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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

Stock Options, Valuation Assumptions

The weighted average assumptions used in our Black-Scholes option pricing model for options granted in 2022, 2021 and 2020 were as follows:

						2022			2021						2020
Dividend yield						0.40% - 0.56%			0.32% - 0.35%						0.44% - 3.77%
Expected volatility						58.14		%	61.62		%				50.00		%
Risk-free interest rate						1.93% - 2.89%			1.10% - 1.21%						0.37% - 1.22%
Expected term in years						6.5 years			6.5 years						6.5 years

Stock Options, Activity

The following table summarizes activity related to stock options during 2022:

						Number of Options						Weighted- Average Exercise Price Per Share						Aggregate Intrinsic Value (thousands)						Weighted Average Remaining Term (Years)
Outstanding at December 31, 2021						1,616,720						$	13.08
Granted						447,562						9.68
Exercised						(25,000)						9.02
Forfeited or expired						(149,115)						13.40
Outstanding at December 31, 2022						1,890,167						$	12.30					$	—					7.1 years
Vested and Expected to vest as of December 31, 2022						1,890,167						$	12.30					$	—					7.1 years
Exercisable at December 31, 2022						1,460,664						$	12.88					$	—					6.6 years

A summary of the status and changes of stock options and the related average price per share follows:

						Number of Options						Weighted- Average Grant Date Fair Value
Outstanding unvested as of December 31, 2021						115,920						$	6.64
Granted						447,562						5.33
Vested						(49,936)						6.40
Forfeited						(84,043)						6.06
Outstanding unvested as of December 31, 2022						429,503						$	5.42

Schedule of Nonvested Restricted Stock Units Activity

A summary of the status and changes of shares subject to RSU awards for employees and the related average price per share follows:

						Number of Shares						Weighted- Average Grant Date Fair Value
Outstanding unvested as of December 31, 2021						2,696						$	13.96
Granted						554,004						9.76
Cancelled						(78,035)						10.08
Vested						(1,348)						13.96
Outstanding unvested as of December 31, 2022						477,317						$	9.72

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

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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