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Employee Benefit Plans	3 Months Ended
Employee Benefit Plans	Oct. 26, 2013
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	Multi-Employer Benefit Plans Certain of the Company's subsidiaries, including certain of the Acquired Subsidiaries, participate in multi-employer benefit pension plans under the terms of collective-bargaining agreements. The Company's contributions were $0.8 million and $0.7 million during the three months ended October 26, 2013 and October 27, 2012, respectively. The increase in contributions during the three months ended October 26, 2013 is related to contributions from the Acquired Subsidiaries. The risks of participating in a multi-employer defined benefit pension plan are different from single-employer plans in the following aspects: (a) assets contributed to the multi-employer plan by one employer may be used to provide benefits to employees of any other participating employers; (b) if a participating employer stops contributing to the plan, the unfunded obligations of the plan may become obligations of the remaining participating employers; and (c) if the Company chooses to stop participating in the multi-employer plan, the Company may be required to pay the plan an amount based on the underfunded status of the plan, referred to as a withdrawal liability. The Company has not incurred withdrawal liabilities related to the plans as of October 26, 2013 or July 27, 2013.