6. Investment in Financing Receivables

The components of investment in financing receivables as of March 31, 2013 and December 31, 2012, were as follows:

These financing receivables are typically collateralized contractually committed obligations of government entities or private high credit quality obligors and are often supported by additional forms of credit enhancement, including security interests and supplier guaranties. There were no credit losses during the three months ended March 31, 2013 and 2012, and no financing receivables were past due, on nonaccrual status, or impaired as of March 31, 2013 and December 31, 2012. Accordingly, management has concluded that no allowance for credit losses was necessary as of March 31, 2013 and December 31, 2012.