PROPERTY AND EQUIPMENT

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property and Equipment

PROPERTY AND EQUIPMENT

Property and equipment consists of the following (in thousands):

	December 31,
	2017			2016
Computer and office equipment	$	31,371		$	30,060
Software capitalized for internal use	17,470			16,481
Vehicles	2,379			2,552
Medical equipment	36,230			32,086
Work in progress	2,478			4,370
Furniture and fixtures	5,534			5,319
Leasehold improvements	19,809			17,496
Property and equipment, gross	115,271			108,364
Less: Accumulated depreciation	(88,298		)	(75,686		)
Property and equipment, net	$	26,973		$	32,678

Depreciation expense, including expense related to assets under capital lease, for the years ended December 31, 2017, 2016 and 2015 was $15.9 million, $15.8 million, and $17.7 million, respectively.

Impairment

The Company, which assesses the impairment of its assets whenever events or changes in circumstances indicate that the carrying value may not be recoverable, has determined that no such events or changes have occurred and therefore, no impairment charge in relation to property, plant and equipment was incurred during the year ended December 31, 2017.