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Commitments and Contingencies
 9 Months Ended
Sep. 29, 2012
Commitments and Contingencies [Abstract]  
Commitments and Contingencies
11.
Commitments and Contingencies
 
Legal  Proceedings
 
During the first nine months of fiscal 2012, there were no material changes to our previously disclosed legal proceedings. Additionally, we are, and from time to time may be, a party to routine legal proceedings incidental to the operation of our business. The outcome of any pending or threatened proceedings is not expected to have a material adverse effect on our financial condition, operating results or cash flows, based on our current understanding of the relevant facts. Legal expenses incurred related to these contingencies are generally expensed as incurred.
 
Environmental and Legal Matters
 
From time to time, we are involved in various proceedings incidental to our businesses and we are subject to a variety of environmental and pollution control laws and regulations in all jurisdictions in which we operate. Although the ultimate outcome of these proceedings cannot be determined with certainty, based on presently available information management believes that adequate reserves have been established for probable losses with respect thereto. Management further believes that the ultimate outcome of these matters could be material to operating results in any given quarter but will not have a materially adverse effect on our long-term financial condition, our results of operations, or our cash flows.
 
Collective Bargaining Agreements
 
As of September 29, 2012, approximately 32% of our total work force is covered by collective bargaining agreements. Collective bargaining agreements representing approximately 11% of our work force have expired or will expire within one year.