Perma-Fix Environmental Services (PESI) 10-Q 13 Nov 24 2024 Q3 Quarterly report Financial data

Cover

Cover - $ / shares	9 Months Ended
	Sep. 30, 2024	Nov. 01, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2024
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2024
Current Fiscal Year End Date	--12-31
Entity File Number	001-11596
Entity Registrant Name	PERMA FIX ENVIRONMENTAL SERVICES, INC
Entity Central Index Key	0000891532
Entity Tax Identification Number	58-1954497
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	8302 Dunwoody Place
Entity Address, Address Line Two	Suite 250
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30350
City Area Code	(770)
Local Phone Number	587-9898
Title of 12(b) Security	Common Stock, $.001 Par Value
Trading Symbol	PESI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		15,827,977
Entity Listing, Par Value Per Share	$ 0.001

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash		$ 10,567	$ 7,500
Accounts receivable, net of allowance for credit losses of $21 and $30, respectively		8,741	9,722
Unbilled receivables		7,277	8,432
Inventories		1,135	1,155
Prepaid and other assets		4,346	3,738
Current assets related to discontinued operations		12	13
Total current assets		32,078	30,560
Property and equipment:
Buildings and land		24,764	24,311
Equipment		23,578	22,809
Vehicles		423	434
Leasehold improvements		8	8
Office furniture and equipment		1,139	1,130
Construction-in-progress		2,170	1,010
Total property and equipment		52,082	49,702
Less accumulated depreciation		(31,689)	(30,693)
Net property and equipment		20,393	19,009
Property and equipment related to discontinued operations	[1]	130	81
Operating lease right-of-use assets		1,778	1,990
Intangibles and other long term assets:
Permits		10,453	9,905
Other intangible assets - net		420	461
Finite risk sinking fund (restricted cash)		12,525	12,074
Deferred tax assets			4,299
Other assets		381	370
Total assets		78,158	78,749
Current liabilities:
Accounts payable		7,675	9,582
Accrued expenses		6,320	6,560
Disposal/transportation accrual		1,811	1,198
Deferred revenue		5,398	6,815
Accrued closure costs - current		40	79
Current portion of long-term debt		554	773
Current portion of operating lease liabilities		320	380
Current portion of finance lease liabilities		285	291
Current liabilities related to discontinued operations		251	269
Total current liabilities		22,654	25,947
Accrued closure costs		8,201	8,051
Long-term debt, less current portion		1,910	1,975
Long-term operating lease liabilities, less current portion		1,521	1,670
Long-term finance lease liabilities, less current portion		564	776
Long-term liabilities related to discontinued operations		942	953
Total long-term liabilities		13,138	13,425
Total liabilities		35,792	39,372
Commitments and Contingencies (Note 9 )
Stockholders’ Equity:
Preferred Stock, $.001 par value; 2,000,000 shares authorized, no shares issued and outstanding
Common Stock, $.001 par value; 30,000,000 shares authorized; 15,817,046 and 13,654,201 shares issued, respectively; 15,809,404 and 13,646,559 shares outstanding, respectively		16	14
Additional paid-in capital		136,047	116,502
Accumulated deficit		(93,441)	(76,951)
Accumulated other comprehensive loss		(168)	(100)
Less Common Stock in treasury, at cost; 7,642 shares		(88)	(88)
Total stockholders’ equity		42,366	39,377
Total liabilities and stockholders’ equity		$ 78,158	$ 78,749
[1]net of accumulated depreciation of $ 10,000

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 21	$ 30
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	15,817,046	13,654,201
Common stock, shares outstanding	15,809,404	13,646,559
Treasury stock, shares	7,642	7,642

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Net revenues	$ 16,812,000	$ 21,877,000	$ 44,415,000	$ 67,016,000
Cost of goods sold	15,478,000	17,328,000	45,007,000	54,942,000
Gross profit	1,334,000	4,549,000	(592,000)	12,074,000
Selling, general and administrative expenses	3,632,000	3,933,000	10,631,000	10,969,000
Research and development	303,000	120,000	872,000	340,000
Loss on disposal of property and equipment			1,000
(Loss) income from operations	(2,601,000)	496,000	(12,096,000)	765,000
Other income (expense):
Interest income	292,000	146,000	679,000	445,000
Interest expense	(121,000)	(89,000)	(346,000)	(189,000)
Interest expense-financing fees	(18,000)	(36,000)	(47,000)	(80,000)
Other	59,000	(17,000)	61,000	(11,000)
(Loss) income from continuing operations before taxes	(2,389,000)	500,000	(11,749,000)	930,000
Income tax expense	6,417,000	254,000	4,300,000	482,000
(Loss) income from continuing operations, net of taxes	(8,806,000)	246,000	(16,049,000)	448,000
(Loss) income from discontinued operations, net of taxes (Note 10)	(173,000)	95,000	(441,000)	(44,000)
Net (loss) income	$ (8,979,000)	$ 341,000	$ (16,490,000)	$ 404,000
Net (loss) income per common share - basic:
Continuing operations - basic	$ (0.56)	$ 0.02	$ (1.09)	$ 0.03
Discontinued operations - basic	(0.01)	0.01	(0.03)
Net (loss) income per common share - basic	(0.57)	0.03	(1.12)	0.03
Net (loss) income per common share - diluted:
Continuing operations - diluted	(0.56)	0.02	(1.09)	0.03
Discontinued operations - diluted	(0.01)		(0.03)
Net (loss) income per common share - diluted	$ (0.57)	$ 0.02	$ (1.12)	$ 0.03
Number of common shares used in computing net (loss) income per share:
Basic	15,803	13,568	14,695	13,468
Diluted	15,803	13,979	14,695	13,749

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Net (loss) income	$ (8,979)	$ 341	$ (16,490)	$ 404
Other comprehensive income (loss):
Foreign currency translation adjustment	19	(57)	(68)	(4)
Total other comprehensive income (loss)	19	(57)	(68)	(4)
Comprehensive (loss) income	$ (8,960)	$ 284	$ (16,558)	$ 400

Condensed Consolidated Statem_3

Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Common Stock Held in Treasury [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2022	$ 13	$ 115,209	$ (88)	$ (165)	$ (77,436)	$ 37,533
Balance, shares at Dec. 31, 2022	13,332,398
Net Income (loss)					(411)	(411)
Foreign currency translation				7		7
Issuance of Common Stock for services		118				118
Issuance of Common Stock for services, shares	33,319
Issuance of Common Stock upon exercise of options		7				7
Issuance of Common Stock upon exercise of options, shares	31,719
Stock-Based Compensation		118				118
Balance at Mar. 31, 2023	$ 13	115,452	(88)	(158)	(77,847)	37,372
Balance, shares at Mar. 31, 2023	13,397,436
Balance at Dec. 31, 2022	$ 13	115,209	(88)	(165)	(77,436)	37,533
Balance, shares at Dec. 31, 2022	13,332,398
Net Income (loss)						404
Foreign currency translation						(4)
Balance at Sep. 30, 2023	$ 14	116,106	(88)	(169)	(77,032)	38,831
Balance, shares at Sep. 30, 2023	13,588,933
Balance at Mar. 31, 2023	$ 13	115,452	(88)	(158)	(77,847)	37,372
Balance, shares at Mar. 31, 2023	13,397,436
Net Income (loss)					474	474
Foreign currency translation				46		46
Issuance of Common Stock for services		119				119
Issuance of Common Stock for services, shares	10,171
Issuance of Common Stock upon exercise of options	$ 1	93				94
Issuance of Common Stock upon exercise of options, shares	155,136
Stock-Based Compensation		125				125
Balance at Jun. 30, 2023	$ 14	115,789	(88)	(112)	(77,373)	38,230
Balance, shares at Jun. 30, 2023	13,562,743
Net Income (loss)					341	341
Foreign currency translation				(57)		(57)
Issuance of Common Stock for services		119				119
Issuance of Common Stock for services, shares	10,712
Issuance of Common Stock upon exercise of options		49				49
Issuance of Common Stock upon exercise of options, shares	15,478
Stock-Based Compensation		149				149
Balance at Sep. 30, 2023	$ 14	116,106	(88)	(169)	(77,032)	38,831
Balance, shares at Sep. 30, 2023	13,588,933
Balance at Dec. 31, 2023	$ 14	116,502	(88)	(100)	(76,951)	39,377
Balance, shares at Dec. 31, 2023	13,654,201
Net Income (loss)					(3,560)	(3,560)
Foreign currency translation				(56)		(56)
Issuance of Common Stock for services		118				118
Issuance of Common Stock for services, shares	14,963
Issuance of Common Stock upon exercise of options		104				104
Issuance of Common Stock upon exercise of options, shares	31,416
Issuance of Common Stock upon exercise of warrant		105				105
Issuance of Common Stock upon exercise of warrant, shares	30,000
Stock-Based Compensation		152				152
Balance at Mar. 31, 2024	$ 14	116,981	(88)	(156)	(80,511)	36,240
Balance, shares at Mar. 31, 2024	13,730,580
Balance at Dec. 31, 2023	$ 14	116,502	(88)	(100)	(76,951)	39,377
Balance, shares at Dec. 31, 2023	13,654,201
Net Income (loss)						(16,490)
Foreign currency translation						(68)
Balance at Sep. 30, 2024	$ 16	136,047	(88)	(168)	(93,441)	42,366
Balance, shares at Sep. 30, 2024	15,817,046
Balance at Mar. 31, 2024	$ 14	116,981	(88)	(156)	(80,511)	36,240
Balance, shares at Mar. 31, 2024	13,730,580
Net Income (loss)					(3,951)	(3,951)
Foreign currency translation				(31)		(31)
Issuance of Common Stock for services		120				120
Issuance of Common Stock for services, shares	9,965
Issuance of Common Stock upon exercise of options		9				9
Issuance of Common Stock upon exercise of options, shares	4,201
Stock-Based Compensation		132				132
Sale of Common Stock, net of offering costs (Note 14)	$ 2	18,113				18,115
Sale of Common Stock, net of offering costs (Note 14), shares	2,051,282
Issuance of warrants from sale of Common Stock (Note 14)		331				331
Balance at Jun. 30, 2024	$ 16	135,686	(88)	(187)	(84,462)	50,965
Balance, shares at Jun. 30, 2024	15,796,028
Net Income (loss)					(8,979)	(8,979)
Foreign currency translation				19		19
Issuance of Common Stock for services		123				123
Issuance of Common Stock for services, shares	12,218
Issuance of Common Stock upon exercise of options		46				46
Issuance of Common Stock upon exercise of options, shares	8,800
Stock-Based Compensation		182				182
Adjustment of offering costs from sale of Common Stock (Note 14)		10				10
Balance at Sep. 30, 2024	$ 16	$ 136,047	$ (88)	$ (168)	$ (93,441)	$ 42,366
Balance, shares at Sep. 30, 2024	15,817,046

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net (loss) income	$ (16,490,000)	$ 404,000
Less: Loss from discontinued operations, net of taxes (Note 10)	(441,000)	(44,000)
(Loss) income from continuing operations, net of taxes	(16,049,000)	448,000
Adjustments to reconcile (loss) income from continuing operations to cash used in operating activities:
Depreciation and amortization	1,295,000	2,124,000
Amortization of debt issuance costs	47,000	80,000
Deferred tax expense	4,300,000	482,000
(Recovery of) provision for credit losses on accounts receivable	(9,000)	56,000
Loss on disposal of property and equipment	1,000
Issuance of Common Stock for services	361,000	356,000
Stock-based compensation	466,000	392,000
Changes in operating assets and liabilities of continuing operations
Accounts receivable	990,000	(6,034,000)
Unbilled receivables	1,155,000	(3,274,000)
Prepaid expenses, inventories and other assets	2,277,000	3,696,000
Accounts payable, accrued expenses and unearned revenue	(5,805,000)	2,175,000
Cash (used in) provided by continuing operations	(10,971,000)	501,000
Cash used in discontinued operations	(468,000)	(478,000)
Cash used in operating activities	(11,439,000)	23,000
Cash flows from investing activities:
Purchases of property and equipment	(2,224,000)	(1,386,000)
Addition to permits and other intangible assets	(577,000)	(49,000)
Proceeds from sale of property and equipment	1,000
Cash used in continuing operations	(2,800,000)	(1,435,000)
Cash used in discontinued operations	(49,000)
Cash used in investing activities	(2,849,000)	(1,435,000)
Cash flows from financing activities:
Repayments of revolving credit borrowings	(78,313,000)	(63,295,000)
Borrowing on revolving credit	78,313,000	63,295,000
Proceeds from long term debt		2,500,000
Proceeds from sale of Common Stock, net of offering costs paid (Note 14)	18,495,000
Principal repayments of finance lease liabilities	(218,000)	(135,000)
Principal repayments of long term debt	(675,000)	(450,000)
Payment of debt issuance costs	(61,000)	(175,000)
Proceeds from issuance of Common Stock upon exercise of options/warrant	264,000	150,000
Cash provided by financing activities of continuing operations	17,805,000	1,890,000
Effect of exchange rate changes on cash	1,000
Increase in cash and finite risk sinking fund (restricted cash)	3,518,000	478,000
Cash and finite risk sinking fund (restricted cash) at beginning of period	19,574,000	13,436,000
Cash and finite risk sinking fund (restricted cash) at end of period	23,092,000	13,914,000
Supplemental disclosure:
Interest paid	349,000	172,000
Income taxes paid	50,000
Non-cash financing activities:
Equipment/property purchase subject to finance	$ 406,000	$ 309,000

