Restructuring and Strategic Charges (Severance and Other Charges) (Details) $ in Thousands	9 Months Ended
Oct. 31, 2015 USD ($)
Restructuring Reserve [Roll Forward]
Beginning Balance, January 31, 2015	$ 8,063
Charges	7,980
Payments	(10,379)
Ending Balance, October 31, 2015	5,664
Severance Charges [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance, January 31, 2015	7,577
Charges	1,808
Payments	(7,488)
Ending Balance, October 31, 2015	1,897
Lease Termination Charges [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance, January 31, 2015	0
Charges	4,903
Payments	(1,707)
Ending Balance, October 31, 2015	3,196
Other [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance, January 31, 2015	486
Charges	1,269
Payments	(1,184)
Ending Balance, October 31, 2015	$ 571

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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- Definition

Net total Increase or Decrease in the accrual for restructuring costs during the reporting period.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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