Ultralife (ULBI) 10-K 6 Feb 20 2019 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 03, 2020	Jun. 30, 2019
Document Information [Line Items]
Entity Registrant Name	Ultralife Corp
Entity Central Index Key	0000875657
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)		15,870,688
Entity Public Float			$ 78,106,659
Entity Shell Company	false
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Title of 12(b) Security	Common Stock, $0.10 par value per share
Entity Interactive Data Current	Yes

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current Assets:
Cash	$ 7,405	$ 25,934
Trade accounts receivable, net of allowance for doubtful accounts of $324 and $296, respectively	30,106	16,015
Inventories, net	29,759	22,843
Prepaid expenses and other current assets	3,103	2,368
Total current assets	70,373	67,160
Property, plant and equipment, net	22,525	10,744
Goodwill	26,753	20,109
Other intangible assets, net	9,721	6,504
Deferred tax assets	13,222	15,444
Other noncurrent assets	1,963	887
Total assets	144,557	120,848
Current Liabilities:
Accounts payable	9,388	9,919
Current portion of long-term debt	1,372
Accrued compensation and related benefits	1,655	1,494
Accrued expenses and other current liabilities	4,775	3,973
Total current liabilities	17,190	15,386
Long-term debt	15,780
Deferred income taxes	559	591
Other noncurrent liabilities	1,278	408
Total liabilities	34,807	16,385
Commitments and contingencies (Note 6)
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 – 20,268,050 shares and 20,053,335 shares, respectively; outstanding – 15,866,868 shares and 15,920,585 shares, respectively	2,026	2,005
Capital in excess of par value	184,292	182,630
Accumulated deficit	(52,830)	(58,035)
Accumulated other comprehensive loss	(2,531)	(2,786)
Treasury stock - at cost; 4,401,182 shares and 4,132,750 shares, respectively	(21,231)	(19,266)
Total Ultralife Corporation equity	109,726	104,548
Non-controlling interest	24	(85)
Total shareholders’ equity	109,750	104,463
Total liabilities and shareholders' equity	$ 144,557	$ 120,848

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Trade accounts receivable, allowance for doubtful accounts	$ 324	$ 296
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)	20,268,050	20,053,335
Common stock, shares outstanding (in shares)	15,866,868	15,920,585
Treasury stock, shares (in shares)	4,401,182	4,132,750

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Revenue	[1]	$ 106,795	$ 87,190
Cost of products sold		75,630	61,607
Gross profit		31,165	25,583
Operating expenses:
Research and development		6,805	4,508
Selling, general and administrative		16,992	14,520
Total operating expenses		23,797	19,028
Operating income		7,368	6,555
Other expense (income):
Interest and financing expense		539	63
Miscellaneous		58	(121)
Income Before Income Taxes		6,771	6,613
Income tax provision (benefit)		1,457	(18,386)
Net income		5,314	24,999
Net income attributable to non-controlling interest		109	69
Net income attributable to Ultralife Corporation		5,205	24,930
Other comprehensive income (loss):
Foreign currency translation adjustments		255	(1,175)
Comprehensive income attributable to Ultralife Corporation		$ 5,460	$ 23,755
Net income per share attributable to Ultralife Corporation common shareholders – Basic: (in dollars per share)		$ 0.33	$ 1.57
Net income per share attributable to Ultralife Corporation common shareholders – Diluted: (in dollars per share)		$ 0.32	$ 1.53
Weighted average shares outstanding – Basic (in shares)		15,783	15,882
Weighted average shares outstanding – Diluted (in shares)		16,179	16,347
[1]	Sales classified to U.S. include shipments to U.S.-based prime contractors which in some cases may serve non-U.S. projects

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, 2017	19,670,928
Balance at Dec. 31, 2017	$ 1,966	$ 180,211	$ (1,611)	$ (82,894)	$ (18,469)	$ (154)	$ 79,049
Cumulative effect adjustment at Dec. 31, 2017				(71)			(71)
Share repurchases					(742)		$ (742)
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
Balance (in shares) at Dec. 31, 2018	20,053,335						15,920,585
Balance at Dec. 31, 2018	$ 2,005	182,630	(2,786)	(58,035)	(19,266)	(85)	$ 104,463
Share repurchases					(1,957)		$ (1,957)
Stock option exercises (in shares)	208,881						208,881
Stock option exercises	$ 21	909					$ 930
Tax withholdings on option exercises					(8)		(8)
Stock-based compensation -stock options		623					623
Stock-based compensation -restricted stock		130					130
Foreign currency translation adjustments			255				255
Net income				5,205		109	$ 5,314
Stock-based compensation -restricted stock (in shares)	5,834
Balance (in shares) at Dec. 31, 2019	20,268,050						15,866,868
Balance at Dec. 31, 2019	$ 2,026	$ 184,292	$ (2,531)	$ (52,830)	$ (21,231)	$ 24	$ 109,750

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
OPERATING ACTIVITIES:
Net income	$ 5,314	$ 24,999
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation	2,220	1,972
Amortization of intangible assets	525	397
Amortization of financing fees	44	36
Stock-based compensation	753	890
Deferred income tax expense	1,211	(18,643)
Changes in operating assets and liabilities:
Accounts receivable	(10,416)	(1,511)
Inventories, gross	(3,319)	2,348
Inventory reserves	1,123	838
Prepaid expenses and other assets	(1,575)	373
Income taxes receivable and payable	25	9
Accounts payable and other liabilities	1,125	(822)
Net cash (used in) provided by operating activities	(2,970)	10,886
INVESTING ACTIVITIES:
Purchase of SWE, net of cash acquired	(25,248)
Purchases of property, plant and equipment	(6,281)	(4,185)
Net cash used in investing activities	(31,529)	(4,185)
FINANCING ACTIVITIES:
Proceeds from revolving credit facility	10,182
Proceeds from term loan facility	8,000
Payment of term loan facility	(866)
Repurchase of common stock	(1,957)	(742)
Payment of debt issuance costs	(157)
Proceeds from exercise of stock options	930	1,568
Tax withholdings on stock-based awards	(8)	(55)
Proceeds from government grant		397
Net cash provided by financing activities	16,124	1,168
Effect of exchange rate changes on cash	(154)	(265)
INCREASE (DECREASE) IN CASH	(18,529)	7,604
Cash - Beginning of year	25,934	18,330
Cash - End of year	7,405	25,934
Supplemental cash flow information:
Construction in process in accounts payable	74	1,616
Income taxes paid	266	220
Interest paid	$ 576	$ 132

Note 1 - Summary of Options and

Note 1 - Summary of Options and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
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.; Southwest Electronic Energy Corporation and its wholly-owned subsidiary, CLB, INC.; 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), Southwest Electronic Energy Corporation and its wholly-owned subsidiary, CLB, INC. (“SWE” collectively) (Note 2 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, 2019 2018. 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 – 40 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 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 years ended December 31, 2019 2018 not As of December 31, 2019 2018, no one 606, Deferred revenue, unbilled revenue and deferred contract costs recorded on our consolidated balance sheets as of December 31, 2019 2018 not l. Warranty Reserves We generally offer standard warranties against product defects. We do not 6. 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, 2019 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, 2019 2018, $8,025 $5,230, $1,220 $722, 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 two 14% 12% 2019, 7% 16% 2018, 2019 two 64% 15% 2018 two 34% 20% no 10% Currently, we do not We generally do not 2019 2018, 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, 2019 2018. 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, 2019, 899,041 31,666 396,536 642,751 December 31, 2019 For the year ended December 31, 2018, 1,127,837 17,500 465,004 448,250 December 31, 2018 u. Stock-Based Compensation We have various stock-based employee compensation plans that are described more fully in Note 7. v. Segment Reporting We have two w. Recent Accounting Pronouncements Recently Adopted Accounting Guidance Leases Effective January 1, 2019, 2016 02 Leases 842 not December 31, 2018 The Company adopted the new standard applying the modified retrospective approach. The Company measured and recognized leases upon adoption which had commenced as of the beginning or during the prior year. The package of practical expedients permitted under the transition guidance of the new standard was elected which allowed us to carry forward the historical lease classification and determination of whether an arrangement is or contains a lease on existing leases. The use-of-hindsight transition practical expedient was applied to determine the lease term for existing leases, which resulted in the lengthening of the lease term at commencement for one At contract inception, the Company determines whether the arrangement is or contains a lease and determines the lease classification. The lease term is determined based on the non-cancellable term of the lease adjusted to the extent optional renewal terms and termination rights are reasonably certain. Lease expense is recognized evenly over the lease term. Variable lease payments are recognized as period costs. The present value of remaining lease payments is recognized as a liability on the balance sheet with a corresponding right-of-use asset adjusted for prepaid or accrued lease payments. The Company uses its incremental borrowing rate for the discount rate, unless the interest rate implicit in the lease contract is readily determinable. The Company has adopted the practical expedients to not not The impact on the consolidated balance sheet as of December 31, 2018 Impact to Previously Reported Results Consolidated Balance Sheet as of December 31, 2018: As Previously Reported Lease Standard Adjustment As Adjusted Other noncurrent assets $ 82 $ 805 $ 887 Prepaid expenses and other current assets 2,429 (61 ) 2,368 Accrued expenses and other current liabilities 3,534 439 3,973 Other noncurrent liabilities 32 376 408 Accumulated deficit (57,964 ) (71 ) (58,035 ) See Note 9 Recent Accounting Guidance Not In June 2016, 2016 13, 326 December 15, 2022. In January 2017, 2017 04, 350 two December 15, 2019

