ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Schedule of Amounts Reclassified from AOCI) (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for federal income taxes		$ (370)	$ (760)	$ (561)	$ (931)	$ (675)	$ (533)	$ (719)	$ (358)	$ (2,620)	$ (2,285)
Reclassifications for the period		$ 2,721	$ 4,139	$ 3,551	$ 4,504	$ 3,600	$ 2,935	$ 3,599	$ 2,165	14,916	12,299
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications for the period	[1]									577	639
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gain (Losses) on Securities AFS [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gains on sale of debt securities, net	[1]									730	809
Provision for federal income taxes	[1]									(153)	(170)
Reclassifications for the period	[1]									$ 577	$ 639

[1] Amounts in parentheses indicate debits.