Fair Value Measurement - Schedule of Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jul. 16, 2019
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warrant	$ 5,254
Less: Unamortized discount and deferred financing costs	(10,417)
Total	210,439
Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warrant	0
Less: Unamortized discount and deferred financing costs	(5,258)
Total	209,361
Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warrant	5,254
Less: Unamortized discount and deferred financing costs	(5,159)
Total	1,078
Term loan facility | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of credit, fair value	91,590
Derivative	442
Term loan facility | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of credit, fair value	91,590
Derivative	0
Term loan facility | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of credit, fair value	0
Derivative	442
ABL Credit Agreement | Revolving credit facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less: Unamortized discount and deferred financing costs		$ (300)
ABL Credit Agreement | Revolving credit facility | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of credit, fair value	123,029
Derivative	541
ABL Credit Agreement | Revolving credit facility | Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of credit, fair value	123,029
Derivative	0
ABL Credit Agreement | Revolving credit facility | Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Line of credit, fair value	0
Derivative	$ 541