(4)    Restricted Cash and Investments

At September 30, 2014 and June 30, 2014, we held $8.0 million and $8.5 million respectively, of restricted cash and investments in lieu of providing letters of credit for the benefit of the provider of our workmen’s compensation insurance and other insurance. These funds can be invested in high quality money market mutual funds, U.S. Treasuries and U.S. Government agency fixed income instruments, and cannot be withdrawn without the prior written consent of the secured party. These assets are carried at cost, which approximates market value and are classified as long-term assets because they are not expected to be used within one year to fund operations. See also Note 12, “Fair Value Measurements".