Ultralife (ULBI) 10-K/A15 Feb 192018 FY Annual report (amended)Financial data

Company Profile

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	Dec. 31, 2018	Feb. 06, 2019	Jun. 29, 2018
Document Information [Line Items]
Entity Registrant Name	Ultralife Corp
Entity Central Index Key	875,657
Trading Symbol	ulbi
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Common Stock, Shares Outstanding (in shares)		15,659,318
Entity Public Float			$ 96,303,216
Document Type	10-K/A
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Amendment Flag	true
Amendment Description	This Amendment No. 1 to the Annual Report on Form 10-K of Ultralife Corporation (the “Company”) for the year ended December 31, 2018 as filed with the Securities and Exchange Commission on February 7, 2019 (the “Original Form 10-K”) is being filed for the sole purpose of amending the cover page to clarify that, as of February 6, 2019, there were 15,659,318 shares of the Company’s common stock outstanding. On the cover page of the Original Form 10-K, the Company’s 4,399,850 treasury shares (shares issued but not outstanding) as of February 6, 2019 were inadvertently included in the number of shares of the Company’s common stock outstanding. This Amendment No. 1 does not amend, modify or update the financial position, results of operations, cash flows, or other disclosures in the Original Form 10-K, nor does it reflect events occurring after the filing of the Original Form 10-K. Accordingly, this Amendment No. 1 should be read in conjunction with the Original Form 10-K.
Entity Shell Company	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Cash	$ 25,583	$ 18,241
Restricted Cash	351	89
Trade Accounts Receivable, Net of Allowance for Doubtful Accounts of $296 and $292, Respectively	16,015	14,657
Inventories, Net	22,843	26,326
Prepaid Expenses and Other Current Assets	2,429	2,603
Total Current Assets	67,221	61,916
Property, Equipment and Improvements, Net	10,744	7,570
Goodwill	20,109	20,458
Other Intangible Assets, Net	6,504	7,085
Deferred Income Taxes, Net	15,444	32
Security Deposits and Other Non-Current Assets	82	125
Total Assets	120,104	97,186
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts Payable	9,919	8,787
Accrued Compensation and Related Benefits	1,494	2,413
Accrued Expenses and Other Current Liabilities	3,413	2,871
Income Taxes Payable	121	168
Total Current Liabilities	14,947	14,239
Deferred Income Taxes, Net	591	3,867
Other Non-Current Liabilities	32	31
Total Liabilities	15,570	18,137
Commitments and Contingencies (Note 5)
Shareholders' Equity:
Preferred Stock – Par Value $.10 Per Share; Authorized 1,000,000 Shares; None Issued
Common Stock – Par Value $.10 Per Share; Authorized 40,000,000 Shares; Issued – 20,053,335 Shares and 19,670,928 Shares, Respectively; Outstanding – 15,920,585 Shares and 15,651,217 Shares, Respectively	2,005	1,966
Capital in Excess of Par Value	182,630	180,211
Accumulated Deficit	(57,964)	(82,894)
Accumulated Other Comprehensive Loss	(2,786)	(1,611)
Treasury Stock - at Cost; 4,132,750 Shares and 4,019,711 Shares, respectively	(19,266)	(18,469)
Total Ultralife Corporation Equity	104,619	79,203
Non-Controlling Interest	(85)	(154)
Total Shareholders’ Equity	104,534	79,049
Total Liabilities and Shareholders' Equity	$ 120,104	$ 97,186

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Trade accounts receivable, allowance for doubtful accounts	$ 296	$ 292
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	20,053,335	19,670,928
Common stock, shares outstanding (in shares)	15,920,585	15,651,217
Treasury stock, shares (in shares)	4,132,750	4,019,711

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Revenues	$ 87,190	$ 85,531
Cost of Products Sold	61,607	59,299
Gross Profit	25,583	26,232
Operating Expenses:
Research and Development	4,508	4,737
Selling, General and Administrative	14,520	15,019
Total Operating Expenses	19,028	19,756
Operating Income	6,555	6,476
Other Expense (Income):
Interest and Financing Expense	63	183
Miscellaneous	(121)	(2)
Income Before Income Taxes	6,613	6,295
Income Tax Benefit (Expenses)	18,386	1,369
Net Income	24,999	7,664
Net Income Attributable to Non-Controlling Interest	69	16
Net Income Attributable to Ultralife Corporation	24,930	7,648
Other Comprehensive (Loss) Income:
Foreign Currency Translation Adjustments	(1,175)	1,469
Comprehensive Income Attributable to Ultralife Corporation	$ 23,755	$ 9,117
Net Income Per Share Attributable to Ultralife Corporation Common Shareholders – Basic: (in dollars per share)	$ 1.57	$ 0.49
Net Income Per Share Attributable to Ultralife Corporation Common Shareholders – Diluted: (in dollars per share)	$ 1.53	$ 0.48
Weighted Average Shares Outstanding – Basic (in shares)	15,882	15,528
Weighted Average Shares Outstanding – Diluted (in shares)	16,347	15,858

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2016	19,324,723
Balance at Dec. 31, 2016	$ 1,932	$ 178,163	$ (3,080)	$ (90,542)	$ (18,443)	$ (170)	$ 67,860
Stock Option Exercises (in shares)	333,305						333,305
Stock Option Exercises	$ 33	1,396					$ 1,429
Tax Withholdings on Option Exercises					(26)		(26)
Stock-Based Compensation -Stock Options		642					642
Stock-Based Compensation -Restricted Stock		11					11
Vesting of Restricted Shares (in shares)	12,900
Vesting of Restricted Shares	$ 1	(1)
Foreign Currency Translation Adjustments			1,469				1,469
Net Income				7,648		16	$ 7,664
Balance (in shares) at Dec. 31, 2017	19,670,928						15,651,217
Balance at Dec. 31, 2017	$ 1,966	180,211	(1,611)	(82,894)	(18,469)	(154)	$ 79,049
Stock Option Exercises (in shares)	382,407						422,793
Stock Option Exercises	$ 39	1,529					$ 1,568
Tax Withholdings on Option Exercises					(55)		(55)
Stock-Based Compensation -Stock Options		817					817
Stock-Based Compensation -Restricted Stock		73					73
Foreign Currency Translation Adjustments			(1,175)				(1,175)
Net Income				24,930		69	24,999
Share Repurchases					(742)		$ (742)
Balance (in shares) at Dec. 31, 2018	20,053,335						15,920,585
Balance at Dec. 31, 2018	$ 2,005	$ 182,630	$ (2,786)	$ (57,964)	$ (19,266)	$ (85)	$ 104,534

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
Consolidated Statements of Cash Flows - USD ($)	Dec. 31, 2018	Dec. 31, 2017
OPERATING ACTIVITIES:
Net Income	$ 24,999,000	$ 7,664,000
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation	1,972,000	2,005,000
Amortization of Intangible Assets	397,000	422,000
Amortization of Financing Fees	36,000	52,000
Stock-Based Compensation	890,000	653,000
Deferred Income Tax Expense	(18,643,000)	(1,669,000)
Changes in operating assets and liabilities:
Accounts Receivable	(1,511,000)	(1,300,000)
Inventories	3,186,000	(2,537,000)
Prepaid Expenses and Other Assets	373,000	(673,000)
Income taxes receivable and payable	9,000	(8,000)
Accounts Payable and Other Liabilities	(822,000)	2,661,000
Net Cash Provided by Operating Activities	10,886,000	7,270,000
INVESTING ACTIVITIES:
Cash Paid for Property, Equipment and Improvements	(4,185,000)	(1,392,000)
Net Cash Used in Investing Activities	(4,185,000)	(1,392,000)
FINANCING ACTIVITIES:
Proceeds from Exercise of Stock Options	1,568,000	1,429,000
Tax Withholdings on Stock-Based Awards	(55,000)	(26,000)
Proceeds from Government Grant	397,000
Cash Paid to Repurchase Treasury Stock	(742,000)
Net Cash Provided by (Used in) Financing Activities	1,168,000	1,403,000
Effect of Exchange Rate Changes on Cash	(265,000)	343,000
INCREASE (DECREASE) IN CASH	7,604,000	7,624,000
Cash, Beginning of Year	18,330,000	10,706,000
Cash, End of Year	25,934,000	18,330,000
Supplemental Cash Flow Information:
Construction in Process in Accounts Payable	1,616,000	87,000
Income Taxes Paid	220,000	345,000
Interest Paid	$ 132,000	$ 102,000

