|
Investments (Amortized Cost And Fair Value Of Available-For-Sale Securities) (Details) (USD $)
In Thousands, unless otherwise specified |
Apr. 28, 2012
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Jan. 28, 2012
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Apr. 30, 2011
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|---|---|---|---|
| Schedule of Available-for-sale Securities [Line Items] | |||
| Amortized cost | $ 10,736 | $ 10,934 | $ 14,720 |
| Unrealized gains | 1,015 | 1,055 | 779 |
| Unrealized losses | (51) | (78) | (33) |
| Fair value | 11,700 | 11,911 | 15,466 |
| Short-term | 721 | 658 | 3,275 |
| Long-term | 10,979 | 11,253 | 12,191 |
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Corporate Securities [Member]
|
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| Schedule of Available-for-sale Securities [Line Items] | |||
| Fair value | 7,745 | ||
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U.S. Government And Agency Securities [Member]
|
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| Schedule of Available-for-sale Securities [Line Items] | |||
| Fair value | 6,669 | ||
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Mortgage-Backed Securities [Member]
|
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| Schedule of Available-for-sale Securities [Line Items] | |||
| Fair value | 1,052 | ||
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Investments [Member]
|
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| Schedule of Available-for-sale Securities [Line Items] | |||
| Amortized cost | 5,615 | 5,808 | |
| Unrealized gains | 513 | 530 | |
| Unrealized losses | (51) | (78) | |
| Fair value | 6,077 | 6,260 | |
| Short-term | 463 | 658 | |
| Long-term | 5,614 | 5,602 | |
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Investments [Member] | Corporate Securities [Member]
|
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| Schedule of Available-for-sale Securities [Line Items] | |||
| Amortized cost | 5,105 | 5,080 | 7,170 |
| Unrealized gains | 484 | 501 | 608 |
| Unrealized losses | (51) | (78) | (33) |
| Fair value | 5,538 | 5,503 | 7,745 |
| Short-term | 397 | 401 | |
| Long-term | 5,141 | 5,102 | 7,745 |
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Investments [Member] | U.S. Government And Agency Securities [Member]
|
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| Schedule of Available-for-sale Securities [Line Items] | |||
| Amortized cost | 6,589 | ||
| Unrealized gains | 80 | ||
| Fair value | 6,669 | ||
| Short-term | 2,809 | ||
| Long-term | 3,860 | ||
|
Investments [Member] | Mortgage-Backed Securities [Member]
|
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| Schedule of Available-for-sale Securities [Line Items] | |||
| Amortized cost | 510 | 728 | 961 |
| Unrealized gains | 29 | 29 | 91 |
| Unrealized losses | |||
| Fair value | 539 | 757 | 1,052 |
| Short-term | 66 | 257 | 466 |
| Long-term | 473 | 500 | 586 |
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Restricted Investments [Member]
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| Schedule of Available-for-sale Securities [Line Items] | |||
| Amortized cost | 5,121 | 5,126 | |
| Unrealized gains | 502 | 525 | |
| Unrealized losses | |||
| Fair value | 5,623 | 5,651 | |
| Short-term | 258 | ||
| Long-term | 5,365 | 5,651 | |
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Restricted Investments [Member] | Corporate Securities [Member]
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| Schedule of Available-for-sale Securities [Line Items] | |||
| Amortized cost | 1,358 | 1,357 | |
| Unrealized gains | 81 | 94 | |
| Unrealized losses | |||
| Fair value | 1,439 | 1,451 | |
| Short-term | 258 | ||
| Long-term | 1,181 | 1,451 | |
|
Restricted Investments [Member] | U.S. Government And Agency Securities [Member]
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| Schedule of Available-for-sale Securities [Line Items] | |||
| Amortized cost | 3,763 | 3,769 | |
| Unrealized gains | 421 | 431 | |
| Unrealized losses | |||
| Fair value | 4,184 | 4,200 | |
| Short-term | |||
| Long-term | $ 4,184 | $ 4,200 |