Borrowings - Notes payable -Parenthetical (Details) $ in Thousands	9 Months Ended
Sep. 30, 2019 USD ($)
Advances with FHLB with maturities ranging from 2019 Through 2029
Debt Instrument
Advances with the FHLB, earliest maturity	2019
Advances with the FHLB, latest maturity	2029
Debt Instrument Frequency Of Periodic Payment	monthly
Advances with FHLB with maturities ranging from 2019 Through 2029 \| Minimum
Debt Instrument
Advances with the FHLB, interest rate	1.04%
Advances with FHLB with maturities ranging from 2019 Through 2029 \| Maximum
Debt Instrument
Advances with the FHLB, interest rate	4.19%
Advances with the FHLB paying interest monthly at a floating rate
Debt Instrument
Debt Instrument Frequency Of Periodic Payment	monthly
Floating rate over the 3 month LIBOR with maturities on 2019
Debt Instrument
Advances with the FHLB, maturity	2019
Debt Instrument Frequency Of Periodic Payment	quarterly
Floating rate over the 3 month LIBOR with maturities on 2019 \| LIBOR
Debt Instrument
Variable rate basis	3 month LIBOR
Variable rate	0.24%
Fixed Rate with maturities on 2023 paying interest semiannually \| Unsecured senior debt
Debt Instrument
Advances with the FHLB, maturity	2023
Fixed interest rate percentage	6.125%
Debt issuance costs	$ 5,010
Debt Instrument Frequency Of Periodic Payment	semiannually
Fixed Rate with maturities ranging from 2033 to 2034 \| Junior subordinated debt
Debt Instrument
Notes Payable Maturity Year Range Start	2033
Notes Payable Maturity Year Range End	2034
Debt issuance costs	$ 402
Fixed Rate with maturities ranging from 2033 to 2034 \| Minimum \| Junior subordinated debt
Debt Instrument
Fixed interest rate percentage	6.125%
Fixed Rate with maturities ranging from 2033 to 2034 \| Maximum \| Junior subordinated debt
Debt Instrument
Fixed interest rate percentage	6.70%

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

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

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

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
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
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-Topic 942
-SubTopic 470
-Section 50
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- Definition

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

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- Definition

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
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- Definition

The year of maturity, when only one maturity date applies, for the advances from the Federal Home Loan Bank as of the Balance Sheet date.

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-Publisher FASB
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-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
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- Definition

The earliest year of maturity for the advances from the Federal Home Loan Bank as of the Balance Sheet date.

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The last year of maturity for the advances from the Federal Home Loan Bank as of the Balance Sheet date.

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

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