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Note 3 – Marketable Securities | 9 Months Ended
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Jan. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
Note 3 – Marketable Securities | Note 3 – Marketable Securities The following tables set forth information related to our marketable securities as of January 31, 2023:
I. | Cost, unrealized gains or losses, and fair values
|  | Cost |  | Unrealized Gains (Losses) |  | Fair Value
Asset-backed securities |  | $ | 924,509 |  |  | $ | (14,218 | ) |  | $ | 910,291 |
Corporate bonds |  |  | 20,951,812 |  |  |  | (1,132,070 | ) |  |  | 19,819,742 |
Total |  | $ | 21,876,321 |  |  | $ | (1,146,288 | ) |  | $ | 20,730,033 |
II. | Contractual Maturities
|  | One Year or Less |  | One to Three Years |  | Three to Five Years |  | Total
Asset-backed securities |  | $ | — |  |  | $ | 910,291 |  |  | $ | — |  |  | $ | 910,291 |
Corporate bonds |  |  | 6,494,035 |  |  |  | 12,744,060 |  |  |  | 581,647 |  |  |  | 19,819,742 |
Total |  | $ | 6,494,035 |  |  | $ | 13,654,351 |  |  | $ | 581,647 |  |  | $ | 20,730,033 |
III. | Fair Value Hierarchy
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Asset-backed securities |  | $ | — |  |  | $ | 910,291 |  |  | $ | — |  |  | $ | 910,291 |
Corporate bonds |  |  | — |  |  |  | 19,819,742 |  |  |  | — |  |  |  | 19,819,742 |
Total |  | $ | — |  |  | $ | 20,730,033 |  |  | $ | — |  |  | $ | 20,730,033 |

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2176304 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) + Details
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