PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 235,945		$ 230,357
Less: accumulated depreciation	126,879		118,822
Property and equipment, net	109,066		111,535
Total depreciation expense	8,445	$ 8,975
Depreciation expense in cost of revenue
Property, Plant and Equipment [Line Items]
Total depreciation expense	1,257	1,377
Depreciation expense in operating expenses
Property, Plant and Equipment [Line Items]
Total depreciation expense	7,188	$ 7,598
Infusion pumps
Property, Plant and Equipment [Line Items]
Property and equipment, gross	36,995		34,547
Equipment, furniture and other
Property, Plant and Equipment [Line Items]
Property and equipment, gross	55,267		52,913
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	96,477		92,229
Computer software, purchased and internally developed
Property, Plant and Equipment [Line Items]
Property and equipment, gross	32,764		30,744
Assets under development
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 14,442		$ 19,924