Ultralife (ULBI) 10-K 8 Mar 22 2021 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 07, 2022	Jun. 30, 2021
Document Information [Line Items]
Entity Central Index Key	0000875657
Entity Registrant Name	Ultralife Corporation
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	0-20852
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	2000 Technology Parkway
Entity Address, City or Town	Newark
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	14513
Entity Tax Identification Number	16-1387013
City Area Code	315
Local Phone Number	332-7100
Title of 12(b) Security	Common Stock, $0.10 par value per share
Trading Symbol	ULBI
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 82,646,501
Entity Common Stock, Shares Outstanding		16,127,082
Auditor Name	Freed Maxick CPAs, P.C.
Auditor Location	Rochester, New York
Auditor Firm ID	317
ICFR Auditor Attestation Flag	true

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current Assets:
Cash	$ 8,413	$ 10,653
Trade accounts receivable, net of allowance for doubtful accounts of $346 and $317, respectively	20,232	21,054
Inventories, net	33,189	28,193
Prepaid expenses and other current assets	4,690	4,596
Total current assets	66,524	64,496
Property, plant and equipment, net	23,205	22,850
Goodwill	38,068	27,018
Other intangible assets, net	17,390	9,209
Deferred income taxes, net	11,472	11,836
Other noncurrent assets	2,879	2,292
Total assets	159,538	137,701
Current Liabilities:
Accounts payable	9,823	10,839
Current portion of long-term debt	2,000	1,361
Accrued compensation and related benefits	1,842	1,748
Accrued expenses and other current liabilities	5,259	4,758
Total current liabilities	18,924	18,706
Long-term debt, net	18,857	0
Deferred income taxes	2,254	515
Other noncurrent liabilities	1,760	1,557
Total liabilities	41,795	20,778
Commitments and contingencies (Note 5)
Shareholders' Equity:
Preferred stock – par value $.10 per share; authorized 1,000,000 shares; none issued	0	0
Common stock – par value $.10 per share; authorized 40,000,000 shares; issued – 20,522,427 shares and 20,373,519 shares, respectively; outstanding – 16,089,832 shares and 15,959,984 shares, respectively	2,052	2,037
Capital in excess of par value	186,518	185,464
Accumulated deficit	(47,832)	(47,598)
Accumulated other comprehensive loss	(1,653)	(1,782)
Treasury stock - at cost; 4,432,595 shares and 4,413,535 shares, respectively	(21,469)	(21,321)
Total Ultralife Corporation equity	117,616	116,800
Non-controlling interest	127	123
Total shareholders’ equity	117,743	116,923
Total liabilities and shareholders' equity	$ 159,538	$ 137,701

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Trade accounts receivable, allowance for doubtful accounts	$ 346	$ 317
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)	20,522,427	20,373,519
Common stock, shares outstanding (in shares)	16,089,832	15,959,984
Treasury stock, shares (in shares)	4,432,595	4,413,535

Consolidated Statements of (Los

Consolidated Statements of (Loss) Income and Comprehensive (Loss) Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Revenues	[1]	$ 98,267	$ 107,712
Cost of products sold		73,625	78,553
Gross profit		24,642	29,159
Operating expenses:
Research and development		6,826	5,947
Selling, general and administrative		17,781	17,511
Total operating expenses		24,607	23,458
Operating income		35	5,701
Other expense (income):
Interest and financing expense		242	436
Miscellaneous income		(56)	(165)
Gain on litigation settlement		0	(1,593)
Total other expense (income)		186	(1,322)
(Loss) income before income taxes		(151)	7,023
Income tax provision		79	1,692
Net (loss) income		(230)	5,331
Net income attributable to non-controlling interest		4	99
Net (loss) income attributable to Ultralife Corporation		(234)	5,232
Other comprehensive income:
Foreign currency translation adjustments		129	749
Comprehensive (loss) income attributable to Ultralife Corporation		$ (105)	$ 5,981
Net (loss) income per share attributable to Ultralife Corporation common shareholders – Basic (in dollars per share)		$ (0.01)	$ 0.33
Net (loss) income per share attributable to Ultralife Corporation common shareholders – Diluted (in dollars per share)		$ (0.01)	$ 0.33
Weighted average shares outstanding – Basic (in shares)		16,037	15,902
Weighted average shares outstanding – Diluted (in shares)		16,037	16,096
[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, 2019	20,268,050
Balance at Dec. 31, 2019	$ 2,026	$ 184,292	$ (2,531)	$ (52,830)	$ (21,231)	$ 24	$ 109,750
Net (loss) income				5,232		99	$ 5,331
Stock option exercises (in shares)	92,968						355,797
Stock option exercises	$ 9	229			(75)		$ 163
Stock-based compensation -stock options		838					838
Stock-based compensation -restricted stock		105					105
Vesting of restricted stock (in shares)	12,501
Vesting of restricted stock	$ 2				(15)		(13)
Foreign currency translation adjustments			749				749
Vesting of restricted stock	$ (2)				15		$ 13
Balance (in shares) at Dec. 31, 2020	20,373,519						15,959,984
Balance at Dec. 31, 2020	$ 2,037	185,464	(1,782)	(47,598)	(21,321)	123	$ 116,923
Net (loss) income				(234)		4	$ (230)
Stock option exercises (in shares)	133,907						204,429
Stock option exercises	$ 13	385			(133)		$ 265
Stock-based compensation -stock options		618					618
Stock-based compensation -restricted stock		53					53
Vesting of restricted stock (in shares)	15,001
Vesting of restricted stock	$ (2)	2			15		15
Foreign currency translation adjustments			129				129
Vesting of restricted stock	$ 2	(2)			(15)		$ (15)
Balance (in shares) at Dec. 31, 2021	20,522,427						16,089,832
Balance at Dec. 31, 2021	$ 2,052	$ 186,518	$ (1,653)	$ (47,832)	$ (21,469)	$ 127	$ 117,743

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
OPERATING ACTIVITIES:
Net (loss) income	$ (230)	$ 5,331
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Depreciation	2,906	2,340
Amortization of intangible assets	633	595
Amortization of financing fees	104	51
Stock-based compensation	671	943
Deferred income tax expense	(147)	1,386
Gain on litigation settlement	0	(1,593)
Changes in operating assets and liabilities:
Accounts receivable	4,423	9,211
Inventories, gross	(1,296)	1,799
Prepaid expenses and other assets	64	(134)
Income taxes receivable and payable	(91)	139
Accounts payable and other liabilities	(2,712)	1,652
Net cash provided by operating activities	4,325	21,720
INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(2,814)	(3,101)
Proceeds from sale of equipment	0	120
Net cash used in investing activities	(26,333)	(2,981)
FINANCING ACTIVITIES:
Proceeds from amended credit facilities	20,980	0
Payment of credit facilities	(1,474)	(15,842)
Proceeds from exercise of stock options	398	238
Tax withholdings on stock-based awards	(148)	(90)
Payment of debt issuance costs	(114)	0
Net cash provided by (used in) financing activities	19,642	(15,694)
Effect of exchange rate changes on cash	126	203
INCREASE (DECREASE) IN CASH	(2,240)	3,248
Cash - Beginning of year	10,653	7,405
Cash - End of year	8,413	10,653
Supplemental cash flow information:
Construction in process in accounts payable	135	675
Income taxes paid	324	264
Interest paid	142	375
UEHC [Member]
INVESTING ACTIVITIES:
Purchase of Excell, net of cash acquired	$ (23,519)	$ 0

