Net Income (Loss) per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Numerator
Net (loss) income	$ (4,202)	$ 5,284
Preferred stock dividends earned, net of forfeits	(93)	(186)
Numerator for diluted EPS – net (loss) income attributable to common stockholders	$ (4,295)	$ 5,098
Weighted-average shares outstanding
Basic EPS	17,521	2,092
Effect of dilutive convertible preferred stock and warrants		5,470,153
Denominator for diluted EPS	17,521	5,472,245
Basic EPS	$ (0.25)	$ 2.44
Diluted EPS	$ (0.25)	$ 0.00