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Employee benefit plans | 12 Months Ended
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Dec. 31, 2018
Retirement Benefits [Abstract] |
Employee benefit plans | Employee benefit plans The Company and certain subsidiaries contributed $991 (2017 – $877) to employee Registered Retirement Savings Plans ("RRSP"). The Company matches voluntary contributions made by employees to their RRSP to a maximum of 5% of base salary for each employee. Other subsidiaries of the Company contribute $1.00 per hour for all eligible employees.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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