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LONG-TERM DEBT (Details) (USD $)		1 Months Ended	12 Months Ended	0 Months Ended	9 Months Ended	0 Months Ended	9 Months Ended		12 Months Ended			0 Months Ended	9 Months Ended		0 Months Ended				12 Months Ended					12 Months Ended					12 Months Ended				0 Months Ended
	Dec. 31, 2012	May 31, 2011 Bermuda wireless operations	Dec. 31, 2013 Bermuda wireless operations	Sep. 20, 2013 Amended Credit Facility One-week LIBOR	Sep. 20, 2013 Amended Credit Facility One-week LIBOR	Sep. 20, 2013 Amended Credit Facility One-month LIBOR	Sep. 20, 2013 Amended Credit Facility One-month LIBOR	Sep. 20, 2013 Amended Credit Facility Prime Rate	Dec. 31, 2013 Term loans	Sep. 20, 2013 Term loans item	Dec. 31, 2012 Term loans	May 18, 2012 Term loans Amended Credit Facility item	Sep. 20, 2013 Term loans Amended Credit Facility LIBOR	Sep. 20, 2013 Term loans Amended Credit Facility Base rate	Sep. 20, 2013 Term loans Amended Credit Facility Minimum LIBOR	Sep. 20, 2013 Term loans Amended Credit Facility Minimum Base rate	Sep. 20, 2013 Term loans Amended Credit Facility Maximum LIBOR	Sep. 20, 2013 Term loans Amended Credit Facility Maximum Base rate	Dec. 31, 2013 Revolver loan Minimum LIBOR	Dec. 31, 2013 Revolver loan Minimum Base rate	Dec. 31, 2013 Revolver loan Maximum LIBOR	Dec. 31, 2013 Revolver loan Maximum Base rate	May 18, 2012 Revolver loan Amended Credit Facility	Dec. 31, 2013 Revolver loan Amended Credit Facility LIBOR	Dec. 31, 2013 Revolver loan Amended Credit Facility Base rate	Dec. 31, 2013 Revolver loan Amended Credit Facility Minimum	Dec. 31, 2013 Revolver loan Amended Credit Facility Maximum	May 18, 2012 Swingline sub-facility Amended Credit Facility	Dec. 31, 2013 Swingline sub-facility Amended Credit Facility Base rate	Dec. 31, 2013 Swingline sub-facility Amended Credit Facility Minimum Base rate	Dec. 31, 2013 Swingline sub-facility Amended Credit Facility Maximum Base rate	Jun. 30, 2013 Letter of credit sub-facility	Nov. 14, 2013 Letter of credit sub-facility Alltel Mobility Funds	Jun. 17, 2013 Letter of credit sub-facility Amended Credit Facility	Dec. 31, 2013 Letter of credit sub-facility Amended Credit Facility	Dec. 31, 2012 Note payable - other	May 02, 2011 Note payable - other M3 Wireless, Ltd. Keytech Ltd.
Long-term debt
Outstanding debt	$ 272,072,000										$ 268,000,000																									$ 4,072,000
Less: current portion	(15,680,000)
Total long-term debt	256,392,000
Less: debt discount	(5,492,000)
Net carrying amount	250,900,000
Maximum borrowing capacity												275,000,000											100,000,000					10,000,000							55,000,000
Outstanding letters of credit																																29,800,000		29,800,000	9,900,000
Amount of pending awards of mobility fund grants																																		68,800,000
Termination of facility																																	19,900,000
Number of term loans												2
Maximum aggregate additional borrowings subject to lender approval												100,000,000
Number of loans repaid in full										2
Interest expenses									4,700,000
Description of variable rate basis					one-week LIBOR		one-month LIBOR	Prime 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%	4.00%	3.00%	2.00%	1.00%	3.50%	2.50%								0.50%	2.00%
Commitment fee (as a percent)																										0.25%	0.50%							1.75%
Term loan assumed																																					$ 7,000,000
Ownership interest held by minority shareholder (as a percent)		42.00%	42.00%
Effective interest rate (as a percent)																																					7.00%

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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