Income Taxes , Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Ordinary Dividend Taxable, Percent		98.8276%
Minimum Percent of Income From Qualifying Sources to Allow For Real Estate Investment Trust Classification	95.00%
Operating Loss Carryforwards		$ 75,300,000
Operating Loss Carryforwards, After Tax		15,600,000
Deferred Tax Assets, Operating Loss Carryforwards		18,009,000	$ 18,071,000
Unrecognized Tax Benefits	$ 0		0
Unrecognized Tax Benefits, Period Increase (Decrease)		0
Required Minimum Percent of Taxable Income Distributed to Stock Holders	90.00%
Current		$ 919,000	701,000	$ 700,000
Tax Witholdings on Distributions from Investment				$ 200,000
Ordinary Tax Dividend, Percent Qualified Dividend		1.1724%
Federal
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards		$ 73,000,000.0
Deferred Tax Assets, Operating Loss Carryforwards		$ 15,300,000
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards			9,100,000
Deferred Tax Assets, Operating Loss Carryforwards			$ 2,400,000