Fair Value Measurments - Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $) | 2-May-15 | Jan. 31, 2015 | 3-May-14 |
In Thousands, unless otherwise specified |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Assets, Fair Value Disclosure, Recurring | $13,822 | $12,443 | $11,599 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Assets, Fair Value Disclosure, Recurring | 13,822 | 12,443 | 11,599 |
Significant Other Observable Inputs (Level 2) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Assets, Fair Value Disclosure, Recurring | 0 | 0 | 0 |
Significant Unobservable Inputs (Level 3) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Assets, Fair Value Disclosure, Recurring | 0 | 0 | 0 |
Equity Securities | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | 2,753 | 3,098 | 3,188 |
Equity Securities | Quoted Prices in Active Markets for Identical Assets (Level 1) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | 2,753 | 3,098 | 3,188 |
Equity Securities | Significant Other Observable Inputs (Level 2) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | 0 | 0 | 0 |
Equity Securities | Significant Unobservable Inputs (Level 3) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | 0 | 0 | 0 |
Fixed Income Funds | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | 896 | 911 | 806 |
Fixed Income Funds | Quoted Prices in Active Markets for Identical Assets (Level 1) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | 896 | 911 | 806 |
Fixed Income Funds | Significant Other Observable Inputs (Level 2) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | 0 | 0 | 0 |
Fixed Income Funds | Significant Unobservable Inputs (Level 3) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | 0 | 0 | 0 |
Money Market Funds [Member] | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | | 1,410 | |
Money Market Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | | 1,410 | |
Money Market Funds [Member] | Significant Other Observable Inputs (Level 2) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | | 0 | |
Money Market Funds [Member] | Significant Unobservable Inputs (Level 3) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | | 0 | |
Equity Funds | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | 10,173 | 7,024 | 7,605 |
Equity Funds | Quoted Prices in Active Markets for Identical Assets (Level 1) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | 10,173 | 7,024 | 7,605 |
Equity Funds | Significant Other Observable Inputs (Level 2) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | 0 | 0 | 0 |
Equity Funds | Significant Unobservable Inputs (Level 3) | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | | | |
Investments, Fair Value Disclosure | $0 | $0 | $0 |