Stock Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of share-based payment award, stock options, valuation assumptions

	May 4, 2021		June 11, 2021		December 3, 2021
Expected volatility	53.76	%	57.77	%	64.26	%
Dividend yield	—	%	—	%	—	%
Expected term (in years)	6		5		6
Risk-free rate	1.05	%	0.96	%	1.21	%

Schedule of share-based compensation, stock options and stock appreciation rights award activity

A summary of option activity under both plans is presented below:

	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value(1)
	(dollars in thousands, except share data and exercise price)
Outstanding at December 31, 2020	726,500	$	4.53	7.2	$	1,484
Granted	262,475	$	3.83	5.0	$	—
Exercised	—	$	—	0.0	$	—
Forfeited or expired	142,244	$	9.73	0.0	$	—
Outstanding at December 31, 2021	846,731	$	4.00	7.6	$	—
Vested and exercisable at December 31, 2021	384,858	$	4.85	6.6	$	—

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(1)The aggregate intrinsic value above is obtained by subtracting the exercise price from the estimated fair value of the underlying shares and multiplying this result by the related number of options outstanding and exercisable as of the period end date. There is no intrinsic value if the exercise price exceeds the fair value of the underlying shares. The estimated fair value of the shares is based on the closing stock price of $1.96 as of December 31, 2021 and $5.50 as of December 31, 2020.