Note 2 - Acquisition

Note 2 - Acquisition	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Subsequent Events [Text Block]	Note 2 – Acquisition On May 1, 2019, 100% $26,190 $942 SWE is a leading independent designer and manufacturer of high-performance smart battery systems and battery packs to customer specifications using lithium cells. SWE serves a variety of industrial markets, including oil & gas, remote monitoring, process control and marine, which demand uncompromised safety, service, reliability and quality. The Company acquired SWE as a bolt-on acquisition to further support our strategy of commercial revenue diversification by providing entry to the oil and gas exploration and production, and subsea electrification markets, which are currently unserved by Ultralife. Another key benefit includes obtaining a highly valuable technical team of battery pack and charger system engineers and technicians to add to our new product development-based revenue growth initiatives in our commercial end-markets particularly asset tracking, smart metering and other industrial applications. The acquisition of SWE was completed pursuant to a Stock Purchase Agreement dated May 1, 2019 ( The aggregate purchase price for the acquisition was funded by the Company through a combination of cash on hand and borrowings under the Credit Facilities (Note 3 The purchase price allocation was determined in accordance with the accounting treatment of a business combination pursuant to FASB ASC Topic 805, 805 The allocation of purchase price to the assets acquired and liabilities assumed at the date of the acquisition is presented in the table below. Management is responsible for determining the fair value of the tangible and intangible assets acquired and liabilities assumed as of the date of acquisition. Management considered several factors, including reference to an analysis performed under ASC 805 not may Cash $ 942 Accounts receivable 3,621 Inventories 4,685 Other current assets 431 Property, plant and equipment 9,177 Goodwill 6,534 Customer relationships 2,522 Trade name 1,127 Accounts payable (1,060 ) Other current liabilities (778 ) Deferred tax liability, net (1,011 ) Net assets acquired $ 26,190 The goodwill included in the Company’s purchase price allocation presented above represents the value of SWE’s assembled and trained workforce, the incremental value that SWE engineering and technology will bring to the Company and the revenue growth which is expected to occur over time which is attributable to increased market penetration from future new products and customers. The goodwill acquired in connection with the acquisition is not The operating results and cash flows of SWE are reflected in the Company’s consolidated financial statements from the date of acquisition. SWE is included in the Battery & Energy Products segment. 50 For the year ended December 31, 2019, $18,746 $1,238, $264 $165 $453 $161 During the year ended December 31, 2019, $322 $157, 4.6 $165, one The following supplemental pro forma information presents the combined results of operations, inclusive of the purchase accounting adjustments and one January 1, 2018, The supplemental pro forma results do not not not Set forth below are the unaudited supplemental pro forma results of the Company and SWE for the years ended December 31, 2019 2018 January 1, 2018. Years Ended December 31 2019 2018 Revenue $ 115,590 $ 115,566 Operating income 8,008 6,278 Net Income attributable to Ultralife Corporation 5,526 24,280 Net income per share attributable to Ultralife Corporation: Basic $ 0.35 $ 1.53 Diluted $ 0.34 $ 1.49 51

Note 3 - Debt

Note 3 - Debt	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 3 – Debt Credit Facilities On May 1, 2019, May 31, 2017 ( The Amended Credit Agreement, among other things, provides for a five $8,000 $30,000 May 31, 2022. six May 31, 2022, may $50,000 Upon closing of the SWE acquisition on May 1, 2019, $6,782 December 31, 2019, $7,134 $1,372 $10,182 December 31, 2019, $164 The Company is required to repay the borrowings under the Term Loan Facility in sixty 60 May 31, 2019, April 30, 2024. May 31, 2022. may As of December 31, 2019, $1,420 2021, $11,650 2022, $1,519 2023, $1,355 2024. In addition to the customary affirmative and negative covenants, the Company must maintain a consolidated fixed charge coverage ratio of equal to or greater than 1.15 1.0, 2.5 1.0, December 31, 2019. Borrowings under the Credit Facilities are secured by substantially all the assets of the Company. Availability under the Revolving Credit Facility is subject to certain borrowing base limits based on receivables and inventories. Interest will accrue on outstanding indebtedness under the Credit Facilities at the Base Rate or the Overnight LIBOR Rate, as selected by the Company, plus the applicable margin. The Base Rate is the higher of (a) the Prime Rate, (b) the Federal Funds Effective Rate plus 50 one hundred zero 50 185 215 December 31, 2019, 3.56% 3.41% The Company must pay a fee of 0.1% 0.2% Payments must be made by the Company to the extent borrowings exceed the maximum amount then permitted to be drawn on the Credit Facilities and from the proceeds of certain transactions. Upon the occurrence of an event of default, the outstanding obligations may

Note 4 - Share Repurchase Progr

Note 4 - Share Repurchase Program	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	Note 4 – Share Repurchase Program 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, During 2019, 267,300 $1,957. From the inception of the Share Repurchase Program on November 1, 2018, 372,974 $2,699.

Note 5 - Supplemental Balance S

Note 5 - Supplemental Balance Sheet Information	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Supplemental Balance Sheet Disclosures [Text Block]	Note 5 - Supplemental Balance Sheet Information a. Cash and Restricted Cash The Company had cash and restricted cash totaling $7,405 $25,934 December 31, 2019 2018, December 31 201 9 201 8 Cash $ 7,135 $ 25,583 Restricted cash 270 351 Total $ 7,405 $ 25,934 As of December 31, 2019 December 31, 2018, $188 $266, December 31, 2019, $78 December 31, 2019 December 31, 2018, $82 $85, 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 2019 2018 Raw materials $ 18,485 $ 13,274 Work in process 2,548 2,016 Finished products 8,726 7,553 Total $ 29,759 $ 22,843 c. Property, Plant and Equipment Major classes of property, plant and equipment consisted of the following: December 31 2019 2018 Land $ 1,273 $ 123 Buildings and leasehold improvements 8,148 8,267 Machinery and equipment 62,562 51,261 Furniture and fixtures 2,112 2,058 Computer hardware and software 6,528 5,590 Construction in progress 4,730 4,302 85,353 71,601 Less – Accumulated depreciation (62,828 ) (60,857 ) Total $ 22,525 $ 10,744 Depreciation expense was $2,220 $1,972 December 31, 2019 2018, 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 2019 2018. The Company performed a quantitative impairment test as of September 30, 2019 five 2 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 2019 2018, no 10%, September 30, 2019 five 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, 2019 2018: Battery & Energy Products Communications Systems Total Balance – January 1, 2018 $ 8,965 $ 11,493 $ 20,458 Effect of foreign currency translation (349 ) - (349 ) Balance – December 31, 2018 8,616 11,493 20,109 Acquisition of SWE 6,534 - 6,534 Effect of foreign currency translation 110 - 110 Balance – December 31, 2019 $ 15,260 $ 11,493 $ 26,753 The composition of intangible assets was: December 31, 201 9 Cost Accumulated amortization Net Trademarks $ 3,403 $ - $ 3,403 Customer relationships 9,080 4,721 4,359 Patents and technology 5,521 4,869 652 Distributor relationships 377 377 - Trade name 1,511 204 1,307 Total other intangible assets $ 19,892 $ 10,171 $ 9,721 December 31, 201 8 Cost Accumulated a mortization 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 The change in the cost value of other intangible assets is a result of the SWE acquisition (Note 2 Amortization of other intangible assets was included in the following financial statement captions: Year ended December 31 201 9 2018 Research and development expense $ 130 $ 147 Selling, general and administrative expense 395 250 Total $ 525 $ 397 Future amortization expense of amortizable intangible assets will be approximately $360, $341, $326, $323 $313 five December 31, 2020 2024,

