Ultralife (ULBI) 10-Q 29 Jul 21 2021 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 26, 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	Q2
Document Fiscal Year Focus	2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 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 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 Common Stock, Shares Outstanding		16,053,207

Consolidated Balance Sheets (Cu

Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash	$ 15,828	$ 10,653
Trade accounts receivable, net of allowance for doubtful accounts of $332 and $317, respectively	18,712	21,054
Inventories, net	27,414	28,193
Prepaid expenses and other current assets	2,351	4,596
Total current assets	64,305	64,496
Property, plant and equipment, net	22,720	22,850
Goodwill	27,115	27,018
Other intangible assets, net	8,936	9,209
Deferred income taxes, net	11,459	11,836
Other noncurrent assets	1,985	2,292
Total Assets	136,520	137,701
Current Liabilities:
Accounts payable	9,545	10,839
Current portion of long-term debt	624	1,361
Accrued compensation and related benefits	1,396	1,748
Accrued expenses and other current liabilities	3,966	4,758
Total current liabilities	15,531	18,706
Deferred income taxes	492	515
Other noncurrent liabilities	1,260	1,557
Total liabilities	17,283	20,778
Commitments and contingencies (Note 8)
Stockholders’ 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 – 20,474,676 shares at June 30, 2021 and 20,373,519 shares at December 31, 2020; outstanding – 16,051,707 shares at June 30, 2021 and 15,959,984 shares at December 31, 2020	2,047	2,037
Capital in excess of par value	186,138	185,464
Accumulated deficit	(46,116)	(47,598)
Accumulated other comprehensive loss	(1,586)	(1,782)
Treasury stock - at cost; 4,422,969 shares at June 30, 2021 and 4,413,535 shares at December 31, 2020	(21,388)	(21,321)
Total Ultralife Corporation equity	119,095	116,800
Non-controlling interest	142	123
Total stockholders’ equity	119,237	116,923
Total liabilities and stockholders’ equity	$ 136,520	$ 137,701

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Trade accounts receivable, allowance for doubtful accounts	$ 332	$ 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)	20,474,676	20,373,519
Common stock, shares outstanding (in shares)	16,051,707	15,959,984
Treasury stock, shares (in shares)	4,422,969	4,413,535

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues	[1]	$ 26,770	$ 28,560	$ 52,743	$ 54,374
Cost of products sold		19,503	20,597	38,498	39,077
Gross profit		7,267	7,963	14,245	15,297
Operating expenses:
Research and development		1,853	1,275	3,500	2,823
Selling, general and administrative		4,323	4,394	8,702	8,695
Total operating expenses		6,176	5,669	12,202	11,518
Operating income		1,091	2,294	2,043	3,779
Other expense (income):
Interest and financing expense		55	106	111	280
Miscellaneous		(34)	11	(34)	(71)
Total other expense		21	117	77	209
Income before income tax provision		1,070	2,177	1,966	3,570
Income tax provision		248	499	465	818
Net income		822	1,678	1,501	2,752
Net income attributable to non-controlling interest		11	20	19	35
Net income attributable to Ultralife Corporation		811	1,658	1,482	2,717
Other comprehensive income (loss):
Foreign currency translation adjustments		93	42	196	(765)
Comprehensive income attributable to Ultralife Corporation		$ 904	$ 1,700	$ 1,678	$ 1,952
Net income per share attributable to Ultralife common stockholders – basic (in dollars per share)		$ 5	$ 10	$ 9	$ 17
Net income per share attributable to Ultralife common stockholders – diluted (in dollars per share)		$ 5	$ 10	$ 9	$ 17
Weighted average shares outstanding – basic (in shares)		16,019	15,882	15,997	15,880
Potential common shares (in shares)		241	251	197	234
Weighted average shares outstanding - diluted (in shares)		16,260	16,133	16,194	16,114
[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 Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
OPERATING ACTIVITIES:
Net income	$ 1,501	$ 2,752
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,460	1,161
Amortization of intangible assets	310	295
Amortization of financing fees	52	24
Stock-based compensation	370	534
Deferred income taxes	345	633
Changes in operating assets and liabilities:
Accounts receivable	2,390	3,578
Inventories	864	1,507
Prepaid expenses and other assets	2,536	1,307
Accounts payable and other liabilities	(2,873)	(2,909)
Net cash provided by operating activities	6,955	8,882
INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(1,225)	(1,533)
Proceeds from sale of equipment	0	120
Net cash used in investing activities	(1,225)	(1,413)
FINANCING ACTIVITIES:
Payment of credit facilities	(789)	(6,410)
Proceeds from exercise of stock options	314	76
Tax withholdings on stock-based awards	(67)	(15)
Net cash used in financing activities	(542)	(6,349)
Effect of exchange rate changes on cash	(13)	(136)
INCREASE IN CASH	5,175	984
Cash, Beginning of period	10,653	7,405
Cash, End of period	$ 15,828	$ 8,389

