PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 217,506		$ 217,506		$ 205,639
Less: accumulated depreciation	110,718		110,718		84,490
Property and equipment, net	106,788		106,788		121,149
Total depreciation expense	9,140	$ 9,457	27,080	$ 33,707
Depreciation expense in cost of revenue
Property, Plant and Equipment [Line Items]
Total depreciation expense	1,664	1,643	4,410	5,161
Depreciation expense in operating expenses
Property, Plant and Equipment [Line Items]
Total depreciation expense	7,476	$ 7,814	22,670	$ 28,546
Infusion pumps
Property, Plant and Equipment [Line Items]
Property and equipment, gross	34,249		34,249		31,678
Equipment, furniture and other
Property, Plant and Equipment [Line Items]
Property and equipment, gross	53,770		53,770		47,886
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	91,789		91,789		87,483
Computer software, purchased and internally developed
Property, Plant and Equipment [Line Items]
Property and equipment, gross	29,804		29,804		27,799
Assets under development
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 7,894		$ 7,894		$ 10,793