Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Income Tax Expense (Benefit)	$ 873,000	$ 1,245,000	$ 660,000
Disqualification of REIT status	4 years
Deferred Tax Assets, Valuation Allowance Percentage	100.00%
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 534,200,000
Minimum [Member]
Operating Loss Carryforwards [Line Items]
Distribution % of annual taxable income to stockholders	90.00%
Maximum [Member]
Operating Loss Carryforwards [Line Items]
Distribution % of annual taxable income to stockholders	100.00%	100.00%
Subsidiaries [Member] | Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 254,800,000