Income Taxes (Narrative) (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Income tax examination, penalties and interest accrued	$ 0	$ 0
MARYLAND [Member]
Operating loss carryforwards	39,100,000
Deferred tax assets, operating loss carryforwards, state and local	2,800,000
Operating loss carryforward, valuation allowance	$ 2,800,000	$ 2,900,000