Enservco (ENSV) 10-K 6 Jul 22 2021 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Jun. 05, 2022	Jun. 30, 2021
Document Information [Line Items]
Entity Central Index Key	0000319458
Entity Registrant Name	Enservco Corporation
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-36335
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	84-0811316
Entity Address, Address Line One	14133 County Road 9 1/2
Entity Address, City or Town	Longmont
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80504
City Area Code	303
Local Phone Number	333-3678
Title of 12(b) Security	Common stock, $0.005 par value
Trading Symbol	ENSV
Security Exchange Name	NYSEAMER
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 17,300,000
Entity Common Stock, Shares Outstanding		11,491,623
Auditor Name	Plante & Moran, PLLC
Auditor Location	Denver, CO
Auditor Firm ID	166

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 149	$ 1,467
Accounts receivable, net	2,845	1,733
Prepaid expenses and other current assets	2,185	858
Inventories	346	295
Assets held for sale	68	527
Total current assets	5,593	4,880
Property and equipment, net	16,173	20,317
Goodwill	546	546
Intangible assets, net	399	617
Right-of-use asset - finance, net	41	129
Right-of-use asset - operating, net	2,060	2,918
Other assets	336	423
Non-current assets of discontinued operations	0	353
TOTAL ASSETS	25,148	30,183
Current Liabilities:
Accounts payable and accrued liabilities	2,857	1,931
Senior revolving credit facility, related party (including future interest payable of $38 and $892, respectively - see Note 2 and Note 5)	8,698	1,593
Subordinated debt, related party (Note 2 and Note 5)	211	0
Lease liability - finance, current	20	65
Lease liability - operating, current	688	854
Current portion of long-term debt	58	100
Current liabilities of discontinued operations	0	31
Total current liabilities	12,532	4,574
Non-Current Liabilities:
Senior revolving credit facility, related party (including future interest payable of $0 and $485, respectively - see Note 2 and Note 5)	5,404	17,485
Subordinated debt, related party (Note 2 and Note 5)	0	1,180
Long-term debt, less current portion	54	2,052
Lease liability - finance, less current portion	23	55
Lease liability - operating, less current portion	1,496	2,185
Deferred tax liabilities	273	0
Other liabilities	24	88
Long-term liabilities of discontinued operations	0	9
Total non-current liabilities	7,274	23,054
TOTAL LIABILITIES	19,806	27,628
Commitments and Contingencies (Note 9)
Stockholders’ Equity:
Preferred stock, $0.005 par value, 10,000,000 shares authorized, no shares issued or outstanding	0	0
Common stock, $0.005 par value, 100,000,000 shares authorized; 11,439,191 and 6,307,868 shares issued as of December 31, 2021 and 2020, respectively; 6,907 shares of treasury stock as of December 31, 2021 and 2020; and 11,432,284 and 6,300,961 shares outstanding as of December 31, 2021 and 2020, respectively	57	32
Additional paid-in-capital	40,866	30,052
Accumulated deficit	(35,581)	(27,529)
Total stockholders’ equity	5,342	2,555
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 25,148	$ 30,183

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Senior revolving credit facility, interest payable current	$ 38	$ 892
Senior revolving credit facility, interest payable noncurrent	$ 0	$ 485
Preferred stock, par value (in dollars per share)	$ 0.005	$ 0.005
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.005	$ 0.005
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	11,439,191	6,307,868
Common stock, shares outstanding (in shares)	11,432,284	6,300,961
Treasury stock, shares (in shares)	6,907	6,907

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Revenue	$ 15,337,000	$ 15,683,000
Expenses:
Cost of revenue	17,339,000	17,211,000
Sales, general and administrative expenses	4,185,000	5,002,000
Severance and transition costs	7,000	145,000
(Gain) loss on disposal of equipment	(124,000)	47,000
Impairment loss	128,000	733,000
Depreciation and amortization	5,215,000	5,282,000
Total operating expenses	26,750,000	28,420,000
Loss from operations	(11,413,000)	(12,737,000)
Other income (expense):
Interest expense	(57,000)	(1,695,000)
Gain on restructuring of senior revolving credit facility (Note 5)	0	11,916,000
Other income	3,699,000	126,000
Total other income	3,642,000	10,347,000
Loss from continuing operations before taxes	(7,771,000)	(2,390,000)
Income tax expense	(273,000)	(12,000)
Loss from continuing operations	(8,044,000)	(2,402,000)
Loss from discontinued operations	(8,000)	(107,000)
Net loss	$ (8,052,000)	$ (2,509,000)
Loss from continuing operations per common share – basic and diluted (in dollars per share)	$ (0.74)	$ (0.57)
Loss from discontinued operations per common share – basic and diluted (in dollars per share)	0	(0.03)
Net loss per share – basic and diluted (in dollars per share)	$ (0.74)	$ (0.60)
Weighted average number of common shares outstanding – basic and diluted (in shares)	10,879	4,174
Production Services [Member]
Revenues:
Revenue	$ 9,012,000	$ 7,714,000
Expenses:
Cost of revenue	9,734,000	8,410,000
Depreciation and amortization	2,397,000	2,378,000
Completion Services [Member]
Revenues:
Revenue	6,325,000	7,969,000
Expenses:
Cost of revenue	7,605,000	8,801,000
Depreciation and amortization	$ 2,415,000	$ 2,512,000

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) shares in Thousands, $ in Thousands	At-the-market Offering [Member] Common Stock Outstanding [Member]	At-the-market Offering [Member] Additional Paid-in Capital [Member]	At-the-market Offering [Member] Retained Earnings [Member]	At-the-market Offering [Member]	Common Stock Outstanding [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2019					3,703
Balance at Dec. 31, 2019					$ 19	$ 22,325	$ (25,020)	$ (2,676)
Stock-based compensation, net of issuance costs					$ 0	392	0	392
Shares issued (in shares)	1,694				6
Shares issued	$ 8	$ 3,293	$ 0	$ 3,301
Shares issued to Cross River Partners, L.P. in subordinated debt and accrued interest conversion (Note 2) (in shares)					404
Shares issued to Cross River Partners, L.P. in subordinated debt and accrued interest conversion (Note 2)					$ 2	1,513	0	1,515
Shares and warrants issued to East West Bank in senior revolving credit facility debt restructuring (Note 2 and Note 5) (in shares)					533
Shares and warrants issued to East West Bank in senior revolving credit facility debt restructuring (Note 2 and Note 5)					$ 3	2,529	0	2,532
Restricted share cancellations (in shares)					(50)
Restricted share cancellations					$ 0	0	0	0
Additional shares issued due to rounding up of fractional shares in connection with reverse stock split (in shares)					11
Net loss					$ 0	0	(2,509)	(2,509)
Restricted share cancellations (in shares)					50
Balance (in shares) at Dec. 31, 2020					6,301
Balance at Dec. 31, 2020					$ 32	30,052	(27,529)	2,555
Stock-based compensation, net of issuance costs					$ 0	130	0	130
Shares issued (in shares)					4,200
Shares issued					$ 21	8,824	0	8,845
Shares issued to Cross River Partners, L.P. in subordinated debt and accrued interest conversion (Note 2) (in shares)					602
Shares issued to Cross River Partners, L.P. in subordinated debt and accrued interest conversion (Note 2)					$ 3	1,550	0	1,553
Restricted share cancellations (in shares)					1
Net loss					$ 0	0	(8,052)	(8,052)
Restricted share issuances (in shares)					330
Restricted share issuances					$ 1	310	0	311
Restricted share cancellations (in shares)					(1)
Balance (in shares) at Dec. 31, 2021					11,432
Balance at Dec. 31, 2021					$ 57	$ 40,866	$ (35,581)	$ 5,342

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
OPERATING ACTIVITIES:
Net loss	$ (8,052,000)	$ (2,509,000)
Loss from discontinued operations	(8,000)	(107,000)
Net loss from continuing operations	(8,044,000)	(2,402,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	5,215,000	5,282,000
(Gain) loss on disposal of equipment	(124,000)	47,000
Impairment loss	128,000	733,000
Board compensation issued in equity	311,000	0
Stock-based compensation	130,000	392,000
Amortization of debt issuance costs and discount	9,000	131,000
Income tax expense	273,000	0
Gain on restructuring of senior revolving credit facility	0	(11,916,000)
Gain on forgiveness of PPP loan (Note 5)	(1,964,000)	0
Gain on early termination of finance leases	0	(3,000)
Interest paid-in-kind on line of credit	0	326,000
Bad debt expense	268,000	140,000
Changes in operating assets and liabilities:
Accounts receivable	(1,380,000)	4,551,000
Inventories	(51,000)	103,000
Prepaid expenses and other current assets	(1,117,000)	157,000
Income taxes receivable	0	43,000
Amortization of operating lease assets	858,000	829,000
Other assets	320,000	1,000
Accounts payable and accrued liabilities	1,005,000	(2,272,000)
Operating lease liabilities	(855,000)	(771,000)
Other liabilities	(64,000)	54,000
Net cash used in operating activities - continuing operations	(4,778,000)	(4,575,000)
Net cash provided by operating activities - discontinued operations	4,000	132,000
Net cash used in operating activities	(4,774,000)	(4,443,000)
INVESTING ACTIVITIES:
Purchases of property and equipment	(593,000)	(361,000)
Proceeds from insurance claims	0	294,000
Proceeds from disposals of property and equipment	393,000	329,000
Net cash (used in) provided by investing activities - continuing operations	(200,000)	262,000
Net cash provided by investing activities - discontinued operations	0	765,000
Net cash (used in) provided by investing activities	(200,000)	1,027,000
FINANCING ACTIVITIES:
Gross proceeds from stock issuance	9,660,000	3,597,000
Stock issuance costs and registration fees	(815,000)	(296,000)
Net line of credit repayments	(701,000)	(795,000)
TDR accrued future interest payments	(770,000)	0
Payments of finance leases	(111,000)	(159,000)
Proceeds from sale of finance lease assets	0	67,000
Net cash provided by financing activities - continuing operations	3,658,000	4,220,000
Net cash used in financing activities - discontinued operations	(2,000)	0
Net cash provided by financing activities	3,656,000	4,220,000
Net (Decrease) Increase in Cash and Cash Equivalents	(1,318,000)	804,000
Cash and Cash Equivalents, beginning of period	1,467,000	663,000
Cash and Cash Equivalents, end of period	149,000	1,467,000
Supplemental Cash Flow Information:
Cash paid for interest	822,000	1,414,000
Cash paid for taxes	0	2,000
Supplemental Disclosure of Non-cash Investing and Financing Activities:
Non-cash reduction of debt in connection with restructuring of senior revolving credit facility	0	16,000,000
Non-cash issuance of Company common stock and warrants in connection with restructuring of senior revolving credit facility	0	2,532,000
Non-cash conversion of subordinated debt and accrued interest to Company common stock	1,312,000	1,515,000
Non-cash conversion of accrued interest to senior revolving credit facility	0
Non-cash conversion of unamortized subordinated debt discount	61,000	0
Deferred loan costs paid directly by related party in lieu of subordinated note payable	210,000	0
Equipment Term Loan [Member]
FINANCING ACTIVITIES:
Term loan repayments	(3,505,000)	0
Paycheck Protection Program CARES Act [Member]
FINANCING ACTIVITIES:
Proceeds from PPP loan (Note 5)	0	1,940,000
Other Long-term Debt [Member]
FINANCING ACTIVITIES:
Term loan repayments	(100,000)	(134,000)
Conversion of Subordinated Debt to Equity[Member]
Adjustments to reconcile net loss to net cash used in operating activities:
Fair value of warrant issued upon conversion of subordinated debt to equity	$ 304,000	$ 0

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	Note 1 – Basis of Presentation Enservco Corporation (" Enservco") through its wholly owned subsidiaries (collectively referred to as the "Company," "we" or "us") provides various services to the domestic onshore oil and natural gas industry. These services include hot oiling and acidizing ("Production Services") and frac water heating ("Completion and Other Services"). The accompanying consolidated financial statements have been derived from the accoun ting records of Enservco Corporation, Heat Waves Hot Oil Service LLC ("Heat Waves"), Dillco Fluid Service, Inc. ("Dillco"), Heat Waves Water Management LLC ("HWWM"), and Adler Hot Oil Service, LLC ("Adler") (collectively, the "Company") as of December 31, 2021 2020 The below table provides an overview of the Company ’s current ownership hierarchy: Name State of Formation Ownership Business Heat Waves Hot Oil Service LLC Colorado 100% by Enservco Oil and natural gas well services, including logistics and stimulation. Adler Hot Oil Service, LLC Delaware 100% by Enservco Operations integrated into Heat Waves during 2019. Adler Hot Oil Service, LLC was dissolved during the second quarter of 2021. Heat Waves Water Management LLC Colorado 100% by Enservco Discontinued operations in 2019. Heat Waves Water Management LLC was dissolved during the second quarter of 2021. Dillco Fluid Service, Inc. Kansas 100% by Enservco Discontinued operation in 2018. Dillco Fluid Service, Inc. was dissolved during the second quarter of 2021. HE Services LLC Nevada 100% by Heat Waves No active business operations. Owned construction equipment used by Heat Waves. HE Services LLC was dissolved on December 23, 2020. The accompanying consolidated financial statements were prepared in accordance with accounting principles generally accepted in the United States ("GAAP"). All significant intercompany balances and transactions have been eliminated in the accompanying consolidated financial statements.

