Shareholders' Equity and Share-Based Compensation (Details 6) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014
Summary of share-based compensation by type of award
Stock options	$ 138us-gaap_StockOptionPlanExpense	$ 177us-gaap_StockOptionPlanExpense	$ 371us-gaap_StockOptionPlanExpense	$ 594us-gaap_StockOptionPlanExpense
Restricted stock units	511us-gaap_RestrictedStockExpense	490us-gaap_RestrictedStockExpense	1,393us-gaap_RestrictedStockExpense	1,449us-gaap_RestrictedStockExpense
Performance stock units	505psem_PerformanceStockUnits		936psem_PerformanceStockUnits
Stock purchase plan	56psem_StockPurchasePlan	50psem_StockPurchasePlan	170psem_StockPurchasePlan	154psem_StockPurchasePlan
Total share-based compensation expense	$ 1,210us-gaap_ShareBasedCompensation	$ 717us-gaap_ShareBasedCompensation	$ 2,869us-gaap_ShareBasedCompensation	$ 2,197us-gaap_ShareBasedCompensation

Performance stock units.

No definition available.

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- Definition

Stock purchase plan.

+ References

No definition available.

+ Details

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- Definition

The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

+ Details

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

+ Details

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- Details

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- Definition

The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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