Share-based Compensation Arrangement by Share-based Payment Award, Target Vesting Percentage

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- Definition

Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of cost to be recognized for option under share-based payment arrangement.

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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

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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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- 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.

+ References

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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

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

+ References

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Stock-Based Compensation Plan - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Jun. 30, 2014	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2018	Jun. 30, 2016	Dec. 31, 2006
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			$ 6,300,000	$ 5,300,000	$ 6,800,000
Income tax benefit from share-based compensation			1,600,000	$ 1,400,000	$ 1,700,000
Term of award				6 years 4 months 24 days	6 years 6 months
Exercised			$ 68,000	$ 1,000,000.0	$ 1,300,000
Grants in period (in USD per share)			$ 0	$ 3.37	$ 4.42
Unrecognized stock-based compensation on options			$ 2,200,000
Period for recognition of compensation expense			2 years 3 months 18 days
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			$ 1,100,000	$ 2,500,000	$ 2,900,000
Term of award			10 years
Share price (in USD per share)			$ 5.51	$ 3.74	$ 10.03
Stock Option \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			$ 800,000
Term of award			6 years 3 months 18 days
Unrecognized stock-based compensation on options			$ 4,000,000.0
Period for recognition of compensation expense			3 years 1 month 6 days
Granted (in USD per share)			$ 2.60	$ 0	$ 0
Stock Appreciation Rights (SARs) \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Stock Appreciation Rights (SARs) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of award			10 years
Restricted Share
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			$ 800,000	$ 2,500,000	$ 3,500,000
Unrecognized stock-based compensation on options			$ 1,000,000.0
Period for recognition of compensation expense			1 year 8 months 12 days
Granted (in USD per share)			$ 0	$ 9.37	$ 11.00
Equity instruments other than options, vested in period, fair value			$ 600,000	$ 3,000,000.0	$ 4,400,000
Restricted Share \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Restricted Share \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Restricted Share Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			$ 3,100,000	$ 700,000
Unrecognized stock-based compensation on options			$ 6,700,000
Period for recognition of compensation expense			2 years 7 months 6 days
Granted (in USD per share)			$ 3.62	$ 7.74	$ 0
Equity instruments other than options, vested in period, fair value			$ 800,000	$ 100,000	$ 0
Performance Share Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			500,000	$ (400,000)	$ 400,000
Unrecognized stock-based compensation on options			$ 1,500,000
Period for recognition of compensation expense			2 years 2 months 12 days
Granted (in USD per share)			$ 3.39	$ 7.36	$ 11.10
Performance Share Units (PSUs) \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target vesting percentage			0.00%
Performance Share Units (PSUs) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target vesting percentage			200.00%
2006 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)	2,900,000	1,035,000
Additional shares authorized (in shares)							10,750,000	7,850,000
2006 Stock Incentive Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized (in shares)						10,750,000
2006 Stock Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized (in shares)						11,785,000