Enservco (ENSV) 10-Q 13 Nov 19 2019 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Nov. 07, 2019
Document Information [Line Items]
Entity Registrant Name	Enservco Corporation
Entity Central Index Key	0000319458
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Common Stock, Shares Outstanding (in shares)		55,602,829
Entity Shell Company	false
Document Type	10-Q
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents		$ 257,000
Accounts receivable, net	2,914,000	10,729,000
Prepaid expenses and other current assets	688,000	1,081,000
Inventories	338,000	514,000
Income tax receivable, current	85,000	85,000
Current assets of discontinued operations	28,000	864,000
Total current assets	4,053,000	13,530,000
Property and equipment, net	29,368,000	33,057,000
Goodwill	546,000	546,000
Intangible assets, net	880,000	1,033,000
Income taxes receivable, non-current	28,000	28,000
Right-of-use asset - financing, net	702,000
Right-of-use asset - operating, net	4,450,000
Other assets	431,000	650,000
Non-current assets of discontinued operations		177,000
TOTAL ASSETS	40,458,000	49,021,000
Current Liabilities
Accounts payable and accrued liabilities	2,962,000	3,391,000
Note payable		3,868,000
Lease liability - financing, current	238,000
Lease liability - operating, current	963,000
Current portion of long-term debt	149,000	149,000
Current liabilities of discontinued operations		44,000
Total current liabilities	4,312,000	7,452,000
Long-Term Liabilities
Senior revolving credit facility	29,459,000	33,882,000
Subordinated debt	1,869,000	1,832,000
Long-term debt, less current portion	219,000	312,000
Lease liability - financing, less current portion	343,000
Lease liability - operating, less current portion	3,551,000
Other liability	94,000	941,000
Total long-term liabilities	35,535,000	36,967,000
Total liabilities	39,847,000	44,419,000
Commitments and Contingencies (Note 10)
Stockholders' Equity
Preferred stock, $.005 par value, 10,000,000 shares authorized, no shares issued or outstanding
Common stock. $.005 par value, 100,000,000 shares authorized, 55,602,829 and 54,389,829 shares issued, respectively; 103,600 shares of treasury stock; and 55,499,229 and 54,286,229 shares outstanding, respectively	278,000	271,000
Additional paid-in capital	22,011,000	21,797,000
Accumulated deficit	(21,678,000)	(17,466,000)
Total stockholders' equity	611,000	4,602,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 40,458,000	$ 49,021,000

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Sep. 30, 2019	Dec. 31, 2018
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)	55,602,809	54,389,829
Common stock, shares outstanding (in shares)	55,499,229	54,286,229
Treasury stock, shares (in shares)	103,660	103,660

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue	$ 4,697,000	$ 3,834,000	$ 38,143,000	$ 32,048,000
Expenses
Cost of Revenue	5,844,000	4,737,000	31,120,000	25,990,000
Sales, general, and administrative expenses	1,723,000	1,161,000	4,801,000	3,750,000
Patent litigation and defense costs		2,000	10,000	77,000
Severance and transition costs	83,000		83,000	633,000
Gain on disposal of assets	(14,000)		(2,000)	(53,000)
Impairment loss		0	127,000	0
Depreciation and amortization	1,703,000	1,419,000	5,122,000	4,438,000
Total operating expenses	9,339,000	7,319,000	41,261,000	34,835,000
Loss from Operations	(4,642,000)	(3,485,000)	(3,118,000)	(2,787,000)
Other (Expense) Income
Interest expense	(695,000)	(471,000)	(2,237,000)	(1,482,000)
Gain on settlement (Note 4)			1,252,000
Other income (expense)	(67,000)	38,000	(175,000)	(468,000)
Total other income (expense)	(762,000)	(433,000)	(1,160,000)	(1,950,000)
Loss from continuing operations before tax benefit	(5,404,000)	(3,918,000)	(4,278,000)	(4,737,000)
Income tax expense			(32,000)	(32,000)
Loss from continuing operations	(5,404,000)	(3,918,000)	(4,310,000)	(4,769,000)
Loss from operations of discontinued operations		(190,000)		(580,000)
Income tax benefit
Loss from discontinued operations		(190,000)	0	(580,000)
Net loss	$ (5,404,000)	$ (4,108,000)	$ (4,310,000)	$ (5,349,000)
Loss from continuing operations per common share - basic (in dollars per share)	$ (0.10)	$ (0.07)	$ (0.08)	$ (0.09)
Loss from discontinued operations per common share - basic (in dollars per share)		(0.01)		(0.01)
Net loss per share - basic (in dollars per share)	(0.10)	(0.08)	(0.08)	(0.10)
Loss from continuing operations per common share - diluted (in dollars per share)	(0.10)	(0.07)	(0.08)	(0.09)
Loss from discontinued operations per common share - diluted (in dollars per share)		(0.01)		(0.01)
Net loss per share - diluted (in dollars per share)	$ (0.10)	$ (0.08)	$ (0.08)	$ (0.10)
Basic weighted average number of common shares outstanding (in shares)	55,457	54,309	54,925	52,389
Add: Dilutive shares (in shares)
Diluted weighted average number of common shares outstanding (in shares)	55,457	54,309	54,925	52,389
Well Enhancement Services Segment [Member]
Revenue	$ 3,798,000	$ 3,200,000	$ 34,949,000	$ 29,490,000
Expenses
Cost of Revenue	4,535,000	3,946,000	25,897,000	22,937,000
Water Transfer Services Segment [Member]
Revenue	899,000	634,000	3,194,000	2,558,000
Expenses
Cost of Revenue	829,000	650,000	4,301,000	2,586,000
Unallocated and Other Segments [Member]
Expenses
Cost of Revenue	$ 480,000	$ 141,000	$ 922,000	$ 467,000

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock Outstanding [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2017	51,094,000
Balance at Dec. 31, 2017	$ 255	$ 19,571	$ (11,601)	$ 8,225
Stock-based compensation, net of issuance costs		63		63
Cashless option exercise (in shares)	66,000
Cashless option exercise
Net income (loss)			2,041	2,041
Balance (in shares) at Mar. 31, 2018	51,160,000
Balance at Mar. 31, 2018	$ 255	19,634	(9,560)	10,329
Balance (in shares) at Dec. 31, 2017	51,094,000
Balance at Dec. 31, 2017	$ 255	19,571	(11,601)	$ 8,225
Cashless option exercise (in shares)				1,230,002
Net income (loss)				$ (5,349)
Balance (in shares) at Sep. 30, 2018	54,298,000
Balance at Sep. 30, 2018	$ 271	21,695	(16,950)	5,016
Balance (in shares) at Mar. 31, 2018	51,160,000
Balance at Mar. 31, 2018	$ 255	19,634	(9,560)	10,329
Stock-based compensation, net of issuance costs		105		105
Cashless option exercise (in shares)	663,000
Cashless option exercise	$ 3	(3)
Net income (loss)			(3,282)	(3,282)
Restricted share issuance (in shares)	990,000
Restricted share issuance	$ 5	(5)
Cashless exercise of warrants (in shares)	1,613,000
Cashless exercise of warrants	$ 8	1,863		1,871
Balance (in shares) at Jun. 30, 2018	54,426,000
Balance at Jun. 30, 2018	$ 271	21,594	(12,842)	9,023
Net income (loss)			(4,108)	(4,108)
Stock-based compensation, net of issuance costs		101		101
Restricted share cancellation (in shares)	(128,000)
Restricted share cancellation
Balance (in shares) at Sep. 30, 2018	54,298,000
Balance at Sep. 30, 2018	$ 271	21,695	(16,950)	5,016
Balance (in shares) at Dec. 31, 2018	54,286,000
Balance at Dec. 31, 2018	$ 271	21,797	(17,466)	4,602
Net income (loss)			4,303	4,303
Stock-based compensation, net of issuance costs		92		92
Restricted share cancellation (in shares)	(55,000)
Restricted share cancellation
Opening balance adjustment			108	108
Balance (in shares) at Mar. 31, 2019	54,231,000
Balance at Mar. 31, 2019	$ 271	21,889	(13,055)	9,105
Balance (in shares) at Dec. 31, 2018	54,286,000
Balance at Dec. 31, 2018	$ 271	21,797	(17,466)	$ 4,602
Cashless option exercise (in shares)				0
Net income (loss)				$ (4,310)
Balance (in shares) at Sep. 30, 2019	55,499,000
Balance at Sep. 30, 2019	$ 278	22,011	(21,678)	611
Balance (in shares) at Mar. 31, 2019	54,231,000
Balance at Mar. 31, 2019	$ 271	21,889	(13,055)	9,105
Net income (loss)			(3,209)	(3,209)
Restricted share issuance (in shares)	1,123,000
Restricted share issuance	$ 6	(6)
Stock-based compensation, net of issuance costs		77		77
Restricted share cancellation (in shares)	(25,000)
Restricted share cancellation
Balance (in shares) at Jun. 30, 2019	55,329,000
Balance at Jun. 30, 2019	$ 277	21,960	(16,264)	5,973
Net income (loss)			(5,404)	(5,404)
Restricted share issuance (in shares)	330,000
Restricted share issuance	$ 1	(2)		(1)
Stock-based compensation, net of issuance costs		53		53
Restricted share cancellation (in shares)	(160,000)
Restricted share cancellation
Opening balance adjustment			(10)	(10)
Balance (in shares) at Sep. 30, 2019	55,499,000
Balance at Sep. 30, 2019	$ 278	$ 22,011	$ (21,678)	$ 611

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
OPERATING ACTIVITIES
Net income (loss)	$ (4,310,000)	$ (5,349,000)
Net loss from discontinued operations	0	(580,000)
Net loss from continuing operations	(4,310,000)	(4,769,000)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	5,122,000	4,438,000
Gain on disposal of equipment	(2,000)	(53,000)
Impairment loss	127,000	0
Gain on settlement (Note 4)	(1,252,000)
Change in fair value of warrant liability	0	540,000
Stock-based compensation	221,000	291,000
Amortization of debt issuance costs and discount	273,000	164,000
Lease termination expense	62,000
Provision for bad debt expense	171,000	32,000
Changes in operating assets and liabilities
Accounts receivable	7,636,000	8,913,000
Inventories	176,000	49,000
Prepaid expense and other current assets	305,000	(128,000)
Amortization of operating lease assets	599,000
Other assets	239,000	231,000
Accounts payable and accrued liabilities	(477,000)	(3,340,000)
Operating lease liabilities	(546,000)
Other liabilities	104,000	0
Net cash provided by operating activities - continuing operations	8,448,000	6,368,000
Net cash provided by (used in) operating activities - discontinued operations	40,000	(704,000)
Net cash provided by - operating activities	8,488,000	5,664,000
INVESTING ACTIVITIES
Purchases of property and equipment	(1,206,000)	(1,586,000)
Proceeds from disposals of property and equipment	219,000	145,000
Proceeds from insurance claims	27,000	122,000
Net cash used in investing activities - continuing operations	(960,000)	(1,319,000)
Net cash provided by (used in) investing activities - discontinued operations	760,000	(44,000)
Net cash used in investing activities	(200,000)	(1,363,000)
FINANCING ACTIVITIES
Net line of credit payments	(4,474,000)	(4,544,000)
Repayment of long-term debt	(3,700,000)	(79,000)
Payments of finance leases	(278,000)
Repayment of note	(92,000)	0
Other financing activities	(1,000)	(30,000)
Net cash used in financing activities	(8,545,000)	(4,653,000)
Net Increase (Decrease) in Cash and Cash Equivalents	(257,000)	(352,000)
Cash and Cash Equivalents, beginning of period	257,000	391,000
Cash and Cash Equivalents, end of period		39,000
Supplemental Cash Flow Information:
Cash paid for interest	1,794,000	1,273,000
Cash paid for taxes	32,000	32,000
Supplemental Disclosure of Non-cash Investing and Financing Activities:
Non-cash proceeds from revolving credit facilities	125,000	103,000
Cashless exercise of stock options		994,000
Non-cash proceeds of warrant exercise		500,000
Non-cash subordinated debt principal repayment		(500,000)
Non-cash conversion of warrant liability to equity		$ 1,371,000