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2024
Accounting Policies [Abstract]
Basis of Presentation	1. Basis of Presentation The condensed consolidated financial statements included herein have been prepared by the Company (which may be referred to as we, us or our), without an audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the “Commission”). Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted pursuant to such rules and regulations, although the Company believes the disclosures which are made are adequate to make the information presented not misleading. Further, the condensed consolidated financial statements reflect, in the opinion of management, all adjustments (which include only normal recurring adjustments) necessary to present fairly the financial position and results of operations as of and for the periods indicated. The results of operations for the nine months ended September 30, 2024, are not necessarily indicative of results to be expected for the fiscal year ending December 31, 2024. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K as of and for the year ended December 31, 2023. The condensed consolidated financial statements include the accounts of our wholly-owned subsidiaries. Reclassification Certain amounts in the condensed consolidated statement of cash flows for the prior period have been reclassified to conform with current presentation. The reclassifications had no effect on the condensed consolidated statements of operations, balance sheets and stockholders’ equity.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Our accounting policies are as set forth in the notes to the December 31, 2023, consolidated financial statements referred to above. Recently Issued Accounting Standards – Not Yet Adopted In August 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-05, “Business Combinations—Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement.” ASU 2023-05 applies to the formation of a “joint venture” or a “corporate joint venture” and requires a joint venture to initially measure all contributions received upon its formation at fair value. The guidance does not impact accounting by the venturers. The new guidance is applicable to joint venture entities with a formation date on or after January 1, 2025, on a prospective basis. The Company is currently evaluating the impact of this ASU on its consolidated financial statements. In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures,” which expands reportable segment disclosure requirements by requiring disclosures of significant reportable segment expenses that are regularly provided to the chief operating decision maker (“CODM”) and included within each reported measure of a segment’s profit or loss. The ASU also requires disclosure of the title and position of the individual identified as the CODM and an explanation of how the CODM uses the reported measures of a segment’s profit or loss in assessing segment performance and deciding how to allocate resources. Additionally, ASU 2023-07 requires all segment profit or loss and assets disclosures to be provided on an annual and interim basis. The amendments in this ASU are required to be adopted for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted, and should be applied on a retrospective basis. ASU 2023-07 will be effective for the Company’s financial statements for the year ended December 31, 2024. This ASU will not have impact on the Company’s consolidated financial condition or results of operations. The Company is evaluating the impact to the related segment reporting disclosures. In December 2023, the FASB issued ASU No. 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which modifies the rules on income tax disclosures to require entities to disclose (1) specific categories in the rate reconciliation, (2) the income or loss from continuing operations before income tax expense or benefit (separated between domestic and foreign) and (3) income tax expense or benefit from continuing operations (separated by federal, state and foreign). ASU 2023-09 also requires entities to disclose their income tax payments to international, federal, state and local jurisdictions, among other changes. The guidance is effective for annual periods beginning after December 15, 2024. ASU 2023-09 should be applied on a prospective basis, but retrospective application is permitted. This ASU will not have impact on the Company’s consolidated financial condition or results of operations. The Company is evaluating the impact to its income taxes reporting disclosures.

Revenue

Revenue	9 Months Ended
	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
Revenue	3. Revenue Disaggregation of Revenue In general, the Company’s business segmentation is aligned according to the nature and economic characteristics of our services and provides meaningful disaggregation of each business segment’s results of operations. The nature of the Company’s performance obligations within our Treatment and Services Segments result in the recognition of our revenue primarily over time. The following tables present further disaggregation of our revenues by different categories for our Services and Treatment Segments: Schedule of Disaggregation of Revenue Revenue by Contract Type (In thousands) Three Months Ended Three Months Ended September 30, 2024 September 30, 2023 Treatment Services Total Treatment Services Total Fixed price $ 9,064 $ 6,396 $ 15,460 $ 10,795 $ 10,188 $ 20,983 Time and materials — 1,352 1,352 — 894 894 Total $ 9,064 $ 7,748 $ 16,812 $ 10,795 $ 11,082 $ 21,877 Revenue by Contract Type (In thousands) Nine Months Ended Nine Months Ended September 30, 2024 September 30, 2023 Treatment Services Total Treatment Services Total Fixed price $ 26,116 $ 15,405 $ 41,521 $ 33,223 $ 29,995 $ 63,218 Time and materials — 2,894 2,894 — 3,798 3,798 Total $ 26,116 $ 18,299 $ 44,415 $ 33,223 $ 33,793 $ 67,016 Revenue by generator (In thousands) Three Months Ended Three Months Ended September 30, 2024 September 30, 2023 Treatment Services Total Treatment Services Total Domestic government $ 6,578 $ 7,346 $ 13,924 $ 7,095 $ 8,444 $ 15,539 Domestic commercial 2,229 312 2,541 3,450 2,170 5,620 Foreign government — 65 65 250 445 695 Foreign commercial 257 25 282 — 23 23 Total $ 9,064 $ 7,748 $ 16,812 $ 10,795 $ 11,082 $ 21,877 Revenue by generator (In thousands) Nine Months Ended Nine Months Ended September 30, 2024 September 30, 2023 Treatment Services Total Treatment Services Total Domestic government $ 18,997 $ 17,129 $ 36,126 $ 24,160 $ 29,603 $ 53,763 Domestic commercial 6,045 867 6,912 7,925 3,509 11,434 Foreign government 1 232 233 1,002 615 1,617 Foreign commercial 1,073 71 1,144 136 66 202 Total $ 26,116 $ 18,299 $ 44,415 $ 33,223 $ 33,793 $ 67,016 Contract Balances The timing of revenue recognition and billings can result in unbilled receivables (contract assets) or deferred revenue (contract liabilities). The following table represents changes in our contract asset and contract liabilities balances for the periods noted: The reduction in deferred revenue from December 31, 2023, to September 30, 2024, was primarily due to the substantial completion of a waste treatment project for a certain customer in which a prepayment was made to the Company by the customer in 2023. Schedule of Contract Balances (In thousands) September 30, 2024 December 31, 2023 Change ($) Change (%) Contract assets Unbilled receivables - current $ 7,277 $ 8,432 $ (1,155 ) -14 % Contract liabilities Deferred revenue $ 5,398 $ 6,815 $ (1,417 ) -20.8 % (In thousands) September 30, 2023 December 31, 2022 Change ($) Change (%) Contract assets Unbilled receivables - current $ 9,336 $ 6,062 $ 3,274 54.0 % Contract liabilities Deferred revenue $ 7,765 $ 4,813 $ 2,952 61.3 % During the three and nine months ended September 30, 2024, the Company recognized revenue of $ 677,000 5,596,000 842,000 6,289,000 Accounts Receivable The following table represents changes in accounts receivable, net of credit losses, for the periods noted: Schedule of Changes in Accounts Receivable, Net of Credit Losses (In thousands) September 30, 2024 December 31, 2023 Change ($) Change (%) Accounts Receivable (net) $ 8,741 $ 9,722 $ (981 ) -10.1 % September 30, 2023 December 31, 2022 Change ($) Change (%) Accounts Receivable (net) $ 15,342 $ 9,364 $ 5,978 63.8 % The decrease from December 31, 2023, to September 30, 2024, was primarily due to reduced billing from decreased revenues. The decrease in accounts receivable was also attributed to the collection by May 2024 of outstanding accounts receivable for work performed for a certain Canadian project for which a settlement agreement was reached, with collection subject to meeting certain conditions/terms. (see “Note 11 - Perma-Fix Canada Inc. (“PF Canada”)”) for a discussion on the collection of the receivables). Remaining Performance Obligations The Company applies the practical expedient in Accounting Standards Codification (“ASC”) 606-10-50-14 and does not disclose information about remaining performance obligations that have original expected durations of one year or less. Within our Services Segment, there are service contracts which provide that the Company has a right to consideration from a customer in an amount that corresponds directly with the value to the customer of our performance completed to date. For those contracts, the Company has utilized the practical expedient in ASC 606-10-55-18, which allows the Company to recognize revenue in the amount for which we have the right to invoice; accordingly, the Company does not disclose the value of remaining performance obligations for those contracts. The Company’s contracts and subcontracts relating to activities at governmental sites generally allow for termination for convenience at any time at the government’s option without payment of a substantial penalty. The Company does not disclose remaining performance obligations on these contracts.

Leases

Leases	9 Months Ended
	Sep. 30, 2024
Leases
Leases	4. Leases At the inception of an arrangement, the Company determines if an arrangement is, or contains, a lease based on facts and circumstances present in that arrangement. Lease classifications, recognition, and measurement are then determined at the lease commencement date. The Company’s operating lease right-of-use (“ROU”) assets and operating lease liabilities include primarily leases for office and warehouse spaces used to conduct our business. The Company’s operating leases also previously included the lease of a building with land where its Oak Ridge Environmental Waste Operations (“EWOC”) facility conducts its waste treatment operations. In July 2024, the Company completed the purchase of the EWOC property under the lease purchase option (see “Note 8 – Long Term Debt” for a discussion of the purchase of this property by the Company). Finance leases consist primarily of processing equipment and vehicles/trucks used by our facilities’ operations. The components of lease cost for the Company’s leases for the three and nine months ended September 30, 2024, and 2023 were as follows (in thousands): Schedule of Components of Lease Cost Three Months Ended Nine Months Ended September 30, September 30, 2024 2023 2024 2023 Operating Leases: Lease cost $ 129 $ 157 $ 420 $ 470 Finance Leases: Amortization of ROU assets 65 39 196 115 Interest on lease liability 20 9 63 22 Finance lease 85 48 259 137 Short-term lease rent expense 1 — 3 1 Total lease cost $ 215 $ 205 $ 682 $ 608 The weighted average remaining lease term and the weighted average discount rate for operating and finance leases at September 30, 2024, were: Schedule of Weighted Average Lease Operating Leases Finance Leases Weighted average remaining lease terms (years) 4.9 3.9 Weighted average discount rate 7.7 % 9.0 % The weighted average remaining lease term and the weighted average discount rate for operating and finance leases at September 30, 2023, were: Operating Leases Finance Leases Weighted average remaining lease terms (years) 5.7 3.2 Weighted average discount rate 7.5 % 7.0 % The following table reconciles the undiscounted cash flows for the operating and finance leases at September 30, 2024, to the operating and finance lease liabilities recorded on the balance sheet (in thousands): Schedule of Operating and Finance Lease Liability Maturity Operating Leases Finance Leases 2024 $ 108 $ 91 2025 486 345 2026 479 192 2027 447 157 2028 343 134 2029 and thereafter 407 102 Total undiscounted lease payments 2,270 1,021 Less: Imputed interest (429 ) (172 ) Present value of lease payments $ 1,841 $ 849 Current portion of operating lease obligations $ 320 $ — Long-term operating lease obligations, less current portion $ 1,521 $ — Current portion of finance lease obligations $ — $ 285 Long-term finance lease obligations, less current portion $ — $ 564 Supplemental cash flow and other information related to our leases were as follows for the three and nine months ended September 30, 2024, and 2023 (in thousands): Schedule of Supplemental Cash Flow and Other Information Related to Leases Three Months Ended Nine Months Ended September 30, September 30, 2024 2023 2024 2023 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flow used in operating leases $ 119 $ 145 $ 415 $ 435 Operating cash flow used in finance leases $ 20 $ 9 $ 63 $ 22 Financing cash flow used in finance leases $ 72 $ 54 $ 218 $ 135 ROU assets obtained in exchange for lease obligations for: Finance liabilities $ — $ 154 $ — $ 311 Operating liabilities $ — 484 $ 497 $ 484 Reduction to ROU assets resulting from purchase of underlying asset: Operating liabilities 404 — 404 — Reduction to ROU assets resulting from purchase of underlying asset, Operating liabilities 404 — 404 — The reduction in ROU resulted from the purchase of the Company’s property as discussed above (see “Note 8 – Long Term Debt” for a discussion of this purchase).

