SEGMENT AND RELATED INFORMATION (Details) $ in Thousands	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2014 USD ($) area	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Sep. 30, 2013 USD ($)	Jun. 30, 2013 USD ($)	Mar. 31, 2013 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Dec. 31, 2014 USD ($) segment area	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)
Segment and related information
Number of operating segments | segment													2
Net revenue
Net revenue	$ 278,910	$ 261,699	$ 255,574	$ 215,917	$ 255,048	$ 253,217	$ 253,667	$ 213,837	$ 471,491	$ 467,504	$ 733,190	$ 720,721	$ 1,012,100	$ 975,769	$ 923,521
Material costs	86,365	86,238	81,109	70,572	77,831	78,933	77,273	67,966	151,681	145,239	237,919	224,172	324,284	302,003	285,873
Personnel costs	93,516	89,104	88,738	82,228	83,742	82,071	82,836	77,131	170,966	159,967	260,070	242,038	353,586	325,780	299,004
Other expenses													268,021	200,246	196,970
Depreciation and amortization	9,978	9,818	9,826	9,307	8,487	8,526	8,805	8,367	19,133	17,172	28,951	25,698	38,929	34,185	32,589
Income from operations	11,264	(849)	16,465	400	34,544	34,309	33,428	11,274	16,865	44,702	16,016	79,011	27,280	113,555	109,085
Interest expense (income)	7,191	7,255	7,063	6,768	6,372	6,942	8,616	8,646	13,831	17,262	21,086	24,204	28,277	30,576	34,620
Extinguishment of Debt							6,645			6,645		6,645		6,645
(Loss) income from continuing operations before income taxes	4,073	(8,104)	9,402	(6,368)	28,172	27,367	18,167	2,628	3,034	20,795	(5,070)	48,162	(997)	76,334	74,465
Provision for income taxes	1,267	(10,054)	10,832	(22)	13,077	9,815	6,688	875	10,810	7,563	756	17,378	2,023	30,455	26,206
(Loss) income from continuing operations	2,806	1,950	(1,430)	(6,346)	15,095	17,552	11,479	1,753	(7,776)	13,232	(5,826)	30,784	(3,020)	45,879	48,259
EBITDA													66,209	147,740	141,674
Total assets	1,302,305	$ 1,288,956	$ 1,278,736	$ 1,285,920	1,214,988	$ 1,196,595	$ 1,199,473	$ 1,186,216	$ 1,278,736	$ 1,199,473	$ 1,288,956	$ 1,196,595	1,302,305	1,214,988	1,201,288
Capital expenditures													27,096	25,907	24,503
Operating segments
Net revenue
Net revenue													1,012,100	975,769	923,521
Material costs													324,284	302,003	285,873
Other
Net revenue
Other expenses													88,124	45,496	47,744
Depreciation and amortization													8,138	7,169	6,871
Income from operations													(96,262)	(52,665)	(54,615)
Interest expense (income)													(18,267)	(17,092)	(7,181)
Extinguishment of Debt														6,645
(Loss) income from continuing operations before income taxes													(77,995)	(42,218)	(47,434)
Provision for income taxes													2,023	30,455	26,206
(Loss) income from continuing operations													(80,018)	(72,673)	(73,640)
EBITDA													(88,124)	(45,496)	(47,744)
Total assets	$ 191,533				149,785								191,533	149,785	147,675
Capital expenditures													11,724	14,551	14,298
Consolidating Adjustments
Net revenue
Net revenue													(183,640)	(222,899)	(208,823)
Material costs													$ (183,640)	(222,899)	(208,823)
Patient Care
Segment and related information
Medicare reimbursement for O&P products and services based on prices set forth in fee schedules, number of regional pricing areas | area	10												10
Net revenue
Net revenue													$ 837,080	803,180	752,425
Material costs													240,685	226,646	205,538
Personnel costs													305,651	279,089	252,568
Other expenses													152,176	129,090	120,934
Depreciation and amortization													18,769	14,468	13,030
Income from operations													79,208	115,973	124,422
Interest expense (income)													33,465	33,198	32,476
(Loss) income from continuing operations before income taxes													45,743	82,775	91,946
(Loss) income from continuing operations													45,743	82,775	91,946
EBITDA													97,977	130,441	137,452
Total assets	$ 848,051				805,248								848,051	805,248	794,698
Capital expenditures													14,067	10,821	7,460
Patient Care | Operating segments
Net revenue
Net revenue													837,080	803,180	752,425
Material costs													281,276	264,560	241,471
Patient Care | Intersegments
Net revenue
Material costs													40,591	37,914	35,933
Products and Services
Net revenue
Net revenue													175,020	172,589	171,096
Material costs													83,599	75,357	80,335
Personnel costs													47,935	46,691	46,436
Other expenses													27,721	25,660	28,292
Depreciation and amortization													12,022	12,548	12,688
Income from operations													44,334	50,247	39,278
Interest expense (income)													13,079	14,470	9,325
(Loss) income from continuing operations before income taxes													31,255	35,777	29,953
(Loss) income from continuing operations													31,255	35,777	29,953
EBITDA													56,356	62,795	51,966
Total assets	$ 262,721				$ 259,955								262,721	259,955	258,915
Capital expenditures													1,305	535	2,745
Products and Services | Operating segments
Net revenue
Net revenue													358,660	395,488	379,919
Material costs													226,648	260,342	253,225
Products and Services | Intersegments
Net revenue
Net revenue													183,640	222,899	208,823
Material costs													$ 143,049	$ 184,985	$ 172,890