Note 1 - Summary of Operations

Note 1 - Summary of Operations and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
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.; Ultralife Excell Holding Corp. (“UEHC”); Ultralife Canada Holding Corp (“UCHC,” wholly owned by UEHC); Excell Battery Canada ULC (wholly owned by UCHC); 1336902 “1336902 1336902 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 and 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), Ultralife Excell Holding Corp. (“UEHC”), Ultralife Canada Holding Corp (“UCHC,” wholly owned by UEHC), Excell Battery Canada ULC (wholly owned by UCHC), 1336902 “1336902 1336902 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 excess and obsolete inventory, deferred tax assets, 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, 2021 2020. 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‑in, first‑out (FIFO) method. We record provisions for excess, obsolete or slow-moving inventory based on changes in customer demand, technology developments or other economic factors. h. Property, Plant and Equipment Property, plant and equipment is stated at cost. Depreciation is 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 5 – 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 our long-lived assets for impairment whenever events or circumstances indicate that their carrying amounts may not no Under the acquisition method of accounting, the purchase price paid, or the total consideration transferred, to consummate the acquisition is allocated to the identified tangible and intangible assets acquired and liabilities assumed based on their respective estimated fair values as of the acquisition date with the residual amount recorded to goodwill. We do not may The annual impairment test for goodwill consists of a comparison of the estimated fair value for each reporting unit to which goodwill is assigned to the carrying value of the respective reporting unit. The annual impairment test for other indefinite-lived intangible assets consists of a comparison of the estimated fair value of each asset to the carrying value of the respective asset. If the estimated fair value of a reporting unit or other indefinite-lived intangible asset exceeds its respective carrying value, the goodwill or indefinite-lived intangible asset is considered not 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 income (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 (loss). 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. For products shipped under vendor managed inventory arrangements, revenue is recognized and billed when the product is consumed by the customer, at which point control has transferred and there are no not Revenues recognized from prior period performance obligations for the years ended December 31, 2021 2020 not As of December 31, 2021 2020, no one 606, Deferred revenue, unbilled revenue and deferred contract costs recorded on our consolidated balance sheets as of December 31, 2021 2020 not l. Warranty Reserves We generally offer standard warranties against product defects. We do not m. Shipping and Handling Costs Costs incurred by us related to shipping and handling are included in cost of products sold. Amounts charged to customers pertaining to these costs are reflected as revenue. n. Sales Commissions Sales commissions are expensed as incurred for contracts with an expected duration of one no December 31, 2021 2020. 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, 2021 2020, 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 One of our customers, a large defense primary contractor, comprised 20% and 17% of our total consolidated revenues for 2021 2020, 2021 2020, no 10% 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, 2021 2020. t. Earnings Per Share Basic earnings per share (“EPS”) is computed by dividing net income (loss) 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, 2021, no not December 31, 2021, December 31, 2020, not December 31, 2020, u. Stock-Based Compensation We have various stock-based employee compensation plans that are described more fully in Note 6. v. Segment Reporting We have two w. Business Combinations We allocate the purchase price of acquired businesses to the tangible and intangible assets acquired and the liabilities assumed based on their estimated fair values on the acquisition date. Any excess of the purchase price over the net fair value of the separately identifiable assets acquired and liabilities assumed is allocated to goodwill. Management determines the fair values of identifiable intangible assets acquired based on historical data, estimated discounted future cash flows, expected royalty rates for trademarks and trade names, as well as certain other information. The valuation of assets acquired and liabilities assumed requires a number of judgments and is subject to change as additional information about the fair value of assets and liabilities becomes available. Additional information, which existed as of the acquisition date but unknown to us at that time, may may not twelve x. Leases 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 8 y. Recent Accounting Pronouncements Recently Adopted Accounting Guidance Effective January 1, 2021, 2019 12, 740 2019 12 740 not Recent Accounting Guidance Not In June 2016, 2016 13, 326 December 15, 2022.

Note 2 - Acquisition

Note 2 - Acquisition	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Business Combination Disclosure [Text Block]	Note 2 Acquisition On December 13, 2021, On December 13, 2021, 1336889 1336902 656700 Based in Canada with U.S. operations, Excell is a leading independent designer and manufacturer of high-performance smart battery systems, battery packs and monitoring systems to customer specifications. Excell serves a variety of industrial markets including downhole drilling, OEM industrial and medical devices, automated meter reading, ruggedized computers, and mining, marine and other mission critical applications which demand uncompromised safety, service, reliability and quality. The Excell Canada Acquisition was completed pursuant to a Share Purchase Agreement dated December 13, 2021 ( 1336889 0835205 December 13, 2021 ( 1336902 0835205 656700 The Excell Acquisition was funded by the Company through a combination of cash on hand and borrowings under the Amended Credit Facilities (Note 3 The Excell Acquisition was accounted for in accordance with the accounting treatment of a business combination pursuant to FASB ASC Topic 805, 805” value of the separately identifiable assets acquired and liabilities assumed was allocated to goodwill. Management is responsible for determining the acquisition date fair value of the assets acquired and liabilities assumed, which requires the use of various assumptions and judgments that are inherently subjective. The purchase price allocation presented below reflects all known information about the fair value of the assets acquired and liabilities assumed as of the acquisition date. The purchase price allocation is subject to change should additional information existing as of the acquisition date about the fair value of the assets acquired and liabilities assumed become known. The final purchase price allocation may not Cash $ 736 Accounts receivable 3,570 Inventories 3,622 Prepaid expenses and other current assets 785 Property, plant and equipment 429 Goodwill 11,019 Other intangible assets 8,830 Other noncurrent assets 991 Accounts payable (1,450 ) Accrued compensation and related benefits (540 ) Accrued expenses and other current liabilities (720 ) Deferred tax liability, net (2,213 ) Other noncurrent liabilities (803 ) Net assets acquired $ 24,256 The goodwill included in the Company’s purchase price allocation presented above represents the value of Excell’s assembled and trained workforce, the incremental value that Excell 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 Other intangible assets were valued using the income approach which requires a forecast of all expected future cash flows and the use of certain assumptions and estimates. The following table summarizes the estimated fair value and annual amortization for each of the identifiable intangible assets acquired. Annual Amortization Estimated Fair Value Amortization Period (Years) Year 1 Year 2 Year 3 Year 4 Year 5 Customer relationships $ 4,070 15 $ 271 $ 271 $ 271 $ 271 $ 271 Trade name 3,150 Indefinite - - - - - Customer contracts 1,130 15 75 75 75 75 75 Backlog 360 1 360 - - - - Technology 120 7 17 17 17 17 17 Total $ 8,830 $ 724 $ 364 $ 364 $ 364 $ 364 We acquired right-of-use assets and assumed lease liabilities of $960 for Excell’s operating facilities. Right-of-use assets are classified as other noncurrent assets, and current and long-term lease liabilities are classified as accrued expenses and other current liabilities and other noncurrent liabilities, respectively, on the Company’s consolidated balance sheet. The operating results and cash flows of Excell are reflected in the Company’s consolidated financial statements from the date of acquisition. Excell is included in the Battery & Energy Products segment. For the year ended December 31, 2021, December 13, 2021 not December 23, 2021 December 31, 2021 During the year ended December 31, 2021, one The following supplemental pro forma information presents the combined results of operations, inclusive of the acquisition accounting adjustments and one January 1, 2020, The supplemental pro forma results do not not not Set forth below are the unaudited supplemental pro forma results of the Company and Excell for the years ended December 31, 2021 2020 January 1, 2020. Year Ended December 31, 2021 2020 Revenue $ 118,467 $ 125,826 Operating income 1,450 4,489 Net Income attributable to Ultralife Corporation 1,367 4,081 Net income per share attributable to Ultralife Corporation: Basic $ .09 $ .26 Diluted $ .08 $ .25 The historical results of Excell reflected in the unaudited supplemental pro forma results for the year ended December 31, 2020 January 2020.

Note 3 - Debt

Note 3 - Debt	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 3 Debt Credit Facilities On December 13, 2021, May 31, 2017 May 1, 2019 ( The Amended Credit Agreement, among other things, provides for a 5 May 30, 2025. six May 30, 2025, may Upon closing of the Excell Acquisition on December 13, 2021, December 31, 2021, December 31, 2021, The remaining availability under the Revolving Credit Facility is subject to certain borrowing base limits based on trade receivables and inventories. The Company is required to repay the borrowings under the Term Loan Facility in equal consecutive monthly payments commencing on February 1, 2022, January 1, 2027. May 30, 2025. may In addition to the customary affirmative and negative covenants, the Company must maintain a consolidated senior leverage ratio, as defined in the Amended Credit Agreement, of equal to or less than 3.5 to 1.0 December 31, 2022 March 31, 2023, 1.0 June 30, 2023 Borrowings under the Amended Credit Facilities are secured by substantially all the assets of the Company and its subsidiaries. Interest will accrue on outstanding indebtedness under the Amended 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 basis points, and (c) the Overnight LIBOR Rate plus one hundred zero The Company must pay a fee of 0.15% to 0.25% based on the average daily unused availability under the Revolving Credit Facility. Payments must be made by the Company to the extent borrowings exceed the maximum amount then permitted to be drawn on the Amended Credit Facilities and from the proceeds of certain transactions. Upon the occurrence of an event of default, the outstanding obligations may

Note 4 - Supplemental Balance S

Note 4 - Supplemental Balance Sheet Information	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Supplemental Balance Sheet Disclosures [Text Block]	Note 4 a. Cash and Restricted Cash The Company had cash and restricted cash totaling $8,413 and $10,653 as of December 31, 2021 2020, December 31, 2021 2020 Cash $ 8,329 $ 10,562 Restricted cash 84 91 Total $ 8,413 $ 10,653 As of December 31, 2021 December 31, 2020, 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, 2021 2020 Raw materials $ 21,660 $ 17,277 Work in process 4,227 3,411 Finished products 7,302 7,505 Total $ 33,189 $ 28,193 c. Property, Plant and Equipment Major classes of property, plant and equipment consisted of the following: December 31, 2021 2020 Land $ 1,273 $ 1,273 Buildings and leasehold improvements 15,442 15,393 Machinery and equipment 63,780 61,048 Furniture and fixtures 2,588 2,235 Computer hardware and software 7,579 6,894 Construction in progress 761 1,227 91,423 88,070 Less – Accumulated depreciation (68,218 ) (65,220 ) Total $ 23,205 $ 22,850 Depreciation expense was $2,906 and $2,340 for the years ended December 31, 2021 2020, d. Goodwill and Other Intangible Assets The Company conducted its annual impairment test for goodwill and other indefinite-lived intangible assets as of October 1, 2021. four December 31, 2021, The following table summarizes the goodwill activity by segment for the years ended December 31, 2021 2020: Battery & Energy Products Communications Systems Total Balance – January 1, 2021 $ 15,525 $ 11,493 $ 27,018 Acquisition of Excell 11,019 - 11,019 Effect of foreign currency translation 31 - 31 Balance – December 31, 2021 $ 26,575 $ 11,493 $ 38,068 The composition of intangible assets was: December 31, 2021, Cost Accumulated amortization Net Customer relationships $ 13,214 $ 5,484 $ 7,730 Patents and technology 5,667 5,126 541 Trade names 4,670 436 4,234 Trademarks 3,413 - 3,413 Other 1,490 18 1,472 Total other intangible assets $ 28,454 $ 11,064 $ 17,390 December 31, 2020, Cost Accumulated amortization Net Customer relationships $ 9,171 $ 5,115 $ 4,056 Patents and technology 5,557 5,014 543 Trade name 1,524 324 1,200 Trademarks 3,410 - 3,410 Total other intangible assets $ 19,662 $ 10,453 $ 9,209 The change in the cost value of other intangible assets is a result of the Excell Acquisition (Note 2 Amortization of other intangible assets was included in the following financial statement captions: Year ended December 31, 2021 2020 Research and development expense $ 118 $ 124 Selling, general and administrative expense 515 471 Total $ 633 $ 595 Future amortization expense of amortizable intangible assets will be approximately $1,286, $938, $927, $927 and $783 for the five December 31, 2022 2026,

