Quarterly report pursuant to Section 13 or 15(d)

Nature of Business - Narrative (Details)

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Nature of Business - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Percentage of distribution of ordinary taxable income 90.00%  
Deferred tax liabilities, net $ 0.6 $ 0.6
Taxable Reit Subsidiary [Member]    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Deferred Tax Assets, Net of Valuation Allowance $ 0.0 $ 0.0