Note 14 - Segment and Geographic Information (Tables)

3 Months Ended

Jun. 30, 2016

Notes Tables

Revenue from External Customers by Geographic Areas [Table Text Block]

	Three Months Ended June 30,
	2016		2015
	(unaudited)
United States	$	19,501	$	20,133
Europe and the Middle East
France		3,450		2,040
Germany		8,599		8,077
Italy		1,076		1,264
Netherlands		1,140		695
United Kingdom		3,627		3,220
Other		5,953		6,697
Asia Pacific
China		22,640		21,235
Japan		1,718		3,322
Korea		4,695		6,136
Malaysia		804		1,242
Singapore		3,007		3,117
Thailand		811		1,043
Other		1,747		1,484
Rest of the World
India		900		1,132
Other		970		1,210
Total	$	80,638	$	82,047

Revenue from External Customers by Products and Services [Table Text Block]

	Three Months Ended June 30,
	2016		2015
	(unaudited)
Power semiconductors	$	56,479	$	54,978
Integrated circuits		20,382		22,484
Systems and RF power semiconductors		3,777		4,585
Total	$	80,638	$	82,047