Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating activities
Net loss	$ (6,633,302)	$ (6,790,663)
Adjustment to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	701,593	576,596
Share-based compensation	309,244	456,716
Gain on disposal of equipment	0	(8,548)
Other non-cash charge	40,600	0
Changes in operating assets and liabilities:
Other receivables	(4,704)	10,454
Inventory	(1,261,930)	(134,137)
Prepaid expenses and other assets	(404,931)	(238,820)
Accounts payable and accrued liabilities	280,142	922,237
Net cash used in operating activities	(6,973,288)	(5,206,165)
Investing activities
Purchase of property, plant and equipment	(1,588,497)	(925,617)
Proceeds from sale of equipment	98,000	8,548
Proceeds from legal settlement, net	1,014,008	0
Other investing activities	(12,460)	0
Net cash used in investing activities	(488,949)	(917,069)
Financing activities
Proceeds from issuance of debt	221,130	900,767
Repayment of term debt	(41,262)	(27,837)
Proceeds from the issuance of common stock, net	14,521,704	12,395,348
Proceeds from the exercise of stock options and warrants, net	0	250,424
Net cash provided by financing activities	14,701,572	13,518,702
Effect of exchange rate changes on cash and cash equivalents	(16,685)	15,636
Net change in cash and cash equivalents	7,222,650	7,411,104
Cash and cash equivalents at beginning of period	2,798,744	3,002,557
Cash and cash equivalents at the end of period	10,021,394	10,413,661
Supplemental disclosure of cash flow information and non-cash transactions:
Interest paid in cash	17,058	27,550
Property and equipment included in accounts payable and accrued liabilities	$ 238,235	$ 422,808