Share-Based Compensation - Other Award Activity (Details) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
Dec. 31, 2018 item shares	Dec. 31, 2019 USD ($) $ / shares shares
Performance-based RSU
Weighted-Average Grant-Date Fair Value
Compensation Cost \| $		$ 4.2
Recognition period		2 years
2018 Stock Plan \| Performance Shares
Number of Restricted Stock Units
Granted (in shares)		375,000
Nonvested - End of period (in shares)		375,000
Weighted-Average Grant-Date Fair Value
Granted (in dollars per share) \| $ / shares		$ 15.43
Nonvested - End of period (in dollars per share) \| $ / shares		$ 15.43
2018 Stock Plan \| Stock Bonus Awards
Weighted-Average Grant-Date Fair Value
Shares issued under share-based compensation plan gross of shares withheld for the payment of taxes	39,614
Number of participants as stock bonus awards \| item	269
Share based compensation shares withheld for payment of taxes	8,061
Shares issued under share-based compensation plan (in shares)	31,553

Number of Participants as Stock Bonus Awards

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Number of shares issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), gross of shares withheld for payment of taxes.

+ References

No definition available.

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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.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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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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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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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.

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

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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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Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

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