Net Income (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended		386 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012
Weighted-average number of common shares and dilutive common stock equivalent shares outstanding:
Net income (loss)	$ (49,554)	$ (4,020)	$ (59,220)	$ (908)	$ (369,184)
Weighted-average number of shares of common stock and common stock equivalents outstanding:
Weighted-average number of common shares outstanding for computing basic earnings per share	22,824	22,623	22,691	21,254
Dilutive effect of warrants and stock options after application of the treasury stock method
Weighted-average number of common shares outstanding for computing diluted earnings per share	22,824	22,623	22,691	21,254
Net income (loss) per share - basic	$ (2.17)	$ (0.18)	$ (2.61)	$ (0.04)
Net income (loss) per share - dilutive	$ (2.17)	$ (0.18)	$ (2.61)	$ (0.04)