Note 5 - Commitments and Contin

Note 5 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 5 a. Legal Matters We are subject to legal proceedings and claims that arise from time to time in the ordinary course of business. We believe that the final disposition of any such matters of which we are currently aware will not not On December 14, 2020, 13 02420 no December 31, 2020. January 2021. b. 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. c. Purchase Commitments As of December 31, 2021, d. China Our operating facility in China presents risks including, but not 9 e. Employment Contracts We have an employment contract with Michael D. Popielec, our President and Chief Executive Officer, which remains in effect until terminated by either party. This agreement provides for a base salary, as adjusted for increases at the discretion of our Board of Directors, and includes incentive bonuses based upon attainment of specified quantitative and qualitative performance goals. This agreement also provides for severance payments in the event of specified events of termination of employment. In addition, this agreement provides for a lump sum payment in the event of termination of employment in connection with a change in control. As part of our employment commencement process, employees are required to enter into agreements providing for confidentiality of certain information and the assignment of rights to inventions made by them while employed by us. These agreements also contain certain non-competition and non-solicitation provisions effective during the employment term and for varying periods thereafter depending on position and location. There can be no f. Product Warranties We estimate future warranty costs to be incurred for product failure rates, material usage and service costs in the development of our warranty obligations. Estimated future costs are based on actual past experience and are generally estimated as a percentage of sales over the warranty period. Changes in our product warranty liability during the years ended December 31, 2021 2020 2021 2020 Balance, January 1 $ 149 $ 195 Provision for warranties issued 142 200 Settlements made (158 ) (246 ) Balance, December 31 $ 133 $ 149

Note 6 - Shareholders' Equity

Note 6 - Shareholders' Equity	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Shareholders' Equity and Share-based Payments [Text Block]	Note 6 We recorded non-cash stock compensation expense in each period as follows: Year ended December 31, 2021 2020 Stock options $ 618 $ 838 Restricted stock 53 105 Total $ 671 $ 943 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 2006, 2008, 2011, 2013, 2004 In June 2014, 2014 “2014 2004 June 10, 2014. 2014 July 2021, 2014 2014 2014 no 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. Stock options vest over a three seventh December 31, 2021, 2014 no 2004 As of December 31, 2021, 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, 2021 2020: Year ended December 31, 2021 2020 Risk-free interest rate 1.0 % 0.4 % Volatility factor 50 % 49 % Weighted average expected life (years) 4.8 5.3 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, 2021 2020. We calculate expected volatility for stock options by taking an average of historical volatility over the expected term. The computation of expected term was determined based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards and vesting schedules. The interest rate for periods within the contractual life of the award is based on the U.S. Treasury yield in effect at the time of grant. Forfeiture rates are calculated by dividing unvested shares forfeited by beginning shares outstanding. The pre-vesting forfeiture rate is calculated yearly and is determined using a historical twelve The following tables summarize data for the stock options issued by us: Year ended December 31, 2021 Number of shares Weighted average exercise price per share Weighted average remaining contractual term Aggregate intrinsic value Shares under option – January 1 1,217,163 $ 6.50 Options granted 340,500 6.78 Options exercised (204,429 ) 4.39 Options forfeited or expired (46,410 ) 7.44 Shares under option – December 31 1,306,824 $ 6.87 4.22 $ 504 Vested and expected to vest - December 31 1,189,175 $ 6.86 4.05 $ 492 Options exercisable – December 31 745,288 $ 6.85 2.80 $ 439 Year ended December 31, 2020 Number of shares Weighted average exercise price per share Shares under option – January 1 1,541,792 $ 6.88 Options granted 256,000 6.51 Options exercised (355,797 ) 6.08 Options forfeited or expired (224,832 ) 9.76 Shares under option – December 31 1,217,163 $ 6.50 Options exercisable – December 31 738,452 $ 5.82 The following table represents additional information about stock options outstanding at December 31, 2021: 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 $3.71 - $5.31 325,579 2.68 $ 4.58 240,579 $ 4.34 $5.71 - $6.51 321,411 4.36 6.28 166,602 6.07 $6.69 - $7.16 205,750 6.45 6.97 11,667 7.09 $8.25 - $9.96 454,084 4.22 8.88 326,440 9.08 $3.71 - $9.96 1,306,824 4.22 $ 6.87 745,288 $ 6.85 The weighted average fair value of options granted during the years ended December 31, 2021 2020 December 31, 2021 2020 Cash received from stock option exercises under our stock-based compensation plans for the years ended December 31, 2021 2020 Restricted shares vest in equal annual installments over three December 31, 2021, There were 941,986 shares of common stock available for future issuance under equity compensation plans as of December 31, 2021.

Note 7 - Income Taxes

Note 7 - Income Taxes	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 7 For the years ended December 31, 2021 2020, Year ended December 31, 2021 2020 Current: State $ 16 $ 23 Foreign 210 283 226 306 Deferred: Federal (158 ) 1,673 Foreign 11 (287 ) (147 ) 1,386 Total income tax provision $ 79 $ 1,692 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, 2021 2020 Deferred tax assets: Net operating loss carryforwards $ 12,567 $ 12,481 Tax credit carryforwards 2,239 2,070 Intangible assets 1,412 1,352 Accrued expenses, reserves and other 1,996 2,176 Research and development 1,999 984 Total deferred tax assets 20,213 19,063 Valuation allowance for deferred tax assets (2,697 ) (1,942 ) Net deferred tax assets 17,516 17,121 Deferred tax liabilities: Property, plant and equipment (79 ) (262 ) Intangible assets (8,219 ) (5,538 ) Total deferred tax liabilities (8,298 ) (5,800 ) Net deferred tax assets $ 9,218 $ 11,321 Net deferred tax assets (liabilities) are comprised of the following balance sheet amounts: December 31, 2021 2020 Deferred tax assets $ 11,472 $ 11,836 Deferred tax liabilities (2,254 ) (515 ) $ 9,218 $ 11,321 For financial reporting purposes, net (loss) income from continuing operations before income taxes is as follows: Year ended December 31, 2021 2020 United States $ (704 ) $ 6,586 Foreign 553 437 $ (151 ) $ 7,023 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, 2021 2020 Statutory income tax rate 21 % 21 % Increase (decrease) in tax provision resulting from: Equity compensation 11.6 4.5 Acquisition-related costs (34.7 ) Income tax credits 72.7 (2.3 ) Foreign tax rate change (89.7 ) - Foreign tax rates (15.5 ) 0.1 States taxes (10.8 ) 0.3 Other (7.0 ) 0.5 Effective income tax rate (52.4 )% 24.1 % As of December 31, 2021, not 2015 2022 2037, 2028 2039. December 31, 2021, As of December 31, 2021, may no As of December 31, 2021, not There were no unrecognized tax benefits related to uncertain tax positions at December 31, 2021 2020. As of December 31, 2021, 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. In August 2020, 2016 2018 no 2020 2019 2002, 2005 2007 2011 2015 2002, 2005 2007 2011 2020 2011 2020

Note 8 - Operating Leases

Note 8 - Operating Leases	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	Note 8 Operating Leases The Company has operating leases predominantly for operating facilities. As of December 31, 2021, one ten no no The components of lease expense for the current and prior-year comparative periods were as follows: Year ended December 31, 2021 2020 Operating lease cost $ 762 $ 703 Variable lease cost 79 75 Total lease cost $ 841 $ 778 Supplemental cash flow information related to leases was as follows: Year ended December 31, 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 744 $ 688 Right-of-use assets obtained in exchange for lease liabilities: $ 1,020 $ 875 Supplemental balance sheet information related to leases was as follows: December 31, Balance Sheet Classification 2021 2020 Assets: Operating lease right-of-use asset Other noncurrent assets $ 2,581 $ 2,189 Liabilities: Current operating lease liability Accrued expenses and other current liabilities $ 867 $ 680 Operating lease liability, net of current portion Other noncurrent liabilities 1,743 1,524 Total operating lease liability $ 2,610 $ 2,204 Weighted-average remaining lease term (years) 4.5 3.3 Weighted-average discount rate 4.5 % 4.5 % Future minimum lease payments as of December 31, 2021 Maturity of Operating Lease Liabilities 2022 $ 889 2023 894 2024 434 2025 139 2026 140 Thereafter 424 Total lease payments $ 2,920 Less: Imputed interest (310 ) Present value of remaining lease payments $ 2,610

