Consolidated Statements of Changes in Shareholders' Equity - USD ($)
$ in Thousands
Preferred Stock [Member]
Common Stock [Member]
Retained Earnings [Member]
Noncontrolling Interest [Member]
AOCI Attributable to Parent [Member]
Total
Beginning balance, value at Dec. 31, 2019 $ 387,062 $ (273,422) $ (1,712) $ (681) $ 111,247
Balance, shares at Dec. 31, 2019 149,804        
Shares issued through ATM $ 5,404 5,404
Shares issued through ATM, shares 3,095        
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees’ taxes $ (27) (27)
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees' taxes, shares 47        
Shares issued for services $ 119 119
Shares issued for services, shares 150        
Stock-based compensation $ 2,227 2,227
Financing related fees (209) (209)
Dissolution of BioTime Asia (676) (7) 676 (7)
Hadasit non-cash warrant exercise 44 44
Foreign currency translation gain (loss) (2,986) (2,986)
NET LOSS (20,649) (36) (20,685)
Ending balance, value at Dec. 31, 2020 $ 393,944 (294,078) (1,072) (3,667) 95,127
Balance, shares at Dec. 31, 2020 153,096,000        
Shares issued through ATM $ 29,817 29,817
Shares issued through ATM, shares 11,923        
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees’ taxes $ (54) (54)
Shares issued upon vesting of restricted stock units, net of shares retired to pay employees' taxes, shares 40        
Shares issued for services $ 202 202
Shares issued for services, shares 78        
Stock-based compensation $ 3,519 3,519
Shares issued upon exercise of stock options $ 7,429 7,429
Shares issued upon exercise of stock options, shares 4,320        
Financing related fees $ (330) (330)
Shares issued upon exercise of stock options $ 2 2
Shares issued upon exercise of stock options, shares 20        
Foreign currency translation gain (loss) (1,544) (1,544)
NET LOSS (43,019) (251) (43,270)
Ending balance, value at Dec. 31, 2021 $ 434,529 $ (337,097) $ (1,323) $ (5,211) $ 90,898
Balance, shares at Dec. 31, 2021 169,477,000