Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
Statutory rate	21.00%	21.00%	35.00%
Effect of tax cuts and jobs act - Deferred federal	$ 0.0	$ 1.5	$ 6.2
Income before income taxes for U.S. operations	143.6	106.6	139.9
Income before income taxes for foreign operations	3.2	(11.6)	(9.8)
Net operating loss carryforwards - domestic	22.0
Remaining state loss carryforwards	0.6
Net operating loss carryforwards - foreign	36.9
Additions for tax positions of prior years	0.0	0.1	0.2
Unrecognized tax benefits including interest and penalties that would affect the Company's effective tax rate if recognized		0.5	1.9
Unrecognized tax benefits, reduction resulting from statute of limitations	0.5	0.9	0.3
Total accrued interest and penalties related to uncertain tax positions	0.0	0.0	0.9
Increase (decrease) in income tax expense related to interest and penalties on unrecognized tax benefits	0.0	$ 0.9	$ 1.5
Undistributed earnings of foreign subsidiaries	$ 79.4