Income Taxes - Components of Deferred Income Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Canadian net operating losses	$ 0	$ 39,574
U.S. net operating losses	12,328	5,347
Research and development deductions and credits	1,040	11,062
Intangibles	422	1,189
Lease Liability	2,513	233
Stock Compensation	717	309
Other	162	330
Total deferred tax assets:	17,182	58,044
Deferred income tax liabilities
ROU Assets	2,132	169
Other	157	60
Total deferred tax liabilities	2,289	229
Net deferred income tax assets	14,893	57,815
Less: valuation allowance	(14,893)	(57,815)
Deferred tax assets, net of valuation allowance	$ 0	$ 0