Note 2 - Summary of Significant

Note 2 - Summary of Significant Accounting Policies and Recent Developments	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Significant Accounting Policies [Text Block]	2 – Recent Developments and Going Concern On March 24, 2022, March 18, 2022 2017 five Our financial statements have been prepared on the going concern basis, which contemplates the continuity of normal business activities and the realization of assets and settlement of liabilities in the normal course of business. For the twelve December 31, 2021 2020, December 31, 2021, Note 5 470 10 45, December 31, 2021. one December 31, 2021, 470 10 45 December 31, 2020, 2020, not one ee Note 5 for a description of the Refinancing. Cash and Cash Equivalents The Company considers all highly liquid instruments purchased with an original maturity of three ess to be cash equivalents. The Company continually monitors its positions with, and the credit quality of, the financial institutions with which it invests. The Company maintains its excess cash in various financial institutio ns, where deposits may exceed fede Accounts Receivable Accounts receivable are stated at the amounts billed to customers, net of an allowance fo r uncollectible accounts. The Company provides an allowance for uncollectible accounts based on a review of outstanding receivables, historical collection information and existing economic conditions. The allowance for uncollectible amounts is continually reviewed and adjusted to maintain the allowance at a level considered adequate to cover future losses. The allowance is management's best estimate of uncollectible amounts and is determined based on historical collection experience related to accounts receivable coupled with a review of the current s December 31, 2021 and 2020, December 31, 2021 2020, spectively, to bad debt expense. Concentrations As of December 31, 2021, 10% December 31, 2021. hese concentrations were enhanced by the merger of three 2021. December 31, 2020, 10% December 31, 2020. Inventories Inventory consists primarily of propane, diesel fuel and chemicals that are used in the servicing of oil wells and is carried at the lower of cost or net realizable value in accordance with the first first December 31, 2021 2020, 0 Property and Equipment Property and equipment consists of (i) trucks, trailers and pickups; (ii) water transfer pumps, pipe, lay flat hose, trailers, and other support equipment; (iii) real property which includes land and buildings used for office and shop facilities and wells u sed for the disposal of water; (iv) other equipment such as tools used for maintaining and repairing vehicles; and (v) office furniture and fixtures and computer equipment. Property and equipment is stated at cost less accumulated depreciation. The Company capitalizes interest on certain qualifying assets that are undergoing activities to prepare them for their intended use. Interest costs incurred during the fabrication period are capitalized and amortized over the life of the assets. The Company charges repairs and maintenance against income when incurred and capitalizes renewals and betterments, which extend the remaining useful life, expand the capacity or efficiency of the assets. Depreciation is recorded on a straight-line basis over estimated useful lives ranging from 5 to 30 years. Any difference between net book value of the property and equipment and the proceeds of an assets ’ sale, or settlement of an insurance claim, is recorded as a gain or loss in the Company’s consolidated statements of operations. Leases The Company assesses whether an arrangement is a lease at inception. Leases with an initial term of twelve not not not The Company conducts a m ajor part of its operations from leased facilities not The Company amortizes leasehold improvements over the shorter of the life of the lease or the life of the improvements. The Company leases trucks and equipment in the normal course of business, which may le; there are no Long-Lived Assets The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset may not g the analysis of impairment. During the first 2020, 19 19 30% first 2021 2020, December 31, 2021 December 31, 2020. December 31, 2021. fourth 2021 The Company determined that there was no impairment of its long-lived assets held and used for the years ended December 31, 2021 2020. For a description of impairment losses recorded during the years ended December 31, 2021 2020 Assets Held for Sale The Company classifies long-lived assets to be sold as held for sale in the period in which all the following criteria are met: (i) management, having the authority to approve the action, commits to a plan to sell the asset or disposal group; (ii) the asset or disposal group is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such assets; (iii) an active program to locate a buyer and other actions required to complete the plan to sell the asset or disposal group have been initiated; (iv) the sale of the asset or disposal group is probable, and transfer of the asset or disposal group is expected to qualify for recognition as a completed sale within one one We initially measure a long-lived asset or disposal group that is classified as held for sale at the lower of its carrying value or fair value less any costs to sell. Any loss resulting from this measurement is recognized in the period in which the held-for-sale criteria are met. Conversely, gains are not not December 31, 2021 2020, Upon determining that a long-lived asset or disposal group meets the criteria to be classified as held for sale, the Company ceases depreciation and reports long-lived assets and/or the assets and liabilities of the disposal group, if material, in the line item "Assets held for sale" in our consolidated balance sheets. Goodwill and Other Intangible Assets Goodwill represents the excess purchase price over the fair value of identifiable assets received attributable to business acquisitions and combinations. Goodwill and other intangible assets are measured for impairment at least annually and/or whenever events and circumstances arise that indicate impairment may The Company completed its annual goodwill impairment test as of December 31, 2021. As a result of performing the annual test of impairment, the Company recognized no impairment loss for its goodwill during the years ended December 31, 2021 2020. Revenue Recognition The Company evaluates revenue when we can identify the contract with the customer, the performance obligations in the contract, the transaction price, and we are certain that the performance obligations have been met. Revenue is recognized when the service has been provided to the customer. The vast majority of the Company's services and product offerings are short-term in nature. The time between invoicing and when payment is due under these arrangements is generally thirty sixty not The Company’s agreements with its customers are often referred to as "price sheets" and sometimes provide pricing for multiple services. However, these agreements generally do not not Revenue is recognized for certain projects that take more than one Disaggregation of Revenue S ee Note 10 for disaggre Earning s (Loss) Per Share Earnings (Loss) per Common Share - Basic is computed by dividing net income (loss) by the weighted average number of common shares outstanding for the period. Earnings (Loss) per Common Share - Diluted is calculated by dividing net income (loss) by the diluted weigh ted average number of common shares outstanding for the period. The diluted weighted average number of common shares outstanding for the period is computed using the treasury stock method for common stock that may As of December 31, 2021 2020, were outstanding stock options, unvested restricted stock awards and warrants to acquire an aggrega te of 1,374,640 and 1 ,079,629 shares of Company common stock, respectively, which have a potentially dilutive impact on earnings (loss) per share. As of December 31, 2021 and 2020, these outstanding stock options, unvested restricted stock awards and warrants had no December 31, 2021 2020, not not December 31, 2021 2020. Offering Costs The Company complies with the requirements of ASC 340 10 S99 1 5A, Expenses of Offering December 31, 2021 2020, Employee Retention Tax Credits The Employee Retention Credits program, a provision of the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act"), was extended through December 31, 2021 November 15, 2021, September 30, 2021. 2021, first three 2021. December 31, 2021, Income Taxes The Company recognizes deferred tax liabilities and assets based on the differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements that will result in taxable or deductible amounts in future years (see Note 6 ) . Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect of a change in tax rates on deferred tax assets and liabilities will be recognized in income in the period that includes the enactment date. A deferred tax asset or liability that is not related to an asset or liability for financial reporting is classified according to the expected reversal date. The Company records a valuation allowance to reduce deferred tax assets to an amount that it believes is more likely than not expected to be realized. The Company accounts for any uncertainty in income taxes by recognizing the tax benefit from an uncertain tax position only if, in the Company's opinion, it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The Company measures the tax benefits recognized in the financial statements from such a position based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate resolution. The application of income tax law is inherently complex. Laws and regulations in this area are voluminous and are often ambiguous. As such, the Company is required to make many subjective assumptions and judgments regarding income tax exposures. Interpretations of and guidance surrounding income tax law and regulations change over time and may result in changes to the Company’s subjective assumptions and judgments which can materially affect amounts recognized in the consolidated balance sheets and consolidated statements of operations. The result of the reassessment of the Company’s tax positions did not have an impact on the consolidated financial statements. Penalties and interest associated with tax positions are recorded in the peri od assessed within the line item "Other incom e" in the consolidated statements of operations. The Company files income tax returns in the United States and in the states in which it conducts its business operations. The Company’s United States federal income tax filings for tax years 2018 through 2021 remain open to examination. In general, the Company’s various state tax filings remain open for tax years 2017 through 2021. Fair Value The Company follows authoritative guidance that applies to all financial assets and liabilities required to be measured and reported on a fair value basis. The Company also applies the guidance to non-financial assets and liabilities measured at fair value on a nonrecurring basis, including non-competition agreements and goodwill. The guidance defines fair value as the price that would be received to sell an asset or paid to transfer a liability ("exit price") in an orderly transaction between market participants at the measurement date. The guidance establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and mini Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions of what market participants would use in pricing the asset or liability based on the best information available in the circumstances. Beginning in 2017, not December 31, 2021 or 2020. The hierarchy is broken down into three Level 1: Quoted prices are available in active markets for identical assets or liabilities; Level 2: Quoted prices in active markets for similar assets and liabilities that are observable for the asset or liability; or Level 3: Unobservable pricing inputs that are generally less observable from objective sources, such as discounted cash flow models or valuations. Stock-Based Compensation Stock-based compensation cost is measured at the date of grant, based on the calculated fair value of the award as described below, and is recognized over the requisite service period, which is generally the vesting period of the equity grant. The Company uses the Black-Scholes pricing model as a method for determining the estimated grant date fair value for all stock options awarded to employees, independent contractors, officers and directors. The expected term of the options is based upon evaluation of historical and expected exercise behavior. The risk-free interest rate is based upon United States Treasury rates at the date of grant with maturity dates approximately equal to the expected life of the grant. Volatility is determined upon historical volatility of our stock and adjusted if future volatility is expected to vary from historical experience. The dividend yield is assumed to be none not The Company uses a Lattice model to determine the fair value of certain warrants. The expected term used was the remaining contractual term. Expected volatility is based upon historical volatility over a term consistent with the remaining term. The risk-free interest rate is derived from the yield on zero The Company used the market value of Company stock to determine the fair value of the performance-based restricted stock awar ded in 2021. The Company used a Lattice model to determ ine the fair value of market-based restricted stock awarded in 2021 2020. Management Estimates The preparation of the Company ’s consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates include the realization of accounts receivable, evaluation of impairment of long-lived assets, stock-based compensation expense, provision for income taxes, and the valuation of warrant liabilities and deferred taxes. Actual results could differ from those estimates. Contingent Liabilities From time-to-time, the Company will have contingent liabilities that arise in the course of business, usually as it pertains to certain lawsuits in which the Company is involved. When a future contingent liability becomes both probable and estimable, the Company will record a liability for the estimated amount, as well as any offsetting receivables in the event the claim is probable to be covered by an insurance policy. In the event there is a range of outcomes and no Classification and Valuation of Warrants The Company analyzes warrant instruments under ASC 480 10, Distinguishing Liabilities from Equity None The Company uses a Lattice model to determine the fair value of certain warrants. The expected term used was the remaining contractual term. Expected volatility is based upon historical volatility over a term consistent with the remaining term. The risk-free interest rate is derived from the yield on zero zero Going Concern The Company utilizes a cash forecast model to evaluate the ability of future cash flows to fund continuing operations. The Company analyzes projected cash flows to determine if they are sufficient to fund the operations and obligations of the Company for a period of time that extends twelve Reclassifications Certain prior period amounts have been reclassified for comparative purposes to conform to the current presentation. These reclassifications have no Accounting Pronouncements Recently Adopted In January 2017, 2017 04, Intangibles—Goodwill and Other (Topic 350 2017 04 . December 15, 2019. 2017 04 January 1, 2020 2017 04. Recently Issued In June 2016, 2016 13, Financial Statements - Credit Losses (Topic 326 December 15, 2022. not 2016 13

Note 3 - Property and Equipment

Note 3 - Property and Equipment	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	Note 3 – Property and equipment consist of the following (in thousands): December 31, 2021 2020 Trucks and vehicles $ 54,670 $ 57,224 Other equipment 2,059 1,319 Buildings and improvements 3,140 3,176 Land 378 378 Total property and equipment 60,247 62,097 Accumulated depreciation (44,074 ) (41,780 ) Property and equipment, net $ 16,173 $ 20,317 For the years ended December 31, 2021 2020, $ 4.9 million in depreciation expense.

