Property and Equipment

6 Months Ended

Jun. 30, 2019

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, 2019 and December 31, 2018 are as follows:

	June 30, 2019			December 31, 2018
Gross carrying amount	$	18,735,154		$	18,628,762
Accumulated depreciation	(18,250,566		)	(18,194,827		)
Property and Equipment, net	$	484,588		$	433,935

For the three months ended June 30, 2019 and 2018, depreciation expense was $61,612 and $71,441, respectively. For the six months ended June 30, 2019 and 2018, depreciation expense was $133,826 and $158,310, respectively.