Acquisition - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	May. 17, 2013
Business Combinations [Abstract]
Business acquisition date	May 17, 2013
Business acquisition purchase price of certain assets and assumed certain liabilities			$ 3.7
Business acquisition of certain assets and assumed certain liabilities in cash			1.9
Business acquisition estimated contingent payments			1.8
Business acquisition of goodwill and other intangible assets			$ 3.6
Reduction in contingent payment liability		$ 1.0