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation	9 Months Ended
	Sep. 30, 2019
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 frac water heating, hot oiling and acidizing (well enhancement services) and water transfer and water treatment services (water transfer services). The accompanying unaudited condensed consolidated financial statements have been derived from the accounting records of Enservco Corporation, Heat Waves Hot Oil Service LLC (“Heat Waves”), . (“Dillco”), Heat Waves Water Management LLC (“HWWM”), and Adler Hot Oil Service, LLC ("Adler") (collectively, the “Company”) as of September 30, 2019 December 31, 2018 three nine September 30, 2019 2018. 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 Oil and natural gas well services, including logistics and stimulation Heat Waves Water Management LLC Colorado 100% by Enservco Water Transfer Services. Dillco Fluid Service, Inc Kansas 100% by Enservco Discontinued operation in 2018 HE Services LLC Nevada 100% by Heat Waves No active business operations. Owns construction equipment used by Heat Waves. The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with accounting principles for interim financial information and with the instructions to Form 10 8 X. not not The accompanying unaudited condensed consolidated financial statements were prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and follow the same accounting policies and methods of their application as the most recent annual financial statements. These interim financial statements should be read in conjunction with the financial statements and related footnotes included in the Annual Report on Form 10 December 31, 2018.

Note 2 - Summary of Significant

Note 2 - Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Significant Accounting Policies [Text Block]	Note 2 - Summary of Significant Accounting Policies Cash and Cash Equivalents The Company considers all highly liquid instruments purchased with an original maturity of three may Accounts Receivable Accounts receivable are stated at the amounts billed to customers, net of an allowance for 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 status of existing receivables. The losses ultimately incurred could differ materially in the near term from the amounts estimated in determining the allowance. As of September 30, 2019, December 31, 2018, $258,000 $139,000, he three nine September 30, 2019, $168,000 $171,000, 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 three nine 30 2019, not write-downs or write-offs of inventory . 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 used 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 of 5 30 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 earnings. Leases The Company assesses whether an arrangement is a lease at inception. Leases with an initial term of 12 not not not The Company conducts a major part of its operations from leased facilities. Each of these leases is accounted for as an operating lease. Normally, the Company records rental expense on its operating leases over the lease term as it becomes payable. If rental payments are not ’s facility leases contain renewal clauses and expire through Jun 2026. most cases, management expects that in the normal course of business, leases will be renewed or replaced by other leases. The Company amortizes leasehold improvements over the shorter of the life of the lease or the life of the improvements. As of September 30, 2019, December 31, 2018, 16,000 and $64,000 , respectively. The Company has leased trucks and equipment in the normal course of business, which may rental expense on equipment under operating leases over the lease term as it becomes payable; there were 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 not $127,000 2019. 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 Revenue Recognition We have adopted Accounting Standards Update 2014 09, 606, January 1, 2018, no 30 60 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 See Note 13 Earnings per Common Share - Basic is computed by dividing net income (loss) by the weighted average number of common shares outstanding for the period. Earnings per Common Share - Diluted earnings is calculated by dividing net income (loss) by the diluted weighted average number of common shares. The diluted weighted average number of common shares is computed using the treasury stock method for common stock that may As of September 30, 2019 and 2018 , there were outstanding stock options and warrants to acquire an aggregate of 1,976,833 and 2,656,099 shares of Company common stock, respectively, which have a potentially dilutive impact on earnings per share. As of September 30, 2019, no September 30 , 2019, of outstanding stock options and warrants. Derivative Instruments From time to time, the Company has interest rate swap agreements in place to hedge against changes in interest rates. The fair value of the Company’s derivative instruments are reflected as assets or liabilities on the balance sheet. The accounting for changes in the fair value of a derivative instrument depends on the intended use of the derivative instrument and the resulting designation. Transactions related to the Company’s derivative instruments accounted for as hedges are classified in the same category as the item hedged in the consolidated statement of cash flows. The Company did not 30, 2019 December 31, 2018, On February 23, 2018, 2017 $10.0 2.52% 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. 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 not 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 50% may not Interest and penalties associated with tax positions are recorded in the period assessed as Other expense. 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 2015 2018 2014 2018. 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 (an 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 minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability developed 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 three six 30, 2019 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 U.S. 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 awarded in 2018 2019. The Company used a Monte Carlo simulation program to determine the fair value of market-based restricted stock awarded in 2018 2019. Management Estimates The preparation of the Company’s consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at 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, income tax provision, the valuation of warrant liability and the Company's interest rate swaps, and the valuation of deferred taxes. Actual results could differ from those estimates. Reclassifications Certain prior-period amounts have been reclassified for comparative purposes to conform to the current presentation. These reclassifications have no Business Combinations We recognize and measure the assets acquired and liabilities assumed in a business combination based on their estimated fair values at the acquisition date, with any remaining difference recorded as goodwill or gain from a bargain purchase. For material acquisitions, management typically engages an independent valuation specialist to assist with the determination of fair value of the assets acquired, liabilities assumed, noncontrolling interest, if any, and goodwill, based on recognized business valuation methodologies. If the initial accounting for the business combination is incomplete by the end of the reporting period in which the acquisition occurs, an estimate will be recorded. Subsequent to the acquisition, and not one may 4 Recently Adopted Accounting Pronouncements In February 2016, 2016 02, December 15, 2018, August 2018, 2018 11, 842, not 842, January 1, 2019 2018 11. one $2.4 not not not not not 10

Note 3 - Property and Equipment

Note 3 - Property and Equipment	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	Note 3 - Property and Equipment Property and equipment consist of the following (amounts in thousands): September 30, December 31, 2019 2018 Trucks and vehicles $ 59,655 $ 59,535 Water transfer equipment 5,272 4,952 Other equipment 1,286 961 Buildings and improvements 3,222 2,822 Land 378 378 Disposal wells - 400 Total property and equipment 69,813 69,048 Accumulated depreciation (40,445 ) (35,991 ) Property and equipment, net $ 29,368 $ 33,057

Note 4 - Business Combinations

Note 4 - Business Combinations	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Business Combination Disclosure [Text Block]	Note 4 Acquisition of Adler Hot Oil Service, LLC On October 26, 2018, $12.5 $500,000 The consideration paid or to be paid by Enservco under the Agreement originally included: (i) $3.7 $4.8 $2.5 $1.0 2019; $1.0 18 October 26, 2018, On April 4, 2019 $4,800,000 $4,500,000, March 31, 2019 April 10, 2019, nine one one second 2019, not not not no may not not The acquisition of Adler qualified as a business combination and as such, we estimated the fair value of the assets acquired and liabilities assumed as of the closing date. Additionally, we estimated the fair value of contingent consideration given. The fair value measure of the assets acquired and liabilities assumed applied various valuation methods to estimate the value of the intangibles that would provide a fair and reasonable value to a market participant, in view of the facts available at the time. Each valuation method was analyzed to determine which method would generate the most reasonable estimate of value of the Company’s intangible assets as of October 26, 2018. In connection with the execution of the Settlement Agreement, we reviewed our estimates and allocation of the fair value of assets acquired, consideration transferred, and contingent consideration given in connection with the Transaction. In our judgment, the reduction in the fair value of the consideration did not $908,000, $44,000, $300,000 The goodwill of approximately $245,000 None The following tables represent the consideration paid to the Seller and the estimated fair value of the assets acquired and liabilities assumed. Consideration paid to Seller: Cash consideration, including payment to retire Adler debt $ 6,206 Subordinated note, net of discount 4,580 Indemnity holdback at fair value 873 Earnout at fair value 44 Net purchase price $ 11,703 Recognized amounts of identifiable assets acquired and liabilities assumed: Cash $ 43 Accounts receivable, net 1,317 Prepaid expenses and other current assets 239 Property, plant, and equipment 9,664 Intangible assets 1,045 Accounts payable and accrued liabilities (850 ) Total identifiable net assets 11,458 Goodwill 245 Total identifiable assets acquired $ 11,703 Below are consolidated results of operations for the three nine September 30, 2018, January 1, 2018. Three Months Ended Nine Months Ended September 30, September 30, 2018 2018 Total revenues $ 4,223 $ 43,396 Income from continuing operations $ (5,627 ) $ (4,948 ) Income per common share - basic and diluted $ (0.09 ) $ (0.18 ) The pro forma results for the three nine September 30, 2018, - Elimination of Adler interest expense. - Additional interest expense related to long-term debt issued to fund the acquisition. - Adjustment to depreciation expense based on the adjustment of Adler's Property, plant, and equipment to fair value. - Adjustment to remove certain professional fees from Adler's expenses. - Adjustment to remove gain on extinguishment of debt from Adler's results. Subordinated Note In connection with the Transaction and pursuant to the terms of the Agreement, on October 26, 2018, $4.8 $4.5 8% November 30, 2018 $800,000, February 28, 2019 $200,000, April 9, 2019, 10 April 19, 2019, no Second Amendment to Loan and Security Agreement and Consent In connection with the Transaction, on October 26, 2018, August 10, 2017 $37.0 $6.2 $3.0 $2.5 On October 26, 2018,

Note 5 - Intangible Assets

Note 5 - Intangible Assets	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Intangible Assets Disclosure [Text Block]	Note 5 The components of our intangible assets as of September 30, 2019, December 31, 2018, June 30, 2019 December 31, 2018 Customer relationships $ 626 $ 626 Patents and trademarks 441 441 Total intangible assets 1,067 1,067 Accumulated amortization (188 ) (34 ) Net carrying value $ 879 $ 1,033 The useful lives of our intangible assets are estimated to be five $52,000 $154,000 three nine September 30, 2019. The following table represents the amortization expense for the next five twelve September 30 ( 2020 2021 2022 2023 2024 Customer relationships $ 125 $ 125 $ 125 $ 125 $ 11 Patents and trademarks 90 90 90 90 8 Total intangible asset amortization expense $ 215 $ 215 $ 215 $ 215 $ 19

