Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts Payable and Accrued Liabilities, Current [Abstract]
Trade accounts payable	$ 56,636	$ 74,967
Accrued professional fees	1,268	2,247
Income taxes payable	3,429	4,094
Sales taxes payable	3,431	3,385
Other accrued liabilities	0	42
Accounts payable and accrued liabilities	$ 64,764	84,735
Long-term accrued income taxes		$ 15,000