Contingently issuable shares.

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options granted and deferred in period.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options granted and issued excluding deferred in period.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options withheld for taxes in period.

+ References

No definition available.

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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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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

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 additional shares authorized for issuance under share-based payment arrangement.

+ References

No definition available.

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- Definition

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

+ 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
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Stockholders' Equity (Deficit) -Share-based Compensation and Summary of Changes in Common Shares Available for Awards under Omnibus Incentive Plan and Predecessor Plans (Detail) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 22, 2014
Shares
Contingently issuable shares (in shares)	1,300,000
2014 Omnibus Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
The maximum number of shares of Common Stock authorized (in shares)				4,250,000
Shares
Newly Registered Shares under Omnibus Incentive Plan (in shares)	0	0	2,199,114
Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Number of shares available, beginning of year (in shares)	4,048,509	4,489,347	3,668,954
Restricted stock shares issued for new awards (in shares)	0	0	(571,438)
Shares withheld for taxes (in shares)	279,509	249,368	94,624
Number of shares available, end of year (in shares)	3,183,310	4,048,509	4,489,347
2002 Directors Stock Plan
Shares
Director shares granted and issued (in shares)	(20,835)	(22,015)	(10,560)
Director units granted and deferred (in shares)	(22,826)	(6,262)	(16,505)
Restricted stock
Shares
Restricted stock shares forfeited (in shares)	15,271	110,984	86,518
Restricted stock \| Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Restricted stock shares forfeited (in shares)	15,271	105,960	91,542
Restricted stock units \| Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Restricted stock shares issued for new awards (in shares)	(1,014,667)	(819,808)	(219,923)
Restricted stock shares forfeited (in shares)	105,832	96,534	64,122
Shares issued for 2014 Special PSU Awards \| Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Restricted stock shares issued for new awards (in shares)	0	0	(658,783)
Shares issued for 2015 Three-Year PSU Awards \| Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Restricted stock shares issued for new awards (in shares)	0	0	(129,139)
Shares issued for 2017 Three-Year PSU Awards \| Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Restricted stock shares issued for new awards (in shares)	(133,752)	0	0
Restricted Stock Units RSU SLO Awards \| Omnibus Incentive Plan and 2005 Contingent Stock Plan
Shares
Restricted stock shares issued for new awards (in shares)	(73,731)	(46,195)	(23,478)