PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 230,357	$ 205,639
Less: accumulated depreciation	118,822	84,490
Property and equipment, net	111,535	121,149
Depreciation expense	35,611	42,766	$ 31,808
Depreciation expense in cost of revenue
Property, Plant and Equipment [Line Items]
Depreciation expense	5,746	6,586	4,179
Depreciation expense in operating expenses
Property, Plant and Equipment [Line Items]
Depreciation expense	29,865	36,180	$ 27,629
Infusion pumps
Property, Plant and Equipment [Line Items]
Property and equipment, gross	34,547	31,678
Equipment, furniture and other
Property, Plant and Equipment [Line Items]
Property and equipment, gross	52,913	47,886
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	92,229	87,483
Computer software, purchased and internally developed
Property, Plant and Equipment [Line Items]
Property and equipment, gross	30,744	27,799
Assets under development
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 19,924	$ 10,793