Note 1 - Summary of Operations

Note 1 - Summary of Operations and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Notes to Financial Statements
Business Description and Accounting Policies [Text Block]	Note 1 a. Description of Business As used in this annual report, unless otherwise indicated, the terms “we”, “our” and “us” refer to Ultralife Corporation (“Ultralife”) and includes our wholly-owned subsidiaries, ABLE New Energy Co., Limited and its wholly-owned subsidiary ABLE New Energy Co.; Ltd; Ultralife UK LTD and its wholly-owned subsidiary, Accutronics Ltd; Ultralife Batteries (UK) Ltd.; and our majority-owned joint venture Ultralife Batteries India Private Limited. We offer products and services ranging from power solutions to communications and electronics systems. Through our engineering and collaborative approach to problem solving, we serve government, defense and commercial customers across the globe. We design, manufacture, install and maintain power and communications systems including: rechargeable and non-rechargeable batteries, charging systems, communications and electronics systems and accessories, and custom engineered systems. We sell our products worldwide through a variety of trade channels, including original equipment manufacturers (“OEMs”), industrial and defense supply distributors, and directly to U.S. and international defense departments. b. Principles of Consolidation The consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and include the accounts of Ultralife Corporation, our wholly-owned subsidiaries, Ultralife Batteries (UK) Ltd., Ultralife UK LTD, and its wholly-owned subsidiary Accutronics Ltd, ABLE New Energy Co., Limited and its wholly-owned subsidiary ABLE New Energy Co., Ltd. (“ABLE” collectively), and our majority-owned subsidiary Ultralife Batteries India Private Limited (“India JV”). Intercompany accounts and transactions have been eliminated in consolidation. c. Management's Use of Judgment and Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at year end and the reported amounts of revenues and expenses during the reporting period. Key areas affected by estimates include: (a) carrying value of goodwill and intangible assets; (b) reserves for deferred tax assets, excess and obsolete inventory, warranties, and bad debts; (c) valuation of assets acquired and liabilities assumed in business combinations; (d) various expense accruals; and (e) stock-based compensation. Our actual results could differ from these estimates. d. Reclassifications Certain items previously reported in specific financial statement captions are reclassified to conform to the current presentation. There were no December 31, 2018 2017. e . Cash Our cash balances may not not f. Accounts Receivable and Allowance for Doubtful Accounts We extend credit to our customers in the normal course of business. We perform ongoing credit evaluations and generally do not 30 g. Inventories Inventories are stated at the lower of cost or net realizable value with cost determined under the first first h. Property, Plant and Equipment Property, plant and equipment are stated at cost. Depreciation and amortization are computed using the straight-line method over the estimated useful lives. Estimated useful lives are as follows (in years): Buildings 10 – 20 Machinery and Equipment 5 – 10 Furniture and Fixtures 3 – 10 Computer Hardware and Software 3 – 5 Leasehold Improvements Lesser of useful life or lease term Betterments, renewals and extraordinary repairs that extend the life of the assets are capitalized. Other repairs and maintenance costs are expensed when incurred. When disposed, the cost and accumulated depreciation applicable to assets retired are removed from the accounts and the gain or loss on disposition is recognized in operating income. i. Long-Lived Assets, Goodwill and Intangibles We assess all of our long-lived assets for impairment when events or circumstances indicate that their carrying amounts may not no The purchase price paid to effect an acquisition is allocated to the acquired tangible and intangible assets and liabilities at fair value. We do not The quantitative impairment test for goodwill consists of a comparison of the fair value of the reporting unit with the carrying amount of the reporting unit to which it is assigned. If the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not second j. Translation of Foreign Currency The financial statements of our foreign subsidiaries are translated from the functional currency into U.S. dollar equivalents, with translation adjustments recorded as the sole component of accumulated other comprehensive loss. Exchange gains and losses related to foreign currency transactions and balances denominated in currencies other than the functional currency are recognized in net income. k . Revenue Recognition Effective January 1, 2018, 2014 09 606 606 not no 9 Revenues are generated from the sale of products. Performance obligations are met and revenue is recognized upon transfer of control to the customer, which is generally upon shipment. When contract terms require transfer of control upon delivery at a customer’s location, revenue is recognized on the date of delivery. Revenue is measured as the amount of consideration we expect to receive in exchange for shipped product. Sales, value-added and other taxes billed and collected from customers are excluded from revenue. Customers, including distributors, do not no Revenues recognized from prior period performance obligations for the year ended December 31, 2018 not As of December 31, 2018, no one 606, Deferred revenue, unbilled revenue and deferred contract costs recorded on our consolidated balance sheets as of December 31, 2018 2017 not l. Warranty Reserves We generally offer standard warranties against product defects. We do not m. Shipping and Handling Costs Costs incurred by us related to shipping and handling are included in cost of products sold. Amounts charged to customers pertaining to these costs are reflected as revenue. n. Sales Commissions Sales commissions are expensed as incurred for contracts with an expected duration of one no December 31, 2018. o. Research and Development Research and development expenditures are charged to operations as incurred. The majority of research and development expenses pertain to salaries and benefits, developmental supplies, depreciation and other contracted services. For the years ended December 31, 2018 2017, $4,905 $5,142, $397 $405, $397 $405 December 31, 2018 2017, p. Environmental Costs Environmental expenditures that relate to current operations are expensed. Remediation costs that relate to an existing condition caused by past operations are accrued when it is probable that these costs will be incurred and can be reasonably estimated. q. Income Taxes We account for income taxes using the asset and liability method. Under this method, deferred tax assets and liabilities are determined based on differences between financial reporting and tax basis of assets and liabilities and are measured using the enacted tax rates and laws that are expected to be in effect when the differences are expected to reverse. Pursuant to ASC 740, not not, r. Concentration Related to Customers and Suppliers We have one 16% 18% 2018 2017, no 10% Currently, we do not We generally do not 2018 2017, not Certain materials and components used in our products are available only from a single or a limited number of suppliers. As such, some materials and components could become in short supply resulting in limited availability and/or increased costs. Additionally, we may s. Fair Value Measurements and Disclosures Fair value is defined as the price that would be received for an asset or the exit price that would be paid to transfer a liability in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three Level 1: Quoted prices in active markets for identical assets or liabilities. Level 2: Observable inputs, other than Level 1 not Level 3: Unobservable inputs supported by little or no The fair value of financial instruments approximated their carrying values at December 31, 2018 2017. t. Earnings Per Share Basic earnings per share (“EPS”) is computed by dividing net income attributable to Ultralife Corporation by the weighted average shares of common stock outstanding for the period. Diluted EPS reflects the assumed exercise and conversion of dilutive outstanding stock options and unvested restricted stock, if any, applying the treasury stock method. For the year ended December 31, 2018, 1,127,837 17,500 465,004 448,250 December 31, 2018 For the year ended December 31, 2017, 1,035,711 330,676 no December 31, 2017. 824,500 December 31, 2017 u. Stock-Based Compensation We have various stock-based employee compensation plans that are described more fully in Note 6. v. Segment Reporting We have two w. Recent Accounting Pronouncements In May 2014, 2014 09 606 606 December 15, 2017, 606 January 1, 2018. 606 not no 1 9. In November 2016, 2016 18, 230 December 31, 2017, January 1, 2018. no In August 2016, 2016 15, 230 eight December 15, 2017, January 1, 2018. not In May 2017, 2017 09, 718 718. December 15, 2017 January 1, 2018. not In October 2016, 2016 16, 740 December 15, 2017, January 1, 2018. not In March 2018, 2018 05, 740 No. 118”. December 2017 No. 118, 118” 118 118 7 In February 2016, 2016 02, not December 15, 2018 January 1, 2019. not In January 2017, 2017 04, 350 two December 15, 2019

Note 2 - Share Repurchase Progr

Note 2 - Share Repurchase Program	12 Months Ended
Note 2 - Share Repurchase Program	Dec. 31, 2018
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	Note 2 On October 31, 2018, November 1, 2018, 2.5 not twelve Under the Share Repurchase Program, shares may may 10b5 1 1934. may not 10b 18, In 2018, 105,674 $742. Subsequent to December 31, 2018 February 6, 2019, 267,100 372,774 $2,697.

Note 3 - Supplemental Balance S

Note 3 - Supplemental Balance Sheet Information	12 Months Ended
Note 3 - Supplemental Balance Sheet Information	Dec. 31, 2018
Notes to Financial Statements
Supplemental Balance Sheet Disclosures [Text Block]	Note 3 a. Cash and Restricted Cash The Company had cash and restricted cash totaling $25,934 $18,330 December 31, 2018 2017, December 31, December 31, 2018 2017 Cash $ 25,583 $ 18,241 Restricted Cash 351 89 Total $ 25,934 $ 18,330 As of December 31, 2018, December 31, 2018, $97 December 31, 2018 2017 third b. Inventory, Net Inventories are stated at the lower of cost or net realizable value with cost determined under the first first December 31, 2018 2017 Raw Materials $ 13,274 $ 14,606 Work in Process 2,016 2,013 Finished Products 7,553 9,707 Total $ 22,843 $ 26,326 c. Property, Plant and Equipment Major classes of property, plant and equipment consisted of the following: December 31, 2018 2017 Land $ 123 $ 123 Buildings and Leasehold Improvements 8,267 7,858 Machinery and Equipment 51,261 50,852 Furniture and Fixtures 2,058 2,005 Computer Hardware and Software 5,590 5,338 Construction in Progress 4,302 535 71,601 66,711 Less – Accumulated Depreciation (60,857 ) (59,141 ) Total $ 10,744 $ 7,570 Estimated costs to complete construction-in-progress as of December 31, 2018 2017 $2,870 $5,136, Depreciation expense was $1,972 $2,005 December 31, 2018 2017, d. Goodwill and Other Intangible Assets The Company performed its annual impairment tests of goodwill and other indefinite-lived intangible assets as of the first fourth 2018 2017. The Company performed a quantitative impairment test of its four not 1 2 3 The Company performed a quantitative impairment test of its four not 1 2 3 As a result of the impairment tests performed for 2018 2017, no 10%. There is a possibility that our goodwill and other intangible assets could be impaired in the future should there be a significant change in our internal forecasts and other assumptions used in our impairment analysis. The following table summarizes the goodwill activity by segment for the years ended December 31, 2018 2017: Battery & Energy Products Communi- cations Systems Total Balance – January 1, 2017 $ 8,472 $ 11,493 $ 19,965 Effect of Foreign Currency Translation 493 - 493 Balance – December 31, 2017 8,965 11,493 20,458 Effect of Foreign Currency Translation (349 ) - (349 ) Balance – December 31, 2018 $ 8,616 $ 11,493 $ 20,109 The composition of intangible assets was: December 31, 2018 Cost Accumulated Amortization Net Trademarks $ 3,405 $ - $ 3,405 Customer Relationships 6,471 4,392 2,079 Patents and Technology 5,486 4,725 761 Distributor Relationships 377 377 - Trade Name 370 111 259 Total Other Intangible Assets $ 16,109 $ 9,605 $ 6,504 December 31, 2017 Cost Accumulated Amortization Net Trademarks $ 3,411 $ - $ 3,411 Customer Relationships 6,618 4,208 2,410 Patents and Technology 5,545 4,595 950 Distributor Relationships 377 377 - Trade Name 393 79 314 Total Other Intangible Assets $ 16,344 $ 9,259 $ 7,085 The change in the cost value of other intangible assets is a result of the effect of foreign currency translations. Amortization of other intangible assets was included in the following financial statement captions: Year ended December 31, 2018 2017 Research and Development Expense $ 147 $ 165 Selling, General and Administrative Expense 250 257 Total $ 397 $ 422 Future amortization expense of amortizable intangible assets will be approximately $362, $349, $330, $315 $312 December 31, 2019 2023,

