Employee Benefit Plans - Components of Net Periodic Pension Cost for Defined Benefit Pension Plan and Retirement Plan (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Compensation and Retirement Disclosure [Abstract]
Service cost	$ 133	$ 196	$ 399	$ 589
Interest cost	341	338	1,025	1,013
Expected return on plan assets	(370)	(374)	(1,111)	(1,121)
Amortization of actuarial losses	191	222	572	665
Net periodic pension cost	$ 295	$ 382	$ 885	$ 1,146