EARNINGS PER SHARE - Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
EARNINGS PER SHARE
Average common shares outstanding (in shares)	11,767	12,201
Net income	$ 13,407	$ 20,456
Per common share amount	$ 1.14	$ 1.68
Average common shares outstanding (in shares)	11,767	12,201
Net effect of dilutive stock options - based on the treasury stock method using average market price (in shares)	55	70
Diluted common shares (in shares)	11,822	12,271
Net income	$ 13,407	$ 20,456
Per common share amount	$ 1.13	$ 1.67