Note 4 - Intangible Assets

Note 4 - Intangible Assets	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Intangible Assets Disclosure [Text Block]	Note 4 – Intangible Assets The components of our intangible assets as of December 31, 2021 2020 December 31, 2021 2020 Customer relationships $ 626 $ 626 Patents and trademarks 441 441 Total intangible assets 1,067 1,067 Accumulated amortization (668 ) (450 ) Net carrying value $ 399 $ 617 The useful lives of our intangible assets are estimated to be five December 31, 2021 2020 The following table represents the amortization expense for the next five 2022 2023 2024 2025 2026 Customer relationships $ 125 $ 104 $ - $ - $ - Patents and trademarks 93 77 - - - Total intangible asset amortization expense $ 218 $ 181 $ - $ - $ -

Note 5 - Debt

Note 5 - Debt	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 5 – Debt East West Bank Revolving Credit Facility The 2017 Note 2 January 1, 2021. April 26, 2021 ( November 15, 2021 October 15, 2022. first October 15, 2022, Under the amended 2017 ( 1 December 31, 2021, not ( 2 three three March 31, 2021, seventy ( 3 On February 11, 2021, December 31, 2021, December 31, 2021, 2017 December 31, 2021 470 60, Troubled Debt Restructuring by Debtors During the fourth 2021, three October 31, 2021, three November 30, 2021. not 70% three On November 12, 2021, October three November December 2021 not three November 30, 2021, November December 31, 2021 November December 2021 December 31, 2021. January 31, 2022 March 31, 2022, three April 30, 2022 September 30, 2022, three April 30, 2022 May 31, 2022, February March 2022. nt, the Company paid East October In connection with amending the 2017 September 23, 2020, five 533,334 533,334 March 23, 2021. 1,000,000 September 23, 2021 September 23, 2025. December 31, 2020, $16.0 December 31, 2020. In December 2021, no December 23, 2021. The Refinancing On March 24, 2022, March 18, 2022 As part of the Refinancing, on March 24, 2022, 51 fifty-one fter 12 Additionally, as part of the Refinancing and in accordance with ASC 470 10 45, December 31, 2021. twelve December 31, 2021. 470 10 45. In addition, as part of the Re March 24, 2022, “2022 18 The Utica Facility and the Receivables Financing are subject to an Intercreditor Agreement dated on or about March 24, 2022 Also, as part of the Refinancing, on March 22, 2022, six first June 30, 2022, five ten five Subordinated Debt with Related Party On December 21, 2021, third June 21, 2022, December 31, 2021, Subsequent to December 31, 2021, not third Paycheck Protection Program On April 10, 2020, March 27, 2020, On November 9, 2020, July 8, 2021, December 31, 2021. Notes Payable Long-term debt consists of the following (in thousands): December 31, 2021 2020 Senior Revolving Credit Facility with related party. All future interest through October 15, 2021 accrued to loan pursuant to the Fifth Amendment. Interest at 8.25 5.25 3 10 October 15, 2022 $ 14,102 $ 19,078 Subordinated Promissory Note with related party. Non-interest bearing. $ 10 June 21, 2022 220 - Paycheck Protection Loan. Interest is at 1 April 10, 2022 - 1,940 Subordinated Promissory Note with related party. Interest at 10 - 1,250 Real Estate Loan for a facility in North Dakota. Interest at 5.75 5,255 112 167 Vehicle loans for three pickups. Interest at 8.59 3,966 - 31 Note payable to the seller of Heat Waves. The note was garnished by the Internal Revenue Service (" IRS") in 2009 and is due on demand; paid in annual installments of $ 36,000 - 14 Total long-term debt 14,434 22,480 Less debt discount (9 ) (70 ) Less current portion (8,967 ) (1,693 ) Long-term debt, net of debt discount and current portion $ 5,458 $ 20,717 Aggregate contractual principal maturities of debt are as follows (in thousands): For the year ended December 31, 2022 $ 8,976 2023 1,310 2024 1,468 2025 1,716 2026 964 Total $ 14,434

Note 6 - Income Taxes

Note 6 - Income Taxes	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 6 – Income Taxes Income tax expense consists of the following (in thousands): December 31, 2021 2020 Current: Federal $ - $ - State - 12 Total current - 12 Deferred: Federal 234 - State 39 - Total deferred 273 - Total income tax expense $ 273 $ 12 A reconciliation of computed income taxes by applying the statutory federal income tax rate of 21% to loss from continuing operations before taxes to income tax expense as presented in our consolidated statements of operations for the years ended December 31, 2021 2020 December 31, 2021 2020 Computed income taxes at 21% $ (1,634 ) $ (502 ) (Decrease) increase in income taxes resulting from: State and local income taxes, net of federal impact (272 ) (72 ) Change in valuation allowance 2,892 571 True-up adjustment (238 ) - Stock-based compensation - 1 Paycheck Protection Plan loan forgiveness (481 ) - Other 6 14 Income tax expense $ 273 $ 12 In assessing the realization of deferred tax assets, management considers whether it is more likely than not not realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income, and tax planning strategies in making this assessment. During the first 2021, 382, December 31, 2021, $273,000 no December 31, 2021. December 31, 2020. We have a requirement of reporting of taxes based on tax positions which meet a "more likely than not" not Differences between financial and tax reporting which do not December 31, 2021 2020, not The Company has United States federal and state net operating loss carryforwards ("NOLs"), each of which were approximately $35.5 million as of December 31, 2021, 2035 2037. 382 not The components of deferred income taxes for the years ended December 31, 2021 2020 December 31, 2021 2020 Deferred tax assets: Reserves and accruals $ 603 $ 183 Amortization 60 53 Capital losses and other 12 13 Non-qualified stock option expense 2 194 Loss carryforwards 8,700 7,066 Total deferred tax assets 9,377 7,509 Valuation allowance (7,649 ) (4,757 ) Net deferred tax assets 1,728 2,752 Deferred tax liabilities: Depreciation (2,001 ) (2,752 ) Total deferred tax liabilities (2,001 ) (2,752 ) Net deferred tax liabilities $ (273 ) $ - The Company uses significant judgment in forming conclusions regarding the recoverability of its deferred tax assets and evaluates all available positive and negative evidence to determine if it is more likely than not not $4.8 million as of December 31, 2021 2020, It is possible that the relative weight of positive and negative evidence regarding the realization of deferred tax assets may ’s valuation allowance. Such a change could result in a material increase or decrease to income tax expense in the period the assessment was made. The Company classifies penalty and interest expense related to income tax liabilities as other ex pense, which is presented in the line item "Other income" on the consolidated statements of operations. The Company did not December 31, 2021 2020, The Company files tax re turns in various states in the United States, including but not 2018 2021 remain open to examination. In general, the Company’s various state tax filings remain open for tax years 2017 2021.

Note 7 - Stockholders' Equity

Note 7 - Stockholders' Equity	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	Note 7 – Stockholders' Equity Conversion of Subordinated Debt to Equity On August 13, 2020, In a separate transaction on February 11, 2021, one February 11, 2022 February 11, 2026. The total fair value of the warrant and loss on extinguishment of the subordinated debt with this related party was $304,000, which was recorded to Other income (expense) in the first 2021. Warrants On November 11, 2019, one five November 11, 2024. On September 23, 2020, one five one September 23, 2021 September 23, 2025. On February 11, 2021, five one February 11, 2022 February 11, 2026. Each grant of warrants granted to Cross River was reviewed and approved by the independent directors of the Company. On April 12, 2021, may A summary of warrant activity for the years ended December 31, 2021 2020 Weighted Average Weighted Average Remaining Warrants Shares Exercise Price Contractual Life (Years) Outstanding as of January 1, 2020 43,667 $ 3.34 4.72 Issued 1,000,000 3.75 4.73 Outstanding as of December 31, 2020 1,043,667 $ 3.73 4.69 Issued 150,418 2.51 4.12 Expired (2,000 ) 10.50 - Outstanding as of December 31, 2021 1,192,085 $ 3.57 3.75 Exercisable as of December 31, 2021 1,041,667 $ 3.72 3.70

Note 8 - Stock Options and Rest

Note 8 - Stock Options and Restricted Stock	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	Note 8 – Stock Options and Restricted Stock Stock Options On July 27, 2010, ’s Board adopted the 2010 2010 2010 January 1, 2016, 2010 one three five 2010 2010 December 31, 2021, no under the 2010 On July 18, 2016, 2016 2016 September 29, 2016. may 2016 2010 December 31, 2021, ase 1,334 sha s of 181,221 that re 2016 During the years ended December 31, 2021 2020, The following is a summary of stock options activity for all equity plans for the years ended December 31, 2021 2020 Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Outstanding as of January 1, 2020 129,689 $ 8.45 1.95 Forfeited or expired (118,120 ) 8.54 - Outstanding as of December 31, 2020 11,569 $ 5.87 0.53 Forfeited or expired (10,235 ) 5.91 - Outstanding as of December 31, 2021 1,334 $ 5.55 0.42 Vested as of December 31, 2021 1,334 $ 5.55 0.42 Exercisable as of December 31, 2021 1,334 $ 5.55 0.42 There was no aggregate intrinsic value (the difference between the estimated fair value of the Company ’s common stock on December 31, 2021 During the years ended December 31, 2021 2020, nized stock-based compensation costs for stock options of $0 and $3,000, respectively, in the line item "Sales, general and administrative expenses" in the consolidated statements of operations. A summary of the status of non-vested shares underlying the options are presented below: Shares Weighted Average Grant Date Fair Value Non-vested as of January 1, 2020 3,533 $ 3.30 Vested (1,755 ) 3.36 Forfeited (1,778 ) 19.29 Non-vested as of December 31, 2020 - $ - Vested - - Forfeited - - Non-vested as of December 31, 2021 - $ - As of December 31, 2021, compensation costs related to non-vested shares under the Company's stock option plans. Restricted Stock Restricted shares issued pursuant to restricted stock awards under the 2016 three may not A summary of the restricted stock activity is presented below: Shares Weighted Average Grant Date Fair Value Restricted shares as of January 1, 2020 133,756 8.25 Granted 10,001 2.49 Vested (69,777 ) 6.56 Forfeited (49,587 ) 8.05 Restricted shares as of December 31, 2020 24,393 7.32 Granted 165,000 1.05 Vested (6,505 ) 7.94 Forfeited (1,667 ) 8.92 Restricted shares as of December 31, 2021 181,221 1.58 During the years ended December 31, 2021 2020, second 2020. 2020, 2020. The following table sets forth the weighted average outstanding of potentially dilutive instruments for the years ended December 31, 2021 2020: For the Year Ended December 31, 2021 2020 Stock options 3,621 93,747 Restricted stock 179,351 58,220 Warrants 1,175,719 314,158 Weighted average 1,358,691 466,125