Note 4 - Debt

Note 4 - Debt	12 Months Ended
Note 4 - Debt	Dec. 31, 2018
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 4 Credit Facilities On May 31, 2017, $30,000 $1,500 may $50,000 six May 30, 2020. May 24, 2017 ( The Credit Facility provides the Company with an aggregate of up to $30,000 may no not Interest will accrue on outstanding indebtedness under the Credit Agreement at the Overnight LIBOR Rate plus the applicable margin, or at the Base Rate plus the applicable margin, as selected by the Company. Beginning April 2, 2018 Consolidated Senior Leverage Ratio Applicable Basis Points for Overnight LIBOR Loans Applicable Basis Points for Base Rate Loans Applicable Basis Points for Unused Fee Less than 1.50 to 1.00 185 (50) 20 Greater than or equal to 1.50 to 1.00 but less than 2.50 to 1.00 200 (25) 15 Greater than or equal to 2.50 to 1.00 215 0 10 The Company must pay a fee on its unused availability equal to the applicable margin for the Unused Fee and customary letter of credit fees. In addition to the affirmative and negative covenants, the Company must maintain a fixed charge coverage ratio of 1.15 1.0, four $40,000, December 31, 2018. Any outstanding borrowings must be repaid upon expiration of the term of the Credit Facility. Payments must be made during the term to the extent outstanding borrowings exceed the maximum amount then permitted to be drawn as borrowings under the Credit Facility and from the proceeds of certain transactions. Upon the occurrence of an event of default, the outstanding obligations of the Company under the Credit Facility may As of December 31, 2018, no no

Note 5 - Commitments and Contin

Note 5 - Commitments and Contingencies	12 Months Ended
Note 5 - Commitments and Contingencies	Dec. 31, 2018
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 5 a. Indemnity Our organizational documents provide that our directors or officers will be reimbursed for all expenses, to the fullest extent permitted by law arising out of their performance. b. Purchase Commitments As of December 31, 2018, $2,848 c. Operating Leases We lease various buildings, machinery, land, automobiles and office equipment. Rental expenses for all operating leases were approximately $716 $660 December 31, 2018 2017, December 31, 2018 2019 2020 2021 2022 2023 $ 564 $ 404 $ 142 $ - $ - d. China Our operating facility in China presents risks including, but not 9 e. Employment Contracts We have an employment contract with Michael D. Popielec, our President and Chief Executive Officer, which remains in effect until terminated by either party. This agreement provides for a base salary, as adjusted for increases at the discretion of our Board of Directors, and includes incentive bonuses based upon attainment of specified quantitative and qualitative performance goals. This agreement also provides for severance payments in the event of specified events of termination of employment. In addition, this agreement provides for a lump sum payment in the event of termination of employment in connection with a change in control. As part of our employment commencement process, employees are required to enter into agreements providing for confidentiality of certain information and the assignment of rights to inventions made by them while employed by us. These agreements also contain certain non-competition and non-solicitation provisions effective during the employment term and for varying periods thereafter depending on position and location. There can be no f. Product Warranties We estimate future warranty costs to be incurred for product failure rates, material usage and service costs in the development of our warranty obligations. Estimated future costs are based on actual past experience and are generally estimated as a percentage of sales over the warranty period. Changes in our product warranty liability during the years ended December 31, 2018 2017 2018 2017 Balance, January 1 $ 149 $ 172 Provision for warranties issued 7 84 Settlements made (61 ) (107 ) Balance, December 31 $ 95 $ 149 g . Legal Matters We are subject to legal proceedings and claims that arise in the normal course of business. We believe that the final disposition of such matters will not Dreamliner Litigation In July 2013, 787 2001, On May 4, 2015, 2013 This lawsuit has now been resolved ( February 2018),

Note 6 - Shareholders' Equity

Note 6 - Shareholders' Equity	12 Months Ended
Note 6 - Shareholders' Equity	Dec. 31, 2018
Notes to Financial Statements
Shareholders' Equity and Share-based Payments [Text Block]	Note 6 a. Stock-Based Compensation Expense We recorded non-cash stock compensation expense in each period as follows: 2018 2017 Stock Options $ 817 $ 642 Restricted Stock Grants 73 11 Total $ 890 $ 653 These are more fully discussed as follows: b. Stock Options We have various stock-based employee compensation plans, for which compensation cost is recognized in the financial statements. The cost is measured at the grant date, based on the estimated fair value of the award, and is recognized as an expense over the employee’s requisite service period (generally the vesting period of the equity award). Our shareholders have approved various equity-based plans that permit the grant of stock options, restricted stock and other equity-based awards. In addition, our shareholders have approved the grant of stock options outside of these plans. In June 2004, 2004 “2004 750,000 2006, 2008, 2011, 2013, 2004 2,900,000. In June 2014, 2014 “2014 2004 June 10, 2014. 2014 1,750,000 2014 no 800,000 may 2014 may June 2, 2024. Stock options granted under the LTIPs are either Incentive Stock Options (“ISOs”) or Non-Qualified Stock Options (“NQSOs”). Key employees are eligible to receive ISOs and NQSOs; however, directors and consultants are eligible to receive only NQSOs. Most ISOs vest over a three seventh December 31, 2018, 727,649 2004 848,438 2014 On December 30, 2010, 2004 50,000 $6.42, 12,500 four December 30, 2011; ( 250,000 $6.42, 62,500 four December 30, 2011; ( 200,000 $10.00, $10.00 15 30 50,000 four 200,000 $15.00, $15.00 15 30 50,000 four 2004 June 7, 2011. All such options in items (i) and (ii) were due to expire on December 30, 2017. April 19, 2017, December 30, 2020. 718, second 2017, $193 All such options in items (iii) and (iv) were due to expire as of the later of December 30, 2017 five no December 30, 2020. July 25, 2018, first $10.00 15 30 third 2018 December 30, 2020. 718, third 2018, $182 not December 31, 2018. On January 3, 2011, 50,000 $6.58 2004 12,500 four December 30, 2011. December 30, 2017. As of December 31, 2018, $521 0.9 We use the Black-Scholes option-pricing model to estimate fair value of stock-based awards. The following weighted average assumptions were used to value options granted during the years ended December 31, 2018 2017: Years Ended December 31, 2018 2017 Risk-free interest rate 2.6 % 1.7 % Volatility factor 46.8 % 50.0 % Weighted average expected life (years) 5.0 5.0 Forfeiture rate 10.0 % 10.0 % Dividends 0.0 % 0.0 % We used a Monte Carlo simulation option-pricing model to estimate the fair value of market performance stock-based awards, of which there were no December 31, 2018 2017. We calculate expected volatility for stock options by taking an average of historical volatility over the expected term. The computation of expected term was determined based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards and vesting schedules. The interest rate for periods within the contractual life of the award is based on the U.S. Treasury yield in effect at the time of grant. Forfeiture rates are calculated by dividing unvested shares forfeited by beginning shares outstanding. The pre-vesting forfeiture rate is calculated yearly and is determined using a historical twelve The following tables summarize data for the stock options issued by us: Year Ended December 31, 2018 Number of Shares Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Shares under Option – January 1 1,860,211 $ 5.96 Options Granted 217,500 9.68 Options Exercised (422,793 ) 4.49 Options Forfeited or Expired (78,831 ) 11.75 Shares under option – December 31 1,576,087 $ 6.58 3.50 $ 1,946 Vested and Expected to Vest - December 31 1,475,570 $ 6.56 3.37 $ 1,851 Options Exercisable – December 31 1,064,127 $ 5.89 2.69 $ 1,565 Year Ended December 31, 2017 Number of Shares Weighted Average Exercise Price Per Share Shares under Option – January 1 2,323,581 $ 6.22 Options Granted 244,750 5.60 Options Exercised (333,305 ) 4.29 Options Forfeited or Expired (374,815 ) 8.11 Shares under option – December 31 1,860,211 $ 5.06 Options Exercisable – December 31 1,649,594 $ 4.63 The following table represents additional information about stock options outstanding at December 31, 2018: Option Outstanding Options Exercisable Range of Exercise Prices Number of Outstanding Options – December 31, 2018 Weighted- Average Remaining Contractual Life Weighted- Average Exercise Price Number of Options Exercisable at December 31, 2018 Weighted- Average Exercise Price $3.22 - $3.99 346,148 2.56 3.79 346,148 $ 3.79 $4.00 - $5.99 451,023 4.72 4.94 217,979 4.72 $6.00 - $9.99 528,916 3.79 7.72 300,000 6.42 $10.00 - $15.00 250,000 2.00 11.00 200,000 10.00 $3.22 - $15.00 1,576,087 3.50 6.58 1,064,127 $ 5.89 The weighted average fair value of options granted during the years ended December 31, 2018 2017 $4.22 $2.47, December 31, 2018 2017 $1,722 $588, Cash received from option exercises under our stock-based compensation plans for the years ended December 31, 2018 2017 $1,568 $1,429, c. Restricted Stock Awards During 2014, 49,200 2014 three $3.24 $11 2017 September 2017, 12,900 3,959 $0 December 31, 2018 2017. In January 2018, 17,500 three $7.16 $73 2018 $52 December 31, 2018. d. Reserved Shares There were 726,858 December 31, 2018.

