IMPAIRMENT OF LONG LIVED ASSETS AND GOODWILL (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Goodwill
Non-cash impairment charges	$ 11,076	$ 11,076
Goodwill balance	40,865	40,865	$ 45,077
U.S. Telecom
Goodwill
Goodwill balance	32,148	$ 32,148	$ 39,639
U.S. Wireless
Goodwill
Impairment of long-lived assets	11,100
Goodwill impairment	$ 7,500