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. 26, 2010	$ 169.9	$ 0	$ 553.5	$ 0	$ (383.6)
Balance (in shares) at Dec. 26, 2010		18,600,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock for employee stock purchase plan, options and warrants (shares)		400,000
Issuance of common stock for employee stock purchase plan, options and warrants	2.0		2.0
Issuance of common stock for cash (in shares)		4,900,000
Issuance of common stock for cash	61.1		61.1
Issuance of common stock for acquisitions (in shares)		10,400,000
Stock-based compensation	109.7		109.7
Fair value of options assumed for acquisitions	1.9		1.9
Stock-based compensation	3.3		3.3
Conversion of convertible notes (in shares)		100,000
Conversion of convertible notes	0
Common stock repurchased (in shares)		(2,000,000)
Net loss	(10.9)		(10.9)
Net loss	(24.2)				(24.2)
Other comprehensive loss, net of tax	(0.2)			(0.2)
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 (shares)		200,000
Issuance of common stock for employee stock purchase plan, options and warrants	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
Stock-based compensation	23.8		23.8
Stock-based compensation	6.6		6.6
Common stock repurchased for employee stock purchase plan	(0.7)		(0.7)
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	56,613,024	56,600,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock for employee stock purchase plan, options and warrants (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	(0.1)		(0.1)
Restricted stock units traded for taxes (in shares)		100,000
Net loss	(37.2)				(37.2)
Other comprehensive loss, net of tax	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