Commitments and Contingencies - Warranty (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 27, 2015	Dec. 28, 2014
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance, at beginning of the period	$ 4.9	$ 4.7
Costs accrued and revenues deferred	1.2	0.8
Settlements made (in cash or kind) and revenues recognized	(1.8)	(0.6)
Balance, at end of period	4.3	4.9
Less: non-current portion	0.4	0.3
Current warranty liability	$ 3.9	$ 4.6
Minimum
Warranty Coverage Period [Line Items]
Warranty coverage period	1 year
Maximum
Warranty Coverage Period [Line Items]
Warranty coverage period	10 years
Product Warranties | Minimum
Warranty Coverage Period [Line Items]
Warranty coverage period	1 year
Product Warranties | Maximum
Warranty Coverage Period [Line Items]
Warranty coverage period	10 years