Inventories (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2018

Dec. 31, 2017

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consisted of the following at June 30, 2018 and December 31, 2017:

	2018		2017
Finished goods	$	3,351,160	$	4,611,973
Spare parts		227,091		187,158
Reserve for inventory obsolescence		(91,041)		(172,562	)
Inventories, net	$	3,487,210	$	4,626,569

Inventories consisted of the following at December 31, 2017 and 2016:

	2017			2016
Finished goods	$	4,611,973		$	4,102,621
Spare parts		187,158			183,357
Reserves for inventory obsolescence		(172,562	)		(121,862	)
Inventories, net	$	4,626,569		$	4,164,116