Intangible Assets

Intangible Assets	9 Months Ended
	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	5. Intangible Assets The following table summarizes information relating to the Company’s definite-lived intangible assets: Schedule of Definite Lived Intangible Assets September 30, 2024 December 31, 2023 Weighted Average Amortization Period Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying (Years) Amount Amortization Amount Amount Amortization Amount Other Intangibles (amount in thousands) Patents 8.3 $ 733 $ (397 ) $ 336 $ 710 $ (387 ) $ 323 Software 3 673 (589 ) 84 667 (529 ) 138 Total $ 1,406 $ (986 ) $ 420 $ 1,377 $ (916 ) $ 461 The intangible assets noted above are amortized on a straight-line basis over their useful lives. The following table summarizes the expected amortization over the next five years for our definite-lived intangible assets: Schedule of Finite Lived Intangible Assets, Future Amortization Expense Amount Year (In thousands) 2024 (Remaining) $ 13 2025 45 2026 40 2027 22 2028 13 Total $ 133 Amortization expense relating to the definite-lived intangible assets as discussed above was $ 22,000 70,000 55,000 165,000

Capital Stock, Stock Plans and

Capital Stock, Stock Plans and Stock-Based Compensation	9 Months Ended
	Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]
Capital Stock, Stock Plans and Stock-Based Compensation	6. Capital Stock, Stock Plans and Stock-Based Compensation The Company has certain stock option plans under which it may award incentive stock options (“ISOs”) and/or non-qualified stock options (“NQSOs”) to employees, officers, outside directors, and outside consultants. On January 18, 2024, the Company granted ISOs to certain employees under the 2017 Stock Option Plan (“2017 Plan”), for the purchase of up to an aggregate of 45,000 .001 six years one-fifth vesting annually over a five-year period 7.75 On July 18, 2024, the Company granted ISOs to certain employees under the 2017 Stock Option Plan, for the purchase of up to an aggregate of 35,500 six years one-fifth vesting annually over a five-year period 10.05 On July 18, 2024, the Company issued a NQSO to each of the Company’s seven reelected outside (non-management) directors for the purchase, under the Company’s 2003 Outside Directors Stock Plan (the “2003 Plan”), of up to 10,000 ten years one-fourth vesting annually over a four-year period 10.20 The following table summarizes stock-based compensation recognized for the three and nine months ended September 30, 2024, and 2023 for our employee and director stock options. Schedule of Share-based Compensation, Allocation of Recognized Period Costs 2024 2023 2024 2023 Three Months Ended Nine Months Ended Stock Options September 30, September 30, 2024 2023 2024 2023 Employee Stock Options $ 96,000 $ 94,000 $ 259,000 $ 273,000 Director Stock Options 86,000 55,000 207,000 119,000 Total $ 182,000 $ 149,000 $ 466,000 $ 392,000 At September 30, 2024, the Company had approximately $ 2,091,000 3.2 The summary of the Company’s stock option plans as of September 30, 2024, and September 30, 2023, and changes during the periods then ended, are presented below. The Company’s plans consist of the 2017 Plan and the 2003 Plan: Schedule of Stock Options Roll Forward Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (years) Aggregate Intrinsic (4) Options outstanding January 1, 2024 994,500 $ 5.57 - Granted 150,500 $ 9.43 Exercised (58,700 ) $ 5.57 $ 306,574 Forfeited (46,400 ) $ 5.93 Options outstanding end of period (1) 1,039,900 $ 6.12 4.8 $ 6,397,354 Options exercisable at September 30, 2024 (2) 386,000 $ 5.31 4.0 $ 2,684,482 Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (years) Aggregate (4) Options outstanding January 1, 2023 1,018,400 $ 5.02 - Granted 365,000 $ 3.19 Exercised (282,400 ) $ 3.70 $ 2,118,892 Forfeited/expired/cancelled (64,500 ) $ 3.67 Options outstanding end of period (2) 1,036,500 $ 5.48 5.1 $ 5,146,126 Options exercisable at September 30, 2023 (3) 302,300 $ 4.91 3.9 $ 1,675,604 (1) Options with exercise prices ranging from $ 3.15 10.20 (2) Options with exercise prices ranging from $ 3.15 9.81 (3) Options with exercise prices ranging from $ 3.15 7.50 (4) The intrinsic value of a stock option is the amount by which the market value of the underlying stock exceeds the exercise price. During the nine months ended September 30, 2024, the Company issued a total of 37,146 363,000 During the nine months ended September 30, 2024, the Company issued an aggregate 14,717 29,000 3.15 7.005 29,700 29,700 3.70 7.005 159,000 During the first quarter of 2024, a remaining warrant issued in connection with a $ 2,500,000 30,000 3.51 105,000

(Loss) Income Per Share

(Loss) Income Per Share	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
(Loss) Income Per Share	7. (Loss) Income Per Share Basic (loss) income per share is calculated based on the weighted-average number of outstanding common shares during the applicable period. Diluted (loss) income per share is based on the weighted-average number of outstanding common shares plus the weighted-average number of potential outstanding common shares. In periods where they are anti-dilutive, such amounts are excluded from the calculations of dilutive earnings per share. The following table reconciles the (loss) income and average share amounts used to compute both basic and diluted (loss) income per share: Schedule of Earnings Per Share 2024 2023 2024 2023 Three Months Ended Nine Months Ended (Amounts in Thousands, Except for Per Share Amounts) September 30, (Unaudited) September 30, (Unaudited) 2024 2023 2024 2023 (Loss) income per common share from continuing operations (Loss) income from continuing operations, net of taxes $ (8,806 ) $ 246 $ (16,049 ) $ 448 Basic (loss) income per share $ (.56 ) $ .02 $ (1.09 ) $ .03 Diluted (loss) income per share $ (.56 ) $ .02 $ (1.09 ) $ .03 (Loss) income per common share from discontinued operations, net of taxes (Loss) income from discontinued operations, net of taxes $ (173 ) $ 95 $ (441 ) $ (44 ) Basic (loss) income per share $ (.01 ) $ .01 $ (.03 ) $ — Diluted loss per share $ (.01 ) $ — $ (.03 ) $ — Net (loss) income per common share Net (loss) income $ (8,979 ) $ 341 $ (16,490 ) $ 404 Basic (loss) income per share $ (.57 ) $ .03 $ (1.12 ) $ .03 Diluted (loss) income per share $ (.57 ) $ .02 $ (1.12 ) $ .03 Weighted average shares outstanding: Basic weighted average shares outstanding 15,803 13,568 14,695 13,468 Add: dilutive effect of stock options — 370 — 244 Add: dilutive effect of warrants — 41 — 37 Diluted weighted average shares outstanding 15,803 13,979 14,695 13,749 Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include: Stock options — — 70 70 Warrant 62 — 62 —

Long Term Debt

Long Term Debt	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
Long Term Debt	8. Long Term Debt Long-term debt consists of the following: Schedule of Long Term Debt (Amounts in Thousands) September 30, 2024 December 31, 2023 Revolving Credit (1) $ — $ — Revolving Credit May 15, 2027 10.5 (1) $ — $ — Term Loan 1 balance due on May 15, 2027 9.5 (1) — 213 Term Loan 2 balance due on May 15, 2027 9.4 (1) 1,958 2,333 Capital Line May 15, 2027 8.8 (1) 279 358 Debt Issuance Costs (184 ) (2) (170 ) (2) Notes Payable 8.10 10.7 (3) 411 14 Total debt 2,464 2,748 Less current portion of long-term debt 554 773 Long-term debt $ 1,910 $ 1,975 (1) Our revolving credit facility is collateralized by our accounts receivable, and our term loans and capital line are collateralized by our property, plant, and equipment. (2) Aggregate unamortized debt issuance costs in connection with the Company’s credit facility, which consists of the revolving credit, Term loan 1, Term loan 2 and Capital Line, as applicable. (3) Includes a promissory note entered into on July 24, 2024, in connection with the purchase of the Company’s EWOC property. See a discussion of this note below which include a variable interest rate provision. Revolving Credit and Term Loan Agreement The Company entered into a Second Amended and Restated Revolving Credit, Term Loan and Security Agreement, dated May 8, 2020, which has since been amended from time to time, with PNC National Association (“PNC” and “lender”), acting as agent and lender (the “Loan Agreement”). The Loan Agreement provides the Company with a credit facility with a maturity date of May 15, 2027 12,500,000 3,950,000 750,000 1,742,000 35,547 2,500,000 41,667 1,000,000 524,000 8,700 Pursuant to the Loan Agreement, payments of annual interest rates are as follows: (i) interest due on the revolving credit is at prime (8.00% at September 30, 2024) plus 2% or Secured Overnight Finance Rate (“SOFR”) (as defined in the Loan Agreement) plus 3.00% plus an SOFR Adjustment applicable for an interest period selected by the Company; (ii) interest due on each Term Loan 1 and the Capital Line was/is at prime plus 2.50% or SOFR plus 3.50% plus an SOFR Adjustment applicable for an interest period selected by the Company; and (iii) interest due on Term Loan 2 is at prime plus 3% or SOFR plus 4.00% plus an SOFR Adjustment applicable for an interest period selected by the Company. SOFR Adjustment rates of 0.10% and 0.15% are applicable for a one-month interest period and three-month period, respectively, that may be selected by the Company. The Company agreed to pay PNC 0.5% of the total financing under the Loan Agreement if the Company pays off its obligations to its lender after July 31, 2024, to and including July 31, 2025. No early termination fee shall apply if the Company pays off its obligations under Loan Agreement after July 31, 2025. On May 8, 2024, the Company entered into an amendment to its Loan Agreement with its lender which provided the following, among other things: ● removed the quarterly fixed charge coverage ratio (“FCCR”) testing requirement for the first and second quarters of 2024; ● reinstated the quarterly FCCR testing requirement starting in the third quarter of 2024 and revised the methodology to be used in calculating the FCCR as follows (with no change to the minimum 1.15:1 ratio requirement): FCCR for the third quarter is to be determined based on financial results for the three-months period ending September 30, 2024; FCCR for the fourth quarter is to be determined based on financial results for the six-months period ending December 31, 2024; FCCR for the first quarter of 2025 is to be determined based on financial results for the nine-months period ending March 31, 2025; and FCCR for the second quarter of 2025 and each fiscal quarter thereafter is to be determined based on financial results for a trailing twelve-months period ending basis; ● required maintenance of a daily minimum of $ 2,250,000 3,000,000 ● in the event the Company is able to achieve its minimum quarterly FCCR requirement utilizing its financial results based on a trailing twelve-months period starting with the quarter ending June 30, 2024 (which the Company has not been able to achieve as of September 30, 2024), the maintenance of a daily minimum Liquidity requirement of $ 3,000,000 In connection with the amendment, the Company paid its lender a fee of $ 25,000 At September 30, 2024, the Company had no outstanding borrowing under its revolving credit and its Liquidity under the Credit Facility was approximately $ 13,984,000 The Company’s Credit Facility under its Loan Agreement with PNC contains certain financial covenants, along with customary representations and warranties. A breach of any of these financial covenants, unless waived by PNC, could result in a default under our Credit Facility allowing our lender to immediately require the repayment of all outstanding debt under our Credit Facility and terminate all commitments to extend further credit. The Company was not required to perform testing of its FCCR requirement for the first and second quarters of 2024 pursuant to the amendment dated May 8, 2024, to the Company’s Loan Agreement as discussed above. The Company was also not required to perform testing of its FCCR for the third quarter of 2024 pursuant to an amendment dated November 12, 2024, to the Company’s Loan Agreement, as amended (See “Note 15 – Subsequent Events – Credit Facility” for a discussion of this amendment which removed the testing requirement of the FCCR for the third quarter of 2024, among other things). Otherwise, the Company met all of its other financial covenant requirements in each of the first three quarters of 2024. On July 24, 2024, the Company purchased the property which its EWOC facility operates on pursuant to a Purchase and Sales Agreement dated April 30, 2024, for a purchase price of $ 425,000 63,750 361,250 July 24, 2044 3,100 8.10 3.0 4.0 3.0 1.0

