Property plant and equipment (Tables)

12 Months Ended

Dec. 30, 2017

Property, Plant and Equipment, Net, by Type [Abstract]

Property Plant And Equipment [Text Block]

	December 30, 2017
	Cost	Accumulated depreciation	Net book value
	$	$	$
Land	7,124	-	7,124
Buildings	70,383	21,784	48,599
Machinery and equipment	178,760	84,525	94,235
Enterprise software	14,829	6,651	8,178
Office furniture and equipment	12,063	7,834	4,229
Vehicles	3,609	2,350	1,259
	286,768	123,144	163,624
	December 31, 2016
	Cost	Accumulated depreciation	Net book value
	$	$	$
Land	7,165	-	7,165
Buildings	68,014	19,432	48,582
Machinery and equipment	168,120	73,914	94,206
Enterprise software	10,845	4,179	6,666
Office furniture and equipment	10,191	5,930	4,261
Vehicles	3,515	2,156	1,359
	267,850	105,611	162,239