Retirement Plans - Schedule of Components of Net Periodic Pension Cost (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Compensation and Retirement Disclosure [Abstract]
Service cost		$ 0.2	$ 0.5
Interest cost	$ 2.8	2.7	2.4
Expected return on plan assets	(3.2)	(3.0)	(2.4)
Amortization of prior service costs	0.1	0.1	0.1
Amortization of net actuarial loss	0.4	0.3	0.3
Net periodic pension cost	$ 0.1	$ 0.3	$ 0.9