New Accounting Pronouncements - Additional Information (Detail) - Accounting Standards Update 2016-09 - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2016	Sep. 30, 2016
Item Effected [Line Items]
Cumulative effect reduction to retained earnings	$ 697
Tax deficiencies		$ 1,270
Tax deficiencies, per share		$ 0.05

Amount of the cumulative effect on retained earnings net of related income tax effect.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22663-107794

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration