Note 3 - Business Combinations (Details) - Fair Value Allocated to Tangible and Identifiable Intangible Assets (USD $) In Thousands, unless otherwise specified								0 Months Ended	1 Months Ended	0 Months Ended
	Sep. 28, 2014	Mar. 30, 2014	Mar. 31, 2013	Jun. 03, 2014 Developed Technology Rights [Member] Integrated Memory Logic Limited [Member]	Jun. 03, 2014 In Process Research and Development [Member] Integrated Memory Logic Limited [Member]	Jun. 03, 2014 Customer Relationships [Member] Integrated Memory Logic Limited [Member]	Jun. 03, 2014 Trade Names [Member] Integrated Memory Logic Limited [Member]	Jun. 03, 2014 Integrated Memory Logic Limited [Member]	Sep. 28, 2014 Integrated Memory Logic Limited [Member]	Jan. 14, 2014 Stretch, Inc. [Member]	Jul. 05, 2013 Cadeka Microcircuits [Member]
Identifiable tangible assets (liabilities)
Cash								$ 133,752
Accounts receivable								10,096
Inventories								3,950
Other current assets								727
Property, plant and equipment								480
Other assets								308
Current liabilities								(12,356)
Long-term liabilities								(3,595)
Total identifiable tangible assets (liabilities), net								133,362		2,937	3,286
Identifiable intangible assets				55,780	8,100	15,060	1,120	80,060		7,010	20,380
Total identifiable assets, net								213,422
Goodwill	45,106	30,410	10,356					14,696		667	19,387
Liabilities assumed									(3,800)	(10,604)	(8,216)
Fair value of total consideration transferred								$ 228,118	$ 18,900	$ 10	$ 34,837