Note 9 - 401(k) Retirement Bene

Note 9 - 401(k) Retirement Benefit Plan	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Retirement Benefits [Text Block]	Note 9 401 We maintain a defined contribution 401 401 may, December 31, 2021, first December 31, 2020, first 2021 2020, 401

Note 10 - Business Segment Info

Note 10 - Business Segment Information	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 10 We report our results in two operating segments: Battery & Energy Products and Communications Systems. The Battery & Energy Products segment includes: Lithium 9 2021: Battery & Energy Products Communications Systems Corporate Total Revenue $ 87,083 $ 11,184 $ - $ 98,267 Segment contribution 21,063 3,579 (24,607 ) 35 Other expense 186 186 Income tax expense 79 79 Non-controlling interest 4 4 Net loss attributable to Ultralife $ (234 ) Total assets $ 110,633 $ 25,359 $ 23,546 159,538 Capital expenditures $ 2,104 $ 255 $ 455 $ 2,814 Goodwill $ 26,575 $ 11,493 - $ 38,068 Depreciation and amortization of intangible assets $ 2,847 $ 326 $ 366 $ 3,539 Stock-based compensation $ 298 $ 125 $ 248 $ 671 2020: Battery & Energy Products Communications Systems Corporate Total Revenue $ 91,907 $ 15,805 $ - $ 107,712 Segment contribution 23,400 5,759 (23,458 ) 5,701 Other income (1,322 ) (1,322 ) Income tax expense 1,692 1,692 Non-controlling interest 99 99 Net income attributable to Ultralife $ 5,232 Total assets $ 85,112 $ 26,425 $ 26,164 $ 137,701 Capital expenditures $ 3,031 $ - $ 70 $ 3,101 Goodwill $ 15,525 $ 11,493 - $ 27,018 Depreciation and amortization of intangible assets $ 2,269 $ 342 $ 324 $ 2,935 Stock-based compensation $ 446 $ 155 $ 342 $ 943 Long-lived assets (comprised of property, plant and equipment; goodwill; and other intangible assets) held outside the U.S., principally in Canada, United Kingdom and China, were $26,762 and $12,456 as of December 31, 2021 2020, The following tables disaggregate our business segment revenues by major source and geography. Commercial and Government/Defense Revenue Information: Year ended December 31, 2021: Total Revenue Commercial Government/ Defense Battery & Energy Products $ 87,083 $ 64,079 $ 23,004 Communications Systems 11,184 - 11,184 Total $ 98,267 $ 64,079 $ 34,188 65 % 35 % Year ended December 31, 2020: Total Revenue Commercial Government/ Defense Battery & Energy Products $ 91,907 $ 62,330 $ 29,577 Communications Systems 15,805 - 15,805 Total $ 107,712 $ 62,330 $ 45,382 58 % 42 % U.S. and Non-U.S. Revenue Information 1 : Year ended December 31, 2021: Total Revenue United States Non-United States Battery & Energy Products $ 87,083 $ 43,298 $ 43,785 Communications Systems 11,184 5,521 5,663 Total $ 98,267 $ 48,819 $ 49,448 50 % 50 % Year ended December 31, 2020: Total Revenue United States Non-United States Battery & Energy Products $ 91,907 $ 49,930 $ 41,977 Communications Systems 15,805 12,325 3,480 Total $ 107,712 $ 62,255 $ 45,457 58 % 42 % 1 may

Note 11 - Impact of COVID-19

Note 11 - Impact of COVID-19	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Effect of Covid-19 Pandemic [Text Block]	Note 11 Impact of COVID- 19 The COVID- 19 19 first COVID- 19 2021 2021 2020, 2022. The extent to which COVID- 19 may 19 19 may

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
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 and 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), Ultralife Excell Holding Corp. (“UEHC”), Ultralife Canada Holding Corp (“UCHC,” wholly owned by UEHC), Excell Battery Canada ULC (wholly owned by UCHC), 1336902 “1336902 1336902
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 excess and obsolete inventory, deferred tax assets, 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, Comparability Adjustment [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, 2021 2020.
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‑in, first‑out (FIFO) method. We record provisions for excess, obsolete or slow-moving inventory based on changes in customer demand, technology developments or other economic factors.
Property, Plant and Equipment, Policy [Policy Text Block]	h. Property, Plant and Equipment Property, plant and equipment is stated at cost. Depreciation is 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 5 – 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 our long-lived assets for impairment whenever events or circumstances indicate that their carrying amounts may not no Under the acquisition method of accounting, the purchase price paid, or the total consideration transferred, to consummate the acquisition is allocated to the identified tangible and intangible assets acquired and liabilities assumed based on their respective estimated fair values as of the acquisition date with the residual amount recorded to goodwill. We do not may The annual impairment test for goodwill consists of a comparison of the estimated fair value for each reporting unit to which goodwill is assigned to the carrying value of the respective reporting unit. The annual impairment test for other indefinite-lived intangible assets consists of a comparison of the estimated fair value of each asset to the carrying value of the respective asset. If the estimated fair value of a reporting unit or other indefinite-lived intangible asset exceeds its respective carrying value, the goodwill or indefinite-lived intangible asset is considered not
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 income (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 (loss).
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. For products shipped under vendor managed inventory arrangements, revenue is recognized and billed when the product is consumed by the customer, at which point control has transferred and there are no not Revenues recognized from prior period performance obligations for the years ended December 31, 2021 2020 not As of December 31, 2021 2020, no one 606, Deferred revenue, unbilled revenue and deferred contract costs recorded on our consolidated balance sheets as of December 31, 2021 2020 not
Guarantees, Indemnifications and Warranties Policies [Policy Text Block]	l. Warranty Reserves We generally offer standard warranties against product defects. We do not
Shipping and Handling Costs [Policy Text Block]	m. Shipping and Handling Costs Costs incurred by us related to shipping and handling are included in cost of products sold. Amounts charged to customers pertaining to these costs are reflected as revenue.
Sales Commissions [Policy Text Block]	n. Sales Commissions Sales commissions are expensed as incurred for contracts with an expected duration of one no December 31, 2021 2020.
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, 2021 2020,
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 One of our customers, a large defense primary contractor, comprised 20% and 17% of our total consolidated revenues for 2021 2020, 2021 2020, no 10%
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, 2021 2020.
Earnings Per Share, Policy [Policy Text Block]	t. Earnings Per Share Basic earnings per share (“EPS”) is computed by dividing net income (loss) 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, 2021, no not December 31, 2021, December 31, 2020, not December 31, 2020,
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 6.
Segment Reporting, Policy [Policy Text Block]	v. Segment Reporting We have two
Business Combinations Policy [Policy Text Block]	w. Business Combinations We allocate the purchase price of acquired businesses to the tangible and intangible assets acquired and the liabilities assumed based on their estimated fair values on the acquisition date. Any excess of the purchase price over the net fair value of the separately identifiable assets acquired and liabilities assumed is allocated to goodwill. Management determines the fair values of identifiable intangible assets acquired based on historical data, estimated discounted future cash flows, expected royalty rates for trademarks and trade names, as well as certain other information. The valuation of assets acquired and liabilities assumed requires a number of judgments and is subject to change as additional information about the fair value of assets and liabilities becomes available. Additional information, which existed as of the acquisition date but unknown to us at that time, may may not twelve
Lessee, Leases [Policy Text Block]	x. Leases 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 8
New Accounting Pronouncements, Policy [Policy Text Block]	y. Recent Accounting Pronouncements Recently Adopted Accounting Guidance Effective January 1, 2021, 2019 12, 740 2019 12 740 not Recent Accounting Guidance Not In June 2016, 2016 13, 326 December 15, 2022.

Note 1 - Summary of Operation_2

Note 1 - Summary of Operations and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Property, Plant and Equipment, Estimated Useful Life [Table Text Block]	Buildings 10 – 40 Machinery and Equipment 5 – 10 Furniture and Fixtures 5 – 10 Computer Hardware and Software 3 – 5 Leasehold Improvements Lesser of useful life or lease term

Note 2 - Acquisition (Tables)

Note 2 - Acquisition (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Cash $ 736 Accounts receivable 3,570 Inventories 3,622 Prepaid expenses and other current assets 785 Property, plant and equipment 429 Goodwill 11,019 Other intangible assets 8,830 Other noncurrent assets 991 Accounts payable (1,450 ) Accrued compensation and related benefits (540 ) Accrued expenses and other current liabilities (720 ) Deferred tax liability, net (2,213 ) Other noncurrent liabilities (803 ) Net assets acquired $ 24,256
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]	Annual Amortization Estimated Fair Value Amortization Period (Years) Year 1 Year 2 Year 3 Year 4 Year 5 Customer relationships $ 4,070 15 $ 271 $ 271 $ 271 $ 271 $ 271 Trade name 3,150 Indefinite - - - - - Customer contracts 1,130 15 75 75 75 75 75 Backlog 360 1 360 - - - - Technology 120 7 17 17 17 17 17 Total $ 8,830 $ 724 $ 364 $ 364 $ 364 $ 364
Business Acquisition, Pro Forma Information [Table Text Block]	Year Ended December 31, 2021 2020 Revenue $ 118,467 $ 125,826 Operating income 1,450 4,489 Net Income attributable to Ultralife Corporation 1,367 4,081 Net income per share attributable to Ultralife Corporation: Basic $ .09 $ .26 Diluted $ .08 $ .25

