Note 3 - Business Combinations (Details) - Allocation of the Purchase Price to Tangible and Intangible Assets Acquired and Liabilities Assumed in the Acquisition of Cadeka (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 05, 2014	Dec. 28, 2014	Mar. 30, 2014	Mar. 31, 2013
Note 3 - Business Combinations (Details) - Allocation of the Purchase Price to Tangible and Intangible Assets Acquired and Liabilities Assumed in the Acquisition of Cadeka [Line Items]
Goodwill		$ 44,871	$ 30,410	$ 10,356
Cadeka Microcircuits [Member]
Note 3 - Business Combinations (Details) - Allocation of the Purchase Price to Tangible and Intangible Assets Acquired and Liabilities Assumed in the Acquisition of Cadeka [Line Items]
Tangible assets	3,286
Intangible assets	20,380
Goodwill	19,387
Liabilities assumed	(8,216)
Fair value of total consideration transferred	$ 34,837