Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
Jun. 30, 2015	Jun. 30, 2014
Segment reporting information [Line Items]
Net sales	$ 533,952	$ 528,876
Gross Profit	309,017	306,519
Semiconductor products [Member]
Segment reporting information [Line Items]
Net sales	510,689	508,439
Gross Profit	285,754	286,082
Technology licensing [Member]
Segment reporting information [Line Items]
Net sales	23,263	20,437
Gross Profit	$ 23,263	$ 20,437

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1,2)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: 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=26872669&loc=d3e20235-122688

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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.

+ References

No definition available.

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- Details

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- Details

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