Significant accounting policies Long-lived assets (Tables)

12 Months Ended

Jan. 31, 2015

Long lived assets [Abstract]

Property, Plant and Equipment [Table Text Block]

	2014	2013
Land, buildings and improvements	$36,493	$36,535
Machinery and equipment	54,277	50,793
Furniture, office equipment and computer systems	10,426	9,723
Transportation equipment	192	206
Subtotal	101,388	97,257
Less accumulated depreciation and amortization	59,368	54,716
Property, plant and equipment, net	$42,020	$42,541