Restructuring and Strategic Charges - Reserve Rollforward (Details) $ in Thousands	3 Months Ended
Apr. 30, 2016 USD ($)
Restructuring Reserve [Roll Forward]
Beginning Balance, January 30, 2016	$ 5,337
Charges	3,651
Payments	(2,430)
Ending Balance, April 30, 2016	6,558
Continuing employee-related costs
Restructuring Reserve [Roll Forward]
Beginning Balance, January 30, 2016	2,549
Charges	1,015
Payments	(712)
Ending Balance, April 30, 2016	2,852
Severance charges, net
Restructuring Reserve [Roll Forward]
Beginning Balance, January 30, 2016	1,678
Charges	1,184
Payments	(1,289)
Ending Balance, April 30, 2016	1,573
Lease termination charges
Restructuring Reserve [Roll Forward]
Beginning Balance, January 30, 2016	1,101
Charges	221
Payments	(265)
Ending Balance, April 30, 2016	1,057
Consulting Fees and Other
Restructuring Reserve [Roll Forward]
Beginning Balance, January 30, 2016	9
Charges	1,231
Payments	(164)
Ending Balance, April 30, 2016	$ 1,076

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 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585

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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 FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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- Definition

Amount of increase (decrease) in the accrual for restructuring costs.

+ 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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