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Loans and the Allowance for Credit Losses (Details) $ in Thousands		9 Months Ended		12 Months Ended
	Jan. 02, 2021 USD ($)	Sep. 30, 2021 USD ($) Loans	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) Loans
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
PPP Loans		$ 177,800		$ 397,500
Non Accrual Contractual Due		90 days
Loans Pledged as Collateral		$ 2,600,000		2,600,000
Provision for credit losses	$ 6,600
Loans performing under the restructured terms		41,200		23,700
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans		38,500		25,700
Troubled debt restructurings		79,700		$ 49,400
Specific allowance of TDR's		$ 10,500	$ 4,400
Number of deferred loans | Loans		10		113
Deferred loan		$ 10,297		$ 207,000
Special Mention [Member]
LOANS AND THE ALLOWANCE FOR LOAN LOSSES (Details) [Line Items]
Deferred loan		$ 5,500

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- Definition

Provision for loan losses associated with impacts of the COVID-19 pandemic.

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Amount of deferred loan.

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Loans and the allowance for loan losses details line items.

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Loans performing under the restructured terms

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Non accrual contractual due.

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Number of deferred loans.

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Paycheck protection program loans.

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Specific allowance of TDR's.

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- Definition

Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
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Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 30
-Section 45
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For a debtor, the gain (loss) recognized on the transfer of assets, after the impact of income tax expense or benefit, arising from the difference between the book value of the assets transferred before the restructuring and the fair value of the assets transferred.

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