Consolidated Statements of Shareholders' Equity (unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Preferred Stock Series B [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2011	$ 32,000	$ 1,062	$ 98,842	$ 7,752	$ (3,286)	$ 25,467	$ 161,837
Balance (in shares) at Dec. 31, 2011	32,000	10,615,983
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	0	0	0	0	0	8,013	8,013
Dividends on Series B Preferred Stock	0	0	0	0	0	(1,180)	(1,180)
Dividends on common stock, $0.14 per share	0	0	0	0	0	(2,198)	(2,198)
Exercise of stock options	0	1	95	0	0	0	96
Exercise of stock options (in shares)	0	13,571
Stock option and restricted stock compensation expense	0	0	129	0	0	0	129
Change in accumulated other comprehensive income	0	0	0	1,638	0	0	1,638
Balance at Sep. 30, 2012	$ 32,000	$ 1,063	$ 99,066	$ 9,390	$ (3,286)	$ 30,102	$ 168,335
Balance (in shares) at Sep. 30, 2012	32,000	10,629,554