GOODWILL AND INTANGIBLE ASSETS - Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite Lived Assets
Gross Carrying Amount	$ 59,250	$ 27,150
Accumulated Amortization	(28,207)	(22,022)
Net Carrying Amount	31,043	5,128
Infusion customer relationships
Finite Lived Assets
Gross Carrying Amount	25,650	25,650
Accumulated Amortization	(23,768)	(20,789)
Net Carrying Amount	1,882	4,861
Managed care contracts
Finite Lived Assets
Gross Carrying Amount	24,700	0
Accumulated Amortization	(1,898)	0
Net Carrying Amount	22,802	0
Licenses
Finite Lived Assets
Gross Carrying Amount	5,400	0
Accumulated Amortization	(906)	0
Net Carrying Amount	4,494	0
Trade name
Finite Lived Assets
Gross Carrying Amount	1,800	0
Accumulated Amortization	(281)	0
Net Carrying Amount	1,519	0
Non-compete agreements
Finite Lived Assets
Gross Carrying Amount	1,700	1,500
Accumulated Amortization	(1,354)	(1,233)
Net Carrying Amount	$ 346	$ 267