Note 6 - Commitments and Contin

Note 6 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 6 - Commitments and Contingencies 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, 2019, $1,185 c. China Our operating facility in China presents risks including, but not 9 d. 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 e. 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, 2019 2018 201 9 201 8 Balance, January 1 $ 95 $ 149 Assumed warranty obligations – SWE 145 - Provision for warranties issued 114 7 Settlements made (159 ) (61 ) Balance, December 31 $ 195 $ 95 f . Contingencies and L egal Matters We are subject to legal proceedings and claims that arise from time to time in the normal course of business. We believe that the final disposition of any such matters will not not

Note 7 - Shareholders' Equity

Note 7 - Shareholders' Equity	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Shareholders' Equity and Share-based Payments [Text Block]	Note 7 - Shareholders' Equity a. Stock-Based Compensation Expense We recorded non-cash stock compensation expense in each period as follows: Year ended December 31 201 9 201 8 Stock options $ 623 $ 817 Restricted stock grants 130 73 Total $ 753 $ 890 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, 2019, 610,628 2004 931,164 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. 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, 2019. As of December 31, 2019, $737 1.2 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, 2019 2018: Year ended December 31 2019 2018 Risk-free interest rate 1.8 % 2.6 % Volatility factor 48.3 % 46.8 % Weighted average expected life (years) 5.3 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, 2019 2018. 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 e nded December 31, 201 9 Number of share s Weighted average exercise price per share Weighted average remaining contractual term Aggregate intrinsic value Shares under option – January 1 1,576,087 $ 6.58 Options granted 282,500 8.27 Options exercised (208,881 ) 4.45 Options forfeited or expired (107,914 ) 10.93 Shares under option – December 31 1,541,792 $ 6.88 3.21 $ 1,991 Vested and expected to vest - December 31 1,445,563 $ 6.79 3.04 $ 1,959 Options exercisable – December 31 1,083,581 $ 6.28 2.09 $ 1,872 Year e nded December 31, 201 8 Number of shares Weighted average exercise price per share 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 Options exercisable – December 31 1,064,127 $ 5.89 The following table represents additional information about stock options outstanding at December 31, 2019: Option outstanding Options exercisable Range of exercise prices Number of outstanding options Weighted- average remaining contractual life Weighted- average exercise price Number of options exercisable Weighted- average exercise price $3.22 - $3.99 244,377 1.70 $ 3.82 244,377 $ 3.82 $4.00 - $5.99 336,331 3.81 4.95 269,601 4.79 $6.00 - $9.99 761,084 4.02 7.89 369,603 6.99 $10.00 200,000 1.00 10.00 200,000 10.00 $3.22 - $10.00 1,541,792 3.21 $ 6.88 1,083,581 $ 6.28 The weighted average fair value of options granted during the years ended December 31, 2019 2018 $3.77 $4.22, December 31, 2019 2018 $931 $1,722, Cash received from option exercises under our stock-based compensation plans for the years ended December 31, 2019 2018 $930 $1,568, c. Restricted Stock Awards In April 2019, 20,000 $11.12 January 2018, 17,500 $7.16 three $145 December 31, 2019. d. Reserved Shares There were 486,272 December 31, 2019.

Note 8 - Income Taxes

Note 8 - Income Taxes	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 8 - Income Taxes For the years ended December 31, 2019 2018, $1,457 $18,386 Year ended December 31 2019 2018 Current: Federal $ - $ - State 43 - Foreign 203 257 246 257 Deferred: Federal 1,236 (18,514 ) State - - Foreign (25 ) (129 ) 1,211 (18,643 ) Total income tax provision $ 1,457 $ (18,386 ) The income tax benefit for 2018 $18,652 December 31, 2018. As of December 31, 2018, 2015 2020 2035, 2028 2037. not December 31, 2019, $58,400 $1,907, As of December 31, 2019 2018, $10,600, not not, may no December 31, 2019 2018, 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: December 31 2019 2018 Deferred tax assets: Property, plant and equipment $ - $ 168 Net operating loss carryforwards 14,579 15,622 Tax credit carryforwards 1,907 1,817 Intangible assets 1,283 1,231 Accrued expenses, reserves and other 2,265 1,838 Total deferred tax assets 20,034 20,676 Valuation allowance for deferred tax assets (1,942 ) (1,942 ) Net deferred tax assets 18,092 18,734 Deferred tax liabilities: Other - (25 ) Property, plant and equipment (342 ) - Intangible assets (5,087 ) (3,856 ) Total deferred tax liabilities (5,429 ) (3,881 ) Net deferred tax assets $ 12,663 $ 14,853 Net deferred tax assets (liabilities) are comprised of the following balance sheet amounts: December 31 2019 2018 Deferred tax assets $ 13,222 $ 15,444 Deferred tax liabilities (559 ) (591 ) $ 12,663 $ 14,853 At December 31, 2019, For financial reporting purposes, income from continuing operations before income taxes is as follows: Year ended December 31 2019 2018 United States $ 5,992 $ 6,226 Foreign 779 387 $ 6,771 $ 6,613 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: Year ended December 31 2019 2018 Statutory income tax rate 21 % 21 % (Increase) decrease in tax provision resulting from: Equity compensation (0.4 ) (2.9 ) Income tax credits (0.4 ) (1.0 ) Foreign tax rates (0.5 ) 0.3 Valuation allowance - (297.3 ) Other 1.8 2.0 Effective income tax rate 21.5 % (277.9 )% Accounting for Uncertainty in Income Taxes There were no December 31, 2019 2018. 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 2019 2000 2019 2010 2019

Note 9 - Operating Leases

Note 9 - Operating Leases	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	Note 9 – Operating Leases The Company has operating leases predominantly for operating facilities. As of December 31, 2019, one 5 not no no July 2019, five The components of lease expense for the current and prior-year comparative periods were as follows: Year ended December 31 2019 2018 Operating lease cost $ 628 $ 590 Variable lease cost 84 89 Total lease cost $ 712 $ 679 Supplemental cash flow information related to leases was as follows: Year ended December 31 2019 2018 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 611 $ 592 Right-of-use assets obtained in exchange for lease liabilities: $ 1,586 $ - Supplemental balance sheet information related to leases was as follows: December 31 Balance Sheet Classification 2019 2018 Assets: Operating lease right-of-use asset Other noncurrent assets $ 1,866 $ 805 Liabilities: Current operating lease liability Accrued expenses and other current liabilities $ 620 $ 439 Operating lease liability, net of current portion Other noncurrent liabilities 1,247 376 Total operating lease liability $ 1,867 $ 815 Weighted-average remaining lease term (years) 3.7 2.1 Weighted-average discount rate 4.5 % 4.5 % Future minimum lease payments as of December 31, 2019 Maturity of Operating Lease Liabilities 2020 685 2021 470 2022 355 2023 364 2024 182 Thereafter 0 Total lease payments 2,056 Less: Imputed interest (189 ) Present value of remaining lease payments $ 1,867

Note 10 - 401(k) Retirement Ben

Note 10 - 401(k) Retirement Benefit Plan	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Pension and Other Postretirement Benefits Disclosure [Text Block]	Note 10 - 401 We maintain a defined contribution 401 401 may, December 31, 2019, 50% first 6% 3% December 31, 2018, 50% first 4% 2019 2018, $319 $204, 401

