Note 16. Equity Incentive Plans and Employee Benefits (Details) - Stock Option Activities (USD $)	3 Months Ended
	Nov. 02, 2013	Aug. 03, 2013	May 04, 2013
Stock Option Activities [Abstract]
Number of Shares Outstanding	4,216,894	4,586,004	5,055,787
Weighted Average Exercise Price (in Dollars per share)	$ 11.57	$ 12.65	$ 12.50
Options exercisable as of:
November 2, 2013	3,065,559
November 2, 2013 (in Dollars per share)	$ 12.76
Number of Shares Outstanding		368,680
Weighted Average Exercise Price per Share (in Dollars per share)		$ 4.59
Number of Shares Outstanding	(1,387)	(8,878)	(9,949)
Weighted Average Exercise Price per Share (in Dollars per share)	$ 0.95	$ 2.21	$ 3.26
Number of Shares Outstanding	(223,542)	(728,912)	(459,834)
Weighted Average Exercise Price per Share (in Dollars per share)	$ 12.21	$ 15.07	$ 11.18
Number of Shares Outstanding	3,991,965	4,216,894	4,586,004
Weighted Average Exercise Price (in Dollars per share)	$ 11.60	$ 11.57	$ 12.65