EARNINGS PER COMMON SHARE - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Basic earnings per common share computation:
Net income per condensed consolidated statements of income	$ 11,525	$ 15,414
Net earnings allocated to participating securities	(92)	(78)
Net earnings allocated to common stock	$ 11,433	$ 15,336
Weighted average common shares outstanding, including shares considered participating securities (in shares)	20,979,000	21,143,000
Less: Average participating securities (in shares)	(155,000)	(100,000)
Weighted average shares (in shares)	20,823,766	21,042,579
Basic earnings per common share (in dollar per share)	$ 0.55	$ 0.73
Diluted earnings per common share computation:
Net earnings allocated to common stock	$ 11,433	$ 15,336
Weighted average common shares outstanding for basic earnings per common share (in shares)	20,823,766	21,042,579
Add: Dilutive effects of stock compensation (in shares)	63,000	35,000
Weighted average shares and dilutive potential common shares (in shares)	20,887,088	21,077,531
Diluted earnings per common share (in dollar per share)	$ 0.55	$ 0.73
Distributed earnings allocated to common stock
Basic earnings per common share computation:
Net earnings allocated to common stock	$ 3,646	$ 3,673
Undistributed earnings allocated to common stock
Basic earnings per common share computation:
Net earnings allocated to common stock	$ 7,787	$ 11,663