PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 206,978		$ 206,978		$ 211,820
Less: accumulated depreciation	93,961		93,961		78,622
Property and equipment, net	113,017		113,017		133,198
Depreciation expense	9,457	$ 9,906	33,707	$ 21,704
Infusion pumps
Property, Plant and Equipment [Line Items]
Property and equipment, gross	33,368		33,368		30,416
Equipment, furniture and other
Property, Plant and Equipment [Line Items]
Property and equipment, gross	49,931		49,931		51,454
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	79,828		79,828		80,916
Computer software, purchased and internally developed
Property, Plant and Equipment [Line Items]
Property and equipment, gross	36,567		36,567		34,884
Assets under development
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,284		7,284		$ 14,150
Depreciation expense in cost of revenue
Property, Plant and Equipment [Line Items]
Depreciation expense	1,643	1,384	5,161	2,855
Depreciation expense in operating expenses
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 7,814	$ 8,522	$ 28,546	$ 18,849