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Investments (Details 4) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 29, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017
Gain (Loss) on Securities [Line Items] |  |  |  |
Debt Securities, Available-for-sale, Realized Loss | $ 0 | $ 0 | $ 0 | $ (10,000)
Value of investments to be other-than-temporarily impaired |  |  | 0 |
Equity Securities gain on investments held |  |  | 1,298,000 |
Equity Securities Loss on investments held | (312,000) | 0 |  | 0
Equity Securities loss on investments sold | (13,000) | 0 | (53,000) | 0
Gain (Loss) on Equity Securities | (325,000) |  | 1,245,000 |
Equity Securities [Member] |  |  |  |
Gain (Loss) on Securities [Line Items] |  |  |  |
Available-for-sale Securities, Gross Realized Gains | 0 | 570,000 | 0 | 735,000
Available-for-sale Securities, Gross Realized Losses | $ 0 | (51,000) | $ 0 | (112,000)
Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments |  | $ 519,000 |  | $ 623,000

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- Definition 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. + Details
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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563 + Details
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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 + Details
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- Definition 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 + Details
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- Definition Amount of unrealized 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/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 + Details
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- Definition The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. + References No definition available. + Details
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