Enservco (ENSV) 10-Q 14 Aug 15 2015 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Aug. 07, 2015
Entity Registrant Name	Enservco Corporation
Entity Central Index Key	319,458
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		38,111,158
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Current Assets
Cash and cash equivalents	$ 760,422	$ 954,058
Accounts receivable, net	3,877,885	14,679,858
Prepaid expenses and other current assets	998,963	1,540,667
Inventories	304,845	390,081
Income tax receivable	1,905,641	1,776,035
Deferred tax asset	135,055	135,055
Total current assets	7,982,811	19,475,754
Property and Equipment, net	38,165,263	37,789,004
Goodwill	301,087	301,087
Other Assets	659,053	716,836
TOTAL ASSETS	47,108,214	58,282,681
Current Liabilities
Accounts payable and accrued liabilities	1,707,638	5,472,163
Current portion of long-term debt	329,219	340,520
Total current liabilities	2,036,857	5,812,683
Long-Term Liabilities
Senior revolving credit facility	18,552,894	28,634,037
Long-term debt, less current portion	645,409	801,968
Deferred income taxes, net	5,801,846	4,992,681
Total long-term liabilities	25,000,149	34,428,686
Total liabilities	$ 27,037,006	$ 40,241,369
Commitments and Contingencies (Note 7)
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, 38,189,758 and 37,159,815 shares issued, respectively; 103,600 shares of treasury stock; and 38,086,158 and 37,056,215 shares outstanding, respectively	$ 190,432	$ 185,282
Additional paid-in-capital	13,498,766	12,751,389
Accumulated earnings	6,382,010	5,104,641
Total stockholders’ equity	20,071,208	18,041,312
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 47,108,214	$ 58,282,681

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Jun. 30, 2015	Dec. 31, 2014
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)	38,189,758	37,159,815
Common stock, shares outstanding (in shares)	38,086,158	37,056,215
Treasury stock (in shares)	103,600	103,600

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues	$ 5,702,549	$ 7,294,856	$ 24,842,046	$ 32,536,901
Cost of Revenue	5,563,875	6,545,891	16,828,160	22,968,362
Gross Profit	138,674	748,965	8,013,886	9,568,539
Operating Expenses
General and administrative expenses	940,373	1,132,259	2,160,726	2,089,640
Patent litigation and defense costs	100,197	44,271	439,214	116,421
Depreciation and amortization	1,439,838	726,424	2,762,772	1,403,888
Total operating expenses	2,480,408	1,902,954	5,362,712	3,609,949
(Loss) Income from Operations	(2,341,734)	(1,153,989)	2,651,174	5,958,590
Other Income (Expense)
Interest expense	(247,220)	(241,903)	(500,431)	(495,428)
(Loss) Gain on disposals of equipment	(1,071)	(5,129)	(1,071)	9,237
Other income	25,351	7,050	32,251	13,950
Total Other Expense	(222,940)	(239,982)	(469,251)	(472,241)
(Loss) Income Before Tax Expense	(2,564,674)	(1,393,971)	2,181,923	5,486,349
Income Tax Expense (Benefit)	950,163	542,952	(904,554)	(2,151,412)
Net (Loss) Income	$ (1,614,511)	(851,019)	$ 1,277,369	3,334,937
Other Comprehensive Income (Loss)
Unrealized gain (loss) on interest rate swaps, net of tax		483		(3,290)
Settlements – interest rate swap		6,517		13,115
Reclassified into earnings – interest rate swap		(6,517)		(13,115)
Total Other Comprehensive Income (Loss)		483		(3,290)
Comprehensive (Loss) Income	$ (1,614,511)	$ (850,536)	$ 1,277,369	$ 3,331,647
(Loss) Earnings per Common Share – Basic (in dollars per share)	$ (0.04)	$ (0.02)	$ 0.03	$ 0.09
(Loss) Earnings per Common Share – Diluted (in dollars per share)	$ (0.04)	$ (0.02)	$ 0.03	$ 0.09
Basic weighted average number of common shares outstanding (in shares)	37,761,961	36,514,889	37,557,451	36,126,647
Add: Dilutive shares assuming exercise of options and warrants (in shares)			1,883,281	2,466,052
Diluted weighted average number of common shares outstanding (in shares)	37,761,961	36,514,889	39,440,732	38,592,699

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Cash Flows (Unaudited) - Scenario, Unspecified [Domain] - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net (loss) income	$ (1,614,511)	$ (851,019)	$ 1,277,369	$ 3,334,937
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization	1,439,838	726,424	2,762,772	1,403,888
Loss (gain) on disposal of equipment	1,071	5,129	1,071	(9,237)
Deferred income taxes	(852,517)	129,780	809,165	129,831
Stock-based compensation	180,211	71,935	271,271	148,280
Amortization of debt issuance costs	28,891	81,325	57,783	162,649
Bad debt expense	8,620	40,000	12,845	50,000
Changes in operating assets and liabilities
Accounts receivable	11,320,218	13,781,701	10,789,128	7,642,639
Inventories	38,992	(75,912)	85,236	(128,721)
Prepaid expense and other current assets	156,061	$ (193,869)	541,704	$ (563,765)
Income taxes receivable	$ (129,606)		$ (129,606)
Other non-current assets				$ (14,001)
Accounts payable and accrued liabilities	$ (3,978,717)	$ (707,265)	$ (3,764,525)	(642,754)
Income taxes payable	(56,205)	(1,786,322)		(302,008)
Net cash provided by operating activities	6,542,346	11,221,907	$ 12,714,213	11,211,738
INVESTING ACTIVITIES
Purchases of property and equipment	(792,723)	$ (5,099,341)	(3,145,102)	(6,604,490)
Proceeds from sale and disposal of equipment	5,000		5,000	50,000
Net cash used in investing activities	(787,723)	$ (5,099,341)	(3,140,102)	$ (6,554,490)
FINANCING ACTIVITIES
Net line of credit payments	(5,988,003)	(1,158,971)	(10,081,143)
Repayment on long-term debt	$ (37,335)	(578,715)	(167,860)	$ (1,156,989)
Proceeds from exercise of warrants		98,175	77,100	187,804
Proceeds from exercise of stock options	$ 171,400	$ 25,200	186,034	$ 66,450
Excess tax benefits from exercise of options and warrants	81,291		218,122
Net cash used in financing activities	(5,772,647)	$ (1,614,311)	(9,767,747)	$ (902,735)
Net (Decrease) Increase in Cash and Cash Equivalents	(18,024)	4,508,255	(193,636)	3,754,513
Cash and Cash Equivalents, Beginning of Period	778,446	1,114,448	954,058	1,868,190
Cash and Cash Equivalents, End of Period	760,422	5,622,703	760,422	5,622,703
Supplemental cash flow information:
Cash paid for interest	220,369	106,642	557,530	319,571
Cash paid for taxes	2,874	1,112,000	2,874	2,325,257
Supplemental Disclosure of Non-cash Investing and Financing Activities:
Cashless exercise of stock options and warrants	$ 433	$ 1,572	$ 2,752	$ 7,168

