Quarterly Financial Data (Unaudited) (Details) - USD ($)		1 Months Ended	3 Months Ended								12 Months Ended
	Sep. 22, 2015	May. 31, 2014	Dec. 27, 2015	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 27, 2015	Dec. 28, 2014	Dec. 29, 2013
Loss on extinguishment of debt									$ 39,100,000		$ 3,400,000	$ 39,100,000	$ 0
Senior secured notes			$ 452,700,000.0				$ 669,800,000.0				452,700,000.0	$ 669,800,000.0
Income from discontinued operations			3,000,000	$ 50,800,000	$ 900,000	$ (1,700,000)	$ 600,000	$ 400,000	$ (1,700,000)	$ (1,600,000)
Electronic Products Division
Income from discontinued operations				$ 50,800,000
Senior notes | 10% Senior Notes due June 2017
Loss on extinguishment of debt		$ 39,100,000
Senior secured notes		$ 625,000,000.0
Stated interest rate percentage		10.00%
Senior notes | 7% Senior Notes due 2019
Loss on extinguishment of debt	$ 3,400,000
Senior secured notes		$ 625,000,000.0	$ 450,000,000								$ 450,000,000
Stated interest rate percentage		7.00%	7.00%								7.00%