CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 3,761,283	$ 7,554,388
Accounts receivable, net of allowance for doubtful accounts	15,558,276	12,326,703
Inventories, net	11,109,216	9,317,232
Prepaid expenses	2,400,310	1,078,232
Other current assets	289,321	681,550
Total Current Assets	33,118,406	30,958,105
Property, plant and equipment, net	109,559,987	102,094,248
Deposits on equipment	5,458,953	4,730,176
Operating lease right of use assets	9,366,228
Other assets	2,234,495	2,182,329
Total Assets	159,738,069	139,964,858
CURRENT LIABILITIES:
Accounts payable	11,334,998	9,166,412
Accrued expenses	8,217,565	9,050,551
Current operating lease liabilities	986,072
Borrowings under Credit Facilities	10,000,000	0
Total Current Liabilities	30,538,635	18,216,963
Long term operating lease liabilities	8,677,892
Other liabilities		273,420
Total Liabilities	39,216,527	18,490,383
STOCKHOLDERS' EQUITY:
Common stock — voting, $0.001 par value, 200,000,000 shares authorized, 35,866,322 issued and 35,852,153 outstanding on March 31, 2019, and 35,556,595 issued and 35,542,426 outstanding on December 31, 2018	35,866	35,556
Additional paid-in capital	325,457,147	323,079,437
Accumulated deficit	(204,774,682)	(201,352,682)
Accumulated other comprehensive income	59,437	(31,610)
Treasury stock, at cost — 14,169 shares on March 31, 2019 and December 31, 2018	(256,226)	(256,226)
Total Stockholders' Equity	120,521,542	121,474,475
Total Liabilities and Stockholders' Equity	$ 159,738,069	$ 139,964,858