Property and Equipment

6 Months Ended

Jun. 30, 2017

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

The gross carrying amount and accumulated depreciation of property and equipment as of June 30, 2017 and December 31, 2016 are as follows:

	June 30, 2017			December 31, 2016
Property and Equipment:
Gross carrying amount	$	19,246,360		$	19,755,489
Accumulated depreciation	(18,387,382		)	(18,580,547		)
Property and Equipment, net	$	858,978		$	1,174,942

For the three months ended June 30, 2017 and 2016, depreciation expense was $135,669 and $180,475, respectively. For the six months ended June 30, 2017 and 2016, depreciation expense was $321,754 and $405,376, respectively.