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Basis of Presentation and Summary of Significant Accounting Policies (Details - Marketable securities) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | $ 3,226 | $ 2,029
Corporate Bond Securities [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 540 | 537
US Treasury Securities [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 1,181 |
US Agency And Government Sponsored Securities [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 1,119 | 1,107
US Treasury Notes Securities [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 386 | 385
Fair Value, Inputs, Level 1 [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 540 | 537
Fair Value, Inputs, Level 1 [Member] | Corporate Bond Securities [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 540 | 537
Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 0 |
Fair Value, Inputs, Level 1 [Member] | US Agency And Government Sponsored Securities [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 0 | 0
Fair Value, Inputs, Level 1 [Member] | US Treasury Notes Securities [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 2,686 | 1,492
Fair Value, Inputs, Level 2 [Member] | Corporate Bond Securities [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 0 | 0
Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 1,181 |
Fair Value, Inputs, Level 2 [Member] | US Agency And Government Sponsored Securities [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | 1,119 | 1,107
Fair Value, Inputs, Level 2 [Member] | US Treasury Notes Securities [Member] |  |
Platform Operator, Crypto Asset [Line Items] |  |
Total Fair Value | $ 386 | $ 385

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