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Note 11 - Business Segment Information (Detail) - Components of segment performance (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 01, 2012 | Jul. 03, 2011 | Jul. 01, 2012 | Jul. 03, 2011 | Dec. 31, 2011
Revenues | $ 18,706 | $ 43,112 | $ 46,207 | $ 71,027 |
Segment contribution | (2,932) | 3,037 | (4,221) | (899) |
Interest expense, net | (113) | (161) | (216) | (316) |
Miscellaneous | (20) | (9) | 32 | 290 |
Income taxes-current | (188) | (63) | (267) | (67) |
Income taxes-deferred | 17 | (55) | 5 | (109) |
Income (loss) from discontinued operations | 49 | (2,325) | (22) | (4,178) |
Noncontrolling interest | 20 | 15 | 20 | 28 |
Net income (loss) attributable to Ultralife | (3,167) | 439 | (4,669) | (5,251) |
Total assets | 92,991 | 102,439 | 92,991 | 102,439 | 100,815
Battery & Energy Products [Member] |  |  |  |  |
Revenues | 15,523 | 31,239 | 35,605 | 55,487 |
Segment contribution | 3,763 | 7,253 | 7,706 | 10,294 |
Total assets | 51,477 | 56,541 | 51,477 | 56,541 |
Communications Systems [Member] |  |  |  |  |
Revenues | 3,183 | 11,873 | 10,602 | 15,540 |
Segment contribution | 704 | 4,307 | 3,354 | 5,680 |
Total assets | 30,548 | 33,329 | 30,548 | 33,329 |
Discontinued Operations [Member] |  |  |  |  |
Income (loss) from discontinued operations | 49 | (2,325) | (22) | (4,178) |
Total assets | 2,759 | 3,772 | 2,759 | 3,772 |
Corporate [Member] |  |  |  |  |
Segment contribution | (7,399) | (8,523) | (15,281) | (16,873) |
Interest expense, net | (113) | (161) | (216) | (316) |
Miscellaneous | (20) | (9) | 32 | 290 |
Income taxes-current | (188) | (63) | (267) | (67) |
Income taxes-deferred | 17 | (55) | 5 | (109) |
Noncontrolling interest | 20 | 15 | 20 | 28 |
Total assets | $ 8,207 | $ 8,797 | $ 8,207 | $ 8,797 |

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