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - 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 income				2,717		35	2,752
Stock option exercises (in shares)	16,631
Stock option exercises	$ 2	74					76
Stock-based compensation – stock options		470					470
Stock-based compensation -restricted stock		64					64
Vesting of restricted stock (in shares)	12,501
Vesting of restricted stock	$ 2				(15)		(13)
Foreign currency translation adjustments			(765)				(765)
Balance (in shares) at Jun. 30, 2020	20,297,182
Balance at Jun. 30, 2020	$ 2,030	184,900	(3,296)	(50,113)	(21,246)	59	112,334
Balance (in shares) at Mar. 31, 2020	20,281,516
Balance at Mar. 31, 2020	$ 2,028	184,550	(3,338)	(51,771)	(21,239)	39	110,269
Net income				1,658		20	1,678
Stock option exercises (in shares)	8,998
Stock option exercises	$ 1	46					47
Stock-based compensation – stock options		278					278
Stock-based compensation -restricted stock		26					26
Vesting of restricted stock (in shares)	6,668
Vesting of restricted stock	$ 1				(7)		(6)
Foreign currency translation adjustments			42				42
Balance (in shares) at Jun. 30, 2020	20,297,182
Balance at Jun. 30, 2020	$ 2,030	184,900	(3,296)	(50,113)	(21,246)	59	$ 112,334
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 income				1,482		19	$ 1,501
Stock option exercises (in shares)	88,656						128,096
Stock option exercises	$ 9	305			(52)		$ 262
Stock-based compensation – stock options		337					337
Stock-based compensation -restricted stock		33					33
Vesting of restricted stock (in shares)	12,501
Vesting of restricted stock	$ 1	(1)			(15)		(15)
Foreign currency translation adjustments			196				$ 196
Balance (in shares) at Jun. 30, 2021	20,474,676						16,051,707
Balance at Jun. 30, 2021	$ 2,047	186,138	(1,586)	(46,116)	(21,388)	142	$ 119,237
Balance (in shares) at Mar. 31, 2021	20,416,511
Balance at Mar. 31, 2021	$ 2,042	185,674	(1,679)	(46,927)	(21,380)	131	117,861
Net income				811		11	822
Stock option exercises (in shares)	51,497
Stock option exercises	$ 5	278					283
Stock-based compensation – stock options		174					174
Stock-based compensation -restricted stock		12					12
Vesting of restricted stock (in shares)	6,668
Vesting of restricted stock					(8)		(8)
Foreign currency translation adjustments			93				$ 93
Balance (in shares) at Jun. 30, 2021	20,474,676						16,051,707
Balance at Jun. 30, 2021	$ 2,047	$ 186,138	$ (1,586)	$ (46,116)	$ (21,388)	$ 142	$ 119,237

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation	6 Months Ended
	Jun. 30, 2021
Notes to Financial Statements
Business Description and Accounting Policies [Text Block]	1. BASIS OF PRESENTATION The accompanying unaudited Consolidated Financial Statements of Ultralife Corporation and its subsidiaries (the “Company”, “Ultralife”, “we” or “our”) have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial information and with the instructions to Rule 8 03 X. not not 10 December 31, 2020. The December 31, 2020 not Certain items previously reported in specific financial statement captions have been reclassified to conform to the current presentation. 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 - Debt

Note 2 - Debt	6 Months Ended
	Jun. 30, 2021
Notes to Financial Statements
Debt Disclosure [Text Block]	2. DEBT On May 1, 2019, May 31, 2017 ( The Amended Credit Agreement, among other things, provides for a five May 31, 2022. six May 31, 2022, may As of June 30, 2021, no June 30, 2021, The Company is required to repay the borrowings under the Term Loan Facility in sixty 60 May 31, 2019, April 30, 2024. May 31, 2022. may December 31, 2020. No June 30, 2021. In addition to the customary affirmative and negative covenants, the Company must maintain a consolidated fixed charge coverage ratio equal to or greater than 1.15 to 1.0, 1.0, June 30, 2021. Borrowings under the Credit Facilities are secured by substantially all the assets of the Company. Availability under the Revolving Credit Facility is subject to certain borrowing base limits based on receivables and inventories. Interest will accrue on outstanding indebtedness under the Credit Facilities at the Base Rate or the Overnight LIBOR Rate, as selected by the Company, plus the applicable margin. The Base Rate is the higher of (a) the Prime Rate, (b) the Federal Funds Effective Rate plus 50 basis points, and (c) the Overnight LIBOR Rate plus 100 zero 0 The Company must pay a quarterly fee of 0.1% to 0.2% 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 Credit Facilities and from the proceeds of certain transactions. Upon the occurrence of an event of default, the outstanding obligations may

Note 3 - Earnings Per Share

Note 3 - Earnings Per Share	6 Months Ended
	Jun. 30, 2021
Notes to Financial Statements
Earnings Per Share [Text Block]	3. EARNINGS PER SHARE Basic earnings per share (“EPS”) is computed by dividing net income attributable to Ultralife by the weighted-average shares outstanding during the period. Diluted EPS includes the dilutive effect of securities, if any, and is calculated using the treasury stock method. For the three June 30, 2021, three June 30, 2020, six June 30, 2021 June 30, 2020, There were 414,916 and 896,167 outstanding stock options for the three June 30, 2021 June 30, 2020, not six June 30, 2021 June 30, 2020, not