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	9. Commitments and Contingencies Hazardous Waste In connection with our waste management services, the Company processes hazardous, non-hazardous, low-level radioactive and mixed (containing both hazardous and low-level radioactive) waste, which the Company transports to its own, or other, facilities for destruction or disposal. As a result of disposing of hazardous substances, in the event any cleanup is required at the disposal site, the Company could be a potentially responsible party for the costs of the cleanup notwithstanding any absence of fault on our part. Legal Matters In the normal course of conducting our business, the Company may be involved in various litigation. The Company is not a party to any litigation or governmental proceeding which our management believes could result in any judgments or fines against us that would have a material adverse effect on our financial position, liquidity or results of future operations. Tetra Tech EC, Inc. (“Tetra Tech”) During July 2020, Tetra Tech EC, Inc. (“Tetra Tech”) filed a complaint in the United States District Court for the Northern District of California (the “Court”) against CH2M Hill, Inc. (“CH2M”) and four subcontractors of CH2M, including the Company (“Defendants”). The complaint alleges various claims, including a claim for negligence, negligent misrepresentation, equitable indemnification and related business claims against all Defendants related to alleged damages suffered by Tetra Tech in respect of certain draft reports prepared by Defendants at the request of the U.S. Navy as part of an investigation and review of certain whistleblower complaints about Tetra Tech’s environmental restoration at the Hunter’s Point Naval Shipyard in San Francisco. CH2M was hired by the Navy in 2016 to review Tetra Tech’s work. CH2M subcontracted with environmental consulting and cleanup firms Battelle Memorial Institute, Cabrera Services, Inc., SC&A, Inc. and the Company to assist with the review, according to the complaint. The Company’s insurance carrier is providing a defense on our behalf in connection with this lawsuit, subject to a $ 100,000 The majority of Tetra Tech’s claims have been dismissed by the Court. Remaining claims include: (1) intentional interference with contractual relations; and (2) inducing a breach of contract. The Company continues to believe it has no liability exposure to Tetra Tech. Insurance The Company has a 25 28,177,000 23,379,000 12,525,000 12,074,000 3,054,000 2,603,000 153,000 451,000 146,000 356,000 100 Letter of Credits and Bonding Requirements From time to time, the Company is required to post standby letters of credit and various bonds to support contractual obligations to customers and other obligations, including facility closures. At September 30, 2024, the total amount of standby letters of credit outstanding was approximately $ 3,950,000 20,568,000

Discontinued Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2024
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	10. Discontinued Operations The Company’s discontinued operations consist of all our subsidiaries included in our Industrial Segment which encompasses subsidiaries divested in 2011 and earlier, as well as three previously closed locations. The Company’s discontinued operations had net loss $ 173,000 (net of tax expense of $ 79,000 ) and net income of $ 95,000 (net of tax benefits of $ 234,000 ) for the three months ended September 30, 2024, and 2023, respectively, and net losses of $ 441,000 (net of $ 0 44,000 (net of tax benefit of $ 353,000 ) for the nine months ended September 30, 2024 and 2023, respectively. The income and losses (excluding the tax benefits) were primarily due to costs incurred in the administration and continued monitoring/evaluation of our discontinued operations. The Company’s discontinued operations had no revenue for any of the periods noted above. The following table presents the major class of assets of discontinued operations as of September 30, 2024, and December 31, 2023. No assets and liabilities were held for sale at each of the periods noted. Schedule of Disposal Groups, Including Discontinued Operation Balance Sheet September 30, December 31, (Amounts in Thousands) 2024 2023 Current assets Other assets $ 12 $ 13 Total current assets 12 13 Long-term assets Property, plant and equipment, net (1) 130 81 Total long-term assets 130 81 Total assets $ 142 $ 94 Current liabilities Accounts payable $ 96 $ 80 Accrued expenses and other liabilities 154 128 Environmental liabilities 1 61 Total current liabilities 251 269 Long-term liabilities Closure liabilities 176 169 Environmental liabilities 766 784 Total long-term liabilities 942 953 Total liabilities $ 1,193 $ 1,222 (1) net of accumulated depreciation of $ 10,000 On June 1, 2024, our Perma-Fix South Georgia, Inc. (“PFSG”) subsidiary entered into a lease agreement with a tenant leasing a portion of the PFSG property. The lease is for a two-years term and requires monthly payment by the lessee of approximately $ 8,500 8,755

Perma-Fix Canada, Inc. (_PF Can

Perma-Fix Canada, Inc. (“PF Canada”)	9 Months Ended
	Sep. 30, 2024
Perma-fix Canada Inc.
Perma-Fix Canada, Inc. (“PF Canada”)	11. Perma-Fix Canada, Inc. (“PF Canada”) During the fourth quarter of 2021, PF Canada received a Notice of Termination (“NOT”) from Canadian Nuclear Laboratories, LTD. (“CNL”) on a Task Order Agreement (“TOA”) that PF Canada entered into with CNL in May 2019 for remediation work within Ontario, Canada (“Agreement”). The NOT was received after work under the TOA was substantially completed and work under the TOA has since been completed. CNL may terminate the TOA at any time for convenience. At year-end 2023, PF Canada had approximately $ 2,389,000 1,612,000

Operating Segments

Operating Segments	9 Months Ended
	Sep. 30, 2024
Segment Reporting [Abstract]
Operating Segments	12. Operating Segments In accordance with ASC 280, “Segment Reporting”, the Company defines an operating segment as a business activity: (1) from which we may earn revenue and incur expenses; (2) whose operating results are regularly reviewed by the CODM to make decisions about resources to be allocated to the segment and assess its performance; and (3) for which discrete financial information is available. The Company’s CODM generally does not utilize total asset in allocating resources to its operating segments. Our reporting segments are defined below: TREATMENT SEGMENT, which includes: - nuclear, low-level radioactive, mixed waste (containing both hazardous and low-level radioactive constituents), hazardous and non-hazardous waste treatment, processing and disposal services primarily through four uniquely licensed and permitted treatment and storage facilities; and - Research and Development (“R&D”) activities to identify, develop and implement innovative waste processing techniques for problematic waste streams. SERVICES SEGMENT, which includes: - Technical services, which include: ○ professional radiological measurement and site survey of large government and commercial installations using advanced methods, technology and engineering; ○ integrated Occupational Safety and Health services including industrial hygiene (“IH”) assessments; hazardous materials surveys, e.g., exposure monitoring; lead and asbestos management/abatement oversight; indoor air quality evaluations; health risk and exposure assessments; health & safety plan/program development, compliance auditing and training services; and Occupational Safety and Health Administration (“OSHA”) citation assistance; ○ global technical services providing consulting, engineering, project management, waste management, environmental, and decontamination and decommissioning field, technical, and management personnel and services to commercial and government customers; and ○ on-site waste management services to commercial and governmental customers. - Nuclear services, which include: ○ technology-based services including engineering, decontamination and decommissioning (“D&D”), specialty services and construction, logistics, transportation, processing and disposal; ○ remediation of nuclear licensed and federal facilities and the remediation cleanup of nuclear legacy sites. Such services capability includes: project investigation; radiological engineering; partial and total plant D&D; facility decontamination, dismantling, demolition, and planning; site restoration; logistics; transportation; and emergency response; and - A company owned equipment calibration and maintenance laboratory that services, maintains, calibrates, and sources (i.e., rental) health physics, IH and customized nuclear, environmental, and occupational safety and health (“NEOSH”) instrumentation. Our reporting segments exclude our corporate headquarters and our discontinued operations (see “Note 10 – Discontinued Operations”) which do not generate revenues. The table below presents certain financial information of our operating segments for the three and nine months ended September 30, 2024, and 2023 (in thousands). Schedule of Segment Reporting Information Segment Reporting for the Quarter Ended September 30, 2024 (1) Treatment Services Segments Total Corporate (1) Consolidated Total Revenue from external customers $ 9,064 $ 7,748 $ 16,812 $ — $ 16,812 Intercompany revenues 13 23 36 — — Gross profit 410 924 1,334 — 1,334 Research and development 205 34 239 64 303 Interest income 6 — 6 286 292 Interest expense (37 ) (3 ) (40 ) (81 ) (121 ) Interest expense-financing fees — — — (18 ) (18 ) Depreciation and amortization 370 44 414 19 433 Segment loss (4,902 ) (2,294 ) (7,196 ) (1,610 ) (8,806 ) (4) Expenditures for segment assets 1,203 180 1,383 — 1,383 (2) Segment Reporting for the Quarter Ended September 30, 2023 (1) Treatment Services Segments Total Corporate (1) Consolidated Total Revenue from external customers $ 10,795 $ 11,082 $ 21,877 $ — $ 21,877 Intercompany revenues 4 88 92 — — Gross profit 1,494 3,055 4,549 — 4,549 Research and development 102 1 103 17 120 Interest income — — — 146 146 Interest expense (23 ) (1 ) (24 ) (65 ) (89 ) Interest expense-financing fees — — — (36 ) (36 ) Depreciation and amortization 584 88 672 14 686 Segment income (loss) 1,014 1,120 2,134 (1,888 ) 246 Expenditures for segment assets 333 7 340 — 340 (3) Segment Reporting for the Nine Months Ended September 30, 2024 (1) Treatment Services Segments Total Corporate (1) Consolidated Total Revenue from external customers $ 26,116 $ 18,299 $ 44,415 $ — $ 44,415 Intercompany revenues 67 52 119 — — Gross (loss) profit (839 ) 247 (592 ) — (592 ) Research and development 609 87 696 176 872 Interest income 7 — 7 672 679 Interest expense (107 ) (4 ) (111 ) (235 ) (346 ) Interest expense-financing fees — — — (47 ) (47 ) Depreciation and amortization 1,104 133 1,237 58 1,295 Segment loss (7,416 ) (3,713 ) (11,129 ) (4,920 ) (16,049 ) (4) Expenditures for segment assets 1,820 404 2,224 — 2,224 (2) Segment Reporting for the Nine Months Ended September 30, 2023 (1) Treatment Services Segments Total Corporate (1) Consolidated Total Revenue from external customers $ 33,223 $ 33,793 $ 67,016 $ — $ 67,016 Intercompany revenues 234 124 358 — — Gross profit 5,237 6,837 12,074 — 12,074 Research and development 260 11 271 69 340 Interest income — — — 445 445 Interest expense (68 ) (2 ) (70 ) (119 ) (189 ) Interest expense-financing fees — — — (80 ) (80 ) Depreciation and amortization 1,745 337 2,082 42 2,124 Segment income (loss) 2,619 2,933 5,552 (5,104 ) 448 Expenditures for segment assets 1,376 10 1,386 — 1,386 (3) (1) Amounts reflect the activity for corporate headquarters not included in the segment information. (2) Net of financed amount of $ 361,000 406,000 (3) Net of financed amount of $ 152,000 309,000 (4) Includes tax expense recorded in the amount of approximately $ 6,417,000

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	13. Income Taxes The Company uses an estimated annual effective tax rate, which is based on expected annual income, statutory tax rates and tax planning opportunities available in the various jurisdictions in which the Company operates, to determine its quarterly provision for income taxes. The Company records valuation allowances against its net deferred tax assets to the extent it determines it is more likely than not that such assets will not be realized in the future. The Company regularly evaluates the probability that its deferred tax assets will be realized and determines whether valuation allowances or adjustments thereto are needed. This determination involves judgement and the use of estimates and assumptions, including expectations of future taxable income and tax planning strategies. The Company applies judgment to consider the relative impact of negative and positive evidence, and the weight given to negative and positive evidence is commensurate with the extent to which such evidence can be objectively verified. Based on the Company’s evaluation of all available positive and negative evidence, and with greater weight placed on the objectively verifiable evidence which included the Company’s substantial losses incurred during the nine months ended September 30, 2024, the Company determined, at the end of the third quarter, that it is more likely than not that the Company’s net U.S. deferred tax assets will not be realized. As a result, the Company provided a full valuation allowance against its U.S. federal and state deferred tax assets resulting in a recorded income tax expense in the amount of approximately $ 6,417,000 The Company had income tax expenses of $ 6,417,000 and $ 4,300,000 for the three and nine months ended September 30, 2024, respectively, and income tax expenses of $ 254,000 and $ 482,000 for the three and nine months ended September 30, 2023, respectively, for our continuing operations. The Company’s effective tax rates were approximately 268.6 % and 36.6 % for the three and nine months ended September 30, 2024, respectively, and 50.8 % and 51.8 % for the three and nine months ended September 30, 2023, respectively. The Company’s effective tax rates for the three and nine months ended September 30, 2024, were primarily impacted by the full valuation allowance on its deferred assets as discussed above.

