Boston Private Financial (BPFH) 10-Q 5 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	9 Months Ended
	Sep. 30, 2018	Nov. 02, 2018
Document Information [Line Items]
Entity Registrant Name	BOSTON PRIVATE FINANCIAL HOLDINGS INC
Entity Central Index Key	821,127
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		84,377,380

Consolidated Balance Sheets Sta

Consolidated Balance Sheets Statement - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets:
Cash and cash equivalents	$ 92,634	$ 120,541
Investment securities available-for-sale (amortized cost of $1,101,756 and $1,182,427 at September 30, 2018 and December 31, 2017, respectively)	1,063,340	1,170,328
Investment securities held-to-maturity (fair value of $72,927 and $73,781 at September 30, 2018 and December 31, 2017, respectively)	75,468	74,576
Stock in Federal Home Loan Bank and Federal Reserve Bank	48,727	59,973
Loans held for sale	3,344	4,697
Total loans	6,720,420	6,505,028
Less: Allowance for loan losses	73,500	74,742
Net loans	6,646,920	6,430,286
Other real estate owned (“OREO”)	108	0
Premises and equipment, net	47,399	37,640
Goodwill	75,598	75,598
Intangible assets, net	13,834	16,083
Fees receivable	10,445	11,154
Accrued interest receivable	24,641	22,322
Deferred income taxes, net	27,833	29,031
Other assets	245,549	259,515
Total assets	8,375,840	8,311,744
Liabilities:
Deposits	6,768,723	6,510,246
Securities sold under agreements to repurchase	39,453	32,169
Federal funds purchased	120,000	30,000
Federal Home Loan Bank borrowings	441,836	693,681
Junior subordinated debentures	106,363	106,363
Other liabilities	149,770	135,880
Total liabilities	7,626,145	7,508,339
Redeemable Noncontrolling Interests	11,686	17,461
Shareholders’ Equity:
Preferred stock, $1.00 par value; authorized: 2,000,000 shares; Series D, 6.95% Non-Cumulative Perpetual, issued and outstanding: zero shares at September 30, 2018 and 50,000 shares at December 31, 2017; liquidation preference: $1,000 per share	0	47,753
Common stock, $1.00 par value; authorized: 170,000,000 shares; issued and outstanding: 84,602,519 shares at September 30, 2018 and 84,208,538 shares at December 31, 2017	84,603	84,208
Additional paid-in capital	614,157	607,929
Retained earnings	64,618	49,526
Accumulated other comprehensive income/ (loss)	(27,578)	(8,658)
Total Company's shareholders’ equity	735,800	780,758
Noncontrolling interests	2,209	5,186
Total shareholders' equity	738,009	785,944
Total liabilities, redeemable noncontrolling interests and shareholders’ equity	$ 8,375,840	$ 8,311,744

Consolidated Balance Sheets Par

Consolidated Balance Sheets Parentheticals - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Investment securities available-for-sale at amortized cost	$ 1,101,756	$ 1,182,427
Investment securities held-to-maturity at fair value	$ 72,927	$ 73,781
Preferred Stock, Par or Stated Value Per Share	$ 1	$ 1
Preferred Stock, Shares Authorized	2,000,000	2,000,000
Common Stock, Par or Stated Value Per Share	$ 1	$ 1
Common Stock, Shares Authorized	170,000,000	170,000,000
Common Stock, Shares, Issued	84,602,519	84,208,538
Common Stock, Shares, Outstanding	84,602,519	84,208,538
Series D Preferred Stock [Member]
Preferred Stock, Shares Issued	0	50,000
Preferred Stock, Shares Outstanding	0	50,000
Preferred Stock, Liquidation Preference Per Share	$ 1,000	$ 1,000

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest and dividend income:
Loans		$ 68,254	$ 58,096	$ 193,231	$ 169,468
Taxable investment securities		1,510	1,569	4,521	4,831
Non-taxable investment securities		1,779	1,664	5,261	4,925
Mortgage-backed securities		2,941	3,267	9,168	10,266
Short-term investments and other		1,617	916	3,831	2,347
Total interest and dividend income		76,101	65,512	216,012	191,837
Interest expense:
Deposits		11,487	5,356	26,376	14,836
Federal Home Loan Bank borrowings		3,877	2,657	11,668	7,257
Junior subordinated debentures		1,028	761	2,882	2,148
Repurchase agreements and other short-term borrowings		68	111	517	182
Total interest expense		16,460	8,885	41,443	24,423
Net interest income		59,641	56,627	174,569	167,414
Provision/ (credit) for loan losses		(949)	(432)	(2,291)	(6,727)
Net interest income after provision/ (credit) for loan losses		60,590	57,059	176,860	174,141
Fees and other income:
Gain on sale of loans, net		67	169	204	366
Gain/ (loss) on sale of investments, net		0	230	(17)	486
Gain/ (loss) on OREO, net		0	0	0	(46)
Other		722	970	1,245	1,738
Total fees and other income		32,314	40,267	104,152	114,791
Operating expense:
Salaries and employee benefits		38,944	44,912	125,461	133,889
Occupancy and equipment		8,164	7,944	24,141	22,412
Professional services		2,877	3,308	8,926	9,728
Marketing and business development		1,710	2,216	5,373	5,847
Information systems		6,233	5,282	18,889	16,161
Amortization of intangibles		750	1,426	2,249	4,278
FDIC insurance		674	647	2,126	2,292
Restructuring		5,763	0	5,763	0
Other		3,442	3,611	10,870	11,340
Total operating expense		68,557	69,346	203,798	205,947
Income before income taxes		24,347	27,980	77,214	82,985
Income tax expense		5,461	8,289	28,886	24,805
Net income from continuing operations		18,886	19,691	48,328	58,180
Net income/ (loss) from discontinued operations		0	1,186	1,696	3,881
Net income before attribution to noncontrolling interests		18,886	20,877	50,024	62,061
Less: Net income attributable to noncontrolling interests		(924)	(1,074)	(2,942)	(3,190)
Net income attributable to the Company		17,962	19,803	47,082	58,871
Adjustments to net income attributable to the Company to arrive at net income attributable to common shareholders		(829)	(1,146)	(4,376)	(2,889)
Net income attributable to common shareholders, treasury stock method		$ 17,133	$ 18,657	$ 42,706	$ 55,982
Basic earnings per share attributable to common shareholders:
From continuing operations:		$ 0.20	$ 0.21	$ 0.49	$ 0.63
From discontinued operations:		0	0.01	0.02	0.05
Total attributable to common shareholders:		0.20	0.23	0.51	0.68
Diluted earnings per share attributable to common shareholders:
From continuing operations:		0.20	0.21	0.48	0.61
From discontinued operations:		0	0.01	0.02	0.05
Total attributable to common shareholders:		$ 0.20	$ 0.22	$ 0.50	$ 0.66
Common Stock [Member]
Basic earnings per share attributable to common shareholders:
Weighted average basic common shares outstanding		84,017,284	82,556,225	83,544,754	82,270,849
Diluted earnings per share attributable to common shareholders:
Weighted average diluted common shares outstanding	[1]	85,498,568	84,888,311	85,254,295	84,741,172
Investment Managers Segment [Member]
Interest expense:
Net interest income	[2]	$ 0	$ 8	$ 6	$ 16
Fees and other income:
Revenue from Contract with Customer, Excluding Assessed Tax		3,245	11,274	18,897	33,194
Total fees and other income	[2]	3,245	11,280	18,887	33,230
Operating expense:
Amortization of intangibles	[2]	0	650	0	1,951
Total operating expense	[2]	2,235	8,407	13,880	25,107
Income before income taxes	[2]	1,010	2,881	5,013	8,139
Income tax expense	[2]	222	981	1,142	2,719
Net income from continuing operations	[2]	788	1,900	3,871	5,420
Less: Net income attributable to noncontrolling interests	[2]	(188)	(451)	(878)	(1,425)
Net income attributable to the Company	[2]	600	1,449	2,993	3,995
Wealth Advisors Segment [Member]
Interest expense:
Net interest income		99	36	224	82
Fees and other income:
Revenue from Contract with Customer, Excluding Assessed Tax		13,995	13,279	41,200	39,063
Total fees and other income		14,022	13,299	41,278	39,122
Operating expense:
Amortization of intangibles		49	49	146	146
Total operating expense		9,510	9,174	29,273	27,560
Income before income taxes		4,611	4,161	12,229	11,644
Income tax expense		1,242	1,562	3,242	4,360
Net income from continuing operations		3,369	2,599	8,987	7,284
Less: Net income attributable to noncontrolling interests		(736)	(623)	(2,064)	(1,765)
Net income attributable to the Company		2,633	1,976	6,923	5,519
Wealth Management and Trust Segment [Member]
Fees and other income:
Revenue from Contract with Customer, Excluding Assessed Tax		11,510	11,619	34,830	33,606
Total fees and other income		11,636	11,739	35,203	33,934
Operating expense:
Amortization of intangibles		701	727	2,103	2,181
Total operating expense		10,905	11,752	32,657	37,562
Income before income taxes		731	(13)	2,546	(3,628)
Income tax expense		220	(125)	729	(1,530)
Net income from continuing operations		511	112	1,817	(2,098)
Net income attributable to the Company		511	112	1,817	(2,098)
Other Banking Fee Income [Member]
Fees and other income:
Revenue from Contract with Customer, Excluding Assessed Tax		$ 2,775	$ 2,726	$ 7,793	$ 6,384
[1]	The diluted EPS computations for the three and nine months ended September 30, 2018 and 2017 do not assume the conversion, exercise, or contingent issuance of the following shares for the following periods because the result would have been anti-dilutive for the periods indicated. As a result of the anti-dilution, the potential common shares excluded from the diluted EPS computation are as follows: Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017Shares excluded due to exercise price exceeding the average market price of common shares during the period (total outstanding):(In thousands)Potential common shares from: Stock options408 48 226 74Total shares excluded due to exercise price exceeding the average market price of common shares during the period408 48 226 74
[2]	Results for the Investment Management segment for the three and nine months ended September 30, 2017 include results for DGHM and Anchor. Results for the Investment Management segment for the nine months ended September 30, 2018 include results for DGHM and results for Anchor through its sale date in April 2018. Assets for the Investment Management segment at September 30, 2017 include assets of DGHM and Anchor. Assets for the Investment Management segment at September 30, 2018 include assets of DGHM.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net income attributable to the Company	$ 17,962	$ 19,803	$ 47,082	$ 58,871
Other comprehensive income/ (loss), net of tax [Abstract]
Unrealized gain/ (loss) on securities available-for-sale	(4,040)	1,114	(18,888)	7,588
Reclassification adjustment for net realized (gain)/ loss included in net income	0	(141)	0	(293)
Net unrealized gain/ (loss) on securities available-for-sale	(4,040)	973	(18,888)	7,295
Unrealized gain/ (loss) on cash flow hedges	(138)	70	574	(140)
Reclassification adjustment for net realized (gain)/ loss included in net income	(72)	172	(273)	558
Net unrealized gain/ (loss) on cash flow hedges	(210)	242	301	418
Net unrealized gain/ (loss) on other	0	0	1	12
Other comprehensive income/ (loss), net of tax	(4,250)	1,215	(18,586)	7,725
Total comprehensive income, attributable to the Company, net	$ 13,712	$ 21,018	$ 28,496	$ 66,596

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock Including Additional Paid in Capital [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2016	$ 768,481	$ 47,753	$ 83,732	$ 597,454	$ 47,929	$ (12,548)	$ 4,161
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to the Company	58,871	0	0	0	58,871	0	0
Other comprehensive income/ (loss), net of tax	7,725	0	0	0	0	7,725	0
Dividends paid to common shareholders	(27,739)	0	0	0	(27,739)	0	0
Dividends paid to preferred shareholders	(2,606)	0	0	0	(2,606)	0	0
Net Change in Noncontrolling Interests	631	0	0	0	0	0	631
Net proceeds from issuance of [Abstract]
Net proceeds from issuance of common stock	1,601	0	140	1,461	0	0	0
Issuance of shares through incentive stock grants, net of shares forfeited, canceled, or withheld for employee taxes, value	(969)	0	(153)	(816)	0	0	0
Exercise of Warrants, Effect on Equity	1,879	0	261	1,618	0	0	0
Amortization of stock compensation and employee stock purchase plan	6,183	0	0	6,183	0	0	0
Stock options exercised	827	0	102	725	0	0	0
Other equity adjustments	177	0	0	177	0	0	0
Ending Balance at Sep. 30, 2017	815,061	47,753	84,082	606,802	76,455	(4,823)	4,792
Beginning Balance at Dec. 31, 2017	785,944	47,753	84,208	607,929	49,526	(8,658)	5,186
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification due to change in accounting principles	0	0	0	0	334	(334)	0
Net income attributable to the Company	47,082	0	0	0	47,082	0	0
Other comprehensive income/ (loss), net of tax	(18,586)	0	0	0	0	(18,586)	0
Dividends paid to common shareholders	(30,586)	0	0	0	(30,586)	0	0
Dividends paid to preferred shareholders	(1,738)	0	0	0	(1,738)	0	0
Net Change in Noncontrolling Interests	(2,977)	0	0	0	0	0	(2,977)
Stock Repurchased During Period, Value	(50,000)	(47,753)	0	(2,247)	0	0	0
Repurchase of common stock	1,905	0	137	1,768	0	0	0
Net proceeds from issuance of [Abstract]
Net proceeds from issuance of common stock	1,865	0	143	1,722	0	0	0
Issuance of shares through incentive stock grants, net of shares forfeited, canceled, or withheld for employee taxes, value	(1,952)	0	(253)	(1,699)	0	0	0
Exercise of Warrants, Effect on Equity	161	0	438	(277)	0	0	0
Amortization of stock compensation and employee stock purchase plan	5,131	0	0	5,131	0	0	0
Stock options exercised	1,661	0	204	1,457	0	0	0
Other equity adjustments	3,909	0	0	3,909	0	0	0
Ending Balance at Sep. 30, 2018	$ 738,009	$ 0	$ 84,603	$ 614,157	$ 64,618	$ (27,578)	$ 2,209

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity Parentheticals - $ / shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Common Stock, Dividends, Per Share, Cash Paid	$ 0.36	$ 0.33
Common Stock [Member]
Shares of common stock issued	142,738	140,284
Stock Repurchased During Period, Shares	(137,114)	0
Stock Issued During Period, Shares, Share-based Compensation, Gross	7,355	0
Stock Issued During Period, Shares, Share-based Compensation, Forfeited	(132,964)	(90,848)
Shares of stock withheld for employee taxes	(127,894)	(62,087)
Common Stock, Dividends, Per Share, Cash Paid	$ 0.36	$ 0.33

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income attributable to the Company		$ 47,082	$ 58,871
Adjustments to arrive at net income from continuing operations [Abstract]
Net income attributable to noncontrolling interests		(2,942)	(3,190)
Less: Net income from discontinued operations		(1,696)	(3,881)
Net income from continuing operations		48,328	58,180
Adjustments to reconcile net income from continuing operations to net cash provided by/(used in) operating activities:
Depreciation and amortization		17,192	15,835
Net income attributable to noncontrolling interests		(2,942)	(3,190)
Stock compensation, net of cancellations		5,232	6,183
Provision/ (credit) for loan losses		(2,291)	(6,727)
Loans originated for sale		(32,364)	(38,099)
Proceeds from sale of loans held for sale		33,935	39,972
Deferred income tax expense/ (benefit)		8,548	4,141
Net decrease/ (increase) in other operating activities		(14,348)	(9,407)
Net cash provided by/ (used in) operating activities of continuing operations		61,290	66,888
Net cash provided by/ (used in) operating activities of discontinued operations		1,696	3,881
Net cash provided by/ (used in) operating activities		62,986	70,769
Investment securities available for sale:
Purchases		(63,246)	(138,623)
Sales	[1]	51,781	119,238
Maturities, calls, redemptions, and principal payments		86,085	100,065
Investment securities held-to-maturity:
Purchases		11,876	14,945
Principal payments		10,726	23,541
(Investments)/ distributions in trusts, net		1,252	(747)
Purchase of additional Bank Owned Life Insurance (BOLI)		0	(50,000)
(Purchase)/ redemption of Federal Home Loan Bank and Federal Reserve Bank stock		11,246	(17,637)
Net (increase)/ decrease in portfolio loans		(217,317)	(298,304)
Proceeds from recoveries of loans previously charged-off		1,578	4,082
Proceeds from sale of OREO		0	1,644
Capital expenditures, net of sale proceeds		(18,349)	(10,769)
Proceeds from sale of affiliate		34,120	0
Net cash provided by/ (used in) investing activities		(114,000)	(282,455)
Cash flows from financing activities:
Net increase/ (decrease) in deposits		258,477	177,201
Net increase/ (decrease) in securities sold under agreements to repurchase		7,284	279
Net increase/ (decrease) in federal funds purchased		90,000	(10,000)
Net increase/ (decrease) in short-term Federal Home Loan Bank borrowings		(230,000)	110,000
Advances of long-term Federal Home Loan Bank borrowings		91,444	50,110
Repayments of long-term Federal Home Loan Bank borrowings		(113,289)	(81,542)
Redemption of Series D preferred stock		(50,000)	0
Dividends paid to common shareholders		(30,586)	(27,739)
Dividends paid to preferred shareholders		(1,738)	(2,606)
Proceeds from warrant exercises		161	1,879
Repurchase of common stock		1,905	0
Proceeds from stock option exercises		1,661	827
Proceeds from issuance of common stock, net		1,865	1,601
Tax withholding for share based compensation awards		(2,053)	(969)
Distributions paid to noncontrolling interests		(2,848)	(3,197)
Other equity adjustments		4,634	(275)
Net cash provided by/ (used in) financing activities		23,107	215,569
Net increase/ (decrease) in cash and cash equivalents		(27,907)	3,883
Cash and cash equivalents at beginning of year		120,541	106,557
Cash and cash equivalents at end of period		92,634	110,440
Supplementary schedule of non-cash investing and financing activities:
Cash paid for interest		40,703	23,681
Cash paid for income taxes, (net of refunds received)		18,898	32,051
Change in unrealized gain/ (loss) on available-for-sale securities, net of tax		(18,888)	7,295
Change in unrealized gain/ (loss) on cash flow hedges, net of tax		301	418
Change in unrealized gain/ (loss) on other, net of tax		1	12
Loans transferred into other real estate owned from loan portfolio		108	0
Loans charged-off		$ (529)	$ (559)
[1]	Included in Proceeds from sales are proceeds from the sale of money market mutual funds of $16.2 million and $51.8 million for the three and nine months ended September 30, 2018, respectively and $8.2 million and $53.6 million for the three and nine months ended September 30, 2017, respectively. Money market mutual funds maintain a constant net asset value of $1.00 and therefore have no realized gain or loss when sold.

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2018
Basis of Presentation and Summary of Significant Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies [Text Block]	Basis of Presentation and Summary of Significant Accounting Policies Boston Private Financial Holdings, Inc. (the “Company” or “BPFH”), is a bank holding company (the “Holding Company”) with four reportable segments: Private Banking, Wealth Management and Trust, Investment Management, and Wealth Advisory. The Private Banking segment is comprised of the banking operations of Boston Private Bank & Trust Company (the “Bank” or “Boston Private Bank”), a trust company chartered by The Commonwealth of Massachusetts whose deposits are insured by the Federal Deposit Insurance Corporation (the “FDIC”), and a wholly-owned subsidiary of the Company. Boston Private Bank is a member of the Federal Reserve Bank of Boston. Boston Private Bank primarily operates in three geographic markets: New England, the San Francisco Bay Area, and Southern California. The Wealth Management and Trust segment is comprised of the operations of Boston Private Wealth LLC (“Boston Private Wealth”), a wholly-owned subsidiary of Boston Private Bank, and the trust operations of Boston Private Bank. The segment offers investment management, wealth management, retirement plan advisory, family office, financial planning, and trust services to individuals, families, and institutions. The Wealth Management and Trust segment operates in New England; South Florida; California; and Madison, Wisconsin. The Investment Management segment had two consolidated affiliates, Dalton, Greiner, Hartman, Maher & Co., LLC (“DGHM”) and Anchor Capital Advisors, LLC (“Anchor”) (together, the “Investment Managers”) included in its results for the first quarter of 2018. The assets and liabilities of Anchor were classified as held for sale as of March 31, 2018 and December 31, 2017. Assets held for sale were $58.8 million at December 31, 2017, and liabilities held for sale were $3.2 million at December 31, 2017. In December 2017, the Company entered into an agreement to sell its entire ownership interest in Anchor in a transaction that would result in Anchor being majority-owned by members of its management team. The transaction closed in April 2018. The Investment Management segment results for the third quarter of 2018 include results from DGHM. The Investment Management segment results for the first nine months of 2018 include results from DGHM for the full period and results from Anchor for the portion of the period before the transaction was closed. The Wealth Advisory segment has two consolidated affiliates, consisting of KLS Professional Advisors Group, LLC (“KLS”) and Bingham, Osborn & Scarborough, LLC (“BOS”) (together, the “Wealth Advisors” and, together with the Wealth Management and Trust, and Investment Management segments, the “Wealth and Investment businesses”). On October 17, 2018, the Company announced an agreement to sell its entire ownership interest in BOS in a transaction that will result in BOS being majority-owned by members of its management team. The transaction is expected to close in the fourth quarter of 2018. Completion of the transaction is subject to obtaining client consents, as well as satisfaction of other customary closing conditions. As a result, the assets and liabilities of BOS will be classified as held for sale from October 17, 2018 through the date the transaction closes. See Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 15: Subsequent Event” for further details. The Company conducts substantially all of its business through its four reportable segments. All significant intercompany accounts and transactions have been eliminated in consolidation. The unaudited interim consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”), and include all necessary adjustments of a normal recurring nature which, in the opinion of management, are required for a fair presentation of the results of operations and financial condition of the Company. The interim results of consolidated operations are not necessarily indicative of the results for the entire year. The information in this report should be read in conjunction with the consolidated financial statements and accompanying notes included in the Annual Report on Form 10-K for the year ended December 31, 2017 , as filed with the Securities and Exchange Commission (“SEC”). Prior period amounts are reclassified whenever necessary to conform to the current period presentation. The Company’s significant accounting policies are described in Part II. Item 8. “Financial Statements and Supplementary Data - Note 1: Basis of Presentation and Summary of Significant Accounting Policies” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 , as filed with the SEC. For interim reporting purposes, the Company follows the same significant accounting policies, except for the following new accounting pronouncements from the Financial Accounting Standards Board (the “FASB”) that were adopted effective January 1, 2018: • Accounting Standards Update (“ASU”) 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (“ASU 2017-12”). As a result of implementing this standard, the Company reclassified $5 thousand in unrealized losses on derivatives related to hedge ineffectiveness from accumulated other comprehensive income to retained earnings as of January 1, 2018. This ASU will provide more flexibility in the Company’s risk management activities and we believe it will enhance the Company’s ability to employ risk management strategies, while improving the transparency and understanding of those strategies for financial statement users. • ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost ( “ASU 2017-07”). This amendment requires an employer to report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. As a result of the retrospective adoption of this ASU, $256 thousand and $597 thousand for the three and nine months ended September 30, 2017, respectively, have been reclassified from salaries and employee benefits expense to other expense within the Company’s consolidated statement of operations. For the three and nine months ended September 30, 2018, $131 thousand and $411 thousand , respectively, are presented within other expense that would have been presented within salaries and employee benefits prior to adoption of ASU 2017-07. • ASU 2016-15, Statement of Cash Flows (Topic 230) (“ASU 2016-15”). This update is intended to reduce diversity in practice in how certain transactions are classified in the statement of cash flows. This ASU is effective for the Company beginning on January 1, 2018. The guidance requires application using a retrospective transition method. This ASU did not have an impact on the Company’s consolidated financial statements. • ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”). This amendment requires equity investments to be measured at fair value with changes in fair value, net of tax, recognized in net income. As a result of implementing this standard, the Company reclassified $339 thousand in unrealized gains on available-for-sale equity investments, net of tax, from accumulated other comprehensive income to retained earnings as of January 1, 2018. Additionally, this amendment requires that entities use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. As a result of implementing this standard, the Company’s updated process includes identifying a fair value for loans using the exit price notion. See Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 5: Fair Value Measurements” for further details. • ASU 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”), which was subsequently amended by additional ASUs, including ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net) and ASU 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients , collectively, “ASU 2014-09 et al. ” ASU 2014-09 et al. was adopted using the modified retrospective transition method as of January 1, 2018, however no cumulative effect adjustment was required. This new guidance was applied to all revenue contracts in place at the date of adoption. See Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 13: Revenue Recognition” for further details.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	Earnings Per Share The treasury stock method of calculating earnings per share (“EPS”) is presented below for the three and nine months ended September 30, 2018 and 2017 . The following tables present the computations of basic and diluted EPS: Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (In thousands, except share and per share data) Basic earnings per share - Numerator: Net income from continuing operations $ 18,886 $ 19,691 $ 48,328 $ 58,180 Less: Net income attributable to noncontrolling interests 924 1,074 2,942 3,190 Net income from continuing operations attributable to the Company 17,962 18,617 45,386 54,990 Decrease/ (increase) in noncontrolling interests’ redemption values (1) (829 ) (278 ) (391 ) (283 ) Dividends on preferred stock (2) — (868 ) (3,985 ) (2,606 ) Total adjustments to income attributable to common shareholders (829 ) (1,146 ) (4,376 ) (2,889 ) Net income from continuing operations attributable to common shareholders, treasury stock method 17,133 17,471 41,010 52,101 Net income from discontinued operations — 1,186 1,696 3,881 Net income attributable to common shareholders, treasury stock method $ 17,133 $ 18,657 $ 42,706 $ 55,982 Basic earnings per share - Denominator: Weighted average basic common shares outstanding 84,017,284 82,556,225 83,544,754 82,270,849 Per share data - Basic earnings per share from: Continuing operations $ 0.20 $ 0.21 $ 0.49 $ 0.63 Discontinued operations $ — $ 0.01 $ 0.02 $ 0.05 Total attributable to common shareholders $ 0.20 $ 0.23 $ 0.51 $ 0.68 Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (In thousands, except share and per share data) Diluted earnings per share - Numerator: Net income from continuing operations attributable to common shareholders, after assumed dilution $ 17,133 $ 17,471 $ 41,010 $ 52,101 Net income from discontinued operations — 1,186 1,696 3,881 Net income attributable to common shareholders, after assumed dilution $ 17,133 $ 18,657 $ 42,706 $ 55,982 Diluted earnings per share - Denominator: Weighted average basic common shares outstanding 84,017,284 82,556,225 83,544,754 82,270,849 Dilutive effect of: Stock options, performance-based and time-based restricted stock, and performance-based and time-based restricted stock units, and other dilutive securities (3) 853,906 1,233,888 1,052,855 1,333,830 Warrants to purchase common stock (3) 627,378 1,098,198 656,686 1,136,493 Dilutive common shares 1,481,284 2,332,086 1,709,541 2,470,323 Weighted average diluted common shares outstanding (3) 85,498,568 84,888,311 85,254,295 84,741,172 Per share data - Diluted earnings per share from: Continuing operations $ 0.20 $ 0.21 $ 0.48 $ 0.61 Discontinued operations $ — $ 0.01 $ 0.02 $ 0.05 Total attributable to common shareholders $ 0.20 $ 0.22 $ 0.50 $ 0.66 Dividends per share declared and paid on common stock $ 0.12 $ 0.11 $ 0.36 $ 0.33 _____________________ (1) See Part II. Item 8. “Financial Statements and Supplementary Data - Note 14: Noncontrolling Interests” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 for a description of the redemption values related to the redeemable noncontrolling interests. In accordance with the FASB Accounting Standards Codification (“ASC”) 480, Distinguishing Liabilities from Equity (“ASC 480”), an increase in redemption value from period to period reduces income attributable to common shareholders. Decreases in redemption value from period to period increase income attributable to common shareholders, but only to the extent that the cumulative change in redemption value remains a cumulative increase since adoption of this standard in the first quarter of 2009. (2) Consideration paid in excess of carrying value for the redemption of the 6.95% Non-Cumulative Perpetual Preferred Stock, Series D (“the Series D preferred stock”) of $2.2 million is considered a deemed dividend and, for purposes of calculating EPS, reduces net income attributable to common shareholders for the three and nine months ended September 30, 2018. (3) The diluted EPS computations for the three and nine months ended September 30, 2018 and 2017 do not assume the conversion, exercise, or contingent issuance of the following shares for the following periods because the result would have been anti-dilutive for the periods indicated. As a result of the anti-dilution, the potential common shares excluded from the diluted EPS computation are as follows: Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Shares excluded due to exercise price exceeding the average market price of common shares during the period (total outstanding): (In thousands) Potential common shares from: Stock options 408 48 226 74 Total shares excluded due to exercise price exceeding the average market price of common shares during the period 408 48 226 74

Reportable Segments

Reportable Segments	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segment Reporting Disclosure [Text Block]	Reportable segments Management Reporting The Company has four reportable segments (Private Banking, Wealth Management and Trust, Investment Management, and Wealth Advisory), and the Holding Company (Boston Private Financial Holdings, Inc.). The financial performance of the Company is managed and evaluated by these four areas. The segments are managed separately as a result of the concentrations in each function. Measurement of Segment Profit and Assets The accounting policies of the segments are the same as those described in Part II. Item 8. “Financial Statements and Supplementary Data - Note 1: Basis of Presentation and Summary of Significant Accounting Policies” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . Revenues, expenses, and assets are recorded by each segment, and separate financial statements are reviewed by their management and the Company’s segment chief executive officers. Reconciliation of Reportable Segment Items The following tables present a reconciliation of the revenues, profits, assets, and other significant items of reportable segments as of and for the three and nine months ended September 30, 2018 and 2017 . Interest expense on junior subordinated debentures is reported at the Holding Company. Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Private Banking (In thousands) Net interest income $ 60,551 $ 57,295 $ 177,129 $ 169,334 Fees and other income 3,337 3,720 8,637 8,182 Total revenues 63,888 61,015 185,766 177,516 Provision/ (credit) for loan losses (949 ) (432 ) (2,291 ) (6,727 ) Operating expense 44,706 38,482 124,003 110,444 Income before income taxes 20,131 22,965 64,054 73,799 Income tax expense 4,469 6,634 13,063 22,112 Net income from continuing operations 15,662 16,331 50,991 51,687 Net income attributable to the Company $ 15,662 $ 16,331 $ 50,991 $ 51,687 Assets $ 8,292,901 $ 8,113,836 $ 8,292,901 $ 8,113,836 Depreciation $ 2,398 $ 1,431 $ 6,013 $ 4,145 Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Wealth Management and Trust (In thousands) Fees and other income $ 11,636 $ 11,739 $ 35,203 $ 33,934 Operating expense 10,905 11,752 32,657 37,562 Income/ (loss) before income taxes 731 (13 ) 2,546 (3,628 ) Income tax expense/ (benefit) 220 (125 ) 729 (1,530 ) Net income/ (loss) from continuing operations 511 112 1,817 (2,098 ) Net income/ (loss) attributable to the Company $ 511 $ 112 $ 1,817 $ (2,098 ) Assets $ 79,473 $ 73,511 $ 79,473 $ 73,511 Amortization of intangibles $ 701 $ 727 $ 2,103 $ 2,181 Depreciation $ 328 $ 330 $ 983 $ 1,008 Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Investment Management (1) (In thousands) Net interest income $ — $ 8 $ 6 $ 16 Fees and other income 3,245 11,280 18,887 33,230 Total revenues 3,245 11,288 18,893 33,246 Operating expense 2,235 8,407 13,880 25,107 Income before income taxes 1,010 2,881 5,013 8,139 Income tax expense 222 981 1,142 2,719 Net income from continuing operations 788 1,900 3,871 5,420 Noncontrolling interests 188 451 878 1,425 Net income attributable to the Company $ 600 $ 1,449 $ 2,993 $ 3,995 Assets $ 7,496 $ 93,910 $ 7,496 $ 93,910 Amortization of intangibles $ — $ 650 $ — $ 1,951 Depreciation $ 29 $ 62 $ 95 $ 189 Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Wealth Advisory (In thousands) Net interest income $ 99 $ 36 $ 224 $ 82 Fees and other income 14,022 13,299 41,278 39,122 Total revenues 14,121 13,335 41,502 39,204 Operating expense 9,510 9,174 29,273 27,560 Income before income taxes 4,611 4,161 12,229 11,644 Income tax expense 1,242 1,562 3,242 4,360 Net income from continuing operations 3,369 2,599 8,987 7,284 Noncontrolling interests 736 623 2,064 1,765 Net income attributable to the Company $ 2,633 $ 1,976 $ 6,923 $ 5,519 Assets $ 79,907 $ 77,289 $ 79,907 $ 77,289 Amortization of intangibles $ 49 $ 49 $ 146 $ 146 Depreciation $ 161 $ 237 $ 488 $ 698 Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Holding Company and Eliminations (In thousands) Net interest income $ (1,009 ) $ (711 ) $ (2,790 ) $ (2,018 ) Fees and other income 74 229 147 323 Total revenues (935 ) (482 ) (2,643 ) (1,695 ) Operating expense 1,201 1,531 3,985 5,274 Income/ (loss) before income taxes (2,136 ) (2,013 ) (6,628 ) (6,969 ) Income tax expense/ (benefit) (2) (692 ) (763 ) 10,710 (2,856 ) Net income/ (loss) from continuing operations (1,444 ) (1,250 ) (17,338 ) (4,113 ) Discontinued operations — 1,186 1,696 3,881 Net income/ (loss) attributable to the Company $ (1,444 ) $ (64 ) $ (15,642 ) $ (232 ) Assets (including eliminations) $ (83,937 ) $ (89,148 ) $ (83,937 ) $ (89,148 ) Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Total Company (In thousands) Net interest income $ 59,641 $ 56,627 $ 174,569 $ 167,414 Fees and other income 32,314 40,267 104,152 114,791 Total revenues 91,955 96,894 278,721 282,205 Provision/ (credit) for loan losses (949 ) (432 ) (2,291 ) (6,727 ) Operating expense 68,557 69,346 203,798 205,947 Income before income taxes 24,347 27,980 77,214 82,985 Income tax expense 5,461 8,289 28,886 24,805 Net income from continuing operations 18,886 19,691 48,328 58,180 Noncontrolling interests 924 1,074 2,942 3,190 Discontinued operations — 1,186 1,696 3,881 Net income attributable to the Company $ 17,962 $ 19,803 $ 47,082 $ 58,871 Assets $ 8,375,840 $ 8,269,398 $ 8,375,840 $ 8,269,398 Amortization of intangibles $ 750 $ 1,426 $ 2,249 $ 4,278 Depreciation $ 2,916 $ 2,060 $ 7,579 $ 6,040 _____________________ (1) Results for the Investment Management segment for the three and nine months ended September 30, 2017 include results for DGHM and Anchor. Results for the Investment Management segment for the nine months ended September 30, 2018 include results for DGHM and results for Anchor through its sale date in April 2018. Assets for the Investment Management segment at September 30, 2017 include assets of DGHM and Anchor. Assets for the Investment Management segment at September 30, 2018 include assets of DGHM. (2) Income tax expense/ (benefit) for the nine months ended September 30, 2018 include $12.7 million in additional expense related to the sale of Anchor in April 2018.

