CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 675,184	$ 3,908,177
Accounts receivable, net of allowance for doubtful accounts	11,514,646	8,886,790
Inventories, net	7,686,101	5,402,735
Prepaid expenses and other current assets	1,382,285	1,045,651
Total Current Assets	21,258,216	19,243,353
Property, plant and equipment, net	101,658,434	101,493,080
Deposits on equipment	3,583,799	3,620,444
Other assets	2,239,533	2,094,339
Total Assets	128,739,982	126,451,216
CURRENT LIABILITIES:
Accounts payable	7,579,513	6,884,155
Accrued expenses	5,073,975	4,531,139
Accrued warrants	632,072	253,391
Borrowings under Credit Facilities	7,500,000	7,000,000
Total Current Liabilities	20,785,560	18,668,685
Total Liabilities	20,785,560	18,668,685
STOCKHOLDERS' EQUITY:
Common stock — voting, $0.001 par value, 200,000,000 shares authorized, 34,513,231 and 33,961,650 issued and outstanding on June 30, 2017 and December 31, 2016, respectively	34,513	33,961
Additional paid-in capital	305,180,732	299,477,706
Accumulated deficit	(197,260,823)	(191,729,136)
Total Stockholders' Equity	107,954,422	107,782,531
Total Liabilities and Stockholders' Equity	$ 128,739,982	$ 126,451,216