INCOME TAXES, UNRECOGNIZED TAX BENEFITS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
INCOME TAXES [Abstract]
Uncertain income tax positions recorded in current liabilities	$ 100
Uncertain income tax positions recorded in noncurrent liabilities	700	$ 800
Unrecognized tax benefits that would impact effective tax rate	600
Reconciliation of beginning and ending amount of unrecognized tax benefits [Roll Forward]
Balance as of January 1	803	738
Additions for tax positions related to the current year	0	1
Additions for tax positions of prior years	0	111
Reductions of tax positions of prior years	(71)	(47)
Settlements	(17)	0
Balance as of December 31	715	803
Accrued Penalties and Interest [Abstract]
Accrued interest and penalties in the consolidated balance sheets	200	100
Accrued interest and penalties in the consolidated statement of operations	26	$ 56
Decrease in unrecognized tax benefits due to the lapse of statutes of limitations	$ 100