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Income Taxes - Additional Information (Details) - USD ($)
1 Months Ended 12 Months Ended
Jan. 15, 2016
Dec. 31, 2014
Dec. 31, 2015
Income Taxes [Line Items]      
Minimum percentage of taxable income distributed to shareholders     90.00%
Income tax expense   $ 505,000 $ 2,566,000
Cash dividend   $ 0.039  
Return on capital     89.20%
Ordinary dividend rate     10.80%
Return Of Capital      
Income Taxes [Line Items]      
Cash dividend     $ 0.289
Ordinary Dividend      
Income Taxes [Line Items]      
Cash dividend     $ 0.035
Subsequent Event [Member]      
Income Taxes [Line Items]      
Cash dividend $ 0.095    
Taxable REIT Subsidiaries [Member]      
Income Taxes [Line Items]      
Income tax expense   $ 189,000 $ 2,545,000