CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data	Total	Class A	Class B	Treasury	Additional Paid-in Capital	Retained Earnings
Beginning Balance at Feb. 28, 2009	$ 424,394	$ 553	$ 40	$ (46,611)	$ 186,655	$ 283,757
Beginning Balance (in shares) at Feb. 28, 2009		50,025,000	4,013,000	5,271,000
Net income	35,672					35,672
Cash dividends declared ($0.21 in 2012, $0.17 in 2011, $0.13 in 2010 per share)	(7,124)					(7,124)
Non-qualified Class A Common Stock options exercised and related tax benefits (in shares)		327,000		(327,000)
Non-qualified Class A Common Stock options exercised and related tax benefits	1,695			1,449	246
Share-based compensation	3,508				3,508
Restricted shares vested, net of repurchase for taxes (in shares)		110,000		(110,000)
Restricted shares vested, net of repurchase for taxes	(432)			455	(887)
Shares issued under employee stock purchase plan (in shares)	53,000	53,000		(53,000)
Shares issued under employee stock purchase plan	373			231	142
Class B Common Stock conversion to Class A Common Stock (in shares)		1,960,000	(1,960,000)
Class B Common Stock conversion to Class A Common Stock		19	(19)
Treasury Stock purchased (in shares)		(1,390,000)		1,390,000
Treasury Stock purchased	(15,936)			(15,936)
Ending Balance at Feb. 27, 2010	442,150	572	21	(60,412)	189,664	312,305
Ending Balance (in shares) at Feb. 27, 2010		51,085,000	2,053,000	6,171,000
Net income	68,834					68,834
Cash dividends declared ($0.21 in 2012, $0.17 in 2011, $0.13 in 2010 per share)	(9,092)					(9,092)
Non-qualified Class A Common Stock options exercised and related tax benefits (in shares)		542,000		(542,000)
Non-qualified Class A Common Stock options exercised and related tax benefits	6,261			2,250	4,011
Share-based compensation	4,209				4,209
Restricted shares vested, net of repurchase for taxes (in shares)		223,000	43,000	(223,000)
Restricted shares vested, net of repurchase for taxes	(308)			783	(1,091)
Shares issued under employee stock purchase plan (in shares)	28,000	28,000		(28,000)
Shares issued under employee stock purchase plan	359			116	243
Class B Common Stock conversion to Class A Common Stock (in shares)		745,000	(745,000)
Class B Common Stock conversion to Class A Common Stock		8	(8)
Treasury Stock purchased (in shares)		(1,586,000)		1,586,000
Treasury Stock purchased	(22,168)			(22,168)
Ending Balance at Feb. 26, 2011	490,245	580	13	(79,431)	197,036	372,047
Ending Balance (in shares) at Feb. 26, 2011		51,037,000	1,351,000	6,964,000
Net income	84,804					84,804
Cash dividends declared ($0.21 in 2012, $0.17 in 2011, $0.13 in 2010 per share)	(10,967)					(10,967)
Non-qualified Class A Common Stock options exercised and related tax benefits (in shares)		1,490,000		(1,490,000)
Non-qualified Class A Common Stock options exercised and related tax benefits	21,665			11,237	10,428
Share-based compensation	5,187				5,187
Restricted shares vested, net of repurchase for taxes (in shares)		288,000	58,000	(288,000)
Restricted shares vested, net of repurchase for taxes	(1,491)			17	(1,508)
Shares issued under employee stock purchase plan (in shares)	27,000	27,000		(27,000)
Shares issued under employee stock purchase plan	462			334	128
Class B Common Stock conversion to Class A Common Stock (in shares)		838,000	(838,000)
Class B Common Stock conversion to Class A Common Stock		8	(8)
Treasury Stock purchased (in shares)		(2,885,000)		2,885,000
Treasury Stock purchased	(60,368)			(60,368)
Ending Balance at Mar. 03, 2012	$ 529,537	$ 588	$ 5	$ (128,211)	$ 211,271	$ 445,884
Ending Balance (in shares) at Mar. 03, 2012		50,795,000	571,000	8,044,000