Note 4 - Supplemental Balance S

Note 4 - Supplemental Balance Sheet Information	6 Months Ended
	Jun. 30, 2021
Notes to Financial Statements
Supplemental Balance Sheet Disclosures [Text Block]	4. SUPPLEMENTAL BALANCE SHEET INFORMATION Fair Value Measurements and Disclosures The fair value of financial instruments approximated their carrying values at June 30, 2021 December 31, 2020. Cash The composition of the Company’s cash was as follows: June 30, December 31, 2021 2020 Cash $ 15,740 $ 10,562 Restricted cash 88 91 Total $ 15,828 $ 10,653 As of June 30, 2021 December 31, 2020, third Inventories Inventories are stated at the lower of cost or net realizable value, net of obsolescence reserves, with cost determined under the first first June 30, December 31, 2021 2020 Raw materials $ 16,817 $ 17,277 Work in process 3,117 3,411 Finished goods 7,480 7,505 Total $ 27,414 $ 28,193 Property, Plant and Equipment, Net Major classes of property, plant and equipment consisted of the following: June 30, December 31, 2021 2020 Land $ 1,273 $ 1,273 Buildings and leasehold improvements 15,407 15,393 Machinery and equipment 62,109 61,048 Furniture and fixtures 2,328 2,235 Computer hardware and software 7,124 6,894 Construction in process 1,189 1,227 89,430 88,070 Less: Accumulated depreciation (66,710 ) (65,220 ) Property, plant and equipment, net $ 22,720 $ 22,850 Depreciation expense for property, plant and equipment was as follows: Three-month period ended Six-month period ended June 30, June 30, June 30, June 30, 2021 2020 2021 2020 Depreciation expense $ 730 $ 582 $ 1,460 $ 1,161 Goodwill The following table summarizes the goodwill activity by segment for the six June 30, 2021. Battery & Energy Communications Products Systems Total Balance – December 31, 2020 $ 15,525 $ 11,493 $ 27,018 Effect of foreign currency translation 97 - 97 Balance – June 30, 2021 $ 15,622 $ 11,493 $ 27,115 Other Intangible Assets, Net The composition of other intangible assets was: June 30, 2021 Accumulated Cost Amortization Net Trademarks $ 3,412 $ - $ 3,412 Customer relationships 9,207 5,313 3,894 Patents and technology 5,572 5,087 485 Distributor relationships 377 377 - Trade name 1,530 385 1,145 Total $ 20,098 $ 11,162 $ 8,936 December 31, 2020 Accumulated Cost Amortization Net Trademarks $ 3,410 $ - $ 3,410 Customer relationships 9,171 5,115 4,056 Patents and technology 5,557 5,014 543 Distributor relationships 377 377 - Trade name 1,524 324 1,200 Total $ 20,039 $ 10,830 $ 9,209 The change in the cost of total intangible assets from December 31, 2020 June 30, 2021 Amortization expense for other intangible assets was as follows: Three-month period ended Six-month period ended June 30, June 30, June 30, June 30, 2021 2020 2021 2020 Amortization included in: Research and development $ 33 $ 30 $ 66 $ 61 Selling, general and administrative 123 116 244 234 Total amortization expense $ 156 $ 146 $ 310 $ 295

Note 5 - Stock-based Compensati

Note 5 - Stock-based Compensation	6 Months Ended
	Jun. 30, 2021
Notes to Financial Statements
Shareholders' Equity and Share-based Payments [Text Block]	5. STOCK-BASED COMPENSATION We recorded non-cash stock compensation expense in each period as follows: Three-month period ended Six-month period ended June 30, June 30, June 30, June 30, 2021 2020 2021 2020 Stock options $ 174 $ 278 $ 337 $ 470 Restricted stock grants 12 26 33 64 Total $ 186 $ 304 $ 370 $ 534 We have stock options outstanding from various stock-based employee compensation plans for which we record compensation cost relating to share-based payment transactions in our financial statements. As of June 30, 2021, The following table summarizes stock option activity for the six June 30, 2021: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (years) Aggregate Intrinsic Value Outstanding at January 1, 2021 1,217,163 $ 6.50 Granted - - Exercised (128,096 ) 4.60 Forfeited or expired (14,663 ) 7.07 Outstanding at June 30, 2021 1,074,404 $ 6.72 3.78 $ 2,037 Vested and expected to vest at June 30, 2021 998,941 $ 6.66 3.66 $ 1,963 Exercisable at June 30, 2021 744,455 $ 6.42 3.05 $ 1,710 Cash received from stock option exercises under our stock-based compensation plans for the three June 30, 2021 June 30, 2020 six June 30, 2021 June 30, 2020 In October 2020, April 2019, January 2018, three 3 June 30, 2021,

Note 6 - Income Taxes

Note 6 - Income Taxes	6 Months Ended
	Jun. 30, 2021
Notes to Financial Statements
Income Tax Disclosure [Text Block]	6. INCOME TAXES Our effective income tax rate for the six June 30, 2021 June 30, 2020 As of December 31, 2020, 2021 2035, 2028 2039, June 30, 2021, not As of June 30, 2021, may no As of June 30, 2021, not not. As of June 30, 2021, There were no unrecognized tax benefits related to uncertain tax positions at June 30, 2021 December 31, 2020. 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 2019 2020 2001, 2002, 2005 2007 2011 2015 2001, 2002, 2005 2007 2011 2020 2010 2020

Note 7 - Operating Leases

Note 7 - Operating Leases	6 Months Ended
	Jun. 30, 2021
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	7. OPERATING LEASES The Company has operating leases predominantly for operating facilities. As of June 30, 2021, one three not not no no The components of lease expense for the current and prior-year comparative periods were as follows: Three months ended Six months ended June 30, 2021 June 30, 2020 June 30, 2021 June 30, 2020 Operating lease cost $ 189 $ 168 $ 376 $ 336 Variable lease cost 13 18 32 36 Total lease cost $ 202 $ 186 $ 408 $ 372 Supplemental cash flow information related to leases was as follows: Six months ended June 30, 2021 June 30, 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 365 $ 329 Right-of-use assets obtained in exchange for lease liabilities: $ - $ - Supplemental balance sheet information related to leases was as follows: Balance Sheet Classification June 30, 2021 December 31, 2020 Assets: Operating lease right-of-use asset Other noncurrent assets $ 1,881 $ 2,189 Liabilities: Current operating lease liability Accrued expenses and other current liabilities $ 663 $ 680 Operating lease liability, net of current portion Other noncurrent liabilities 1,243 1,524 Total operating lease liability $ 1,906 $ 2,204 Weighted-average remaining lease term (years) 2.9 3.3 Weighted-average discount rate 4.5 % 4.5 % Future minimum lease payments as of June 30, 2021 Maturity of Operating Lease Liabilities 2021 363 2022 700 2023 720 2024 279 Total lease payments 2,062 Less: Imputed interest 156 Present value of remaining lease payments $ 1,906

