NOTES OFFERING AND GUARANTOR FINANCIAL INFORMATION (Details) (USD $)	3 Months Ended												12 Months Ended				12 Months Ended									1 Months Ended	12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2012 GSE	Dec. 31, 2011 GSE	Dec. 31, 2010 GSE	Dec. 31, 2012 GUARANTORS	Dec. 31, 2011 GUARANTORS	Dec. 31, 2010 GUARANTORS	Dec. 31, 2012 ELIMINATIONS	Dec. 31, 2011 ELIMINATIONS	Dec. 31, 2010 ELIMINATIONS	Nov. 30, 2010 11.5% senior secured notes	Dec. 31, 2012 11.5% senior secured notes item	Feb. 27, 2012 11.5% senior secured notes	Jan. 02, 2012 11.5% senior secured notes	Dec. 31, 2011 11.5% senior secured notes
Notes offering and guarantor financial information
Amount of offering																										$ 333,000,000
Fixed interest rate (as a percent)																										11.50%	11.50%	11.50%	11.50%	11.50%
Number of times interest is payable in a year																											2
Cash and cash equivalents	19,946,000				20,275,000				15,363,000				19,946,000	20,275,000	15,363,000		3,179,000	7,749,000	2,071,000	16,767,000	12,526,000	13,292,000
Accounts receivable - net of allowance for doubtful accounts	31,523,000				32,972,000								31,523,000	32,972,000			15,436,000	1,295,000		201,489,000	205,953,000		(185,402,000)	(174,276,000)
Inventories	65,221,000				56,558,000								65,221,000	56,558,000						65,221,000	56,558,000
Other current assets	13,730,000				14,909,000								13,730,000	14,909,000			881,000	5,204,000		12,849,000	9,705,000
Total current assets	130,420,000				124,714,000								130,420,000	124,714,000			19,496,000	14,248,000		296,326,000	284,742,000		(185,402,000)	(174,276,000)
Property and equipment, net	23,998,000				22,563,000								23,998,000	22,563,000			2,701,000	2,906,000		21,297,000	19,657,000
Intangible assets	12,365,000				14,715,000								12,365,000	14,715,000			8,851,000	10,881,000		3,514,000	3,834,000
Goodwill	49,944,000				49,944,000				49,944,000				49,944,000	49,944,000	49,944,000		49,944,000	49,944,000
Investment in subsidiaries																	796,231,000	749,224,000					(796,231,000)	(749,224,000)
Affiliate note and investments	5,075,000				4,587,000								5,075,000	4,587,000			40,000,000	40,000,000		5,075,000	4,587,000		(40,000,000)	(40,000,000)
Other assets	8,559,000				6,440,000								8,559,000	6,440,000			6,257,000	3,960,000		2,302,000	2,480,000
Total assets	230,361,000				222,963,000				222,018,000				230,361,000	222,963,000	222,018,000		923,480,000	871,163,000		328,514,000	315,300,000		(1,021,633,000)	(963,500,000)
Accounts payable	17,004,000				18,050,000								17,004,000	18,050,000			631,000	1,638,000		16,373,000	16,412,000
Accrued and other liabilities	32,670,000				33,771,000								32,670,000	33,771,000			8,596,000	14,110,000		24,074,000	19,661,000
Current portion of long-term debt	10,000,000				12,422,000								10,000,000	12,422,000			195,402,000	186,698,000		40,000,000	40,000,000		(225,402,000)	(214,276,000)
Current portion of deferred revenue	54,583,000				54,870,000								54,583,000	54,870,000			126,000	861,000		54,457,000	54,009,000
Total current liabilities	114,257,000				119,113,000								114,257,000	119,113,000			204,755,000	203,307,000		134,904,000	130,082,000		(225,402,000)	(214,276,000)
