NOTES OFFERING, GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION (Details) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			1 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013 GSE	Sep. 30, 2012 GSE	Sep. 30, 2013 GSE	Sep. 30, 2012 GSE	Dec. 31, 2012 GSE	Sep. 30, 2013 GUARANTORS	Sep. 30, 2012 GUARANTORS	Sep. 30, 2013 GUARANTORS	Sep. 30, 2012 GUARANTORS	Dec. 31, 2012 GUARANTORS	Sep. 30, 2013 ELIMINATIONS	Sep. 30, 2012 ELIMINATIONS	Sep. 30, 2013 ELIMINATIONS	Sep. 30, 2012 ELIMINATIONS	Dec. 31, 2012 ELIMINATIONS	Nov. 30, 2010 Senior Secured Notes
Notes offering and guarantor financial information
Amount of offering																					$ 333,000,000
Cash & cash equivalents	33,573,000	18,811,000	33,573,000	18,811,000		24,380,000	14,693,000	24,380,000	14,693,000		9,193,000	4,118,000	9,193,000	4,118,000
Accounts receivable - less allowance for doubtful accounts	36,551,000		36,551,000		31,523,000	4,122,000		4,122,000		3,308,000	215,204,000		215,204,000		213,617,000	(182,775,000)		(182,775,000)		(185,402,000)
Note from affiliate	2,500,000		2,500,000			2,500,000		2,500,000
Inventories	79,266,000		79,266,000		65,221,000						79,266,000		79,266,000		65,221,000
Prepaid expenses and other assets	15,579,000		15,579,000		13,730,000	1,290,000		1,290,000		881,000	14,289,000		14,289,000		12,849,000
Total current assets	167,469,000		167,469,000		130,420,000	32,292,000		32,292,000		7,368,000	317,952,000		317,952,000		308,454,000	(182,775,000)		(182,775,000)		(185,402,000)
Property and equipment, net	24,700,000		24,700,000		23,998,000	3,336,000		3,336,000		2,701,000	21,364,000		21,364,000		21,297,000
Affiliate note and investments	4,934,000		4,934,000		5,075,000	40,000,000		40,000,000		40,000,000	4,934,000		4,934,000		5,075,000	(40,000,000)		(40,000,000)		(40,000,000)
Intangible assets, net	10,938,000		10,938,000		12,365,000	7,885,000		7,885,000		8,851,000	3,053,000		3,053,000		3,514,000
Goodwill	49,944,000		49,944,000		49,944,000	49,944,000		49,944,000		49,944,000
Investment in subsidiaries						838,741,000		838,741,000		796,231,000						(838,741,000)		(838,741,000)		(796,231,000)
Deferred tax assets, net	107,000		107,000		79,000						107,000		107,000		79,000
Other assets	5,640,000		5,640,000		8,480,000	3,741,000		3,741,000		6,257,000	1,899,000		1,899,000		2,223,000
Total assets	263,732,000		263,732,000		230,361,000	975,939,000		975,939,000		911,352,000	349,309,000		349,309,000		340,642,000	(1,061,516,000)		(1,061,516,000)		(1,021,633,000)
Accounts payable	21,750,000		21,750,000		17,004,000	245,000		245,000		631,000	21,505,000		21,505,000		16,373,000
Accrued and other liabilities	46,990,000		46,990,000		32,670,000	17,179,000		17,179,000		8,596,000	29,811,000		29,811,000		24,074,000
Deferred revenue and gains	65,978,000		65,978,000		54,583,000	1,270,000		1,270,000		126,000	64,708,000		64,708,000		54,457,000
Current portion of long-term debt	10,000,000		10,000,000		10,000,000	192,775,000		192,775,000		195,402,000	40,000,000		40,000,000		40,000,000	(222,775,000)		(222,775,000)		(225,402,000)
Total current liabilities	144,718,000		144,718,000		114,257,000	211,469,000		211,469,000		204,755,000	156,024,000		156,024,000		134,904,000	(222,775,000)		(222,775,000)		(225,402,000)
