Certificate of deposit penalty fees for withdrawals.

No definition available.

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- Definition

Estimated amount of relief fund.

+ References

No definition available.

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- Definition

Loans and leases receivable net reported forgiveness amount.

+ References

No definition available.

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- Definition

Number of customers.

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No definition available.

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- Definition

Number of designated derivative instrument.

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No definition available.

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- Definition

Offering unsecured personal loans, amount.

+ References

No definition available.

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- Definition

Offering unsecured personal loans, percentage.

+ References

No definition available.

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- Definition

Offering unsecured personal loans, period.

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No definition available.

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- Definition

Percentage of loans with active payment deferrals.

+ References

No definition available.

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- Definition

Significant Accounting Policies [Line Items]

+ References

No definition available.

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Balance Type:	na
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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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Data Type:	dtr-types:percentItemType
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Period Type:	duration

- Definition

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

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Balance Type:	credit
Period Type:	instant

- Definition

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

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- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands		4 Months Ended	9 Months Ended
	Mar. 27, 2020 USD ($)	Jul. 09, 2020 USD ($)	Sep. 30, 2021 USD ($) DerivativeInstrument	Dec. 31, 2020 USD ($) Customer	Dec. 27, 2020 USD ($)	Dec. 31, 2015 USD ($)
Significant Accounting Policies [Line Items]
Loans			$ 3,608,455	$ 3,542,718
Offering unsecured personal loans, percentage		2.95%
Subordinated Notes [Member]
Significant Accounting Policies [Line Items]
Number of designated derivative instrument \| DerivativeInstrument			1
Debt instrument issued amount						$ 40,000
Subordinated Notes [Member] \| LIBOR [Member]
Significant Accounting Policies [Line Items]
Debt instrument, fixed rate of interest						6.00%
Debt instrument, interest rate terms			three-month LIBOR plus 3.944%
Debt instrument, basis spread on variable rate			3.944%
Commercial Loan and Mortgage Loans [Member]
Significant Accounting Policies [Line Items]
Percentage of loans with active payment deferrals			2.00%
Residential Real Estate Loans and Lines [Member]
Significant Accounting Policies [Line Items]
Percentage of loans with active payment deferrals			1.00%
Maximum [Member]
Significant Accounting Policies [Line Items]
Certificate of deposit penalty fees for withdrawals		$ 20,000
Offering unsecured personal loans, amount		$ 5,000
Offering unsecured personal loans, period		60 months
Maximum [Member] \| Consumer Indirect [Member]
Significant Accounting Policies [Line Items]
Percentage of loans with active payment deferrals			1.00%
CARES Act [Member]
Significant Accounting Policies [Line Items]
Estimated amount of relief fund	$ 2,200,000,000
Paycheck Protection Program [Member]
Significant Accounting Policies [Line Items]
Loans			$ 121,400	253,100	$ 284,000,000
Loans forgiveness amount			239,000
Paycheck Protection Program [Member] \| Minimum [Member]
Significant Accounting Policies [Line Items]
Loans				$ 270,000
Number of customers \| Customer				1,700
New Paycheck Protection Program [Member]
Significant Accounting Policies [Line Items]
Loans			$ 107,000