Fair Value (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis 1 [Table Text Block]

	December 31, 2017
	Fair Value Measurements
	Level 1		Level 2		Level 3		Total
	(In thousands)
Recurring fair value measurements:
Investment securities available-for-sale	$	-	$	645,797	$	-	$	645,797
Trading securities		-		191		-		191
Money market investments		7,021		-		-		7,021
Derivative assets		-		771		-		771
Servicing assets		-		-		9,821		9,821
Derivative liabilities		-		(1,281)		-		(1,281)
	$	7,021	$	645,478	$	9,821	$	662,320
Non-recurring fair value measurements:
Impaired commercial loans	$	-	$	-	$	72,285	$	72,285
Foreclosed real estate		-		-		44,174		44,174
Other repossessed assets		-		-		3,548		3,548
	$	-	$	-	$	120,007	$	120,007

	December 31, 2016
	Fair Value Measurements
	Level 1		Level 2		Level 3		Total
	(In thousands)
Recurring fair value measurements:
Investment securities available-for-sale	$	-	$	751,484	$	-	$	751,484
Trading securities		-		347		-		347
Money market investments		5,606		-		-		5,606
Derivative assets		-		1,330		-		1,330
Servicing assets		-		-		9,858		9,858
Derivative liabilities		-		(2,437)		-		(2,437)
	$	5,606	$	750,724	$	9,858	$	766,188
Non-recurring fair value measurements:
Impaired commercial loans	$	-	$	-	$	54,289	$	54,289
Foreclosed real estate		-		-		47,520		47,520
Other repossessed assets		-		-		3,224		3,224
	$	-	$	-	$	105,033	$	105,033

	Year Ended December 31, 2017
	Servicing
Level 3 Instruments Only	assets
	(In thousands)
Balance at beginning of period	$	9,858
New instruments acquired		1,658
Principal repayments		(590)
Changes in fair value of servicing assets		(1,105)
Balance at end of period	$	9,821

	Year Ended December 31, 2016
	Derivative				Derivative
	asset				liability
	(S&P				(S&P
	Purchased			Servicing	Embedded
Level 3 Instruments Only	Options)			assets	Options)		Total
	(In thousands)
Balance at beginning of period	$	1,171	$	7,455	$	(1,095)	$	7,531
Gains (losses) included in earnings		(1,171)		-		1,067		(104)
New instruments acquired		-		2,616		-		2,616
Principal repayments		-		(489)		-		(489)
Amortization		-		-		28		28
Changes in fair value of servicing assets		-		276		-		276
Balance at end of period	$	-	$	9,858	$	-	$	9,858
	YearEnded December 31, 2015
	Derivative					Derivative
	asset					liability
	(S&P					(S&P
	Purchased			Servicing		Embedded
Level 3 Instruments Only	Options)			assets		Options)		Total
	(In thousands)
Balance at beginning of period	$	5,555	$	13,992	$	(5,477)	$	14,070
Gains (losses) included in earnings		(4,384)		-		4,197		(187)
Sale of mortgage servicing rights		-		(5,927)		-		(5,927)
New instruments acquired		-		2,620		-		2,620
Principal repayments		-		(1,017)		-		(1,017)
Amortization		-		-		185		185
Changes in fair value related to price of MSR held-for-sale		-		(2,939)		-		(2,939)
Changes in fair value of servicing assets		-		726		-		726
Balance at end of period	$	1,171	$	7,455	$	(1,095)	$	7,531

Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table Text Block]

	December 31, 2017
	Fair Value		Valuation Technique	Unobservable Input	Range
	(In thousands)
Servicing assets	$	9,821	Cash flow valuation	Constant prepayment rate	3.94% -8.49%
				Discount rate	10.00% - 12.00%
Collateral dependant impaired loans	$	36,734	Fair value of property or collateral	Appraised value less disposition costs	20.20% - 36.20%
Other non-collateral dependant impaired loans	$	35,551	Cash flow valuation	Discount rate	4.15% - 10.50%
Foreclosed real estate	$	44,174	Fair value of property or collateral	Appraised value less disposition costs	20.20% - 36.20%
Other repossessed assets	$	3,548	Fair value of property or collateral	Estimated net realizable value less disposition costs	29.00% - 71.00%

Fair Value By Balance Sheet Grouping [Text Block]

	December 31,				December 31,
	2017				2016
	Fair		Carrying		Fair		Carrying
	Value		Value		Value		Value
	(In thousands)
Level 1
Financial Assets:
Cash and cash equivalents	$	485,203	$	485,203	$	510,439	$	510,439
Restricted cash	$	3,030	$	3,030	$	3,030	$	3,030
Level 2
Financial Assets:
Trading securities	$	191	$	191	$	347	$	347
Investment securities available-for-sale	$	645,797	$	645,797	$	751,484	$	751,484
Investment securities held-to-maturity	$	497,681	$	506,064	$	592,763	$	599,884
Federal Home Loan Bank (FHLB) stock	$	13,995	$	13,995	$	10,793	$	10,793
Other investments	$	3	$	3	$	3	$	3
Derivative assets	$	771	$	771	$	1,330	$	1,330
Financial Liabilities:
Derivative liabilities	$	1,281	$	1,281	$	2,437	$	2,437
Level 3
Financial Assets:
Total loans (including loans held-for-sale)	$	3,842,907	$	4,056,329	$	3,917,340	$	4,147,692
FDIC indemnification asset	$	-	$	-	$	8,669	$	14,411
Accrued interest receivable	$	49,969	$	49,969	$	20,227	$	20,227
Servicing assets	$	9,821	$	9,821	$	9,858	$	9,858
Accounts receivable and other assets	$	41,898	$	41,898	$	47,120	$	47,120
Financial Liabilities:
Deposits	$	4,782,197	$	4,799,482	$	4,644,629	$	4,664,487
Securities sold under agreements to repurchase	$	191,104	$	192,869	$	651,898	$	653,756
Advances from FHLB	$	99,509	$	99,643	$	106,422	$	105,454
Other borrowings	$	153	$	153	$	61	$	61
Subordinated capital notes	$	33,080	$	36,083	$	30,230	$	36,083
Accrued expenses and other liabilities	$	86,791	$	86,791	$	95,370	$	95,370