Deferred revenue and gains	37,333,000		37,333,000		34,316,000	1,829,000		1,829,000		1,922,000	35,504,000		35,504,000		32,394,000
Long-term debt, net of current portion	311,385,000		311,385,000		322,470,000	311,385,000		311,385,000		310,598,000					11,872,000
Other long-term liabilities	2,264,000		2,264,000		3,114,000	683,224,000		683,224,000		637,873,000	(680,960,000)		(680,960,000)		(634,759,000)
Total liabilities	495,700,000		495,700,000		474,157,000	1,207,907,000		1,207,907,000		1,155,148,000	(489,432,000)		(489,432,000)		(455,589,000)	(222,775,000)		(222,775,000)		(225,402,000)
Interdivisional equity											838,741,000		838,741,000		796,231,000	(838,741,000)		(838,741,000)		(796,231,000)
Members' deficit	(231,968,000)		(231,968,000)		(243,796,000)	(231,968,000)		(231,968,000)		(243,796,000)
Total liabilities and member's deficit	263,732,000		263,732,000		230,361,000	975,939,000		975,939,000		911,352,000	349,309,000		349,309,000		340,642,000	(1,061,516,000)		(1,061,516,000)		(1,021,633,000)
Revenue	148,920,000	139,613,000	419,829,000	396,005,000		973,000	1,297,000	4,239,000	6,499,000		148,246,000	139,569,000	416,892,000	395,213,000		(299,000)	(1,253,000)	(1,302,000)	(5,707,000)
Costs applicable to revenues	(90,392,000)	(84,653,000)	(254,148,000)	(238,803,000)		(586,000)	(1,314,000)	(3,370,000)	(8,026,000)		(90,105,000)	(84,592,000)	(252,080,000)	(236,484,000)		299,000	1,253,000	1,302,000	5,707,000
Operating expenses	(41,545,000)	(41,920,000)	(116,273,000)	(117,952,000)		(4,260,000)	(4,991,000)	(12,151,000)	(13,329,000)		(37,285,000)	(36,929,000)	(104,122,000)	(104,623,000)
Interest expense, net	(9,561,000)	(10,976,000)	(28,725,000)	(32,901,000)		(9,571,000)	(10,949,000)	(28,741,000)	(32,957,000)		10,000	(27,000)	16,000	56,000
Income from investment in consolidated subsidiaries						14,221,000	11,847,000	42,510,000	36,991,000							(14,221,000)	(11,847,000)	(42,510,000)	(36,991,000)
Other non operating income (expenses)	(95,000)	1,257,000	1,728,000	4,265,000		6,484,000	7,405,000	19,754,000	21,410,000		(6,579,000)	(6,148,000)	(18,026,000)	(17,145,000)
Income tax expense	(70,000)	(57,000)	(182,000)	(168,000)		(4,000)	(31,000)	(12,000)	(142,000)		(66,000)	(26,000)	(170,000)	(26,000)
NET INCOME	7,257,000	3,264,000	22,229,000	10,446,000		7,257,000	3,264,000	22,229,000	10,446,000		14,221,000	11,847,000	42,510,000	36,991,000		(14,221,000)	(11,847,000)	(42,510,000)	(36,991,000)
Cash flows from operations			44,027,000	17,527,000				2,961,000	(43,863,000)				41,066,000	59,365,000					2,025,000
Cash flows used in investing activities			(7,539,000)	(8,307,000)				(1,955,000)	(1,607,000)				(5,584,000)	(6,700,000)
Cash flows provided by (used in) financing activities			(22,861,000)	(10,684,000)				20,195,000	52,414,000				(43,056,000)	(61,073,000)					(2,025,000)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD			19,946,000	20,275,000				3,179,000	7,749,000				16,767,000	12,526,000
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 33,573,000	$ 18,811,000	$ 33,573,000	$ 18,811,000		$ 24,380,000	$ 14,693,000	$ 24,380,000	$ 14,693,000		$ 9,193,000	$ 4,118,000	$ 9,193,000	$ 4,118,000