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Stock-based Compensation (Tables)
 12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Summary of the components of stock-based compensation expense in the condensed consolidated statements of operations
The following table summarizes the components of stock-based compensation expense in the consolidated statements of operations for the years ended December 31, 2022, 2021 and 2020:
Year Ended  December 31,
(in thousands)202220212020
Cost of sales$65 $32 $95 
Selling, general and administrative expenses4,253 2,896 3,192 
Research and development expenses302 285 311 
Total$4,620 $3,213 $3,598 
Summary of the status of time-based stock options A summary of the status of the Company’s Options for the years ended December 31, 2022 and 2021 were as follows:
(in thousands)
Number of
Share
Underlying
Awards
Weighted-Average
Exercise Price
Weighted-Average
Remaining
Contractual
Term (years)
Outstanding at December 31, 2020800 $6.47 6.67
Granted1,098 1.52 9.48
Exercised— — 0.00
Forfeited or expired(398)4.91 5.98
Outstanding at December 31, 20211,500 3.62 8.34
Exercisable at December 31, 2021360 8.56 5.15
Vested and expected to vest at December 31, 20211,500 3.62 8.34
Outstanding at Outstanding at December 31, 20211,500 3.62 8.34
Granted55 1.69 9.39
Exercised(339)2.01 8.42
Forfeited or expired— — 0.00
Outstanding at December 31, 20221,216 3.98 7.13
Exercisable at December 31, 2022429 7.64 4.63
Vested and expected to vest at December 31, 20221,216 $3.98 7.13
Schedule of fair value assumptions
2022
Weighted average grant date fair value$2.00
Risk-free interest rate0.9 %—3.6%
Expected life (years)5.83
Estimated volatility factor53.6 %—78.1%
Expected dividendsNone
The assumptions used to value the SARs as of December 31, 2022 and 2021 are presented below:
20222021
Fair value of awards$0.02$0.01
Risk-free interest rate0.3%0.3%
Expected life (years)1.31.8
Estimated volatility factor54.5%54.5%
Expected dividendsNoneNone
Summary of the time-based SARs A summary of the Company’s SARs as of December 31, 2022 and 2021 were as follows:
(in thousands)
Number
of
Awards
Weighted-Average
Exercise Price
Weighted-Average
Remaining
Contractual
Term (years)
Outstanding at December 31, 202048 $12.00 4.69
Granted— — 0.00
Exercised— — 0.00
Forfeited or expired— — 0.00
Outstanding at December 31, 202148 12.00 3.69
Exercisable at December 31, 202148 12.00 3.69
Vested and expected to vest at December 31, 202148 12.00 3.69
Outstanding at December 31, 202148 12.00 3.69
Granted— — 0.00
Exercised— — 0.00
Forfeited or expired(7)12.00 2.68
Outstanding at December 31, 202241 12.00 2.70
Exercisable at December 31, 202241 12.00 2.70
Vested and expected to vest at December 31, 202241 $12.00 2.70
Schedule of unvested performance shares A summary of the Company’s RSUs and restricted stock as of December 31, 2022 and 2021 were as follows:
(in thousands)
Number of
Shares
Weighted-Average
Grant Date Fair 
Value
Non-vested Restricted Stock & RSUs at December 31, 20202,454 $2.12 
Granted2,143 2.07 
Vested(525)2.69 
Forfeited or expired(1,045)1.95 
Non-vested Restricted Stock & RSUs at December 31, 20213,027 2.05 
Non-vested Restricted Stock & RSUs at December 31, 20213,027 2.05 
Granted2,429 1.88 
Vested(1,694)1.92 
Forfeited or expired(315)2.62 
Non-vested Restricted Stock and RSUs at December 31, 20223,447 $1.94 
A summary of the Company’s Phantom Stock Awards as of December 31, 2022 and 2021 were as follows:
(in thousands)
Number of
Awards
Weighted-Average
Grant Date Fair 
Value
Non-vested phantom stock awards at December 31, 2020326 $2.26 
Granted 68 2.03 
Vested(87)2.80 
Forfeited or expired(41)2.17 
Non-vested phantom stock awards at December 31, 2021266 $2.04 
Non-vested phantom stock awards at December 31, 2021266 $2.04 
Granted 96 1.86 
Vested(89)2.10 
Forfeited or expired(54)2.53 
Non-vested phantom stock awards at December 31, 2022219 $1.82 
Schedule of nonvested shares A summary of the Company’s time-based restricted stock awarded to the board of directors for the years ended December 31, 2022 and 2021 were as follows:
(thousands)
Number of
Shares
Weighted-Average
Grant Date Fair 
Value
Non-vested time-based restricted stock at December 31, 2020187 $2.48 
Granted 275 1.96 
Vested(157)2.48 
Forfeited or expired(30)2.48 
Non-vested time-based restricted stock at December 31, 2021275 $1.96 
Non-vested time-based restricted stock at December 31, 2021275 $1.96 
Granted 343 1.85 
Vested(275)1.96 
Forfeited or expired— — 
Non-vested time-based restricted stock at December 31, 2022343 $1.85