INCOME TAXES (Changes in Unrecognized Income Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
INCOME TAXES [Abstract]
Unrecognized tax benefits as of January 1	$ 11,643	$ 10,828	$ 8,447
Increases for tax positions related to Prior years	0	27	1,368
Increases for tax positions related to Current year	698	1,039	1,040
Decreases for tax positions related to Prior years	(655)	(204)	0
Settlements with taxing authorities	0	0	0
Expiration of applicable statute of limitations	(8,025)	(47)	(27)
Unrecognized tax benefits as of December 31	$ 3,661	$ 11,643	$ 10,828

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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 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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