Investments And Restricted Investments (Amortized Cost And Fair Value Of Available-For-Sale Securities) (Details) (USD $) In Thousands, unless otherwise specified	May 04, 2013	Feb. 02, 2013	Apr. 28, 2012
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 9,737	$ 10,099	$ 10,736
Unrealized gains	913	915	1,015
Unrealized losses	(10)	(14)	(51)
Fair value	10,640	11,000	11,700
Short-term	2,196	2,362	721
Long-term	8,444	8,638	10,979
Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	4,884	4,991	5,615
Unrealized gains	466	484	513
Unrealized losses	(10)	(14)	(51)
Fair value	5,340	5,461	6,077
Short-term	1,038	1,087	463
Long-term	4,302	4,374	5,614
Investments [Member] \| Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	4,713	4,715	5,105
Unrealized gains	455	468	484
Unrealized losses	(10)	(14)	(51)
Fair value	5,158	5,169	5,538
Short-term	1,002	1,013	397
Long-term	4,156	4,156	5,141
Investments [Member] \| Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	171	276	510
Unrealized gains	11	16	29
Unrealized losses	0	0	0
Fair value	182	292	539
Short-term	36	74	66
Long-term	146	218	473
Restricted Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	4,853	5,108	5,121
Unrealized gains	447	431	502
Unrealized losses	0	0	0
Fair value	5,300	5,539	5,623
Short-term	1,158	1,275	258
Long-term	4,142	4,264	5,365
Restricted Investments [Member] \| Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	1,110	1,360	1,358
Unrealized gains	20	34	81
Unrealized losses	0	0	0
Fair value	1,130	1,394	1,439
Short-term	1,012	1,275	258
Long-term	118	119	1,181
Restricted Investments [Member] \| U.S. Government And Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	3,743	3,748	3,763
Unrealized gains	427	397	421
Unrealized losses	0	0	0
Fair value	4,170	4,145	4,184
Short-term	146	0	0
Long-term	$ 4,024	$ 4,145	$ 4,184

Amount of available-for-sale debt securities at cost, net of adjustments, which include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

+ References+ Details

Amount of debt securities categorized neither as held-to-maturity nor trading.

+ References

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+ Details

- Definition

Total of debt securities categorized neither as held-to-maturity nor trading which are intended be sold or mature within one year from the balance sheet date or the normal operating cycle, whichever is longer.

+ References

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

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+ Details

- Definition

Total of debt securities categorized neither as held-to-maturity nor trading which are intended be sold or mature more than one year from the balance sheet date or operating cycle, if longer.

+ References

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

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+ Details

- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

+ References+ Details