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation	6 Months Ended
	Jun. 30, 2015
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	Note 1 – Basis of Presentation The accompanying condensed consolidated financial statements have been derived from the accounting records of Enservco Corporation (formerly Aspen Exploration Corporation), Heat Waves Hot Oil Service LLC (“Heat Waves”), Dillco Fluid Service, Inc. (“Dillco”), HE Services LLC, and Real GC, LLC (collectively, the “Company”) as of December 31, 2014 and June 30, 2015 and the results of operations for the three and six months ended June 30, 2015 and 2014. 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. Dillco Fluid Service, Inc. Kansas 100% by Enservco Oil and natural gas field fluid logistic services. HE Services LLC Nevada 100% by Heat Waves No active business operations. Owns construction equipment used by Heat Waves. Real GC, LLC Colorado 100% by Heat Waves No active business operations. Owns real property in Garden City, Kansas that is utilized 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-Q and Article 8 of Regulation S-X. Accordingly, they do not include all of the disclosures required by generally accepted accounting principles in the United States for complete financial statements. In the opinion of management, all of the normal and recurring adjustments necessary to fairly present the interim financial information set forth herein have been included. The results of operations for interim periods are not necessarily indicative of the operating results of a full year or of future years. 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-K of Enservco Corporation for the year ended December 31, 2014. All significant inter-company balances and transactions have been eliminated in the accompanying consolidated financial statements. The accompanying Condensed Consolidated Balance Sheet at December 31, 2014 has been derived from the audited financial statements at that date, but does not include all of the information and notes required by GAAP for complete financial statements. For further information, refer to the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.

