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Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Employee Equity-Based Compensation Expense

			For The Years Ended December 31,
			2023			2022			2021
Total stock-based compensation expense			$	9.9		$	12.7		$	9.1
Income tax benefit related to stock-based compensation			1.3			3.3			2.3
Impact on cash flow due to taxes paid related to net share settlement of equity awards			4.7			2.5			1.7
Intrinsic value of options exercised, equity-based liabilities paid, and the fair value of restricted stock units vested			14.7			9.5			3.7

Summary of Status of Outstanding RSU Awards

A summary of the status of outstanding restricted stock units as of December 31, 2023, and changes during the year, is presented below:

			Time Vested						Performance-based
			Shares			Weighted Average Grant Date Fair Value			Shares			Weighted Average Grant Date Fair Value
Restricted stock units outstanding at December 31, 2022			429,465			$	29.16		277,110			$	29.64
Granted			216,379			37.66			196,453			40.47
Vested			(177,804)			29.28			(211,944)			22.24
Forfeited			(65,633)			33.74			(36,515)			35.43
Restricted stock units outstanding at December 31, 2023			402,407			$	32.97		225,104			$	36.54

Summary of Status of Outstanding Stock Option Awards and Changes During the Year

A summary of the status of outstanding stock option awards as of December 31, 2023, and changes during the year, is presented below:

			Shares			Weighted Average Exercise Price			Weighted Average Remaining Contractual Life (Years)			Aggregate Intrinsic Value
Outstanding options at December 31, 2022			294,124			$	50.53		3.3			$	—
Exercised			—			—
Expired			(8,442)			50.73
Outstanding and exercisable options at December 31, 2023			285,682			$	50.53		2.3			$	—

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- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

+ References

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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Tabular disclosure of the changes in outstanding nonvested restricted stock units.

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for exercisable or convertible options that are fully vested and expected to vest. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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