Borrowings - Repurchase agreements accounted for as secured borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase liability	$ 57,268	$ 54,833
Secured Debt
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase liability	57,268	54,833
Secured Debt \| US Treasury Securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase liability	46,205	36,404
Secured Debt \| US Treasury Securities \| Within 30 days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase liability	27,378	22,591
Secured Debt \| US Treasury Securities \| After 30 to 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase liability	18,827	13,813
Secured Debt \| Mortgage Backed Securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase liability	11,063	18,429
Secured Debt \| Mortgage Backed Securities \| Within 30 days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase liability	4,609	4,924
Secured Debt \| Mortgage Backed Securities \| After 30 to 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase liability	$ 6,454	$ 13,505

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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+ Details