Accrued Expenses and Other Current Liabilities - Tabular Disclosure (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accrued Expenses
Salaries	$ 1,582	$ 2,973
Accrued vacation	3,007	2,540
Accrued incentive compensation	3,672	11,760
Other employee benefits	2,084	1,260
Professional fees	2,036	1,421
Accrued interest	2,105	301
Other	4,233	10,210
Total accrued expenses and other current liabilities	$ 18,719	$ 30,465