Income Taxes (Narrative) (Details)	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019
Income Taxes [Line Items]
Estimated annual effective tax rate	23.70%	11.20%
Effective income tax rate continuing operations	22.40%	1.30%
Research and Development [Member]
Income Taxes [Line Items]
Effective income tax rate, federal statutory rate	21.00%
Effective income tax rate continuing operations	23.70%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.Fact.4)
-URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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- Definition

A ratio calculated by dividing the estimated amount of annual income tax expense attributable to continuing operations for the fiscal year by estimated annual GAAP basis pre-tax income from continuing operations.

+ References

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- Definition

Income taxes.

+ References

No definition available.

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