Acquisition (Summary of Assets Acquired and Liabilities Assumed) (Detail) - USD ($) $ in Thousands	Sep. 25, 2016	Dec. 31, 2015	Sep. 27, 2015	Aug. 04, 2015
Business Acquisition [Line Items]
Goodwill	$ 54,663	$ 54,182	$ 54,267
Deeley Imports
Business Acquisition [Line Items]
Current assets				$ 11,088
Property, plant and equipment				144
Intangible assets				20,842
Goodwill				28,567
Total assets				60,641
Current liabilities				731
Net assets acquired				$ 59,910