Stockholders' Equity - Common and Preferred Stock (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended			12 Months Ended				0 Months Ended				0 Months Ended
	May 14, 2012	Dec. 01, 2011	Feb. 11, 2011	Dec. 29, 2013	Dec. 30, 2012	Dec. 25, 2011	Mar. 08, 2011	Mar. 08, 2011 Common stock	Feb. 11, 2011 Common stock	May 14, 2012 Common stock	Dec. 01, 2011 Common stock	Mar. 08, 2011 Series B Convertible Preferred Stock	Jul. 27, 2011 Integral
Class of Stock [Line Items]
Common stock issued for cash (in shares)	20,000,000								4,900,000
Purchase price (in dollars per share)									$ 13.25	$ 5.00	$ 5.45
Gross proceeds from issuance of common stock	$ 100.0		$ 64.8
Proceeds from the issuance of common stock, net of issuance costs	97.0		61.1	0	97.0	61.1
Common stock repurchased (in shares)		2,000,000
Common stock issued for acquisitions (in shares)													10,400,000
Number of shares of preferred stock converted												10,000
Number of common shares issued upon conversion of preferred stock								100,000
Total liquidation preference							$ 5.0