Income Taxes (Narrative) (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Income tax examination, penalties and interest accrued	$ 0	$ 0
MARYLAND [Member]
Operating loss carryforwards	45,500,000
Deferred tax assets, operating loss carryforwards, state and local	3,000,000.0
Operating loss carryforward, valuation allowance	$ 3,000,000.0	$ 2,700,000

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319

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The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.

+ References

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