Income Taxes (Summary of Operating Loss Carryforwards and Tax Credit Carryforwards) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
Net deferred tax asset, net operating loss	$ 1,519	$ 990
Total net deferred tax asset	1,519	990
Total valuation allowance	1,023	990
Foreign tax authority
Operating Loss Carryforwards [Line Items]
Net deferred tax asset, net operating loss	496
Valuation allowance, net operating loss	0
State and local jurisdiction
Operating Loss Carryforwards [Line Items]
Net deferred tax asset, net operating loss	1,023	990
Valuation allowance, net operating loss	$ 1,023	$ 990