ACCOUNTS RECEIVABLE (SCHEDULE OF CHANGE IN ALLOWANCE) (DETAILS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS [Abstract]
Balance, beginning of year	$ 3,425	$ 3,815	$ 3,635
Provision for doubtful accounts	1,465	633	695
Uncollectible receivables written-off	(2,035)	(681)	(315)
Effect of foreign currency	(679)	(342)	(200)
Balance, end of year	$ 2,176	$ 3,425	$ 3,815