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INVESTMENTS - Cash and Financial Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Cash And Cash Equivalents And Marketable securities [Line Items] |  |  |  |  |
Cost, Cash and cash equivalents | $ 108,016 |  | $ 108,016 |  | $ 94,440
Cost, Total | 164,721 |  | 164,721 |  | 149,162
Unrealized Gains (Losses), Equity securities | (4,188) | $ 0 | (1,750) | $ 0 |
Unrealized Gains (Losses), Total | (1,563) |  | (1,563) |  | 569
Accrued Interest, Debt securities | 347 |  | 347 |  | 310
Estimated Fair Value, Total | 163,505 |  | 163,505 |  | 150,041
Investment Securities | 55,489 |  | 55,489 |  | 55,601
Level 1 |  |  |  |  |
Cash And Cash Equivalents And Marketable securities [Line Items] |  |  |  |  |
Cost, Equity securities | 10,000 |  | 10,000 |  | 10,000
Cost, Total | 31,162 |  | 31,162 |  | 30,944
Unrealized Gains (Losses), Equity securities |  |  | (1,600) |  | 150
Unrealized Gains (Losses), Total | (1,642) |  | (1,642) |  | 276
Accrued Interest, Debt securities | 74 |  | 74 |  | 40
Estimated Fair Value, Equity securities | 8,400 |  | 8,400 |  | 10,150
Estimated Fair Value, Total | 29,594 |  | 29,594 |  | 31,260
Investment Securities | 24,560 |  | 24,560 |  | 25,598
Government & agency securities | Level 1 |  |  |  |  |
Cash And Cash Equivalents And Marketable securities [Line Items] |  |  |  |  |
Cost, Debt securities | 16,128 |  | 16,128 |  | 15,282
Unrealized Gains (Losses), Debt securities | (42) |  | (42) |  | 126
Accrued Interest, Debt securities | 74 |  | 74 |  | 40
Estimated Fair Value, Debt securities | 16,160 |  | 16,160 |  | 15,448
Corporate bonds | Level 2 |  |  |  |  |
Cash And Cash Equivalents And Marketable securities [Line Items] |  |  |  |  |
Cost, Debt securities | 30,577 |  | 30,577 |  | 29,440
Unrealized Gains (Losses), Debt securities | 79 |  | 79 |  | 293
Accrued Interest, Debt securities | 273 |  | 273 |  | 270
Estimated Fair Value, Debt securities | 30,929 |  | 30,929 |  | 30,003
Cash and cash equivalents, excluding money market accounts |  |  |  |  |
Cash And Cash Equivalents And Marketable securities [Line Items] |  |  |  |  |
Cost, Cash and cash equivalents | 102,982 |  | 102,982 |  | 88,778
Estimated Fair Value, Cash and cash equivalents | 102,982 |  | 102,982 |  | 88,778
Money market accounts | Level 1 |  |  |  |  |
Cash And Cash Equivalents And Marketable securities [Line Items] |  |  |  |  |
Cost, Cash and cash equivalents | 5,034 |  | 5,034 |  | 5,662
Estimated Fair Value, Cash and cash equivalents | $ 5,034 |  | $ 5,034 |  | $ 5,662

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483467/210-10-45-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-4 + Details
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- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(9)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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