Note 13 - Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2014

Stockholders' Equity Note [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	December 31,
	2014			2013			2012
Net unrealized loss on investment securities available for sale	$	(819	)	$	(2,990	)	$	1,491
Net unrealized defined benefit pension plan actuarial loss		(9,084	)		(7,303	)		(8,208	)
Total accumulated other comprehensive loss, net of tax	$	(9,903	)	$	(10,293	)	$	(6,717	)

Schedule of Dividends Payable [Table Text Block]

Declaration date	Record date	Payment date	Cash dividend per common share
7/17/2014	8/4/2014	8/18/2014	$	0.05
10/16/2014	11/3/2014	11/17/2014		0.05