-based compensation expense (in shares)		(378,050)
Stock-based compensation expense	3,722	$ 4	3,718
Dividends paid	(48,857)			(48,857)
Balance end of period (in shares) at Sep. 30, 2017		102,565,667
Balance end of the period at Sep. 30, 2017	1,205,847	$ 1,026	728,163	502,265	(25,607)
Balance beginning of the period (in shares) at Jun. 30, 2017		102,478,146
Balance beginning of the period at Jun. 30, 2017	1,196,930	$ 1,025	726,036	495,017	(25,148)
Comprehensive income:
Net income	23,591			23,591
Other comprehensive income (loss), net of tax	(459)				(459)
Total comprehensive income	23,132			23,591	(459)
Exercise of stock options (in shares)		87,521
Exercise of stock options	1,034	$ 1	1,033
Stock-based compensation expense (in shares)		0
Stock-based compensation expense	1,094	$ 0	1,094
Dividends paid	(16,343)			(16,343)
Balance end of period (in shares) at Sep. 30, 2017		102,565,667
Balance end of the period at Sep. 30, 2017	$ 1,205,847	$ 1,026	$ 728,163	$ 502,265	$ (25,607)

CONSOLIDATED STATEMENTS OF CHA8

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Stockholders' Equity [Abstract]
Other comprehensive income, tax	$ 242	$ 129	$ (1,458)	$ (3,077)
Stock-based compensation expense, tax benefits		$ 81		$ 287
Dividends paid, per share (in dollars per share)	$ 0.16	$ 0.15	$ 0.48	$ 0.45

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
OPERATING ACTIVITIES:
Net Income	$ 72,319	$ 25,173
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	13,226	11,397
Net gain on sale of assets	(1,443)	(2,965)
Net gain on sale of offices	(17,186)	0
Net depreciation, amortization and accretion	10,951	9,974
Decrease in other assets	22,518	23,588
Increase in other liabilities	1,761	9,003
Net amortization on marketable securities	1,535	1,533
Noncash write-down of real estate owned	980	1,274
FHLB prepayment penalty	0	24,520
Deferred income tax benefit	0	(445)
Origination of loans held for sale	(59,401)	(188,474)
Proceeds from sale of loans held for sale	68,041	158,058
Noncash compensation expense related to stock benefit plans	3,722	9,640
Net cash provided by operating activities	117,023	82,276
INVESTING ACTIVITIES:
Purchase of marketable securities held-to-maturity	(23,621)	0
Purchase of marketable securities available-for-sale	(210,111)	(238,673)
Proceeds from maturities and principal reductions of marketable securities held-to-maturity	11,625	9,097
Proceeds from maturities and principal reductions of marketable securities available-for-sale	144,846	227,283
Proceeds from sale of marketable securities available-for-sale	23,501	91
Loan originations	(2,050,885)	(1,950,953)
Proceeds from loan maturities and principal reductions	2,002,816	1,849,593
Net (purchase)/ sale of Federal Home Loan Bank stock	(594)	33,243
Proceeds from sale of real estate owned	3,687	6,557
Sale of real estate owned for investment, net	456	456
Net purchase of premises and equipment	(1,242)	(12,485)
Acquisitions, net of cash received	0	1,118,400
Net cash provided by/ (used in) investing activities	(99,522)	1,042,609
FINANCING ACTIVITIES:
Decrease in deposits, net	(155,925)	(52,624)
Repayments of long-term borrowings, including prepayment penalty	0	(774,863)
Net increase/ (decrease) in short-term borrowings	(27,511)	(88,773)
Decrease in advances by borrowers for taxes and insurance	(15,015)	(15,402)
Cash dividends paid	(48,857)	(45,006)
Purchase of common stock for retirement	0	(1,752)
Proceeds from stock options exercised	5,616	6,406
Excess tax benefit from stock-based compensation	0	287
Net cash used in financing activities	(241,692)	(971,727)
Net increase/ (decrease) in cash and cash equivalents	(224,191)	153,158
Cash and cash equivalents at beginning of period	389,867	167,408
Cash and cash equivalents at end of period	165,676	320,566
Cash and cash equivalents:
Total cash and cash equivalents	389,867	167,408
Cash paid during the period for:
Interest on deposits and borrowings (including interest credited to deposit accounts of $16,644 and $16,556, respectively)	20,875	32,519
Income taxes	20,705	4,086
Business acquisitions:
Fair value of assets acquired, excluding cash received	0	545,796
Cash paid, net	0	1,118,400
Liabilities assumed	0	1,664,196
Non-cash activities:
Loan foreclosures and repossessions	4,750	2,877
Sale of real estate owned financed by the Company	$ 1,810	$ 1,773

CONSOLIDATED STATEMENTS OF CA10

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Statement of Cash Flows [Abstract]
Interest on deposits and borrowings, interest credited to deposit accounts	$ 16,644	$ 16,556

Basis of Presentation and Infor

Basis of Presentation and Informational Disclosures	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Informational Disclosures	Basis of Presentation and Informational Disclosures Northwest Bancshares, Inc. (the “Company”) or (“NWBI”), a Maryland corporation headquartered in Warren, Pennsylvania, is a savings and loan holding company regulated by the Board of Governors of the Federal Reserve System. The primary activity of the Company is the ownership of all of the issued and outstanding common stock of Northwest Bank, a Pennsylvania-chartered savings bank (“Northwest”). Northwest is regulated by the FDIC and the Pennsylvania Department of Banking. Northwest operates 173 community-banking offices throughout Pennsylvania, western New York, and eastern Ohio. The accompanying unaudited consolidated financial statements include the accounts of the Company and its subsidiary, Northwest, and Northwest’s subsidiaries Northwest Settlement Agency, LLC, Northwest Consumer Discount Company, Northwest Financial Services, Inc., Northwest Advisors, Inc., Northwest Capital Group, Inc., Allegheny Services, Inc., Great Northwest Corporation, Boetger & Associates, Inc. and The Bert Company. The unaudited consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles for interim financial information and with the instructions for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information or footnotes required for complete annual financial statements. In the opinion of management, all adjustments necessary for the fair presentation of the Company’s financial position and results of operations have been included. The consolidated statements have been prepared using the accounting policies described in the financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016 updated, as required, for any new pronouncements or changes. Certain items previously reported have been reclassified to conform to the current year’s reporting format. The results of operations for the quarter and nine months ended September 30, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017 , or any other period. Stock-Based Compensation On May 17, 2017, the Company granted employees 754,210 stock options and directors 64,800 stock options with an exercise price of $15.57 and grant date fair value of $1.55 per stock option, and the Company granted employees 353,750 restricted common shares and directors 24,300 restricted common shares with a grant date fair value of $15.24 . Granted stock options and common shares vest over a ten -year period with the first vesting occurring on the grant date. Stock-based compensation expense of $1.1 million and $6.4 million for the quarters ended September 30, 2017 and 2016 , and $3.7 million and $9.6 million for the nine months ended September 30, 2017 and 2016 , respectively, was recognized in compensation expense relating to stock benefit plans. At September 30, 2017 there was compensation expense of $4.4 million to be recognized for awarded but unvested stock options and $17.7 million for unvested common shares. Income Taxes- Uncertain Tax Positions Accounting standards prescribe a comprehensive model for how a company should recognize, measure, present and disclose in its financial statements uncertain tax positions that the company has taken or expects to take on a tax return. A tax benefit from an uncertain position may be recognized only if it is “more likely than not” that the position is sustainable, based on its technical merits. The tax benefit of a qualifying position is the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with a taxing authority having full knowledge of all relevant information. At September 30, 2017 the Company had no liability for unrecognized tax benefits. The Company recognizes interest accrued related to: (1) unrecognized tax benefits in other expenses and (2) refund claims in other operating income, and penalties (if any) in other expenses. We are subject to audit by the Internal Revenue Service and any state in which we conduct business for the tax periods ended December 31, 2016 , 2015 , and 2014 . Impact of New Accounting Standards In May 2014 the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-9, “Revenue from Contracts with Customers (Topic 606)”. This guidance supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance. The core principle of this guidance requires an entity to recognize revenue upon the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services and provides five steps to be analyzed to accomplish the core principle. This guidance is effective retrospectively for annual reporting periods beginning after December 15, 2017, including interim periods within those years and early adoption is not permitted. Our revenue is comprised of net interest income on financial assets and financial liabilities, which is explicitly excluded from the scope of ASU 2014-09, and non-interest income. With respect to non-interest income we are substantially complete with our overall assessment of revenue streams and reviewing of related contracts potentially affected by the ASU, including service charges and fees, trust and other financial services income, insurance commission income, and other operating income. Our assessment suggests that adoption of this ASU should not materially change the method in which we currently recognize revenue for these revenue streams. We are also substantially complete with our evaluation of certain costs related to these revenue streams to determine whether such costs should be presented as expenses or contra-revenue (i.e., gross vs. net). In addition, we are evaluating the ASU’s expanded disclosure requirements. We plan to adopt ASU No. 2014-09 on January 1, 2018 utilizing the modified retrospective approach with a cumulative effect adjustment to opening retained earnings, if such adjustment is deemed to be material. In February 2016 the FASB issued ASU 2016-2, “Leases” . This guidance requires a lessee to recognize in the statement of financial condition a liability to make lease payments and a right-of-use asset representing the right to use the underlying asset for the term of the lease. Optional periods should only be recognized if the lessee is reasonably certain to exercise the option. For leases with a term of twelve months or less, the lessee is permitted not to recognize lease assets and lease liabilities and should recognize lease expense for such leases generally on a straight-line basis over the term of the lease. This guidance is effective for annual periods beginning after December 15, 2018, including interim periods within those years and early adoption is permitted. We are currently evaluating the impact this standard will have on our results of operations and financial position. In June 2016, the FASB issued ASU 2016-13, " Financial Instruments-Credit Losses (Topic 326)-Measurement of Credit Losses on Financial Instruments" , which eliminates the probable initial recognition threshold for credit losses requiring, instead, that all financial assets (or group of financial assets) measured at amortized cost be presented at the net amount expected to be collected inclusive of the entity’s current estimate of all lifetime expected credit losses. This guidance also applies to certain off-balance-sheet credit exposures such as unfunded commitments and non-derivative financial guarantees. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) in order to present the net carrying value at the amount expected to be collected on the financial asset. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The income statement under this guidance will reflect the initial recognition of current expected credit losses for newly recognized assets, as well as any increases or decreases of expected credit losses that have occurred during the period. This guidance retains many currently-existing disclosures related to the credit quality of an entity’s assets and the related allowance for credit losses amended to reflect the change to an expected credit loss methodology, as well as enhanced disclosures to provide information to users at a more disaggregated level. Upon adoption, ASU 2016-13 provides for a modified retrospective transition by means of a cumulative-effect adjustment to equity as of the beginning of the period in which the guidance is effective, except for debt securities for which an other-than-temporary impairment has previously been recognized. For these debt securities, a prospective transition is provided in order to maintain the same amortized cost prior to and subsequent to the effective date of the ASU. This guidance is effective for annual reporting periods beginning after December 15, 2019, and interim periods within those annual periods with early adoption permitted for fiscal years beginning after December 15, 2018, and interim periods within those annual periods. Management created a formal working group to govern the implementation of these amendments consisting of key stakeholders from finance, risk, and accounting. We are currently in the process of designing current expected credit loss estimation methodologies and systems, and collecting data to be able to comply with the standard. We are also evaluating the effect this standard will have on our results of operations, financial position and related disclosures. The impact of the ASU will depend upon the state of the economy and the nature of our portfolios at the date of adoption. In January 2017 the FASB issued ASU 2017-04, "Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" . This guidance eliminates the requirement to determine the fair value of individual assets and liabilities of a reporting unit to measure goodwill impairment. Under this guidance goodwill impairment testing will be performed by comparing the fair value of the reporting unit with its carrying amount and recognizing an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value. This guidance is effective for annual and interim goodwill impairment tests in fiscal years beginning after December 15, 2019, and should be applied on a prospective basis. We are currently evaluating the impact this standard will have on our results of operations and financial position. In March 2017, the FASB issued ASU No. 2017-07, “Compensation Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Costs and Net Periodic Postretirement Benefit Costs". This guidance provides financial statement users with clearer and disaggregated information related to the components of net periodic benefit cost and improve transparency of the presentation of net periodic benefit cost in the financial statements. This guidance is effective for annual and interim periods beginning after December 15, 2017. Early adoption is permitted and this guidance should be applied retrospectively. We are currently evaluating the impact this standard will have on our results of operations and financial position. In March 2017 the FASB issued ASU 2017-08, "Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities" . This guidance shortens the amortization period for certain callable debt securities held at a premium to the earliest call date from the maturity date. This guidance is effective for annual and interim periods beginning after December 15, 2018. Early adoption is permitted in any interim period. We are currently evaluating the impact this standard will have on our results of operations and financial position.

Business Segments

Business Segments	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Business Segments	Business Segments We previously operated in two reportable business segments: Community Banking and Consumer Finance. The Community Banking segment provides services traditionally offered by full-service community banks, including business and personal deposit accounts and business and personal loans, as well as insurance, brokerage and investment management and trust services. The Consumer Finance segment, which was comprised of Northwest Consumer Discount Company ("NCDC"), a subsidiary of Northwest offered personal installment loans for a variety of consumer and real estate products. This activity was funded primarily through an intercompany borrowing relationship with Allegheny Services, Inc., a subsidiary of Northwest. All NCDC offices were closed on July 14, 2017. Net income is the primary measure used by management to measure segment performance. The following tables provide financial information for these reportable segments. The “All Other” column represents the parent company and elimination entries necessary to reconcile to the consolidated amounts presented in the financial statements. At or for the quarter ended (in thousands): Community Consumer September 30, 2017 Banking Finance All other (1) Consolidated External interest income $ 89,711 475 45 90,231 Intersegment interest income/ expense 138 — (138 ) — Interest expense 5,871 138 985 6,994 Provision for loan losses 8,693 (5,666 ) — 3,027 Noninterest income 23,922 36 636 24,594 Noninterest expense 67,493 1,941 (635 ) 68,799 Income tax expense 10,656 1,700 58 12,414 Net income $ 21,058 2,398 135 23,591 Total assets $ 9,404,881 44,849 10,084 9,459,814 (1) Consists of intercompany elimination entries and holding company income, expense and assets. Community Consumer September 30, 2016 Banking Finance All other (1) Consolidated External interest income $ 80,245 4,264 239 84,748 Intersegment interest income/ expense 645 — (645 ) — Interest expense 6,338 645 471 7,454 Provision for loan losses 4,276 1,262 — 5,538 Noninterest income 20,424 372 22 20,818 Noninterest expense 70,580 2,908 192 73,680 Income tax expense/ (benefit) 5,147 (74 ) (376 ) 4,697 Net income/ (loss) $ 14,973 (105 ) (671 ) 14,197 Total assets $ 9,590,487 109,601 14,519 9,714,607 (1) Consists of intercompany elimination entries and holding company income, expense and assets. At or for the nine months ended (in thousands): Community Consumer September 30, 2017 Banking Finance All other (1) Consolidated External interest income $ 259,160 8,008 127 267,295 Intersegment interest income 1,473 — (1,473 ) — Interest expense 17,344 1,473 1,933 20,750 Provision for loan losses 15,371 (2,145 ) — 13,226 Noninterest income 85,653 357 1,565 87,575 Noninterest expense 203,225 9,458 1,024 213,707 Income tax expense/ (benefit) 36,028 (175 ) (985 ) 34,868 Net income/ (loss) $ 74,318 (246 ) (1,753 ) 72,319 Total assets $ 9,404,881 44,849 10,084 9,459,814 (1) Consists of intercompany elimination entries and holding company income, expense and assets. Community Consumer September 30, 2016 Banking Finance All other (1) Consolidated External interest income $ 242,081 12,831 689 255,601 Intersegment interest income 1,918 — (1,918 ) — Interest expense 27,943 1,918 1,347 31,208 Provision for loan losses 8,854 2,543 — 11,397 Noninterest income 59,278 1,152 111 60,541 Noninterest expense 229,492 8,715 870 239,077 Income tax expense/ (benefit) 10,144 335 (1,192 ) 9,287 Net income/ (loss) $ 26,844 472 (2,143 ) 25,173 Total assets $ 9,590,487 109,601 14,519 9,714,607 (1) Consists of intercompany elimination entries and holding company income, expense and assets.

Investment securities and impai

Investment securities and impairment of investment securities	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Investment securities and impairment of investment securities	Investment securities and impairment of investment securities The following table shows the portfolio of investment securities available-for-sale at September 30, 2017 (in thousands): Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value Debt issued by the U.S. government and agencies: Due in one year or less $ 2 — — 2 Debt issued by government sponsored enterprises: Due in one year or less 96,608 36 (244 ) 96,400 Due in one year through five years 141,476 34 (1,543 ) 139,967 Due in five years through ten years — — — — Due after ten years 5,304 — (72 ) 5,232 Equity securities 824 131 (6 ) 949 Municipal securities: Due in one year or less 2,312 13 — 2,325 Due in one year through five years 7,472 142 (3 ) 7,611 Due in five years through ten years 12,315 165 — 12,480 Due after ten years 30,226 572 — 30,798 Corporate debt issues: Due after ten years 14,280 4,611 (213 ) 18,678 Residential mortgage-backed securities: Fixed rate pass-through 143,106 1,460 (2,070 ) 142,496 Variable rate pass-through 35,140 1,573 (4 ) 36,709 Fixed rate non-agency CMOs 41 — — 41 Fixed rate agency CMOs 300,741 263 (2,855 ) 298,149 Variable rate agency CMOs 77,464 274 (94 ) 77,644 Total residential mortgage-backed securities 556,492 3,570 (5,023 ) 555,039 Total marketable securities available-for-sale $ 867,311 9,274 (7,104 ) 869,481 The following table shows the portfolio of investment securities available-for-sale at December 31, 2016 (in thousands): Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value Debt issued by the U.S. government and agencies: Due in one year or less $ 6 — — 6 Debt issued by government sponsored enterprises: Due in one year or less 74,980 5 (33 ) 74,952 Due after one year through five years 220,937 203 (2,504 ) 218,636 Due after five years through ten years 585 — (3 ) 582 Equity securities 3,351 1,095 (6 ) 4,440 Municipal securities: Due in one year or less 2,449 7 — 2,456 Due after one year through five years 9,448 105 (21 ) 9,532 Due after five years through ten years 11,794 137 (1 ) 11,930 Due after ten years 38,141 1,027 (16 ) 39,152 Corporate debt issues: Due after ten years 14,367 2,935 (322 ) 16,980 Residential mortgage-backed securities: Fixed rate pass-through 175,398 1,849 (2,680 ) 174,567 Variable rate pass-through 43,587 2,007 (6 ) 45,588 Fixed rate non-agency CMOs 100 1 — 101 Fixed rate agency CMOs 165,535 185 (3,455 ) 162,265 Variable rate agency CMOs 64,874 306 (167 ) 65,013 Total residential mortgage-backed securities 449,494 4,348 (6,308 ) 447,534 Total marketable securities available-for-sale $ 825,552 9,862 (9,214 ) 826,200 The following table shows the portfolio of investment securities held-to-maturity at September 30, 2017 (in thousands): Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value Residential mortgage-backed securities: Fixed rate pass-through $ 3,971 189 — 4,160 Variable rate pass-through 2,412 57 — 2,469 Fixed rate agency CMOs 24,791 87 (25 ) 24,853 Variable rate agency CMOs 787 13 — 800 Total residential mortgage-backed securities 31,961 346 (25 ) 32,282 Total marketable securities held-to-maturity $ 31,961 346 (25 ) 32,282 The following table shows the portfolio of investment securities held-to-maturity at December 31, 2016 (in thousands): Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value Municipal securities: Due after ten years $ 4,808 65 — 4,873 Residential mortgage-backed securities: Fixed rate pass-through 4,807 217 — 5,024 Variable rate pass-through 2,848 58 — 2,906 Fixed rate agency CMOs 6,674 94 — 6,768 Variable rate agency CMOs 841 14 — 855 Total residential mortgage-backed securities 15,170 383 — 15,553 Total marketable securities held-to-maturity $ 19,978 448 — 20,426 The following table shows the fair value of and gross unrealized losses on investment securities, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position at September 30, 2017 (in thousands): Less than 12 months 12 months or more Total Fair value Unrealized loss Fair value Unrealized loss Fair value Unrealized loss U.S. government sponsored enterprises $ 55,288 (161 ) 174,633 (1,698 ) 229,921 (1,859 ) Municipal securities 1,735 (3 ) — — 1,735 (3 ) Corporate issues — — 2,220 (213 ) 2,220 (213 ) Equity securities — — 544 (6 ) 544 (6 ) Residential mortgage-backed securities - agency 195,468 (814 ) 177,277 (4,234 ) 372,745 (5,048 ) Total temporarily impaired securities $ 252,491 (978 ) 354,674 (6,151 ) 607,165 (7,129 ) The following table shows the fair value of and gross unrealized losses on investment securities, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position at December 31, 2016 (in thousands): Less than 12 months 12 months or more Total Fair value Unrealized loss Fair value Unrealized loss Fair value Unrealized loss U.S. government sponsored enterprises $ 238,003 (2,448 ) 9,205 (92 ) 247,208 (2,540 ) Municipal securities 5,621 (37 ) 66 (1 ) 5,687 (38 ) Corporate debt issues — — 2,107 (322 ) 2,107 (322 ) Equity securities — — 544 (6 ) 544 (6 ) Residential mortgage-backed securities - agency 213,662 (3,837 ) 87,723 (2,471 ) 301,385 (6,308 ) Total temporarily impaired securities $ 457,286 (6,322 ) 99,645 (2,892 ) 556,931 (9,214 ) We review our investment portfolio for indications of impairment. This review includes analyzing the length of time and the extent to which amortized costs have exceeded fair values, the financial condition and near-term prospects of the issuer, including any specific events which may influence the operations of the issuer, and the intent and ability to hold the investments for a period of time sufficient to allow for a recovery in value. Certain investments are evaluated using our best estimate of future cash flows. If the estimate of cash flows indicates that an adverse change has occurred, other-than-temporary impairment is recognized for the amount of the unrealized loss that was deemed credit related. Credit related impairment on all debt securities is recognized in earnings while noncredit related impairment on available-for-sale debt securities, not expected to be sold, is recognized in other comprehensive income. The table below shows a cumulative roll forward of credit losses recognized in earnings for debt securities held and not intended to be sold for the quarter and nine months ended (in thousands): 2017 2016 Beginning balance at July 1, (1) $ 7,942 8,408 Credit losses on debt securities for which other-than-temporary impairment was not previously recognized — — Reduction for losses realized during the quarter — (16 ) Reduction for securities sold/ called realized during the quarter — — Additional credit losses on debt securities for which other-than-temporary impairment was previously recognized — — Ending balance at September 30, $ 7,942 8,392 (1) The beginning balance represents credit losses included in other-than-temporary impairment charges recognized on debt securities in prior periods 2017 2016 Beginning balance at January 1, (1) $ 7,942 8,436 Credit losses on debt securities for which other-than-temporary impairment was not previously recognized — — Reduction for losses realized during the quarter — (44 ) Reduction for securities sold/ called realized during the nine months — — Additional credit losses on debt securities for which other-than-temporary impairment was previously recognized — — Ending balance at September 30, $ 7,942 8,392 (1) The beginning balance represents credit losses included in other-than-temporary impairment charges recognized on debt securities in prior periods.