Investments

Investments	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	Investments The following tables present a summary of investment securities: Amortized Cost Unrealized Fair Value Gains Losses (In thousands) At September 30, 2018 Available-for-sale securities at fair value: U.S. government and agencies $ 35,025 $ — $ (1,526 ) $ 33,499 Government-sponsored entities 275,767 — (6,942 ) 268,825 Municipal bonds 304,473 1,130 (5,614 ) 299,989 Mortgage-backed securities (1) 479,412 208 (25,672 ) 453,948 Other (2) 7,079 — — 7,079 Total $ 1,101,756 $ 1,338 $ (39,754 ) $ 1,063,340 Held-to-maturity securities at amortized cost: U.S. government and agencies $ 11,964 — $ (1 ) $ 11,963 Mortgage-backed securities (1) 63,504 — (2,540 ) 60,964 Total $ 75,468 $ — $ (2,541 ) $ 72,927 At December 31, 2017 Available-for-sale securities at fair value: U.S. government and agencies $ 35,132 $ — $ (833 ) $ 34,299 Government-sponsored entities 305,101 22 (2,622 ) 302,501 Municipal bonds 299,647 4,559 (1,148 ) 303,058 Mortgage-backed securities (1) 521,753 491 (12,568 ) 509,676 Other (2) 20,794 — — 20,794 Total $ 1,182,427 $ 5,072 $ (17,171 ) $ 1,170,328 Held-to-maturity securities at amortized cost: Mortgage-backed securities (1) $ 74,576 $ — $ (795 ) $ 73,781 Total $ 74,576 $ — $ (795 ) $ 73,781 _____________________ (1) All mortgage-backed securities are guaranteed by the U.S. government, U.S. government agencies, or government-sponsored entities. (2) Included in Other available-for-sale securities as of September 30, 2018 and December 31, 2017 are primarily money market mutual fund securities. The following table presents the maturities of available-for-sale investment securities, based on contractual maturity, as of September 30, 2018 . Certain securities are callable before their final maturity. Additionally, certain securities (such as mortgage-backed securities) are shown within the table below based on their final (contractual) maturity, but due to prepayments and amortization are expected to have shorter lives. Available-for-sale Securities Amortized cost Fair value (In thousands) Within one year $ 106,582 $ 106,168 After one, but within five years 295,910 288,004 After five, but within ten years 294,991 279,099 Greater than ten years 404,273 390,069 Total $ 1,101,756 $ 1,063,340 The following table presents the maturities of held-to-maturity investment securities, based on contractual maturity, as of September 30, 2018 . Held-to-maturity Securities Amortized cost Fair value (In thousands) Within one year $ 11,964 $ 11,963 After one, but within five years — — After five, but within ten years 41,413 39,807 Greater than ten years 22,091 21,157 Total $ 75,468 $ 72,927 The following table presents the proceeds from sales, gross realized gains and gross realized losses for available-for-sale securities that were sold or called during the following periods as well as changes in the fair value of equity securities as prescribed by ASC 321, Investment - Equity Securities . ASU 2016-01, Recognition and Measurements of Financial Assets and Financial Liabilities was adopted on January 1, 2018, at which time a cumulative effect adjustment of $339 thousand was recorded to reclassify the amount of accumulated unrealized gains related to equity securities from accumulated other comprehensive income to retained earnings. Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (In thousands) Proceeds from sales (1) $ 16,231 $ 16,207 $ 51,781 $ 119,238 Realized gains — 235 7 509 Realized losses — (5 ) (1 ) (23 ) Change in unrealized gain/ (loss) on equity securities reflected in the consolidated statement of operations — n/a (23 ) n/a _____________________ (1) Included in Proceeds from sales are proceeds from the sale of money market mutual funds of $16.2 million and $51.8 million for the three and nine months ended September 30, 2018 , respectively and $8.2 million and $53.6 million for the three and nine months ended September 30, 2017, respectively. Money market mutual funds maintain a constant net asset value of $1.00 and therefore have no realized gain or loss when sold. The following tables present information regarding securities at September 30, 2018 and December 31, 2017 having temporary impairment, due to the fair values having declined below the amortized cost of the individual securities, and the time period that the investments have been temporarily impaired. Less than 12 months 12 months or longer Total Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses # of securities (In thousands, except number of securities) September 30, 2018 Available-for-sale securities U.S. government and agencies $ 4,966 $ (31 ) $ 28,533 $ (1,495 ) $ 33,499 $ (1,526 ) 6 Government-sponsored entities 127,616 (1,937 ) 141,209 (5,005 ) 268,825 (6,942 ) 40 Municipal bonds 192,479 (2,799 ) 47,750 (2,815 ) 240,229 (5,614 ) 124 Mortgage-backed securities (1) 30,247 (960 ) 410,701 (24,712 ) 440,948 (25,672 ) 110 Total $ 355,308 $ (5,727 ) $ 628,193 $ (34,027 ) $ 983,501 $ (39,754 ) 280 Held-to-maturity securities U.S. government and agencies 11,963 (1 ) — — 11,963 (1 ) 2 Mortgage-backed securities (1) $ 8,866 $ (307 ) $ 52,098 $ (2,233 ) $ 60,964 $ (2,540 ) 16 Total $ 20,829 $ (308 ) $ 52,098 $ (2,233 ) $ 72,927 $ (2,541 ) 18 Less than 12 months 12 months or longer Total Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses # of securities (In thousands, except number of securities) December 31, 2017 Available-for-sale securities U.S. government and agencies $ 14,902 $ (79 ) $ 19,397 $ (754 ) $ 34,299 $ (833 ) 6 Government-sponsored entities 220,275 (1,350 ) 38,273 (1,272 ) 258,548 (2,622 ) 36 Municipal bonds 46,112 (131 ) 50,842 (1,017 ) 96,954 (1,148 ) 63 Mortgage-backed securities (1) 97,117 (903 ) 386,785 (11,665 ) 483,902 (12,568 ) 103 Total $ 378,406 $ (2,463 ) $ 495,297 $ (14,708 ) $ 873,703 $ (17,171 ) 208 Held-to-maturity securities Mortgage-backed securities (1) $ 59,218 $ (534 ) $ 14,563 $ (261 ) $ 73,781 $ (795 ) 16 Total $ 59,218 $ (534 ) $ 14,563 $ (261 ) $ 73,781 $ (795 ) 16 _____________________ (1) All mortgage-backed securities are guaranteed by the U.S. government, U.S. government agencies, or government-sponsored entities. As of September 30, 2018 , the U.S. government and agencies securities, government-sponsored entities securities and mortgage-backed securities in the first table above had current Standard and Poor’s credit ratings of AAA. The municipal bonds in the first table above had a current Standard and Poor’s credit rating of at least AA-. As of December 31, 2017, the U.S. government and agencies securities and government-sponsored entities securities in the second table above had current Moody’s credit ratings of Aaa. The mortgage-backed securities in the second table above had a current Standard and Poor’s credit rating of at least AA. The municipal bonds in the second table above had a current Standard and Poor’s credit rating of at least AA- or a current Moody’s credit rating of at least Aa3. At September 30, 2018 and December 31, 2017 , the Company does not consider these investments other-than-temporarily impaired as the decline in fair value on investments is primarily attributed to changes in interest rates and not credit quality. At September 30, 2018 and December 31, 2017 , the amount of investment securities in an unrealized loss position greater than 12 months, as well as in total, was primarily due to changes in interest rates and not credit quality. As of September 30, 2018 , the Company had no intent to sell any securities in an unrealized loss position and it is not more likely than not that the Company would be forced to sell any of these securities prior to the full recovery of all unrealized loss amounts. Cost method investments, which are included in other assets, can be temporarily impaired when the fair values decline below the amortized costs of the individual investments. There were no cost method investments with unrealized losses as of September 30, 2018 or December 31, 2017 . The Company’s cost method investments primarily include low income housing partnerships which generate tax credits. The Company also holds partnership interests in venture capital funds formed to provide financing to small businesses and to promote community development. The Company had $55.0 million and $39.4 million in cost method investments included in other assets as of September 30, 2018 and December 31, 2017 , respectively.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	Fair Value Measurements Fair value is defined under GAAP as the exchange price that would be received to sell an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants on the measurement date. The Company determines the fair values of its financial instruments based on the fair value hierarchy established in ASC 820, Fair Value Measurements and Disclosures (“ASC 820”), which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. ASC 820 describes three levels of inputs that may be used to measure fair value. Financial instruments are considered Level 1 when valuation can be based on quoted prices in active markets for identical assets or liabilities. Level 2 financial instruments are valued using quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or models using inputs that are observable or can be corroborated by observable market data of substantially the full term of the assets or liabilities. Financial instruments are considered Level 3 when their values are determined using pricing models, discounted cash flow methodologies or similar techniques and at least one significant model assumption or input is unobservable and when determination of the fair value requires significant management judgment or estimation. The following tables present the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2018 and December 31, 2017 , aggregated by the level in the fair value hierarchy within which those measurements fall: As of September 30, 2018 Fair value measurements at reporting date using: Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) (In thousands) Assets: Available-for-sale securities: U.S. government and agencies $ 33,499 $ — $ 33,499 $ — Government-sponsored entities 268,825 — 268,825 — Municipal bonds 299,989 — 299,989 — Mortgage-backed securities 453,948 — 453,948 — Other (1) 7,079 7,079 — — Total available-for-sale securities 1,063,340 7,079 1,056,261 — Derivatives - interest rate customer swaps 27,792 — 27,792 — Derivatives - interest rate swaps 903 — 903 — Derivatives - risk participation agreement 20 — 20 — Trading securities held in the “rabbi trust” (2) 7,806 7,806 — — Liabilities: Derivatives - interest rate customer swaps $ 28,209 $ — $ 28,209 $ — Derivatives - risk participation agreement 90 — 90 — Deferred compensation “rabbi trust” (2) 7,806 7,806 — — Fair value measurements at reporting date using: As of December 31, 2017 Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) (In thousands) Assets: Available-for-sale securities: U.S. government and agencies $ 34,299 $ 34,096 $ 203 $ — Government-sponsored entities 302,501 — 302,501 — Municipal bonds 303,058 — 303,058 — Mortgage-backed securities 509,676 — 509,676 — Other 20,794 20,794 — — Total available-for-sale securities 1,170,328 54,890 1,115,438 — Derivatives - interest rate customer swaps 18,575 — 18,575 — Derivatives - interest rate swaps 555 — 555 — Derivatives - risk participation agreements 1 — 1 — Derivatives - customer foreign exchange forwards 2 — 2 — Trading securities held in the “rabbi trust” (2) 7,062 7,062 — — Liabilities: Derivatives - interest rate customer swaps $ 18,953 $ — $ 18,953 $ — Derivatives - interest rate swaps 80 — 80 — Derivatives - risk participation agreements 108 — 108 — Derivatives - customer foreign exchange forwards 2 — 2 — Deferred compensation “rabbi trust” (2) 7,062 7,062 — — _____________________ (1) Other available-for-sale securities as of September 30, 2018 and December 31, 2017 consisted of primarily money market mutual fund securities. (2) The Company has adopted a special trust for the Deferred Compensation Plan called a “rabbi trust.” The rabbi trust is an arrangement that is used to accumulate assets that may be used to fund the Company’s obligation to pay benefits under the Deferred Compensation Plan. To prevent immediate taxation to the executives who participate in the Deferred Compensation Plan, the amounts placed in the rabbi trust must remain subject to the claims of the Company’s creditors. The investments chosen by the participants in the Deferred Compensation Plan are mirrored by the rabbi trust as a way to minimize the earnings volatility of the Deferred Compensation Plan. As of September 30, 2018 and December 31, 2017 , available-for-sale securities consisted of U.S. government and agencies securities, government-sponsored entities securities, municipal bonds, mortgage-backed securities, and other available-for-sale securities. Available-for-sale Level 1 securities are valued with prices quoted in active markets and include current issuances or “on-the-run” U.S. Treasury securities (which are categorized as U.S. government and agencies securities), money market mutual funds and equities (which are categorized as other available-for-sale securities). Available-for-sale Level 2 securities generally have quoted prices but are traded less frequently than exchange-traded securities and can be priced using market data from similar assets and include government-sponsored entities securities, municipal bonds, mortgage-backed securities, “off-the-run” U.S. Treasury securities, and certain investments in SBA loans (which are categorized as U.S. government and agencies securities). “Off-the-run” U.S. Treasury securities are Treasury bonds and notes issued before the most recently issued bond or note of a particular maturity. When Treasuries move to the secondary over-the-counter market, they become less frequently traded, therefore, they are considered “off-the-run”. No investments held as of September 30, 2018 or December 31, 2017 were categorized as Level 3. There were no changes in the valuation techniques used for measuring the fair value of available-for-sale securities in the nine months ended September 30, 2018 . In managing its interest rate and credit risk, the Company utilizes derivative instruments including interest rate customer swaps, interest rate swaps, and risk participation agreements. As a service to its customers, the Company may utilize derivative instruments including customer foreign exchange forward contracts to manage its foreign exchange risk, if any. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities, and therefore, they have been categorized as a Level 2 measurement as of September 30, 2018 and December 31, 2017 . See Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 8: Derivatives and Hedging Activities” for further details. To comply with the provisions of ASC 820, the Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and guarantees. Counterparty exposure is evaluated by netting positions that are subject to master netting agreements, as well as considering the amount of collateral securing the position. The Company has determined that the majority of inputs used to value its derivatives are within Level 2. As a result, the Company has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy as of September 30, 2018 and December 31, 2017 . Trading securities held in the rabbi trust consist of publicly traded mutual fund investments that are valued at prices quoted in active markets. Therefore, they have been categorized as Level 1 as of September 30, 2018 and December 31, 2017 . The Company accounts for its investments held in the rabbi trust in accordance with ASC 320, Investments - Debt and Equity Securities. The investments held in the rabbi trust are classified as trading securities. The assets of the rabbi trust are carried at their fair value within Other assets on the consolidated balance sheet. Changes in the fair value of the securities are recorded as an increase or decrease in Other income each quarter. The deferred compensation liability reflects the market value of the securities selected by the participants and is included within Other liabilities on the consolidated balance sheet. Changes in the fair value of the liability are recorded as an increase or decrease in Other expense each quarter. At September 30, 2018 , five U.S. Treasury securities totaling $33.4 million were transferred from Level 1 to Level 2 as the securities were determined to be “off-the-run”. There were no other transfers for assets or liabilities recorded at fair value on a recurring basis at December 31, 2017 . There were no Level 3 assets valued on a recurring basis at September 30, 2018 or December 31, 2017 . The following tables present the Company’s assets and liabilities measured at fair value on a non-recurring basis during the periods ended September 30, 2018 and 2017, respectively, aggregated by the level in the fair value hierarchy within which those measurements fall. As of September 30, 2018 Fair value measurements at reporting date using: Gain (losses) from fair value changes Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Three months ended September 30, 2018 Nine months ended September 30, 2018 (In thousands) Assets: Impaired loans (1) $ 2,005 $ — $ — $ 2,005 $ (440 ) $ (1,367 ) _____________________ (1) Collateral-dependent impaired loans held at September 30, 2018 that had write-downs in fair value or whose specific reserve changed during the first nine months of 2018 . As of September 30, 2017 Fair value measurements at reporting date using: Gain (losses) from fair value changes Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Three months ended September 30, 2017 Nine months ended September 30, 2017 (In thousands) Assets: Impaired loans (1) $ 1,978 $ — $ — $ 1,978 $ (255 ) $ (474 ) _____________________ (1) Collateral-dependent impaired loans held at September 30, 2017 that had write-downs in fair value or whose specific reserve changed during the first nine months of 2017 . The following tables present additional quantitative information about assets measured at fair value on a non-recurring basis for which the Company has utilized Level 3 inputs to determine fair value: As of September 30, 2018 Fair Value Valuation Technique Unobservable Input Range of Inputs Utilized Weighted Average of Inputs Utilized (In thousands) Impaired Loans $ 2,005 Appraisals of Collateral Discount for costs to sell 0% - 23% 6% Appraisal adjustments —% —% As of September 30, 2017 Fair Value Valuation Technique Unobservable Input Range of Inputs Utilized Weighted Average of Inputs Utilized (In thousands) Impaired Loans $ 1,978 Appraisals of Collateral Discount for costs to sell 0% - 7% 4% Appraisal adjustments 0% - 51% 17% Impaired loans include those loans that were adjusted to the fair value of underlying collateral as required under ASC 310, Receivables . The amount does not include impaired loans that are measured based on expected future cash flows discounted at the respective loan’s original effective interest rate, as that amount is not considered a fair value measurement. The Company uses appraisals, which management may adjust to reflect estimated fair value declines, or may apply other discounts to appraised values for unobservable factors resulting from its knowledge of the property or consideration of broker quotes. The appraisers use a market, income, and/or a cost approach in determining the value of the collateral. Therefore they have been categorized as a Level 3 measurement. The following tables present the carrying values and fair values of the Company’s financial instruments that are not measured at fair value on a recurring basis: As of September 30, 2018 Book Value Fair Value Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) (In thousands) FINANCIAL ASSETS: Cash and cash equivalents $ 92,634 $ 92,634 $ 92,634 $ — $ — Investment securities held-to-maturity 75,468 72,927 — 72,927 — Loans held for sale 3,344 3,374 — 3,374 — Loans, net 6,646,920 6,542,225 — — 6,542,225 Other financial assets 83,813 83,813 — 83,813 — FINANCIAL LIABILITIES: Deposits 6,768,723 6,765,393 — 6,765,393 — Securities sold under agreements to repurchase 39,453 39,453 — 39,453 — Federal funds purchased 120,000 120,000 — 120,000 — Federal Home Loan Bank borrowings 441,836 437,887 — 437,887 — Junior subordinated debentures 106,363 96,363 — — 96,363 Other financial liabilities 2,964 2,964 — 2,964 — As of December 31, 2017 Book Value Fair Value Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) (In thousands) FINANCIAL ASSETS: Cash and cash equivalents $ 120,541 $ 120,541 $ 120,541 $ — $ — Investment securities held-to-maturity 74,576 73,781 — 73,781 — Loans held for sale 4,697 4,737 — 4,737 — Loans, net 6,430,286 6,388,297 — — 6,388,297 Other financial assets 93,449 93,449 — 93,449 — FINANCIAL LIABILITIES: Deposits 6,510,246 6,509,197 — 6,509,197 — Securities sold under agreements to repurchase 32,169 32,169 — 32,169 — Federal funds purchased 30,000 30,000 — 30,000 — Federal Home Loan Bank borrowings 693,681 692,402 — 692,402 — Junior subordinated debentures 106,363 96,363 — — 96,363 Other financial liabilities 2,224 2,224 — 2,224 — The estimated fair values have been determined by using available quoted market information or other appropriate valuation methodologies. The aggregate fair value amounts presented above do not represent the underlying value of the financial assets and liabilities of the Company taken as a whole as they do not reflect any premium or discount the Company might recognize if the assets were sold or the liabilities sold, settled, or redeemed. An excess of fair value over book value on financial assets represents a premium, or gain, the Company might recognize if the assets were sold, while an excess of book value over fair value on financial liabilities represents a premium, or gain, the Company might recognize if the liabilities were sold, settled, or redeemed prior to maturity. Conversely, losses would be recognized if assets were sold where the book value exceeded the fair value or liabilities were sold where the fair value exceeded the book value. The fair value estimates provided are made at a specific point in time, based on relevant market information and the characteristics of the financial instrument. The estimates do not provide for any premiums or discounts that could result from concentrations of ownership of a financial instrument. Because no active market exists for some of the Company’s financial instruments, certain fair value estimates are based on subjective judgments regarding current economic conditions, risk characteristics of the financial instruments, future expected loss experience, prepayment assumptions, and other factors. The resulting estimates involve uncertainties and are considered best estimates. Changes made to any of the underlying assumptions could significantly affect the estimates. Cash and cash equivalents The carrying value reported in the balance sheet for cash and cash equivalents approximates fair value due to the short-term nature of their maturities and are classified as Level 1. Investment securities held-to-maturity Investment securities held-to-maturity securities currently include mortgage-backed securities and a U.S. Treasury security. The U.S Treasury security as of September 30, 2018 is an “off-the-run” U.S. Treasury security, therefore, it has been categorized as a Level 2 measurement. There were no U.S. Treasury securities held-to-maturity as of December 31, 2017. The mortgage-backed securities are fixed income instruments that are not quoted on an exchange, but may be traded in active markets. The fair value of these securities is based on quoted market prices obtained from external pricing services. The principal market for our securities portfolio is the secondary institutional market, with an exit price that is predominantly reflective of bid level pricing in that market. Accordingly, held-to-maturity mortgage-backed securities are included in the Level 2 fair value category. At September 30, 2018, one U.S. Treasury security totaling $12.0 million was transferred from Level 1 to Level 2 as the security was determined to be “off-the-run”. There were no other transfers of the Company’s financial instruments that are not measured at fair value on a recurring basis at December 31, 2017 . Loans held for sale Loans held for sale are recorded at the lower of cost or fair value in the aggregate. Fair value estimates are based on actual commitments to sell the loans to investors at an agreed upon price or current market prices if rates have changed since the time the loan closed. Accordingly, loans held for sale are included in the Level 2 fair value category. Loans, net Fair value estimates are based on loans with similar financial characteristics. Following the adoption of ASU 2016-01 in 2018, the Company updated its process for estimating the fair value of loans, net of allowance for loan losses. The updated process estimates the fair value of loans using the exit price notion, which includes identifying an exit price using current market information for origination rates and making certain adjustments to incorporate credit risk, transaction costs and other adjustments utilizing publicly available rates and indicies. Loans, net are included in the Level 3 fair value category based upon the inputs and valuation techniques used. See Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 1: Basis of Presentation and Summary of Significant Accounting Policies” for additional information on ASU 2016-01. Other financial assets Other financial assets consist of accrued interest and fees receivable, and stock in the Federal Home Loan Bank of Boston (“FHLB”) and the Federal Reserve Bank (“FRB”), for which the carrying amount approximates fair value, and are classified as Level 2. Deposits The fair values reported for transaction accounts (demand, NOW, savings, and money market) equal their respective book values reported on the balance sheet and are classified as Level 2. The fair values disclosed are, by definition, equal to the amount payable on demand at the reporting date. The fair values for certificates of deposit are based on the discounted value of contractual cash flows. The discount rates used are representative of approximate rates currently offered on certificates of deposit with similar remaining maturities and are classified as Level 2. Securities sold under agreements to repurchase The fair value of securities sold under agreements to repurchase is estimated based on contractual cash flows discounted at the Bank’s incremental borrowing rate for FHLB borrowings with similar maturities and have been classified as Level 2. Federal funds purchased The carrying amounts of federal funds purchased, if any, approximate fair value due to their short-term nature and therefore these funds have been classified as Level 2. Federal Home Loan Bank borrowings The fair value reported for FHLB borrowings is estimated based on the discounted value of contractual cash flows. The discount rate used is based on the Bank’s estimated current incremental borrowing rate for FHLB borrowings of similar maturities and therefore these borrowings have been classified as Level 2. Junior subordinated debentures The fair value of the junior subordinated debentures issued by Boston Private Capital Trust I and Boston Private Capital Trust II were estimated using Level 3 inputs such as the interest rates on these securities, current rates for similar debt, a consideration for illiquidity of trading in the debt, and regulatory changes that would result in an unfavorable change in the regulatory capital treatment of this type of debt. Other financial liabilities Other financial liabilities consists of accrued interest payable for which the carrying amount approximates fair value and is classified as Level 2. Financial instruments with off-balance sheet risk The Bank’s commitments to originate loans and for unused lines and outstanding letters of credit are primarily at market interest rates and therefore, the carrying amount approximates fair value.

