Concentration of Credit Risk

9 Months Ended

Sep. 30, 2012

Concentration of Credit Risk [Abstract]

Concentration of Credit Risk

Concentration of Credit Risk

Financial instruments that subject the Company to credit risk consist of cash and cash equivalents, marketable securities and accounts receivable. The Company maintains the majority of its cash, cash equivalents and marketable securities balances with major financial institutions that the Company believes are of high credit standing.

Concentrations of credit risk with respect to accounts receivable are primarily limited to certain customers to which the Company makes substantial sales. The Company’s customer base consists of a large number of geographically dispersed customers diversified across several industries. To reduce risk, the Company routinely assesses the financial strength of its customers. Based on such assessments, the Company believes that its accounts receivable credit risk exposure is limited. As of September 30, 2012 and December 31, 2011, one customer accounted for 10% of the Company's accounts receivable. The Company believes that, at September 30, 2012, concentration of credit risk related to accounts receivable was not significant.