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Fair Value Measurement - Company's available-for-sale (AFS) securities and other comprehensive income (OCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
OCI from AFS securities - debt securities:
Beginning balance	$ 177,907	$ 230,168	$ 181,651	$ 230,076
Reversal of losses from unrealized to realized	0	0	0	(65)
Unrealized holding losses on AFS securities	0	0	0	(251)
Change in OCI from AFS debt securities	0	0	0	(316)
Ending balance	175,618	220,607	175,618	220,607
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent
OCI from AFS securities - debt securities:
Beginning balance	0	0	0	316
Ending balance	$ 0	$ 0	$ 0	$ 0

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The amount of reversal of losses from unrealized to realized.

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Amount, after tax and reclassification adjustment, of gain (loss) in value of unsold investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), attributable to parent.

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Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.

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Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

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