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	Retained Earnings (Deficit)
Balance at Dec. 31, 2010	$ 100,647	$ 151	$ 69,222	$ 3,162	$ 28,112
Balance (in shares) at Dec. 31, 2010		15,117,029
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock options exercised	111	0	111
Stock options exercised (in shares)		27,596
Restricted shares granted	0	2	(2)
Restricted shares granted (in shares)		177,321
Restricted shares forfeited	0	(1)	1
Restricted shares forfeited (in shares)		(122,439)
Shares withheld for taxes on restricted stock vested	(34)	0	(34)
Shares withheld for taxes on restricted stock vested (in shares)		(8,131)
Issuance of common stock pursuant to Employee Stock Purchase Plan	158	0	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	(26,462)				(26,462)
Change in accumulated other comprehensive income	(1,660)			(1,660)
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted shares granted	0	0	0
Restricted shares granted (in shares)		38,126
Restricted shares forfeited	0	0	0
Restricted shares forfeited (in shares)		(38,302)
Shares withheld for taxes on restricted stock vested	0	0	0
Shares withheld for taxes on restricted stock vested (in shares)		(1,023)
Issuance of common stock pursuant to Employee Stock Purchase Plan	103	1	102
Issuance of common stock pursuant to Employee Stock Purchase Plan (in shares)		50,317
Stock-based compensation expense	1,275		1,275
Net loss	(10,488)				(10,488)
Change in accumulated other comprehensive income	1,027			1,027
Balance at Dec. 31, 2012	$ 66,279	$ 153	$ 72,435	$ 2,529	$ (8,838)
Balance (in shares) at Dec. 31, 2012	15,298,947	15,298,947