Property and Equipment

3 Months Ended

Mar. 31, 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 March 31, 2018 and December 31, 2017 are as follows:

	March 31, 2018			December 31, 2017
Property and Equipment:
Gross carrying amount	$	18,591,087		$	18,563,071
Accumulated depreciation	(18,033,288		)	(17,926,959		)
Property and Equipment, net	$	557,799		$	636,112

For the three months ended March 31, 2018 and 2017, depreciation expense was $86,869 and $186,085, respectively.