Leases - Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Lease, Cost [Abstract]
Operating cash flows for operating leases	$ 2,919	$ 2,611	$ 8,417	$ 7,395
Finance cash flows for finance leases	2	290	291	870
Operating right-of-use assets obtained in exchange for lease obligations during the current period	$ 926	$ 7,155	$ 5,624	$ 14,312