Leases (Narrative) (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Short term lease expense description	not material	not material	not material
Variable lease cost description	not material	not material	not material
Leases not yet commenced	we did not have any material leases that have not yet commenced