Income Taxes (Income Tax Benefit (Expense) Reconciliation) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Loss carryforwards increase (decrease)	$ 0	$ 0	$ (2,019,000)
Built-in gain tax liability	41,000	0	134,000
Built-in gain tax liability	(41,000)	0	1,885,000
Total tax expense	$ 0	$ 0	$ 0