Consolidated Statements of Cash Flows (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income (loss)	$ 497,600	$ (59,500)
Adjustment to reconcile net income (loss) to net cash used by operating activities:
Depreciation and amortization	35,800	32,400
Stock-based compensation	17,500	11,600
Loss on disposal of assets	0	7,200
Change in operating assets and liabilities:
Trade receivables	(561,600)	(278,900)
Inventories	170,500	(232,100)
Prepaid expenses and other assets	55,900	(27,500)
Net payments on obligations collateralized by receivables and inventory	0	(1,201,400)
Income taxes payable	8,400	0
Accounts payable and accrued expenses	(330,100)	(639,200)
Total adjustments to net income (loss)	(603,600)	(2,327,900)
Net Cash Used by Operating Activities	(106,000)	(2,387,400)
Cash flow from investing activities:
Net proceeds from sale of assets held for sale	0	8,922,600
Purchase of property, plant and equipment	(9,900)	(120,600)
Net Cash (Used) Provided by Investing Activities	(9,900)	8,802,000
Cash flow from financing activities:
Principal payments on long-term debt	0	(3,363,300)
Proceeds from exercise of stock options	0	52,700
Net Cash Used by Financing Activities	0	(3,310,600)
Net (Decrease) Increase in Cash and Cash Equivalents	(115,900)	3,104,000
Cash and Cash Equivalents, beginning of period	3,126,200	253,900
Cash and Cash Equivalents, end of period	3,010,300	3,357,900
Supplemental disclosures:
Cash paid during the period for interest	$ 7,200	$ 26,900