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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 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 Options						Weighted Average Exercise Prices						Weighted Average Remaining Contractual Term (years)						Aggregate Intrinsic Value
Outstanding as of December 31, 2022			1,250,685						$	3.71					7.66						$	—
Granted(1)			—						—						—						—
Less: Forfeited			40,000						3.46						—						—
Less: Expired			161,925						3.05						—						—
Less: Exercised			20,000						3.46						—						—
Outstanding as of June 30, 2023			1,028,760						$	3.83					8.30						$	1,561
Vested as of June 30, 2023(2)			800,759						$	5.25					7.99						$	653
Exercisable as of June 30, 2023			430,568						$	5.25					7.99						$	653

(1) Contingent options have been excluded from the calculations in the table above.

(2) The vested shares are calculated based on all vested shares at June 30, 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 June 30, 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 Shares						Weighted Average Grant Date Fair Value
Outstanding as of December 31, 2022			714,239						$	2.73
Granted (1)			45,000						5.25
Less: Forfeited			130,546						3.16
Less: Vested			179,334						3.20
Outstanding as of June 30, 2023			449,359						$	2.67

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,
						2023						2022						2023						2022
Employee stock-based compensation expense
Pre-tax						$	79					$	141					$	388					$	531
Post-tax (1)						62						111						307						419
Director stock-based compensation expense
Pre-tax						29						41						55						103
Post-tax (1)						23						32						43						81

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following weighted-average assumptions were used to value the stock options granted:

			2023						2022
Expected annual dividend yield			—		%				—		%
Expected volatility			80.84		%				49.66		%
Risk-free interest rate			3.44		%				2.92		%
Expected term			6 years						6 years

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Tabular disclosure of the changes in outstanding nonvested shares.

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Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock options and stock appreciation rights that were outstanding at the beginning and end of the year, exercisable at the end of the year, and the number of stock options and stock appreciation rights that were granted, exercised or converted, forfeited, and expired during the year.

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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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