Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Schedule of Related Party Transactions [Table Text Block]

(In thousands) Years Ended December 31,	2015		2014		2013
Legal fees	$	221	$	212	$	169
Commissions and fees related to the sale of repossessed commercial real estate and property management		9		10		9
Insurance premiums/commissions		1		8		8
Other		5		9		6
Total	$	236	$	239	$	192

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

(In thousands, except per share data) Years Ended December 31,	2015		2014		2013
Net income, basic and diluted	$	14,992	$	16,459	$	13,446
Less preferred stock dividends and discount accretion		395		1,927		1,951
Net income available to common shareholders, basic and diluted	$	14,597	$	14,532	$	11,495
Average common shares outstanding, basic and diluted		7,494		7,483		7,474
Net income per common share, basic and diluted	$	1.95	$	1.94	$	1.54

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

	ESPP
	2015			2014			2013
Expected volatility		32.6	%		37.4	%		45.7	%
Dividend yield		-			-			-
Risk-free interest rate		.02			.04			.06
Expected life (in years)		.25			.25			.25
Fair value	$	5.08		$	4.69		$	4.01