Note 5 - Goodwill and Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Accumulated Amortization	$ (27,062)	$ (20,669)
Net	$ 37,790	40,797
Finite-Lived Intangible Asset, Useful Life
Carrying Amount	$ 64,852	61,466
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	3 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	16 years
Intellectual Property [Member]
Accumulated Amortization	$ (3,824)	(3,093)
Net	3,386	4,271
Carrying Amount	$ 7,210	$ 7,364
Intellectual Property [Member] \| Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	10 years	10 years
Intellectual Property [Member] \| Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	16 years	16 years
Trade Names [Member]
Accumulated Amortization	$ (1,727)	$ (1,271)
Net	1,936	2,203
Carrying Amount	$ 3,663	$ 3,474
Trade Names [Member] \| Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	3 years	3 years
Trade Names [Member] \| Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	10 years	10 years
Customer Relationships [Member]
Accumulated Amortization	$ (20,260)	$ (15,228)
Net	31,874	33,554
Carrying Amount	$ 52,134	$ 48,782
Customer Relationships [Member] \| Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	7 years	7 years
Customer Relationships [Member] \| Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	10 years	10 years
Noncompete Agreements [Member]
Accumulated Amortization	$ (1,251)	$ (1,077)
Net	594	769
Carrying Amount	$ 1,845	$ 1,846
Noncompete Agreements [Member] \| Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	3 years	3 years
Noncompete Agreements [Member] \| Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	10 years	10 years

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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