Note 8 - Commitments and Contin

Note 8 - Commitments and Contingencies	6 Months Ended
	Jun. 30, 2021
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	8. COMMITMENTS AND CONTINGENCIES a. Purchase Commitments As of June 30, 2021, b. 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 warranty 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 first six 2021 2020 Six-month period ended June 30, 2021 2020 Accrued warranty obligations – beginning $ 149 $ 195 Accruals for warranties issued 121 59 Settlements made (108 ) (26 ) Accrued warranty obligations – ending $ 162 $ 228 c. Contingencies and 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

Note 9 - Revenue Recognition

Note 9 - Revenue Recognition	6 Months Ended
	Jun. 30, 2021
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	9. 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 six June 30, 2021 2020 not Deferred revenue, unbilled revenue and deferred contract costs recorded on our Consolidated Balance Sheets as of June 30, 2021 December 31, 2020 not June 30, 2021 December 31, 2020, no one 606,

Note 10 - Business Segment Info

Note 10 - Business Segment Information	6 Months Ended
	Jun. 30, 2021
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	10. BUSINESS SEGMENT INFORMATION We report our results in two operating segments: Battery & Energy Products and Communications Systems. The Battery & Energy Products segment includes: Lithium 9 The components of segment performance were as follows: Three-month period ended June 30, 2021: Battery & Energy Products Communications Systems Corporate Total Revenues $ 22,875 $ 3,895 $ - $ 26,770 Segment contribution 6,016 1,251 (6,176 ) 1,091 Other expense (21 ) (21 ) Income tax provision (248 ) (248 ) Non-controlling interest (11 ) (11 ) Net income attributable to Ultralife $ 811 Three-month period ended June 30, 2020: Battery & Energy Products Communications Systems Corporate Total Revenues $ 24,036 $ 4,524 $ - $ 28,560 Segment contribution 6,026 1,937 (5,669 ) 2,294 Other expense (117 ) (117 ) Income tax provision (499 ) (499 ) Non-controlling interest (20 ) (20 ) Net income attributable to Ultralife $ 1,658 Six-month period ended June 30, 2021: Battery & Energy Products Communications Systems Corporate Total Revenues $ 44,986 $ 7,757 $ - $ 52,743 Segment contribution 11,452 2,793 (12,202 ) 2,043 Other expense (77 ) (77 ) Income tax provision (465 ) (465 ) Non-controlling interest (19 ) (19 ) Net income attributable to Ultralife $ 1,482 Six-month period ended June 30, 2020: Battery & Energy Products Communications Systems Corporate Total Revenues $ 44,797 $ 9,577 $ - $ 54,374 Segment contribution 11,342 3,955 (11,518 ) 3,779 Other expense (209 ) (209 ) Income tax provision (818 ) (818 ) Non-controlling interest (35 ) (35 ) Net income attributable to Ultralife $ 2,717 The following tables disaggregate our business segment revenues by major source and geography. Commercial and Government/Defense Revenue Information: Three-month period ended June 30, 2021: Total Revenue Commercial Government/ Defense Battery & Energy Products $ 22,875 $ 16,011 $ 6,864 Communications Systems 3,895 - 3,895 Total $ 26,770 $ 16,011 $ 10,759 60 % 40 % Three-month period ended June 30, 2020: Total Revenue Commercial Government/ Defense Battery & Energy Products $ 24,036 $ 16,172 $ 7,864 Communications Systems 4,524 - 4,524 Total $ 28,560 $ 16,172 $ 12,388 57 % 43 % Six-month period ended June 30, 2021: Total Revenue Commercial Government/ Defense Battery & Energy Products $ 44,986 $ 30,356 $ 14,630 Communications Systems 7,757 - 7,757 Total $ 52,743 $ 30,356 $ 22,387 58 % 42 % Six-month period ended June 30, 2020: Total Revenue Commercial Government/ Defense Battery & Energy Products $ 44,797 $ 30,974 $ 13,823 Communications Systems 9,577 - 9,577 Total $ 54,374 $ 30,974 $ 23,400 57 % 43 % U.S. and Non-U.S. Revenue Information 1 : Three-month period ended June 30, 2021: Total Revenue United States Non-United States Battery & Energy Products $ 22,875 $ 11,813 $ 11,062 Communications Systems 3,895 1,953 1,942 Total $ 26,770 $ 13,766 $ 13,004 51 % 49 % Three-month period ended June 30, 2020: Total Revenue United States Non-United States Battery & Energy Products $ 24,036 $ 14,195 $ 9,841 Communications Systems 4,524 4,224 300 Total $ 28,560 $ 18,419 $ 10,141 64 % 36 % Six-month period ended June 30, 2021: Total Revenue United States Non-United States Battery & Energy Products $ 44,986 $ 24,403 $ 20,583 Communications Systems 7,757 3,421 4,336 Total $ 52,743 $ 27,824 $ 24,919 53 % 47 % Six-month period ended June 30, 2020: Total Revenue United States Non-United States Battery & Energy Products $ 44,797 $ 25,479 $ 19,318 Communications Systems 9,577 8,577 1,000 Total $ 54,374 $ 34,056 $ 20,318 63 % 37 % 1 may

Significant Accounting Policies

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	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 4 - Supplemental Balance_2

