Leases - Cash Flow Components (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows related to operating leases	$ (2,462)	$ (2,778)
Financing cash flows related to finance leases	(166)	(408)
Right-of-use assets obtained in exchange for new lease liabilities:
Operating leases	$ 377	$ 7,681