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Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended
Mar. 01, 2018
Jan. 30, 2018
May 02, 2017
May 24, 2018
Mar. 14, 2018
Subsequent Event          
Subsequent Event [Line Items]          
Proceeds from Issuance or Sale of Equity   $ 52.5      
Sale of Stock, Number of Shares Issued in Transaction 54,750        
Minimum | Subsequent Event          
Subsequent Event [Line Items]          
Capital Leases and Purchase Money Indebtedness         $ 35.0
Maximum | Subsequent Event          
Subsequent Event [Line Items]          
Capital Leases and Purchase Money Indebtedness         $ 60.0
London Interbank Offered Rate (LIBOR) | Subsequent Event          
Subsequent Event [Line Items]          
Debt Instrument, Basis Spread on Variable Rate   2.25%      
Base Rate | Subsequent Event          
Subsequent Event [Line Items]          
Debt Instrument, Basis Spread on Variable Rate   1.25%      
Series E-1 Preferred Stock [Member] | Subsequent Event          
Subsequent Event [Line Items]          
Proceeds from Issuance or Sale of Equity $ 17.5     $ 17.5  
Sale of Stock, Number of Shares Issued in Transaction 17,500     18,228  
Share issued, price per share (in dollars per share) $ 1,000        
Debt Instrument, Redemption Price, Percentage 103.50%        
Debt Instrument, Redemption Price, Percentage, Option Two 106.50%        
Series E-1 Preferred Stock [Member] | London Interbank Offered Rate (LIBOR)          
Subsequent Event [Line Items]          
Debt Instrument, Basis Spread on Variable Rate     3.00%    
Series E-1 Preferred Stock [Member] | London Interbank Offered Rate (LIBOR) | Minimum          
Subsequent Event [Line Items]          
Debt Instrument, Basis Spread on Variable Rate     5.25%    
Series E-1 Preferred Stock [Member] | London Interbank Offered Rate (LIBOR) | Maximum          
Subsequent Event [Line Items]          
Debt Instrument, Basis Spread on Variable Rate     8.50%    
Series E-1 Preferred Stock, Option 2 [Member] | Subsequent Event          
Subsequent Event [Line Items]          
Sale of Stock, Number of Shares Issued in Transaction 18,228        
Share issued, price per share (in dollars per share) $ 960        
Series E-1 Preferred Stock, Option 3 [Member] | Subsequent Event          
Subsequent Event [Line Items]          
Sale of Stock, Number of Shares Issued in Transaction 19,022        
Share issued, price per share (in dollars per share) $ 920