Allocation of Estimated Consideration (Detail) (USD $) In Thousands, unless otherwise specified	Apr. 01, 2012 Timing Business of Maxim Integrated Products, Inc.	Jan. 01, 2012 Zarlink Semiconductor, Inc.
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Cash and cash equivalents		$ 83,497
Accounts receivable		17,980
Inventories	2,741	28,403
Other current assets		37,585
Property and equipment	4	7,648
Other assets		41,139
Identifiable intangible assets	12,960	210,100
Goodwill	28,509	295,925
Current liabilities	(169)	(58,379)
Deferred tax liabilities		(35,963)
Other non-current liabilities		(4,265)
Total estimated consideration	$ 44,045	$ 623,670