Loans receivable

Loans receivable	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loans receivable	Loans receivable The following table shows a summary of our loans receivable at September 30, 2017 and December 31, 2016 (in thousands): September 30, 2017 December 31, 2016 Originated Acquired Total Originated Acquired Total Personal Banking: Residential mortgage loans (1) $ 2,624,216 119,463 2,743,679 2,565,620 133,511 2,699,131 Home equity loans 1,045,152 268,283 1,313,435 1,042,913 302,457 1,345,370 Consumer finance loans (2) 26,892 — 26,892 48,981 — 48,981 Consumer loans 522,604 110,611 633,215 418,656 163,622 582,278 Total Personal Banking 4,218,864 498,357 4,717,221 4,076,170 599,590 4,675,760 Commercial Banking: Commercial real estate loans 2,210,699 312,192 2,522,891 2,140,678 372,991 2,513,669 Commercial loans 556,750 69,724 626,474 481,543 75,676 557,219 Total Commercial Banking 2,767,449 381,916 3,149,365 2,622,221 448,667 3,070,888 Total loans receivable, gross 6,986,313 880,273 7,866,586 6,698,391 1,048,257 7,746,648 Deferred loan costs 24,707 1,799 26,506 20,081 2,294 22,375 Allowance for loan losses (50,845 ) (6,082 ) (56,927 ) (55,293 ) (5,646 ) (60,939 ) Undisbursed loan proceeds: Residential mortgage loans (13,146 ) — (13,146 ) (11,638 ) — (11,638 ) Commercial real estate loans (121,316 ) (2,689 ) (124,005 ) (168,595 ) (2,985 ) (171,580 ) Commercial loans (28,519 ) (1,284 ) (29,803 ) (26,168 ) (2,290 ) (28,458 ) Total loans receivable, net $ 6,797,194 872,017 7,669,211 6,456,778 1,039,630 7,496,408 (1) Includes $1.4 million and $9.6 million of loans held for sale at September 30, 2017 and December 31, 2016, respectively. (2) Represents consumer loans from our NCDC offices which are no longer being originated. Acquired loans were initially measured at fair value and subsequently accounted for under either Accounting Standards Codification (“ASC”) Topic 310-30 or ASC Topic 310-20. The following table provides information related to the outstanding principal balance and related carrying value of acquired loans for the dates indicated (in thousands): September 30, December 31, Acquired loans evaluated individually for future credit losses: Outstanding principal balance $ 10,344 16,108 Carrying value 7,393 12,665 Acquired loans evaluated collectively for future credit losses: Outstanding principal balance 877,022 1,040,378 Carrying value 870,705 1,032,611 Total acquired loans: Outstanding principal balance 887,366 1,056,486 Carrying value 878,098 1,045,276 The following table provides information related to the changes in the accretable discount, which includes income recognized from contractual cash flows for the dates indicated (in thousands): Total Balance at December 31, 2015 $ 2,019 Accretion (1,170 ) Net reclassification from nonaccretable yield 1,338 Balance at December 31, 2016 2,187 Accretion (1,130 ) Net reclassification from nonaccretable yield 498 Balance at September 30, 2017 $ 1,555 The following table provides information related to acquired impaired loans by portfolio segment and by class of financing receivable at and for the nine months ended September 30, 2017 (in thousands): Carrying value Outstanding principal balance Related impairment reserve Average recorded investment in impaired loans Interest income recognized Personal Banking: Residential mortgage loans $ 1,215 1,931 37 1,267 126 Home equity loans 1,166 2,274 9 1,264 124 Consumer loans 80 198 4 108 43 Total Personal Banking 2,461 4,403 50 2,639 293 Commercial Banking: Commercial real estate loans 4,828 5,826 67 7,212 823 Commercial loans 104 115 — 178 14 Total Commercial Banking 4,932 5,941 67 7,390 837 Total $ 7,393 10,344 117 10,029 1,130 The following table provides information related to acquired impaired loans by portfolio segment and by class of financing receivable at and for the year ended December 31, 2016 (in thousands): Carrying Outstanding Related Average Interest Personal Banking: Residential mortgage loans $ 1,319 2,062 204 1,650 202 Home equity loans 1,363 2,669 8 1,724 185 Consumer loans 136 303 3 201 51 Total Personal Banking 2,818 5,034 215 3,575 438 Commercial Banking: Commercial real estate loans 9,596 10,809 52 10,942 721 Commercial loans 251 265 — 249 11 Total Commercial Banking 9,847 11,074 52 11,191 732 Total $ 12,665 16,108 267 14,766 1,170 The following table provides information related to the allowance for loan losses by portfolio segment and by class of financing receivable for the quarter ended September 30, 2017 (in thousands): Balance Current period provision Charge-offs Recoveries Balance Originated loans: Personal Banking: Residential mortgage loans $ 3,986 (462 ) (211 ) 24 4,635 Home equity loans 3,295 615 (285 ) 8 2,957 Consumer finance loans 4,876 4,220 (3,891 ) 80 4,467 Consumer loans 7,383 4,594 (2,844 ) 353 5,280 Total Personal Banking 19,540 8,967 (7,231 ) 465 17,339 Commercial Banking: Commercial real estate loans 20,174 (2,529 ) (163 ) 282 22,584 Commercial loans 11,131 (5,445 ) (204 ) 76 16,704 Total Commercial Banking 31,305 (7,974 ) (367 ) 358 39,288 Total originated loans 50,845 993 (7,598 ) 823 56,627 Acquired loans: Personal Banking: Residential mortgage loans 77 (11 ) (4 ) 7 85 Home equity loans 748 324 (243 ) 44 623 Consumer loans 594 106 (158 ) 18 628 Total Personal Banking 1,419 419 (405 ) 69 1,336 Commercial Banking: Commercial real estate loans 3,301 2,433 (1,738 ) 160 2,446 Commercial loans 1,362 (818 ) (305 ) 9 2,476 Total Commercial Banking 4,663 1,615 (2,043 ) 169 4,922 Total acquired loans 6,082 2,034 (2,448 ) 238 6,258 Total $ 56,927 3,027 (10,046 ) 1,061 62,885 The following table provides information related to the allowance for loan losses by portfolio segment and by class of financing receivable for the quarter ended September 30, 2016 (in thousands): Balance Current period provision Charge-offs Recoveries Balance Originated loans: Personal Banking: Residential mortgage loans $ 4,002 1,109 (268 ) 139 3,022 Home equity loans 3,519 296 (161 ) 49 3,335 Consumer finance loans 3,429 1,014 (835 ) 111 3,139 Consumer loans 5,667 2,331 (1,700 ) 251 4,785 Total Personal Banking 16,617 4,750 (2,964 ) 550 14,281 Commercial Banking: Commercial real estate loans 24,530 (1,041 ) (602 ) 487 25,686 Commercial loans 16,877 1,668 (708 ) 561 15,356 Total Commercial Banking 41,407 627 (1,310 ) 1,048 41,042 Total originated loans 58,024 5,377 (4,274 ) 1,598 55,323 Acquired loans: Personal Banking: Residential mortgage loans 78 45 (86 ) 58 61 Home equity loans 1,171 138 (127 ) 32 1,128 Consumer loans 644 212 (166 ) 46 552 Total Personal Banking 1,893 395 (379 ) 136 1,741 Commercial Banking: Commercial real estate loans 2,422 (588 ) (187 ) 32 3,165 Commercial loans 907 354 — 1 552 Total Commercial Banking 3,329 (234 ) (187 ) 33 3,717 Total acquired loans 5,222 161 (566 ) 169 5,458 Total $ 63,246 5,538 (4,840 ) 1,767 60,781 The following table provides information related to the allowance for loan losses by portfolio segment and by class of financing receivable for the nine months ended September 30, 2017 (in thousands): Balance Current period provision Charge-offs Recoveries Balance Originated loans: Personal Banking: Residential mortgage loans $ 3,986 (278 ) (678 ) 286 4,656 Home equity loans 3,295 503 (803 ) 109 3,486 Consumer finance loans 4,876 6,610 (5,469 ) 290 3,445 Consumer loans 7,383 9,741 (7,912 ) 1,025 4,529 Total Personal Banking 19,540 16,576 (14,862 ) 1,710 16,116 Commercial Banking: Commercial real estate loans 20,174 (3,988 ) (498 ) 993 23,667 Commercial loans 11,131 (3,517 ) (1,858 ) 996 15,510 Total Commercial Banking 31,305 (7,505 ) (2,356 ) 1,989 39,177 Total originated loans 50,845 9,071 (17,218 ) 3,699 55,293 Acquired loans: Personal Banking: Residential mortgage loans 77 130 (199 ) 75 71 Home equity loans 748 512 (1,063 ) 252 1,047 Consumer loans 594 405 (689 ) 225 653 Total Personal Banking 1,419 1,047 (1,951 ) 552 1,771 Commercial Banking: Commercial real estate loans 3,301 1,832 (2,206 ) 667 3,008 Commercial loans 1,362 1,276 (847 ) 66 867 Total Commercial Banking 4,663 3,108 (3,053 ) 733 3,875 Total acquired loans 6,082 4,155 (5,004 ) 1,285 5,646 Total $ 56,927 13,226 (22,222 ) 4,984 60,939 The following table provides information related to the allowance for loan losses by portfolio segment and by class of financing receivable for the nine months ended September 30, 2016 (in thousands): Balance Current period provision Charge-offs Recoveries Balance Originated loans: Personal banking: Residential mortgage loans $ 4,002 1,612 (2,559 ) 257 4,692 Home equity loans 3,519 253 (898 ) 223 3,941 Consumer finance loans 3,429 2,163 (2,321 ) 312 3,275 Consumer loans 5,667 5,205 (4,587 ) 836 4,213 Total personal banking 16,617 9,233 (10,365 ) 1,628 16,121 Commercial banking: Commercial real estate loans 24,530 (8,756 ) (2,103 ) 3,041 32,348 Commercial loans 16,877 5,008 (1,704 ) 1,072 12,501 Total commercial banking 41,407 (3,748 ) (3,807 ) 4,113 44,849 Total originated loans 58,024 5,485 (14,172 ) 5,741 60,970 Acquired loans: Personal banking: Residential mortgage loans 78 118 (211 ) 153 18 Home equity loans 1,171 2,093 (1,320 ) 297 101 Consumer loans 644 925 (528 ) 137 110 Total personal banking 1,893 3,136 (2,059 ) 587 229 Commercial banking: Commercial real estate loans 2,422 1,886 (1,314 ) 411 1,439 Commercial loans 907 890 (24 ) 7 34 Total commercial banking 3,329 2,776 (1,338 ) 418 1,473 Total acquired loans 5,222 5,912 (3,397 ) 1,005 1,702 Total $ 63,246 11,397 (17,569 ) 6,746 62,672 At September 30, 2017 , we expect to fully collect the carrying value of our purchased credit impaired loans and have determined that we can reasonably estimate their future cash flows including those loans that are 90 days or more delinquent. As a result, we do not consider our purchased credit impaired loans that are 90 days or more delinquent to be nonaccrual or impaired and continue to recognize interest income on these loans, including the loans’ accretable discount. The following table provides information related to the loan portfolio by portfolio segment and by class of financing receivable at September 30, 2017 (in thousands): Total loans receivable Allowance for loan losses Nonaccrual loans (1) Loans past due 90 days or more and still accruing (2) TDRs (3) Allowance related to TDRs Additional commitments to customers with loans classified as TDRs Personal Banking: Residential mortgage loans $ 2,743,226 4,063 13,195 — 7,807 782 — Home equity loans 1,313,435 4,043 7,699 146 1,781 451 4 Consumer finance loans 26,892 4,876 333 — — — — Consumer loans 647,028 7,977 4,108 252 — — — Total Personal Banking 4,730,581 20,959 25,335 398 9,588 1,233 4 Commercial Banking: Commercial real estate loans 2,398,886 23,475 39,721 — 22,173 1,926 252 Commercial loans 596,671 12,493 8,278 — 6,708 1,025 23 Total Commercial Banking 2,995,557 35,968 47,999 — 28,881 2,951 275 Total $ 7,726,138 56,927 73,334 398 38,469 4,184 279 (1) Includes $17.8 million of nonaccrual TDRs. (2) Represents loans 90 days past maturity and still accruing. (3) Includes $17.8 million of nonaccrual, and $20.7 million of accruing TDRs. The following table provides information related to the loan portfolio by portfolio segment and by class of financing receivable at December 31, 2016 (in thousands): Total loans receivable Allowance for loan losses Nonaccrual loans (1) Loans past due 90 days or more and still accruing (2) TDRs (3) Allowance related to TDRs Additional commitments to customers with loans classified as TDRs Personal Banking: Residential mortgage loans $ 2,698,166 4,727 18,264 — 7,299 708 — Home equity loans 1,345,370 4,533 7,865 — 1,813 450 4 Consumer finance loans 48,981 3,445 743 — — — — Consumer loans 593,980 5,182 4,366 85 — — — Total Personal Banking 4,686,497 17,887 31,238 85 9,112 1,158 4 Commercial Banking: Commercial real estate loans 2,342,089 26,675 38,724 564 24,483 2,072 417 Commercial loans 528,761 16,377 9,574 — 9,331 1,360 17 Total Commercial Banking 2,870,850 43,052 48,298 564 33,814 3,432 434 Total $ 7,557,347 60,939 79,536 649 42,926 4,590 438 (1) Includes $16.3 million of nonaccrual TDRs. (2) Represents loans 90 days past maturity and still accruing. (3) Includes $16.3 million of nonaccrual, and $26.6 million of accruing TDRs. The following table provides information related to the composition of originated impaired loans by portfolio segment and by class of financing receivable at and for the nine months ended September 30, 2017 (in thousands): Nonaccrual loans 90 or more days delinquent Nonaccrual loans less than 90 days delinquent Loans less than 90 days delinquent reviewed for impairment TDRs less than 90 days delinquent not included elsewhere Total impaired loans Average recorded investment in impaired loans Interest income recognized on impaired loans Personal Banking: Residential mortgage loans $ 11,785 1,410 — 6,894 20,089 21,521 706 Home equity loans 6,295 1,404 — 1,436 9,135 8,878 320 Consumer finance loans 332 1 — — 333 428 15 Consumer loans 3,244 864 — — 4,108 3,887 132 Total Personal Banking 21,656 3,679 — 8,330 33,665 34,714 1,173 Commercial Banking: Commercial real estate loans 22,583 17,138 4,707 4,804 49,232 52,813 1,381 Commercial loans 4,177 4,101 943 2,447 11,668 12,402 544 Total Commercial Banking 26,760 21,239 5,650 7,251 60,900 65,215 1,925 Total $ 48,416 24,918 5,650 15,581 94,565 99,929 3,098 The following table provides information related to the composition of originated impaired loans by portfolio segment and by class of financing receivable at and for the year ended December 31, 2016 (in thousands): Nonaccrual loans 90 or more days delinquent Nonaccrual loans less than 90 days delinquent Loans less than 90 days delinquent reviewed for impairment TDRs less than 90 days delinquent not included elsewhere Total impaired loans Average recorded investment in impaired loans Interest income recognized on impaired loans Personal Banking: Residential mortgage loans $ 13,169 5,095 — 5,929 24,193 24,483 1,079 Home equity loans 5,552 2,313 — 1,439 9,304 9,234 496 Consumer finance loans 743 — — — 743 772 35 Consumer loans 3,080 1,286 — — 4,366 2,931 131 Total Personal Banking 22,544 8,694 — 7,368 38,606 37,420 1,741 Commercial Banking: Commercial real estate loans 19,264 19,460 3,622 11,582 53,928 64,350 2,864 Commercial loans 3,373 6,201 2,837 3,116 15,527 16,905 991 Total Commercial Banking 22,637 25,661 6,459 14,698 69,455 81,255 3,855 Total $ 45,181 34,355 6,459 22,066 108,061 118,675 5,596 The following table provides information related to the evaluation of impaired loans by portfolio segment and by class of financing receivable at September 30, 2017 (in thousands): Loans collectively evaluated for impairment Loans individually evaluated for impairment Loans individually evaluated for impairment for which there is a related impairment reserve Related impairment reserve Loans individually evaluated for impairment for which there is no related reserve Personal Banking: Residential mortgage loans $ 2,734,753 8,473 8,473 783 — Home equity loans 1,311,654 1,781 1,781 451 — Consumer finance loans 26,892 — — — — Consumer loans 646,933 95 95 23 — Total Personal Banking 4,720,232 10,349 10,349 1,257 — Commercial Banking: Commercial real estate loans 2,370,814 28,072 25,223 3,028 2,849 Commercial loans 587,013 9,658 9,150 1,530 508 Total Commercial Banking 2,957,827 37,730 34,373 4,558 3,357 Total $ 7,678,059 48,079 44,722 5,815 3,357 The following table provides information related to the evaluation of impaired loans by portfolio segment and by class of financing receivable at December 31, 2016 (in thousands): Loans collectively evaluated for impairment Loans individually evaluated for impairment Loans individually evaluated for impairment for which there is a related impairment reserve Related impairment reserve Loans individually evaluated for impairment for which there is no related reserve Personal Banking: Residential mortgage loans $ 2,689,886 8,280 8,280 709 — Home equity loans 1,343,556 1,814 1,814 450 — Consumer finance loans 48,981 — — — — Consumer loans 593,854 126 126 29 — Total Personal Banking 4,676,277 10,220 10,220 1,188 — Commercial Banking: Commercial real estate loans 2,309,186 32,903 27,594 3,545 5,309 Commercial loans 518,449 10,312 10,242 1,390 70 Total Commercial Banking 2,827,635 43,215 37,836 4,935 5,379 Total $ 7,503,912 53,435 48,056 6,123 5,379 Our loan portfolios include loans that have been modified in a troubled debt restructuring ("TDR"), where concessions have been granted to borrowers who have experienced financial difficulties. These concessions typically result from our loss mitigation activities and could include: extending the note’s maturity date, permitting interest-only payments, reducing the interest rate to a rate lower than current market rates for new debt with similar risk, reducing the principal payment, principal forbearance or other actions. These concessions are applicable to all loan segments and classes. Certain TDRs are classified as nonperforming at the time of restructuring and may be returned to performing status after considering the borrower’s sustained repayment performance for a period of at least nine months. When we modify loans in a TDR, we evaluate any possible impairment similar to other impaired loans based on the present value of expected future cash flows, discounted at the contractual interest rate of the original loan agreement, the loan’s observable market price or the current fair value of the collateral, less selling costs, for collateral dependent loans. If we determine that the value of the modified loan is less than the recorded investment in the loan (net of previous charge-offs, deferred loan fees or costs and unamortized premium or discount), impairment is recognized through an allowance estimate or a charge-off to the allowance. In periods subsequent to modification, we evaluate all TDRs, including those that have payment defaults, for possible impairment, using ASC 310-10. As a result, loans modified in a TDR may have the financial effect of increasing the specific allowance associated with the loan. Loans modified in a TDR are closely monitored for delinquency as an early indicator of possible future default. If loans modified in a TDR subsequently default, we evaluate the loan for possible further impairment. The allowance may be increased, adjustments may be made in the allocation of the allowance, partial charge-offs may be taken to further write-down the carrying value of the loan, or the loan may be charged-off completely. The following table provides a roll forward of troubled debt restructurings for the periods indicated (dollars in thousands): For the quarters ended September 30, 2017 2016 Number of contracts Amount Number of contracts Amount Beginning TDR balance: 203 $ 41,860 230 $ 49,113 New TDRs 6 546 5 245 Re-modified TDRs 2 265 1 799 Net paydowns (987 ) (1,781 ) Charge-offs: Residential mortgage loans — — — — Home equity loans — — — — Commercial real estate loans 2 (2,498 ) — — Commercial loans — — 1 (99 ) Paid-off loans: Residential mortgage loans — — 3 (143 ) Home equity loans 3 (30 ) 2 (264 ) Commercial real estate loans 1 (564 ) 8 (1,022 ) Commercial loans 2 (123 ) 3 (253 ) Ending TDR balance: 201 $ 38,469 218 $ 46,595 Accruing TDRs $ 20,660 $ 29,221 Non-accrual TDRs 17,809 17,374 The following table provides a roll forward of troubled debt restructuring for the periods indicated (dollars in thousands): For the nine months ended September 30, 2017 2016 Number of contracts Amount Number of contracts Amount Beginning TDR balance: 225 $ 42,926 227 $ 51,115 New TDRs 13 4,685 23 5,256 Re-modified TDRs 3 710 5 1,862 Net paydowns (3,668 ) (4,685 ) Charge-offs: Residential mortgage loans — — — — Home equity loans — — — — Commercial real estate loans 2 (2,498 ) — — Commercial loans 6 (259 ) 2 (142 ) Paid-off loans: Residential mortgage loans — — 3 (143 ) Home equity loans 8 (62 ) 5 (496 ) Commercial real estate loans 11 (1,109 ) 16 (5,584 ) Commercial loans 10 (2,256 ) 6 (588 ) Ending TDR balance: 201 $ 38,469 218 $ 46,595 Accruing TDRs $ 20,660 $ 29,221 Non-accrual TDRs 17,809 17,374 The following table provides information related to troubled debt restructurings (including re-modified TDRs) by portfolio segment and by class of financing receivable during the periods indicated (dollars in thousands): For the quarter ended For the nine months ended September 30, 2017 Number of contracts Recorded investment at the time of modification Current recorded investment Current allowance Number of contracts Recorded investment at the time of modification Current recorded investment Current allowance Troubled debt restructurings: Personal Banking: Residential mortgage loans 2 $ 403 402 40 5 $ 1,297 1,276 128 Home equity loans 2 122 119 30 2 122 119 30 Total Personal Banking 4 525 521 70 7 1,419 1,395 158 Commercial Banking: Commercial real estate loans 2 114 116 13 6 3,600 3,282 285 Commercial loans 2 172 170 71 3 376 352 84 Total Commercial Banking 4 286 286 84 9 3,976 3,634 369 Total 8 $ 811 807 154 16 $ 5,395 5,029 527 Troubled debt restructurings modified within the previous twelve months that have subsequently defaulted: Personal Banking: Residential mortgage loans — $ — — — — $ — — — Home equity loans — — — — — — — — Total Personal Banking — — — — — — — — Commercial Banking Commercial real estate loans 1 90 90 11 1 90 90 11 Commercial loans 1 150 150 70 1 150 150 70 Total Commercial Banking 2 240 240 81 2 240 240 81 Total 2 $ 240 240 81 2 $ 240 240 81 The following table provides information related to troubled debt restructurings (including re-modified TDRs) by portfolio segment and by class of financing receivable during the periods indicated (dollars in thousands): For the quarter ended For the nine months ended September 30, 2016 Number of contracts Recorded investment at the time of modification Current recorded investment Current allowance Number of contracts Recorded investment at the time of modification Current recorded investment Current allowance Troubled debt restructurings: Personal Banking: Residential mortgage loans 1 $ 9 8 1 6 $ 1,041 1,031 105 Home equity loans 1 3 3 1 6 284 281 60 Total Personal Banking 2 12 11 2 12 1,325 1,312 165 Commercial Banking: Commercial real estate loans 1 154 153 11 5 2,250 2,218 295 Commercial loans 3 878 877 64 11 3,543 2,591 632 Total Commercial Banking 4 1,032 1,030 75 16 5,793 4,809 927 Total 6 $ 1,044 1,041 77 28 $ 7,118 6,121 1,092 Troubled debt restructurings modified within the previous twelve months that have subsequently defaulted: Personal Banking: Residential mortgage loans — $ — — — — $ — — — Home equity loans — — — — — — — — Total Personal Banking — — — — — — — — Commercial Banking: Commercial real estate loans 1 6,256 6,113 893 1 6,256 6,113 893 Commercial loans — — — — — — — — Total Commercial Banking 1 6,256 6,113 893 1 6,256 6,113 893 Total 1 $ 6,256 6,113 893 1 $ 6,256 6,113 893 The following table provides information as of September 30, 2017 for troubled debt restructuring (including re-modified TDRs) by type of modification, by portfolio segment and class of financing receivable for modifications during the quarter ended September 30, 2017 (dollars in thousands): Type of modification Number of contracts Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans 2 $ 250 — — 152 402 Home equity loans 2 119 — — — 119 Total Personal Banking 4 369 — — 152 521 Commercial Banking: Commercial real estate loans 2 — — 116 — 116 Commercial loans 2 — — 170 — 170 Total Commercial Banking 4 — — 286 — 286 Total 8 $ 369 — 286 152 807 The following table provides information as of September 30, 2016 for troubled debt restructuring (including re-modified TDRs) by type of modification, by portfolio segment and class of financing receivable for modifications during the quarter ended September 30, 2016 (dollars in thousands): Type of modification Number of contracts Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans 1 $ — — 8 — 8 Home equity loans 1 — — 3 — 3 Total Personal Banking 2 — — 11 — 11 Commercial Banking: Commercial real estate loans 1 — — 153 — 153 Commercial loans 3 — 799 78 — 877 Total Commercial Banking 4 — 799 231 — 1,030 Total 6 $ — 799 242 — 1,041 The following table provides information as of September 30, 2017 for troubled debt restructuring (including re-modified TDRs) by type of modification, by portfolio segment and class of financing receivable for modifications during the nine months ended September 30, 2017 (dollars in thousands): Type of modification Number of contracts Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans 5 $ 360 — — 916 1,276 Home equity loans 2 119 — — — 119 Total Personal Banking 7 479 — — 916 1,395 Commercial Banking: Commercial real estate loans 6 — 2,710 572 — 3,282 Commercial loans 3 — — 352 — 352 Total Commercial Banking 9 — 2,710 924 — 3,634 Total 16 $ 479 2,710 924 916 5,029 The following table provides information as of September 30, 2016 for troubled debt restructurings (including re-modified TDRs) by type of modification, by portfolio segment and class of financing receivable for modifications during the nine months ended September 30, 2016 (dollars in thousands): Type of modification Number of contracts Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans 6 $ 361 — 622 48 1,031 Home equity loans 6 121 — 3 157 281 Total Personal Banking 12 482 — 625 205 1,312 Commercial Banking: Commercial real estate loans 5 — 429 535 1,254 2,218 Commercial loans 11 — 799 1,042 750 2,591 Total Commercial Banking 16 — 1,228 1,577 2,004 4,809 Total 28 $ 482 1,228 2,202 2,209 6,121 The following table provides information related to re-modified troubled debt restructuring by portfolio segment and by class of financing receivable for the quarter ended September 30, 2017 (dollars in thousands): Type of re-modification Number of re-modified TDRs Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans 1 $ 250 — — — 250 Home equity loans 1 13 — — — 13 Total Personal Banking 2 263 — — — 263 Commercial Banking: Commercial real estate loans — — — — — — Commercial loans — — — — — — Total Commercial Banking — — — — — — Total 2 $ 263 — — — 263 The following table provides information related to re-modified troubled debt restructurings by portfolio segment and by class of financing receivable for the quarter ended September 30, 2016 (dollars in thousands): Type of re-modification Number of re-modified TDRs Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans — $ — — — — — Home equity loans — — — — — — Total Personal Banking — — — — — — Commercial Banking: Commercial real estate loans — — — — — — Commercial loans 1 — 799 — — 799 Total Commercial Banking 1 — 799 — — 799 Total 1 $ — 799 — — 799 The following table provides information related to re-modified troubled debt restructurings by portfolio segment and by class of financing receivable for the nine months ended September 30, 2017 (dollars in thousands): Type of re-modification Number of re-modified TDRs Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans 2 $ 250 — — 430 680 Home equity loans 1 13 — — — 13 Total Personal Banking 3 263 — — 430 693 Commercial Banking: Commercial real estate loans — — — — — — Commercial loans — — — — — — Total Commercial Banking — — — — — — Total 3 $ 263 — — 430 693 The following table provides information related to re-modified troubled debt restructurings by portfolio segment and by class of financing receivable for the nine months ended September 30, 2016 (dollars in thousands): Type of re-modification Number of re-modified TDRs Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans — $ — — — — — Home equity loans — — — — — — Total Personal Banking — — — — — — Commercial Banking: Commercial real estate loans 1 — — — 182 182 Commercial loans 4 — 1,662 — — 1,662 Total Commercial Banking 5 — 1,662 — 182 1,844 Total 5 $ — 1,662 — 182 1,844 The following table provides information related to loan payment delinquencies at September 30, 2017 (in thousands): 30-59 Days delinquent 60-89 Days delinquent 90 Days or greater delinquent Total delinquency Current Total loans receivable 90 Days or greater delinquent and accruing (1) Originated loans: Personal Banking: Residential mortgage loans $ 2,771 6,133 11,315 20,219 2,603,544 2,623,763 — Home equity loans 6,636 2,219 5,158 14,013 1,031,139 1,045,152 — Consumer finance loans 3,065 2,190 332 5,587 21,305 26,892 — Consumer loans 8,248 2,963 2,939 14,150 520,468 534,618 — Total Personal Banking 20,720 13,505 19,744 53,969 4,176,456 4,230,425 — Commercial Banking: Commercial real estate loans 3,586 7,290 18,069 28,945 2,060,438 2,089,383 — Commercial loans 271 2 3,288 3,561 524,670 528,231 — Total Commercial Banking 3,857 7,292 21,357 32,506 2,585,108 2,617,614 — Total originated loans 24,577 20,797 41,101 86,475 6,761,564 6,848,039 — Acquired loans: Personal Banking: Residential mortgage loans — 1,063 875 1,938 117,525 119,463 405 Home equity loans 694 171 1,239 2,104 266,179 268,283 102 Consumer loans 1,262 320 315 1,897 110,513 112,410 10 Total Personal Banking 1,956 1,554 2,429 5,939 494,217 500,156 517 Commercial Banking: Commercial real estate loans 2,167 376 5,241 7,784 301,719 309,503 727 Commercial loans 475 194 889 1,558 66,882 68,440 — Total Commercial Banking 2,642 570 6,130 9,342 368,601 377,943 727 Total acquired loans 4,598 2,124 8,559 15,281 862,818 878,099 1,244 Total loans $ 29,175 22,921 49,660 101,756 7,624,382 7,726,138 1,244 (1) Represents acquired loans that were originally recorded at fair value upon acquisition. These loans are considered to be accruing because we can reasonably estimate future cash flows on and expect to fully collect the carrying value of these loans. Therefore, we are accreting the difference between the carrying value and their expected cash flows into interest income. The following table provides information related to loan payment delinquencies at December 31, 2016 (in thousands): 30-59 Days delinquent 60-89 Days delinquent 90 Days or greater delinquent Total delinquency Current Total loans receivable 90 Days or Originated loans: Personal Banking: Residential mortgage loans $ 26,212 5,806 12,792 44,810 2,536,443 2,564,655 — Home equity loans 5,785 1,305 4,783 11,873 1,014,442 1,042,913 — Consumer finance loans 1,255 766 743 2,764 46,217 48,981 — Consumer loans 7,343 2,438 2,775 12,556 415,508 428,064 — Total Personal Banking 40,595 10,315 21,093 72,003 4,012,610 4,084,613 — Commercial Banking: Commercial real estate loans 7,674 3,674 16,508 27,856 1,944,227 1,972,083 — Commercial loans 1,067 1,957 3,107 6,131 449,244 455,375 — Total Commercial Banking 8,741 5,631 19,615 33,987 2,393,471 2,427,458 — Total originated loan 49,336 15,946 40,708 105,990 6,406,081 6,512,071 — Acquired loans: Personal Banking: Residential mortgage loans 1,174 421 829 2,424 131,087 133,511 452 Home equity loans 1,020 258 973 2,251 300,206 302,457 204 Consumer loans 1,270 405 320 1,995 163,921 165,916 15 Total Personal Banking 3,464 1,084 2,122 6,670 595,214 601,884 671 Commercial Banking: Commercial real estate loans 2,703 821 4,762 8,286 361,720 370,006 2,006 Commercial loans 111 124 413 648 72,738 73,386 147 Total Commercial Banking 2,814 945 5,175 8,934 434,458 443,392 2,153 Total acquired loan 6,278 2,029 7,297 15,604 1,029,672 1,045,276 2,824 Total $ 55,614 17,975 48,005 121,594 7,435,753 7,557,347 2,824 (1) Represents acquired loans that were originally recorded at fair value upon acquisition. These loans are considered to be accruing because we can reasonably estimate future cash flows on and expect to fully collect the carrying value of these loans. Therefore, we are accreting the difference between the carrying value and their expected cash flows into interest income. Credit quality indicators : We categorize loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. We analyze loans individually by classifying the loans by credit risk. Credit relationships greater than or equal to $1.0 million classified as special mention or substandard are reviewed quarterly for deterioration or improvement to determine if the loan is appropriately classified. We use the following definitions for risk ratings other than pass: Special mention — Loans designated as special mention have specific, well-defined risk issues, which create a high level of unc

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The following table provides information for intangible assets subject to amortization as of the dates indicated (in thousands): September 30, December 31, Amortizable intangible assets: Core deposit intangibles — gross $ 63,685 37,953 Acquisitions — 25,732 Less: accumulated amortization (38,725 ) (34,378 ) Core deposit intangibles — net 24,960 29,307 Customer and Contract intangible assets — gross 10,474 8,496 Acquisitions — 1,978 Less: accumulated amortization (8,190 ) (7,348 ) Customer and Contract intangible assets — net $ 2,284 3,126 The following table shows the actual aggregate amortization expense for the quarters and nine months ended September 30, 2017 and 2016 , as well as the estimated aggregate amortization expense, based upon current levels of intangible assets, for the current fiscal year and each of the five succeeding fiscal years (in thousands): For the quarter ended September 30, 2017 $ 1,691 For the quarter ended September 30, 2016 1,068 For the nine months ended September 30, 2017 5,189 For the nine months ended September 30, 2016 2,453 For the year ending December 31, 2017 6,764 For the year ending December 31, 2018 5,848 For the year ending December 31, 2019 4,933 For the year ending December 31, 2020 4,017 For the year ending December 31, 2021 3,188 For the year ending December 31, 2022 2,456 The following table provides information for the changes in the carrying amount of goodwill (in thousands): Total Balance at December 31, 2015 261,736 Goodwill acquired 45,684 Balance at December 31, 2016 307,420 Goodwill acquired — Impairment losses — Balance at September 30, 2017 307,420 We performed our annual goodwill impairment test as of June 30, 2017 using ASU 2011-08, Intangibles-Goodwill and Other (Topic 350): Testing Goodwill for Impairment ("Step 0") and concluded that goodwill was not impaired.

Guarantees

Guarantees	9 Months Ended
	Sep. 30, 2017
Guarantees [Abstract]
Guarantees	Guarantees We issue standby letters of credit in the normal course of business. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Standby letters of credit generally are contingent upon the failure of the customer to perform according to the terms of the underlying contract with the third party. We are required to perform under a standby letter of credit when drawn upon by the guaranteed third party in the case of nonperformance by our customer. The credit risk associated with standby letters of credit is essentially the same as that involved in extending loans to customers and is subject to normal loan underwriting procedures. Collateral may be obtained based on management’s credit assessment of the customer. At September 30, 2017 , the maximum potential amount of future payments we could be required to make under these non-recourse standby letters of credit was $17.7 million , of which $17.2 million is fully collateralized. At September 30, 2017 , we had a liability, which represents deferred income, of $137,000 related to the standby letters of credit.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per common share (EPS) is computed by dividing net income available to common shareholders by the weighted-average number of common shares outstanding for the period, without considering any dilutive items. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the Company. All stock options outstanding during the quarter ended September 30, 2017 and 2016, were included in the computation of diluted earnings per share because the options’ exercise price was less than the average market price of the common shares of $16.26 and $15.19 , respectively. All stock options outstanding during the nine months ended September 30, 2017 were included in the computation of diluted earnings per share because the options’ exercise price was less than the average market price of the common shares of $ 16.58 . Stock options to purchase 710,423 shares of common stock with a weighted average exercise price of $14.15 per share were outstanding during the nine months ended September 30, 2016 but were not included in the computation of diluted earnings per share because the options’ exercise price was greater than the average market price of the common shares of $14.02 . The computation of basic and diluted earnings per share follows (in thousands, except share data and per share amounts): Quarter ended Nine months ended 2017 2016 2017 2016 Reported net income $ 23,591 14,197 72,319 25,173 Weighted average common shares outstanding 101,163,534 99,602,535 100,921,322 99,224,565 Dilutive potential shares due to effect of stock options 1,400,942 1,465,710 1,617,020 1,008,942 Total weighted average common shares and dilutive potential shares 102,564,476 101,068,245 102,538,342 100,233,507 Basic earnings per share: $ 0.23 0.14 0.72 0.25 Diluted earnings per share: $ 0.23 0.14 0.71 0.25

Pension and Other Post-retireme

Pension and Other Post-retirement Benefits	9 Months Ended
	Sep. 30, 2017
Retirement Benefits [Abstract]
Pension and Other Post-retirement Benefits	Pension and Other Post-retirement Benefits The following table sets forth the net periodic costs for the defined benefit pension plans and post retirement healthcare plans for the periods indicated (in thousands): Components of net periodic benefit cost Quarter ended September 30, Pension benefits Other post-retirement benefits 2017 2016 2017 2016 Service cost $ 1,537 1,374 — — Interest cost 1,719 1,695 17 18 Expected return on plan assets (2,628 ) (2,474 ) — — Amortization of prior service cost (580 ) (581 ) — — Amortization of the net loss 928 927 27 22 Net periodic cost $ 976 941 44 40 Nine Months Ended September 30, 2016 Pension benefits Other post-retirement benefits 2017 2016 2017 2016 Service cost $ 4,612 4,122 — — Interest cost 5,159 5,087 51 53 Expected return on plan assets (7,884 ) (7,423 ) — — Amortization of prior service cost (1,742 ) (1,742 ) — — Amortization of the net loss 2,783 2,782 81 67 Net periodic cost $ 2,928 2,826 132 120 We anticipate making a contribution to our defined benefit pension plan of $4.0 million to $5.0 million during the year ending December 31, 2017 .

