SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Receivables (Details) - Printronix - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Industrial operations
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for doubtful accounts and sales returns	$ 66	$ 56
Energy operations
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for doubtful accounts and sales returns	$ 100	$ 0