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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity
The following table presents certain information related to the activity of our non-vested stock option grants:
Number of Stock OptionsWeighted Average Exercise PricesWeighted Average Remaining Contractual Term (years)Aggregate Intrinsic Value
Outstanding as of December 31, 2022
1,250,685 $3.71 7.66 $— 
Granted— — — — 
  Less: Forfeited— — — — 
  Less: Expired161,925 3.05 — — 
Less: Exercised
— — — — 
Outstanding as of March 31, 2023
1,088,760 $3.81 8.55 $451 
Vested as of March 31, 2023(1)
532,797 $7.26 7.79 $112 
Exercisable as of March 31, 2023
270,861 $6.57 7.89 $112 
(1) The vested shares are calculated based on all vested shares at March 31, 2023, inclusive of those that have since expired. The weighted average exercise prices, weighted-average remaining contractual term and aggregate intrinsic value is calculated based on only vested shares that are outstanding and exercisable at March 31, 2023.
Schedule of Nonvested Share Activity
The following table presents certain information related to the activity of our non-vested common stock grants:
Number of Restricted SharesWeighted Average Grant Date Fair Value
Outstanding as of December 31, 2022
714,239 $2.73 
Granted — — 
Less: Forfeited856 3.59 
Less: Vested 44,457 4.40 
Outstanding as of March 31, 2023
668,926 $2.62 
Share-based Payment Arrangement, Activity
The following table presents our total stock-based compensation expense:
Three Months Ended March 31,
20232022
Employee stock-based compensation expense
     Pre-tax $309 $390 
     Post-tax (1)
244 308 
Director stock-based compensation expense
     Pre-tax 26 62 
     Post-tax (1)
21 49 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions The following weighted-average assumptions were used to value the stock options granted:
20232022
Expected annual dividend yield—  %—  %
Expected volatility—  %49.66  %
Risk-free interest rate—  %2.92  %
Expected termN/A6 years