Short-Term Investments

6 Months Ended

Jun. 24, 2012

Short-term Investments [Abstract]

Cash, Cash Equivalents, and Short-term Investments [Text Block]

Short-Term Investments

The company's short-term investments include certificates of deposit and fixed deposits whose original maturity is greater than three months and is one year or less. Certificates of deposit and fixed deposits whose original maturity is three months or less are classified as cash equivalents and certificates of deposit and fixed deposits whose maturity is greater than one year at the balance sheet date are classified as non-current assets in our condensed consolidated balance sheet. The purchase of any certificate of deposit or fixed deposit that is classified as a short-term investment or non-current asset appear in the investing section of our condensed consolidated statement of cash flows.

Restricted Deposits

We purchase certificates of deposit with maturity dates that expire within twelve months that are used to secure our workers’ compensation obligations and collateralize letters of credit securing our forward natural gas contracts in Mexico.  At June 24, 2012 and December 25, 2011, certificates of deposit totaling $4.8 million and $5.1 million, respectively, which were restricted in use, were classified as short-term investments on our condensed consolidated balance sheets.