Financial instruments and fair value measurements - Maturities of fixed maturity available-for-sale securities (Details) $ in Thousands |
6 Months Ended | 12 Months Ended |
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Jun. 30, 2026
USD ($)
item
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Dec. 31, 2025
USD ($)
item
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| Financial instruments and fair value measurements | ||
| Less than one year | $ 70,070 | $ 55,261 |
| One to five years | 77,477 | |
| Debt securities | $ 147,547 | $ 55,261 |
| Number of available-for-sale investment debt securities | item | 152 | 17 |
| Amount of accrued interest receivable on available-for-sale investment debt securities | $ 1,478 | $ 393 |
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Net increase or decrease in the carrying amount of the debt instrument for the period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount excluding accrued interest, 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 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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- References No definition available.
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