Liabilities - Components of Accounts Payable, Accrued Expenses, and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Accounts payable	$ 32,300	$ 32,878
Accrued expenses	12,575	10,092
Other current liabilities	5,154	5,757
Accounts payable, accrued expenses and other current liabilities	$ 50,029	$ 48,727