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Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Business Combination Segment Allocation [Line Items]
Foreign exchange differences	$ (1)	$ (1)
Goodwill
Goodwill impairment			$ 392
Electronic Products [Member]
Business Combination Segment Allocation [Line Items]
Goodwill	393	393
Impairment	(392)	(392)
Metallic Parts [Member]
Business Combination Segment Allocation [Line Items]
Goodwill	317	317
Impairment	$ (317)	$ (317)

X

- Definition

Amount of accumulated foreign currency exchange differences for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 1
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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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