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Note 11 - Fair Value Measurements - Fair Value on a Recurring Basis (Details) - Contingent Consideration [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Mar. 31, 2016
Contingent Consideration	$ 4,436	$ 9,037
Fair Value, Inputs, Level 1 [Member]
Contingent Consideration
Fair Value, Inputs, Level 2 [Member]
Contingent Consideration
Fair Value, Inputs, Level 3 [Member]
Contingent Consideration	$ 4,436	$ 9,037

X

- Definition

Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: