Note 21 - Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

	2014												2013
	4th			3rd			2nd			1st			4th		3rd		2nd		1st
	(In thousands, except per share data)
Quarterly operating data:
Interest income	$	49,171		$	49,177		$	49,569		$	49,211		$	50,294	$	49,851	$	50,295	$	50,086
Interest expense		12,057			17,220			12,740			12,724			13,058		12,866		12,999		15,940
Net interest income		37,114			31,957			36,829			36,487			37,236		36,985		37,296		34,146
Provision (benefit) for loan losses		(3,192	)		(618	)		(1,092	)		(1,119	)		1,000		3,435		3,500		6,000
Other operating income		(576	)		7,123			1,986			1,710			1,064		945		2,199		5,348
Other operating expense		21,685			21,437			20,624			22,093			18,894		19,050		20,213		22,419
Income before income tax expense		18,045			18,261			19,283			17,223			18,406		15,445		15,782		11,075
Income tax expense		6,988			7,060			7,598			6,927			6,458		6,024		6,155		4,319
Net income	$	11,057		$	11,201		$	11,685		$	10,296		$	11,948	$	9,421	$	9,627	$	6,756
Basic earnings per common share	$	0.38		$	0.38		$	0.39		$	0.34		$	0.40	$	0.32	$	0.32	$	0.22
Diluted earnings per common share	$	0.38		$	0.38		$	0.39		$	0.34		$	0.40	$	0.32	$	0.32	$	0.22
Dividends per common share	$	0.15		$	0.15		$	0.15		$	0.15		$	0.13	$	0.13	$	0.13	$	0.13
Average common shares outstanding for:
Basic earnings per share		29,343			29,772			30,059			29,984			29,762		29,773		30,213		30,449
Diluted earnings per share		29,366			29,796			30,090			30,022			29,802		29,805		30,235		30,481