Note 11 - Business Segment Info

Note 11 - Business Segment Information	12 Months Ended
	Dec. 31, 2019
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 11 - Business Segment Information We report our results in two 9 2019: Battery & Energy Products Communications Systems Corporate Total Revenue $ 83,996 $ 22,799 $ - $ 106,795 Segment contribution 22,813 8,352 (23,797 ) 7,368 Other expense 597 597 Income tax expense 1,457 1,457 Non-controlling interest 109 109 Net income attributable to Ultralife $ 5,205 Total assets $ 79,413 $ 40,458 $ 24,686 $ 144,557 Capital expenditures $ 5,805 $ 44 $ 432 $ 6,281 Goodwill $ 15,260 $ 11,493 - $ 26,753 Depreciation and amortization of intangible assets $ 2,104 $ 364 $ 277 $ 2,745 Stock-based compensation $ 355 $ 119 $ 279 $ 753 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 $ 50,648 $ 27,482 $ 42,718 $ 120,848 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 Long-lived assets (including goodwill and intangible assets) held outside the U.S., principally in the United Kingdom and China, were $12,414 $11,502 December 31, 2019 2018, U.S. and Non-U.S. Revenue Information 1 : 201 9 : Total Revenue United States Non-United States Battery & Energy Products $ 83,996 $ 42,224 $ 41,772 Communications Systems 22,799 21,151 1,648 Total $ 106,795 $ 63,375 $ 43,420 59 % 41 % 201 8 : 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 % 1 may Commercial and Government/Defense Revenue Information: 201 9 : Total Revenue Commercial Government/ Defense Battery & Energy Products $ 83,996 $ 59,682 $ 24,314 Communications Systems 22,799 - 22,799 Total $ 106,795 $ 59,682 $ 47,113 56 % 44 % 201 8 : 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 %

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
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), Southwest Electronic Energy Corporation and its wholly-owned subsidiary, CLB, INC. (“SWE” collectively) (Note 2
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, 2019 2018.
Cash and Cash Equivalents, Policy [Policy Text Block]	e . Cash Our cash balances may not not
Receivable [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 – 40 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 [Policy Text Block]	k . Revenue Recognition 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 years ended December 31, 2019 2018 not As of December 31, 2019 2018, no one 606, Deferred revenue, unbilled revenue and deferred contract costs recorded on our consolidated balance sheets as of December 31, 2019 2018 not
Guarantees, Indemnifications and Warranties Policies [Policy Text Block]	l. Warranty Reserves We generally offer standard warranties against product defects. We do not 6.
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, 2019 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, 2019 2018, $8,025 $5,230, $1,220 $722,
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 two 14% 12% 2019, 7% 16% 2018, 2019 two 64% 15% 2018 two 34% 20% no 10% Currently, we do not We generally do not 2019 2018, 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, 2019 2018.
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, 2019, 899,041 31,666 396,536 642,751 December 31, 2019 For the year ended December 31, 2018, 1,127,837 17,500 465,004 448,250 December 31, 2018
Share-based Payment Arrangement [Policy Text Block]	u. Stock-Based Compensation We have various stock-based employee compensation plans that are described more fully in Note 7.
Segment Reporting, Policy [Policy Text Block]	v. Segment Reporting We have two
New Accounting Pronouncements, Policy [Policy Text Block]	w. Recent Accounting Pronouncements Recently Adopted Accounting Guidance Leases Effective January 1, 2019, 2016 02 Leases 842 not December 31, 2018 The Company adopted the new standard applying the modified retrospective approach. The Company measured and recognized leases upon adoption which had commenced as of the beginning or during the prior year. The package of practical expedients permitted under the transition guidance of the new standard was elected which allowed us to carry forward the historical lease classification and determination of whether an arrangement is or contains a lease on existing leases. The use-of-hindsight transition practical expedient was applied to determine the lease term for existing leases, which resulted in the lengthening of the lease term at commencement for one At contract inception, the Company determines whether the arrangement is or contains a lease and determines the lease classification. The lease term is determined based on the non-cancellable term of the lease adjusted to the extent optional renewal terms and termination rights are reasonably certain. Lease expense is recognized evenly over the lease term. Variable lease payments are recognized as period costs. The present value of remaining lease payments is recognized as a liability on the balance sheet with a corresponding right-of-use asset adjusted for prepaid or accrued lease payments. The Company uses its incremental borrowing rate for the discount rate, unless the interest rate implicit in the lease contract is readily determinable. The Company has adopted the practical expedients to not not The impact on the consolidated balance sheet as of December 31, 2018 Impact to Previously Reported Results Consolidated Balance Sheet as of December 31, 2018: As Previously Reported Lease Standard Adjustment As Adjusted Other noncurrent assets $ 82 $ 805 $ 887 Prepaid expenses and other current assets 2,429 (61 ) 2,368 Accrued expenses and other current liabilities 3,534 439 3,973 Other noncurrent liabilities 32 376 408 Accumulated deficit (57,964 ) (71 ) (58,035 ) See Note 9 Recent Accounting Guidance Not In June 2016, 2016 13, 326 December 15, 2022. In January 2017, 2017 04, 350 two December 15, 2019

Note 1 - Summary of Options a_2

Note 1 - Summary of Options and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Property, Plant and Equipment, Estimated Useful Life [Table Text Block]	Buildings 10 – 40 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
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]	As Previously Reported Lease Standard Adjustment As Adjusted Other noncurrent assets $ 82 $ 805 $ 887 Prepaid expenses and other current assets 2,429 (61 ) 2,368 Accrued expenses and other current liabilities 3,534 439 3,973 Other noncurrent liabilities 32 376 408 Accumulated deficit (57,964 ) (71 ) (58,035 )

Note 2 - Acquisition (Tables)

Note 2 - Acquisition (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Cash $ 942 Accounts receivable 3,621 Inventories 4,685 Other current assets 431 Property, plant and equipment 9,177 Goodwill 6,534 Customer relationships 2,522 Trade name 1,127 Accounts payable (1,060 ) Other current liabilities (778 ) Deferred tax liability, net (1,011 ) Net assets acquired $ 26,190
Business Acquisition, Pro Forma Information [Table Text Block]	Years Ended December 31 2019 2018 Revenue $ 115,590 $ 115,566 Operating income 8,008 6,278 Net Income attributable to Ultralife Corporation 5,526 24,280 Net income per share attributable to Ultralife Corporation: Basic $ 0.35 $ 1.53 Diluted $ 0.34 $ 1.49

Note 5 - Supplemental Balance_2

Note 5 - Supplemental Balance Sheet Information (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Cash, Cash Equivalents and Investments [Table Text Block]	December 31 201 9 201 8 Cash $ 7,135 $ 25,583 Restricted cash 270 351 Total $ 7,405 $ 25,934
Schedule of Inventory, Current [Table Text Block]	December 31 2019 2018 Raw materials $ 18,485 $ 13,274 Work in process 2,548 2,016 Finished products 8,726 7,553 Total $ 29,759 $ 22,843
Property, Plant and Equipment [Table Text Block]	December 31 2019 2018 Land $ 1,273 $ 123 Buildings and leasehold improvements 8,148 8,267 Machinery and equipment 62,562 51,261 Furniture and fixtures 2,112 2,058 Computer hardware and software 6,528 5,590 Construction in progress 4,730 4,302 85,353 71,601 Less – Accumulated depreciation (62,828 ) (60,857 ) Total $ 22,525 $ 10,744
Schedule of Goodwill [Table Text Block]	Battery & Energy Products Communications Systems Total Balance – January 1, 2018 $ 8,965 $ 11,493 $ 20,458 Effect of foreign currency translation (349 ) - (349 ) Balance – December 31, 2018 8,616 11,493 20,109 Acquisition of SWE 6,534 - 6,534 Effect of foreign currency translation 110 - 110 Balance – December 31, 2019 $ 15,260 $ 11,493 $ 26,753
Schedule of Finite-Lived Intangible Assets [Table Text Block]	December 31, 201 9 Cost Accumulated amortization Net Trademarks $ 3,403 $ - $ 3,403 Customer relationships 9,080 4,721 4,359 Patents and technology 5,521 4,869 652 Distributor relationships 377 377 - Trade name 1,511 204 1,307 Total other intangible assets $ 19,892 $ 10,171 $ 9,721 December 31, 201 8 Cost Accumulated a mortization 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
Finite-lived Intangible Assets Amortization Expense [Table Text Block]	Year ended December 31 201 9 2018 Research and development expense $ 130 $ 147 Selling, general and administrative expense 395 250 Total $ 525 $ 397

Note 6 - Commitments and Cont_2

Note 6 - Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Product Warranty Liability [Table Text Block]	201 9 201 8 Balance, January 1 $ 95 $ 149 Assumed warranty obligations – SWE 145 - Provision for warranties issued 114 7 Settlements made (159 ) (61 ) Balance, December 31 $ 195 $ 95

