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
Balance, Beginning period 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 vesting (in shares)		84
Restricted stock grants (in shares)		442
Purchase of treasury shares (in shares)		(55)
Stock-based compensation expense	2,271		2,271
Restricted stock vesting	0
Restricted stock grants	0
Purchase of treasury shares	(307)				(307)
Net loss	(13,749)			(13,749)
Balance, Ending period at Sep. 30, 2012	104,295	13	136,210	(31,206)	(722)
BALANCE, Ending period (in shares) at Sep. 30, 2012		13,338
Balance, Beginning period 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 vesting (in shares)		155
Restricted stock grants (in shares)		174
Stock options exercised (in shares)		16
Conversion of convertible debt (in shares)		608
Purchase of treasury shares (in shares)		(282)
Stock-based compensation expense	4,721		4,721
Restricted stock vesting	0
Restricted stock grants	1	1
Stock options exercised	205		205
Conversion of convertible debt	10,591		10,591
Purchase of treasury shares	(4,615)				(4,615)
Net loss	(14,991)			(14,991)
Balance, Ending period at Sep. 30, 2013	$ 88,436	$ 14	$ 151,968	$ (58,187)	$ (5,359)
BALANCE, Ending period (in shares) at Sep. 30, 2013	14,029	14,029