Note 7 - Income Taxes

Note 7 - Income Taxes	12 Months Ended
Note 7 - Income Taxes	Dec. 31, 2018
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 7 For the years ended December 31, 2018 2017, $18,386 $1,369, Years Ended December 31, 2018 2017 Current: Federal $ - $ - State - - Foreign 257 300 257 300 Deferred: Federal (18,514 ) (1,717 ) State - 55 Foreign (129 ) (7 ) (18,643 ) (1,669 ) Total income tax provision $ (18,386 ) $ (1,369 ) The income tax benefit for 2018 $18,652 December 31, 2018. 2017 one $1,939 As of December 31, 2018, 2015 $63,388, 2019 2035, $1,817, 2028 2037. not As of December 31, 2018 2017, $10,220, not not, may no December 31, 2018 2017, not not Deferred income taxes reflect the net tax effect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amount used for income tax purposes. Significant components of our deferred tax assets and liabilities are as follows: Years Ended December 31, 2018 2017 Deferred Tax Assets: Property, Plant and Equipment $ 168 $ 44 Net Operating Loss Carryforwards 15,622 16,838 Tax Credit Carryforwards 1,817 1,837 Intangible Assets 1,231 1,535 Accrued Expenses, Reserves and Other 1,838 1,359 Total Deferred Tax Assets 20,676 21,613 Valuation Allowance for Deferred Tax Assets (1,942 ) (21,604 ) Net Deferred Tax Assets 18,734 9 Deferred Tax Liabilities: Other (25 ) (38 ) Intangible Assets (3,856 ) (3,806 ) Total Deferred Tax Liabilities (3,881 ) (3,844 ) Net Deferred Tax Assets (Liabilities) $ 14,853 $ (3,835 ) Net deferred tax assets (liabilities) are comprised of the following balance sheet amounts: Years Ended December 31, 2018 2017 Deferred Tax Assets $ 15,444 $ 32 Deferred Tax Liabilities (591 ) (3,867 ) $ 14,853 $ (3,835 ) For the year ended December 31, 2018, $19,662 December 31, 2018. December 31, 2017, $10,695 On December 22, 2017, not 1 35 21 2 3 December 31, 2017; ( 4 December 31, 2017; 5 The Act reduced the U.S. corporate tax rate to 21 January 1, 2018. 35 21 The Act provided for a one 1986 December 31, 2017. not On December 22, 2017, No. 118 not December 31, 2017. December 31, 2017, December 31, 2018, no Effective January 1, 2017, 2016 09, 718 $1,123 no December 31, 2018, At December 31, 2018, For financial reporting purposes, income from continuing operations before income taxes is as follows: Years Ended December 31, 2018 2017 United States $ 6,226 $ 4,831 Foreign 387 1,464 $ 6,613 $ 6,295 The provision for income taxes differs from the amount of income tax determined by applying the applicable U.S. statutory federal income tax rate to income from continuing operations before income taxes as follows: Years Ended December 31, 2018 2017 Statutory Income Tax Rate 21 % 34 % (Increase) Decrease in Tax Provision Resulting From: Equity Compensation (2.9 ) 0.7 Income Tax Credits (1.0 ) (0.9 ) Foreign Tax Rates 0.3 (3.8 ) Valuation Allowance (297.3 ) (20.9 ) Tax Rate Change - (30.8 ) Other 2.0 (0.1 ) Effective Income Tax Rate (277.9 )% (21.8 )% Accounting for Uncertainty in Income Taxes There were no December 31, 2018 2017. As a result of our operations, we file income tax returns in various jurisdictions including U.S. federal, U.S. state and foreign jurisdictions. We are routinely subject to examination by taxing authorities in these various jurisdictions. Our U.S. tax matters for the years 2000 2018 2000 2018 2010 2018

Note 8 - 401(k) Retirement Bene

Note 8 - 401(k) Retirement Benefit Plan	12 Months Ended
Note 8 - 401(k) Retirement Benefit Plan	Dec. 31, 2018
Notes to Financial Statements
Pension and Other Postretirement Benefits Disclosure [Text Block]	Note 8 401 We maintain a defined contribution 401 401 may, December 31, 2018 2017, 50% first 4% 2% 2018 2017, $204 $181, 401

Note 9 - Business Segment Infor

Note 9 - Business Segment Information	12 Months Ended
Note 9 - Business Segment Information	Dec. 31, 2018
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 9 We report our results in two 9 2018: Battery & Energy Products Communications Systems Corporate Total Revenue $ 70,497 $ 16,693 $ - $ 87,190 Segment Contribution 19,574 6,009 (19,028 ) 6,555 Other Income 58 58 Income Tax Benefit 18,386 18,386 Non-Controlling Interest (69 ) (69 ) Net Income Attributable to Ultralife $ 24,930 Total Assets $ 50,511 $ 26,875 $ 42,718 $ 120,104 Capital Expenditures $ 2,948 $ 614 $ 623 $ 4,185 Goodwill $ 8,616 $ 11,493 - $ 20,109 Depreciation and Amortization of Intangible Assets $ 1,611 $ 375 $ 383 $ 2,369 Stock-Based Compensation $ 333 $ 106 $ 451 $ 890 2017: Battery & Energy Products Communications Systems Corporate Total Revenue $ 69,789 $ 15,742 $ - $ 85,531 Segment Contribution 19,659 6,573 (19,756 ) 6,476 Other Expense (181 ) (181 ) Income Tax Benefit 1,369 1,369 Non-Controlling Interest (16 ) (16 ) Net Income Attributable to Ultralife $ 7,648 Total Assets $ 44,720 $ 32,169 $ 20,297 $ 97,186 Capital Expenditures $ 1,015 $ 212 $ 63 $ 1,290 Goodwill $ 8,965 $ 11,493 - $ 20,458 Depreciation and Amortization of Intangible Assets $ 1,830 $ 430 $ 167 $ 2,427 Stock-Based Compensation $ 301 $ 88 $ 264 $ 653 Long-lived assets (including goodwill and intangible assets) held outside the U.S., principally in the United Kingdom and China, were $11,502 $12,443 December 31, 2018 2017, U.S. and Non-U.S. Revenue Information 1 : 2018: Total Revenue United States Non-United States Battery & Energy Products $ 70,497 $ 37,898 $ 32,599 Communications Systems 16,693 15,156 1,537 Total $ 87,190 $ 53,054 $ 34,136 61 % 39 % 2017: Total Revenue United States Non-United States Battery & Energy Products $ 69,789 $ 33,397 $ 36,392 Communications Systems 15,742 14,217 1,525 Total $ 85,531 $ 47,614 $ 37,917 56 % 44 % 1 may Commercial and Government/Defense Revenue Information: 2018: Total Revenue Commercial Government/ Defense Battery & Energy Products $ 70,497 $ 41,044 $ 29,453 Communications Systems 16,693 - 16,693 Total $ 87,190 $ 41,044 $ 46,146 47 % 53 % 2017: Total Revenue Commercial Government/ Defense Battery & Energy Products $ 69,789 $ 40,790 $ 28,999 Communications Systems 15,742 - 15,742 Total $ 85,531 $ 40,790 $ 44,741 48 % 52 %

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
Significant Accounting Policies (Policies)	Dec. 31, 2018
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	b. Principles of Consolidation The consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and include the accounts of Ultralife Corporation, our wholly-owned subsidiaries, Ultralife Batteries (UK) Ltd., Ultralife UK LTD, and its wholly-owned subsidiary Accutronics Ltd, ABLE New Energy Co., Limited and its wholly-owned subsidiary ABLE New Energy Co., Ltd. (“ABLE” collectively), and our majority-owned subsidiary Ultralife Batteries India Private Limited (“India JV”). Intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates, Policy [Policy Text Block]	c. Management's Use of Judgment and Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at year end and the reported amounts of revenues and expenses during the reporting period. Key areas affected by estimates include: (a) carrying value of goodwill and intangible assets; (b) reserves for deferred tax assets, excess and obsolete inventory, warranties, and bad debts; (c) valuation of assets acquired and liabilities assumed in business combinations; (d) various expense accruals; and (e) stock-based compensation. Our actual results could differ from these estimates.
Reclassification, Policy [Policy Text Block]	d. Reclassifications Certain items previously reported in specific financial statement captions are reclassified to conform to the current presentation. There were no December 31, 2018 2017.
Cash and Cash Equivalents, Policy [Policy Text Block]	e . Cash Our cash balances may not not
Receivables, Policy [Policy Text Block]	f. Accounts Receivable and Allowance for Doubtful Accounts We extend credit to our customers in the normal course of business. We perform ongoing credit evaluations and generally do not 30
Inventory, Policy [Policy Text Block]	g. Inventories Inventories are stated at the lower of cost or net realizable value with cost determined under the first first
Property, Plant and Equipment, Policy [Policy Text Block]	h. Property, Plant and Equipment Property, plant and equipment are stated at cost. Depreciation and amortization are computed using the straight-line method over the estimated useful lives. Estimated useful lives are as follows (in years): Buildings 10 – 20 Machinery and Equipment 5 – 10 Furniture and Fixtures 3 – 10 Computer Hardware and Software 3 – 5 Leasehold Improvements Lesser of useful life or lease term Betterments, renewals and extraordinary repairs that extend the life of the assets are capitalized. Other repairs and maintenance costs are expensed when incurred. When disposed, the cost and accumulated depreciation applicable to assets retired are removed from the accounts and the gain or loss on disposition is recognized in operating income.
Goodwill and Intangible Assets, Policy [Policy Text Block]	i. Long-Lived Assets, Goodwill and Intangibles We assess all of our long-lived assets for impairment when events or circumstances indicate that their carrying amounts may not no The purchase price paid to effect an acquisition is allocated to the acquired tangible and intangible assets and liabilities at fair value. We do not The quantitative impairment test for goodwill consists of a comparison of the fair value of the reporting unit with the carrying amount of the reporting unit to which it is assigned. If the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not second
Foreign Currency Transactions and Translations Policy [Policy Text Block]	j. Translation of Foreign Currency The financial statements of our foreign subsidiaries are translated from the functional currency into U.S. dollar equivalents, with translation adjustments recorded as the sole component of accumulated other comprehensive loss. Exchange gains and losses related to foreign currency transactions and balances denominated in currencies other than the functional currency are recognized in net income.
Revenue Recognition, Policy [Policy Text Block]	k . Revenue Recognition Effective January 1, 2018, 2014 09 606 606 not no 9 Revenues are generated from the sale of products. Performance obligations are met and revenue is recognized upon transfer of control to the customer, which is generally upon shipment. When contract terms require transfer of control upon delivery at a customer’s location, revenue is recognized on the date of delivery. Revenue is measured as the amount of consideration we expect to receive in exchange for shipped product. Sales, value-added and other taxes billed and collected from customers are excluded from revenue. Customers, including distributors, do not no Revenues recognized from prior period performance obligations for the year ended December 31, 2018 not As of December 31, 2018, no one 606, Deferred revenue, unbilled revenue and deferred contract costs recorded on our consolidated balance sheets as of December 31, 2018 2017 not
Guarantees, Indemnifications and Warranties Policies [Policy Text Block]	l. Warranty Reserves We generally offer standard warranties against product defects. We do not
Shipping and Handling Costs [Policy Text Block]	m. Shipping and Handling Costs Costs incurred by us related to shipping and handling are included in cost of products sold. Amounts charged to customers pertaining to these costs are reflected as revenue.
Sales Commissions [Policy Text Block]	n. Sales Commissions Sales commissions are expensed as incurred for contracts with an expected duration of one no December 31, 2018.
Research and Development Expense, Policy [Policy Text Block]	o. Research and Development Research and development expenditures are charged to operations as incurred. The majority of research and development expenses pertain to salaries and benefits, developmental supplies, depreciation and other contracted services. For the years ended December 31, 2018 2017, $4,905 $5,142, $397 $405, $397 $405 December 31, 2018 2017,
Environmental Cost, Expense Policy [Policy Text Block]	p. Environmental Costs Environmental expenditures that relate to current operations are expensed. Remediation costs that relate to an existing condition caused by past operations are accrued when it is probable that these costs will be incurred and can be reasonably estimated.
Income Tax, Policy [Policy Text Block]	q. Income Taxes We account for income taxes using the asset and liability method. Under this method, deferred tax assets and liabilities are determined based on differences between financial reporting and tax basis of assets and liabilities and are measured using the enacted tax rates and laws that are expected to be in effect when the differences are expected to reverse. Pursuant to ASC 740, not not,
Concentration Risk, Credit Risk, Policy [Policy Text Block]	r. Concentration Related to Customers and Suppliers We have one 16% 18% 2018 2017, no 10% Currently, we do not We generally do not 2018 2017, not Certain materials and components used in our products are available only from a single or a limited number of suppliers. As such, some materials and components could become in short supply resulting in limited availability and/or increased costs. Additionally, we may
Fair Value Measurement, Policy [Policy Text Block]	s. Fair Value Measurements and Disclosures Fair value is defined as the price that would be received for an asset or the exit price that would be paid to transfer a liability in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three Level 1: Quoted prices in active markets for identical assets or liabilities. Level 2: Observable inputs, other than Level 1 not Level 3: Unobservable inputs supported by little or no The fair value of financial instruments approximated their carrying values at December 31, 2018 2017.
Earnings Per Share, Policy [Policy Text Block]	t. Earnings Per Share Basic earnings per share (“EPS”) is computed by dividing net income attributable to Ultralife Corporation by the weighted average shares of common stock outstanding for the period. Diluted EPS reflects the assumed exercise and conversion of dilutive outstanding stock options and unvested restricted stock, if any, applying the treasury stock method. For the year ended December 31, 2018, 1,127,837 17,500 465,004 448,250 December 31, 2018 For the year ended December 31, 2017, 1,035,711 330,676 no December 31, 2017. 824,500 December 31, 2017
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	u. Stock-Based Compensation We have various stock-based employee compensation plans that are described more fully in Note 6.
Segment Reporting, Policy [Policy Text Block]	v. Segment Reporting We have two
New Accounting Pronouncements, Policy [Policy Text Block]	w. Recent Accounting Pronouncements In May 2014, 2014 09 606 606 December 15, 2017, 606 January 1, 2018. 606 not no 1 9. In November 2016, 2016 18, 230 December 31, 2017, January 1, 2018. no In August 2016, 2016 15, 230 eight December 15, 2017, January 1, 2018. not In May 2017, 2017 09, 718 718. December 15, 2017 January 1, 2018. not In October 2016, 2016 16, 740 December 15, 2017, January 1, 2018. not In March 2018, 2018 05, 740 No. 118”. December 2017 No. 118, 118” 118 118 7 In February 2016, 2016 02, not December 15, 2018 January 1, 2019. not In January 2017, 2017 04, 350 two December 15, 2019

