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Note 11 - Business Segment Information (Detail) - Components of segment performance (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2012 | Oct. 02, 2011 | Sep. 30, 2012 | Oct. 02, 2011 | Dec. 31, 2011
Revenues | $ 26,181 | $ 35,204 | $ 72,388 | $ 106,231 |
Segment contribution | 1,754 | 1,545 | (2,468) | 646 |
Interest expense, net | (96) | (124) | (312) | (440) |
Miscellaneous | (15) | 49 | 17 | 339 |
Income taxes-current | (120) | (67) | (387) | (134) |
Income taxes-deferred | (55) | (55) | (50) | (164) |
Income (Loss) from discontinued operations | 200 | 4 | 178 | (4,174) |
Noncontrolling interest | 11 | 11 | 31 | 39 |
Net income (loss) attributable to Ultralife | 1,679 | 1,363 | (2,991) | (3,888) |
Total assets | 95,329 | 101,347 | 95,329 | 101,347 | 100,815
Battery & Energy Products [Member] |  |  |  |  |
Revenues | 16,633 | 28,834 | 52,238 | 84,321 |
Segment contribution | 4,770 | 7,929 | 12,476 | 18,223 |
Total assets | 54,031 | 54,661 | 54,031 | 54,661 |
Communications Systems [Member] |  |  |  |  |
Revenues | 9,548 | 6,370 | 20,150 | 21,910 |
Segment contribution | 3,449 | 1,431 | 6,803 | 7,111 |
Total assets | 32,290 | 34,001 | 32,290 | 34,001 |
Discontinued Operations [Member] |  |  |  |  |
Income (Loss) from discontinued operations | 200 | 4 | 178 | (4,174) |
Total assets | 11 | 2,885 | 11 | 2,885 |
Corporate [Member] |  |  |  |  |
Segment contribution | (6,465) | (7,815) | (21,747) | (24,688) |
Interest expense, net | (96) | (124) | (312) | (440) |
Miscellaneous | (15) | 49 | 17 | 339 |
Income taxes-current | (120) | (67) | (387) | (134) |
Income taxes-deferred | (55) | (55) | (50) | (164) |
Noncontrolling interest | 11 | 11 | 31 | 39 |
Total assets | $ 8,997 | $ 9,800 | $ 8,997 | $ 9,800 |

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