PER SHARE DATA (Details) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Aug. 27, 2015
Earnings Per Share [Abstract]
Weighted average common shares issued (in shares)	7,622,675	7,559,306	7,542,043
Average treasury stock shares (in shares)	(510,225)	(499,869)	(480,225)
Weighted average common shares outstanding, basic (in shares)	7,112,450	7,059,437	7,061,818
Dilutive effect of outstanding stock options (in shares)	0	0	0
Weighted average common shares outstanding, diluted (in shares)	7,112,450	7,059,437	7,061,818
Options outstanding (in shares)	1,000,000	914,000	1,034,525	3,000
Share price (in dollars per share)	$ 25.55	$ 25.34	$ 27.23