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Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Subsidiary
Income Taxes [Line Items]  
Number of subsidiaries as taxable REIT 2
Taxes Payable, Current $ 1.4
Deferred tax assets, net 3.6
Valuation Allowances and Reserves, Balance $ 3.6
Minimum [Member]
 
Income Taxes [Line Items]  
Percentage of taxable income 90.00%
Maximum [Member]
 
Income Taxes [Line Items]  
Percentage of taxable income 100.00%