Summary of Significant Accounting Policies Property, Plant & Equipment (Details)	12 Months Ended
	Jan. 31, 2016
Building [Member]
Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life	39 years
Minimum [Member] | Machinery and Equipment [Member]
Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Minimum [Member] | Office Equipment [Member]
Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] | Furniture and Fixtures [Member]
Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Maximum [Member] | Building Improvements [Member]
Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Maximum [Member] | Leasehold Improvements [Member]
Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life	8 years
Maximum [Member] | Machinery and Equipment [Member]
Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life	15 years
Maximum [Member] | Office Equipment [Member]
Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life	8 years
Maximum [Member] | Furniture and Fixtures [Member]
Useful Lives [Line Items]
Property, Plant and Equipment, Useful Life	10 years