Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Income (Loss) Before Income Taxes

For financial reporting purposes, income before income taxes includes the following components:

	Years Ended December 31,
(in millions)	2021		2020		2019
United States	$	14.1	$	42.1	$	26.7
Foreign	2.4		3.6		(1.5)
Income before income taxes	$	16.5	$	45.7	$	25.2

Provision (Benefit) for Income Tax

The (benefit) provision for income taxes consists of the following:

	Years Ended December 31,
(in millions)	2021		2020		2019
Current (benefit) provision:
Federal	$	(0.2)	$	(14.0)	$	(0.5)
State	(0.6)		2.4		0.8
Foreign	0.7		1.8		1.0
Total current (benefit) provision	(0.1)		(9.8)		1.3
Deferred (benefit) provision:
Federal	(0.1)		12.3		2.8
State	1.1		(1.4)		(1.0)
Foreign	(2.3)		(2.3)		(0.1)
Total deferred (benefit) provision	(1.3)		8.6		1.7
Total (benefit) provision:
Federal	(0.3)		(1.7)		2.3
State	0.5		1.0		(0.3)
Foreign	(1.6)		(0.5)		0.9
Total income tax (benefit) provision	$	(1.4)	$	(1.2)	$	3.0

Reconciliation of Provision for Income Taxes at Statutory Federal Income Tax Rate

A reconciliation of the (benefit) provision for income taxes at the statutory federal income tax rate to the amount provided is as follows:

	Years Ended December 31,
(in millions)	2021		2020		2019
Tax expense at the statutory federal income tax rate	$	3.5	$	9.6	$	5.3
State income tax, net of federal income tax	1.4		0.3		(2.3)
Research and development tax credits	(4.1)		(4.3)		(6.7)
FIN 48 impact	1.8		4.0		3.2
Liquidation of subsidiary	(0.8)		—		(0.9)
Change in foreign subsidiary net operating loss carryforward	4.4		(0.3)		(1.4)
Valuation allowance impact	(8.1)		(1.0)		5.8
Changes in tax rates	0.7		0.3		0.1
Effects of Cares Act - 2018 NOL carryback	—		(9.5)		—
Share-based compensation	0.4		0.3		1.2
Other items	(0.6)		(0.6)		(1.3)
Total income tax (benefit) provision	$	(1.4)	$	(1.2)	$	3.0

Significant Components of Company's Deferred Tax Assets and Liabilities

Significant components of the Company's deferred tax assets and liabilities are as follows:

	December 31,
(in millions)	2021		2020
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	—		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	—		1.0
Valuation allowances	(6.0)		(14.1)
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

Rollforward of Deferred Tax Assets Valuation Allowance

The following table represents a rollforward of the deferred tax asset valuation allowance for the years ended December 31, 2021, 2020 and 2019:

	Years Ended December 31,
(in millions)	2021		2020		2019
Allowance balance, beginning of year	$	14.1	$	14.6	$	8.5
Provision	0.6		1.5		5.8
Reversals	(8.1)		(1.5)		—
Other	(0.6)		(0.5)		0.3
Allowance balance, end of year	$	6.0	$	14.1	$	14.6

Reconciliation of Unrecognized Tax Benefit

A reconciliation of the beginning and ending unrecognized tax benefits excluding interest and penalties is as follows:

	Years Ended December 31,
(in millions)	2021		2020		2019
Balance, beginning of year	$	9.7	$	5.7	$	2.1
Additions for tax positions taken in current year	1.0		0.5		3.0
Additions for tax positions taken in prior period	0.8		3.5		0.7
Decreases related to sustained tax positions	(0.7)		—		(0.1)
Balance, end of year	$	10.8	$	9.7	$	5.7