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Schedule III - Change in Accumulated Depreciation (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Change in accumulated depreciation      
Balance, beginning of period $ (2,132) $ (21)  
Depreciation (60,254) (2,111) (21)
Dispositions 184    
Balance, end of period $ (62,202) $ (2,132) $ (21)