Borrowings - Notes payable -Parenthetical (Details) $ in Thousands	3 Months Ended
Mar. 31, 2023 USD ($)
Advances with FHLB with maturities ranging from 2023 Through 2029
Debt Instrument [Line Items]
Notes Payable Maturity Year Range Start	2023
Notes Payable Maturity Year	2029
Debt Instrument Frequency Of Periodic Payment	monthly
Advances with FHLB with maturities ranging from 2023 Through 2029 \| Minimum
Debt Instrument [Line Items]
Advances with the FHLB, interest rate	0.39%
Advances with FHLB with maturities ranging from 2023 Through 2029 \| Maximum
Debt Instrument [Line Items]
Advances with the FHLB, interest rate	3.18%
Unsecured senior debt \| Fixed Rate with maturities from 2023 to 2028 paying interest semiannually
Debt Instrument [Line Items]
Notes Payable Maturity Year Range Start	2023
Notes Payable Maturity Year	2028
Debt issuance costs	$ 7,481
Debt Instrument Frequency Of Periodic Payment	semiannually
Unsecured senior debt \| Fixed Rate with maturities from 2023 to 2028 paying interest semiannually \| Minimum
Debt Instrument [Line Items]
Fixed interest rate percentage	6.125%
Unsecured senior debt \| Fixed Rate with maturities from 2023 to 2028 paying interest semiannually \| Maximum
Debt Instrument [Line Items]
Fixed interest rate percentage	7.25%
Junior subordinated debt \| Fixed Rate with maturities on 2034
Debt Instrument [Line Items]
Notes Payable Maturity Year	2034
Debt issuance costs	$ 308
Junior subordinated debt \| Fixed Rate with maturities on 2034 \| Minimum
Debt Instrument [Line Items]
Fixed interest rate percentage	6.125%
Junior subordinated debt \| Fixed Rate with maturities on 2034 \| Maximum
Debt Instrument [Line Items]
Fixed interest rate percentage	6.564%

Latest year the outstanding debt instruments are required to be repaid.

No definition available.

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Earliest year the outstanding debt instruments are required to be repaid.

+ References

No definition available.

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Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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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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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

States the interest rate applicable to Federal Home Loan Bank advances outstanding as of the Balance Sheet date.

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