Income Tax - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 23, 2016	Sep. 25, 2015	Sep. 23, 2016	Sep. 25, 2015	Dec. 25, 2015	Dec. 26, 2014
Income Tax Disclosure [Abstract]
Income tax provision	$ 2,750	$ 647	$ 6,360	$ 2,028
Effective tax rate	51.30%	27.80%	98.50%	28.60%
Undistributed earnings of foreign subsidiaries	$ 80,800		$ 80,800
Gross liability for unrecognized tax benefits	$ 374	$ 330	$ 374	$ 330	$ 337	$ 356