Stock-Based Compensation (Details)	9 Months Ended	12 Months Ended
Sep. 30, 2020 plan $ / shares shares	Dec. 31, 2019 day
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity compensation plans (plan) \| plan	2
Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of trading days (day) \| day		30
Average closing stock price (in dollar per share)	$ 33.57
Shares granted, weighted average grant date fair value (in dollars per share)	26.75
Long-Term Incentive Plan \| Time Vested Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted, weighted average grant date fair value (in dollars per share)	$ 26.75
Shares granted (in shares) \| shares	104,857
Shares vested (in shares) \| shares	77,397
Shares vested, weighted average grant date fair value (in dollars per share)	$ 34.31
Long-Term Incentive Plan \| Time Vested Stock Awards \| Non-employee Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period	1 year
Long-Term Incentive Plan \| Time Vested Stock Awards \| Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period	3 years
Long-Term Incentive Plan \| Performance Awards \| Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted, weighted average grant date fair value (in dollars per share)	$ 34.10
Shares granted (in shares) \| shares	79,788
Service period	2 years 9 months 18 days
Long-Term Incentive Plan \| Performance Awards \| Employees \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of potential target shares awarded	0.00%
Long-Term Incentive Plan \| Performance Awards \| Employees \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of potential target shares awarded	200.00%
Long-Term Incentive Plan \| Stock Options \| Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares exercised (in shares) \| shares	14,980
Shares exercised, weighted average exercise price (in dollars per share)	$ 20.42

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- Definition

This represents Average closing stock price.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award number of shares authorized average trading days.

+ References

No definition available.

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- Definition

The percentage of target shares, an employee can earn, under the plan.

+ 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.

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

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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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- 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.

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No definition available.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

+ References

No definition available.

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- Definition

Number of share options (or share units) exercised during the current period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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