Quarterly report pursuant to Section 13 or 15(d)

Debt - Schedule of Debt (Details)

v3.10.0.1
Debt - Schedule of Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Dec. 05, 2017
Debt Instrument [Line Items]      
Carrying value $ 309,024    
Term Loan      
Debt Instrument [Line Items]      
Principal outstanding 116,524 $ 120,356  
Unamortized debt issuance costs (149) (185)  
Unamortized discount (186) (233)  
Carrying value 116,189 119,938  
Term Loan | Delayed Draw Term Loan      
Debt Instrument [Line Items]      
Principal outstanding 192,500 198,750  
Unamortized debt issuance costs (393) (490)  
Unamortized discount (659) (821)  
Carrying value $ 191,448 $ 197,439 $ 200,000