Property, plant and equipment

12 Months Ended

Mar. 31, 2013

Property, Plant and Equipment [Abstract]



March 31, 2013	Cost		Accumulated Deprecation		Net Book Value
Heavy equipment	$	259,711	$	96,046	$	163,665
Major component parts in use	58,763		23,512		35,251
Other equipment	25,193		9,970		15,223
Licensed motor vehicles	28,862		22,996		5,866
Office and computer equipment	13,931		11,488		2,443
Buildings	4,015		2,943		1,072
Leasehold improvements	9,512		5,682		3,830
Assets under capital lease	59,160		12,264		46,896
	$	459,147	$	184,901	$	274,246



March 31, 2012	Cost		Accumulated Deprecation		Net Book Value
Heavy equipment	$	347,699	$	124,982	$	222,717
Major component parts in use	74,444		28,741		45,703
Other equipment	35,736		17,017		18,719
Licensed motor vehicles	27,120		19,775		7,345
Office and computer equipment	13,438		8,977		4,461
Buildings	4,355		3,235		1,120
Land	281		—		281
Leasehold improvements	6,620		2,232		4,388
Assets under capital lease	16,579		8,538		8,041
	$	526,272	$	213,497	$	312,775

Assets under capital lease are comprised predominately of heavy equipment and licensed motor vehicles.

During the year ended March 31, 2013, additions to property, plant and equipment included $42,229 of assets that were acquired by means of capital leases (2012 – $7,215; 2011 – $427). Depreciation of equipment under capital lease of $8,554 (2012 – $1,935; 2011 – $2,535) was included in depreciation expense for continuing operations in the current year.

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

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