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Inventories (Details) (CAD) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Spare tires	5,907	5,195
Job materials	0	1,072
Manufacturing raw materials	0	2,609
Finished goods	0	1,962
Total inventories	5,907	10,838

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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