XML 30 R16.htm IDEA: XBRL DOCUMENT
v3.23.3

Note 2 - Cash, Cash Equivalents, and Investments (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2023
Notes Tables |
Cash, Cash Equivalents and Investments [Table Text Block] |
|  | September 30, 2023 (Unaudited) |
|  |  |  |  |  |  |  |  |  | Allowance |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Level |  |  |  |  |  |  | for |  |  | Unrealized |  |  | Unrealized |  |  |  |  |
|  | (1) |  |  | Fair Value |  |  | Credit Losses |  |  | Holding Gains |  |  | Holding Losses |  |  | Adjusted Cost |
Cash and Cash Equivalents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  |  |  |  |  | $ | 434,388 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 434,388 |
Money Market Funds (2) |  |  | 1 |  |  |  | 6,968,788 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 6,968,788 |
Subtotal |  |  |  |  |  |  | 7,403,176 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 7,403,176 |
Short-Term Investment Securities (3) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate Bonds (4)(5) |  |  | 2 |  |  |  | 772,483 |  |  |  | — |  |  |  | — |  |  |  | 321 |  |  |  | 772,804 |
Total |  |  |  |  |  | $ | 8,175,659 |  |  | $ | — |  |  | $ | — |  |  | $ | 321 |  |  | $ | 8,175,980 |
|  | December 31, 2022 (Audited) |
|  |  |  |  |  |  |  |  | Allowance |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Level |  |  |  |  |  |  | for |  |  | Unrealized |  |  | Unrealized |  |  |  |  |
|  | (1) |  |  | Fair Value |  |  | Credit Losses |  |  | Holding Gains |  |  | Holding Losses |  |  | Adjusted Cost |
Cash and Cash Equivalents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  |  |  |  | $ | 26,782 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 26,782 |
Money Market Funds (2) |  | 1 |  |  |  | 5,767,490 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5,767,490 |
Subtotal |  |  |  |  |  | 5,794,272 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5,794,272 |
Short-Term Investment Securities (3) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate Bonds (4)(5) |  | 2 |  |  |  | 6,800,062 |  |  |  | — |  |  |  | — |  |  |  | (47,208 | ) |  |  | 6,847,270 |
Total |  |  |  |  | $ | 12,594,334 |  |  | $ | — |  |  | $ | — |  |  | $ | (47,208 | ) |  | $ | 12,641,542 |

X
- Definition Tabular disclosure of the components of cash, cash equivalents, and investments. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration