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Cash and Cash Equivalents
3 Months Ended
Mar. 31, 2015
Cash and Cash Equivalents [Abstract]  
Cash and Cash Equivalents
Cash and Cash Equivalents

Cash equivalents are short-term, highly liquid investments with insignificant interest rate risk and original maturities of three months or less at acquisition. At March 31, 2015, restricted and designated cash and investments totaled $29.2 million and $18.2 million was included in other current assets and $11.0 million was included in other non-current assets in the consolidated balance sheets. Restricted and designated cash and investments totaled $12.6 million at December 31, 2014, all of which was included in other non-current assets in the consolidated balance sheets.  The restricted funds represent deposits required by state agencies for self-insurance purposes and designated funds that are earmarked for a specific purpose and not for general business use.