Net Income (Loss) per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Numerator
Net loss	$ (7,697)	$ 4,714	$ (2,413)	$ (1,795)
Preferred stock dividends forfeited (earned)	(76)	78	(76)	78
Numerator for basic EPS net income (loss) attributable to common stockholders	(7,773)	4,792	(2,489)	(1,717)
Effect of dilutive securities:
Preferred stock dividends
Numerator for diluted EPS - net income (loss) attributable to common stockholders	$ (7,773)	$ 4,792	$ (2,489)	$ (1,717)
Weighted-average shares outstanding:
Basic EPS	11,603	12,389	6,886	6,700
Effect of dilutive convertible preferred stock and warrants		544,482
Denominator for diluted EPS	11,603	556,871	6,886	6,700
Basic EPS	$ (0.67)	$ 0.39	$ (0.36)	$ (0.26)
Diluted EPS	$ (0.67)	$ 0.01	$ (0.36)	$ (0.26)