Leases - Supplemental Cash Flow (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating cash flow from operating leases	$ 3,906	$ 4,578
ROU assets obtained in exchange for lease obligations, operating leases	0	24,212
Reductions to ROU assets resulting from reductions to lease obligations, operating leases	3,239	3,428
Increases to ROU assets resulting from remeasurement of lease obligations	$ 3,929	$ 0
Weighted average remaining lease term, operating lease	7 years 1 month 6 days	4 years
Weighted average discount rate, operating lease	4.94%	4.49%