CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY AND COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]
Balance at Dec. 31, 2009	$ 94,096	$ 992	$ 52,580	$ (20,505)	$ 61,029
Balance (in shares) at Dec. 31, 2009		9,923,000
Comprehensive income:
Net income	5,621	0	0	0	5,621
Other comprehensive income, net of tax:
Changes in unrealized loss on derivative instruments	(3)	0	0	(3)	0
Comprehensive income	5,618
Issuance of common stock through stock plan transactions	861	10	851	0	0
Issuance of common stock through stock plan transactions (in shares)		98,000
Issuance of restricted stock	0	3	(3)	0	0
Issuance of restricted stock (in shares)		25,000
Forfeiture of restricted stock	0	(1)	1	0	0
Forfeiture of restricted stock (in shares)		(13,000)
Release of restricted stock	(170)	(2)	(168)	0	0
Release of restricted stock (in shares)		(15,000)
Share-based compensation	364	0	364	0	0
Tax benefit from stock plan transactions	164	0	164	0	0
Balance at Jun. 30, 2010	100,933	1,002	53,789	(20,508)	66,650
Balance (in shares) at Jun. 30, 2010		10,018,000
Balance at Dec. 31, 2010	107,185	1,004	54,138	(21,691)	73,734
Balance (in shares) at Dec. 31, 2010	10,040,029	10,040,000
Comprehensive income:
Net income	4,145	0	0	0	4,145
Other comprehensive income, net of tax:
Settlement of derivative instrument	282	0	0	282	0
Comprehensive income	4,427
Issuance of common stock through stock plan transactions	1,713	26	1,687	0	0
Issuance of common stock through stock plan transactions (in shares)		268,000
Issuance of restricted stock	0	5	(5)	0	0
Issuance of restricted stock (in shares)		46,000
Forfeiture of restricted stock	0	(1)	1	0	0
Forfeiture of restricted stock (in shares)		(9,000)
Repurchased shares	(310)	(2)	(308)	0	0
Repurchased shares (in shares)		(21,000)
Release of restricted stock	(140)	(1)	(139)	0	0
Release of restricted stock (in shares)		(9,000)
Share-based compensation	329	0	329	0	0
Tax benefit from stock plan transactions	575	0	575	0	0
Balance at Jun. 30, 2011	$ 113,779	$ 1,031	$ 56,278	$ (21,409)	$ 77,879
Balance (in shares) at Jun. 30, 2011	10,315,224	10,315,000