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Series B Mandatorily Redeemable Preferred Stock (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Aug. 31, 2014
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]      
Deferred financing costs $ 2,052,000 $ 1,748,000  
Redeemable Convertible Preferred Stock Series B [Member]      
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) 35,000 16,600  
Preferred stock, par or stated value (in dollars per share) $ 0.01 $ 0.01  
Liquidation preference per share (in dollars per share) $ 1,000 $ 1,000  
Financial Instruments Subject to Mandatory Redemption, Return On Funds Invested 14.00%    
Financial Instruments Subject to Mandatory Redemption, Monthly Payout, Percent 10.00%    
Financial Instruments Subject to Mandatory Redemption, Monthly Percent Accrued 4.00%    
Deferred financing costs $ 3,100,000    
Interest expense $ 951,000 $ 380,000