Loan Portfolio and Credit Quali

Loan Portfolio and Credit Quality	9 Months Ended
	Sep. 30, 2018
Loans and Leases Receivable Disclosure [Abstract]
Financing Receivables [Text Block]	Loan Portfolio and Credit Quality The Bank’s lending activities are conducted principally in the regions of New England, the San Francisco Bay Area, and Southern California. The Bank originates single and multi-family residential loans, commercial real estate loans, commercial and industrial loans, commercial tax-exempt loans, construction and land loans, and home equity and other consumer loans. Most loans are secured by borrowers’ personal or business assets. The ability of the Bank’s single family residential and consumer borrowers to honor their repayment commitments is generally dependent on the level of overall economic conditions within the Bank’s lending areas. Commercial, construction, and land borrowers’ ability to repay is generally dependent upon the health of the economy and real estate values, including, in particular, the performance of the construction sector. Accordingly, the ultimate collectability of a substantial portion of the Bank’s loan portfolio is susceptible to changing conditions in the New England, the San Francisco Bay Area, and Southern California economies and real estate markets. The following table presents a summary of the loan portfolio based on the portfolio segment as of the dates indicated: September 30, 2018 December 31, 2017 (In thousands) Commercial and industrial $ 583,214 $ 520,992 Commercial tax-exempt 438,807 418,698 Total commercial and industrial 1,022,021 939,690 Commercial real estate 2,399,080 2,440,220 Construction and land 197,524 164,990 Residential 2,862,879 2,682,533 Home equity 93,390 99,958 Consumer and other 145,526 177,637 Total $ 6,720,420 $ 6,505,028 The following table presents nonaccrual loans receivable by class of receivable as of the dates indicated: September 30, 2018 December 31, 2017 (In thousands) Commercial and industrial $ 1,968 $ 748 Commercial tax-exempt — — Total commercial and industrial 1,968 748 Commercial real estate 546 1,985 Construction and land — 110 Residential 6,798 8,470 Home equity 2,773 2,840 Consumer and other 12 142 Total $ 12,097 $ 14,295 The Bank’s policy is to discontinue the accrual of interest on a loan when the collectability of principal or interest is in doubt. In certain instances, although infrequent, loans that have become 90 days or more past due may remain on accrual status if the value of the collateral securing the loan is sufficient to cover principal and interest and the loan is in the process of collection. There were no loans 90 days or more past due, but still accruing as of both September 30, 2018 and December 31, 2017 . The Bank’s policy for returning a loan to accrual status requires the loan to be brought current and for the client to show a history of making timely payments (generally six consecutive months). For troubled debt restructured loans (“TDRs”), a return to accrual status generally requires timely payments for a period of six months in accordance with the restructured loan terms, along with meeting other criteria. The following tables show the payment status of loans receivable by class of receivable as of the dates indicated: September 30, 2018 Accruing Past Due Nonaccrual Loans 30-59 Days Past Due 60-89 Days Past Due Total Accruing Past Due Current 30-89 Days Past Due 90 Days or Greater Past Due Total Non-Accrual Loans Current Accruing Loans Total Loans Receivable (In thousands) Commercial and industrial $ 1,645 $ 2,686 $ 4,331 $ 1,213 $ 43 $ 712 $ 1,968 $ 576,915 $ 583,214 Commercial tax-exempt — — — — — — — 438,807 438,807 Commercial real estate 326 661 987 — — 546 546 2,397,547 2,399,080 Construction and land — — — — — — — 197,524 197,524 Residential — 4,518 4,518 1,134 197 5,467 6,798 2,851,563 2,862,879 Home equity 901 867 1,768 — — 2,773 2,773 88,849 93,390 Consumer and other 3 — 3 2 10 — 12 145,511 145,526 Total $ 2,875 $ 8,732 $ 11,607 $ 2,349 $ 250 $ 9,498 $ 12,097 $ 6,696,716 $ 6,720,420 December 31, 2017 Accruing Past Due Nonaccrual Loans 30-59 Days Past Due 60-89 Days Past Due Total Accruing Past Due Current 30-89 Days Past Due 90 Days or Greater Past Due Total Non-Accrual Loans Current Accruing Loans Total Loans Receivable (In thousands) Commercial and industrial $ 10,903 $ 849 $ 11,752 $ 355 $ — $ 393 $ 748 $ 508,492 $ 520,992 Commercial tax-exempt — — — — — — — 418,698 418,698 Commercial real estate 4,043 — 4,043 163 — 1,822 1,985 2,434,192 2,440,220 Construction and land — — — — — 110 110 164,880 164,990 Residential 7,239 1,635 8,874 805 3,172 4,493 8,470 2,665,189 2,682,533 Home equity 355 — 355 — 71 2,769 2,840 96,763 99,958 Consumer and other 24 — 24 17 125 — 142 177,471 177,637 Total $ 22,564 $ 2,484 $ 25,048 $ 1,340 $ 3,368 $ 9,587 $ 14,295 $ 6,465,685 $ 6,505,028 Nonaccrual and delinquent loans are affected by many factors, such as economic and business conditions, interest rates, unemployment levels, and real estate collateral values, among others. In periods of prolonged economic decline, borrowers may become more severely affected over time as liquidity levels decline and the borrower’s ability to continue to make payments deteriorates. With respect to real estate collateral values, the declines from the peak, as well as the value of the real estate at the time of origination versus the current value, can impact the level of problem loans. For instance, if the loan to value ratio at the time of renewal has increased due to the decline in the real estate value since origination, the loan may no longer meet the Bank’s underwriting standards and may be considered for classification as a problem loan dependent upon a review of risk factors. Generally when a collateral dependent loan becomes impaired, an updated appraisal of the collateral, if appropriate, is obtained. If the impaired loan has not been upgraded to a performing status within a reasonable amount of time, the Bank will continue to obtain updated appraisals as deemed necessary, especially during periods of declining property values. The past due status of a loan is determined in accordance with its contractual repayment terms. All loan types are reported past due when one scheduled payment is due and unpaid for 30 days or more. Credit Quality Indicators The Bank uses a risk rating system to monitor the credit quality of its loan portfolio. Loan classifications are assessments made by the Bank of the status of the loans based on the facts and circumstances known to the Bank, including management’s judgment, at the time of assessment. Some or all of these classifications may change in the future if there are unexpected changes in the financial condition of the borrower, including but not limited to, changes resulting from continuing deterioration in general economic conditions on a national basis or in the local markets in which the Bank operates adversely affecting, among other things, real estate values. Such conditions, as well as other factors which adversely affect borrowers’ ability to service or repay loans, typically result in changes in loan default and charge-off rates, and increased provisions for loan losses, which would adversely affect the Company’s financial performance and financial condition. These circumstances are not entirely foreseeable and, as a result, it may not be possible to accurately reflect them in the Company’s analysis of credit risk. Generally, only commercial loans, including commercial real estate, other commercial and industrial loans, commercial tax-exempt loans, and construction and land loans, are given a numerical grade. A summary of the rating system used by the Bank, repeated here from Part II. Item 8. “Financial Statements and Supplementary Data - Note 1: Basis of Presentation and Summary of Significant Accounting Policies,” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017, follows: Pass - All loans graded as pass are considered acceptable credit quality by the Bank and are grouped for purposes of calculating the allowance for loan losses. For residential, home equity and consumer loans, the Bank classifies loans as pass unless there is known information such as delinquency or client requests for modifications which, due to financial difficulty, would then generally result in a risk rating such as special mention or more severe depending on the factors. Special Mention - Loans rated in this category are defined as having potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may, at some future date, result in the deterioration of the repayment prospects for the credit or the Bank’s credit position. These loans are currently protected but have the potential to deteriorate to a substandard rating. For commercial loans, the borrower’s financial performance may be inconsistent or below forecast, creating the possibility of liquidity problems and shrinking debt service coverage. In loans having this rating, the primary source of repayment is still good, but there is increasing reliance on collateral or guarantor support. Collectability of the loan is not yet in jeopardy. In particular, loans in this category are considered more variable than other categories, since they will typically migrate through categories more quickly. Substandard - Loans rated in this category are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. A substandard credit has a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. Substandard loans may be either still accruing or nonaccruing depending upon the severity of the risk and other factors such as the value of the collateral, if any, and past due status. Doubtful - Loans rated in this category indicate that collection or liquidation in full on the basis of currently existing facts, conditions, and values, is highly questionable and improbable. Loans in this category are usually on nonaccrual and classified as impaired. The following tables present the loan portfolio’s credit risk profile by internally assigned grade and class of receivable as of the dates indicated: September 30, 2018 By Loan Grade or Nonaccrual Status Pass Special Mention Accruing Classified (1) Nonaccrual Loans Total (In thousands) Commercial and industrial $ 548,827 $ 11,904 $ 20,515 $ 1,968 $ 583,214 Commercial tax-exempt 431,918 2,837 4,052 — 438,807 Commercial real estate 2,322,294 47,195 29,045 546 2,399,080 Construction and land 191,608 5,470 446 — 197,524 Residential 2,854,759 — 1,322 6,798 2,862,879 Home equity 90,617 — — 2,773 93,390 Consumer and other 145,514 — — 12 145,526 Total $ 6,585,537 $ 67,406 $ 55,380 $ 12,097 $ 6,720,420 December 31, 2017 By Loan Grade or Nonaccrual Status Pass Special Accruing Nonaccrual Total (In thousands) Commercial and industrial $ 496,395 $ 12,898 $ 10,951 $ 748 $ 520,992 Commercial tax-exempt 413,139 5,559 — — 418,698 Commercial real estate 2,346,833 56,947 34,455 1,985 2,440,220 Construction and land 146,514 11,770 6,596 110 164,990 Residential 2,672,714 — 1,349 8,470 2,682,533 Home equity 97,118 — — 2,840 99,958 Consumer and other 177,494 — 1 142 177,637 Total $ 6,350,207 $ 87,174 $ 53,352 $ 14,295 $ 6,505,028 ______________________ (1) Accruing Classified includes both Substandard and Doubtful classifications. The following tables present, by class of receivable, the balance of impaired loans with and without a related allowance, the associated allowance for those impaired loans with a related allowance, and the total unpaid principal on impaired loans: As of and for the three and nine months ended September 30, 2018 Recorded Investment (1) Unpaid Principal Balance Related Allowance QTD Average Recorded Investment YTD Average Recorded Investment QTD Interest Income Recognized while Impaired YTD Interest Income Recognized while Impaired (In thousands) With no related allowance recorded: Commercial and industrial $ 1,150 $ 2,083 n/a $ 1,617 $ 1,730 $ 33 $ 55 Commercial tax-exempt — — n/a — — — — Commercial real estate 1,625 2,966 n/a 2,526 2,439 583 633 Construction and land — — n/a — 66 — 16 Residential 7,097 7,457 n/a 10,102 10,002 146 335 Home equity — — n/a — 1,056 — 24 Consumer and other — — n/a — — — — Subtotal 9,872 12,506 n/a 14,245 15,293 762 1,063 With an allowance recorded: Commercial and industrial 1,635 1,638 $ 577 625 322 4 6 Commercial tax-exempt — — — — — — — Commercial real estate — — — 4,045 5,314 476 704 Construction and land — — — — — — — Residential 682 681 74 734 787 5 17 Home equity 1,769 1,769 596 1,769 729 1 1 Consumer and other — — — — 13 — 3 Subtotal 4,086 4,088 1,247 7,173 7,165 486 731 Total: Commercial and industrial 2,785 3,721 577 2,242 2,052 37 61 Commercial tax-exempt — — — — — — — Commercial real estate 1,625 2,966 — 6,571 7,753 1,059 1,337 Construction and land — — — — 66 — 16 Residential 7,779 8,138 74 10,836 10,789 151 352 Home equity 1,769 1,769 596 1,769 1,785 1 25 Consumer and other — — — — 13 — 3 Total $ 13,958 $ 16,594 $ 1,247 $ 21,418 $ 22,458 $ 1,248 $ 1,794 _____________________ (1) Recorded investment represents the client loan balance net of historical charge-offs and historical nonaccrual interest paid, if applicable, which was applied to principal. As of and for the three and nine months ended September 30, 2017 Recorded Investment (1) Unpaid Principal Balance Related Allowance QTD Average Recorded Investment YTD Average Recorded Investment QTD Interest Income Recognized while Impaired YTD Interest Income Recognized while Impaired (In thousands) With no related allowance recorded: Commercial and industrial $ 1,371 $ 1,988 n/a $ 1,626 $ 1,665 $ 18 $ 43 Commercial tax-exempt — — n/a — 1,301 — 80 Commercial real estate 2,463 5,972 n/a 2,690 3,465 107 1,077 Construction and land 207 241 n/a 218 191 — — Residential 8,859 9,231 n/a 9,069 8,938 98 277 Home equity — — n/a — — — — Consumer and other — — n/a — — — — Subtotal 12,900 17,432 n/a 13,603 15,560 223 1,477 With an allowance recorded: Commercial and industrial 598 598 $ 242 149 60 1 1 Commercial tax-exempt — — — — — — — Commercial real estate 6,911 7,341 415 6,955 7,012 76 247 Construction and land — — — — — — — Residential 1,200 1,200 127 2,175 2,938 18 80 Home equity 36 36 21 36 37 — 1 Consumer and other — — — — — — — Subtotal 8,745 9,175 805 9,315 10,047 95 329 Total: Commercial and industrial 1,969 2,586 242 1,775 1,725 19 44 Commercial tax-exempt — — — — 1,301 — 80 Commercial real estate 9,374 13,313 415 9,645 10,477 183 1,324 Construction and land 207 241 — 218 191 — — Residential 10,059 10,431 127 11,244 11,876 116 357 Home equity 36 36 21 36 37 — 1 Consumer and other — — — — — — — Total $ 21,645 $ 26,607 $ 805 $ 22,918 $ 25,607 $ 318 $ 1,806 _____________________ (1) Recorded investment represents the client loan balance net of historical charge-offs and historical nonaccrual interest paid, if applicable, which was applied to principal. As of and for the year ended December 31, 2017 Recorded Investment (1) Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized while Impaired (In thousands) With no related allowance recorded: Commercial and industrial $ 1,434 $ 2,238 n/a $ 1,594 $ 50 Commercial tax-exempt — — n/a 1,001 80 Commercial real estate 1,832 3,453 n/a 3,098 1,546 Construction and land 109 109 n/a 172 — Residential 9,337 9,709 n/a 9,033 360 Home equity 1,779 1,779 n/a 413 — Consumer and other — — n/a — — Subtotal 14,491 17,288 n/a 15,311 2,036 With an allowance recorded: Commercial and industrial 242 242 $ 58 156 4 Commercial tax-exempt — — — — — Commercial real estate 6,855 7,284 362 6,980 322 Construction and land — — — — — Residential 828 828 89 2,469 89 Home equity 36 36 20 36 1 Consumer and other 125 250 125 10 — Subtotal 8,086 8,640 654 9,651 416 Total: Commercial and industrial 1,676 2,480 58 1,750 54 Commercial tax-exempt — — — 1,001 80 Commercial real estate 8,687 10,737 362 10,078 1,868 Construction and land 109 109 — 172 — Residential 10,165 10,537 89 11,502 449 Home equity 1,815 1,815 20 449 1 Consumer and other 125 250 125 10 — Total $ 22,577 $ 25,928 $ 654 $ 24,962 $ 2,452 _____________________ (1) Recorded investment represents the client loan balance net of historical charge-offs and historical nonaccrual interest paid, if applicable, which was applied to principal. When management determines that it is probable that the Bank will not collect all principal and interest on a loan in accordance with the original loan terms, the loan is designated as impaired. Loans that are designated as impaired require an analysis to determine the amount of impairment, if any. Impairment would be indicated as a result of the carrying value of the loan exceeding either the estimated collateral value, less costs to sell, for collateral dependent loans or the net present value of the projected cash flow, discounted at the loan’s contractual effective interest rate, for loans not considered to be collateral dependent. Generally, shortfalls in the analysis on collateral dependent loans would result in the impairment amount being charged-off to the allowance for loan losses. Shortfalls on cash flow dependent loans may be carried as specific allocations to the general reserve unless a known loss is determined to have occurred, in which case such known loss is charged-off. Loans in the held for sale category are carried at the lower of amortized cost or estimated fair value in the aggregate and are excluded from the allowance for loan losses analysis. As of September 30, 2018, the Bank has pledged $2.6 billion of loans in a blanket lien agreement with the Federal Home Loan Bank. The Bank also has $570.1 million of loans pledged as collateral at the Federal Reserve Bank for access to their discount window. As of December 31, 2017, the Bank had pledged $2.5 billion of loans to the FHLB and $572.1 million of loans at the FRB. The Bank may, under certain circumstances, restructure loans as a concession to borrowers who are experiencing financial difficulty. Such loans are classified as TDRs and are included in impaired loans. TDRs typically result from the Bank’s loss mitigation activities which, among other things, could include rate reductions, payment extensions, and/or principal forgiveness. As of September 30, 2018 and December 31, 2017 , TDRs totaled $8.2 million and $13.6 million , respectively. As of September 30, 2018 , $5.2 million of the $8.2 million in TDRs were on accrual status. As of December 31, 2017 , $11.1 million of the $13.6 million in TDRs were on accrual status. Since all TDR loans are considered impaired loans, they are individually evaluated for impairment. The resulting impairment, if any, would have an impact on the allowance for loan losses as a specific reserve or charge-off. If, prior to the classification as a TDR, the loan was not impaired, there would have been a general or allocated reserve on the particular loan. Therefore, depending upon the result of the impairment analysis, there could be an increase or decrease in the related allowance for loan losses. Many loans initially categorized as TDRs are already on nonaccrual status and are already considered impaired. Therefore, there is generally not a material change to the allowance for loan losses when a nonaccruing loan is categorized as a TDR. As of and for the three months ended September 30, 2018 Restructured Current Quarter TDRs that defaulted in the Current Quarter that were restructured in prior twelve months # of Loans Pre- modification recorded investment Post- modification recorded investment # of Loans Post- modification recorded investment (In thousands, except number of loans) Commercial and industrial — $ — $ — — $ — Commercial tax exempt — — — — — Commercial real estate — — — — — Construction and land — — — — — Residential (1) 1 2,072 2,107 — — Home equity — — — — — Consumer and other — — — — — Total 1 $ 2,072 $ 2,107 — $ — As of and for the nine months ended September 30, 2018 Restructured Current Quarter TDRs that defaulted in the Current Quarter that were restructured in prior twelve months # of Loans Pre- modification recorded investment Post- modification recorded investment # of Loans Post- modification recorded investment (In thousands, except number of loans) Commercial and industrial (2) 1 $ 100 $ 100 — $ — Commercial tax exempt — — — — — Commercial real estate — — — — — Construction and land — — — — — Residential (1) 1 2,072 2,107 — — Home equity — — — — — Consumer and other — — — — — Total 2 $ 2,172 $ 2,207 — $ — As of and for the three and nine months ended September 30, 2017 Restructured in the current quarter and year to date TDRs that defaulted # of Loans Pre- modification recorded investment Post- modification recorded investment # of Loans Post- modification recorded investment (In thousands, except number of loans) Commercial and industrial — $ — $ — — $ — Commercial tax exempt — — — — — Commercial real estate — — — — — Construction and land — — — — — Residential (1) 1 108 109 — — Home equity — — — — — Consumer and other — — — — — Total 1 $ 108 $ 109 — $ — ______________________ (1) Represents the following type of concession: temporary reduction of interest rate. (2) Represents the following type of concession: extension of term. Loan participations serviced for others and loans serviced for others are not included in the Company’s total loans. The following table presents a summary of the loan participations serviced for others and loans serviced for others based on class of receivable as of the dates indicated: September 30, 2018 December 31, 2017 (In thousands) Commercial and industrial $ 8,085 $ 8,484 Commercial tax-exempt 19,242 19,805 Commercial real estate 49,005 49,783 Construction and land 33,425 37,840 Total loan participations serviced for others $ 109,757 $ 115,912 Residential $ 36,634 $ 41,440 Total loans serviced for others $ 36,634 $ 41,440 Total loans include deferred loan origination (fees)/ costs, net, of $7.6 million and $6.9 million as of September 30, 2018 and December 31, 2017 , respectively.

Allowance for Loan Losses

Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2018
Allowance for Loan Losses [Abstract]
Allowance for Credit Losses [Text Block]	Allowance for Loan Losses The allowance for loan losses is reported as a reduction of outstanding loan balances, and totaled $73.5 million and $74.7 million at September 30, 2018 and December 31, 2017 , respectively. The following table presents a summary of the changes in the allowance for loan losses for the periods indicated: As of and for the three months ended September 30, As of and for the nine months ended September 30, 2018 2017 2018 2017 (In thousands) Allowance for loan losses, beginning of period: Commercial and industrial $ 12,381 $ 11,672 $ 11,735 $ 12,751 Commercial real estate 45,183 48,136 46,820 50,412 Construction and land 4,613 3,585 4,949 3,039 Residential 9,804 10,282 9,773 10,449 Home equity 1,336 929 835 1,035 Consumer and other 147 405 630 391 Total allowance for loan losses, beginning of period 73,464 75,009 74,742 78,077 Loans charged-off: Commercial and industrial — — (339 ) (218 ) Commercial real estate — — (135 ) — Construction and land — — — — Residential — — (16 ) (58 ) Home equity — — — — Consumer and other — (38 ) (39 ) (283 ) Total charge-offs — (38 ) (529 ) (559 ) Recoveries on loans previously charged-off: Commercial and industrial 153 241 387 395 Commercial real estate 820 76 995 3,605 Construction and land — 13 — 13 Residential — — 27 47 Home equity — — 1 — Consumer and other 12 4 168 22 Total recoveries 985 334 1,578 4,082 Provision/ (credit) for loan losses: Commercial and industrial 1,921 973 2,672 (42 ) Commercial real estate (3,179 ) (1,173 ) (4,856 ) (6,978 ) Construction and land 172 182 (164 ) 728 Residential 144 (431 ) 164 (587 ) Home equity 6 (15 ) 506 (121 ) Consumer and other (13 ) 32 (613 ) 273 Total provision/(credit) for loan losses (949 ) (432 ) (2,291 ) (6,727 ) Allowance for loan losses at end of period: Commercial and industrial 14,455 12,886 14,455 12,886 Commercial real estate 42,824 47,039 42,824 47,039 Construction and land 4,785 3,780 4,785 3,780 Residential 9,948 9,851 9,948 9,851 Home equity 1,342 914 1,342 914 Consumer and other 146 403 146 403 Total allowance for loan losses at end of period $ 73,500 $ 74,873 $ 73,500 $ 74,873 The allowance for loan losses is an estimate of the inherent risk of loss in the loan portfolio as of the consolidated balance sheet dates. Management estimates the level of the allowance based on all relevant information available. Changes to the required level in the allowance result in either a provision for loan loss expense, if an increase is required, or a credit to the provision, if a decrease is required. Loan losses are charged to the allowance when available information confirms that specific loans, or portions thereof, are uncollectible. Recoveries on loans previously charged-off are credited to the allowance when received in cash. The provision/ (credit) for loan losses and related balance in the allowance for loan losses for tax-exempt commercial and industrial loans are included with commercial and industrial. The provision/ (credit) for loan losses and related balance in the allowance for loan losses for tax-exempt commercial real estate loans are included with commercial real estate. There were no charge-offs or recoveries, for any period presented, for both commercial and industrial and commercial real estate tax-exempt loans. The following tables present the Company’s allowance for loan losses and loan portfolio at September 30, 2018 and December 31, 2017 by portfolio segment, disaggregated by method of impairment analysis. The Company had no loans acquired with deteriorated credit quality at September 30, 2018 or December 31, 2017 . September 30, 2018 Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Recorded investment (loan balance) Allowance for loan losses Recorded investment (loan balance) Allowance for loan losses Recorded investment (loan balance) Allowance for loan losses (In thousands) Commercial and industrial $ 2,785 $ 577 $ 1,019,236 $ 13,878 $ 1,022,021 $ 14,455 Commercial real estate 1,625 — 2,397,455 42,824 2,399,080 42,824 Construction and land — — 197,524 4,785 197,524 4,785 Residential 7,779 74 2,855,100 9,874 2,862,879 9,948 Home equity 1,769 596 91,621 746 93,390 1,342 Consumer and other — — 145,526 146 145,526 146 Total $ 13,958 $ 1,247 $ 6,706,462 $ 72,253 $ 6,720,420 $ 73,500 December 31, 2017 Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Recorded investment (loan balance) Allowance for loan losses Recorded investment (loan balance) Allowance for loan losses Recorded investment (loan balance) Allowance for loan losses (In thousands) Commercial and industrial $ 1,676 $ 58 $ 938,014 $ 11,677 $ 939,690 $ 11,735 Commercial real estate 8,687 362 2,431,533 46,458 2,440,220 46,820 Construction and land 109 — 164,881 4,949 164,990 4,949 Residential 10,165 89 2,672,368 9,684 2,682,533 9,773 Home equity 1,815 20 98,143 815 99,958 835 Consumer and other 125 125 177,512 505 177,637 630 Total $ 22,577 $ 654 $ 6,482,451 $ 74,088 $ 6,505,028 $ 74,742

Derivatives and Hedging Activit

Derivatives and Hedging Activities	9 Months Ended
	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	Derivatives and Hedging Activities The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities and, to a lesser extent, the use of derivative financial instruments. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are generally determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to certain loans, deposits, and borrowings. As a service to its customers, the Company may utilize derivative instruments including customer foreign exchange forward contracts to manage its foreign exchange risk, if any. The following table presents the fair value of the Company’s derivative financial instruments as well as their classification on the consolidated balance sheets as of September 30, 2018 and December 31, 2017 : September 30, 2018 December 31, 2017 Asset derivatives Liability derivatives Asset derivatives Liability derivatives Balance sheet location Fair value (1) Balance sheet location Fair value (1) Balance sheet location Fair value (1) Balance sheet location Fair value (1) (In thousands) Derivatives designated as hedging instruments: Interest rate products Other assets $ 903 Other liabilities $ — Other assets $ 555 Other $ (80 ) Derivatives not designated as hedging instruments: Interest rate products Other assets 27,792 Other liabilities (28,209 ) Other assets 18,575 Other (18,953 ) Foreign exchange contracts Other assets — Other — Other assets 2 Other (2 ) Risk participation agreements Other assets 20 Other liabilities (90 ) Other assets 1 Other liabilities (108 ) Total $ 28,715 $ (28,299 ) $ 19,133 $ (19,143 ) _____________________ (1) For additional details, see Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 5: Fair Value Measurements.” The following tables present the effect of the Company’s derivative financial instruments on accumulated other comprehensive income for the three and nine months ended September 30, 2018 and 2017 : Derivatives in cash flow hedging relationships Amount of gain or (loss) recognized in OCI on derivatives (1) Location of (gain) or loss reclassified from accumulated OCI into income Amount of (gain) or loss reclassified from accumulated OCI into income Three months ended September 30, Three months ended September 30, 2018 2017 2018 2017 (In thousands) (In thousands) Interest rate products $ (193 ) $ 121 Interest expense $ (101 ) $ (293 ) Total $ (193 ) $ 121 $ (101 ) $ (293 ) ____________________ (1) There was an additional $(1) thousand loss related to the ineffective portion for the three months ended as of September 30, 2017 . Derivatives in cash Amount of gain or (loss) recognized in OCI on derivatives (1) Location of (gain) Amount of (gain) or loss reclassified from accumulated OCI into income Nine months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (In thousands) (In thousands) Interest rate products $ 818 $ (237 ) Interest expense $ (385 ) $ (953 ) Total $ 818 $ (237 ) $ (385 ) $ (953 ) ____________________ (1) There was an additional $(3) thousand loss related to the ineffective portion for the nine months ended as of September 30, 2017 . The guidance in ASU 2017-12 requires that amounts in accumulated other comprehensive income that are included in the assessment of effectiveness should be reclassified into earnings in the same period in which the hedged forecasted transactions impact earnings. Transition guidance for this ASU further states that upon adoption, previously recorded cumulative ineffectiveness for cash flow hedges existing at the adoption date be eliminated by means of a cumulative-effect adjustment to accumulated other comprehensive income with a corresponding adjustment to the opening balance of retained earnings as of the initial application date. There was a $5 thousand reclassification related to the adoption of ASU 2017-12 effective January 1, 2018. The following table presents the effect of the Company’s derivative financial instruments in the consolidated statements of operations for the three and nine months ended September 30, 2018 and 2017 : Location of (gain) or Amount of (gain) or Amount of (gain) or loss recognized in income on cash flow hedging relationships Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (In thousands) Total amounts of (income) and expense line items presented in the statement of operations in which the effects of fair value or cash flow hedges are recorded Interest expense $ (101 ) n/a $ (385 ) n/a The effects of cash flow hedging: (Gain) or loss on cash flow hedging relationships in ASC 815 Derivatives and Hedging, Subtopic 20 Hedging - general Interest contracts - amount of (gain) or loss reclassified from accumulated other comprehensive income into income Interest expense $ (101 ) n/a $ (385 ) n/a The Bank has agreements with its derivative counterparties that contain provisions where, if the Bank defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Bank could also be declared in default on its derivative obligations. The Bank was in compliance with these provisions as of September 30, 2018 and December 31, 2017 . The Bank also has agreements with certain of its derivative counterparties that contain provisions where, if the Bank fails to maintain its status as a well- or adequately-capitalized institution, then the counterparty could terminate the derivative positions and the Bank would be required to settle its obligations under the agreements. The Bank was in compliance with these provisions as of September 30, 2018 and December 31, 2017 . Certain of the Bank’s agreements with its derivative counterparties contain provisions where, if specified, events or conditions occur that materially change the Bank’s creditworthiness in an adverse manner, the Bank may be required to fully collateralize its obligations under the derivative instruments. The Bank was in compliance with these provisions as of September 30, 2018 and December 31, 2017 . As of September 30, 2018 there were no termination amounts related to collateral determinations of derivatives in a liability position and as of December 31, 2017 , the termination amount was $3.1 million . The Company has minimum collateral posting thresholds with its derivative counterparties and pledged securities with market values of $1.1 million and $2.3 million , respectively, as of September 30, 2018 and December 31, 2017 , against its obligations under these agreements. The collateral posted is typically greater than the current liability position; however, due to timing of liability position changes at period end, the funding of a collateral shortfall may take place shortly following period end. Cash Flow Hedges of Interest Rate Risk The Company’s objectives in using interest rate derivatives are to add stability to interest income and expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company has entered into interest rate swaps as part of its interest rate risk management strategy. These interest rate swaps are designated as cash flow hedges and involve the receipt of variable rate amounts from a counterparty in exchange for the Company making fixed payments. The Company has entered into interest rate swaps to hedge London Interbank Offered Rate (“LIBOR”) -indexed brokered deposits and the LIBOR component of the total cost of certain FHLB borrowings. To accomplish this objective and strategy, the Bank has entered into a total of five interest rate swaps, two during 2017 with effective dates of March 22, 2017 and three during 2013 with effective dates of August 1, 2013, June 1, 2014, and March 1, 2014. The two interest rate swaps entered into during 2017 have notional amounts of $40 million and $60 million with terms of 1.75 and 2.25 years, respectively. These interest rate swaps will effectively fix the Bank’s interest payments on $100 million in interest-related cash outflows attributable to changes in the LIBOR component of FHLB borrowing liabilities at rates of 1.55% and 1.65%, respectively, with a weighted average rate of 1.61%. The borrowings hedged will initially be expected to be issuances and quarterly rollovers of three-month FHLB advances but may also then include future issuances of three-month repurchase agreements with similar characteristics and/or future issuances of either floating or fixed rate borrowings that are issued with the specific intent to replace the quarterly rollovers of the advances or repurchase agreements. The three interest rate swaps entered into during 2013 each have a notional amount of $25 million and have terms ranging from five to six years from their respective effective dates. The interest rate swaps effectively fix the Bank’s interest payments on $75 million of its LIBOR-indexed deposit liabilities at rates between 1.68% and 2.03%, with a weighted average rate of 1.82%. Prior to the implementation of ASU 2017-12, which was implemented on a modified retrospective basis on January 1, 2018, the Company used the “Hypothetical Derivative Method” described in ASC 815, Derivatives and Hedging (“ASC 815”), for quarterly prospective and retrospective assessments of hedge effectiveness, as well as for measurements of hedge ineffectiveness. Under this method, the Company assessed the effectiveness of each hedging relationship by comparing the changes in cash flows of the derivative hedging instrument with the changes in cash flows of the designated hedged transactions. The effective portion of changes in the fair value of the derivative was initially reported in other comprehensive income (“OCI”) (outside of earnings) and subsequently reclassified to earnings in interest and dividend income when the hedged transactions affect earnings. Ineffectiveness resulting from the hedge was recorded as a gain or loss in the consolidated statement of operations as part of fees and other income. Upon implementation of ASU 2017-12, for derivatives designated and that qualify as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in accumulated other comprehensive income and subsequently reclassified into interest expense in the same period during which the hedged transaction affects earnings. A portion of the balance reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are made or received on the Company’s interest rate swaps. During the next twelve months, the Company estimates that $0.9 million will be reclassified as a decrease in interest expense. The Company monitors the risk of counterparty default on an ongoing basis. Non-designated Hedges Derivatives not designated as hedges are not speculative and result from different services the Bank provides to qualified commercial clients. The Bank offers certain derivative products directly to such clients. The Bank economically hedges derivative transactions executed with commercial clients by entering into mirror-image, offsetting derivatives with third parties. Derivative transactions executed as part of these programs are not designated in ASC 815-qualifying hedging relationships and are, therefore, marked-to-market through earnings each period. Because the derivatives have mirror-image contractual terms, the changes in fair value substantially offset through earnings. The net effect on earnings is primarily driven by changes in the credit valuation adjustment (“CVA”). The CVA represents the dollar amount of fair value adjustment related to nonperformance risk of both the Bank and its counterparties. Fees earned in connection with the execution of derivatives related to this program are recognized in the consolidated statement of operations in other income. As of September 30, 2018 and December 31, 2017 , the Bank had 156 and 142 derivatives, respectively, related to this program, comprised of interest rate swaps and caps, with an aggregate notional amount of $1.2 billion as of September 30, 2018 and $1.1 billion as of December 31, 2017. As of September 30, 2018 , there were no foreign currency exchange contracts outstanding related to this program, and as of December 31, 2017 , there were three foreign currency exchange contracts with an aggregate notional amount of $0.2 million . In addition, as a participant lender, the Bank has guaranteed performance on the pro-rated portion of swaps executed by other financial institutions. As the participant lender, the Bank is providing a partial guarantee, but is not a direct party to the related swap transactions. The Bank has no obligations under the risk participation agreements unless the borrower defaults on their swap transaction with the lead bank and the swap is in a liability position to the borrower. In that instance, the Bank has agreed to pay the lead bank a portion of the swap’s termination value at the time of the default. The derivative transactions entered into as part of these agreements are not designated, as per ASC 815, as qualifying hedging relationships and are, therefore, marked-to-market through earnings each period. As of September 30, 2018 , there were seven of these risk participation transactions with an aggregate notional amount of $60.0 million and, as of December 31, 2017 , there were six of these risk participation transactions with an aggregate notional amount of $48.0 million . The Bank has also participated out to other financial institutions a pro-rated portion of swaps executed by the Bank. The other financial institution has no obligations under the risk participation agreements unless the borrowers default on their swap transactions with the Bank and the swaps are in liability positions to the borrower. In those instances, the other financial institution has agreed to pay the Bank a portion of the swap’s termination value at the time of the default. The derivative transactions entered into as part of these agreements are not designated, as per ASC 815, as qualifying hedging relationships and are, therefore, marked-to-market through earnings each period. As of September 30, 2018 , there were three of these risk participation transactions with a pro-rated notional amount of $11.5 million and, as of December 31, 2017 , there were two of these risk participation transactions with a pro-rated notional amount of $6.1 million . The following table presents the effect of the Bank’s derivative financial instruments not designated as hedging instruments in the consolidated statement of operations for the three and nine months ended September 30, 2018 and 2017 . Amount of gain or (loss), net, recognized in income on derivatives Derivatives not designated as hedging instruments Location of gain or (loss) recognized in income on derivatives Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (In thousands) Interest rate products Other income/ (expense) $ 8 $ (49 ) $ (39 ) $ (695 ) Risk participation agreements Other income/ (expense) 18 5 238 325 Total $ 26 $ (44 ) $ 199 $ (370 )

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	Income Taxes The following table presents the components of income tax expense for continuing operations, discontinued operations, noncontrolling interests and the Company: Nine months ended September 30, 2018 2017 (In thousands) Income from continuing operations: Income before income taxes $ 77,214 $ 82,985 Income tax expense 28,886 24,805 Net income from continuing operations $ 48,328 $ 58,180 Effective tax rate, continuing operations 37.4 % 29.9 % Income from discontinued operations: Income before income taxes $ 2,388 $ 6,631 Income tax expense 692 2,750 Net income from discontinued operations $ 1,696 $ 3,881 Effective tax rate, discontinued operations 29.0 % 41.5 % Less: Income attributable to noncontrolling interests: Income before income taxes $ 2,942 $ 3,190 Income tax expense — — Net income attributable to noncontrolling interests $ 2,942 $ 3,190 Effective tax rate, noncontrolling interests — % — % Income attributable to the Company Income before income taxes $ 76,660 $ 86,426 Income tax expense 29,578 27,555 Net income attributable to the Company $ 47,082 $ 58,871 Effective tax rate attributable to the Company 38.6 % 31.9 % The effective tax rate for continuing operations for the nine months ended September 30, 2018 of 37.4% , with related tax expense of $28.9 million , was calculated based on a projected 2018 annual effective tax rate. The effective tax rate was more than the statutory rate of 21% due primarily to the sale of Anchor and state and local income taxes. These items were partially offset by earnings from tax-exempt investments and income tax credits. The Company recorded tax expense of $12.7 million on the sale of Anchor in April 2018, which was primarily due to a book to tax basis difference associated with nondeductible goodwill. On August 21, 2018, the Internal Revenue Service (the “IRS”) issued guidance (Notice 2018-68) on new rules regarding restrictions on public company deductions for executive compensation under Section 162(m). The IRS guidance involved the interpretation of the transition rule for written binding contracts that were in effect on November 2, 2017 as amended by the Tax Cuts and Jobs Act (the “Tax Act”) that was enacted on December 22, 2017. Based on the updated guidance, the Company recorded an additional tax expense of $0.4 million in the third quarter of 2018 to comply with the guidance. The effective tax rate for continuing operations for the nine months ended September 30, 2017 of 29.9% , with related tax expense of $24.8 million , was calculated based on a projected 2017 annual effective tax rate. The effective tax rate was less than the statutory rate of 35% due primarily to earnings from tax-exempt investments, income tax credits, and income attributable to noncontrolling interests. These items were partially offset by state and local income taxes. The effective tax rate for continuing operations for the nine months ended September 30, 2018 was more than the effective tax rate for the same period in 2017 due primarily to the sale of Anchor. This item was partially offset by the reduction in the federal corporate tax rate from 35% to 21% as a result of the Tax Act.

