Annual report pursuant to Section 13 and 15(d)

Concentrations (Notes)

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Concentrations (Notes)
 12 Months Ended
Dec. 31, 2013
Risks and Uncertainties [Abstract]  
Concentrations
Concentrations

Concentrations of Credit and Business Risk

Financial instruments that potentially subject the Company to a concentration of credit risk consist of cash and cash equivalents and accounts receivable.

At December 31, 2013 and 2012, the Company's cash and cash equivalents were maintained primarily with major U.S. financial institutions and foreign banks. Deposits with these institutions at times exceed the federally insured limits, which potentially subjects the Company to concentration of credit risk. The Company has not experienced any losses related to these balances and believes that there is minimal risk.

A substantial portion of the Company's revenue is generated through arrangements with one airline customer. The Company may not be successful in renewing these agreements, or if they are renewed, they may not be on terms as favorable as current agreements. The percentage of revenue generated through the customer representing more than 10% of consolidated revenue is as follows:

 
Year ended December 31,
 
2013
 
2012
 
2011
Southwest Airlines
22
%
 
85
%
 
62
%


No other customer accounted for revenues greater than 10% for the 3 years presented.