Condensed Consolidated Statements of Stockholders' Equity (unaudited) (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2011	$ 1,032	$ 55,528	$ (27,430)	$ 85,191	$ 114,321
Balance (in Shares) at Dec. 31, 2011	10,322,000
Comprehensive income			(44)	1,791	1,747
Issuance of common stock through stock plan transactions	1	112			113
Issuance of common stock through stock plan transactions (in Shares)	11,000
Issuance of restricted stock	13	(13)
Issuance of restricted stock (in Shares)	127,000
Forfeiture of restricted stock (in Shares)	1,000
Release of restricted stock	(1)	(145)			(146)
Release of restricted stock (in Shares)	(14,000)
Share-based compensation		176			176
Common stock subject to rescission rights		80			80
Balance at Mar. 31, 2012	1,045	55,738	(27,474)	86,982	116,291
Balance (in Shares) at Mar. 31, 2012	10,447,000
Balance at Dec. 31, 2012	1,052	57,192	(31,329)	60,956	87,871
Balance (in Shares) at Dec. 31, 2012	10,524,000				10,523,559
Comprehensive income			77	1,238	1,315
Issuance of common stock through stock plan transactions	2	100			102
Issuance of common stock through stock plan transactions (in Shares)	15,000
Issuance of restricted stock (in Shares)	3,000
Forfeiture of restricted stock	(1)	1
Forfeiture of restricted stock (in Shares)	(12,000)				86,500
Release of restricted stock	(1)	(80)			(81)
Release of restricted stock (in Shares)	(12,000)
Share-based compensation		133			133
Common stock subject to rescission rights	(3)	238			235
Common stock subject to rescission rights (in Shares)	(30,000)
Tax deficiency for stock plan transactions		(62)			(62)
Balance at Mar. 31, 2013	$ 1,049	$ 57,522	$ (31,252)	$ 62,194	$ 89,513
Balance (in Shares) at Mar. 31, 2013	10,488,000				10,488,133