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STOCK INCENTIVE PLANS - Restricted Stock Units (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Apr. 02, 2024
Restricted Stock Unit Transactions - Shares
Nonvested, beginning balance (in shares)	146,835	160,000
Granted (in shares)	118,493	18,835
Vested (in shares)	(50,835)	(32,000)
Nonvested, ending balance (in shares)	214,493	146,835	160,000
Restricted Stock Unit Transactions - Weighted average grant date fair value
Nonvested, beginning balance (in dollar per share)	$ 33.98	$ 29.95
Granted (in dollar per share)	45.99	33.98
Vested (in dollar per share)	(31.44)	(29.95)
Nonvested, ending balance (in dollar per share)	$ 38.81	$ 33.98	$ 29.95
Vested shares include shares vested	7,680
Restricted share unit activity - Additional data
Total compensation cost, net of estimated forfeitures, related to non-vested restricted stock unit awards not yet recognized, pre-tax	$ 3,973	$ 3,154	$ 4,392
Weighted average period in years over which restricted stock unit cost is expected to be recognized (in years)	1 year 7 months 6 days	3 years 2 months 12 days	4 years 2 months 12 days
Total grant date fair value of shares of common stock vested during the year	$ 1,598	$ 958
Stock Repurchase Program
Amount authorized for purchase of share	$ 2,900			$ 25,000
Repurchase price per share	$ 58.58
Equity Incentive Plan 2016
Restricted Stock Unit Transactions - Shares
Number of shares of common stock are available for issuance	800,000
Equity Incentive Plan 2016 \| Minimum \| Executive Officer
Restricted Stock Unit Transactions - Shares
Vesting period of options	3 years
Equity Incentive Plan 2016 \| Maximum \| Executive Officer
Restricted Stock Unit Transactions - Shares
Vesting period of options	5 years
Non Employee Director Stock Plan 2023
Restricted Stock Unit Transactions - Shares
Number of shares of common stock are available for issuance	125,000
Non Employee Director Stock Plan 2023 \| Director
Restricted Stock Unit Transactions - Shares
Vesting period of options	1 year