Note 6 - Discontinued Operation

Note 6 - Discontinued Operations	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	Note 6 Dillco Effective November 1, 2018, December 2018, $129,000. $130,000 December 31, 2018. The following table represents a reconciliation of the carrying amounts of major classes of assets and liabilities disclosed as discontinued operations in the Balance Sheets: September 30, December 31, 2019 2018 Carrying amount of major classes of assets included as part of discontinued operations: Accounts receivable, net $ 21 $ 97 Inventories - - Property and equipment, net - 177 Receivable from equipment sales - 760 Prepaid expenses and other current assets 7 7 Total major classes of assets of the discontinued operation $ 28 $ 1,041 Carrying amounts of major classes of liabilities included as part of discontinued operations: Accounts payable and accrued liabilities - 44 Total liabilities included as part of discontinued operations $ - $ 44 The following table represents a reconciliation of the major classes of line items constituting pretax loss of discontinued operations that are disclosed as discontinued operations in the Statements of Operations: Three months ended September 30, 2019 2018 Revenue $ - $ 638 Cost of sales - (733 ) Sales, general, and administrative expenses - (31 ) Depreciation and amortization - (64 ) Other income and expense items that are not major - - Pretax loss of discontinued operations related to major classes of pretax profit - (190 ) Pretax gain on sale at auction - - Loss on disposal - - Pretax loss on impairment - - Income tax benefit - - Total loss on discontinued operations that is presented in the Statements of Operations $ - $ (190 ) Nine months ended September 30, 2019 2018 Revenue $ - $ 2,337 Cost of sales - (2,634 ) Sales, general, and administrative expenses - (53 ) Depreciation and amortization - (231 ) Other income and expense items that are not major - 1 Pretax loss of discontinued operations related to major classes of pretax profit - (580 ) Pretax gain on sale at auction - - Loss on disposal - - Pretax loss on impairment - - Income tax benefit - - Total loss on discontinued operations that is presented in the Statements of Operations $ - $ (580 )

Note 7 - Debt

Note 7 - Debt	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 7 – Debt East West Bank Revolving Credit Facility On August 10, 2017, 2017 which provides for a three $37 2017 85% 85% 2017 no 1 3.5% 1.75%. 0.5% August 10, 2020. 2017 one As of September 30, 2019, $29.5 5.75% $28.0 7.00% $1.5 September 30, 2019, $218,000 2017 June 30, 2019, $753,000 July 3, 2019, July 1, 2019 August 12, 2019, $3.0 $1.5 Under the 2017 ( 1 Fixed Charge Coverage Ratio (“FCCR”) of not 1.10 1.00 January 1, 2017, December 31, 2017, twelve ( 2 twelve 1.20 1.00, o maintain minimum liquidity of $1,500,000 As of September 30, 2019, 2017 Debt Issuance Costs We have capitalized certain debt issuance costs incurred in connection with the Credit Facility discussed above and these costs are being amortized to interest expense over the term of the facility on a straight-line basis. The long-term portion of debt issuance costs of approximately $ 117,000 and $208,000 September 30, 2019, December 31, 2018, three nine 30, 2019 $35,000 $104,000, of these costs to Interest Expense. During the three nine 30, 2018 $26,000 $73,000, of these costs to Interest Expense . Notes Payable Long-term debt (excluding borrowings under our Credit Facility described above) consists of the following (in thousands): September 30, December 31, 2019 2018 Seller Subordinated Note. Interest is at 8%. Matured March 31, 2019 (1) $ - $ 4,000 Subordinated Promissory Note with related party. Interest is at 10% and is paid quarterly. Matures June 28, 2022 1,000 1,000 Subordinated Promissory Note with related party. Interest is at 10% and is paid quarterly. Matures June 28, 2022 1,000 1,000 Real Estate Loan for a facility in North Dakota, interest at 5.75%, and monthly principal and interest payment of $5,254.64 until October 3, 2028. Collateralized by land and property purchased with the loan. 231 258 Vehicle loans for three pickups, interest at 8.59% monthly principal and interest payments of $3,966, matures in August 2021 84 113 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 per agreement with the IRS 53 89 Total 2,368 6,460 Less debt discount (131 ) (299 ) Less current portion (149 ) (4,017 ) Long-term debt, net of debt discount and current portion $ 2,088 $ 2,144 ( 1 4 April 10, 2019, nine April 19, 2019, no Aggregate maturities of debt, (excluding the 2017 ), are as follows (in thousands): Twelve Months Ending September 30, 2020 $ 149 2021 96 2022 2,057 2023 66 2024 - Thereafter - Total $ 2,368

Note 8 - Fair Value Measurement

Note 8 - Fair Value Measurements	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Fair Value Disclosures [Text Block]	Note 8 – Fair Value Measurements The following table presents the Company ’s financial assets and liabilities that were accounted for at fair value on a recurring basis by level within the fair value hierarchy (in thousands): Fair Value Measurement Using Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value Measurement September 30 , 2019 Derivative Instrument Interest rate swap liability $ - $ 23 $ - $ 23 December 31, 2018 Derivative Instrument Interest rate swap asset $ - $ 75 $ - $ 75 Earn-Out Payment liability $ - $ - $ 44 $ 44 Indemnity Holdback Payment liability - - 887 887 Total liabilities which are measured at fair value $ - $ - $ 931 $ 931 The fair value of the interest rate swap is estimated using a discounted cash flow model. Such models involve using market-based observable inputs, including interest rate curves. We incorporate credit valuation adjustments to appropriately reflect both our nonperformance risk and respective counterparty’s nonperformance risk in the fair value measurements, which we have concluded are not not 2. The fair value of the Indemnity Holdback Payment liability was estimated based on the present value using a risk-adjusted interest rate of 9.5%. 9.5%. Certain assets and liabilities are measured at fair value on a nonrecurring basis. These assets and liabilities are not September 30, 2019, December 31, 2018, The Company did not 1, 2 3 three nine 30, 2019 .

Note 9 - Income Taxes

Note 9 - Income Taxes	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 9 – Income Taxes Income tax expense during interim periods is based on applying an estimated annual effective income tax rate to year-to-date income, plus any significant unusual or infrequently occurring items which are recorded in the interim period. The provision for income taxes for the nine September 30, 2019 2018 21 The computation of the annual estimated effective tax rate at each interim period requires certain estimates and significant judgment including, but not may In assessing the realization of deferred tax assets, management considers whether it is more likely than not not Based upon the level of historical taxable income and projections for future taxable income over the periods in which the deferred tax assets are deductible, management recorded a valuation allowance to reduce its net deferred tax assets to zero. During the nine September 30, 2019 2018, $32,000 nine September 30, 2019 2018, $32,000

Note 10 - Commitments and Conti

Note 10 - Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 10 – Commitments and Contingencies Operating Leases On January 1, 2019, 842, January 1, 2019 842, 840. January 1, 2019, $2.4 $2.4 one nine September 30, 2019, $845,000 $98,000 January 1, 2019. Operating lease assets and liabilities are recognized at the lease commencement date. Operating lease liabilities represent the present value of lease payments not not The Company has elected the short-term lease recognition exemption for all applicable classes of underlying assets. Short-term disclosures include only those leases with a term greater than one 12 12 not not The Company elected the expedient to account for lease and non-lease components as a single component for our entire population of operating lease assets. As of September 30, 2019, June 2026. uture minimum lease commitments for these operating lease commitments are as follows (in thousands): Twelve Months Ending September 30, Operating Leases Financing Leases 2020 $ 1,012 $ 269 2021 972 233 2022 859 133 2023 637 - 2024 548 - Thereafter 621 - 4,649 635 Impact of discounting (135 ) (54 ) Discounted value of lease obligations $ 4,514 $ 581 The following table summarizes the components of our gross operating lease costs incurred during the three nine September 30, 2019 ( Three Months Ended Nine Months Ended September 30, 2019 Operating lease expense: Current lease cost $ 321 $ 642 Long-term lease cost 194 387 Total operating lease cost $ 515 $ 1,029 Finance lease expense: Amortization of right-of-use assets $ 76 $ 144 Interest on lease liabilities 8 17 Total lease cost $ 84 $ 161 Our weighted-average lease term and discount rate used during the nine September 30, 2019 Nine Months Ended September 30, 2019 Operating Weighted-average lease term (years) 4.85 Weighted-average discount rate 6.08 % Financing Weighted-average lease term (years) 2.41 Weighted-average discount rate 6.10 % Self-Insurance In June 2015, first $50,000 $1.8 The Company had an accrued liability of approximately $ 11,000 and $60,000 as of September 30, 2019 December 31, 2018, September 30, 2019 December 31, 2018, Effective April 1, 2015, March 31, 2018. $1.8 June 30, 2019, not December 31, 2017, September 30, 2019, $1.8 $1.8 $1.6 $189,000 September 30, 2019, April 1, 2018, no Litigation Enservco and Heat Waves were defendants in a civil lawsuit in federal court in Colorado, Civil Action No. 1:15 00983 two i.e. ‘993 ‘875 March 2019, March 15, 2019, HOTF dismissed its claims with regard to the ‘993 ‘875 not ‘875 March 13, 2019. While the Colorado Case was pending, HOTF was issued two ‘993 ‘875 not March 2015, not ‘993 ‘993 ‘993

Note 11 - Stockholders' Equity

Note 11 - Stockholders' Equity	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	Note 11 – Stockholders ’ Equity Warrants In June 2016, 30,000 $0.36 one 15,000 December 21, 2016 15,000 June 21, 2017. September 30, 2019 , June 21, 2021 $0.70 In June 2017, two five 1,612,902 $0.31 20 May 11, 2017. $0.19 June 28, 2017. June 29, 2018 1,612,902 $0.005 $500,000 $1.4 A summary of warrant activity for the nine months ended September 30, 2019 Weighted Weighted Average Average Remaining Aggregate Exercise Contractual Intrinsic Warrants Shares Price Life (Years) Value Outstanding at December 31, 2018 30,000 $ 0.70 2.5 $ - Issued - - - - Exercised - - - - Forfeited/Cancelled - - - - Outstanding at September 30, 2019 30,000 $ 0.70 1.7 - Exercisable at September 30, 2019 30,000 $ 0.70 1.7 - Stock Issued for Services During the three nine 30, 2019 not

