Summary of Significant Accounting Policies - Revenue Recognition ASC 606 (Details)	12 Months Ended
	Dec. 31, 2021
Maintenance Contracts
Revenue from external customers
Term of contracts	1 year
Consortium Contracts
Revenue from external customers
Term of contracts	3 years
Minimum
Revenue from external customers
Subscription term	1 year
Maximum
Revenue from external customers
Subscription term	3 years