Note 1 - Summary of Operation_2

Note 1 - Summary of Operations and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Notes Tables
Property, Plant and Equipment, Estimated Useful Life [Table Text Block]	Buildings 10 – 20 Machinery and Equipment 5 – 10 Furniture and Fixtures 3 – 10 Computer Hardware and Software 3 – 5 Leasehold Improvements Lesser of useful life or lease term

Note 3 - Supplemental Balance_2

Note 3 - Supplemental Balance Sheet Information (Tables)	12 Months Ended
Note 3 - Supplemental Balance Sheet Information (Tables)	Dec. 31, 2018
Notes Tables
Cash, Cash Equivalents and Investments [Table Text Block]	December 31, December 31, 2018 2017 Cash $ 25,583 $ 18,241 Restricted Cash 351 89 Total $ 25,934 $ 18,330
Schedule of Inventory, Current [Table Text Block]	December 31, 2018 2017 Raw Materials $ 13,274 $ 14,606 Work in Process 2,016 2,013 Finished Products 7,553 9,707 Total $ 22,843 $ 26,326
Property, Plant and Equipment [Table Text Block]	December 31, 2018 2017 Land $ 123 $ 123 Buildings and Leasehold Improvements 8,267 7,858 Machinery and Equipment 51,261 50,852 Furniture and Fixtures 2,058 2,005 Computer Hardware and Software 5,590 5,338 Construction in Progress 4,302 535 71,601 66,711 Less – Accumulated Depreciation (60,857 ) (59,141 ) Total $ 10,744 $ 7,570
Schedule of Goodwill [Table Text Block]	Battery & Energy Products Communi- cations Systems Total Balance – January 1, 2017 $ 8,472 $ 11,493 $ 19,965 Effect of Foreign Currency Translation 493 - 493 Balance – December 31, 2017 8,965 11,493 20,458 Effect of Foreign Currency Translation (349 ) - (349 ) Balance – December 31, 2018 $ 8,616 $ 11,493 $ 20,109
Schedule of Finite-Lived Intangible Assets [Table Text Block]	December 31, 2018 Cost Accumulated Amortization Net Trademarks $ 3,405 $ - $ 3,405 Customer Relationships 6,471 4,392 2,079 Patents and Technology 5,486 4,725 761 Distributor Relationships 377 377 - Trade Name 370 111 259 Total Other Intangible Assets $ 16,109 $ 9,605 $ 6,504 December 31, 2017 Cost Accumulated Amortization Net Trademarks $ 3,411 $ - $ 3,411 Customer Relationships 6,618 4,208 2,410 Patents and Technology 5,545 4,595 950 Distributor Relationships 377 377 - Trade Name 393 79 314 Total Other Intangible Assets $ 16,344 $ 9,259 $ 7,085
Finite-lived Intangible Assets Amortization Expense [Table Text Block]	Year ended December 31, 2018 2017 Research and Development Expense $ 147 $ 165 Selling, General and Administrative Expense 250 257 Total $ 397 $ 422

Note 4 - Debt (Tables)

Note 4 - Debt (Tables)	12 Months Ended
Note 4 - Debt (Tables)	Dec. 31, 2018
Notes Tables
Interest Rate Margins on Outstanding Debt [Table Text Block]	Consolidated Senior Leverage Ratio Applicable Basis Points for Overnight LIBOR Loans Applicable Basis Points for Base Rate Loans Applicable Basis Points for Unused Fee Less than 1.50 to 1.00 185 (50) 20 Greater than or equal to 1.50 to 1.00 but less than 2.50 to 1.00 200 (25) 15 Greater than or equal to 2.50 to 1.00 215 0 10

Note 5 - Commitments and Cont_2

Note 5 - Commitments and Contingencies (Tables)	12 Months Ended
Note 5 - Commitments and Contingencies (Tables)	Dec. 31, 2018
Notes Tables
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	2019 2020 2021 2022 2023 $ 564 $ 404 $ 142 $ - $ -
Schedule of Product Warranty Liability [Table Text Block]	2018 2017 Balance, January 1 $ 149 $ 172 Provision for warranties issued 7 84 Settlements made (61 ) (107 ) Balance, December 31 $ 95 $ 149

Note 6 - Shareholders' Equity (

Note 6 - Shareholders' Equity (Tables)	12 Months Ended
Note 6 - Shareholders' Equity (Tables)	Dec. 31, 2018
Notes Tables
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]	2018 2017 Stock Options $ 817 $ 642 Restricted Stock Grants 73 11 Total $ 890 $ 653
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Years Ended December 31, 2018 2017 Risk-free interest rate 2.6 % 1.7 % Volatility factor 46.8 % 50.0 % Weighted average expected life (years) 5.0 5.0 Forfeiture rate 10.0 % 10.0 % Dividends 0.0 % 0.0 %
Share-based Compensation, Stock Options, Activity [Table Text Block]	Year Ended December 31, 2018 Number of Shares Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Shares under Option – January 1 1,860,211 $ 5.96 Options Granted 217,500 9.68 Options Exercised (422,793 ) 4.49 Options Forfeited or Expired (78,831 ) 11.75 Shares under option – December 31 1,576,087 $ 6.58 3.50 $ 1,946 Vested and Expected to Vest - December 31 1,475,570 $ 6.56 3.37 $ 1,851 Options Exercisable – December 31 1,064,127 $ 5.89 2.69 $ 1,565 Year Ended December 31, 2017 Number of Shares Weighted Average Exercise Price Per Share Shares under Option – January 1 2,323,581 $ 6.22 Options Granted 244,750 5.60 Options Exercised (333,305 ) 4.29 Options Forfeited or Expired (374,815 ) 8.11 Shares under option – December 31 1,860,211 $ 5.06 Options Exercisable – December 31 1,649,594 $ 4.63
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]	Option Outstanding Options Exercisable Range of Exercise Prices Number of Outstanding Options – December 31, 2018 Weighted- Average Remaining Contractual Life Weighted- Average Exercise Price Number of Options Exercisable at December 31, 2018 Weighted- Average Exercise Price $3.22 - $3.99 346,148 2.56 3.79 346,148 $ 3.79 $4.00 - $5.99 451,023 4.72 4.94 217,979 4.72 $6.00 - $9.99 528,916 3.79 7.72 300,000 6.42 $10.00 - $15.00 250,000 2.00 11.00 200,000 10.00 $3.22 - $15.00 1,576,087 3.50 6.58 1,064,127 $ 5.89

Note 7 - Income Taxes (Tables)