Note 2 - Summary of Significant

Note 2 - Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
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 months or less to be cash equivalents. The Company monitors its positions with, and the credit quality of, the financial institutions with which it invests. Accounts Receivable Accounts receivable are stated at the amounts billed to customers. The Company provides a reserve for doubtful accounts based on a review of outstanding receivables, historical collection information and existing economic conditions. The provision 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 June 30, 2015 and December 31, 2014, the Company had an allowance for doubtful accounts of $79,400 and $100,000, respectively. For the three and six months ended June 30, 2015, the Company recorded bad debt expense (net of recoveries) of $8,620 and $12,845, respectively. For the three and six months ended June 30, 2014, the Company recorded bad debt expense (net of recoveries) of $40,000 and $50,000, respectively. Inventory Inventory consists primarily of propane, diesel fuel and chemicals used in the servicing of oil wells, and is carried at the lower of cost or market in accordance with the first in, first out method. The Company periodically reviews the value of items in inventory and provides write-downs or write-offs of inventory based on its assessment of market conditions. Write-downs and write-offs are charged to cost of goods sold. 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 be recovered. The Company looks primarily to the undiscounted future cash flows in its assessment of whether or not long-lived assets have been impaired. No impairments were recorded during the three and six month periods ended June 30, 2015 and 2014. Property and Equipment Property and equipment consists of (1) trucks, trailers and pickups; (2) trucks that are in various stages of fabrication; (3) real property which includes land and buildings used for office and shop facilities and wells used for the disposal of water; and (4) other equipment such as tools used for maintaining and repairing vehicles, office furniture and fixtures, and computer equipment. Property and equipment is stated at cost less accumulated depreciation. The Company charges repairs and maintenance against income when incurred and capitalizes renewals and betterments that extend the remaining useful life or expands the capacity or efficiency of the assets. Depreciation is recorded on a straight-line basis over estimated useful lives of 5 to 30 years. Leases 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 made on a straight-line basis, in accordance with the terms of the agreement, the Company records a deferred rent expense and recognizes the rental expense on a straight-line basis throughout the lease term. The majority of the Company’s facility leases contain renewal clauses and expire through January 2021. In most cases, management expects that in the normal course of business, leases will be renewed or replaced by other leases. 7 The Company is leasing a number of trucks and equipment in the normal course of business, which are recorded as operating leases. The Company records rental expense on its equipment operating leases over the lease term as it becomes payable; there are no rent escalation terms associated with these equipment leases. On a number of the equipment leases, purchase options exist allowing the Company to purchase the leased equipment at the end of the lease term, based on the market price of the equipment at the time of the lease termination and exercised purchase option. The majority of the Company’s equipment leases contain renewal clauses and expire through February 2017. The Company has also in the past entered into several capital leases in order to acquire trucks and equipment. Each of these leases allows the Company to retain title of the equipment leased through the lease agreements upon final payment of all principal and interest due. The Company records the assets and liabilities associated with these leases at the present value of the minimum lease payments per the lease agreement. The assets are classified as property and equipment and the liabilities are classified as current and long-term liabilities based on the contractual terms of the agreements and their associated maturities. There are no outstanding capital leases as of June 30, 2015. Revenue Recognition The Company recognizes revenue when evidence of an arrangement exists, the fee is fixed or determinable, services are provided, and collection is reasonably assured. Earnings Per Share Earnings per share is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted earnings per share is calculated by dividing net income 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 be issued for outstanding stock options. As of June 30, 2015 and 2014, there were outstanding stock options and warrants to acquire an aggregate of 3,669,169 and 3,917,063 shares of Company common stock , respectively, which have a potentially dilutive impact on earnings per share. For the six months ended June 30, 2015 and 2014, the incremental shares of the options and warrants to be included in the calculation of diluted earnings per share had a dilutive impact on the Company’s earnings per share of 1,883,281 and 2,466,052 shares, respectively. Dilution is not permitted if there are net losses during the period. As such, the Company does not show dilutive earnings per share for the three months ended June 30, 2015 and 2014. Intangible Assets Goodwill Impairment. 8 Loan Fees and Other Deferred Costs In the normal course of business, the Company enters into loan agreements and amendments thereto with its primary lending institutions. The majority of these lending agreements and amendments require origination fees and other fees in the course of executing the agreements. For all costs associated with the execution of the lending agreements, the Company recognizes these as capitalized costs and amortizes these costs over the term of the loan agreement using the effective interest method. These deferred costs are classified on the balance sheet as current or long-term assets based on the contractual terms of the loan agreements. All other costs not associated with the execution of the loan agreements are expensed as incurred. 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 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. Deferred income taxes are classified as a net current or non-current asset or liability based on the classification of the related asset or liability for financial reporting purposes. A deferred tax asset or liability that is not related to an asset or liability for financial reporting is classified according to the expected reversal date. The Company records a valuation allowance to reduce deferred tax assets to an amount that it believes is more likely than not to be realized. The Company accounts for any uncertainty in income taxes by recognizing the tax benefit from an uncertain tax position only if, in the Company’s opinion, it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The Company measures the tax benefits recognized in the financial statements from such a position based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate resolution. The application of income tax law is inherently complex. Laws and regulations in this area are voluminous and are often ambiguous. As such, the Company is required to make many subjective assumptions and judgments regarding income tax exposures. Interpretations of and guidance surrounding income tax law and regulations change over time and may result in changes to the Company’s subjective assumptions and judgments which can materially affect amounts recognized in the consolidated balance sheets and consolidated statements of income. The result of the reassessment of the Company’s tax positions did not have an impact on the consolidated financial statements. Interest and penalties associated with tax positions are recorded in the period assessed as general and administrative expenses. During the six months ended June 30, 2015, penalties and interest of $1,300 were included in income tax expense. The Company files tax returns in the United States and in the states in which it conducts its business operations. The tax years 2011 through 2014 remain open to examination in the taxing jurisdictions to which the Company is subject. 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. The Company did not change its valuation techniques nor were there any transfers between hierarchy levels during the six months ended June 30, 2015. The financial and nonfinancial assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurement. 9 The hierarchy is broken down into three levels based on the reliability of the inputs as follows: 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 The Company uses the Black-Scholes pricing model as a method for determining the estimated fair value for all stock options awarded to employees, officers, and directors. The expected term of the options is based upon evaluation of historical and expected further 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 as we have not paid dividends nor do we anticipate paying any dividends in the foreseeable future. The Company also uses the Black-Scholes valuation model to determine the fair value of warrants. Expected volatility is based upon the weighted average of historical volatility over the contractual term of the warrant and implied volatility. The risk-free interest rate is based upon implied yield on a U.S. Treasury zero-coupon issue with a remaining term equal to the contractual term of the warrants. The dividend yield is assumed to be none. Management Estimates The preparation of the Company’s 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, stock based compensation expense, income tax provision, and the valuation of deferred taxes. Actual results could differ from those estimates. Reclassifications Certain reclassifications have been made to the prior period financial statements to conform to the current period presentation. The Company reclassified $95,966 and $226,420 of site personnel costs from general and administrative expenses to cost of revenues on the consolidated statement of operations and comprehensive (loss) income for the three and six months ended June 30, 2014, respectively to conform to 2015 presentation. The Company reclassified $44,271 and $116,421 of patent defense costs from general and administrative expenses to patent litigation and defense costs on the consolidated statement of operations and comprehensive income for the three and six months ended June 30, 2014, respectively to conform to 2015 presentation. Accounting Pronouncements Recently Issued In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers , which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard becomes effective for us on January 1, 2018. Early adoption is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. Recent tentative decisions by the FASB may delay the effective date of this ASU and some of its other provisions. We are evaluating the effect that ASU 2014-09 will have on our consolidated financial statements and related disclosures. We have not yet selected a transition method nor have we determined the effect of the standard on our ongoing financial reporting. 10 In January 2015, the FASB issued ASU 2015-01, “Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items.” ASU 2015-01 eliminates from U.S. GAAP the concept of an extraordinary item. The Board released the new guidance as part of its simplification initiative, which is intended to “identify, evaluate, and improve areas of U.S. GAAP for which cost and complexity can be reduced while maintaining or improving the usefulness of the information provided to users of financial statements.” The ASU is effective for annual periods beginning after December 15, 2015, and interim periods within those annual periods. The adoption of this guidance is not expected to impact the Company’s consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, “Simplifying the Presentation of Debt Issuance Costs.” ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The ASU is effective for annual periods beginning after December 15, 2015, and interim periods within those annual periods. The simplification of the presentation of debt issuance costs is expected to have an immaterial impact on the Company’s total assets and debt. In July 2015, The adoption of this guidance is not expected to impact the Company’s consolidated financial statements.

