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Debt (Tables)
3 Months Ended
Mar. 31, 2013
Table Text Block Supplemental [Abstract]  
Schedule of Debt [Table Text Block]
Debt consists of the following at:
 
March 31,
2013
 
December 31,
2012
Capex loan payable to a bank, interest at a variable rate (1.95% and 1.96% at March 31, 2013 and December 31, 2012, respectively) with monthly payments of interest and principal through May 2016
$
5,428,000

 
$
5,857,000

Mexican loan payable to a bank, interest at a variable rate (1.94% at March 31, 2013 and December 31, 2012) with annual principal and monthly interest payments through January 2014
1,600,000

 
3,200,000

Industrial Development Revenue Bond, interest adjustable weekly (0.30% at March 31, 2013 and December 31, 2012), payable quarterly, principal and interest due in variable quarterly installments through April 2013, secured by a bank letter of credit
210,000

 
420,000

Revolving Line of Credit

 

Mexican Expansion Revolving loan

 

Total
7,238,000

 
9,477,000

Less current portion
(3,524,000
)
 
(3,734,000
)
Long-term debt
$
3,714,000

 
$
5,743,000