Marketable Securities (Narrative) (Details) $ in Thousands	Dec. 24, 2016 USD ($) security	Mar. 26, 2016 USD ($) security
Marketable Securities [Abstract]
Gross Unrealized Losses \| $	$ (64)	$ (100)
Amortized cost on available for sale securities held at gross unrealized loss \| $	$ 72,400	$ 64,700
Number of securities in unrealized loss position \| security	18	21
Number of securities in unrealized loss position greater than one year \| security	4	2

Amortized cost of available for sale securities in an unrealized loss position.

No definition available.

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- Definition

Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563

+ Details

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- Definition

Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

+ Details

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- Definition

Number of investment positions in available-for-sale investments that have been in a continuous unrealized loss position for greater than or equal to a year for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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