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INCOME TAXES (Details - Unrecognized tax benefit) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefit, Balance at beginning of year	$ 4,629	$ 3,615	$ 3,861
Decrease related to prior year tax positions	(34)
Increases related to prior year tax positions		896	1
Increases related to current year tax positions	119	111	0
Expiration of the statute of limitations for the assessment of taxes	(393)	0	0
Increase (decrease) related to change in rate	(1)	7	(247)
Unrecognized tax benefit, Balance at end of year	$ 4,320	$ 4,629	$ 3,615

X

- Definition

Unrecognized Tax Benefits, Increase (Decrease) Change in Enacted Tax Rate

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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