Property, plant and equipment

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]



December 31, 2019	Cost		Accumulated Depreciation		Net Book Value
Owned assets
Heavy equipment	$	299,298	$	70,031	$	229,267
Major component parts in use	252,328		92,161		160,167
Other equipment	40,344		25,328		15,016
Licensed motor vehicles	14,270		9,463		4,807
Office and computer equipment	5,154		3,511		1,643
Land	13,829		—		13,829
Buildings	26,281		2,421		23,860
	651,504		202,915		448,589

Assets under finance lease
Heavy equipment	132,270		43,466		88,804
Major component parts in use	71,706		27,918		43,788
Other equipment	2,126		264		1,862
Licensed motor vehicles	5,617		1,551		4,066
Office and computer equipment	691		71		620
	212,410		73,270		139,140

Total property, plant and equipment	$	863,914	$	276,185	$	587,729



December 31, 2018	Cost		Accumulated Depreciation		Net Book Value
Owned assets
Heavy equipment	$	346,071	$	78,296	$	267,775
Major component parts in use	143,032		66,019		77,013
Other equipment	33,824		21,711		12,113
Licensed motor vehicles	19,745		15,618		4,127
Office and computer equipment	8,972		6,450		2,522
Land	11,095		—		11,095
Buildings	31,425		6,265		25,160
Leasehold improvements	2,875		1,053		1,822
	597,039		195,412		401,627

Assets under finance lease
Heavy equipment	110,759		35,376		75,383
Major component parts in use	64,602		16,964		47,638
Other equipment	772		17		755
Licensed motor vehicles	3,822		1,087		2,735
Office and computer equipment	23		23		—
Buildings	25		6		19
	180,003		53,473		126,530

Total property, plant and equipment	$	777,042	$	248,885	$	528,157

During the year ended December 31, 2019, additions to property, plant and equipment by means of finance leases were $28,107 (2018 - $21,904).

In 2018, the Company completed sale-leaseback transactions of $29,295. Deferred gains on sale-leaseback transactions are included in other long-term obligations and are amortized over the expected life of the equipment (note 14(a)).