Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities
Net loss	$ (3,109,618)	$ (2,763,931)
Adjustment to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	347,859	285,308
Share-based compensation	205,353	138,498
Changes in operating assets and liabilities:
Other receivables	(33,978)	(18,410)
Inventory	(610,200)	(83,158)
Prepaid expenses and other assets	(73,944)	55,504
Accounts payable and accrued liabilities	339,818	253,509
Net cash used in operating activities	(2,934,710)	(2,132,680)
Investing activities
Purchase of property, plant and equipment	(691,351)	(456,436)
Proceeds from sale of asset held for sale	98,000	0
Proceeds from legal settlement, net	1,014,008	0
Other investing activities	(1,307)	13
Net cash provided by (used in) investing activities	419,350	(456,423)
Financing activities
Proceeds from issuance of debt	0	376,117
Repayment of term debt	(39,391)	(9,619)
Proceeds from the issuance of common stock, net	14,521,704	6,609,655
Proceeds from the exercise of stock options and warrants, net	0	250,424
Net cash provided by financing activities	14,482,313	7,226,577
Effect of exchange rate changes on cash and cash equivalents	(15,951)	2,951
Net change in cash and cash equivalents	11,951,002	4,640,425
Cash and cash equivalents at beginning of period	2,798,744	3,002,557
Cash and cash equivalents at the end of period	14,749,746	7,642,982
Supplemental disclosure of cash flow information and non-cash transactions:
Interest paid in cash	17,045	13,338
Property and equipment included in accounts payable and accrued liabilities	$ 257,884	$ 79,193