Note 4 - Supplemental Balance_2

Note 4 - Supplemental Balance Sheet Information (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Cash, Cash Equivalents and Investments [Table Text Block]	December 31, 2021 2020 Cash $ 8,329 $ 10,562 Restricted cash 84 91 Total $ 8,413 $ 10,653
Schedule of Inventory, Current [Table Text Block]	December 31, 2021 2020 Raw materials $ 21,660 $ 17,277 Work in process 4,227 3,411 Finished products 7,302 7,505 Total $ 33,189 $ 28,193
Property, Plant and Equipment [Table Text Block]	December 31, 2021 2020 Land $ 1,273 $ 1,273 Buildings and leasehold improvements 15,442 15,393 Machinery and equipment 63,780 61,048 Furniture and fixtures 2,588 2,235 Computer hardware and software 7,579 6,894 Construction in progress 761 1,227 91,423 88,070 Less – Accumulated depreciation (68,218 ) (65,220 ) Total $ 23,205 $ 22,850
Schedule of Goodwill [Table Text Block]	Battery & Energy Products Communications Systems Total Balance – January 1, 2021 $ 15,525 $ 11,493 $ 27,018 Acquisition of Excell 11,019 - 11,019 Effect of foreign currency translation 31 - 31 Balance – December 31, 2021 $ 26,575 $ 11,493 $ 38,068
Schedule of Finite-Lived Intangible Assets [Table Text Block]	December 31, 2021, Cost Accumulated amortization Net Customer relationships $ 13,214 $ 5,484 $ 7,730 Patents and technology 5,667 5,126 541 Trade names 4,670 436 4,234 Trademarks 3,413 - 3,413 Other 1,490 18 1,472 Total other intangible assets $ 28,454 $ 11,064 $ 17,390 December 31, 2020, Cost Accumulated amortization Net Customer relationships $ 9,171 $ 5,115 $ 4,056 Patents and technology 5,557 5,014 543 Trade name 1,524 324 1,200 Trademarks 3,410 - 3,410 Total other intangible assets $ 19,662 $ 10,453 $ 9,209
Finite-lived Intangible Assets Amortization Expense [Table Text Block]	Year ended December 31, 2021 2020 Research and development expense $ 118 $ 124 Selling, general and administrative expense 515 471 Total $ 633 $ 595

Note 5 - Commitments and Cont_2

Note 5 - Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Product Warranty Liability [Table Text Block]	2021 2020 Balance, January 1 $ 149 $ 195 Provision for warranties issued 142 200 Settlements made (158 ) (246 ) Balance, December 31 $ 133 $ 149

Note 6 - Shareholders' Equity (

Note 6 - Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]	Year ended December 31, 2021 2020 Stock options $ 618 $ 838 Restricted stock 53 105 Total $ 671 $ 943
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Year ended December 31, 2021 2020 Risk-free interest rate 1.0 % 0.4 % Volatility factor 50 % 49 % Weighted average expected life (years) 4.8 5.3 Forfeiture rate 10.0 % 10.0 % Dividends 0.0 % 0.0 %
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Year ended December 31, 2021 Number of shares Weighted average exercise price per share Weighted average remaining contractual term Aggregate intrinsic value Shares under option – January 1 1,217,163 $ 6.50 Options granted 340,500 6.78 Options exercised (204,429 ) 4.39 Options forfeited or expired (46,410 ) 7.44 Shares under option – December 31 1,306,824 $ 6.87 4.22 $ 504 Vested and expected to vest - December 31 1,189,175 $ 6.86 4.05 $ 492 Options exercisable – December 31 745,288 $ 6.85 2.80 $ 439 Year ended December 31, 2020 Number of shares Weighted average exercise price per share Shares under option – January 1 1,541,792 $ 6.88 Options granted 256,000 6.51 Options exercised (355,797 ) 6.08 Options forfeited or expired (224,832 ) 9.76 Shares under option – December 31 1,217,163 $ 6.50 Options exercisable – December 31 738,452 $ 5.82
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 $3.71 - $5.31 325,579 2.68 $ 4.58 240,579 $ 4.34 $5.71 - $6.51 321,411 4.36 6.28 166,602 6.07 $6.69 - $7.16 205,750 6.45 6.97 11,667 7.09 $8.25 - $9.96 454,084 4.22 8.88 326,440 9.08 $3.71 - $9.96 1,306,824 4.22 $ 6.87 745,288 $ 6.85

Note 7 - Income Taxes (Tables)

Note 7 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Year ended December 31, 2021 2020 Current: State $ 16 $ 23 Foreign 210 283 226 306 Deferred: Federal (158 ) 1,673 Foreign 11 (287 ) (147 ) 1,386 Total income tax provision $ 79 $ 1,692
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31, 2021 2020 Deferred tax assets: Net operating loss carryforwards $ 12,567 $ 12,481 Tax credit carryforwards 2,239 2,070 Intangible assets 1,412 1,352 Accrued expenses, reserves and other 1,996 2,176 Research and development 1,999 984 Total deferred tax assets 20,213 19,063 Valuation allowance for deferred tax assets (2,697 ) (1,942 ) Net deferred tax assets 17,516 17,121 Deferred tax liabilities: Property, plant and equipment (79 ) (262 ) Intangible assets (8,219 ) (5,538 ) Total deferred tax liabilities (8,298 ) (5,800 ) Net deferred tax assets $ 9,218 $ 11,321
Schedule of Net Deferred Tax Liabilities [Table Text Block]	December 31, 2021 2020 Deferred tax assets $ 11,472 $ 11,836 Deferred tax liabilities (2,254 ) (515 ) $ 9,218 $ 11,321
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	Year ended December 31, 2021 2020 United States $ (704 ) $ 6,586 Foreign 553 437 $ (151 ) $ 7,023
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Year ended December 31, 2021 2020 Statutory income tax rate 21 % 21 % Increase (decrease) in tax provision resulting from: Equity compensation 11.6 4.5 Acquisition-related costs (34.7 ) Income tax credits 72.7 (2.3 ) Foreign tax rate change (89.7 ) - Foreign tax rates (15.5 ) 0.1 States taxes (10.8 ) 0.3 Other (7.0 ) 0.5 Effective income tax rate (52.4 )% 24.1 %

Note 8 - Operating Leases (Tabl

Note 8 - Operating Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Lease, Cost [Table Text Block]	Year ended December 31, 2021 2020 Operating lease cost $ 762 $ 703 Variable lease cost 79 75 Total lease cost $ 841 $ 778
Lessee, Lease, Cash Flow Information [Table Text Block]	Year ended December 31, 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 744 $ 688 Right-of-use assets obtained in exchange for lease liabilities: $ 1,020 $ 875
Lessee, Lease, Balance Sheet Information [Table Text Block]	December 31, Balance Sheet Classification 2021 2020 Assets: Operating lease right-of-use asset Other noncurrent assets $ 2,581 $ 2,189 Liabilities: Current operating lease liability Accrued expenses and other current liabilities $ 867 $ 680 Operating lease liability, net of current portion Other noncurrent liabilities 1,743 1,524 Total operating lease liability $ 2,610 $ 2,204 Weighted-average remaining lease term (years) 4.5 3.3 Weighted-average discount rate 4.5 % 4.5 %
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Maturity of Operating Lease Liabilities 2022 $ 889 2023 894 2024 434 2025 139 2026 140 Thereafter 424 Total lease payments $ 2,920 Less: Imputed interest (310 ) Present value of remaining lease payments $ 2,610

Note 10 - Business Segment In_2

Note 10 - Business Segment Information (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Battery & Energy Products Communications Systems Corporate Total Revenue $ 87,083 $ 11,184 $ - $ 98,267 Segment contribution 21,063 3,579 (24,607 ) 35 Other expense 186 186 Income tax expense 79 79 Non-controlling interest 4 4 Net loss attributable to Ultralife $ (234 ) Total assets $ 110,633 $ 25,359 $ 23,546 159,538 Capital expenditures $ 2,104 $ 255 $ 455 $ 2,814 Goodwill $ 26,575 $ 11,493 - $ 38,068 Depreciation and amortization of intangible assets $ 2,847 $ 326 $ 366 $ 3,539 Stock-based compensation $ 298 $ 125 $ 248 $ 671 Battery & Energy Products Communications Systems Corporate Total Revenue $ 91,907 $ 15,805 $ - $ 107,712 Segment contribution 23,400 5,759 (23,458 ) 5,701 Other income (1,322 ) (1,322 ) Income tax expense 1,692 1,692 Non-controlling interest 99 99 Net income attributable to Ultralife $ 5,232 Total assets $ 85,112 $ 26,425 $ 26,164 $ 137,701 Capital expenditures $ 3,031 $ - $ 70 $ 3,101 Goodwill $ 15,525 $ 11,493 - $ 27,018 Depreciation and amortization of intangible assets $ 2,269 $ 342 $ 324 $ 2,935 Stock-based compensation $ 446 $ 155 $ 342 $ 943
Schedule of Revenues from External Customers by Business Segment Sector [Table Text Block]	Total Revenue Commercial Government/ Defense Battery & Energy Products $ 87,083 $ 64,079 $ 23,004 Communications Systems 11,184 - 11,184 Total $ 98,267 $ 64,079 $ 34,188 65 % 35 % Total Revenue Commercial Government/ Defense Battery & Energy Products $ 91,907 $ 62,330 $ 29,577 Communications Systems 15,805 - 15,805 Total $ 107,712 $ 62,330 $ 45,382 58 % 42 %
Revenue from External Customers by Geographic Areas [Table Text Block]	Total Revenue United States Non-United States Battery & Energy Products $ 87,083 $ 43,298 $ 43,785 Communications Systems 11,184 5,521 5,663 Total $ 98,267 $ 48,819 $ 49,448 50 % 50 % Total Revenue United States Non-United States Battery & Energy Products $ 91,907 $ 49,930 $ 41,977 Communications Systems 15,805 12,325 3,480 Total $ 107,712 $ 62,255 $ 45,457 58 % 42 %

