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Consolidated Balance Sheets [Parenthetical] (USD $)
Dec. 31, 2012
Dec. 31, 2011
Cash and cash equivalents $ 351,064 $ 338,523
Allowance for doubtful accounts 99,000 70,000
Prepaid expenses 1,525,092 1,345,223
Other current assets 820,619 427,471
Machinery and equipment 25,530,893 24,333,989
Due from related party 19,000 79,000
Trade payables 5,708,271 6,359,757
Notes Payable, current portion, net discount 107,000 0
Notes payable - current portion 354,342 362,927
Accrued liabilities 2,997,242 2,081,805
Notes Payable, net of current portion, net discount 555,000 0
Notes payable, net of current portion 7,839,351 3,932,032
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) 3,320,773 3,276,633
Common stock, shares outstanding (in shares) 3,248,646 3,137,348
Treasury stock, shares (in shares) 72,127 72,127
Variable Interest Entity, Primary Beneficiary [Member]
    
Cash and cash equivalents 22,000 11,000
Prepaid expenses 0 10,000
Other current assets 108,000 83,000
Machinery and equipment 701,000 550,000
Trade payables 66,000 0
Notes payable - current portion 101,000 91,000
Accrued liabilities 31,000 7,000
Notes payable, net of current portion $ 533,000 $ 687,000