Note 17 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Inventory	$ 3.7	$ 4.5
Compensation and employee benefits	14.8	14.0
Warranty reserves	2.2	2.3
Allowance for doubtful accounts and deferred revenue	2.3	2.3
Operating lease liabilities	8.2	11.2
Tax loss carryforwards	7.7	9.6
Tax credit carryforwards	4.5	3.6
Other	0.7	2.5
Gross deferred tax assets	44.1	50.0
Less: valuation allowance	(4.8)	(7.5)
Total net deferred tax assets	39.3	42.5
Operating lease assets	8.1	11.2
Fixed assets	13.0	14.0
Goodwill and intangible assets	23.0	41.5
Total deferred tax liabilities	44.1	66.7
Net deferred tax liabilities	$ (4.8)	$ (24.2)