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CONSOLIDATED BALANCE SHEETS - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 11,782,172 $ 42,351,145
Restricted cash 0 1,146,186
Prepaid expenses and deposits 2,435,079 2,484,634
Other receivables 2,402,004 237
Total current assets 16,619,255 45,982,202
Non-current assets:    
Property, plant and equipment, net 12,323,143 10,096,861
Construction in progress 0 2,225,610
Right-of-use assets, net 5,479,786 9,830,461
Total non-current assets 17,802,929 22,152,932
Total assets 34,422,184 68,135,134
Current liabilities:    
Accounts payable and accrued liabilities 4,704,611 11,134,913
Related party deferred revenue 2,500,000  
Deferred revenue 0 1,146,186
Lease liability 577,198 620,490
Total current liabilities 7,781,809 12,901,589
Non-current liabilities:    
Lease liability, net of current portion 7,039,338 11,247,950
Total non-current liabilities 7,039,338 11,247,950
Total liabilities 14,821,147 24,149,539
Stockholders' equity:    
Preferred stock - $0.001 par value, 5 million shares authorized and 0 shares issued and outstanding at December 31, 2022 and 2021, respectively
Common stock, $0.001 par value, 30 million and 15 million shares authorized, 8.4 million and 8.3 million shares issued and outstanding as of December 31, 2022 and 2021, respectively 8,406 8,308
Additional paid-in capital 447,641,680 442,095,642
Accumulated deficit (428,049,049) (398,118,355)
Total stockholders' equity 19,601,037 43,985,595
Total liabilities and stockholders' equity $ 34,422,184 $ 68,135,134