Note 7 - Goodwill and Intangible Assets - Acquired Intangibles (Details) - USD ($) $ in Thousands		May. 01, 2015	Jun. 27, 2013	Feb. 18, 2010
Developed Technology Rights [Member] | RadioPulse [Member]
Fair Value		$ 1,005
Finite-Lived Intangible Assets, Amortization Method		Accelerated
Acquired Finite-Lived Intangible Assets, Estimated Useful Life		5 years
Developed Technology Rights [Member] | Acquired MCU Business [Member]
Fair Value			$ 11,504
Finite-Lived Intangible Assets, Amortization Method			Straight-line
Acquired Finite-Lived Intangible Assets, Estimated Useful Life			5 years
Developed Technology Rights [Member] | Zilog Inc [Member]
Fair Value				$ 4,800
Finite-Lived Intangible Assets, Amortization Method				Straight-line
Acquired Finite-Lived Intangible Assets, Estimated Useful Life				6 years
Developed Technology Rights [Member]
Fair Value		$ 1,005
Finite-Lived Intangible Assets, Amortization Method		Accelerated
Acquired Finite-Lived Intangible Assets, Estimated Useful Life		5 years
In Process Research and Development [Member] | RadioPulse [Member]
Fair Value		$ 1,188
Finite-Lived Intangible Assets, Amortization Method		Straight-line
Acquired Finite-Lived Intangible Assets, Estimated Useful Life		5 years
In Process Research and Development [Member]
Fair Value	[1]	$ 1,188
Finite-Lived Intangible Assets, Amortization Method	[1]	Straight-line
Acquired Finite-Lived Intangible Assets, Estimated Useful Life	[1]	5 years
Customer Relationships [Member] | RadioPulse [Member]
Fair Value		$ 500
Finite-Lived Intangible Assets, Amortization Method		Accelerated
Acquired Finite-Lived Intangible Assets, Estimated Useful Life		3 years
Customer Relationships [Member] | Acquired MCU Business [Member]
Fair Value			$ 6,920
Finite-Lived Intangible Assets, Amortization Method			Accelerated
Acquired Finite-Lived Intangible Assets, Estimated Useful Life			3 years
Customer Relationships [Member] | Zilog Inc [Member]
Fair Value				$ 6,100
Finite-Lived Intangible Assets, Amortization Method				Accelerated
Acquired Finite-Lived Intangible Assets, Estimated Useful Life				3 years 30 days
Customer Relationships [Member]
Fair Value		$ 500
Finite-Lived Intangible Assets, Amortization Method		Accelerated
Acquired Finite-Lived Intangible Assets, Estimated Useful Life		3 years
Contract Backlog [Member] | RadioPulse [Member]
Fair Value		$ 174
Finite-Lived Intangible Assets, Amortization Method		Straight-line
Acquired Finite-Lived Intangible Assets, Estimated Useful Life		180 days
Contract Backlog [Member] | Acquired MCU Business [Member]
Fair Value			$ 5,155
Finite-Lived Intangible Assets, Amortization Method			Straight-line
Acquired Finite-Lived Intangible Assets, Estimated Useful Life			270 days
Contract Backlog [Member] | Zilog Inc [Member]
Fair Value				$ 2,000
Finite-Lived Intangible Assets, Amortization Method				Straight-line
Acquired Finite-Lived Intangible Assets, Estimated Useful Life				1 year
Contract Backlog [Member]
Fair Value		$ 174
Finite-Lived Intangible Assets, Amortization Method		Straight-line
Acquired Finite-Lived Intangible Assets, Estimated Useful Life		180 days
Trade Names [Member] | Acquired MCU Business [Member]
Fair Value			$ 421
Finite-Lived Intangible Assets, Amortization Method			Straight-line
Acquired Finite-Lived Intangible Assets, Estimated Useful Life			5 years
Trade Names [Member] | Zilog Inc [Member]
Fair Value				$ 1,100
Finite-Lived Intangible Assets, Amortization Method				Straight-line
Acquired Finite-Lived Intangible Assets, Estimated Useful Life				6 years
RadioPulse [Member]
Fair Value		$ 2,867
Acquired MCU Business [Member]
Fair Value			$ 24,000
Zilog Inc [Member]
Fair Value				$ 14,000
Fair Value		$ 2,867

[1] Amortization will start after the completion of the research and development activities of the related projects.