Note 7 - Income Taxes (Tables)	12 Months Ended
Note 7 - Income Taxes (Tables)	Dec. 31, 2018
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Years Ended December 31, 2018 2017 Current: Federal $ - $ - State - - Foreign 257 300 257 300 Deferred: Federal (18,514 ) (1,717 ) State - 55 Foreign (129 ) (7 ) (18,643 ) (1,669 ) Total income tax provision $ (18,386 ) $ (1,369 )
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	Years Ended December 31, 2018 2017 Deferred Tax Assets: Property, Plant and Equipment $ 168 $ 44 Net Operating Loss Carryforwards 15,622 16,838 Tax Credit Carryforwards 1,817 1,837 Intangible Assets 1,231 1,535 Accrued Expenses, Reserves and Other 1,838 1,359 Total Deferred Tax Assets 20,676 21,613 Valuation Allowance for Deferred Tax Assets (1,942 ) (21,604 ) Net Deferred Tax Assets 18,734 9 Deferred Tax Liabilities: Other (25 ) (38 ) Intangible Assets (3,856 ) (3,806 ) Total Deferred Tax Liabilities (3,881 ) (3,844 ) Net Deferred Tax Assets (Liabilities) $ 14,853 $ (3,835 )
Schedule of Net Deferred Tax Liabilities [Table Text Block]	<table border="0" cellpadding="0" cellspacing="0" style="margin-right: 15%; margin-left: 54pt; font-size: 10pt; font-family: "Times New Roman", Times, serif; text-indent: 0px; min-; min-width: 700px;"> <tr style="vertical-align: bottom;"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="6" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">Years Ended December 31,</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> </tr> <tr style="vertical-align: bottom;"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">2018</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 1px;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">2017</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 1px;"> </td> </tr> <tr style="vertical-align: bottom;"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 64%;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Deferred Tax Assets</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">15,444</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">32</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Deferred Tax Liabilities</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"> </td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">(591</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"> </td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">(3,867</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">14,853</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">(3,835</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td> </tr> </table></div>" id="sjs-B6"><div style="display: inline; font-family: times new roman; font-size: 10pt"><table border="0" cellpadding="0" cellspacing="0" style="margin-right: 15%; margin-left: 54pt; font-size: 10pt; font-family: "Times New Roman", Times, serif; text-indent: 0px; min-; min-width: 700px;"> <tr style="vertical-align: bottom;"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="6" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">Years Ended December 31,</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> </tr> <tr style="vertical-align: bottom;"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">2018</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 1px;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">2017</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 1px;"> </td> </tr> <tr style="vertical-align: bottom;"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 64%;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Deferred Tax Assets</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">15,444</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">32</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Deferred Tax Liabilities</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"> </td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">(591</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"> </td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">(3,867</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">14,853</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">(3,835</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td> </tr> </table></div>
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	Years Ended December 31, 2018 2017 United States $ 6,226 $ 4,831 Foreign 387 1,464 $ 6,613 $ 6,295
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Years Ended December 31, 2018 2017 Statutory Income Tax Rate 21 % 34 % (Increase) Decrease in Tax Provision Resulting From: Equity Compensation (2.9 ) 0.7 Income Tax Credits (1.0 ) (0.9 ) Foreign Tax Rates 0.3 (3.8 ) Valuation Allowance (297.3 ) (20.9 ) Tax Rate Change - (30.8 ) Other 2.0 (0.1 ) Effective Income Tax Rate (277.9 )% (21.8 )%

Note 9 - Business Segment Inf_2

Note 9 - Business Segment Information (Tables)	12 Months Ended
Note 9 - Business Segment Information (Tables)	Dec. 31, 2018
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Battery & Energy Products Communications Systems Corporate Total Revenue $ 70,497 $ 16,693 $ - $ 87,190 Segment Contribution 19,574 6,009 (19,028 ) 6,555 Other Income 58 58 Income Tax Benefit 18,386 18,386 Non-Controlling Interest (69 ) (69 ) Net Income Attributable to Ultralife $ 24,930 Total Assets $ 50,511 $ 26,875 $ 42,718 $ 120,104 Capital Expenditures $ 2,948 $ 614 $ 623 $ 4,185 Goodwill $ 8,616 $ 11,493 - $ 20,109 Depreciation and Amortization of Intangible Assets $ 1,611 $ 375 $ 383 $ 2,369 Stock-Based Compensation $ 333 $ 106 $ 451 $ 890 Battery & Energy Products Communications Systems Corporate Total Revenue $ 69,789 $ 15,742 $ - $ 85,531 Segment Contribution 19,659 6,573 (19,756 ) 6,476 Other Expense (181 ) (181 ) Income Tax Benefit 1,369 1,369 Non-Controlling Interest (16 ) (16 ) Net Income Attributable to Ultralife $ 7,648 Total Assets $ 44,720 $ 32,169 $ 20,297 $ 97,186 Capital Expenditures $ 1,015 $ 212 $ 63 $ 1,290 Goodwill $ 8,965 $ 11,493 - $ 20,458 Depreciation and Amortization of Intangible Assets $ 1,830 $ 430 $ 167 $ 2,427 Stock-Based Compensation $ 301 $ 88 $ 264 $ 653
Revenue from External Customers by Geographic Areas [Table Text Block]	2018: Total Revenue United States Non-United States Battery & Energy Products $ 70,497 $ 37,898 $ 32,599 Communications Systems 16,693 15,156 1,537 Total $ 87,190 $ 53,054 $ 34,136 61 % 39 % 2017: Total Revenue United States Non-United States Battery & Energy Products $ 69,789 $ 33,397 $ 36,392 Communications Systems 15,742 14,217 1,525 Total $ 85,531 $ 47,614 $ 37,917 56 % 44 %
Schedule of Revenues from External Customers by Business Segment Sector [Table Text Block]	2018: Total Revenue Commercial Government/ Defense Battery & Energy Products $ 70,497 $ 41,044 $ 29,453 Communications Systems 16,693 - 16,693 Total $ 87,190 $ 41,044 $ 46,146 47 % 53 % 2017: Total Revenue Commercial Government/ Defense Battery & Energy Products $ 69,789 $ 40,790 $ 28,999 Communications Systems 15,742 - 15,742 Total $ 85,531 $ 40,790 $ 44,741 48 % 52 %

Note 1 - Summary of Operation_3

Note 1 - Summary of Operations and Significant Accounting Policies (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)shares	Dec. 31, 2017USD ($)shares
Research and Development Expense, Gross \| $	$ 4,905	$ 5,142
Customer Funded Research and Development Expense Included in Cost of Goods Sold \| $	397	405
Research and Development, Revenue \| $	$ 397	$ 405
Weighted Average Number Diluted Shares Outstanding Adjustment, Total	465,004
Number of Operating Segments	2
Employee Stock Option [Member]
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total	1,127,837	1,035,711
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	448,250	824,500
Restricted Stock [Member]
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total	17,500	330,676
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance		0
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Number of Major Customers	1	1
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Large Defense Primary Contractor, 1 [Member]
Concentration Risk, Percentage	16.00%	18.00%

Note 1 - Summary of Operation_4

Note 1 - Summary of Operations and Significant Accounting Policies - Property, Plant and Equipment Estimated Useful Life (Details)	12 Months Ended
	Dec. 31, 2018
Building [Member] \| Minimum [Member]
Estimated useful lives (Year)	10 years
Building [Member] \| Maximum [Member]
Estimated useful lives (Year)	20 years
Machinery and Equipment [Member] \| Minimum [Member]
Estimated useful lives (Year)	5 years
Machinery and Equipment [Member] \| Maximum [Member]
Estimated useful lives (Year)	10 years
Furniture and Fixtures [Member] \| Minimum [Member]
Estimated useful lives (Year)	3 years
Furniture and Fixtures [Member] \| Maximum [Member]
Estimated useful lives (Year)	10 years
Computer Equipment [Member] \| Minimum [Member]
Estimated useful lives (Year)	3 years
Computer Equipment [Member] \| Maximum [Member]
Estimated useful lives (Year)	5 years
Leasehold Improvements [Member]
Leasehold Improvements	Lesser of useful life or lease term

Note 2 - Share Repurchase Pro_2

Note 2 - Share Repurchase Program (Details Textual) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 06, 2019	Dec. 31, 2018	Nov. 01, 2018
Treasury Stock, Shares, Acquired		105,674
Treasury Stock, Value, Acquired, Cost Method		$ 742
Subsequent Event [Member]
Treasury Stock, Shares, Acquired	267,100
Treasury Stock, Acquired, Aggregate Number of Shares	372,774
Treasury Stock, Acquired, Aggregate Value	$ 2,697
Maximum [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased			2,500,000

Note 3 - Supplemental Balance_3

Note 3 - Supplemental Balance Sheet Information (Details Textual) $ in Thousands		12 Months Ended
		Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance		$ 25,934	$ 18,330	$ 10,706
Revenues, Total	[1]	87,190	85,531
Construction in Progress, Gross		2,870	5,136
Depreciation, Total		$ 1,972	2,005
Number of Reporting Units		4
Goodwill, Impairment Loss		$ 0	$ 0
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		362
Finite-Lived Intangible Assets, Amortization Expense, Year Two		349
Finite-Lived Intangible Assets, Amortization Expense, Year Three		330
Finite-Lived Intangible Assets, Amortization Expense, Year Four		315
Finite-Lived Intangible Assets, Amortization Expense, Year Five		312
Grant [Member]
Revenues, Total		$ 97

[1]	Sales classified to U.S. include shipments to U.S.-based prime contractors which in some cases may serve non-U.S. projects

Note 3 - Supplemental Balance_4

Note 3 - Supplemental Balance Sheet Information - Cash and Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash	$ 25,583	$ 18,241
Restricted Cash	351	89
Total	$ 25,934	$ 18,330	$ 10,706

Note 3 - Supplemental Balance_5

Note 3 - Supplemental Balance Sheet Information - Components of Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Raw Materials	$ 13,274	$ 14,606
Work in Process	2,016	2,013
Finished Products	7,553	9,707
Total	$ 22,843	$ 26,326

Note 3 - Supplemental Balance_6

Note 3 - Supplemental Balance Sheet Information - Components of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, plant and equipment, gross	$ 71,601	$ 66,711
Less – Accumulated Depreciation	(60,857)	(59,141)
Total	10,744	7,570
Land [Member]
Property, plant and equipment, gross	123	123
Building and Building Improvements [Member]
Property, plant and equipment, gross	8,267	7,858
Machinery and Equipment [Member]
Property, plant and equipment, gross	51,261	50,852
Furniture and Fixtures [Member]
Property, plant and equipment, gross	2,058	2,005
Computer Equipment [Member]
Property, plant and equipment, gross	5,590	5,338
Construction in Progress [Member]
Property, plant and equipment, gross	$ 4,302	$ 535

