CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 26,956,737	$ 43,903,949
Prepaid expenses and deposits	2,367,145	1,526,442
Interest receivable	135	56,189
Other receivable	1,000,000	0
Total current assets	30,324,017	45,486,580
Non-current assets:
Property, plant and equipment, net	2,629,628	417,528
Construction in progress	4,557,581	0
Right-of-use assets, net	11,059,962	455,174
Total non-current assets	18,247,171	872,702
Total assets	48,571,188	46,359,282
Current liabilities:
Accounts payable and accrued liabilities	5,746,149	1,757,680
Lease liability	278,333	204,132
Warrant liability	0	31,000
Total current liabilities	6,024,482	1,992,812
Non-current liabilities:
Lease liability, net of current portion	11,948,781	280,247
Total non-current liabilities	11,948,781	280,247
Total liabilities	17,973,263	2,273,059
Commitments and contingencies (see Note 10)
Stockholders' equity:
Preferred stock - $0.001 par value, 5 million shares authorized and 0 shares issued and outstanding at September 30, 2020 and December 31, 2019 respectively
Common stock, $0.001 par value, 150 million shares authorized, 48.0 million and 45.7 million shares issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	48,025	45,728
Additional paid-in capital	378,282,157	371,573,909
Accumulated deficit	(347,732,257)	(327,533,414)
Total stockholders' equity	30,597,925	44,086,223
Total liabilities and stockholders' equity	$ 48,571,188	$ 46,359,282