ACQUISITION OF BUSINESS (Schedule of assets acquired and liabilities assumed) (Details) - USD ($) $ in Thousands	1 Months Ended
	Mar. 17, 2016	Mar. 31, 2016	Dec. 31, 2015
Current liabilities:
Goodwill		$ 47,485	$ 32,304
Broadsmart [Member]
Current assets:
Accounts receivable	$ 567
Inventories	302
Deposits and other current assets	143
Total current assets	1,012
Property and equipment	355
Intangible assets	26,385
Deposits and other non-current assets	96
Total assets acquired	27,848
Current liabilities:
Accrued expenses and other current liabilities	900
Deferred revenue	172
Total current liabilities	1,072
Other non-current liabilities	62
Total liabilities assumed	1,134
Net identifiable assets acquired	26,714
Goodwill	15,181
Total purchase price	$ 41,895