Borrowings - Narrative (Details) - Subordinated notes, 5.75% - USD ($) $ in Millions	Aug. 05, 2014	Mar. 31, 2023	Dec. 31, 2022
Line of Credit Facility [Line Items]
Face amount	$ 70.0
Interest rate (as a percent)		5.75%	5.75%
Net proceeds from issuance of subordinated long-term debt	68.8
Payments of debt issuance costs	$ 1.2

Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash inflow from a borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in liquidation of the entity's assets or underlying collateral.

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