Note 4 - Supplemental Balance Sheet Information (Tables)	6 Months Ended
	Jun. 30, 2021
Notes Tables
Cash, Cash Equivalents and Investments [Table Text Block]	June 30, December 31, 2021 2020 Cash $ 15,740 $ 10,562 Restricted cash 88 91 Total $ 15,828 $ 10,653
Schedule of Inventory, Current [Table Text Block]	June 30, December 31, 2021 2020 Raw materials $ 16,817 $ 17,277 Work in process 3,117 3,411 Finished goods 7,480 7,505 Total $ 27,414 $ 28,193
Property, Plant and Equipment [Table Text Block]	June 30, December 31, 2021 2020 Land $ 1,273 $ 1,273 Buildings and leasehold improvements 15,407 15,393 Machinery and equipment 62,109 61,048 Furniture and fixtures 2,328 2,235 Computer hardware and software 7,124 6,894 Construction in process 1,189 1,227 89,430 88,070 Less: Accumulated depreciation (66,710 ) (65,220 ) Property, plant and equipment, net $ 22,720 $ 22,850 Three-month period ended Six-month period ended June 30, June 30, June 30, June 30, 2021 2020 2021 2020 Depreciation expense $ 730 $ 582 $ 1,460 $ 1,161
Schedule of Goodwill [Table Text Block]	Battery & Energy Communications Products Systems Total Balance – December 31, 2020 $ 15,525 $ 11,493 $ 27,018 Effect of foreign currency translation 97 - 97 Balance – June 30, 2021 $ 15,622 $ 11,493 $ 27,115
Schedule of Finite-Lived Intangible Assets [Table Text Block]	June 30, 2021 Accumulated Cost Amortization Net Trademarks $ 3,412 $ - $ 3,412 Customer relationships 9,207 5,313 3,894 Patents and technology 5,572 5,087 485 Distributor relationships 377 377 - Trade name 1,530 385 1,145 Total $ 20,098 $ 11,162 $ 8,936 December 31, 2020 Accumulated Cost Amortization Net Trademarks $ 3,410 $ - $ 3,410 Customer relationships 9,171 5,115 4,056 Patents and technology 5,557 5,014 543 Distributor relationships 377 377 - Trade name 1,524 324 1,200 Total $ 20,039 $ 10,830 $ 9,209
Finite-lived Intangible Assets Amortization Expense [Table Text Block]	Three-month period ended Six-month period ended June 30, June 30, June 30, June 30, 2021 2020 2021 2020 Amortization included in: Research and development $ 33 $ 30 $ 66 $ 61 Selling, general and administrative 123 116 244 234 Total amortization expense $ 156 $ 146 $ 310 $ 295

Note 5 - Stock-based Compensa_2

Note 5 - Stock-based Compensation (Tables)	6 Months Ended
	Jun. 30, 2021
Notes Tables
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]	Three-month period ended Six-month period ended June 30, June 30, June 30, June 30, 2021 2020 2021 2020 Stock options $ 174 $ 278 $ 337 $ 470 Restricted stock grants 12 26 33 64 Total $ 186 $ 304 $ 370 $ 534
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (years) Aggregate Intrinsic Value Outstanding at January 1, 2021 1,217,163 $ 6.50 Granted - - Exercised (128,096 ) 4.60 Forfeited or expired (14,663 ) 7.07 Outstanding at June 30, 2021 1,074,404 $ 6.72 3.78 $ 2,037 Vested and expected to vest at June 30, 2021 998,941 $ 6.66 3.66 $ 1,963 Exercisable at June 30, 2021 744,455 $ 6.42 3.05 $ 1,710

Note 7 - Operating Leases (Tabl

Note 7 - Operating Leases (Tables)	6 Months Ended
	Jun. 30, 2021
Notes Tables
Lease, Cost [Table Text Block]	Three months ended Six months ended June 30, 2021 June 30, 2020 June 30, 2021 June 30, 2020 Operating lease cost $ 189 $ 168 $ 376 $ 336 Variable lease cost 13 18 32 36 Total lease cost $ 202 $ 186 $ 408 $ 372
Lessee, Lease, Cash Flow Information [Table Text Block]	Six months ended June 30, 2021 June 30, 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 365 $ 329 Right-of-use assets obtained in exchange for lease liabilities: $ - $ -
Lessee, Lease, Balance Sheet Information [Table Text Block]	Balance Sheet Classification June 30, 2021 December 31, 2020 Assets: Operating lease right-of-use asset Other noncurrent assets $ 1,881 $ 2,189 Liabilities: Current operating lease liability Accrued expenses and other current liabilities $ 663 $ 680 Operating lease liability, net of current portion Other noncurrent liabilities 1,243 1,524 Total operating lease liability $ 1,906 $ 2,204 Weighted-average remaining lease term (years) 2.9 3.3 Weighted-average discount rate 4.5 % 4.5 %
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Maturity of Operating Lease Liabilities 2021 363 2022 700 2023 720 2024 279 Total lease payments 2,062 Less: Imputed interest 156 Present value of remaining lease payments $ 1,906

Note 8 - Commitments and Cont_2

Note 8 - Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2021
Notes Tables
Schedule of Product Warranty Liability [Table Text Block]	Six-month period ended June 30, 2021 2020 Accrued warranty obligations – beginning $ 149 $ 195 Accruals for warranties issued 121 59 Settlements made (108 ) (26 ) Accrued warranty obligations – ending $ 162 $ 228

