ALLOWANCE FOR CREDIT LOSSES - Bank's Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2021	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	$ 22,272	$ 24,200	$ 20,800
Changes due to adoption			4,215
Provision for Credit Losses	(1,423)	(3,452)	26
Charge-offs	(219)	(627)	(1,844)
Recoveries	355	864	1,003
Ending Balance	20,985	20,985	24,200
Residential Properties
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	7,236	5,115	8,423
Changes due to adoption			363
Provision for Credit Losses	(1,507)	614	(3,671)
Ending Balance	5,729	5,729	5,115
Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	5,485	8,711	4,166
Changes due to adoption			3,760
Provision for Credit Losses	(148)	(3,374)	785
Ending Balance	5,337	5,337	8,711
Land and Construction
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	1,984	892	573
Changes due to adoption			92
Provision for Credit Losses	(258)	834	227
Ending Balance	1,726	1,726	892
Commercial and Industrial Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	7,458	9,249	7,448
Provision for Credit Losses	492	(1,400)	2,642
Charge-offs	(219)	(627)	(1,844)
Recoveries	355	864	1,003
Ending Balance	8,086	8,086	9,249
Consumer Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	109	233	190
Provision for Credit Losses	(2)	(126)	43
Ending Balance	$ 107	$ 107	$ 233

Gross amount of provision for loan credit losses.

No definition available.

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

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- Definition

The effect of a change in method or methods for calculating the allowance for credit losses on the current period provision.

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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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Amount of increase in allowance for credit loss on financing receivable from recovery.

+ References

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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