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LONG-TERM DEBT - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Debt Disclosure [Abstract]
Interest expense	$ 4	$ 13	$ 6	$ 20

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- References

No definition available.

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- Definition

The net amount of nonoperating interest income (expense).

+ References

No definition available.

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