PRINCIPAL CLIENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				0 Months Ended	3 Months Ended				0 Months Ended	3 Months Ended
	Mar. 31, 2014 AT&T Services, Inc. and AT&T Mobility, LLC, subsidiaries of AT&T Inc. [Member]		Mar. 31, 2013 AT&T Services, Inc. and AT&T Mobility, LLC, subsidiaries of AT&T Inc. [Member]		Jul. 28, 2011 T-Mobile USA, Inc., a subsidiary of Deutsche Telekom [Member]	Mar. 31, 2014 T-Mobile USA, Inc., a subsidiary of Deutsche Telekom [Member]		Mar. 31, 2013 T-Mobile USA, Inc., a subsidiary of Deutsche Telekom [Member]		Jan. 04, 2014 Comcast Cable Communications Management LLC, subsidiary of Comcast Corporation [Member]	Mar. 31, 2014 Comcast Cable Communications Management LLC, subsidiary of Comcast Corporation [Member]		Mar. 31, 2013 Comcast Cable Communications Management LLC, subsidiary of Comcast Corporation [Member]
Revenue, Major Customers [Line Items]
Revenue	$ 15,344	[1]	$ 13,303	[1]		$ 18,639	[2]	$ 13,334	[2]		$ 10,959	[2]	$ 11,357	[2]
Revenue concentration, percentage	24.30%	[1]	24.70%	[1]		29.50%	[2]	24.80%	[2]		17.30%	[2]	21.10%	[2]
Initial term of the Master Service Agreement					5 years					1 year
Master Services Agreement Renewal Term					1 year					1 year
Notice of termination option of the initial term					90 days					90 days

[1] Revenue from this customer is generated through our Domestic and Asia Pacific segments.

[2] Revenue from this customer is generated through our Domestic, Asia Pacific and Latin America segments.