Note 3 - Property and Equipment

Note 3 - Property and Equipment	6 Months Ended
	Jun. 30, 2015
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	Note 3 - Property and Equipment Property and equipment consists of the following: June 30, December 31, 2015 2014 Trucks and vehicles $ 52,563,392 $ 48,020,268 Other equipment 3,141,480 3,135,916 Buildings and improvements 3,679,639 3,396,280 Trucks in process 519,993 2,366,758 Land 873,428 776,420 Disposal wells 383,785 367,330 Total property and equipment 61,161,717 58,062,972 Accumulated depreciation (22,996,454 ) (20,273,968 ) Property and equipment - net $ 38,165,263 $ 37,789,004 Depreciation expense on property and equipment for the three months ended June 30, 2015 and 2014 totaled $1,439,838 and $726,424, respectively. Depreciation expense for the six months ended June 30, 2015 and 2014 totaled $2,762,772 and $1,403,888, respectively

Note 4 - PNC Credit Facility

Note 4 - PNC Credit Facility	6 Months Ended
	Jun. 30, 2015
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 4 – PNC Credit Facility 2014 PNC Credit Facility In September 2014, the Company entered into an Amended and Restated Revolving Credit and Security Agreement (the "2014 Credit Agreement") with PNC Bank, National Association ("PNC") which provides for a five-year $30 million senior secured revolving credit facility which replaced a prior revolving credit facility and term loan with PNC that totaled $16 million (the "2012 Credit Agreement"). The 2014 Credit Agreement allows the Company to borrow up to 85% of eligible receivables and 85% of the appraised value of trucks and equipment. The commitment amount may be increased to $40 million, subject to certain conditions and approvals set forth in the 2014 Credit Agreement. In December 2014, the Company exercised the option to increase the commitment amount to $40 million. Under the 2014 Credit Agreement, there are no required principal payments until maturity in September 2019 and the Company has the option to pay variable interest rate based on (i) 1, 2 or 3 month LIBOR plus an applicable margin ranging from 2.50% to 3.50% for LIBOR Rate Loans or (ii) interest at PNC Base Rate plus an applicable margin of 1.00% to 2.00% for Domestic Rate Loans. Interest is calculated monthly and added to the principal balance of the loan. Additionally, the Company incurs an unused credit line fee of 0.375%. The revolving credit facility is collateralized by substantially all of the Company’s assets and subject to financial covenants. The interest rate at June 30, 2015 was 2.69% for the $17,000,000 of outstanding LIBOR Rate Loans and 4.25% for the $1,552,894 of outstanding Domestic Rate Loans. Effective February 27, 2015, the Company entered into a Consent and First Amendment (the “Consent and Amendment”) with respect to the 2014 Credit Agreement. The Consent and Amendment, among other things, (i) modified certain financial covenants, and (ii) consented to a $100,000 principal prepayment by the Company to a third party bank that eliminated a monthly fee of $12,500 paid to the guarantor of that indebtedness. Effective March 29, 2015, the Company entered into a second amendment to the 2014 Credit Agreement with PNC to increase the Company’s leverage ratio, as defined from 2.75 to 1 to 3.50 to 1 and to exclude certain capital expenditures from the calculation of the fixed charge ratio. As of June 30, 2015 and December 31, 2014, the Company had an outstanding loan balance of $18,552,894 and $28,634,037, respectively. The outstanding loan balance matures in September 2019. As of June 30, 2015, approximately $13,100,000 was available under the revolving credit facility.

Note 5 - Long-Term Debt

Note 5 - Long-Term Debt	6 Months Ended
	Jun. 30, 2015
Notes to Financial Statements
Long-term Debt [Text Block]	Note 5 – Long-Term Debt Long-term debt consists of the following: June 30, December 31, 2015 2014 Real Estate Loan for our facility in North Dakota, interest at 3.75%, monthly principal and interest payment of $5,255 ending October 3, 2028. Collateralized by land and property purchased with the loan. $ 557,111 $ 677,204 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 monthly installments of $3,000 per agreement with the IRS. 224,000 242,000 Mortgage payable to a bank, interest at 5.9%, monthly principal and interest payments of $1,550 through January 2017 with a balloon payment of $88,118 on February 1, 2017; secured by land. 109,335 115,317 Mortgage payable to a bank; interest at 7.25%, due in monthly principal and interest payments of $4,555 through February 2017, secured by land. 84,182 107,967 Total 974,628 1,142,488 Less current portion (329,219 ) (340,520 ) Long-term debt, net of current portion $ 645,409 $ 801,968 Aggregate maturities of debt, excluding the 2014 Credit Agreement described in Note 4, are as follows: Twelve Months Ending June 30, 2016 $ 329,219 2017 175,106 2018 45,967 2019 47,746 2020 49,557 Thereafter 327,033 Total $ 974,628

Note 6 - Income Taxes

Note 6 - Income Taxes	6 Months Ended
	Jun. 30, 2015
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 6 – 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 six months ended June 30, 2015 and 2014 differs from the amount that would be provided by applying the statutory U.S. federal income tax rate of 34% to pre-tax income primarily because of state income taxes and estimated permanent differences. The computation of the annual estimated effective tax rate at each interim period requires certain estimates and significant judgment including, but not limited to, the expected operating income for the year, projections of the proportion of income earned and taxed in various jurisdictions, permanent and temporary differences, and the likelihood of recovering deferred tax assets generated in the current year. The accounting estimates used to compute the provision for income taxes may change as new events occur, more experience is obtained, additional information becomes known or as the tax environment changes.

