Long-Term Debt and Capital Lease Obligations - Maturities of Long-Term Debt and Capital Lease Obligations (Detail) - USD ($) $ in Millions		Dec. 30, 2016	Jan. 01, 2016
Debt Instrument [Line Items]
2017		$ 6.5
2018		8.3
2019		10.2
2020		243.4
2021		0.2
Total		268.6
Less: Amounts representing interest	[1]	(36.3)
Total long-term debt and capital lease obligations		232.3	$ 254.2
Less: Current portion		(0.6)	(1.5)
Totals, net of current portion of long-term debt and capital lease obligations		231.7	$ 252.7
Long-Term Debt
Debt Instrument [Line Items]
2017		5.8
2018		7.7
2019		9.8
2020		243.2
2021		0.0
Total		266.5
Less: Amounts representing interest	[1]	(36.0)
Total long-term debt and capital lease obligations		230.5
Less: Current portion		0.0
Totals, net of current portion of long-term debt and capital lease obligations		$ 230.5
Assumed variable interest rate		3.00%
Capital Leases
Debt Instrument [Line Items]
2017		$ 0.7
2018		0.6
2019		0.4
2020		0.2
2021		0.2
Total		2.1
Less: Amounts representing interest	[1]	(0.3)
Total long-term debt and capital lease obligations		1.8
Less: Current portion		(0.6)
Totals, net of current portion of long-term debt and capital lease obligations		$ 1.2

[1] We utilize a variable interest rate on our long-term debt, and for presentation purposes we have used an assumed rate of 3%