Shareholders' Deficit (Details) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	10,173
Conversion of preferred stock to common stock	2,333
Issuance of common stock	14,333
Issuance of equity awards	294
Issuance of common stock upon conversion or exchange of Series B Notes	3,470
Ending balance	30,603