Note 7 - Commitments and Contin

Note 7 - Commitments and Contingencies	6 Months Ended
	Jun. 30, 2015
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 7 – Commitments and Contingencies Operating Leases As of June 30, 2015, the Company leases facilities and certain trucks and equipment under lease commitments that expire through January 2021. Future minimum lease commitments for these operating lease commitments are as follows: Twelve Months Ending June 30, 2016 $ 714,231 2017 467,526 2018 199,000 2019 189,000 2020 192,000 Thereafter 56,000 Total $ 1,817,757 Equipment Purchase Commitments As of June 30, 2015, the Company did not have any outstanding purchase commitments related to the purchase of equipment and construction of building facilities. Self-Insurance In June 2015, The Company became self-insured under its Employee Group Medical Plan for the first $75,000 per individual participant. The Company has accrued a liability of approximately $42,000 as of June 30, 2015 for insurance claims that it anticipates paying in the future related to incidents that occurred during the period ended June 30, 2015. Litigation On October 10, 2014, the Company received service of a complaint filed in the United States District Court for the Northern District of Texas, Dallas Division (Civil Action No. 3:14-cv-03631) by Heat-On-The-Fly, LLC (“HOTF”) naming Enservco Corporation (“Enservco”) and its subsidiary Heat Waves Hot Oil Service LLC (“Heat Waves”) as defendants. The complaint alleges that Enservco and Heat Waves, in offering and selling frac water heating services, infringed and induced others to infringe two patents owned by HOTF (U.S. Patent Nos. 8,171,993 (“the ‘993 Patent”) and 8,739,875 (“the ‘875 Patent”)). The complaint seeks various remedies including injunctive relief and unspecified damages and relates to only a portion of Heat Waves’ frac water heating services. Heat Waves filed a motion to transfer the case to Colorado and Enservco filed a motion to dismiss the case against it based on a lack of personal jurisdiction. On April 28, 2015, the Court in the Northern District of Texas found that it did not have personal jurisdiction over Enservco in Texas. The Court also granted Heat Wave’s motion and ordered that the case, which still includes Enservco as a co-defendant, be transferred to the District of Colorado. On May 8, 2015, the case was transferred to the U.S. District Court for the District of Colorado, Civil Action No. 1:15-cv-00983-RBJ (“Colorado Case”). The same complaint from Texas has been entered in the Colorado Case. Heat Waves has answered the complaint, denied HOTF’s allegations of infringement and asserted counterclaims asking the Court to find, among other things, that it does not infringe either patent and that both patents are invalid. HOTF has replied to and denied those counterclaims. O n July 17, 2015, the Company and HOTF jointly asked the U.S. District Court for the District of Colorado to stay the case pending appeal by HOTF of the partial summary judgment ruling invalidating the ‘993 Patent referenced below. On July 20, 2015, the Court granted the parties’ joint request and stayed the case pending resolution of appeal by HOTF and the pending ‘993 Patent reexamination proceeding referenced below. 13 Enservco and Heat Waves deny that they are infringing any valid, enforceable claims of the asserted patents and intend to vigorously defend themselves in the Colorado Case, if necessary. Heat Waves offered on demand water heating services to the industry well before these patents were even filed. Heat Waves is aware that HOTF has been involved in litigation dating back to January of 2013 with a group of energy companies that are seeking to, among other things, invalidate the ‘993 Patent (“North Dakota Case”). In January 2014, several of the energy companies filed a partial summary judgment motion to invalidate the ‘993 Patent. On March 31, 2015, the Court granted their summary judgment motion and found that the ‘993 Patent was invalid. Thereafter, the North Dakota Court entered a judgment on this issue in favor of these companies. In response, HOTF filed an appeal with the United States Court of Appeals for the Federal Circuit contesting this judgment as well as earlier orders entered by the Court. Once the North Dakota Court confirmed the appeal was premature, the parties jointly requested that the appeal be dismissed. On July 20, 2015, the appeal was dismissed based on the parties’ joint request. HOTF has indicated in the Colorado Case that it intends to appeal these same issues once the North Dakota Case goes to trial and the judgment regarding invalidity of the ‘993 Patent is made final. The Company is also aware of another lawsuit in Texas in which a third party claimed that the ‘993 Patent was invalid. In light of the appeal, HOTF and the other parties in that action jointly asked the Texas Court to stay the case pending resolution of the appeal. On April 20, 2015, the Court granted their request and stayed the case. It is unclear how this case will proceed now that the appeal has been dismissed. Although the first 12 claims of the ‘993 Patent survived a prior reexamination, the United States Patent and Trademark Office (“USPTO”) granted a second request on July 1, 2014, to reexamine the ‘993 Patent in its entirety (all 99 claims, including the prior 12 claims that survived the prior, limited reexamination) based on different reasoning. On February 11, 2015, the USPTO issued initial findings in the second reexamination proceeding that rejected all 99 claims of the ‘993 Patent as being unpatentable. HOTF filed a lengthy response with the USPTO on April 13, 2015 seeking to overcome these pending rejections, but no subsequent decision has been made by the USPTO. The timing of a response from the USPTO and any decision resulting therefrom is uncertain and is subject to appeal by HOTF. Further, HOTF has at least two additional pending patent applications based on the ‘993 and ‘875 Patents, which, if granted, could be asserted against the Company. As the ‘993 Patent and the ‘875 Patent are based on the same subject matter, management believes that a final finding of invalidity of the ‘993 Patent could serve as a basis to affect the validity of the ‘875 Patent. If the Patents are ultimately held to be invalid, the Colorado Case would become moot. As noted above, the Texas case against Enservco and Heat Waves was transferred to the U.S. District Court for the District of Colorado. On July 17, 2015, the Company and HOTF jointly asked the U.S. District Court for the District of Colorado to stay the case pending resolution of the North Dakota Court’s judgment invalidating the ‘993 Patent. On July 20, 2015, the Court granted the request and stayed the Colorado Case. To the extent that Enservco and Heat Waves are unsuccessful in their defense, they could be liable for damages (which may be significant) and Heat Waves could possibly be enjoined from using any technology that is determined to be infringing. Either result could negatively impact the Company’s business and operations. At this time, the Company is unable to predict the outcome of this case, and accordingly has not recorded an accrual for any potential loss.

