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Credit Facilities and Restricted Cash - Letters of Credit and Restricted Cash (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 30, 2014
Dec. 31, 2013
CREDIT FACILITIES AND RESTRICTED CASH [Abstract]    
Guarantees and letters of credit outstanding $ 49,588  
Short-term restricted cash 14,926 18,798
Long-term restricted cash 34,589 32,718
Total secured by restricted cash $ 49,515