Annual report pursuant to Section 13 and 15(d)

Derivative Financial Instruments (Details Textual)

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Derivative Financial Instruments (Details Textual) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Derivative Financial Instruments (Textual) [Abstract]    
Fair value of interest rate derivative liabilities $ 218,000 $ 393,000
Industrial Revenue Bond [Member]
   
Derivative Financial Instruments (Textual) [Abstract]    
Notional amount of interest rate swap 1,900,000  
Interest of interest rate swap 3.99%  
Derivative, variable rate basis 3.99% plus a spread based on the Company’s leverage ratio  
Derivative, date inception Feb. 06, 2006  
Derivative, date maturity Feb. 01, 2016  
Term Note [Member]
   
Derivative Financial Instruments (Textual) [Abstract]    
Notional amount of interest rate swap 5,000,000  
Interest of interest rate swap 2.115%  
Derivative, variable rate basis 2.115% plus a spread based on the Company’s leverage ratio  
Derivative, date inception Oct. 01, 2009  
Derivative, date maturity Jan. 30, 2014  
Fair value of interest rate derivative liabilities $ 200,000 $ 400,000