EMPLOYEE BENEFIT PLANS - Defined Benefit Pension Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Central States, Southeast and Southwest Areas Pension Fund
Multiemployer Plans [Line Items]
Contributions of Balchem Corporation	$ 816	$ 774	$ 677