Debt - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Oct. 04, 2017
Debt Instrument [Line Items]
Deferred financing costs	$ 2,731
Senior Secured Term Loan Facility | Secured Debt
Debt Instrument [Line Items]
Deferred financing costs	$ 2,700
Weighted average interest rate (as a percent)	4.00%
Interest expense	$ 2,100
Deferred financing costs amortization	$ 100
Interest rate above applicable rate (as a percent)		2.00%