Note 9 - Commitments and Contin

Note 9 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 9 – Commitments and Contingencies As of December 31, 2021, June 2026. Operating Leases Finance Leases For the year ended December 31, 2022 $ 799 $ 21 2023 641 14 2024 465 10 2025 354 - 2026 179 - Thereafter - - Total future lease commitments 2,438 45 Impact of discounting (254 ) (2 ) Discounted value of lease obligations $ 2,184 $ 43 The following table summarizes the components of our gross operating and finance lease costs incurred during the years ended December 31, 2021 2020 For the Year Ended December 31, 2021 2020 Operating lease expense: Current lease cost $ 82 $ 55 Long-term lease cost 1,026 1,107 Total operating lease cost $ 1,108 $ 1,162 Finance lease expense: Amortization of right-of-use assets $ 64 $ 189 Interest on lease liabilities 6 19 Total finance lease cost $ 70 $ 208 Our weighted-average lease term and discount rate used during the years ended December 31, 2021 2020 For the Year Ended December 31, 2021 2020 Operating: Weighted-average lease term (years) 3.42 4.08 Weighted-average discount rate 6.09 % 6.08 % Finance: Weighted-average lease term (years) 2.35 2.09 Weighted-average discount rate 5.67 % 5.94 % Self-Insurance In June 2015, first December 31, 2021 2020, December 31, 2020. December 31, 2021, Effective January 1, 2021, no Effective April 1, 2015, March 31, 2018. December 31, 2021, not December 31, 2017, mber 31, 2021 September 2020, fourth 2021, no fourth 2021, first second 2022. Effective April 1, 2018, no Litigation On November 8, 2021, two November 19, 2019. not On November 22, 2021, not December 31, 2021, not

Note 10 - Segment Reporting

Note 10 - Segment Reporting	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 10 – Enservco’s reportable operating segments are Production Services and Completion and Other Services. These segments have been selected based on management’s resource allocation and performance assessment in making decisions regarding the Company. The following is a description of the segments: Production Services This segment utilizes a fleet of hot oiling trucks and acidizing units to provide maintenance services to the domestic oil and gas industry. These services include hot oiling services and acidizing services. Hot oiling is utilized by customers to remove paraffins from wellbores, pipes and vessels. Acidizing services are utilized by customers to clean reservoir surfaces and increase flow rates. Completion and Other Services This segment utilizes a fleet of frac water heating units to provide frac water heating services and related support services to the domestic oil and gas industry. These services also include other services for other industries, which consist primarily of hauling and transport of materials and heat treating for customers. Frac water heating is utilized by customers during the completion of oil and gas wells. Unallocated This segment includes general overhead expenses and assets associated with managing all reportable operating segments which have not The following tables set forth certain financial information with respect to Enservco ’s reportable segments (in thousands): Production Services Completion and Other Services Unallocated Total For the Year Ended December 31, 2021: Revenues $ 9,012 $ 6,325 $ - $ 15,337 Cost of revenues 9,734 7,605 - 17,339 Segment loss $ (722 ) $ (1,280 ) $ - $ (2,002 ) Depreciatio n and amortization $ 2,397 $ 2,415 $ 403 $ 5,215 Capital exp enditures $ 306 $ 276 $ 11 $ 593 Identifiable assets (1) $ 12,357 $ 9,007 $ 505 $ 21,869 For the Year Ended December 31, 2020: Revenues $ 7,714 $ 7,969 $ - $ 15,683 Cost of revenues 8,410 8,801 - 17,211 Segment loss $ (696 ) $ (832 ) $ - $ (1,528 ) Depreciatio n and amortization $ 2,378 $ 2,512 $ 392 $ 5,282 Capital exp enditures $ 176 $ 185 $ - $ 361 Identifiable assets (1) $ 12,353 $ 13,050 $ 939 $ 26,342 ( 1 Identifiable assets is calculated by summing the balances of accounts receivable, net; inventories; property and equipment, net; net right-of-use lease assets; assets held for sale; and other assets. The following table reconcile s the segment losses reported above to the loss from operations reported in the consolidated statements of operations (in thousands): For the Year Ended December 31, 2021 2020 Segment loss $ (2,002 ) $ (1,528 ) Sales, general and administrative expenses (4,185 ) (5,002 ) Severance and transition costs (7 ) (145 ) Gain (loss) from disposal of equipment 124 (47 ) Impairment loss (128 ) (733 ) Depreciation and amortization (5,215 ) (5,282 ) Loss from operations $ (11,413 ) $ (12,737 ) Geographic Areas The Company only conducts business in the United States, in what it believes are three three December 31, 2021 2020 For the Year Ended December 31, 2021 2020 BY GEOGRAPHY: Production Services: Rocky Mountain Region (1) $ 2,213 $ 2,689 Central USA Region (2) 6,158 4,552 Eastern USA Region (3) 641 473 Total Production Services 9,012 7,714 Completion and Other Services: Rocky Mountain Region (1) 4,521 6,601 Central USA Region (2) 128 108 Eastern USA Region (3) 1,676 1,260 Total Completion and Other Services 6,325 7,969 Total Revenues $ 15,337 $ 15,683 ( 1 Includes the DJ Basin/Niobrara field (northeastern Colorado and southeastern Wyoming), the San Juan Basin (southeastern Colorado and northeastern New Mexico), the Powder River and Green River Basins (northeastern and southwestern Wyoming), the Bakken area (western North Dakota and eastern Montana). ( 2 Includes the Eagle Ford Shale in southern Texas and the East Texas Oilfield beginning during the second 2021. ( 3 Consists of the southern region of the Marcellus Shale formation (southwestern Pennsylvania and northern West Virginia) and the Utica Shale formation (eastern Ohio).

Note 11 - Subsequent Events

Note 11 - Subsequent Events	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Subsequent Events [Text Block]	Note 11 – Cross River Working Capital Note On March 9, 2022, February 18, 2022 March 9, 2022 ( Cross River will also be paid a loan fee of $15,000 upon repayment of the subordinated debt, which is in substance interest. October 16, 2022; March 24, 2022 Restatements of 2021 10 On March 22, 2022, March 31, 2021, June 30, 2021 September 30, 2021 ( no third 10 No. 1s" no first 2022, not may On April 14, 2022, March 31, 2021, June 30, 2021 September 30, 2021 ( no first 2021. second 10 No. 2s" no Class Action Litigation On May 23, 2022, 10 March 31, 2021, June 30, 2021, September 30, 2021

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Recent Developments and Going Concern [Policy Text Block]	Recent Developments and Going Concern On March 24, 2022, March 18, 2022 2017 five Our financial statements have been prepared on the going concern basis, which contemplates the continuity of normal business activities and the realization of assets and settlement of liabilities in the normal course of business. For the twelve December 31, 2021 2020, December 31, 2021, Note 5 470 10 45, December 31, 2021. one December 31, 2021, 470 10 45 December 31, 2020, 2020, not one ee Note 5 for a description of the Refinancing.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash Equivalents The Company considers all highly liquid instruments purchased with an original maturity of three ess to be cash equivalents. The Company continually monitors its positions with, and the credit quality of, the financial institutions with which it invests. The Company maintains its excess cash in various financial institutio ns, where deposits may exceed fede
Accounts Receivable [Policy Text Block]	Accounts Receivable Accounts receivable are stated at the amounts billed to customers, net of an allowance fo r uncollectible accounts. The Company provides an allowance for uncollectible accounts based on a review of outstanding receivables, historical collection information and existing economic conditions. The allowance for uncollectible amounts is continually reviewed and adjusted to maintain the allowance at a level considered adequate to cover future losses. The allowance is management's best estimate of uncollectible amounts and is determined based on historical collection experience related to accounts receivable coupled with a review of the current s December 31, 2021 and 2020, December 31, 2021 2020, spectively, to bad debt expense.
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentrations As of December 31, 2021, 10% December 31, 2021. hese concentrations were enhanced by the merger of three 2021. December 31, 2020, 10% December 31, 2020.
Inventory, Policy [Policy Text Block]	Inventories Inventory consists primarily of propane, diesel fuel and chemicals that are used in the servicing of oil wells and is carried at the lower of cost or net realizable value in accordance with the first first December 31, 2021 2020, 0
Property, Plant and Equipment, Policy [Policy Text Block]	Property and Equipment Property and equipment consists of (i) trucks, trailers and pickups; (ii) water transfer pumps, pipe, lay flat hose, trailers, and other support equipment; (iii) real property which includes land and buildings used for office and shop facilities and wells u sed for the disposal of water; (iv) other equipment such as tools used for maintaining and repairing vehicles; and (v) office furniture and fixtures and computer equipment. Property and equipment is stated at cost less accumulated depreciation. The Company capitalizes interest on certain qualifying assets that are undergoing activities to prepare them for their intended use. Interest costs incurred during the fabrication period are capitalized and amortized over the life of the assets. The Company charges repairs and maintenance against income when incurred and capitalizes renewals and betterments, which extend the remaining useful life, expand the capacity or efficiency of the assets. Depreciation is recorded on a straight-line basis over estimated useful lives ranging from 5 to 30 years. Any difference between net book value of the property and equipment and the proceeds of an assets ’ sale, or settlement of an insurance claim, is recorded as a gain or loss in the Company’s consolidated statements of operations.
Lessee, Leases [Policy Text Block]	Leases The Company assesses whether an arrangement is a lease at inception. Leases with an initial term of twelve not not not The Company conducts a m ajor part of its operations from leased facilities not The Company amortizes leasehold improvements over the shorter of the life of the lease or the life of the improvements. The Company leases trucks and equipment in the normal course of business, which may le; there are no
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Long-Lived Assets The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset may not g the analysis of impairment. During the first 2020, 19 19 30% first 2021 2020, December 31, 2021 December 31, 2020. December 31, 2021. fourth 2021 The Company determined that there was no impairment of its long-lived assets held and used for the years ended December 31, 2021 2020. For a description of impairment losses recorded during the years ended December 31, 2021 2020 Assets Held for Sale The Company classifies long-lived assets to be sold as held for sale in the period in which all the following criteria are met: (i) management, having the authority to approve the action, commits to a plan to sell the asset or disposal group; (ii) the asset or disposal group is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such assets; (iii) an active program to locate a buyer and other actions required to complete the plan to sell the asset or disposal group have been initiated; (iv) the sale of the asset or disposal group is probable, and transfer of the asset or disposal group is expected to qualify for recognition as a completed sale within one one We initially measure a long-lived asset or disposal group that is classified as held for sale at the lower of its carrying value or fair value less any costs to sell. Any loss resulting from this measurement is recognized in the period in which the held-for-sale criteria are met. Conversely, gains are not not December 31, 2021 2020, Upon determining that a long-lived asset or disposal group meets the criteria to be classified as held for sale, the Company ceases depreciation and reports long-lived assets and/or the assets and liabilities of the disposal group, if material, in the line item "Assets held for sale" in our consolidated balance sheets.
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and Other Intangible Assets Goodwill represents the excess purchase price over the fair value of identifiable assets received attributable to business acquisitions and combinations. Goodwill and other intangible assets are measured for impairment at least annually and/or whenever events and circumstances arise that indicate impairment may The Company completed its annual goodwill impairment test as of December 31, 2021. As a result of performing the annual test of impairment, the Company recognized no impairment loss for its goodwill during the years ended December 31, 2021 2020.
Revenue [Policy Text Block]	Revenue Recognition The Company evaluates revenue when we can identify the contract with the customer, the performance obligations in the contract, the transaction price, and we are certain that the performance obligations have been met. Revenue is recognized when the service has been provided to the customer. The vast majority of the Company's services and product offerings are short-term in nature. The time between invoicing and when payment is due under these arrangements is generally thirty sixty not The Company’s agreements with its customers are often referred to as "price sheets" and sometimes provide pricing for multiple services. However, these agreements generally do not not Revenue is recognized for certain projects that take more than one Disaggregation of Revenue S ee Note 10 for disaggre
Earnings Per Share, Policy [Policy Text Block]	Earning s (Loss) Per Share Earnings (Loss) per Common Share - Basic is computed by dividing net income (loss) by the weighted average number of common shares outstanding for the period. Earnings (Loss) per Common Share - Diluted is calculated by dividing net income (loss) by the diluted weigh ted average number of common shares outstanding for the period. The diluted weighted average number of common shares outstanding for the period is computed using the treasury stock method for common stock that may As of December 31, 2021 2020, were outstanding stock options, unvested restricted stock awards and warrants to acquire an aggrega te of 1,374,640 and 1 ,079,629 shares of Company common stock, respectively, which have a potentially dilutive impact on earnings (loss) per share. As of December 31, 2021 and 2020, these outstanding stock options, unvested restricted stock awards and warrants had no December 31, 2021 2020, not not December 31, 2021 2020.
Loan Fees and Other Deferred Costs [Policy Text Block]	Offering Costs The Company complies with the requirements of ASC 340 10 S99 1 5A, Expenses of Offering December 31, 2021 2020,
Employee Retention Tax Credit [Policy Text Block]	Employee Retention Tax Credits The Employee Retention Credits program, a provision of the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act"), was extended through December 31, 2021 November 15, 2021, September 30, 2021. 2021, first three 2021. December 31, 2021,
Income Tax, Policy [Policy Text Block]	Income Taxes The Company recognizes deferred tax liabilities and assets based on the differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements that will result in taxable or deductible amounts in future years (see Note 6 ) . Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect of a change in tax rates on deferred tax assets and liabilities will be recognized in income in the period that includes the enactment date. A deferred tax asset or liability that is not related to an asset or liability for financial reporting is classified according to the expected reversal date. The Company records a valuation allowance to reduce deferred tax assets to an amount that it believes is more likely than not expected to be realized. The Company accounts for any uncertainty in income taxes by recognizing the tax benefit from an uncertain tax position only if, in the Company's opinion, it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The Company measures the tax benefits recognized in the financial statements from such a position based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate resolution. The application of income tax law is inherently complex. Laws and regulations in this area are voluminous and are often ambiguous. As such, the Company is required to make many subjective assumptions and judgments regarding income tax exposures. Interpretations of and guidance surrounding income tax law and regulations change over time and may result in changes to the Company’s subjective assumptions and judgments which can materially affect amounts recognized in the consolidated balance sheets and consolidated statements of operations. The result of the reassessment of the Company’s tax positions did not have an impact on the consolidated financial statements. Penalties and interest associated with tax positions are recorded in the peri od assessed within the line item "Other incom e" in the consolidated statements of operations. The Company files income tax returns in the United States and in the states in which it conducts its business operations. The Company’s United States federal income tax filings for tax years 2018 through 2021 remain open to examination. In general, the Company’s various state tax filings remain open for tax years 2017 through 2021.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Value The Company follows authoritative guidance that applies to all financial assets and liabilities required to be measured and reported on a fair value basis. The Company also applies the guidance to non-financial assets and liabilities measured at fair value on a nonrecurring basis, including non-competition agreements and goodwill. The guidance defines fair value as the price that would be received to sell an asset or paid to transfer a liability ("exit price") in an orderly transaction between market participants at the measurement date. The guidance establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and mini Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions of what market participants would use in pricing the asset or liability based on the best information available in the circumstances. Beginning in 2017, not December 31, 2021 or 2020. The hierarchy is broken down into three Level 1: Quoted prices are available in active markets for identical assets or liabilities; Level 2: Quoted prices in active markets for similar assets and liabilities that are observable for the asset or liability; or Level 3: Unobservable pricing inputs that are generally less observable from objective sources, such as discounted cash flow models or valuations.
Share-Based Payment Arrangement [Policy Text Block]	Stock-Based Compensation Stock-based compensation cost is measured at the date of grant, based on the calculated fair value of the award as described below, and is recognized over the requisite service period, which is generally the vesting period of the equity grant. The Company uses the Black-Scholes pricing model as a method for determining the estimated grant date fair value for all stock options awarded to employees, independent contractors, officers and directors. The expected term of the options is based upon evaluation of historical and expected exercise behavior. The risk-free interest rate is based upon United States Treasury rates at the date of grant with maturity dates approximately equal to the expected life of the grant. Volatility is determined upon historical volatility of our stock and adjusted if future volatility is expected to vary from historical experience. The dividend yield is assumed to be none not The Company uses a Lattice model to determine the fair value of certain warrants. The expected term used was the remaining contractual term. Expected volatility is based upon historical volatility over a term consistent with the remaining term. The risk-free interest rate is derived from the yield on zero The Company used the market value of Company stock to determine the fair value of the performance-based restricted stock awar ded in 2021. The Company used a Lattice model to determ ine the fair value of market-based restricted stock awarded in 2021 2020.
Use of Estimates, Policy [Policy Text Block]	Management Estimates The preparation of the Company ’s consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates include the realization of accounts receivable, evaluation of impairment of long-lived assets, stock-based compensation expense, provision for income taxes, and the valuation of warrant liabilities and deferred taxes. Actual results could differ from those estimates.
Commitments and Contingencies, Policy [Policy Text Block]	Contingent Liabilities From time-to-time, the Company will have contingent liabilities that arise in the course of business, usually as it pertains to certain lawsuits in which the Company is involved. When a future contingent liability becomes both probable and estimable, the Company will record a liability for the estimated amount, as well as any offsetting receivables in the event the claim is probable to be covered by an insurance policy. In the event there is a range of outcomes and no
Classification and Valuation of Warrants [Policy Text Block]	Classification and Valuation of Warrants The Company analyzes warrant instruments under ASC 480 10, Distinguishing Liabilities from Equity None The Company uses a Lattice model to determine the fair value of certain warrants. The expected term used was the remaining contractual term. Expected volatility is based upon historical volatility over a term consistent with the remaining term. The risk-free interest rate is derived from the yield on zero zero
Going Concern, Policy [Policy Text Block]	Going Concern The Company utilizes a cash forecast model to evaluate the ability of future cash flows to fund continuing operations. The Company analyzes projected cash flows to determine if they are sufficient to fund the operations and obligations of the Company for a period of time that extends twelve
Reclassification, Comparability Adjustment [Policy Text Block]	Reclassifications Certain prior period amounts have been reclassified for comparative purposes to conform to the current presentation. These reclassifications have no
New Accounting Pronouncements, Policy [Policy Text Block]	Accounting Pronouncements Recently Adopted In January 2017, 2017 04, Intangibles—Goodwill and Other (Topic 350 2017 04 . December 15, 2019. 2017 04 January 1, 2020 2017 04. Recently Issued In June 2016, 2016 13, Financial Statements - Credit Losses (Topic 326 December 15, 2022. not 2016 13

