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Unaudited Condensed Consolidated Statements of Changes in Stockholders’ Equity (Deficit) - USD ($)
$ in Thousands
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Total
Balance at Dec. 31, 2018 $ 8 $ 53,522 $ (52,684) $ 846
Balance (in Shares) at Dec. 31, 2018 79,451,338      
Exercise of stock options   10   10
Exercise of stock options (in Shares) 44,154      
Issuance of stock in asset acquisition   109   109
Issuance of stock in asset acquisition (in Shares) 458,902      
Issuance of warrants   38   38
Stock-based compensation expense   208   208
Stockholder distribution     (10) (10)
Issuance of restricted stock (in Shares) 446,333      
Net income (loss)     (14,901) (14,901)
Balance at Dec. 31, 2019 $ 8 53,887 (67,595) (13,700)
Balance (in Shares) at Dec. 31, 2019 80,400,727      
Exercise of stock options (in Shares) 5,300      
Exercise of warrants   34   34
Exercise of warrants (in Shares) 2,584,637      
Stock-based compensation expense   52   52
Net income (loss)     (6,454) (6,454)
Balance at Mar. 31, 2020 $ 8 53,973 (74,049) (20,068)
Balance (in Shares) at Mar. 31, 2020 82,990,664      
Balance at Dec. 31, 2019 $ 8 53,887 (67,595) (13,700)
Balance (in Shares) at Dec. 31, 2019 80,400,727      
Exercise of stock options   114   114
Exercise of stock options (in Shares) 488,625      
Exercise of warrants   884   884
Exercise of warrants (in Shares) 4,995,584      
Stock-based compensation expense   978   978
Conversion of convertible debt   17,446   17,446
Conversion of convertible debt (in Shares) 1,715,918      
Issuance of restricted stock (in Shares) 25,309      
PIC shares recapitalized, net of issuance costs and the fair value of warrant liabilities (Restated) $ 3 98,886   98,889
PIC shares recapitalized, net of issuance costs and the fair value of warrant liabilities (Restated) (in Shares) 28,739,091      
Shares issued in offering, net of issuance costs $ 2 144,889   144,891
Shares issued in offering, net of issuance costs (in Shares) 15,000,000      
Net income (loss)     (60,606) (60,606)
Balance at Dec. 31, 2020 $ 13 317,084 (128,201) 188,896
Balance (in Shares) at Dec. 31, 2020 131,365,254      
Balance at Mar. 31, 2020 $ 8 53,973 (74,049) (20,068)
Balance (in Shares) at Mar. 31, 2020 82,990,664      
Stock-based compensation expense   225   225
Net income (loss)     (13,499) (13,499)
Balance at Jun. 30, 2020 $ 8 54,198 (87,548) (33,342)
Balance (in Shares) at Jun. 30, 2020 82,990,664      
Balance at Dec. 31, 2020 $ 13 317,084 (128,201) 188,896
Balance (in Shares) at Dec. 31, 2020 131,365,254      
Exercise of stock options   16   16
Exercise of stock options (in Shares) 65,875      
Exercise of warrants (in Shares) 233,555      
Exercise of Public warrants $ 1 85,554   85,555
Exercise of Public warrants (in Shares) 7,441,020      
Settlement of warrant liability upon exercise of warrants   47,162   47,162
Settlement of warrant liability upon call of warrants   591   591
Proceeds from PIC shares recapitalization   75   75
Stock-based compensation expense   442   442
Net income (loss)     61,914 61,914
Balance at Mar. 31, 2021 $ 14 450,924 (66,287) 384,651
Balance (in Shares) at Mar. 31, 2021 139,105,704      
Exercise of stock options   7   7
Exercise of stock options (in Shares) 29,870      
Issuance of shares in business combination with World Energy   1,439   1,439
Issuance of shares in business combination with World Energy (in Shares) 231,002      
Stock-based compensation expense   754   754
Net income (loss)     (10,469) (10,469)
Balance at Jun. 30, 2021 $ 14 $ 453,124 $ (76,756) $ 376,382
Balance (in Shares) at Jun. 30, 2021 139,366,576