INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Operating Loss Carryforwards [Line Items]
Valuation allowance	$ (22,570)	$ (16,868)
Valuation allowance related to NOL carryforwards	7,300
Contribution to Blue Foundry Charitable Foundation	0	9,000
Approximate amount of retained earnings for which no provision for income tax has been made	14,600	$ 14,600
Charitable Contribution
Operating Loss Carryforwards [Line Items]
Charitable contribution tax credit carryforward, term		5 years
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	25,800
State and Local Jurisdiction | New Jersey Division of Taxation
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 26,400
Expiration term on state operating loss carryforwards	19 years