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New Accounting Pronouncements - Additional Information (Detail) - USD ($)
 3 Months Ended
Oct. 01, 2015
Dec. 31, 2015
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]    
Increase in deferred tax assets and retained earnings   $ 5,197,000
New Accounting Pronouncement, Early Adoption, Effect [Member] | Accounting Standards Update 2016-09 [Member]    
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]    
Increase in deferred tax assets and retained earnings $ 5,200,000  
Additional income tax expense   $ 201,000