PRINCIPAL CLIENTS (Major Customer) (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended		3 Months Ended
	Jul. 28, 2011	Jul. 25, 2011	Mar. 31, 2013		Mar. 31, 2012
AT&T Services, Inc. and AT&T Mobility, LLC, subsidiaries of AT&T Inc. [Member]
Revenue, Major Customers [Line Items]
Revenue			$ 13,303	[1]	$ 19,415	[1]
Revenue concentration, percentage			24.70%	[1]	38.20%	[1]
T-Mobile USA, Inc., a subsidiary of Deutsche Telekom [Member]
Revenue, Major Customers [Line Items]
Revenue			13,334	[2]	14,627	[2]
Revenue concentration, percentage			24.80%	[2]	28.80%	[2]
Initial term of the Master Service Agreement	5 years
Master Services Agreement renewal term			1 year
Notice of termination option of the initial term		90 days
Comcast Cable Communications Management LLC, subsidiary of Comcast Corporation [Member]
Revenue, Major Customers [Line Items]
Revenue			$ 11,357	[2]
Revenue concentration, percentage			21.10%	[2]
Initial term of the Master Service Agreement		3 years
Notice of termination option of the initial term		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.