Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Taxes
Foreign operating loss carryforwards	$ 74.2
Valuation allowance	23.7
Net operating losses subject to expiration	6.3
Other (expense) income
Income Taxes
Income tax expense (benefit)	$ 4.2	$ (45.2)	$ (15.0)