Significant accounting policies Long-lived assets (Tables)

12 Months Ended

Jan. 31, 2016

Long lived assets [Abstract]

Property, Plant and Equipment [Table Text Block]

	2015	2014
Land, buildings and improvements	$14,758	$13,704
Machinery and equipment	41,534	38,509
Furniture, office equipment and computer systems	5,632	5,945
Transportation equipment	40	43
Subtotal	61,964	58,201
Less accumulated depreciation and amortization	36,564	34,036
Property, plant and equipment, net	$25,400	$24,165