Restructuring - Additional Information (Detail) $ in Millions	1 Months Ended
Feb. 29, 2016 USD ($) Installments
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 2.7
Number of installments \| Installments	2
Severance Expense
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 1.2
Retention bonuses
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 1.5

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Name:	us-gaap_RestructuringCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration