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Condensed Consolidated Balance Sheets [Parenthetical] (USD $)
Sep. 30, 2014
Dec. 31, 2013
Cash and cash equivalents $ 171,843 $ 666,616
Allowance for doubtful accounts 263,000 217,000
Inventory, net 18,400,506 15,428,413
Prepaid expenses 1,181,254 1,315,384
Other current assets 706,459 945,914
Machinery and equipment 27,187,213 26,639,722
Office furniture and equipment 3,463,299 3,287,951
Accumulated depreciation and amortization 31,191,753 29,718,564
Goodwill 1,473,176 1,473,176
Due from related party 23,000 24,000
Checks written in excess of bank balance 1,044,151 704,757
Trade payables 5,579,077 3,573,007
Line of credit 11,654,227 8,769,024
Discount on notes payable current 141,000 125,000
Accrued liabilities 2,473,569 3,003,704
Notes Payable, net of current portion, net discount 322,000 430,000
Notes payable, net of current portion 7,258,199 7,511,383
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, shares authorized (in shares) 5,000,000 5,000,000
Common stock, shares issued (in shares) 3,376,743 3,320,773
Common stock, shares outstanding (in shares) 3,301,116 3,248,646
Treasury stock, shares (in shares) 75,627 72,127
Variable Interest Entity, Primary Beneficiary [Member]
    
Cash and cash equivalents 26,000 54,000
Allowance for doubtful accounts 6,000 0
Inventory, net 724,000 390,000
Prepaid expenses 3,000 3,000
Other current assets 74,000 76,000
Machinery and equipment 700,000 723,000
Office furniture and equipment 44,000 39,000
Accumulated depreciation and amortization 128,000 92,000
Goodwill 440,000 440,000
Checks written in excess of bank balance 3,000 0
Trade payables 120,000 94,000
Line of credit 497,000 219,000
Discount on notes payable current 112,000 107,000
Accrued liabilities 78,000 73,000
Notes payable, net of current portion $ 351,000 $ 441,000