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Current Ownership Hierarchy [Table Text Block]	Name State of Formation Ownership Business Heat Waves Hot Oil Service LLC Colorado 100% by Enservco Oil and natural gas well services, including logistics and stimulation. Adler Hot Oil Service, LLC Delaware 100% by Enservco Operations integrated into Heat Waves during 2019. Adler Hot Oil Service, LLC was dissolved during the second quarter of 2021. Heat Waves Water Management LLC Colorado 100% by Enservco Discontinued operations in 2019. Heat Waves Water Management LLC was dissolved during the second quarter of 2021. Dillco Fluid Service, Inc. Kansas 100% by Enservco Discontinued operation in 2018. Dillco Fluid Service, Inc. was dissolved during the second quarter of 2021. HE Services LLC Nevada 100% by Heat Waves No active business operations. Owned construction equipment used by Heat Waves. HE Services LLC was dissolved on December 23, 2020.

Note 3 - Property and Equipme_2

Note 3 - Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Property, Plant and Equipment [Table Text Block]	December 31, 2021 2020 Trucks and vehicles $ 54,670 $ 57,224 Other equipment 2,059 1,319 Buildings and improvements 3,140 3,176 Land 378 378 Total property and equipment 60,247 62,097 Accumulated depreciation (44,074 ) (41,780 ) Property and equipment, net $ 16,173 $ 20,317

Note 4 - Intangible Assets (Tab

Note 4 - Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	December 31, 2021 2020 Customer relationships $ 626 $ 626 Patents and trademarks 441 441 Total intangible assets 1,067 1,067 Accumulated amortization (668 ) (450 ) Net carrying value $ 399 $ 617
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	2022 2023 2024 2025 2026 Customer relationships $ 125 $ 104 $ - $ - $ - Patents and trademarks 93 77 - - - Total intangible asset amortization expense $ 218 $ 181 $ - $ - $ -

Note 5 - Debt (Tables)

Note 5 - Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Long-Term Debt Instruments [Table Text Block]	December 31, 2021 2020 Senior Revolving Credit Facility with related party. All future interest through October 15, 2021 accrued to loan pursuant to the Fifth Amendment. Interest at 8.25 5.25 3 10 October 15, 2022 $ 14,102 $ 19,078 Subordinated Promissory Note with related party. Non-interest bearing. $ 10 June 21, 2022 220 - Paycheck Protection Loan. Interest is at 1 April 10, 2022 - 1,940 Subordinated Promissory Note with related party. Interest at 10 - 1,250 Real Estate Loan for a facility in North Dakota. Interest at 5.75 5,255 112 167 Vehicle loans for three pickups. Interest at 8.59 3,966 - 31 Note payable to the seller of Heat Waves. The note was garnished by the Internal Revenue Service (" IRS") in 2009 and is due on demand; paid in annual installments of $ 36,000 - 14 Total long-term debt 14,434 22,480 Less debt discount (9 ) (70 ) Less current portion (8,967 ) (1,693 ) Long-term debt, net of debt discount and current portion $ 5,458 $ 20,717
Schedule of Maturities of Long-Term Debt [Table Text Block]	For the year ended December 31, 2022 $ 8,976 2023 1,310 2024 1,468 2025 1,716 2026 964 Total $ 14,434

Note 6 - Income Taxes (Tables)

Note 6 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	December 31, 2021 2020 Current: Federal $ - $ - State - 12 Total current - 12 Deferred: Federal 234 - State 39 - Total deferred 273 - Total income tax expense $ 273 $ 12
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	December 31, 2021 2020 Computed income taxes at 21% $ (1,634 ) $ (502 ) (Decrease) increase in income taxes resulting from: State and local income taxes, net of federal impact (272 ) (72 ) Change in valuation allowance 2,892 571 True-up adjustment (238 ) - Stock-based compensation - 1 Paycheck Protection Plan loan forgiveness (481 ) - Other 6 14 Income tax expense $ 273 $ 12
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31, 2021 2020 Deferred tax assets: Reserves and accruals $ 603 $ 183 Amortization 60 53 Capital losses and other 12 13 Non-qualified stock option expense 2 194 Loss carryforwards 8,700 7,066 Total deferred tax assets 9,377 7,509 Valuation allowance (7,649 ) (4,757 ) Net deferred tax assets 1,728 2,752 Deferred tax liabilities: Depreciation (2,001 ) (2,752 ) Total deferred tax liabilities (2,001 ) (2,752 ) Net deferred tax liabilities $ (273 ) $ -

Note 7 - Stockholders' Equity (

Note 7 - Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]	Weighted Average Weighted Average Remaining Warrants Shares Exercise Price Contractual Life (Years) Outstanding as of January 1, 2020 43,667 $ 3.34 4.72 Issued 1,000,000 3.75 4.73 Outstanding as of December 31, 2020 1,043,667 $ 3.73 4.69 Issued 150,418 2.51 4.12 Expired (2,000 ) 10.50 - Outstanding as of December 31, 2021 1,192,085 $ 3.57 3.75 Exercisable as of December 31, 2021 1,041,667 $ 3.72 3.70

Note 8 - Stock Options and Re_2

Note 8 - Stock Options and Restricted Stock (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Share-Based Payment Arrangement, Option, Activity [Table Text Block]	Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Outstanding as of January 1, 2020 129,689 $ 8.45 1.95 Forfeited or expired (118,120 ) 8.54 - Outstanding as of December 31, 2020 11,569 $ 5.87 0.53 Forfeited or expired (10,235 ) 5.91 - Outstanding as of December 31, 2021 1,334 $ 5.55 0.42 Vested as of December 31, 2021 1,334 $ 5.55 0.42 Exercisable as of December 31, 2021 1,334 $ 5.55 0.42
Schedule of Nonvested Share Activity [Table Text Block]	Shares Weighted Average Grant Date Fair Value Non-vested as of January 1, 2020 3,533 $ 3.30 Vested (1,755 ) 3.36 Forfeited (1,778 ) 19.29 Non-vested as of December 31, 2020 - $ - Vested - - Forfeited - - Non-vested as of December 31, 2021 - $ -
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]	Shares Weighted Average Grant Date Fair Value Restricted shares as of January 1, 2020 133,756 8.25 Granted 10,001 2.49 Vested (69,777 ) 6.56 Forfeited (49,587 ) 8.05 Restricted shares as of December 31, 2020 24,393 7.32 Granted 165,000 1.05 Vested (6,505 ) 7.94 Forfeited (1,667 ) 8.92 Restricted shares as of December 31, 2021 181,221 1.58
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	For the Year Ended December 31, 2021 2020 Stock options 3,621 93,747 Restricted stock 179,351 58,220 Warrants 1,175,719 314,158 Weighted average 1,358,691 466,125

