Concentrations of Credit Risk and Major Customers	12 Months Ended
Concentrations of Credit Risk and Major Customers	Dec. 31, 2014
Concentrations of Credit Risk and Major Customers [Abstract]
Concentration of Credit Risk and Major Customers	Concentrations of Credit Risk and Major Customers Our major customers represent primarily the consumer goods, appliances, food products and automotive industries. Credit is granted to customers on an unsecured basis. Our five largest customers accounted for approximately 32%, 32%, and 39% of operating revenues for the years ended December 31, 2014, 2013 and 2012, respectively. Our five largest customers accounted for approximately 28% and 20% of gross accounts receivable as of December 31, 2014 and 2013, respectively. There was no single customer that accounted for more than 10% of operating revenues for the year ended December 31, 2014 and 2013. During the year ended December 31, 2012, one customer exceeded 10% of operating revenues.

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

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