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Condensed Consolidated Balance Sheets (Parentheticals) (USD $)
Sep. 30, 2011
Dec. 31, 2010
Allowance for doubtful accounts (in Dollars)$ 93,000$ 96,000
Reserve for obsolescence (in Dollars)$ 4,162,000$ 3,700,000
Preferred stock, par value (in Dollars per share)$ 0.001$ 0.001
Preferred stock, shares authorized5,000,0005,000,000
Preferred stock, shares issued00
Preferred stock, shares outstanding00
Common Class A [Member]
  
Common stock par value (in Dollars per share)$ 0.001$ 0.001
Common stock, shares authorized20,000,00020,000,000
Common stock, shares issued4,777,1444,777,144
Common stock, shares outstanding4,777,1444,777,144
Common Class B [Member]
  
Common stock par value (in Dollars per share)$ 0.001$ 0.001
Common stock, shares authorized762,612762,612
Common stock, shares issued762,612762,612
Common stock, shares outstanding762,612762,612