Long-term Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Short-term Debt [Line Items]
Long-term debt, net	$ 105,013	$ 74,531
Note Purchase Agreement | Senior Notes
Short-term Debt [Line Items]
Face amount	110,000	80,000
Front end fees	(903)	(1,030)
Debt issuance costs	(4,084)	(4,439)
Long-term debt, net	$ 105,013	$ 74,531