Sale of Common Stock

Sale of Common Stock	9 Months Ended
	Sep. 30, 2024
Sale Of Common Stock
Sale of Common Stock	14. Sale of Common Stock On May 21, 2024, the Company entered into a Securities Purchase Agreement (the “Securities Purchase Agreement”) with certain institutional and retail investors (the “Purchasers”), pursuant to which the Company sold and issued, in a registered direct offering, an aggregate of 2,051,282 9.75 20,000,000 The Shares were offered and sold by the Company pursuant to the Company’s “shelf” registration statement on Form S-3 and prospectus supplement relating thereto. Craig-Hallum Capital Group LLC (“Craig-Hallum”) and Wellington Shields & Co. LLC (“Wellington Shields”) (Wellington Shields and Craig-Hallum together are known as the “Placement Agents”) served as the exclusive placement agents in connection with the Offering. The Company paid the Placement Agents a total cash fee of 6.00 1,200,000 80,000 61,538 the aggregate number of Warrant Shares that may be acquired under the Placement Agents’ Warrants equal to 3.0% of the number of Shares sold in the registered direct offering, at an exercise price per share equal to $12.19, which is equal to approximately 125% of the price per share of the Shares sold in the Offering. Neither the Placement Agents’ Warrants nor the Warrant Shares have been registered under the Registration Statement or otherwise. The Placement Agents’ Warrants have a term of five years, are exercisable at any time and from time to time, in whole or in part, during the four and one-half (4 ½) year period commencing 180 days from the last date of closing of the Offering which was May 24, 2024, and are exercisable via “cashless exercise” in certain circumstances. 331,000 58.78 4.53 five years After deducting costs incurred of approximately $ 1,544,000 18,456,000 1,505,000 1,544,000

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2024
Subsequent Events [Abstract]
Subsequent Events	15. Subsequent Events The Company evaluated subsequent events and transactions that occurred after the balance sheet date through November 13, 2024, the date that these condensed consolidated financial statements were available to be issued. Based upon this review, the Company did not identify any subsequent events that would have required adjustment or disclosure in the condensed consolidated financial statements other than the below: Credit Facility On November 12, 2024, the Company entered into an amendment to its Loan Agreement, as amended, with its lender which provided the following, among other things: ● removes the quarterly FCCR testing requirement for the third quarter of 2024; ● reinstates the quarterly FCCR testing requirement starting in the fourth quarter of 2024 and revises the methodology to be used in calculating the FCCR as follows (with no change to the minimum 1.15:1 ratio requirement): FCCR for the fourth quarter is to be determined based on financial results for the three-months period ending December 31, 2024; FCCR for the first quarter of 2025 is to be determined based on financial results for the six-months period ending March 31, 2025; FCCR for the second quarter of 2025 is to be determined based on financial results for the nine-months period ending June 30, 2025; and FCCR for the third quarter of 2025 and each fiscal quarter thereafter is to be determined based on financial results for a trailing twelve-months period ending basis; ● extends the required maintenance of a daily minimum of $ 3,000,000 ● in the event the Company is able to achieve its minimum quarterly FCCR requirement utilizing its financial results based on a trailing twelve-months period starting with the quarter ended September 30, 2024, the maintenance of a daily minimum Liquidity requirement of $ 3,000,000 In connection with the amendment, the Company paid its lender a fee of $ 12,500

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2024
Accounting Policies [Abstract]
Recently Issued Accounting Standards – Not Yet Adopted	Recently Issued Accounting Standards – Not Yet Adopted In August 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-05, “Business Combinations—Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement.” ASU 2023-05 applies to the formation of a “joint venture” or a “corporate joint venture” and requires a joint venture to initially measure all contributions received upon its formation at fair value. The guidance does not impact accounting by the venturers. The new guidance is applicable to joint venture entities with a formation date on or after January 1, 2025, on a prospective basis. The Company is currently evaluating the impact of this ASU on its consolidated financial statements. In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures,” which expands reportable segment disclosure requirements by requiring disclosures of significant reportable segment expenses that are regularly provided to the chief operating decision maker (“CODM”) and included within each reported measure of a segment’s profit or loss. The ASU also requires disclosure of the title and position of the individual identified as the CODM and an explanation of how the CODM uses the reported measures of a segment’s profit or loss in assessing segment performance and deciding how to allocate resources. Additionally, ASU 2023-07 requires all segment profit or loss and assets disclosures to be provided on an annual and interim basis. The amendments in this ASU are required to be adopted for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted, and should be applied on a retrospective basis. ASU 2023-07 will be effective for the Company’s financial statements for the year ended December 31, 2024. This ASU will not have impact on the Company’s consolidated financial condition or results of operations. The Company is evaluating the impact to the related segment reporting disclosures. In December 2023, the FASB issued ASU No. 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which modifies the rules on income tax disclosures to require entities to disclose (1) specific categories in the rate reconciliation, (2) the income or loss from continuing operations before income tax expense or benefit (separated between domestic and foreign) and (3) income tax expense or benefit from continuing operations (separated by federal, state and foreign). ASU 2023-09 also requires entities to disclose their income tax payments to international, federal, state and local jurisdictions, among other changes. The guidance is effective for annual periods beginning after December 15, 2024. ASU 2023-09 should be applied on a prospective basis, but retrospective application is permitted. This ASU will not have impact on the Company’s consolidated financial condition or results of operations. The Company is evaluating the impact to its income taxes reporting disclosures.

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	Schedule of Disaggregation of Revenue Revenue by Contract Type (In thousands) Three Months Ended Three Months Ended September 30, 2024 September 30, 2023 Treatment Services Total Treatment Services Total Fixed price $ 9,064 $ 6,396 $ 15,460 $ 10,795 $ 10,188 $ 20,983 Time and materials — 1,352 1,352 — 894 894 Total $ 9,064 $ 7,748 $ 16,812 $ 10,795 $ 11,082 $ 21,877 Revenue by Contract Type (In thousands) Nine Months Ended Nine Months Ended September 30, 2024 September 30, 2023 Treatment Services Total Treatment Services Total Fixed price $ 26,116 $ 15,405 $ 41,521 $ 33,223 $ 29,995 $ 63,218 Time and materials — 2,894 2,894 — 3,798 3,798 Total $ 26,116 $ 18,299 $ 44,415 $ 33,223 $ 33,793 $ 67,016 Revenue by generator (In thousands) Three Months Ended Three Months Ended September 30, 2024 September 30, 2023 Treatment Services Total Treatment Services Total Domestic government $ 6,578 $ 7,346 $ 13,924 $ 7,095 $ 8,444 $ 15,539 Domestic commercial 2,229 312 2,541 3,450 2,170 5,620 Foreign government — 65 65 250 445 695 Foreign commercial 257 25 282 — 23 23 Total $ 9,064 $ 7,748 $ 16,812 $ 10,795 $ 11,082 $ 21,877 Revenue by generator (In thousands) Nine Months Ended Nine Months Ended September 30, 2024 September 30, 2023 Treatment Services Total Treatment Services Total Domestic government $ 18,997 $ 17,129 $ 36,126 $ 24,160 $ 29,603 $ 53,763 Domestic commercial 6,045 867 6,912 7,925 3,509 11,434 Foreign government 1 232 233 1,002 615 1,617 Foreign commercial 1,073 71 1,144 136 66 202 Total $ 26,116 $ 18,299 $ 44,415 $ 33,223 $ 33,793 $ 67,016
Schedule of Contract Balances	Schedule of Contract Balances (In thousands) September 30, 2024 December 31, 2023 Change ($) Change (%) Contract assets Unbilled receivables - current $ 7,277 $ 8,432 $ (1,155 ) -14 % Contract liabilities Deferred revenue $ 5,398 $ 6,815 $ (1,417 ) -20.8 % (In thousands) September 30, 2023 December 31, 2022 Change ($) Change (%) Contract assets Unbilled receivables - current $ 9,336 $ 6,062 $ 3,274 54.0 % Contract liabilities Deferred revenue $ 7,765 $ 4,813 $ 2,952 61.3 %
Schedule of Changes in Accounts Receivable, Net of Credit Losses	The following table represents changes in accounts receivable, net of credit losses, for the periods noted: Schedule of Changes in Accounts Receivable, Net of Credit Losses (In thousands) September 30, 2024 December 31, 2023 Change ($) Change (%) Accounts Receivable (net) $ 8,741 $ 9,722 $ (981 ) -10.1 % September 30, 2023 December 31, 2022 Change ($) Change (%) Accounts Receivable (net) $ 15,342 $ 9,364 $ 5,978 63.8 %

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2024
Leases
Schedule of Components of Lease Cost	The components of lease cost for the Company’s leases for the three and nine months ended September 30, 2024, and 2023 were as follows (in thousands): Schedule of Components of Lease Cost Three Months Ended Nine Months Ended September 30, September 30, 2024 2023 2024 2023 Operating Leases: Lease cost $ 129 $ 157 $ 420 $ 470 Finance Leases: Amortization of ROU assets 65 39 196 115 Interest on lease liability 20 9 63 22 Finance lease 85 48 259 137 Short-term lease rent expense 1 — 3 1 Total lease cost $ 215 $ 205 $ 682 $ 608
Schedule of Weighted Average Lease	The weighted average remaining lease term and the weighted average discount rate for operating and finance leases at September 30, 2024, were: Schedule of Weighted Average Lease Operating Leases Finance Leases Weighted average remaining lease terms (years) 4.9 3.9 Weighted average discount rate 7.7 % 9.0 % The weighted average remaining lease term and the weighted average discount rate for operating and finance leases at September 30, 2023, were: Operating Leases Finance Leases Weighted average remaining lease terms (years) 5.7 3.2 Weighted average discount rate 7.5 % 7.0 %
Schedule of Operating and Finance Lease Liability Maturity	The following table reconciles the undiscounted cash flows for the operating and finance leases at September 30, 2024, to the operating and finance lease liabilities recorded on the balance sheet (in thousands): Schedule of Operating and Finance Lease Liability Maturity Operating Leases Finance Leases 2024 $ 108 $ 91 2025 486 345 2026 479 192 2027 447 157 2028 343 134 2029 and thereafter 407 102 Total undiscounted lease payments 2,270 1,021 Less: Imputed interest (429 ) (172 ) Present value of lease payments $ 1,841 $ 849 Current portion of operating lease obligations $ 320 $ — Long-term operating lease obligations, less current portion $ 1,521 $ — Current portion of finance lease obligations $ — $ 285 Long-term finance lease obligations, less current portion $ — $ 564
Schedule of Supplemental Cash Flow and Other Information Related to Leases	Supplemental cash flow and other information related to our leases were as follows for the three and nine months ended September 30, 2024, and 2023 (in thousands): Schedule of Supplemental Cash Flow and Other Information Related to Leases Three Months Ended Nine Months Ended September 30, September 30, 2024 2023 2024 2023 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flow used in operating leases $ 119 $ 145 $ 415 $ 435 Operating cash flow used in finance leases $ 20 $ 9 $ 63 $ 22 Financing cash flow used in finance leases $ 72 $ 54 $ 218 $ 135 ROU assets obtained in exchange for lease obligations for: Finance liabilities $ — $ 154 $ — $ 311 Operating liabilities $ — 484 $ 497 $ 484 Reduction to ROU assets resulting from purchase of underlying asset: Operating liabilities 404 — 404 — Reduction to ROU assets resulting from purchase of underlying asset, Operating liabilities 404 — 404 —

Intangible Assets (Tables)

Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Definite Lived Intangible Assets	The following table summarizes information relating to the Company’s definite-lived intangible assets: Schedule of Definite Lived Intangible Assets September 30, 2024 December 31, 2023 Weighted Average Amortization Period Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying (Years) Amount Amortization Amount Amount Amortization Amount Other Intangibles (amount in thousands) Patents 8.3 $ 733 $ (397 ) $ 336 $ 710 $ (387 ) $ 323 Software 3 673 (589 ) 84 667 (529 ) 138 Total $ 1,406 $ (986 ) $ 420 $ 1,377 $ (916 ) $ 461
Schedule of Finite Lived Intangible Assets, Future Amortization Expense	The following table summarizes the expected amortization over the next five years for our definite-lived intangible assets: Schedule of Finite Lived Intangible Assets, Future Amortization Expense Amount Year (In thousands) 2024 (Remaining) $ 13 2025 45 2026 40 2027 22 2028 13 Total $ 133

Capital Stock, Stock Plans an_2

Capital Stock, Stock Plans and Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Share-based Compensation, Allocation of Recognized Period Costs	The following table summarizes stock-based compensation recognized for the three and nine months ended September 30, 2024, and 2023 for our employee and director stock options. Schedule of Share-based Compensation, Allocation of Recognized Period Costs 2024 2023 2024 2023 Three Months Ended Nine Months Ended Stock Options September 30, September 30, 2024 2023 2024 2023 Employee Stock Options $ 96,000 $ 94,000 $ 259,000 $ 273,000 Director Stock Options 86,000 55,000 207,000 119,000 Total $ 182,000 $ 149,000 $ 466,000 $ 392,000
Schedule of Stock Options Roll Forward	The summary of the Company’s stock option plans as of September 30, 2024, and September 30, 2023, and changes during the periods then ended, are presented below. The Company’s plans consist of the 2017 Plan and the 2003 Plan: Schedule of Stock Options Roll Forward Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (years) Aggregate Intrinsic (4) Options outstanding January 1, 2024 994,500 $ 5.57 - Granted 150,500 $ 9.43 Exercised (58,700 ) $ 5.57 $ 306,574 Forfeited (46,400 ) $ 5.93 Options outstanding end of period (1) 1,039,900 $ 6.12 4.8 $ 6,397,354 Options exercisable at September 30, 2024 (2) 386,000 $ 5.31 4.0 $ 2,684,482 Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (years) Aggregate (4) Options outstanding January 1, 2023 1,018,400 $ 5.02 - Granted 365,000 $ 3.19 Exercised (282,400 ) $ 3.70 $ 2,118,892 Forfeited/expired/cancelled (64,500 ) $ 3.67 Options outstanding end of period (2) 1,036,500 $ 5.48 5.1 $ 5,146,126 Options exercisable at September 30, 2023 (3) 302,300 $ 4.91 3.9 $ 1,675,604 (1) Options with exercise prices ranging from $ 3.15 10.20 (2) Options with exercise prices ranging from $ 3.15 9.81 (3) Options with exercise prices ranging from $ 3.15 7.50 (4) The intrinsic value of a stock option is the amount by which the market value of the underlying stock exceeds the exercise price.

