CONDENSED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (483,963)	$ (153,587)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation	421,412	352,000
Amortization	19,149	14,385
Stock based compensation	11,494	11,763
Net gain on sale and disposal of property, plant and equipment	(21,707)	(5,750)
Changes in working capital components:
Trade receivables	269,765	353,963
Inventories	(290,429)	(95,743)
Prepaid expenses and other assets	215,133	(55,625)
Income tax receivable	(207,854)	(28,882)
Accounts payable	144,409	90,470
Accrued expenses	(26,896)	45,214
Net cash provided by operating activities	50,513	528,208
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant, equipment and construction in progress	(134,086)	(1,843,879)
Proceeds from sale of property, plant and equipment	21,707	21,000
Purchases of intangibles	(15,044)	(22,395)
Purchases of short-term investments	(1,915,000)	(3,399,000)
Proceeds on sale of short-term investments	2,266,000
Net cash provided by (used in) investing activities	223,577	(5,244,274)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from long-term debt		3,415,000
Payment of debt issuance costs		(139,418)
Payments on long-term debt	(69,564)	(10,858)
Repurchase of common stock	(15,038)
Proceeds from exercise of stock options	1,885	3,765
Net cash provided by (used in) financing activities	(82,717)	3,268,489
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	191,373	(1,447,577)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	1,048,713
CASH AND CASH EQUIVALENTS AT END OF PERIOD	1,240,086	800,889
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Construction in progress included in accounts payable		60,166
Cash paid for interest	35,776	6,699
Cash received for income taxes, net	$ (60,003)	$ (100,758)