Leases - Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities: operating cash flows from operating leases	$ 1,680	$ 1,546
Weighted average remaining lease term, operating leases	5 years 10 months 24 days	7 years
Weighted average discount rate, operating leases	6.30%	6.50%