(Loss) Income Per Share (Tables

(Loss) Income Per Share (Tables)	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	Schedule of Earnings Per Share 2024 2023 2024 2023 Three Months Ended Nine Months Ended (Amounts in Thousands, Except for Per Share Amounts) September 30, (Unaudited) September 30, (Unaudited) 2024 2023 2024 2023 (Loss) income per common share from continuing operations (Loss) income from continuing operations, net of taxes $ (8,806 ) $ 246 $ (16,049 ) $ 448 Basic (loss) income per share $ (.56 ) $ .02 $ (1.09 ) $ .03 Diluted (loss) income per share $ (.56 ) $ .02 $ (1.09 ) $ .03 (Loss) income per common share from discontinued operations, net of taxes (Loss) income from discontinued operations, net of taxes $ (173 ) $ 95 $ (441 ) $ (44 ) Basic (loss) income per share $ (.01 ) $ .01 $ (.03 ) $ — Diluted loss per share $ (.01 ) $ — $ (.03 ) $ — Net (loss) income per common share Net (loss) income $ (8,979 ) $ 341 $ (16,490 ) $ 404 Basic (loss) income per share $ (.57 ) $ .03 $ (1.12 ) $ .03 Diluted (loss) income per share $ (.57 ) $ .02 $ (1.12 ) $ .03 Weighted average shares outstanding: Basic weighted average shares outstanding 15,803 13,568 14,695 13,468 Add: dilutive effect of stock options — 370 — 244 Add: dilutive effect of warrants — 41 — 37 Diluted weighted average shares outstanding 15,803 13,979 14,695 13,749 Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include: Stock options — — 70 70 Warrant 62 — 62 —

Long Term Debt (Tables)

Long Term Debt (Tables)	9 Months Ended
	Sep. 30, 2024
Debt Disclosure [Abstract]
Schedule of Long Term Debt	Long-term debt consists of the following: Schedule of Long Term Debt (Amounts in Thousands) September 30, 2024 December 31, 2023 Revolving Credit (1) $ — $ — Revolving Credit May 15, 2027 10.5 (1) $ — $ — Term Loan 1 balance due on May 15, 2027 9.5 (1) — 213 Term Loan 2 balance due on May 15, 2027 9.4 (1) 1,958 2,333 Capital Line May 15, 2027 8.8 (1) 279 358 Debt Issuance Costs (184 ) (2) (170 ) (2) Notes Payable 8.10 10.7 (3) 411 14 Total debt 2,464 2,748 Less current portion of long-term debt 554 773 Long-term debt $ 1,910 $ 1,975 (1) Our revolving credit facility is collateralized by our accounts receivable, and our term loans and capital line are collateralized by our property, plant, and equipment. (2) Aggregate unamortized debt issuance costs in connection with the Company’s credit facility, which consists of the revolving credit, Term loan 1, Term loan 2 and Capital Line, as applicable. (3) Includes a promissory note entered into on July 24, 2024, in connection with the purchase of the Company’s EWOC property. See a discussion of this note below which include a variable interest rate provision.

Discontinued Operations (Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2024
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Disposal Groups, Including Discontinued Operation Balance Sheet	The following table presents the major class of assets of discontinued operations as of September 30, 2024, and December 31, 2023. No assets and liabilities were held for sale at each of the periods noted. Schedule of Disposal Groups, Including Discontinued Operation Balance Sheet September 30, December 31, (Amounts in Thousands) 2024 2023 Current assets Other assets $ 12 $ 13 Total current assets 12 13 Long-term assets Property, plant and equipment, net (1) 130 81 Total long-term assets 130 81 Total assets $ 142 $ 94 Current liabilities Accounts payable $ 96 $ 80 Accrued expenses and other liabilities 154 128 Environmental liabilities 1 61 Total current liabilities 251 269 Long-term liabilities Closure liabilities 176 169 Environmental liabilities 766 784 Total long-term liabilities 942 953 Total liabilities $ 1,193 $ 1,222 (1) net of accumulated depreciation of $ 10,000

Operating Segments (Tables)

Operating Segments (Tables)	9 Months Ended
	Sep. 30, 2024
Segment Reporting [Abstract]
Schedule of Segment Reporting Information	Schedule of Segment Reporting Information Segment Reporting for the Quarter Ended September 30, 2024 (1) Treatment Services Segments Total Corporate (1) Consolidated Total Revenue from external customers $ 9,064 $ 7,748 $ 16,812 $ — $ 16,812 Intercompany revenues 13 23 36 — — Gross profit 410 924 1,334 — 1,334 Research and development 205 34 239 64 303 Interest income 6 — 6 286 292 Interest expense (37 ) (3 ) (40 ) (81 ) (121 ) Interest expense-financing fees — — — (18 ) (18 ) Depreciation and amortization 370 44 414 19 433 Segment loss (4,902 ) (2,294 ) (7,196 ) (1,610 ) (8,806 ) (4) Expenditures for segment assets 1,203 180 1,383 — 1,383 (2) Segment Reporting for the Quarter Ended September 30, 2023 (1) Treatment Services Segments Total Corporate (1) Consolidated Total Revenue from external customers $ 10,795 $ 11,082 $ 21,877 $ — $ 21,877 Intercompany revenues 4 88 92 — — Gross profit 1,494 3,055 4,549 — 4,549 Research and development 102 1 103 17 120 Interest income — — — 146 146 Interest expense (23 ) (1 ) (24 ) (65 ) (89 ) Interest expense-financing fees — — — (36 ) (36 ) Depreciation and amortization 584 88 672 14 686 Segment income (loss) 1,014 1,120 2,134 (1,888 ) 246 Expenditures for segment assets 333 7 340 — 340 (3) Segment Reporting for the Nine Months Ended September 30, 2024 (1) Treatment Services Segments Total Corporate (1) Consolidated Total Revenue from external customers $ 26,116 $ 18,299 $ 44,415 $ — $ 44,415 Intercompany revenues 67 52 119 — — Gross (loss) profit (839 ) 247 (592 ) — (592 ) Research and development 609 87 696 176 872 Interest income 7 — 7 672 679 Interest expense (107 ) (4 ) (111 ) (235 ) (346 ) Interest expense-financing fees — — — (47 ) (47 ) Depreciation and amortization 1,104 133 1,237 58 1,295 Segment loss (7,416 ) (3,713 ) (11,129 ) (4,920 ) (16,049 ) (4) Expenditures for segment assets 1,820 404 2,224 — 2,224 (2) Segment Reporting for the Nine Months Ended September 30, 2023 (1) Treatment Services Segments Total Corporate (1) Consolidated Total Revenue from external customers $ 33,223 $ 33,793 $ 67,016 $ — $ 67,016 Intercompany revenues 234 124 358 — — Gross profit 5,237 6,837 12,074 — 12,074 Research and development 260 11 271 69 340 Interest income — — — 445 445 Interest expense (68 ) (2 ) (70 ) (119 ) (189 ) Interest expense-financing fees — — — (80 ) (80 ) Depreciation and amortization 1,745 337 2,082 42 2,124 Segment income (loss) 2,619 2,933 5,552 (5,104 ) 448 Expenditures for segment assets 1,376 10 1,386 — 1,386 (3) (1) Amounts reflect the activity for corporate headquarters not included in the segment information. (2) Net of financed amount of $ 361,000 406,000 (3) Net of financed amount of $ 152,000 309,000 (4) Includes tax expense recorded in the amount of approximately $ 6,417,000

Schedule of Disaggregation of R

Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Total	$ 16,812	$ 21,877	$ 44,415	$ 67,016
Domestic Government [Member]
Disaggregation of Revenue [Line Items]
Total	13,924	15,539	36,126	53,763
Domestic Commercial [Member]
Disaggregation of Revenue [Line Items]
Total	2,541	5,620	6,912	11,434
Foreign Government [Member]
Disaggregation of Revenue [Line Items]
Total	65	695	233	1,617
Foreign Commercial [Member]
Disaggregation of Revenue [Line Items]
Total	282	23	1,144	202
Fixed Price [Member]
Disaggregation of Revenue [Line Items]
Total	15,460	20,983	41,521	63,218
Time and Materials [Member]
Disaggregation of Revenue [Line Items]
Total	1,352	894	2,894	3,798
Treatment [Member]
Disaggregation of Revenue [Line Items]
Total	9,064	10,795	26,116	33,223
Treatment [Member] | Domestic Government [Member]
Disaggregation of Revenue [Line Items]
Total	6,578	7,095	18,997	24,160
Treatment [Member] | Domestic Commercial [Member]
Disaggregation of Revenue [Line Items]
Total	2,229	3,450	6,045	7,925
Treatment [Member] | Foreign Government [Member]
Disaggregation of Revenue [Line Items]
Total		250	1	1,002
Treatment [Member] | Foreign Commercial [Member]
Disaggregation of Revenue [Line Items]
Total	257		1,073	136
Treatment [Member] | Fixed Price [Member]
Disaggregation of Revenue [Line Items]
Total	9,064	10,795	26,116	33,223
Treatment [Member] | Time and Materials [Member]
Disaggregation of Revenue [Line Items]
Total
Services [Member]
Disaggregation of Revenue [Line Items]
Total	7,748	11,082	18,299	33,793
Services [Member] | Domestic Government [Member]
Disaggregation of Revenue [Line Items]
Total	7,346	8,444	17,129	29,603
Services [Member] | Domestic Commercial [Member]
Disaggregation of Revenue [Line Items]
Total	312	2,170	867	3,509
Services [Member] | Foreign Government [Member]
Disaggregation of Revenue [Line Items]
Total	65	445	232	615
Services [Member] | Foreign Commercial [Member]
Disaggregation of Revenue [Line Items]
Total	25	23	71	66
Services [Member] | Fixed Price [Member]
Disaggregation of Revenue [Line Items]
Total	6,396	10,188	15,405	29,995
Services [Member] | Time and Materials [Member]
Disaggregation of Revenue [Line Items]
Total	$ 1,352	$ 894	$ 2,894	$ 3,798

Schedule of Contract Balances (

Schedule of Contract Balances (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unbilled receivables - current	$ 7,277	$ 9,336	$ 8,432	$ 6,062
Change in unbilled receivables	(1,155)	3,274
Deferred revenue	5,398	7,765	$ 6,815	$ 4,813
Year to Date Changes [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Change in unbilled receivables	$ (1,155)	$ 3,274
Change in unbilled receivables, percentage	(14.00%)	54%
Change in deferred revenue	$ (1,417)	$ 2,952
Change in deferred revenue, percentage	(20.80%)	61.30%

Schedule of Changes in Accounts

Schedule of Changes in Accounts Receivable, Net of Credit Losses (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Accounts Receivable (net)	$ 8,741	$ 15,342	$ 9,722	$ 9,364
Change in accounts receivable (net)	(990)	6,034
Year to Date Changes [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Change in accounts receivable (net)	$ (981)	$ 5,978
Change in accounts receivables, percentage	(10.10%)	63.80%

Revenue (Details Narrative)

Revenue (Details Narrative) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue from Contract with Customer [Abstract]
Revenue recognized	$ 677,000	$ 842,000	$ 5,596,000	$ 6,289,000

Schedule of Components of Lease

Schedule of Components of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Leases
Lease cost	$ 129	$ 157	$ 420	$ 470
Amortization of ROU assets	65	39	196	115
Interest on lease liability	20	9	63	22
Finance lease	85	48	259	137
Short-term lease rent expense	1		3	1
Total lease cost	$ 215	$ 205	$ 682	$ 608

