Long-Term Debt 2016 Term Loan Facility (Details) - 2016 Term Loan Facility [Member]
$ in Thousands
3 Months Ended
Oct. 29, 2016
USD ($)
Debt Instrument [Line Items]  
Debt Instrument, Basis Spread on Variable Rate 4.25%
Debt Instrument, Periodic Payment, Principal $ 10,550