Note 3 - Acquisitions	12 Months Ended
Dec. 31, 2015
Business Combinations [Abstract]
Note 3 - Acquisitions	Note 3 – Acquisition On January 13, 2016, Ultralife UK Limited (the “Merger Subsidiary”), a U.K. corporation and the Company’s wholly-owned subsidiary, completed the acquisition of all of the outstanding stock of Accutronics Limited (“Accutronics”), a U.K. corporation based in Newcastle-under-Lyme, U.K., from Intrinsic Equity Limited, Catapult Growth Fund Limited Partnership, MJF Pension Trustees Limited, Robert Andrew Phillips and Michael Allen (collectively, the “Sellers”). There are no material relationships between the Company or Merger Subsidiary and any of the Sellers, other than pertaining to this acquisition. Accutronics is a leading independent designer and manufacturer of smart batteries and charger systems for high-performance, feature-laden portable and handheld electronic devices. Accutronics will be included in our Battery & Energy Products Segment. We acquired Accutronics to advance our strategy of commercial revenue diversification, to expand our geographical penetration, and to achieve revenue growth from new product development. We expect substantial sales synergies between Accutronics and our existing commercial battery business as we cross-sell our existing products and acquired Accutronics’ products to our respective customer bases. The acquisition was completed pursuant to the terms of a Share Purchase Agreement dated January 13, 2016, by and among the Merger Subsidiary and the Sellers. The Merger Subsidiary paid an aggregate purchase price of £7.708 million (approximately $11.2 million) in cash, including a net working capital/debt adjustment in the amount of £.133 million (approximately $.2 million), and in exchange the Merger Subsidiary received all of the outstanding shares of Accutronics stock. Monies to fund the purchase price were advanced to the Merger Subsidiary from the Company’s general corporate funds. The final allocation of the purchase price to the assets and liabilities acquired has not yet been completed.

Note 3 - Acquisitions

12 Months Ended

Dec. 31, 2015

Note 3 – Acquisition

On January 13, 2016, Ultralife UK Limited (the “Merger Subsidiary”), a U.K. corporation and the Company’s wholly-owned subsidiary, completed the acquisition of all of the outstanding stock of Accutronics Limited (“Accutronics”), a U.K. corporation based in Newcastle-under-Lyme, U.K., from Intrinsic Equity Limited, Catapult Growth Fund Limited Partnership, MJF Pension Trustees Limited, Robert Andrew Phillips and Michael Allen (collectively, the “Sellers”). There are no material relationships between the Company or Merger Subsidiary and any of the Sellers, other than pertaining to this acquisition.

Accutronics is a leading independent designer and manufacturer of smart batteries and charger systems for high-performance, feature-laden portable and handheld electronic devices. Accutronics will be included in our Battery & Energy Products Segment. We acquired Accutronics to advance our strategy of commercial revenue diversification, to expand our geographical penetration, and to achieve revenue growth from new product development. We expect substantial sales synergies between Accutronics and our existing commercial battery business as we cross-sell our existing products and acquired Accutronics’ products to our respective customer bases.

The acquisition was completed pursuant to the terms of a Share Purchase Agreement dated January 13, 2016, by and among the Merger Subsidiary and the Sellers. The Merger Subsidiary paid an aggregate purchase price of £7.708 million (approximately $11.2 million) in cash, including a net working capital/debt adjustment in the amount of £.133 million (approximately $.2 million), and in exchange the Merger Subsidiary received all of the outstanding shares of Accutronics stock. Monies to fund the purchase price were advanced to the Merger Subsidiary from the Company’s general corporate funds. The final allocation of the purchase price to the assets and liabilities acquired has not yet been completed.