Note 12 - Stock Options and Res

Note 12 - Stock Options and Restricted Stock	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	Note 12 – Stock Options and Restricted Stock Stock Options On July 27, 2010, 2010 “2010 2010 15% January 1, 2016 2010 5,719,069 38,127,129 one three 5 2010 no 2010 September 30, 2019, 474,666 2010 On July 18, 2016, 2016 “2016 September 29, 2016. may 2016 8,000,000 2010 2,391,711 10,391,711 September 30, 2019, 1,472,167 2,034,666 2016 We have no three nine months ended September 30, 2019 three nine months ended September 30, 2018. During the nine September 30 , 2019, no nine 30, 2018, 1,230,002 663,938 nine months ended September 30 2019: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (in thousands) Outstanding at December 31 , 2018 2,544,665 $ 0.85 2.54 $ 93 Granted - - - - Exercised - - - - Forfeited or Expired (597,832 ) 1.50 - - Outstanding at September 30 , 2019 1,946,833 $ 0.73 2.24 $ - Vested or Expected to Vest at September 30, 2019 1,892,332 $ 0.56 2.44 - Exercisable at September 30, 2019 1,892,332 $ 0.56 2.44 $ - The aggregate intrinsic value in the table above represents the total intrinsic value (the difference between the estimated fair value of the Company’s common stock on September 30 , 2019, September 30 , 2019. During the three nine 30 , 2019 $3,000 $74,000, three nine 30 , 2018 $54,000 $188,000 pectively, in sales, general, and administrative expenses. The Company currently expects all outstanding options to vest. Compensation cost is revised if subsequent information indicates that the actual number of options vested due to service is likely to differ from previous estimates. A summary of the status of non-vested shares underlying the options are presented below: Number of Shares Weighted-Average Grant- Date Fair Value Non-vested at December 31, 2018 593,833 $ 0.20 Granted - - Vested (485,999 ) 0.19 Forfeited (53,333 ) 0.22 Non-vested at September 30, 2019 54,501 $ 0.22 As of September 30, 2019, 7,000 f total unrecognized compensation costs related to non-vested shares under the Company’s stock option plans which will be recognized over the remaining weighted-average period of 0.67 years. 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: Number of Shares Weighted-Average Grant- Date Fair Value Restricted shares at December 31, 2018 836,667 $ 0.98 Granted 1,453,000 0.27 Vested (40,001 ) 1.38 Forfeited (215,000 ) 1.00 Restricted shares at September 30, 2019 2,034,666 $ 0.50 During the three nine September 30, 2019, stock-based compensation costs for restricted stock of approximately $ 50,000 and $ 147,000 in sales, general, and administrative expenses. Compensation cost is revised if subsequent information indicates that the actual number of restricted stock vested due to service is likely to differ from previous estimates. The following table sets forth the weighted average outstanding of potentially dilutive instruments for the three nine September 30, 2019 2018: Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Stock options 1,973,862 2,701,716 2,211,863 3,373,321 Warrants 30,000 30,000 30,000 825,404 Weighted average 2,003,862 2,731,716 2,241,863 4,198,725

Note 13 - Segment Reporting

Note 13 - Segment Reporting	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 13 - Segment Reporting Enservco’s reportable business segments are Well Enhancement Services and Water Transfer 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. Well Enhancement Services : This segment utilizes a fleet of frac water heating units, hot oil trucks and acidizing units to provide maintenance and completion services to the domestic oil and gas industry. These services include frac water heating, hot oil services, pressure testing, and acidizing services. Water Transfer Services : This segment utilizes high and low volume pumps, lay flat hose, aluminum pipe and manifolds and related equipment to move fresh and/or recycled water from a water source such as a pond, lake, river, stream, or water storage facility to frac tanks at drilling locations to be used in connection with well completion activities. Unallocated and other 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): Well Enhancement Water Transfer Services Unallocated & Other Total Three Months Ended September 30, 2019: Revenues $ 3,798 $ 899 $ - $ 4,697 Cost of Revenue 4,535 829 480 5,844 Segment Profit (Loss) $ (737 ) $ 70 $ (480 ) $ (1,147 ) Depreciation and $ 1,391 $ 300 $ 12 $ 1,703 Capital Expenditures (Excluding Acquisitions) $ 304 $ 85 $ 249 $ 638 Identifiable assets (1) $ 34,564 $ 2,190 $ 1,449 $ 38,203 Three Months Ended September 30, 2018: Revenues $ 3,200 $ 634 $ - $ 3,834 Cost of Revenue 3,946 650 141 $ 4,737 Segment Profit (Loss) $ (746 ) $ (16 ) $ (141 ) $ (903 ) Depreciation and $ 1,131 $ 283 $ 5 $ 1,419 Capital Expenditures $ 130 $ 30 $ - $ 160 Identifiable assets (1) $ 25,808 $ 3,122 $ 536 $ 29,466 ( 1 Identifiable assets is calculated by summing the balances of accounts receivable, net; inventories; property and equipment, net; and other assets. Well Enhancement Water Transfer Services Unallocated & Other Total Nine Months Ended September 30, 2019: Revenues $ 34,949 $ 3,194 $ - $ 38,143 Cost of Revenue 25,897 4,301 922 31,120 Segment Profit (Loss) $ 9,052 $ (1,107 ) $ (922 ) $ 7,023 Depreciation and Amortization $ 4,208 $ 877 $ 37 $ 5,122 Capital Expenditures (Excluding Acquisitions) $ 559 $ 360 $ 287 $ 1,206 Nine Months Ended September 30, 2018: Revenues $ 29,490 $ 2,558 $ - $ 32,048 Cost of Revenue 22,937 2,586 467 $ 25,990 Segment Profit (Loss) $ 6,553 $ (28 ) $ (467 ) $ 6,058 Depreciation and Amortization $ 3,586 $ 835 $ 17 $ 4,438 Capital Expenditures (Excluding Acquisitions) $ 916 $ 677 $ 8 $ 1,601 The following table reconciles the segment profits reported above to the income from operations reported in the consolidated statements of operations (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Segment profit $ (1,147 ) $ (903 ) $ 7,023 $ 6,058 Sales, general, and administrative expenses (1,723 ) (1,161 ) (4,801 ) (3,750 ) Patent litigation and defense costs - (2 ) (10 ) (77 ) Severance and transition costs (83 ) - (83 ) (633 ) (Loss) gain on disposals of equipment 14 - 2 53 Impairment - - (127 ) - Depreciation and amortization (1,703 ) (1,419 ) (5,122 ) (4,438 ) (Loss) income from Operations $ (4,642 ) $ (3,485 ) $ (3,118 ) $ (2,787 ) Geographic Areas The Company only does business in the United States, in what it believes are three three three nine September 30, 2019 2018 Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 BY GEOGRAPHY Well Enhancement Services: Rocky Mountain Region (1) $ 1,656 $ 1,415 $ 22,644 $ 17,672 Central USA Region (2) 1,992 1,598 8,463 8,675 Eastern USA Region (3) 150 187 3,842 3,143 Total Well Enhancement Services 3,798 3,200 34,949 29,490 Water Transfer Services: Rocky Mountain Region (1) 899 634 3,194 2,558 Central USA Region (2) - - - - Eastern USA Region (3) - - - - Total Water Transfer Services 899 634 3,194 2,558 Total Revenues $ 4,697 $ 3,834 $ 38,143 $ 32,048 Notes to tables: ( 1 Includes the D-J 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 Scoop/Stack Shale in Oklahoma and the Eagle Ford Shale in Texas. ( 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 14 - Subsequent Events

Note 14 - Subsequent Events	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Subsequent Events [Text Block]	Note 14 - Subsequent Events Fourth Amendment to Loan and Security Agreement As of November 12, 2019, 85% 92.5%, 90% December 1, 2019, 85% January 1, 2020 80% March 31, 2020. twelve $1,500,000 1.20 1.00 March 31, 2019. Amended and Restated Subordinated Loan Agreement On November 12, 2019 $500,000 $2.0 $2.5 five 625,000 $0.20

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
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 may
Trade and Other Accounts Receivable, Unbilled Receivables, Policy [Policy Text Block]	Accounts Receivable Accounts receivable are stated at the amounts billed to customers, net of an allowance for 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 status of existing receivables. The losses ultimately incurred could differ materially in the near term from the amounts estimated in determining the allowance. As of September 30, 2019, December 31, 2018, $258,000 $139,000, he three nine September 30, 2019, $168,000 $171,000,
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 three nine 30 2019, not write-downs or write-offs of inventory .
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 used 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 of 5 30 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 earnings.
Lessee, Leases [Policy Text Block]	Leases The Company assesses whether an arrangement is a lease at inception. Leases with an initial term of 12 not not not The Company conducts a major part of its operations from leased facilities. Each of these leases is accounted for as an operating lease. Normally, the Company records rental expense on its operating leases over the lease term as it becomes payable. If rental payments are not ’s facility leases contain renewal clauses and expire through Jun 2026. most cases, management expects that in the normal course of business, leases will be renewed or replaced by other leases. The Company amortizes leasehold improvements over the shorter of the life of the lease or the life of the improvements. As of September 30, 2019, December 31, 2018, 16,000 and $64,000 , respectively. The Company has leased trucks and equipment in the normal course of business, which may rental expense on equipment under operating leases over the lease term as it becomes payable; there were 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 not $127,000 2019.
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
Revenue [Policy Text Block]	Revenue Recognition We have adopted Accounting Standards Update 2014 09, 606, January 1, 2018, no 30 60 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 See Note 13
Earnings Per Share, Policy [Policy Text Block]	Earnings (Loss) Per Share Earnings per Common Share - Basic is computed by dividing net income (loss) by the weighted average number of common shares outstanding for the period. Earnings per Common Share - Diluted earnings is calculated by dividing net income (loss) by the diluted weighted average number of common shares. The diluted weighted average number of common shares is computed using the treasury stock method for common stock that may As of September 30, 2019 and 2018 , there were outstanding stock options and warrants to acquire an aggregate of 1,976,833 and 2,656,099 shares of Company common stock, respectively, which have a potentially dilutive impact on earnings per share. As of September 30, 2019, no September 30 , 2019, of outstanding stock options and warrants.
Derivatives, Policy [Policy Text Block]	Derivative Instruments From time to time, the Company has interest rate swap agreements in place to hedge against changes in interest rates. The fair value of the Company’s derivative instruments are reflected as assets or liabilities on the balance sheet. The accounting for changes in the fair value of a derivative instrument depends on the intended use of the derivative instrument and the resulting designation. Transactions related to the Company’s derivative instruments accounted for as hedges are classified in the same category as the item hedged in the consolidated statement of cash flows. The Company did not 30, 2019 December 31, 2018, On February 23, 2018, 2017 $10.0 2.52%
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. 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 not 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 50% may not Interest and penalties associated with tax positions are recorded in the period assessed as Other expense. 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 2015 2018 2014 2018.
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 (an 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 minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability developed 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 three six 30, 2019 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 U.S. 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 awarded in 2018 2019. The Company used a Monte Carlo simulation program to determine the fair value of market-based restricted stock awarded in 2018 2019.
Use of Estimates, Policy [Policy Text Block]	Management Estimates The preparation of the Company’s consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at 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, income tax provision, the valuation of warrant liability and the Company's interest rate swaps, and the valuation of deferred taxes. Actual results could differ from those estimates.
Reclassification, Policy [Policy Text Block]	Reclassifications Certain prior-period amounts have been reclassified for comparative purposes to conform to the current presentation. These reclassifications have no
Business Combinations Policy [Policy Text Block]	Business Combinations We recognize and measure the assets acquired and liabilities assumed in a business combination based on their estimated fair values at the acquisition date, with any remaining difference recorded as goodwill or gain from a bargain purchase. For material acquisitions, management typically engages an independent valuation specialist to assist with the determination of fair value of the assets acquired, liabilities assumed, noncontrolling interest, if any, and goodwill, based on recognized business valuation methodologies. If the initial accounting for the business combination is incomplete by the end of the reporting period in which the acquisition occurs, an estimate will be recorded. Subsequent to the acquisition, and not one may 4
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Adopted Accounting Pronouncements In February 2016, 2016 02, December 15, 2018, August 2018, 2018 11, 842, not 842, January 1, 2019 2018 11. one $2.4 not not not not not 10

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2019
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 Oil and natural gas well services, including logistics and stimulation Heat Waves Water Management LLC Colorado 100% by Enservco Water Transfer Services. Dillco Fluid Service, Inc Kansas 100% by Enservco Discontinued operation in 2018 HE Services LLC Nevada 100% by Heat Waves No active business operations. Owns construction equipment used by Heat Waves.

