Consolidated Balance Sheets - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 14,749,746	$ 2,798,744
Other receivables	82,873	55,198
Inventory	1,833,957	1,232,049
Prepaid expenses and other current assets	364,700	391,162
Total current assets	17,031,276	4,477,153
Property, plant and equipment, net	23,708,229	25,065,836
Right of use assets, net	385,519	399,477
Definite-lived intangible assets, net	154,162	157,588
Indefinite-lived intangible assets	101,661	101,661
Other assets	33,331	32,024
Total assets	41,414,178	30,233,739
Current liabilities:
Accounts payable and accrued liabilities	1,834,685	1,462,809
Other current liabilities	62,939	62,286
Current debt	150,730	163,155
Total current liabilities	2,048,354	1,688,250
Long-term lease obligations	336,997	352,808
Long-term debt	4,032,744	4,432,052
Total liabilities	6,418,095	6,473,110
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.001 par value, 50,000,000 shares authorized; 32,085,684 (2018: 21,635,365) shares outstanding	32,086	21,635
Additional paid-in capital	170,957,969	156,241,363
Accumulated other comprehensive loss	(742,145)	(360,160)
Accumulated deficit	(135,251,827)	(132,142,209)
Total stockholders’ equity	34,996,083	23,760,629
Total liabilities and stockholders’ equity	$ 41,414,178	$ 30,233,739