Percentage Vesting On Second Anniversary

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- Definition

Percentage Vesting On Third Anniversary

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Options And Other Than Options Vested In Period Total Fair Value

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Percentage Multiplied To Target Award For Determining Number Of Shares Subject To Award

+ References

No definition available.

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- Definition

As of the balance sheet date, the total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of equity-based awards other than stock (or unit) option plans that vested during the period.

+ References

No definition available.

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- Definition

Vesting Number Of Installments

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ 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 (i)
-URI http://asc.fasb.org/extlink&oid=6415400&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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&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://www.xbrl.org/2003/role/presentationRef
-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=6415400&loc=d3e5070-113901

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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://www.xbrl.org/2003/role/presentationRef
-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=6415400&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

Number of additional shares authorized for issuance under an established share-based compensation plan.

+ References

No definition available.

+ Details

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

+ References

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- Definition

Period from grant date that an equity-based award expires, 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 (a)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

+ References

No definition available.

+ Details

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Share-Based Compensation - Additional Information (Detail)	1 Months Ended			12 Months Ended
	May. 31, 2015 Installment	May. 31, 2013 Installment	Jan. 31, 2013 shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) Installment $ / shares shares	Dec. 31, 2013 USD ($) $ / shares shares	May. 17, 2011 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in number of shares available under 2011 plan			1,800,000
Shares available for future grant under 2011 Plan							1,900,000
Total unrecognized compensation cost related to unvested share-based compensation \| $				$ 15,000,000	$ 23,100,000
Weighted average recognition period of total unrecognized compensation cost				1 year	1 year 6 months
Total fair value of shares vested \| $				$ 22,500,000	$ 14,600,000	$ 3,300,000
Vesting period				3 years
Stock options intrinsic value \| $				$ 0
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum shares of common stock that can be issued under 2011 plan				3,600,000
Expiration period				10 years
Executive Officers [Member] \| Positive Adjusted EBITDA for Prescribed Performance Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments that PRSUs will vest in installment \| Installment	3				3
Certain Executive Officers and Non Officer Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments that PRSUs will vest in installment \| Installment	3				3
PRSUs [Member] \| Company Relative Total Shareholder Return as Compared to Peer Companies [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of PRSUs vesting on third anniversary	100.00%				100.00%
PRSUs [Member] \| Contingent on Achievement of Certain Synergies Relating to Merger [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments that PRSUs will vest in installment \| Installment		3
Percentage of PRSUs vesting on second anniversary		50.00%
PRSUs [Member] \| Contingent on Achievement of Certain Synergies Relating to Merger [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage multiplier to determine number of shares to be awarded in connection with vesting of PRSUs		0.00%
PRSUs [Member] \| Contingent on Achievement of Certain Synergies Relating to Merger [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage multiplier to determine number of shares to be awarded in connection with vesting of PRSUs		200.00%
PRSUs [Member] \| Executive Officers [Member] \| Company Relative Total Shareholder Return as Compared to Peer Companies [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage multiplier to determine number of shares to be awarded in connection with vesting of PRSUs	0.00%				0.00%
PRSUs [Member] \| Executive Officers [Member] \| Company Relative Total Shareholder Return as Compared to Peer Companies [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage multiplier to determine number of shares to be awarded in connection with vesting of PRSUs	200.00%				200.00%
Restricted and Deferred Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, shares				519,852	447,608	450,169
Granted, Weighted Average Grant Date Fair Value \| $ / shares				$ 36.15	$ 44.38	$ 45.20
Total intrinsic value of share awards vested \| $				$ 17,800,000	$ 19,500,000	$ 6,100,000
Restricted stock surrendered in satisfaction of required minimum tax withholding obligations				226,945	163,404	36,846
Restricted and Deferred Stock Units [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				1 year
Restricted and Deferred Stock Units [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				3 years