Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity, as a percentage of total gross margin.

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The maximum percentage of consolidated revenue for the period accounted for by a single customer.

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The number of reportable segments which correspond to the way the Company manages its business and interacts with customers. These reportable segments correspond to operating segments.

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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process), excluding royalties.

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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process), as a percentage of total revenue.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13537-108611

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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-Paragraph 38
-Subparagraph b(1)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 5
-Section 03
-Paragraph 1

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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Revenue earned during the period from the leasing or otherwise lending to a third party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights.

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-Publisher SEC
-Name Regulation S-X (SX)
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-Article 5
-Section 03
-Paragraph 1

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Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 26, 2011	Mar. 27, 2011	Dec. 26, 2010	Sep. 26, 2010	Jun. 27, 2010	Mar. 28, 2010	Dec. 27, 2009	Sep. 27, 2009	Jun. 26, 2011	Jun. 27, 2010	Jun. 28, 2009
Segment Information [Abstract]
Number of reportable segments									6
Schedule of Segment Reporting Information [Line Items]
Revenues	$ 317,249	$ 296,717	$ 281,744	$ 280,867	$ 263,796	$ 241,886	$ 210,244	$ 179,371	$ 1,176,577	$ 895,297	$ 740,419
Percentage of total (in hundredths)									100.00%	100.00%	100.00%
Gross margin (in hundredths)									39.50%		30.40%
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from unaffiliated customers, excluding royalties									1,169,156	885,850	712,745
Royalties (unallocated)									7,421	9,447	27,674
Long-lived assets	507,178				394,363				507,178	394,363	423,624
Concentration Risk [Line Items]
Maximum percentage of consolidated revenue accounted for by a single customer (in hundredths)											10.00%
Ongoing Customer Segments [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues									1,169,156	885,850	674,627
Percentage of total (in hundredths)									99.40%	98.90%	91.10%
Gross margin (in hundredths)									39.10%	32.00%	29.90%
Power Management Devices [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues									456,764	345,610	233,737
Percentage of total (in hundredths)									38.80%	38.60%	31.60%
Gross margin (in hundredths)									31.60%	16.50%	10.90%
Energy-Saving Products [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues									275,044	185,404	151,090
Percentage of total (in hundredths)									23.40%	20.70%	20.40%
Gross margin (in hundredths)									44.70%	40.30%	36.70%
Automotive Products [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues									112,174	72,932	54,061
Percentage of total (in hundredths)									9.50%	8.10%	7.30%
Gross margin (in hundredths)									29.90%	24.20%	21.50%
Enterprise Power [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues									134,627	128,691	87,473
Percentage of total (in hundredths)									11.50%	14.40%	11.80%
Gross margin (in hundredths)									44.10%	42.30%	37.10%
HiRel [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues									190,547	153,213	148,266
Percentage of total (in hundredths)									16.20%	17.10%	20.00%
Gross margin (in hundredths)									51.20%	51.70%	51.70%
Ongoing segments [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues									1,176,577	895,297	702,300
Percentage of total (in hundredths)									100.00%	100.00%	94.90%
Gross margin (in hundredths)									39.50%	32.70%	32.60%
Intellectual Property [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues									7,421	9,447	27,673
Percentage of total (in hundredths)									0.60%	1.10%	3.70%
Gross margin (in hundredths)									100.00%	100.00%	100.00%
TS [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues											38,119
Percentage of total (in hundredths)											5.10%
Gross margin (in hundredths)											(11.30%)
The United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from unaffiliated customers, excluding royalties									254,593	204,474	218,781
Long-lived assets	306,741				235,021				306,741	235,021	247,546
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from unaffiliated customers, excluding royalties									674,654	516,993	364,795
Long-lived assets	44,695				28,139				44,695	28,139	30,388
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from unaffiliated customers, excluding royalties									239,909	164,383	129,169
Long-lived assets	$ 155,742				$ 131,203				$ 155,742	$ 131,203	$ 145,690
Consolidated Revenues [Member] \| Distribution Customer 1 Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk (in hundredths)	12.70%				13.20%				12.70%	13.20%
Distribution Customer 2 Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk (in hundredths)	11.80%				11.20%				11.80%	11.20%