CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Unaudited) (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Treasury Stock
Stockholders' Equity Attributable to Parent at Dec. 31, 2011	$ 116,080	$ 13	$ 133,939	$ (17,457)	$ (415)
BALANCE, Beginning period (in shares) at Dec. 31, 2011		12,867
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense (in shares)		0
Restricted stock unit vesting (in shares)		58
Restricted stock grants (in shares)		398
Purchase of treasury shares (in shares)		(10)
Stock-based compensation expense	1,465		1,465	0	0
Restricted stock unit vesting	0		0	0	0
Restricted stock grants	0	0	0	0	0
Purchase of treasury shares	(40)		0	0	(40)
Net loss	(10,538)		0	(10,538)	0
Stockholders' Equity Attributable to Parent at Jun. 30, 2012	106,967	13	135,404	(27,995)	(455)
BALANCE, Ending period (in shares) at Jun. 30, 2012		13,313
Stockholders' Equity Attributable to Parent at Dec. 31, 2012	92,524	13	136,451	(43,196)	(744)
BALANCE, Beginning period (in shares) at Dec. 31, 2012	13,358	13,358
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense (in shares)		0
Restricted stock unit vesting (in shares)		90
Restricted stock grants (in shares)		182
Stock options exercised (in shares)		10
Conversion of convertible debt (in shares)		2
Purchase of treasury shares (in shares)		(154)
Stock-based compensation expense	3,545		3,545	0	0
Restricted stock unit vesting	0		0	0	0
Restricted stock grants	1	1	0	0	0
Adjustments to Additional Paid in Capital, Share-based Compensation and Exercise of Stock Options	122		122	0	0
Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature	37		37	0	0
Purchase of treasury shares	(2,135)		0	0	(2,135)
Net loss	(7,689)		0	(7,689)	0
Stockholders' Equity Attributable to Parent at Jun. 30, 2013	$ 86,405	$ 14	$ 140,155	$ (50,885)	$ (2,879)
BALANCE, Ending period (in shares) at Jun. 30, 2013	13,488	13,488