Note 9 - Commitments and Cont_2

Note 9 - Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Operating Leases Finance Leases For the year ended December 31, 2022 $ 799 $ 21 2023 641 14 2024 465 10 2025 354 - 2026 179 - Thereafter - - Total future lease commitments 2,438 45 Impact of discounting (254 ) (2 ) Discounted value of lease obligations $ 2,184 $ 43
Lease, Cost [Table Text Block]	For the Year Ended December 31, 2021 2020 Operating lease expense: Current lease cost $ 82 $ 55 Long-term lease cost 1,026 1,107 Total operating lease cost $ 1,108 $ 1,162 Finance lease expense: Amortization of right-of-use assets $ 64 $ 189 Interest on lease liabilities 6 19 Total finance lease cost $ 70 $ 208 For the Year Ended December 31, 2021 2020 Operating: Weighted-average lease term (years) 3.42 4.08 Weighted-average discount rate 6.09 % 6.08 % Finance: Weighted-average lease term (years) 2.35 2.09 Weighted-average discount rate 5.67 % 5.94 %

Note 10 - Segment Reporting (Ta

Note 10 - Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Production Services Completion and Other Services Unallocated Total For the Year Ended December 31, 2021: Revenues $ 9,012 $ 6,325 $ - $ 15,337 Cost of revenues 9,734 7,605 - 17,339 Segment loss $ (722 ) $ (1,280 ) $ - $ (2,002 ) Depreciatio n and amortization $ 2,397 $ 2,415 $ 403 $ 5,215 Capital exp enditures $ 306 $ 276 $ 11 $ 593 Identifiable assets (1) $ 12,357 $ 9,007 $ 505 $ 21,869 For the Year Ended December 31, 2020: Revenues $ 7,714 $ 7,969 $ - $ 15,683 Cost of revenues 8,410 8,801 - 17,211 Segment loss $ (696 ) $ (832 ) $ - $ (1,528 ) Depreciatio n and amortization $ 2,378 $ 2,512 $ 392 $ 5,282 Capital exp enditures $ 176 $ 185 $ - $ 361 Identifiable assets (1) $ 12,353 $ 13,050 $ 939 $ 26,342
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	For the Year Ended December 31, 2021 2020 Segment loss $ (2,002 ) $ (1,528 ) Sales, general and administrative expenses (4,185 ) (5,002 ) Severance and transition costs (7 ) (145 ) Gain (loss) from disposal of equipment 124 (47 ) Impairment loss (128 ) (733 ) Depreciation and amortization (5,215 ) (5,282 ) Loss from operations $ (11,413 ) $ (12,737 )
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	For the Year Ended December 31, 2021 2020 BY GEOGRAPHY: Production Services: Rocky Mountain Region (1) $ 2,213 $ 2,689 Central USA Region (2) 6,158 4,552 Eastern USA Region (3) 641 473 Total Production Services 9,012 7,714 Completion and Other Services: Rocky Mountain Region (1) 4,521 6,601 Central USA Region (2) 128 108 Eastern USA Region (3) 1,676 1,260 Total Completion and Other Services 6,325 7,969 Total Revenues $ 15,337 $ 15,683

Note 1 - Basis of Presentatio_2

Note 1 - Basis of Presentation - Current Ownership Hierarchy (Details)	12 Months Ended
	Dec. 31, 2021
Heat Waves Hot Oil Service LLC at Colorado [Member]
Subsidiary or Equity Method Investee	100%
Adler Hot Oil Service, LLC [Member]
Subsidiary or Equity Method Investee	100%
Heat Waves Water Management LLC at Colorado [Member]
Subsidiary or Equity Method Investee	100%
Dillco Fluid Service, Inc. at Kansas [Member]
Subsidiary or Equity Method Investee	100%
HE Services LLC at Nevada [Member]
Subsidiary or Equity Method Investee	100%

Note 2 - Summary of Significa_2

Note 2 - Summary of Significant Accounting Policies and Recent Developments (Details Textual)			12 Months Ended
	Mar. 18, 2022 USD ($)	Mar. 18, 2021 USD ($)	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Mar. 24, 2022 USD ($)	Mar. 24, 2021 USD ($)
Net Income (Loss) Attributable to Parent, Total			$ (8,052,000)	$ (2,509,000)
Liabilities, Current, Total			12,532,000	4,574,000
Assets, Current, Total			5,593,000	4,880,000
Working Capital Deficit			6,900,000	306,000
Accounts Receivable, Allowance for Credit Loss, Current			482,000	322,000
Accounts Receivable, Credit Loss Expense (Reversal)			268,000	140,000
Inventory Write-down			0	18,000
Operating Income (Loss), Total			(11,413,000)	(12,737,000)
Impairment, Long-Lived Asset, Held-for-Use, Total			0	0
Impairment of Long-Lived Assets to be Disposed of			128,000	733,000
Goodwill and Intangible Asset Impairment, Total			$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options and Warrants, Outstanding, Number (in shares) | shares			1,374,640	1,079,629
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs			$ 815,000	$ 296,000
Employee Retention Tax Credit, Maximum Amount Per Employee Per Quarter			7,000
Employee Retention Tax Credit			1,800,000
Payments of Dividends, Total			$ 0
Certain Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate			0%
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Open Tax Year			2018 2019 2020 2021
State and Local Jurisdiction [Member]
Open Tax Year			2017 2018 2019 2020 2021
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)			5 years
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)			30 years
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Number of Major Customers			2	1
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer One [Member]
Concentration Risk, Percentage			31%	26%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer Two [Member]
Concentration Risk, Percentage			14%
Revenue Benchmark [Member] | Customer Concentration Risk [Member]
Number of Major Customers			1	1
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer One [Member]
Concentration Risk, Percentage			13%	14%
The 2022 Refinancing Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Fair Value of Amount Outstanding						$ 13,800,000
Repayments of Lines of Credit		$ 8,400,000
Lines of Credit, Percentage of Net Proceeds From Receivables Financing, Payments for Refinancing.		5%
Lines of Credit, Value of Net Proceeds From Receivables Financing, Payments for Refinancing.		$ 1,000,000
Long-Term Line of Credit, Noncurrent			$ 5,400,000
The 2022 Refinancing Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility, Fair Value of Amount Outstanding					$ 13,800,000
Repayments of Lines of Credit	$ 8,400,000
Lines of Credit, Percentage of Net Proceeds From Receivables Financing, Payments for Refinancing.	500%
Lines of Credit, Value of Net Proceeds From Receivables Financing, Payments for Refinancing.	$ 1,000,000

Note 3 - Property and Equipme_3

Note 3 - Property and Equipment (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Depreciation, Total	$ 4.9	$ 4.9

Note 3 - Property and Equipme_4

Note 3 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property and equipment, gross	$ 60,247	$ 62,097
Accumulated depreciation	(44,074)	(41,780)
Property and equipment, net	16,173	20,317
Vehicles [Member]
Property and equipment, gross	54,670	57,224
Property, Plant and Equipment, Other Types [Member]
Property and equipment, gross	2,059	1,319
Building and Building Improvements [Member]
Property and equipment, gross	3,140	3,176
Land [Member]
Property and equipment, gross	$ 378	$ 378

Note 4 - Intangible Assets (Det

Note 4 - Intangible Assets (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Asset, Useful Life (Year)	5 years
Amortization of Intangible Assets, Total	$ 218,000	$ 211,000

Note 4 - Intangible Assets - Co

Note 4 - Intangible Assets - Components of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Intangible assets, gross	$ 1,067	$ 1,067
Accumulated amortization	(668)	(450)
Net carrying value	399	617
Customer Relationships [Member]
Intangible assets, gross	626	626
Intellectual Property [Member]
Intangible assets, gross	$ 441	$ 441

Note 4 - Intangible Assets - Ex

Note 4 - Intangible Assets - Expected Future Amortization Expense (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Expected amortization expense, 2022	$ 218
Expected amortization expense, 2023	181
Expected amortization expense, 2024	0
Expected amortization expense, 2025	0
Expected amortization expense, 2026	0
Customer Relationships [Member]
Expected amortization expense, 2022	125
Expected amortization expense, 2023	104
Expected amortization expense, 2024	0
Expected amortization expense, 2025	0
Expected amortization expense, 2026	0
Patents and Trademarks [Member]
Expected amortization expense, 2022	93
Expected amortization expense, 2023	77
Expected amortization expense, 2024	0
Expected amortization expense, 2025	0
Expected amortization expense, 2026	$ 0

Note 5 - Debt (Details Textual)