Deferred revenue	34,316,000				30,979,000								34,316,000	30,979,000			1,922,000	2,045,000		32,394,000	28,934,000
Long-term debt	322,470,000				325,028,000								322,470,000	325,028,000			310,598,000	314,522,000		11,872,000	10,506,000
Other long-term liabilities	3,114,000				1,639,000								3,114,000	1,639,000			650,001,000	605,085,000		(646,887,000)	(603,446,000)
Total liabilities	474,157,000				476,759,000								474,157,000	476,759,000			1,167,276,000	1,124,959,000		(467,717,000)	(433,924,000)		(225,402,000)	(214,276,000)
Interdivisional equity																				796,231,000	749,224,000		(796,231,000)	(749,224,000)
Members' deficit	(243,796,000)				(253,796,000)				(252,173,000)				(243,796,000)	(253,796,000)	(252,173,000)	(221,525,000)	(243,796,000)	(253,796,000)
Total liabilities and member's deficit	230,361,000				222,963,000								230,361,000	222,963,000			923,480,000	871,163,000		328,514,000	315,300,000		(1,021,633,000)	(963,500,000)
Revenue	122,737,000	139,613,000	146,334,000	110,058,000	119,142,000	128,605,000	129,090,000	104,567,000	109,013,000	124,640,000	131,082,000	105,934,000	518,742,000	481,404,000	470,669,000		9,097,000	6,924,000	4,810,000	516,119,000	474,480,000	465,859,000	(6,474,000)
Costs applicable to revenues													(314,822,000)	(288,755,000)	(283,369,000)		(10,961,000)	(8,696,000)	(9,553,000)	(310,335,000)	(280,059,000)	(273,816,000)	6,474,000
Operating expenses													(155,884,000)	(147,338,000)	(159,477,000)		(17,537,000)	(17,821,000)	(32,545,000)	(138,347,000)	(129,517,000)	(126,932,000)
Interest expense, net													(42,946,000)	(44,671,000)	(38,732,000)		(43,009,000)	(45,330,000)	(39,616,000)	63,000	659,000	884,000
Income from investment in consolidated subsidiaries																	47,007,000	40,596,000	61,701,000				(47,007,000)	(40,596,000)	(61,701,000)
Other non operating income (expenses)													4,602,000	4,531,000	(9,357,000)		24,793,000	28,451,000	(3,752,000)	(20,191,000)	(23,920,000)	(5,605,000)
Income tax expense													(317,000)	(1,264,000)	1,493,000		(15,000)	(217,000)	182,000	(302,000)	(1,047,000)	1,311,000
NET INCOME (LOSS)	(1,071,000)	3,264,000	7,178,000	4,000	(669,000)	1,979,000	5,190,000	(2,593,000)	(12,526,000)	1,759,000	1,721,000	(9,727,000)	9,375,000	3,907,000	(18,773,000)		9,375,000	3,907,000	(18,773,000)	47,007,000	40,596,000	61,701,000	(47,007,000)	(40,596,000)	(61,701,000)
Cash flows from operations													14,670,000	14,484,000	(10,593,000)		(57,706,000)	(35,271,000)	(64,908,000)	68,551,000	49,755,000	54,315,000	3,825,000
Cash flows provided by (used in) investing activities													(9,489,000)	(7,740,000)	(3,881,000)		(904,000)	(3,978,000)	(1,777,000)	(8,585,000)	(3,762,000)	(2,104,000)
Cash flows provided by (used in) financing activities													(5,510,000)	(1,832,000)	21,197,000		54,040,000	44,927,000	68,354,000	(55,725,000)	(46,759,000)	(47,157,000)	(3,825,000)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR				20,275,000				15,363,000				8,640,000	20,275,000	15,363,000	8,640,000		7,749,000	2,071,000	402,000	12,526,000	13,292,000	8,238,000
CASH AND CASH EQUIVALENTS AT END OF YEAR	$ 19,946,000				$ 20,275,000				$ 15,363,000				$ 19,946,000	$ 20,275,000	$ 15,363,000		$ 3,179,000	$ 7,749,000	$ 2,071,000	$ 16,767,000	$ 12,526,000	$ 13,292,000