The number of equal installments established for the restricted stock units vesting schedule.

No definition available.

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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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- Definition

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

+ References

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-Publisher FASB
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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
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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
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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).

+ References

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-Publisher FASB
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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
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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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- 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

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
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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 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.

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-Topic 718
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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

No definition available.

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Equity Plans - Restricted Stock Units - (Details) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2021 $ / shares shares	Dec. 31, 2021 USD ($) installment $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($)	Dec. 31, 2018 installment
Equity Plans
Restricted stock units vesting, number of equal installments \| installment		4
Restricted stock units
Number of Shares
Number of shares, Unvested, Beginning balance \| shares	244,545	244,545
Number of shares, Granted \| shares		302,250
Number of shares, Vested \| shares		(78,165)
Number of Shares, Forfeited \| shares		(62,658)
Number of shares, Unvested, Ending balance \| shares		405,972	244,545
Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Unvested, Beginning balance \| $ / shares	$ 9.31	$ 9.31
Weighted-Average Grant Date Fair Value, Granted \| $ / shares		24.40
Weighted-Average Grant Date Fair Value, Vested \| $ / shares		10.13
Weighted-Average Grant Date Fair Value, Forfeited \| $ / shares		18.65
Weighted-Average Grant Date Fair Value, Unvested, Ending balance \| $ / shares		$ 20.13	$ 9.31
Aggregate fair value of restricted stock units that vested \| $		$ 0.8	$ 1.2	$ 1.8
Performance Stock Units
Number of Shares
Number of shares, Granted \| shares	110,500	110,500
Number of Shares, Forfeited \| shares		(5,000)
Number of shares, Unvested, Ending balance \| shares		105,500
Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Granted \| $ / shares		$ 23.57
Weighted-Average Grant Date Fair Value, Forfeited \| $ / shares		23.57
Weighted-Average Grant Date Fair Value, Unvested, Ending balance \| $ / shares		$ 23.57
Aggregate fair value of restricted stock units that vested \| $		$ 2.5
2018 Inducement Plan
Equity Plans
Restricted stock units vesting, number of equal installments \| installment					3
Vesting period					18 months