4 - Pension And Other Postretirement Benefits Disclosure: Schedule of Net Benefit Costs (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
Details
Defined Benefit Plan, Service Cost	$ 818	$ 664	$ 2,454	$ 1,992
Defined Benefit Plan, Interest Cost	618	678	1,854	2,034
Defined Benefit Plan, Expected Return on Plan Assets	(694)	(631)	(2,082)	(1,893)
Defined Benefit Plan Amortization Of (Gains) Losses	529	330	1,587	990
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)	2	2	6	6
Defined Benefit Plan, Net Periodic Benefit Cost	$ 1,273	$ 1,043	$ 3,819	$ 3,129