Note 7 - Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2015

Fair Value Disclosures [Abstract]

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

			Fair Value Measurements Using:
			Quoted Prices		Significant
			in Active		Other		Significant
			Markets for		Observable		Unobservable
			Identical Assets		Inputs		Inputs
September 30, 2015:	Total		(Level 1)		(Level 2)		(Level 3)
Available-for-Sale Securities:	(in thousands)
State and municipals	$	427,493	$	-	$	427,493	$	-
Pass-through mortgage securities		156,226		-		156,226		-
Collateralized mortgage obligations		168,317		-		168,317		-
	$	752,036	$	-	$	752,036	$	-
December 31, 2014:
Available-for-Sale Securities:
State and municipals	$	411,797	$	-	$	411,797	$	-
Pass-through mortgage securities		131,181		-		131,181		-
Collateralized mortgage obligations		231,167		-		231,167		-
	$	774,145	$	-	$	774,145	$	-

Fair Value Measurements, Nonrecurring [Table Text Block]

			Fair Value Measurements Using:
			Quoted Prices		Significant
			in Active		Other		Significant
			Markets for		Observable		Unobservable
			Identical Assets		Inputs		Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
December 31, 2014:	(in thousands)
Impaired loans:
Residential mortgages - closed end	$	173	$	-	$	-	$	173

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

	Level of	September 30, 2015				December 31, 2014
	Fair Value	Carrying				Carrying
	Hierarchy	Amount		Fair Value		Amount		Fair Value
		(in thousands)
Financial Assets:
Cash and cash equivalents	Level 1	$	33,364	$	33,364	$	32,944	$	32,944
Held-to-maturity securities	Level 2		16,771		17,553		21,119		22,156
Held-to-maturity securities	Level 3		1,917		1,917		714		714
Loans	Level 3		2,077,369		2,079,464		1,781,425		1,765,202
Restricted stock	Level 1		21,174		21,174		23,304		23,304
Accrued interest receivable:
Investment securities	Level 2		4,792		4,792		4,689		4,689
Loans	Level 3		5,302		5,302		4,355		4,355
Financial Liabilities:
Checking deposits	Level 1		766,427		766,427		655,753		655,753
Savings, NOW and money market deposits	Level 1		1,215,675		1,215,675		1,000,325		1,000,325
Time deposits	Level 2		322,470		327,853		328,947		333,992
Short-term borrowings	Level 1		63,100		63,100		136,486		136,486
Long-term debt	Level 2		356,862		358,880		345,000		348,519
Accrued interest payable:
Checking, savings, NOW and money market deposits	Level 1		34		34		27		27
Time deposits	Level 2		4,859		4,859		5,077		5,077
Short-term borrowings	Level 1		1		1		1		1
Long-term debt	Level 2		611		611		667		667