SECURITIES (Schedule of financing receivable credit quality indicators) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost	$ 838,241	$ 829,403
Obligations of states and political subdivisions
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost	838,241	829,403
Standard & Poor's, AAA Rating | Obligations of states and political subdivisions
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost	88,550	79,598
Standard & Poor's, AA, AA+, AA- | Obligations of states and political subdivisions
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost	583,816	588,354
Standard & Poor's, A+, A, A- Rating | Obligations of states and political subdivisions
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost	139,658	136,624
Standard & Poor's, BBB Rating | Obligations of states and political subdivisions
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost	20,133	20,623
Standard & Poor's, Not Rated | Obligations of states and political subdivisions
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost	$ 6,084	$ 4,204