Schedule of Weighted Average Le

Schedule of Weighted Average Lease (Details)	Sep. 30, 2024	Sep. 30, 2023
Leases
Operating leases, weighted average remaining lease terms (years)	4 years 10 months 24 days	5 years 8 months 12 days
Finance leases, weighted average remaining lease terms (years)	3 years 10 months 24 days	3 years 2 months 12 days
Operating leases, weighted average discount rate	7.70%	7.50%
Finance leases, weighted average discount rate	9%	7%

Schedule of Operating and Finan

Schedule of Operating and Finance Lease Liability Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Operating Leases
2024	$ 108
2025	486
2026	479
2027	447
2028	343
2029 and thereafter	407
Total undiscounted lease payments	2,270
Less: Imputed interest	(429)
Present value of lease payments	1,841
Current portion of operating lease obligations	320	$ 380
Current portion of operating lease obligations	1,521	1,670
Finance Leases
2024	91
2025	345
2026	192
2027	157
2028	134
2029 and thereafter	102
Total undiscounted lease payments	1,021
Less: Imputed interest	(172)
Present value of lease payments	849
Current portion of finance lease obligations	285	291
Long-term finance lease obligations, less current portion	$ 564	$ 776

Schedule of Supplemental Cash F

Schedule of Supplemental Cash Flow and Other Information Related to Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Leases
Operating cash flow used in operating leases	$ 119	$ 145	$ 415	$ 435
Operating cash flow used in finance leases	20	9	63	22
Financing cash flow used in finance leases	72	54	218	135
Finance liabilities		154		311
Operating liabilities		484	497	484
Reduction to ROU assets resulting from purchase of underlying asset, Operating liabilities	$ 404		$ 404

Schedule of Definite Lived Inta

Schedule of Definite Lived Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,406	$ 1,377
Accumulated Amortization	(986)	(916)
Net Carrying Amount	$ 420	461
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	8 years 3 months 18 days
Gross Carrying Amount	$ 733	710
Accumulated Amortization	(397)	(387)
Net Carrying Amount	$ 336	323
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	3 years
Gross Carrying Amount	$ 673	667
Accumulated Amortization	(589)	(529)
Net Carrying Amount	$ 84	$ 138

Schedule of Finite Lived Intang

Schedule of Finite Lived Intangible Assets, Future Amortization Expense (Details) $ in Thousands	Sep. 30, 2024 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2024 (Remaining)	$ 13
2025	45
2026	40
2027	22
2028	13
Total	$ 133

Intangible Assets (Details Narr

Intangible Assets (Details Narrative) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible asset	$ 22,000	$ 55,000	$ 70,000	$ 165,000

Schedule of Share-based Compens

Schedule of Share-based Compensation, Allocation of Recognized Period Costs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total	$ 182,000	$ 149,000	$ 466,000	$ 392,000
Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total	96,000	94,000	259,000	273,000
Director Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total	$ 86,000	$ 55,000	$ 207,000	$ 119,000

Schedule of Stock Options Roll

Schedule of Stock Options Roll Forward (Details) - Equity Option [Member] - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
		Sep. 30, 2024		Sep. 30, 2023
Marketable Securities [Line Items]
Options Shares Outstanding, Beginning		994,500		1,018,400
Options Weighted Average Exercise Price Outstanding, Beginning		$ 5.57		$ 5.02
Options Aggregate Intrinsic Value Outstanding, Beginning	[1]
Options Shares, Granted		150,500		365,000
Options Weighted Average Exercise Price, Granted		$ 9.43		$ 3.19
Options Shares, Exercised		(58,700)		(282,400)
Options Weighted Average Exercise Price, Exercised		$ 5.57		$ 3.70
Options Aggregate Intrinsic Value, Exercised		$ 306,574	[2]	$ 2,118,892	[1]
Options Shares, Forfeited/expired/cancelled		(46,400)		(64,500)
Options Weighted Average Exercise Price, Forfeited/expired/cancelled		$ 5.93		$ 3.67
Options Shares Outstanding, Ending		1,039,900	[3]	1,036,500	[2]
Options Weighted Average Exercise Price Outstanding, Ending	[2]	$ 6.12		$ 5.48
Options Weighted Average Remaining Contractual Term (years) Outstanding		4 years 9 months 18 days	[3]	5 years 1 month 6 days	[2]
Options Aggregate Intrinsic Value Outstanding, Ending	[2]	$ 6,397,354	[3]	$ 5,146,126	[1]
Options Shares, Exercisable		386,000	[2]	302,300	[4]
Options Weighted Average Exercise Price, Exercisable		$ 5.31	[2]	$ 4.91	[4]
Options Weighted Average Remaining Contractual Term (years) Exercisable		4 years	[2]	3 years 10 months 24 days	[4]
Options Aggregate Intrinsic Value, Exercisable	[1]	$ 2,684,482	[2]	$ 1,675,604	[4]
[1]The intrinsic value of a stock option is the amount by which the market value of the underlying stock exceeds the exercise price.[2]Options with exercise prices ranging from $ 3.15 9.81 3.15 10.20 3.15 7.50

Schedule of Stock Options Rol_2

Schedule of Stock Options Roll Forward (Details) (Parenthetical)	9 Months Ended
	Sep. 30, 2024 $ / shares
Stock Option Outstanding One [Member]
Marketable Securities [Line Items]
Share-based payment arrangement, option, exercise price range, lower range limit	$ 3.15
Share-based payment arrangement, option, exercise price range, upper range limit	10.20
Stock Option Outstanding Two [Member]
Marketable Securities [Line Items]
Share-based payment arrangement, option, exercise price range, lower range limit	3.15
Share-based payment arrangement, option, exercise price range, upper range limit	9.81
Stock Option Outstanding Three [Member]
Marketable Securities [Line Items]
Share-based payment arrangement, option, exercise price range, lower range limit	3.15
Share-based payment arrangement, option, exercise price range, upper range limit	$ 7.50

Capital Stock, Stock Plans an_3

Capital Stock, Stock Plans and Stock-Based Compensation (Details Narrative) - USD ($)			3 Months Ended	9 Months Ended
	Jul. 18, 2024	Jan. 18, 2024	Mar. 31, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock, par value				$ 0.001		$ 0.001
Proceeds from stock options exercised				$ 264,000	$ 150,000
Loans payable			$ 2,500,000
Warrants exercise price			$ 3.51
Proceeds from warrant exercised			$ 105,000
Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Warrant to purchase			30,000
Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares issued from option exercise				14,717
Number of option exercised				29,000
Common Stock [Member] | Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares issued from option exercise				29,700
Number of option exercised				29,700
Proceeds from stock options exercised				$ 159,000
Common Stock [Member] | Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock options, exercise price				$ 3.15
Common Stock [Member] | Minimum [Member] | Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock options, exercise price				3.70
Common Stock [Member] | Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock options, exercise price				7.005
Common Stock [Member] | Maximum [Member] | Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock options, exercise price				$ 7.005
Employee and Directors [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation cost related to unvested options consultant				$ 2,091,000
Weighted average term for unrecognized and unvested option to be recognized				3 years 2 months 12 days
2003 Outside Directors Stock Option Plan [Member] | Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock issued during period for services, shares				37,146
2003 Outside Directors Stock Plan [Member] | Portion of Director Fee Earned in Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Allocated share-based compensation expense				$ 363,000
Incentive Stock Option Agreement [Member] | 2017 Stock Option Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares options granted	35,500	45,000
Common stock, par value		$ 0.001
Weighted average contractual term (years) outstanding	6 years	6 years
Vesting, description	one-fifth vesting annually over a five-year period	one-fifth vesting annually over a five-year period
Stock options, exercise price	$ 10.05	$ 7.75
Non Qualified Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares options granted	10,000
Weighted average contractual term (years) outstanding	10 years
Vesting, description	one-fourth vesting annually over a four-year period
Stock options, exercise price	$ 10.20

Schedule of Earnings Per Share

Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands	3 Months Ended							9 Months Ended
	Sep. 30, 2024		Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024		Sep. 30, 2023
(Loss) income per common share from continuing operations
(Loss) income from continuing operations, net of taxes	$ (8,806,000)	[1]			$ 246,000			$ (16,049,000)	[1]	$ 448,000
Basic (loss) income per share	$ (0.56)				$ 0.02			$ (1.09)		$ 0.03
Diluted (loss) income per share	$ (0.56)				$ 0.02			$ (1.09)		$ 0.03
(Loss) income per common share from discontinued operations, net of taxes
(Loss) income from discontinued operations, net of taxes	$ (173,000)				$ 95,000			$ (441,000)		$ (44,000)
Basic (loss) income per share	$ (0.01)				$ 0.01			$ (0.03)
Diluted loss per share	$ (0.01)							$ (0.03)
Net (loss) income per common share
Net (loss) income	$ (8,979,000)		$ (3,951,000)	$ (3,560,000)	$ 341,000	$ 474,000	$ (411,000)	$ (16,490,000)		$ 404,000
Basic (loss) income per share	$ (0.57)				$ 0.03			$ (1.12)		$ 0.03
Diluted (loss) income per share	$ (0.57)				$ 0.02			$ (1.12)		$ 0.03
Weighted average shares outstanding:
Basic weighted average shares outstanding	15,803				13,568			14,695		13,468
Add: dilutive effect of stock options					370					244
Add: dilutive effect of warrants					41					37
Diluted weighted average shares outstanding	15,803				13,979			14,695		13,749
Stock Options [Member]
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include:
Warrant								70		70
Warrant [Member]
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include:
Warrant	62							62
[1]Includes tax expense recorded in the amount of approximately $ 6,417,000

Schedule of Long Term Debt (Det

Schedule of Long Term Debt (Details) - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Debt issuance costs	[1]	$ (184)	$ (170)
Total debt		2,464	2,748
Less current portion of long-term debt		554	773
Long-term debt		1,910	1,975
Revolving Credit [Member]
Debt Instrument [Line Items]
Total debt	[2]
Term Loan One [Member]
Debt Instrument [Line Items]
Total debt	[2]		213
Term Loan Two [Member]
Debt Instrument [Line Items]
Total debt	[2]	1,958	2,333
Captail Line [Member]
Debt Instrument [Line Items]
Total debt	[2]	279	358
Notes Payable [Member]
Debt Instrument [Line Items]
Total debt	[3]	$ 411	$ 14
[1]Aggregate unamortized debt issuance costs in connection with the Company’s credit facility, which consists of the revolving credit, Term loan 1, Term loan 2 and Capital Line, as applicable.[2]Our revolving credit facility is collateralized by our accounts receivable, and our term loans and capital line are collateralized by our property, plant, and equipment.[3]Includes a promissory note entered into on July 24, 2024, in connection with the purchase of the Company’s EWOC property. See a discussion of this note below which include a variable interest rate provision.