Noncontrolling Interests

Noncontrolling Interests	9 Months Ended
	Sep. 30, 2018
Noncontrolling Interest [Abstract]
Noncontrolling Interest Disclosure [Text Block]	Noncontrolling Interests At the Company, noncontrolling interests consist of equity owned by management of the Company’s respective majority-owned affiliates, Anchor, BOS, and DGHM, for the periods in which the Company had an ownership interest in them. Net income attributable to noncontrolling interests in the consolidated statements of operations represents the net income allocated to the noncontrolling interest owners of the affiliates. Net income allocated to the noncontrolling interest owners was $0.9 million and $1.1 million for the three-month periods ended September 30, 2018 and 2017 , respectively, and $2.9 million and $3.2 million for the nine-month periods ended September 30, 2018 and 2017 , respectively. On the consolidated balance sheets, noncontrolling interests are included as the sum of the capital and undistributed profits allocated to the noncontrolling interest owners. Typically, this balance is included in a company’s permanent shareholders’ equity in the consolidated balance sheets. When the noncontrolling interest owners’ rights include certain redemption features, as described in ASC 480, Distinguishing Liabilities from Equity , such redeemable noncontrolling interests are classified as mezzanine equity and are not included in permanent shareholders’ equity. Due to the redemption features of the noncontrolling interests, the Company had redeemable noncontrolling interests held in mezzanine equity in the accompanying consolidated balance sheets of $11.7 million and $17.5 million at September 30, 2018 and December 31, 2017 , respectively. The aggregate amount of such redeemable noncontrolling equity interests are recorded at the estimated maximum redemption values. In addition, the Company had $2.2 million and $5.2 million in noncontrolling interests included in permanent shareholder’s equity at September 30, 2018 and December 31, 2017 , respectively. Each non-wholly owned affiliate operating agreement provides the Company and/or the noncontrolling interests with contingent call or put redemption features used for the orderly transfer of noncontrolling equity interests between the affiliate noncontrolling interest owners and the Company at either a contractually predetermined fair value; multiple of earnings before interest, taxes, depreciation, and amortization (“EBITDA”); or fair value. The Company may liquidate these noncontrolling interests in cash, shares of the Company’s common stock, or other forms of consideration dependent on the operating agreement. These agreements are discussed in Part II. Item 8. “Financial Statements and Supplementary Data - Note 14: Noncontrolling Interests” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . Generally, these put and call redemption features refer to shareholder rights of both the Company and the noncontrolling interest owners of the Company’s majority-owned affiliate companies. The affiliate company noncontrolling interests generally take the form of limited liability company (“LLC”) units, profits interests, or common stock (collectively, the “noncontrolling equity interests”). In most circumstances, the put and call redemption features generally relate to the Company’s right and, in some cases, obligation to purchase and the noncontrolling equity interests’ right to sell their equity interests. There are various events that could cause the puts or calls to be exercised, such as a change in control, death, disability, retirement, resignation or termination. The puts and calls are generally to be exercised at the then fair value or a contractually agreed upon approximation thereof. The terms of these rights vary and are governed by the respective individual operating and legal documents. The following table presents, by affiliate, the noncontrolling interests included as redeemable noncontrolling interests and noncontrolling interests in mezzanine and permanent equity, respectively, at the periods indicated: September 30, 2018 December 31, 2017 (In thousands) Anchor (1) $ — $ 9,761 BOS 8,675 8,057 DGHM (2) 5,220 4,829 Total $ 13,895 $ 22,647 Redeemable noncontrolling interests $ 11,686 $ 17,461 Noncontrolling interests $ 2,209 $ 5,186 _____________________ (1) Assets and liabilities at Anchor were classified as held for sale on the Company’s consolidated balance sheets at December 31, 2017. The Company completed the sale of Anchor in April 2018. (2) Only includes redeemable noncontrolling interests. The following tables present a rollforward of the Company’s redeemable noncontrolling interests and noncontrolling interests for the periods indicated: Three months ended Nine months ended September 30, 2018 September 30, 2018 Redeemable noncontrolling interests Noncontrolling interests Redeemable noncontrolling interests Noncontrolling interests (In thousands) Noncontrolling interests at beginning of period $ 10,747 $ 1,996 $ 17,461 $ 5,186 Net income attributable to noncontrolling interests 711 213 2,202 740 Distributions (687 ) (203 ) (2,136 ) (712 ) Purchases/ (sales) of ownership interests — — (6,353 ) (3,051 ) Amortization of equity compensation 125 — 373 161 Adjustments to fair value 790 203 139 (115 ) Noncontrolling interests at end of period $ 11,686 $ 2,209 $ 11,686 $ 2,209 Three months ended Nine months ended September 30, 2017 September 30, 2017 Redeemable noncontrolling interests Noncontrolling interests Redeemable noncontrolling interests Noncontrolling interests (In thousands) Noncontrolling interests at beginning of period $ 17,216 $ 4,375 $ 16,972 $ 4,161 Net income attributable to noncontrolling interests 802 272 2,385 805 Distributions (869 ) (264 ) (2,414 ) (783 ) Purchases/ (sales) of ownership interests 103 85 235 85 Amortization of equity compensation 102 250 306 756 Adjustments to fair value (1,472 ) 74 (1,602 ) (232 ) Noncontrolling interests at end of period $ 15,882 $ 4,792 $ 15,882 $ 4,792

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Notes)	9 Months Ended
	Sep. 30, 2018
Accumulated Other Comprehensive Income [Abstract]
Comprehensive Income (Loss) Note [Text Block]	Accumulated Other Comprehensive Income The following table presents a summary of the amounts reclassified from accumulated other comprehensive income/ (loss) for the three and nine months ended September 30, 2018 and 2017 : Description of component of accumulated other comprehensive income/ (loss) Three months ended September 30, Nine months ended September 30, Affected line item in Statement of Operations 2018 2017 2018 2017 (In thousands) (In thousands) Adjustment for realized (gains)/ losses on available-for-sale securities, net: Pre-tax $ — $ (230 ) $ — $ (486 ) (Gain)/ loss on sale of investments, net Tax expense/ (benefit) — 89 — 193 Income tax expense/ (benefit) Net $ — $ (141 ) $ — $ (293 ) Net (income)/ loss attributable to the Company Net realized (gain)/ loss on cash flow hedges: Hedges related to deposits and borrowings: Pre-tax $ (101 ) $ 293 $ (385 ) $ 953 Interest (income)/ expense on deposits and borrowings Pre-tax — 2 — 3 Other (income)/ expense Tax expense/ (benefit) 29 (123 ) 112 (398 ) Income tax expense/ (benefit) Net $ (72 ) $ 172 $ (273 ) $ 558 Net (income)/ loss attributable to the Company Total reclassifications for the period, net of tax $ (72 ) $ 31 $ (273 ) $ 265 On January 1, 2018, the Company elected to early adopt ASU No. 2017-12. As a result, the Company reclassified unrealized losses on cash flow hedges of $5 thousand from accumulated other comprehensive income/ (loss) to beginning retained earnings. On January 1, 2018, the Company adopted ASU No. 2016-01. As a result, the Company reclassified unrealized gains on equity securities available-for-sale, net of tax, of $339 thousand from accumulated other comprehensive income/ (loss) to beginning retained earnings. Components of accumulated other comprehensive income/ (loss) Unrealized gain/ (loss) on securities available-for-sale Unrealized gain/ (loss) on cash flow hedges Unrealized gain/ (loss) on other Accumulated other comprehensive income/ (loss) (In thousands) Balance at December 31, 2016 $ (11,194 ) $ (605 ) $ (749 ) $ (12,548 ) Other comprehensive income/ (loss) before reclassifications 7,588 (140 ) 12 7,460 Amounts reclassified from other comprehensive income/ (loss) (293 ) 558 — 265 Other comprehensive income/ (loss), net 7,295 418 12 7,725 Balance at September 30, 2017 $ (3,899 ) $ (187 ) $ (737 ) $ (4,823 ) Balance at December 31, 2017 $ (8,140 ) $ 332 $ (850 ) $ (8,658 ) Other comprehensive income/ (loss) before reclassifications (18,888 ) 574 1 (18,313 ) Amounts reclassified from other comprehensive income/ (loss) — (273 ) — (273 ) Other comprehensive income/ (loss), net (18,888 ) 301 1 (18,586 ) Reclassification due to the adoption of ASUs 2017-12 and 2016-01 (339 ) 5 — (334 ) Balance at September 30, 2018 $ (27,367 ) $ 638 $ (849 ) $ (27,578 )

Restructuring

Restructuring	9 Months Ended
	Sep. 30, 2018
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities Disclosure [Text Block]	Restructuring In the fourth quarter of 2014, the Company incurred restructuring charges related to the acquisition of Banyan Partners, LLC. The purpose of this restructuring was to realign the management structure within the Wealth Management and Trust segment. The total cost of the restructuring incurred in Q4 2014 was $0.7 million . In 2015, the Company incurred additional restructuring charges to further refine the management structure within the Wealth Management and Trust segment. The total cost of the restructuring charges in 2015 was $3.7 million . In the first and second quarters of 2016, the Company incurred additional costs of $1.1 million and $0.9 million , respectively, in continued refinement of the management structure within the Wealth Management and Trust segment. The Company does not anticipate any additional restructuring costs related to this plan as of the date of this filing. Restructuring expenses incurred since the plan of restructuring was first implemented in 2014 totaled $6.4 million , all within the Wealth Management and Trust segment. In the third quarter of 2018, the Company incurred a restructuring charge of $5.8 million , in connection with a previously announced reduction in force to the Company’s workforce of approximately 7% of total staffing. The restructuring is intended to improve the Company’s operating efficiency and enhance earnings. Additional restructuring costs may be recognized in the fourth quarter of 2018. The following table presents a summary of the restructuring activity for the three and nine months ended September 30, 2018 and 2017 : Total (1) (In thousands) Accrued charges at December 31, 2017 $ 337 Costs paid (254 ) Accrued charges at March 31, 2018 83 Costs paid (83 ) Accrued charges at June 30, 2018 — Costs incurred 5,763 Costs paid — Accrued charges at September 30, 2018 $ 5,763 Accrued charges at December 31, 2016 $ 1,977 Costs paid (618 ) Accrued charges at March 31, 2017 1,359 Costs paid (335 ) Accrued charges at June 30, 2017 1,024 Costs paid (410 ) Accrued charges at September 30, 2017 $ 614 _____________________ (1) Restructuring charges consist solely of severance costs for all periods presented.

Revenue Recognition (Notes)

Revenue Recognition (Notes)	9 Months Ended
	Sep. 30, 2018
Revenue Recognition [Abstract]
Revenue Recognition, Deferred Revenue [Policy Text Block]	Revenue Recognition On January 1, 2018, the Company adopted ASU 2014-09 et al . As stated in Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 1: Basis of Presentation and Summary of Significant Accounting Policies,” the implementation of the new standard did not have a material impact on the measurement or recognition of revenue; as such, a cumulative effect adjustment to opening retained earnings was not deemed necessary. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606, Revenue from Contracts with Customers (“ASC 606”), while prior period amounts were not adjusted and continue to be reported in accordance with our historic accounting under ASC 605, Revenue Recognition . ASC 606 does not apply to revenue associated with financial instruments, including interest income on loans and investment securities. In addition, certain noninterest income such as fees associated with mortgage servicing rights, late fees, BOLI income, and derivatives are also not in scope of the new guidance. ASC 606 is applicable to noninterest income such as investment management fees, wealth advisory fees, wealth management and trust fees, and certain banking fees. However, the recognition of this revenue did not change upon adoption of ASC 606. Substantially all of the Company’s revenue is generated from contracts with customers. Noninterest income considered in-scope of ASC 606 is discussed below. Investment management fees Investment management fees are earned for the management of a series of accounts and funds in which clients invest directly, acting as a sub-advisor to larger investment management companies, or private client account management. The Company’s performance obligation is satisfied over time and the resulting fees are recognized monthly, based upon either the beginning-of quarter (in advance) or quarter-end (in arrears) market value of the assets under management and advisory (“AUM”) and the applicable fee rate, depending on the terms of the contract. Payment is generally received a few days after month end through a direct charge to customers’ accounts. The Company may earn performance-based incentives on certain contracts. Receivables are recorded on the consolidated balance sheet in the fees receivable line item. All of the investment management fee income on the consolidated statement of operations for the three and nine months ended September 30, 2018 and 2017 is considered in-scope of ASC 606. Wealth advisory fees Wealth advisory fees are earned for providing financial advisory services to clients. The Company’s performance obligation under these contracts is satisfied over time as the financial advisory services are provided. Fees are recognized monthly based either on a fixed fee amount or are based on the quarter-end (in arrears) market value of the AUM and the applicable fee rate (“asset based fees”), depending on the terms of the contract. Payment on fixed fee contracts is received based on a schedule outlined in the contract, while payment on asset based fees are generally received a few days after quarter end through a direct charge to customers’ accounts. No performance based incentives are earned on wealth advisory contracts. Receivables are recorded on the consolidated balance sheet in the fees receivable line item. Deferred revenues related to the fixed fee contracts of $6.9 million and $6.6 million at September 30, 2018 and December 31, 2017 , respectively, are recorded on the consolidated balance sheet within the other liabilities line item. All of the wealth advisory fee income on the consolidated statement of operations for the three and nine months ended September 30, 2018 and 2017 is considered in-scope of ASC 606. Wealth management and trust fees Wealth management and trust fees are earned for providing investment management, wealth management, retirement plan advisory, family office, financial planning, and trust services to clients. The Company’s performance obligation under these contracts is satisfied over time as the wealth management services are provided. Fees are recognized monthly based on the average monthly, beginning-of-quarter, or, for a small number of clients, end-of-quarter market value of the AUM and the applicable fee rate, depending on the terms of the contract. No performance based incentives are earned on wealth management contracts. Receivables are recorded on the consolidated balance sheet in the fees receivable line item. Trust fees are earned when the Company is appointed as trustee for clients. As trustee, the Company administers the client’s trust and manages the assets of the trust including investments and property. The Company’s performance obligation under these agreements is satisfied over time as the administration and management services are provided. Fees are recognized monthly or, in certain circumstances, quarterly based on a percentage of the market value of the account as outlined in the agreement. Payment frequency is defined in the individual contracts which primarily stipulate monthly in arrears. No performance based incentives are earned on trust fee contracts. Receivables are recorded on the consolidated balance sheet in the fees receivable line item. All of the wealth management and trust fee income on the consolidated statement of operations for the three and nine months ended September 30, 2018 and 2017 is considered in-scope of ASC 606. Other banking fee income The Bank charges a variety of fees to its clients for services provided on the deposit and deposit management related accounts. Each fee is either transaction-based or assessed monthly. The types of fees include service charges on accounts, overdraft fees, maintenance fees, ATM fee charges, credit card charges, and other miscellaneous charges related to the accounts. These fees are not governed by individual contracts with clients. They are charges to clients based on disclosures presented to clients upon opening these accounts along with updated disclosures when changes are made to the fee structures. The transaction-based fees are recognized in revenue when charged to the client based on specific activity on the client’s account. Monthly service/maintenance charges are recognized in the month they are earned and are charged directly to the client’s account. The Bank also charges fees for treasury activities such as foreign exchange fees for clients with a banking relationship. These fees are recorded when earned via completion of the transaction for the client. The completion of the transaction is deemed to be the performance obligation of the transaction. The related revenue is recorded through a direct charge to the client’s account. There are no individual agreements or contracts with clients as it relates to foreign exchange fees as they are governed by client disclosure statements and the Bank’s internal policies and procedures. For the three months ended September 30, 2018 and 2017 , $1.1 million and $0.9 million , respectively, of other banking fee income as described above is considered in-scope for ASC 606. For the nine months ended September 30, 2018 and 2017 , $3.1 million and $2.7 million , respectively, of other banking fee income as described above is considered in-scope for ASC 606.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	Recent Accounting Pronouncements In May 2014 and at various other dates after May 2014, the FASB issued ASU 2014-09 et al. Under the new standard, a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration which the company expects to receive in exchange for those goods or services. ASU 2014-09 et al . does not apply to revenue associated with financial instruments such as loans and securities. On January 1, 2018, the Company adopted ASU 2014-09 et al. using the modified retrospective transition method, however no cumulative effect adjustment to opening retained earnings as of January 1, 2018 was required. For additional disclosure details, see Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 1: Basis of Presentation and Summary of Significant Accounting Policies and Note 13: Revenue Recognition.” In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Instruments - Going Concern (“ASU 2014-15”). ASU 2014-15 requires management to evaluate an entity’s ability to continue as a going concern within one year after the date that the financial statements are issued. Management must evaluate whether conditions and events raise substantial doubt about an entity’s ability to continue as a going concern and then whether its plans alleviate that doubt. ASU 2014-15 was effective in 2016 and management performs the required evaluation quarterly and has concluded that there are no such conditions or events that raise substantial doubt about the Company’s ability to continue as a going concern. In January 2016, the FASB issued ASU 2016-01. This ASU requires equity investments to be measured at fair value with changes in fair value, net of tax, recognized in net income. As a result of implementing this standard, the Company reclassified $339 thousand in unrealized gains on available-for-sale equity investments, net of tax, from accumulated other comprehensive income to retained earnings as of January 1, 2018. Additionally, this amendment requires that entities use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. As a result of implementing this standard, the Company’s updated process includes identifying a fair value for loans using the exit price notion. See Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 5: Fair Value Measurements” for further details. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . This ASU update amends current lease accounting and requires all leases, other than short-term leases, to be reported on the balance sheet through the recognition of a right-of-use asset and a corresponding liability for future lease obligations. The amended guidance will be effective for fiscal years beginning after December 15, 2018, including interim periods within those annual periods and will require transition utilizing a modified retrospective approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements (an additional transition method has been provided for in ASU 2018-11, discussed below). Early adoption of this ASU is permitted although the Company does not plan to early adopt. The Company does not anticipate a material impact to revenue or operating expenses as a result of the adoption of this ASU. The Company expects that this ASU will gross up the assets and liabilities on the balance sheet related to the lease assets and liabilities and reduce regulatory capital ratios. In March 2016, the FASB issued ASU 2016-09, Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting . This update is intended to simplify several aspects of the accounting for employee share-based plans such as income tax consequences, classification of awards as either liabilities or equity on the balance sheet, and classification on the statement of cash flows. This ASU was effective for fiscal years beginning after December 15, 2016, including interim periods within those years. The Company adopted this ASU on January 1, 2017. The adoption of this ASU has resulted in, and will continue to result in, fluctuations in the Company’s earnings due to changes in the Company’s stock price between issuance date and settlement date of employee share-based transactions. In addition, the Company anticipates that certain stock options will expire unexercised, due to having no intrinsic value, and this ASU requires the previous tax benefits to be reversed. In June 2016, the FASB issued ASU 2016-13, Financial Instruments (Topic 326) (“ASU 2016-13”). This update is intended to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. To achieve this objective, the amendments in this update replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. This ASU will be effective for fiscal years beginning after December 15, 2019. Early adoption is available as of the fiscal year beginning after December 15, 2018. The Company does not plan on early adopting. The impact of this ASU on the Company’s consolidated financial statements will depend on factors at the time of adoption such as the balance and type of loans on the balance sheet, the Company’s loan loss history, and various qualitative factors. In August 2016, the FASB issued ASU 2016-15. This update is intended to reduce diversity in practice in how certain transactions are classified in the statement of cash flows. This ASU was effective for the Company beginning on January 1, 2018. Early adoption was permitted, provided that all of the amendments are adopted in the same period, however the Company did not early adopt. The guidance requires application using a retrospective transition method. This ASU did not have an impact on the Company’s consolidated financial statements. In March 2017, the FASB issued ASU 2017-07. This amendment requires an employer to report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. This ASU was effective for fiscal years beginning after December 15, 2017, and interim periods within those years. As a result of the adoption of this ASU, $256 thousand and $597 thousand , respectively, have been reclassified from salaries and employee benefits expense to other expense within the Company’s consolidated statement of operations for the three and nine months ended September 30, 2017. For the three and nine months ended September 30, 2018, $131 thousand and $411 thousand , respectively, are presented within other expense that would have been presented within salaries and employee benefits prior to adoption of ASU 2017-07. 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 (“ASU 2017-08”). This update amends the amortization period for certain purchased callable debt securities held at a premium. The amortization period for the premium on such securities is being shortened to the earliest call date. Under current GAAP, entities generally amortize the premium as an adjustment of yield over the contractual life of the instrument. ASU 2017-08 is effective for fiscal years beginning after December 15, 2018, and interim periods within those years. Early adoption is permitted, including in an interim period. The guidance requires application using a modified retrospective transition method through a cumulative-effect adjustment to beginning retained earnings. The Company early adopted this ASU as of July 1, 2017, which had an immaterial impact on the consolidated financial statements. In August 2017, the FASB issued ASU 2017-12. The standard is intended to improve the transparency and understandability of information conveyed to financial statement users about an entity’s risk management activities by better aligning the entity’s financial reporting for hedging relationships with those risk management activities and to reduce the complexity of and simplify the application of hedge accounting by preparers. ASU No. 2017-12 is effective for interim and annual reporting periods beginning after December 15, 2018 and early adoption is permitted. The Company elected to early adopt this ASU as of January 1, 2018 with a modified retrospective transition. As a result of implementing this standard, the Company reclassified $5 thousand in unrealized losses on derivatives from accumulated other comprehensive income to retained earnings as of January 1, 2018. This ASU will provide more flexibility in the Company’s risk management activities and we believe it will enhance the Company’s ability to employ risk management strategies, while improving the transparency and understanding of those strategies for financial statement users. In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This update was issued to address a narrow-scope financial reporting issue that arose as a consequence of the change in the tax law. On December 22, 2017, the U.S. federal government enacted the Tax Act which, among other significant changes, lowers the federal corporate tax rate from 35% to 21% effective January 1, 2018. This update requires a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the enactment of the Tax Act. ASC 740 requires that the tax effects of changes in tax rates be recognized in income tax expense/ (benefit) attributable to continuing operations in the period in which the law is enacted. As a result, the tax effect of accumulated other comprehensive income does not reflect the appropriate tax rate. The amendments in this ASU eliminate the stranded tax effects associated with the change in the federal corporate income tax rate related to the Tax Act and improve the usefulness of information reported to financial statement users. This ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those years. Early adoption is permitted for public business entities for reporting periods for which financial statements have not yet been issued. The Company early adopted this ASU on December 31, 2017 and reclassified $1.5 million from accumulated other comprehensive income to retained earnings. In July 2018, the FASB issued ASU 2018-10, Codification Improvements to Topic 842, Leases (“ASU 2018-10”), and ASU 2018-11, Leases (Topic 842): Targeted Improvements (“ASU 2018-11”). These updates clarify the guidance in ASU 2016-02 which introduced Topic 842, and add an additional transition method for leases. ASU 2018-11 allows entities to initially apply the new leases standard at the adoption date (January 1, 2019 for the Company) and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. This transition method is in addition to the initial modified retrospective transition method, which would require an entity to initially apply the new leases standard (subject to specific transition requirements and optional practical expedients) at the beginning of the earliest period presented in the financial statements (January 1, 2017 for the Company). This means that starting on January 1, 2017, lessees must recognize lease assets and liabilities for all leases even though those leases may have expired before the effective date. Lessees also must provide the new and enhanced disclosures for each period presented, including the comparative periods. ASU 2018-11 would not require the amended disclosures of Topic 842 for comparative periods. The Company will adopt these provisions along with those of ASU 2016-02 as of January 1, 2019, and has elected to use the cumulative effect adjustment transition method, as prescribed by ASU 2018-11. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement (“ASU 2018-13”). The amendments in ASU 2018-13 modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, based on the concepts in the Concepts Statement, including the consideration of costs and benefits. Among other changes, this update removes the requirements to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for timing of transfers between levels, and the valuation processes for Level 3 fair value measurements. This update adds to required disclosures for changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. For certain unobservable inputs, an entity may disclose other quantitative information (such as the median or arithmetic average) in lieu of the weighted average if the entity determines that other quantitative information would be a more reasonable and rational method to reflect the distribution of unobservable inputs used to develop Level 3 fair value measurements. The amendments in this Update are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019, and early adoption is permitted. The Company is still assessing the potential disclosure impact for these amendments and whether to adopt the provisions prior to January 1, 2020. In August 2018, the FASB issued ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans (“ASU 2018-14”). The amendments in ASU 2018-14 remove disclosures that no longer are considered cost beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. This update is effective on a retrospective basis for the Company beginning January 1, 2021. The Company is still assessing the potential impact for this update and how it applies to the Company’s disclosures surrounding its two non-qualified supplemental executive retirement plans (“SERP”) and a long term incentive plan (“LTIP”) at one of its affiliate companies. In August 2018, the FASB issued ASU 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force) (“ASU 2018-15”). The amendments in ASU 2018-15 align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal use software license). The accounting for the service element of a hosting arrangement that is a service contract is not affected by the amendments in ASU 2018-15. This update is effective on a retrospective basis for the Company beginning January 1, 2021. The Company plans to early adopt this update effective January 1, 2019.

Subsequent Event Detail (Notes)

Subsequent Event Detail (Notes)	9 Months Ended
	Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Events BOS Transaction On October 17, 2018 , the Company announced an agreement to sell all of its ownership interest in BOS in a transaction that will result in BOS being majority-owned by members of its management team for an upfront cash payment and a non-voting, revenue share participation interest in BOS. The transaction is expected to close in the fourth quarter of 2018. Completion of the transaction is subject to obtaining client consents, as well as satisfaction of other customary closing conditions. As a result of finalizing the sale agreements and obtaining approval by the Company’s Board of Directors on such date, the Company determined that the criteria for held for sale accounting treatment, which had not been met at September 30, 2018, had been met as of October 17, 2018. Therefore, the Company will classify BOS assets and liabilities as held for sale for the period from October 17, 2018 through the close of the transaction. The Company will receive approximately $21 million of cash at closing and an eight year revenue share. The Company currently estimates that the financial impact of the transaction will result in a pre-tax gain of approximately $18 million and a related tax expense of approximately $3 million to $4 million . The net financial impact will increase Tier 1 Common Equity by approximately $33 million . The financial impact will be recorded at the time of closing. BOS had approximately $4.7 billion of AUM as of September 30, 2018 and accounted for approximately $17.4 million of revenue in the Company’s Wealth Advisory segment, $11.9 million of operating expense, and $2.1 million of net income attributable to noncontrolling interests in the Company’s financial results during the first nine months of 2018. Chief Executive Officer Transition On November 2, 2018 , Clayton G. Deutsch informed the Board of Directors of the Company of his intent to retire from his positions as Chief Executive Officer and President of the Company, member of the Board of Directors of the Company, and as Chief Executive Officer and member of the Board of Directors of the Bank, effective November 26, 2018. On November 5, 2018 , the Company announced that Anthony DeChellis, 56, will become Chief Executive Officer, President, and member of the Board of Directors of the Company, and Chief Executive Officer and member of the Board of Directors of the Bank, effective November 26, 2018. Mr. DeChellis will become President of the Bank on December 1, 2018, following the previously announced retirement of George G. Schwartz.

