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Share-based Compensation - Options Information and Valuation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized amount, options	$ 0.1		$ 0.1
Number of stock options exercisable	270,092		270,092
Weighted average exercise price of stock options that are exercisable	$ 12.64		$ 12.64
Remaining contractual life of exercisable stock options			6 years 3 months 18 days
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
Expiration period			10 years
Share-based compensation recognized cost	$ 0.0	$ 0.1	$ 0.2	$ 0.3
Unrecognized cost, period for recognition			4 months