Quarterly report pursuant to Section 13 or 15(d)

Non-Controlling Interest - Analysis of Controlling and Non-Controlling Interest (Detail)

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Non-Controlling Interest - Analysis of Controlling and Non-Controlling Interest (Detail) (USD $)
In Thousands, unless otherwise specified
 2 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2014
Noncontrolling Interest [Line Items]      
Beginning Balance $ 168,266   $ 150,624
Net income (loss) attributable to interest holders (5,113)   5,688
Issuance of common stock     70,379
Redemption of OP units   (100) (1,621)
Repurchase of common stock     (205)
Equity-based compensation     1,970
Distributions     (8,786)
Change in accumulated other comprehensive income 95   2,238
Tax basis difference on contributed asset     1,857
Total Non-Controlling Interest and Equity before adjustments   222,144 222,144
Less Non-Controlling Interest Redeemable for cash   (4,918) (4,918)
Ending Balance 163,248 217,226 217,226
Controlling Interest [Member]
      
Noncontrolling Interest [Line Items]      
Beginning Balance 168,266   146,525
Establishment of non-controlling interest during formation transaction (4,649)    
Net income (loss) attributable to interest holders (4,972)   5,581
Issuance of common stock     70,379
Redemption of OP units     (557)
Repurchase of common stock     (205)
Equity-based compensation     1,938
Distributions     (8,634)
Change in accumulated other comprehensive income 92   2,196
Tax basis difference on contributed asset     1,818
Redemption value change for non-controlling interest redeemable for cash     (1,815)
Total Non-Controlling Interest and Equity before adjustments   217,226 217,226
Ending Balance 158,737 217,226 217,226
Non-Controlling Interest Holders [Member]
      
Noncontrolling Interest [Line Items]      
Beginning Balance     4,099
Establishment of non-controlling interest during formation transaction 4,649    
Net income (loss) attributable to interest holders (141)   107
Redemption of OP units     (1,064)
Equity-based compensation     32
Distributions     (152)
Change in accumulated other comprehensive income 3   42
Tax basis difference on contributed asset     39
Redemption value change for non-controlling interest redeemable for cash     1,815
Total Non-Controlling Interest and Equity before adjustments   4,918 4,918
Less Non-Controlling Interest Redeemable for cash   (4,918) (4,918)
Ending Balance $ 4,511