Commitments And Contingencies (Narrative) (Details)	6 Months Ended	12 Months Ended
Jun. 30, 2020 USD ($) claim	Dec. 31, 2019 USD ($)
Cotter, Jr. Related Litigation Matters [Member]
Commitments And Contingencies [Line Items]
Settlement awarded	$ 1,550,000
Legal fees		$ 10,000,000.0
Litigation expense	$ 75,000	$ 925,000
Employment Litigation [Member]
Commitments And Contingencies [Line Items]
Number of new claims filed \| claim	2

Commitments And Contingencies [Line Items]

No definition available.

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- Definition

The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

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- Definition

Amount awarded from other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

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- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

+ Details

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- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

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