Stockholders' Equity (Common and Preferred Stock) (Details) (USD $)	0 Months Ended				1 Months Ended	12 Months Ended				0 Months Ended						0 Months Ended	1 Months Ended
	May 14, 2012	Dec. 01, 2011	Feb. 11, 2011	Oct. 12, 2010	Nov. 30, 2011	Dec. 30, 2012	Dec. 25, 2011	Dec. 26, 2010	Mar. 07, 2011	Mar. 08, 2011 Series B Convertible Preferred Stock	Mar. 08, 2011 Common stock	Feb. 11, 2011 Common stock	Oct. 12, 2010 Common stock	May 14, 2012 Common stock	Dec. 01, 2011 Common stock	Jul. 27, 2011 Integral	Jul. 31, 2011 Integral
Class of Stock [Line Items]
Common stock issued for acquisitions (in shares)																10,400,000	10,400,000
Common stock issued for cash (in shares)	20,000,000											4,900,000	2,500,000
Purchase price (in dollars per share)												$ 13.25	$ 10.20	$ 5.00	$ 5.45
Gross proceeds from issuance of common stock	$ 100,000,000.0		$ 64,800,000	$ 25,800,000
Proceeds from the issuance of common stock, net of issuance costs	97,000,000		61,100,000	24,700,000		97,000,000	61,100,000	24,700,000
Common stock repurchased (in shares)		2,000,000			2,000,000
Number of shares of preferred stock converted										(10,000)
Number of common shares issued upon conversion of preferred stock											100,000
Total liquidation preference									$ 5,000,000