Leases - Supplemental Cash Flow Information Related to Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Cash paid for operating lease liabilities	$ 975	$ 1,500	$ 2,885	$ 4,317
Right-of-use assets obtained in exchange for    lease obligations	$ 1,523	$ 0	$ 12,297	$ 12,955