Disclosures About Fair Value of

Disclosures About Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Disclosures About Fair Value of Financial Instruments	Disclosures About Fair Value of Financial Instruments Fair value information about financial instruments, whether or not recognized in the consolidated statement of financial condition, is required to be disclosed. These requirements exclude certain financial instruments and all nonfinancial instruments. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of the Company. Financial assets and liabilities recognized or disclosed at fair value on a recurring basis and certain financial assets and liabilities on a non-recurring basis are accounted for using a three-level hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. This hierarchy gives the highest priority to quoted prices with readily available independent data in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable market inputs (Level 3). When various inputs for measurement fall within different levels of the fair value hierarchy, the lowest level input that has a significant impact on fair value measurement is used. Financial assets and liabilities are categorized based upon the following characteristics or inputs to the valuation techniques: • Level 1 — Financial assets and liabilities for which inputs are observable and are obtained from reliable quoted prices for identical assets or liabilities in actively traded markets. This is the most reliable fair value measurement and includes, for example, active exchange-traded equity securities. • Level 2 — Financial assets and liabilities for which values are based on quoted prices in markets that are not active or for which values are based on similar assets or liabilities that are actively traded. Level 2 also includes pricing models in which the inputs are corroborated by market data, for example, matrix pricing. • Level 3 — Financial assets and liabilities for which values are based on prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement. Level 3 inputs include the following: • Quotes from brokers or other external sources that are not considered binding; • Quotes from brokers or other external sources where it cannot be determined that market participants would in fact transact for the asset or liability at the quoted price; • Quotes and other information from brokers or other external sources where the inputs are not deemed observable. We are responsible for the valuation process and as part of this process may use data from outside sources in establishing fair value. We perform due diligence to understand the inputs used or how the data was calculated or derived. We also corroborate the reasonableness of external inputs in the valuation process. The carrying amounts reported in the consolidated statement of financial condition approximate fair value for the following financial instruments: cash on hand, interest-earning deposits in other institutions, federal funds sold and other short-term investments, accrued interest receivable, accrued interest payable, and marketable securities available-for-sale. Marketable Securities Where available, market values are based on quoted market prices, dealer quotes, and prices obtained from independent pricing services. Debt securities - available for sale - Generally, debt securities are valued using pricing for similar securities, recently executed transactions and other pricing models utilizing observable inputs. The valuation for most debt securities is classified as Level 2. Securities within Level 2 include corporate bonds, municipal bonds, mortgage-backed securities and US government obligations. Certain corporate debt securities do not have an active market and as such the broker pricing received uses alternative methods. The fair value of these corporate debt securities is determined by using a discounted cash flow model using market assumptions, which generally include cash flow, collateral and other market assumptions. As such, these securities are included herein as Level 3 assets. Equity securities - available for sale - Level 1 securities include publicly traded securities valued using quoted market prices. We consider the financial condition of the issuer to determine if the securities have indicators of impairment. Debt securities - held to maturity - The fair value of debt securities held to maturity is determined in the same manner as debt securities available for sale. Loans Held for Sale The estimated fair value of loans held for sale is based on market bids obtained from potential buyers. Loans Held for Investment Loans with comparable characteristics including collateral and re-pricing structures are segregated for valuation purposes. Characteristics include remaining term, coupon interest, and estimated prepayment speeds. Delinquent loans are separately evaluated given the impact delinquency has on the projected future cash flow of the loan and the approximate discount or market rate. Each loan pool is separately valued utilizing a discounted cash flow analysis. Projected monthly cash flows are discounted to present value using a market rate for comparable loans, which is not considered an exit price. Federal Home Loan Bank (“FHLB”) Stock Due to the restrictions placed on the transferability of FHLB stock it is not practical to determine the fair value. Deposit Liabilities The estimated fair value of deposits with no stated maturity, which includes demand deposits, money market, and other savings accounts, is the amount payable on demand. Although market premiums paid for depository institutions reflect an additional value for these low-cost deposits, adjusting fair value for any value expected to be derived from retaining those deposits for a future period of time or from the benefit that results from the ability to fund interest-earning assets with these deposit liabilities is prohibited. The fair value estimates of deposit liabilities do not include the benefit that results from the low-cost funding provided by these deposits compared to the cost of borrowing funds in the market. Fair values for time deposits are estimated using a discounted cash flow calculation that applies contractual cost currently being offered in the existing portfolio to current market rates being offered locally for deposits of similar remaining maturities. The valuation adjustment for the portfolio consists of the present value of the difference of these two cash flows, discounted at the assumed market rate of the corresponding maturity. Borrowed Funds Fixed rate advances are valued by comparing their contractual cost to the prevailing market cost. The carrying amount of collateralized borrowings approximates the fair value. Junior Subordinated Debentures The fair value of junior subordinated debentures is calculated using the discounted cash flows at the prevailing rate of interest. Cash flow hedges — Interest rate swap agreements (“swaps”) The fair value of the swaps is the amount we would expect to pay to terminate the agreements and is based upon the present value of the expected future cash flows using the LIBOR swap curve, the basis for the underlying interest rate. Off-Balance Sheet Financial Instruments These financial instruments generally are not sold or traded, and estimated fair values are not readily available. However, the fair value of commitments to extend credit and standby letters of credit is estimated using the fees currently charged to enter into similar agreements. Commitments to extend credit are generally short-term in nature and, if drawn upon, are issued under current market terms. At September 30, 2017 and December 31, 2016 , there was no significant unrealized appreciation or depreciation on these financial instruments. The following table sets forth the carrying amount and estimated fair value of our financial instruments included in the consolidated statement of financial condition at September 30, 2017 (in thousands): Carrying amount Estimated fair value Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 165,676 165,676 165,676 — — Securities available-for-sale 869,481 869,481 949 857,873 10,659 Securities held-to-maturity 31,961 32,282 — 32,282 — Loans receivable, net 7,669,211 7,746,906 1,382 — 7,745,524 Accrued interest receivable 22,802 22,802 22,802 — — FHLB Stock 7,984 7,984 — — — Total financial assets $ 8,767,115 8,845,131 190,809 890,155 7,756,183 Financial liabilities: Savings and checking deposits $ 6,506,184 6,506,184 6,506,184 — — Time deposits 1,435,861 1,455,485 — — 1,455,485 Borrowed funds 115,388 115,388 115,388 — — Junior subordinated debentures 111,213 112,954 — — 112,954 Cash flow hedges - swaps 1,538 1,538 — 1,538 — Accrued interest payable 518 518 518 — — Total financial liabilities $ 8,170,702 8,192,067 6,622,090 1,538 1,568,439 The following table sets forth the carrying amount and estimated fair value of our financial instruments included in the consolidated statement of financial condition at December 31, 2016 (in thousands): Carrying amount Estimated fair value Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 389,867 389,867 389,867 — — Securities available-for-sale 826,200 826,200 4,440 812,394 9,366 Securities held-to-maturity 19,978 20,426 — 20,426 — Loans receivable, net 7,496,408 7,878,815 9,625 — 7,869,190 Assets held-for-sale 146,660 146,660 146,660 — — Accrued interest receivable 21,699 21,699 21,699 — — FHLB Stock 7,390 7,390 — — — Total financial assets $ 8,908,202 9,291,057 572,291 832,820 7,878,556 Financial liabilities: Savings and checking accounts $ 6,341,735 6,341,735 6,341,735 — — Time deposits 1,540,586 1,626,434 — — 1,626,434 Liabilities held-for-sale 215,649 215,649 215,649 — — Borrowed funds 142,899 142,899 142,899 — — Junior subordinated debentures 111,213 113,313 — — 113,313 Cash flow hedges - swaps 2,736 2,736 — 2,736 — Accrued interest payable 643 643 643 — — Total financial liabilities $ 8,355,461 8,443,409 6,700,926 2,736 1,739,747 Fair value estimates are made at a point-in-time, based on relevant market data and information about the instrument. The methods and assumptions detailed above were used in estimating the fair value of financial instruments at both September 30, 2017 and December 31, 2016 . There were no transfers of financial instruments between Level 1 and Level 2 during the nine months ended September 30, 2017 . The following table represents assets and liabilities measured at fair value on a recurring basis at September 30, 2017 (in thousands): Level 1 Level 2 Level 3 Total assets at fair value Equity securities $ 949 — — 949 Debt securities: U.S. government and agencies — 2 — 2 Government sponsored enterprises — 241,599 — 241,599 States and political subdivisions — 53,214 — 53,214 Corporate — 8,019 10,659 18,678 Total debt securities — 302,834 10,659 313,493 Residential mortgage-backed securities: GNMA — 28,388 — 28,388 FNMA — 82,023 — 82,023 FHLMC — 68,234 — 68,234 Non-agency — 560 — 560 Collateralized mortgage obligations: GNMA — 5,152 — 5,152 FNMA — 202,459 — 202,459 FHLMC — 168,182 — 168,182 SBA — — — — Non-agency — 41 — 41 Total mortgage-backed securities — 555,039 — 555,039 Interest rate swaps — (1,538 ) — (1,538 ) Total assets and liabilities $ 949 856,335 10,659 867,943 The following table represents assets and liabilities measured at fair value on a recurring basis at December 31, 2016 (in thousands): Level 1 Level 2 Level 3 Total assets at fair value Equity securities $ 4,440 — — 4,440 Debt securities: U.S. government and agencies — 6 — 6 Government sponsored enterprises — 294,170 — 294,170 States and political subdivisions — 63,070 — 63,070 Corporate — 7,614 9,366 16,980 Total debt securities — 364,860 9,366 374,226 Residential mortgage-backed securities: GNMA — 30,883 — 30,883 FNMA — 106,578 — 106,578 FHLMC — 82,115 — 82,115 Non-agency — 579 — 579 Collateralized mortgage obligations: GNMA — 6,287 — 6,287 FNMA — 95,186 — 95,186 FHLMC — 119,197 — 119,197 SBA — 6,608 — 6,608 Non-agency — 101 — 101 Total mortgage-backed securities — 447,534 — 447,534 Interest rate swaps — (2,736 ) — (2,736 ) Total assets and liabilities $ 4,440 809,658 9,366 823,464 The table below presents a reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the periods indicated (in thousands): Quarter ended Nine Months Ended September 30, September 30, September 30, September 30, Beginning balance $ 10,638 8,719 9,366 8,955 Net change in unrealized appreciation: Included in net income as OTTI — — — Included in other comprehensive income 21 510 1,293 274 Purchases — — — — Sales — — — — Transfers in to Level 3 — — — — Transfers out of Level 3 — — — — Ending balance $ 10,659 9,229 10,659 9,229 Certain assets and liabilities are measured at fair value on a nonrecurring basis after initial recognition such as loans measured for impairment and real estate owned. The following table represents the fair value measurement for nonrecurring assets at September 30, 2017 (in thousands): Level 1 Level 2 Level 3 Total assets at fair value Loans measured for impairment $ — — 38,907 38,907 Real estate owned — — 5,462 5,462 Total assets $ — — 44,369 44,369 Certain assets and liabilities are measured at fair value on a nonrecurring basis after initial recognition such as loans measured for impairment, mortgage servicing rights, and real estate owned. The following table represents the fair value measurement for nonrecurring assets at December 31, 2016 (in thousands): Level 1 Level 2 Level 3 Total assets at fair value Loans measured for impairment $ — — 41,933 41,933 Mortgage loan servicing — — 246 246 Real estate owned — — 4,889 4,889 Total assets $ — — 47,068 47,068 Impaired loans — A loan is considered to be impaired as described in Note 1 of the Notes to Consolidated Financial Statements in Item 8 of Part II of our 2016 Annual Report on Form 10-K. We classify loans individually evaluated for impairment that require a specific reserve as nonrecurring Level 3. Mortgage servicing rights - Mortgage servicing rights represent the value of servicing residential mortgage loans, when the mortgage loans have been sold into the secondary market and the associated servicing has been retained. The value is determined through a discounted cash flow analysis, which uses interest rates, prepayment speeds and delinquency rate assumptions as inputs. All of these assumptions require a significant degree of management judgment. Servicing rights and the related mortgage loans are segregated into categories or homogeneous pools based upon common characteristics. Adjustments are only made when the estimated discounted future cash flows are less than the carrying value, as determined by individual pool. As such, mortgage servicing rights are classified as nonrecurring Level 3. Real Estate Owned — Real estate owned is comprised of property acquired through foreclosure or voluntarily conveyed by delinquent borrowers. These assets are recorded on the date acquired at the lower of the related loan balance or fair value, less estimated disposition costs, with the fair value being determined by appraisal. Subsequently, foreclosed assets are valued at the lower of the amount recorded at acquisition date or fair value, less estimated disposition costs. We classify all real estate owned as nonrecurring Level 3. The table presents additional quantitative information about assets measured at fair value on a recurring and nonrecurring basis and for which we have utilized Level 3 inputs to determine fair value at September 30, 2017 (dollar amounts in thousands): Fair value Valuation techniques Significant unobservable inputs Range (weighted average) Debt securities $ 10,659 Discounted cash Discount margin 0.4% to 2.1% (0.7%) flow Default rates 1.0% Prepayment speeds 1.0 annually Loans measured for impairment 38,907 Appraisal value (1) Estimated cost to sell 10.0% Discounted cash flow Discount rate 4.25% to 10.0% (7.50%) Real estate owned 5,462 Appraisal value (1) Estimated cost to sell 10.0% (1) Fair value is generally determined through independent appraisals of the underlying collateral, which may include level 3 inputs that are not identifiable, or by using the discounted cash flow method if the loan is not collateral dependent. The significant unobservable inputs used in the fair value measurement of our debt securities are discount margins, default rates and prepayment speeds. Significant increases in any of those rates would result in a significantly lower fair value measurement.

Guaranteed Preferred Beneficial

Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Derivatives	9 Months Ended
	Sep. 30, 2017
Guaranteed Preferred Beneficial Interests in Company's Junior Subordinated Deferrable Interest Debentures (Trust-Preferred Securities) and Derivatives
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Derivatives	Guaranteed Preferred Beneficial Interests in the Company’s Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Derivatives We have two legacy statutory business trusts: Northwest Bancorp Capital Trust III, a Delaware statutory business trust and Northwest Bancorp Statutory Trust IV, a Connecticut statutory business trust (“Trusts”). These trusts exist solely to issue preferred securities to third parties for cash, issue common securities to the Company in exchange for capitalization of the Trusts, invest the proceeds from the sale of the trust securities in an equivalent amount of debentures of the Company, and engage in other activities that are incidental to those previously listed. Northwest Bancorp Capital Trust III (Trust III) issued 50,000 cumulative trust preferred securities in a private transaction to a pooled investment vehicle on December 5, 2006 (liquidation value of $1,000 per preferred security or $50,000,000 ) with a stated maturity of December 30, 2035. These securities carry a floating interest rate, which is reset quarterly, equal to three-month LIBOR plus 1.38% . Northwest Bancorp Statutory Trust IV (Trust IV) issued 50,000 cumulative trust preferred securities in a private transaction to a pooled investment vehicle on December 15, 2006 (liquidation value of $1,000 per preferred security or $50,000,000 ) with a stated maturity of December 15, 2035. These securities carry a floating interest rate, which is reset quarterly, equal to three-month LIBOR plus 1.38% . The Trusts have invested the proceeds of the offerings in junior subordinated deferrable interest debentures issued by the Company. The structure of these debentures mirrors the structure of the trust-preferred securities. Trust III holds $51,547,000 of the Company’s junior subordinated debentures and Trust IV holds $51,547,000 of the Company’s junior subordinated debentures. These subordinated debentures are the sole assets of the Trusts. Cash distributions on the trust securities are made on a quarterly basis to the extent interest on the debentures is received by the Trusts. We have the right to defer payment of interest on the subordinated debentures at any time, or from time-to-time, for periods not exceeding five years. If interest payments on the subordinated debentures are deferred, the distributions on the trust preferred securities are also deferred. Interest on the subordinated debentures and distributions on the trust securities is cumulative. To date, there have been no interest deferrals. Our obligation constitutes a full, irrevocable, and unconditional guarantee on a subordinated basis of the obligations of the trust under the preferred securities. As a result of the LNB acquisition we acquired two statutory business trusts: LNB Trust I and LNB Trust II; both are Delaware statutory business trusts. The outstanding stock issued by LNB Trust I was redeemed on December 15, 2015. At September 30, 2017 , LNB Trust II had 7,875 cumulative trust preferred securities outstanding (liquidation value of $1,000 per preferred security or $7,875,000 ) with a stated maturity of June 15, 2037. These securities carry a floating interest rate, which is reset quarterly, equal to three-month LIBOR plus 1.48% . LNB Trust II invested the proceeds of the offerings in junior subordinated deferrable interest debentures acquired by the Company. The structure of these debentures mirrors the structure of the trust-preferred securities. LNB Trust II holds $8,119,000 of junior subordinated debentures. The subordinated debentures are the sole assets of the Trusts. Cash distributions on the trust securities are made on a quarterly basis to the extent interest on the debentures is received by the Trusts. Derivatives Designated as Hedging Instruments We are currently a counterparty to two interest rate swap agreements (swaps), designating the swaps as cash flow hedges. The swaps are intended to protect against the variability of cash flows associated with Trust III and Trust IV. The first swap modifies the re-pricing characteristics of Trust III, wherein for a ten year period expiring in September 2018, the Company receives interest of three-month LIBOR from a counterparty and pays a fixed rate of 4.61% to the same counterparty calculated on a notional amount of $ 25.0 million . The other swap modifies the re-pricing characteristics of Trust IV, wherein for a ten year period expiring in December 2018, the Company receives interest of three-month LIBOR from a counterparty and pays a fixed rate of 4.09% to the same counterparty calculated on a notional amount of $25.0 million . The swap agreements were entered into with a counterparty that met our credit standards and the agreements contain collateral provisions protecting the at-risk party. We believe that the credit risk inherent in the contracts is not significant. At September 30, 2017 , $ 2.1 million of cash was pledged as collateral to the counterparty. At September 30, 2017 , the fair value of the swap agreements was $(1.5) million and was the amount we would have expected to pay if the contracts were terminated. There was no material hedge ineffectiveness for these swaps. Derivatives Not Designated as Hedging Instruments We are currently a counterparty to foreign exchange contracts, which include spot and forward contracts, which are commitments to buy or sell foreign currency at an agreed-upon price on an agreed-upon settlement date. We use these instruments on a limited basis to eliminate exposure to fluctuations in currency exchange rates on certain commercial loans that are denominated in foreign currencies. As a result of fluctuations in foreign currencies, the U.S. dollar-equivalent value of the foreign currency denominated loans increase or decrease. Gains or losses on the foreign exchange contracts substantially offset the translation gains and losses on the related foreign currency denominated loans. The following table sets forth information related to derivatives at September 30, 2017 and December 31, 2016 (in thousands): September 30, December 31, Derivatives designed as hedging instruments: Fair value (1) $ 1,538 2,736 Notional amount 50,000 50,000 Collateral posted 2,055 3,005 Derivatives not designed as hedging instruments: Foreign exchange fair value (2) 44 — Notional amount 4,578 — (1) Included in other liabilities. (2) Included in other asset s.

Legal Proceedings

Legal Proceedings	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings	Legal Proceedings We establish accruals for legal proceedings when information related to the loss contingencies represented by those matters indicates both that a loss is probable and that the amount of loss can be reasonably estimated. As of September 30, 2017 we have not accrued for any legal proceedings based on our analysis of currently available information which is subject to significant judgment and a variety of assumptions and uncertainties. Any such accruals are adjusted thereafter as appropriate to reflect changes in circumstances. Due to the inherent subjectivity of assessments and unpredictability of outcomes of legal proceedings, any amounts accrued may not represent the ultimate loss to us from legal proceedings.

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income/ (Loss)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Changes in Accumulated Other Comprehensive Income/ (Loss)	Changes in Accumulated Other Comprehensive Income/ (Loss) The following table shows the changes in accumulated other comprehensive income by component for the periods indicated (in thousands): For the quarter ended September 30, 2017 Unrealized gains and (losses) on securities available- for-sale Change in fair value of interest rate swaps Change in defined benefit pension plans Total Balance as of June 30, 2017 $ 2,276 (1,257 ) (26,167 ) (25,148 ) Other comprehensive income before reclassification adjustments (264 ) 258 — (6 ) Amounts reclassified from accumulated other comprehensive income (1), (2) (674 ) — 221 (453 ) Net other comprehensive income (938 ) 258 221 (459 ) Balance as of September 30, 2017 $ 1,338 (999 ) (25,946 ) (25,607 ) For the quarter ended September 30, 2016 Unrealized gains and (losses) on securities available- for-sale Change in fair value of interest rate swaps Change in defined benefit pension plans Total Balance as of June 30, 2016 $ 7,866 (2,753 ) (24,630 ) (19,517 ) Other comprehensive income before reclassification adjustments (785 ) 471 — (314 ) Amounts reclassified from accumulated other comprehensive income (3), (4) (36 ) — 224 188 Net other comprehensive income (821 ) 471 224 (126 ) Balance as of September 30, 2016 $ 7,045 (2,282 ) (24,406 ) (19,643 ) (1) Consists of realized gain on securities (gain on sales of investments, net) of $1,043 , net of tax (income tax expense) of $(369) . (2) Consists of amortization of prior service cost (compensation and employee benefits) of $580 and amortization of net loss (compensation and employee benefits) of $(954) , net of tax (income tax expense) of $153 . See note 9. (3) Consists of realized loss on securities (gain on sales of investments, net) of $59 , net of tax (income tax expense) of $(23) . (4) Consists of amortization of prior service cost (compensation and employee benefits) of $581 and amortization of net loss (compensation and employee benefits) of $(949) , net of tax (income tax expense) of $144 . See note 9. The following table shows the changes in accumulated other comprehensive income by component for the periods indicated (in thousands): For the nine months ended September 30, 2017 Unrealized gains and (losses) on securities available- for-sale Change in fair value of interest rate swaps Change in defined benefit pension plans Total Balance as of December 31, 2016 $ 395 (1,778 ) (26,608 ) (27,991 ) Other comprehensive income before reclassification adjustments 1,684 779 — 2,463 Amounts reclassified from accumulated other comprehensive income (1), (2) (741 ) — 662 (79 ) Net other comprehensive income 943 779 662 2,384 Balance as of September 30, 2017 $ 1,338 (999 ) (25,946 ) (25,607 ) For the nine months ended September 30, 2016 Unrealized gains and (losses) on securities available- for-sale Change in fair value of interest rate swaps Change in defined benefit pension plans Total Balance as of December 31, 2015 $ 3,325 (2,779 ) (25,081 ) (24,535 ) Other comprehensive income before reclassification adjustments 3,717 497 — 4,214 Amounts reclassified from accumulated other comprehensive income (3), (4) 3 — 675 678 Net other comprehensive income 3,720 497 675 4,892 Balance as of September 30, 2016 $ 7,045 (2,282 ) (24,406 ) (19,643 ) (1) Consists of realized gains on securities (gain on sales of investments, net) of $1,157 , net of tax (income tax expense) of $(416) . (2) Consists of amortization of prior service cost (compensation and employee benefits) of $1,742 and amortization of net loss (compensation and employee benefits) of $(2,864) , net of tax (income tax expense) of $460 . See note 9. (3) Consists of realized gains on securities (gain on sales of investments, net) of $(4) , net of tax (income tax expense) of $1 . (4) Consists of amortization of prior service cost (compensation and employee benefits) of $1,742 and amortization of net loss (compensation and employee benefits) of $(2,849) , net of tax (income tax expense) of $432 . See note 9.

Basis of Presentation and Inf23

Basis of Presentation and Informational Disclosures (Policies)	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Income Taxes - Uncertain Tax Positions	Income Taxes- Uncertain Tax Positions Accounting standards prescribe a comprehensive model for how a company should recognize, measure, present and disclose in its financial statements uncertain tax positions that the company has taken or expects to take on a tax return. A tax benefit from an uncertain position may be recognized only if it is “more likely than not” that the position is sustainable, based on its technical merits. The tax benefit of a qualifying position is the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with a taxing authority having full knowledge of all relevant information. At September 30, 2017 the Company had no liability for unrecognized tax benefits. The Company recognizes interest accrued related to: (1) unrecognized tax benefits in other expenses and (2) refund claims in other operating income, and penalties (if any) in other expenses. We are subject to audit by the Internal Revenue Service and any state in which we conduct business for the tax periods ended December 31, 2016 , 2015 , and 2014 .
Impact of New Accounting Standards	Impact of New Accounting Standards In May 2014 the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-9, “Revenue from Contracts with Customers (Topic 606)”. This guidance supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance. The core principle of this guidance requires an entity to recognize revenue upon the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services and provides five steps to be analyzed to accomplish the core principle. This guidance is effective retrospectively for annual reporting periods beginning after December 15, 2017, including interim periods within those years and early adoption is not permitted. Our revenue is comprised of net interest income on financial assets and financial liabilities, which is explicitly excluded from the scope of ASU 2014-09, and non-interest income. With respect to non-interest income we are substantially complete with our overall assessment of revenue streams and reviewing of related contracts potentially affected by the ASU, including service charges and fees, trust and other financial services income, insurance commission income, and other operating income. Our assessment suggests that adoption of this ASU should not materially change the method in which we currently recognize revenue for these revenue streams. We are also substantially complete with our evaluation of certain costs related to these revenue streams to determine whether such costs should be presented as expenses or contra-revenue (i.e., gross vs. net). In addition, we are evaluating the ASU’s expanded disclosure requirements. We plan to adopt ASU No. 2014-09 on January 1, 2018 utilizing the modified retrospective approach with a cumulative effect adjustment to opening retained earnings, if such adjustment is deemed to be material. In February 2016 the FASB issued ASU 2016-2, “Leases” . This guidance requires a lessee to recognize in the statement of financial condition a liability to make lease payments and a right-of-use asset representing the right to use the underlying asset for the term of the lease. Optional periods should only be recognized if the lessee is reasonably certain to exercise the option. For leases with a term of twelve months or less, the lessee is permitted not to recognize lease assets and lease liabilities and should recognize lease expense for such leases generally on a straight-line basis over the term of the lease. This guidance is effective for annual periods beginning after December 15, 2018, including interim periods within those years and early adoption is permitted. We are currently evaluating the impact this standard will have on our results of operations and financial position. In June 2016, the FASB issued ASU 2016-13, " Financial Instruments-Credit Losses (Topic 326)-Measurement of Credit Losses on Financial Instruments" , which eliminates the probable initial recognition threshold for credit losses requiring, instead, that all financial assets (or group of financial assets) measured at amortized cost be presented at the net amount expected to be collected inclusive of the entity’s current estimate of all lifetime expected credit losses. This guidance also applies to certain off-balance-sheet credit exposures such as unfunded commitments and non-derivative financial guarantees. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) in order to present the net carrying value at the amount expected to be collected on the financial asset. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The income statement under this guidance will reflect the initial recognition of current expected credit losses for newly recognized assets, as well as any increases or decreases of expected credit losses that have occurred during the period. This guidance retains many currently-existing disclosures related to the credit quality of an entity’s assets and the related allowance for credit losses amended to reflect the change to an expected credit loss methodology, as well as enhanced disclosures to provide information to users at a more disaggregated level. Upon adoption, ASU 2016-13 provides for a modified retrospective transition by means of a cumulative-effect adjustment to equity as of the beginning of the period in which the guidance is effective, except for debt securities for which an other-than-temporary impairment has previously been recognized. For these debt securities, a prospective transition is provided in order to maintain the same amortized cost prior to and subsequent to the effective date of the ASU. This guidance is effective for annual reporting periods beginning after December 15, 2019, and interim periods within those annual periods with early adoption permitted for fiscal years beginning after December 15, 2018, and interim periods within those annual periods. Management created a formal working group to govern the implementation of these amendments consisting of key stakeholders from finance, risk, and accounting. We are currently in the process of designing current expected credit loss estimation methodologies and systems, and collecting data to be able to comply with the standard. We are also evaluating the effect this standard will have on our results of operations, financial position and related disclosures. The impact of the ASU will depend upon the state of the economy and the nature of our portfolios at the date of adoption. In January 2017 the FASB issued ASU 2017-04, "Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment" . This guidance eliminates the requirement to determine the fair value of individual assets and liabilities of a reporting unit to measure goodwill impairment. Under this guidance goodwill impairment testing will be performed by comparing the fair value of the reporting unit with its carrying amount and recognizing an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value. This guidance is effective for annual and interim goodwill impairment tests in fiscal years beginning after December 15, 2019, and should be applied on a prospective basis. We are currently evaluating the impact this standard will have on our results of operations and financial position. In March 2017, the FASB issued ASU No. 2017-07, “Compensation Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Costs and Net Periodic Postretirement Benefit Costs". This guidance provides financial statement users with clearer and disaggregated information related to the components of net periodic benefit cost and improve transparency of the presentation of net periodic benefit cost in the financial statements. This guidance is effective for annual and interim periods beginning after December 15, 2017. Early adoption is permitted and this guidance should be applied retrospectively. We are currently evaluating the impact this standard will have on our results of operations and financial position. In March 2017 the FASB issued ASU 2017-08, "Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities" . This guidance shortens the amortization period for certain callable debt securities held at a premium to the earliest call date from the maturity date. This guidance is effective for annual and interim periods beginning after December 15, 2018. Early adoption is permitted in any interim period. We are currently evaluating the impact this standard will have on our results of operations and financial position.

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Schedule of financial information for reportable segments	The following tables provide financial information for these reportable segments. The “All Other” column represents the parent company and elimination entries necessary to reconcile to the consolidated amounts presented in the financial statements. At or for the quarter ended (in thousands): Community Consumer September 30, 2017 Banking Finance All other (1) Consolidated External interest income $ 89,711 475 45 90,231 Intersegment interest income/ expense 138 — (138 ) — Interest expense 5,871 138 985 6,994 Provision for loan losses 8,693 (5,666 ) — 3,027 Noninterest income 23,922 36 636 24,594 Noninterest expense 67,493 1,941 (635 ) 68,799 Income tax expense 10,656 1,700 58 12,414 Net income $ 21,058 2,398 135 23,591 Total assets $ 9,404,881 44,849 10,084 9,459,814 (1) Consists of intercompany elimination entries and holding company income, expense and assets. Community Consumer September 30, 2016 Banking Finance All other (1) Consolidated External interest income $ 80,245 4,264 239 84,748 Intersegment interest income/ expense 645 — (645 ) — Interest expense 6,338 645 471 7,454 Provision for loan losses 4,276 1,262 — 5,538 Noninterest income 20,424 372 22 20,818 Noninterest expense 70,580 2,908 192 73,680 Income tax expense/ (benefit) 5,147 (74 ) (376 ) 4,697 Net income/ (loss) $ 14,973 (105 ) (671 ) 14,197 Total assets $ 9,590,487 109,601 14,519 9,714,607 (1) Consists of intercompany elimination entries and holding company income, expense and assets. At or for the nine months ended (in thousands): Community Consumer September 30, 2017 Banking Finance All other (1) Consolidated External interest income $ 259,160 8,008 127 267,295 Intersegment interest income 1,473 — (1,473 ) — Interest expense 17,344 1,473 1,933 20,750 Provision for loan losses 15,371 (2,145 ) — 13,226 Noninterest income 85,653 357 1,565 87,575 Noninterest expense 203,225 9,458 1,024 213,707 Income tax expense/ (benefit) 36,028 (175 ) (985 ) 34,868 Net income/ (loss) $ 74,318 (246 ) (1,753 ) 72,319 Total assets $ 9,404,881 44,849 10,084 9,459,814 (1) Consists of intercompany elimination entries and holding company income, expense and assets. Community Consumer September 30, 2016 Banking Finance All other (1) Consolidated External interest income $ 242,081 12,831 689 255,601 Intersegment interest income 1,918 — (1,918 ) — Interest expense 27,943 1,918 1,347 31,208 Provision for loan losses 8,854 2,543 — 11,397 Noninterest income 59,278 1,152 111 60,541 Noninterest expense 229,492 8,715 870 239,077 Income tax expense/ (benefit) 10,144 335 (1,192 ) 9,287 Net income/ (loss) $ 26,844 472 (2,143 ) 25,173 Total assets $ 9,590,487 109,601 14,519 9,714,607 (1) Consists of intercompany elimination entries and holding company income, expense and assets.

