SHAREHOLDERS' EQUITY - RSU Vested Period (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Stockholders' Equity Note [Abstract]
Other current liabilities	$ 437	$ 811
Other long-term liabilities	477	913
Total	$ 914	$ 1,724

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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