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

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

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

+ 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)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

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- Definition

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

+ References

+ Details

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ 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

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

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Employee Stock Compensation - Schedule of Number of Stock-Based Awards Granted and Outstanding (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options granted		10,000	783,700	986,900
Stock options outstanding	5,934,854		5,934,854		6,647,999
Stock Appreciation Rights Granted [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity Instruments Other than Options, Grants	15,200		40,400	176,200
Equity Instruments Other than Options, Outstanding	512,876		512,876		530,701
Restricted Stock Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity Instruments Other than Options, Grants	86,356		86,356
Equity Instruments Other than Options, Outstanding	86,356		86,356
Restricted Stock Units Granted [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity Instruments Other than Options, Grants	120,845	2,553	494,681	239,763
Equity Instruments Other than Options, Outstanding	777,331		777,331		359,553
Performance Units Granted [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity Instruments Other than Options, Grants			119,839	51,977
Equity Instruments Other than Options, Outstanding	164,886		164,886		49,667