Income Taxes - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Impairment of Real Estate	$ 1,107	$ 1,267
Other - Temporary Differences	584	233
Valuation Allowance	(840)	(984)
Total Deferred Income Tax Assets, Net of Allowance	851	516
Straight-line Rent	(39)	(40)
Basis Difference - Real Estate Properties	(424)	(488)
Other - Temporary Differences	(192)	(172)
Total Deferred Income Tax Liabilities	(655)	(700)
Total Net Deferred Income Tax Assets	$ 196
Total Net Deferred Income Tax Liabilities		$ (184)