Schedule of Long Term Debt (D_2

Schedule of Long Term Debt (Details) (Parenthetical)	Jul. 31, 2023	May 04, 2021	May 08, 2020	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Revolving Credit [Member]
Debt Instrument [Line Items]
Debt due date			May 15, 2027
Effective interest rate				10.50%
Term Loan One [Member]
Debt Instrument [Line Items]
Debt due date			May 15, 2027
Effective interest rate				9.50%
Term Loan Two [Member]
Debt Instrument [Line Items]
Debt due date	May 15, 2027
Effective interest rate				9.40%
Capital Line [Member]
Debt Instrument [Line Items]
Debt due date		May 15, 2027
Effective interest rate					8.80%
Note Payable [Member]
Debt Instrument [Line Items]
Effective interest rate				8.10%		10.70%

Long Term Debt (Details Narrati

Long Term Debt (Details Narrative) - USD ($)					9 Months Ended
	Jul. 24, 2024	Jul. 31, 2023	Jun. 01, 2022	May 08, 2020	Sep. 30, 2024	Sep. 30, 2023	May 08, 2024	May 04, 2021
Line of Credit Facility [Line Items]
Letters of credit outstanding, amount					$ 3,950,000
Debt instrument, borrowing capacity capital line, amount								$ 1,000,000
Debt instrument, interest rate description					Pursuant to the Loan Agreement, payments of annual interest rates are as follows: (i) interest due on the revolving credit is at prime (8.00% at September 30, 2024) plus 2% or Secured Overnight Finance Rate (“SOFR”) (as defined in the Loan Agreement) plus 3.00% plus an SOFR Adjustment applicable for an interest period selected by the Company; (ii) interest due on each Term Loan 1 and the Capital Line was/is at prime plus 2.50% or SOFR plus 3.50% plus an SOFR Adjustment applicable for an interest period selected by the Company; and (iii) interest due on Term Loan 2 is at prime plus 3% or SOFR plus 4.00% plus an SOFR Adjustment applicable for an interest period selected by the Company. SOFR Adjustment rates of 0.10% and 0.15% are applicable for a one-month interest period and three-month period, respectively, that may be selected by the Company.
Purchase price of assets					$ 2,224,000	$ 1,386,000
Oak Ridge Environmental Waste Operations [Member]
Line of Credit Facility [Line Items]
Maturity date	Jul. 24, 2044
Debt instrument, periodic payment	$ 3,100
Purchase price of assets	425,000
Cash paid for acquiring assets	63,750
Bank remaining balance	$ 361,250
Annual fixed interest rate	8.10%
Interest rate	3%
Variable interest rates	4%
Interest rate increase decrease	1%
Oak Ridge Environmental Waste Operations [Member] | US Treasury Securities [Member]
Line of Credit Facility [Line Items]
Interest rate	3%
Minimum [Member]
Line of Credit Facility [Line Items]
Liquidity minimum requirement							$ 3,000,000
Minimum [Member] | Through June 29, 2024 [Member]
Line of Credit Facility [Line Items]
Liquidity minimum requirement							2,250,000
Minimum [Member] | June 30, 2024, through June 29, 2025 [Member]
Line of Credit Facility [Line Items]
Liquidity minimum requirement							3,000,000
Lender [Member]
Line of Credit Facility [Line Items]
Reduction in borrowing availability					750,000
Debt instrument, fee amount							$ 25,000
PNC Bank [Member] | Captail Line [Member]
Line of Credit Facility [Line Items]
Debt instrument carrying amount								$ 524,000
Debt instrument, periodic payment			$ 8,700
Loan Agreement [Member] | PNC Bank [Member] | Term Loan One [Member]
Line of Credit Facility [Line Items]
Debt instrument carrying amount				$ 1,742,000
Debt instrument periodic payment				35,547
Loan Agreement [Member] | PNC Bank [Member] | Term Loan Two [Member]
Line of Credit Facility [Line Items]
Debt instrument carrying amount				2,500,000
Debt instrument periodic payment				$ 41,667
Amended Loan Agreement [Member]
Line of Credit Facility [Line Items]
Debt instrument, description		The Company agreed to pay PNC 0.5% of the total financing under the Loan Agreement if the Company pays off its obligations to its lender after July 31, 2024, to and including July 31, 2025. No early termination fee shall apply if the Company pays off its obligations under Loan Agreement after July 31, 2025.
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Liquidity under credit facility					$ 13,984,000
Revolving Credit Facility [Member] | Loan Agreement [Member] | PNC Bank [Member]
Line of Credit Facility [Line Items]
Maturity date				May 15, 2027
Line of credit facility, maximum borrowing capacity				$ 12,500,000

Commitments and Contingencies (

Commitments and Contingencies (Details Narrative) - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2003	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Self-insured retention				$ 100,000
Restricted cash, noncurrent		$ 12,525,000		12,525,000		$ 12,074,000
Interest income		292,000	$ 146,000	679,000	$ 445,000
Letters of credit outstanding, amount		3,950,000		3,950,000
Bond outstanding		20,568,000		20,568,000
American International Group, Inc [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Period of finite risk insurance policy	25 years
Maximum allowable coverage of insurance policy		28,177,000		28,177,000
Coverage amount under the policy		23,379,000		23,379,000
Restricted cash, noncurrent		12,525,000		12,525,000		12,074,000
Interest income		$ 153,000	$ 146,000	$ 451,000	$ 356,000
Insurers obligation to entity on termination of contract		100%		100%
American International Group, Inc [Member] | Finite Risk Sinking Funds [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Interest income				$ 3,054,000		$ 2,603,000

Schedule of Disposal Groups, In

Schedule of Disposal Groups, Including Discontinued Operation Balance Sheet (Details) - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023
Current assets
Other assets		$ 12	$ 13
Total current assets		12	13
Long-term assets
Property, plant and equipment, net	[1]	130	81
Total long-term assets		130	81
Total assets		142	94
Current liabilities
Accounts payable		96	80
Accrued expenses and other liabilities		154	128
Environmental liabilities		1	61
Total current liabilities		251	269
Long-term liabilities
Closure liabilities		176	169
Environmental liabilities		766	784
Total long-term liabilities		942	953
Total liabilities		$ 1,193	$ 1,222
[1]net of accumulated depreciation of $ 10,000

Schedule of Disposal Groups, _2

Schedule of Disposal Groups, Including Discontinued Operation Balance Sheet (Details) (Parenthetical) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Discontinued Operations and Disposal Groups [Abstract]
Accumulated depreciation	$ 10,000	$ 10,000

Discontinued Operations (Detail

Discontinued Operations (Details Narrative) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Jun. 01, 2024
Discontinued Operations and Disposal Groups [Abstract]
(Loss) income from discontinued operations, net of taxes (Note 10)	$ (173,000)	$ 95,000	$ (441,000)	$ (44,000)
Net of tax expense	$ 79,000	$ 234,000	$ 0	$ 353,000
Lessor monthly payment for first year					$ 8,500
Lessor monthly payment second year					$ 8,755

Perma-Fix Canada, Inc. (_PF C_2

Perma-Fix Canada, Inc. (“PF Canada”) (Details Narrative) - USD ($)	May 31, 2024	Dec. 31, 2023
Canadian Nuclear Laboratories LTD [Member]
Defined Benefit Plan Disclosure [Line Items]
Unpaid receivables	$ 1,612,000	$ 2,389,000

Schedule of Segment Reporting I

Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
		Sep. 30, 2024		Sep. 30, 2023		Sep. 30, 2024		Sep. 30, 2023
Segment Reporting Information [Line Items]
Revenue from external customers		$ 16,812		$ 21,877		$ 44,415		$ 67,016
Intercompany revenues
Gross profit		1,334		4,549		(592)		12,074
Research and development		303		120		872		340
Interest income		292		146		679		445
Interest expense		(121)		(89)		(346)		(189)
Interest expense-financing fees		(18)		(36)		(47)		(80)
Depreciation and amortization		433		686		1,295		2,124
Segment income (loss)		(8,806)	[1]	246		(16,049)	[1]	448
Expenditures for segment assets		1,383	[2]	340	[3]	2,224	[2]	1,386	[3]
Treatment [Member]
Segment Reporting Information [Line Items]
Revenue from external customers		9,064		10,795		26,116		33,223
Services [Member]
Segment Reporting Information [Line Items]
Revenue from external customers		7,748		11,082		18,299		33,793
Operating Segments [Member] | Treatment [Member]
Segment Reporting Information [Line Items]
Revenue from external customers		9,064		10,795		26,116		33,223
Intercompany revenues		13		4		67		234
Gross profit		410		1,494		(839)		5,237
Research and development		205		102		609		260
Interest income		6				7
Interest expense		(37)		(23)		(107)		(68)
Interest expense-financing fees
Depreciation and amortization		370		584		1,104		1,745
Segment income (loss)		(4,902)		1,014		(7,416)		2,619
Expenditures for segment assets		1,203		333		1,820		1,376
Operating Segments [Member] | Services [Member]
Segment Reporting Information [Line Items]
Revenue from external customers		7,748		11,082		18,299		33,793
Intercompany revenues		23		88		52		124
Gross profit		924		3,055		247		6,837
Research and development		34		1		87		11
Interest income
Interest expense		(3)		(1)		(4)		(2)
Interest expense-financing fees
Depreciation and amortization		44		88		133		337
Segment income (loss)		(2,294)		1,120		(3,713)		2,933
Expenditures for segment assets		180		7		404		10
Operating Segments [Member] | Segments Total [Member]
Segment Reporting Information [Line Items]
Revenue from external customers		16,812		21,877		44,415		67,016
Intercompany revenues		36		92		119		358
Gross profit		1,334		4,549		(592)		12,074
Research and development		239		103		696		271
Interest income		6				7
Interest expense		(40)		(24)		(111)		(70)
Interest expense-financing fees
Depreciation and amortization		414		672		1,237		2,082
Segment income (loss)		(7,196)		2,134		(11,129)		5,552
Expenditures for segment assets		1,383		340		2,224		1,386
Intersegment Eliminations [Member] | Corporate Segment and Other Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	[4]
Intercompany revenues	[4]
Gross profit	[4]
Research and development	[4]	64		17		176		69
Interest income	[4]	286		146		672		445
Interest expense	[4]	(81)		(65)		(235)		(119)
Interest expense-financing fees	[4]	(18)		(36)		(47)		(80)
Depreciation and amortization	[4]	19		14		58		42
Segment income (loss)	[4]	(1,610)		(1,888)		(4,920)		(5,104)
Expenditures for segment assets	[4]
[1]Includes tax expense recorded in the amount of approximately $ 6,417,000 361,000 406,000 152,000 309,000

Schedule of Segment Reporting_2

Schedule of Segment Reporting Information (Details) (Parenthetical) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting [Abstract]
Financed portion amount in the purchase of capital expenditure	$ 361,000	$ 152,000	$ 406,000	$ 309,000
Income tax expense	$ 6,417,000	$ 254,000	$ 4,300,000	$ 482,000

Income Taxes (Details Narrative

Income Taxes (Details Narrative) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Income tax expense	$ 6,417,000	$ 254,000	$ 4,300,000	$ 482,000
Effective Income Tax Rate Reconciliation, Percent	268.60%	50.80%	36.60%	51.80%

Sale of Common Stock (Details N

Sale of Common Stock (Details Narrative) - USD ($)		3 Months Ended	9 Months Ended
	May 21, 2024	Jun. 30, 2024	Sep. 30, 2024
Class of Stock [Line Items]
Aggregate gross proceeds		$ 18,115,000
Measurement Input, Price Volatility [Member]
Class of Stock [Line Items]
Warrants and rights outstanding, measurement input	58.78
Measurement Input, Risk Free Interest Rate [Member]
Class of Stock [Line Items]
Warrants and rights outstanding, measurement input	4.53
Measurement Input, Expected Term [Member]
Class of Stock [Line Items]
Warrants and rights outstanding, term	5 years
Common Stock [Member]
Class of Stock [Line Items]
Number of shares issued			14,717
Placement Agents [Member]
Class of Stock [Line Items]
Cash fee, percentage	6%
Stock issuance cost paid	$ 1,200,000
Placement Agents [Member] | Common Stock [Member]
Class of Stock [Line Items]
Stock issuance cost paid	80,000
Placement Agents [Member] | Warrant [Member]
Class of Stock [Line Items]
Stock issuance cost paid	1,505,000
Stock issuance costs incurred	1,544,000
Cash proceeds from issuance of stock	$ 18,456,000
Common Stock [Member]
Class of Stock [Line Items]
Number of shares issued		2,051,282
Aggregate gross proceeds		$ 2,000
Common Stock [Member] | Placement Agents [Member]
Class of Stock [Line Items]
Warrants and rights outstanding	61,538
Warrant [Member] | Placement Agents [Member]
Class of Stock [Line Items]
Sale of stock, description	the aggregate number of Warrant Shares that may be acquired under the Placement Agents’ Warrants equal to 3.0% of the number of Shares sold in the registered direct offering, at an exercise price per share equal to $12.19, which is equal to approximately 125% of the price per share of the Shares sold in the Offering. Neither the Placement Agents’ Warrants nor the Warrant Shares have been registered under the Registration Statement or otherwise. The Placement Agents’ Warrants have a term of five years, are exercisable at any time and from time to time, in whole or in part, during the four and one-half (4 ½) year period commencing 180 days from the last date of closing of the Offering which was May 24, 2024, and are exercisable via “cashless exercise” in certain circumstances.
Fair value of warrants	$ 331,000
Securities Purchase Agreement [Member]
Class of Stock [Line Items]
Sale of stock price per share	$ 9.75
Aggregate gross proceeds	$ 20,000,000
Securities Purchase Agreement [Member] | Common Stock [Member]
Class of Stock [Line Items]
Number of shares issued	2,051,282

Subsequent Events (Details Narr

Subsequent Events (Details Narrative) - USD ($)	Nov. 12, 2024	May 08, 2024
Lender [Member]
Subsequent Event [Line Items]
Debt instrument, fee amount		$ 25,000
Subsequent Event [Member] | Lender [Member]
Subsequent Event [Line Items]
Debt instrument, fee amount	$ 12,500
Minimum [Member]
Subsequent Event [Line Items]
Liquidity minimum requirement		$ 3,000,000
Minimum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Liquidity minimum requirement	3,000,000
Minimum [Member] | June 29, 2025 to September 29, 2025 [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Liquidity minimum requirement	$ 3,000,000