INCOME TAXES - Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Federal income tax provision (benefit) at statutory rate (as a percent)		34.00%	34.00%
Tax act expense		$ 169
GILTI tax rate (as a percent)		10.50%
Income (loss) before income tax provision (benefit):
Domestic		$ 1,071	$ 1,903
Foreign		1,063	984
Income before income tax expense		2,134	2,887
Current
Federal		360	427
State		69	11
Foreign		263	231
Total current		692	669
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal		157	(429)
State		30	(216)
Foreign		(5)	(30)
Total deferred		182	(675)
Total income tax provision (benefit)		$ 874	$ (6)
Forecast
Federal income tax provision (benefit) at statutory rate (as a percent)	21.00%
Maximum
Federal income tax provision (benefit) at statutory rate (as a percent)		35.00%