Investment securities and imp25

Investment securities and impairment of investment securities (Tables)	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Schedule of the portfolio of investment securities available-for-sale	The following table shows the portfolio of investment securities available-for-sale at September 30, 2017 (in thousands): Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value Debt issued by the U.S. government and agencies: Due in one year or less $ 2 — — 2 Debt issued by government sponsored enterprises: Due in one year or less 96,608 36 (244 ) 96,400 Due in one year through five years 141,476 34 (1,543 ) 139,967 Due in five years through ten years — — — — Due after ten years 5,304 — (72 ) 5,232 Equity securities 824 131 (6 ) 949 Municipal securities: Due in one year or less 2,312 13 — 2,325 Due in one year through five years 7,472 142 (3 ) 7,611 Due in five years through ten years 12,315 165 — 12,480 Due after ten years 30,226 572 — 30,798 Corporate debt issues: Due after ten years 14,280 4,611 (213 ) 18,678 Residential mortgage-backed securities: Fixed rate pass-through 143,106 1,460 (2,070 ) 142,496 Variable rate pass-through 35,140 1,573 (4 ) 36,709 Fixed rate non-agency CMOs 41 — — 41 Fixed rate agency CMOs 300,741 263 (2,855 ) 298,149 Variable rate agency CMOs 77,464 274 (94 ) 77,644 Total residential mortgage-backed securities 556,492 3,570 (5,023 ) 555,039 Total marketable securities available-for-sale $ 867,311 9,274 (7,104 ) 869,481 The following table shows the portfolio of investment securities available-for-sale at December 31, 2016 (in thousands): Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value Debt issued by the U.S. government and agencies: Due in one year or less $ 6 — — 6 Debt issued by government sponsored enterprises: Due in one year or less 74,980 5 (33 ) 74,952 Due after one year through five years 220,937 203 (2,504 ) 218,636 Due after five years through ten years 585 — (3 ) 582 Equity securities 3,351 1,095 (6 ) 4,440 Municipal securities: Due in one year or less 2,449 7 — 2,456 Due after one year through five years 9,448 105 (21 ) 9,532 Due after five years through ten years 11,794 137 (1 ) 11,930 Due after ten years 38,141 1,027 (16 ) 39,152 Corporate debt issues: Due after ten years 14,367 2,935 (322 ) 16,980 Residential mortgage-backed securities: Fixed rate pass-through 175,398 1,849 (2,680 ) 174,567 Variable rate pass-through 43,587 2,007 (6 ) 45,588 Fixed rate non-agency CMOs 100 1 — 101 Fixed rate agency CMOs 165,535 185 (3,455 ) 162,265 Variable rate agency CMOs 64,874 306 (167 ) 65,013 Total residential mortgage-backed securities 449,494 4,348 (6,308 ) 447,534 Total marketable securities available-for-sale $ 825,552 9,862 (9,214 ) 826,200
Schedule of the portfolio of investment securities held-to-maturity	The following table shows the portfolio of investment securities held-to-maturity at September 30, 2017 (in thousands): Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value Residential mortgage-backed securities: Fixed rate pass-through $ 3,971 189 — 4,160 Variable rate pass-through 2,412 57 — 2,469 Fixed rate agency CMOs 24,791 87 (25 ) 24,853 Variable rate agency CMOs 787 13 — 800 Total residential mortgage-backed securities 31,961 346 (25 ) 32,282 Total marketable securities held-to-maturity $ 31,961 346 (25 ) 32,282 The following table shows the portfolio of investment securities held-to-maturity at December 31, 2016 (in thousands): Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value Municipal securities: Due after ten years $ 4,808 65 — 4,873 Residential mortgage-backed securities: Fixed rate pass-through 4,807 217 — 5,024 Variable rate pass-through 2,848 58 — 2,906 Fixed rate agency CMOs 6,674 94 — 6,768 Variable rate agency CMOs 841 14 — 855 Total residential mortgage-backed securities 15,170 383 — 15,553 Total marketable securities held-to-maturity $ 19,978 448 — 20,426
Schedule of the fair value and gross unrealized losses on investment securities, aggregated by investment category and length of time individual securities have been in a continuous unrealized loss position	The following table shows the fair value of and gross unrealized losses on investment securities, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position at September 30, 2017 (in thousands): Less than 12 months 12 months or more Total Fair value Unrealized loss Fair value Unrealized loss Fair value Unrealized loss U.S. government sponsored enterprises $ 55,288 (161 ) 174,633 (1,698 ) 229,921 (1,859 ) Municipal securities 1,735 (3 ) — — 1,735 (3 ) Corporate issues — — 2,220 (213 ) 2,220 (213 ) Equity securities — — 544 (6 ) 544 (6 ) Residential mortgage-backed securities - agency 195,468 (814 ) 177,277 (4,234 ) 372,745 (5,048 ) Total temporarily impaired securities $ 252,491 (978 ) 354,674 (6,151 ) 607,165 (7,129 ) The following table shows the fair value of and gross unrealized losses on investment securities, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position at December 31, 2016 (in thousands): Less than 12 months 12 months or more Total Fair value Unrealized loss Fair value Unrealized loss Fair value Unrealized loss U.S. government sponsored enterprises $ 238,003 (2,448 ) 9,205 (92 ) 247,208 (2,540 ) Municipal securities 5,621 (37 ) 66 (1 ) 5,687 (38 ) Corporate debt issues — — 2,107 (322 ) 2,107 (322 ) Equity securities — — 544 (6 ) 544 (6 ) Residential mortgage-backed securities - agency 213,662 (3,837 ) 87,723 (2,471 ) 301,385 (6,308 ) Total temporarily impaired securities $ 457,286 (6,322 ) 99,645 (2,892 ) 556,931 (9,214 )
Schedule of the cumulative roll forward of credit losses recognized in earnings for debt securities held and not intended to be sold	The table below shows a cumulative roll forward of credit losses recognized in earnings for debt securities held and not intended to be sold for the quarter and nine months ended (in thousands): 2017 2016 Beginning balance at July 1, (1) $ 7,942 8,408 Credit losses on debt securities for which other-than-temporary impairment was not previously recognized — — Reduction for losses realized during the quarter — (16 ) Reduction for securities sold/ called realized during the quarter — — Additional credit losses on debt securities for which other-than-temporary impairment was previously recognized — — Ending balance at September 30, $ 7,942 8,392 (1) The beginning balance represents credit losses included in other-than-temporary impairment charges recognized on debt securities in prior periods 2017 2016 Beginning balance at January 1, (1) $ 7,942 8,436 Credit losses on debt securities for which other-than-temporary impairment was not previously recognized — — Reduction for losses realized during the quarter — (44 ) Reduction for securities sold/ called realized during the nine months — — Additional credit losses on debt securities for which other-than-temporary impairment was previously recognized — — Ending balance at September 30, $ 7,942 8,392 (1) The beginning balance represents credit losses included in other-than-temporary impairment charges recognized on debt securities in prior periods.

Loans receivable (Tables)

Loans receivable (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Summary of loans receivable	The following table shows a summary of our loans receivable at September 30, 2017 and December 31, 2016 (in thousands): September 30, 2017 December 31, 2016 Originated Acquired Total Originated Acquired Total Personal Banking: Residential mortgage loans (1) $ 2,624,216 119,463 2,743,679 2,565,620 133,511 2,699,131 Home equity loans 1,045,152 268,283 1,313,435 1,042,913 302,457 1,345,370 Consumer finance loans (2) 26,892 — 26,892 48,981 — 48,981 Consumer loans 522,604 110,611 633,215 418,656 163,622 582,278 Total Personal Banking 4,218,864 498,357 4,717,221 4,076,170 599,590 4,675,760 Commercial Banking: Commercial real estate loans 2,210,699 312,192 2,522,891 2,140,678 372,991 2,513,669 Commercial loans 556,750 69,724 626,474 481,543 75,676 557,219 Total Commercial Banking 2,767,449 381,916 3,149,365 2,622,221 448,667 3,070,888 Total loans receivable, gross 6,986,313 880,273 7,866,586 6,698,391 1,048,257 7,746,648 Deferred loan costs 24,707 1,799 26,506 20,081 2,294 22,375 Allowance for loan losses (50,845 ) (6,082 ) (56,927 ) (55,293 ) (5,646 ) (60,939 ) Undisbursed loan proceeds: Residential mortgage loans (13,146 ) — (13,146 ) (11,638 ) — (11,638 ) Commercial real estate loans (121,316 ) (2,689 ) (124,005 ) (168,595 ) (2,985 ) (171,580 ) Commercial loans (28,519 ) (1,284 ) (29,803 ) (26,168 ) (2,290 ) (28,458 ) Total loans receivable, net $ 6,797,194 872,017 7,669,211 6,456,778 1,039,630 7,496,408 (1) Includes $1.4 million and $9.6 million of loans held for sale at September 30, 2017 and December 31, 2016, respectively. (2) Represents consumer loans from our NCDC offices which are no longer being originated.
Schedule of information related to the outstanding principal balance and related carrying value of acquired loans	The following table provides information related to the outstanding principal balance and related carrying value of acquired loans for the dates indicated (in thousands): September 30, December 31, Acquired loans evaluated individually for future credit losses: Outstanding principal balance $ 10,344 16,108 Carrying value 7,393 12,665 Acquired loans evaluated collectively for future credit losses: Outstanding principal balance 877,022 1,040,378 Carrying value 870,705 1,032,611 Total acquired loans: Outstanding principal balance 887,366 1,056,486 Carrying value 878,098 1,045,276
Schedule of the changes in the accretable discount	The following table provides information related to the changes in the accretable discount, which includes income recognized from contractual cash flows for the dates indicated (in thousands): Total Balance at December 31, 2015 $ 2,019 Accretion (1,170 ) Net reclassification from nonaccretable yield 1,338 Balance at December 31, 2016 2,187 Accretion (1,130 ) Net reclassification from nonaccretable yield 498 Balance at September 30, 2017 $ 1,555
Schedule of the composition of impaired loans by portfolio segment and by class of financing receivable	The following table provides information related to the composition of originated impaired loans by portfolio segment and by class of financing receivable at and for the nine months ended September 30, 2017 (in thousands): Nonaccrual loans 90 or more days delinquent Nonaccrual loans less than 90 days delinquent Loans less than 90 days delinquent reviewed for impairment TDRs less than 90 days delinquent not included elsewhere Total impaired loans Average recorded investment in impaired loans Interest income recognized on impaired loans Personal Banking: Residential mortgage loans $ 11,785 1,410 — 6,894 20,089 21,521 706 Home equity loans 6,295 1,404 — 1,436 9,135 8,878 320 Consumer finance loans 332 1 — — 333 428 15 Consumer loans 3,244 864 — — 4,108 3,887 132 Total Personal Banking 21,656 3,679 — 8,330 33,665 34,714 1,173 Commercial Banking: Commercial real estate loans 22,583 17,138 4,707 4,804 49,232 52,813 1,381 Commercial loans 4,177 4,101 943 2,447 11,668 12,402 544 Total Commercial Banking 26,760 21,239 5,650 7,251 60,900 65,215 1,925 Total $ 48,416 24,918 5,650 15,581 94,565 99,929 3,098 The following table provides information related to the composition of originated impaired loans by portfolio segment and by class of financing receivable at and for the year ended December 31, 2016 (in thousands): Nonaccrual loans 90 or more days delinquent Nonaccrual loans less than 90 days delinquent Loans less than 90 days delinquent reviewed for impairment TDRs less than 90 days delinquent not included elsewhere Total impaired loans Average recorded investment in impaired loans Interest income recognized on impaired loans Personal Banking: Residential mortgage loans $ 13,169 5,095 — 5,929 24,193 24,483 1,079 Home equity loans 5,552 2,313 — 1,439 9,304 9,234 496 Consumer finance loans 743 — — — 743 772 35 Consumer loans 3,080 1,286 — — 4,366 2,931 131 Total Personal Banking 22,544 8,694 — 7,368 38,606 37,420 1,741 Commercial Banking: Commercial real estate loans 19,264 19,460 3,622 11,582 53,928 64,350 2,864 Commercial loans 3,373 6,201 2,837 3,116 15,527 16,905 991 Total Commercial Banking 22,637 25,661 6,459 14,698 69,455 81,255 3,855 Total $ 45,181 34,355 6,459 22,066 108,061 118,675 5,596 The following table provides information related to acquired impaired loans by portfolio segment and by class of financing receivable at and for the nine months ended September 30, 2017 (in thousands): Carrying value Outstanding principal balance Related impairment reserve Average recorded investment in impaired loans Interest income recognized Personal Banking: Residential mortgage loans $ 1,215 1,931 37 1,267 126 Home equity loans 1,166 2,274 9 1,264 124 Consumer loans 80 198 4 108 43 Total Personal Banking 2,461 4,403 50 2,639 293 Commercial Banking: Commercial real estate loans 4,828 5,826 67 7,212 823 Commercial loans 104 115 — 178 14 Total Commercial Banking 4,932 5,941 67 7,390 837 Total $ 7,393 10,344 117 10,029 1,130 The following table provides information related to acquired impaired loans by portfolio segment and by class of financing receivable at and for the year ended December 31, 2016 (in thousands): Carrying Outstanding Related Average Interest Personal Banking: Residential mortgage loans $ 1,319 2,062 204 1,650 202 Home equity loans 1,363 2,669 8 1,724 185 Consumer loans 136 303 3 201 51 Total Personal Banking 2,818 5,034 215 3,575 438 Commercial Banking: Commercial real estate loans 9,596 10,809 52 10,942 721 Commercial loans 251 265 — 249 11 Total Commercial Banking 9,847 11,074 52 11,191 732 Total $ 12,665 16,108 267 14,766 1,170
Schedule of the changes in the allowance for losses on loans receivable	The following table provides information related to the allowance for loan losses by portfolio segment and by class of financing receivable for the quarter ended September 30, 2017 (in thousands): Balance Current period provision Charge-offs Recoveries Balance Originated loans: Personal Banking: Residential mortgage loans $ 3,986 (462 ) (211 ) 24 4,635 Home equity loans 3,295 615 (285 ) 8 2,957 Consumer finance loans 4,876 4,220 (3,891 ) 80 4,467 Consumer loans 7,383 4,594 (2,844 ) 353 5,280 Total Personal Banking 19,540 8,967 (7,231 ) 465 17,339 Commercial Banking: Commercial real estate loans 20,174 (2,529 ) (163 ) 282 22,584 Commercial loans 11,131 (5,445 ) (204 ) 76 16,704 Total Commercial Banking 31,305 (7,974 ) (367 ) 358 39,288 Total originated loans 50,845 993 (7,598 ) 823 56,627 Acquired loans: Personal Banking: Residential mortgage loans 77 (11 ) (4 ) 7 85 Home equity loans 748 324 (243 ) 44 623 Consumer loans 594 106 (158 ) 18 628 Total Personal Banking 1,419 419 (405 ) 69 1,336 Commercial Banking: Commercial real estate loans 3,301 2,433 (1,738 ) 160 2,446 Commercial loans 1,362 (818 ) (305 ) 9 2,476 Total Commercial Banking 4,663 1,615 (2,043 ) 169 4,922 Total acquired loans 6,082 2,034 (2,448 ) 238 6,258 Total $ 56,927 3,027 (10,046 ) 1,061 62,885 The following table provides information related to the allowance for loan losses by portfolio segment and by class of financing receivable for the quarter ended September 30, 2016 (in thousands): Balance Current period provision Charge-offs Recoveries Balance Originated loans: Personal Banking: Residential mortgage loans $ 4,002 1,109 (268 ) 139 3,022 Home equity loans 3,519 296 (161 ) 49 3,335 Consumer finance loans 3,429 1,014 (835 ) 111 3,139 Consumer loans 5,667 2,331 (1,700 ) 251 4,785 Total Personal Banking 16,617 4,750 (2,964 ) 550 14,281 Commercial Banking: Commercial real estate loans 24,530 (1,041 ) (602 ) 487 25,686 Commercial loans 16,877 1,668 (708 ) 561 15,356 Total Commercial Banking 41,407 627 (1,310 ) 1,048 41,042 Total originated loans 58,024 5,377 (4,274 ) 1,598 55,323 Acquired loans: Personal Banking: Residential mortgage loans 78 45 (86 ) 58 61 Home equity loans 1,171 138 (127 ) 32 1,128 Consumer loans 644 212 (166 ) 46 552 Total Personal Banking 1,893 395 (379 ) 136 1,741 Commercial Banking: Commercial real estate loans 2,422 (588 ) (187 ) 32 3,165 Commercial loans 907 354 — 1 552 Total Commercial Banking 3,329 (234 ) (187 ) 33 3,717 Total acquired loans 5,222 161 (566 ) 169 5,458 Total $ 63,246 5,538 (4,840 ) 1,767 60,781 The following table provides information related to the allowance for loan losses by portfolio segment and by class of financing receivable for the nine months ended September 30, 2017 (in thousands): Balance Current period provision Charge-offs Recoveries Balance Originated loans: Personal Banking: Residential mortgage loans $ 3,986 (278 ) (678 ) 286 4,656 Home equity loans 3,295 503 (803 ) 109 3,486 Consumer finance loans 4,876 6,610 (5,469 ) 290 3,445 Consumer loans 7,383 9,741 (7,912 ) 1,025 4,529 Total Personal Banking 19,540 16,576 (14,862 ) 1,710 16,116 Commercial Banking: Commercial real estate loans 20,174 (3,988 ) (498 ) 993 23,667 Commercial loans 11,131 (3,517 ) (1,858 ) 996 15,510 Total Commercial Banking 31,305 (7,505 ) (2,356 ) 1,989 39,177 Total originated loans 50,845 9,071 (17,218 ) 3,699 55,293 Acquired loans: Personal Banking: Residential mortgage loans 77 130 (199 ) 75 71 Home equity loans 748 512 (1,063 ) 252 1,047 Consumer loans 594 405 (689 ) 225 653 Total Personal Banking 1,419 1,047 (1,951 ) 552 1,771 Commercial Banking: Commercial real estate loans 3,301 1,832 (2,206 ) 667 3,008 Commercial loans 1,362 1,276 (847 ) 66 867 Total Commercial Banking 4,663 3,108 (3,053 ) 733 3,875 Total acquired loans 6,082 4,155 (5,004 ) 1,285 5,646 Total $ 56,927 13,226 (22,222 ) 4,984 60,939 The following table provides information related to the allowance for loan losses by portfolio segment and by class of financing receivable for the nine months ended September 30, 2016 (in thousands): Balance Current period provision Charge-offs Recoveries Balance Originated loans: Personal banking: Residential mortgage loans $ 4,002 1,612 (2,559 ) 257 4,692 Home equity loans 3,519 253 (898 ) 223 3,941 Consumer finance loans 3,429 2,163 (2,321 ) 312 3,275 Consumer loans 5,667 5,205 (4,587 ) 836 4,213 Total personal banking 16,617 9,233 (10,365 ) 1,628 16,121 Commercial banking: Commercial real estate loans 24,530 (8,756 ) (2,103 ) 3,041 32,348 Commercial loans 16,877 5,008 (1,704 ) 1,072 12,501 Total commercial banking 41,407 (3,748 ) (3,807 ) 4,113 44,849 Total originated loans 58,024 5,485 (14,172 ) 5,741 60,970 Acquired loans: Personal banking: Residential mortgage loans 78 118 (211 ) 153 18 Home equity loans 1,171 2,093 (1,320 ) 297 101 Consumer loans 644 925 (528 ) 137 110 Total personal banking 1,893 3,136 (2,059 ) 587 229 Commercial banking: Commercial real estate loans 2,422 1,886 (1,314 ) 411 1,439 Commercial loans 907 890 (24 ) 7 34 Total commercial banking 3,329 2,776 (1,338 ) 418 1,473 Total acquired loans 5,222 5,912 (3,397 ) 1,005 1,702 Total $ 63,246 11,397 (17,569 ) 6,746 62,672
Schedule of loan portfolio by portfolio segment and by class of financing receivable	The following table provides information related to the loan portfolio by portfolio segment and by class of financing receivable at September 30, 2017 (in thousands): Total loans receivable Allowance for loan losses Nonaccrual loans (1) Loans past due 90 days or more and still accruing (2) TDRs (3) Allowance related to TDRs Additional commitments to customers with loans classified as TDRs Personal Banking: Residential mortgage loans $ 2,743,226 4,063 13,195 — 7,807 782 — Home equity loans 1,313,435 4,043 7,699 146 1,781 451 4 Consumer finance loans 26,892 4,876 333 — — — — Consumer loans 647,028 7,977 4,108 252 — — — Total Personal Banking 4,730,581 20,959 25,335 398 9,588 1,233 4 Commercial Banking: Commercial real estate loans 2,398,886 23,475 39,721 — 22,173 1,926 252 Commercial loans 596,671 12,493 8,278 — 6,708 1,025 23 Total Commercial Banking 2,995,557 35,968 47,999 — 28,881 2,951 275 Total $ 7,726,138 56,927 73,334 398 38,469 4,184 279 (1) Includes $17.8 million of nonaccrual TDRs. (2) Represents loans 90 days past maturity and still accruing. (3) Includes $17.8 million of nonaccrual, and $20.7 million of accruing TDRs. The following table provides information related to the loan portfolio by portfolio segment and by class of financing receivable at December 31, 2016 (in thousands): Total loans receivable Allowance for loan losses Nonaccrual loans (1) Loans past due 90 days or more and still accruing (2) TDRs (3) Allowance related to TDRs Additional commitments to customers with loans classified as TDRs Personal Banking: Residential mortgage loans $ 2,698,166 4,727 18,264 — 7,299 708 — Home equity loans 1,345,370 4,533 7,865 — 1,813 450 4 Consumer finance loans 48,981 3,445 743 — — — — Consumer loans 593,980 5,182 4,366 85 — — — Total Personal Banking 4,686,497 17,887 31,238 85 9,112 1,158 4 Commercial Banking: Commercial real estate loans 2,342,089 26,675 38,724 564 24,483 2,072 417 Commercial loans 528,761 16,377 9,574 — 9,331 1,360 17 Total Commercial Banking 2,870,850 43,052 48,298 564 33,814 3,432 434 Total $ 7,557,347 60,939 79,536 649 42,926 4,590 438 (1) Includes $16.3 million of nonaccrual TDRs. (2) Represents loans 90 days past maturity and still accruing. (3) Includes $16.3 million of nonaccrual, and $26.6 million of accruing TDRs.
Schedule of the evaluation of impaired loans by portfolio segment and by class of financing receivable	The following table provides information related to the evaluation of impaired loans by portfolio segment and by class of financing receivable at September 30, 2017 (in thousands): Loans collectively evaluated for impairment Loans individually evaluated for impairment Loans individually evaluated for impairment for which there is a related impairment reserve Related impairment reserve Loans individually evaluated for impairment for which there is no related reserve Personal Banking: Residential mortgage loans $ 2,734,753 8,473 8,473 783 — Home equity loans 1,311,654 1,781 1,781 451 — Consumer finance loans 26,892 — — — — Consumer loans 646,933 95 95 23 — Total Personal Banking 4,720,232 10,349 10,349 1,257 — Commercial Banking: Commercial real estate loans 2,370,814 28,072 25,223 3,028 2,849 Commercial loans 587,013 9,658 9,150 1,530 508 Total Commercial Banking 2,957,827 37,730 34,373 4,558 3,357 Total $ 7,678,059 48,079 44,722 5,815 3,357 The following table provides information related to the evaluation of impaired loans by portfolio segment and by class of financing receivable at December 31, 2016 (in thousands): Loans collectively evaluated for impairment Loans individually evaluated for impairment Loans individually evaluated for impairment for which there is a related impairment reserve Related impairment reserve Loans individually evaluated for impairment for which there is no related reserve Personal Banking: Residential mortgage loans $ 2,689,886 8,280 8,280 709 — Home equity loans 1,343,556 1,814 1,814 450 — Consumer finance loans 48,981 — — — — Consumer loans 593,854 126 126 29 — Total Personal Banking 4,676,277 10,220 10,220 1,188 — Commercial Banking: Commercial real estate loans 2,309,186 32,903 27,594 3,545 5,309 Commercial loans 518,449 10,312 10,242 1,390 70 Total Commercial Banking 2,827,635 43,215 37,836 4,935 5,379 Total $ 7,503,912 53,435 48,056 6,123 5,379
Schedule of roll forward of troubled debt restructurings	The following table provides a roll forward of troubled debt restructurings for the periods indicated (dollars in thousands): For the quarters ended September 30, 2017 2016 Number of contracts Amount Number of contracts Amount Beginning TDR balance: 203 $ 41,860 230 $ 49,113 New TDRs 6 546 5 245 Re-modified TDRs 2 265 1 799 Net paydowns (987 ) (1,781 ) Charge-offs: Residential mortgage loans — — — — Home equity loans — — — — Commercial real estate loans 2 (2,498 ) — — Commercial loans — — 1 (99 ) Paid-off loans: Residential mortgage loans — — 3 (143 ) Home equity loans 3 (30 ) 2 (264 ) Commercial real estate loans 1 (564 ) 8 (1,022 ) Commercial loans 2 (123 ) 3 (253 ) Ending TDR balance: 201 $ 38,469 218 $ 46,595 Accruing TDRs $ 20,660 $ 29,221 Non-accrual TDRs 17,809 17,374 The following table provides a roll forward of troubled debt restructuring for the periods indicated (dollars in thousands): For the nine months ended September 30, 2017 2016 Number of contracts Amount Number of contracts Amount Beginning TDR balance: 225 $ 42,926 227 $ 51,115 New TDRs 13 4,685 23 5,256 Re-modified TDRs 3 710 5 1,862 Net paydowns (3,668 ) (4,685 ) Charge-offs: Residential mortgage loans — — — — Home equity loans — — — — Commercial real estate loans 2 (2,498 ) — — Commercial loans 6 (259 ) 2 (142 ) Paid-off loans: Residential mortgage loans — — 3 (143 ) Home equity loans 8 (62 ) 5 (496 ) Commercial real estate loans 11 (1,109 ) 16 (5,584 ) Commercial loans 10 (2,256 ) 6 (588 ) Ending TDR balance: 201 $ 38,469 218 $ 46,595 Accruing TDRs $ 20,660 $ 29,221 Non-accrual TDRs 17,809 17,374
Schedule of troubled debt restructurings (including re-modified TDRs) by portfolio segment and by class of financing receivable	The following table provides information related to troubled debt restructurings (including re-modified TDRs) by portfolio segment and by class of financing receivable during the periods indicated (dollars in thousands): For the quarter ended For the nine months ended September 30, 2016 Number of contracts Recorded investment at the time of modification Current recorded investment Current allowance Number of contracts Recorded investment at the time of modification Current recorded investment Current allowance Troubled debt restructurings: Personal Banking: Residential mortgage loans 1 $ 9 8 1 6 $ 1,041 1,031 105 Home equity loans 1 3 3 1 6 284 281 60 Total Personal Banking 2 12 11 2 12 1,325 1,312 165 Commercial Banking: Commercial real estate loans 1 154 153 11 5 2,250 2,218 295 Commercial loans 3 878 877 64 11 3,543 2,591 632 Total Commercial Banking 4 1,032 1,030 75 16 5,793 4,809 927 Total 6 $ 1,044 1,041 77 28 $ 7,118 6,121 1,092 Troubled debt restructurings modified within the previous twelve months that have subsequently defaulted: Personal Banking: Residential mortgage loans — $ — — — — $ — — — Home equity loans — — — — — — — — Total Personal Banking — — — — — — — — Commercial Banking: Commercial real estate loans 1 6,256 6,113 893 1 6,256 6,113 893 Commercial loans — — — — — — — — Total Commercial Banking 1 6,256 6,113 893 1 6,256 6,113 893 Total 1 $ 6,256 6,113 893 1 $ 6,256 6,113 893 The following table provides information related to troubled debt restructurings (including re-modified TDRs) by portfolio segment and by class of financing receivable during the periods indicated (dollars in thousands): For the quarter ended For the nine months ended September 30, 2017 Number of contracts Recorded investment at the time of modification Current recorded investment Current allowance Number of contracts Recorded investment at the time of modification Current recorded investment Current allowance Troubled debt restructurings: Personal Banking: Residential mortgage loans 2 $ 403 402 40 5 $ 1,297 1,276 128 Home equity loans 2 122 119 30 2 122 119 30 Total Personal Banking 4 525 521 70 7 1,419 1,395 158 Commercial Banking: Commercial real estate loans 2 114 116 13 6 3,600 3,282 285 Commercial loans 2 172 170 71 3 376 352 84 Total Commercial Banking 4 286 286 84 9 3,976 3,634 369 Total 8 $ 811 807 154 16 $ 5,395 5,029 527 Troubled debt restructurings modified within the previous twelve months that have subsequently defaulted: Personal Banking: Residential mortgage loans — $ — — — — $ — — — Home equity loans — — — — — — — — Total Personal Banking — — — — — — — — Commercial Banking Commercial real estate loans 1 90 90 11 1 90 90 11 Commercial loans 1 150 150 70 1 150 150 70 Total Commercial Banking 2 240 240 81 2 240 240 81 Total 2 $ 240 240 81 2 $ 240 240 81
Schedule of troubled debt restructurings (including re-modified TDRs) by type of modification by portfolio segment and by class of financing receivable	The following table provides information as of September 30, 2017 for troubled debt restructuring (including re-modified TDRs) by type of modification, by portfolio segment and class of financing receivable for modifications during the quarter ended September 30, 2017 (dollars in thousands): Type of modification Number of contracts Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans 2 $ 250 — — 152 402 Home equity loans 2 119 — — — 119 Total Personal Banking 4 369 — — 152 521 Commercial Banking: Commercial real estate loans 2 — — 116 — 116 Commercial loans 2 — — 170 — 170 Total Commercial Banking 4 — — 286 — 286 Total 8 $ 369 — 286 152 807 The following table provides information as of September 30, 2016 for troubled debt restructuring (including re-modified TDRs) by type of modification, by portfolio segment and class of financing receivable for modifications during the quarter ended September 30, 2016 (dollars in thousands): Type of modification Number of contracts Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans 1 $ — — 8 — 8 Home equity loans 1 — — 3 — 3 Total Personal Banking 2 — — 11 — 11 Commercial Banking: Commercial real estate loans 1 — — 153 — 153 Commercial loans 3 — 799 78 — 877 Total Commercial Banking 4 — 799 231 — 1,030 Total 6 $ — 799 242 — 1,041 The following table provides information as of September 30, 2017 for troubled debt restructuring (including re-modified TDRs) by type of modification, by portfolio segment and class of financing receivable for modifications during the nine months ended September 30, 2017 (dollars in thousands): Type of modification Number of contracts Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans 5 $ 360 — — 916 1,276 Home equity loans 2 119 — — — 119 Total Personal Banking 7 479 — — 916 1,395 Commercial Banking: Commercial real estate loans 6 — 2,710 572 — 3,282 Commercial loans 3 — — 352 — 352 Total Commercial Banking 9 — 2,710 924 — 3,634 Total 16 $ 479 2,710 924 916 5,029 The following table provides information as of September 30, 2016 for troubled debt restructurings (including re-modified TDRs) by type of modification, by portfolio segment and class of financing receivable for modifications during the nine months ended September 30, 2016 (dollars in thousands): Type of modification Number of contracts Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans 6 $ 361 — 622 48 1,031 Home equity loans 6 121 — 3 157 281 Total Personal Banking 12 482 — 625 205 1,312 Commercial Banking: Commercial real estate loans 5 — 429 535 1,254 2,218 Commercial loans 11 — 799 1,042 750 2,591 Total Commercial Banking 16 — 1,228 1,577 2,004 4,809 Total 28 $ 482 1,228 2,202 2,209 6,121
Schedule of re-modified troubled debt restructurings by portfolio segment and by class of financing receivable	The following table provides information related to re-modified troubled debt restructuring by portfolio segment and by class of financing receivable for the quarter ended September 30, 2017 (dollars in thousands): Type of re-modification Number of re-modified TDRs Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans 1 $ 250 — — — 250 Home equity loans 1 13 — — — 13 Total Personal Banking 2 263 — — — 263 Commercial Banking: Commercial real estate loans — — — — — — Commercial loans — — — — — — Total Commercial Banking — — — — — — Total 2 $ 263 — — — 263 The following table provides information related to re-modified troubled debt restructurings by portfolio segment and by class of financing receivable for the quarter ended September 30, 2016 (dollars in thousands): Type of re-modification Number of re-modified TDRs Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans — $ — — — — — Home equity loans — — — — — — Total Personal Banking — — — — — — Commercial Banking: Commercial real estate loans — — — — — — Commercial loans 1 — 799 — — 799 Total Commercial Banking 1 — 799 — — 799 Total 1 $ — 799 — — 799 The following table provides information related to re-modified troubled debt restructurings by portfolio segment and by class of financing receivable for the nine months ended September 30, 2017 (dollars in thousands): Type of re-modification Number of re-modified TDRs Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans 2 $ 250 — — 430 680 Home equity loans 1 13 — — — 13 Total Personal Banking 3 263 — — 430 693 Commercial Banking: Commercial real estate loans — — — — — — Commercial loans — — — — — — Total Commercial Banking — — — — — — Total 3 $ 263 — — 430 693 The following table provides information related to re-modified troubled debt restructurings by portfolio segment and by class of financing receivable for the nine months ended September 30, 2016 (dollars in thousands): Type of re-modification Number of re-modified TDRs Rate Payment Maturity date Other Total Personal Banking: Residential mortgage loans — $ — — — — — Home equity loans — — — — — — Total Personal Banking — — — — — — Commercial Banking: Commercial real estate loans 1 — — — 182 182 Commercial loans 4 — 1,662 — — 1,662 Total Commercial Banking 5 — 1,662 — 182 1,844 Total 5 $ — 1,662 — 182 1,844
Schedule of loan delinquencies	The following table provides information related to loan payment delinquencies at September 30, 2017 (in thousands): 30-59 Days delinquent 60-89 Days delinquent 90 Days or greater delinquent Total delinquency Current Total loans receivable 90 Days or greater delinquent and accruing (1) Originated loans: Personal Banking: Residential mortgage loans $ 2,771 6,133 11,315 20,219 2,603,544 2,623,763 — Home equity loans 6,636 2,219 5,158 14,013 1,031,139 1,045,152 — Consumer finance loans 3,065 2,190 332 5,587 21,305 26,892 — Consumer loans 8,248 2,963 2,939 14,150 520,468 534,618 — Total Personal Banking 20,720 13,505 19,744 53,969 4,176,456 4,230,425 — Commercial Banking: Commercial real estate loans 3,586 7,290 18,069 28,945 2,060,438 2,089,383 — Commercial loans 271 2 3,288 3,561 524,670 528,231 — Total Commercial Banking 3,857 7,292 21,357 32,506 2,585,108 2,617,614 — Total originated loans 24,577 20,797 41,101 86,475 6,761,564 6,848,039 — Acquired loans: Personal Banking: Residential mortgage loans — 1,063 875 1,938 117,525 119,463 405 Home equity loans 694 171 1,239 2,104 266,179 268,283 102 Consumer loans 1,262 320 315 1,897 110,513 112,410 10 Total Personal Banking 1,956 1,554 2,429 5,939 494,217 500,156 517 Commercial Banking: Commercial real estate loans 2,167 376 5,241 7,784 301,719 309,503 727 Commercial loans 475 194 889 1,558 66,882 68,440 — Total Commercial Banking 2,642 570 6,130 9,342 368,601 377,943 727 Total acquired loans 4,598 2,124 8,559 15,281 862,818 878,099 1,244 Total loans $ 29,175 22,921 49,660 101,756 7,624,382 7,726,138 1,244 (1) Represents acquired loans that were originally recorded at fair value upon acquisition. These loans are considered to be accruing because we can reasonably estimate future cash flows on and expect to fully collect the carrying value of these loans. Therefore, we are accreting the difference between the carrying value and their expected cash flows into interest income. The following table provides information related to loan payment delinquencies at December 31, 2016 (in thousands): 30-59 Days delinquent 60-89 Days delinquent 90 Days or greater delinquent Total delinquency Current Total loans receivable 90 Days or Originated loans: Personal Banking: Residential mortgage loans $ 26,212 5,806 12,792 44,810 2,536,443 2,564,655 — Home equity loans 5,785 1,305 4,783 11,873 1,014,442 1,042,913 — Consumer finance loans 1,255 766 743 2,764 46,217 48,981 — Consumer loans 7,343 2,438 2,775 12,556 415,508 428,064 — Total Personal Banking 40,595 10,315 21,093 72,003 4,012,610 4,084,613 — Commercial Banking: Commercial real estate loans 7,674 3,674 16,508 27,856 1,944,227 1,972,083 — Commercial loans 1,067 1,957 3,107 6,131 449,244 455,375 — Total Commercial Banking 8,741 5,631 19,615 33,987 2,393,471 2,427,458 — Total originated loan 49,336 15,946 40,708 105,990 6,406,081 6,512,071 — Acquired loans: Personal Banking: Residential mortgage loans 1,174 421 829 2,424 131,087 133,511 452 Home equity loans 1,020 258 973 2,251 300,206 302,457 204 Consumer loans 1,270 405 320 1,995 163,921 165,916 15 Total Personal Banking 3,464 1,084 2,122 6,670 595,214 601,884 671 Commercial Banking: Commercial real estate loans 2,703 821 4,762 8,286 361,720 370,006 2,006 Commercial loans 111 124 413 648 72,738 73,386 147 Total Commercial Banking 2,814 945 5,175 8,934 434,458 443,392 2,153 Total acquired loan 6,278 2,029 7,297 15,604 1,029,672 1,045,276 2,824 Total $ 55,614 17,975 48,005 121,594 7,435,753 7,557,347 2,824 (1) Represents acquired loans that were originally recorded at fair value upon acquisition. These loans are considered to be accruing because we can reasonably estimate future cash flows on and expect to fully collect the carrying value of these loans. Therefore, we are accreting the difference between the carrying value and their expected cash flows into interest income.
Schedule of credit quality indicators	The following table sets forth information about credit quality indicators updated during the quarter ended September 30, 2017 (in thousands): Pass Special mention Substandard Doubtful Loss Total loans receivable Originated loans: Personal Banking: Residential mortgage loans $ 2,607,925 — 15,838 — — 2,623,763 Home equity loans 1,037,567 — 7,585 — — 1,045,152 Consumer finance loans 26,560 — 332 — — 26,892 Consumer loans 531,310 — 3,308 — — 534,618 Total Personal Banking 4,203,362 — 27,063 — — 4,230,425 Commercial Banking: Commercial real estate loans 1,927,940 50,962 110,481 — — 2,089,383 Commercial loans 467,664 15,204 45,363 — — 528,231 Total Commercial Banking 2,395,604 66,166 155,844 — — 2,617,614 Total originated loans 6,598,966 66,166 182,907 — — 6,848,039 Acquired loans: Personal Banking: Residential mortgage loans 117,135 — 2,328 — — 119,463 Home equity loans 264,469 — 3,814 — — 268,283 Consumer loans 111,662 — 748 — — 112,410 Total Personal Banking 493,266 — 6,890 — — 500,156 Commercial Banking: Commercial real estate loans 268,570 5,156 35,777 — — 309,503 Commercial loans 59,160 3,720 5,560 — — 68,440 Total Commercial Banking 327,730 8,876 41,337 — — 377,943 Total acquired loans 820,996 8,876 48,227 — — 878,099 Total loans $ 7,419,962 75,042 231,134 — — 7,726,138 The following table sets forth information about credit quality indicators, which were updated during the year ended December 31, 2016 (in thousands): Pass Special mention Substandard Doubtful Loss Total loans receivable Originated loans: Personal Banking: Residential mortgage loans $ 2,548,390 — 16,265 — — 2,564,655 Home equity loans 1,035,496 — 7,417 — — 1,042,913 Consumer finance loans 48,238 — 743 — — 48,981 Consumer loans 425,712 — 2,352 — — 428,064 Total Personal Banking 4,057,836 — 26,777 — — 4,084,613 Commercial Banking: Commercial real estate loans 1,821,548 36,321 114,214 — — 1,972,083 Commercial loans 401,866 15,203 38,306 — — 455,375 Total Commercial Banking 2,223,414 51,524 152,520 — — 2,427,458 Total originated loans 6,281,250 51,524 179,297 — — 6,512,071 Acquired loans: Personal Banking: Residential mortgage loans 131,717 — 1,794 — — 133,511 Home equity loans 300,100 — 2,357 — — 302,457 Consumer loans 165,094 — 822 — — 165,916 Total Personal Banking 596,911 — 4,973 — — 601,884 Commercial Banking: Commercial real estate loans 331,780 7,403 30,823 — — 370,006 Commercial loans 68,127 1,989 3,270 — — 73,386 Total Commercial Banking 399,907 9,392 34,093 — — 443,392 Total acquired loans 996,818 9,392 39,066 — — 1,045,276 Total $ 7,278,068 60,916 218,363 — — 7,557,347

