Income Taxes Reconciliation of Income Tax Attributable to Continuing Operations (Details) - Subsidiary of Common Parent - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investments, Owned, Federal Income Tax Note
Tax expense/(benefit) at U.S. statutory rates on TRS income subject to tax	$ 115	$ 2,177	$ 3,185
Valuation Allowance Change in Amount	127	(2,177)	(3,185)
Income tax expense/(benefit)	$ 242	$ 0	$ 0