Business Segment Information (Details) - CAD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Business Segment Information
Segment assets	$ 503,349	$ 506,913
Segment liabilities	141,335	112,507
Operating segments
Business Segment Information
Segment assets	503,349	506,913
Segment liabilities	141,335	112,507
Operating segments \| Iron Ore Royalty
Business Segment Information
Segment assets	222,385	224,043
Segment liabilities	53,489	55,369
Operating segments \| Industrial Equity
Business Segment Information
Segment assets	162,772	195,642
Segment liabilities	37,482	48,784
Operating segments \| Merkanti Holding plc
Business Segment Information
Segment assets	117,790	86,369
Segment liabilities	45,808	7,168
Operating segments \| All other segments
Business Segment Information
Segment assets	402	859
Segment liabilities	$ 4,556	$ 1,186

Expiry date 2020-01-01: The amount of resources: (a) controlled by the entity as a result of past events; and (b) from which future economic benefits are expected to flow to the entity. Effective 2020-01-01: The amount of a present economic resource controlled by the entity as a result of past events. Economic resource is a right that has the potential to produce economic benefits.

Expiry date 2020-01-01: The amount of present obligations of the entity arising from past events, the settlement of which is expected to result in an outflow from the entity of resources embodying economic benefits. Effective 2020-01-01: The amount of a present obligation of the entity to transfer an economic resource as a result of past events. Economic resource is a right that has the potential to produce economic benefits.

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