Investments (Narrative) (Details) $ in Thousands |
3 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2026
USD ($)
security
item
|
Dec. 31, 2025
USD ($)
security
|
Mar. 31, 2025
USD ($)
|
|
| Schedule of Available-for-sale Securities [Line Items] | |||
| Fair value | $ 436,483 | $ 454,586 | |
| Number of investments in a single issuer exceeds 10% of shareholders' equity | item | 0 | ||
| Percent of shareholders equity benchmark for investments in a single issuer | 10.00% | ||
| Fair Value | $ 393,917 | 398,977 | |
| Unrealized Losses | $ 29,350 | $ 27,509 | $ 1,800 |
| Number of debt securities | security | 464 | 466 | |
| Public Funds And Trust Deposits [Member] | |||
| Schedule of Available-for-sale Securities [Line Items] | |||
| Fair value | $ 343,400 | $ 353,500 |
| X | ||||||||||
- Definition Number Of Investments In A Single Issuer Exceeding Benchmark No definition available.
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- Definition Percent Of Shareholders Equity Benchmark For Investments In Single Issuers No definition available.
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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| X | ||||||||||
- 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/disclosureRef
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- Details
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