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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Additional Paid-In Capital
Retained Earnings (Accumulated Deficit)
Non-controlling Interest
Beginning balance (in shares) at Dec. 31, 2019   34,170      
Beginning balance at Dec. 31, 2019 $ 71,259 $ 34 $ 56,708 $ 14,517 $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Contributions from non-controlling interest 148       148
Shares issued on stock options exercises for cash (in shares)   20      
Shares issued on stock options exercises for cash 97   97    
Stock based compensation 3,209   3,209    
Shares issued on net settlement of stock options (in shares)   33      
Net loss (10,375)     (10,369) (6)
Ending balance (in shares) at Sep. 30, 2020   34,223      
Ending balance at Sep. 30, 2020 64,338 $ 34 60,014 4,148 142
Beginning balance (in shares) at Jun. 30, 2020   34,202      
Beginning balance at Jun. 30, 2020 66,836 $ 34 58,926 7,876 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Contributions from non-controlling interest 148       148
Shares issued on stock options exercises for cash (in shares)   10      
Shares issued on stock options exercises for cash 25   25    
Stock based compensation 1,063   1,063    
Shares issued on net settlement of stock options (in shares)   11      
Net loss (3,734)     (3,728) (6)
Ending balance (in shares) at Sep. 30, 2020   34,223      
Ending balance at Sep. 30, 2020 64,338 $ 34 60,014 4,148 142
Beginning balance (in shares) at Dec. 31, 2020   34,289      
Beginning balance at Dec. 31, 2020 63,859 $ 34 61,066 2,621 138
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Contributions from non-controlling interest 195       195
Shares issued on stock options exercises for cash (in shares)   11      
Shares issued on stock options exercises for cash 49   49    
Stock based compensation 3,747   3,747    
Shares issued on net settlement of stock options (in shares)   40      
Net loss (13,190)     (13,169) (21)
Ending balance (in shares) at Sep. 30, 2021   34,340      
Ending balance at Sep. 30, 2021 54,660 $ 34 64,862 (10,548) 312
Beginning balance (in shares) at Jun. 30, 2021   34,323      
Beginning balance at Jun. 30, 2021 57,682 $ 34 63,650 (6,326) 324
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Shares issued on stock options exercises for cash (in shares)   3      
Shares issued on stock options exercises for cash 28   28    
Stock based compensation 1,184   1,184    
Shares issued on net settlement of stock options (in shares)   14      
Net loss (4,234)     (4,222) (12)
Ending balance (in shares) at Sep. 30, 2021   34,340      
Ending balance at Sep. 30, 2021 $ 54,660 $ 34 $ 64,862 $ (10,548) $ 312