Property and Equipment

9 Months Ended

Sep. 30, 2018

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

The gross carrying amount and accumulated depreciation of property and equipment as of September 30, 2018 and December 31, 2017 are as follows:

	September 30, 2018			December 31, 2017
Gross carrying amount	$	18,580,596		$	18,563,071
Accumulated depreciation	(18,137,451		)	(17,926,959		)
Property and Equipment, net	$	443,145		$	636,112

For the three months ended September 30, 2018 and 2017, depreciation expense was $77,697 and $107,813, respectively. For the nine months ended September 30, 2018 and 2017, depreciation expense was $236,007 and $429,567, respectively.