Convertible Senior Notes (Interest expense recognized related to 2018 Notes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Dec. 28, 2014	Dec. 29, 2013	Dec. 28, 2014	Dec. 29, 2013
Debt Disclosure [Abstract]
Contractual coupon interest expense	$ 766	$ 383	$ 1,531	$ 383
Amortization of debt issuance costs	181us-gaap_AmortizationOfFinancingCosts	79us-gaap_AmortizationOfFinancingCosts	357us-gaap_AmortizationOfFinancingCosts	79us-gaap_AmortizationOfFinancingCosts
Accretion of debt discount	1,459	686	2,896	686
Total	$ 2,406us-gaap_InterestExpenseDebt	$ 1,148us-gaap_InterestExpenseDebt	$ 4,784us-gaap_InterestExpenseDebt	$ 1,148us-gaap_InterestExpenseDebt
Effective interest rate	6.62%us-gaap_DebtWeightedAverageInterestRate	6.62%us-gaap_DebtWeightedAverageInterestRate	6.62%us-gaap_DebtWeightedAverageInterestRate	6.62%us-gaap_DebtWeightedAverageInterestRate

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

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Weighted average interest rate of debt outstanding.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs.

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