Leases - Lease Cost - Other Information (Details)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases
Weighted-average remaining lease term - finance lease (in years)	3 years 7 months 6 days	3 years 10 months 24 days	4 years 2 months 12 days
Weighted-average remaining lease term - operating leases (in years)	3 years 3 months 18 days	3 years 10 months 24 days	3 years 1 month 6 days
Weighted-average discount rate - finance lease (as a percent)	4.60%	5.00%	5.00%
Weighted-average discount rate - operating leases (as a percent)	4.90%	4.90%	5.00%