Income Taxes (Income Tax Benefit (Expense) Reconciliation) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Loss carryforwards increase (decrease)	$ 0	$ (2,019,000)	$ 55,000
Built-in gain tax liability	0	134,000	22,000
Built-in gain tax liability	0	1,885,000	(77,000)
Total tax expense	$ 0	$ 0	$ 0