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Basis of Presentation and Summary of Significant Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	For interim reporting purposes, the Company follows the same significant accounting policies, except for the following new accounting pronouncements from the Financial Accounting Standards Board (the “FASB”) that were adopted effective January 1, 2018: • Accounting Standards Update (“ASU”) 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (“ASU 2017-12”). As a result of implementing this standard, the Company reclassified $5 thousand in unrealized losses on derivatives related to hedge ineffectiveness from accumulated other comprehensive income to retained earnings as of January 1, 2018. This ASU will provide more flexibility in the Company’s risk management activities and we believe it will enhance the Company’s ability to employ risk management strategies, while improving the transparency and understanding of those strategies for financial statement users. • ASU 2017-07, Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost ( “ASU 2017-07”). This amendment requires an employer to report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. As a result of the retrospective adoption of this ASU, $256 thousand and $597 thousand for the three and nine months ended September 30, 2017, respectively, have been reclassified from salaries and employee benefits expense to other expense within the Company’s consolidated statement of operations. For the three and nine months ended September 30, 2018, $131 thousand and $411 thousand , respectively, are presented within other expense that would have been presented within salaries and employee benefits prior to adoption of ASU 2017-07. • ASU 2016-15, Statement of Cash Flows (Topic 230) (“ASU 2016-15”). This update is intended to reduce diversity in practice in how certain transactions are classified in the statement of cash flows. This ASU is effective for the Company beginning on January 1, 2018. The guidance requires application using a retrospective transition method. This ASU did not have an impact on the Company’s consolidated financial statements. • ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”). This amendment requires equity investments to be measured at fair value with changes in fair value, net of tax, recognized in net income. As a result of implementing this standard, the Company reclassified $339 thousand in unrealized gains on available-for-sale equity investments, net of tax, from accumulated other comprehensive income to retained earnings as of January 1, 2018. Additionally, this amendment requires that entities use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. As a result of implementing this standard, the Company’s updated process includes identifying a fair value for loans using the exit price notion. See Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 5: Fair Value Measurements” for further details. • ASU 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”), which was subsequently amended by additional ASUs, including ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net) and ASU 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients , collectively, “ASU 2014-09 et al. ” ASU 2014-09 et al. was adopted using the modified retrospective transition method as of January 1, 2018, however no cumulative effect adjustment was required. This new guidance was applied to all revenue contracts in place at the date of adoption. See Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 13: Revenue Recognition” for further details.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]	The treasury stock method of calculating earnings per share (“EPS”) is presented below for the three and nine months ended September 30, 2018 and 2017 . The following tables present the computations of basic and diluted EPS: Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (In thousands, except share and per share data) Basic earnings per share - Numerator: Net income from continuing operations $ 18,886 $ 19,691 $ 48,328 $ 58,180 Less: Net income attributable to noncontrolling interests 924 1,074 2,942 3,190 Net income from continuing operations attributable to the Company 17,962 18,617 45,386 54,990 Decrease/ (increase) in noncontrolling interests’ redemption values (1) (829 ) (278 ) (391 ) (283 ) Dividends on preferred stock (2) — (868 ) (3,985 ) (2,606 ) Total adjustments to income attributable to common shareholders (829 ) (1,146 ) (4,376 ) (2,889 ) Net income from continuing operations attributable to common shareholders, treasury stock method 17,133 17,471 41,010 52,101 Net income from discontinued operations — 1,186 1,696 3,881 Net income attributable to common shareholders, treasury stock method $ 17,133 $ 18,657 $ 42,706 $ 55,982 Basic earnings per share - Denominator: Weighted average basic common shares outstanding 84,017,284 82,556,225 83,544,754 82,270,849 Per share data - Basic earnings per share from: Continuing operations $ 0.20 $ 0.21 $ 0.49 $ 0.63 Discontinued operations $ — $ 0.01 $ 0.02 $ 0.05 Total attributable to common shareholders $ 0.20 $ 0.23 $ 0.51 $ 0.68 Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (In thousands, except share and per share data) Diluted earnings per share - Numerator: Net income from continuing operations attributable to common shareholders, after assumed dilution $ 17,133 $ 17,471 $ 41,010 $ 52,101 Net income from discontinued operations — 1,186 1,696 3,881 Net income attributable to common shareholders, after assumed dilution $ 17,133 $ 18,657 $ 42,706 $ 55,982 Diluted earnings per share - Denominator: Weighted average basic common shares outstanding 84,017,284 82,556,225 83,544,754 82,270,849 Dilutive effect of: Stock options, performance-based and time-based restricted stock, and performance-based and time-based restricted stock units, and other dilutive securities (3) 853,906 1,233,888 1,052,855 1,333,830 Warrants to purchase common stock (3) 627,378 1,098,198 656,686 1,136,493 Dilutive common shares 1,481,284 2,332,086 1,709,541 2,470,323 Weighted average diluted common shares outstanding (3) 85,498,568 84,888,311 85,254,295 84,741,172 Per share data - Diluted earnings per share from: Continuing operations $ 0.20 $ 0.21 $ 0.48 $ 0.61 Discontinued operations $ — $ 0.01 $ 0.02 $ 0.05 Total attributable to common shareholders $ 0.20 $ 0.22 $ 0.50 $ 0.66 Dividends per share declared and paid on common stock $ 0.12 $ 0.11 $ 0.36 $ 0.33 _____________________ (1) See Part II. Item 8. “Financial Statements and Supplementary Data - Note 14: Noncontrolling Interests” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 for a description of the redemption values related to the redeemable noncontrolling interests. In accordance with the FASB Accounting Standards Codification (“ASC”) 480, Distinguishing Liabilities from Equity (“ASC 480”), an increase in redemption value from period to period reduces income attributable to common shareholders. Decreases in redemption value from period to period increase income attributable to common shareholders, but only to the extent that the cumulative change in redemption value remains a cumulative increase since adoption of this standard in the first quarter of 2009. (2) Consideration paid in excess of carrying value for the redemption of the 6.95% Non-Cumulative Perpetual Preferred Stock, Series D (“the Series D preferred stock”) of $2.2 million is considered a deemed dividend and, for purposes of calculating EPS, reduces net income attributable to common shareholders for the three and nine months ended September 30, 2018. (3) The diluted EPS computations for the three and nine months ended September 30, 2018 and 2017 do not assume the conversion, exercise, or contingent issuance of the following shares for the following periods because the result would have been anti-dilutive for the periods indicated. As a result of the anti-dilution, the potential common shares excluded from the diluted EPS computation are as follows: Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Shares excluded due to exercise price exceeding the average market price of common shares during the period (total outstanding): (In thousands) Potential common shares from: Stock options 408 48 226 74 Total shares excluded due to exercise price exceeding the average market price of common shares during the period 408 48 226 74

Reportable Segments (Tables)

Reportable Segments (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	The following tables present a reconciliation of the revenues, profits, assets, and other significant items of reportable segments as of and for the three and nine months ended September 30, 2018 and 2017 . Interest expense on junior subordinated debentures is reported at the Holding Company. Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Private Banking (In thousands) Net interest income $ 60,551 $ 57,295 $ 177,129 $ 169,334 Fees and other income 3,337 3,720 8,637 8,182 Total revenues 63,888 61,015 185,766 177,516 Provision/ (credit) for loan losses (949 ) (432 ) (2,291 ) (6,727 ) Operating expense 44,706 38,482 124,003 110,444 Income before income taxes 20,131 22,965 64,054 73,799 Income tax expense 4,469 6,634 13,063 22,112 Net income from continuing operations 15,662 16,331 50,991 51,687 Net income attributable to the Company $ 15,662 $ 16,331 $ 50,991 $ 51,687 Assets $ 8,292,901 $ 8,113,836 $ 8,292,901 $ 8,113,836 Depreciation $ 2,398 $ 1,431 $ 6,013 $ 4,145 Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Wealth Management and Trust (In thousands) Fees and other income $ 11,636 $ 11,739 $ 35,203 $ 33,934 Operating expense 10,905 11,752 32,657 37,562 Income/ (loss) before income taxes 731 (13 ) 2,546 (3,628 ) Income tax expense/ (benefit) 220 (125 ) 729 (1,530 ) Net income/ (loss) from continuing operations 511 112 1,817 (2,098 ) Net income/ (loss) attributable to the Company $ 511 $ 112 $ 1,817 $ (2,098 ) Assets $ 79,473 $ 73,511 $ 79,473 $ 73,511 Amortization of intangibles $ 701 $ 727 $ 2,103 $ 2,181 Depreciation $ 328 $ 330 $ 983 $ 1,008 Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Investment Management (1) (In thousands) Net interest income $ — $ 8 $ 6 $ 16 Fees and other income 3,245 11,280 18,887 33,230 Total revenues 3,245 11,288 18,893 33,246 Operating expense 2,235 8,407 13,880 25,107 Income before income taxes 1,010 2,881 5,013 8,139 Income tax expense 222 981 1,142 2,719 Net income from continuing operations 788 1,900 3,871 5,420 Noncontrolling interests 188 451 878 1,425 Net income attributable to the Company $ 600 $ 1,449 $ 2,993 $ 3,995 Assets $ 7,496 $ 93,910 $ 7,496 $ 93,910 Amortization of intangibles $ — $ 650 $ — $ 1,951 Depreciation $ 29 $ 62 $ 95 $ 189 Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Wealth Advisory (In thousands) Net interest income $ 99 $ 36 $ 224 $ 82 Fees and other income 14,022 13,299 41,278 39,122 Total revenues 14,121 13,335 41,502 39,204 Operating expense 9,510 9,174 29,273 27,560 Income before income taxes 4,611 4,161 12,229 11,644 Income tax expense 1,242 1,562 3,242 4,360 Net income from continuing operations 3,369 2,599 8,987 7,284 Noncontrolling interests 736 623 2,064 1,765 Net income attributable to the Company $ 2,633 $ 1,976 $ 6,923 $ 5,519 Assets $ 79,907 $ 77,289 $ 79,907 $ 77,289 Amortization of intangibles $ 49 $ 49 $ 146 $ 146 Depreciation $ 161 $ 237 $ 488 $ 698 Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Holding Company and Eliminations (In thousands) Net interest income $ (1,009 ) $ (711 ) $ (2,790 ) $ (2,018 ) Fees and other income 74 229 147 323 Total revenues (935 ) (482 ) (2,643 ) (1,695 ) Operating expense 1,201 1,531 3,985 5,274 Income/ (loss) before income taxes (2,136 ) (2,013 ) (6,628 ) (6,969 ) Income tax expense/ (benefit) (2) (692 ) (763 ) 10,710 (2,856 ) Net income/ (loss) from continuing operations (1,444 ) (1,250 ) (17,338 ) (4,113 ) Discontinued operations — 1,186 1,696 3,881 Net income/ (loss) attributable to the Company $ (1,444 ) $ (64 ) $ (15,642 ) $ (232 ) Assets (including eliminations) $ (83,937 ) $ (89,148 ) $ (83,937 ) $ (89,148 ) Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Total Company (In thousands) Net interest income $ 59,641 $ 56,627 $ 174,569 $ 167,414 Fees and other income 32,314 40,267 104,152 114,791 Total revenues 91,955 96,894 278,721 282,205 Provision/ (credit) for loan losses (949 ) (432 ) (2,291 ) (6,727 ) Operating expense 68,557 69,346 203,798 205,947 Income before income taxes 24,347 27,980 77,214 82,985 Income tax expense 5,461 8,289 28,886 24,805 Net income from continuing operations 18,886 19,691 48,328 58,180 Noncontrolling interests 924 1,074 2,942 3,190 Discontinued operations — 1,186 1,696 3,881 Net income attributable to the Company $ 17,962 $ 19,803 $ 47,082 $ 58,871 Assets $ 8,375,840 $ 8,269,398 $ 8,375,840 $ 8,269,398 Amortization of intangibles $ 750 $ 1,426 $ 2,249 $ 4,278 Depreciation $ 2,916 $ 2,060 $ 7,579 $ 6,040 _____________________ (1) Results for the Investment Management segment for the three and nine months ended September 30, 2017 include results for DGHM and Anchor. Results for the Investment Management segment for the nine months ended September 30, 2018 include results for DGHM and results for Anchor through its sale date in April 2018. Assets for the Investment Management segment at September 30, 2017 include assets of DGHM and Anchor. Assets for the Investment Management segment at September 30, 2018 include assets of DGHM. (2) Income tax expense/ (benefit) for the nine months ended September 30, 2018 include $12.7 million in additional expense related to the sale of Anchor in April 2018.

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]	The following tables present a summary of investment securities: Amortized Cost Unrealized Fair Value Gains Losses (In thousands) At September 30, 2018 Available-for-sale securities at fair value: U.S. government and agencies $ 35,025 $ — $ (1,526 ) $ 33,499 Government-sponsored entities 275,767 — (6,942 ) 268,825 Municipal bonds 304,473 1,130 (5,614 ) 299,989 Mortgage-backed securities (1) 479,412 208 (25,672 ) 453,948 Other (2) 7,079 — — 7,079 Total $ 1,101,756 $ 1,338 $ (39,754 ) $ 1,063,340 Held-to-maturity securities at amortized cost: U.S. government and agencies $ 11,964 — $ (1 ) $ 11,963 Mortgage-backed securities (1) 63,504 — (2,540 ) 60,964 Total $ 75,468 $ — $ (2,541 ) $ 72,927 At December 31, 2017 Available-for-sale securities at fair value: U.S. government and agencies $ 35,132 $ — $ (833 ) $ 34,299 Government-sponsored entities 305,101 22 (2,622 ) 302,501 Municipal bonds 299,647 4,559 (1,148 ) 303,058 Mortgage-backed securities (1) 521,753 491 (12,568 ) 509,676 Other (2) 20,794 — — 20,794 Total $ 1,182,427 $ 5,072 $ (17,171 ) $ 1,170,328 Held-to-maturity securities at amortized cost: Mortgage-backed securities (1) $ 74,576 $ — $ (795 ) $ 73,781 Total $ 74,576 $ — $ (795 ) $ 73,781 _____________________ (1) All mortgage-backed securities are guaranteed by the U.S. government, U.S. government agencies, or government-sponsored entities. (2) Included in Other available-for-sale securities as of September 30, 2018 and December 31, 2017 are primarily money market mutual fund securities.
Investments Classified by Contractual Maturity Date [Table Text Block]	The following table presents the maturities of available-for-sale investment securities, based on contractual maturity, as of September 30, 2018 . Certain securities are callable before their final maturity. Additionally, certain securities (such as mortgage-backed securities) are shown within the table below based on their final (contractual) maturity, but due to prepayments and amortization are expected to have shorter lives. Available-for-sale Securities Amortized cost Fair value (In thousands) Within one year $ 106,582 $ 106,168 After one, but within five years 295,910 288,004 After five, but within ten years 294,991 279,099 Greater than ten years 404,273 390,069 Total $ 1,101,756 $ 1,063,340 The following table presents the maturities of held-to-maturity investment securities, based on contractual maturity, as of September 30, 2018 . Held-to-maturity Securities Amortized cost Fair value (In thousands) Within one year $ 11,964 $ 11,963 After one, but within five years — — After five, but within ten years 41,413 39,807 Greater than ten years 22,091 21,157 Total $ 75,468 $ 72,927
Realized Gain (Loss) on Investments [Table Text Block]	The following table presents the proceeds from sales, gross realized gains and gross realized losses for available-for-sale securities that were sold or called during the following periods as well as changes in the fair value of equity securities as prescribed by ASC 321, Investment - Equity Securities . ASU 2016-01, Recognition and Measurements of Financial Assets and Financial Liabilities was adopted on January 1, 2018, at which time a cumulative effect adjustment of $339 thousand was recorded to reclassify the amount of accumulated unrealized gains related to equity securities from accumulated other comprehensive income to retained earnings. Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (In thousands) Proceeds from sales (1) $ 16,231 $ 16,207 $ 51,781 $ 119,238 Realized gains — 235 7 509 Realized losses — (5 ) (1 ) (23 ) Change in unrealized gain/ (loss) on equity securities reflected in the consolidated statement of operations — n/a (23 ) n/a _____________________ (1) Included in Proceeds from sales are proceeds from the sale of money market mutual funds of $16.2 million and $51.8 million for the three and nine months ended September 30, 2018 , respectively and $8.2 million and $53.6 million for the three and nine months ended September 30, 2017, respectively. Money market mutual funds maintain a constant net asset value of $1.00 and therefore have no realized gain or loss when sold.
Schedule of Unrealized Loss on Investments [Table Text Block]	The following tables present information regarding securities at September 30, 2018 and December 31, 2017 having temporary impairment, due to the fair values having declined below the amortized cost of the individual securities, and the time period that the investments have been temporarily impaired. Less than 12 months 12 months or longer Total Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses # of securities (In thousands, except number of securities) September 30, 2018 Available-for-sale securities U.S. government and agencies $ 4,966 $ (31 ) $ 28,533 $ (1,495 ) $ 33,499 $ (1,526 ) 6 Government-sponsored entities 127,616 (1,937 ) 141,209 (5,005 ) 268,825 (6,942 ) 40 Municipal bonds 192,479 (2,799 ) 47,750 (2,815 ) 240,229 (5,614 ) 124 Mortgage-backed securities (1) 30,247 (960 ) 410,701 (24,712 ) 440,948 (25,672 ) 110 Total $ 355,308 $ (5,727 ) $ 628,193 $ (34,027 ) $ 983,501 $ (39,754 ) 280 Held-to-maturity securities U.S. government and agencies 11,963 (1 ) — — 11,963 (1 ) 2 Mortgage-backed securities (1) $ 8,866 $ (307 ) $ 52,098 $ (2,233 ) $ 60,964 $ (2,540 ) 16 Total $ 20,829 $ (308 ) $ 52,098 $ (2,233 ) $ 72,927 $ (2,541 ) 18 Less than 12 months 12 months or longer Total Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses # of securities (In thousands, except number of securities) December 31, 2017 Available-for-sale securities U.S. government and agencies $ 14,902 $ (79 ) $ 19,397 $ (754 ) $ 34,299 $ (833 ) 6 Government-sponsored entities 220,275 (1,350 ) 38,273 (1,272 ) 258,548 (2,622 ) 36 Municipal bonds 46,112 (131 ) 50,842 (1,017 ) 96,954 (1,148 ) 63 Mortgage-backed securities (1) 97,117 (903 ) 386,785 (11,665 ) 483,902 (12,568 ) 103 Total $ 378,406 $ (2,463 ) $ 495,297 $ (14,708 ) $ 873,703 $ (17,171 ) 208 Held-to-maturity securities Mortgage-backed securities (1) $ 59,218 $ (534 ) $ 14,563 $ (261 ) $ 73,781 $ (795 ) 16 Total $ 59,218 $ (534 ) $ 14,563 $ (261 ) $ 73,781 $ (795 ) 16 _____________________ (1) All mortgage-backed securities are guaranteed by the U.S. government, U.S. government agencies, or government-sponsored entities.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	The following tables present the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2018 and December 31, 2017 , aggregated by the level in the fair value hierarchy within which those measurements fall: As of September 30, 2018 Fair value measurements at reporting date using: Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) (In thousands) Assets: Available-for-sale securities: U.S. government and agencies $ 33,499 $ — $ 33,499 $ — Government-sponsored entities 268,825 — 268,825 — Municipal bonds 299,989 — 299,989 — Mortgage-backed securities 453,948 — 453,948 — Other (1) 7,079 7,079 — — Total available-for-sale securities 1,063,340 7,079 1,056,261 — Derivatives - interest rate customer swaps 27,792 — 27,792 — Derivatives - interest rate swaps 903 — 903 — Derivatives - risk participation agreement 20 — 20 — Trading securities held in the “rabbi trust” (2) 7,806 7,806 — — Liabilities: Derivatives - interest rate customer swaps $ 28,209 $ — $ 28,209 $ — Derivatives - risk participation agreement 90 — 90 — Deferred compensation “rabbi trust” (2) 7,806 7,806 — — Fair value measurements at reporting date using: As of December 31, 2017 Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) (In thousands) Assets: Available-for-sale securities: U.S. government and agencies $ 34,299 $ 34,096 $ 203 $ — Government-sponsored entities 302,501 — 302,501 — Municipal bonds 303,058 — 303,058 — Mortgage-backed securities 509,676 — 509,676 — Other 20,794 20,794 — — Total available-for-sale securities 1,170,328 54,890 1,115,438 — Derivatives - interest rate customer swaps 18,575 — 18,575 — Derivatives - interest rate swaps 555 — 555 — Derivatives - risk participation agreements 1 — 1 — Derivatives - customer foreign exchange forwards 2 — 2 — Trading securities held in the “rabbi trust” (2) 7,062 7,062 — — Liabilities: Derivatives - interest rate customer swaps $ 18,953 $ — $ 18,953 $ — Derivatives - interest rate swaps 80 — 80 — Derivatives - risk participation agreements 108 — 108 — Derivatives - customer foreign exchange forwards 2 — 2 — Deferred compensation “rabbi trust” (2) 7,062 7,062 — — _____________________ (1) Other available-for-sale securities as of September 30, 2018 and December 31, 2017 consisted of primarily money market mutual fund securities. (2) The Company has adopted a special trust for the Deferred Compensation Plan called a “rabbi trust.” The rabbi trust is an arrangement that is used to accumulate assets that may be used to fund the Company’s obligation to pay benefits under the Deferred Compensation Plan. To prevent immediate taxation to the executives who participate in the Deferred Compensation Plan, the amounts placed in the rabbi trust must remain subject to the claims of the Company’s creditors. The investments chosen by the participants in the Deferred Compensation Plan are mirrored by the rabbi trust as a way to minimize the earnings volatility of the Deferred Compensation Plan.
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Table Text Block]	The following tables present the Company’s assets and liabilities measured at fair value on a non-recurring basis during the periods ended September 30, 2018 and 2017, respectively, aggregated by the level in the fair value hierarchy within which those measurements fall. As of September 30, 2018 Fair value measurements at reporting date using: Gain (losses) from fair value changes Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Three months ended September 30, 2018 Nine months ended September 30, 2018 (In thousands) Assets: Impaired loans (1) $ 2,005 $ — $ — $ 2,005 $ (440 ) $ (1,367 ) _____________________ (1) Collateral-dependent impaired loans held at September 30, 2018 that had write-downs in fair value or whose specific reserve changed during the first nine months of 2018 . As of September 30, 2017 Fair value measurements at reporting date using: Gain (losses) from fair value changes Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Three months ended September 30, 2017 Nine months ended September 30, 2017 (In thousands) Assets: Impaired loans (1) $ 1,978 $ — $ — $ 1,978 $ (255 ) $ (474 ) _____________________ (1) Collateral-dependent impaired loans held at September 30, 2017 that had write-downs in fair value or whose specific reserve changed during the first nine months of 2017 .
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Table Text Block]	The following tables present additional quantitative information about assets measured at fair value on a non-recurring basis for which the Company has utilized Level 3 inputs to determine fair value: As of September 30, 2018 Fair Value Valuation Technique Unobservable Input Range of Inputs Utilized Weighted Average of Inputs Utilized (In thousands) Impaired Loans $ 2,005 Appraisals of Collateral Discount for costs to sell 0% - 23% 6% Appraisal adjustments —% —% As of September 30, 2017 Fair Value Valuation Technique Unobservable Input Range of Inputs Utilized Weighted Average of Inputs Utilized (In thousands) Impaired Loans $ 1,978 Appraisals of Collateral Discount for costs to sell 0% - 7% 4% Appraisal adjustments 0% - 51% 17%
Fair Value, by Balance Sheet Grouping [Table Text Block]	The following tables present the carrying values and fair values of the Company’s financial instruments that are not measured at fair value on a recurring basis: As of September 30, 2018 Book Value Fair Value Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) (In thousands) FINANCIAL ASSETS: Cash and cash equivalents $ 92,634 $ 92,634 $ 92,634 $ — $ — Investment securities held-to-maturity 75,468 72,927 — 72,927 — Loans held for sale 3,344 3,374 — 3,374 — Loans, net 6,646,920 6,542,225 — — 6,542,225 Other financial assets 83,813 83,813 — 83,813 — FINANCIAL LIABILITIES: Deposits 6,768,723 6,765,393 — 6,765,393 — Securities sold under agreements to repurchase 39,453 39,453 — 39,453 — Federal funds purchased 120,000 120,000 — 120,000 — Federal Home Loan Bank borrowings 441,836 437,887 — 437,887 — Junior subordinated debentures 106,363 96,363 — — 96,363 Other financial liabilities 2,964 2,964 — 2,964 — As of December 31, 2017 Book Value Fair Value Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) (In thousands) FINANCIAL ASSETS: Cash and cash equivalents $ 120,541 $ 120,541 $ 120,541 $ — $ — Investment securities held-to-maturity 74,576 73,781 — 73,781 — Loans held for sale 4,697 4,737 — 4,737 — Loans, net 6,430,286 6,388,297 — — 6,388,297 Other financial assets 93,449 93,449 — 93,449 — FINANCIAL LIABILITIES: Deposits 6,510,246 6,509,197 — 6,509,197 — Securities sold under agreements to repurchase 32,169 32,169 — 32,169 — Federal funds purchased 30,000 30,000 — 30,000 — Federal Home Loan Bank borrowings 693,681 692,402 — 692,402 — Junior subordinated debentures 106,363 96,363 — — 96,363 Other financial liabilities 2,224 2,224 — 2,224 —

Loan Portfolio and Credit Qua_2

Loan Portfolio and Credit Quality (Tables)	9 Months Ended
	Sep. 30, 2018
Loans and Leases Receivable Disclosure [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	The following table presents a summary of the loan portfolio based on the portfolio segment as of the dates indicated: September 30, 2018 December 31, 2017 (In thousands) Commercial and industrial $ 583,214 $ 520,992 Commercial tax-exempt 438,807 418,698 Total commercial and industrial 1,022,021 939,690 Commercial real estate 2,399,080 2,440,220 Construction and land 197,524 164,990 Residential 2,862,879 2,682,533 Home equity 93,390 99,958 Consumer and other 145,526 177,637 Total $ 6,720,420 $ 6,505,028
Schedule of Financing Receivables, Non Accrual Status [Table Text Block]	The following table presents nonaccrual loans receivable by class of receivable as of the dates indicated: September 30, 2018 December 31, 2017 (In thousands) Commercial and industrial $ 1,968 $ 748 Commercial tax-exempt — — Total commercial and industrial 1,968 748 Commercial real estate 546 1,985 Construction and land — 110 Residential 6,798 8,470 Home equity 2,773 2,840 Consumer and other 12 142 Total $ 12,097 $ 14,295
Past Due Financing Receivables [Table Text Block]	The following tables show the payment status of loans receivable by class of receivable as of the dates indicated: September 30, 2018 Accruing Past Due Nonaccrual Loans 30-59 Days Past Due 60-89 Days Past Due Total Accruing Past Due Current 30-89 Days Past Due 90 Days or Greater Past Due Total Non-Accrual Loans Current Accruing Loans Total Loans Receivable (In thousands) Commercial and industrial $ 1,645 $ 2,686 $ 4,331 $ 1,213 $ 43 $ 712 $ 1,968 $ 576,915 $ 583,214 Commercial tax-exempt — — — — — — — 438,807 438,807 Commercial real estate 326 661 987 — — 546 546 2,397,547 2,399,080 Construction and land — — — — — — — 197,524 197,524 Residential — 4,518 4,518 1,134 197 5,467 6,798 2,851,563 2,862,879 Home equity 901 867 1,768 — — 2,773 2,773 88,849 93,390 Consumer and other 3 — 3 2 10 — 12 145,511 145,526 Total $ 2,875 $ 8,732 $ 11,607 $ 2,349 $ 250 $ 9,498 $ 12,097 $ 6,696,716 $ 6,720,420 December 31, 2017 Accruing Past Due Nonaccrual Loans 30-59 Days Past Due 60-89 Days Past Due Total Accruing Past Due Current 30-89 Days Past Due 90 Days or Greater Past Due Total Non-Accrual Loans Current Accruing Loans Total Loans Receivable (In thousands) Commercial and industrial $ 10,903 $ 849 $ 11,752 $ 355 $ — $ 393 $ 748 $ 508,492 $ 520,992 Commercial tax-exempt — — — — — — — 418,698 418,698 Commercial real estate 4,043 — 4,043 163 — 1,822 1,985 2,434,192 2,440,220 Construction and land — — — — — 110 110 164,880 164,990 Residential 7,239 1,635 8,874 805 3,172 4,493 8,470 2,665,189 2,682,533 Home equity 355 — 355 — 71 2,769 2,840 96,763 99,958 Consumer and other 24 — 24 17 125 — 142 177,471 177,637 Total $ 22,564 $ 2,484 $ 25,048 $ 1,340 $ 3,368 $ 9,587 $ 14,295 $ 6,465,685 $ 6,505,028
Financing Receivable Credit Quality Indicators [Table Text Block]	The following tables present the loan portfolio’s credit risk profile by internally assigned grade and class of receivable as of the dates indicated: September 30, 2018 By Loan Grade or Nonaccrual Status Pass Special Mention Accruing Classified (1) Nonaccrual Loans Total (In thousands) Commercial and industrial $ 548,827 $ 11,904 $ 20,515 $ 1,968 $ 583,214 Commercial tax-exempt 431,918 2,837 4,052 — 438,807 Commercial real estate 2,322,294 47,195 29,045 546 2,399,080 Construction and land 191,608 5,470 446 — 197,524 Residential 2,854,759 — 1,322 6,798 2,862,879 Home equity 90,617 — — 2,773 93,390 Consumer and other 145,514 — — 12 145,526 Total $ 6,585,537 $ 67,406 $ 55,380 $ 12,097 $ 6,720,420 December 31, 2017 By Loan Grade or Nonaccrual Status Pass Special Accruing Nonaccrual Total (In thousands) Commercial and industrial $ 496,395 $ 12,898 $ 10,951 $ 748 $ 520,992 Commercial tax-exempt 413,139 5,559 — — 418,698 Commercial real estate 2,346,833 56,947 34,455 1,985 2,440,220 Construction and land 146,514 11,770 6,596 110 164,990 Residential 2,672,714 — 1,349 8,470 2,682,533 Home equity 97,118 — — 2,840 99,958 Consumer and other 177,494 — 1 142 177,637 Total $ 6,350,207 $ 87,174 $ 53,352 $ 14,295 $ 6,505,028 ______________________ (1) Accruing Classified includes both Substandard and Doubtful classifications.
Impaired Financing Receivables [Table Text Block]	The following tables present, by class of receivable, the balance of impaired loans with and without a related allowance, the associated allowance for those impaired loans with a related allowance, and the total unpaid principal on impaired loans: As of and for the three and nine months ended September 30, 2018 Recorded Investment (1) Unpaid Principal Balance Related Allowance QTD Average Recorded Investment YTD Average Recorded Investment QTD Interest Income Recognized while Impaired YTD Interest Income Recognized while Impaired (In thousands) With no related allowance recorded: Commercial and industrial $ 1,150 $ 2,083 n/a $ 1,617 $ 1,730 $ 33 $ 55 Commercial tax-exempt — — n/a — — — — Commercial real estate 1,625 2,966 n/a 2,526 2,439 583 633 Construction and land — — n/a — 66 — 16 Residential 7,097 7,457 n/a 10,102 10,002 146 335 Home equity — — n/a — 1,056 — 24 Consumer and other — — n/a — — — — Subtotal 9,872 12,506 n/a 14,245 15,293 762 1,063 With an allowance recorded: Commercial and industrial 1,635 1,638 $ 577 625 322 4 6 Commercial tax-exempt — — — — — — — Commercial real estate — — — 4,045 5,314 476 704 Construction and land — — — — — — — Residential 682 681 74 734 787 5 17 Home equity 1,769 1,769 596 1,769 729 1 1 Consumer and other — — — — 13 — 3 Subtotal 4,086 4,088 1,247 7,173 7,165 486 731 Total: Commercial and industrial 2,785 3,721 577 2,242 2,052 37 61 Commercial tax-exempt — — — — — — — Commercial real estate 1,625 2,966 — 6,571 7,753 1,059 1,337 Construction and land — — — — 66 — 16 Residential 7,779 8,138 74 10,836 10,789 151 352 Home equity 1,769 1,769 596 1,769 1,785 1 25 Consumer and other — — — — 13 — 3 Total $ 13,958 $ 16,594 $ 1,247 $ 21,418 $ 22,458 $ 1,248 $ 1,794 _____________________ (1) Recorded investment represents the client loan balance net of historical charge-offs and historical nonaccrual interest paid, if applicable, which was applied to principal. As of and for the three and nine months ended September 30, 2017 Recorded Investment (1) Unpaid Principal Balance Related Allowance QTD Average Recorded Investment YTD Average Recorded Investment QTD Interest Income Recognized while Impaired YTD Interest Income Recognized while Impaired (In thousands) With no related allowance recorded: Commercial and industrial $ 1,371 $ 1,988 n/a $ 1,626 $ 1,665 $ 18 $ 43 Commercial tax-exempt — — n/a — 1,301 — 80 Commercial real estate 2,463 5,972 n/a 2,690 3,465 107 1,077 Construction and land 207 241 n/a 218 191 — — Residential 8,859 9,231 n/a 9,069 8,938 98 277 Home equity — — n/a — — — — Consumer and other — — n/a — — — — Subtotal 12,900 17,432 n/a 13,603 15,560 223 1,477 With an allowance recorded: Commercial and industrial 598 598 $ 242 149 60 1 1 Commercial tax-exempt — — — — — — — Commercial real estate 6,911 7,341 415 6,955 7,012 76 247 Construction and land — — — — — — — Residential 1,200 1,200 127 2,175 2,938 18 80 Home equity 36 36 21 36 37 — 1 Consumer and other — — — — — — — Subtotal 8,745 9,175 805 9,315 10,047 95 329 Total: Commercial and industrial 1,969 2,586 242 1,775 1,725 19 44 Commercial tax-exempt — — — — 1,301 — 80 Commercial real estate 9,374 13,313 415 9,645 10,477 183 1,324 Construction and land 207 241 — 218 191 — — Residential 10,059 10,431 127 11,244 11,876 116 357 Home equity 36 36 21 36 37 — 1 Consumer and other — — — — — — — Total $ 21,645 $ 26,607 $ 805 $ 22,918 $ 25,607 $ 318 $ 1,806 _____________________ (1) Recorded investment represents the client loan balance net of historical charge-offs and historical nonaccrual interest paid, if applicable, which was applied to principal. As of and for the year ended December 31, 2017 Recorded Investment (1) Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized while Impaired (In thousands) With no related allowance recorded: Commercial and industrial $ 1,434 $ 2,238 n/a $ 1,594 $ 50 Commercial tax-exempt — — n/a 1,001 80 Commercial real estate 1,832 3,453 n/a 3,098 1,546 Construction and land 109 109 n/a 172 — Residential 9,337 9,709 n/a 9,033 360 Home equity 1,779 1,779 n/a 413 — Consumer and other — — n/a — — Subtotal 14,491 17,288 n/a 15,311 2,036 With an allowance recorded: Commercial and industrial 242 242 $ 58 156 4 Commercial tax-exempt — — — — — Commercial real estate 6,855 7,284 362 6,980 322 Construction and land — — — — — Residential 828 828 89 2,469 89 Home equity 36 36 20 36 1 Consumer and other 125 250 125 10 — Subtotal 8,086 8,640 654 9,651 416 Total: Commercial and industrial 1,676 2,480 58 1,750 54 Commercial tax-exempt — — — 1,001 80 Commercial real estate 8,687 10,737 362 10,078 1,868 Construction and land 109 109 — 172 — Residential 10,165 10,537 89 11,502 449 Home equity 1,815 1,815 20 449 1 Consumer and other 125 250 125 10 — Total $ 22,577 $ 25,928 $ 654 $ 24,962 $ 2,452 _____________________ (1) Recorded investment represents the client loan balance net of historical charge-offs and historical nonaccrual interest paid, if applicable, which was applied to principal.
Troubled Debt Restructurings on Financing Receivables [Table Text Block]	Since all TDR loans are considered impaired loans, they are individually evaluated for impairment. The resulting impairment, if any, would have an impact on the allowance for loan losses as a specific reserve or charge-off. If, prior to the classification as a TDR, the loan was not impaired, there would have been a general or allocated reserve on the particular loan. Therefore, depending upon the result of the impairment analysis, there could be an increase or decrease in the related allowance for loan losses. Many loans initially categorized as TDRs are already on nonaccrual status and are already considered impaired. Therefore, there is generally not a material change to the allowance for loan losses when a nonaccruing loan is categorized as a TDR. As of and for the three months ended September 30, 2018 Restructured Current Quarter TDRs that defaulted in the Current Quarter that were restructured in prior twelve months # of Loans Pre- modification recorded investment Post- modification recorded investment # of Loans Post- modification recorded investment (In thousands, except number of loans) Commercial and industrial — $ — $ — — $ — Commercial tax exempt — — — — — Commercial real estate — — — — — Construction and land — — — — — Residential (1) 1 2,072 2,107 — — Home equity — — — — — Consumer and other — — — — — Total 1 $ 2,072 $ 2,107 — $ — As of and for the nine months ended September 30, 2018 Restructured Current Quarter TDRs that defaulted in the Current Quarter that were restructured in prior twelve months # of Loans Pre- modification recorded investment Post- modification recorded investment # of Loans Post- modification recorded investment (In thousands, except number of loans) Commercial and industrial (2) 1 $ 100 $ 100 — $ — Commercial tax exempt — — — — — Commercial real estate — — — — — Construction and land — — — — — Residential (1) 1 2,072 2,107 — — Home equity — — — — — Consumer and other — — — — — Total 2 $ 2,172 $ 2,207 — $ — As of and for the three and nine months ended September 30, 2017 Restructured in the current quarter and year to date TDRs that defaulted # of Loans Pre- modification recorded investment Post- modification recorded investment # of Loans Post- modification recorded investment (In thousands, except number of loans) Commercial and industrial — $ — $ — — $ — Commercial tax exempt — — — — — Commercial real estate — — — — — Construction and land — — — — — Residential (1) 1 108 109 — — Home equity — — — — — Consumer and other — — — — — Total 1 $ 108 $ 109 — $ — ______________________ (1) Represents the following type of concession: temporary reduction of interest rate. (2) Represents the following type of concession: extension of term.
Loan Participation Amounts by Loan Type [Table Text Block]	The following table presents a summary of the loan participations serviced for others and loans serviced for others based on class of receivable as of the dates indicated: September 30, 2018 December 31, 2017 (In thousands) Commercial and industrial $ 8,085 $ 8,484 Commercial tax-exempt 19,242 19,805 Commercial real estate 49,005 49,783 Construction and land 33,425 37,840 Total loan participations serviced for others $ 109,757 $ 115,912 Residential $ 36,634 $ 41,440 Total loans serviced for others $ 36,634 $ 41,440

