Consolidated Statements Of Changes In Stockholders' Equity And Comprehensive Income (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings (Deficit) [Member]	Total
Balance at Dec. 31, 2008	$ 153	$ 92,825	$ (1,092)	$ 30,981	$ 122,867
Balance,shares at Dec. 31, 2008	15,320,612
Comprehensive loss:
Net loss	0	0	0	(16,869)	(16,869)
Net unrealized losses on interest rate swaps, net of tax	0	0	(55)	0	(55)
Net derivative losses reclassified to earnings, net of tax	0	0	882	0	882
Total comprehensive loss	0	0	0	0	(16,042)
Employee stock purchase and option plans	1	416	0	0	417
Employee stock purchase and option plans, shares	42,352
Repurchases of common stock	0	(572)	0	0	(572)
Repurchases of common stock, shares	(38,938)
Stock-based compensation	0	3,528	0	0	3,528
Stock-based compensation,shares	73,067
Balance at Dec. 31, 2009	154	96,197	(265)	14,112	110,198
Balance,shares at Dec. 31, 2009	15,397,093
Comprehensive loss:
Net loss	0	0	0	(10,066)	(10,066)
Net unrealized losses on interest rate swaps, net of tax	0	0	(110)	0	(110)
Net derivative losses reclassified to earnings, net of tax	0	0	191	0	191
Total comprehensive loss	0	0	0	0	(9,985)
Employee stock purchase and option plans	1	169	0	0	170
Employee stock purchase and option plans, shares	27,140
Repurchases of common stock	0	(1,089)	0	0	(1,089)
Repurchases of common stock, shares	(54,922)
Stock-based compensation	0	3,628	0	0	3,628
Stock-based compensation,shares	88,691
Balance at Dec. 31, 2010	155	98,905	(184)	4,046	102,922
Balance,shares at Dec. 31, 2010	15,458,002
Comprehensive loss:
Net loss	0	0	0	(11,588)	(11,588)
Net unrealized losses on interest rate swaps, net of tax	0	0	27	0	27
Net derivative losses reclassified to earnings, net of tax	0	0	157	0	157
Total comprehensive loss	0	0	0	0	(11,404)
Employee stock purchase and option plans	1	1,426	0	0	1,427
Employee stock purchase and option plans, shares	139,228
Repurchases of common stock	0	(3,092)	0	0	(3,092)
Repurchases of common stock, shares	(62,543)
Stock-based compensation	0	3,146	0	0	3,146
Stock-based compensation,shares	67,445
Repurchases of convertible notes	0	(500)	0	0	(500)
Balance at Dec. 31, 2011	$ 156	$ 99,885	$ 0	$ (7,542)	$ 92,499
Balance,shares at Dec. 31, 2011	15,602,132