LOANS - Collateral Dependent Loans (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($)
Financing Receivable, Recorded Investment [Line Items]
Amortized cost basis, collateral dependent loans	$ 5,329
Real Property
Financing Receivable, Recorded Investment [Line Items]
Amortized cost basis, collateral dependent loans	5,299
Equipment
Financing Receivable, Recorded Investment [Line Items]
Amortized cost basis, collateral dependent loans	28
Miscellaneous
Financing Receivable, Recorded Investment [Line Items]
Amortized cost basis, collateral dependent loans	2
Commercial financial and agriculture
Financing Receivable, Recorded Investment [Line Items]
Amortized cost basis, collateral dependent loans	28
Commercial financial and agriculture | Equipment
Financing Receivable, Recorded Investment [Line Items]
Amortized cost basis, collateral dependent loans	28
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Amortized cost basis, collateral dependent loans	2,986
Commercial real estate | Real Property
Financing Receivable, Recorded Investment [Line Items]
Amortized cost basis, collateral dependent loans	2,986
Consumer real estate
Financing Receivable, Recorded Investment [Line Items]
Amortized cost basis, collateral dependent loans	2,313
Consumer real estate | Real Property
Financing Receivable, Recorded Investment [Line Items]
Amortized cost basis, collateral dependent loans	2,313
Consumer installment
Financing Receivable, Recorded Investment [Line Items]
Amortized cost basis, collateral dependent loans	2
Consumer installment | Miscellaneous
Financing Receivable, Recorded Investment [Line Items]
Amortized cost basis, collateral dependent loans	$ 2