Investments And Restricted Investments (Amortized Cost And Fair Value Of Available-For-Sale Securities) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 19,227	$ 10,099
Unrealized gains	602	915
Unrealized losses	(4)	(14)
Fair value	19,825	11,000
Short-term	12,266	2,362
Long-term	7,559	8,638
Increase Decrease in available for sale securities	(300)	(76)	(226)
Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	15,389	4,991
Unrealized gains	331	484
Unrealized losses	(4)	(14)
Fair value	15,716	5,461
Short-term	12,006	1,087
Long-term	3,710	4,374
Investments [Member] | Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	3,298	4,715
Unrealized gains	325	468
Unrealized losses	(4)	(14)
Fair value	3,619	5,169
Short-term	0	1,013
Long-term	3,619	4,156
Investments [Member] | U.S. Government And Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	12,005
Unrealized gains	1
Unrealized losses	0
Fair value	12,006
Short-term	12,006
Long-term	0
Investments [Member] | Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	86	276
Unrealized gains	5	16
Unrealized losses	0	0
Fair value	91	292
Short-term	0	74
Long-term	91	218
Restricted Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	3,838	5,108
Unrealized gains	271	431
Unrealized losses	0	0
Fair value	4,109	5,539
Short-term	260	1,275
Long-term	3,849	4,264
Restricted Investments [Member] | Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	110	1,360
Unrealized gains	5	34
Unrealized losses	0	0
Fair value	115	1,394
Short-term	115	1,275
Long-term	0	119
Restricted Investments [Member] | U.S. Government And Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	3,728	3,748
Unrealized gains	266	397
Unrealized losses	0	0
Fair value	3,994	4,145
Short-term	145	0
Long-term	$ 3,849	$ 4,145