Note 7 - Shareholders' Equity (

Note 7 - Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]	Year ended December 31 201 9 201 8 Stock options $ 623 $ 817 Restricted stock grants 130 73 Total $ 753 $ 890
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Year ended December 31 2019 2018 Risk-free interest rate 1.8 % 2.6 % Volatility factor 48.3 % 46.8 % Weighted average expected life (years) 5.3 5.0 Forfeiture rate 10.0 % 10.0 % Dividends 0.0 % 0.0 %
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Year e nded December 31, 201 9 Number of share s Weighted average exercise price per share Weighted average remaining contractual term Aggregate intrinsic value Shares under option – January 1 1,576,087 $ 6.58 Options granted 282,500 8.27 Options exercised (208,881 ) 4.45 Options forfeited or expired (107,914 ) 10.93 Shares under option – December 31 1,541,792 $ 6.88 3.21 $ 1,991 Vested and expected to vest - December 31 1,445,563 $ 6.79 3.04 $ 1,959 Options exercisable – December 31 1,083,581 $ 6.28 2.09 $ 1,872 Year e nded December 31, 201 8 Number of shares Weighted average exercise price per share 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 Options exercisable – December 31 1,064,127 $ 5.89
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]	Option outstanding Options exercisable Range of exercise prices Number of outstanding options Weighted- average remaining contractual life Weighted- average exercise price Number of options exercisable Weighted- average exercise price $3.22 - $3.99 244,377 1.70 $ 3.82 244,377 $ 3.82 $4.00 - $5.99 336,331 3.81 4.95 269,601 4.79 $6.00 - $9.99 761,084 4.02 7.89 369,603 6.99 $10.00 200,000 1.00 10.00 200,000 10.00 $3.22 - $10.00 1,541,792 3.21 $ 6.88 1,083,581 $ 6.28

Note 8 - Income Taxes (Tables)

Note 8 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Year ended December 31 2019 2018 Current: Federal $ - $ - State 43 - Foreign 203 257 246 257 Deferred: Federal 1,236 (18,514 ) State - - Foreign (25 ) (129 ) 1,211 (18,643 ) Total income tax provision $ 1,457 $ (18,386 )
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31 2019 2018 Deferred tax assets: Property, plant and equipment $ - $ 168 Net operating loss carryforwards 14,579 15,622 Tax credit carryforwards 1,907 1,817 Intangible assets 1,283 1,231 Accrued expenses, reserves and other 2,265 1,838 Total deferred tax assets 20,034 20,676 Valuation allowance for deferred tax assets (1,942 ) (1,942 ) Net deferred tax assets 18,092 18,734 Deferred tax liabilities: Other - (25 ) Property, plant and equipment (342 ) - Intangible assets (5,087 ) (3,856 ) Total deferred tax liabilities (5,429 ) (3,881 ) Net deferred tax assets $ 12,663 $ 14,853
Schedule of Net Deferred Tax Liabilities [Table Text Block]	<table style="margin-right: 15%; margin-left: 54pt; font-size: 10pt; font-family: "Times New Roman", Times, serif; text-indent: 0px; min-; min-width: 700px;" cellspacing="0" cellpadding="0" border="0"> <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; border-bottom: thin 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;">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;">2019</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;">2018</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;">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">13,222</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</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 style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> </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;">(559</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;" nowrap="nowrap">)</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 style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;" nowrap="nowrap">)</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);">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">12,663</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;" nowrap="nowrap"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</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 style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> </table></div>" id="sjs-B6">&lt;div style="display: inline; font-family: times new roman; font-size: 10pt">&lt;table style="margin-right: 15%; margin-left: 54pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px; min-; min-width: 700px;" cellspacing="0" cellpadding="0" border="0"> &lt;tr style="vertical-align: bottom;"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: thin solid rgb(0, 0, 0);"> &lt;div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&lt;div style="display: inline; font-weight: bold;">&lt;div style="display: inline; font-weight: bold;">December 31&lt;/div>&lt;/div>&lt;/div> &lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom;"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> &lt;div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&lt;div style="display: inline; font-weight: bold;">&lt;div style="display: inline; font-weight: bold;">2019&lt;/div>&lt;/div>&lt;/div> &lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&nbsp;&lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> &lt;div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&lt;div style="display: inline; font-weight: bold;">&lt;div style="display: inline; font-weight: bold;">2018&lt;/div>&lt;/div>&lt;/div> &lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom;"> &lt;td>&nbsp;&lt;/td> &lt;td>&nbsp;&lt;/td> &lt;td>&nbsp;&lt;/td> &lt;td>&nbsp;&lt;/td> &lt;td>&nbsp;&lt;/td> &lt;td>&nbsp;&lt;/td> &lt;td>&nbsp;&lt;/td> &lt;td>&nbsp;&lt;/td> &lt;td>&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 64%;"> &lt;div style=" font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Deferred tax assets&lt;/div> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$&lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">13,222&lt;/div>&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$&lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">15,444&lt;/div>&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;div style=" font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Deferred tax liabilities&lt;/div> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&nbsp;&lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">(559&lt;/div>&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;" nowrap="nowrap">)&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&nbsp;&lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">(591&lt;/div>&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;" nowrap="nowrap">)&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$&lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">12,663&lt;/div>&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$&lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">14,853&lt;/div>&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;" nowrap="nowrap">&nbsp;&lt;/td> &lt;/tr> &lt;/table>&lt;/div>
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	Year ended December 31 2019 2018 United States $ 5,992 $ 6,226 Foreign 779 387 $ 6,771 $ 6,613
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Year ended December 31 2019 2018 Statutory income tax rate 21 % 21 % (Increase) decrease in tax provision resulting from: Equity compensation (0.4 ) (2.9 ) Income tax credits (0.4 ) (1.0 ) Foreign tax rates (0.5 ) 0.3 Valuation allowance - (297.3 ) Other 1.8 2.0 Effective income tax rate 21.5 % (277.9 )%

Note 9 - Operating Leases (Tabl

Note 9 - Operating Leases (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Lease, Cost [Table Text Block]	Year ended December 31 2019 2018 Operating lease cost $ 628 $ 590 Variable lease cost 84 89 Total lease cost $ 712 $ 679
Lessee, Lease, Cash Flow Information [Table Text Block]	Year ended December 31 2019 2018 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 611 $ 592 Right-of-use assets obtained in exchange for lease liabilities: $ 1,586 $ -
Lessee, Lease, Balance Sheet Information [Table Text Block]	December 31 Balance Sheet Classification 2019 2018 Assets: Operating lease right-of-use asset Other noncurrent assets $ 1,866 $ 805 Liabilities: Current operating lease liability Accrued expenses and other current liabilities $ 620 $ 439 Operating lease liability, net of current portion Other noncurrent liabilities 1,247 376 Total operating lease liability $ 1,867 $ 815 Weighted-average remaining lease term (years) 3.7 2.1 Weighted-average discount rate 4.5 % 4.5 %
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Maturity of Operating Lease Liabilities 2020 685 2021 470 2022 355 2023 364 2024 182 Thereafter 0 Total lease payments 2,056 Less: Imputed interest (189 ) Present value of remaining lease payments $ 1,867

Note 11 - Business Segment In_2

Note 11 - Business Segment Information (Tables)	12 Months Ended
	Dec. 31, 2019
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Battery & Energy Products Communications Systems Corporate Total Revenue $ 83,996 $ 22,799 $ - $ 106,795 Segment contribution 22,813 8,352 (23,797 ) 7,368 Other expense 597 597 Income tax expense 1,457 1,457 Non-controlling interest 109 109 Net income attributable to Ultralife $ 5,205 Total assets $ 79,413 $ 40,458 $ 24,686 $ 144,557 Capital expenditures $ 5,805 $ 44 $ 432 $ 6,281 Goodwill $ 15,260 $ 11,493 - $ 26,753 Depreciation and amortization of intangible assets $ 2,104 $ 364 $ 277 $ 2,745 Stock-based compensation $ 355 $ 119 $ 279 $ 753 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 $ 50,648 $ 27,482 $ 42,718 $ 120,848 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
Revenue from External Customers by Geographic Areas [Table Text Block]	201 9 : Total Revenue United States Non-United States Battery & Energy Products $ 83,996 $ 42,224 $ 41,772 Communications Systems 22,799 21,151 1,648 Total $ 106,795 $ 63,375 $ 43,420 59 % 41 % 201 8 : 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 %
Schedule of Revenues from External Customers by Business Segment Sector [Table Text Block]	201 9 : Total Revenue Commercial Government/ Defense Battery & Energy Products $ 83,996 $ 59,682 $ 24,314 Communications Systems 22,799 - 22,799 Total $ 106,795 $ 59,682 $ 47,113 56 % 44 % 201 8 : 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 %

