Property and Equipment, Net, and Other Assets

12 Months Ended

Dec. 31, 2015

Property Plant And Equipment [Abstract]

Property and Equipment, Net, and Other Assets

3. Property and Equipment, Net, and Other Assets

At December 31, 2015 and 2014, Property and equipment, net, and other assets consisted of the following:

	As of December 31,
	2015			2014
Vehicles	$	544,984		$	544,984
Computer equipment		946,929			793,109
Office furniture and fixtures		634,547			329,210
Machinery and equipment		514,041			458,257
Leasehold improvements		641,273			101,112
Property and equipment, gross		3,281,774			2,226,672
Accumulated depreciation		(1,973,538	)		(1,692,835	)
Property and equipment, net		1,308,236			533,837
Security deposits and other assets		300,396			219,656
Property and equipment, net, and other assets	$	1,608,632		$	753,493

We compute depreciation using the straight-line method over the estimated useful lives of the property and equipment.  Depreciation expense for the year ended December 31, 2015 was $314,178, inclusive of $3,641 of depreciation expense reflected within “Cost of revenue” in our consolidated statement of operations as it related to assets used in directly servicing customer contracts.  Depreciation expense for the year ended December 31, 2014 was $292,067, with no depreciation expense recorded to “Cost of revenue.” At December 31, 2015, our capital lease assets were $426,757, net of $34,041 of accumulated depreciation.  At December 31, 2014, our capital lease assets were $51,003, net of $11,539 of accumulated depreciation.