Note 3 - Business Combinations (Details) - Business Acquistion Purchase Price (Integrated Memory Logic Limited [Member], USD $)	0 Months Ended		1 Months Ended	3 Months Ended
	Jun. 03, 2014	Jun. 03, 2013	Sep. 28, 2014	Dec. 28, 2014
Integrated Memory Logic Limited [Member]
Note 3 - Business Combinations (Details) - Business Acquistion Purchase Price [Line Items]
Cash	$ 206,400,000	$ 206,411,000		$ 18,900,000
Consideration for the acquisition of non-controlling interests		17,872,000
Fair value of assumed iML employee options		3,835,000
Total purchase price		$ 228,118,000	$ 18,900,000