Note 3 - Property and Equipme_2

Note 3 - Property and Equipment (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Property, Plant and Equipment [Table Text Block]	September 30, December 31, 2019 2018 Trucks and vehicles $ 59,655 $ 59,535 Water transfer equipment 5,272 4,952 Other equipment 1,286 961 Buildings and improvements 3,222 2,822 Land 378 378 Disposal wells - 400 Total property and equipment 69,813 69,048 Accumulated depreciation (40,445 ) (35,991 ) Property and equipment, net $ 29,368 $ 33,057

Note 4 - Business Combinations

Note 4 - Business Combinations (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Consideration paid to Seller: Cash consideration, including payment to retire Adler debt $ 6,206 Subordinated note, net of discount 4,580 Indemnity holdback at fair value 873 Earnout at fair value 44 Net purchase price $ 11,703 Recognized amounts of identifiable assets acquired and liabilities assumed: Cash $ 43 Accounts receivable, net 1,317 Prepaid expenses and other current assets 239 Property, plant, and equipment 9,664 Intangible assets 1,045 Accounts payable and accrued liabilities (850 ) Total identifiable net assets 11,458 Goodwill 245 Total identifiable assets acquired $ 11,703
Business Acquisition, Pro Forma Information [Table Text Block]	Three Months Ended Nine Months Ended September 30, September 30, 2018 2018 Total revenues $ 4,223 $ 43,396 Income from continuing operations $ (5,627 ) $ (4,948 ) Income per common share - basic and diluted $ (0.09 ) $ (0.18 )

Note 5 - Intangible Assets (Tab

Note 5 - Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	June 30, 2019 December 31, 2018 Customer relationships $ 626 $ 626 Patents and trademarks 441 441 Total intangible assets 1,067 1,067 Accumulated amortization (188 ) (34 ) Net carrying value $ 879 $ 1,033
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	2020 2021 2022 2023 2024 Customer relationships $ 125 $ 125 $ 125 $ 125 $ 11 Patents and trademarks 90 90 90 90 8 Total intangible asset amortization expense $ 215 $ 215 $ 215 $ 215 $ 19

Note 6 - Discontinued Operati_2

Note 6 - Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Disposal Groups, Including Discontinued Operations [Table Text Block]	September 30, December 31, 2019 2018 Carrying amount of major classes of assets included as part of discontinued operations: Accounts receivable, net $ 21 $ 97 Inventories - - Property and equipment, net - 177 Receivable from equipment sales - 760 Prepaid expenses and other current assets 7 7 Total major classes of assets of the discontinued operation $ 28 $ 1,041 Carrying amounts of major classes of liabilities included as part of discontinued operations: Accounts payable and accrued liabilities - 44 Total liabilities included as part of discontinued operations $ - $ 44 Three months ended September 30, 2019 2018 Revenue $ - $ 638 Cost of sales - (733 ) Sales, general, and administrative expenses - (31 ) Depreciation and amortization - (64 ) Other income and expense items that are not major - - Pretax loss of discontinued operations related to major classes of pretax profit - (190 ) Pretax gain on sale at auction - - Loss on disposal - - Pretax loss on impairment - - Income tax benefit - - Total loss on discontinued operations that is presented in the Statements of Operations $ - $ (190 ) Nine months ended September 30, 2019 2018 Revenue $ - $ 2,337 Cost of sales - (2,634 ) Sales, general, and administrative expenses - (53 ) Depreciation and amortization - (231 ) Other income and expense items that are not major - 1 Pretax loss of discontinued operations related to major classes of pretax profit - (580 ) Pretax gain on sale at auction - - Loss on disposal - - Pretax loss on impairment - - Income tax benefit - - Total loss on discontinued operations that is presented in the Statements of Operations $ - $ (580 )

Note 7 - Debt (Tables)

Note 7 - Debt (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	September 30, December 31, 2019 2018 Seller Subordinated Note. Interest is at 8%. Matured March 31, 2019 (1) $ - $ 4,000 Subordinated Promissory Note with related party. Interest is at 10% and is paid quarterly. Matures June 28, 2022 1,000 1,000 Subordinated Promissory Note with related party. Interest is at 10% and is paid quarterly. Matures June 28, 2022 1,000 1,000 Real Estate Loan for a facility in North Dakota, interest at 5.75%, and monthly principal and interest payment of $5,254.64 until October 3, 2028. Collateralized by land and property purchased with the loan. 231 258 Vehicle loans for three pickups, interest at 8.59% monthly principal and interest payments of $3,966, matures in August 2021 84 113 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 per agreement with the IRS 53 89 Total 2,368 6,460 Less debt discount (131 ) (299 ) Less current portion (149 ) (4,017 ) Long-term debt, net of debt discount and current portion $ 2,088 $ 2,144
Schedule of Maturities of Long-term Debt [Table Text Block]	Twelve Months Ending September 30, 2020 $ 149 2021 96 2022 2,057 2023 66 2024 - Thereafter - Total $ 2,368

Note 8 - Fair Value Measureme_2

Note 8 - Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Fair Value Measurement Using Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value Measurement September 30 , 2019 Derivative Instrument Interest rate swap liability $ - $ 23 $ - $ 23 December 31, 2018 Derivative Instrument Interest rate swap asset $ - $ 75 $ - $ 75 Earn-Out Payment liability $ - $ - $ 44 $ 44 Indemnity Holdback Payment liability - - 887 887 Total liabilities which are measured at fair value $ - $ - $ 931 $ 931

Note 10 - Commitments and Con_2

Note 10 - Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Twelve Months Ending September 30, Operating Leases Financing Leases 2020 $ 1,012 $ 269 2021 972 233 2022 859 133 2023 637 - 2024 548 - Thereafter 621 - 4,649 635 Impact of discounting (135 ) (54 ) Discounted value of lease obligations $ 4,514 $ 581
Lease, Cost [Table Text Block]	Three Months Ended Nine Months Ended September 30, 2019 Operating lease expense: Current lease cost $ 321 $ 642 Long-term lease cost 194 387 Total operating lease cost $ 515 $ 1,029 Finance lease expense: Amortization of right-of-use assets $ 76 $ 144 Interest on lease liabilities 8 17 Total lease cost $ 84 $ 161 Nine Months Ended September 30, 2019 Operating Weighted-average lease term (years) 4.85 Weighted-average discount rate 6.08 % Financing Weighted-average lease term (years) 2.41 Weighted-average discount rate 6.10 %

Note 11 - Stockholders' Equity

Note 11 - Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]	Weighted Weighted Average Average Remaining Aggregate Exercise Contractual Intrinsic Warrants Shares Price Life (Years) Value Outstanding at December 31, 2018 30,000 $ 0.70 2.5 $ - Issued - - - - Exercised - - - - Forfeited/Cancelled - - - - Outstanding at September 30, 2019 30,000 $ 0.70 1.7 - Exercisable at September 30, 2019 30,000 $ 0.70 1.7 -

Note 12 - Stock Options and R_2

Note 12 - Stock Options and Restricted Stock (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (in thousands) Outstanding at December 31 , 2018 2,544,665 $ 0.85 2.54 $ 93 Granted - - - - Exercised - - - - Forfeited or Expired (597,832 ) 1.50 - - Outstanding at September 30 , 2019 1,946,833 $ 0.73 2.24 $ - Vested or Expected to Vest at September 30, 2019 1,892,332 $ 0.56 2.44 - Exercisable at September 30, 2019 1,892,332 $ 0.56 2.44 $ -
Schedule of Nonvested Share Activity [Table Text Block]	Number of Shares Weighted-Average Grant- Date Fair Value Non-vested at December 31, 2018 593,833 $ 0.20 Granted - - Vested (485,999 ) 0.19 Forfeited (53,333 ) 0.22 Non-vested at September 30, 2019 54,501 $ 0.22
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]	Number of Shares Weighted-Average Grant- Date Fair Value Restricted shares at December 31, 2018 836,667 $ 0.98 Granted 1,453,000 0.27 Vested (40,001 ) 1.38 Forfeited (215,000 ) 1.00 Restricted shares at September 30, 2019 2,034,666 $ 0.50
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Stock options 1,973,862 2,701,716 2,211,863 3,373,321 Warrants 30,000 30,000 30,000 825,404 Weighted average 2,003,862 2,731,716 2,241,863 4,198,725

