EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Profit Sharing and Deferred Compensation Plans (Details)			12 Months Ended
	Dec. 31, 2020 shares	Jul. 01, 2020 USD ($)	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares
Defined Contribution Plan Disclosure [Line Items]
Matching contributions			$ 1,415,000	$ 1,299,000	$ 1,050,000
Employee Stock Ownership Plan (ESOP), Diversification Feature, Age Requirement			55
Deferred Compensation Arrangement with Individual, Requisite Service Period			10 years
Employee Stock Ownership Plan (ESOP), Diversification Feature Percentage			50.00%
Employee Stock Ownership Plan (ESOP), Policy Diversification Feature Term			6 years
Employee Stock Ownership Plan (ESOP), Shares Repurchased | shares			0	0
Employee Stock Ownership Plan (ESOP), Shares in ESOP, Total | shares	481,478		564,353	513,494	481,478
Employee Stock Ownership Plan (ESOP), Cash Contributions to ESOP			$ 1,170,000	$ 1,040,000	$ 912,000
Deferred Compensation, Monthly Payments To Be Made To Executives Or His Heirs		$ 1,000,000
Deferred Compensation Arrangement with Individual, Maximum Contractual Term		10 years
Deferred Compensation Arrangement with Individual, Recorded Liability		$ 499,000
Deferred Compensation Liability Discount Rate	1.50%	1.50%
Deferred Compensation Liability, Current and Noncurrent			892,000	878,000
Merger Related Expenses
Defined Contribution Plan Disclosure [Line Items]
Deferred Compensation Arrangement with Individual, Compensation Expense		$ 360,000
Pension And Other Employee Benefits Expenses
Defined Contribution Plan Disclosure [Line Items]
Deferred Compensation Arrangement with Individual, Compensation Expense			14,000	13,000	6,000
Officers Nonqualified Deferred Compensation Arrangement [Member]
Defined Contribution Plan Disclosure [Line Items]
Deferred Compensation Arrangement with Individual, Compensation Expense			$ 391,000	$ 301,000	$ 286,000