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Investments (Available for sale equity investments) (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Mar. 31, 2019
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Marketable Securities [Abstract] |  |
Amortized cost, equity investments | $ 14,851 | $ 17,574
Estimated market value, equity investments | 25,125 | 24,168
Common stocks [Member] |  |
Marketable Securities [Abstract] |  |
Amortized cost, equity investments | 9,775 | 10,123
Estimated market value, equity investments | 20,015 | 17,379
Non-redeemable preferred stocks [Member] |  |
Marketable Securities [Abstract] |  |
Amortized cost, equity investments | 5,076 | 7,451
Estimated market value, equity investments | $ 5,110 | $ 6,789

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- Definition Amortized cost of 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 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454 + Details
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- Definition Amount of equity securities categorized neither as held-to-maturity nor as trading. + References No definition available. + Details
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- Details
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