Consolidated Statements of Stockholders' Equity (USD $) In Millions, except Share data, unless otherwise specified	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance at Dec. 27, 2009	$ 124.9	$ 0	$ 0	$ 523.0	$ 0	$ (398.1)
Preferred stock, balance at Dec. 27, 2009		0
Common stock, balance at Dec. 27, 2009			15,800,000
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	1.7			1.7
Issuance of common stock for cash (shares)			2,500,000
Issuance of common stock for cash	24.7			24.7
Fair value of options assumed for acquisitions	1.7			1.7
Stock-based compensation	1.9			1.9
Conversion of convertible notes (shares)			0
Conversion of convertible notes	0.5			0.5
Net income (loss)	14.5					14.5
Balance at Dec. 26, 2010	169.9	0	0	553.5	0	(383.6)
Preferred stock, balance at Dec. 26, 2010		0
Common stock, balance 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 (shares)			4,900,000
Issuance of common stock for cash	61.1			61.1
Fair value of options assumed for acquisitions	1.9			1.9
Issuance of common stock for acquisitions (in shares)			10,400,000
Issuance of common stock for acquisitions	109.7			109.7
Stock-based compensation	3.3			3.3
Conversion of convertible notes (shares)			100,000
Conversion of convertible notes	0			0
Common stock repurchased (in shares)			(2,000,000)
Common stock repurchased	(10.9)			(10.9)
Net income (loss)	(24.2)					(24.2)
Other comprehensive loss, net of tax	(0.2)				(0.2)
Balance at Dec. 25, 2011	312.6	0	0	720.6	(0.2)	(407.8)
Preferred stock, balance at Dec. 25, 2011	0	0
Common stock, balance at Dec. 25, 2011	34,395,895		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			0
Issuance of common stock for cash (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
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 income (loss)	(114.4)					(114.4)
Other comprehensive loss, net of tax	(0.6)				(0.6)
Balance at Dec. 30, 2012	$ 324.1	$ 0	$ 0	$ 847.1	$ (0.8)	$ (522.2)
Preferred stock, balance at Dec. 30, 2012	0	0
Common stock, balance at Dec. 30, 2012	56,613,024		56,600,000