Debt - Components of interest expense (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Debt Instrument [Line Items]
Interest expense incurred on Notes Due to Affiliates		$ 1,955
Interest incurred on capital lease and other financing obligations	$ 16
Interest expense incurred on ABL facilities and Notes	8,980	1,741
Amortization of deferred financing costs	904	315
Amortization of original issue discount	122	21
Interest expense , net	10,022	4,031	$ 4,031
Senior Secured Notes 2024
Debt Instrument [Line Items]
Amortization of deferred financing costs	589	103
New ABL Facility
Debt Instrument [Line Items]
Amortization of deferred financing costs	214	37
Algeco ABL facility
Debt Instrument [Line Items]
Amortization of deferred financing costs	$ 101	$ 174