FAIR VALUE MEASUREMENTS (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial Assets:
Deferred compensation assets	$ 371	$ 522
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets:
Deferred compensation assets	97	282
Significant Other Observable Inputs (Level 2)
Financial Assets:
Deferred compensation assets	274	240
Significant Unobservable Inputs (Level 3)
Financial Assets:
Deferred compensation assets	$ 0	$ 0