INCOME TAXES FIN 48 accruals (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Gross unrecognized tax benefits excluding interest and penalties	$ 2,056	$ 2,039
Amount presented as a reduction to a deferred tax asset	521	438
Unrecognized tax benefits, excluding interest and penalties	1,535	1,601
Accrued interest and penalties	696	610
Total unrecognized tax benefits that would impact the effective tax rate	$ 2,231	$ 2,211