Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Significant Accounting Policies [Abstract]

Depreciation of Assets Based on Usage

Asset	Basis	Rate / term
Land improvements	Declining balance	10%
Buildings	Straight-line	15 - 30 years
Yard equipment	Declining balance	20 - 30%
Automotive equipment	Declining balance	30%
Computer software and equipment	Straight-line	3 - 5 years
Office equipment	Declining balance	20%
Leasehold improvements	Straight-line	Lesser of lease term or economic life

Amortization of Intangible Assets

Asset	Basis	Rate / term
Customer relationships	Straight-line	10 - 20 years
Software assets	Straight-line	3 - 5 years