Note 8 - Stockholders Equity

Note 8 - Stockholders Equity	6 Months Ended
	Jun. 30, 2015
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	Note 8 – Stockholders Equity Warrants In conjunction with a private placement and subordinated debt conversion in November 2012, the Company granted a one-half share warrant for every full share of common stock acquired by the equity investors or converted by Mr. Herman. As such, the Company granted warrants to purchase 4,960,714 shares of the Company’s common stock, exercisable at $0.55 per share for a five year term. Each of the warrants may be exercised on a cashless basis. The warrants also provide that subject to various conditions, the holders have piggy-back registration rights with respect to the shares of common stock that may be acquired upon the exercise of the warrants. In November 2012, the Company granted each of the principals of an existing investor relations firm warrants to acquire 112,500 shares of the Company’s common stock (a total of 225,000 shares) for the firm’s assistance in creating awareness for the Company’s private placement. The warrants are exercisable at $0.55 per share and expire 5 years from date of grant. A summary of warrant activity for the six months ended June 30, 2015 is as follows: Weighted Weighted Average Average Remaining Aggregate Exercise Contractual Intrinsic Warrants Shares Price Life (Years) Value Outstanding at December 31, 2014 250,001 $ 0.64 2.29 $ 242,901 Issued for Services - - Exercised (100,000 ) 0.77 Forfeited/Cancelled - Outstanding at June 30, 2015 150,001 $ 0.55 2.67 $ 180,001 Exercisable at June 30, 2015 150,001 $ 0.55 2.67 $ 180,001 During the six months ended June 30, 2015, warrants to acquire 100,000 shares were exercised for cash payments totaling $77,100. The warrants exercised had a total intrinsic value of $102,000 at the time of exercise. No warrants were issued during the six months ended June 30, 2015. During the six months ended June 30, 2014, warrants to acquire 1,864,356 shares of common stock were exercised by way of cashless exercise whereby the warrant holders elected to receive 1,431,080 shares without payment of the exercise price and the remaining warrants for 433,276 shares were cancelled. In addition, warrants to acquire 341,462 shares were exercised for cash payments totaling $187,804. The warrants exercised had a total intrinsic value of $3,952,805 at the time of exercise. No warrants were issued during the six months ended June 30, 2014.

Note 9 - Stock Options

Note 9 - Stock Options	6 Months Ended
	Jun. 30, 2015
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	Note 9 – Stock Options Stock Option Plans On July 27, 2010 the Company’s Board of Directors adopted the 2010 Stock Incentive Plan (the “2010 Plan”). The aggregate number of shares of common stock that may granted under the 2010 Plan is reset at the beginning of each year based on 15% of the number of shares of common stock then outstanding. As such, on January 1, 2015 the number of shares of common stock available under the 2010 Plan was reset to 5,558,432 shares based upon 37,056,215 shares outstanding on that date. Options are typically granted with an exercise price equal to the estimated fair value of the Company's common stock at the date of grant with a vesting schedule of one to three years and a contractual term of 5 years. As of June 30, 2015, there were 3,519,168 options outstanding under the 2010 Plan. 15 A summary of the range of assumptions used to value stock options granted for the three months ended June 30, 2015 and 2014 are as follows: For the T hree M onths E nded For the Six M onths Ended June 30, June 30, 2015 2014 2015 2014 Expected volatility 107 % - 107 % 124% Risk-free interest rate 0.86 % - 0.84 % 0.72% Dividend yield - - - - Expected term (in years) 3.5 - 3.5 3.5 During the six months ended June 30, 2015, the Company granted options to acquire 1,123,500 shares of common stock with a weighted-average grant-date fair value of $1.19 per share. During the six months ended June 30, 2015, options to acquire 720,333 shares of common stock were exercised by way of a cashless exercise whereby the option holders elected to receive 550,276 shares of common stock without payment of the exercise price and the remaining options for 170,057 shares were cancelled. The options had an intrinsic value of $1,131,371 at the time of exercise. In addition, options to acquire 379,667 shares of common stock were exercised for cash payments of $186,034. The options had an intrinsic value of $407,587 at the time of exercise. During the six months ended June 30, 2014, the Company granted options to acquire 232,500 shares of common stock with a weighted-average grant-date fair value of $1.71 per share. During the six months ended June 30, 2014, options to acquire 3,333 shares of common stock were exercised by way of a cashless exercise whereby the option holder elected to receive 2,377 shares of common stock without payment of the exercise price and the remaining options for 956 shares were cancelled. The options had an intrinsic value of $5,399 at the time of exercise. In addition, options to acquire 130,000 shares of common stock were exercised for cash payments of $66,450. The options had an intrinsic value of $190,450 at the time of exercise. The following is a summary of stock option activity for all equity plans for the six months ended June 30, 2015: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at December 31 , 2014 3,500,168 $ 0.90 2.02 $ 2,785,893 Granted 1,123,500 1.75 Exercised (1,100,000 ) 0.48 Forfeited or Expired (4,500 ) 2.22 Outstanding at June 30, 2015 3,519,168 $ 1.30 3.01 $ 1,322,085 Vested or Expected to Vest at June 30, 2015 3,519,168 $ 1.30 3.01 $ 1,322,085 Exercisable at June 30, 2015 2,177,999 $ 1.02 2.10 $ 1,279,916 16 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 June 30, 2015, and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had they exercised their options on June 30, 2015. During the six months ended June 30, 2015 and 2014, the Company recognized stock-based compensation costs for stock options of $271,271 and $148,280, respectively in general and administrative expenses. During the three months ended June 30, 2015 and 2014, the Company recognized stock-based compensation for stock options of $180,211 and $71,935, respectively. The Company currently expects all outstanding options to vest. Compensation cost is revised if subsequent information indicates that the actual number of options vested 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, 2014 498,504 $ 1.05 Granted 1,123,500 1.19 Vested (277,835 ) 0.80 Forfeited (3,000 ) 1.70 Non-vested at June 30, 2015 1,341,169 $ 1.22 As of June 30, 2015 there was $1,407,567 of total unrecognized compensation costs related to non-vested shares under the qualified stock option plans which will be recognized over the remaining weighted-average period of 2.2 years.

Note 10 - Related Party Transac

Note 10 - Related Party Transactions	6 Months Ended
	Jun. 30, 2015
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	Note 10 – Related Party Transactions Loan Guaranty: On October 3, 2013, the Company refinanced its real estate loan for its facility in North Dakota. Under the terms of the agreement, $100,000 of the loan was guaranteed by Mike Herman, the Company’s former Chairman and Chief Executive Officer, and the Company had agreed to pay Mr. Herman a fee for so long as he guaranteed Company indebtedness of $12,500 per month ($150,000 annually). The agreement with the lender provided that if the Company made a principal payment equal to or greater than $100,000, the guaranty would be released in full. The Company made that payment in March 2015 and is no longer obligated to pay Mr. Herman the guaranty fee. Sale of Equipment: On February 3, 2014, the Board of Directors approved the sale of two trucks and a trailer to an entity owned 50% by the Company’s former Chairman for $50,000. The equipment had not been in service for over two years and was not economically feasible to repair and return to service. The Company was holding this equipment primarily for salvage purposes. At the time of the sale, the equipment had a net book value of $38,000 which resulted in a gain of $12,000. The Company believes the price paid was at least equal to the fair market value of the units had they been sold through auction or in the open market.

