Share-based Compensation (Schedule Of Restricted Stock Award And Restricted Stock Unit Activity) (Details) shares in Thousands	6 Months Ended
Jun. 30, 2019 $ / shares shares
Restricted Stock Awards
Shares
Unvested beginning balance (shares) \| shares	6
Granted (shares) \| shares	12
Vested (shares) \| shares	(8)
Forfeited (shares) \| shares	0
Unvested ending balance (shares) \| shares	10
Weighted Average Grant Date Fair Value
Weighted average grant date fair value beginning balance (in dollars per share) \| $ / shares	$ 18.61
Weighted average grant date fair value of granted (in dollars per share) \| $ / shares	20.53
Weighted average grant date fair value of vested (in dollars per share) \| $ / shares	20.08
Weighted average grant date fair value of forfeited (in dollars per share) \| $ / shares	0
Weighted average grant date fair value ending balance (in dollars per share) \| $ / shares	$ 19.64
Restricted Stock Units
Shares
Unvested beginning balance (shares) \| shares	2,752
Granted (shares) \| shares	769
Vested (shares) \| shares	(950)
Forfeited (shares) \| shares	(563)
Unvested ending balance (shares) \| shares	2,008
Weighted Average Grant Date Fair Value
Weighted average grant date fair value beginning balance (in dollars per share) \| $ / shares	$ 11.58
Weighted average grant date fair value of granted (in dollars per share) \| $ / shares	25.36
Weighted average grant date fair value of vested (in dollars per share) \| $ / shares	9.65
Weighted average grant date fair value of forfeited (in dollars per share) \| $ / shares	11.06
Weighted average grant date fair value ending balance (in dollars per share) \| $ / shares	$ 14.43

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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 (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(3)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ 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 (c)(2)(i)-(ii)
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 2
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+ References

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 2
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