Income Taxes (Details) - USD ($) $ in Millions	6 Months Ended
	Jan. 01, 2017	Jun. 30, 2016
Income tax receivable
Income tax receivable	$ 0.2	$ 1.6
Income tax payable	0.1
Other Long-term Liabilities
Income tax receivable
Uncertain tax positions	1.1	$ 1.0
Federal
Income tax receivable
Income tax refund	$ 0.9