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Note 9 - Segment Information (Details) - Revenues from External Customers - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Net revenues from unaffiliated customers:
Revenues from unaffiliated customers	$ 18,158	$ 16,400
UNITED STATES
Net revenues from unaffiliated customers:
Revenues from unaffiliated customers	12,194	8,491
Foreign [Member]
Net revenues from unaffiliated customers:
Revenues from unaffiliated customers	$ 5,964	$ 7,909

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- References

No definition available.

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 225



-SubTopic 10



-Section S99



-Paragraph 2



-Subparagraph (SX 210.5-03.1)



-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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