Goodwill and Other Intangible27

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of intangible assets subject to amortization	The following table provides information for intangible assets subject to amortization as of the dates indicated (in thousands): September 30, December 31, Amortizable intangible assets: Core deposit intangibles — gross $ 63,685 37,953 Acquisitions — 25,732 Less: accumulated amortization (38,725 ) (34,378 ) Core deposit intangibles — net 24,960 29,307 Customer and Contract intangible assets — gross 10,474 8,496 Acquisitions — 1,978 Less: accumulated amortization (8,190 ) (7,348 ) Customer and Contract intangible assets — net $ 2,284 3,126
Schedule of the actual aggregate amortization expense as well as estimated aggregate amortization expense, based upon current levels of intangible assets	The following table shows the actual aggregate amortization expense for the quarters and nine months ended September 30, 2017 and 2016 , as well as the estimated aggregate amortization expense, based upon current levels of intangible assets, for the current fiscal year and each of the five succeeding fiscal years (in thousands): For the quarter ended September 30, 2017 $ 1,691 For the quarter ended September 30, 2016 1,068 For the nine months ended September 30, 2017 5,189 For the nine months ended September 30, 2016 2,453 For the year ending December 31, 2017 6,764 For the year ending December 31, 2018 5,848 For the year ending December 31, 2019 4,933 For the year ending December 31, 2020 4,017 For the year ending December 31, 2021 3,188 For the year ending December 31, 2022 2,456
Schedule of the changes in carrying amount of goodwill	The following table provides information for the changes in the carrying amount of goodwill (in thousands): Total Balance at December 31, 2015 261,736 Goodwill acquired 45,684 Balance at December 31, 2016 307,420 Goodwill acquired — Impairment losses — Balance at September 30, 2017 307,420

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	The computation of basic and diluted earnings per share follows (in thousands, except share data and per share amounts): Quarter ended Nine months ended 2017 2016 2017 2016 Reported net income $ 23,591 14,197 72,319 25,173 Weighted average common shares outstanding 101,163,534 99,602,535 100,921,322 99,224,565 Dilutive potential shares due to effect of stock options 1,400,942 1,465,710 1,617,020 1,008,942 Total weighted average common shares and dilutive potential shares 102,564,476 101,068,245 102,538,342 100,233,507 Basic earnings per share: $ 0.23 0.14 0.72 0.25 Diluted earnings per share: $ 0.23 0.14 0.71 0.25

Pension and Other Post-retire29

Pension and Other Post-retirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2017
Retirement Benefits [Abstract]
Schedule of net periodic costs for the defined benefit pension plans and the post retirement healthcare plans	The following table sets forth the net periodic costs for the defined benefit pension plans and post retirement healthcare plans for the periods indicated (in thousands): Components of net periodic benefit cost Quarter ended September 30, Pension benefits Other post-retirement benefits 2017 2016 2017 2016 Service cost $ 1,537 1,374 — — Interest cost 1,719 1,695 17 18 Expected return on plan assets (2,628 ) (2,474 ) — — Amortization of prior service cost (580 ) (581 ) — — Amortization of the net loss 928 927 27 22 Net periodic cost $ 976 941 44 40 Nine Months Ended September 30, 2016 Pension benefits Other post-retirement benefits 2017 2016 2017 2016 Service cost $ 4,612 4,122 — — Interest cost 5,159 5,087 51 53 Expected return on plan assets (7,884 ) (7,423 ) — — Amortization of prior service cost (1,742 ) (1,742 ) — — Amortization of the net loss 2,783 2,782 81 67 Net periodic cost $ 2,928 2,826 132 120

Disclosures About Fair Value 30

Disclosures About Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of the carrying amount and estimated fair value of the entity's financial instruments included in the consolidated statement of financial condition	The following table sets forth the carrying amount and estimated fair value of our financial instruments included in the consolidated statement of financial condition at September 30, 2017 (in thousands): Carrying amount Estimated fair value Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 165,676 165,676 165,676 — — Securities available-for-sale 869,481 869,481 949 857,873 10,659 Securities held-to-maturity 31,961 32,282 — 32,282 — Loans receivable, net 7,669,211 7,746,906 1,382 — 7,745,524 Accrued interest receivable 22,802 22,802 22,802 — — FHLB Stock 7,984 7,984 — — — Total financial assets $ 8,767,115 8,845,131 190,809 890,155 7,756,183 Financial liabilities: Savings and checking deposits $ 6,506,184 6,506,184 6,506,184 — — Time deposits 1,435,861 1,455,485 — — 1,455,485 Borrowed funds 115,388 115,388 115,388 — — Junior subordinated debentures 111,213 112,954 — — 112,954 Cash flow hedges - swaps 1,538 1,538 — 1,538 — Accrued interest payable 518 518 518 — — Total financial liabilities $ 8,170,702 8,192,067 6,622,090 1,538 1,568,439 The following table sets forth the carrying amount and estimated fair value of our financial instruments included in the consolidated statement of financial condition at December 31, 2016 (in thousands): Carrying amount Estimated fair value Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 389,867 389,867 389,867 — — Securities available-for-sale 826,200 826,200 4,440 812,394 9,366 Securities held-to-maturity 19,978 20,426 — 20,426 — Loans receivable, net 7,496,408 7,878,815 9,625 — 7,869,190 Assets held-for-sale 146,660 146,660 146,660 — — Accrued interest receivable 21,699 21,699 21,699 — — FHLB Stock 7,390 7,390 — — — Total financial assets $ 8,908,202 9,291,057 572,291 832,820 7,878,556 Financial liabilities: Savings and checking accounts $ 6,341,735 6,341,735 6,341,735 — — Time deposits 1,540,586 1,626,434 — — 1,626,434 Liabilities held-for-sale 215,649 215,649 215,649 — — Borrowed funds 142,899 142,899 142,899 — — Junior subordinated debentures 111,213 113,313 — — 113,313 Cash flow hedges - swaps 2,736 2,736 — 2,736 — Accrued interest payable 643 643 643 — — Total financial liabilities $ 8,355,461 8,443,409 6,700,926 2,736 1,739,747
Schedule of assets and liabilities measured at fair value on a recurring basis	The following table represents assets and liabilities measured at fair value on a recurring basis at September 30, 2017 (in thousands): Level 1 Level 2 Level 3 Total assets at fair value Equity securities $ 949 — — 949 Debt securities: U.S. government and agencies — 2 — 2 Government sponsored enterprises — 241,599 — 241,599 States and political subdivisions — 53,214 — 53,214 Corporate — 8,019 10,659 18,678 Total debt securities — 302,834 10,659 313,493 Residential mortgage-backed securities: GNMA — 28,388 — 28,388 FNMA — 82,023 — 82,023 FHLMC — 68,234 — 68,234 Non-agency — 560 — 560 Collateralized mortgage obligations: GNMA — 5,152 — 5,152 FNMA — 202,459 — 202,459 FHLMC — 168,182 — 168,182 SBA — — — — Non-agency — 41 — 41 Total mortgage-backed securities — 555,039 — 555,039 Interest rate swaps — (1,538 ) — (1,538 ) Total assets and liabilities $ 949 856,335 10,659 867,943 The following table represents assets and liabilities measured at fair value on a recurring basis at December 31, 2016 (in thousands): Level 1 Level 2 Level 3 Total assets at fair value Equity securities $ 4,440 — — 4,440 Debt securities: U.S. government and agencies — 6 — 6 Government sponsored enterprises — 294,170 — 294,170 States and political subdivisions — 63,070 — 63,070 Corporate — 7,614 9,366 16,980 Total debt securities — 364,860 9,366 374,226 Residential mortgage-backed securities: GNMA — 30,883 — 30,883 FNMA — 106,578 — 106,578 FHLMC — 82,115 — 82,115 Non-agency — 579 — 579 Collateralized mortgage obligations: GNMA — 6,287 — 6,287 FNMA — 95,186 — 95,186 FHLMC — 119,197 — 119,197 SBA — 6,608 — 6,608 Non-agency — 101 — 101 Total mortgage-backed securities — 447,534 — 447,534 Interest rate swaps — (2,736 ) — (2,736 ) Total assets and liabilities $ 4,440 809,658 9,366 823,464
Schedule of reconciliation of debt securities measured at fair value on a recurring basis using significant unobservable inputs (Level 3)	The table below presents a reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the periods indicated (in thousands): Quarter ended Nine Months Ended September 30, September 30, September 30, September 30, Beginning balance $ 10,638 8,719 9,366 8,955 Net change in unrealized appreciation: Included in net income as OTTI — — — Included in other comprehensive income 21 510 1,293 274 Purchases — — — — Sales — — — — Transfers in to Level 3 — — — — Transfers out of Level 3 — — — — Ending balance $ 10,659 9,229 10,659 9,229
Schedule of fair value measurement for nonrecurring assets	The following table represents the fair value measurement for nonrecurring assets at September 30, 2017 (in thousands): Level 1 Level 2 Level 3 Total assets at fair value Loans measured for impairment $ — — 38,907 38,907 Real estate owned — — 5,462 5,462 Total assets $ — — 44,369 44,369 The following table represents the fair value measurement for nonrecurring assets at December 31, 2016 (in thousands): Level 1 Level 2 Level 3 Total assets at fair value Loans measured for impairment $ — — 41,933 41,933 Mortgage loan servicing — — 246 246 Real estate owned — — 4,889 4,889 Total assets $ — — 47,068 47,068
Schedule of quantitative information about assets measured at fair value on a recurring and nonrecurring basis for Level 3 Fair Value Measurements	The table presents additional quantitative information about assets measured at fair value on a recurring and nonrecurring basis and for which we have utilized Level 3 inputs to determine fair value at September 30, 2017 (dollar amounts in thousands): Fair value Valuation techniques Significant unobservable inputs Range (weighted average) Debt securities $ 10,659 Discounted cash Discount margin 0.4% to 2.1% (0.7%) flow Default rates 1.0% Prepayment speeds 1.0 annually Loans measured for impairment 38,907 Appraisal value (1) Estimated cost to sell 10.0% Discounted cash flow Discount rate 4.25% to 10.0% (7.50%) Real estate owned 5,462 Appraisal value (1) Estimated cost to sell 10.0% (1) Fair value is generally determined through independent appraisals of the underlying collateral, which may include level 3 inputs that are not identifiable, or by using the discounted cash flow method if the loan is not collateral dependent.

Guaranteed Preferred Benefici31

Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Derivatives (Tables)	9 Months Ended
	Sep. 30, 2017
Guaranteed Preferred Beneficial Interests in Company's Junior Subordinated Deferrable Interest Debentures (Trust-Preferred Securities) and Derivatives
Schedule of liability derivatives included in other liabilities	The following table sets forth information related to derivatives at September 30, 2017 and December 31, 2016 (in thousands): September 30, December 31, Derivatives designed as hedging instruments: Fair value (1) $ 1,538 2,736 Notional amount 50,000 50,000 Collateral posted 2,055 3,005 Derivatives not designed as hedging instruments: Foreign exchange fair value (2) 44 — Notional amount 4,578 — (1) Included in other liabilities. (2) Included in other asset s.

Changes in Accumulated Other 32

Changes in Accumulated Other Comprehensive Income/ (Loss) (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Schedule of changes in accumulated other comprehensive income by component	The following table shows the changes in accumulated other comprehensive income by component for the periods indicated (in thousands): For the quarter ended September 30, 2017 Unrealized gains and (losses) on securities available- for-sale Change in fair value of interest rate swaps Change in defined benefit pension plans Total Balance as of June 30, 2017 $ 2,276 (1,257 ) (26,167 ) (25,148 ) Other comprehensive income before reclassification adjustments (264 ) 258 — (6 ) Amounts reclassified from accumulated other comprehensive income (1), (2) (674 ) — 221 (453 ) Net other comprehensive income (938 ) 258 221 (459 ) Balance as of September 30, 2017 $ 1,338 (999 ) (25,946 ) (25,607 ) For the quarter ended September 30, 2016 Unrealized gains and (losses) on securities available- for-sale Change in fair value of interest rate swaps Change in defined benefit pension plans Total Balance as of June 30, 2016 $ 7,866 (2,753 ) (24,630 ) (19,517 ) Other comprehensive income before reclassification adjustments (785 ) 471 — (314 ) Amounts reclassified from accumulated other comprehensive income (3), (4) (36 ) — 224 188 Net other comprehensive income (821 ) 471 224 (126 ) Balance as of September 30, 2016 $ 7,045 (2,282 ) (24,406 ) (19,643 ) (1) Consists of realized gain on securities (gain on sales of investments, net) of $1,043 , net of tax (income tax expense) of $(369) . (2) Consists of amortization of prior service cost (compensation and employee benefits) of $580 and amortization of net loss (compensation and employee benefits) of $(954) , net of tax (income tax expense) of $153 . See note 9. (3) Consists of realized loss on securities (gain on sales of investments, net) of $59 , net of tax (income tax expense) of $(23) . (4) Consists of amortization of prior service cost (compensation and employee benefits) of $581 and amortization of net loss (compensation and employee benefits) of $(949) , net of tax (income tax expense) of $144 . See note 9. The following table shows the changes in accumulated other comprehensive income by component for the periods indicated (in thousands): For the nine months ended September 30, 2017 Unrealized gains and (losses) on securities available- for-sale Change in fair value of interest rate swaps Change in defined benefit pension plans Total Balance as of December 31, 2016 $ 395 (1,778 ) (26,608 ) (27,991 ) Other comprehensive income before reclassification adjustments 1,684 779 — 2,463 Amounts reclassified from accumulated other comprehensive income (1), (2) (741 ) — 662 (79 ) Net other comprehensive income 943 779 662 2,384 Balance as of September 30, 2017 $ 1,338 (999 ) (25,946 ) (25,607 ) For the nine months ended September 30, 2016 Unrealized gains and (losses) on securities available- for-sale Change in fair value of interest rate swaps Change in defined benefit pension plans Total Balance as of December 31, 2015 $ 3,325 (2,779 ) (25,081 ) (24,535 ) Other comprehensive income before reclassification adjustments 3,717 497 — 4,214 Amounts reclassified from accumulated other comprehensive income (3), (4) 3 — 675 678 Net other comprehensive income 3,720 497 675 4,892 Balance as of September 30, 2016 $ 7,045 (2,282 ) (24,406 ) (19,643 ) (1) Consists of realized gains on securities (gain on sales of investments, net) of $1,157 , net of tax (income tax expense) of $(416) . (2) Consists of amortization of prior service cost (compensation and employee benefits) of $1,742 and amortization of net loss (compensation and employee benefits) of $(2,864) , net of tax (income tax expense) of $460 . See note 9. (3) Consists of realized gains on securities (gain on sales of investments, net) of $(4) , net of tax (income tax expense) of $1 . (4) Consists of amortization of prior service cost (compensation and employee benefits) of $1,742 and amortization of net loss (compensation and employee benefits) of $(2,849) , net of tax (income tax expense) of $432 . See note 9.

Basis of Presentation and Inf33

Basis of Presentation and Informational Disclosures (Details)	May 17, 2017$ / sharesshares	Sep. 30, 2017USD ($)bank	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)bank	Sep. 30, 2016USD ($)
Stock Related Compensation
Number of banking locations | bank		173		173
Stock-Based Compensation
Options, grants in period (in shares) | shares	754,210
Options, grants in period, weighted average exercise price (in dollars per share) | $ / shares	$ 15.57
Options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.55
Options granted, award vesting period				10 years
Stock-based compensation expense | $		$ 1,100,000	$ 6,400,000	$ 3,700,000	$ 9,600,000
Income Taxes - Uncertain Tax Positions
Unrecognized tax benefits liability | $		0		0
Employee Stock Option
Stock-Based Compensation
Compensation expense yet to be recognized | $		4,400,000		4,400,000
Restricted common shares
Stock-Based Compensation
Restricted stock, grants in period (in shares) | shares	353,750
Restricted stock, grants in period, grant date fair value (in dollars per share) | $ / shares	$ 15.24
Compensation expense yet to be recognized | $		$ 17,700,000		$ 17,700,000
Director
Stock-Based Compensation
Options, grants in period (in shares) | shares	64,800
Director | Restricted common shares
Stock-Based Compensation
Restricted stock, grants in period (in shares) | shares	24,300

Business Segments (Details)

Business Segments (Details) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Jul. 13, 2017segment	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Segment Reporting [Abstract]
Number of reportable business segments | segment			2
Business Segments
External interest income	$ 90,231	$ 84,748		$ 267,295	$ 255,601
Intersegment interest income/ expense	0	0		0	0
Interest expense	6,994	7,454		20,750	31,208
Provision for loan losses	3,027	5,538		13,226	11,397
Noninterest income	24,594	20,818		87,575	60,541
Noninterest expense	68,799	73,680		213,707	239,077
Income tax expense/ (benefit)	12,414	4,697		34,868	9,287
Net income	23,591	14,197		72,319	25,173
Total assets	9,459,814	9,714,607		9,459,814	9,714,607	$ 9,623,640
Corporate and Reconciling Items
Business Segments
External interest income	45	239		127	689
Intersegment interest income/ expense	(138)	(645)		(1,473)	(1,918)
Interest expense	985	471		1,933	1,347
Provision for loan losses	0	0		0	0
Noninterest income	636	22		1,565	111
Noninterest expense	(635)	192		1,024	870
Income tax expense/ (benefit)	58	(376)		(985)	(1,192)
Net income	135	(671)		(1,753)	(2,143)
Total assets	10,084	14,519		10,084	14,519
Community Banking | Operating Segments
Business Segments
External interest income	89,711	80,245		259,160	242,081
Intersegment interest income/ expense	138	645		1,473	1,918
Interest expense	5,871	6,338		17,344	27,943
Provision for loan losses	8,693	4,276		15,371	8,854
Noninterest income	23,922	20,424		85,653	59,278
Noninterest expense	67,493	70,580		203,225	229,492
Income tax expense/ (benefit)	10,656	5,147		36,028	10,144
Net income	21,058	14,973		74,318	26,844
Total assets	9,404,881	9,590,487		9,404,881	9,590,487
Consumer Finance | Operating Segments
Business Segments
External interest income	475	4,264		8,008	12,831
Intersegment interest income/ expense	0	0		0	0
Interest expense	138	645		1,473	1,918
Provision for loan losses	(5,666)	1,262		(2,145)	2,543
Noninterest income	36	372		357	1,152
Noninterest expense	1,941	2,908		9,458	8,715
Income tax expense/ (benefit)	1,700	(74)		(175)	335
Net income	2,398	(105)		(246)	472
Total assets	$ 44,849	$ 109,601		$ 44,849	$ 109,601