Note 1 - Summary of Operation_3

Note 1 - Summary of Operations and Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Research and Development Expense, Gross	$ 8,042	$ 7,316
Customer Funded Research and Development Expense Included in Cost of Goods Sold	$ 1,216	$ 1,369
Weighted Average Number Diluted Shares Outstanding Adjustment, Total (in shares)		193,568
Restricted Stock [Member]
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total (in shares)	0	26,665
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	11,664
Share-based Payment Arrangement, Option [Member]
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total (in shares)	0	526,244
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	1,306,824	690,919
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Large Defense Primary Contractor, 1 [Member]
Concentration Risk, Percentage	20.00%	17.00%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Large Defense Primary Contractor, 1 [Member] | Battery & Energy Products Segment [Member]
Concentration Risk, Percentage	22.00%
Customer Concentration Risk [Member] | Revenue, Segment Benchmark [Member] | Two Customers [Member] | Battery & Energy Products Segment [Member]
Concentration Risk, Percentage		20.00%

Note 1 - Summary of Operation_4

Note 1 - Summary of Operations and Significant Accounting Policies - Property, Plant and Equipment Estimated Useful Life (Details)	12 Months Ended
	Dec. 31, 2021
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)	5 years
Furniture and Fixtures [Member] | Maximum [Member]
Estimated useful lives (Year)	10 years
Computer Equipment [Member] | Minimum [Member]
Estimated useful lives (Year)	3 years
Computer Equipment [Member] | Maximum [Member]
Estimated useful lives (Year)	5 years
Leasehold Improvements [Member]
Leasehold Improvements	Lesser of useful life or lease term

Note 2 - Acquisition (Details T

Note 2 - Acquisition (Details Textual) - USD ($) $ in Thousands	Dec. 13, 2021	Dec. 31, 2021	Dec. 31, 2020
Revenues, Total		$ 98,267	$ 107,712
UEHC [Member]
Business Combination, Consideration Transferred, Total	$ 23,519
Operating Lease, Right-of-Use Asset		960
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		1,131
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		128
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory		121
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles		30
Business Combination, Acquisition Related Costs		$ 354
UEHC [Member] | Fair Value Adjustment to Inventory [Member]
Revenues, Total			$ 950

Note 2 - Acquisition - Assets A

Note 2 - Acquisition - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 30, 2021	Dec. 31, 2020
Goodwill	$ 38,068		$ 27,018
UEHC [Member]
Cash	736
Accounts receivable	3,570
Inventories	3,622
Prepaid expenses and other current assets	785
Property, plant and equipment	429
Goodwill	11,019
Other intangible assets	8,830	$ 8,830
Other noncurrent assets	991
Accounts payable	(1,450)
Accrued compensation and related benefits	(540)
Accrued expenses and other current liabilities	(720)
Deferred tax liability, net	(2,213)
Other noncurrent liabilities	(803)
Net assets acquired	$ 24,256

Note 2 - Acquisition - Estimate

Note 2 - Acquisition - Estimated Fair Value and Annual Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2021	Dec. 31, 2021
Finite-Lived Intangible Asset, Expected Amortization, Year One		$ 1,286
Finite-Lived Intangible Asset, Expected Amortization, Year Two		938
Finite-Lived Intangible Asset, Expected Amortization, Year Three		927
Finite-Lived Intangible Asset, Expected Amortization, Year Four		927
Finite-Lived Intangible Asset, Expected Amortization, Year Five		783
UEHC [Member]
Finite-Lived Intangible Asset, Expected Amortization, Year One	$ 724
Finite-Lived Intangible Asset, Expected Amortization, Year Two	364
Finite-Lived Intangible Asset, Expected Amortization, Year Three	364
Finite-Lived Intangible Asset, Expected Amortization, Year Four	364
Finite-Lived Intangible Asset, Expected Amortization, Year Five	364
Total, estimated fair value	8,830	$ 8,830
Customer Relationships [Member] | UEHC [Member]
Finite-lived, estimated fair value	$ 4,070
Amortization period (Year)	15 years
Finite-Lived Intangible Asset, Expected Amortization, Year One	$ 271
Finite-Lived Intangible Asset, Expected Amortization, Year Two	271
Finite-Lived Intangible Asset, Expected Amortization, Year Three	271
Finite-Lived Intangible Asset, Expected Amortization, Year Four	271
Finite-Lived Intangible Asset, Expected Amortization, Year Five	271
Trade Names [Member] | UEHC [Member]
Indefinite-lived, estimated fair value	3,150
Customer Contracts [Member] | UEHC [Member]
Finite-lived, estimated fair value	$ 1,130
Amortization period (Year)	15 years
Finite-Lived Intangible Asset, Expected Amortization, Year One	$ 75
Finite-Lived Intangible Asset, Expected Amortization, Year Two	75
Finite-Lived Intangible Asset, Expected Amortization, Year Three	75
Finite-Lived Intangible Asset, Expected Amortization, Year Four	75
Finite-Lived Intangible Asset, Expected Amortization, Year Five	75
Backlog [Member] | UEHC [Member]
Finite-lived, estimated fair value	$ 360
Amortization period (Year)	1 year
Finite-Lived Intangible Asset, Expected Amortization, Year One	$ 360
Finite-Lived Intangible Asset, Expected Amortization, Year Two	0
Finite-Lived Intangible Asset, Expected Amortization, Year Three	0
Finite-Lived Intangible Asset, Expected Amortization, Year Four	0
Finite-Lived Intangible Asset, Expected Amortization, Year Five	0
Technology-Based Intangible Assets [Member] | UEHC [Member]
Finite-lived, estimated fair value	$ 120
Amortization period (Year)	7 years
Finite-Lived Intangible Asset, Expected Amortization, Year One	$ 17
Finite-Lived Intangible Asset, Expected Amortization, Year Two	17
Finite-Lived Intangible Asset, Expected Amortization, Year Three	17
Finite-Lived Intangible Asset, Expected Amortization, Year Four	17
Finite-Lived Intangible Asset, Expected Amortization, Year Five	$ 17

Note 2 - Acquisition - Pro Form

Note 2 - Acquisition - Pro Forma Information (Details) - UEHC [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue	$ 118,467	$ 125,826
Operating income	1,450	4,489
Net Income attributable to Ultralife Corporation	$ 1,367	$ 4,081
Basic (in dollars per share)	$ 9	$ 26
Diluted (in dollars per share)	$ 8	$ 25

Note 3 - Debt (Details Textual)

Note 3 - Debt (Details Textual) - Amended Credit Agreement [Member] $ in Thousands	Dec. 13, 2021USD ($)	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021USD ($)
Debt Issuance Costs, Gross					$ 123
Term Loan Facility [Member] | Long-term Debt, Current Maturities [Member]
Secured Debt, Total					2,000
Revolving Credit Facility [Member]
Proceeds from Long-term Lines of Credit	$ 10,980
Secured Debt, Total					10,000
Long-term Line of Credit, Total					$ 10,980
Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.15%
Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%
Revolving Credit Facility [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	1.85%
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	2.15%
Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	0.00%
Revolving Credit Facility [Member] | Base Rate [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	(0.50%)
Revolving Credit Facility [Member] | Forecast [Member]
Maximum Consolidated Senior Leverage Ratio		3	3.5	3.5
KeyBank [Member] | Term Loan Facility [Member]
Debt Instrument, Term (Year)	5 years
Debt Instrument, Face Amount	$ 10,000
KeyBank [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 - Supplemental Balance_3

Note 4 - Supplemental Balance Sheet Information (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance	$ 8,413	$ 10,653	$ 7,405
Restricted Cash and Cash Equivalents, Total	84	91
Depreciation, Total	$ 2,906	2,340
Number of Reporting Units	5
Goodwill, Impairment Loss	$ 0
Finite-Lived Intangible Asset, Expected Amortization, Year One	1,286
Finite-Lived Intangible Asset, Expected Amortization, Year Two	938
Finite-Lived Intangible Asset, Expected Amortization, Year Three	927
Finite-Lived Intangible Asset, Expected Amortization, Year Four	927
Finite-Lived Intangible Asset, Expected Amortization, Year Five	783
NETHERLANDS
Restricted Cash and Cash Equivalents, Total	$ 84	$ 91

