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Note 8 - Federal, State and Local Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Oct. 31, 2018 | Apr. 30, 2018
--- | --- | ---
Deferred tax liability | $ 11,514 | $ 11,714
Deferred tax liability | 11,514 | 11,714
Domestic Tax Authority [Member] |  |
Deferred gain on deconsolidation of EAM | 10,664 | 10,658
Deferred non-cash post-employment compensation | (372) | (372)
Depreciation and amortization | 110 | 119
Unrealized loss (gain) on securities held for sale | 256 | 208
Deferred charges | (336) | (331)
Other, asset | 223 | 210
Deferred tax liability | 10,545 | 10,492
Deferred tax liability | 10,545 | 10,492
State and Local Jurisdiction [Member] |  |
Deferred gain on deconsolidation of EAM | 1,028 | 1,299
Deferred non-cash post-employment compensation | (36) | (45)
Depreciation and amortization | 11 | 15
Deferred tax liability | 969 | 1,222
Other | 34 | 47
Deferred tax liability | $ 969 | $ 1,222

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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=115928272&loc=d3e28680-109314 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 + Details
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, with jurisdictional netting and classified as noncurrent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e31958-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e31931-109318 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e31917-109318 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=115928272&loc=d3e28680-109314 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 + Details
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- Definition Amount deferred tax asset attributable to deductible temporary differences from deferred charges, expected to be realized or consumed within one year or operating cycle, if longer. + References No definition available. + Details
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- Definition Amount of deferred tax asset attributable to deductible temporary differences from deferred non-cash postemployment compensation, expected to be realized or consumed after one year (or the normal operating cycle, if longer). + References No definition available. + Details
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- Definition Amount of deferred tax (asset) liability attributable to deductible temporary differences from depreciation and amortization, expected to be realized or consumed after one year (or the normal operating cycle, if longer). + References No definition available. + Details
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- Definition The amount of deferred tax liabilities (asset) related to the unrealized loss (gain) on securities held for sale. + References No definition available. + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from deferred gain on deconsolidation of subsidiary, expected to be realized or consumed after one year (or the normal operating cycle, if longer). + References No definition available. + Details
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