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Significant Accounting Policies (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2023

Dec. 31, 2023

Accounting Policies [Abstract]

Schedule of Product Warranty Liability

Warranty liabilities are included in Other current liabilities and Other long-term liabilities in the consolidated balance sheets. Change in our warranty liability were as follows (in millions):

						2023						2022						2021
January 1						$	10.6					$	12.7					$	9.8
Provision for warranty						9.3						8.8						14.8
Actual warranty costs						(11.5)						(10.9)						(11.9)
December 31						$	8.4					$	10.6					$	12.7

Schedule of Weighted Average Number of Shares

The weighted average number of common shares outstanding used to calculate basic and diluted earnings (loss) per share, and the anti-dilutive shares that are excluded from the diluted earnings (loss) per share calculation are as follows (in thousands):

						Year Ended December 31,
						2023						2022						2021
Basic weighted average shares common outstanding						29,209						29,785						29,831
Effect of potentially dilutive stock options, restricted
stock and performance stock awards						—						—						377
Diluted weighted average common shares outstanding						29,209						29,785						30,208
Anti-dilutive shares						212						325						33

Accounts Receivable, Allowance for Credit Loss

Changes in our allowance for credit losses were as follows (in millions):

December 31,			2023			2022			2021
Beginning balance			$	15.0		$	15.1		$	19.8
Provision for expected credit losses			0.5			1.7			1.4
Write-offs charged against the allowance			(1.2)			(1.9)			(6.4)
Recoveries collected			0.6			0.1			0.3
Ending balance			$	14.9		$	15.0		$	15.1

Schedule of Error Corrections and Prior Period Adjustments

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Tabular disclosure of allowance for credit loss on accounts receivable.

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Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability.

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