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v3.22.2.2

Note 2 - Investments (Details Textual) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 31, 2022 | Oct. 31, 2021 | Oct. 31, 2022 | Oct. 31, 2021 | Apr. 30, 2022
Equity Securities, FV-NI, Cost | $ 13,212,000 |  | $ 13,212,000 |  | $ 13,318,000
Equity Securities, FV-NI, Total | 17,122,000 |  | 17,122,000 |  | 17,647,000
Proceeds from Sale of Equity Securities, FV-NI |  |  | 1,016,000 | $ 687,000 |
Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent, Total | (3,000) | $ 0 | 2,000 | (4,000) |
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax |  |  | 1,000 | (1,000) |
Equity Securities, FV-NI, Gain (Loss), Total |  |  | (9,000) | 35,000 |
Equity Method Investments | 58,940,000 |  | 58,940,000 |  | 59,971,000
EAM Trust [Member] |  |  |  |  |
Fair Value of Contributed Capital at Inception | 55,805,000 |  | 55,805,000 |  |
Cash and Liquid Securities in Excess of Working Capital Requirements Contributed to Capital Account | 5,820,000 |  | 5,820,000 |  |
Equity Method Investment, Other than Temporary Impairment |  |  | $ 0 |  |
Percentage of Non Voting Profit Interest |  |  | 50.00% |  |
Accrued Non Voting Revenues and Non Voting Profits Interests Payable | 2,797,000 |  | $ 2,797,000 |  | 3,657,000
Fixed Income Securities [Member] |  |  |  |  |
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale, Total |  |  | 0 | $ 2,496,000 |
AOCI, Debt Securities, Available-for-Sale, Adjustment, after Tax | $ 28,000 |  | 28,000 |  | 30,000
Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent, Total |  |  | 3,000 |  | (34,000)
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax |  |  | $ (1,000) |  | $ (7,000)
Debt Securities, Available-for-Sale, Weighted Average Yield | 2.50% |  | 2.50% |  | 0.60%
Fixed Income Securities [Member] | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] |  |  |  |  |
AOCI Tax, Attributable to Parent | $ 6,000 |  | $ 6,000 |  | $ 6,000

X
- Definition Amount, after tax, of accumulated unrealized gain (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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e681-108580 + Details
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- Definition Weighted average yield 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/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (a) + Details
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- Definition Amount, before adjustment, of tax expense (benefit) for unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e640-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669646-108580 + Details
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