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STOCKHOLDERS' EQUITY - Stock Based Compensation - Shares subject to awards outstanding (Details) - USD ($)		12 Months Ended
	Jan. 12, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restricted stock
STOCKHOLDERS' EQUITY
Number of shares awarded		152,955	153,575	151,500
Vesting period		5 years
RSUs
STOCKHOLDERS' EQUITY
Number of shares awarded		85,250	85,350	80,700
Vesting period		3 years	3 years	3 years	3 years	3 years
2022 Incentive Plan
STOCKHOLDERS' EQUITY
Maximum number of shares authorized for issuance		750,000
Number of shares awarded	151,180
Value of shares awarded	$ 3,265,000
2022 Incentive Plan \| Restricted stock and RSU grants
STOCKHOLDERS' EQUITY
Shares subject to awards outstanding		317,825
2022 Incentive Plan \| Restricted stock
STOCKHOLDERS' EQUITY
Shares subject to awards outstanding		149,335
2022 Incentive Plan \| RSUs
STOCKHOLDERS' EQUITY
Shares subject to awards outstanding		168,490
2019 Incentive Plan
STOCKHOLDERS' EQUITY
Maximum number of shares authorized for issuance		750,000
Remaining shares which may be granted under the Plan		0
2019 Incentive Plan \| Restricted stock and RSU grants
STOCKHOLDERS' EQUITY
Shares subject to awards outstanding		506,247
2019 Incentive Plan \| Restricted stock
STOCKHOLDERS' EQUITY
Shares subject to awards outstanding		426,625
2019 Incentive Plan \| RSUs
STOCKHOLDERS' EQUITY
Shares subject to awards outstanding		79,622
2016 Incentive Plan
STOCKHOLDERS' EQUITY
Maximum number of shares authorized for issuance		750,000
2016 Incentive Plan \| Restricted stock and RSU grants
STOCKHOLDERS' EQUITY
Shares subject to awards outstanding		136,600
Remaining shares which may be granted under the Plan		0
2016 Incentive Plan \| Restricted stock
STOCKHOLDERS' EQUITY
Shares subject to awards outstanding		136,600