Leases - Components of Lease Expenses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
Leases [Abstract]
Operating lease cost	$ 1,184	$ 2,358
Variable lease cost	445	904
Total operating lease cost	1,629	3,262
Finance lease cost:
Amortization of right-of-use assets	42	84
Interest on finance lease liabilities	13	28
Total finance lease cost	$ 55	$ 112