Note 1 - Summary of Options a_3

Note 1 - Summary of Options and Significant Accounting Policies (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)shares	Dec. 31, 2018USD ($)shares
Research and Development Expense, Gross | $	$ 8,025	$ 5,230
Customer Funded Research and Development Expense Included in Cost of Goods Sold | $	$ 1,220	$ 722
Weighted Average Number Diluted Shares Outstanding Adjustment, Total	396,536	465,004
Number of Operating Segments	2
Share-based Payment Arrangement, Option [Member]
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total	899,041	1,127,837
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	642,751	448,250
Restricted Stock [Member]
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total	31,666	17,500
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Major Customers	2	2
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Large Defense Primary Contractor, 1 [Member]
Concentration Risk, Percentage	14.00%	7.00%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Large Defense Primary Contractor, 2 [Member]
Concentration Risk, Percentage	12.00%	16.00%
Customer Concentration Risk [Member] | Revenue, Segment Benchmark [Member]
Number of Major Customers	2	2
Customer Concentration Risk [Member] | Revenue, Segment Benchmark [Member] | Two Customers [Member] | Communications Systems Segment [Member]
Concentration Risk, Percentage	64.00%	34.00%
Customer Concentration Risk [Member] | Revenue, Segment Benchmark [Member] | Two Customers [Member] | Battery & Energy Products Segment [Member]
Concentration Risk, Percentage	15.00%	20.00%

Note 1 - Summary of Operations

Note 1 - Summary of Operations and Significant Accounting Policies - Property, Plant and Equipment Estimated Useful Life (Details)	12 Months Ended
	Dec. 31, 2019
Building [Member] | Minimum [Member]
Estimated useful lives (Year)	10 years
Building [Member] | Maximum [Member]
Estimated useful lives (Year)	40 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 1 - Summary of Operation_2

Note 1 - Summary of Operations and Significant Accounting Policies - Impact to Previously Reported Results (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other noncurrent assets	$ 1,963	$ 887
Prepaid expenses and other current assets	3,103	2,368
Accrued expenses and other current liabilities		3,973
Other noncurrent liabilities	1,278	408
Accumulated deficit	$ (52,830)	(58,035)
Previously Reported [Member]
Other noncurrent assets		82
Prepaid expenses and other current assets		2,429
Accrued expenses and other current liabilities		3,534
Other noncurrent liabilities		32
Accumulated deficit		(57,964)
Restatement Adjustment [Member] | Accounting Standards Update 2016-02 [Member]
Other noncurrent assets		805
Prepaid expenses and other current assets		(61)
Accrued expenses and other current liabilities		439
Other noncurrent liabilities		376
Accumulated deficit		$ (71)

Note 2 - Acquisition (Details T

Note 2 - Acquisition (Details Textual) - USD ($) $ in Thousands	May 01, 2019	Dec. 31, 2019	Dec. 31, 2018
Payments to Acquire Businesses, Net of Cash Acquired, Total		$ 25,248
Payments of Debt Issuance Costs		157
Southwest Electronic Energy Corporation [Member]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		18,746
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		1,238
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory		264
Business Combination, Acquisition Related Costs		165
Southwest Electronic Energy Corporation [Member]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Payments to Acquire Businesses, Net of Cash Acquired, Total	$ 26,190
Cash Acquired from Acquisition	$ 942
Business Combination, Acquisition Related Costs		322
Business Combination, Interest Expense, Financing		453
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles		161
Payments of Debt Issuance Costs		$ 157
Long-term Debt, Weighted Average Term		4 years 219 days
Southwest Electronic Energy Corporation [Member] | Accounting, Legal, and Due Diligence Services [Member]
Business Combination, Acquisition Related Costs		$ 165

Note 2 - Acquisition - Assets A

Note 2 - Acquisition - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2019	May 01, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill	$ 26,753		$ 20,109	$ 20,458
Southwest Electronic Energy Corporation [Member]
Cash		$ 942
Accounts receivable		3,621
Inventories		4,685
Other current assets		431
Property, plant and equipment		9,177
Goodwill		6,534
Accounts payable		(1,060)
Other current liabilities		(778)
Deferred tax liability, net		(1,011)
Net assets acquired		26,190
Southwest Electronic Energy Corporation [Member] | Customer Relationships [Member]
Intangible assets		2,522
Southwest Electronic Energy Corporation [Member] | Trade Names [Member]
Intangible assets		$ 1,127

Note 2 - Acquisition - Pro Form

Note 2 - Acquisition - Pro Forma Information (Details) - Southwest Electronic Energy Corporation [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenue	$ 115,590	$ 115,566
Operating income	8,008	6,278
Net Income attributable to Ultralife Corporation	$ 5,526	$ 24,280
Basic (in dollars per share)	$ 0.35	$ 1.53
Diluted (in dollars per share)	$ 0.34	$ 1.49

Note 3 - Debt (Details Textual)

Note 3 - Debt (Details Textual) $ in Thousands	May 01, 2019USD ($)Rate	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	May 31, 2019
Proceeds from Long-term Lines of Credit		$ 10,182
Term Loan Facility [Member]
Debt Instrument, Number of Monthly Payment				60
Amended Credit Agreement [Member]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months		1,420
Long-term Debt, Maturities, Repayments of Principal in Year Two		11,650
Long-term Debt, Maturities, Repayments of Principal in Year Three		1,519
Long-term Debt, Maturities, Repayments of Principal in Year Four		1,355
Amended Credit Agreement [Member] | Term Loan Facility [Member]
Secured Debt, Total		$ 7,134
Debt Instrument, Interest Rate, Effective Percentage		3.41%
Amended Credit Agreement [Member] | Term Loan Facility [Member] | Long-term Debt, Current Maturities [Member]
Secured Debt, Total		$ 1,372
Amended Credit Agreement [Member] | Revolving Credit Facility [Member]
Proceeds from Long-term Lines of Credit	$ 6,782
Long-term Line of Credit, Total		10,182
Debt Issuance Costs, Gross		$ 164
Minimum Fixed Charge Coverage Ratio	1.15
Maximum Consolidated Senior Leverage Ratio | Rate	250.00%
Debt Instrument, Interest Rate, Effective Percentage		3.56%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.10%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.20%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	1.85%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	2.15%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	0.00%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Base Rate [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	(0.50%)
KeyBank [Member] | Amended Credit Agreement [Member] | Term Loan Facility [Member]
Debt Instrument, Term	5 years
Debt Instrument, Face Amount	$ 8,000
KeyBank [Member] | Amended Credit Agreement [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	30,000
Line Of Credit Facility Maximum Borrowing Capacity Contingent On Bank Approval	$ 50,000

Note 4 - Share Repurchase Pro_2

Note 4 - Share Repurchase Program (Details Textual) - USD ($) $ in Thousands	12 Months Ended		14 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Nov. 01, 2018
Treasury Stock, Shares, Acquired	267,300		372,974
Treasury Stock, Value, Acquired, Cost Method	$ 1,957	$ 742	$ 2,699
Maximum [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased				2,500,000

Note 5 - Supplemental Balance_3

Note 5 - Supplemental Balance Sheet Information (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance	$ 7,405	$ 25,934	$ 18,330
Restricted Cash and Cash Equivalents, Total	270	351
Revenues, Total	106,795	87,190
Depreciation, Total	$ 2,220	1,972
Number of Reporting Units	5
Goodwill, Impairment Loss	$ 0	0
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	360
Finite-Lived Intangible Assets, Amortization Expense, Year Two	341
Finite-Lived Intangible Assets, Amortization Expense, Year Three	326
Finite-Lived Intangible Assets, Amortization Expense, Year Four	323
Finite-Lived Intangible Assets, Amortization Expense, Year Five	313
Grant [Member]
Revenues, Total	78
CHINA
Restricted Cash and Cash Equivalents, Total	188	266
NETHERLANDS
Restricted Cash and Cash Equivalents, Total	$ 82	$ 85

Note 5 - Supplemental Balance_4

Note 5 - Supplemental Balance Sheet Information - Cash and Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash	$ 7,135	$ 25,583
Restricted cash	270	351
Total	$ 7,405	$ 25,934	$ 18,330

