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Marketable Securities - Available-for-sale Securities by Major Security Type (Details) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023
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Marketable Securities |  |
Amortized cost |  | $ 4,412,000
Gross unrealized holding gains |  | 7,000
Gross unrealized holding losses |  | (23,000)
Estimated fair value | $ 0 | 4,396,000
US Treasury Securities [Member] |  |
Marketable Securities |  |
Amortized cost |  | 1,804,000
Gross unrealized holding gains |  | 0
Gross unrealized holding losses |  | (1,000)
Estimated fair value | 0 | 1,803,000
Mutual Fund [Member] |  |
Marketable Securities |  |
Amortized cost |  | 1,498,000
Gross unrealized holding gains |  | 7,000
Gross unrealized holding losses |  | 0
Estimated fair value | 0 | 1,505,000
Certificates of Deposit [Member] |  |
Marketable Securities |  |
Amortized cost |  | 103,000
Gross unrealized holding gains |  | 0
Gross unrealized holding losses |  | 0
Estimated fair value | 0 | 103,000
Corporate bonds and notes [Member] |  |
Marketable Securities |  |
Amortized cost |  | 1,007,000
Gross unrealized holding gains |  | 0
Gross unrealized holding losses |  | (22,000)
Estimated fair value | $ 0 | $ 985,000

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- Definition The amount of accumulated gross unrealized gain on investment in marketable securities classified as available-for-sale securities. + References No definition available. + Details
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- Definition The amount of accumulated gross unrealized loss on investment in marketable securities classified as available-for-sale securities. + References No definition available. + Details
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- Definition The amount of amortized cost of marketable securities classified as available-for-sale securities. + References No definition available. + Details
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- Definition Amount of investment in marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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