Convertible Preferred Stock and Stock Warrants (Details) (USD $)	0 Months Ended		3 Months Ended		12 Months Ended
	Feb. 07, 2014	Jun. 14, 2012	Mar. 31, 2014 payment	Mar. 31, 2013	Dec. 31, 2012	Feb. 04, 2011	Aug. 12, 2009
Class of Warrant or Right [Line Items]
Issuance of cumulative convertible preferred stock and warrants							16,000
Issue price of cumulative convertible preferred stock and warrants							$ 1,000
Issuance of detachable warrants to acquire common stock							155
Issuance of detachable Contingent Warrants to acquire common stock							500
Preferred Stock
Convertible Preferred Stock shares issued upon conversion			434.782			434.782
Conversion price of convertible preferred stock			$ 2.30
Cumulative convertible preferred stock, liquidation preference			$ 1,000
Dividends accrued, liquidation preference annual payment rate			15.00%
Number of quarterly dvidend payments			8
Stock Warrants
Change in fair value of warrant liability					$ 2,600,000
Revalued warrant liability		14,000,000
Stock warrants exercised, shares	1,277,250
Common stock issued with warrant exercise, exercise price per share	$ 1.21
Proceeds from exercise of stock warrants	$ 1,500,000		$ 1,545,000	$ 0
Exercisable [Member]
Class of Warrant or Right [Line Items]
Exercise price of the exercisable warrants							2.31
Contingent [Member]
Class of Warrant or Right [Line Items]
Exercise price of the exercisable warrants							2.45
Stock Warrants
Volatility rate		58.10%
Risk-free return rate		0.36%
Expected dividend rate		0.00%