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Series B Mandatorily Redeemable Preferred Stock (Details) - Mandatorily Redeemable Preferred Stock [Member] - Series B Preferred Stock [Member] - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2015
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) 16,600 16,600  
Preferred shares issued (value) $ 16,600,000 $ 16,600,000  
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% 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 $ 230,000 $ 460,000  
Preferred Stock, Redemption Date   Nov. 01, 2015