LONG-TERM DEBT (Details) (USD $)			6 Months Ended								0 Months Ended		6 Months Ended							6 Months Ended												6 Months Ended					6 Months Ended			0 Months Ended	1 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Bermuda wireless operations	Jun. 30, 2013 Amended Credit Facility	Jun. 30, 2013 Amended Credit Facility One-week LIBOR	Jun. 30, 2013 Amended Credit Facility One-month LIBOR	Jun. 30, 2013 Amended Credit Facility Prime Rate	Jun. 30, 2013 Amended Credit Facility Maximum	Jun. 30, 2013 Term loans	Dec. 31, 2012 Term loans	May 18, 2012 Term loans Amended Credit Facility item	Jun. 30, 2013 Term Loan A-1 Amended Credit Facility	Jun. 30, 2013 Term Loan A-1 Amended Credit Facility LIBOR	Jun. 30, 2013 Term Loan A-1 Amended Credit Facility Base rate	Jun. 30, 2013 Term Loan A-1 Amended Credit Facility Minimum LIBOR	Jun. 30, 2013 Term Loan A-1 Amended Credit Facility Minimum Base rate	Jun. 30, 2013 Term Loan A-1 Amended Credit Facility Maximum LIBOR	Jun. 30, 2013 Term Loan A-1 Amended Credit Facility Maximum Base rate	Jun. 30, 2013 Term Loan A-2 Amended Credit Facility	Jun. 30, 2013 Term Loan A-2 Amended Credit Facility LIBOR	Jun. 30, 2013 Term Loan A-2 Amended Credit Facility Base rate	Jun. 30, 2013 Term Loan A-2 Amended Credit Facility Minimum LIBOR	Jun. 30, 2013 Term Loan A-2 Amended Credit Facility Minimum Base rate	Jun. 30, 2013 Term Loan A-2 Amended Credit Facility Maximum LIBOR	Jun. 30, 2013 Term Loan A-2 Amended Credit Facility Maximum Base rate	Jun. 30, 2013 Revolver loan Minimum LIBOR	Jun. 30, 2013 Revolver loan Minimum Base rate	Jun. 30, 2013 Revolver loan Maximum LIBOR	Jun. 30, 2013 Revolver loan Maximum Base rate	Jun. 30, 2013 Revolver loan Amended Credit Facility	May 18, 2012 Revolver loan Amended Credit Facility	Jun. 30, 2013 Revolver loan Amended Credit Facility LIBOR	Jun. 30, 2013 Revolver loan Amended Credit Facility Base rate	Jun. 30, 2013 Revolver loan Amended Credit Facility Minimum	Jun. 30, 2013 Revolver loan Amended Credit Facility Maximum	May 18, 2012 Swingline sub-facility Amended Credit Facility	Jun. 30, 2013 Swingline sub-facility Amended Credit Facility Base rate	Jun. 30, 2013 Swingline sub-facility Amended Credit Facility Minimum Base rate	Jun. 30, 2013 Swingline sub-facility Amended Credit Facility Maximum Base rate	Jun. 17, 2013 Letter of credit sub-facility Amended Credit Facility	Oct. 31, 2012 Letter of credit sub-facility Amended Credit Facility	Jun. 30, 2013 Letter of credit sub-facility Amended Credit Facility	Oct. 29, 2012 Letter of credit sub-facility Amended Credit Facility	Jun. 30, 2013 Note Payable - Other	Dec. 31, 2012 Note Payable - Other	Jun. 30, 2013 Note Payable - Other M3 Wireless, Ltd. Keytech Ltd.
Long-term debt
Outstanding debt	$ 268,216,000	$ 272,072,000							$ 264,500,000	$ 268,000,000		$ 125,000,000							$ 150,000,000																									$ 3,716,000	$ 4,072,000	$ 3,700,000
Less: current portion	(19,600,000)	(15,680,000)
Total long-term debt	248,616,000	256,392,000
Less: debt discount	(4,984,000)	(5,492,000)
Net carrying amount	243,632,000	250,900,000
Maximum borrowing capacity											275,000,000																				100,000,000					10,000,000				55,000,000			55,000,000
Number of term loans											2
Outstanding letters of credit																																										29,900,000
Draw downs against issued letters of credit																																										0
Maximum aggregate additional borrowings subject to lender approval											100,000,000
Description of variable rate basis					one-week LIBOR	one-month LIBOR	Prime Rate						LIBOR	Base Rate						LIBOR	Base Rate											LIBOR	Base Rate				Base Rate
Basis spread on variable rate (as a percent)					1.50%	1.50%									2.00%	1.00%	3.50%	2.50%				2.50%	1.50%	4.00%	3.00%	2.00%	1.00%	3.50%	2.50%									0.50%	2.00%
Percentage of equity interests in certain domestic subsidiaries pledged				100.00%				65.00%
Weighted-average interest rate (as a percent)				4.39%
Availability under the facility																														70,100,000
Commitment fee (as a percent)																																		0.25%	0.50%					1.75%	1.75%
Term loan assumed																																														$ 7,000,000
Ownership interest held by minority shareholder (as a percent)			42.00%
Effective interest rate (as a percent)																																														7.00%