Equity Compensation, Employment Agreements and Other Benefit Plans (Narrative) (Details) - Equity Compensation Plan	12 Months Ended
Dec. 31, 2020 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum shares authorized for grant (in shares)	18,000,000.0
Shares available for grant	14,300,000
Maximum number of common shares that can be granted to participant in any one year (in shares)	2,000,000.0
Period during which a participant can be awarded the maximum number of shares allowable under the Plan	1 year
Maximum percentage of common shares that can be owned or deemed to be owned by a participant (more than)	9.80%

The highest quantity of shares a participant can be awarded in any one year under the plan.

No definition available.

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- Definition

Represents the period during which an employee can be awarded the maximum number of shares allowable under the Plan.

+ References

No definition available.

+ Details

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- Definition

The maximum percentage of common shares that can be owned or deemed to be owned by a participant. If the maximum ownership or deemed ownership is attained no awards may be granted to that participant.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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