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Long-Term Debt and Interest Expense - Narrative (Details) - USD ($)
Jun. 30, 2016
May 31, 2016
Feb. 26, 2016
Feb. 25, 2016
Feb. 17, 2016
Term Loan          
Debt Instrument [Line Items]          
Aggregate principal amount         $ 165,000,000.0
Delayed draw term loan borrowings, maximum         $ 15,000,000.0
Proceeds released upon closing     49.10%    
Initial percentage of collateral subject to a perfected lien, not less than     49.10%    
Additional proceeds released 10.00% 26.00%      
Percentage of collateral subject to a perfected lien, not less than     85.00%    
Remaining percentage of collateral subject to a perfect lien, not less than 95.00%        
Lenders' fees, percentage of principal amount 7.00%        
Modified Facility          
Debt Instrument [Line Items]          
Stated interest rate 13.50%        
Revolving credit facility, borrowing capacity     $ 100,000,000 $ 250,000,000  
Allowable borrowing capacity     $ 180,000,000    
Borrowings $ 0        
Letters of credit outstanding 51,800,000        
Available borrowing capacity $ 22,100,000