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Note 3 – Marketable Securities | 12 Months Ended
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Apr. 30, 2022
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 April 30, 2022:
I. | Cost, unrealized gains or losses, and fair values
|  | Cost |  | Unrealized Gains (Losses) |  | Fair Value
Money market funds |  | $ | 799,047 |  |  | $ | 889 |  |  | $ | 799,936 |
Asset-backed securities |  |  | 2,894,512 |  |  |  | (32,953 | ) |  |  | 2,861,559 |
Corporate bonds |  |  | 42,571,104 |  |  |  | (1,442,230 | ) |  |  | 41,128,874 |
Total |  | $ | 46,264,663 |  |  | $ | (1,474,294 | ) |  | $ | 44,790,369 |
II. | Contractual Maturities
|  | One Year or Less |  | One to Five Years |  | Over Five Years |  | Total
Money market funds |  | $ | 799,936 |  |  | $ | — |  |  | $ | — |  |  | $ | 799,936 |
Asset-backed securities |  |  | — |  |  |  | 2,861,559 |  |  |  | — |  |  |  | 2,861,559 |
Corporate bonds |  |  | 21,702,648 |  |  |  | 18,877,593 |  |  |  | 548,633 |  |  |  | 41,128,874 |
Total |  | $ | 22,502,584 |  |  | $ | 21,739,152 |  |  | $ | 548,633 |  |  | $ | 44,790,369 |
III. | Fair Value Hierarchy
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Money market funds |  | $ | 799,936 |  |  | $ | — |  |  | $ | — |  |  | $ | 799,936 |
Asset-backed securities |  |  | — |  |  |  | 2,861,559 |  |  |  | — |  |  |  | 2,861,559 |
Corporate bonds |  |  | — |  |  |  | 41,128,874 |  |  |  | — |  |  |  | 41,128,874 |
Total |  | $ | 799,936 |  |  | $ | 43,990,433 |  |  | $ | — |  |  | $ | 44,790,369 |

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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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