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LONG-TERM DEBT (Details) (USD $)			1 Months Ended	0 Months Ended						9 Months Ended						0 Months Ended		9 Months Ended							9 Months Ended									9 Months Ended					9 Months Ended				0 Months Ended				9 Months Ended			1 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	May 31, 2011 BDC	Sep. 16, 2011 Credit facility LIBOR	Sep. 16, 2011 Credit facility Base rate	Sep. 16, 2011 Credit facility Minimum LIBOR	Sep. 16, 2011 Credit facility Minimum Base rate	Sep. 16, 2011 Credit facility Maximum LIBOR	Sep. 16, 2011 Credit facility Maximum Base rate	Sep. 30, 2012 Amended Credit Facility	Sep. 30, 2012 Amended Credit Facility One-week LIBOR	Sep. 30, 2012 Amended Credit Facility One-month LIBOR	Sep. 30, 2012 Term loans	Dec. 31, 2011 Term loans	Sep. 30, 2010 Term loans Credit facility	May 18, 2012 Term loans Amended Credit Facility item	May 18, 2012 Term Loan A-1 Amended Credit Facility	Sep. 30, 2012 Term Loan A-1 Amended Credit Facility LIBOR	Sep. 30, 2012 Term Loan A-1 Amended Credit Facility Base rate	Sep. 30, 2012 Term Loan A-1 Amended Credit Facility Minimum LIBOR	Sep. 30, 2012 Term Loan A-1 Amended Credit Facility Minimum Base rate	Sep. 30, 2012 Term Loan A-1 Amended Credit Facility Maximum LIBOR	Sep. 30, 2012 Term Loan A-1 Amended Credit Facility Maximum Base rate	May 18, 2012 Term Loan A-2 Amended Credit Facility	Sep. 30, 2012 Term Loan A-2 Amended Credit Facility LIBOR	Sep. 30, 2012 Term Loan A-2 Amended Credit Facility Base rate	Sep. 30, 2012 Term Loan A-2 Amended Credit Facility Minimum LIBOR	Sep. 30, 2012 Term Loan A-2 Amended Credit Facility Minimum Base rate	Sep. 30, 2012 Term Loan A-2 Amended Credit Facility Maximum LIBOR	Sep. 30, 2012 Term Loan A-2 Amended Credit Facility Maximum Base rate	Dec. 31, 2011 Revolver loan	Sep. 30, 2010 Revolver loan Credit facility	May 18, 2012 Revolver loan Amended Credit Facility	Sep. 30, 2012 Revolver loan Amended Credit Facility LIBOR	Sep. 30, 2012 Revolver loan Amended Credit Facility Base rate	Sep. 30, 2012 Revolver loan Amended Credit Facility Minimum	Sep. 30, 2012 Revolver loan Amended Credit Facility Minimum LIBOR	Sep. 30, 2012 Revolver loan Amended Credit Facility Minimum Base rate	Sep. 30, 2012 Revolver loan Amended Credit Facility Maximum	Sep. 30, 2012 Revolver loan Amended Credit Facility Maximum LIBOR	Sep. 30, 2012 Revolver loan Amended Credit Facility Maximum Base rate	Sep. 30, 2010 Swingline sub-facility Credit facility	Sep. 16, 2011 Swingline sub-facility Credit facility Base rate	Sep. 16, 2011 Swingline sub-facility Credit facility Minimum Base rate	Sep. 16, 2011 Swingline sub-facility Credit facility Maximum Base rate	May 18, 2012 Swingline sub-facility Amended Credit Facility	Sep. 30, 2012 Swingline sub-facility Amended Credit Facility Base rate	Sep. 30, 2012 Swingline sub-facility Amended Credit Facility Minimum Base rate	Sep. 30, 2012 Swingline sub-facility Amended Credit Facility Maximum Base rate	Oct. 31, 2012 Letter of credit sub-facility Amended Credit Facility	Oct. 29, 2012 Letter of credit sub-facility Amended Credit Facility	Sep. 30, 2012 Letter of credit sub-facility Amended Credit Facility	Sep. 30, 2012 Note Payable - Other	Dec. 31, 2011 Note Payable - Other	May 02, 2011 Note Payable - Other M3 Wireless, Ltd. Keytech Ltd.
Long-term debt
Outstanding debt	$ 275,992,000	$ 286,021,000											$ 271,500,000	$ 252,113,000			$ 125,000,000							$ 150,000,000							$ 28,156,000																					$ 100,000	$ 4,492,000	$ 5,752,000
Less: current portion	(15,680,000)	(25,068,000)
Total long-term debt	260,312,000	260,953,000
Less: debt discount	(5,744,000)	(3,807,000)
Net carrying amount	254,568,000	257,146,000
Maximum borrowing capacity															275,000,000	275,000,000																100,000,000	100,000,000									10,000,000				10,000,000					55,000,000
Number of term loans																2
Maximum aggregate additional borrowings subject to lender approval															50,000,000	100,000,000
Description of variable rate basis				LIBOR	Base Rate						One-week LIBOR	One-month LIBOR						LIBOR	Base Rate						LIBOR	Base Rate								LIBOR	Base Rate								Base Rate				Base Rate
Basis spread on variable rate (as a percent)						2.75%	1.75%	4.25%	3.25%		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%			1.25%	2.75%			0.50%	2.00%
Weighted-average interest rate (as a percent)										4.36%
Availability under the facility																																																				99,900,000
Deferred financing costs										700,000
Term loan owed to related party																																																							$ 7,000,000
Ownership interest held by minority shareholder (as a percent)			42.00%
Effective interest rate (as a percent)																																																							7.00%
Commitment fee (as a percent)																																				0.25%			0.50%											1.75%

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