INCOME TAXES (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
INCOME TAXES
Deferred tax assets, net of valuation allowance	$ 6,266
Net operating loss (NOL) carryforwards	7,600
Tax credit carryforwards	$ 1,700
Expiration period from date of origination for net operating loss carryforwards	20 years
Annual limitation for usage of NOL	$ 1,404
Annual limitation for usage of tax credits	476
Deferred tax expense (benefit)	$ 2,681	$ 1,481