Warrants - Common Stock (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended		12 Months Ended			12 Months Ended	0 Months Ended			11 Months Ended		1 Months Ended
	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012 Common Stock	Dec. 31, 2011 Common Stock	Dec. 31, 2013 Common Stock	Dec. 31, 2011 Common Stock ADP ten-year warrants	May 06, 2009 Common Stock ADP ten-year warrants Issued on May 6, 2009	May 06, 2009 Common Stock ADP ten-year warrants Issued on May 6, 2009 Minimum	May 06, 2009 Common Stock ADP ten-year warrants Issued on May 6, 2009 Maximum	Nov. 24, 2010 Common Stock ADP ten-year warrants Issued on November 24, 2010	Mar. 22, 2011 Common Stock ADP ten-year warrants Unissued warrants in dispute	Jun. 30, 2011 Common Stock ADP ten-year warrants Issued in June 2011
Class of Warrant or Right [Line Items]
Warrants outstanding (in shares)					0
Issuance of common stock for the exercise of warrants to purchase common stock (in shares)			130,000	898,447		133,000
Weighted-average exercise price of warrants exercised (in usd per share)			$ 1.60	$ 0.95
Warrants exercisable period							10 years
Number of shares purchasable upon warrant exercise		4,700,000						0	886,096	360,000	443,048	133,000
Warrants exercise price (in usd per share)		80.06					0.53			0.01	0.53	0.53
Value of warrants issued	$ 2,500									$ 2,900		$ 2,500