CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY (USD $) In Millions, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance at Dec. 25, 2011	$ 312.6	$ 0	$ 720.6	$ (0.2)	$ (407.8)
Balance (in shares) at Dec. 25, 2011		32,400,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock for employee stock purchase plan, options and warrants (in shares)		200,000
Issuance of common stock for employee stock purchase plan, options and warrants	0		0
Issuance of common stock for cash (in shares)		20,000,000
Issuance of common stock for cash	97.0		97.0
Issuance of common stock for acquisitions (in shares)		4,000,000
Issuance of common stock for acquisitions	23.8		23.8
Common stock repurchased for employee stock purchase plan	(0.7)		(0.7)
Stock-based compensation	6.6		6.6
Restricted stock units traded for taxes (in shares)		0
Restricted stock units traded for taxes	(0.2)		(0.2)
Net loss	(114.4)				(114.4)
Other comprehensive loss, net of tax	(0.6)			(0.6)
Balance at Dec. 30, 2012	324.1	0	847.1	(0.8)	(522.2)
Balance (in shares) at Dec. 30, 2012		56,600,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock for employee stock purchase plan, options and warrants (in shares)		300,000
Issuance of common stock for employee stock purchase plan, options and warrants	1.6		1.6
Stock-based compensation	7.4		7.4
Restricted stock units traded for taxes (in shares)		100,000
Restricted stock units traded for taxes	(0.1)		(0.1)
Net loss	(37.2)				(37.2)
Other comprehensive loss, net of tax	0			0
Balance at Dec. 29, 2013	295.8	0	856.0	(0.8)	(559.4)
Balance (in shares) at Dec. 29, 2013	57,056,892	57,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock for employee stock purchase plan, options and warrants (in shares)		700,000
Issuance of common stock for employee stock purchase plan, options and warrants	3.9		3.9
Stock-based compensation	3.8		3.8
Restricted stock units traded for taxes (in shares)		100,000
Restricted stock units traded for taxes	(0.3)		(0.3)
Net loss	(78.0)				(78.0)
Other comprehensive loss, net of tax	(0.9)			(0.9)
Balance at Dec. 28, 2014	$ 224.3	$ 0	$ 863.4	$ (1.7)	$ (637.4)
Balance (in shares) at Dec. 28, 2014	57,801,978	57,800,000