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Segment Information (Schedule of Segment Asset Information) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Capital expenditure | $ 591 | $ 890 | $ 853
Depreciation and amortization | 2,373 | 2,824 | 3,621
Electronic Products [Member] |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Identifiable assets | 20,043 | 22,610 | 25,911
Capital expenditure | 167 | 340 | 648
Depreciation and amortization | 404 | 415 | 399
Metallic Parts [Member] |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Identifiable assets |  |  | 397
Capital expenditure |  |  | 5
Depreciation and amortization |  | 25 | 41
Injection Molded Plastic Parts [Member] |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Identifiable assets | 67,528 | 73,829 | 74,328
Capital expenditure | 424 | 550 | 200
Depreciation and amortization | 1,969 | 2,384 | 3,181
Segment Total [Member] |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |
Identifiable assets | 87,571 | 96,439 | 100,636
Capital expenditure | 591 | 890 | 853
Depreciation and amortization | $ 2,373 | $ 2,824 | $ 3,621

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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
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