Note 13 - Segment Reporting (Ta

Note 13 - Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Well Enhancement Water Transfer Services Unallocated & Other Total Three Months Ended September 30, 2019: Revenues $ 3,798 $ 899 $ - $ 4,697 Cost of Revenue 4,535 829 480 5,844 Segment Profit (Loss) $ (737 ) $ 70 $ (480 ) $ (1,147 ) Depreciation and $ 1,391 $ 300 $ 12 $ 1,703 Capital Expenditures (Excluding Acquisitions) $ 304 $ 85 $ 249 $ 638 Identifiable assets (1) $ 34,564 $ 2,190 $ 1,449 $ 38,203 Three Months Ended September 30, 2018: Revenues $ 3,200 $ 634 $ - $ 3,834 Cost of Revenue 3,946 650 141 $ 4,737 Segment Profit (Loss) $ (746 ) $ (16 ) $ (141 ) $ (903 ) Depreciation and $ 1,131 $ 283 $ 5 $ 1,419 Capital Expenditures $ 130 $ 30 $ - $ 160 Identifiable assets (1) $ 25,808 $ 3,122 $ 536 $ 29,466 Well Enhancement Water Transfer Services Unallocated & Other Total Nine Months Ended September 30, 2019: Revenues $ 34,949 $ 3,194 $ - $ 38,143 Cost of Revenue 25,897 4,301 922 31,120 Segment Profit (Loss) $ 9,052 $ (1,107 ) $ (922 ) $ 7,023 Depreciation and Amortization $ 4,208 $ 877 $ 37 $ 5,122 Capital Expenditures (Excluding Acquisitions) $ 559 $ 360 $ 287 $ 1,206 Nine Months Ended September 30, 2018: Revenues $ 29,490 $ 2,558 $ - $ 32,048 Cost of Revenue 22,937 2,586 467 $ 25,990 Segment Profit (Loss) $ 6,553 $ (28 ) $ (467 ) $ 6,058 Depreciation and Amortization $ 3,586 $ 835 $ 17 $ 4,438 Capital Expenditures (Excluding Acquisitions) $ 916 $ 677 $ 8 $ 1,601
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 Segment profit $ (1,147 ) $ (903 ) $ 7,023 $ 6,058 Sales, general, and administrative expenses (1,723 ) (1,161 ) (4,801 ) (3,750 ) Patent litigation and defense costs - (2 ) (10 ) (77 ) Severance and transition costs (83 ) - (83 ) (633 ) (Loss) gain on disposals of equipment 14 - 2 53 Impairment - - (127 ) - Depreciation and amortization (1,703 ) (1,419 ) (5,122 ) (4,438 ) (Loss) income from Operations $ (4,642 ) $ (3,485 ) $ (3,118 ) $ (2,787 )
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 BY GEOGRAPHY Well Enhancement Services: Rocky Mountain Region (1) $ 1,656 $ 1,415 $ 22,644 $ 17,672 Central USA Region (2) 1,992 1,598 8,463 8,675 Eastern USA Region (3) 150 187 3,842 3,143 Total Well Enhancement Services 3,798 3,200 34,949 29,490 Water Transfer Services: Rocky Mountain Region (1) 899 634 3,194 2,558 Central USA Region (2) - - - - Eastern USA Region (3) - - - - Total Water Transfer Services 899 634 3,194 2,558 Total Revenues $ 4,697 $ 3,834 $ 38,143 $ 32,048

Note 1 - Basis of Presentatio_2

Note 1 - Basis of Presentation - Current Ownership Hierarchy (Details)	9 Months Ended
	Sep. 30, 2019
Heat Waves Hot Oil Service LLC at Colorado [Member]
Subsidiary or Equity Method Investee	100.00%
Adler Hot Oil Service, LLC [Member]
Subsidiary or Equity Method Investee	100.00%
Heat Waves Water Management LLC at Colorado [Member]
Subsidiary or Equity Method Investee	100.00%
Dillco Fluid Service, Inc. at Kansas [Member]
Subsidiary or Equity Method Investee	100.00%
HE Services LLC at Nevada [Member]
Subsidiary or Equity Method Investee	100.00%

Note 2 - Summary of Significa_2

Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jan. 01, 2019	Dec. 31, 2018	Feb. 23, 2018
Accounts Receivable, Allowance for Credit Loss, Current	$ 258,000		$ 258,000			$ 139,000
Accounts Receivable, Credit Loss Expense (Reversal)	168,000		171,000	$ 32,000
Inventory Write-down	0		0
Deferred Rent Credit	16,000		16,000			$ 64,000
Asset Impairment Charges, Total		$ 0	$ 127,000	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options and Warrants, Outstanding, Number	1,976,833	2,656,099	1,976,833	2,656,099
Payments of Dividends, Total			$ 0
Operating Lease, Liability, Total	$ 4,514,000		$ 4,514,000		$ 2,400,000
Accounting Standards Update 2016-02 [Member]
Operating Lease, Liability, Total					$ 2,400,000
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Open Tax Year			2015 2016 2017 2018
State and Local Jurisdiction [Member]
Open Tax Year			2014 2015 2016 2017 2018
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative, Notional Amount							$ 10,000,000
Derivative, Fixed Interest Rate							2.52%
Disposal Wells [Member]
Asset Impairment Charges, Total			$ 127,000
Minimum [Member]
Property, Plant and Equipment, Useful Life			5 years
Maximum [Member]
Property, Plant and Equipment, Useful Life			30 years

Note 3 - Property and Equipme_3

Note 3 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Property and equipment, gross	$ 69,813	$ 69,048
Accumulated depreciation	(40,445)	(35,991)
Property and equipment, net	29,368	33,057
Vehicles [Member]
Property and equipment, gross	59,655	59,535
Water Transfer Equipment [Member]
Property and equipment, gross	5,272	4,952
Property, Plant and Equipment, Other Types [Member]
Property and equipment, gross	1,286	961
Building and Building Improvements [Member]
Property and equipment, gross	3,222	2,822
Land [Member]
Property and equipment, gross	378	378
Disposal Wells [Member]
Property and equipment, gross		$ 400

Note 4 - Business Combination_2

Note 4 - Business Combinations (Details Textual) - USD ($)	Apr. 04, 2019	Feb. 28, 2019	Nov. 30, 2018	Oct. 26, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Aug. 10, 2017
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability							$ (1,252,000)
Goodwill, Ending Balance					$ 546,000		$ 546,000		$ 546,000
Subordinated Note Issued with Acquisition [Member]
Debt Instrument, Face Amount	$ 4,500,000			$ 4,800,000
Debt Instrument, Interest Rate, Stated Percentage				8.00%
Debt Instrument, Periodic Payment, Total		$ 200,000	$ 800,000
Second Amendment to LSA [Member] | East West Bank [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity				$ 37,000,000
Proceeds from Long-term Lines of Credit				6,200,000
Maximum Capital Expenditures				3,000,000
The 2017 Credit Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity										$ 37,000,000
Maximum Capital Expenditures				2,500,000
Adler Hot Oil Service, LLC [Member]
Business Combination, Consideration Transferred, Total				12,500,000
Business Combination, Consideration, Working Capital Adjustments				500,000
Payments to Acquire Businesses, Gross				3,700,000
Business Combination, Consideration Transferred, Liabilities Incurred				4,800,000
Payments to Retire Acquiree's Debt				2,500,000
Goodwill, Ending Balance				245,000
Adler Hot Oil Service, LLC [Member] | Seller Subordinated Note [Member]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities	300,000
Adler Hot Oil Service, LLC [Member] | Earn-out Payment Subject to Satisfaction of EBITDA-related Performance [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High				1,000,000
Adler Hot Oil Service, LLC [Member] | Cash Held by Acquier, Subject Offset by Indemnification Obligations [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High				$ 1,000,000
Adler Hot Oil Service, LLC [Member] | Indemnity Holdback Payment [Member]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	908,000
Adler Hot Oil Service, LLC [Member] | Earn-out Payment [Member]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ 44,000

Note 4 - Business Combination_3

Note 4 - Business Combinations - Consideration Transferred and Assets Acquired and Liabilities Assumed (Details) - USD ($)	Oct. 26, 2018	Sep. 30, 2019	Dec. 31, 2018
Goodwill, Ending Balance		$ 546,000	$ 546,000
Adler Hot Oil Service, LLC [Member]
Cash consideration, including payment to retire Adler debt	$ 6,206,000
Subordinated note, net of discount	4,580,000
Net purchase price	11,703,000
Cash	43,000
Accounts receivable, net	1,317,000
Prepaid expenses and other current assets	239,000
Property, plant, and equipment	9,664,000
Intangible assets	1,045,000
Accounts payable and accrued liabilities	(850,000)
Total identifiable net assets	11,458,000
Goodwill, Ending Balance	245,000
Total identifiable assets acquired	11,703,000
Adler Hot Oil Service, LLC [Member] | Cash Held by Acquier, Subject Offset by Indemnification Obligations [Member]
Contingent consideration, net of discount	873,000
Adler Hot Oil Service, LLC [Member] | Earn-out Payment Subject to Satisfaction of EBITDA-related Performance [Member]
Contingent consideration, net of discount	$ 44,000

Note 4 - Business Combination_4

Note 4 - Business Combinations - Pro Forma Consolidated Results of Operations (Details) - Adler Hot Oil Service, LLC [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Total revenues	$ 4,223	$ 43,396
Income from continuing operations	$ (5,627)	$ (4,948)
Income per common share - basic and diluted (in dollars per share)	$ (0.09)	$ (0.18)

Note 5 - Intangible Assets (Det

Note 5 - Intangible Assets (Details Textual) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Finite-Lived Intangible Asset, Useful Life		5 years
Amortization of Intangible Assets, Total	$ 52,000	$ 154,000

Note 5 - Intangible Assets - Co

Note 5 - Intangible Assets - Components of Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Intangible assets, gross	$ 1,067	$ 1,067
Accumulated amortization	(188)	(34)
Net carrying value	879	1,033
Customer Relationships [Member]
Intangible assets, gross	626	626
Intellectual Property [Member]
Intangible assets, gross	$ 441	$ 441

Note 5 - Intangible Assets - Ex

Note 5 - Intangible Assets - Expected Future Amortization Expense (Details) $ in Thousands	Sep. 30, 2019USD ($)
Expected amortization expense, 2020	$ 215
Expected amortization expense, 2021	215
Expected amortization expense, 2022	215
Expected amortization expense, 2023	215
Expected amortization expense, 2024	19
Customer Relationships [Member]
Expected amortization expense, 2020	125
Expected amortization expense, 2021	125
Expected amortization expense, 2022	125
Expected amortization expense, 2023	125
Expected amortization expense, 2024	11
Patents and Trademarks [Member]
Expected amortization expense, 2020	90
Expected amortization expense, 2021	90
Expected amortization expense, 2022	90
Expected amortization expense, 2023	90
Expected amortization expense, 2024	$ 8

Note 6 - Discontinued Operati_3

Note 6 - Discontinued Operations (Details Textual) - Dillco Fluid Service, Inc [Member] - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax, Total
Discontinued Operation, Provision for Loss (Gain) on Disposal, before Income Tax, Total
Discontinued Operations, Disposed of by Sale [Member]
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax, Total	$ 129,000
Discontinued Operation, Provision for Loss (Gain) on Disposal, before Income Tax, Total				$ 130,000

Note 6 - Discontinued Operati_4

Note 6 - Discontinued Operations - Information by Major Classes of Line Items Disclosed as Discontinued Operations in the Consolidated Statements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Pretax loss of discontinued operations related to major classes of pretax profit		$ (190)		$ (580)
Income tax benefit
Total loss on discontinued operations that is presented in the Statements of Operations		(190)	0	(580)
Dillco Fluid Service, Inc [Member]
Accounts receivable, net	21		21		$ 97
Inventories
Property and equipment, net					177
Receivable from equipment sales					760
Prepaid expenses and other current assets	7		7		7
Total major classes of assets of the discontinued operation	28		28		1,041
Accounts payable and accrued liabilities					44
Total liabilities included as part of discontinued operations					$ 44
Revenue		638		2,337
Cost of sales		(733)		(2,634)
Sales, general, and administrative expenses		(31)		(53)
Depreciation and amortization		(64)		(231)
Other income and expense items that are not major				1
Pretax loss of discontinued operations related to major classes of pretax profit		(190)		(580)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax, Total
Loss on disposal
Pretax loss on impairment
Income tax benefit
Total loss on discontinued operations that is presented in the Statements of Operations		$ (190)		$ (580)

