PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 205,639	$ 211,820
Less: accumulated depreciation	84,490	78,622
Property and equipment, net	121,149	133,198
Depreciation expense	42,766	31,808	$ 21,483
Gain on business casualty loss	0	626	(3,549)
Hurricane
Property, Plant and Equipment [Line Items]
Loss on disposition of property and equipment			600
Insurance proceeds			800
Property and Equipment | Hurricane
Property, Plant and Equipment [Line Items]
Insurance proceeds		600
Gain on business casualty loss		600
Depreciation expense in cost of revenue
Property, Plant and Equipment [Line Items]
Depreciation expense	6,586	4,179	2,993
Depreciation expense in operating expenses
Property, Plant and Equipment [Line Items]
Depreciation expense	36,180	27,629	$ 18,490
Infusion pumps
Property, Plant and Equipment [Line Items]
Property and equipment, gross	31,678	30,416
Equipment, furniture and other
Property, Plant and Equipment [Line Items]
Property and equipment, gross	47,886	51,454
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	87,483	80,916
Computer software, purchased and internally developed
Property, Plant and Equipment [Line Items]
Property and equipment, gross	27,799	34,884
Assets under development
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 10,793	$ 14,150