Property and equipment

9 Months Ended

Sep. 30, 2016

6. Property and equipment

Property and equipment, net consist of the following:


	Estimated			As of		As of
	useful life			September 30,		December 31,
	(in years)			2016		2015
Equipment	2	-	7	$	1,008,798	$	958,175
Computer hardware	3	-	5		3,409,750		3,266,233
Furniture and fixtures	5	-	7		227,851		192,565
Leasehold improvements	3	-	10		786,637		746,336
Total property and equipment, gross					5,433,036		5,163,309
Less: Accumulated depreciation and amortization					(4,111,694)		(3,351,690)
Property and equipment, net				$	1,321,342	$	1,811,619

Property and equipment depreciation and amortization expense is as follows:


	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2016		2015		2016		2015
Depreciation and amortization expense	$	328,181	$	164,538	$	768,740	$	489,010

Included in depreciation and amortization expense for the three and nine months ended September 30, 2016 is $0.2 million and $0.3 million, respectively, of expense related to the acceleration of amortization on certain assets due to exiting a floor in the Company’s corporate location before the end of the lease term. The cease use date is October 1, 2016. For additional information on the Company’s restructuring charges disclosure, refer to Note 14.