Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value [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 December 31, 2017 and 2016, aggregated by the level in the fair value hierarchy within which those measurements fall:

	As of December 31, 2017		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	$	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 forward	2		—		2		—
Other investments	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 forward	2		—		2		—
Other liabilities	7,062		7,062		—		—

	As of December 31, 2016		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	$	39,936	$	39,293	$	643	$	—
Government-sponsored entities	336,664		—		336,664		—
Municipal bonds	293,397		—		293,397		—
Mortgage-backed securities	570,327		—		570,327		—
Other	23,808		23,808		—		—
Total available-for-sale securities	1,264,132		63,101		1,201,031		—
Derivatives - interest rate customer swaps	17,032		—		17,032		—
Derivatives - risk participation agreements	15		—		15		—
Other investments	6,110		6,110		—		—
Liabilities:
Derivatives - interest rate customer swaps	$	16,560	$	—	$	16,560	$	—
Derivatives - interest rate swaps	1,040		—		1,040		—
Derivatives - risk participation agreements	6		—		6		—
Other liabilities	6,110		6,110		—		—

Fair Value Measurements, Nonrecurring [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 December 31, 2017 and 2016, respectively, aggregated by the level in the fair value hierarchy within which those measurements fall:

	As of December 31, 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)		Year ended December 31, 2017
	(In thousands)
Assets:
Impaired loans (1)	$	1,778	$	—	$	—	$	1,778	$	(465	)
Goodwill (2)	42,054		—		—		42,054		(24,901		)
	$	43,832	$	—	$	—	$	43,832	$	(25,366	)

___________________

(1) Collateral-dependent impaired loans held as of December 31, 2017 that had write-downs in fair value or whose specific reserve changed during 2017.

(2) Goodwill balance at Anchor as of December 31, 2017 that had write-downs in fair value during 2017. The goodwill balance related to Anchor is recorded in other assets held for sale as of December 31, 2017. See Part II. Item 8. “Financial Statements and Supplementary Data - Note 8: Goodwill and Other Intangible Assets” for further detail.

	As of December 31, 2016		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)		Year ended December 31, 2016
	(In thousands)
Assets:
Impaired loans (1)	$	3,074	$	—	$	—	$	3,074	$	(428	)
OREO (2)	1,690		—		—		1,690		(110		)
Goodwill (3)	34,777		—		—		34,777		(9,528		)
	$	39,541	$	—	$	—	$	39,541	$	(10,066	)

___________________

(1) Collateral-dependent impaired loans held as of December 31, 2016 that had write-downs in fair value or whose specific reserve changed during 2016

(2) OREO held as of December 31, 2016 that had write-downs in fair value during 2016.

(3) Goodwill balance at Boston Private Wealth as of December 31, 2016 that had write-downs in fair value during 2016. See Part II. Item 8. “Financial Statements and Supplementary Data - Note 8: Goodwill and Other Intangible Assets” for further detail.

Fair Value Measurements, Recurring and Nonrecurring, 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 December 31, 2017
	Fair Value		Valuation technique	Unobservable Input	Range of Inputs Utilized	Weighted Average of Inputs Utilized
	(In thousands)
Impaired Loans	$	1,778	Appraisals of Collateral	Discount for costs to sell	0% - 7%	5%
				Appraisal adjustments	0% - 20%	14%

See Part II. Item 8. “Financial Statements and Supplementary Data - Note 8: Goodwill and Other Intangible Assets” for additional quantitative information about the 2017 goodwill impairment charges at Anchor.

	As of December 31, 2016
	Fair Value		Valuation technique	Unobservable Input	Range of Inputs Utilized	Weighted Average of Inputs Utilized
	(In thousands)
Impaired Loans	$	3,074	Appraisals of Collateral	Discount for costs to sell	5% - 7%	6%
				Appraisal adjustments	0% - 20%	13%
OREO	$	1,690	Appraisals of Collateral	Discount for costs to sell	6%	6%
				Appraisal adjustments	18%	18%

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 (other than certain loans, as noted below):

	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		—

	As of December 31, 2016
	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	$	106,557	$	106,557	$	106,557	$	—	$	—
Investment securities held-to-maturity	93,079		92,604		—		92,604		—
Loans held for sale	3,464		3,428		—		3,428		—
Loans, net	6,036,277		6,021,611		—		—		6,021,611
Other financial assets	77,956		77,956		—		77,956		—
FINANCIAL LIABILITIES:
Deposits	6,085,146		6,084,765		—		6,084,765		—
Securities sold under agreements to repurchase	59,624		59,624		—		59,624		—
Federal funds purchased	80,000		80,000		—		80,000		—
Federal Home Loan Bank borrowings	734,205		734,941		—		734,941		—
Junior subordinated debentures	106,363		96,363		—		—		96,363
Other financial liabilities	1,942		1,942		—		1,942		—