Note 3 - Supplemental Balance_7

Note 3 - Supplemental Balance Sheet Information - Summary of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill balance	$ 20,458	$ 19,965
Effect of Foreign Currency Translation	(349)	493
Goodwill balance	20,109	20,458
Battery & Energy Products Segment [Member]
Goodwill balance	8,965	8,472
Effect of Foreign Currency Translation	(349)	493
Goodwill balance	8,616	8,965
Communications Systems Segment [Member]
Goodwill balance	11,493	11,493
Effect of Foreign Currency Translation
Goodwill balance	$ 11,493	$ 11,493

Note 3 - Supplemental Balance_8

Note 3 - Supplemental Balance Sheet - Composition of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Cost	$ 16,109	$ 16,344
Accumulated Amortization	9,605	9,259
Net	6,504	7,085
Trademarks [Member]
Cost	3,405	3,411
Accumulated Amortization	0
Net	3,405	3,411
Customer Relationships [Member]
Cost	6,471	6,618
Accumulated Amortization	4,392	4,208
Net	2,079	2,410
Patented Technology [Member]
Cost	5,486	5,545
Accumulated Amortization	4,725	4,595
Net	761	950
Distributor Relationships [Member]
Cost	377	377
Accumulated Amortization	377	377
Net
Trade Names [Member]
Cost	370	393
Accumulated Amortization	111	79
Net	$ 259	$ 314

Note 3 - Supplemental Balance_9

Note 3 - Supplemental Balance Sheet Information - Amortization of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Amortization of Intangible Assets	$ 397	$ 422
Research and Development Expense [Member]
Amortization of Intangible Assets	147	165
Selling, General and Administrative Expenses [Member]
Amortization of Intangible Assets	$ 250	$ 257

Note 4 - Debt (Details Textual)

Note 4 - Debt (Details Textual) $ in Thousands	May 31, 2017USD ($)	Dec. 31, 2018USD ($)
KeyBank [Member] \| Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 30,000
Line of Credit Facility Maximum Borrowing Capacity May Be Increased to	50,000
Long-term Line of Credit, Total		$ 0
Minimum Fixed Charge Coverage Ratio		1.15
Minimum Tangible Net Worth		$ 40,000
Letters of Credit Outstanding, Amount		0
KeyBank [Member] \| Letter of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,500
PNC Bank [Member] \| Revolving Credit Facility [Member]
Long-term Line of Credit, Total		$ 0

Note 4 - Debt - Interest Rate M

Note 4 - Debt - Interest Rate Margins (Details) - KeyBank [Member] - Revolving Credit Facility [Member]	12 Months Ended
	Dec. 31, 2018
Leverage Ratio Less Than 1.5 [Member]
Applicable basis points for unused fee	0.20%
Leverage Ratio Between 1.5 and 2.5 [Member]
Applicable basis points for unused fee	0.15%
Leverage Ratio Greater than 2.5 [Member]
Applicable basis points for unused fee	0.10%
London Interbank Offered Rate (LIBOR) [Member] \| Leverage Ratio Less Than 1.5 [Member]
Interest rate margin on outstanding borrowings	1.85%
London Interbank Offered Rate (LIBOR) [Member] \| Leverage Ratio Between 1.5 and 2.5 [Member]
Interest rate margin on outstanding borrowings	2.00%
London Interbank Offered Rate (LIBOR) [Member] \| Leverage Ratio Greater than 2.5 [Member]
Interest rate margin on outstanding borrowings	2.15%
Base Rate [Member] \| Leverage Ratio Less Than 1.5 [Member]
Interest rate margin on outstanding borrowings	(0.50%)
Base Rate [Member] \| Leverage Ratio Between 1.5 and 2.5 [Member]
Interest rate margin on outstanding borrowings	(0.25%)
Base Rate [Member] \| Leverage Ratio Greater than 2.5 [Member]
Interest rate margin on outstanding borrowings	0.00%

Note 5 - Commitments and Cont_3

Note 5 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Operating Leases, Rent Expense, Net, Total	$ 716	$ 660
Capital Addition Purchase Commitments [Member]
Long-term Purchase Commitment, Amount	$ 2,848

Note 5 - Commitments and Cont_4

Note 5 - Commitments and Contingencies - Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2018USD ($)
2,019	$ 685
2,020	404
2,021	142
2,022
2,023

Note 5 - Commitments and Cont_5

Note 5 - Commitments and Contingencies - Changes in Produce Warranty Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Accrued Warranty Obligation, Beginning	$ 149	$ 172
Provision for warranties issued	7	84
Settlements made	(61)	(107)
Accrued Warranty Obligations – Ending	$ 95	$ 149

Note 6 - Shareholders' Equity_2

Note 6 - Shareholders' Equity (Details Textual) - USD ($)

Jul. 25, 2018

Jan. 03, 2011

Dec. 30, 2010

Jan. 31, 2018

Sep. 30, 2017

Jun. 30, 2014

Sep. 30, 2018

Jul. 02, 2017

Dec. 31, 2018

Dec. 31, 2017

Dec. 31, 2014

Dec. 31, 2016

Jun. 30, 2004

Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance

1,576,087

1,860,211

2,323,581

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross

217,500

244,750

Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price

$ 9.68

$ 5.60

Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options

$ 521,000

Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition

328 days

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value

$ 4.22

$ 2.47

Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value

$ 1,722,000

$ 588,000

Proceeds from Stock Options Exercised

1,568,000

1,429,000

Allocated Share-based Compensation Expense, Total

890,000

653,000

Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options

$ 0

Common Stock, Capital Shares Reserved for Future Issuance

726,858

Employee Stock Option [Member]

Allocated Share-based Compensation Expense, Total

$ 817,000

642,000

Employee Stock Option [Member] | President [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost

$ 193,000

Restricted Stock [Member]

Allocated Share-based Compensation Expense, Total

$ 73,000

11,000

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period

12,900

Stock Repurchased During Period, Shares

3,959

The 2004 Long-term Incentive Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized

2,900,000

750,000

Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance

727,649

The 2004 Long-term Incentive Plan [Member] | President [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

4 years

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period

5 years

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross

50,000

Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price

$ 6.58

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Incremental Vesting Shares

12,500

Option Accelerated Vesting, Stock Price Trigger

$ 10

Option Accelerated Vesting, Threshold Trading Days

15 days

Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost

$ 182,000

The 2004 Long-term Incentive Plan [Member] | Options I [Member] | President [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

4 years

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross

50,000

Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price

$ 6.42

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Incremental Vesting Shares

12,500

The 2004 Long-term Incentive Plan [Member] | Options II [Member] | President [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

4 years

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross

250,000

Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price

$ 6.42

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Incremental Vesting Shares

62,500

The 2004 Long-term Incentive Plan [Member] | Options III [Member] | President [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

4 years

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross

200,000

Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price

$ 10

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Incremental Vesting Shares

50,000

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Minimum Closing Share Price

$ 10

The 2004 Long-term Incentive Plan [Member] | Options IV [Member] | President [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

4 years

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross

200,000

Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price

$ 15

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Incremental Vesting Shares

50,000

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Minimum Closing Share Price

$ 15

The 2004 Long-term Incentive Plan [Member] | Restricted Stock [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

3 years

Stock Issued During Period, Shares, Restricted Stock Award, Gross

49,200

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value

$ 3.24

Allocated Share-based Compensation Expense, Total

$ 11,000

The 2014 Long-term Incentive Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized

1,750,000

Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance

848,438

The 2014 Long-term Incentive Plan [Member] | Awards Other than Stock Options and SARs [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized

800,000

The 2014 Long-term Incentive Plan [Member] | Restricted Stock [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

3 years

Stock Issued During Period, Shares, Restricted Stock Award, Gross

17,500

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value

$ 7.16

Allocated Share-based Compensation Expense, Total

$ 73,000

Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options

$ 52,000

Incentive Stock Options [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

3 years

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period

7 years

Note 6 - Shareholders' Equity -

Note 6 - Shareholders' Equity - Non-cash Stock Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Stock-based comepensation expense	$ 890	$ 653
Employee Stock Option [Member]
Stock-based comepensation expense	817	642
Restricted Stock [Member]
Stock-based comepensation expense	$ 73	$ 11

Note 6 - Shareholders' Equity_3

Note 6 - Shareholders' Equity - Stock Option Assumptions (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Risk-free interest rate	2.60%	1.70%
Volatility factor	46.80%	50.00%
Weighted Average Expected Life (Year)	5 years	5 years
Forfeiture rate	10.00%	10.00%
Dividends	0.00%	0.00%

Note 6 - Shareholders' Equity_4

Note 6 - Shareholders' Equity - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Shares under Option, beginning of period (in shares)	1,860,211	2,323,581
Options outstanding - weighted average exercise price (in dollars per share)	$ 5.96	$ 6.22
Options Granted (in shares)	217,500	244,750
Options granted - weighted average exercise price (in dollars per share)	$ 9.68	$ 5.60
Options Exercised (in shares)	(422,793)	(333,305)
Options exercised - weighted average exercise price (in dollars per share)	$ 4.49	$ 4.29
Options Forfeited or Expired (in shares)	(78,831)	(374,815)
Options forfeited or expired - weighted average exercise price (in dollars per share)	$ 11.75	$ 8.11
Shares under option, end of period (in shares)	1,576,087	1,860,211
Options outstanding - weighted average exercise price (in dollars per share)	$ 6.58	$ 5.96
Options outstanding - weighted average remaining contractual term (Year)	3 years 182 days
Options outstanding - aggregate intrinsic value	$ 1,946
Vested and Expected to Vest (in shares)	1,475,570
Options vested and expected to vest - weighted average exercise price (in dollars per share)	$ 6.56
Options vested and expected to vest - weighted average remaining contractual term (Year)	3 years 135 days
Options vested and expected to vest - aggregate intrinsic value	$ 1,851
Options Exercisable (in shares)	1,064,127	1,649,594
Options exercisable, weighted-average exercise price (in dollars per share)	$ 5.89	$ 4.63
Options exercisable - weighted average remaining contractual term (Year)	2 years 251 days
Options exercisable - aggregate intrinsic value	$ 1,565

