CONDENSED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities
Net income (loss)	$ (1,721,089)	$ 5,239,459
Adjustments to reconcile net income (loss) to net cash used by operating activities:
Provision for doubtful accounts	92,000	141,000
Share based compensation	84,651
Depreciation and amortization	672,000	645,038
(Increase) decrease in assets:
Inventories	(908,099)	(1,447,486)
Accounts receivable	(352,444)	474,048
Other current assets	1,338,622	419,238
Other assets	(750)
Increase (decrease) in liabilities:
Accounts payable	(988,248)	(36,989)
Litigation proceeds subject to stipulation		(7,724,826)
Other accrued liabilities	139,817	321,124
Income taxes payable	2,717	(2,885)
Net cash used by operating activities	(1,640,823)	(1,972,279)
Cash flows from investing activities
Purchase of property, plant, and equipment	(1,671,649)	(1,263,296)
Change in restricted cash		600,897
Net cash used by investing activities	(1,671,649)	(662,399)
Cash flows from financing activities
Repayments of long-term debt and notes payable	(187,418)	(123,602)
Proceeds from the exercise of stock options	839,200	283,933
Proceeds from long-term debt		276,495
Payment of Preferred Stock dividends	(165,640)	(227,180)
Net cash provided by financing activities	486,142	209,646
Net decrease in cash and cash equivalents	(2,826,330)	(2,425,032)
Cash and cash equivalents at:
Beginning of period	18,045,044	22,128,977
End of period	15,218,714	19,703,945
Supplemental schedule of cash flow information:
Interest paid	158,325	165,269
Income taxes paid	2,025	9,017
Supplemental schedule of noncash investing and financing activities:
Preferred dividends declared, not paid	$ 55,113	$ 56,363