| Fair Value Disclosures [Text Block] |
(2) Fair Value of Financial Instruments
In accordance with ASC 820 “Fair Value Measurements and Disclosures”, the Company defines its’s fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value, in the following:
| | • | Level 1 Pricing inputs are quoted prices available in active markets for identical investments as of the reporting date. |
| | • | Level 2 Pricing inputs are quoted for similar investments, or inputs that are observable, either directly or indirectly, for substantially the full term through corroboration with observable market data. Level 2 includes investments valued at quoted prices adjusted for legal or contractual restrictions specific to these investments. |
| | • | Level 3 Pricing inputs are unobservable for the investment; that is, the inputs reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability. |
The Company’s fair value hierarchy for its cash equivalents and marketable securities as of December 31, 2025 and 2024, respectively, was as follows:
| December 31, 2025 | | Level 1 | | | Level 2 | | | Level 3 | | | Total | |
| Money market securities | | $ | 1,210 | | | $ | — | | | $ | — | | | $ | 1,210 | |
| Commercial paper | | | — | | | | 7,093 | | | | — | | | | 7,093 | |
| Federal agency notes | | | — | | | | 2,223 | | | | — | | | | 2,223 | |
| Corporate notes | | | — | | | | 923 | | | | — | | | | 923 | |
| Total | | $ | 1,210 | | | $ | 10,239 | | | $ | — | | | $ | 11,449 | |
| December 31, 2024 | | Level 1 | | | Level 2 | | | Level 3 | | | Total | |
| Money market securities | | $ | 112 | | | $ | — | | | $ | — | | | $ | 112 | |
| Commercial paper | | | — | | | | 10,633 | | | | — | | | | 10,633 | |
| U.S. treasuries | | | — | | | | 9,192 | | | | — | | | | 9,192 | |
| Federal agency notes | | | — | | | | 5,317 | | | | — | | | | 5,317 | |
| Total | | $ | 112 | | | $ | 25,142 | | | $ | — | | | $ | 25,254 | |
The fair value maturities of the Company’s cash equivalents and marketable securities as of December 31, 2025 are as follows:
| | | Maturities by Period | |
| | | | | | | Less than | | | 1-5 | | | 5-10 | | | More than | |
| | | Total | | | 1 year | | | years | | | years | | | 10 years | |
| Cash equivalents and marketable securities | | $ | 11,449 | | | $ | 11,449 | | | $ | — | | | $ | — | | | $ | — | |
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