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Note 4 - Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Property, Plant and Equipment, Gross	$ 33,467	$ 33,328
Accumulated depreciation	(11,242)	(9,735)
Property, plant, and equipment, net	22,225	23,593
Land [Member]
Property, Plant and Equipment, Gross	889	889
Building [Member]
Property, Plant and Equipment, Gross	18,648	18,543
Manufacturing Equipment [Member]
Property, Plant and Equipment, Gross	8,732	9,156
Computer Equipment [Member]
Property, Plant and Equipment, Gross	3,698	3,459
Construction in Progress [Member]
Property, Plant and Equipment, Gross	107	60
Property, Plant and Equipment, Other Types [Member]
Property, Plant and Equipment, Gross	$ 1,393	$ 1,221

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.14)
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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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-Name Accounting Standards Codification
-Topic 944
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-Section S99
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