Note 10 - Business Segment In_2

Note 10 - Business Segment Information (Tables)	6 Months Ended
	Jun. 30, 2021
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Battery & Energy Products Communications Systems Corporate Total Revenues $ 22,875 $ 3,895 $ - $ 26,770 Segment contribution 6,016 1,251 (6,176 ) 1,091 Other expense (21 ) (21 ) Income tax provision (248 ) (248 ) Non-controlling interest (11 ) (11 ) Net income attributable to Ultralife $ 811 Battery & Energy Products Communications Systems Corporate Total Revenues $ 24,036 $ 4,524 $ - $ 28,560 Segment contribution 6,026 1,937 (5,669 ) 2,294 Other expense (117 ) (117 ) Income tax provision (499 ) (499 ) Non-controlling interest (20 ) (20 ) Net income attributable to Ultralife $ 1,658 Battery & Energy Products Communications Systems Corporate Total Revenues $ 44,986 $ 7,757 $ - $ 52,743 Segment contribution 11,452 2,793 (12,202 ) 2,043 Other expense (77 ) (77 ) Income tax provision (465 ) (465 ) Non-controlling interest (19 ) (19 ) Net income attributable to Ultralife $ 1,482 Battery & Energy Products Communications Systems Corporate Total Revenues $ 44,797 $ 9,577 $ - $ 54,374 Segment contribution 11,342 3,955 (11,518 ) 3,779 Other expense (209 ) (209 ) Income tax provision (818 ) (818 ) Non-controlling interest (35 ) (35 ) Net income attributable to Ultralife $ 2,717
Schedule of Revenues from External Customers by Business Segment Sector [Table Text Block]	Total Revenue Commercial Government/ Defense Battery & Energy Products $ 22,875 $ 16,011 $ 6,864 Communications Systems 3,895 - 3,895 Total $ 26,770 $ 16,011 $ 10,759 60 % 40 % Total Revenue Commercial Government/ Defense Battery & Energy Products $ 24,036 $ 16,172 $ 7,864 Communications Systems 4,524 - 4,524 Total $ 28,560 $ 16,172 $ 12,388 57 % 43 % Total Revenue Commercial Government/ Defense Battery & Energy Products $ 44,986 $ 30,356 $ 14,630 Communications Systems 7,757 - 7,757 Total $ 52,743 $ 30,356 $ 22,387 58 % 42 % Total Revenue Commercial Government/ Defense Battery & Energy Products $ 44,797 $ 30,974 $ 13,823 Communications Systems 9,577 - 9,577 Total $ 54,374 $ 30,974 $ 23,400 57 % 43 %
Revenue from External Customers by Geographic Areas [Table Text Block]	Total Revenue United States Non-United States Battery & Energy Products $ 22,875 $ 11,813 $ 11,062 Communications Systems 3,895 1,953 1,942 Total $ 26,770 $ 13,766 $ 13,004 51 % 49 % Total Revenue United States Non-United States Battery & Energy Products $ 24,036 $ 14,195 $ 9,841 Communications Systems 4,524 4,224 300 Total $ 28,560 $ 18,419 $ 10,141 64 % 36 % Total Revenue United States Non-United States Battery & Energy Products $ 44,986 $ 24,403 $ 20,583 Communications Systems 7,757 3,421 4,336 Total $ 52,743 $ 27,824 $ 24,919 53 % 47 % Total Revenue United States Non-United States Battery & Energy Products $ 44,797 $ 25,479 $ 19,318 Communications Systems 9,577 8,577 1,000 Total $ 54,374 $ 34,056 $ 20,318 63 % 37 %

Note 2 - Debt (Details Textual)

Note 2 - Debt (Details Textual) $ in Thousands	May 01, 2019USD ($)	Dec. 31, 2020USD ($)	Jun. 30, 2021USD ($)	May 31, 2019
Term Loan Facility [Member]
Debt Instrument, Number of Monthly Payment				60
Amended Credit Agreement [Member]
Debt Issuance Costs, Gross			$ 61
Repayments of Long-term Debt, Total		$ 4,200
Amended Credit Agreement [Member] | Revolving Credit Facility [Member]
Long-term Line of Credit, Total			0
Minimum Fixed Charge Coverage Ratio	1.15
Maximum Consolidated Senior Leverage Ratio	2.5
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.10%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.20%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	1.85%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	2.15%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	0.00%
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Base Rate [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	(0.50%)
Term Loan Facility [Member] | Revolving Credit Facility [Member]
Secured Debt, Total			$ 685
KeyBank [Member] | Amended Credit Agreement [Member] | Term Loan Facility [Member]
Debt Instrument, Term (Year)	5 years
Debt Instrument, Face Amount	$ 8,000
KeyBank [Member] | Amended Credit Agreement [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	30,000
Line Of Credit Facility Maximum Borrowing Capacity Contingent On Bank Approval	$ 50,000

Note 3 - Earnings Per Share (De

Note 3 - Earnings Per Share (Details Textual) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Dilutive Securities Included in Computation of Earnings Per Share Amount Stock Option (in shares)	906,404	866,910	659,488	866,910
Dilutive Securities Included in Computation of Earnings Per Share Amount Restricted Stock (in shares)	14,164	19,165	14,164	19,165
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total (in shares)	240,259	250,561	197,848	234,532
Share-based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	414,916	896,167	414,916	896,167

Note 4 - Supplemental Balance_3

Note 4 - Supplemental Balance Sheet Information (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Restricted Cash and Cash Equivalents, Total	$ 88	$ 91
NETHERLANDS
Restricted Cash and Cash Equivalents, Total	$ 88	$ 91

Note 4 - Supplemental Balance_4

Note 4 - Supplemental Balance Sheet Information - Cash and Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Cash	$ 15,740	$ 10,562
Restricted cash	88	91
Total	$ 15,828	$ 10,653	$ 8,389	$ 7,405

Note 4 - Supplemental Balance_5

Note 4 - Supplemental Balance Sheet Information - Components of Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Raw materials	$ 16,817	$ 17,277
Work in process	3,117	3,411
Finished goods	7,480	7,505
Total	$ 27,414	$ 28,193

