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EMPLOYEE BENEFIT PLANS, Defined Contribution Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
EMPLOYEE BENEFIT PLANS [Abstract]
Employer contribution to 401 (k) defined contribution plan	$ 446	$ 433	$ 388

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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