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Stock-Based Compensation - (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]  
Schedule of total stock-based compensation expense
The Company recognized total stock-based compensation expense during the years ended December 31, 2021 and 2020 as follows (table in thousands):
Year Ended December 31,
20212020
Service based awards:
Restricted stock units$344 $372 
Stock option awards1,354 1,491 
$1,697 $1,863 
Performance based awards:
Restricted stock awards$(390)$— 
Restricted stock units— (1,148)
Stock option awards(364)(240)
(754)(1,388)
Total$943 $475 
Restricted stock awards  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]  
Schedule of restricted stock award A summary of the Company’s restricted stock awards during the years ended December 31, 2021 and 2020 is as follows:
Number of SharesWeighted Average
Grant-Date
Fair Value
Unvested at January 1, 2020146,800 $5.70 
Unvested at December 31, 2020146,800 5.70 
Forfeited(68,500)5.70 
Unvested at December 31, 202178,300 $5.70 
Restricted stock units - Service based awards  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]  
Schedule of restricted stock award
A summary of the Company’s service based restricted stock units during the year ended December 31, 2021 and 2020 is as follows:
Number of SharesWeighted Average
Grant-Date
Fair Value
Unvested at January 1, 2020463,786 $4.26 
Granted208,993 2.00 
Forfeited(159,724)4.26 
Vested(247,561)4.30 
Unvested at December 31, 2020265,494 2.60 
Granted310,050 0.90 
Forfeited(11,799)4.81 
Vested(241,563)2.27 
Unvested at December 31, 2021322,182 $1.17 
Restricted stock units - Performance based awards  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]  
Schedule of restricted stock award
A summary of the Company’s performance based restricted stock units during the year ended December 31, 2020 is as follows:
Number of SharesWeighted Average
Grant-Date
Fair Value
Unvested at January 1, 2020988,958 $4.48 
Forfeited(988,958)4.48 
Unvested at December 31, 2020— $— 
Stock option awards - Service based awards  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]  
Schedule of stock option assumptions
The fair value of the service based stock options granted for the years ended December 31, 2021 and 2020 were based on the following assumptions:
December 31,
20212020
Exercise price
$0.54 - $0.54
$0.92 - $2.90
Expected stock price volatility
75.0% - 77.7%
68.2% - 75.8%
Risk-free interest rate
0.47% - 1.30%
31.00% - 1.70%
Term (years)
5.5 - 6.0
5.5 - 6.0
Schedule of stock options activity
A summary of the Company’s service based stock option activity for the years ended December 31, 2021 and 2020 is as follows:
Shares
Underlying
Options		Weighted
Average
Exercise
Price		Weighted
Average
Remaining
Contractual
Term
Aggregate
Intrinsic
Value
(in $1,000's)
Outstanding at January 1, 20208,210,024 $7.06 5.1$— 
Granted2,288,386 1.94 9.0— 
Expired(4,249,596)(8.07)
Forfeited(530,858)(3.88)— 
Outstanding at December 31, 20205,717,956 $4.55 6.6$— 
Granted1,947,162 0.88 — — 
Expired(1,408,709)(7.00)— 
Forfeited(441,903)(2.22)— 
Outstanding at December 31, 20215,814,506 $2.91 7.5$— 
Exercisable at December 31, 20212,612,079 $4.81 5.7$— 
Stock option awards - Performance based awards  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]  
Schedule of stock options activity
A summary of the performance based stock options granted for the year ended December 31, 2021, is as follows:
Number of SharesWeighted Average
Exercise
Price
Outstanding at January 1, 2020388,125 $4.70 
Granted750,000 2.20 
Forfeited(388,125)(4.70)
Outstanding at December 31, 2020750,000 $2.20 
Cancelled(750,000)2.20 
Outstanding at December 31, 2021— $— 
Exercisable at December 31, 2021— $—