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Activity of Auction Rate Securities, Fair Value Measured using Level Three Inputs (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |||
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May 04, 2013
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| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||||
| Redemptions | $ 50 | [1] | ||
| Unrealized gains (losses) included in other comprehensive (loss) income | (6) | |||
| Recovery in fair value occurred | $ 10 | |||
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