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SEGMENT INFORMATION (DETAILS) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2012
Revenue, Major Customer [Line Items] |  |  |
Intersegment sales | $ 22,936 | $ 21,933 | $ 25,370
Intersegment eliminations | 0 | 0 | (20,499)
Total net sales | 22,936 | 21,933 | 25,370
Operating income: | 793 | 355 | 230
Interest expense: | 1 | 9 | 24
Depreciation and amortization expense: | 557 | 586 | 670
Capital expenditure: | 73 | 319 | 355
Total assets: | 15,776 | 15,352 |
Long-lived assets: | 1,213 | 1,769 |
Metal Stamping and Mechanical Oem [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Unaffiliated customers | 13,820 | 14,646 | 14,689
Intersegment sales | 0 | 0 | 8,585
Total net sales | 13,820 | 14,646 | 23,274
Operating income: | 527 | 319 | 428
Interest expense: | 1 | 6 | 14
Depreciation and amortization expense: | 306 | 353 | 393
Capital expenditure: | 44 | 210 | 323
Total assets: | 10,452 | 10,022 |
Long-lived assets: | 796 | 1,142 |
Electric [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Unaffiliated customers | 9,116 | 7,287 | 10,681
Intersegment sales | 0 | 0 | 11,914
Total net sales | 9,116 | 7,287 | 22,595
Operating income: | 352 | 142 | 71
Interest expense: | 0 | 3 | 10
Depreciation and amortization expense: | 251 | 233 | 277
Capital expenditure: | 29 | 109 | 32
Total assets: | 4,859 | 5,228 |
Long-lived assets: | 417 | 627 |
Corporate [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Operating income: | (86) | (106) | (269)
Total assets: | $ 465 | $ 102 |

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