Significant Accounting Policies

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2015
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 months or less to be cash equivalents. The Company monitors its positions with, and the credit quality of, the financial institutions with which it invests.
Trade and Other Accounts Receivable, Policy [Policy Text Block]	Accounts Receivable Accounts receivable are stated at the amounts billed to customers. The Company provides a reserve for doubtful accounts based on a review of outstanding receivables, historical collection information and existing economic conditions. The provision 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 June 30, 2015 and December 31, 2014, the Company had an allowance for doubtful accounts of $79,400 and $100,000, respectively. For the three and six months ended June 30, 2015, the Company recorded bad debt expense (net of recoveries) of $8,620 and $12,845, respectively. For the three and six months ended June 30, 2014, the Company recorded bad debt expense (net of recoveries) of $40,000 and $50,000, respectively.
Inventory, Policy [Policy Text Block]	Inventory Inventory consists primarily of propane, diesel fuel and chemicals used in the servicing of oil wells, and is carried at the lower of cost or market in accordance with the first in, first out method. The Company periodically reviews the value of items in inventory and provides write-downs or write-offs of inventory based on its assessment of market conditions. Write-downs and write-offs are charged to cost of goods sold.
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 be recovered. The Company looks primarily to the undiscounted future cash flows in its assessment of whether or not long-lived assets have been impaired. No impairments were recorded during the three and six month periods ended June 30, 2015 and 2014.
Property, Plant and Equipment, Policy [Policy Text Block]	Property and Equipment Property and equipment consists of (1) trucks, trailers and pickups; (2) trucks that are in various stages of fabrication; (3) real property which includes land and buildings used for office and shop facilities and wells used for the disposal of water; and (4) other equipment such as tools used for maintaining and repairing vehicles, office furniture and fixtures, and computer equipment. Property and equipment is stated at cost less accumulated depreciation. The Company charges repairs and maintenance against income when incurred and capitalizes renewals and betterments that extend the remaining useful life or expands the capacity or efficiency of the assets. Depreciation is recorded on a straight-line basis over estimated useful lives of 5 to 30 years.
Lease, Policy [Policy Text Block]	Leases 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 made on a straight-line basis, in accordance with the terms of the agreement, the Company records a deferred rent expense and recognizes the rental expense on a straight-line basis throughout the lease term. The majority of the Company’s facility leases contain renewal clauses and expire through January 2021. In most cases, management expects that in the normal course of business, leases will be renewed or replaced by other leases. The Company is leasing a number of trucks and equipment in the normal course of business, which are recorded as operating leases. The Company records rental expense on its equipment operating leases over the lease term as it becomes payable; there are no rent escalation terms associated with these equipment leases. On a number of the equipment leases, purchase options exist allowing the Company to purchase the leased equipment at the end of the lease term, based on the market price of the equipment at the time of the lease termination and exercised purchase option. The majority of the Company’s equipment leases contain renewal clauses and expire through February 2017. The Company has also in the past entered into several capital leases in order to acquire trucks and equipment. Each of these leases allows the Company to retain title of the equipment leased through the lease agreements upon final payment of all principal and interest due. The Company records the assets and liabilities associated with these leases at the present value of the minimum lease payments per the lease agreement. The assets are classified as property and equipment and the liabilities are classified as current and long-term liabilities based on the contractual terms of the agreements and their associated maturities. There are no outstanding capital leases as of June 30, 2015.
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition The Company recognizes revenue when evidence of an arrangement exists, the fee is fixed or determinable, services are provided, and collection is reasonably assured.
Earnings Per Share, Policy [Policy Text Block]	Earnings Per Share Earnings per share is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted earnings per share is calculated by dividing net income 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 be issued for outstanding stock options. As of June 30, 2015 and 2014, there were outstanding stock options and warrants to acquire an aggregate of 3,669,169 and 3,917,063 shares of Company common stock , respectively, which have a potentially dilutive impact on earnings per share. For the six months ended June 30, 2015 and 2014, the incremental shares of the options and warrants to be included in the calculation of diluted earnings per share had a dilutive impact on the Company’s earnings per share of 1,883,281 and 2,466,052 shares, respectively. Dilution is not permitted if there are net losses during the period. As such, the Company does not show dilutive earnings per share for the three months ended June 30, 2015 and 2014.
Goodwill and Intangible Assets, Policy [Policy Text Block]	Intangible Assets Goodwill Impairment.
Loan Fees and Other Deferred Costs [Policy Text Block]	Loan Fees and Other Deferred Costs In the normal course of business, the Company enters into loan agreements and amendments thereto with its primary lending institutions. The majority of these lending agreements and amendments require origination fees and other fees in the course of executing the agreements. For all costs associated with the execution of the lending agreements, the Company recognizes these as capitalized costs and amortizes these costs over the term of the loan agreement using the effective interest method. These deferred costs are classified on the balance sheet as current or long-term assets based on the contractual terms of the loan agreements. All other costs not associated with the execution of the loan agreements are expensed as incurred.
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 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. Deferred income taxes are classified as a net current or non-current asset or liability based on the classification of the related asset or liability for financial reporting purposes. A deferred tax asset or liability that is not related to an asset or liability for financial reporting is classified according to the expected reversal date. The Company records a valuation allowance to reduce deferred tax assets to an amount that it believes is more likely than not to be realized. The Company accounts for any uncertainty in income taxes by recognizing the tax benefit from an uncertain tax position only if, in the Company’s opinion, it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The Company measures the tax benefits recognized in the financial statements from such a position based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate resolution. The application of income tax law is inherently complex. Laws and regulations in this area are voluminous and are often ambiguous. As such, the Company is required to make many subjective assumptions and judgments regarding income tax exposures. Interpretations of and guidance surrounding income tax law and regulations change over time and may result in changes to the Company’s subjective assumptions and judgments which can materially affect amounts recognized in the consolidated balance sheets and consolidated statements of income. The result of the reassessment of the Company’s tax positions did not have an impact on the consolidated financial statements. Interest and penalties associated with tax positions are recorded in the period assessed as general and administrative expenses. During the six months ended June 30, 2015, penalties and interest of $1,300 were included in income tax expense. The Company files tax returns in the United States and in the states in which it conducts its business operations. The tax years 2011 through 2014 remain open to examination in the taxing jurisdictions to which the Company is subject.
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. The Company did not change its valuation techniques nor were there any transfers between hierarchy levels during the six months ended June 30, 2015. The financial and nonfinancial assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurement. The hierarchy is broken down into three levels based on the reliability of the inputs as follows: 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 Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock-based Compensation The Company uses the Black-Scholes pricing model as a method for determining the estimated fair value for all stock options awarded to employees, officers, and directors. The expected term of the options is based upon evaluation of historical and expected further 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 as we have not paid dividends nor do we anticipate paying any dividends in the foreseeable future. The Company also uses the Black-Scholes valuation model to determine the fair value of warrants. Expected volatility is based upon the weighted average of historical volatility over the contractual term of the warrant and implied volatility. The risk-free interest rate is based upon implied yield on a U.S. Treasury zero-coupon issue with a remaining term equal to the contractual term of the warrants. The dividend yield is assumed to be none.
Use of Estimates, Policy [Policy Text Block]	Management Estimates The preparation of the Company’s 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, stock based compensation expense, income tax provision, and the valuation of deferred taxes. Actual results could differ from those estimates.
Reclassification, Policy [Policy Text Block]	Reclassifications Certain reclassifications have been made to the prior period financial statements to conform to the current period presentation. The Company reclassified $95,966 and $226,420 of site personnel costs from general and administrative expenses to cost of revenues on the consolidated statement of operations and comprehensive (loss) income for the three and six months ended June 30, 2014, respectively to conform to 2015 presentation. The Company reclassified $44,271 and $116,421 of patent defense costs from general and administrative expenses to patent litigation and defense costs on the consolidated statement of operations and comprehensive income for the three and six months ended June 30, 2014, respectively to conform to 2015 presentation.
New Accounting Pronouncements, Policy [Policy Text Block]	Accounting Pronouncements Recently Issued In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers , which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard becomes effective for us on January 1, 2018. Early adoption is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. Recent tentative decisions by the FASB may delay the effective date of this ASU and some of its other provisions. We are evaluating the effect that ASU 2014-09 will have on our consolidated financial statements and related disclosures. We have not yet selected a transition method nor have we determined the effect of the standard on our ongoing financial reporting. In January 2015, the FASB issued ASU 2015-01, “Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items.” ASU 2015-01 eliminates from U.S. GAAP the concept of an extraordinary item. The Board released the new guidance as part of its simplification initiative, which is intended to “identify, evaluate, and improve areas of U.S. GAAP for which cost and complexity can be reduced while maintaining or improving the usefulness of the information provided to users of financial statements.” The ASU is effective for annual periods beginning after December 15, 2015, and interim periods within those annual periods. The adoption of this guidance is not expected to impact the Company’s consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, “Simplifying the Presentation of Debt Issuance Costs.” ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The ASU is effective for annual periods beginning after December 15, 2015, and interim periods within those annual periods. The simplification of the presentation of debt issuance costs is expected to have an immaterial impact on the Company’s total assets and debt. In July 2015, The adoption of this guidance is not expected to impact the Company’s consolidated financial statements.