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2018
Allowance for Loan Losses [Abstract]
Allowance for Credit Losses on Financing Receivables [Table Text Block]	The following table presents a summary of the changes in the allowance for loan losses for the periods indicated: As of and for the three months ended September 30, As of and for the nine months ended September 30, 2018 2017 2018 2017 (In thousands) Allowance for loan losses, beginning of period: Commercial and industrial $ 12,381 $ 11,672 $ 11,735 $ 12,751 Commercial real estate 45,183 48,136 46,820 50,412 Construction and land 4,613 3,585 4,949 3,039 Residential 9,804 10,282 9,773 10,449 Home equity 1,336 929 835 1,035 Consumer and other 147 405 630 391 Total allowance for loan losses, beginning of period 73,464 75,009 74,742 78,077 Loans charged-off: Commercial and industrial — — (339 ) (218 ) Commercial real estate — — (135 ) — Construction and land — — — — Residential — — (16 ) (58 ) Home equity — — — — Consumer and other — (38 ) (39 ) (283 ) Total charge-offs — (38 ) (529 ) (559 ) Recoveries on loans previously charged-off: Commercial and industrial 153 241 387 395 Commercial real estate 820 76 995 3,605 Construction and land — 13 — 13 Residential — — 27 47 Home equity — — 1 — Consumer and other 12 4 168 22 Total recoveries 985 334 1,578 4,082 Provision/ (credit) for loan losses: Commercial and industrial 1,921 973 2,672 (42 ) Commercial real estate (3,179 ) (1,173 ) (4,856 ) (6,978 ) Construction and land 172 182 (164 ) 728 Residential 144 (431 ) 164 (587 ) Home equity 6 (15 ) 506 (121 ) Consumer and other (13 ) 32 (613 ) 273 Total provision/(credit) for loan losses (949 ) (432 ) (2,291 ) (6,727 ) Allowance for loan losses at end of period: Commercial and industrial 14,455 12,886 14,455 12,886 Commercial real estate 42,824 47,039 42,824 47,039 Construction and land 4,785 3,780 4,785 3,780 Residential 9,948 9,851 9,948 9,851 Home equity 1,342 914 1,342 914 Consumer and other 146 403 146 403 Total allowance for loan losses at end of period $ 73,500 $ 74,873 $ 73,500 $ 74,873
Allowance by method of impairment analysis [Table Text Block]	The following tables present the Company’s allowance for loan losses and loan portfolio at September 30, 2018 and December 31, 2017 by portfolio segment, disaggregated by method of impairment analysis. The Company had no loans acquired with deteriorated credit quality at September 30, 2018 or December 31, 2017 . September 30, 2018 Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Recorded investment (loan balance) Allowance for loan losses Recorded investment (loan balance) Allowance for loan losses Recorded investment (loan balance) Allowance for loan losses (In thousands) Commercial and industrial $ 2,785 $ 577 $ 1,019,236 $ 13,878 $ 1,022,021 $ 14,455 Commercial real estate 1,625 — 2,397,455 42,824 2,399,080 42,824 Construction and land — — 197,524 4,785 197,524 4,785 Residential 7,779 74 2,855,100 9,874 2,862,879 9,948 Home equity 1,769 596 91,621 746 93,390 1,342 Consumer and other — — 145,526 146 145,526 146 Total $ 13,958 $ 1,247 $ 6,706,462 $ 72,253 $ 6,720,420 $ 73,500 December 31, 2017 Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Recorded investment (loan balance) Allowance for loan losses Recorded investment (loan balance) Allowance for loan losses Recorded investment (loan balance) Allowance for loan losses (In thousands) Commercial and industrial $ 1,676 $ 58 $ 938,014 $ 11,677 $ 939,690 $ 11,735 Commercial real estate 8,687 362 2,431,533 46,458 2,440,220 46,820 Construction and land 109 — 164,881 4,949 164,990 4,949 Residential 10,165 89 2,672,368 9,684 2,682,533 9,773 Home equity 1,815 20 98,143 815 99,958 835 Consumer and other 125 125 177,512 505 177,637 630 Total $ 22,577 $ 654 $ 6,482,451 $ 74,088 $ 6,505,028 $ 74,742

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	The following table presents the fair value of the Company’s derivative financial instruments as well as their classification on the consolidated balance sheets as of September 30, 2018 and December 31, 2017 : September 30, 2018 December 31, 2017 Asset derivatives Liability derivatives Asset derivatives Liability derivatives Balance sheet location Fair value (1) Balance sheet location Fair value (1) Balance sheet location Fair value (1) Balance sheet location Fair value (1) (In thousands) Derivatives designated as hedging instruments: Interest rate products Other assets $ 903 Other liabilities $ — Other assets $ 555 Other $ (80 ) Derivatives not designated as hedging instruments: Interest rate products Other assets 27,792 Other liabilities (28,209 ) Other assets 18,575 Other (18,953 ) Foreign exchange contracts Other assets — Other — Other assets 2 Other (2 ) Risk participation agreements Other assets 20 Other liabilities (90 ) Other assets 1 Other liabilities (108 ) Total $ 28,715 $ (28,299 ) $ 19,133 $ (19,143 ) _____________________ (1) For additional details, see Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 5: Fair Value Measurements.”
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]	The following tables present the effect of the Company’s derivative financial instruments on accumulated other comprehensive income for the three and nine months ended September 30, 2018 and 2017 : Derivatives in cash flow hedging relationships Amount of gain or (loss) recognized in OCI on derivatives (1) Location of (gain) or loss reclassified from accumulated OCI into income Amount of (gain) or loss reclassified from accumulated OCI into income Three months ended September 30, Three months ended September 30, 2018 2017 2018 2017 (In thousands) (In thousands) Interest rate products $ (193 ) $ 121 Interest expense $ (101 ) $ (293 ) Total $ (193 ) $ 121 $ (101 ) $ (293 ) ____________________ (1) There was an additional $(1) thousand loss related to the ineffective portion for the three months ended as of September 30, 2017 . Derivatives in cash Amount of gain or (loss) recognized in OCI on derivatives (1) Location of (gain) Amount of (gain) or loss reclassified from accumulated OCI into income Nine months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (In thousands) (In thousands) Interest rate products $ 818 $ (237 ) Interest expense $ (385 ) $ (953 ) Total $ 818 $ (237 ) $ (385 ) $ (953 ) ____________________ (1) There was an additional $(3) thousand loss related to the ineffective portion for the nine months ended as of September 30, 2017 . The guidance in ASU 2017-12 requires that amounts in accumulated other comprehensive income that are included in the assessment of effectiveness should be reclassified into earnings in the same period in which the hedged forecasted transactions impact earnings. Transition guidance for this ASU further states that upon adoption, previously recorded cumulative ineffectiveness for cash flow hedges existing at the adoption date be eliminated by means of a cumulative-effect adjustment to accumulated other comprehensive income with a corresponding adjustment to the opening balance of retained earnings as of the initial application date. There was a $5 thousand reclassification related to the adoption of ASU 2017-12 effective January 1, 2018.
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]	The following table presents the effect of the Company’s derivative financial instruments in the consolidated statements of operations for the three and nine months ended September 30, 2018 and 2017 : Location of (gain) or Amount of (gain) or Amount of (gain) or loss recognized in income on cash flow hedging relationships Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (In thousands) Total amounts of (income) and expense line items presented in the statement of operations in which the effects of fair value or cash flow hedges are recorded Interest expense $ (101 ) n/a $ (385 ) n/a The effects of cash flow hedging: (Gain) or loss on cash flow hedging relationships in ASC 815 Derivatives and Hedging, Subtopic 20 Hedging - general Interest contracts - amount of (gain) or loss reclassified from accumulated other comprehensive income into income Interest expense $ (101 ) n/a $ (385 ) n/a
Derivatives Not Designated as Hedging Instruments [Table Text Block]	The following table presents the effect of the Bank’s derivative financial instruments not designated as hedging instruments in the consolidated statement of operations for the three and nine months ended September 30, 2018 and 2017 . Amount of gain or (loss), net, recognized in income on derivatives Derivatives not designated as hedging instruments Location of gain or (loss) recognized in income on derivatives Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (In thousands) Interest rate products Other income/ (expense) $ 8 $ (49 ) $ (39 ) $ (695 ) Risk participation agreements Other income/ (expense) 18 5 238 325 Total $ 26 $ (44 ) $ 199 $ (370 )

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	The following table presents the components of income tax expense for continuing operations, discontinued operations, noncontrolling interests and the Company: Nine months ended September 30, 2018 2017 (In thousands) Income from continuing operations: Income before income taxes $ 77,214 $ 82,985 Income tax expense 28,886 24,805 Net income from continuing operations $ 48,328 $ 58,180 Effective tax rate, continuing operations 37.4 % 29.9 % Income from discontinued operations: Income before income taxes $ 2,388 $ 6,631 Income tax expense 692 2,750 Net income from discontinued operations $ 1,696 $ 3,881 Effective tax rate, discontinued operations 29.0 % 41.5 % Less: Income attributable to noncontrolling interests: Income before income taxes $ 2,942 $ 3,190 Income tax expense — — Net income attributable to noncontrolling interests $ 2,942 $ 3,190 Effective tax rate, noncontrolling interests — % — % Income attributable to the Company Income before income taxes $ 76,660 $ 86,426 Income tax expense 29,578 27,555 Net income attributable to the Company $ 47,082 $ 58,871 Effective tax rate attributable to the Company 38.6 % 31.9 %

Noncontrolling Interests (Table

Noncontrolling Interests (Tables)	9 Months Ended
	Sep. 30, 2018
Noncontrolling Interest [Abstract]
Redeemable Noncontrolling Interest [Table Text Block]	The following table presents, by affiliate, the noncontrolling interests included as redeemable noncontrolling interests and noncontrolling interests in mezzanine and permanent equity, respectively, at the periods indicated: September 30, 2018 December 31, 2017 (In thousands) Anchor (1) $ — $ 9,761 BOS 8,675 8,057 DGHM (2) 5,220 4,829 Total $ 13,895 $ 22,647 Redeemable noncontrolling interests $ 11,686 $ 17,461 Noncontrolling interests $ 2,209 $ 5,186 _____________________ (1) Assets and liabilities at Anchor were classified as held for sale on the Company’s consolidated balance sheets at December 31, 2017. The Company completed the sale of Anchor in April 2018. (2) Only includes redeemable noncontrolling interests.
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block]	The following tables present a rollforward of the Company’s redeemable noncontrolling interests and noncontrolling interests for the periods indicated: Three months ended Nine months ended September 30, 2018 September 30, 2018 Redeemable noncontrolling interests Noncontrolling interests Redeemable noncontrolling interests Noncontrolling interests (In thousands) Noncontrolling interests at beginning of period $ 10,747 $ 1,996 $ 17,461 $ 5,186 Net income attributable to noncontrolling interests 711 213 2,202 740 Distributions (687 ) (203 ) (2,136 ) (712 ) Purchases/ (sales) of ownership interests — — (6,353 ) (3,051 ) Amortization of equity compensation 125 — 373 161 Adjustments to fair value 790 203 139 (115 ) Noncontrolling interests at end of period $ 11,686 $ 2,209 $ 11,686 $ 2,209 Three months ended Nine months ended September 30, 2017 September 30, 2017 Redeemable noncontrolling interests Noncontrolling interests Redeemable noncontrolling interests Noncontrolling interests (In thousands) Noncontrolling interests at beginning of period $ 17,216 $ 4,375 $ 16,972 $ 4,161 Net income attributable to noncontrolling interests 802 272 2,385 805 Distributions (869 ) (264 ) (2,414 ) (783 ) Purchases/ (sales) of ownership interests 103 85 235 85 Amortization of equity compensation 102 250 306 756 Adjustments to fair value (1,472 ) 74 (1,602 ) (232 ) Noncontrolling interests at end of period $ 15,882 $ 4,792 $ 15,882 $ 4,792

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2018
Accumulated Other Comprehensive Income [Abstract]
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	The following table presents a summary of the amounts reclassified from accumulated other comprehensive income/ (loss) for the three and nine months ended September 30, 2018 and 2017 : Description of component of accumulated other comprehensive income/ (loss) Three months ended September 30, Nine months ended September 30, Affected line item in Statement of Operations 2018 2017 2018 2017 (In thousands) (In thousands) Adjustment for realized (gains)/ losses on available-for-sale securities, net: Pre-tax $ — $ (230 ) $ — $ (486 ) (Gain)/ loss on sale of investments, net Tax expense/ (benefit) — 89 — 193 Income tax expense/ (benefit) Net $ — $ (141 ) $ — $ (293 ) Net (income)/ loss attributable to the Company Net realized (gain)/ loss on cash flow hedges: Hedges related to deposits and borrowings: Pre-tax $ (101 ) $ 293 $ (385 ) $ 953 Interest (income)/ expense on deposits and borrowings Pre-tax — 2 — 3 Other (income)/ expense Tax expense/ (benefit) 29 (123 ) 112 (398 ) Income tax expense/ (benefit) Net $ (72 ) $ 172 $ (273 ) $ 558 Net (income)/ loss attributable to the Company Total reclassifications for the period, net of tax $ (72 ) $ 31 $ (273 ) $ 265
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	On January 1, 2018, the Company elected to early adopt ASU No. 2017-12. As a result, the Company reclassified unrealized losses on cash flow hedges of $5 thousand from accumulated other comprehensive income/ (loss) to beginning retained earnings. On January 1, 2018, the Company adopted ASU No. 2016-01. As a result, the Company reclassified unrealized gains on equity securities available-for-sale, net of tax, of $339 thousand from accumulated other comprehensive income/ (loss) to beginning retained earnings. Components of accumulated other comprehensive income/ (loss) Unrealized gain/ (loss) on securities available-for-sale Unrealized gain/ (loss) on cash flow hedges Unrealized gain/ (loss) on other Accumulated other comprehensive income/ (loss) (In thousands) Balance at December 31, 2016 $ (11,194 ) $ (605 ) $ (749 ) $ (12,548 ) Other comprehensive income/ (loss) before reclassifications 7,588 (140 ) 12 7,460 Amounts reclassified from other comprehensive income/ (loss) (293 ) 558 — 265 Other comprehensive income/ (loss), net 7,295 418 12 7,725 Balance at September 30, 2017 $ (3,899 ) $ (187 ) $ (737 ) $ (4,823 ) Balance at December 31, 2017 $ (8,140 ) $ 332 $ (850 ) $ (8,658 ) Other comprehensive income/ (loss) before reclassifications (18,888 ) 574 1 (18,313 ) Amounts reclassified from other comprehensive income/ (loss) — (273 ) — (273 ) Other comprehensive income/ (loss), net (18,888 ) 301 1 (18,586 ) Reclassification due to the adoption of ASUs 2017-12 and 2016-01 (339 ) 5 — (334 ) Balance at September 30, 2018 $ (27,367 ) $ 638 $ (849 ) $ (27,578 )

Restructuring (Tables)

Restructuring (Tables)	9 Months Ended
	Sep. 30, 2018
Restructuring and Related Activities [Abstract]
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	The following table presents a summary of the restructuring activity for the three and nine months ended September 30, 2018 and 2017 : Total (1) (In thousands) Accrued charges at December 31, 2017 $ 337 Costs paid (254 ) Accrued charges at March 31, 2018 83 Costs paid (83 ) Accrued charges at June 30, 2018 — Costs incurred 5,763 Costs paid — Accrued charges at September 30, 2018 $ 5,763 Accrued charges at December 31, 2016 $ 1,977 Costs paid (618 ) Accrued charges at March 31, 2017 1,359 Costs paid (335 ) Accrued charges at June 30, 2017 1,024 Costs paid (410 ) Accrued charges at September 30, 2017 $ 614 _____________________ (1) Restructuring charges consist solely of severance costs for all periods presented.

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Disposal Group, Including Discontinued Operation, Assets, Current						$ 58,800
Disposal Group, Including Discontinued Operation, Liabilities, Current						$ 3,200
Cumulative Effect of New Accounting Principle in Period of Adoption					$ (5)
Reclassification due to change in accounting principles			$ 0
Accounting Standards Update 2017-12 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption					(5)
Accounting Standards Update 2017-07 [Member]
Prior Period Reclassification Adjustment		$ 256		$ 597
Reclassification due to change in accounting principles	$ 131		$ 411
Accounting Standards Update 2016-01 [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption					$ 339

Earnings Per Share Basic Earnin

Earnings Per Share Basic Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income from continuing operations		$ 18,886	$ 19,691	$ 48,328	$ 58,180
Less: Net Income (Loss) Attributable to Noncontrolling Interest		924	1,074	2,942	3,190
Net Income (Loss) from Continuing Operations Attributable to Parent		17,962	18,617	45,386	54,990
Decrease/ (increase) in noncontrolling interests' redemption values (1)	[1]	(829)	(278)	(391)	(283)
Dividends on preferred stock (2)	[2]	0	868	3,985	2,606
Total adjustments to income attributable to common shareholders		829	1,146	4,376	2,889
Net income from continuing operations attributable to common shareholders, treasury stock method		17,133	17,471	41,010	52,101
Net income from discontinued operations		0	1,186	1,696	3,881
Net income attributable to common shareholders, treasury stock method		$ 17,133	$ 18,657	$ 42,706	$ 55,982
Income (Loss) from Continuing Operations, Per Basic Share		$ 0.20	$ 0.21	$ 0.49	$ 0.63
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share		0	0.01	0.02	0.05
Earnings Per Share, Basic		$ 0.20	$ 0.23	$ 0.51	$ 0.68
Series D Preferred Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Total adjustments to income attributable to common shareholders		$ 2,200
Preferred Stock Redemption Premium				$ 2,200
Common Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted Average Basic Common Shares Outstanding		84,017,284	82,556,225	83,544,754	82,270,849
[1]	See Part II. Item 8. “Financial Statements and Supplementary Data - Note 14: Noncontrolling Interests” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 for a description of the redemption values related to the redeemable noncontrolling interests. In accordance with the FASB Accounting Standards Codification (“ASC”) 480, Distinguishing Liabilities from Equity (“ASC 480”), an increase in redemption value from period to period reduces income attributable to common shareholders. Decreases in redemption value from period to period increase income attributable to common shareholders, but only to the extent that the cumulative change in redemption value remains a cumulative increase since adoption of this standard in the first quarter of 2009.
[2]	Consideration paid in excess of carrying value for the redemption of the 6.95% Non-Cumulative Perpetual Preferred Stock, Series D (“the Series D preferred stock”) of $2.2 million is considered a deemed dividend and, for purposes of calculating EPS, reduces net income attributable to common shareholders for the three and nine months ended September 30, 2018.

Earnings Per Share Diluted Earn

Earnings Per Share Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income from continuing operations attributable to common shareholders, after assumed dilution		$ 17,133	$ 17,471	$ 41,010	$ 52,101
Net income from discontinued operations		0	1,186	1,696	3,881
Net income attributable to common shareholders, after assumed dilution		$ 17,133	$ 18,657	$ 42,706	$ 55,982
Income (Loss) from Continuing Operations, Per Diluted Share		$ 0.20	$ 0.21	$ 0.48	$ 0.61
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share		0	0.01	0.02	0.05
Earnings Per Share, Diluted		0.20	0.22	0.50	0.66
Common Stock, Dividends, Per Share, Cash Paid		$ 0.12	$ 0.11	$ 0.36	$ 0.33
Common Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted Average Basic Common Shares Outstanding		84,017,284	82,556,225	83,544,754	82,270,849
Stock options, performance-based and time-based restricted stock, and performance-based and time-based restricted stock units, and other dilutive securities (3)	[1]	853,906	1,233,888	1,052,855	1,333,830
Warrants to purchase common stock (3)	[1]	627,378	1,098,198	656,686	1,136,493
Dilutive common shares		1,481,284	2,332,086	1,709,541	2,470,323
Weighted average diluted common shares outstanding (3)	[1]	85,498,568	84,888,311	85,254,295	84,741,172
[1]	The diluted EPS computations for the three and nine months ended September 30, 2018 and 2017 do not assume the conversion, exercise, or contingent issuance of the following shares for the following periods because the result would have been anti-dilutive for the periods indicated. As a result of the anti-dilution, the potential common shares excluded from the diluted EPS computation are as follows: Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017Shares excluded due to exercise price exceeding the average market price of common shares during the period (total outstanding):(In thousands)Potential common shares from: Stock options408 48 226 74Total shares excluded due to exercise price exceeding the average market price of common shares during the period408 48 226 74

Earnings Per Share Securities E

Earnings Per Share Securities Excluded Due to Exercise Price Exceeding Average Price During Period (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Shares Excluded Due to Exercise Price Exceeding Average Price During Period [Line Items]
Shares Excluded Due to Exercise Price Exceeding Average Price During Period	408	48	226	74
Outstanding Stock Awards [Member]
Shares Excluded Due to Exercise Price Exceeding Average Price During Period [Line Items]
Shares Excluded Due to Exercise Price Exceeding Average Price During Period	408	48	226	74

Reportable Segments (Details)

Reportable Segments (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		$ 59,641	$ 56,627	$ 174,569	$ 167,414
Total fees and other income		32,314	40,267	104,152	114,791
Revenues		91,955	96,894	278,721	282,205
Provision/ (credit) for loan losses		(949)	(432)	(2,291)	(6,727)
Noninterest Expense		68,557	69,346	203,798	205,947
Income before income taxes		24,347	27,980	77,214	82,985
Income tax expense		5,461	8,289	28,886	24,805
Net income from continuing operations		18,886	19,691	48,328	58,180
Net Income (Loss) Attributable to Noncontrolling Interest		924	1,074	2,942	3,190
Net income from discontinued operations		0	1,186	1,696	3,881
Net income attributable to the Company		17,962	19,803	47,082	58,871
Total assets		8,375,840	8,269,398	8,375,840	8,269,398	$ 8,311,744
Amortization of intangibles		750	1,426	2,249	4,278
Depreciation		2,916	2,060	7,579	6,040
Private Banking Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		60,551	57,295	177,129	169,334
Total fees and other income		3,337	3,720	8,637	8,182
Revenues		63,888	61,015	185,766	177,516
Provision/ (credit) for loan losses		(949)	(432)	(2,291)	(6,727)
Noninterest Expense		44,706	38,482	124,003	110,444
Income before income taxes		20,131	22,965	64,054	73,799
Income tax expense		4,469	6,634	13,063	22,112
Net income from continuing operations		15,662	16,331	50,991	51,687
Net income attributable to the Company		15,662	16,331	50,991	51,687
Total assets		8,292,901	8,113,836	8,292,901	8,113,836
Depreciation		2,398	1,431	6,013	4,145
Wealth Management and Trust Segment [Member]
Segment Reporting Information [Line Items]
Total fees and other income		11,636	11,739	35,203	33,934
Noninterest Expense		10,905	11,752	32,657	37,562
Income before income taxes		731	(13)	2,546	(3,628)
Income tax expense		220	(125)	729	(1,530)
Net income from continuing operations		511	112	1,817	(2,098)
Net income attributable to the Company		511	112	1,817	(2,098)
Total assets		79,473	73,511	79,473	73,511
Amortization of intangibles		701	727	2,103	2,181
Depreciation		328	330	983	1,008
Investment Managers Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net	[1]	0	8	6	16
Total fees and other income	[1]	3,245	11,280	18,887	33,230
Revenues	[1]	3,245	11,288	18,893	33,246
Noninterest Expense	[1]	2,235	8,407	13,880	25,107
Income before income taxes	[1]	1,010	2,881	5,013	8,139
Income tax expense	[1]	222	981	1,142	2,719
Net income from continuing operations	[1]	788	1,900	3,871	5,420
Net Income (Loss) Attributable to Noncontrolling Interest	[1]	188	451	878	1,425
Net income attributable to the Company	[1]	600	1,449	2,993	3,995
Total assets	[1]	7,496	93,910	7,496	93,910
Amortization of intangibles	[1]	0	650	0	1,951
Depreciation	[1]	29	62	95	189
Wealth Advisors Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		99	36	224	82
Total fees and other income		14,022	13,299	41,278	39,122
Revenues		14,121	13,335	41,502	39,204
Noninterest Expense		9,510	9,174	29,273	27,560
Income before income taxes		4,611	4,161	12,229	11,644
Income tax expense		1,242	1,562	3,242	4,360
Net income from continuing operations		3,369	2,599	8,987	7,284
Net Income (Loss) Attributable to Noncontrolling Interest		736	623	2,064	1,765
Net income attributable to the Company		2,633	1,976	6,923	5,519
Total assets		79,907	77,289	79,907	77,289
Amortization of intangibles		49	49	146	146
Depreciation		161	237	488	698
Holding Company and Eliminations Segment [Member]
Segment Reporting Information [Line Items]
Interest Income (Expense), Net		(1,009)	(711)	(2,790)	(2,018)
Total fees and other income		74	229	147	323
Revenues		(935)	(482)	(2,643)	(1,695)
Noninterest Expense		1,201	1,531	3,985	5,274
Income before income taxes		(2,136)	(2,013)	(6,628)	(6,969)
Income tax expense	[2]	(692)	(763)	10,710	(2,856)
Net income from continuing operations		(1,444)	(1,250)	(17,338)	(4,113)
Net income from discontinued operations		0	1,186	1,696	3,881
Net income attributable to the Company		(1,444)	(64)	(15,642)	(232)
Total assets		$ (83,937)	$ (89,148)	$ (83,937)	$ (89,148)
[1]	Results for the Investment Management segment for the three and nine months ended September 30, 2017 include results for DGHM and Anchor. Results for the Investment Management segment for the nine months ended September 30, 2018 include results for DGHM and results for Anchor through its sale date in April 2018. Assets for the Investment Management segment at September 30, 2017 include assets of DGHM and Anchor. Assets for the Investment Management segment at September 30, 2018 include assets of DGHM.
[2]	Income tax expense/ (benefit) for the nine months ended September 30, 2018 include $12.7 million in additional expense related to the sale of Anchor in April 2018.

