Other Income, Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 29, 2016	Oct. 24, 2015
Other Income and Expenses [Abstract]
Other Financial Services Costs	$ 600
Gain on sale of fixed assets	1,443	$ 1,136
Miscellaneous (expense) income, net	(503)	333
Total other income, net	$ 940	$ 1,469