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Stockholders' Equity (Tables)
 3 Months Ended
Mar. 31, 2022
Equity [Abstract]  
Schedule of Stock Option and Warrants Activity
The following table summarizes the activity for stock options and warrants for the three months ended March 31, 2022:
Stock OptionsWarrants
SharesWeighted Average Exercise PriceWeighted Average Remaining Contractual Term (Years)Aggregate Intrinsic Value (In Thousands)SharesWeighted Average Exercise PriceWeighted Average Remaining Contractual Term (Years)Aggregate Intrinsic Value (In Thousands)
Outstanding at December 31, 20212,131,849 $5.64 7.97$— 21,356,600 $2.84 4.37$— 
Changes during the period:
Granted540,600 0.91 — — 
Exercised— — — — 
Forfeited(9,565)1.90 — — 
Expired(23,275)26.00 — — 
Outstanding at March 31, 20222,639,609 $4.51 7.83$— 21,356,600 $2.84 4.13$— 
Vested at March 31, 2022
 or expected to vest in the future		2,594,630 $4.57 7.80$— 21,356,600 $2.84 4.13$— 
Vested at March 31, 20221,408,083 $7.36 6.41$— 21,356,600 $2.84 4.13$— 
Schedule of Restricted Stock Activity
During the three months ended March 31, 2022 and 2021, the Company issued restricted stock for services as follows ($ in thousands):
Three Months Ended March 31,
  20222021
Number of restricted stock issued1,061,175 300,450 
Value of restricted stock issued$973 $478 
Schedule of Restricted Stock Units Activity
During the three months ended March 31, 2022 and 2021, the Company issued restricted stock units for services as follows ($ in thousands, except share data):
Three Months Ended March 31,
20222021
Number of restricted stock units issued1,379,860 458,245 
Value of restricted stock units issued $1,265 $729