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

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- Definition

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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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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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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Subordinated Notes (Details) - USD ($) $ in Thousands	12 Months Ended
Subordinated Notes (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2014	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Outstanding subordinated notes			$ 437,392	$ 436,938
Costs incurred in connection with the issuance of subordinated notes	$ 3,300	$ 1,300
4.85% subordinated notes maturing in June 2029
Debt Instrument [Line Items]
Proceeds, net of underwriting discount	296,700
5.00% subordinated notes maturing in June 2024
Debt Instrument [Line Items]
Proceeds, net of underwriting discount		139,100
Subordinated debt
Debt Instrument [Line Items]
Unamortized balances of costs for issuance of subordinated notes			$ 2,600
Subordinated debt \| 4.85% subordinated notes maturing in June 2029
Debt Instrument [Line Items]
Principal amount of debt	$ 300,000
Stated interest rate					4.85%
Subordinated debt \| 5.00% subordinated notes maturing in June 2024
Debt Instrument [Line Items]
Principal amount of debt		$ 140,000
Stated interest rate		5.00%