ROPERTY, PLANT AND EQUIPMENT:



	Land				Buildings and improvements				Manufacturing equipment				Other equipment				Assets not yet utilized in operations				Total

2018

Cost
Balance, December 31, 2017		$	70,003			$	512,398			$	1,039,974			$	175,640			$	77,389			$	1,875,404
Additions		1,051				9,650				49,560				3,065				47,406				110,732
Transfers		—				33,932				31,735				1,498				(67,165		)		—
Disposals		(97		)		(5,095		)		(35,924		)		(21,002		)		—				(62,118		)
Balance, December 30, 2018		$	70,957			$	550,885			$	1,085,345			$	159,201			$	57,630			$	1,924,018

Accumulated depreciation
Balance, December 31, 2017		$	—			$	157,040			$	571,847			$	110,699			$	—			$	839,586
Depreciation		—				24,781				91,081				9,935				—				125,797
Disposals		—				—				(22,510		)		(9,330		)		—				(31,840		)
Balance, December 30, 2018		$	—			$	181,821			$	640,418			$	111,304			$	—			$	933,543
Carrying amount, December 30, 2018		$	70,957			$	369,064			$	444,927			$	47,897			$	57,630			$	990,475



	Land			Buildings and improvements				Manufacturing equipment				Other equipment				Assets not yet utilized in operations				Total

2017

Cost
Balance, January 1, 2017		$	69,373		$	504,186			$	997,993			$	167,651			$	50,607			$	1,789,810
Additions		630			7,515				17,565				10,852				55,640				92,202
Additions through business acquisitions		—			29				4,153				356				—				4,538
Transfers		—			2,601				25,062				1,195				(28,858		)		—
Disposals		—			(1,933		)		(4,799		)		(4,414		)		—				(11,146		)
Balance, December 31, 2017		$	70,003		$	512,398			$	1,039,974			$	175,640			$	77,389			$	1,875,404

Accumulated depreciation
Balance, January 1, 2017		$	—		$	132,976			$	483,742			$	96,209			$	—			$	712,927
Depreciation		—			24,719				92,904				18,610				—				136,233
Disposals		—			(655		)		(4,799		)		(4,120		)		—				(9,574		)
Balance, December 31, 2017		$	—		$	157,040			$	571,847			$	110,699			$	—			$	839,586
Carrying amount, December 31, 2017		$	70,003		$	355,358			$	468,127			$	64,941			$	77,389			$	1,035,818

Assets not yet utilized in operations include expenditures incurred to date for plant expansions which are still in process and equipment not yet placed into service as at the end of the reporting period.

As at December 30, 2018, there were contractual purchase obligations outstanding of approximately $24.8 million for the acquisition of property, plant and equipment compared to $46.2 million as of December 31, 2017.