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Fair Value Measurements - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value Measurements |  |
Total | $ 0 | $ 3,010
Level 1 [Member] |  |
Fair Value Measurements |  |
Total |  | 0
Level 2 [Member] |  |
Fair Value Measurements |  |
Total |  | 3,010
Level 3 [Member] |  |
Fair Value Measurements |  |
Total |  | 0
Corporate bonds and notes [Member] |  |
Fair Value Measurements |  |
Total |  | 1,440
Corporate bonds and notes [Member] | Level 1 [Member] |  |
Fair Value Measurements |  |
Total |  | 0
Corporate bonds and notes [Member] | Level 2 [Member] |  |
Fair Value Measurements |  |
Total |  | 1,440
Corporate bonds and notes [Member] | Level 3 [Member] |  |
Fair Value Measurements |  |
Total |  | 0
Municipal bonds [Member] |  |
Fair Value Measurements |  |
Total |  | 1,570
Municipal bonds [Member] | Level 1 [Member] |  |
Fair Value Measurements |  |
Total |  | 0
Municipal bonds [Member] | Level 2 [Member] |  |
Fair Value Measurements |  |
Total |  | 1,570
Municipal bonds [Member] | Level 3 [Member] |  |
Fair Value Measurements |  |
Total |  | $ 0

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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