(Unaudited) Condensed Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 26,508	$ 478,163
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	627,141	569,081
Amortization	14,328	15,309
Non-cash interest expense	11,120	6,367
Deferred income taxes	9,112	206,911
Stock-based compensation	148,035	50,312
(Gain) loss on disposal of fixed assets	(3,663)	2,109
(Recovery of) provision for uncollectible accounts, net	(17,643)	2,225
Changes in:
Accounts receivable, gross	141,114	38,723
Accrued interest income	24,013	(10,843)
Inventory	(605,126)	(783,190)
Prepaid expenses and other current assets	242,683	(460,184)
Other assets	(920)
Accounts payable and accrued expenses	262,270	891
Deferred revenue	(33,856)	33,856
Net cash provided by operating activities	845,116	149,730
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property, plant and equipment	(13,079,386)	(1,794,755)
Acquisition of certain business assets	(8,661)	(469,807)
Maturities of investments	5,699,000	3,968,000
Purchases of investments	(249,000)	(4,216,000)
Proceeds from sale of fixed assets	45,000
Net cash used for investing activities	(7,593,047)	(2,512,562)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from public offering, net		5,313,223
Proceeds from private placement, net	1,037,164
Proceeds from debt issuance	3,024,343
Debt principal repayments	(111,981)	(100,545)
Debt issuance costs	(63,358)	(46,734)
Proceeds from exercise of stock options	16,500	31,975
Tax benefits related to stock options	183
Net cash provided by financing activities	3,902,851	5,197,919
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(2,845,080)	2,835,087
BEGINNING CASH AND CASH EQUIVALENTS	5,150,344	1,573,328
ENDING CASH AND CASH EQUIVALENTS	2,305,264	4,408,415
CASH PAID FOR:
Income taxes	4,000	125,125
Interest expense	123,034	115,682
NON-CASH ACTIVITIES:
Change in capital expenditures included in accounts payable and accrued expenses	1,286,289	163,635
Net change in fair value of interest rate swaps	(3,419)	79,767
Fixed asset disposals, gross	$ 1,500	$ 58,714