Note 7 - Debt (Details Textual)

Note 7 - Debt (Details Textual)	Aug. 10, 2017USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Aug. 12, 2019USD ($)	Aug. 11, 2019USD ($)	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Interest Expense [Member]
Amortization of Debt Issuance Costs		$ 35,000	$ 26,000	$ 104,000	$ 73,000
Other Assets [Member]
Unamortized Debt Issuance Expense		117,000		117,000					$ 208,000
The 2017 Credit Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member]
Debt Instrument, Term	3 years
Line of Credit Facility, Maximum Borrowing Capacity	$ 37,000,000
Line of Credit Facility, Maximum Borrowing Capacity, Percent of Eligible Receivables	85.00%
Line of Credit Facility, Maximum Borrowing Capacity, Percentage of Trucks and Equipment	85.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.50%
Line of Credit, Current		29,500,000		29,500,000
Line of Credit Facility, Allowable Capital Expenditures						$ 1,500,000	$ 3,000,000
Line of Credit Facility, Remaining Borrowing Capacity		218,000		218,000
Line of Credit Facility, Excess Borrowing Over Borrowing Capacity								$ 753,000
Line of Credit Facility, Covenant Compliance, Minimum Fixed Charge Coverage Ratio	1.1
Line of Credit Facility, Covenant Compliance, Trailing Twelve Month Fixed Charge Coverage Ratio	1.2
Line of Credit Facility, Covenant Compliance, Minimum Liquidity	$ 1,500,000
The 2017 Credit Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	3.50%
Line of Credit, Current		$ 28,000,000		$ 28,000,000
Line of Credit Facility, Interest Rate at Period End		5.75%		5.75%
The 2017 Credit Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member] | Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	1.75%
Line of Credit Facility, Interest Rate at Period End		7.00%		7.00%
Line of Credit Facility, Allowable Capital Expenditures		$ 1,500,000		$ 1,500,000

Note 7 - Debt - Summary of Long

Note 7 - Debt - Summary of Long-term Debt (Details) - USD ($) $ in Thousands		Sep. 30, 2019	Dec. 31, 2018
Long-term debt		$ 2,368
Long-term debt, gross		2,368	$ 6,460
Less debt discount		(131)	(299)
Less current portion		(149)	(4,017)
Long-term debt, net of debt discount and current portion		2,088	2,144
Real Estate Loan 1 [Member]
Long-term debt		231	258
Vehicle Loans for Trucks [Member]
Long-term debt		84	113
Note Payable To Seller Of Heat Waves [Member]
Long-term debt		53	89
Seller Subordinated Note [Member] | Subordinated Debt [Member]
Long-term debt	[1]		4,000
Subordinated Promissory Note 1 [Member] | Subordinated Debt [Member]
Long-term debt		1,000	1,000
Subordinated Promissory Note 2 [Member] | Subordinated Debt [Member]
Long-term debt		$ 1,000	$ 1,000
[1]	In accordance with the Settlement Agreement discussed in Notes 4 the agreed upon due date was extended to April 10, 2019, subject to a nine-day grace period. On April 19, 2019, Enservco made the final payment to settle the principal balance and accrued interest on the Seller Subordinated Note and has no further obligations to the Seller.

Note 7 - Debt - Summary of Lo_2

Note 7 - Debt - Summary of Long-term Debt (Details) (Parentheticals) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Real Estate Loan 1 [Member]
Interest rate	5.75%	5.75%
Monthly principal and interest payment	$ 5,254,640	$ 5,254,640
Vehicle Loans for Trucks [Member]
Interest rate	8.59%	8.59%
Monthly principal and interest payment	$ 3,966,000	$ 3,966,000
Note Payable To Seller Of Heat Waves [Member]
Monthly principal and interest payment	$ 36,000,000	$ 36,000,000
Seller Subordinated Note [Member] | Subordinated Debt [Member]
Interest rate	8.00%	8.00%
Subordinated Promissory Note 1 [Member] | Subordinated Debt [Member]
Interest rate	10.00%	10.00%
Subordinated Promissory Note 2 [Member] | Subordinated Debt [Member]
Interest rate	10.00%	10.00%

Note 7 - Debt - Summary of Matu

Note 7 - Debt - Summary of Maturities of Long-term Debt (Details) $ in Thousands	Sep. 30, 2019USD ($)
2020	$ 149
2021	96
2022	2,057
2023	66
2024
Thereafter
Total	$ 2,368

Note 8 - Fair Value Measureme_3

Note 8 - Fair Value Measurements (Details Textual) - Measurement Input, Risk Adjusted Interest Rate [Member]	Sep. 30, 2019
Indemnification Liability, Measurement Input	0.095
Business Combination, Contingent Consideration, Liability, Measurement Input	0.095

Note 8 - Fair Value Measureme_4

Note 8 - Fair Value Measurements - Financial Assets and Liabilities Measured on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Total liabilities which are measured at fair value		$ 931
Interest Rate Swap [Member]
Derivative liabilities	$ 23
Interest rate swap asset		75
Earn Out Payment Liability [Member]
Derivative liabilities		44
Indemnity Holdback Payment Liability [Member]
Derivative liabilities		887
Fair Value, Inputs, Level 1 [Member]
Total liabilities which are measured at fair value
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member]
Derivative liabilities
Interest rate swap asset
Fair Value, Inputs, Level 1 [Member] | Earn Out Payment Liability [Member]
Derivative liabilities
Fair Value, Inputs, Level 1 [Member] | Indemnity Holdback Payment Liability [Member]
Derivative liabilities
Fair Value, Inputs, Level 2 [Member]
Total liabilities which are measured at fair value
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Derivative liabilities	23
Interest rate swap asset		75
Fair Value, Inputs, Level 2 [Member] | Earn Out Payment Liability [Member]
Derivative liabilities
Fair Value, Inputs, Level 2 [Member] | Indemnity Holdback Payment Liability [Member]
Derivative liabilities
Fair Value, Inputs, Level 3 [Member]
Total liabilities which are measured at fair value		931
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member]
Derivative liabilities
Interest rate swap asset
Fair Value, Inputs, Level 3 [Member] | Earn Out Payment Liability [Member]
Derivative liabilities		44
Fair Value, Inputs, Level 3 [Member] | Indemnity Holdback Payment Liability [Member]
Derivative liabilities		$ 887

Note 9 - Income Taxes (Details

Note 9 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%	21.00%
Income Tax Expense (Benefit), Total			$ 32,000	$ 32,000

Note 10 - Commitments and Con_3

Note 10 - Commitments and Contingencies (Details Textual) - USD ($)	Jan. 01, 2019	Jun. 30, 2015	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018
Operating Lease, Right-of-Use Asset	$ 2,400,000		$ 4,450,000		$ 4,450,000	$ 4,450,000
Operating Lease, Liability, Total	2,400,000		4,514,000		4,514,000	4,514,000
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability					845,000
Cumulative Effect on Retained Earnings, Net of Tax, Total	$ 98,000		(10,000)	$ 108,000
Self-insured Amount per Individual Claim		$ 50,000
Self-insured, Maximum Coverage Policy		$ 1,800,000
Self Insurance Reserve			11,000		11,000	11,000	60,000
Workers' Compensation, Maximum Coverage Policy							$ 1,800,000
Workers' Compensation, Accumulated Payments on Claims			1,800,000		1,800,000	1,800,000
Workers' Compensation, Estimated Accruals						1,600,000
Other Noncurrent Assets [Member]
Worker's Compensation, Prepaid Amount			$ 189,000		$ 189,000	$ 189,000

Note 10 - Commitments and Con_4

Note 10 - Commitments and Contingencies - Future Minimum Lease Commitments (Details) - USD ($)	Sep. 30, 2019	Jan. 01, 2019
2020, operating leases	$ 1,012,000
2020, financing leases	269,000
2021, operating leases	972,000
2021, financing leases	233,000
2022, operating leases	859,000
2022, financing leases	133,000
2023, operating leases	637,000
2023, financing leases
2024, operating leases	548,000
2024, financing leases
Thereafter, operating leases	621,000
Thereafter, financing leases
Operating leases	4,649,000
Financing leases	635,000
Impact of discounting, operating leases	(135,000)
Impact of discounting, financing leases	(54,000)
Discounted value of lease obligations, operating leases	4,514,000	$ 2,400,000
Discounted value of lease obligations, financing leases	$ 581,000

Note 10 - Commitments and Con_5

Note 10 - Commitments and Contingencies - Lease Cost (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2019USD ($)
Current lease cost	$ 321	$ 642
Long-term lease cost	194	387
Total operating lease cost	515	1,029
Amortization of right-of-use assets	76	144
Interest on lease liabilities	8	17
Total lease cost	$ 84	$ 161
Weighted-average lease term (years), operating (Year)	4 years 310 days	4 years 310 days
Weighted-average discount rate, operating	6.08%	6.08%
Weighted-average lease term (years), financing (Year)	2 years 149 days	2 years 149 days
Weighted-average discount rate, financing	6.10%	6.10%

Note 11 - Stockholders' Equit_2

Note 11 - Stockholders' Equity (Details Textual) - USD ($)	Jun. 29, 2018	Jun. 21, 2017	Dec. 21, 2016	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Stock Issued During Period, Shares, Issued for Services						0	0
Cross River Partners, L.P. [Member]
Class of Warrant or Right, Issued During Period				1,612,902
Class of Warrant or Right, Grants in Period, Grant-date Fair Value				$ 0.19
Warrants Expiration Period				5 years
Class of Warrant or Right, Issued During Period, Exercise Price				$ 0.31
Class of Warrant or Right, Exercised During Period	1,612,902
Class of Warrant or Right, Exercised During Period, Exercise Price	$ 0.005
Proceeds from Warrant Exercises	$ 500,000
Aggregate Intrinsic Value Of Warrants Exercised	$ 1,400,000
Warrants Issued in June 2016 [Member]
Class of Warrant or Right, Issued During Period					30,000
Class of Warrant or Right, Grants in Period, Grant-date Fair Value					$ 0.36
Class of Warrants or Rights, Vesting Period					1 year
Class of Warrants or Rights, Vested During the Period		15,000	15,000
Class of Warrant or Right, Exercise Price of Warrants or Rights						$ 0.70	$ 0.70	$ 0.70	$ 0.70
Class of Warrant or Right, Issued During Period, Exercise Price
Class of Warrant or Right, Exercised During Period
Class of Warrant or Right, Exercised During Period, Exercise Price

