PROPERTY AND EQUIPMENT

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Property and Equipment

PROPERTY AND EQUIPMENT

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

	December 31,
	2015			2014
Computer and office equipment	$	22,561		$	22,662
Software capitalized for internal use	15,600			14,914
Vehicles	1,938			2,106
Medical equipment	28,423			27,668
Work in progress	6,624			3,287
Furniture and fixtures	4,543			4,487
Leasehold improvements	14,285			13,690
Property and equipment, gross	93,974			88,814
Less: Accumulated depreciation	(62,035		)	(50,643		)
Property and equipment, net	$	31,939		$	38,171

Work in progress at December 31, 2015 and 2014 includes $1.8 million and $0.6 million, respectively, of internally developed software costs to be capitalized upon completion.

Depreciation expense, including expense related to assets under capital lease, for the years ended December 31, 2015, 2014 and 2013 was $17.6 million, $16.4 million, and $13.4 million, respectively.  Depreciation expense for the years ended December 31, 2015, 2014 and 2013 includes $2.5 million, $2.4 million, and $1.7 million, respectively, related to costs related to software capitalized for internal use.

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, 2015.