Share-based Compensation Arrangement by Share-based Payment Award, Performance Period

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- Definition

Vesting period of time-based restricted stock, higher limit

+ References

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- Definition

Vesting period of time-based restricted stock, lower limit

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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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.

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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

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

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Percentage of vesting of award under share-based payment arrangement.

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Stock-Based Compensation (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted shares (shares)	1,436,957		1,513,197
Vesting period of time-based restricted stock, lower limit		3 years
Vesting period of time-based restricted stock, higher limit		4 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance vesting percentage	0.00%
Performance Target 1 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance vesting percentage	150.00%
Performance Target 2 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance vesting percentage	200.00%
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 6.5	$ 5.8
Restricted Stock Awards And Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share based compensation expense	$ 54.3
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted shares (shares)	338,836
Performance period	3 years
PacWest 2003 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (shares)	4,000,000
Number of shares available for grant (shares)	2,343,255
PacWest 2003 Stock Incentive Plan \| Time-Based Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted shares (shares)	1,436,957