Debt - Components of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Line of Credit Facility [Line Items]
Amortization of deferred financing costs	$ 476	$ 497	$ 966	$ 1,002
Interest Expense	1,487	2,174	4,233	6,392
Verde promissory note
Line of Credit Facility [Line Items]
Interest incurred	0	0	0	230
Other
Line of Credit Facility [Line Items]
Interest incurred	290	162	290	166
Revolving credit facility | Senior credit facility
Line of Credit Facility [Line Items]
Interest incurred	477	1,120	1,904	3,741
Working capital facility
Line of Credit Facility [Line Items]
Letters of credit fees and commitment fees	$ 244	$ 395	$ 1,073	$ 1,253