Equipment and Other Fixed Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Equipment and other fixed assets, gross	$ 158,621	$ 132,006
Less accumulated depreciation	(75,405)	(68,447)
Equipment and other fixed assets, net	83,216	63,559
Patient medical equipment
Property, Plant and Equipment [Line Items]
Equipment and other fixed assets, gross	132,311	112,071
Vehicles
Property, Plant and Equipment [Line Items]
Equipment and other fixed assets, gross	7,112	4,461
Other
Property, Plant and Equipment [Line Items]
Equipment and other fixed assets, gross	$ 19,198	$ 15,474