Investment securities and imp35

Investment securities and impairment of investment securities - Available For Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Amortized cost
Total	$ 867,311	$ 825,552
Gross unrealized holding gains
Total	9,274	9,862
Gross unrealized holding losses
Total	(7,104)	(9,214)
Fair value
Fair value	869,481	826,200
U.S. government and agencies
Amortized cost
Due in one year or less	2	6
Gross unrealized holding gains
Due in one year or less	0	0
Gross unrealized holding losses
Due in one year or less	0	0
Fair value
Due in one year or less	2	6
Government sponsored enterprises
Amortized cost
Due in one year or less	96,608	74,980
Due in one year through five years	141,476	220,937
Due in five years through ten years	0	585
Due after ten years	5,304
Gross unrealized holding gains
Due in one year or less	36	5
Due in one year through five years	34	203
Due in five years through ten years	0	0
Due after ten years	0
Gross unrealized holding losses
Due in one year or less	(244)	(33)
Due in one year through five years	(1,543)	(2,504)
Due in five years through ten years	0	(3)
Due after ten years	(72)
Fair value
Due in one year or less	96,400	74,952
Due in one year through five years	139,967	218,636
Due in five years through ten years	0	582
Due after ten years	5,232
Equity securities
Amortized cost
Total	824	3,351
Gross unrealized holding gains
Total	131	1,095
Gross unrealized holding losses
Total	(6)	(6)
Fair value
Fair value	949	4,440
Municipal securities
Amortized cost
Due in one year or less	2,312	2,449
Due in one year through five years	7,472	9,448
Due in five years through ten years	12,315	11,794
Due after ten years	30,226	38,141
Gross unrealized holding gains
Due in one year or less	13	7
Due in one year through five years	142	105
Due in five years through ten years	165	137
Due after ten years	572	1,027
Gross unrealized holding losses
Due in one year or less	0	0
Due in one year through five years	(3)	(21)
Due in five years through ten years	0	(1)
Due after ten years	0	(16)
Fair value
Due in one year or less	2,325	2,456
Due in one year through five years	7,611	9,532
Due in five years through ten years	12,480	11,930
Due after ten years	30,798	39,152
Corporate debt securities
Amortized cost
Due after ten years	14,280	14,367
Gross unrealized holding gains
Due after ten years	4,611	2,935
Gross unrealized holding losses
Due after ten years	(213)	(322)
Fair value
Due after ten years	18,678	16,980
Residential mortgage-backed securities
Amortized cost
Total	556,492	449,494
Gross unrealized holding gains
Total	3,570	4,348
Gross unrealized holding losses
Total	(5,023)	(6,308)
Fair value
Fair value	555,039	447,534
Fixed rate | Pass-through
Amortized cost
Total	143,106	175,398
Gross unrealized holding gains
Total	1,460	1,849
Gross unrealized holding losses
Total	(2,070)	(2,680)
Fair value
Fair value	142,496	174,567
Fixed rate | Non-agency CMOs
Amortized cost
Total	41	100
Gross unrealized holding gains
Total	0	1
Gross unrealized holding losses
Total	0	0
Fair value
Fair value	41	101
Fixed rate | Agency CMOs
Amortized cost
Total	300,741	165,535
Gross unrealized holding gains
Total	263	185
Gross unrealized holding losses
Total	(2,855)	(3,455)
Fair value
Fair value	298,149	162,265
Variable rate | Pass-through
Amortized cost
Total	35,140	43,587
Gross unrealized holding gains
Total	1,573	2,007
Gross unrealized holding losses
Total	(4)	(6)
Fair value
Fair value	36,709	45,588
Variable rate | Agency CMOs
Amortized cost
Total	77,464	64,874
Gross unrealized holding gains
Total	274	306
Gross unrealized holding losses
Total	(94)	(167)
Fair value
Fair value	$ 77,644	$ 65,013

Investment securities and imp36

Investment securities and impairment of investment securities - Held To Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Amortized cost
Total	$ 31,961	$ 19,978
Gross unrealized holding gains
Total	346	448
Gross unrealized holding losses
Total	(25)	0
Fair value
Total	32,282	20,426
Municipal securities
Amortized cost
Due after ten years		4,808
Gross unrealized holding gains
Due after ten years		65
Gross unrealized holding losses
Due after ten years		0
Fair value
Due after ten years		4,873
Residential mortgage-backed securities
Amortized cost
Total	31,961	15,170
Gross unrealized holding gains
Total	346	383
Gross unrealized holding losses
Total	(25)	0
Fair value
Total	32,282	15,553
Fixed rate | Pass-through
Amortized cost
Total	3,971	4,807
Gross unrealized holding gains
Total	189	217
Gross unrealized holding losses
Total	0	0
Fair value
Total	4,160	5,024
Fixed rate | Agency CMOs
Amortized cost
Total	24,791	6,674
Gross unrealized holding gains
Total	87	94
Gross unrealized holding losses
Total	(25)	0
Fair value
Total	24,853	6,768
Variable rate | Pass-through
Amortized cost
Total	2,412	2,848
Gross unrealized holding gains
Total	57	58
Gross unrealized holding losses
Total	0	0
Fair value
Total	2,469	2,906
Variable rate | Agency CMOs
Amortized cost
Total	787	841
Gross unrealized holding gains
Total	13	14
Gross unrealized holding losses
Total	0	0
Fair value
Total	$ 800	$ 855

Investment securities and imp37

Investment securities and impairment of investment securities - Fair Value of and Gross Unrealized Losses on Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Marketable securities
Less than 12 months - Fair value	$ 252,491	$ 457,286
Less than 12 months - Unrealized loss	(978)	(6,322)
12 months or more - Fair value	354,674	99,645
12 months or more - Unrealized loss	(6,151)	(2,892)
Total - Fair value	607,165	556,931
Total - Unrealized loss	(7,129)	(9,214)
U.S. government and agencies
Marketable securities
Less than 12 months - Fair value	55,288	238,003
Less than 12 months - Unrealized loss	(161)	(2,448)
12 months or more - Fair value	174,633	9,205
12 months or more - Unrealized loss	(1,698)	(92)
Total - Fair value	229,921	247,208
Total - Unrealized loss	(1,859)	(2,540)
Municipal securities
Marketable securities
Less than 12 months - Fair value	1,735	5,621
Less than 12 months - Unrealized loss	(3)	(37)
12 months or more - Fair value	0	66
12 months or more - Unrealized loss	0	(1)
Total - Fair value	1,735	5,687
Total - Unrealized loss	(3)	(38)
Corporate debt securities
Marketable securities
Less than 12 months - Fair value	0	0
Less than 12 months - Unrealized loss	0	0
12 months or more - Fair value	2,220	2,107
12 months or more - Unrealized loss	(213)	(322)
Total - Fair value	2,220	2,107
Total - Unrealized loss	(213)	(322)
Equity securities
Marketable securities
Less than 12 months - Fair value	0	0
Less than 12 months - Unrealized loss	0	0
12 months or more - Fair value	544	544
12 months or more - Unrealized loss	(6)	(6)
Total - Fair value	544	544
Total - Unrealized loss	(6)	(6)
Residential mortgage-backed securities | Agency CMOs
Marketable securities
Less than 12 months - Fair value	195,468	213,662
Less than 12 months - Unrealized loss	(814)	(3,837)
12 months or more - Fair value	177,277	87,723
12 months or more - Unrealized loss	(4,234)	(2,471)
Total - Fair value	372,745	301,385
Total - Unrealized loss	$ (5,048)	$ (6,308)

Investment securities and imp38

Investment securities and impairment of investment securities - Cumulative Roll Forward of Credit Losses Recognized in Earnings for Debt Securities Held and Not Intended to be Sold (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Cumulative roll forward of credit related impairment losses recognized in earnings for debt securities held and not intended to be sold:
Beginning balance	$ 7,942	$ 8,408	$ 7,942	$ 8,436
Credit losses on debt securities for which other-than-temporary impairment was not previously recognized	0	0	0	0
Reduction for losses realized during the quarter	0	(16)	0	(44)
Reduction for securities sold/ called realized during the quarter	0	0	0	0
Additional credit losses on debt securities for which other-than-temporary impairment was previously recognized	0	0	0	0
Ending balance	$ 7,942	$ 8,392	$ 7,942	$ 8,392

Loans receivable - Summary of O

Loans receivable - Summary of Originated and Acquired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	$ 7,866,586		$ 7,746,648
Deferred loan costs	26,506		22,375
Allowance for loan losses	(56,927)	$ (62,885)	(60,939)	$ (63,246)	$ (60,781)	$ (62,672)
Total loans, net	7,669,211		7,496,408
Residential mortgage loans held-for-sale	1,382		9,625
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Undisbursed loan proceeds	(13,146)		(11,638)
Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Undisbursed loan proceeds	(124,005)		(171,580)
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Undisbursed loan proceeds	(29,803)		(28,458)
Personal Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	4,717,221		4,675,760
Personal Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	2,743,679		2,699,131
Residential mortgage loans held-for-sale	1,400		9,600
Personal Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,313,435		1,345,370
Personal Banking | Consumer finance loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	26,892		48,981
Personal Banking | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	633,215		582,278
Commercial Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	3,149,365		3,070,888
Commercial Banking | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	2,522,891		2,513,669
Commercial Banking | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	626,474		557,219
Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	6,986,313		6,698,391
Deferred loan costs	24,707		20,081
Allowance for loan losses	(50,845)	(56,627)	(55,293)	(58,024)	(55,323)	(60,970)
Total loans, net	6,797,194		6,456,778
Originated | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Undisbursed loan proceeds	(13,146)		(11,638)
Originated | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Undisbursed loan proceeds	(121,316)		(168,595)
Originated | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Undisbursed loan proceeds	(28,519)		(26,168)
Originated | Personal Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	4,218,864		4,076,170
Allowance for loan losses	(19,540)	(17,339)	(16,116)	(16,617)	(14,281)	(16,121)
Originated | Personal Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	2,624,216		2,565,620
Allowance for loan losses	(3,986)	(4,635)	(4,656)	(4,002)	(3,022)	(4,692)
Originated | Personal Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	1,045,152		1,042,913
Allowance for loan losses	(3,295)	(2,957)	(3,486)	(3,519)	(3,335)	(3,941)
Originated | Personal Banking | Consumer finance loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	26,892		48,981
Allowance for loan losses	(4,876)	(4,467)	(3,445)	(3,429)	(3,139)	(3,275)
Originated | Personal Banking | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	522,604		418,656
Allowance for loan losses	(7,383)	(5,280)	(4,529)	(5,667)	(4,785)	(4,213)
Originated | Commercial Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	2,767,449		2,622,221
Allowance for loan losses	(31,305)	(39,288)	(39,177)	(41,407)	(41,042)	(44,849)
Originated | Commercial Banking | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	2,210,699		2,140,678
Allowance for loan losses	(20,174)	(22,584)	(23,667)	(24,530)	(25,686)	(32,348)
Originated | Commercial Banking | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	556,750		481,543
Allowance for loan losses	(11,131)	(16,704)	(15,510)	(16,877)	(15,356)	(12,501)
Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	880,273		1,048,257
Deferred loan costs	1,799		2,294
Allowance for loan losses	(6,082)	(6,258)	(5,646)	(5,222)	(5,458)	(1,702)
Total loans, net	872,017		1,039,630
Acquired | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Undisbursed loan proceeds	0		0
Acquired | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Undisbursed loan proceeds	(2,689)		(2,985)
Acquired | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Undisbursed loan proceeds	(1,284)		(2,290)
Acquired | Personal Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	498,357		599,590
Allowance for loan losses	(1,419)	(1,336)	(1,771)	(1,893)	(1,741)	(229)
Acquired | Personal Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	119,463		133,511
Allowance for loan losses	(77)	(85)	(71)	(78)	(61)	(18)
Acquired | Personal Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	268,283		302,457
Allowance for loan losses	(748)	(623)	(1,047)	(1,171)	(1,128)	(101)
Acquired | Personal Banking | Consumer finance loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	0		0
Acquired | Personal Banking | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	110,611		163,622
Allowance for loan losses	(594)	(628)	(653)	(644)	(552)	(110)
Acquired | Commercial Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	381,916		448,667
Allowance for loan losses	(4,663)	(4,922)	(3,875)	(3,329)	(3,717)	(1,473)
Acquired | Commercial Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses				(2,422)	(3,165)
Acquired | Commercial Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses				(907)	$ (552)
Acquired | Commercial Banking | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	312,192		372,991
Allowance for loan losses	(3,301)	(2,446)	(3,008)	(2,422)		(1,439)
Acquired | Commercial Banking | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable, gross	69,724		75,676
Allowance for loan losses	$ (1,362)	$ (2,476)	$ (867)	$ (907)		$ (34)

Loans receivable - Outstanding

Loans receivable - Outstanding Principal Balance and Related Carrying Value of Acquired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding principal balance	$ 887,366	$ 1,056,486
Carrying value	878,098	1,045,276
Acquired loans evaluated individually for future credit losses
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding principal balance	10,344	16,108
Carrying value	7,393	12,665
Acquired loans evaluated collectively for future credit losses
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding principal balance	877,022	1,040,378
Carrying value	$ 870,705	$ 1,032,611

Loans receivable - Changes in t

Loans receivable - Changes in the Accretable Discount (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Changes in accretable yield
Beginning balance	$ 2,187	$ 2,019
Accretion	(1,130)	(1,170)
Net reclassification from nonaccretable yield	498	1,338
Ending balance	$ 1,555	$ 2,187

Loans receivable - Composition

Loans receivable - Composition of Acquired Impaired Loans by Portfolio Segment and by Class of Financing Receivable (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	$ 94,565	$ 108,061
Average recorded investment in impaired loans	99,929	118,675
Interest income recognized	3,098	5,596
Personal Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	33,665	38,606
Average recorded investment in impaired loans	34,714	37,420
Interest income recognized	1,173	1,741
Personal Banking | Residential mortgage loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	20,089	24,193
Average recorded investment in impaired loans	21,521	24,483
Interest income recognized	706	1,079
Personal Banking | Home equity loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	9,135	9,304
Average recorded investment in impaired loans	8,878	9,234
Interest income recognized	320	496
Personal Banking | Consumer loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	4,108	4,366
Average recorded investment in impaired loans	3,887	2,931
Interest income recognized	132	131
Commercial Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	60,900	69,455
Average recorded investment in impaired loans	65,215	81,255
Interest income recognized	1,925	3,855
Commercial Banking | Commercial real estate loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	49,232	53,928
Average recorded investment in impaired loans	52,813	64,350
Interest income recognized	1,381	2,864
Commercial Banking | Commercial loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	11,668	15,527
Average recorded investment in impaired loans	12,402	16,905
Interest income recognized	544	991
Acquired loans evaluated individually for future credit losses
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	7,393	12,665
Outstanding principal balance	10,344	16,108
Related impairment reserve	117	267
Average recorded investment in impaired loans	10,029	14,766
Interest income recognized	1,130	1,170
Acquired loans evaluated individually for future credit losses | Personal Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	2,461	2,818
Outstanding principal balance	4,403	5,034
Related impairment reserve	50	215
Average recorded investment in impaired loans	2,639	3,575
Interest income recognized	293	438
Acquired loans evaluated individually for future credit losses | Personal Banking | Residential mortgage loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	1,215	1,319
Outstanding principal balance	1,931	2,062
Related impairment reserve	37	204
Average recorded investment in impaired loans	1,267	1,650
Interest income recognized	126	202
Acquired loans evaluated individually for future credit losses | Personal Banking | Home equity loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	1,166	1,363
Outstanding principal balance	2,274	2,669
Related impairment reserve	9	8
Average recorded investment in impaired loans	1,264	1,724
Interest income recognized	124	185
Acquired loans evaluated individually for future credit losses | Personal Banking | Consumer loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	80	136
Outstanding principal balance	198	303
Related impairment reserve	4	3
Average recorded investment in impaired loans	108	201
Interest income recognized	43	51
Acquired loans evaluated individually for future credit losses | Commercial Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	4,932	9,847
Outstanding principal balance	5,941	11,074
Related impairment reserve	67	52
Average recorded investment in impaired loans	7,390	11,191
Interest income recognized	837	732
Acquired loans evaluated individually for future credit losses | Commercial Banking | Commercial real estate loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	4,828	9,596
Outstanding principal balance	5,826	10,809
Related impairment reserve	67	52
Average recorded investment in impaired loans	7,212	10,942
Interest income recognized	823	721
Acquired loans evaluated individually for future credit losses | Commercial Banking | Commercial loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Carrying value	104	251
Outstanding principal balance	115	265
Related impairment reserve	0	0
Average recorded investment in impaired loans	178	249
Interest income recognized	$ 14	$ 11

Loans receivable - Changes in43

Loans receivable - Changes in the Allowance for Losses on Loans Receivable (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	$ 62,885	$ 60,781	$ 60,939	$ 62,672
Current period provision	3,027	5,538	13,226	11,397
Charge-offs	(10,046)	(4,840)	(22,222)	(17,569)
Recoveries	1,061	1,767	4,984	6,746
Balance at the end of the period	56,927	63,246	56,927	63,246
Originated
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	56,627	55,323	55,293	60,970
Current period provision	993	5,377	9,071	5,485
Charge-offs	(7,598)	(4,274)	(17,218)	(14,172)
Recoveries	823	1,598	3,699	5,741
Balance at the end of the period	50,845	58,024	50,845	58,024
Originated | Personal Banking
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	17,339	14,281	16,116	16,121
Current period provision	8,967	4,750	16,576	9,233
Charge-offs	(7,231)	(2,964)	(14,862)	(10,365)
Recoveries	465	550	1,710	1,628
Balance at the end of the period	19,540	16,617	19,540	16,617
Originated | Personal Banking | Residential mortgage loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	4,635	3,022	4,656	4,692
Current period provision	(462)	1,109	(278)	1,612
Charge-offs	(211)	(268)	(678)	(2,559)
Recoveries	24	139	286	257
Balance at the end of the period	3,986	4,002	3,986	4,002
Originated | Personal Banking | Home equity loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	2,957	3,335	3,486	3,941
Current period provision	615	296	503	253
Charge-offs	(285)	(161)	(803)	(898)
Recoveries	8	49	109	223
Balance at the end of the period	3,295	3,519	3,295	3,519
Originated | Personal Banking | Consumer finance loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	4,467	3,139	3,445	3,275
Current period provision	4,220	1,014	6,610	2,163
Charge-offs	(3,891)	(835)	(5,469)	(2,321)
Recoveries	80	111	290	312
Balance at the end of the period	4,876	3,429	4,876	3,429
Originated | Personal Banking | Consumer loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	5,280	4,785	4,529	4,213
Current period provision	4,594	2,331	9,741	5,205
Charge-offs	(2,844)	(1,700)	(7,912)	(4,587)
Recoveries	353	251	1,025	836
Balance at the end of the period	7,383	5,667	7,383	5,667
Originated | Commercial Banking
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	39,288	41,042	39,177	44,849
Current period provision	(7,974)	627	(7,505)	(3,748)
Charge-offs	(367)	(1,310)	(2,356)	(3,807)
Recoveries	358	1,048	1,989	4,113
Balance at the end of the period	31,305	41,407	31,305	41,407
Originated | Commercial Banking | Commercial real estate loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	22,584	25,686	23,667	32,348
Current period provision	(2,529)	(1,041)	(3,988)	(8,756)
Charge-offs	(163)	(602)	(498)	(2,103)
Recoveries	282	487	993	3,041
Balance at the end of the period	20,174	24,530	20,174	24,530
Originated | Commercial Banking | Commercial loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	16,704	15,356	15,510	12,501
Current period provision	(5,445)	1,668	(3,517)	5,008
Charge-offs	(204)	(708)	(1,858)	(1,704)
Recoveries	76	561	996	1,072
Balance at the end of the period	11,131	16,877	11,131	16,877
Acquired
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	6,258	5,458	5,646	1,702
Current period provision	2,034	161	4,155	5,912
Charge-offs	(2,448)	(566)	(5,004)	(3,397)
Recoveries	238	169	1,285	1,005
Balance at the end of the period	6,082	5,222	6,082	5,222
Acquired | Personal Banking
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	1,336	1,741	1,771	229
Current period provision	419	395	1,047	3,136
Charge-offs	(405)	(379)	(1,951)	(2,059)
Recoveries	69	136	552	587
Balance at the end of the period	1,419	1,893	1,419	1,893
Acquired | Personal Banking | Residential mortgage loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	85	61	71	18
Current period provision	(11)	45	130	118
Charge-offs	(4)	(86)	(199)	(211)
Recoveries	7	58	75	153
Balance at the end of the period	77	78	77	78
Acquired | Personal Banking | Home equity loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	623	1,128	1,047	101
Current period provision	324	138	512	2,093
Charge-offs	(243)	(127)	(1,063)	(1,320)
Recoveries	44	32	252	297
Balance at the end of the period	748	1,171	748	1,171
Acquired | Personal Banking | Consumer loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	628	552	653	110
Current period provision	106	212	405	925
Charge-offs	(158)	(166)	(689)	(528)
Recoveries	18	46	225	137
Balance at the end of the period	594	644	594	644
Acquired | Commercial Banking
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	4,922	3,717	3,875	1,473
Current period provision	1,615	(234)	3,108	2,776
Charge-offs	(2,043)	(187)	(3,053)	(1,338)
Recoveries	169	33	733	418
Balance at the end of the period	4,663	3,329	4,663	3,329
Acquired | Commercial Banking | Residential mortgage loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period		3,165
Current period provision		(588)
Charge-offs		(187)
Recoveries		32
Balance at the end of the period		2,422		2,422
Acquired | Commercial Banking | Home equity loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period		552
Current period provision		354
Charge-offs		0
Recoveries		1
Balance at the end of the period		907		907
Acquired | Commercial Banking | Commercial real estate loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	2,446		3,008	1,439
Current period provision	2,433		1,832	1,886
Charge-offs	(1,738)		(2,206)	(1,314)
Recoveries	160		667	411
Balance at the end of the period	3,301	2,422	3,301	2,422
Acquired | Commercial Banking | Commercial loans
Changes in allowance for losses on allocated loans receivable
Balance at the beginning of the period	2,476		867	34
Current period provision	(818)		1,276	890
Charge-offs	(305)		(847)	(24)
Recoveries	9		66	7
Balance at the end of the period	$ 1,362	$ 907	$ 1,362	$ 907

Loans receivable - Loan Portfol

Loans receivable - Loan Portfolio by Portfolio Segment and by Class of Financing Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	$ 7,726,138		$ 7,557,347
Allowance for loan losses	56,927		60,939
Nonaccrual loans	73,334		79,536
Loans past due 90 days or more and still accruing	398		649
TDRs (3)	38,469	$ 41,860	42,926	$ 46,595	$ 49,113	$ 51,115
Allowance related to TDRs	4,184		4,590
Additional commitments to customers with loans classified as TDRs	279		438
Nonaccrual TDRs	17,809		16,300	17,374
Accruing TDRs	20,660		26,600	$ 29,221
Personal Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	4,730,581		4,686,497
Allowance for loan losses	20,959		17,887
Nonaccrual loans	25,335		31,238
Loans past due 90 days or more and still accruing	398		85
TDRs (3)	9,588		9,112
Allowance related to TDRs	1,233		1,158
Additional commitments to customers with loans classified as TDRs	4		4
Personal Banking | Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	2,743,226		2,698,166
Allowance for loan losses	4,063		4,727
Nonaccrual loans	13,195		18,264
Loans past due 90 days or more and still accruing	0		0
TDRs (3)	7,807		7,299
Allowance related to TDRs	782		708
Additional commitments to customers with loans classified as TDRs	0		0
Personal Banking | Home equity loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	1,313,435		1,345,370
Allowance for loan losses	4,043		4,533
Nonaccrual loans	7,699		7,865
Loans past due 90 days or more and still accruing	146		0
TDRs (3)	1,781		1,813
Allowance related to TDRs	451		450
Additional commitments to customers with loans classified as TDRs	4		4
Personal Banking | Consumer finance loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	26,892		48,981
Allowance for loan losses	4,876		3,445
Nonaccrual loans	333		743
Loans past due 90 days or more and still accruing	0		0
TDRs (3)	0		0
Allowance related to TDRs	0		0
Additional commitments to customers with loans classified as TDRs	0		0
Personal Banking | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	647,028		593,980
Allowance for loan losses	7,977		5,182
Nonaccrual loans	4,108		4,366
Loans past due 90 days or more and still accruing	252		85
TDRs (3)	0		0
Allowance related to TDRs	0		0
Additional commitments to customers with loans classified as TDRs	0		0
Commercial Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	2,995,557		2,870,850
Allowance for loan losses	35,968		43,052
Nonaccrual loans	47,999		48,298
Loans past due 90 days or more and still accruing	0		564
TDRs (3)	28,881		33,814
Allowance related to TDRs	2,951		3,432
Additional commitments to customers with loans classified as TDRs	275		434
Commercial Banking | Commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	2,398,886		2,342,089
Allowance for loan losses	23,475		26,675
Nonaccrual loans	39,721		38,724
Loans past due 90 days or more and still accruing	0		564
TDRs (3)	22,173		24,483
Allowance related to TDRs	1,926		2,072
Additional commitments to customers with loans classified as TDRs	252		417
Commercial Banking | Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	596,671		528,761
Allowance for loan losses	12,493		16,377
Nonaccrual loans	8,278		9,574
Loans past due 90 days or more and still accruing	0		0
TDRs (3)	6,708		9,331
Allowance related to TDRs	1,025		1,360
Additional commitments to customers with loans classified as TDRs	$ 23		$ 17

Loans receivable - Compositio45

Loans receivable - Composition of Impaired Loans by Portfolio Segment and Class of Financing Receivable (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	$ 73,334	$ 79,536
Total impaired loans	94,565	108,061
Average recorded investment in impaired loans	99,929	118,675
Interest income recognized on impaired loans	3,098	5,596
Personal Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	25,335	31,238
Total impaired loans	33,665	38,606
Average recorded investment in impaired loans	34,714	37,420
Interest income recognized on impaired loans	1,173	1,741
Personal Banking | Residential mortgage loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	13,195	18,264
Total impaired loans	20,089	24,193
Average recorded investment in impaired loans	21,521	24,483
Interest income recognized on impaired loans	706	1,079
Personal Banking | Home equity loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	7,699	7,865
Total impaired loans	9,135	9,304
Average recorded investment in impaired loans	8,878	9,234
Interest income recognized on impaired loans	320	496
Personal Banking | Consumer finance loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	333	743
Total impaired loans	333	743
Average recorded investment in impaired loans	428	772
Interest income recognized on impaired loans	15	35
Personal Banking | Consumer loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	4,108	4,366
Total impaired loans	4,108	4,366
Average recorded investment in impaired loans	3,887	2,931
Interest income recognized on impaired loans	132	131
Commercial Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	47,999	48,298
Total impaired loans	60,900	69,455
Average recorded investment in impaired loans	65,215	81,255
Interest income recognized on impaired loans	1,925	3,855
Commercial Banking | Commercial real estate loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	39,721	38,724
Total impaired loans	49,232	53,928
Average recorded investment in impaired loans	52,813	64,350
Interest income recognized on impaired loans	1,381	2,864
Commercial Banking | Commercial loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	8,278	9,574
Total impaired loans	11,668	15,527
Average recorded investment in impaired loans	12,402	16,905
Interest income recognized on impaired loans	544	991
90 Days or greater delinquent
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	48,416	45,181
90 Days or greater delinquent | Personal Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	21,656	22,544
90 Days or greater delinquent | Personal Banking | Residential mortgage loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	11,785	13,169
90 Days or greater delinquent | Personal Banking | Home equity loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	6,295	5,552
90 Days or greater delinquent | Personal Banking | Consumer finance loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	332	743
90 Days or greater delinquent | Personal Banking | Consumer loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	3,244	3,080
90 Days or greater delinquent | Commercial Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	26,760	22,637
90 Days or greater delinquent | Commercial Banking | Commercial real estate loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	22,583	19,264
90 Days or greater delinquent | Commercial Banking | Commercial loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	4,177	3,373
Less than 90 days delinquent
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	24,918	34,355
Loans less than 90 days delinquent reviewed for impairment	5,650	6,459
TDRs less than 90 days delinquent not included elsewhere	15,581	22,066
Less than 90 days delinquent | Personal Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	3,679	8,694
Loans less than 90 days delinquent reviewed for impairment	0	0
TDRs less than 90 days delinquent not included elsewhere	8,330	7,368
Less than 90 days delinquent | Personal Banking | Residential mortgage loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	1,410	5,095
Loans less than 90 days delinquent reviewed for impairment	0	0
TDRs less than 90 days delinquent not included elsewhere	6,894	5,929
Less than 90 days delinquent | Personal Banking | Home equity loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	1,404	2,313
Loans less than 90 days delinquent reviewed for impairment	0	0
TDRs less than 90 days delinquent not included elsewhere	1,436	1,439
Less than 90 days delinquent | Personal Banking | Consumer finance loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	1	0
Loans less than 90 days delinquent reviewed for impairment	0	0
TDRs less than 90 days delinquent not included elsewhere	0	0
Less than 90 days delinquent | Personal Banking | Consumer loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	864	1,286
Loans less than 90 days delinquent reviewed for impairment	0	0
TDRs less than 90 days delinquent not included elsewhere	0	0
Less than 90 days delinquent | Commercial Banking
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	21,239	25,661
Loans less than 90 days delinquent reviewed for impairment	5,650	6,459
TDRs less than 90 days delinquent not included elsewhere	7,251	14,698
Less than 90 days delinquent | Commercial Banking | Commercial real estate loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	17,138	19,460
Loans less than 90 days delinquent reviewed for impairment	4,707	3,622
TDRs less than 90 days delinquent not included elsewhere	4,804	11,582
Less than 90 days delinquent | Commercial Banking | Commercial loans
Composition of impaired loans by portfolio segment and by class of financing receivable
Nonaccrual loans	4,101	6,201
Loans less than 90 days delinquent reviewed for impairment	943	2,837
TDRs less than 90 days delinquent not included elsewhere	$ 2,447	$ 3,116

Loans receivable - Evaluation o

Loans receivable - Evaluation of Impaired Loans by Portfolio Segment and by Class of Financing Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Evaluation of impaired loans by portfolio segment and by class of financing receivable
Loans collectively evaluated for impairment	$ 7,678,059	$ 7,503,912
Loans individually evaluated for impairment	48,079	53,435
Loans individually evaluated for impairment for which there is a related impairment reserve	44,722	48,056
Related impairment reserve	5,815	6,123
Loans individually evaluated for impairment for which there is no related reserve	3,357	5,379
Personal Banking
Evaluation of impaired loans by portfolio segment and by class of financing receivable
Loans collectively evaluated for impairment	4,720,232	4,676,277
Loans individually evaluated for impairment	10,349	10,220
Loans individually evaluated for impairment for which there is a related impairment reserve	10,349	10,220
Related impairment reserve	1,257	1,188
Loans individually evaluated for impairment for which there is no related reserve	0	0
Personal Banking | Residential mortgage loans
Evaluation of impaired loans by portfolio segment and by class of financing receivable
Loans collectively evaluated for impairment	2,734,753	2,689,886
Loans individually evaluated for impairment	8,473	8,280
Loans individually evaluated for impairment for which there is a related impairment reserve	8,473	8,280
Related impairment reserve	783	709
Loans individually evaluated for impairment for which there is no related reserve	0	0
Personal Banking | Home equity loans
Evaluation of impaired loans by portfolio segment and by class of financing receivable
Loans collectively evaluated for impairment	1,311,654	1,343,556
Loans individually evaluated for impairment	1,781	1,814
Loans individually evaluated for impairment for which there is a related impairment reserve	1,781	1,814
Related impairment reserve	451	450
Loans individually evaluated for impairment for which there is no related reserve	0	0
Personal Banking | Consumer finance loans
Evaluation of impaired loans by portfolio segment and by class of financing receivable
Loans collectively evaluated for impairment	26,892	48,981
Loans individually evaluated for impairment	0	0
Loans individually evaluated for impairment for which there is a related impairment reserve	0	0
Related impairment reserve	0	0
Loans individually evaluated for impairment for which there is no related reserve	0	0
Personal Banking | Consumer loans
Evaluation of impaired loans by portfolio segment and by class of financing receivable
Loans collectively evaluated for impairment	646,933	593,854
Loans individually evaluated for impairment	95	126
Loans individually evaluated for impairment for which there is a related impairment reserve	95	126
Related impairment reserve	23	29
Loans individually evaluated for impairment for which there is no related reserve	0	0
Commercial Banking
Evaluation of impaired loans by portfolio segment and by class of financing receivable
Loans collectively evaluated for impairment	2,957,827	2,827,635
Loans individually evaluated for impairment	37,730	43,215
Loans individually evaluated for impairment for which there is a related impairment reserve	34,373	37,836
Related impairment reserve	4,558	4,935
Loans individually evaluated for impairment for which there is no related reserve	3,357	5,379
Commercial Banking | Commercial real estate loans
Evaluation of impaired loans by portfolio segment and by class of financing receivable
Loans collectively evaluated for impairment	2,370,814	2,309,186
Loans individually evaluated for impairment	28,072	32,903
Loans individually evaluated for impairment for which there is a related impairment reserve	25,223	27,594
Related impairment reserve	3,028	3,545
Loans individually evaluated for impairment for which there is no related reserve	2,849	5,309
Commercial Banking | Commercial loans
Evaluation of impaired loans by portfolio segment and by class of financing receivable
Loans collectively evaluated for impairment	587,013	518,449
Loans individually evaluated for impairment	9,658	10,312
Loans individually evaluated for impairment for which there is a related impairment reserve	9,150	10,242
Related impairment reserve	1,530	1,390
Loans individually evaluated for impairment for which there is no related reserve	$ 508	$ 70

