Inventories

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Inventories

3. Inventories

	December 31,
Inventories consisted of:	2017		2016
Finished goods	$	33,110,826	$	33,971,922
Work in process		193,557		187,833
Materials and supplies		6,782,488		3,078,106
	$	40,086,871	$	37,237,861

Inventories are stated net of valuation allowances for slow moving and obsolete inventory of $654,855 as of December 31, 2017 and $677,253 as of December 31, 2016.