INTERIM STATEMENT PRESENTATION, Liquidity and Capital Resources (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Liquidity and Capital Resources [Abstract]
Cash and cash equivalents	$ 5,840	$ 6,713	$ 5,245	$ 7,087
Working capital, net of deferred commission expense and deferred revenue	1,354
Net loss	(2,069)	(2,131)	$ (4,539)
Cash used in operations	(520)	$ 744
Line of credit, amount outstanding	4,800
Line of credit, amount available	$ 1,200
Maturity date	Jun. 29, 2018