SIGNIFICANT ACCOUNTING POLICIES (Details - Rev, AR & Seg) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) segment	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance, beginning of the period	$ 1,059	$ 606	$ 349
Charges to earnings	195	515	337
Write off of uncollectible accounts receivable	(579)	(62)	(80)
Balance, end of the period	$ 675	$ 1,059	$ 606
Number of reportable segments | segment	1