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Note 11 - Business Segment Information - Segment Activity (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Revenue | $ 85,531 | $ 82,460 |
Segment Contribution | 6,476 | 3,763 |
Interest Expense, Net | (183) | (263) |
Miscellaneous | (2) | (80) |
Income Tax Benefit | 1,369 | (98) |
Non-Controlling Interest | (16) | 27 |
Net Loss Attributable to Ultralife | 7,648 | 3,509 |
Total Assets | 97,186 | 84,744 |
Capital Expenditures | 1,290 | 1,377 |
Goodwill | 20,458 | 19,965 | $ 16,283
Depreciation and Amortization of Intangible Assets | 2,427 | 2,726 |
Stock-Based Compensation | 653 | 710 |
Miscellaneous | 2 | 80 |
Battery & Energy Products Segment [Member] |  |  |
Revenue | 69,789 | 64,753 |
Segment Contribution | 19,659 | 19,580 |
Interest Expense, Net |  |  |
Miscellaneous |  |  |
Income Tax Benefit |  |  |
Non-Controlling Interest |  |  |
Net Loss Attributable to Ultralife |  |  |
Total Assets | 44,720 | 39,691 |
Capital Expenditures | 1,015 | 852 |
Goodwill | 8,965 | 8,472 | 4,790
Depreciation and Amortization of Intangible Assets | 1,830 | 2,042 |
Stock-Based Compensation | 301 | 403 |
Miscellaneous |  |  |
Communications Systems Segment [Member] |  |  |
Revenue | 15,742 | 17,707 |
Segment Contribution | 6,573 | 5,528 |
Interest Expense, Net |  |  |
Miscellaneous |  |  |
Income Tax Benefit |  |  |
Non-Controlling Interest |  |  |
Net Loss Attributable to Ultralife |  |  |
Total Assets | 32,169 | 32,021 |
Capital Expenditures | 212 | 158 |
Goodwill | 11,493 | 11,493 | $ 11,493
Depreciation and Amortization of Intangible Assets | 430 | 541 |
Stock-Based Compensation | 88 | 110 |
Miscellaneous |  |  |
Corporate Segment [Member] |  |  |
Revenue |  |  |
Segment Contribution | (19,756) | (21,345) |
Interest Expense, Net | (183) | (263) |
Miscellaneous | (2) | (80) |
Income Tax Benefit | 1,369 | (98) |
Non-Controlling Interest | (16) | 27 |
Net Loss Attributable to Ultralife |  |  |
Total Assets | 20,297 | 13,032 |
Capital Expenditures | 63 | 367 |
Goodwill |  |  |
Depreciation and Amortization of Intangible Assets | 167 | 143 |
Stock-Based Compensation | 264 | 197 |
Miscellaneous | $ 2 | $ 80 |

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