Financial Instruments - Fair Value (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Financial Instruments | ||
| Marketable securities | $ 107,919 | $ 60,850 |
| Book Value | ||
| Financial Instruments | ||
| Cash and cash equivalents | 546,164 | 453,384 |
| Marketable securities | 107,919 | 60,850 |
| Fair Value | ||
| Financial Instruments | ||
| Cash and cash equivalents | 546,164 | 453,384 |
| Marketable securities | 107,919 | 60,850 |
| Secured long-term debt, including current portion | Book Value | ||
| Financial Instruments | ||
| Long-term debt | 507,560 | 481,780 |
| Secured long-term debt, including current portion | Fair Value | ||
| Financial Instruments | ||
| Long-term debt | 507,560 | 481,780 |
| Unsecured long-term debt | Book Value | ||
| Financial Instruments | ||
| Long-term debt | 262,766 | 262,766 |
| Unsecured long-term debt | Fair Value | ||
| Financial Instruments | ||
| Long-term debt | $ 226,291 | $ 259,834 |
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- Definition Fair value portion 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of investment in marketable security, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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