Note 4 - Supplemental Balance_4

Note 4 - Supplemental Balance Sheet Information - Cash and Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash	$ 8,329	$ 10,562
Restricted cash	84	91
Total	$ 8,413	$ 10,653	$ 7,405

Note 4 - Supplemental Balance_5

Note 4 - Supplemental Balance Sheet Information - Components of Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Raw materials	$ 21,660	$ 17,277
Work in process	4,227	3,411
Finished products	7,302	7,505
Total	$ 33,189	$ 28,193

Note 4 - Supplemental Balance_6

Note 4 - Supplemental Balance Sheet Information - Components of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, plant and equipment, gross	$ 91,423	$ 88,070
Less – Accumulated depreciation	(68,218)	(65,220)
Property, plant and equipment, net	23,205	22,850
Land [Member]
Property, plant and equipment, gross	1,273	1,273
Building and Building Improvements [Member]
Property, plant and equipment, gross	15,442	15,393
Machinery and Equipment [Member]
Property, plant and equipment, gross	63,780	61,048
Furniture and Fixtures [Member]
Property, plant and equipment, gross	2,588	2,235
Computer Equipment [Member]
Property, plant and equipment, gross	7,579	6,894
Construction in Progress [Member]
Property, plant and equipment, gross	$ 761	$ 1,227

Note 4 - Supplemental Balance_7

Note 4 - Supplemental Balance Sheet Information - Summary of Goodwill (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)
Goodwill balance	$ 27,018
Effect of foreign currency translation	31
Goodwill balance	38,068
UEHC [Member]
Acquisition of Excell	11,019
Goodwill balance	11,019
Battery & Energy Products Segment [Member]
Goodwill balance	15,525
Effect of foreign currency translation	31
Goodwill balance	26,575
Battery & Energy Products Segment [Member] | UEHC [Member]
Acquisition of Excell	11,019
Communications Systems Segment [Member]
Goodwill balance	11,493
Effect of foreign currency translation	0
Goodwill balance	11,493
Communications Systems Segment [Member] | UEHC [Member]
Acquisition of Excell	$ 0

Note 4 - Supplemental Balance_8

Note 4 - Supplemental Balance Sheet Information - Composition of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Cost	$ 28,454	$ 19,662
Accumulated Amortization	11,064	10,453
Net	17,390	9,209
Customer Relationships [Member]
Cost	13,214	9,171
Accumulated Amortization	5,484	5,115
Net	7,730	4,056
Patented Technology [Member]
Cost	5,667	5,557
Accumulated Amortization	5,126	5,014
Net	541	543
Trade Names [Member]
Cost	4,670	1,524
Accumulated Amortization	436	324
Net	4,234	1,200
Trademarks [Member]
Cost	3,413	3,410
Accumulated Amortization	0	0
Net	3,413	$ 3,410
Other Intangible Assets [Member]
Cost	1,490
Accumulated Amortization	18
Net	$ 1,472

Note 4 - Supplemental Balance_9

Note 4 - Supplemental Balance Sheet Information - Amortization of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Amortization of intangible assets	$ 633	$ 595
Research and Development Expense [Member]
Amortization of intangible assets	118	124
Selling, General and Administrative Expenses [Member]
Amortization of intangible assets	$ 515	$ 471

Note 5 - Commitments and Cont_3

Note 5 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	Dec. 14, 2020	Dec. 31, 2021	Dec. 31, 2020
Gain (Loss) Related to Litigation Settlement, Total		$ 0	$ 1,593
Capital Addition Purchase Commitments [Member]
Long-term Purchase Commitment, Amount		$ 630
Lithium Ion Batteries Antitrust Litigation [Member]
Litigation Settlement, Amount Awarded from Other Party	$ 1,593
Gain (Loss) Related to Litigation Settlement, Total	$ 1,593

Note 5 - Commitments and Cont_4

Note 5 - Commitments and Contingencies - Changes in Produce Warranty Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Balance, January 1	$ 149	$ 195
Provision for warranties issued	142	200
Settlements made	(158)	(246)
Balance, December 31	$ 133	$ 149

Note 6 - Shareholders' Equity_2

Note 6 - Shareholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		9 Months Ended	12 Months Ended
	Jan. 31, 2018	Jun. 30, 2014	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Jul. 31, 2021	Dec. 31, 2019	Jun. 30, 2004
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)				1,306,824	1,217,163		1,541,792
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total				$ 850
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)				1 year 4 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)				$ 2.90	$ 2.78
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value				$ 738	$ 427
Proceeds from Stock Options Exercised			$ 398	$ 398	$ 238
Common Stock, Capital Shares Reserved for Future Issuance (in shares)				941,986
Restricted Stock [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total				$ 17
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)				1 year 2 months 12 days
The 2004 Long-term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)					2,900,000			750,000
The 2014 Long-term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)		1,750,000				2,750,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)				1,306,824
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 (in shares)		800,000
The 2014 Long-term Incentive Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Incentive Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		3 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)		7 years

Note 6 - Stock-based Compensati

Note 6 - Stock-based Compensation - Non-cash Stock Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Stock-based compensation expense	$ 671	$ 943
Share-based Payment Arrangement, Option [Member]
Stock-based compensation expense	618	838
Restricted Stock [Member]
Stock-based compensation expense	$ 53	$ 105

Note 6 - Stock-based Compensa_2

Note 6 - Stock-based Compensation - Stock Option Assumptions (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Risk-free interest rate	1.00%	0.40%
Volatility factor	50.00%	49.00%
Weighted average expected life (years) (Year)	4 years 9 months 18 days	5 years 3 months 18 days
Forfeiture rate	10.00%	10.00%
Dividends	0.00%	0.00%

Note 6 - Shareholders' Equity -

Note 6 - Shareholders' Equity - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Shares under Option, beginning of period (in shares)	1,217,163	1,541,792
Options outstanding - weighted average exercise price (in dollars per share)	$ 6.50	$ 6.88
Options granted (in shares)	340,500	256,000
Options granted - weighted average exercise price (in dollars per share)	$ 6.78	$ 6.51
Options exercised (in shares)	(204,429)	(355,797)
Options exercised - weighted average exercise price (in dollars per share)	$ 4.39	$ 6.08
Options forfeited or expired (in shares)	(46,410)	(224,832)
Options forfeited or expired - weighted average exercise price (in dollars per share)	$ 7.44	$ 9.76
Shares under option, end of period (in shares)	1,306,824	1,217,163
Options outstanding - weighted average exercise price (in dollars per share)	$ 6.87	$ 6.50
Options outstanding - weighted average remaining contractual term (Year)	4 years 2 months 19 days
Options outstanding - aggregate intrinsic value	$ 504
Vested and Expected to Vest (in shares)	1,189,175
Options vested and expected to vest - weighted average exercise price (in dollars per share)	$ 6.86
Options vested and expected to vest - weighted average remaining contractual term (Year)	4 years 18 days
Options vested and expected to vest - aggregate intrinsic value	$ 492
Options Exercisable (in shares)	745,288	738,452
Options exercisable, weighted-average exercise price (in dollars per share)	$ 6.85	$ 5.82
Options exercisable - weighted average remaining contractual term (Year)	2 years 9 months 18 days
Options exercisable - aggregate intrinsic value	$ 439

Note 6 - Shareholders' Equity_3

Note 6 - Shareholders' Equity - Options Range of Exercise Prices (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Upper range limit (in dollars per share)	$ 9.96
Options outstanding, number of outstanding options (in shares)	1,306,824
Options outstanding, weighted-average remaining contractual life (Year)	4 years 2 months 19 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 6.87
Options exercisable, number of options exercisable (in shares)	745,288
Options exercisable, weighted-average exercise price (in dollars per share)	$ 6.85	$ 5.82
Range One [Member]
Upper range limit (in dollars per share)	$ 5.31
Options outstanding, number of outstanding options (in shares)	325,579
Options outstanding, weighted-average remaining contractual life (Year)	2 years 8 months 4 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 4.58
Options exercisable, number of options exercisable (in shares)	240,579
Options exercisable, weighted-average exercise price (in dollars per share)	$ 4.34
Range Two [Member]
Upper range limit (in dollars per share)	$ 6.51
Options outstanding, number of outstanding options (in shares)	321,411
Options outstanding, weighted-average remaining contractual life (Year)	4 years 4 months 9 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 6.28
Options exercisable, number of options exercisable (in shares)	166,602
Options exercisable, weighted-average exercise price (in dollars per share)	$ 6.07
Range Three [Member]
Upper range limit (in dollars per share)	$ 7.16
Options outstanding, number of outstanding options (in shares)	205,750
Options outstanding, weighted-average remaining contractual life (Year)	6 years 5 months 12 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 6.97
Options exercisable, number of options exercisable (in shares)	11,667
Options exercisable, weighted-average exercise price (in dollars per share)	$ 7.09
Range Four [Member]
Upper range limit (in dollars per share)	$ 9.96
Options outstanding, number of outstanding options (in shares)	454,084
Options outstanding, weighted-average remaining contractual life (Year)	4 years 2 months 19 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 8.88
Options exercisable, number of options exercisable (in shares)	326,440
Options exercisable, weighted-average exercise price (in dollars per share)	$ 9.08