Note 4 - Supplemental Balance_6

Note 4 - Supplemental Balance Sheet Information - Components of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Property, plant and equipment, gross	$ 89,430		$ 89,430		$ 88,070
Finished goods	7,480		7,480		7,505
Less: Accumulated depreciation	(66,710)		(66,710)		(65,220)
Property, plant and equipment, net	22,720		22,720		22,850
Depreciation	730	$ 582	1,460	$ 1,161
Land [Member]
Property, plant and equipment, gross	1,273		1,273		1,273
Building and Building Improvements [Member]
Property, plant and equipment, gross	15,407		15,407		15,393
Machinery and Equipment [Member]
Property, plant and equipment, gross	62,109		62,109		61,048
Furniture and Fixtures [Member]
Property, plant and equipment, gross	2,328		2,328		2,235
Computer Equipment [Member]
Finished goods	7,124		7,124		6,894
Construction in Progress [Member]
Finished goods	$ 1,189		$ 1,189		$ 1,227

Note 4 - Supplemental Balance_7

Note 4 - Supplemental Balance Sheet Information - Summary of Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)
Goodwill balance	$ 27,018
Effect of foreign currency translation	97
Goodwill balance	27,115
Battery & Energy Products Segment [Member]
Goodwill balance	15,525
Effect of foreign currency translation	97
Goodwill balance	15,622
Communications Systems Segment [Member]
Goodwill balance	11,493
Effect of foreign currency translation	0
Goodwill balance	$ 11,493

Note 4 - Supplemental Balance_8

Note 4 - Supplemental Balance Sheet Information - Composition of Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Cost	$ 20,098	$ 20,039
Accumulated Amortization	11,162	10,830
Net	8,936	9,209
Trademarks [Member]
Cost	3,412	3,410
Accumulated Amortization	0	0
Net	3,412	3,410
Customer Relationships [Member]
Cost	9,207	9,171
Accumulated Amortization	5,313	5,115
Net	3,894	4,056
Patented Technology [Member]
Cost	5,572	5,557
Accumulated Amortization	5,087	5,014
Net	485	543
Distributor Relationships [Member]
Cost	377	377
Accumulated Amortization	377	377
Net	0	0
Trade Names [Member]
Cost	1,530	1,524
Accumulated Amortization	385	324
Net	$ 1,145	$ 1,200

Note 4 - Supplemental Balance_9

Note 4 - Supplemental Balance Sheet Information - Amortization of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Amortization of intangible assets	$ 156	$ 146	$ 310	$ 295
Research and Development Expense [Member]
Amortization of intangible assets	33	30	66	61
Selling, General and Administrative Expenses [Member]
Amortization of intangible assets	$ 123	$ 116	$ 244	$ 234

Note 5 - Stock-based Compensa_3

Note 5 - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended			3 Months Ended		6 Months Ended
	Oct. 31, 2020	Apr. 30, 2019	Jan. 31, 2018	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Proceeds from Stock Options Exercised				$ 283	$ 47	$ 314	$ 76
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total				296		$ 296
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)						10 months 24 days
Restricted Stock [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total				$ 37		$ 37
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)						1 year 6 months
Restricted Stock [Member] | The 2014 Long-term Incentive Plan [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares)	5,000	20,000	17,500
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 6.08	$ 11.12	$ 7.16
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			3 years

Note 5 - Stock-based Compensa_4

Note 5 - Stock-based Compensation - Non-cash Stock Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Stock-based comepensation expense	$ 186	$ 304	$ 370	$ 534
Share-based Payment Arrangement, Option [Member]
Stock-based comepensation expense	174	278	337	470
Restricted Stock [Member]
Stock-based comepensation expense	$ 12	$ 26	$ 33	$ 64

Note 5 - Stock-based Compensa_5

Note 5 - Stock-based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2021
Outstanding at January 1, 2021 (in shares)	1,217,163
Outstanding at January 1, 2021, weighted average exercise price (in dollars per share)	$ 6.50
Granted (in shares)	0
Granted, weighted average exercise price (in dollars per share)	$ 0
Exercised (in shares)	(128,096)
Exercised, weighted average exercise price (in dollars per share)	$ 4.60
Forfeited or expired (in shares)	(14,663)
Forfeited or expired, weighted average exercise price (in dollars per share)	$ 7.07
Outstanding at June 30, 2021 (in shares)	1,074,404
Outstanding at March 31, 2021, weighted average exercise price (in dollars per share)	$ 6.72
Outstanding at March 31, 2021, weighted average remaining contractual term (Year)	3 years 9 months 10 days
Outstanding at March 31, 2021, aggregate intrinsic value	$ 2,037
Vested and expected to vest at June 30, 2021 (in shares)	998,941
Options vested and expected to vest, weighted average exercise price (in dollars per share)	$ 6.66
Options vested and expected to vest, weighted average remaining contractual term (Year)	3 years 7 months 28 days
Options vested and expected to vest, aggregate intrinsic value	$ 1,963
Exercisable at June 30, 2021 (in shares)	744,455
Exercisable at March 31, 2021, weighted average exercise price (in dollars per share)	$ 6.42
Exercisable at March 31, 2021, weighted average remaining contractual term (Year)	3 years 18 days
Exercisable at March 31, 2021, aggregate intrinsic value	$ 1,710

Note 6 - Income Taxes (Details

Note 6 - Income Taxes (Details Textual) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Effective Income Tax Rate Reconciliation, Percent, Total	23.70%	22.90%
Unrecognized Tax Benefits, Ending Balance	$ 0		$ 0
General Business Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount			2,070
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards, Total			$ 47,755,000
Open Tax Year	2001 2002 2005 2006 2007 2011 2012 2013 2014 2015
Foreign Tax Authority [Member]
Deferred Tax Assets, Valuation Allowance, Total	$ 0
Open Tax Year	2010 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	$ 11,000,000
State and Local Jurisdiction [Member]
Open Tax Year	2001 2002 2005 2006 2007 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Note 7 - Operating Leases (Deta

Note 7 - Operating Leases (Details Textual)	Jun. 30, 2021
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	3 years

Note 7 - Operating Leases - Lea

Note 7 - Operating Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating lease cost	$ 189	$ 168	$ 376	$ 336
Variable lease cost	13	18	32	36
Total lease cost	$ 202	$ 186	$ 408	$ 372

