Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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Earnings Per Share - Additional Information (Detail) - USD ($) $ in Millions	2 Months Ended	12 Months Ended
	Feb. 24, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Repurchase of additional common stock, shares		293,991
Repurchase of additional common stock, value		$ 11.6
Subsequent Event [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Repurchase of additional common stock, shares	417,078
Repurchase of additional common stock, value	$ 15.9
Common Stock Equivalents [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Outstanding awards and options not included in diluted earnings per share		812,695	1,062,198	1,186,259
Common Stock Equivalents [Member] \| Performance-based restricted stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Outstanding awards and options not included in diluted earnings per share		221,036	167,583	101,672