Commitments and Contingencies (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) director
Contingencies
Number of executive officers with employment agreements | director	4
Period in which additional severance can be paid if there is a change in control	12 months
Other
Standby letters of credit	$ 0
Standby repurchase obligations or other commercial commitments	$ 0
Minimum
Contingencies
Period for severance payments	6 months
Maximum
Contingencies
Period for severance payments	12 months