LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Summary of unpaid principal balance of loans classified as TDRs (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) loan	Dec. 31, 2018 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Recorded Investment	$ 12,270	$ 17,835
Allowance for loan associated with TDR	(833)	(940)
Net recorded investment	$ 11,437	$ 16,895
Number of loans classified as TDRs | loan	4	2
Cash, Securities and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Recorded Investment	$ 2,803	$ 11,252
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Recorded Investment	9,467	6,583
Allowance for loan associated with TDR	(833)	(940)
Additional funds to loans classified as TDRs	200	0
Cash collateral received	$ 1,500
Number of loans classified as TDRs | loan	2
Nonperforming Loans Acrruing [Member] | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as TDRs	$ 5,055
Total Recorded Investment		4,848
Loans on nonaccrual status | Cash, Securities and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as TDRs	2,803
Total Recorded Investment		11,252
Loans on nonaccrual status | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as TDRs	$ 4,412
Total Recorded Investment		$ 1,735