Note 5 - Supplemental Balance_5

Note 5 - Supplemental Balance Sheet Information - Components of Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Raw materials	$ 18,485	$ 13,274
Work in process	2,548	2,016
Finished products	8,726	7,553
Total	$ 29,759	$ 22,843

Note 5 - Supplemental Balance_6

Note 5 - Supplemental Balance Sheet Information - Components of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, plant and equipment, gross	$ 85,353	$ 71,601
Less – Accumulated depreciation	(62,828)	(60,857)
Total	22,525	10,744
Land [Member]
Property, plant and equipment, gross	1,273	123
Building and Building Improvements [Member]
Property, plant and equipment, gross	8,148	8,267
Machinery and Equipment [Member]
Property, plant and equipment, gross	62,562	51,261
Furniture and Fixtures [Member]
Property, plant and equipment, gross	2,112	2,058
Computer Equipment [Member]
Property, plant and equipment, gross	6,528	5,590
Construction in Progress [Member]
Property, plant and equipment, gross	$ 4,730	$ 4,302

Note 5 - Supplemental Balance_7

Note 5 - Supplemental Balance Sheet Information - Summary of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill balance	$ 20,109	$ 20,458
Effect of foreign currency translation	110	(349)
Acquisition of SWE	6,534
Goodwill balance	26,753	20,109
Battery & Energy Products Segment [Member]
Goodwill balance	8,616	8,965
Effect of foreign currency translation	110	(349)
Acquisition of SWE	6,534
Goodwill balance	15,260	8,616
Communications Systems Segment [Member]
Goodwill balance	11,493	11,493
Effect of foreign currency translation
Acquisition of SWE
Goodwill balance	$ 11,493	$ 11,493

Note 5 - Supplemental Balance_8

Note 5 - Supplemental Balance Sheet Information - Composition of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Cost	$ 19,892	$ 16,109
Accumulated Amortization	10,171	9,605
Net	9,721	6,504
Trademarks [Member]
Cost	3,403	3,405
Accumulated Amortization	0	0
Net	3,403	3,405
Customer Relationships [Member]
Cost	9,080	6,471
Accumulated Amortization	4,721	4,392
Net	4,359	2,079
Patented Technology [Member]
Cost	5,521	5,486
Accumulated Amortization	4,869	4,725
Net	652	761
Distributor Relationships [Member]
Cost	377	377
Accumulated Amortization	377	377
Net
Trade Names [Member]
Cost	1,511	370
Accumulated Amortization	204	111
Net	$ 1,307	$ 259

Note 5 - Supplemental Balance_9

Note 5 - Supplemental Balance Sheet Information - Amortization of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Amortization of intangible assets	$ 525	$ 397
Research and Development Expense [Member]
Amortization of intangible assets	130	147
Selling, General and Administrative Expenses [Member]
Amortization of intangible assets	$ 395	$ 250

Note 6 - Commitments and Cont_3

Note 6 - Commitments and Contingencies (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Capital Addition Purchase Commitments [Member]
Long-term Purchase Commitment, Amount	$ 1,185

Note 6 - Commitments and Cont_4

Note 6 - Commitments and Contingencies - Changes in Produce Warranty Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Balance, January 1	$ 95	$ 149
Assumed warranty obligations – SWE	145
Provision for warranties issued	114	7
Settlements made	(159)	(61)
Balance, December 31	$ 195	$ 95

Note 7 - Shareholders' Equity_2

Note 7 - Shareholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	Jul. 25, 2018	Dec. 30, 2010	Apr. 30, 2019	Jan. 31, 2018	Jun. 30, 2014	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2004
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance							1,541,792	1,576,087	1,860,211
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross							282,500	217,500
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price							$ 8.27	$ 9.68
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount							$ 737
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition							1 year 73 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value							$ 3.77	$ 4.22
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value							$ 931	$ 1,722
Proceeds from Stock Options Exercised							$ 930	$ 1,568
Common Stock, Capital Shares Reserved for Future Issuance							486,272
Restricted Stock [Member]
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount							$ 145
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							610,628	931,164
The 2004 Long-term Incentive Plan [Member] | President [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		5 years
Option Accelerated Vesting, Stock Price Trigger	$ 10
Option Accelerated Vesting, Threshold Trading Days	15 days
Share-based Payment Arrangement, Accelerated Cost						$ 182
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 2014 Long-term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized					1,750,000
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			20,000	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			$ 11.12	$ 7.16
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 7 - Stock-based Compensati

Note 7 - Stock-based Compensation - Non-cash Stock Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Stock-based comepensation expense	$ 753	$ 890
Share-based Payment Arrangement, Option [Member]
Stock-based comepensation expense	623	817
Restricted Stock [Member]
Stock-based comepensation expense	$ 130	$ 73

Note 7 - Stock-based Compensa_2

Note 7 - Stock-based Compensation - Stock Option Assumptions (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Risk-free interest rate	1.80%	2.60%
Volatility factor	48.30%	46.80%
Weighted Average Expected Life (Year)	5 years 109 days	5 years
Forfeiture rate	10.00%	10.00%
Dividends	0.00%	0.00%

Note 7 - Shareholders' Equity -

Note 7 - Shareholders' Equity - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Shares under Option, beginning 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 granted (in shares)	282,500	217,500
Options granted - weighted average exercise price (in dollars per share)	$ 8.27	$ 9.68
Options exercised (in shares)	(208,881)	(422,793)
Options exercised - weighted average exercise price (in dollars per share)	$ 4.45	$ 4.49
Options forfeited or expired (in shares)	(107,914)	(78,831)
Options forfeited or expired - weighted average exercise price (in dollars per share)	$ 10.93	$ 11.75
Shares under option, end of period (in shares)	1,541,792	1,576,087
Options outstanding - weighted average exercise price (in dollars per share)	$ 6.88	$ 6.58
Options outstanding - weighted average remaining contractual term (Year)	3 years 76 days
Options outstanding - aggregate intrinsic value	$ 1,991
Vested and Expected to Vest (in shares)	1,445,563
Options vested and expected to vest - weighted average exercise price (in dollars per share)	$ 6.79
Options vested and expected to vest - weighted average remaining contractual term (Year)	3 years 14 days
Options vested and expected to vest - aggregate intrinsic value	$ 1,959
Options Exercisable (in shares)	1,083,581	1,064,127
Options exercisable, weighted-average exercise price (in dollars per share)	$ 6.28	$ 5.89
Options exercisable - weighted average remaining contractual term (Year)	2 years 32 days
Options exercisable - aggregate intrinsic value	$ 1,872

Note 7 - Shareholders' Equity_3

Note 7 - Shareholders' Equity - Options Range of Exercise Prices (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Lower range limit (in dollars per share)	$ 3.22
Upper range limit (in dollars per share)	$ 10
Options outstanding, number of outstanding options (in shares)	1,541,792
Options outstanding, weighted-average remaining contractual life (Year)	3 years 76 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 6.88
Options exercisable, number of options exercisable (in shares)	1,083,581
Options exercisable, weighted-average exercise price (in dollars per share)	$ 6.28	$ 5.89
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)	244,377
Options outstanding, weighted-average remaining contractual life (Year)	1 year 255 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 3.82
Options exercisable, number of options exercisable (in shares)	244,377
Options exercisable, weighted-average exercise price (in dollars per share)	$ 3.82
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)	336,331
Options outstanding, weighted-average remaining contractual life (Year)	3 years 295 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 4.95
Options exercisable, number of options exercisable (in shares)	269,601
Options exercisable, weighted-average exercise price (in dollars per share)	$ 4.79
Range Three [Member]
Lower range limit (in dollars per share)	6
Upper range limit (in dollars per share)	$ 9.99
Options outstanding, number of outstanding options (in shares)	761,084
Options outstanding, weighted-average remaining contractual life (Year)	4 years 7 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 7.89
Options exercisable, number of options exercisable (in shares)	369,603
Options exercisable, weighted-average exercise price (in dollars per share)	$ 6.99
Range Four [Member]
Lower range limit (in dollars per share)	10
Upper range limit (in dollars per share)	$ 10
Options outstanding, number of outstanding options (in shares)	200,000
Options outstanding, weighted-average remaining contractual life (Year)	1 year
Options outstanding, weighted-average exercise price (in dollars per share)	$ 10
Options exercisable, number of options exercisable (in shares)	200,000
Options exercisable, weighted-average exercise price (in dollars per share)	$ 10