Note 5 - Debt (Details Textual) - USD ($)											1 Months Ended				2 Months Ended	3 Months Ended		4 Months Ended	12 Months Ended
	Mar. 24, 2022	Mar. 18, 2022	Mar. 09, 2022	Dec. 23, 2021	Jul. 08, 2021	Apr. 26, 2021	Mar. 18, 2021	Feb. 11, 2021	Sep. 23, 2020	Apr. 10, 2020	May 31, 2022	Dec. 31, 2021	Nov. 30, 2021	Oct. 31, 2021	Mar. 31, 2022	Mar. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Dec. 31, 2021	Dec. 31, 2020	Mar. 22, 2022	Dec. 21, 2021	Nov. 12, 2021	Mar. 24, 2021	Dec. 31, 2019	Aug. 10, 2017
Long-term Debt, Total												$ 14,434,000							$ 14,434,000	$ 22,480,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)												$ 3.57							$ 3.57	$ 3.73					$ 3.34
Gains (Losses) on Restructuring of Debt																			$ 0	$ 11,916,000
Effect on Basic and Diluted Earnings Per Share, Convertible Securities (in dollars per share)																				$ 2.85
Proceeds from Sale of Productive Assets, Total												$ 272,000
Interest Expense, Total																			57,000	$ 1,695,000
Gain (Loss) on Extinguishment of Debt, Total																			$ 1,964,000	$ 0
Warrant Issued in Connection with Amended 2017 Credit Agreement [Member]
Warrants and Rights Outstanding, Term (Year)									5 years
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)									1,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)									$ 3.75
Warrants and Rights Outstanding									$ 1,400,000
Conversion from 2017 Credit Agreement Loan Concession to Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares)									533,334
Shares Issued, Price Per Share (in dollars per share)									$ 2.0775
Debt Conversion, Converted Instrument, Amount									$ 1,100,000
Subsequent Event [Member] | Heat Waves Hot Oil Service LLC at Colorado [Member]
Maximum Percentage on Advance to Accounts Receivable Factored	85%
Maximum Amount on Advance to Accounts Receivable Factored	$ 10,000,000
Receivable Fee, Percentage of Receivable Purchased in Addition to Fund Usage Daily Fee	0.10%
Funds Usage Daily Fee, Percentage	0.021%
Revolving Credit Facility [Member]
Debt Instrument, Term (Year)																			10 years	10 years
Debt Instrument, Interest Rate, Stated Percentage												8.25%							8.25%	8.25%
Debt Instrument, Interest Rate, Calculated Monthly and Paid in Arrears												5.25%							5.25%	5.25%
Debt Instrument, Interest Rate, Accrued on Principal Balance												3%							3%	3%
Long-term Debt, Total												$ 14,102,000							$ 14,102,000	$ 19,078,000
Utica Leaseco, LLC [Member] | Master Lease Agreement [Member] | Subsequent Event [Member] | Heat Waves Hot Oil Service LLC at Colorado [Member]
Debt Instrument, Face Amount	$ 6,225,000
Debt Instrument, Term (Year)	51 months
Debt Instrument, Periodic Payment, Total	$ 168,075
Debt Instrument, Covenant, Option, Payment of Lease Facility in Exchange for Reduced Payment schedule	$ 1,000,000
Utica Leaseco, LLC [Member] | Master Lease Agreement [Member] | Subsequent Event [Member] | Heat Waves Hot Oil Service LLC at Colorado [Member] | Minimum [Member]
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid, Percentage of Principle	1%
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid	$ 62,250
Utica Leaseco, LLC [Member] | Master Lease Agreement [Member] | Subsequent Event [Member] | Heat Waves Hot Oil Service LLC at Colorado [Member] | Maximum [Member]
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid, Percentage of Principle	10%
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid	$ 622,500
The 2017 Credit Agreement [Member] | East West Bank [Member]
Debt Instrument, Interest Rate, Stated Percentage									8.25%
Debt Instrument, Interest Rate, Calculated Monthly and Paid in Arrears									5.25%
Debt Instrument, Interest Rate, Accrued on Principal Balance									3%
Debt Instrument, Covenant, Minimum Liquidity																				1,500,000
Debt Instrument, Covenant, Percentage of Projected Gross Revenue Achieved												80%	80%				70%
Debt Instrument, Covenant, Maximum Capital Expenditures																	$ 1,200,000
Repayments of Long-term Debt, Total								$ 3,000,000
Long-term Debt, Total												$ 13,500,000							$ 13,500,000
Debt, Weighted Average Interest Rate												8.25%							8.25%
Line of Credit Facility, Remaining Borrowing Capacity																	1,000,000
Long-term Debt, Gross												$ 14,100,000							$ 14,100,000
Interest Payable												38,000							38,000
Debt Instrument, Non-compliance, Projected Gross Revenue, Amount Lower Than Requirement														$ 172,000
Debt Instrument, Fee Amount																							$ 70,000
Gains (Losses) on Restructuring of Debt																				11,900,000
The 2017 Credit Agreement [Member] | East West Bank [Member] | Forecast [Member]
Debt Instrument, Covenant, Percentage of Projected Gross Revenue Achieved											80%							70%
The 2017 Credit Agreement [Member] | East West Bank [Member] | Subsequent Event [Member]
Debt Instrument, Covenant, Percentage of Projected Gross Revenue Achieved															80%
The 2017 Credit Agreement [Member] | East West Bank [Member] | Equipment Term Loan [Member]
Debt Instrument, Face Amount									$ 17,000,000
Repayments of Long-term Debt, Total				$ 272,000
The 2017 Credit Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity, Percent of Eligible Receivables																										85%
Line of Credit Facility, Maximum Borrowing Capacity, Percentage of Trucks and Equipment																										85%
Line of Credit Facility, Decrease, Forgiveness									16,000,000
Line of Credit Facility, Maximum Borrowing Capacity									$ 1,000,000
Debt Instrument, Term (Year)						10 years
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage									0.50%
The 2022 Refinancing Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member]
Long-term Debt, Gross												14,100,000							14,100,000
Line of Credit Facility, Fair Value of Amount Outstanding																								$ 13,800,000
Repayments of Lines of Credit							$ 8,400,000
Lines of Credit, Percentage of Net Proceeds From Receivables Financing, Payments for Refinancing.							5%
Lines of Credit, Value of Net Proceeds From Receivables Financing, Payments for Refinancing.							$ 1,000,000
Long-Term Line of Credit, Noncurrent												5,400,000							5,400,000
The 2022 Refinancing Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit Facility, Fair Value of Amount Outstanding	$ 13,800,000
Repayments of Lines of Credit		$ 8,400,000
Lines of Credit, Percentage of Net Proceeds From Receivables Financing, Payments for Refinancing.		500%
Lines of Credit, Value of Net Proceeds From Receivables Financing, Payments for Refinancing.		$ 1,000,000
Cross River Working Capital Note [Member] | Subsequent Event [Member]
Debt Instrument, Face Amount			$ 1,200,000																		$ 1,200,000
Debt Instrument, Term (Year)			6 years
Debt Instrument, Interest Rate, Stated Percentage			7%
Interest Payable			$ 15,000
Subordinated Debt with Related Party [Member]
Debt Instrument, Face Amount																						$ 220,000
Long-term Debt, Total												220,000							220,000	0
Interest Payable																						10,000
Debt Instrument, Fee Amount												$ 10,000							10,000	$ 10,000
Deposit Assets, Total																						$ 210,000
Interest Expense, Total																			$ 1,000
Subordinated Debt with Related Party [Member] | Subsequent Event [Member]
Repayments of Subordinated Debt, Total																$ 162,000
Paycheck Protection Program CARES Act [Member]
Debt Instrument, Interest Rate, Stated Percentage												1%							1%	1%
Long-term Debt, Total												$ 0							$ 0	$ 1,940,000
Proceeds from Issuance of Long-term Debt, Total																			$ 0	$ 1,940,000
Paycheck Protection Program CARES Act [Member] | East West Bank [Member]
Proceeds from Issuance of Long-term Debt, Total										$ 1,900,000
Debt Instrument, Decrease, Forgiveness					$ 1,900,000
Debt Instrument, Decrease, Forgiveness of Accrued Interest					$ 24,000
Paycheck Protection Program CARES Act [Member] | East West Bank [Member] | Other Income (Expense) [Member]
Gain (Loss) on Extinguishment of Debt, Total																	$ 2,000,000

Note 5 - Debt - Summary of Long

Note 5 - Debt - Summary of Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Long-term debt	$ 14,434	$ 22,480
Less debt discount	(9)	(70)
Less current portion	(8,967)	(1,693)
Long-term debt, net of debt discount and current portion	5,458	20,717
Subordinated Promissory Note 1 [Member]
Long-term debt	0	1,250
Real Estate Loan 1 [Member]
Long-term debt	112	167
Vehicle Loans for Trucks [Member]
Long-term debt	0	31
Note Payable To Seller Of Heat Waves [Member]
Long-term debt	0	14
Subordinated Debt with Related Party [Member]
Long-term debt	220	0
Paycheck Protection Program CARES Act [Member]
Long-term debt	0	1,940
Revolving Credit Facility [Member]
Long-term debt	$ 14,102	$ 19,078

Note 5 - Debt - Summary of Lo_2

Note 5 - Debt - Summary of Long-term Debt (Details) (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Subordinated Promissory Note 1 [Member]
Debt Instrument, Interest Rate, Stated Percentage	10%	10%
Real Estate Loan 1 [Member]
Debt Instrument, Interest Rate, Stated Percentage	5.75%	5.75%
Periodic principal and interest payment	$ 5,255	$ 5,255
Vehicle Loans for Trucks [Member]
Periodic principal and interest payment	$ 3,966	$ 3,966
Interest rate	8.59%	8.59%
Note Payable To Seller Of Heat Waves [Member]
Periodic principal and interest payment	$ 36,000	$ 36,000
Subordinated Debt with Related Party [Member]
Maturity date	Jun. 21, 2022	Jun. 21, 2022
Flat Fee	$ 10	$ 10
Paycheck Protection Program CARES Act [Member]
Debt Instrument, Interest Rate, Stated Percentage	1%	1%
Maturity date	Apr. 10, 2022	Apr. 10, 2022
Revolving Credit Facility [Member]
Debt Instrument, Interest Rate, Stated Percentage	8.25%	8.25%
Interest rate, payable monthly	5.25%	5.25%
Interest rate, accrued	3%	3%
Amortization period (Year)	10 years	10 years
Maturity date	Oct. 15, 2022	Oct. 15, 2022

Note 5 - Debt - Summary of Matu

Note 5 - Debt - Summary of Maturities of Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
2022	$ 8,976
2023	1,310
2024	1,468
2025	1,716
2026	964
Total	$ 14,434	$ 22,480

Note 6 - Income Taxes (Details

Note 6 - Income Taxes (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21%	21%
Change in Control Pursuant to Issuance of Common Stock, Shares (in shares)	4,199,998
Deferred Income Tax Expense (Benefit), Total		$ 273,000	$ 0
Income Tax Expense (Benefit), Total		273,000	12,000
Unrecognized Tax Benefits, Ending Balance		0	0
Deferred Tax Assets, Valuation Allowance		7,649,000	4,757,000
Income Tax Examination, Penalties and Interest Expense, Total		0	0
Deferred Income Tax Liabilities, Net		273,000	$ 0
Domestic Tax Authority [Member]
Operating Loss Carryforwards		35,500,000
Tax Credit Carryforward, Subject to Expiration		18,600,000
Operating Loss Carryforwards Not Subject to Expiration		$ 15,300,000
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Open Tax Year		2018 2019 2020 2021
State and Local Jurisdiction [Member]
Tax Credit Carryforward, Subject to Expiration		$ 7,400,000
Open Tax Year		2017 2018 2019 2020 2021

Note 6 - Income Taxes - Compone

Note 6 - Income Taxes - Components of Income Tax Provision (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Federal	$ 0	$ 0
State	0	12,000
Total current	0	12,000
Federal	234,000	0
State	39,000	0
Total deferred	273,000	0
Income tax expense	$ 273,000	$ 12,000

Note 6 - Income Taxes - Reconci

Note 6 - Income Taxes - Reconciliation of Computed Income Tax (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Computed income taxes at 21% for 2021 and 2020, respectively	$ (1,634,000)	$ (502,000)
State and local income taxes, net of federal impact	(272,000)	(72,000)
Change in valuation allowance	2,892,000	571,000
True-up adjustment	(238,000)	0
Stock-based compensation	0	1,000
Other	6,000	14,000
Income tax expense	273,000	12,000
Paycheck Protection Program CARES Act [Member]
Paycheck Protection Plan loan forgiveness	$ (481,000)	$ 0

Note 6 - Income Taxes - Recon_2

Note 6 - Income Taxes - Reconciliation of Computed Income Tax (Details) (Parentheticals)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Computed income taxes, rate	21%	21%

Note 6 - Income Taxes - Deferre

Note 6 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Reserves and accruals	$ 603	$ 183
Amortization	60	53
Capital losses and other	12	13
Non-qualified stock option expense	2	194
Loss carryforwards	8,700	7,066
Total deferred tax assets	9,377	7,509
Valuation allowance	(7,649)	(4,757)
Net deferred tax assets	1,728	2,752
Depreciation	(2,001)	(2,752)
Total deferred tax liabilities	(2,001)	(2,752)
Net deferred tax liabilities	$ (273)	$ 0

Note 7 - Stockholders' Equity_2

Note 7 - Stockholders' Equity (Details Textual)					12 Months Ended
	Feb. 11, 2021 USD ($) $ / shares shares	Sep. 23, 2020 USD ($) $ / shares shares	Aug. 13, 2020 USD ($) shares	Nov. 11, 2019 $ / shares shares	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2019 $ / shares
Debt Conversion, Accrued Interest, Amount | $					$ 0
Gain (Loss) on Extinguishment of Debt, Total | $					$ 1,964,000	$ 0
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 3.57	$ 3.73	$ 3.34
Warrant Issued in connection with Conversion of Subordinated Debt [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) | shares	150,418
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 2.507
Class of Warrant or Right, Grant Date Fair Value (in dollars per share)	$ 2.02
Class of Warrant or Right, Period Following Issuance at which Warrants are Exercisable (Year)	1 year
Warrants and Rights Outstanding | $	$ 304,000
Warrant In Connection With Amended Subordinated Loan [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) | shares				41,667
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)				$ 3
Class of Warrant or Right, Grants in Period, Grant Date Fair Value (in dollars per share)				$ 2.40
Warrant Issued in Connection with Amended 2017 Credit Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) | shares		1,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 3.75
Class of Warrant or Right, Period Following Issuance at which Warrants are Exercisable (Year)		1 year
Warrants and Rights Outstanding | $		$ 1,400,000
Class of Warrant or Right, Grants in Period, Grant Date Fair Value (in dollars per share)		$ 1.42
Warrants and Rights Outstanding, Term (Year)		5 years
Warrants Issued in Connection With the Conversion of Subordinated Loan Agreement to Common Stock [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) | shares	150,418
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 2.507
Class of Warrant or Right, Period Following Issuance at which Warrants are Exercisable (Year)	1 year
Class of Warrant or Right, Grants in Period, Grant Date Fair Value (in dollars per share)	$ 2.02
Class of Warrant or Right, Number of Warrants Grants in Period, Gross	1
Warrants and Rights Outstanding, Term (Year)	5 years
Subordinated Debt [Member]
Gain (Loss) on Extinguishment of Debt, Total | $			$ 552,000
Conversion from Subordinated Promissory Note to Common Stock [Member]
Debt Conversion, Original Debt, Percentage of Total Debt	50%		50%
Debt Conversion, Original Debt, Amount | $	$ 1,250,000		$ 1,250,000
Debt Conversion, Accrued Interest, Amount | $	$ 62,000		$ 265,000
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares	601,674		403,602
Debt Conversion, Converted Instrument, Amount | $			$ 963,000

