Income Taxes (Net Deferred Income Tax Asset) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Net operating loss carryforward	$ 3,899	$ 3,899
Valuation allowance	(3,858)	(3,858)
Total deferred tax assets	41	41
Deferred tax liabilities:
Built-in gain	(41)	(41)
Total deferred tax liabilities	(41)	(41)
Net deferred tax asset	$ 0	$ 0