Note 9 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	At March 31, 2019
	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3) (1)
	(In thousands)
Equity securities
Mutual funds	$	1,771	$	-	$	1,771	$	-
Total equity securities		1,771		-		1,771		-
Debt securities available for sale
U.S. Treasury securities		109,054		109,054		-		-
Securities of U.S. Government sponsored entities		165,739		-		165,739		-
Agency residential MBS		930,023		-		930,023		-
Non-agency residential MBS		112		-		112		-
Agency commercial MBS		1,837		-		1,837		-
Securities of U.S. Government entities		1,081		-		1,081		-
Obligations of states and political subdivisions		172,053		-		172,053		-
Corporate securities		1,322,341		-		1,322,341		-
Total debt securities available for sale		2,702,240		109,054		2,593,186		-
Total	$	2,704,011	$	109,054	$	2,594,957	$	-

	At December 31, 2018
	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3) (1)
	(In thousands)
Equity securities
Mutual funds	$	1,747	$	-	$	1,747	$	-
Total equity securities		1,747		-		1,747		-
Debt securities available for sale
U.S. Treasury securities		139,574		139,574		-		-
Securities of U.S. Government sponsored entities		164,018		-		164,018		-
Agency residential MBS		853,871		-		853,871		-
Non-agency residential MBS		114		-		114		-
Agency commercial MBS		1,842		-		1,842		-
Securities of U.S. Government entities		1,119		-		1,119		-
Obligations of states and political subdivisions		179,091		-		179,091		-
Corporate securities		1,315,041		-		1,315,041		-
Total debt securities available for sale		2,654,670		139,574		2,515,096		-
Total	$	2,656,417	$	139,574	$	2,516,843	$	-

Fair Value Measurements, Nonrecurring [Table Text Block]

									For the Three Months Ended
	At March 31, 2019								March 31, 2019
	Carrying Value		Level 1		Level 2		Level 3		Total Losses
	(In thousands)
Other real estate owned	$	43	$	-	$	-	$	43	$	-
Impaired loans:
Commercial		6,342		-		-		6,342		-
Commercial real estate		4,100		-		-		4,100		-
Residential real estate		197		-		-		197		-
Consumer installment and other		77		-		-		77		-
Total assets measured at fair value on a nonrecurring basis	$	10,759	$	-	$	-	$	10,759	$	-

									For the Year Ended
	At December 31, 2018								December 31, 2018
	Carrying Value		Level 1		Level 2		Level 3		Total Losses
	(In thousands)
Other real estate owned	$	350	$	-	$	-	$	350	$	-
Impaired loans:
Commercial		6,437		-		-		6,437		-
Commercial real estate		3,870		-		-		3,870		(240	)
Total assets measured at fair value on a nonrecurring basis	$	10,657	$	-	$	-	$	10,657	$	(240	)

Fair Value, by Balance Sheet Grouping [Table Text Block]

	At March 31, 2019
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2 )		Significant Unobservable Inputs (Level 3 )
Financial Assets:	(In thousands)
Cash and due from banks	$	421,788	$	421,788	$	421,788	$	-	$	-
Debt securities held to maturity		923,190		920,603		-		920,603		-
Loans		1,184,367		1,213,251		-		-		1,213,251
Financial Liabilities:
Deposits	$	4,792,584	$	4,788,497	$	-	$	4,603,369	$	185,128
Short-term borrowed funds		58,317		58,317		-		58,317		-

	At December 31, 2018
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2 )		Significant Unobservable Inputs (Level 3 )
Financial Assets:	(In thousands)
Cash and due from banks	$	420,284	$	420,284	$	420,284	$	-	$	-
Debt securities held to maturity		984,609		971,445		-		971,445		-
Loans		1,185,851		1,184,770		-		-		1,184,770
Financial Liabilities:
Deposits	$	4,866,839	$	4,862,668	$	-	$	4,671,588	$	191,080
Short-term borrowed funds		51,247		51,247		-		51,247		-