3 - Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 27, 2013	Apr. 28, 2012	Apr. 27, 2013	Apr. 28, 2012
Class A Common Stock
Net Income (Loss) Available to Common Stockholders, Basic	$ 3,245	$ 4,016	$ 13,698	$ 13,757
Two Class Income Allocation Class B Conversion to Class A	1,262	2,356	5,394	8,091
Two Class Income Distribution Share Based Compensation	5	16		67
Net Income (Loss) Available to Common Stockholders, Diluted	4,512	6,388	19,092	21,915
Weighted Average Number of Shares Outstanding, Basic	8,492	7,044	8,146	7,030
Two Class Share Allocation Class B Conversion to Class A	5,007	6,362	5,336	6,366
Incremental Common Shares Attributable to Share-based Payment Arrangements	96	95	110	81
Weighted Average Number of Shares Outstanding, Diluted	13,595	13,501	13,592	13,477
Class B Common Stock
Net Income (Loss) Available to Common Stockholders, Basic	1,262	2,356	5,394	8,091
Two Class Income Distribution Share Based Compensation	(3)	(11)		(39)
Net Income (Loss) Available to Common Stockholders, Diluted	$ 1,259	$ 2,345	$ 5,394	$ 8,052
Weighted Average Number of Shares Outstanding, Basic	5,007	6,362	5,336	6,366
Weighted Average Number of Shares Outstanding, Diluted	5,007	6,362	5,336	6,366