Note 8 - Income Taxes (Details

Note 8 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Tax Expense (Benefit), Total	$ 1,457	$ (18,386)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount		18,652
Unrecognized Tax Benefits, Ending Balance	0	$ 0
General Business Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	1,907
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards, Total	$ 58,400
Open Tax Year	2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2012 2013 2014 2015 2016 2017 2018 2019
Foreign Tax Authority [Member]
Open Tax Year	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
Foreign Tax Authority [Member] | Her Majesty's Revenue and Customs (HMRC) [Member]
Operating Loss Carryforwards, Total	$ 10,600
State and Local Jurisdiction [Member]
Open Tax Year	2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2012 2013 2014 2015 2016 2017 2018 2019

Note 8 - Income Taxes - Income

Note 8 - Income Taxes - Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Federal
State	43
Foreign	203	257
Total current tax provision	246	257
Federal	1,236	(18,514)
State
Foreign	(25)	(129)
Total deferred tax provision (benefit)	1,211	(18,643)
Total income tax provision	$ 1,457	$ (18,386)

Note 8 - Income Taxes - Deferre

Note 8 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, plant and equipment		$ 168
Net operating loss carryforwards	14,579	15,622
Tax credit carryforwards	1,907	1,817
Intangible assets	1,283	1,231
Accrued expenses, reserves and other	2,265	1,838
Total deferred tax assets	20,034	20,676
Valuation allowance for deferred tax assets	(1,942)	(1,942)
Net deferred tax assets	18,092	18,734
Other		(25)
Property, plant and equipment	342
Intangible assets	(5,087)	(3,856)
Total deferred tax liabilities	(5,429)	(3,881)
Net deferred tax assets	$ 12,663	$ 14,853

Note 8 - Income Taxes - Net Def

Note 8 - Income Taxes - Net Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets	$ 13,222	$ 15,444
Deferred tax liabilities	(559)	(591)
Net Deferred Tax Assets	$ 12,663	$ 14,853

Note 8 - Income Taxes - United

Note 8 - Income Taxes - United States and Foreign Income (Loss) From Continuing Operations Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
United States	$ 5,992	$ 6,226
Foreign	779	387
Income Before Income Taxes	$ 6,771	$ 6,613

Note 8 - Income Taxes - Effecti

Note 8 - Income Taxes - Effective Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statutory income tax rate	21.00%	21.00%
Equity compensation	(0.40%)	(2.90%)
Income tax credits	(0.40%)	(1.00%)
Foreign tax rates	(0.50%)	0.30%
Valuation allowance		(297.30%)
Other	1.80%	2.00%
Effective income tax rate	21.50%	(277.90%)

Note 9 - Operating Leases (Deta

Note 9 - Operating Leases (Details Textual)	12 Months Ended
	Dec. 31, 2019	Jul. 31, 2019
Shenzhen Facility [Member]
Lessee, Operating Lease, Term of Contract		5 years
Minimum [Member]
Operating Lease, Remaining Lease Term	1 year
Maximum [Member]
Operating Lease, Remaining Lease Term	5 years

Note 9 - Operating Leases - Lea

Note 9 - Operating Leases - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating lease cost	$ 628	$ 590
Variable lease cost	84	89
Total lease cost	$ 712	$ 679

Note 9 - Operating Leases - Sup

Note 9 - Operating Leases - Supplement Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating cash flows from operating leases	$ 611	$ 592
Right-of-use assets obtained in exchange for lease liabilities:	$ 1,586

Note 9 - Operating Leases - S_2

Note 9 - Operating Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Operating lease right-of-use asset	$ 1,866	$ 805
Current operating lease liability	620	439
Operating lease liability, net of current portion	1,247	376
Total operating lease liability	$ 1,867	$ 815
Weighted-average remaining lease term (years) (Year)	3 years 255 days	2 years 36 days
Weighted-average discount rate	4.50%	4.50%

Note 9 - Operating Leases - Fut

Note 9 - Operating Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
2020	$ 685
2021	470
2022	355
2023	364
2024	182
Thereafter	0
Total lease payments	2,056
Less: Imputed interest	(189)
Present value of remaining lease payments	$ 1,867	$ 815

Note 10 - 401(k) Retirement B_2

Note 10 - 401(k) Retirement Benefit Plan (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
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	6.00%	4.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	3.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 319	$ 204

Note 11 - Business Segment In_3

Note 11 - Business Segment Information (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Number of Operating Segments	2
Non-US [Member]
Long-Lived Assets	$ 12,414	$ 11,502

Note 11 - Business Segment In_4

Note 11 - Business Segment Information - Segment Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue	$ 106,795	$ 87,190
Segment contribution	7,368	6,555
Other income (expense)	597	(58)
Income tax provision (benefit)	1,457	(18,386)
Non-controlling interest	109	69
Net income attributable to Ultralife	5,205	24,930
Total assets	144,557	120,848
Capital expenditures	6,281	4,185
Goodwill	26,753	20,109	$ 20,458
Depreciation and amortization of intangible assets	2,745	2,369
Stock-based compensation	753	890
Battery & Energy Products Segment [Member]
Revenue	83,996	70,497
Segment contribution	22,813	19,574
Total assets	79,413	50,648
Capital expenditures	5,805	2,948
Goodwill	15,260	8,616	8,965
Depreciation and amortization of intangible assets	2,104	1,611
Stock-based compensation	355	333
Communications Systems Segment [Member]
Revenue	22,799	16,693
Segment contribution	8,352	6,009
Total assets	40,458	27,482
Capital expenditures	44	614
Goodwill	11,493	11,493	$ 11,493
Depreciation and amortization of intangible assets	364	375
Stock-based compensation	119	106
Corporate Segment [Member]
Revenue
Segment contribution	(23,797)	(19,028)
Other income (expense)	597	(58)
Income tax provision (benefit)	1,457	(18,386)
Non-controlling interest	109	69
Total assets	24,686	42,718
Capital expenditures	432	623
Goodwill
Depreciation and amortization of intangible assets	277	383
Stock-based compensation	$ 279	$ 451

Note 11 - Business Segment In_5

Note 11 - Business Segment Information - Domestic and International Revenue by Segment (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Revenue	[1]	$ 106,795	$ 87,190
Revenue, percentage	[1]
UNITED STATES
Revenue	[1]	$ 63,375	$ 53,054
Revenue, percentage	[1]	59.00%	61.00%
Non-US [Member]
Revenue	[1]	$ 43,420	$ 34,136
Revenue, percentage	[1]	41.00%	39.00%
Battery & Energy Products Segment [Member]
Revenue	[1]	$ 83,996	$ 70,497
Battery & Energy Products Segment [Member] | UNITED STATES
Revenue	[1]	42,224	37,898
Battery & Energy Products Segment [Member] | Non-US [Member]
Revenue	[1]	41,772	32,599
Communications Systems Segment [Member]
Revenue	[1]	22,799	16,693
Communications Systems Segment [Member] | UNITED STATES
Revenue	[1]	21,151	15,156
Communications Systems Segment [Member] | Non-US [Member]
Revenue	[1]	$ 1,648	$ 1,537
[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 11 - Business Segment In_6

Note 11 - Business Segment Information - Revenue by Business Segment Sector (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Revenue	[1]	$ 106,795	$ 87,190
Revenue, percentage	[1]
Commercial [Member]
Revenue		$ 59,682	$ 41,044
Revenue, percentage		56.00%	47.00%
Government & Defense [Member]
Revenue		$ 47,113	$ 46,146
Revenue, percentage		44.00%	53.00%
Battery & Energy Products Segment [Member]
Revenue	[1]	$ 83,996	$ 70,497
Battery & Energy Products Segment [Member] | Commercial [Member]
Revenue		59,682	41,044
Battery & Energy Products Segment [Member] | Government & Defense [Member]
Revenue		24,314	29,453
Communications Systems Segment [Member]
Revenue	[1]	22,799	16,693
Communications Systems Segment [Member] | Commercial [Member]
Revenue
Communications Systems Segment [Member] | Government & Defense [Member]
Revenue		$ 22,799	$ 16,693
[1]	Sales classified to U.S. include shipments to U.S.-based prime contractors which in some cases may serve non-U.S. projects