Note 7 - Income Taxes (Details

Note 7 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Tax Expense (Benefit), Total	$ 79	$ 1,692
Deferred Tax Assets, Valuation Allowance, Total	2,697	1,942
Unrecognized Tax Benefits, Ending Balance	0	$ 0
General Business Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	2,239
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards, Total	$ 44,716
Open Tax Year	2002 2005 2006 2007 2011 2012 2013 2014 2015
Foreign Tax Authority [Member]
Deferred Tax Assets, Valuation Allowance, Total	$ 0
Open Tax Year	2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
Foreign Tax Authority [Member] | Her Majesty's Revenue and Customs (HMRC) [Member]
Operating Loss Carryforwards, Total	$ 11,000
State and Local Jurisdiction [Member]
Open Tax Year	2002 2005 2006 2007 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Note 7 - Income Taxes - Income

Note 7 - Income Taxes - Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
State	$ 16	$ 23
Foreign	210	283
Current Income Tax Expense (Benefit), Total	226	306
Federal	(158)	1,673
Foreign	11	(287)
Deferred Income Tax Expense (Benefit), Total	(147)	1,386
Total income tax provision	$ 79	$ 1,692

Note 7 - Income Taxes - Deferre

Note 7 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Net operating loss carryforwards	$ 12,567	$ 12,481
Tax credit carryforwards	2,239	2,070
Intangible assets	1,412	1,352
Accrued expenses, reserves and other	1,996	2,176
Research and development	1,999	984
Total deferred tax assets	20,213	19,063
Valuation allowance for deferred tax assets	(2,697)	(1,942)
Net deferred tax assets	17,516	17,121
Property, plant and equipment	(79)	(262)
Intangible assets	8,219	5,538
Total deferred tax liabilities	(8,298)	(5,800)
Net deferred tax assets	$ 9,218	$ 11,321

Note 7 - Income Taxes - Net Def

Note 7 - Income Taxes - Net Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred income taxes, net	$ 11,472	$ 11,836
Deferred tax liabilities	(2,254)	(515)
Net Deferred Tax Assets	$ 9,218	$ 11,321

Note 7 - Income Taxes - United

Note 7 - Income Taxes - United States and Foreign Income (Loss) From Continuing Operations Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
United States	$ (704)	$ 6,586
Foreign	553	437
Income Before Income Taxes	$ (151)	$ 7,023

Note 7 - Income Taxes - Effecti

Note 7 - Income Taxes - Effective Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statutory income tax rate	21.00%	21.00%
Equity compensation	11.60%	4.50%
Acquisition-related costs	(34.70%)
Income tax credits	72.70%	(2.30%)
Foreign tax rate change	(89.70%)	0.00%
Foreign tax rates	(15.50%)	0.10%
States taxes	(10.80%)	0.30%
Other	(7.00%)	0.50%
Effective income tax rate	(52.40%)	24.10%

Note 8 - Operating Leases (Deta

Note 8 - Operating Leases (Details Textual)	Dec. 31, 2021
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	10 years

Note 8 - Operating Leases - Lea

Note 8 - Operating Leases - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating lease cost	$ 762	$ 703
Variable lease cost	79	75
Total lease cost	$ 841	$ 778

Note 8 - Operating Leases - Sup

Note 8 - Operating Leases - Supplement Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating cash flows from operating leases	$ 744	$ 688
Right-of-use assets obtained in exchange for lease liabilities:	$ 1,020	$ 875

Note 8 - Operating Leases - S_2

Note 8 - Operating Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Weighted-average remaining lease term (years) (Year)	4 years 6 months	3 years 3 months 18 days
Weighted-average discount rate	4.50%	4.50%
Other Noncurrent Assets [Member]
Operating lease right-of-use asset	$ 2,581	$ 2,189
Accrued Expenses and Other Current Liabilities [Member]
Current operating lease liability	867	680
Other Noncurrent Liabilities [Member]
Operating lease liability, net of current portion	1,743	1,524
Accrued Expenses and Other Current Liabilites and Other Noncurrent Liabilities [Member]
Total operating lease liability	$ 2,610	$ 2,204

Note 8 - Operating Leases - Fut

Note 8 - Operating Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
2022	$ 889
2023	894
2024	434
2025	139
2026	140
Thereafter	424
Total lease payments	2,920
Less: Imputed interest	(310)
Accrued Expenses and Other Current Liabilites and Other Noncurrent Liabilities [Member]
Operating Lease, Liability, Total	$ 2,610	$ 2,204

Note 9 - 401(k) Retirement Be_2

Note 9 - 401(k) Retirement Benefit Plan (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Defined Contribution Plan, Employer Matching Contribution, First 3%, Percent of Match	100.00%
Defined Contribution Plan, Maximum Employee Contribution Percentage, Subject to Employer Matching Contribution	3.00%	6.00%
Defined Contribution Plan, Employer Matching Contribution, Next 2%, Percent of Match	50.00%
Defined Contribution Plan, Maximum Employee Contribution Percentage, Subject to Employer 50% Matching Contribution	2.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	4.00%	3.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Match		50.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 586	$ 466

Note 10 - Business Segment In_3

Note 10 - Business Segment Information (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Number of Operating Segments	2
Non-US [Member]
Long-Lived Assets	$ 26,762	$ 12,456

Note 10 - Business Segment In_4

Note 10 - Business Segment Information - Segment Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue	$ 98,267	$ 107,712
Segment contribution	35	5,701
Other income (expense)	186	(1,322)
Income tax provision (benefit)	79	1,692
Non-controlling interest	4	99
Net loss attributable to Ultralife	(234)	5,232
Total assets	159,538	137,701
Capital expenditures	2,814	3,101
Goodwill	38,068	27,018
Depreciation and amortization of intangible assets	3,539	2,935
Stock-based compensation	671	943
Battery & Energy Products Segment [Member]
Revenue	87,083	91,907
Segment contribution	21,063	23,400
Other income (expense)
Total assets	110,633	85,112
Capital expenditures	2,104	3,031
Goodwill	26,575	15,525
Depreciation and amortization of intangible assets	2,847	2,269
Stock-based compensation	298	446
Communications Systems Segment [Member]
Revenue	11,184	15,805
Segment contribution	3,579	5,759
Other income (expense)
Total assets	25,359	26,425
Capital expenditures	255	0
Goodwill	11,493	11,493
Depreciation and amortization of intangible assets	326	342
Stock-based compensation	125	155
Corporate Segment [Member]
Revenue	0	0
Segment contribution	(24,607)	(23,458)
Other income (expense)	186	(1,322)
Income tax provision (benefit)	79	1,692
Non-controlling interest	4	99
Total assets	23,546	26,164
Capital expenditures	455	70
Goodwill	0	0
Depreciation and amortization of intangible assets	366	324
Stock-based compensation	$ 248	$ 342

Note 10 - Business Segment In_5

Note 10 - Business Segment Information - Revenue by Business Segment Sector (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Revenues	[1]	$ 98,267	$ 107,712
Commercial [Member]
Revenues		$ 64,079	$ 62,330
Revenue, percentage		65.00%	58.00%
Government & Defense [Member]
Revenues		$ 34,188	$ 45,382
Revenue, percentage		35.00%	42.00%
Battery & Energy Products Segment [Member]
Revenues	[1]	$ 87,083	$ 91,907
Battery & Energy Products Segment [Member] | Commercial [Member]
Revenues		64,079	62,330
Battery & Energy Products Segment [Member] | Government & Defense [Member]
Revenues		23,004	29,577
Communications Systems Segment [Member]
Revenues	[1]	11,184	15,805
Communications Systems Segment [Member] | Commercial [Member]
Revenues		0	0
Communications Systems Segment [Member] | Government & Defense [Member]
Revenues		$ 11,184	$ 15,805
[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 10 - Business Segment In_6

Note 10 - Business Segment Information - Domestic and International Revenue by Segment (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Revenues	[1]	$ 98,267	$ 107,712
UNITED STATES
Revenues	[1]	$ 48,819	$ 62,255
Revenue, percentage	[1]	50.00%	58.00%
Non-US [Member]
Revenues	[1]	$ 49,448	$ 45,457
Revenue, percentage	[1]	50.00%	42.00%
Battery & Energy Products Segment [Member]
Revenues	[1]	$ 87,083	$ 91,907
Battery & Energy Products Segment [Member] | UNITED STATES
Revenues	[1]	43,298	49,930
Battery & Energy Products Segment [Member] | Non-US [Member]
Revenues	[1]	43,785	41,977
Communications Systems Segment [Member]
Revenues	[1]	11,184	15,805
Communications Systems Segment [Member] | UNITED STATES
Revenues	[1]	5,521	12,325
Communications Systems Segment [Member] | Non-US [Member]
Revenues	[1]	$ 5,663	$ 3,480
[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 - Impact of COVID-19 (D

Note 11 - Impact of COVID-19 (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets, Net, Ending Balance	$ 17,390	$ 9,209
Covid-19 [Member]
Decrease in Sales	11,000
Decrease in Operating Profit	4,500
Covid-19 [Member] | Backlog, Excluding Excell [Member]
Finite-Lived Intangible Assets, Net, Ending Balance	53,166
Finite-Lived Intangible Assets, Period Increase (Decrease), Total	$ 13,874
Finite-Lived Intangible Assets, Period Increase (Decrease), Percentage	35.30%