CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Balance at Dec. 31, 2008	$ 107,019	$ 148	$ 64,440	$ (415)	$ 42,846
Balance (in shares) at Dec. 31, 2008		14,813,912
Increase (Decrease) in Stockholders' Equity
Stock options exercised	20		20
Stock options exercised (in shares)		5,082
Restricted shares granted (in shares)		7,200
Restricted shares forfeited (in shares)		(3,249)
Issuance of common stock pursuant to Employee Stock Purchase Plan	253	1	252
Issuance of common stock pursuant to Employee Stock Purchase Plan (in shares)		60,045
Stock-based compensation expense	1,987		1,987
Net (loss) income	4,649				4,649
Foreign currency translation adjustments, net of tax	901			901
Unrealized loss on investments available for sale, net of tax	49			49
Change in fair value of derivative instruments, net of tax	1,838			1,838
Balance at Dec. 31, 2009	116,716	149	66,699	2,373	47,495
Balance (in shares) at Dec. 31, 2009		14,882,990
Increase (Decrease) in Stockholders' Equity
Stock options exercised	175	1	174
Stock options exercised (in shares)		49,369
Restricted shares granted		1	(1)
Restricted shares granted (in shares)		150,545
Restricted shares forfeited (in shares)		(27,019)
Shares withheld for taxes on restricted stock vestings (in shares)		(841)
Issuance of common stock pursuant to Employee Stock Purchase Plan	242		242
Issuance of common stock pursuant to Employee Stock Purchase Plan (in shares)		61,985
Stock-based compensation expense	2,108		2,108
Net (loss) income	(19,383)				(19,383)
Foreign currency translation adjustments, net of tax	568			568
Change in fair value of derivative instruments, net of tax	221			221
Balance at Dec. 31, 2010	100,647	151	69,222	3,162	28,112
Balance (in shares) at Dec. 31, 2010	15,117,029	15,117,029
Increase (Decrease) in Stockholders' Equity
Stock options exercised	111		111
Stock options exercised (in shares)		27,596
Restricted shares granted		2	(2)
Restricted shares granted (in shares)		177,321
Restricted shares forfeited		(1)	1
Restricted shares forfeited (in shares)		(122,439)
Shares withheld for taxes on restricted stock vestings	(34)		(34)
Shares withheld for taxes on restricted stock vestings (in shares)		(8,131)
Issuance of common stock pursuant to Employee Stock Purchase Plan	158		158
Issuance of common stock pursuant to Employee Stock Purchase Plan (in shares)		58,453
Stock-based compensation expense	1,602		1,602
Net (loss) income	(26,462)				(26,462)
Foreign currency translation adjustments, net of tax	(162)			(162)
Change in fair value of derivative instruments, net of tax	(1,498)			(1,498)
Balance at Dec. 31, 2011	$ 74,362	$ 152	$ 71,058	$ 1,502	$ 1,650
Balance (in shares) at Dec. 31, 2011	15,249,829	15,249,829