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Employee benefits
 12 Months Ended
Dec. 31, 2013
Compensation And Retirement Disclosure [Abstract]  
Employee benefits
11. Employee benefits:

The Company sponsors defined contribution plans in Canada. The Company matches the employee’s contribution to their registered retirement savings plan up to a maximum contribution. The expense related to the plan was $0.5 million for the year ended December 31, 2013 (2012—$0.5 million; 2011—$0.5 million).