Note 7 - Stockholders' Equity -

Note 7 - Stockholders' Equity - Summary of Warrant Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Outstanding (in shares)	1,043,667	43,667
Outstanding, weighted average exercise price (in dollars per share)	$ 3.73	$ 3.34
Outstanding, weighted average remaining contractual life (Year)	3 years 9 months	4 years 8 months 8 days	4 years 8 months 19 days
Issued (in shares)	150,418	1,000,000
Issued, weighted average exercise price (in dollars per share)	$ 2.51	$ 3.75
Issued, weighted average remaining contractual life (Year)	4 years 1 month 13 days	4 years 8 months 23 days
Expired (in shares)	(2,000)
Expired, weighted average exercise price (in dollars per share)	$ 10.50
Outstanding as of December 31, 2021 (in shares)	1,192,085	1,043,667	43,667
Outstanding, weighted average exercise price (in dollars per share)	$ 3.57	$ 3.73	$ 3.34
Exercisable (in shares)	1,041,667
Exercisable, weighted average exercise price (in dollars per share)	$ 3.72
Exercisable, weighted average remaining contractual life (Year)	3 years 8 months 12 days

Note 8 - Stock Options and Re_3

Note 8 - Stock Options and Restricted Stock (Details Textual) - USD ($)			3 Months Ended	12 Months Ended
	Jan. 01, 2016	Jul. 27, 2010	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2021	Jan. 21, 2021	Dec. 31, 2019	Jul. 18, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)				1,334	11,569			129,689
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)				0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)				181,221	24,393			133,756
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)				6,505	69,777
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)				165,000	10,001
Restricted Stock [Member] | Former CEO [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)					59,667
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)					6,667
Restricted Stock [Member] | Selling, General and Administrative Expenses [Member]
Share-based Payment Arrangement, Expense				$ 130,000	$ 389,000
Restricted Stock [Member] | Selling, General and Administrative Expenses [Member] | Former CEO [Member]
Severance Costs			$ 301,000
Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value							$ 0
Share-based Payment Arrangement, Expense				0	$ 3,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total				$ 0
Option Plan 2010 Member
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum		15%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	381,272					0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)	2,541,809
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)									159,448
Option Plan 2010 Member | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	1 year
Option Plan 2010 Member | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
The 2016 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)									692,782
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)				1,334
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)									533,334
The 2016 Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)				181,221

Note 8 - Stock Options and Re_4

Note 8 - Stock Options and Restricted Stock - Summary of Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Outstanding (in shares)	11,569	129,689
Outstanding, weighted average exercise price (in dollars per share)	$ 5.87	$ 8.45
Outstanding, weighted average remaining contractual life (Year)	5 months 1 day	6 months 10 days	1 year 11 months 12 days
Forfeited or expired (in shares)	(10,235)	(118,120)
Forfeited or Expired, weighted average exercise price (in dollars per share)	$ 5.91	$ 8.54
Outstanding (in shares)	1,334	11,569	129,689
Outstanding, weighted average exercise price (in dollars per share)	$ 5.55	$ 5.87	$ 8.45
Vested (in shares)	1,334
Vested, weighted average exercise price (in dollars per share)	$ 5.55
Vested, weighted average remaining contractual life (Year)	5 months 1 day
Exercisable (in shares)	1,334
Exercisable, weighted average exercise price (in dollars per share)	$ 5.55
Exercisable, weighted average remaining contractual life (Year)	5 months 1 day

Note 8 - Stock Options and Re_5

Note 8 - Stock Options and Restricted Stock - Summary of the Status of Non-vested Shares (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Balance, non-vested (in shares)	0	3,533
Balance, non-vested, weighted average grant date fair value (in dollars per share)	$ 0	$ 3.30
Vested, non-vested (in shares)	0	(1,755)
Vested, weighted average grant date fair value (in dollars per share)	$ 0	$ 3.36
Forfeited, non-vested (in shares)	0	(1,778)
Forfeited, weighted average grant date fair value (in dollars per share)	$ 0	$ 19.29
Balance, non-vested (in shares)	0	0
Balance, non-vested, weighted average grant date fair value (in dollars per share)	$ 0	$ 0

Note 8 - Stock Options and Re_6

Note 8 - Stock Options and Restricted Stock - Summary of Restricted Stock Options (Details) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Balance, Restricted shares (in shares)	24,393	133,756
Balance, Restricted shares, Weighted average grant date fair value (in dollars per share)	$ 7.32	$ 8.25
Granted, Restricted shares (in shares)	165,000	10,001
Granted, Restricted shares, Weighted average grant date fair value (in dollars per share)	$ 1.05	$ 2.49
Vested, Restricted shares (in shares)	(6,505)	(69,777)
Vested, Restricted shares, Weighted average grant date fair value (in dollars per share)	$ 7.94	$ 6.56
Forfeited, Restricted shares (in shares)	(1,667)	(49,587)
Forfeited, Restricted shares, Weighted average grant date fair value (in dollars per share)	$ 8.92	$ 8.05
Balance, Restricted shares (in shares)	181,221	24,393
Balance, Restricted shares, Weighted average grant date fair value (in dollars per share)	$ 1.58	$ 7.32

Note 8 - Stock Options and Re_7

Note 8 - Stock Options and Restricted Stock - Potentially Dilutive Instruments (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Potentially dilutive instruments (in shares)	1,358,691	466,125
Share-Based Payment Arrangement, Option [Member]
Potentially dilutive instruments (in shares)	3,621	93,747
Restricted Stock [Member]
Potentially dilutive instruments (in shares)	179,351	58,220
Warrant [Member]
Potentially dilutive instruments (in shares)	1,175,719	314,158

Note 9 - Commitments and Cont_3

Note 9 - Commitments and Contingencies (Details Textual) - USD ($)				1 Months Ended	48 Months Ended
	Dec. 31, 2021	Nov. 22, 2021	Nov. 08, 2021	Jun. 30, 2015	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Self-insured Amount per Individual Claim				$ 50,000
Self-insured, Maximum Coverage Policy				$ 1,800,000
Self Insurance Reserve	$ 0				$ 0		$ 150,000
Other Income	92,000
Workers' Compensation, Maximum Coverage Policy						$ 1,800,000
Workers' Compensation, Accumulated Payments on Claims	1,800,000				1,800,000
Workers' Compensation, Estimated Accruals					1,600,000
Worker's Compensation, Prepaid Amount	126,000				126,000
Accounts Receivable, after Allowance for Credit Loss, Current, Total	2,845,000				2,845,000		$ 1,733,000
Amanda Mordica vs. Enservco Corporation, Heat Waves Hot Oil Service, LLC, and Two Former Employees [Member]
Loss Contingency, Damages Sought, Value		$ 10,700,000	$ 1,000,000
Accounts Receivable, after Allowance for Credit Loss, Current, Total	400,000				400,000
Accrued Liabilities, Current, Total	$ 400,000				$ 400,000

Note 9 - Commitments and Cont_4

Note 9 - Commitments and Contingencies - Future Minimum Lease Commitments (Details) $ in Thousands	Dec. 31, 2021 USD ($)
2022, operating leases	$ 799
2022, finance leases	21
2023, operating leases	641
2023, finance leases	14
2024, operating leases	465
2024, finance leases	10
2025, operating leases	354
2025, finance leases	0
2026, operating leases	179
2026, finance leases	0
Total future lease commitments	2,438
Total future lease commitments	45
Impact of discounting, operating leases	(254)
Impact of discounting, finance leases	(2)
Discounted value of lease obligations, operating leases	2,184
Discounted value of lease obligations, finance leases	$ 43

Note 9 - Commitments and Cont_5

Note 9 - Commitments and Contingencies - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Current lease cost	$ 82	$ 55
Long-term lease cost	1,026	1,107
Total operating lease cost	1,108	1,162
Amortization of right-of-use assets	64	189
Interest on lease liabilities	6	19
Total finance lease cost	$ 70	$ 208
Weighted-average lease term (years), operating (Year)	3 years 5 months 1 day	4 years 29 days
Weighted-average discount rate, operating	6.09%	6.08%
Weighted-average lease term (years), financing (Year)	2 years 4 months 6 days	2 years 1 month 2 days
Weighted-average discount rate, financing	5.67%	5.94%

Note 10 - Segment Reporting - R

Note 10 - Segment Reporting - Reportable Segments (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Revenues		$ 15,337	$ 15,683
Cost of revenue		17,339	17,211
Segment profit (loss)		(2,002)	(1,528)
Depreciation and amortization		5,215	5,282
Capital expenditures		593	361
Identifiable assets	[1]	21,869	26,342
Depreciation and amortization		5,215	5,282
Production Services [Member]
Revenues		9,012	7,714
Cost of revenue		9,734	8,410
Segment profit (loss)		(722)	(696)
Depreciation and amortization		2,397	2,378
Capital expenditures		306	176
Identifiable assets	[1]	12,357	12,353
Depreciation and amortization		2,397	2,378
Completion Services [Member]
Revenues		6,325	7,969
Cost of revenue		7,605	8,801
Segment profit (loss)		(1,280)	(832)
Depreciation and amortization		2,415	2,512
Capital expenditures		276	185
Identifiable assets	[1]	9,007	13,050
Depreciation and amortization		2,415	2,512
Unallocated and Other Segments [Member]
Revenues		0	0
Cost of revenue		0	0
Segment profit (loss)		0	0
Depreciation and amortization		403	392
Capital expenditures		11	0
Identifiable assets	[1]	505	939
Depreciation and amortization		$ 403	$ 392
[1]Identifiable assets is calculated by summing the balances of accounts receivable, net; inventories; property and equipment, net; net right-of-use lease assets; assets held for sale; and other assets.

Note 10 - Segment Reporting - I

Note 10 - Segment Reporting - Income From Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Segment loss	$ (2,002)	$ (1,528)
Sales, general and administrative expenses	(4,185)	(5,002)
Severance and transition costs	(7)	(145)
Gain (loss) from disposal of equipment	124	(47)
Impairment loss	(128)	(733)
Depreciation and amortization	(5,215)	(5,282)
Loss from operations	$ (11,413)	$ (12,737)

Note 10 - Segment Reporting -_2

Note 10 - Segment Reporting - Revenues by Geography (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Revenue		$ 15,337	$ 15,683
Production Services [Member]
Revenue		9,012	7,714
Completion Services [Member]
Revenue		6,325	7,969
Rocky Mountain Region [Member] | Production Services [Member]
Revenue	[1]	2,213	2,689
Rocky Mountain Region [Member] | Completion Services [Member]
Revenue	[1]	4,521	6,601
Central USA Region [Member] | Production Services [Member]
Revenue	[2]	6,158	4,552
Central USA Region [Member] | Completion Services [Member]
Revenue	[2]	128	108
Eastern USA Region [Member] | Production Services [Member]
Revenue	[3]	641	473
Eastern USA Region [Member] | Completion Services [Member]
Revenue	[3]	$ 1,676	$ 1,260
[1]Includes the DJ Basin/Niobrara field (northeastern Colorado and southeastern Wyoming), the San Juan Basin (southeastern Colorado and northeastern New Mexico), the Powder River and Green River Basins (northeastern and southwestern Wyoming), the Bakken area (western North Dakota and eastern Montana).[2]Includes the Eagle Ford Shale in Southern Texas and the East Texas Oil Field beginning during the second quarter of 2021.[3]Consists of the southern region of the Marcellus Shale formation (southwestern Pennsylvania and northern West Virginia) and the Utica Shale formation (eastern Ohio).

Note 11 - Subsequent Events (De

Note 11 - Subsequent Events (Details Textual) - USD ($)		3 Months Ended
	Mar. 09, 2022	Mar. 31, 2022	Mar. 31, 2021	Mar. 22, 2022
Change in Control Pursuant to Issuance of Common Stock, Shares (in shares)			4,199,998
Subsequent Event [Member]
Payments for Underwriting Deposit	$ 75,000
Subsequent Event [Member] | Unqualified Income Tax Refund, Employee Retention Tax Credits, Amount [Member]
Proceeds from Income Tax Refunds		$ 443,000
Cross River Working Capital Note [Member] | Subsequent Event [Member]
Debt Instrument, Face Amount	1,200,000			$ 1,200,000
Interest Payable	$ 15,000