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Series B Mandatorily Redeemable Preferred Stock (Details) - Redeemable Convertible Preferred Stock Series B [Member] - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2015
Dec. 31, 2014
Aug. 31, 2014
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]        
Financial Instruments Subject to Mandatory Redemption, Capital Contributions       $ 40,000,000
Preferred stock shares issued (in shares) 30,000 30,000 16,600  
Preferred shares issued (value) $ 30,000,000 $ 30,000,000    
Preferred Stock, Redemption Date   Nov. 01, 2015    
Preferred stock, par or stated value (in dollars per share) $ 0.01 $ 0.01 $ 0.01  
Liquidation preference per share (in dollars per share) $ 1,000 $ 1,000 $ 1,000  
Financial Instruments Subject to Mandatory Redemption, Return On Funds Invested 14.00% 14.00%    
Financial Instruments Subject to Mandatory Redemption, Monthly Payout, Percent   10.00%    
Financial Instruments Subject to Mandatory Redemption, Monthly Percent Accrued 4.00% 4.00%    
Deferred financing costs $ 2,700,000 $ 2,700,000    
Interest expense $ 241,000 $ 700,000