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Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other Comprehensive Income Loss Reclassification Adjustment $ (118) $ 233 $ (236) $ 180
Interest Expense [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other Comprehensive Income Loss Reclassification Adjustment     (300)  
Equity in Net Income of Joint Ventures [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other Comprehensive Income Loss Reclassification Adjustment     $ 100