ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Other Long Term Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Operating Lease, Liability, Noncurrent	$ 2,242	$ 2,582
Accrued lease restoration costs	351	369
Supplemental Unemployment Benefits, Severance Benefits	793	822
Defined benefit plan obligation	192	213
Other long-term liabilities	$ 3,578	$ 3,986