CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 28, 2017	Jan. 23, 2016	Jan. 28, 2017	Jan. 23, 2016
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income	$ 5,992	$ 6,284	$ 10,101	$ 10,714
Other comprehensive income:
Amortization of pension actuarial loss, net of tax	224	284	491	568
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments, Net of Tax	(372)	0	(372)	0
Comprehensive income	$ 6,588	$ 6,568	$ 10,964	$ 11,282