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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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- Definition Tabular disclosure of prior period adjustments to previously issued financial statements including (1) the effect of the correction on each financial statement line item and any per-share amounts affected for each prior period presented (2) the cumulative effect of the change on retained earnings or other appropriate components of equity or net assets in the statement of financial position, as of the beginning of the earliest period presented, and (3) the effect of the prior period adjustments (both gross and net of applicable income tax) on the net income of each prior period presented in the entity's annual report for the year in which the adjustments are made. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-7 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483443/250-10-50-9 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482425/460-10-50-8 + Details
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