Note 11 - Stockholders Equity -

Note 11 - Stockholders Equity - Summary of Warrant Activity (Details) - Warrants Issued in June 2016 [Member] - USD ($)	1 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2016	Sep. 30, 2019	Dec. 31, 2018
Outstanding (in shares)		30,000
Outstanding, weighted average exercise price (in dollars per share)		$ 0.70
Outstanding, weighted average remaining contractual life (Year)		1 year 255 days	2 years 182 days
Outstanding, aggregate intrinsic value
Issued (in shares)	30,000
Issued, weighted average exercise price (in dollars per share)
Issued, weighted average remaining contractual life (Year)
Issued, aggregate intrinsic value
Exercised (in shares)
Exercised, weighted average exercise price (in dollars per share)
Forfeited/Cancelled (in shares)
Forfeited/Cancelled, weighted average exercise price (in dollars per share)
Forfeited/Cancelled (in dollars per share)
Outstanding (in shares)		30,000	30,000
Outstanding, weighted average exercise price (in dollars per share)		$ 0.70	$ 0.70
Exercisable (in shares)		30,000
Exercisable, weighted average exercise price (in dollars per share)		$ 0.70
Exercisable, weighted average remaining contractual life (Year)		1 year 255 days
Exercisable, aggregate intrinsic value

Note 12 - Stock Options and R_3

Note 12 - Stock Options and Restricted Stock (Details Textual) - USD ($)	Jan. 01, 2016	Jul. 27, 2010	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Jul. 18, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance			1,946,833		1,946,833		2,544,665
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			0	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period					0	1,230,002
Stock Issued During Period, Shares, New Issues						663,938
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total			$ 7,000		$ 7,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition					244 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance			2,034,666		2,034,666		836,667
Selling, General and Administrative Expenses [Member]
Share-based Payment Arrangement, Expense			$ 3,000	$ 54,000	$ 74,000	$ 188,000
Selling, General and Administrative Expenses [Member] | Restricted Stock [Member]
Share-based Payment Arrangement, Expense			$ 50,000		$ 147,000
Option Plan 2010 Member
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum		15.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	5,719,069		0		0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance	38,127,129		474,666		474,666
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized								2,391,711
Option Plan 2010 Member | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	1 year
Option Plan 2010 Member | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
The 2016 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant								10,391,711
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance			1,472,167		1,472,167
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized								8,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance			2,034,666		2,034,666

Note 12 - Stock Options and R_4

Note 12 - Stock Options and Restricted Stock - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Outstanding (in shares)				2,544,665
Outstanding, weighted average exercise price (in dollars per share)				$ 0.85
Outstanding, weighted average remaining contractual life (Year)				2 years 87 days		2 years 197 days
Outstanding, aggregate intrinsic value						$ 93
Granted (in shares)		0	0	0	0
Granted, weighted average exercise price (in dollars per share)
Granted, weighted average remaining contractual life (Year)
Granted, aggregate intrinsic value
Exercised (in shares)				0	(1,230,002)
Exercised, weighted average exercise price (in dollars per share)
Forfeited or Expired (in shares)	[1]			(597,832)
Forfeited or Expired, weighted average exercise price (in dollars per share)				$ 1.50
Forfeited or Expired, weighted average remaining contractual life (Year)
Outstanding (in shares)		1,946,833		1,946,833		2,544,665
Outstanding, weighted average exercise price (in dollars per share)		$ 0.73		$ 0.73		$ 0.85
Vested or Expected to Vest (in shares)		1,892,332		1,892,332
Vested or Expected to Vest, weighted average exercise price (in dollars per share)		$ 0.56		$ 0.56
Vested or Expected to Vest, weighted average remaining contractual life (Year)				2 years 160 days
Vested or Expected, aggregate intrinsic value
Exercisable (in shares)		1,892,332		1,892,332
Exercisable, weighted average exercise price (in dollars per share)		$ 0.56		$ 0.56
Exercisable, weighted average remaining contractual life (Year)				2 years 160 days
Exercisable, aggregate intrinsic value
[1]	1,230,002 shares exercised using the cashless option resulted in 663,938 shares of common stock being issued.

Note 12 - Stock Options and R_5

Note 12 - Stock Options and Restricted Stock - Summary of the Status of Non-vested Shares (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Balance, non-vested (in shares)			593,833
Balance, non-vested, weighted average grant date fair value (in dollars per share)			$ 0.20
Granted, non-vested (in shares)	0	0	0	0
Granted, weighted average grant date fair value (in dollars per share)
Vested, non-vested (in shares)			(485,999)
Vested, weighted average grant date fair value (in dollars per share)			$ 0.19
Forfeited, non-vested (in shares)			(53,333)
Forfeited, weighted average grant date fair value (in dollars per share)			$ 0.22
Balance, non-vested (in shares)	54,501		54,501
Balance, non-vested, weighted average grant date fair value (in dollars per share)	$ 0.22		$ 0.22

Note 12 - Stock Options and R_6

Note 12 - Stock Options and Restricted Stock - Summary of Restricted Stock Option (Details) - Restricted Stock [Member]	9 Months Ended
	Sep. 30, 2019$ / sharesshares
Balance, Restricted shares (in shares) | shares	836,667
Balance, Restricted shares, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 0.98
Granted, Restricted shares (in shares) | shares	1,453,000
Granted, Restricted shares, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 0.27
Vested, Restricted shares (in shares) | shares	(40,001)
Vested, Restricted shares, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.38
Forfeited, Restricted shares (in shares) | shares	(215,000)
Forfeited, Restricted shares, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 1
Balance, Restricted shares (in shares) | shares	2,034,666
Balance, Restricted shares, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 0.50

Note 12 - Stock Options and R_7

Note 12 - Stock Options and Restricted Stock - Potentially Dilutive Instruments (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Potentially dilutive instruments (in shares)	2,003,862	2,731,716	2,241,863	4,198,725
Share-based Payment Arrangement, Option [Member]
Potentially dilutive instruments (in shares)	1,973,862	2,701,716	2,211,863	3,373,321
Warrant [Member]
Potentially dilutive instruments (in shares)	30,000	30,000	30,000	825,404

Note 13 - Segment Reporting - R

Note 13 - Segment Reporting - Reportable Segments (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues		$ 4,697	$ 3,834	$ 38,143	$ 32,048
Cost of Revenue		5,844	4,737	31,120	25,990
Segment Profit (Loss)		(1,147)	(903)	7,023	6,058
Depreciation and amortization		1,703	1,419	5,122	4,438
Capital Expenditures (Excluding Acquisitions)		638	160	1,206	1,601
Identifiable assets (1)	[1]	38,203	29,466	38,203	29,466
Well Enhancement Services Segment [Member]
Revenues		3,798	3,200	34,949	29,490
Cost of Revenue		4,535	3,946	25,897	22,937
Segment Profit (Loss)		(737)	(746)	9,052	6,553
Depreciation and amortization		1,391	1,131	4,208	3,586
Capital Expenditures (Excluding Acquisitions)		304	130	559	916
Identifiable assets (1)	[1]	34,564	25,808	34,564	25,808
Water Transfer Services Segment [Member]
Revenues		899	634	3,194	2,558
Cost of Revenue		829	650	4,301	2,586
Segment Profit (Loss)		70	(16)	(1,107)	(28)
Depreciation and amortization		300	283	877	835
Capital Expenditures (Excluding Acquisitions)		85	30	360	677
Identifiable assets (1)	[1]	2,190	3,122	2,190	3,122
Unallocated and Other Segments [Member]
Revenues
Cost of Revenue		480	141	922	467
Segment Profit (Loss)		(480)	(141)	(922)	(467)
Depreciation and amortization		12	5	37	17
Capital Expenditures (Excluding Acquisitions)		249		287	8
Identifiable assets (1)	[1]	$ 1,449	$ 536	$ 1,449	$ 536
[1]	Identifiable assets is calculated by summing the balances of accounts receivable, net; inventories; property and equipment, net; and other assets.

Note 13 - Segment Reporting - I

Note 13 - Segment Reporting - Income From Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Sales, general, and administrative expenses	$ (1,723)	$ (1,161)	$ (4,801)	$ (3,750)
Patent litigation and defense costs		(2)	(10)	(77)
Severance and transition costs	(83)		(83)	(633)
(Loss) gain on disposals of equipment	14		2	53
Impairment		0	(127)	0
Depreciation and amortization	(1,703)	(1,419)	(5,122)	(4,438)
(Loss) income from Operations	$ (4,642)	$ (3,485)	$ (3,118)	$ (2,787)

Note 13 - Segment Reporting -_2

Note 13 - Segment Reporting - Revenues by Geography (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue		$ 4,697	$ 3,834	$ 38,143	$ 32,048
Well Enhancement Services Segment [Member]
Revenue		3,798	3,200	34,949	29,490
Water Transfer Services Segment [Member]
Revenue		899	634	3,194	2,558
Rocky Mountain Region [Member] | Well Enhancement Services Segment [Member]
Revenue	[1]	1,656	1,415	22,644	17,672
Rocky Mountain Region [Member] | Water Transfer Services Segment [Member]
Revenue	[1]	899	634	3,194	2,558
Central USA Region [Member] | Well Enhancement Services Segment [Member]
Revenue	[2]	1,992	1,598	8,463	8,675
Central USA Region [Member] | Water Transfer Services Segment [Member]
Revenue	[2]
Eastern USA Region [Member] | Well Enhancement Services Segment [Member]
Revenue	[3]	150	187	3,842	3,143
Eastern USA Region [Member] | Water Transfer Services Segment [Member]
Revenue	[3]
[1]	Includes the D-J 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 Scoop/Stack Shale in Oklahoma and the Eagle Ford Shale in Texas.
[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 14 - Subsequent Events (De

Note 14 - Subsequent Events (Details Textual) - USD ($)	Nov. 12, 2019	Mar. 31, 2020	Jan. 01, 2020	Dec. 01, 2019	Sep. 30, 2019
Subsequent Event [Member] | Warrant In Connection With Amended Subordinated Loan [Member]
Warrants and Rights Outstanding, Term	5 years
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	625,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.20
Fourth Amendment to Loan and Security Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member]
Line of Credit, Apprasied Value of Eligible Equipment, Advance Rate					85.00%
Fourth Amendment to Loan and Security Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member] | Forecast [Member]
Line of Credit, Apprasied Value of Eligible Equipment, Advance Rate		80.00%	85.00%	90.00%
Fourth Amendment to Loan and Security Agreement [Member] | East West Bank [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Line of Credit, Apprasied Value of Eligible Equipment, Advance Rate	92.50%
Line of Credit Facility, Covenant Compliance, Minimum Liquidity	$ 1,500,000
Line of Credit Facility, Covenant Compliance, Trailing Twelve Month Fixed Charge Coverage Ratio	120.00%
Amended Subordinated Loan [Member] | Cross River Partners, L.P. [Member] | Subordinated Debt [Member]
Debt Instrument, Face Amount					$ 2,000,000
Amended Subordinated Loan [Member] | Cross River Partners, L.P. [Member] | Subsequent Event [Member] | Subordinated Debt [Member]
Debt Instrument, Increase (Decrease), Net, Total	$ 500,000
Debt Instrument, Face Amount	$ 2,500,000