Loans receivable - Roll Forward

Loans receivable - Roll Forward of Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract	Dec. 31, 2016USD ($)
Number of contracts
Beginning balance | contract	203	230	225	227
Number of contracts new TDRs | contract	6	5	13	23
Number of re-modified TDRs | contract	2	1	3	5
Ending balance | contract	201	218	201	218
Amount
Beginning TDR balance	$ 41,860	$ 49,113	$ 42,926	$ 51,115
New TDRs	546	245	4,685	5,256
Re-modified TDRs	265	799	710	1,862
Net paydowns	(987)	(1,781)	(3,668)	(4,685)
Ending TDR balance	38,469	46,595	38,469	46,595
Accruing TDRs	20,660	29,221	20,660	29,221	$ 26,600
Non-accrual TDRs	$ 17,809	$ 17,374	$ 17,809	$ 17,374	$ 16,300
Residential mortgage loans
Number of contracts
Number of contracts charged off | contract	0	0	0	0
Number of contracts paid off | contract	0	3	0	3
Amount
Amount of contracts charged off	$ 0	$ 0	$ 0	$ 0
Amount of contracts paid off	$ 0	$ (143)	$ 0	$ (143)
Home equity loans
Number of contracts
Number of contracts charged off | contract	0	0	0	0
Number of contracts paid off | contract	3	2	8	5
Amount
Amount of contracts charged off	$ 0	$ 0	$ 0	$ 0
Amount of contracts paid off	$ (30)	$ (264)	$ (62)	$ (496)
Commercial real estate loans
Number of contracts
Number of contracts charged off | contract	2	0	2	0
Number of contracts paid off | contract	1	8	11	16
Amount
Amount of contracts charged off	$ (2,498)	$ 0	$ (2,498)	$ 0
Amount of contracts paid off	$ (564)	$ (1,022)	$ (1,109)	$ (5,584)
Commercial loans
Number of contracts
Number of contracts charged off | contract	0	1	6	2
Number of contracts paid off | contract	2	3	10	6
Amount
Amount of contracts charged off	$ 0	$ (99)	$ (259)	$ (142)
Amount of contracts paid off	$ (123)	$ (253)	$ (2,256)	$ (588)

Loans receivable - Troubled Deb

Loans receivable - Troubled Debt Restructuring (Including Re-Modified TDRs) by Portfolio Segment and by Class of Financing Receivable (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts | contract	8	6	16	28
Troubled debt restructurings, recorded investment at the time of modification	$ 811	$ 1,044	$ 5,395	$ 7,118
Troubled debt restructurings, current recorded investment	807	1,041	5,029	6,121
Troubled debt restructurings, current allowance	$ 154	$ 77	$ 527	$ 1,092
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, number of contracts | contract	2	1	2	1
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, recorded investment at the time of modification	$ 240	$ 6,256	$ 240	$ 6,256
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current recorded investment	240	6,113	240	6,113
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current allowance	$ 81	$ 893	$ 81	$ 893
Personal Banking
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts | contract	4	2	7	12
Troubled debt restructurings, recorded investment at the time of modification	$ 525	$ 12	$ 1,419	$ 1,325
Troubled debt restructurings, current recorded investment	521	11	1,395	1,312
Troubled debt restructurings, current allowance	$ 70	$ 2	$ 158	$ 165
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, number of contracts | contract	0	0	0	0
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, recorded investment at the time of modification	$ 0	$ 0	$ 0	$ 0
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current recorded investment	0	0	0	0
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current allowance	$ 0	$ 0	$ 0	$ 0
Personal Banking | Residential mortgage loans
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts | contract	2	1	5	6
Troubled debt restructurings, recorded investment at the time of modification	$ 403	$ 9	$ 1,297	$ 1,041
Troubled debt restructurings, current recorded investment	402	8	1,276	1,031
Troubled debt restructurings, current allowance	$ 40	$ 1	$ 128	$ 105
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, number of contracts | contract	0	0	0	0
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, recorded investment at the time of modification	$ 0	$ 0	$ 0	$ 0
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current recorded investment	0	0	0	0
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current allowance	$ 0	$ 0	$ 0	$ 0
Personal Banking | Home equity loans
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts | contract	2	1	2	6
Troubled debt restructurings, recorded investment at the time of modification	$ 122	$ 3	$ 122	$ 284
Troubled debt restructurings, current recorded investment	119	3	119	281
Troubled debt restructurings, current allowance	$ 30	$ 1	$ 30	$ 60
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, number of contracts | contract	0	0	0	0
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, recorded investment at the time of modification	$ 0	$ 0	$ 0	$ 0
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current recorded investment	0	0	0	0
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current allowance	$ 0	$ 0	$ 0	$ 0
Commercial Banking
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts | contract	4	4	9	16
Troubled debt restructurings, recorded investment at the time of modification	$ 286	$ 1,032	$ 3,976	$ 5,793
Troubled debt restructurings, current recorded investment	286	1,030	3,634	4,809
Troubled debt restructurings, current allowance	$ 84	$ 75	$ 369	$ 927
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, number of contracts | contract	2	1	2	1
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, recorded investment at the time of modification	$ 240	$ 6,256	$ 240	$ 6,256
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current recorded investment	240	6,113	240	6,113
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current allowance	$ 81	$ 893	$ 81	$ 893
Commercial Banking | Commercial real estate loans
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts | contract	2	1	6	5
Troubled debt restructurings, recorded investment at the time of modification	$ 114	$ 154	$ 3,600	$ 2,250
Troubled debt restructurings, current recorded investment	116	153	3,282	2,218
Troubled debt restructurings, current allowance	$ 13	$ 11	$ 285	$ 295
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, number of contracts | contract	1	1	1	1
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, recorded investment at the time of modification	$ 90	$ 6,256	$ 90	$ 6,256
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current recorded investment	90	6,113	90	6,113
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current allowance	$ 11	$ 893	$ 11	$ 893
Commercial Banking | Commercial loans
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, number of contracts | contract	2	3	3	11
Troubled debt restructurings, recorded investment at the time of modification	$ 172	$ 878	$ 376	$ 3,543
Troubled debt restructurings, current recorded investment	170	877	352	2,591
Troubled debt restructurings, current allowance	$ 71	$ 64	$ 84	$ 632
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, number of contracts | contract	1	0	1	0
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, recorded investment at the time of modification	$ 150	$ 0	$ 150	$ 0
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current recorded investment	150	0	150	0
Troubled debt restructuring modified within the previous twelve months that have subsequently defaulted, current allowance	$ 70	$ 0	$ 70	$ 0

Loans receivable - Troubled D49

Loans receivable - Troubled Debt Restructurings by Type of Modification (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract	Sep. 30, 2017USD ($)contract	Sep. 30, 2016USD ($)contract
Troubled debt restructurings
Number of contracts | contract	8	6	16	28
Troubled debt restructurings	$ 807	$ 1,041	$ 5,029	$ 6,121
Number of re-modified TDRs | contract	2	1	3	5
Re-modified troubled debt restructurings	$ 263	$ 799	$ 693	$ 1,844
Rate
Troubled debt restructurings
Troubled debt restructurings	369	0	479	482
Re-modified troubled debt restructurings	263	0	263	0
Payment
Troubled debt restructurings
Troubled debt restructurings	0	799	2,710	1,228
Re-modified troubled debt restructurings	0	799	0	1,662
Maturity date
Troubled debt restructurings
Troubled debt restructurings	286	242	924	2,202
Re-modified troubled debt restructurings	0	0	0	0
Other
Troubled debt restructurings
Troubled debt restructurings	152	0	916	2,209
Re-modified troubled debt restructurings	$ 0	$ 0	$ 430	$ 182
Personal Banking
Troubled debt restructurings
Number of contracts | contract	4	2	7	12
Troubled debt restructurings	$ 521	$ 11	$ 1,395	$ 1,312
Number of re-modified TDRs | contract	2	0	3	0
Re-modified troubled debt restructurings	$ 263	$ 0	$ 693	$ 0
Personal Banking | Rate
Troubled debt restructurings
Troubled debt restructurings	369	0	479	482
Re-modified troubled debt restructurings	263	0	263	0
Personal Banking | Payment
Troubled debt restructurings
Troubled debt restructurings	0	0	0	0
Re-modified troubled debt restructurings	0	0	0	0
Personal Banking | Maturity date
Troubled debt restructurings
Troubled debt restructurings	0	11	0	625
Re-modified troubled debt restructurings	0	0	0	0
Personal Banking | Other
Troubled debt restructurings
Troubled debt restructurings	152	0	916	205
Re-modified troubled debt restructurings	$ 0	$ 0	$ 430	$ 0
Personal Banking | Residential mortgage loans
Troubled debt restructurings
Number of contracts | contract	2	1	5	6
Troubled debt restructurings	$ 402	$ 8	$ 1,276	$ 1,031
Number of re-modified TDRs | contract	1	0	2	0
Re-modified troubled debt restructurings	$ 250	$ 0	$ 680	$ 0
Personal Banking | Residential mortgage loans | Rate
Troubled debt restructurings
Troubled debt restructurings	250	0	360	361
Re-modified troubled debt restructurings	250	0	250	0
Personal Banking | Residential mortgage loans | Payment
Troubled debt restructurings
Troubled debt restructurings	0	0	0	0
Re-modified troubled debt restructurings	0	0	0	0
Personal Banking | Residential mortgage loans | Maturity date
Troubled debt restructurings
Troubled debt restructurings	0	8	0	622
Re-modified troubled debt restructurings	0	0	0	0
Personal Banking | Residential mortgage loans | Other
Troubled debt restructurings
Troubled debt restructurings	152	0	916	48
Re-modified troubled debt restructurings	$ 0	$ 0	$ 430	$ 0
Personal Banking | Home equity loans
Troubled debt restructurings
Number of contracts | contract	2	1	2	6
Troubled debt restructurings	$ 119	$ 3	$ 119	$ 281
Number of re-modified TDRs | contract	1	0	1	0
Re-modified troubled debt restructurings	$ 13	$ 0	$ 13	$ 0
Personal Banking | Home equity loans | Rate
Troubled debt restructurings
Troubled debt restructurings	119	0	119	121
Re-modified troubled debt restructurings	13	0	13	0
Personal Banking | Home equity loans | Payment
Troubled debt restructurings
Troubled debt restructurings	0	0	0	0
Re-modified troubled debt restructurings	0	0	0	0
Personal Banking | Home equity loans | Maturity date
Troubled debt restructurings
Troubled debt restructurings	0	3	0	3
Re-modified troubled debt restructurings	0	0	0	0
Personal Banking | Home equity loans | Other
Troubled debt restructurings
Troubled debt restructurings	0	0	0	157
Re-modified troubled debt restructurings	$ 0	$ 0	$ 0	$ 0
Commercial Banking
Troubled debt restructurings
Number of contracts | contract	4	4	9	16
Troubled debt restructurings	$ 286	$ 1,030	$ 3,634	$ 4,809
Number of re-modified TDRs | contract	0	1	0	5
Re-modified troubled debt restructurings	$ 0	$ 799	$ 0	$ 1,844
Commercial Banking | Rate
Troubled debt restructurings
Troubled debt restructurings	0	0	0	0
Re-modified troubled debt restructurings	0	0	0	0
Commercial Banking | Payment
Troubled debt restructurings
Troubled debt restructurings	0	799	2,710	1,228
Re-modified troubled debt restructurings	0	799	0	1,662
Commercial Banking | Maturity date
Troubled debt restructurings
Troubled debt restructurings	286	231	924	1,577
Re-modified troubled debt restructurings	0	0	0	0
Commercial Banking | Other
Troubled debt restructurings
Troubled debt restructurings	0	0	0	2,004
Re-modified troubled debt restructurings	$ 0	$ 0	$ 0	$ 182
Commercial Banking | Commercial real estate loans
Troubled debt restructurings
Number of contracts | contract	2	1	6	5
Troubled debt restructurings	$ 116	$ 153	$ 3,282	$ 2,218
Number of re-modified TDRs | contract	0	0	0	1
Re-modified troubled debt restructurings	$ 0	$ 0	$ 0	$ 182
Commercial Banking | Commercial real estate loans | Rate
Troubled debt restructurings
Troubled debt restructurings	0	0	0	0
Re-modified troubled debt restructurings	0	0	0	0
Commercial Banking | Commercial real estate loans | Payment
Troubled debt restructurings
Troubled debt restructurings	0	0	2,710	429
Re-modified troubled debt restructurings	0	0	0	0
Commercial Banking | Commercial real estate loans | Maturity date
Troubled debt restructurings
Troubled debt restructurings	116	153	572	535
Re-modified troubled debt restructurings	0	0	0	0
Commercial Banking | Commercial real estate loans | Other
Troubled debt restructurings
Troubled debt restructurings	0	0	0	1,254
Re-modified troubled debt restructurings	$ 0	$ 0	$ 0	$ 182
Commercial Banking | Commercial loans
Troubled debt restructurings
Number of contracts | contract	2	3	3	11
Troubled debt restructurings	$ 170	$ 877	$ 352	$ 2,591
Number of re-modified TDRs | contract	0	1	0	4
Re-modified troubled debt restructurings	$ 0	$ 799	$ 0	$ 1,662
Commercial Banking | Commercial loans | Rate
Troubled debt restructurings
Troubled debt restructurings	0	0	0	0
Re-modified troubled debt restructurings	0	0	0	0
Commercial Banking | Commercial loans | Payment
Troubled debt restructurings
Troubled debt restructurings	0	799	0	799
Re-modified troubled debt restructurings	0	799	0	1,662
Commercial Banking | Commercial loans | Maturity date
Troubled debt restructurings
Troubled debt restructurings	170	78	352	1,042
Re-modified troubled debt restructurings	0	0	0	0
Commercial Banking | Commercial loans | Other
Troubled debt restructurings
Troubled debt restructurings	0	0	0	750
Re-modified troubled debt restructurings	$ 0	$ 0	$ 0	$ 0

Loans receivable - Loan Delinqu

Loans receivable - Loan Delinquencies (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Loan payment delinquencies
Total delinquency	$ 101,756	$ 121,594
Current	7,624,382	7,435,753
Total loans	7,726,138	7,557,347
90 days or greater delinquent and accruing	1,244	2,824
30-59 Days delinquent
Loan payment delinquencies
Total delinquency	29,175	55,614
60-89 Days delinquent
Loan payment delinquencies
Total delinquency	22,921	17,975
90 Days or greater delinquent
Loan payment delinquencies
Total delinquency	49,660	48,005
Personal Banking
Loan payment delinquencies
Total loans	4,730,581	4,686,497
Personal Banking | Residential mortgage loans
Loan payment delinquencies
Total loans	2,743,226	2,698,166
Personal Banking | Home equity loans
Loan payment delinquencies
Total loans	1,313,435	1,345,370
Personal Banking | Consumer finance loans
Loan payment delinquencies
Total loans	26,892	48,981
Personal Banking | Consumer loans
Loan payment delinquencies
Total loans	647,028	593,980
Commercial Banking
Loan payment delinquencies
Total loans	2,995,557	2,870,850
Commercial Banking | Commercial real estate loans
Loan payment delinquencies
Total loans	2,398,886	2,342,089
Commercial Banking | Commercial loans
Loan payment delinquencies
Total loans	596,671	528,761
Originated
Loan payment delinquencies
Total delinquency	86,475	105,990
Current	6,761,564	6,406,081
Total loans	6,848,039	6,512,071
90 days or greater delinquent and accruing	0	0
Originated | 30-59 Days delinquent
Loan payment delinquencies
Total delinquency	24,577	49,336
Originated | 60-89 Days delinquent
Loan payment delinquencies
Total delinquency	20,797	15,946
Originated | 90 Days or greater delinquent
Loan payment delinquencies
Total delinquency	41,101	40,708
Originated | Personal Banking
Loan payment delinquencies
Total delinquency	53,969	72,003
Current	4,176,456	4,012,610
Total loans	4,230,425	4,084,613
90 days or greater delinquent and accruing	0	0
Originated | Personal Banking | Residential mortgage loans
Loan payment delinquencies
Total delinquency	20,219	44,810
Current	2,603,544	2,536,443
Total loans	2,623,763	2,564,655
90 days or greater delinquent and accruing	0	0
Originated | Personal Banking | Home equity loans
Loan payment delinquencies
Total delinquency	14,013	11,873
Current	1,031,139	1,014,442
Total loans	1,045,152	1,042,913
90 days or greater delinquent and accruing	0	0
Originated | Personal Banking | Consumer finance loans
Loan payment delinquencies
Total delinquency	5,587	2,764
Current	21,305	46,217
Total loans	26,892	48,981
90 days or greater delinquent and accruing	0	0
Originated | Personal Banking | Consumer loans
Loan payment delinquencies
Total delinquency	14,150	12,556
Current	520,468	415,508
Total loans	534,618	428,064
90 days or greater delinquent and accruing	0	0
Originated | Personal Banking | 30-59 Days delinquent
Loan payment delinquencies
Total delinquency	20,720	40,595
Originated | Personal Banking | 30-59 Days delinquent | Residential mortgage loans
Loan payment delinquencies
Total delinquency	2,771	26,212
Originated | Personal Banking | 30-59 Days delinquent | Home equity loans
Loan payment delinquencies
Total delinquency	6,636	5,785
Originated | Personal Banking | 30-59 Days delinquent | Consumer finance loans
Loan payment delinquencies
Total delinquency	3,065	1,255
Originated | Personal Banking | 30-59 Days delinquent | Consumer loans
Loan payment delinquencies
Total delinquency	8,248	7,343
Originated | Personal Banking | 60-89 Days delinquent
Loan payment delinquencies
Total delinquency	13,505	10,315
Originated | Personal Banking | 60-89 Days delinquent | Residential mortgage loans
Loan payment delinquencies
Total delinquency	6,133	5,806
Originated | Personal Banking | 60-89 Days delinquent | Home equity loans
Loan payment delinquencies
Total delinquency	2,219	1,305
Originated | Personal Banking | 60-89 Days delinquent | Consumer finance loans
Loan payment delinquencies
Total delinquency	2,190	766
Originated | Personal Banking | 60-89 Days delinquent | Consumer loans
Loan payment delinquencies
Total delinquency	2,963	2,438
Originated | Personal Banking | 90 Days or greater delinquent
Loan payment delinquencies
Total delinquency	19,744	21,093
Originated | Personal Banking | 90 Days or greater delinquent | Residential mortgage loans
Loan payment delinquencies
Total delinquency	11,315	12,792
Originated | Personal Banking | 90 Days or greater delinquent | Home equity loans
Loan payment delinquencies
Total delinquency	5,158	4,783
Originated | Personal Banking | 90 Days or greater delinquent | Consumer finance loans
Loan payment delinquencies
Total delinquency	332	743
Originated | Personal Banking | 90 Days or greater delinquent | Consumer loans
Loan payment delinquencies
Total delinquency	2,939	2,775
Originated | Commercial Banking
Loan payment delinquencies
Total delinquency	32,506	33,987
Current	2,585,108	2,393,471
Total loans	2,617,614	2,427,458
90 days or greater delinquent and accruing	0	0
Originated | Commercial Banking | Commercial real estate loans
Loan payment delinquencies
Total delinquency	28,945	27,856
Current	2,060,438	1,944,227
Total loans	2,089,383	1,972,083
90 days or greater delinquent and accruing	0	0
Originated | Commercial Banking | Commercial loans
Loan payment delinquencies
Total delinquency	3,561	6,131
Current	524,670	449,244
Total loans	528,231	455,375
90 days or greater delinquent and accruing	0	0
Originated | Commercial Banking | 30-59 Days delinquent
Loan payment delinquencies
Total delinquency	3,857	8,741
Originated | Commercial Banking | 30-59 Days delinquent | Commercial real estate loans
Loan payment delinquencies
Total delinquency	3,586	7,674
Originated | Commercial Banking | 30-59 Days delinquent | Commercial loans
Loan payment delinquencies
Total delinquency	271	1,067
Originated | Commercial Banking | 60-89 Days delinquent
Loan payment delinquencies
Total delinquency	7,292	5,631
Originated | Commercial Banking | 60-89 Days delinquent | Commercial real estate loans
Loan payment delinquencies
Total delinquency	7,290	3,674
Originated | Commercial Banking | 60-89 Days delinquent | Commercial loans
Loan payment delinquencies
Total delinquency	2	1,957
Originated | Commercial Banking | 90 Days or greater delinquent
Loan payment delinquencies
Total delinquency	21,357	19,615
Originated | Commercial Banking | 90 Days or greater delinquent | Commercial real estate loans
Loan payment delinquencies
Total delinquency	18,069	16,508
Originated | Commercial Banking | 90 Days or greater delinquent | Commercial loans
Loan payment delinquencies
Total delinquency	3,288	3,107
Acquired
Loan payment delinquencies
Total delinquency	15,281	15,604
Current	862,818	1,029,672
Total loans	878,099	1,045,276
90 days or greater delinquent and accruing	1,244	2,824
Acquired | 30-59 Days delinquent
Loan payment delinquencies
Total delinquency	4,598	6,278
Acquired | 60-89 Days delinquent
Loan payment delinquencies
Total delinquency	2,124	2,029
Acquired | 90 Days or greater delinquent
Loan payment delinquencies
Total delinquency	8,559	7,297
Acquired | Personal Banking
Loan payment delinquencies
Total delinquency	5,939	6,670
Current	494,217	595,214
Total loans	500,156	601,884
90 days or greater delinquent and accruing	517	671
Acquired | Personal Banking | Residential mortgage loans
Loan payment delinquencies
Total delinquency	1,938	2,424
Current	117,525	131,087
Total loans	119,463	133,511
90 days or greater delinquent and accruing	405	452
Acquired | Personal Banking | Home equity loans
Loan payment delinquencies
Total delinquency	2,104	2,251
Current	266,179	300,206
Total loans	268,283	302,457
90 days or greater delinquent and accruing	102	204
Acquired | Personal Banking | Consumer loans
Loan payment delinquencies
Total delinquency	1,897	1,995
Current	110,513	163,921
Total loans	112,410	165,916
90 days or greater delinquent and accruing	10	15
Acquired | Personal Banking | 30-59 Days delinquent
Loan payment delinquencies
Total delinquency	1,956	3,464
Acquired | Personal Banking | 30-59 Days delinquent | Residential mortgage loans
Loan payment delinquencies
Total delinquency	0	1,174
Acquired | Personal Banking | 30-59 Days delinquent | Home equity loans
Loan payment delinquencies
Total delinquency	694	1,020
Acquired | Personal Banking | 30-59 Days delinquent | Consumer loans
Loan payment delinquencies
Total delinquency	1,262	1,270
Acquired | Personal Banking | 60-89 Days delinquent
Loan payment delinquencies
Total delinquency	1,554	1,084
Acquired | Personal Banking | 60-89 Days delinquent | Residential mortgage loans
Loan payment delinquencies
Total delinquency	1,063	421
Acquired | Personal Banking | 60-89 Days delinquent | Home equity loans
Loan payment delinquencies
Total delinquency	171	258
Acquired | Personal Banking | 60-89 Days delinquent | Consumer loans
Loan payment delinquencies
Total delinquency	320	405
Acquired | Personal Banking | 90 Days or greater delinquent
Loan payment delinquencies
Total delinquency	2,429	2,122
Acquired | Personal Banking | 90 Days or greater delinquent | Residential mortgage loans
Loan payment delinquencies
Total delinquency	875	829
Acquired | Personal Banking | 90 Days or greater delinquent | Home equity loans
Loan payment delinquencies
Total delinquency	1,239	973
Acquired | Personal Banking | 90 Days or greater delinquent | Consumer loans
Loan payment delinquencies
Total delinquency	315	320
Acquired | Commercial Banking
Loan payment delinquencies
Total delinquency	9,342	8,934
Current	368,601	434,458
Total loans	377,943	443,392
90 days or greater delinquent and accruing	727	2,153
Acquired | Commercial Banking | Commercial real estate loans
Loan payment delinquencies
Total delinquency	7,784	8,286
Current	301,719	361,720
Total loans	309,503	370,006
90 days or greater delinquent and accruing	727	2,006
Acquired | Commercial Banking | Commercial loans
Loan payment delinquencies
Total delinquency	1,558	648
Current	66,882	72,738
Total loans	68,440	73,386
90 days or greater delinquent and accruing	0	147
Acquired | Commercial Banking | 30-59 Days delinquent
Loan payment delinquencies
Total delinquency	2,642	2,814
Acquired | Commercial Banking | 30-59 Days delinquent | Commercial real estate loans
Loan payment delinquencies
Total delinquency	2,167	2,703
Acquired | Commercial Banking | 30-59 Days delinquent | Commercial loans
Loan payment delinquencies
Total delinquency	475	111
Acquired | Commercial Banking | 60-89 Days delinquent
Loan payment delinquencies
Total delinquency	570	945
Acquired | Commercial Banking | 60-89 Days delinquent | Commercial real estate loans
Loan payment delinquencies
Total delinquency	376	821
Acquired | Commercial Banking | 60-89 Days delinquent | Commercial loans
Loan payment delinquencies
Total delinquency	194	124
Acquired | Commercial Banking | 90 Days or greater delinquent
Loan payment delinquencies
Total delinquency	6,130	5,175
Acquired | Commercial Banking | 90 Days or greater delinquent | Commercial real estate loans
Loan payment delinquencies
Total delinquency	5,241	4,762
Acquired | Commercial Banking | 90 Days or greater delinquent | Commercial loans
Loan payment delinquencies
Total delinquency	$ 889	$ 413

