REVENUE AND GENERAL AND ADMINISTRATIVE EXPENSES - Disclosure of detailed information about revenue and other income (Details) - CAD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Revenue And General And Administrative Expenses [Abstract]
Royalty revenue	$ 1,478	$ 1,439
Option and other property income	4,700	1,978
Interest income	937	1,667
Dividend Income	84	0
Revenue and other income	$ 7,199	$ 5,084

Expiry date 2020-01-01: The income arising in the course of an entity's ordinary activities. Income is increases in economic benefits during the accounting period in the form of inflows or enhancements of assets or decreases of liabilities that result in an increase in equity, other than those relating to contributions from equity participants. Effective 2020-01-01: The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

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