Nature of Business - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage of distribution of ordinary taxable income	90.00%
Taxable Reit Subsidiary [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deferred Tax Assets, Net	$ 0.5	$ 0.5
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	2.9	2.9
Deferred Tax Liabilities, Net	$ 0.4	$ 0.4