Minimum Percentage of pension liability under Pension Protection Act.

No definition available.

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- Definition

Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2417-114920

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-Publisher FASB

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-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

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-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-02.24)

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-Section 50

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Pension Plans and Other Retirement Benefits - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2015	Nov. 01, 2014	Oct. 31, 2015	Nov. 01, 2014
Pension Plans and Other Retirement Benefits [Line Items]
Minimum percentage of pension liability			80.00%
Anticipated employer's contribution to fund current benefit and expense payments under the unfunded plan in fiscal 2016			$ 3,300,000
Amortization from other comprehensive income to net income	$ 864,000	$ 864,000	2,600,000	$ 2,600,000
Post Retirement Medical Plan
Pension Plans and Other Retirement Benefits [Line Items]
Estimated cost retirement medical liability, non-current liability	1,100,000		1,100,000
Post Retirement Medical Plan \| Other long-term liabilities
Pension Plans and Other Retirement Benefits [Line Items]
Estimated cost retirement medical liability, non-current liability	$ 1,000,000		$ 1,000,000