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INCOME TAXES - Unrecognized Tax Benefits (Details) - 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 benefits at January 1	$ 467	$ 304	$ 460
Increase in gross amounts of tax positions related to prior years	26	533	0
Decrease in gross amounts of tax positions related to prior years	0	(370)	(156)
Decrease due to settlement with taxing authority	(185)	0	0
Increase in gross amounts of tax positions related to current year	0	0	0
Decrease due to lapse in statute of limitations	(70)	0	0
Unrecognized tax benefits at December 31	$ 238	$ 467	$ 304

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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.

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Amount of unrecognized tax benefits.

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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 decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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