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Debt - Additional Information (Details)
3 Months Ended 6 Months Ended
Mar. 31, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Dec. 15, 2016
USD ($)
Debt Instrument [Line Items]        
Loss on early extinguishment of debt     $ 136,000  
Mandatory principal payments   $ 0    
2013 Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Excess cash flow payment $ 12,727,000      
2016 Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Debt instrument, interest rate   4.05%    
Mandatory principal payments   $ 588,000    
Optional prepayment   0    
Term loans outstanding, net of unamortized discount and issuance costs   $ 229,901,000    
2016 Senior Secured Credit Facility | Maximum        
Debt Instrument [Line Items]        
Leverage ratio under debt covenant   2.75    
2013 Senior Secured Credit Facility | 2013 Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Loss on early extinguishment of debt     $ 136,000  
Term loan | 2016 Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Credit facility, borrowing capacity       $ 235,000,000
Revolving loan facility | 2016 Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Credit facility, borrowing capacity       $ 10,000,000
Revolving loan facility commitment fee on average daily amount of unused portion   0.50%    
Amounts drawn on line of credit   $ 0    
LIBOR loans | 2016 Senior Secured Credit Facility | London Interbank Offered Rate (LIBOR)        
Debt Instrument [Line Items]        
Variable interest rate floor   0.75%    
LIBOR loans | 2016 Senior Secured Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum        
Debt Instrument [Line Items]        
Basis spread on variable rate   2.75%