Percentage of restricted stock granted to issue additional common stock.

No definition available.

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- Definition

Share based compensation arrangement by share based payment award performance period.

+ References

No definition available.

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- Definition

Share based compensation, common stock issued based on performance stock units.

+ References

No definition available.

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- Definition

Share based compensation, shares issued based on percentage of performance achieved.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: 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.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-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.

+ Details

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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

Gross number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

+ References

No definition available.

+ Details

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Share-based Compensation - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Jul. 01, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense recognized		$ 8.1	$ 1.9	$ 12.2	$ 5.5
Shares issued under stock purchase plan, stock option exercises and restricted stock		181,235	43,326	710,026	271,166
Performance Based [Member] \| Maximum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Percentage of restricted stock granted to issue additional common stock				50.00%
Market-Based Performance Share [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Common stock issued based on performance stock units	1
Percentage of performance to be achieved	100.00%
Performance period	3 years
Market-Based Performance Share [Member] \| Maximum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Percentage of performance to be achieved	200.00%
Market-Based Performance Share [Member] \| Minimum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Percentage of performance to be achieved	50.00%
June 30, 2014 Grant Date [Member] \| Performance Based [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense recognized		$ 2.7
Non-vested shares		99,600
June 30, 2015 to August 5, 2015 Grant Date [Member] \| Performance Based [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense recognized		$ 2.4
Non-vested shares		110,660
July 1, 2016 Grant Date [Member] \| Market-Based Performance Share [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Non-vested shares		96,245
July 1, 2016 Grant Date [Member] \| Contingent Performance Units [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense recognized		$ 0.5