FAIR VALUE - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Additional provision for loan losses	$ 1,500	$ 1,000	$ 11,000	$ 5,100
Assets measured at fair value on non-recurring basis
Outstanding balance of impaired loans with an allowance recorded					$ 11,657
Valuation allowance on impaired loans					4,676
Loans held for sale					12,600
Other Real Estate	0		0		0
Non-recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Additional provision for loan losses			2,600
Assets measured at fair value on non-recurring basis
Outstanding balance of impaired loans with an allowance recorded	14,000		14,000		11,700
Valuation allowance on impaired loans	7,000		7,000		4,700
Carrying Amount
Assets measured at fair value on non-recurring basis
Loans held for sale	10,000	$ 12,600	10,000	$ 12,600	12,643
Carrying Amount | Non-recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying amount of impaired loans					6,981
Individually evaluated commercial and industrial loans	6,954		6,954
Assets measured at fair value on non-recurring basis
Valuation allowance on impaired loans	2,600		2,600		0
Loans held for sale	$ 10,000		$ 10,000		$ 12,643