Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current
Cash	$ 3,945	$ 1,205
Short-term investments	6,004	1,038
Accounts receivable	680	260
Prepaid expenses	105	162
Investment tax credits receivable	436	635
Contract asset	0	354
Security deposits	205	407
Inventories	62	244
Total current assets	11,437	4,305
Leasehold improvements and equipment, net	5,213	5,851
Security deposits	252	252
Operating lease right-of-use-asset	1,003	710
Total assets	17,905	11,118
Current
Accounts payable and accrued liabilities	2,299	1,989
Current portion of long-term debt	0	561
Current portion of operating lease liability	249	141
Current portion of finance lease liability	36	25
Deferred revenue	189	166
Convertible notes	0	1,486
Convertible debentures	4,247	0
Total current liabilities	7,020	4,368
Long-term debt	2,500	171
Convertible notes	3,709	1,505
Convertible debentures	0	5,461
Operating lease liability	642	482
Finance lease liability	84	84
Deferred income tax liability	79	0
Total liabilities	14,034	12,071
Contingencies
Subsequent event
Shareholders' equity
Capital stock, common shares, $0.00001 par value; 450,000,000 shares authorized; 154,571,289 shares issued and outstanding (2020: 111,429,532 common shares)	1	1
Additional paid-in capital	63,104	48,453
Accumulated deficit	(57,863)	(48,551)
Accumulated other comprehensive loss	(1,371)	(856)
Total shareholders' equity (deficit)	3,871	(953)
Total liabilities and shareholders' equity	$ 17,905	$ 11,118