Summary of Activity Related to Gross Unrecognized Tax Benefits (Detail) - USD ($)	12 Months Ended
Jan. 31, 2016	Feb. 01, 2015	Feb. 02, 2014
Schedule of Unrecognized Tax Benefits [Line Items]
Balance at beginning of year	$ 14,359,000	$ 10,765,000	$ 8,990,000
Increases related to current year's tax positions	2,765,000	3,093,000	3,351,000
Increases related to prior years' tax positions	101,000	2,007,000	328,000
Decreases related to prior years' tax positions	(341,000)	(138,000)	(42,000)
Settlements	(2,912,000)	(1,144,000)	(170,000)
Lapses in statute of limitations	(682,000)	(224,000)	(1,692,000)
Balance at end of year	$ 13,290,000	$ 14,359,000	$ 10,765,000

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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