Compensation Related Costs Share Based Payments Disclosure [Line Items]

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Effective Date

+ References

No definition available.

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- Definition

Termination, Period

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No definition available.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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- Definition

Net number of non-option equity instruments granted to participants.

+ References

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

+ References

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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SHARE-BASED COMPENSATION Stock Options Narrative (Detail) - USD ($)		1 Months Ended		9 Months Ended	12 Months Ended
	Aug. 15, 2012	Aug. 31, 2016	Jul. 31, 2016	Sep. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Maximum shares available for issuance					4,180,000
Options granted in the period (shares)					0	0	0
Options exchanged					79,124	321,550	1,014,117
Modification charge		$ 0	$ 100,000
Stock Incentive Plan 2013
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share based compensation arrangement award effective date	Jan. 01, 2013
Maximum shares available for issuance					4,180,000
Performance Shares
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Stock awards, vesting period					3 years	3 years
Options granted in the period (shares)					270,000	600,000	1,070,000
Rights to receive Long-term Incentive Shares					229,646	17,557
Fair value assumptions, expected term		2 years 2 months 12 days				3 years
Restricted Stock
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Stock awards, vesting period						3 years
Rights to receive Long-term Incentive Shares						281,201	184,791
Units issued through the July 2016 stock option exchange program			130,265
Stock Options
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Stock option, term					10 years
Maximum termination period of stock option awards after employee is terminated by Company					90 days
Options exchanged		178,900	390,570
Stock Options \| Minimum
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Stock awards, vesting period					3 years
Stock Options \| Maximum
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Stock awards, vesting period					5 years
August 2016 Option Exchange \| Performance Shares
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Options granted in the period (shares)							59,636
Rights to receive Long-term Incentive Shares				59,636