New Accounting Pronouncements Loan costs (Details)	12 Months Ended
Jan. 31, 2016
Deferred Costs [Abstract]
Deferred Finance Costs Disclosures	0.2

Describes the nature and amounts of deferred finance costs. These are costs relating to undertaking a financing with a third party. Such costs could involve evaluating and recording guarantees, collateral, and other security arrangements, negotiating loan terms, preparing and processing loan documents, and closing the transaction. Can also be known as deferred loan costs or deferred debt issue costs. Does not include other deferred costs or deferred (policy) acquisition costs (DAC) of insurance companies.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Loan Origination Costs
-URI http://asc.fasb.org/extlink&oid=6510860

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399

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