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Cash Flow Information Changes in Liabilities from Financing Activities (Details) CAD in Thousands	12 Months Ended
	Dec. 31, 2017 CAD
Disclosure of reconciliation of liabilities arising from financing activities [line items]
December 31, 2016	CAD 4,415
Cash flows	(631)
New leases	14
Dividends declared	64
Foreign exchange impact	(115)
Other	(6)
Balance Dec. 31, 2017	3,741
Long-term debt and finance lease obligations
Disclosure of reconciliation of liabilities arising from financing activities [line items]
December 31, 2016	4,361
Cash flows	(545)
New leases	14
Dividends declared	0
Foreign exchange impact	(115)
Other	(8)
Balance Dec. 31, 2017	3,707
Dividends payable (common and preferred)
Disclosure of reconciliation of liabilities arising from financing activities [line items]
December 31, 2016	54
Cash flows	(86)
New leases	0
Dividends declared	64
Foreign exchange impact	0
Other	2
Balance Dec. 31, 2017	CAD 34

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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The increase (decrease) in liabilities arising from financing activities resulting from the effect of changes in foreign exchange rates. [Refer: Liabilities arising from financing activities]

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The increase (decrease) in liabilities arising from financing activities resulting from financing cash flows. [Refer: Cash flows from (used in) financing activities; Liabilities arising from financing activities]

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The increase (decrease) in liabilities arising from financing activities resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Liabilities arising from financing activities]

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The amount of liabilities for which cash flows were, or future cash flows will be, classified in the statement of cash flows as cash flows from financing activities. [Refer: Cash flows from (used in) financing activities; Liabilities]

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