Long-Term Debt - Line of Credit (Details) - USD ($)
 3 Months Ended 7 Months Ended 9 Months Ended
Jun. 01, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Sep. 30, 2016
Sep. 30, 2015
Line of Credit Facility [Line Items]            
Interest expense   $ 3,565,093 $ 3,414,826   $ 10,592,654 $ 7,803,050
Repayments of amounts borrowed on ABL facility         23,500,000 $ 35,000,000
ABL Facility            
Line of Credit Facility [Line Items]            
Interest expense         600,000  
Repayments of amounts borrowed on ABL facility   12,500,000        
Remaining borrowing capacity   185,900,000     $ 185,900,000  
Issuance costs       $ 3,100,000    
Life of ABL facility (in years)         5 years  
Amortization of debt issuance costs         $ 500,000  
Revolving Credit Facility | ABL Facility            
Line of Credit Facility [Line Items]            
Current borrowing capacity $ 200,000,000          
Increase to borrowing capacity 100,000,000          
Maximum borrowing capacity $ 300,000,000          
Commitment fee percentage         0.375%  
Letters of credit outstanding   0     $ 0  
Remaining borrowing capacity   186,600,000     186,600,000  
Revolving Credit Facility | ABL Facility | Minimum            
Line of Credit Facility [Line Items]            
Commitment fee percentage 0.25%          
Revolving Credit Facility | ABL Facility | Maximum            
Line of Credit Facility [Line Items]            
Commitment fee percentage 0.375%          
Revolving Credit Facility | ABL Facility | Federal Funds Effective Rate            
Line of Credit Facility [Line Items]            
Basis spread on variable rate (as a percent) 0.50%          
Revolving Credit Facility | ABL Facility | Federal Funds Effective Rate | Minimum            
Line of Credit Facility [Line Items]            
Basis spread on variable rate (as a percent) 0.25%          
Revolving Credit Facility | ABL Facility | Federal Funds Effective Rate | Maximum            
Line of Credit Facility [Line Items]            
Basis spread on variable rate (as a percent) 0.75%          
Revolving Credit Facility | ABL Facility | LIBOR            
Line of Credit Facility [Line Items]            
Basis spread on variable rate (as a percent) 1.00%          
Revolving Credit Facility | ABL Facility | LIBOR | Minimum            
Line of Credit Facility [Line Items]            
Basis spread on variable rate (as a percent) 1.25%          
Revolving Credit Facility | ABL Facility | LIBOR | Maximum            
Line of Credit Facility [Line Items]            
Basis spread on variable rate (as a percent) 1.75%          
Letter of Credit | ABL Facility            
Line of Credit Facility [Line Items]            
Letters of credit outstanding   $ 700,000     $ 700,000