Hosting Arrangements (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Hosting Arrangements
Hosting arrangements, Capitalized costs	$ 12.7	$ 7.7
Hosting arrangements, Accumulated amortization	0.7	0.3
Hosting arrangements, Amortization	$ 0.3	0.3
Impairment of capitalized implementation costs		$ 1.6