Loans receivable - Credit Quali

Loans receivable - Credit Quality Indicators (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Credit quality indicators
Total loans	$ 7,726,138,000	$ 7,557,347,000
Pass
Credit quality indicators
Total loans	7,419,962,000	7,278,068,000
Special mention
Credit quality indicators
Total loans	75,042,000	60,916,000
Substandard
Credit quality indicators
Total loans	231,134,000	218,363,000
Doubtful
Credit quality indicators
Total loans	0	0
Loss
Credit quality indicators
Total loans	0	0
Special mention or substandard | Minimum
Credit quality indicators
Total loans	1,000,000
Personal Banking
Credit quality indicators
Total loans	4,730,581,000	4,686,497,000
Personal Banking | Residential mortgage loans
Credit quality indicators
Total loans	2,743,226,000	2,698,166,000
Personal Banking | Home equity loans
Credit quality indicators
Total loans	1,313,435,000	1,345,370,000
Personal Banking | Consumer finance loans
Credit quality indicators
Total loans	26,892,000	48,981,000
Personal Banking | Consumer loans
Credit quality indicators
Total loans	647,028,000	593,980,000
Commercial Banking
Credit quality indicators
Total loans	2,995,557,000	2,870,850,000
Commercial Banking | Commercial real estate loans
Credit quality indicators
Total loans	2,398,886,000	2,342,089,000
Commercial Banking | Commercial loans
Credit quality indicators
Total loans	596,671,000	528,761,000
Originated
Credit quality indicators
Total loans	6,848,039,000	6,512,071,000
Originated | Pass
Credit quality indicators
Total loans	6,598,966,000	6,281,250,000
Originated | Special mention
Credit quality indicators
Total loans	66,166,000	51,524,000
Originated | Substandard
Credit quality indicators
Total loans	182,907,000	179,297,000
Originated | Doubtful
Credit quality indicators
Total loans	0	0
Originated | Loss
Credit quality indicators
Total loans	0	0
Originated | Personal Banking
Credit quality indicators
Total loans	4,230,425,000	4,084,613,000
Originated | Personal Banking | Pass
Credit quality indicators
Total loans	4,203,362,000	4,057,836,000
Originated | Personal Banking | Special mention
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Substandard
Credit quality indicators
Total loans	27,063,000	26,777,000
Originated | Personal Banking | Doubtful
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Loss
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Residential mortgage loans
Credit quality indicators
Total loans	2,623,763,000	2,564,655,000
Originated | Personal Banking | Residential mortgage loans | Pass
Credit quality indicators
Total loans	2,607,925,000	2,548,390,000
Originated | Personal Banking | Residential mortgage loans | Special mention
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Residential mortgage loans | Substandard
Credit quality indicators
Total loans	15,838,000	16,265,000
Originated | Personal Banking | Residential mortgage loans | Doubtful
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Residential mortgage loans | Loss
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Home equity loans
Credit quality indicators
Total loans	1,045,152,000	1,042,913,000
Originated | Personal Banking | Home equity loans | Pass
Credit quality indicators
Total loans	1,037,567,000	1,035,496,000
Originated | Personal Banking | Home equity loans | Special mention
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Home equity loans | Substandard
Credit quality indicators
Total loans	7,585,000	7,417,000
Originated | Personal Banking | Home equity loans | Doubtful
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Home equity loans | Loss
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Consumer finance loans
Credit quality indicators
Total loans	26,892,000	48,981,000
Originated | Personal Banking | Consumer finance loans | Pass
Credit quality indicators
Total loans	26,560,000	48,238,000
Originated | Personal Banking | Consumer finance loans | Special mention
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Consumer finance loans | Substandard
Credit quality indicators
Total loans	332,000	743,000
Originated | Personal Banking | Consumer finance loans | Doubtful
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Consumer finance loans | Loss
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Consumer loans
Credit quality indicators
Total loans	534,618,000	428,064,000
Originated | Personal Banking | Consumer loans | Pass
Credit quality indicators
Total loans	531,310,000	425,712,000
Originated | Personal Banking | Consumer loans | Special mention
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Consumer loans | Substandard
Credit quality indicators
Total loans	3,308,000	2,352,000
Originated | Personal Banking | Consumer loans | Doubtful
Credit quality indicators
Total loans	0	0
Originated | Personal Banking | Consumer loans | Loss
Credit quality indicators
Total loans	0	0
Originated | Commercial Banking
Credit quality indicators
Total loans	2,617,614,000	2,427,458,000
Originated | Commercial Banking | Pass
Credit quality indicators
Total loans	2,395,604,000	2,223,414,000
Originated | Commercial Banking | Special mention
Credit quality indicators
Total loans	66,166,000	51,524,000
Originated | Commercial Banking | Substandard
Credit quality indicators
Total loans	155,844,000	152,520,000
Originated | Commercial Banking | Doubtful
Credit quality indicators
Total loans	0	0
Originated | Commercial Banking | Loss
Credit quality indicators
Total loans	0	0
Originated | Commercial Banking | Commercial real estate loans
Credit quality indicators
Total loans	2,089,383,000	1,972,083,000
Originated | Commercial Banking | Commercial real estate loans | Pass
Credit quality indicators
Total loans	1,927,940,000	1,821,548,000
Originated | Commercial Banking | Commercial real estate loans | Special mention
Credit quality indicators
Total loans	50,962,000	36,321,000
Originated | Commercial Banking | Commercial real estate loans | Substandard
Credit quality indicators
Total loans	110,481,000	114,214,000
Originated | Commercial Banking | Commercial real estate loans | Doubtful
Credit quality indicators
Total loans	0	0
Originated | Commercial Banking | Commercial real estate loans | Loss
Credit quality indicators
Total loans	0	0
Originated | Commercial Banking | Commercial loans
Credit quality indicators
Total loans	528,231,000	455,375,000
Originated | Commercial Banking | Commercial loans | Pass
Credit quality indicators
Total loans	467,664,000	401,866,000
Originated | Commercial Banking | Commercial loans | Special mention
Credit quality indicators
Total loans	15,204,000	15,203,000
Originated | Commercial Banking | Commercial loans | Substandard
Credit quality indicators
Total loans	45,363,000	38,306,000
Originated | Commercial Banking | Commercial loans | Doubtful
Credit quality indicators
Total loans	0	0
Originated | Commercial Banking | Commercial loans | Loss
Credit quality indicators
Total loans	0	0
Acquired
Credit quality indicators
Total loans	878,099,000	1,045,276,000
Acquired | Pass
Credit quality indicators
Total loans	820,996,000	996,818,000
Acquired | Special mention
Credit quality indicators
Total loans	8,876,000	9,392,000
Acquired | Substandard
Credit quality indicators
Total loans	48,227,000	39,066,000
Acquired | Doubtful
Credit quality indicators
Total loans	0	0
Acquired | Loss
Credit quality indicators
Total loans	0	0
Acquired | Personal Banking
Credit quality indicators
Total loans	500,156,000	601,884,000
Acquired | Personal Banking | Pass
Credit quality indicators
Total loans	493,266,000	596,911,000
Acquired | Personal Banking | Special mention
Credit quality indicators
Total loans	0	0
Acquired | Personal Banking | Substandard
Credit quality indicators
Total loans	6,890,000	4,973,000
Acquired | Personal Banking | Doubtful
Credit quality indicators
Total loans	0	0
Acquired | Personal Banking | Loss
Credit quality indicators
Total loans	0	0
Acquired | Personal Banking | Residential mortgage loans
Credit quality indicators
Total loans	119,463,000	133,511,000
Acquired | Personal Banking | Residential mortgage loans | Pass
Credit quality indicators
Total loans	117,135,000	131,717,000
Acquired | Personal Banking | Residential mortgage loans | Special mention
Credit quality indicators
Total loans	0	0
Acquired | Personal Banking | Residential mortgage loans | Substandard
Credit quality indicators
Total loans	2,328,000	1,794,000
Acquired | Personal Banking | Residential mortgage loans | Doubtful
Credit quality indicators
Total loans	0	0
Acquired | Personal Banking | Residential mortgage loans | Loss
Credit quality indicators
Total loans	0	0
Acquired | Personal Banking | Home equity loans
Credit quality indicators
Total loans	268,283,000	302,457,000
Acquired | Personal Banking | Home equity loans | Pass
Credit quality indicators
Total loans	264,469,000	300,100,000
Acquired | Personal Banking | Home equity loans | Special mention
Credit quality indicators
Total loans	0	0
Acquired | Personal Banking | Home equity loans | Substandard
Credit quality indicators
Total loans	3,814,000	2,357,000
Acquired | Personal Banking | Home equity loans | Doubtful
Credit quality indicators
Total loans	0	0
Acquired | Personal Banking | Home equity loans | Loss
Credit quality indicators
Total loans	0	0
Acquired | Personal Banking | Consumer loans
Credit quality indicators
Total loans	112,410,000	165,916,000
Acquired | Personal Banking | Consumer loans | Pass
Credit quality indicators
Total loans	111,662,000	165,094,000
Acquired | Personal Banking | Consumer loans | Special mention
Credit quality indicators
Total loans	0	0
Acquired | Personal Banking | Consumer loans | Substandard
Credit quality indicators
Total loans	748,000	822,000
Acquired | Personal Banking | Consumer loans | Doubtful
Credit quality indicators
Total loans	0	0
Acquired | Personal Banking | Consumer loans | Loss
Credit quality indicators
Total loans	0	0
Acquired | Commercial Banking
Credit quality indicators
Total loans	377,943,000	443,392,000
Acquired | Commercial Banking | Pass
Credit quality indicators
Total loans	327,730,000	399,907,000
Acquired | Commercial Banking | Special mention
Credit quality indicators
Total loans	8,876,000	9,392,000
Acquired | Commercial Banking | Substandard
Credit quality indicators
Total loans	41,337,000	34,093,000
Acquired | Commercial Banking | Doubtful
Credit quality indicators
Total loans	0	0
Acquired | Commercial Banking | Loss
Credit quality indicators
Total loans	0	0
Acquired | Commercial Banking | Commercial real estate loans
Credit quality indicators
Total loans	309,503,000	370,006,000
Acquired | Commercial Banking | Commercial real estate loans | Pass
Credit quality indicators
Total loans	268,570,000	331,780,000
Acquired | Commercial Banking | Commercial real estate loans | Special mention
Credit quality indicators
Total loans	5,156,000	7,403,000
Acquired | Commercial Banking | Commercial real estate loans | Substandard
Credit quality indicators
Total loans	35,777,000	30,823,000
Acquired | Commercial Banking | Commercial real estate loans | Doubtful
Credit quality indicators
Total loans	0	0
Acquired | Commercial Banking | Commercial real estate loans | Loss
Credit quality indicators
Total loans	0	0
Acquired | Commercial Banking | Commercial loans
Credit quality indicators
Total loans	68,440,000	73,386,000
Acquired | Commercial Banking | Commercial loans | Pass
Credit quality indicators
Total loans	59,160,000	68,127,000
Acquired | Commercial Banking | Commercial loans | Special mention
Credit quality indicators
Total loans	3,720,000	1,989,000
Acquired | Commercial Banking | Commercial loans | Substandard
Credit quality indicators
Total loans	5,560,000	3,270,000
Acquired | Commercial Banking | Commercial loans | Doubtful
Credit quality indicators
Total loans	0	0
Acquired | Commercial Banking | Commercial loans | Loss
Credit quality indicators
Total loans	$ 0	$ 0

Goodwill and Other Intangible52

Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Amortizable intangible assets:
Amortization expense	$ 1,691	$ 1,068	$ 5,189	$ 2,453
Estimated amortization expense
For the year ending December 31, 2017	6,764		6,764
For the year ending December 31, 2018	5,848		5,848
For the year ending December 31, 2019	4,933		4,933
For the year ending December 31, 2020	4,017		4,017
For the year ending December 31, 2021	3,188		3,188
For the year ending December 31, 2022	2,456		2,456
Core Deposits
Amortizable intangible assets:
Intangible asset - gross	63,685		63,685		$ 37,953
Acquisitions			0		25,732
Less: accumulated amortization	(38,725)		(38,725)		(34,378)
Intangible asset - net	24,960		24,960		29,307
Customer and Contract
Amortizable intangible assets:
Intangible asset - gross	10,474		10,474		8,496
Acquisitions			0		1,978
Less: accumulated amortization	(8,190)		(8,190)		(7,348)
Intangible asset - net	$ 2,284		$ 2,284		$ 3,126

Goodwill and Other Intangible53

Goodwill and Other Intangible Assets - Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Changes in the carrying amount of goodwill
Balance at the beginning of the period	$ 307,420	$ 261,736
Goodwill acquired	0	45,684
Impairment losses	0
Balance at the end of the period	$ 307,420	$ 307,420

Guarantees (Details)

Guarantees (Details) $ in Thousands	Sep. 30, 2017USD ($)
Guarantor Obligations [Line Items]
Liability recognized for the obligations	$ 137
Letter of Credit
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	17,700
Maximum potential amount of future payments fully collateralized	$ 17,200

Earnings Per Share - Narrative

Earnings Per Share - Narrative (Details) - Stock options - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Antidilutive securities excluded from the calculation of earnings per share
Average share price during the reporting period (in dollars per share)	$ 16.26	$ 15.19	$ 16.58	$ 14.02
Options excluded from the calculation of earnings per share (in shares)				710,423
Weighted average share price during the reporting period (in dollars per share)				$ 14.15

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Reported net income	$ 23,591	$ 14,197	$ 72,319	$ 25,173
Weighted average common shares outstanding (in shares)	101,163,534	99,602,535	100,921,322	99,224,565
Dilutive potential shares due to effect of stock options (in shares)	1,400,942	1,465,710	1,617,020	1,008,942
Total weighted average common shares and dilutive potential shares (in shares)	102,564,476	101,068,245	102,538,342	100,233,507
Basic earnings per share (in dollars per share)	$ 0.23	$ 0.14	$ 0.72	$ 0.25
Diluted earnings per share (in dollars per share)	$ 0.23	$ 0.14	$ 0.71	$ 0.25

Pension and Other Post-retire57

Pension and Other Post-retirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Pension benefits
Components of net periodic benefit cost
Service cost	$ 1,537	$ 1,374	$ 4,612	$ 4,122
Interest cost	1,719	1,695	5,159	5,087
Expected return on plan assets	(2,628)	(2,474)	(7,884)	(7,423)
Amortization of prior service cost	(580)	(581)	(1,742)	(1,742)
Amortization of the net loss	928	927	2,783	2,782
Net periodic cost	976	941	2,928	2,826
Pension benefits | Minimum
Components of net periodic benefit cost
Estimated contribution for the current year	4,000		4,000
Pension benefits | Maximum
Components of net periodic benefit cost
Estimated contribution for the current year	5,000		5,000
Other post-retirement benefits
Components of net periodic benefit cost
Service cost	0	0	0	0
Interest cost	17	18	51	53
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Amortization of the net loss	27	22	81	67
Net periodic cost	$ 44	$ 40	$ 132	$ 120

Disclosures About Fair Value 58

Disclosures About Fair Value of Financial Instruments - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Significant unrealized appreciation or depreciation in financial instruments	$ 0	$ 0
Financial assets:
Securities available-for-sale	869,481	826,200
Securities held-to-maturity	32,282	20,426
Assets held-for-sale	0	152,528
Accrued interest receivable	22,802	21,699
Financial liabilities:
Liabilities held-for-sale	0	215,657
Borrowed funds	115,388	142,899
Junior subordinated debentures	111,213	111,213
Level 1
Financial assets:
Cash and cash equivalents	165,676	389,867
Securities available-for-sale	949	4,440
Securities held-to-maturity	0	0
Loans receivable, net	1,382	9,625
Assets held-for-sale		146,660
Accrued interest receivable	22,802	21,699
FHLB Stock	0	0
Total financial assets	190,809	572,291
Financial liabilities:
Savings and checking deposits	6,506,184	6,341,735
Time deposits	0	0
Liabilities held-for-sale		215,649
Borrowed funds	115,388	142,899
Junior subordinated debentures	0	0
Cash flow hedges - swaps	0	0
Accrued interest payable	518	643
Total financial liabilities	6,622,090	6,700,926
Level 2
Financial assets:
Cash and cash equivalents	0	0
Securities available-for-sale	857,873	812,394
Securities held-to-maturity	32,282	20,426
Loans receivable, net	0	0
Assets held-for-sale		0
Accrued interest receivable	0	0
FHLB Stock	0	0
Total financial assets	890,155	832,820
Financial liabilities:
Savings and checking deposits	0	0
Time deposits	0	0
Liabilities held-for-sale		0
Borrowed funds	0	0
Junior subordinated debentures	0	0
Cash flow hedges - swaps	1,538	2,736
Accrued interest payable	0	0
Total financial liabilities	1,538	2,736
Level 3
Financial assets:
Cash and cash equivalents	0	0
Securities available-for-sale	10,659	9,366
Securities held-to-maturity	0	0
Loans receivable, net	7,745,524	7,869,190
Assets held-for-sale		0
Accrued interest receivable	0	0
FHLB Stock	0	0
Total financial assets	7,756,183	7,878,556
Financial liabilities:
Savings and checking deposits	0	0
Time deposits	1,455,485	1,626,434
Liabilities held-for-sale		0
Borrowed funds	0	0
Junior subordinated debentures	112,954	113,313
Cash flow hedges - swaps	0	0
Accrued interest payable	0	0
Total financial liabilities	1,568,439	1,739,747
Carrying amount
Financial assets:
Cash and cash equivalents	165,676	389,867
Securities available-for-sale	869,481	826,200
Securities held-to-maturity	31,961	19,978
Loans receivable, net	7,669,211	7,496,408
Assets held-for-sale		146,660
Accrued interest receivable	22,802	21,699
FHLB Stock	7,984	7,390
Total financial assets	8,767,115	8,908,202
Financial liabilities:
Savings and checking deposits	6,506,184	6,341,735
Time deposits	1,435,861	1,540,586
Liabilities held-for-sale		215,649
Borrowed funds	115,388	142,899
Junior subordinated debentures	111,213	111,213
Cash flow hedges - swaps	1,538	2,736
Accrued interest payable	518	643
Total financial liabilities	8,170,702	8,355,461
Estimated fair value
Financial assets:
Cash and cash equivalents	165,676	389,867
Securities available-for-sale	869,481	826,200
Securities held-to-maturity	32,282	20,426
Loans receivable, net	7,746,906	7,878,815
Assets held-for-sale		146,660
Accrued interest receivable	22,802	21,699
FHLB Stock	7,984	7,390
Total financial assets	8,845,131	9,291,057
Financial liabilities:
Savings and checking deposits	6,506,184	6,341,735
Time deposits	1,455,485	1,626,434
Liabilities held-for-sale		215,649
Borrowed funds	115,388	142,899
Junior subordinated debentures	112,954	113,313
Cash flow hedges - swaps	1,538	2,736
Accrued interest payable	518	643
Total financial liabilities	$ 8,192,067	$ 8,443,409

Disclosures About Fair Value 59

Disclosures About Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	$ 869,481	$ 826,200
Level 1
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	949	4,440
Interest rate swaps	0	0
Total financial assets	190,809	572,291
Level 2
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	857,873	812,394
Interest rate swaps	(1,538)	(2,736)
Total financial assets	890,155	832,820
Level 3
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	10,659	9,366
Interest rate swaps	0	0
Total financial assets	7,756,183	7,878,556
Measured on recurring basis
Assets and liabilities measured at fair value on a recurring basis
Total financial assets	867,943	823,464
Measured on recurring basis | Equity securities
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	949	4,440
Measured on recurring basis | Debt securities
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	313,493	374,226
Measured on recurring basis | Debt securities | U.S. government and agencies
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	2	6
Measured on recurring basis | Debt securities | Government sponsored enterprises
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	241,599	294,170
Measured on recurring basis | Debt securities | States and political subdivisions
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	53,214	63,070
Measured on recurring basis | Debt securities | Corporate
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	18,678	16,980
Measured on recurring basis | Total mortgage-backed securities
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	555,039	447,534
Measured on recurring basis | Residential mortgage-backed securities | GNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	28,388	30,883
Measured on recurring basis | Residential mortgage-backed securities | FNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	82,023	106,578
Measured on recurring basis | Residential mortgage-backed securities | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	68,234	82,115
Measured on recurring basis | Residential mortgage-backed securities | Non-agency
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	560	579
Measured on recurring basis | Collateralized mortgage obligations | GNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	5,152	6,287
Measured on recurring basis | Collateralized mortgage obligations | FNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	202,459	95,186
Measured on recurring basis | Collateralized mortgage obligations | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	168,182	119,197
Measured on recurring basis | Collateralized mortgage obligations | SBA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	6,608
Measured on recurring basis | Collateralized mortgage obligations | Non-agency
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	41	101
Measured on recurring basis | Interest rate swaps
Assets and liabilities measured at fair value on a recurring basis
Interest rate swaps	(1,538)	(2,736)
Measured on recurring basis | Level 1
Assets and liabilities measured at fair value on a recurring basis
Total financial assets	949	4,440
Measured on recurring basis | Level 1 | Equity securities
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	949	4,440
Measured on recurring basis | Level 1 | Debt securities
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Measured on recurring basis | Level 1 | Debt securities | U.S. government and agencies
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Measured on recurring basis | Level 1 | Debt securities | Government sponsored enterprises
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Measured on recurring basis | Level 1 | Debt securities | States and political subdivisions
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Measured on recurring basis | Level 1 | Debt securities | Corporate
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Measured on recurring basis | Level 1 | Total mortgage-backed securities
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 1 | Residential mortgage-backed securities | GNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 1 | Residential mortgage-backed securities | FNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 1 | Residential mortgage-backed securities | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 1 | Residential mortgage-backed securities | Non-agency
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 1 | Collateralized mortgage obligations | GNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 1 | Collateralized mortgage obligations | FNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 1 | Collateralized mortgage obligations | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 1 | Collateralized mortgage obligations | SBA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 1 | Collateralized mortgage obligations | Non-agency
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 1 | Interest rate swaps
Assets and liabilities measured at fair value on a recurring basis
Interest rate swaps	0	0
Measured on recurring basis | Level 2
Assets and liabilities measured at fair value on a recurring basis
Total financial assets	856,335	809,658
Measured on recurring basis | Level 2 | Equity securities
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Measured on recurring basis | Level 2 | Debt securities
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	302,834	364,860
Measured on recurring basis | Level 2 | Debt securities | U.S. government and agencies
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	2	6
Measured on recurring basis | Level 2 | Debt securities | Government sponsored enterprises
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	241,599	294,170
Measured on recurring basis | Level 2 | Debt securities | States and political subdivisions
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	53,214	63,070
Measured on recurring basis | Level 2 | Debt securities | Corporate
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	8,019	7,614
Measured on recurring basis | Level 2 | Total mortgage-backed securities
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	555,039	447,534
Measured on recurring basis | Level 2 | Residential mortgage-backed securities | GNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	28,388	30,883
Measured on recurring basis | Level 2 | Residential mortgage-backed securities | FNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	82,023	106,578
Measured on recurring basis | Level 2 | Residential mortgage-backed securities | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	68,234	82,115
Measured on recurring basis | Level 2 | Residential mortgage-backed securities | Non-agency
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	560	579
Measured on recurring basis | Level 2 | Collateralized mortgage obligations | GNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	5,152	6,287
Measured on recurring basis | Level 2 | Collateralized mortgage obligations | FNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	202,459	95,186
Measured on recurring basis | Level 2 | Collateralized mortgage obligations | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	168,182	119,197
Measured on recurring basis | Level 2 | Collateralized mortgage obligations | SBA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	6,608
Measured on recurring basis | Level 2 | Collateralized mortgage obligations | Non-agency
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	41	101
Measured on recurring basis | Level 2 | Interest rate swaps
Assets and liabilities measured at fair value on a recurring basis
Interest rate swaps	(1,538)	(2,736)
Measured on recurring basis | Level 3
Assets and liabilities measured at fair value on a recurring basis
Total financial assets	10,659	9,366
Measured on recurring basis | Level 3 | Equity securities
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Measured on recurring basis | Level 3 | Debt securities
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	10,659	9,366
Measured on recurring basis | Level 3 | Debt securities | U.S. government and agencies
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Measured on recurring basis | Level 3 | Debt securities | Government sponsored enterprises
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Measured on recurring basis | Level 3 | Debt securities | States and political subdivisions
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	0	0
Measured on recurring basis | Level 3 | Debt securities | Corporate
Assets and liabilities measured at fair value on a recurring basis
Securities available-for-sale	10,659	9,366
Measured on recurring basis | Level 3 | Total mortgage-backed securities
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 3 | Residential mortgage-backed securities | GNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 3 | Residential mortgage-backed securities | FNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 3 | Residential mortgage-backed securities | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 3 | Residential mortgage-backed securities | Non-agency
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 3 | Collateralized mortgage obligations | GNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 3 | Collateralized mortgage obligations | FNMA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 3 | Collateralized mortgage obligations | FHLMC
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 3 | Collateralized mortgage obligations | SBA
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 3 | Collateralized mortgage obligations | Non-agency
Assets and liabilities measured at fair value on a recurring basis
Residential mortgage-backed securities:	0	0
Measured on recurring basis | Level 3 | Interest rate swaps
Assets and liabilities measured at fair value on a recurring basis
Interest rate swaps	$ 0	$ 0

Disclosures About Fair Value 60

Disclosures About Fair Value of Financial Instruments - Reconciliation of all Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3) (Details) - Level 3 - Debt securities - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reconciliation of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Beginning balance	$ 10,638	$ 8,719	$ 9,366	$ 8,955
Net change in unrealized appreciation:
Included in net income as OTTI	0	0		0
Included in other comprehensive income	21	510	1,293	274
Purchases	0	0	0	0
Sales	0	0	0	0
Transfers in to Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Ending balance	$ 10,659	$ 9,229	$ 10,659	$ 9,229

Disclosures About Fair Value 61

Disclosures About Fair Value of Financial Instruments - Nonrecurring Assets that had Fair Market Values Below the Carrying Amount (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets	$ 44,369	$ 47,068
Loans measured for impairment
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets	38,907	41,933
Mortgage servicing rights
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets		246
Real estate owned
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets	5,462	4,889
Level 1
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets	0	0
Level 1 | Loans measured for impairment
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets	0	0
Level 1 | Mortgage servicing rights
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets		0
Level 1 | Real estate owned
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets	0	0
Level 2
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets	0	0
Level 2 | Loans measured for impairment
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets	0	0
Level 2 | Mortgage servicing rights
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets		0
Level 2 | Real estate owned
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets	0	0
Level 3
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets	44,369	47,068
Level 3 | Loans measured for impairment
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets	38,907	41,933
Level 3 | Mortgage servicing rights
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets		246
Level 3 | Real estate owned
Fair value measurement for nonrecurring assets that had a fair market value below the carrying amount
Total assets	$ 5,462	$ 4,889

Disclosures About Fair Value 62

Disclosures About Fair Value of Financial Instruments - Additional Quantitative Information, Assets Measured at Fair Value, Recurring and Nonrecurring Basis, Level 3 Input (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Debt securities
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value	$ 10,659
Debt securities | Discounted cash flow
Quantitative information for Level 3 Fair Value Measurements Assets
Default rates	1.00%
Prepayment rates	1.00%
Debt securities | Discounted cash flow | Minimum
Quantitative information for Level 3 Fair Value Measurements Assets
Discount margin / rate	0.40%
Debt securities | Discounted cash flow | Maximum
Quantitative information for Level 3 Fair Value Measurements Assets
Discount margin / rate	2.10%
Debt securities | Discounted cash flow | Weighted Average
Quantitative information for Level 3 Fair Value Measurements Assets
Discount margin / rate	0.70%
Loans measured for impairment
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value	$ 38,907
Estimated cost to sell	10.00%
Loans measured for impairment | Discounted cash flow | Minimum
Quantitative information for Level 3 Fair Value Measurements Assets
Discount margin / rate	4.25%
Loans measured for impairment | Discounted cash flow | Maximum
Quantitative information for Level 3 Fair Value Measurements Assets
Discount margin / rate	10.00%
Loans measured for impairment | Discounted cash flow | Weighted Average
Quantitative information for Level 3 Fair Value Measurements Assets
Discount margin / rate	7.50%
Real estate owned
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value	$ 5,462
Estimated cost to sell	10.00%

Guaranteed Preferred Benefici63

Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Derivatives - Narrative (Details)	Dec. 15, 2006USD ($)$ / sharesshares	Dec. 05, 2006USD ($)$ / sharesshares	Sep. 30, 2017USD ($)derivativetrust$ / sharesshares	Dec. 31, 2016USD ($)
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Interest Rate Swaps
Number of statutory business trusts owned | trust			2
Junior subordinated deferrable interest debentures held by trusts that issued guaranteed capital debt securities			$ 111,213,000	$ 111,213,000
Cash pledged as collateral to the counterparty			2,055,000	$ 3,005,000
Hedge ineffectiveness for swaps			$ 0
Interest rate swaps
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Interest Rate Swaps
Number of agreements | derivative			2
Cash pledged as collateral to the counterparty			$ 2,100,000
Fair value of the swap agreements			$ (1,500,000)
LNB
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Interest Rate Swaps
Number of statutory business trusts owned | trust			2
Trust preferred investments
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Interest Rate Swaps
Maximum period for which interest payment on the subordinated debentures can be deferred			5 years
Interest deferral			$ 0
Northwest Bancorp Capital Trust III | Trust preferred investments
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Interest Rate Swaps
Cumulative trust preferred securities issued (in shares) | shares		50,000
Cumulative trust preferred securities issued, liquidation value per preferred security (in dollars per security) | $ / shares		$ 1,000
Total value of cumulative trust preferred securities issued		$ 50,000,000
Variable rate basis		three-month LIBOR
Junior subordinated deferrable interest debentures held by trusts that issued guaranteed capital debt securities			$ 51,547,000
Northwest Bancorp Capital Trust III | Trust preferred investments | Interest rate swaps
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Interest Rate Swaps
Fixed rate (as a percent)			4.61%
Original term of swaps			10 years
Northwest Bancorp Capital Trust III | Trust preferred investments | LIBOR
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Interest Rate Swaps
Spread on variable rate basis (as a percent)		1.38%
Northwest Bancorp Statutory Trust IV | Trust preferred investments
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Interest Rate Swaps
Cumulative trust preferred securities issued (in shares) | shares	50,000
Cumulative trust preferred securities issued, liquidation value per preferred security (in dollars per security) | $ / shares	$ 1,000
Total value of cumulative trust preferred securities issued	$ 50,000,000
Variable rate basis	three-month LIBOR
Junior subordinated deferrable interest debentures held by trusts that issued guaranteed capital debt securities			$ 51,547,000
Northwest Bancorp Statutory Trust IV | Trust preferred investments | Interest rate swaps
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Interest Rate Swaps
Fixed rate (as a percent)			4.09%
Original term of swaps			10 years
Notional amount			$ 25,000,000
Northwest Bancorp Statutory Trust IV | Trust preferred investments | LIBOR
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Interest Rate Swaps
Spread on variable rate basis (as a percent)	1.38%
LNB Trust II | Interest rate swaps
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Interest Rate Swaps
Cumulative trust preferred securities issued (in shares) | shares			7,875
Cumulative trust preferred securities issued, liquidation value per preferred security (in dollars per security) | $ / shares			$ 1,000
Total value of cumulative trust preferred securities issued			$ 7,875,000
Junior subordinated deferrable interest debentures held by trusts that issued guaranteed capital debt securities			$ 8,119,000
LNB Trust II | LIBOR | Interest rate swaps
Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Interest Rate Swaps
Spread on variable rate basis (as a percent)			1.48%

Guaranteed Preferred Benefici64

Guaranteed Preferred Beneficial Interests in the Company's Junior Subordinated Deferrable Interest Debentures (Trust Preferred Securities) and Derivatives - Liability Derivatives (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Liability Derivatives, Included in Other Liabilities
Collateral posted	$ 2,055	$ 3,005
Designated as Hedging Instrument | Foreign exchange contract
Liability Derivatives, Included in Other Liabilities
Fair value and Foreign exchange fair value	1,538	2,736
Notional amount	50,000	50,000
Not Designated as Hedging Instrument | Foreign exchange contract
Liability Derivatives, Included in Other Liabilities
Fair value and Foreign exchange fair value	44	0
Notional amount	$ 4,578	$ 0

Changes in Accumulated Other 65

Changes in Accumulated Other Comprehensive Income/ (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Changes in accumulated other comprehensive income by component
Balance beginning of the period	$ 1,196,930	$ 1,155,455	$ 1,170,663	$ 1,163,163
Other comprehensive income/(loss)	(459)	(126)	2,384	4,892
Balance end of the period	1,205,847	1,162,803	1,205,847	1,162,803
Reclassification adjustment for gains included in net income, tax	(369)	(23)	(416)	1
Reclassification adjustment for prior period service costs included in net income, net of tax	221	224	662	675
Reclassification adjustment for prior period service costs included in net income, tax	153	144	460	432
Unrealized gains and (losses) on securities available- for-sale
Changes in accumulated other comprehensive income by component
Balance beginning of the period	2,276	7,866	395	3,325
Other comprehensive income before reclassification adjustments	(264)	(785)	1,684	3,717
Amounts reclassified from accumulated other comprehensive income	(674)	(36)	(741)	3
Other comprehensive income/(loss)	(938)	(821)	943	3,720
Balance end of the period	1,338	7,045	1,338	7,045
Reclassification adjustment for gains included in net income, before tax	1,043	59	1,157	(4)
Reclassification adjustment for gains included in net income, tax	(369)	(23)	(416)	1
Change in fair value of interest rate swaps
Changes in accumulated other comprehensive income by component
Balance beginning of the period	(1,257)	(2,753)	(1,778)	(2,779)
Other comprehensive income before reclassification adjustments	258	471	779	497
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Other comprehensive income/(loss)	258	471	779	497
Balance end of the period	(999)	(2,282)	(999)	(2,282)
Change in defined benefit pension plans
Changes in accumulated other comprehensive income by component
Balance beginning of the period	(26,167)	(24,630)	(26,608)	(25,081)
Other comprehensive income before reclassification adjustments	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	221	224	662	675
Other comprehensive income/(loss)	221	224	662	675
Balance end of the period	(25,946)	(24,406)	(25,946)	(24,406)
Reclassification adjustment for prior period service costs included in net income, net of tax	580	581	1,742	1,742
Reclassification adjustment for defined benefit plan loss included in net income, net of tax	(954)	(949)	(2,864)	(2,849)
Reclassification adjustment for prior period service costs included in net income, tax	153	144	460	432
Accumulated other comprehensive income
Changes in accumulated other comprehensive income by component
Balance beginning of the period	(25,148)	(19,517)	(27,991)	(24,535)
Other comprehensive income before reclassification adjustments	(6)	(314)	2,463	4,214
Amounts reclassified from accumulated other comprehensive income	(453)	188	(79)	678
Other comprehensive income/(loss)	(459)	(126)	2,384	4,892
Balance end of the period	$ (25,607)	$ (19,643)	$ (25,607)	$ (19,643)