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Note 5 - Goodwill and Intangible Assets (Details) - Other Intangible Assets (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | $ 35,573 | $ 22,595
Accumulated Amortization | 10,156 | 7,177
Net | 25,417 | 15,418
Intellectual Property [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 7,027 | 4,991
Accumulated Amortization | 1,641 | 1,037
Net | 5,386 | 3,954
Trade Names [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 2,648 | 2,296
Accumulated Amortization | 519 | 248
Net | 2,129 | 2,048
Useful Life | 10 years | 10 years
Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 24,612 | 14,485
Accumulated Amortization | 7,326 | 5,345
Net | 17,286 | 9,140
Noncompete Agreements [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 1,286 | 823
Accumulated Amortization | 670 | 547
Net | $ 616 | $ 276
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 |
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
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 |
Maximum [Member] | Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 10 years | 8 years 6 months
Maximum [Member] | Noncompete Agreements [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 10 years | 5 years

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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=26713463&loc=d3e16323-109275 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount before 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=26713463&loc=d3e16323-109275 + Details
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- Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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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. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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