Significant accounting policies Long-lived assets (Tables)

12 Months Ended

Jan. 31, 2018

Long lived assets [Abstract]

Property, Plant and Equipment [Table Text Block]

(In thousands)	2017	2016
Land, buildings and improvements	$22,796	$22,330
Machinery and equipment	47,009	44,538
Furniture, office equipment and computer systems	4,504	4,704
Transportation equipment	3,490	3,690
Subtotal	77,799	75,262
Less accumulated depreciation	43,290	38,987
Property, plant and equipment, net of accumulated depreciation	$34,509	$36,275