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           Effects of Interest Rates Swaps Designated as Cash Flow Hedges (Detail) (Cash Flow Hedging, Interest Rate Swap, USD $) 
        In Thousands, unless otherwise specified  | 
        12 Months Ended | 
|---|---|
| 
           Dec. 31, 2013 
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           Cash Flow Hedging | Interest Rate Swap 
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| Derivative Instruments, Gain (Loss) [Line Items] | |
| Loss recognized in other comprehensive income (loss) - effective portion | $ (3,196) | 
| Amount reclassified from other comprehensive income (loss) into interest expense, net | $ 189 | 
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- Details 
          
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- Definition 
          The effective portion of gain reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The effective portion of losses on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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