CUSTOMER RECEIVABLES, NET

12 Months Ended

Dec. 31, 2012

CUSTOMER RECEIVABLES, NET

CUSTOMER RECEIVABLES, NET

5. CUSTOMER RECEIVABLES, NET

        Customer receivables are presented net of an allowance for doubtful accounts of $5.5 million and $4.2 million at December 31, 2012 and 2011, respectively. Management performs ongoing credit evaluations of its clients and generally does not require collateral. As of December 31, 2012 and 2011, the U.S. government and agencies thereof, represented approximately 11.3% and 18.8%, respectively, of gross customer receivables.