Leases - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating lease cost
Operating lease expense	$ 4,765	$ 4,710
Variable lease expense	3,929	3,556
Finance lease cost
Financing lease right of use assets 1	388	324
Interest on lease liabilities	1,032	969
Total lease expense	10,114	9,559
Other information
Operating cash flows outflows related to operating leases	7,706	6,912
Operating cash flows outflows related to financing leases	809
Financing cash flows outflows related to financing leases	9,182	3,417	$ 379
Right-of-use assets obtained in exchange for new finance lease liabilities	3,827	7,212
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 8,298	$ 1,976
Weighted-average remaining lease term (excluding renewal options) - operating leases	47 years 7 months 6 days	48 years 7 months 6 days
Weighted-average remaining lease term (excluding renewal options) -finance leases	62 years 1 month 6 days	64 years 6 months
Weighted-average discount rate - operating leases	5.60%	5.70%
Weighted-average discount rate - finance leases	5.30%	5.40%