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Note 11 - Comprehensive Income - Components of Comprehensive Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2019 | Apr. 30, 2018 | Apr. 30, 2017
Other comprehensive income (loss), available-for-sale securities adjustment, amount before tax | $ 1,133 | $ 285 | $ 515
Other comprehensive income (loss), available-for-sale securities, tax expense | (238) | 40 | (182)
Other comprehensive income (loss), available-for-sale securities adjustment, amount net of tax | 895 |  |
Change in unrealized gains on securities, net of taxes | 895 | 325 | 333
Change in unrealized gains (losses) on securities, amount before tax |  | 437 | 554
Change in unrealized gains (losses) on securities, tax expense |  | 8 | (196)
Change in unrealized gains (losses) on securities, amount net of tax |  | 445 | 358
Less: Gains realized in net income, amount before tax |  | (152) | (39)
Less: Gains realized in net income, tax expense |  | 32 | 14
Less: Gains realized in net income, amount net of tax |  | (120) | (25)
Other comprehensive income (loss), available-for-sale securities adjustment, amount before tax | 1,133 | 285 | 515
Other comprehensive income (loss), available-for-sale securities, tax expense | (238) | 40 | (182)
Other comprehensive income (loss), available-for-sale securities adjustment, amount net of tax | $ 895 | $ 325 | $ 333

X
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- Definition Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569643-111683 + Details
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- Definition Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569643-111683 + Details
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