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SEGMENT INFORMATION (DETAILS) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2013
Revenue, Major Customer [Line Items] |  |  |
Intersegment sales | $ 22,373 | $ 22,936 | $ 21,933
Intersegment eliminations | 0 | 0 | 0
Total net sales | 22,373 | 22,936 | 21,933
Operating income: | 1,271 | 793 | 355
Interest expense: | 0 | 1 | 9
Depreciation and amortization expense: | 393 | 557 | 586
Capital expenditure: | 129 | 73 | 319
Total assets: | 16,987 | 15,776 |
Long-lived assets: | 1,094 | 1,213 |
Metal Stamping and Mechanical OEM [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Unaffiliated customers | 12,520 | 13,820 | 14,646
Intersegment sales | 0 | 0 | 0
Total net sales | 12,520 | 13,820 | 14,646
Operating income: | 745 | 527 | 319
Interest expense: | 0 | 1 | 6
Depreciation and amortization expense: | 226 | 306 | 353
Capital expenditure: | 71 | 44 | 210
Total assets: | 9,123 | 10,452 |
Long-lived assets: | 609 | 796 |
Electric OEM [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Unaffiliated customers | 9,853 | 9,116 | 7,287
Intersegment sales | 0 | 0 | 0
Total net sales | 9,853 | 9,116 | 7,287
Operating income: | 605 | 352 | 142
Interest expense: | 0 | 0 | 3
Depreciation and amortization expense: | 167 | 251 | 233
Capital expenditure: | 58 | 29 | 109
Total assets: | 7,732 | 4,859 |
Long-lived assets: | 485 | 417 |
Corporate [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Operating income: | (79) | (86) | $ (106)
Total assets: | $ 132 | $ 465 |

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