Consolidated Balance Sheets [Parenthetical] - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Cash and cash equivalents	$ 346,404	$ 150,332
Allowance for doubtful accounts	126,000	230,000
Inventory, Net, Total	17,869,911	17,755,300
Prepaid expenses	1,057,464	1,983,915
Other current assets	991,297	578,888
Machinery and equipment	26,847,110	26,739,353
Office Furniture and Equipment	3,512,613	3,473,009
Accumulated depreciation and amortization	32,471,694	31,062,484
Goodwill	1,473,176	1,473,176
Notes payable - current portion	501,710	328,942
Due from related party	46,000	47,000
Trade payables	4,271,860	4,468,859
Line Of Credit, Current	10,952,924	12,158,300
Discount On Notes Payable Current	171,000	146,000
Accrued liabilities	2,942,481	2,493,435
Notes Payable - Affiliates	8,670	9,034
Notes Payable, net of current portion, net discount	113,000	284,000
Notes payable, net of current portion	$ 6,665,700	$ 7,177,406
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0	$ 0
Preferred Stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred Stock, shares issued (in shares)	0	0
Preferred Stock, shares outstanding (in shares)	0	0
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	5,000,000	5,000,000
Common stock, shares issued (in shares)	3,386,284	3,376,743
Common stock, shares outstanding (in shares)	3,310,657	3,301,116
Treasury Stock, Shares (in shares)	75,627	75,627
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents	$ 82,000	$ 14,000
Allowance for doubtful accounts	4,000	9,000
Inventory, Net, Total	1,264,000	699,000
Prepaid expenses	17,000	22,000
Other current assets	33,000	46,000
Machinery and equipment	546,000	640,000
Office Furniture and Equipment	66,000	46,000
Accumulated depreciation and amortization	150,000	129,000
Goodwill	440,000	440,000
Notes payable - current portion	311,000	114,000
Trade payables	238,000	74,000
Line Of Credit, Current	484,000	494,000
Accrued liabilities	655,000	60,000
Notes Payable - Affiliates	183,000	179,000
Notes payable, net of current portion	$ 200	$ 322,000