Share based compensation arrangement by share based payment award allocation amounts percentage.

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ 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 (i)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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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.

+ 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)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&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=109197908&loc=d3e5070-113901

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ 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)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested 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)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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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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- 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).

+ 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=109197908&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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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- Definition

Percentage of vesting of share-based compensation awards.

+ 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)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions								3 Months Ended
	Mar. 11, 2019	Mar. 11, 2019	Feb. 28, 2019	Jul. 23, 2018	May 07, 2018	Apr. 30, 2018	Feb. 22, 2018	Mar. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock based compensation related to all stock-based awards								$ 29.6
Weighted average period, expense to recognize								2 years 3 months
Chief Executive Officer \| Performance metric based on Company's TSR
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocation of RSU's to performance metrics (percent)			30.00%
Chief Executive Officer \| Performance metric based on Company's earnings per share
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocation of RSU's to performance metrics (percent)			70.00%
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units, granted (shares)								1,593,747
Fair value of RSUs (in dollars per share)								$ 12.45	$ 11.05
RSUs that vested in period (shares)								795,528
Restricted Stock Units (RSUs) \| Performance-based RSUs \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (percent)			0.00%				0.00%
Restricted Stock Units (RSUs) \| Performance-based RSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights (percent)			100.00%				100.00%
Restricted Stock Units (RSUs) \| Employees and Officers \| Time-vested RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units, granted (shares)	3,025		990,723		4,258		633,107
Restricted stock units, vesting period		3 years					3 years
Closing stock price on date of grant (in dollars per share)	$ 13.22	$ 13.22	$ 12.60		$ 17.61		$ 16.94
Restricted Stock Units (RSUs) \| Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units, granted (shares)			247,619				184,179
Restricted Stock Units (RSUs) \| President
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units, granted (shares)			238,095				177,095
Restricted Stock Units (RSUs) \| Chief Financial Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units, granted (shares)			114,285				85,005
Restricted Stock Units (RSUs) \| Non-employee Members on Board of Directors \| Time-vested RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units, granted (shares)				6,677		40,910
Closing stock price on date of grant (in dollars per share)				$ 16.37		$ 17.11
Restricted Stock Units (RSUs) \| Employees Officers And Directors \| Performance-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing stock price on date of grant (in dollars per share)			$ 12.60				$ 16.94
Fair value of RSUs (in dollars per share)			$ 8.16				$ 10.97
2013 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock (shares)								11,727,833
Shares available for future grant (shares)								5,886,605