Note 15 - Assets and Liabilities Measured and Reported at Fair Value (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

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

(In thousands)	Fair value at September 30, 2018
Assets	Total		Level 1		Level 2		Level 3
Investment securities available-for-sale
Government sponsored enterprise obligations	$	383,122	$	-	$	383,122	$	-
Mortgage-backed securities - government agencies		135,521		-		135,521		-
Obligations of states and political subdivisions		31,448		-		31,448		-
Total investment securities available-for-sale		550,091		-		550,091		-
Interest rate swaps		2,718		-		2,718		-
Total assets	$	552,809	$	-	$	552,809	$	-
Liabilities
Interest rate swaps	$	1,913	$	-	$	1,913	$	-

(In thousands)	Fair value at December 31, 2017
Assets	Total		Level 1		Level 2		Level 3
Investment securities available-for-sale
U.S. Treasury and other U.S. government obligations	$	149,984	$	149,984	$	-	$	-
Government sponsored enterprise obligations		213,844		-		213,844		-
Mortgage-backed securities - government agencies		161,507		-		161,507		-
Obligations of states and political subdivisions		49,189		-		49,189		-
Total investment securities available-for-sale		574,524		149,984		424,540		-
Interest rate swaps		579		-		579		-
Total assets	$	575,103	$	149,984	$	425,119	$	-
Liabilities
Interest rate swaps	$	259	$	-	$	259	$	-

Fair Value Measurements, Nonrecurring [Table Text Block]

(In thousands)	Fair value at September 30, 2018								Losses for 9 month
									period ended
	Total		Level 1		Level 2		Level 3		September 30, 2018
Collateral dependent impaired loans	$	2,722	$	-	$	-	$	2,722	$	(874	)
Other real estate owned		1,604		-		-		1,604		-
Total	$	4,326	$	-	$	-	$	4,326	$	(874	)

(in thousands)	Fair value at December 31, 2017								Losses for 9 month
									period ended
	Total		Level 1		Level 2		Level 3		September 30, 2017
Collateral dependent impaired loans	$	2,569	$	-	$	-	$	2,569	$	(280	)
Other real estate owned		2,640		-		-		2,640		(171	)
Total	$	5,209	$	-	$	-	$	5,209	$	(451	)

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]

September 30, 2018				Significant	Weighted
	Fair		Valuation	unobservable	average of
(Dollars in thousands)	value		technique	input	input
Impaired loans - collateral dependent	$	2,722	Appraisal	Appraisal discounts		19.7	%
Other real estate owned		1,604	Appraisal	Appraisal discounts		16.4

December 31, 2017				Significant	Weighted
	Fair		Valuation	unobservable	average of
(Dollars in thousands)	value		technique	input	input
Impaired loans - collateral dependent	$	2,569	Appraisal	Appraisal discounts		11.5	%
Other real estate owned		2,640	Appraisal	Appraisal discounts		23.4