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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2024

Share-Based Payment Arrangement [Abstract]

Fair Value of Stock Options Estimated on Grant Date Using Assumptions

The fair value of stock options is estimated on the grant date using the Black-Scholes option pricing model using the following assumptions:

		Year Ended December 31, 2024
		Range				Weighted-Average
Expected volatility		61.4% to 67.0%
Dividend yield			—
Risk-free interest rate		3.6% to 4.5%
Expected term (in years)		5.5 to 7.5
Weighted-average fair value at grant date						$	3.68
		Year Ended December 31, 2023
		Range				Weighted-Average
Expected volatility		34.7% to 38.6%
Dividend yield			—
Risk-free interest rate		3.5% to 4.5%
Expected term (in years)		5.5 to 7.5
Weighted-average fair value at grant date						$	1.49
		Year Ended December 31, 2022
		Range				Weighted-Average
Expected volatility		31.5% to 34.5%
Dividend yield			—
Risk-free interest rate		1.4% to 3.7%
Expected term (in years)		5.5 to 9.1
Weighted-average fair value at grant date						$	1.09

Schedule of Stock Option Activity

Stock option activity for the year ended December 31, 2024 was as follows:

						Weighted-Average
		Number of Options				Exercise Price per Option				Remaining Contractual Term				Aggregate Intrinsic Value
		(thousands)								(years)				(millions)
Outstanding at December 31, 2023			19,791			$	6.25				7.4			$	15.7
Granted			371				5.77
Exercised			(277	)			4.99
Forfeited/Expired			(2,261	)			8.74
Outstanding at December 31, 2024			17,624			$	5.94				6.1			$	6.9
Exercisable at December 31, 2024			8,794			$	7.09				4.7			$	1.4

Schedule of Information Regarding Fully Vested and Expected to Vest Stock Options

Information regarding fully vested and expected to vest stock options as of December 31, 2024 was as follows:

Exercise Price		Number of Options				Weighted Average Remaining Contractual Life
		(share data in thousands)				(years)
$2.87 - $4.66			6,865				7.96
$5.02 - $7.53			6,740				4.25
$8.00 - $12.00			3,132				4.15
$12.47 - $18.71			592				3.66
$22.08 - $33.12			295				2.96
			17,624

Schedule of Restricted Stock Units Activity

RSU activity for the year ended December 31, 2024 was as follows:

(share data in thousands, except per share data)		Number of RSUs (share data in thousands)				Weighted Average Grant Date Fair Value per Share
Unvested balance, December 31, 2023			541			$	5.95
Granted			91				6.59
Forfeited			(18	)			5.49
Vested			(346	)			6.35
Unvested balance, December 31, 2024			268			$	5.71

Schedule of Weighted Average Assumptions Used in Determining Fair Value Performance-based Market Condition Share Awards Outstanding

The weighted average assumptions used in determining the fair value for the performance-based market condition share awards granted in 2020 and 2019 and remeasured at December 31, 2024 were as follows:

		Grant Date				December 31, 2024
Expected volatility			41.7	%			69.8	%
Dividend yield			1.1	%			1.2	%
Risk-free interest rate			1.3	%			3.6	%

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

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