Other Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Other Accrued Expenses
Accrued personnel costs	$ 10,248	$ 16,915
Accrued interest payable	2,688	5,903
Income tax payable	765	3,505
Accrued corporate legal fees and professional services	146	310
Accrued royalties	6,472	6,038
Accrued variable considerations	9,657	5,748
Purchase of API received not yet invoiced	38
Accrued expenses - other	4,046	3,809
Total	$ 34,060	$ 42,228