Reportable Segments Segments Te

Reportable Segments Segments Text Disclosure (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)segments
Segment Reporting Information [Line Items]
Number of Reportable Segments | segments	4
Income tax expense/ (benefit) related to sale of affiliate | $	$ 12.7

Investments Schedule of Availab

Investments Schedule of Available-for-sale and Held-to-Maturity Securities (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost Basis		$ 1,101,756	$ 1,182,427
Available-for-sale Securities, Gross Unrealized Gains		1,338	5,072
Available-for-sale Securities, Gross Unrealized Losses		(39,754)	(17,171)
Available-for-sale securities at fair value		1,063,340	1,170,328
Debt Securities, Held-to-maturity		75,468	74,576
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain		0	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss		(2,541)	(795)
Debt Securities, Held-to-maturity, Fair Value		72,927	73,781
US Government and Government Agencies and Authorities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost Basis		35,025	35,132
Available-for-sale Securities, Gross Unrealized Gains		0	0
Available-for-sale Securities, Gross Unrealized Losses		(1,526)	(833)
Available-for-sale securities at fair value		33,499	34,299
Debt Securities, Held-to-maturity		11,964
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain		0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss		(1)
Debt Securities, Held-to-maturity, Fair Value		11,963
US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost Basis		275,767	305,101
Available-for-sale Securities, Gross Unrealized Gains		0	22
Available-for-sale Securities, Gross Unrealized Losses		(6,942)	(2,622)
Available-for-sale securities at fair value		268,825	302,501
Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost Basis		304,473	299,647
Available-for-sale Securities, Gross Unrealized Gains		1,130	4,559
Available-for-sale Securities, Gross Unrealized Losses		(5,614)	(1,148)
Available-for-sale securities at fair value		299,989	303,058
Mortgage Backed Securities, Other [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost Basis	[1]	479,412	521,753
Available-for-sale Securities, Gross Unrealized Gains	[1]	208	491
Available-for-sale Securities, Gross Unrealized Losses	[1]	(25,672)	(12,568)
Available-for-sale securities at fair value	[1]	453,948	509,676
Debt Securities, Held-to-maturity	[1]	63,504	74,576
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	[1]	0	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	[1]	(2,540)	(795)
Debt Securities, Held-to-maturity, Fair Value	[1]	60,964	73,781
Other Aggregated Investments [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost Basis	[2]	7,079	20,794
Available-for-sale Securities, Gross Unrealized Gains	[2]	0	0
Available-for-sale Securities, Gross Unrealized Losses	[2]	0	0
Available-for-sale securities at fair value	[2]	$ 7,079	$ 20,794
[1]	All mortgage-backed securities are guaranteed by the U.S. government, U.S. government agencies, or government-sponsored entities.
[2]	Included in Other available-for-sale securities as of September 30, 2018 and December 31, 2017 are primarily money market mutual fund securities.

Investments Maturities of AFS S

Investments Maturities of AFS Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	$ 106,582
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	295,910
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	294,991
Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost	404,273
Investment securities available for sale at amortized cost	1,101,756	$ 1,182,427
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	106,168
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value	288,004
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	279,099
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value	390,069
Available-for-sale Securities	$ 1,063,340	$ 1,170,328

Investments Maturities of HTM S

Investments Maturities of HTM Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	$ 11,964
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	0
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	41,413
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Amortized Cost	22,091
Debt Securities, Held-to-maturity	75,468	$ 74,576
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	11,963
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value	0
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	39,807
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value	21,157
Debt Securities, Held-to-maturity, Fair Value	$ 72,927	$ 73,781

Investments Realized gains and

Investments Realized gains and losses from sales of AFS Investments (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018
Gain (Loss) on Securities [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption						$ (5)
Proceeds from Sale of Available-for-sale Securities	[1]	$ 16,231	$ 16,207	$ 51,781	$ 119,238
Available-for-sale Securities, Gross Realized Gains		0	235	7	509
Available-for-sale Securities, Gross Realized Losses		0	(5)	(1)	(23)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax		0		(23)
Proceeds from Sale of Other Investments		$ 16,200	$ 8,200	$ 51,800	$ 53,600
Accounting Standards Update 2016-01 [Member]
Gain (Loss) on Securities [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption						339
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Accounting Standards Update 2016-01 [Member]
Gain (Loss) on Securities [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption						$ 339
[1]	Included in Proceeds from sales are proceeds from the sale of money market mutual funds of $16.2 million and $51.8 million for the three and nine months ended September 30, 2018, respectively and $8.2 million and $53.6 million for the three and nine months ended September 30, 2017, respectively. Money market mutual funds maintain a constant net asset value of $1.00 and therefore have no realized gain or loss when sold.

Investments Investment Securiti

Investments Investment Securities in Unrealized Loss Position (Details) $ in Thousands	Sep. 30, 2018USD ($)securities		Dec. 31, 2017USD ($)securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 355,308		$ 378,406
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(5,727)		(2,463)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	628,193		495,297
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(34,027)		(14,708)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	983,501		873,703
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	$ 39,754		$ 17,171
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | securities	280		208
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 20,829		$ 59,218
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(308)		(534)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	52,098		14,563
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2,233)		(261)
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	72,927		73,781
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	$ (2,541)		$ (795)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | securities	18		16
US Government and Government Agencies and Authorities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 4,966		$ 14,902
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(31)		(79)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	28,533		19,397
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(1,495)		(754)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	33,499		34,299
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	$ 1,526		$ 833
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | securities	6		6
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 11,963
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	11,963
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	$ (1)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | securities	2
US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 127,616		$ 220,275
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(1,937)		(1,350)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	141,209		38,273
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(5,005)		(1,272)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	268,825		258,548
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	$ 6,942		$ 2,622
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | securities	40		36
Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 192,479		$ 46,112
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(2,799)		(131)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	47,750		50,842
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(2,815)		(1,017)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	240,229		96,954
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	$ 5,614		$ 1,148
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | securities	124		63
Mortgage Backed Securities, Other [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 30,247	[1]	$ 97,117	[2]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(960)	[1]	(903)	[2]
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	410,701	[1]	386,785	[2]
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(24,712)	[1]	(11,665)	[2]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	440,948	[1]	483,902	[2]
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	$ 25,672	[1]	$ 12,568	[2]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | securities	110	[1]	103	[2]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 8,866	[1]	$ 59,218	[2]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(307)	[1]	(534)	[2]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	52,098	[1]	14,563	[2]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2,233)	[1]	(261)	[2]
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	60,964	[1]	73,781	[2]
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	$ (2,540)	[1]	$ (795)	[2]
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | securities	16	[1]	16	[2]
[1]	All mortgage-backed securities are guaranteed by the U.S. government, U.S. government agencies, or government-sponsored entities.
[2]	All mortgage-backed securities are guaranteed by the U.S. government, U.S. government agencies, or government-sponsored entities.

Investments Other Investment Di

Investments Other Investment Disclosures (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Investments, Other Disclosures [Abstract]
Cost Method Investments, Additional Information	0	0
Amortization Method Qualified Affordable Housing Project Investments	$ 55	$ 39.4

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value Recurring Basis (Details) - USD ($) $ in Thousands		Sep. 30, 2018		Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		$ 1,063,340		$ 1,170,328
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount		33,400		0
US Government and Government Agencies and Authorities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		33,499		34,299
US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		268,825		302,501
Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		299,989		303,058
Mortgage Backed Securities, Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	[1]	453,948		509,676
Other Aggregated Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	[2]	7,079		20,794
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		1,063,340		1,170,328
Alternative Investment	[3]	7,806		7,062
Financial and Nonfinancial Liabilities, Fair Value Disclosure	[3]	7,806		7,062
Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		903		555
Derivative Financial Instruments, Liabilities, Fair Value Disclosure				80
Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		27,792		18,575
Derivative Financial Instruments, Liabilities, Fair Value Disclosure		28,209		18,953
Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Loan Participations and Assignments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		20		1
Derivative Financial Instruments, Liabilities, Fair Value Disclosure		90		108
Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets				2
Derivative Financial Instruments, Liabilities, Fair Value Disclosure				2
Fair Value, Measurements, Recurring [Member] | US Government and Government Agencies and Authorities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		33,499		34,299
Fair Value, Measurements, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		268,825		302,501
Fair Value, Measurements, Recurring [Member] | Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		299,989		303,058
Fair Value, Measurements, Recurring [Member] | Mortgage Backed Securities, Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		453,948		509,676
Fair Value, Measurements, Recurring [Member] | Other Aggregated Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		7,079	[4]	20,794
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		7,079		54,890
Alternative Investment	[3]	7,806		7,062
Financial and Nonfinancial Liabilities, Fair Value Disclosure	[3]	7,806		7,062
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		0		0
Derivative Financial Instruments, Liabilities, Fair Value Disclosure				0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		0		0
Derivative Financial Instruments, Liabilities, Fair Value Disclosure		0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Not Designated as Hedging Instrument [Member] | Loan Participations and Assignments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		0		0
Derivative Financial Instruments, Liabilities, Fair Value Disclosure		0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets				0
Derivative Financial Instruments, Liabilities, Fair Value Disclosure				0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Government and Government Agencies and Authorities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0		34,096
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Mortgage Backed Securities, Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other Aggregated Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		7,079	[4]	20,794
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		1,056,261		1,115,438
Alternative Investment	[3]	0		0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	[3]	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		903		555
Derivative Financial Instruments, Liabilities, Fair Value Disclosure				80
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		27,792		18,575
Derivative Financial Instruments, Liabilities, Fair Value Disclosure		28,209		18,953
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Not Designated as Hedging Instrument [Member] | Loan Participations and Assignments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		20		1
Derivative Financial Instruments, Liabilities, Fair Value Disclosure		90		108
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets				2
Derivative Financial Instruments, Liabilities, Fair Value Disclosure				2
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Government and Government Agencies and Authorities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		33,499		203
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		268,825		302,501
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		299,989		303,058
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage Backed Securities, Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		453,948		509,676
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other Aggregated Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0	[4]	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0		0
Alternative Investment	[3]	0		0
Financial and Nonfinancial Liabilities, Fair Value Disclosure	[3]	0		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value		0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		0		0
Derivative Financial Instruments, Liabilities, Fair Value Disclosure				0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		0		0
Derivative Financial Instruments, Liabilities, Fair Value Disclosure		0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Not Designated as Hedging Instrument [Member] | Loan Participations and Assignments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		0		0
Derivative Financial Instruments, Liabilities, Fair Value Disclosure		0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets				0
Derivative Financial Instruments, Liabilities, Fair Value Disclosure				0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US Government and Government Agencies and Authorities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage Backed Securities, Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Aggregated Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0	[4]	0
Portion at Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount		$ 12,000		$ 0
[1]	All mortgage-backed securities are guaranteed by the U.S. government, U.S. government agencies, or government-sponsored entities.
[2]	Included in Other available-for-sale securities as of September 30, 2018 and December 31, 2017 are primarily money market mutual fund securities.
[3]	The Company has adopted a special trust for the Deferred Compensation Plan called a “rabbi trust.” The rabbi trust is an arrangement that is used to accumulate assets that may be used to fund the Company’s obligation to pay benefits under the Deferred Compensation Plan. To prevent immediate taxation to the executives who participate in the Deferred Compensation Plan, the amounts placed in the rabbi trust must remain subject to the claims of the Company’s creditors. The investments chosen by the participants in the Deferred Compensation Plan are mirrored by the rabbi trust as a way to minimize the earnings volatility of the Deferred Compensation Plan.
[4]	Other available-for-sale securities as of September 30, 2018 and December 31, 2017 consisted of primarily money market mutual fund securities.

Fair Value Measurements Fair _2

Fair Value Measurements Fair Value Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2018	[1]	Sep. 30, 2017	[2]	Sep. 30, 2018	[1]	Sep. 30, 2017	[2]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	$ 2,005		$ 1,978		$ 2,005		$ 1,978
Loans Receivable, Fair Value Adjustment	(440)		(255)		(1,367)		(474)
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	0		0		0		0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	0		0		0		0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	$ 2,005		$ 1,978		$ 2,005		$ 1,978
[1]	Collateral-dependent impaired loans held at September 30, 2018 that had write-downs in fair value or whose specific reserve changed during the first nine months of 2018.
[2]	Collateral-dependent impaired loans held at September 30, 2017 that had write-downs in fair value or whose specific reserve changed during the first nine months of 2017.

Fair Value Measurements Quantit

Fair Value Measurements Quantitiative Information about Level 3 Non-Recurring Assets (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018		Sep. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Loans Receivable, Fair Value Disclosure	$ 2,005	[1]	$ 1,978	[2]
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Loans Receivable, Fair Value Disclosure	$ 2,005	[1]	$ 1,978	[2]
Loans Receivable [Member] | Weighted Average [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair Value, non-recurring basis, weighted average unobservable input	6.00%		4.00%
Fair Value, non-recurring basis, weighted average appraisal adjustment	0.00%		17.00%
Loans Receivable [Member] | Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair Value, non-recurring basis, weighted average min discount rate	0.00%		0.00%
Fair Value, non-recurring basis, appraisal adj min rate	0.00%		0.00%
Loans Receivable [Member] | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fair Value, non-recurring basis, weighted average max discount rate	23.00%		7.00%
Fair Value, non-recurring basis, appraisal adj max rate	0.00%		51.00%
[1]	Collateral-dependent impaired loans held at September 30, 2018 that had write-downs in fair value or whose specific reserve changed during the first nine months of 2018.
[2]	Collateral-dependent impaired loans held at September 30, 2017 that had write-downs in fair value or whose specific reserve changed during the first nine months of 2017.

Fair Value Measurements Not Mea

Fair Value Measurements Not Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, Fair Value	$ 72,927	$ 73,781
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	33,400	0
Portion at Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	92,634	120,541
Debt Securities, Held-to-maturity, Fair Value	72,927	73,781
Loans Held-for-sale, Fair Value Disclosure	3,374	4,737
Loans Receivable, Fair Value Disclosure	6,542,225	6,388,297
Other Assets, Fair Value Disclosure	83,813	93,449
Deposits, Fair Value Disclosure	6,765,393	6,509,197
Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure	39,453	32,169
Federal Funds Purchased, Fair Value Disclosure	120,000	30,000
Federal Home Loan Bank Borrowings, Fair Value Disclosure	437,887	692,402
Subordinated Debt Obligations, Fair Value Disclosure	96,363	96,363
Other Liabilities, Fair Value Disclosure	2,964	2,224
Portion at Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	92,634	120,541
Debt Securities, Held-to-maturity, Fair Value	0	0
Loans Held-for-sale, Fair Value Disclosure	0	0
Loans Receivable, Fair Value Disclosure	0	0
Other Assets, Fair Value Disclosure	0	0
Deposits, Fair Value Disclosure	0	0
Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure	0	0
Federal Funds Purchased, Fair Value Disclosure	0	0
Federal Home Loan Bank Borrowings, Fair Value Disclosure	0	0
Subordinated Debt Obligations, Fair Value Disclosure	0	0
Other Liabilities, Fair Value Disclosure	0	0
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	12,000	0
Portion at Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Debt Securities, Held-to-maturity, Fair Value	72,927	73,781
Loans Held-for-sale, Fair Value Disclosure	3,374	4,737
Loans Receivable, Fair Value Disclosure	0	0
Other Assets, Fair Value Disclosure	83,813	93,449
Deposits, Fair Value Disclosure	6,765,393	6,509,197
Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure	39,453	32,169
Federal Funds Purchased, Fair Value Disclosure	120,000	30,000
Federal Home Loan Bank Borrowings, Fair Value Disclosure	437,887	692,402
Subordinated Debt Obligations, Fair Value Disclosure	0	0
Other Liabilities, Fair Value Disclosure	2,964	2,224
Portion at Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Debt Securities, Held-to-maturity, Fair Value	0	0
Loans Held-for-sale, Fair Value Disclosure	0	0
Loans Receivable, Fair Value Disclosure	6,542,225	6,388,297
Other Assets, Fair Value Disclosure	0	0
Deposits, Fair Value Disclosure	0	0
Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure	0	0
Federal Funds Purchased, Fair Value Disclosure	0	0
Federal Home Loan Bank Borrowings, Fair Value Disclosure	0	0
Subordinated Debt Obligations, Fair Value Disclosure	96,363	96,363
Other Liabilities, Fair Value Disclosure	0	0
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	92,634	120,541
Debt Securities, Held-to-maturity, Fair Value	75,468	74,576
Loans Held-for-sale, Fair Value Disclosure	3,344	4,697
Loans Receivable, Fair Value Disclosure		6,430,286
Other Assets, Fair Value Disclosure	83,813	93,449
Deposits, Fair Value Disclosure	6,768,723	6,510,246
Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure	39,453	32,169
Federal Funds Purchased, Fair Value Disclosure	120,000	30,000
Federal Home Loan Bank Borrowings, Fair Value Disclosure	441,836	693,681
Subordinated Debt Obligations, Fair Value Disclosure	106,363	106,363
Other Liabilities, Fair Value Disclosure	$ 2,964	$ 2,224

Fair Value Measurements Fair _3

Fair Value Measurements Fair Value Text (Details) $ in Millions	Dec. 31, 2017USD ($)
Portion at Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
US Government Securities, at Carrying Value	$ 0

Loan Portfolio and Credit Qua_3

Loan Portfolio and Credit Quality Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 6,720,420	$ 6,505,028
Commercial and industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	583,214	520,992
Commercial Tax Exempt [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	438,807	418,698
Commercial and Industrial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,022,021	939,690
Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,399,080	2,440,220
Construction and land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	197,524	164,990
Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,862,879	2,682,533
Home equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	93,390	99,958
Consumer and other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 145,526	$ 177,637

Loan Portfolio and Credit Qua_4

Loan Portfolio and Credit Quality Nonaccrual Loans by Class of Financing Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 12,097	$ 14,295
Commercial and industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	1,968	748
Commercial Tax Exempt [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Commercial and Industrial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	1,968	748
Commercial real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	546	1,985
Construction and land [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	110
Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	6,798	8,470
Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	2,773	2,840
Consumer and other [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 12	$ 142

Loan Portfolio and Credit Qua_5

Loan Portfolio and Credit Quality Loans by Past Due Status (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	$ 11,607	$ 25,048
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	12,097	14,295
Financing Receivable, Recorded Investment, Current	6,696,716	6,465,685
Total loans	6,720,420	6,505,028
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	2,875	22,564
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	8,732	2,484
Financing Receivables, 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	2,349	1,340
Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	250	3,368
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	9,498	9,587
Commercial and industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	4,331	11,752
Financing Receivable, Recorded Investment, Nonaccrual Status	1,968	748
Financing Receivable, Recorded Investment, Current	576,915	508,492
Total loans	583,214	520,992
Commercial and industrial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,645	10,903
Commercial and industrial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	2,686	849
Commercial and industrial [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	1,213	355
Commercial and industrial [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	43	0
Commercial and industrial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	712	393
Commercial Tax Exempt [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Financing Receivable, Recorded Investment, Current	438,807	418,698
Total loans	438,807	418,698
Commercial Tax Exempt [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Commercial Tax Exempt [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Commercial Tax Exempt [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Commercial Tax Exempt [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Commercial Tax Exempt [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Commercial real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	987	4,043
Financing Receivable, Recorded Investment, Nonaccrual Status	546	1,985
Financing Receivable, Recorded Investment, Current	2,397,547	2,434,192
Total loans	2,399,080	2,440,220
Commercial real estate [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	326	4,043
Commercial real estate [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	661	0
Commercial real estate [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	163
Commercial real estate [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Commercial real estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	546	1,822
Construction and land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	0	110
Financing Receivable, Recorded Investment, Current	197,524	164,880
Total loans	197,524	164,990
Construction and land [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Construction and land [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Construction and land [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Construction and land [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Construction and land [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	110
Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	4,518	8,874
Financing Receivable, Recorded Investment, Nonaccrual Status	6,798	8,470
Financing Receivable, Recorded Investment, Current	2,851,563	2,665,189
Total loans	2,862,879	2,682,533
Residential [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	7,239
Residential [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	4,518	1,635
Residential [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	1,134	805
Residential [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	197	3,172
Residential [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	5,467	4,493
Home equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,768	355
Financing Receivable, Recorded Investment, Nonaccrual Status	2,773	2,840
Financing Receivable, Recorded Investment, Current	88,849	96,763
Total loans	93,390	99,958
Home equity [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	901	355
Home equity [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	867	0
Home equity [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Home equity [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	71
Home equity [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	2,773	2,769
Consumer and other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	3	24
Financing Receivable, Recorded Investment, Nonaccrual Status	12	142
Financing Receivable, Recorded Investment, Current	145,511	177,471
Total loans	145,526	177,637
Consumer and other [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	3	24
Consumer and other [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Consumer and other [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	2	17
Consumer and other [Member] | Financing Receivables, 30 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	10	125
Consumer and other [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 0	$ 0

Loan Portfolio and Credit Qua_6

Loan Portfolio and Credit Quality Loans by Grade or Nonaccrual Status (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total loans		$ 6,720,420	$ 6,505,028
Pass [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		6,585,537	6,350,207
Special Mention [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		67,406	87,174
Substandard [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	[1]	55,380	53,352
Substandard [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		12,097	14,295
Commercial and industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		583,214	520,992
Commercial and industrial [Member] | Pass [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		548,827	496,395
Commercial and industrial [Member] | Special Mention [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		11,904	12,898
Commercial and industrial [Member] | Substandard [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	[1]	20,515	10,951
Commercial and industrial [Member] | Substandard [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		1,968	748
Commercial Tax Exempt [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		438,807	418,698
Commercial Tax Exempt [Member] | Pass [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		431,918	413,139
Commercial Tax Exempt [Member] | Special Mention [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		2,837	5,559
Commercial Tax Exempt [Member] | Substandard [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	[1]	4,052	0
Commercial Tax Exempt [Member] | Substandard [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		0	0
Commercial real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		2,399,080	2,440,220
Commercial real estate [Member] | Pass [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		2,322,294	2,346,833
Commercial real estate [Member] | Special Mention [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		47,195	56,947
Commercial real estate [Member] | Substandard [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	[1]	29,045	34,455
Commercial real estate [Member] | Substandard [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		546	1,985
Construction and land [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		197,524	164,990
Construction and land [Member] | Pass [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		191,608	146,514
Construction and land [Member] | Special Mention [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		5,470	11,770
Construction and land [Member] | Substandard [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	[1]	446	6,596
Construction and land [Member] | Substandard [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		0	110
Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		2,862,879	2,682,533
Residential [Member] | Pass [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		2,854,759	2,672,714
Residential [Member] | Special Mention [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		0	0
Residential [Member] | Substandard [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	[1]	1,322	1,349
Residential [Member] | Substandard [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		6,798	8,470
Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		93,390	99,958
Home equity [Member] | Pass [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		90,617	97,118
Home equity [Member] | Special Mention [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		0	0
Home equity [Member] | Substandard [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	[1]	0	0
Home equity [Member] | Substandard [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		2,773	2,840
Consumer and other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		145,526	177,637
Consumer and other [Member] | Pass [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		145,514	177,494
Consumer and other [Member] | Special Mention [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		0	0
Consumer and other [Member] | Substandard [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	[1]	0	1
Consumer and other [Member] | Substandard [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		$ 12	$ 142
[1]	Accruing Classified includes both Substandard and Doubtful classifications.

Loan Portfolio and Credit Qua_7

Loan Portfolio and Credit Quality Impaired Loans With and Without Related Allowance (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[1]	$ 9,872	$ 12,900	$ 9,872	$ 12,900	$ 14,491
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	4,086	8,745	4,086	8,745	8,086
Impaired Financing Receivable, Recorded Investment	[1]	13,958	21,645	13,958	21,645	22,577
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		12,506	17,432	12,506	17,432	17,288
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		4,088	9,175	4,088	9,175	8,640
Impaired Financing Receivable, Unpaid Principal Balance		16,594	26,607	16,594	26,607	25,928
Impaired Financing Receivable, Related Allowance		1,247	805	1,247	805	654
Impaired Financing Receivable, Related Allowance		1,247	805	1,247	805	654
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		14,245	13,603	15,293	15,560	15,311
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		7,173	9,315	7,165	10,047	9,651
Impaired Financing Receivable, Average Recorded Investment		21,418	22,918	22,458	25,607	24,962
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		762	223	1,063	1,477	2,036
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		486	95	731	329	416
Impaired Financing Receivable, Interest Income, Cash Basis Method		1,248	318	1,794	1,806	2,452
Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[1]	1,150	1,371	1,150	1,371	1,434
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	1,635	598	1,635	598	242
Impaired Financing Receivable, Recorded Investment	[1]	2,785	1,969	2,785	1,969	1,676
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		2,083	1,988	2,083	1,988	2,238
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		1,638	598	1,638	598	242
Impaired Financing Receivable, Unpaid Principal Balance		3,721	2,586	3,721	2,586	2,480
Impaired Financing Receivable, Related Allowance		577	242	577	242	58
Impaired Financing Receivable, Related Allowance		577	242	577	242	58
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		1,617	1,626	1,730	1,665	1,594
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		625	149	322	60	156
Impaired Financing Receivable, Average Recorded Investment		2,242	1,775	2,052	1,725	1,750
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		33	18	55	43	50
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		4	1	6	1	4
Impaired Financing Receivable, Interest Income, Cash Basis Method		37	19	61	44	54
Commercial Tax Exempt [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[1]	0	0	0	0	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	0	0	0	0	0
Impaired Financing Receivable, Recorded Investment	[1]	0	0	0	0	0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		0	0	0	0	0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		0	0	0	0	0
Impaired Financing Receivable, Unpaid Principal Balance		0	0	0	0	0
Impaired Financing Receivable, Related Allowance		0	0	0	0	0
Impaired Financing Receivable, Related Allowance		0	0	0	0	0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		0	0	0	1,301	1,001
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		0	0	0	0	0
Impaired Financing Receivable, Average Recorded Investment		0	0	0	1,301	1,001
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		0	0	0	80	80
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		0	0	0	0	0
Impaired Financing Receivable, Interest Income, Cash Basis Method		0	0	0	80	80
Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[1]	1,625	2,463	1,625	2,463	1,832
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	0	6,911	0	6,911	6,855
Impaired Financing Receivable, Recorded Investment	[1]	1,625	9,374	1,625	9,374	8,687
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		2,966	5,972	2,966	5,972	3,453
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		0	7,341	0	7,341	7,284
Impaired Financing Receivable, Unpaid Principal Balance		2,966	13,313	2,966	13,313	10,737
Impaired Financing Receivable, Related Allowance		0	415	0	415	362
Impaired Financing Receivable, Related Allowance		0	415	0	415	362
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		2,526	2,690	2,439	3,465	3,098
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		4,045	6,955	5,314	7,012	6,980
Impaired Financing Receivable, Average Recorded Investment		6,571	9,645	7,753	10,477	10,078
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		583	107	633	1,077	1,546
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		476	76	704	247	322
Impaired Financing Receivable, Interest Income, Cash Basis Method		1,059	183	1,337	1,324	1,868
Construction and land [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[1]	0	207	0	207	109
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	0	0	0	0	0
Impaired Financing Receivable, Recorded Investment	[1]	0	207	0	207	109
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		0	241	0	241	109
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		0	0	0	0	0
Impaired Financing Receivable, Unpaid Principal Balance		0	241	0	241	109
Impaired Financing Receivable, Related Allowance		0	0	0	0	0
Impaired Financing Receivable, Related Allowance		0	0	0	0	0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		0	218	66	191	172
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		0	0	0	0	0
Impaired Financing Receivable, Average Recorded Investment		0	218	66	191	172
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		0	0	16	0	0
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		0	0	0	0	0
Impaired Financing Receivable, Interest Income, Cash Basis Method		0	0	16	0	0
Residential [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[1]	7,097	8,859	7,097	8,859	9,337
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	682	1,200	682	1,200	828
Impaired Financing Receivable, Recorded Investment	[1]	7,779	10,059	7,779	10,059	10,165
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		7,457	9,231	7,457	9,231	9,709
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		681	1,200	681	1,200	828
Impaired Financing Receivable, Unpaid Principal Balance		8,138	10,431	8,138	10,431	10,537
Impaired Financing Receivable, Related Allowance		74	127	74	127	89
Impaired Financing Receivable, Related Allowance		74	127	74	127	89
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		10,102	9,069	10,002	8,938	9,033
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		734	2,175	787	2,938	2,469
Impaired Financing Receivable, Average Recorded Investment		10,836	11,244	10,789	11,876	11,502
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		146	98	335	277	360
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		5	18	17	80	89
Impaired Financing Receivable, Interest Income, Cash Basis Method		151	116	352	357	449
Home equity [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[1]	0	0	0	0	1,779
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	1,769	36	1,769	36	36
Impaired Financing Receivable, Recorded Investment	[1]	1,769	36	1,769	36	1,815
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		0	0	0	0	1,779
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		1,769	36	1,769	36	36
Impaired Financing Receivable, Unpaid Principal Balance		1,769	36	1,769	36	1,815
Impaired Financing Receivable, Related Allowance		596	21	596	21	20
Impaired Financing Receivable, Related Allowance		596	21	596	21	20
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		0	0	1,056	0	413
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		1,769	36	729	37	36
Impaired Financing Receivable, Average Recorded Investment		1,769	36	1,785	37	449
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		0	0	24	0	0
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		1	0	1	1	1
Impaired Financing Receivable, Interest Income, Cash Basis Method		1	0	25	1	1
Consumer and other [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[1]	0	0	0	0	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]	0	0	0	0	125
Impaired Financing Receivable, Recorded Investment	[1]	0	0	0	0	125
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		0	0	0	0	0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		0	0	0	0	250
Impaired Financing Receivable, Unpaid Principal Balance		0	0	0	0	250
Impaired Financing Receivable, Related Allowance		0	0	0	0	125
Impaired Financing Receivable, Related Allowance		0	0	0	0	125
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		0	0	0	0	0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		0	0	13	0	10
Impaired Financing Receivable, Average Recorded Investment		0	0	13	0	10
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method		0	0	0	0	0
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method		0	0	3	0	0
Impaired Financing Receivable, Interest Income, Cash Basis Method		$ 0	$ 0	$ 3	$ 0	$ 0
[1]	Recorded investment represents the client loan balance net of historical charge-offs and historical nonaccrual interest paid, if applicable, which was applied to principal.

