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Concentrations of Credit Risk and Major Customers | 12 Months Ended
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Dec. 31, 2012
Concentrations of Credit Risk and Major Customers [Abstract] |
Concentration Risk Disclosure [Text Block] | Concentrations of Credit Risk and Major Customers The Company’s major customers represent primarily the consumer goods, appliances, food products and automotive industries. Credit is granted to customers on an unsecured basis. The Company’s five largest customers accounted for 39%, 38%, and 38% of total gross revenues for the years ended December 31, 2012, 2011 and 2010, respectively. The Company's five largest customers accounted for 31% and 32% of gross accounts receivable as of December 31, 2012 and 2011, respectively. Operating revenues from one customer exceeded 10% of total gross revenues in 2012, 2011, and 2010. Annual revenues for the account each year was $60.4 million, $69.3 million, and $62.9 million, for the years ended December 31, 2012, 2011, and 2010, respectively.

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