Income Taxes - Significant components of Deferred Tax Assets And Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Inventory reserves	$ 3.7	$ 3.2
Warranty reserves	2.0	2.0
Credit loss reserves	0.5	0.3
State tax loss carryforwards	11.9	11.6
Accrued vacation	1.4	1.4
Deferred compensation	1.4	1.5
Share-based compensation	2.0	1.5
Goodwill	2.0	2.1
Outside basis difference	0.0	4.7
Foreign net operating loss	4.3	9.5
Lease obligation	0.4	0.9
Employee & Iinsurance accruals	0.8	0.7
Domestic credit carryforwards	1.4	1.6
Deferred revenue	1.3	1.2
Deferred payroll tax - CARES Act	1.1	2.4
Pension and post-employment benefits	0.0	1.0
Valuation allowances	(6.0)	(14.1)	$ (14.6)	$ (8.5)
Other	1.6	0.8
Total deferred tax assets	29.8	32.3
Deferred tax liabilities:
Property and equipment	13.0	14.7
Intangibles	1.1	0.9
Right-of-use assets	0.5	0.9
Pension	0.6	1.3
Total deferred tax liabilities	15.2	17.8
Total net deferred assets	$ 14.6	$ 14.5