Loan Portfolio and Credit Qua_8

Loan Portfolio and Credit Quality Loans Restructured in Current Quarter (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018USD ($)Loans	Sep. 30, 2017USD ($)Loans	Sep. 30, 2018USD ($)Loans		Sep. 30, 2017USD ($)Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Loans		1	1	2		1
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 2,072	$ 108	$ 2,172		$ 108
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 2,107	$ 109	$ 2,207		$ 109
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | Loans		0	0	0		0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 0	$ 0	$ 0		$ 0
Commercial and Industrial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Loans		0	0			0
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 0	$ 0			$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 0	$ 0			$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | Loans		0	0	0	[1]	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 0	$ 0	$ 0	[1]	$ 0
Commercial and Industrial Portfolio Segment [Member] | Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Loans	[1]			1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	[1]			$ 100
Financing Receivable, Modifications, Post-Modification Recorded Investment	[1]			$ 100
Commercial Tax Exempt [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Loans		0	0	0		0
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 0	$ 0	$ 0		$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 0	$ 0	$ 0		$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | Loans		0	0	0		0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 0	$ 0	$ 0		$ 0
Commercial real estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Loans		0	0	0		0
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 0	$ 0	$ 0		$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 0	$ 0	$ 0		$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | Loans		0	0	0		0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 0	$ 0	$ 0		$ 0
Construction and land [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Loans		0	0	0		0
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 0	$ 0	$ 0		$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 0	$ 0	$ 0		$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | Loans		0	0	0		0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 0	$ 0	$ 0		$ 0
Residential [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | Loans	[2]	0	0	0		0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	[2]	$ 0	$ 0	$ 0		$ 0
Residential [Member] | Contractual Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Loans	[2]	1	1	1		1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	[2]	$ 2,072	$ 108	$ 2,072		$ 108
Financing Receivable, Modifications, Post-Modification Recorded Investment	[2]	$ 2,107	$ 109	$ 2,107		$ 109
Home equity [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Loans		0	0	0		0
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 0	$ 0	$ 0		$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 0	$ 0	$ 0		$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | Loans		0	0	0		0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 0	$ 0	$ 0		$ 0
Consumer and other [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | Loans		0	0	0		0
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 0	$ 0	$ 0		$ 0
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 0	$ 0	$ 0		$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | Loans		0	0	0		0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 0	$ 0	$ 0		$ 0
[1]	Represents the following type of concession: extension of term.
[2]	Represents the following type of concession: temporary reduction of interest rate.

Loan Portfolio and Credit Qua_9

Loan Portfolio and Credit Quality Loan Participation Amounts (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Loan Participation Amounts by Loan Type [Line Items]
Loan Participation Serviced for Others Amount	$ 109,757	$ 115,912
Loan Serviced for Others Amount	36,634	41,440
Commercial and industrial [Member]
Loan Participation Amounts by Loan Type [Line Items]
Loan Participation Serviced for Others Amount	8,085	8,484
Commercial Tax Exempt [Member]
Loan Participation Amounts by Loan Type [Line Items]
Loan Participation Serviced for Others Amount	19,242	19,805
Commercial real estate [Member]
Loan Participation Amounts by Loan Type [Line Items]
Loan Participation Serviced for Others Amount	49,005	49,783
Construction and land [Member]
Loan Participation Amounts by Loan Type [Line Items]
Loan Participation Serviced for Others Amount	33,425	37,840
Residential [Member]
Loan Participation Amounts by Loan Type [Line Items]
Loan Serviced for Others Amount	$ 36,634	$ 41,440

Loan Portfolio and Credit Qu_10

Loan Portfolio and Credit Quality Loan footnote text disclosures (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	$ 0	$ 0
Loans Pledged in Blanket Lien Agreement	2,600,000
Loans Pledged as Collateral	570,100
Financing Receivable, Modifications, Recorded Investment	8,200	13,600	[1]
Loans and Leases Receivable, Deferred Income	7,600	6,900
Accruing Troubled Debt Restructured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 5,200	$ 11,100
[1]	Represents the following type of concession: temporary reduction of interest rate.

Allowance for Loan Losses Allow

Allowance for Loan Losses Allowance Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance at Beginning of Period	$ 73,464	$ 75,009	$ 74,742	$ 78,077
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	(38)	(529)	(559)
Financing Receivable, Allowance for Credit Losses, Recoveries	985	334	1,578	4,082
Provision/ (credit) for loan losses	(949)	(432)	(2,291)	(6,727)
Loans and Leases Receivable, Allowance at End of Period	73,500	74,873	73,500	74,873
Commercial and Industrial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance at Beginning of Period	12,381	11,672	11,735	12,751
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	0	(339)	(218)
Financing Receivable, Allowance for Credit Losses, Recoveries	153	241	387	395
Provision/ (credit) for loan losses	1,921	973	2,672	(42)
Loans and Leases Receivable, Allowance at End of Period	14,455	12,886	14,455	12,886
Commercial real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance at Beginning of Period	45,183	48,136	46,820	50,412
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	0	(135)	0
Financing Receivable, Allowance for Credit Losses, Recoveries	820	76	995	3,605
Provision/ (credit) for loan losses	(3,179)	(1,173)	(4,856)	(6,978)
Loans and Leases Receivable, Allowance at End of Period	42,824	47,039	42,824	47,039
Construction and land [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance at Beginning of Period	4,613	3,585	4,949	3,039
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	0	0	0
Financing Receivable, Allowance for Credit Losses, Recoveries	0	13	0	13
Provision/ (credit) for loan losses	172	182	(164)	728
Loans and Leases Receivable, Allowance at End of Period	4,785	3,780	4,785	3,780
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance at Beginning of Period	9,804	10,282	9,773	10,449
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	0	(16)	(58)
Financing Receivable, Allowance for Credit Losses, Recoveries	0	0	27	47
Provision/ (credit) for loan losses	144	(431)	164	(587)
Loans and Leases Receivable, Allowance at End of Period	9,948	9,851	9,948	9,851
Home equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance at Beginning of Period	1,336	929	835	1,035
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	0	0	0
Financing Receivable, Allowance for Credit Losses, Recoveries	0	0	1	0
Provision/ (credit) for loan losses	6	(15)	506	(121)
Loans and Leases Receivable, Allowance at End of Period	1,342	914	1,342	914
Consumer and other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance at Beginning of Period	147	405	630	391
Financing Receivable, Allowance for Credit Losses, Charge-offs	0	(38)	(39)	(283)
Financing Receivable, Allowance for Credit Losses, Recoveries	12	4	168	22
Provision/ (credit) for loan losses	(13)	32	(613)	273
Loans and Leases Receivable, Allowance at End of Period	$ 146	$ 403	$ 146	$ 403

Allowance for Loan Losses All_2

Allowance for Loan Losses Allowance by impairment analysis method (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Individually Evaluated for Impairment	$ 13,958		$ 22,577
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	1,247		654
Financing Receivable, Collectively Evaluated for Impairment	6,706,462		6,482,451
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	72,253		74,088
Loans and Leases Receivable, Net of Deferred Income	6,720,420		6,505,028
Loans and Leases Receivable, Allowance	73,500	$ 73,464	74,742	$ 74,873	$ 75,009	$ 78,077
Commercial and Industrial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Individually Evaluated for Impairment	2,785		1,676
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	577		58
Financing Receivable, Collectively Evaluated for Impairment	1,019,236		938,014
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	13,878		11,677
Loans and Leases Receivable, Net of Deferred Income	1,022,021		939,690
Loans and Leases Receivable, Allowance	14,455	12,381	11,735	12,886	11,672	12,751
Commercial real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Individually Evaluated for Impairment	1,625		8,687
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		362
Financing Receivable, Collectively Evaluated for Impairment	2,397,455		2,431,533
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	42,824		46,458
Loans and Leases Receivable, Net of Deferred Income	2,399,080		2,440,220
Loans and Leases Receivable, Allowance	42,824	45,183	46,820	47,039	48,136	50,412
Construction and land [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0		109
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Collectively Evaluated for Impairment	197,524		164,881
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	4,785		4,949
Loans and Leases Receivable, Net of Deferred Income	197,524		164,990
Loans and Leases Receivable, Allowance	4,785	4,613	4,949	3,780	3,585	3,039
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Individually Evaluated for Impairment	7,779		10,165
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	74		89
Financing Receivable, Collectively Evaluated for Impairment	2,855,100		2,672,368
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	9,874		9,684
Loans and Leases Receivable, Net of Deferred Income	2,862,879		2,682,533
Loans and Leases Receivable, Allowance	9,948	9,804	9,773	9,851	10,282	10,449
Home equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Individually Evaluated for Impairment	1,769		1,815
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	596		20
Financing Receivable, Collectively Evaluated for Impairment	91,621		98,143
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	746		815
Loans and Leases Receivable, Net of Deferred Income	93,390		99,958
Loans and Leases Receivable, Allowance	1,342	1,336	835	914	929	1,035
Consumer and other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0		125
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		125
Financing Receivable, Collectively Evaluated for Impairment	145,526		177,512
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	146		505
Loans and Leases Receivable, Net of Deferred Income	145,526		177,637
Loans and Leases Receivable, Allowance	$ 146	$ 147	$ 630	$ 403	$ 405	$ 391

Allowance for Loan Losses All_3

Allowance for Loan Losses Allowance for Loan Losses Text Disclosures (Details) - USD ($)	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Allowance	$ 73,500,000	$ 73,464,000	$ 74,742,000	$ 74,873,000	$ 75,009,000	$ 78,077,000
Loans and Leases Receivable, Net of Deferred Income	6,720,420,000		6,505,028,000
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 0		$ 0

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities Derivatives Fair Value and Balance Sheet Classification (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	$ 28,715	$ 19,133
Other Assets [Member] | Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	903	555
Other Assets [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	27,792	18,575
Other Assets [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	0	2
Other Assets [Member] | Not Designated as Hedging Instrument [Member] | Loan Participations and Assignments [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	[1]	20	1
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	[1]	(28,299)	(19,143)
Other Liabilities [Member] | Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	[1]	0	(80)
Other Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	[1]	(28,209)	(18,953)
Other Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	[1]	0	(2)
Other Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Loan Participations and Assignments [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	[1]	$ (90)	$ (108)
[1]	For additional details, see Part I. Item 1. “Notes to Unaudited Consolidated Financial Statements - Note 5: Fair Value Measurements.”

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities Effect of Derivative Instruments on Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2018		Sep. 30, 2017		Sep. 30, 2018		Sep. 30, 2017		Jan. 01, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	$ (193)	[1]	$ 121	[1]	$ 818	[2]	$ (237)	[2]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(101)		(293)		(385)		(953)
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net			(1)				(3)
Cumulative Effect of New Accounting Principle in Period of Adoption									$ 5
Interest Expense [Member] | Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(101)		(293)		(385)		(953)
Cash Flow Hedging [Member] | Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	$ (193)	[1]	$ 121	[1]	$ 818	[2]	$ (237)	[2]
[1]	There was an additional $(1) thousand loss related to the ineffective portion for the three months ended as of September 30, 2017.
[2]	There was an additional $(3) thousand loss related to the ineffective portion for the nine months ended as of September 30, 2017. The guidance in ASU 2017-12 requires that amounts in accumulated other comprehensive income that are included in the assessment of effectiveness should be reclassified into earnings in the same period in which the hedged forecasted transactions impact earnings. Transition guidance for this ASU further states that upon adoption, previously recorded cumulative ineffectiveness for cash flow hedges existing at the adoption date be eliminated by means of a cumulative-effect adjustment to accumulated other comprehensive income with a corresponding adjustment to the opening balance of retained earnings as of the initial application date. There was a $5 thousand reclassification related to the adoption of ASU 2017-12 effective January 1, 2018.

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities Effect of Derivative Instruments on Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Interest Rate Contract [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	$ (101)	$ (385)

Derivatives and Hedging Activ_6

Derivatives and Hedging Activities Derivatives collateral with counterparties (Details) - Interest Rate Swap [Member] - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Collateral, Obligation to Return Cash	$ 0	$ 3.1
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Collateral, Right to Reclaim Securities	$ 1.1	$ 2.3

Derivatives and Hedging Activ_7

Derivatives and Hedging Activities Cash Flow Hedges Text Description (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)contracts
Derivative [Line Items]
Objectives for Using Derivative Instruments	The Company’s objectives in using interest rate derivatives are to add stability to interest income and expense and to manage its exposure to interest rate movements.
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	$ 0.9
Private Banking Segment [Member]
Derivative [Line Items]
Number of Interest Rate Derivatives Held | contracts	5
Interest Rate Swap [Member] | Bank $25m LIBOR Swap effective 8/1/13 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Objectives for Using Derivative Instruments	The interest rate swaps will effectively fix the Bank’s interest payments on $75 million of its LIBOR-indexed deposit liabilities
Derivative, Inception Date	Aug. 1, 2013
Derivative Asset, Notional Amount	$ 25
Interest Rate Swap [Member] | Bank $25m LIBOR Swap effective 8/1/13 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member] | Minimum [Member]
Derivative [Line Items]
Derivative, Term of Contract	5 years
Derivative, Fixed Interest Rate	1.68%
Interest Rate Swap [Member] | Bank $25m LIBOR Swap effective 8/1/13 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member] | Maximum [Member]
Derivative [Line Items]
Derivative, Term of Contract	6 years
Derivative, Fixed Interest Rate	2.03%
Interest Rate Swap [Member] | Bank $25m LIBOR Swap effective 8/1/13 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member] | Weighted Average [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	1.82%
Interest Rate Swap [Member] | Bank $25m LIBOR Swap effective 3/1/14 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Objectives for Using Derivative Instruments	The interest rate swaps will effectively fix the Bank’s interest payments on $75 million of its LIBOR-indexed deposit liabilities
Derivative, Inception Date	Mar. 1, 2014
Derivative Asset, Notional Amount	$ 25
Interest Rate Swap [Member] | Bank $25m LIBOR Swap effective 3/1/14 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member] | Minimum [Member]
Derivative [Line Items]
Derivative, Term of Contract	5 years
Derivative, Fixed Interest Rate	1.68%
Interest Rate Swap [Member] | Bank $25m LIBOR Swap effective 3/1/14 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member] | Maximum [Member]
Derivative [Line Items]
Derivative, Term of Contract	6 years
Derivative, Fixed Interest Rate	2.03%
Interest Rate Swap [Member] | Bank $25m LIBOR Swap effective 3/1/14 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member] | Weighted Average [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	1.82%
Interest Rate Swap [Member] | Bank $25m LIBOR Swap 2013 effective 6/1/14 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Objectives for Using Derivative Instruments	The interest rate swaps will effectively fix the Bank’s interest payments on $75 million of its LIBOR-indexed deposit liabilities
Derivative, Inception Date	Jun. 1, 2014
Derivative Asset, Notional Amount	$ 25
Interest Rate Swap [Member] | Bank $25m LIBOR Swap 2013 effective 6/1/14 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member] | Minimum [Member]
Derivative [Line Items]
Derivative, Term of Contract	5 years
Derivative, Fixed Interest Rate	1.68%
Interest Rate Swap [Member] | Bank $25m LIBOR Swap 2013 effective 6/1/14 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member] | Maximum [Member]
Derivative [Line Items]
Derivative, Term of Contract	6 years
Derivative, Fixed Interest Rate	2.03%
Interest Rate Swap [Member] | Bank $25m LIBOR Swap 2013 effective 6/1/14 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member] | Weighted Average [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	1.82%
Interest Rate Swap [Member] | Bank $40m LIBOR Swap 2017 effective 3/22/17 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Objectives for Using Derivative Instruments	These interest rate swaps will effectively fix the Bank’s interest payments on $100 million in interest-related cash outflows attributable to changes in the LIBOR component of FHLB borrowing liabilities
Derivative, Inception Date	Mar. 22, 2017
Derivative Asset, Notional Amount	$ 40
Derivative, Term of Contract	1 year 9 months
Derivative, Fixed Interest Rate	1.55%
Interest Rate Swap [Member] | Bank $40m LIBOR Swap 2017 effective 3/22/17 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member] | Weighted Average [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	1.61%
Interest Rate Swap [Member] | Bank $60m LIBOR Swap 2017 effective 3/22/17 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Objectives for Using Derivative Instruments	These interest rate swaps will effectively fix the Bank’s interest payments on $100 million in interest-related cash outflows attributable to changes in the LIBOR component of FHLB borrowing liabilities
Derivative, Inception Date	Mar. 22, 2017
Derivative Asset, Notional Amount	$ 60
Derivative, Term of Contract	2 years 3 months
Derivative, Fixed Interest Rate	1.65%
Interest Rate Swap [Member] | Bank $60m LIBOR Swap 2017 effective 3/22/17 [Member] | Private Banking Segment [Member] | Designated as Hedging Instrument [Member] | Weighted Average [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	1.61%

Derivatives and Hedging Activ_8

Derivatives and Hedging Activities Non-designated Hedges Text description (Details) - Not Designated as Hedging Instrument [Member] $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)contracts	Dec. 31, 2017USD ($)contracts
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Number of Instruments Held | contracts	156	142
Derivative, Notional Amount | $	$ 1,200	$ 1,100
Derivative, Underlying Risk, Description	Because the derivatives have mirror-image contractual terms, the changes in fair value substantially offset through earnings. The net effect on earnings is primarily driven by changes in the credit valuation adjustment (“CVA”). The CVA represents the dollar amount of fair value adjustment related to nonperformance risk of both the Bank and its counterparties.
Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative, Number of Instruments Held | contracts	0	3
Derivative, Notional Amount | $		$ 0.2
Loan Participations and Assignments [Member]
Derivative [Line Items]
Derivative, Number of Instruments Held | contracts	7	6
Derivative, Notional Amount | $	$ 60	$ 48
Derivative, Underlying Risk, Description	The Bank has no obligations under the risk participation agreements unless the borrower defaults on their swap transaction with the lead bank and the swap is in a liability position to the borrower. In that instance, the Bank has agreed to pay the lead bank a portion of the swap’s termination value at the time of the default.
Other Contract [Member]
Derivative [Line Items]
Derivative, Number of Instruments Held | contracts	3	2
Derivative, Notional Amount | $	$ 11.5	$ 6.1
Derivative, Underlying Risk, Description	The other financial institution has no obligations under the risk participation agreements unless the borrowers default on their swap transactions with the Bank and the swaps are in liability positions to the borrower. In those instances, the other financial institution has agreed to pay the Bank a portion of the swap’s termination value at the time of the default.

Derivatives and Hedging Activ_9

Derivatives and Hedging Activities Derivatives not designated as hedges, effect on statement of operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Description of Location of Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments in Financial Statements			Other income/ (expense)
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 26	$ (44)	$ 199	$ (370)
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	8	(49)	(39)	(695)
Not Designated as Hedging Instrument [Member] | Loan Participations and Assignments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 18	$ 5	$ 238	$ 325

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Tax Expense Components [Line Items]
Income before income taxes	$ 24,347	$ 27,980	$ 77,214	$ 82,985
Income tax expense	5,461	8,289	28,886	24,805
Net income from continuing operations	18,886	19,691	$ 48,328	$ 58,180
Effective Income Tax Rate, Continuing Operations			37.40%	29.90%
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax			$ 2,388	$ 6,631
Discontinued Operation, Tax Effect of Discontinued Operation			692	2,750
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	0	1,186	$ 1,696	$ 3,881
Effective Tax Rate Discontinued Operations			29.00%	41.50%
Net Income (Loss) Attributable to Noncontrolling Interest	924	1,074	$ 2,942	$ 3,190
Tax effect Attributable to Noncontrolling Interests			$ 0	$ 0
Effective Tax Rate Noncontrolling Interests			0.00%	0.00%
Income from Continuing and Discontinued Operations Attributable to Parent Before Tax			$ 76,660	$ 86,426
Tax Expense (Benefit) Total			29,578	27,555
Net income attributable to the Company	$ 17,962	$ 19,803	$ 47,082	$ 58,871
Effective Tax Rate Total			38.60%	31.90%

Income Taxes Income Taxes Discu

Income Taxes Income Taxes Discussion (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Tax Expense Components [Line Items]
Effective Income Tax Rate Reconciliation, Percent			37.40%	29.90%
Income tax expense	$ 5,461	$ 8,289	$ 28,886	$ 24,805
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate			21.00%	35.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount	$ 400
Anchor [Member]
Income Tax Expense Components [Line Items]
Effective income tax rate reconciliation, disposition of asset, amount			$ 12,700

Noncontrolling Interests Compon

Noncontrolling Interests Components of Noncontrolling Interests (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Redeemable Noncontrolling Interest [Line Items]
Redeemable and Nonredeemable Noncontrolling Interest		$ 13,895	$ 22,647
Redeemable Noncontrolling Interests		11,686	17,461
Nonredeemable Noncontrolling Interest		2,209	5,186
Anchor [Member]
Redeemable Noncontrolling Interest [Line Items]
Redeemable and Nonredeemable Noncontrolling Interest	[1]	0	9,761
BOS [Member]
Redeemable Noncontrolling Interest [Line Items]
Redeemable and Nonredeemable Noncontrolling Interest		8,675	8,057
DGHM [Member]
Redeemable Noncontrolling Interest [Line Items]
Redeemable Noncontrolling Interests	[2]	$ 5,220	$ 4,829
[1]	Assets and liabilities at Anchor were classified as held for sale on the Company’s consolidated balance sheets at December 31, 2017. The Company completed the sale of Anchor in April 2018.
[2]	Only includes redeemable noncontrolling interests.

Noncontrolling Interests Redeem

Noncontrolling Interests Redeemable Noncontrolilng Interests Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests at beginning of period			$ 17,461
Nonredeemable Noncontrolling Interest at beginning of period			5,186
Net Income (Loss) Attributable to Noncontrolling Interest	$ 924	$ 1,074	2,942	$ 3,190
Redeemable noncontrolling interests at end of period	11,686		11,686
Nonredeemable Noncontrolling Interest at end of period	2,209		2,209
Redeemable Noncontrolling Interest [Member]
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests at beginning of period	10,747	17,216	17,461	16,972
Net Income (Loss) Attributable to Noncontrolling Interest	711	802	2,202	2,385
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(687)	(869)	(2,136)	(2,414)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	0	103	(6,353)	235
Amortization of Noncontrolling Interest Equity Compensation	125	102	373	306
Noncontrolling Interest, adjustment to fair value	790	(1,472)	139	(1,602)
Redeemable noncontrolling interests at end of period	11,686	15,882	11,686	15,882
Noncontrolling Interest [Member]
Redeemable Noncontrolling Interest [Line Items]
Nonredeemable Noncontrolling Interest at beginning of period	1,996	4,375	5,186	4,161
Net Income (Loss) Attributable to Noncontrolling Interest	213	272	740	805
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(203)	(264)	(712)	(783)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	0	85	(3,051)	85
Amortization of Noncontrolling Interest Equity Compensation	0	250	161	756
Noncontrolling Interest, adjustment to fair value	203	74	(115)	(232)
Nonredeemable Noncontrolling Interest at end of period	$ 2,209	$ 4,792	$ 2,209	$ 4,792

Noncontrolling Interests Noncon

Noncontrolling Interests Noncontrolling Interests - Text Details (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Noncontrolling Interest [Abstract]
Net Income (Loss) Attributable to Noncontrolling Interest	$ 924	$ 1,074	$ 2,942	$ 3,190
Redeemable Noncontrolling Interest, Equity, Carrying Amount	11,686		11,686		$ 17,461
Nonredeemable Noncontrolling Interest	$ 2,209		$ 2,209		$ 5,186

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2018		Sep. 30, 2017		Sep. 30, 2018		Sep. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	$ 0		$ 141		$ 0		$ 293
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	(193)	[1]	121	[1]	818	[2]	(237)	[2]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	72		(172)		273		(558)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	72		(31)		273		(265)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax					0		293
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax					273		(558)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Gain (Loss) on Investments [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	0		(230)		0		(486)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Income Tax Expense [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	0		89		0		193
Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Income Attributable to the Company [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	0		(141)		0		(293)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Hedges related to deposits [Member] | Income Tax Expense [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	29		(123)		112		(398)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Hedges related to deposits [Member] | Interest Expense [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	(101)		293		(385)		953
Reclassification out of Accumulated Other Comprehensive Income [Member] | Hedges related to deposits [Member] | Other Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	0		(2)		0		(3)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Hedges related to deposits [Member] | Net Income Attributable to the Company [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	$ (72)		$ 172		$ (273)		$ 558
[1]	There was an additional $(1) thousand loss related to the ineffective portion for the three months ended as of September 30, 2017.
[2]	There was an additional $(3) thousand loss related to the ineffective portion for the nine months ended as of September 30, 2017. The guidance in ASU 2017-12 requires that amounts in accumulated other comprehensive income that are included in the assessment of effectiveness should be reclassified into earnings in the same period in which the hedged forecasted transactions impact earnings. Transition guidance for this ASU further states that upon adoption, previously recorded cumulative ineffectiveness for cash flow hedges existing at the adoption date be eliminated by means of a cumulative-effect adjustment to accumulated other comprehensive income with a corresponding adjustment to the opening balance of retained earnings as of the initial application date. There was a $5 thousand reclassification related to the adoption of ASU 2017-12 effective January 1, 2018.

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income Reclassification out of AOCI to RE (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (27,578)		$ (27,578)			$ (8,658)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(138)	$ 70	574	$ (140)
Reclassification adjustment for net realized (gain)/ loss included in net income	0	(141)	0	(293)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	72	(172)	273	(558)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(72)	31	(273)	265
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	(4,040)	973	(18,888)	7,295
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(210)	242	301	418
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	0	0	(1)	(12)
Other comprehensive income/ (loss), net of tax	(4,250)	1,215	(18,586)	7,725
Cumulative Effect of New Accounting Principle in Period of Adoption					$ 5
Accounting Standards Update 2016-01 [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					(339)
Accounting Standards Update 2017-12 [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					5
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(27,578)	(4,823)	(27,578)	(4,823)		(8,658)	$ (12,548)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			(18,313)	7,460
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			273	(265)
Other comprehensive income/ (loss), net of tax			(18,586)	7,725
Cumulative Effect of New Accounting Principle in Period of Adoption					(334)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(27,367)	(3,899)	(27,367)	(3,899)		(8,140)	(11,194)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, after Tax			(18,888)	7,588
Reclassification adjustment for net realized (gain)/ loss included in net income			0	(293)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax			(18,888)	7,295
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Accounting Standards Update 2016-01 [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					(339)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	638	(187)	638	(187)		332	(605)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax			574	(140)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax			273	(558)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax			301	418
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Accounting Standards Update 2017-12 [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					5
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (849)	$ (737)	(849)	(737)		$ (850)	$ (749)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax			(1)	(12)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax			0	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax			$ (1)	$ (12)
Cumulative Effect of New Accounting Principle in Period of Adoption					$ 0

Restructuring (Details)

Restructuring (Details) - USD ($)		3 Months Ended									12 Months Ended
		Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2014	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, beginning of period	[1]	$ 0	$ 83,000	$ 337,000	$ 1,024,000	$ 1,359,000	$ 1,977,000
Restructuring and Related Cost, Incurred Cost	[1]	5,763,000
Restructuring Reserve, Settled with Cash	[1]	0	(83,000)	(254,000)	(410,000)	(335,000)	(618,000)
Restructuring Reserve, end of period	[1]	5,763,000	0	83,000	614,000	1,024,000	1,359,000
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, beginning of period	[1]	0	83,000	337,000	1,024,000	1,359,000	1,977,000
Restructuring and Related Cost, Incurred Cost	[1]	5,763,000
Restructuring Reserve, Settled with Cash	[1]	0	(83,000)	(254,000)	(410,000)	(335,000)	(618,000)
Restructuring Reserve, end of period	[1]	5,763,000	$ 0	$ 83,000	$ 614,000	$ 1,024,000	$ 1,359,000
Banyan Acquisition and WMT Management Restructuring Plan [Member] | Wealth Management and Trust Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost								$ 900,000	$ 1,100,000	$ 700,000	$ 3,700,000
Restructuring and Related Cost, Cost Incurred to Date										$ 6,400,000
Restructuring and Related Cost, Expected Cost Remaining		0
Expense Efficiency 2018 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost		$ 5,800,000
[1]	Restructuring charges consist solely of severance costs for all periods presented.

Revenue Recognition (Details)

Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Other Banking Fee Income [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1.1	$ 0.9	$ 3.1	$ 2.7
Other Liabilities [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Deferred Revenue	$ 6.9		$ 6.9		$ 6.6

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					$ (5)
Reclassification due to change in accounting principles			$ 0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%	35.00%
Accounting Standards Update 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					339
Accounting Standards Update 2016-01 [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					339
Accounting Standards Update 2016-01 [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					339
Accounting Standards Update 2017-07 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prior Period Reclassification Adjustment		$ 256		$ 597
Reclassification due to change in accounting principles	$ 131		$ 411
Accounting Standards Update 2017-12 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					(5)
Accounting Standards Update 2017-12 [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					(5)
Accounting Standards Update 2017-12 [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					$ (5)
Accounting Standards Update 2018-02 [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption						$ (1,500)

Subsequent Event (Details)

Subsequent Event (Details) - USD ($) $ in Thousands	1 Months Ended			3 Months Ended		9 Months Ended
	Nov. 05, 2018	Nov. 02, 2018	Oct. 17, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Subsequent Event [Line Items]
Income tax expense/ (benefit) related to sale of affiliate						$ 12,700
Revenues				$ 91,955	$ 96,894	278,721	$ 282,205
Net Income (Loss) Attributable to Noncontrolling Interest				924	$ 1,074	2,942	$ 3,190
Subsequent Event [Member]
Subsequent Event [Line Items]
Subsequent Event, Date	Nov. 5, 2018	Nov. 2, 2018
Subsequent Event, Description	the Company announced that Anthony DeChellis, 56, will become Chief Executive Officer, President, and member of the Board of Directors of the Company, and Chief Executive Officer and member of the Board of Directors of the Bank, effective November 26, 2018. Mr. DeChellis will become President of the Bank on December 1, 2018, following the previously announced retirement of George G. Schwartz.	Clayton G. Deutsch informed the Board of Directors of the Company of his intent to retire from his positions as Chief Executive Officer and President of the Company, member of the Board of Directors of the Company, and as Chief Executive Officer and member of the Board of Directors of the Bank, effective November 26, 2018.
BOS [Member]
Subsequent Event [Line Items]
Assets Under Management				$ 4,700,000		4,700,000
Revenues						17,400
Operating Expenses						11,900
Net Income (Loss) Attributable to Noncontrolling Interest						$ 2,100
BOS [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Subsequent Event, Date			Oct. 17, 2018
Subsequent Event, Description			the Company announced an agreement to sell all of its ownership interest in BOS in a transaction that will result in BOS being majority-owned by members of its management team for an upfront cash payment and a non-voting, revenue share participation interest in BOS. The transaction is expected to close in the fourth quarter of 2018. Completion of the transaction is subject to obtaining client consents, as well as satisfaction of other customary closing conditions.
Proceeds from Sales of Business, Affiliate and Productive Assets			$ 21,000
Pre Tax Gain on Sale of Affiliate			18,000
Common Equity Tier One Capital			33,000
BOS [Member] | Subsequent Event [Member] | Minimum [Member]
Subsequent Event [Line Items]
Income tax expense/ (benefit) related to sale of affiliate			3,000
BOS [Member] | Subsequent Event [Member] | Maximum [Member]
Subsequent Event [Line Items]
Income tax expense/ (benefit) related to sale of affiliate			$ 4,000