Investments (Details 4) - USD ($) $ in Thousands	3 Months Ended
Jun. 30, 2018	Jul. 01, 2017
Investment [Line Items]
Marketable Equity Securities Unrealized Gain	$ 1,610
Marketable Equity Securities Realized Loss	(40)
Marketable Equity Securities Gain (Loss)	$ 1,570
Equity Securities [Member]
Investment [Line Items]
Available-for-sale Securities, Gross Realized Gains		$ 165
Available-for-sale Securities, Gross Realized Losses		(51)
Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments		$ 114

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

No definition available.

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

No definition available.

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This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

No definition available.

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- Definition

Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84241550&loc=SL75117546-209714

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Amount of realized loss from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84241550&loc=SL75117546-209714

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Amount of unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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