Note 8 - Pension Plans: Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 27, 2013	Jul. 28, 2012	Jul. 30, 2011
Details
Defined Benefit Plan, Benefit Obligation, Beginning Balance	$ 67,179	$ 55,480
Defined Benefit Plan, Service Cost	3,279	2,694	2,903
Defined Benefit Plan, Interest Cost	2,479	2,701	2,575
Defined Benefit Plan, Benefits Paid	(2,422)	(1,023)
Defined Benefit Plan Actuarial (Gains) Losses	(6,871)	7,327
Defined Benefit Plan, Benefit Obligation, Ending Balance	63,644	67,179	55,480
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance	37,416	33,967
Defined Benefit Plan, Actual Return on Plan Assets	5,334	1,245
Defined Benefit Plan, Contributions by Employer	3,254	3,227
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance	43,582	37,416	33,967
Defined Benefit Plan, Funded Status of Plan	$ (20,062)	$ (29,763)