Note 7 - Operating Leases - Sup

Note 7 - Operating Leases - Supplement Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating cash flows from operating leases	$ 365	$ 329
Right-of-use assets obtained in exchange for lease liabilities:	$ 0	$ 0

Note 7 - Operating Leases - S_2

Note 7 - Operating Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Weighted-average remaining lease term (years) (Year)	2 years 10 months 24 days	3 years 3 months 18 days
Weighted-average discount rate	4.50%	4.50%
Other Noncurrent Assets [Member]
Operating lease right-of-use asset	$ 1,881	$ 2,189
Accrued Expenses and Other Current Liabilities [Member]
Current operating lease liability	663	680
Other Noncurrent Liabilities [Member]
Operating lease liability, net of current portion	1,243	1,524
Accrued Expenses and Other Current Liabilites and Other Noncurrent Liabilities [Member]
Total operating lease liability	$ 1,906	$ 2,204

Note 7 - Operating Leases - Fut

Note 7 - Operating Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
2021	$ 363
2022	700
2023	720
2024	279
Total lease payments	2,062
Less: Imputed interest	156
Accrued Expenses and Other Current Liabilites and Other Noncurrent Liabilities [Member]
Present value of remaining lease payments	$ 1,906	$ 2,204

Note 8 - Commitments and Cont_3

Note 8 - Commitments and Contingencies (Details Textual) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)
Long-term Purchase Commitment, Amount	$ 1,001

Note 8 - Commitments and Cont_4

Note 8 - Commitments and Contingencies - Changes in Produce Warranty Liability (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Accrued warranty obligations – beginning	$ 149	$ 195
Accruals for warranties issued	121	59
Settlements made	(108)	(26)
Accrued warranty obligations – ending	$ 162	$ 228

Note 10 - Business Segment In_3

Note 10 - Business Segment Information (Details Textual)	6 Months Ended
	Jun. 30, 2021
Number of Operating Segments	2

Note 10 - Business Segment In_4

Note 10 - Business Segment Information - Segment Activity (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues	[1]	$ 26,770	$ 28,560	$ 52,743	$ 54,374
Segment contribution		1,091	2,294	2,043	3,779
Other expense		(21)	(117)	(77)	(209)
Income tax provision		(248)	(499)	(465)	(818)
Non-controlling interest		(11)	(20)	(19)	(35)
Net income attributable to Ultralife		811	1,658	1,482	2,717
Battery & Energy Products Segment [Member]
Revenues	[1]	22,875	24,036	44,986	44,797
Segment contribution		6,016	6,026	11,452	11,342
Communications Systems Segment [Member]
Revenues	[1]	3,895	4,524	7,757	9,577
Segment contribution		1,251	1,937	2,793	3,955
Corporate Segment [Member]
Revenues		0	0	0	0
Segment contribution		(6,176)	(5,669)	(12,202)	(11,518)
Other expense		(21)	(117)	(77)	(209)
Income tax provision		(248)	(499)	(465)	(818)
Non-controlling interest		$ (11)	$ (20)	$ (19)	$ (35)
[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_5

Note 10 - Business Segment Information - Revenue by Business Segment Sector (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues	[1]	$ 26,770	$ 28,560	$ 52,743	$ 54,374
Commercial [Member]
Revenues		$ 16,011	$ 16,172	$ 30,356	$ 30,974
Revenue, percentage		60.00%	57.00%	58.00%	57.00%
Government & Defense [Member]
Revenues		$ 10,759	$ 12,388	$ 22,387	$ 23,400
Revenue, percentage		40.00%	43.00%	42.00%	43.00%
Battery & Energy Products Segment [Member]
Revenues	[1]	$ 22,875	$ 24,036	$ 44,986	$ 44,797
Battery & Energy Products Segment [Member] | Commercial [Member]
Revenues		16,011	16,172	30,356	30,974
Battery & Energy Products Segment [Member] | Government & Defense [Member]
Revenues		6,864	7,864	14,630	13,823
Communications Systems Segment [Member]
Revenues	[1]	3,895	4,524	7,757	9,577
Communications Systems Segment [Member] | Commercial [Member]
Revenues		0	0	0	0
Communications Systems Segment [Member] | Government & Defense [Member]
Revenues		$ 3,895	$ 4,524	$ 7,757	$ 9,577
[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		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues	[1]	$ 26,770	$ 28,560	$ 52,743	$ 54,374
UNITED STATES
Revenues	[1]	$ 13,766	$ 18,419	$ 27,824	$ 34,056
Revenue, percentage	[1]	51.00%	64.00%	53.00%	63.00%
Non-US [Member]
Revenues	[1]	$ 13,004	$ 10,141	$ 24,919	$ 20,318
Revenue, percentage	[1]	49.00%	36.00%	47.00%	37.00%
Battery & Energy Products Segment [Member]
Revenues	[1]	$ 22,875	$ 24,036	$ 44,986	$ 44,797
Battery & Energy Products Segment [Member] | UNITED STATES
Revenues	[1]	11,813	14,195	24,403	25,479
Battery & Energy Products Segment [Member] | Non-US [Member]
Revenues	[1]	11,062	9,841	20,583	19,318
Communications Systems Segment [Member]
Revenues	[1]	3,895	4,524	7,757	9,577
Communications Systems Segment [Member] | UNITED STATES
Revenues	[1]	1,953	4,224	3,421	8,577
Communications Systems Segment [Member] | Non-US [Member]
Revenues	[1]	$ 1,942	$ 300	$ 4,336	$ 1,000
[1]	Sales classified to U.S. include shipments to U.S.-based prime contractors which in some cases may serve non-U.S. projects.