The number of anniversaries of the grant date upon which RSUs will vest in pro rata installments.

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- Definition

The maximum payout percentage at the end of the performance period based on the target award.

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Performance Adjustment to Shares

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Performance Adjustment to Shares, Weighted Average Grant Date Fair Value

+ References

No definition available.

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- Definition

The holding period after the vesting of performance RSUs that were granted to executive officers after which the vested awards will be convertible into shares.

+ References

No definition available.

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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)(1)
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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

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- Definition

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

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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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- 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.

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-Publisher FASB
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-Topic 718
-SubTopic 10
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-Paragraph 2
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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).

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-Publisher FASB
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-Paragraph 2
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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).

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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.

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-Publisher FASB
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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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.

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Note 17 - Share-Based Compensation and Other Benefit Programs - RSUs (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) anniversary $ / shares shares	Dec. 31, 2019 USD ($) anniversary $ / shares shares	Dec. 31, 2018 USD ($) anniversary $ / shares
Performance-based RSUs (Equity settled)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested, Beginning of Period, Number of Shares \| shares	2,375,005
Unvested, Beginning of Period, Weighted Average Grant-Date Fair Value Per Share	$ 15.84
Granted, Number of Shares \| shares	839,330
Granted, Weighted Average Grant-Date Fair Value Per Share	$ 11.91
Share-based Compensation Arrangement by Share-based Payment Award, Performance Adjustment to Shares \| shares	168,749
Share-based Compensation Arrangement by Share-based Payment Award, Performance Adjustment to Shares, Weighted Average Grant Date Fair Value	$ 0
Vested, Number of Shares \| shares	(1,174,535)
Vested, Weighted Average Grant-Date Fair Value Per Share	$ 13.14
Forfeited, Number of Shares \| shares	(22,305)
Forfeited, Weighted Average Grant-Date Fair Value Per Share	$ 18.69
Unvested, End of Period, Number of Shares \| shares	2,186,244	2,375,005
Unvested, End of Period, Weighted Average Grant-Date Fair Value Per Share	$ 15.71	$ 15.84
Grants by Compensation Committee \| shares	839,330
Performance-based RSUs (Equity settled) \| 2020 Award Year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Fair Value of RSUs Vested \| $	$ 17.2
Award Requisite Service Period	3 years
Maximum Payout Percentage of Target Award	200.00%
Performance-based RSUs (Equity settled) \| 2019 Award Year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted, Weighted Average Grant-Date Fair Value Per Share		$ 21.45
Fair Value of RSUs Vested \| $		$ 10.6
Award Requisite Service Period		3 years
Maximum Payout Percentage of Target Award		200.00%
Performance-based RSUs (Equity settled) \| 2018 Award Year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted, Weighted Average Grant-Date Fair Value Per Share			$ 15.07
Fair Value of RSUs Vested \| $			$ 0.2
Award Requisite Service Period			3 years
Maximum Payout Percentage of Target Award			200.00%
Timed-vested RSUs (Equity settled)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested, Beginning of Period, Number of Shares \| shares	1,869,740
Unvested, Beginning of Period, Weighted Average Grant-Date Fair Value Per Share	$ 13.82
Granted, Number of Shares \| shares	763,608
Granted, Weighted Average Grant-Date Fair Value Per Share	$ 13.49
Share-based Compensation Arrangement by Share-based Payment Award, Performance Adjustment to Shares \| shares	0
Share-based Compensation Arrangement by Share-based Payment Award, Performance Adjustment to Shares, Weighted Average Grant Date Fair Value	$ 0
Vested, Number of Shares \| shares	(501,283)
Vested, Weighted Average Grant-Date Fair Value Per Share	$ 15.98
Forfeited, Number of Shares \| shares	(13,180)
Forfeited, Weighted Average Grant-Date Fair Value Per Share	$ 17.61
Unvested, End of Period, Number of Shares \| shares	2,118,885	1,869,740
Unvested, End of Period, Weighted Average Grant-Date Fair Value Per Share	$ 13.16	$ 13.82
Grants by Compensation Committee \| shares	763,608
Timed-vested RSUs (Equity settled) \| 2020 Award Year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Fair Value of RSUs Vested \| $	$ 7.6
Number of Anniversaries of the Grant Date \| anniversary	3
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Timed-vested RSUs (Equity settled) \| 2019 Award Year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted, Weighted Average Grant-Date Fair Value Per Share		$ 22.76
Fair Value of RSUs Vested \| $		$ 10.9
Number of Anniversaries of the Grant Date \| anniversary		3
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		3 years
Timed-vested RSUs (Equity settled) \| 2018 Award Year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted, Weighted Average Grant-Date Fair Value Per Share			$ 16.24
Fair Value of RSUs Vested \| $			$ 4.2
Number of Anniversaries of the Grant Date \| anniversary			3
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			3 years
Minimum \| Performance-based RSUs (Equity settled) \| 2020 Award Year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Maximum Payout Percentage of Target Award	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Post-Vesting Holding Period	1 year
Minimum \| Performance-based RSUs (Equity settled) \| 2019 Award Year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Post-Vesting Holding Period		1 year
Minimum \| Performance-based RSUs (Equity settled) \| 2018 Award Year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Post-Vesting Holding Period			1 year
Minimum \| Timed-vested RSUs (Equity settled) \| 2020 Award Year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	1 year
Minimum \| Timed-vested RSUs (Equity settled) \| 2019 Award Year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		1 year
Minimum \| Timed-vested RSUs (Equity settled) \| 2018 Award Year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			1 year