Note 5 - Goodwill and Intangible Assets (Details) - Other Intangible Assets (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	48,062	35,573
Accumulated Amortization	14,831	10,156
Net	33,231us-gaap_FiniteLivedIntangibleAssetsNet	25,417us-gaap_FiniteLivedIntangibleAssetsNet
Minimum [Member] \| Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	10 years	10 years
Minimum [Member] \| Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	3 years	3 years
Minimum [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	7 years	7 years
Minimum [Member] \| Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	3 years	3 years
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	3 years
Maximum [Member] \| Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	16 years	16 years
Maximum [Member] \| Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	10 years	10 years
Maximum [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	10 years	10 years
Maximum [Member] \| Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	10 years	10 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	16 years
Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	7,210	7,027
Accumulated Amortization	2,362	1,641
Net	4,848	5,386
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	3,158	2,648
Accumulated Amortization	863	519
Net	2,295	2,129
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	36,408	24,612
Accumulated Amortization	10,752	7,326
Net	25,656	17,286
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	1,286	1,286
Accumulated Amortization	854	670
Net	432	616

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

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=26713463&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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- Definition

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.

+ References

No definition available.

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