CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2008	$ 239	$ 69,855	$ (1,727)	$ 54,433	$ 122,800
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	0	10,155	10,155
Shares in connection with exercise of options	0	78	23	(6)	95
Shares of restricted stock	2	(2)	0	0	0
Other	(1)	(69)	0	0	(70)
Restricted stock compensation	0	1,672	0	0	1,672
Other	0	(159)	0	0	(159)
Balance at Dec. 31, 2009	240	71,375	(1,704)	64,582	134,493
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	0	12,931	12,931
Shares in connection with exercise of options	0	33	30	0	63
Shares of restricted stock	2	(2)	0	0	0
401k plan contribution	0	414	242	0	656
Restricted stock compensation	0	1,794	0	0	1,794
Other	0	(174)	0	0	(174)
Balance at Dec. 31, 2010	242	73,440	(1,432)	77,513	149,763
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	0	16,389	16,389
Shares in connection with exercise of options	0	57	4	0	61
Shares of restricted stock	0	(25)	24	0	(1)
401k plan contribution	0	589	222	0	811
Restricted stock compensation	0	1,254	0	0	1,254
Other	0	(492)	0	0	(492)
Balance at Dec. 31, 2011	$ 242	$ 74,823	$ (1,182)	$ 93,902	$ 167,785