Note 14 - Segment and Geographic - Segment and Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
UNITED STATES
Net Revenues	$ 20,133	$ 22,504
FRANCE
Net Revenues	2,040	1,852
GERMANY
Net Revenues	8,077	8,449
ITALY
Net Revenues	1,264	1,473
SWEDEN
Net Revenues	705	1,285
UNITED KINGDOM
Net Revenues	3,220	5,379
Other Europe and the Middle East Regions [Member]
Net Revenues	6,687	7,787
CHINA
Net Revenues	21,235	20,402
JAPAN
Net Revenues	3,322	1,801
KOREA, REPUBLIC OF
Net Revenues	6,136	6,439
MALAYSIA
Net Revenues	1,242	1,632
SINGAPORE
Net Revenues	3,117	3,157
THAILAND
Net Revenues	1,043	1,045
Other Asia Pacific Regions [Member]
Net Revenues	1,484	2,113
INDIA
Net Revenues	1,132	1,249
Other Rest of the World [Member]
Net Revenues	1,210	1,513
Net Revenues	$ 82,047	$ 88,080