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Note 9 - Business Segment Information - Segment Activity (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Revenue | $ 158,644 | $ 131,840
Segment contribution | 9,475 | 129
Other expense, net | 358 | 575
Income tax benefit | 1,951 | (326)
Non-controlling interest | (31) | (1)
Net loss attributable to Ultralife | 7,197 | (119)
Total assets | 178,276 | 168,430
Total assets | 178,276 | 168,430
Capital expenditures | 2,552 | 1,679
Goodwill | 37,571 | 37,428
Depreciation and amortization of intangible assets | 3,911 | 4,459
Stock-based compensation | 528 | 776
Battery & Energy Products Segment [Member] |  |
Revenue | 129,953 | 119,995
Segment contribution | 30,775 | 26,154
Total assets | 124,411 | 117,017
Total assets | 124,411 | 117,017
Capital expenditures | 2,064 | 1,371
Goodwill | 26,078 | 25,935
Depreciation and amortization of intangible assets | 3,336 | 3,761
Stock-based compensation | 336 | 396
Communications Systems Segment [Member] |  |
Revenue | 28,691 | 11,845
Segment contribution | 8,425 | 3,246
Total assets | 28,873 | 29,424
Total assets | 28,873 | 29,424
Capital expenditures | 118 | 81
Goodwill | 11,493 | 11,493
Depreciation and amortization of intangible assets | 183 | 261
Stock-based compensation | 74 | 82
Corporate Segment [Member] |  |
Revenue | 0 | 0
Segment contribution | (29,725) | (29,271)
Other expense, net | 358 | 575
Income tax benefit | 1,951 | (326)
Non-controlling interest | (31) | (1)
Total assets | 24,992 | 21,989
Total assets | 24,992 | 21,989
Capital expenditures | 370 | 227
Goodwill | 0 | 0
Depreciation and amortization of intangible assets | 392 | 437
Stock-based compensation | $ 118 | $ 298

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