Variable Interest Entities (Details) $ in Millions	9 Months Ended
	Oct. 30, 2016 USD ($)
Variable Interest Entity [Line Items]
Nature and extent of involvement in VIE	With regards to its investment in MultiPhy, the Company concluded that its equity interest represents a variable interest, but it is not the primary beneficiary as prescribed in ASC 810. Specifically, in reaching this conclusion, the Company considered the activities that most significantly drive profitability for MultiPhy and determined that the activity that most significantly drove profitability was related to the technology and related product road maps. The Company has a board observer role and thus concluded that it was not in a position of decision-making or other authority to influence MultiPhy’s activities that could be considered significant with respect to its operations, including research and development plans and changes to the product road map.
MultiPhy Ltd [Member]
Variable Interest Entity [Line Items]
Maximum exposure to loss as a result of investment	$ 14.0