Note 6 - Shareholders' Equity_5

Note 6 - Shareholders' Equity - Options Range of Exercise Prices (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Lower range limit (in dollars per share)	$ 3.22
Upper range limit (in dollars per share)	$ 15
Options outstanding, number of outstanding options (in shares)	1,576,087
Options outstanding, weighted-average remaining contractual life (Year)	3 years 182 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 6.58
Options exercisable, number of options exercisable (in shares)	1,064,127
Options exercisable, weighted-average exercise price (in dollars per share)	$ 5.89	$ 4.63
Range One [Member]
Lower range limit (in dollars per share)	3.22
Upper range limit (in dollars per share)	$ 3.99
Options outstanding, number of outstanding options (in shares)	346,148
Options outstanding, weighted-average remaining contractual life (Year)	2 years 204 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 3.79
Options exercisable, number of options exercisable (in shares)	346,148
Options exercisable, weighted-average exercise price (in dollars per share)	$ 3.79
Range Two [Member]
Lower range limit (in dollars per share)	4
Upper range limit (in dollars per share)	$ 5.99
Options outstanding, number of outstanding options (in shares)	451,023
Options outstanding, weighted-average remaining contractual life (Year)	4 years 262 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 4.94
Options exercisable, number of options exercisable (in shares)	217,979
Options exercisable, weighted-average exercise price (in dollars per share)	$ 4.72
Range Three [Member]
Lower range limit (in dollars per share)	5
Upper range limit (in dollars per share)	$ 9.99
Options outstanding, number of outstanding options (in shares)	528,916
Options outstanding, weighted-average remaining contractual life (Year)	3 years 288 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 7.72
Options exercisable, number of options exercisable (in shares)	300,000
Options exercisable, weighted-average exercise price (in dollars per share)	$ 6.42
Range Four [Member]
Lower range limit (in dollars per share)	10
Upper range limit (in dollars per share)	$ 15
Options outstanding, number of outstanding options (in shares)	250,000
Options outstanding, weighted-average remaining contractual life (Year)	2 years
Options outstanding, weighted-average exercise price (in dollars per share)	$ 11
Options exercisable, number of options exercisable (in shares)	200,000
Options exercisable, weighted-average exercise price (in dollars per share)	$ 10

Note 7 - Income Taxes (Details

Note 7 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2017
Income Tax Expense (Benefit), Total	$ (18,386)	$ (1,369)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	18,652
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	1,939
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	(19,662)	(10,695)
Deferred Tax Assets, Gross, Total	20,676	21,613
Unrecognized Tax Benefits, Ending Balance	0	0
Deferred Tax Assets, Valuation Allowance, Total	1,942	21,604
Accounting Standards Update 2016-09 [Member]
Deferred Tax Assets, Gross, Total			$ 1,123
Deferred Tax Assets, Valuation Allowance, Total			$ 1,123
General Business Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	1,817
Domestic Tax Authority [Member] \| Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards, Total	$ 63,388
Open Tax Year	2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Foreign Tax Authority [Member]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018
Foreign Tax Authority [Member] \| Her Majesty's Revenue and Customs (HMRC) [Member]
Operating Loss Carryforwards, Total	$ 10,220	$ 10,220
State and Local Jurisdiction [Member]
Open Tax Year	2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

Note 7 - Income Taxes - Income

Note 7 - Income Taxes - Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Federal
State
Foreign	257	300
Total current tax provision	257	300
Federal	(18,514)	(1,717)
State		55
Foreign	(129)	(7)
Total deferred tax provision (benefit)	(18,643)	(1,669)
Total income tax provision	$ (18,386)	$ (1,369)

Note 7 - Income Taxes - Deferre

Note 7 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment	$ 168	$ 44
Net Operating Loss Carryforwards	15,622	16,838
Tax Credit Carryforwards	1,817	1,837
Intangible Assets	1,231	1,535
Accrued Expenses, Reserves and Other	1,838	1,359
Total Deferred Tax Assets	20,676	21,613
Valuation Allowance for Deferred Tax Assets	(1,942)	(21,604)
Net Deferred Tax Assets	18,734	9
Other	(25)	(38)
Intangible Assets	(3,856)	(3,806)
Total Deferred Tax Liabilities	(3,881)	(3,844)
Net Deferred Tax Assets (Liabilities)	$ 14,853
Net Deferred Tax Assets (Liabilities)		$ (3,835)

Note 7 - Income Taxes - Net Def

Note 7 - Income Taxes - Net Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred Income Taxes, Net	$ 15,444	$ 32
Deferred Tax Liabilities	(591)	(3,867)
Net Deferred Tax Assets (Liabilities)	$ 14,853
Net Deferred Tax Assets (Liabilities)		$ (3,835)

Note 7 - Income Taxes - United

Note 7 - Income Taxes - United States and Foreign Income (Loss) From Continuing Operations Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
United States	$ 6,226	$ 4,831
Foreign	387	1,464
Income Before Income Taxes	$ 6,613	$ 6,295

Note 7 - Income Taxes - Effecti

Note 7 - Income Taxes - Effective Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Statutory Income Tax Rate	21.00%	34.00%
Equity Compensation	(2.90%)	0.70%
Income Tax Credits	(1.00%)	(0.90%)
Foreign Tax Rates	0.30%	(3.80%)
Valuation Allowance	(297.30%)	(20.90%)
Tax Rate Change		(30.80%)
Other	2.00%	(0.10%)
Effective Income Tax Rate	(277.90%)	(21.80%)

Note 8 - 401(k) Retirement Be_2

Note 8 - 401(k) Retirement Benefit Plan (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	50.00%	50.00%
Defined Contribution Plan, Maximum Employee Contribution Percentage, Subject to Employer Matching Contribution	4.00%	4.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	2.00%	2.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 204	$ 181

Note 9 - Business Segment Inf_3

Note 9 - Business Segment Information (Details Textual)	12 Months Ended
Note 9 - Business Segment Information (Details Textual)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Number of Operating Segments	2
Non-US [Member]
Long-Lived Assets	$ 11,502	$ 12,443

Note 9 - Business Segment Inf_4

Note 9 - Business Segment Information - Segment Activity (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue	[1]	$ 87,190	$ 85,531
Segment Contribution		6,555	6,476
Other Income (Expenses)		58	(181)
Income Tax Benefit (Expenses)		18,386	1,369
Non-Controlling Interest		(69)	(16)
Net Income Attributable to Ultralife		24,930	7,648
Total Assets		120,104	97,186
Capital Expenditures		4,185	1,290
Goodwill		20,109	20,458	$ 19,965
Depreciation and Amortization of Intangible Assets		2,369	2,427
Stock-Based Compensation		890	653
Battery & Energy Products Segment [Member]
Revenue	[1]	70,497	69,789
Segment Contribution		19,574	19,659
Total Assets		50,511	44,720
Capital Expenditures		2,948	1,015
Goodwill		8,616	8,965	8,472
Depreciation and Amortization of Intangible Assets		1,611	1,830
Stock-Based Compensation		333	301
Communications Systems Segment [Member]
Revenue	[1]	16,693	15,742
Segment Contribution		6,009	6,573
Total Assets		26,875	32,169
Capital Expenditures		614	212
Goodwill		11,493	11,493	$ 11,493
Depreciation and Amortization of Intangible Assets		375	430
Stock-Based Compensation		106	88
Corporate Segment [Member]
Revenue
Segment Contribution		(19,028)	(19,756)
Other Income (Expenses)		58	(181)
Income Tax Benefit (Expenses)		18,386	1,369
Non-Controlling Interest		(69)	(16)
Total Assets		42,718	20,297
Capital Expenditures		623	63
Depreciation and Amortization of Intangible Assets		383	167
Stock-Based Compensation		$ 451	$ 264

[1]	Sales classified to U.S. include shipments to U.S.-based prime contractors which in some cases may serve non-U.S. projects

Note 9 - Business Segment Inf_5

Note 9 - Business Segment Information - Domestic and International Revenue by Segment (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Revenues, Total	[1]	$ 87,190	$ 85,531
Revenue, percentage	[1]
UNITED STATES
Revenues, Total	[1]	$ 53,054	$ 47,614
Revenue, percentage	[1]	61.00%	56.00%
Non-US [Member]
Revenues, Total	[1]	$ 34,136	$ 37,917
Revenue, percentage	[1]	39.00%	44.00%
Battery & Energy Products Segment [Member]
Revenues, Total	[1]	$ 70,497	$ 69,789
Battery & Energy Products Segment [Member] \| UNITED STATES
Revenues, Total	[1]	37,898	33,397
Battery & Energy Products Segment [Member] \| Non-US [Member]
Revenues, Total	[1]	32,599	36,392
Communications Systems Segment [Member]
Revenues, Total	[1]	16,693	15,742
Communications Systems Segment [Member] \| UNITED STATES
Revenues, Total	[1]	15,156	14,217
Communications Systems Segment [Member] \| Non-US [Member]
Revenues, Total	[1]	$ 1,537	$ 1,525

[1]	Sales classified to U.S. include shipments to U.S.-based prime contractors which in some cases may serve non-U.S. projects

Note 9 - Business Segment Inf_6

Note 9 - Business Segment Information - Revenue by Business Segment Sector (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Revenues, Total	[1]	$ 87,190	$ 85,531
Revenue, percentage	[1]
Commercial [Member]
Revenues, Total		$ 41,044	$ 40,790
Revenue, percentage		47.00%	48.00%
Government & Defense [Member]
Revenues, Total		$ 46,146	$ 44,741
Revenue, percentage		53.00%	52.00%
Battery & Energy Products Segment [Member]
Revenues, Total	[1]	$ 70,497	$ 69,789
Battery & Energy Products Segment [Member] \| Commercial [Member]
Revenues, Total		41,044	40,790
Battery & Energy Products Segment [Member] \| Government & Defense [Member]
Revenues, Total		29,453	28,999
Communications Systems Segment [Member]
Revenues, Total	[1]	16,693	15,742
Communications Systems Segment [Member] \| Commercial [Member]
Revenues, Total
Communications Systems Segment [Member] \| Government & Defense [Member]
Revenues, Total		$ 16,693	$ 15,742

[1]	Sales classified to U.S. include shipments to U.S.-based prime contractors which in some cases may serve non-U.S. projects