Acquisitions, Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended			3 Months Ended		12 Months Ended
	Mar. 29, 2014	Dec. 28, 2013	Dec. 02, 2013 Shipwire, Inc. [Member]	Sep. 30, 2013 CloudBlue [Member]	Sep. 12, 2013 SoftCom [Member]	Mar. 29, 2014 Maximum [Member]	Mar. 29, 2014 Minimum [Member]	Dec. 28, 2013 Trade Names [Member] Shipwire, Inc. [Member]	Dec. 28, 2013 Trade Names [Member] CloudBlue [Member]	Dec. 28, 2013 Customer Relationships [Member] Shipwire, Inc. [Member]	Dec. 28, 2013 Customer Relationships [Member] CloudBlue [Member]	Dec. 28, 2013 Internet Domain Names [Member] SoftCom [Member]	Dec. 28, 2013 Computer Software, Intangible Asset [Member] Shipwire, Inc. [Member]	Dec. 28, 2013 Computer Software, Intangible Asset [Member] CloudBlue [Member]	Dec. 28, 2013 Computer Software, Intangible Asset [Member] SoftCom [Member]
Acquisitions [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life								5 years	5 years	5 years	5 years	6 years	5 years	5 years	6 years
Business combination, cash paid			$ 86,000,000	$ 38,500,000	$ 11,000,000
Business Combination, Consideration Transferred, Liabilities Paid					3,400,000
Goodwill	527,526,000	527,526,000	65,000,000	25,000,000	15,000,000
Identifiable intangible assets			25,000,000	15,000,000	9,000,000
Other payments to acquire businesses					5,000,000
Business combination, deferred payment period					3 years
Business combination, performance-based earn out					$ 3,650,000
Maximum amortization period for finite-lived identifiable intangible assets	10 years					20 years	3 years