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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2022
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, 20211,147,215 $4.80 9.49 $792,000 
Granted635,643 1.70 — — 
  Less: Forfeited— — — — 
  Less: Expired— — — — 
Less: Exercised
— — — — 
Outstanding as of June 30, 2022
1,782,858 $3.69 9.32 $— 
Vested as of June 30, 2022(1)
193,724 $11.90 7.61 $— 
Exercisable as of June 30, 2022
141,090 $11.90 7.61 $— 
(1) The vested shares are calculated based on all vested shares at June 30, 2022, inclusive of those that have since expired. The weighted average exercise prices and weighted-average remaining contractual term is calculated based on only vested shares that are outstanding and exercisable at June 30, 2022.
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, 2021336,596 $6.99 
Granted 907,907 1.97 
Less: Forfeited57,786 7.56 
Less: Vested 108,722 7.08 
Outstanding as of June 30, 2022
1,077,995 $2.72 
Share-based Payment Arrangement, Activity
The following table presents our total stock-based compensation expense:
Three Months Ended June 30,Six Months Ended June 30,
2022202120222021
Employee stock-based compensation expense
     Pre-tax $141 $62 $531 $225 
     Post-tax (1)
111 49 419 178 
Director stock-based compensation expense
     Pre-tax 41 80 103 177 
     Post-tax (1)
32 63 81 140 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions The following weighted-average assumptions were used to value the stock options granted:
20222021
Expected annual dividend yield—  %3.90  %
Expected volatility49.66  %45.79  %
Risk-free interest rate2.92  %1.08  %
Expected term6 years6 years