Consolidated Statements Of Changes in Stockholders' Equity (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, 2009	$ 992	$ 52,580	$ (20,505)	$ 61,029	$ 94,096
Balance (in Shares) at Dec. 31, 2009	9,923,000
Comprehensive income			(1,186)	12,705	11,519
Issuance of common stock through stock plan transactions	17	1,463			1,480
Issuance of common stock through stock plan transactions (in Shares)	171,000
Issuance of restricted stock	3	(3)
Issuance of restricted stock (in Shares)	30,000
Repurchased shares	(4)	(546)			(550)
Repurchased shares (in Shares)	(40,000)
Forfeiture of restricted stock	(2)	2
Forfeiture of restricted stock (in Shares)	(24,000)
Release of restricted stock	(2)	(219)			(221)
Release of restricted stock (in Shares)	(20,000)
Share-based compensation		718			718
Tax benefit from stock plan transactions		143			143
Balance at Dec. 31, 2010	1,004	54,138	(21,691)	73,734	107,185
Balance (in Shares) at Dec. 31, 2010	10,040,000
Comprehensive income			(5,739)	11,457	5,718
Issuance of common stock through stock plan transactions	28	1,803			1,831
Issuance of common stock through stock plan transactions (in Shares)	281,000
Issuance of restricted stock	5	(5)
Issuance of restricted stock (in Shares)	50,000
Repurchased shares	(2)	(309)			(311)
Repurchased shares (in Shares)	(21,000)
Forfeiture of restricted stock	(2)	2
Forfeiture of restricted stock (in Shares)	(15,000)
Release of restricted stock	(1)	(183)			(184)
Release of restricted stock (in Shares)	(13,000)
Share-based compensation		686			686
Common stock subject to rescission rights		(1,194)			(1,194)
Tax benefit from stock plan transactions		590			590
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
Balance at Dec. 31, 2010	1,004	54,138	(21,691)	73,734	107,185
Balance (in Shares) at Dec. 31, 2010	10,040,000
Comprehensive income			(3,899)	(24,235)	(28,134)
Issuance of common stock through stock plan transactions	6	425			431
Issuance of common stock through stock plan transactions (in Shares)	63,000
Issuance of restricted stock	18	(18)
Issuance of restricted stock (in Shares)	184,000
Forfeiture of restricted stock	(3)	3
Forfeiture of restricted stock (in Shares)	(28,000)
Release of restricted stock	(1)	(163)			(164)
Release of restricted stock (in Shares)	(17,000)
Share-based compensation		677			677
Common stock subject to rescission rights		787			787
Tax benefit from stock plan transactions		(47)			(47)
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