Allocated Share-based Compensation Expense Increase (Decrease)

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award, Options, Expiration Term

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- Definition

Sharebased compensation arrangement by sharebased payment award percentage of initial grant amount.

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- Definition

Amount, after tax, of expense for award under share-based payment arrangement.

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No definition available.

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- Definition

Aggregate number of common shares reserved for future issuance.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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- Definition

Number of shares issued pursuant to the terms of a deferred compensation arrangement.

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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

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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- Definition

Amount of cash inflow from exercise of option under share-based payment arrangement.

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- Definition

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.

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

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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

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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

Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options.

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No definition available.

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Share-Based Compensation - Narrative (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	May 17, 2019	May 18, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, net of tax	$ 11,300	$ 11,400	$ 9,500
Tax impact to share-based compensation expense	2,600	2,500	2,200
Proceeds from the exercise of stock options	6,399	78	2,424
Aggregate intrinsic value	$ 21,900
Weighted average remaining contractual terms	9 months 29 days
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period of options, years	10 years
Proceeds from the exercise of stock options	$ 6,400
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share units granted to employees (in shares)	20,000
Total fair value of shares vested	$ 10,900	$ 3,600	$ 6,700
Restricted stock awards \| Board Of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock to members (in shares)	20,096	78,336	23,447
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share units granted to employees (in shares)	184,843	360,153	192,214
Restricted stock units \| Cliff Vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining recognition period	3 years	3 years	3 years
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining recognition period	3 years
Share units granted to employees (in shares)	132,150	358,316	137,508
Aggregate intrinsic value	$ 25,494
Weighted average remaining contractual terms	1 year 1 month 2 days
Total fair value of shares vested	$ 3,700		$ 2,400
Increase in compensation cost	$ 2,900
Performance stock units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of number of shares of common stock to initial grant value to be issued when performance shares units vest	0.00%
Performance stock units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of number of shares of common stock to initial grant value to be issued when performance shares units vest	200.00%
2016 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)					2,975,296
Common stock available for issuance (in shares)	2,007,236	1,804,184
Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)				150,000
Common stock available for issuance (in shares)	97,039