STOCK-BASED COMPENSATION PLANS - Restricted Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
STOCK-BASED COMPENSATION
Shares of common stock available for grant under stock incentive plans	745,260
Additional disclosures
Stock based compensation expense, net of forfeitures	$ 5,477	$ 5,073	$ 4,161
Restricted Stock
STOCK-BASED COMPENSATION
Restricted stock grants	129,328	182,497	109,462
Weighted average grant date fair value (in dollars per share)	$ 40.85	$ 33.21	$ 32.06
Service period over which value of the shares is amortized to compensation expense	3 years
Number of Non-vested Restricted Shares
Outstanding at beginning of period (in shares)	304,947	293,577	357,342
Awarded (in shares)	129,328	182,497	109,462
Vested (in shares)	(154,208)	(156,847)	(162,419)
Forfeited (in shares)	(25,957)	(14,280)	(10,808)
Outstanding at end of period (in shares)	254,110	304,947	293,577
Additional disclosures
Stock based compensation expense, net of forfeitures	$ 5,477	$ 5,073	$ 4,161
Unrecognized compensation expense	6,876
Unrecognized compensation expense, expected to be recognized in next fiscal year	$ 4,890
Restricted Stock | Minimum
STOCK-BASED COMPENSATION
Service period of earned grants	3 years
Restricted Stock | Maximum
STOCK-BASED COMPENSATION
Service period of earned grants	5 years
Restricted Stock | Performance based vesting
STOCK-BASED COMPENSATION
Restricted stock grants	74,495	111,251	63,432
Number of Non-vested Restricted Shares
Awarded (in shares)	74,495	111,251	63,432