Note 3 - Property and Equipme17

Note 3 - Property and Equipment (Tables)	6 Months Ended
	Jun. 30, 2015
Notes Tables
Property, Plant and Equipment [Table Text Block]	June 30, December 31, 2015 2014 Trucks and vehicles $ 52,563,392 $ 48,020,268 Other equipment 3,141,480 3,135,916 Buildings and improvements 3,679,639 3,396,280 Trucks in process 519,993 2,366,758 Land 873,428 776,420 Disposal wells 383,785 367,330 Total property and equipment 61,161,717 58,062,972 Accumulated depreciation (22,996,454 ) (20,273,968 ) Property and equipment - net $ 38,165,263 $ 37,789,004

Note 5 - Long-Term Debt (Tables

Note 5 - Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2015
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	June 30, December 31, 2015 2014 Real Estate Loan for our facility in North Dakota, interest at 3.75%, monthly principal and interest payment of $5,255 ending October 3, 2028. Collateralized by land and property purchased with the loan. $ 557,111 $ 677,204 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 monthly installments of $3,000 per agreement with the IRS. 224,000 242,000 Mortgage payable to a bank, interest at 5.9%, monthly principal and interest payments of $1,550 through January 2017 with a balloon payment of $88,118 on February 1, 2017; secured by land. 109,335 115,317 Mortgage payable to a bank; interest at 7.25%, due in monthly principal and interest payments of $4,555 through February 2017, secured by land. 84,182 107,967 Total 974,628 1,142,488 Less current portion (329,219 ) (340,520 ) Long-term debt, net of current portion $ 645,409 $ 801,968
Schedule of Maturities of Long-term Debt [Table Text Block]	Twelve Months Ending June 30, 2016 $ 329,219 2017 175,106 2018 45,967 2019 47,746 2020 49,557 Thereafter 327,033 Total $ 974,628

Note 7 - Commitments and Cont19

Note 7 - Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2015
Notes Tables
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	Twelve Months Ending June 30, 2016 $ 714,231 2017 467,526 2018 199,000 2019 189,000 2020 192,000 Thereafter 56,000 Total $ 1,817,757

Note 8 - Stockholders Equity (T

Note 8 - Stockholders Equity (Tables)	6 Months Ended
	Jun. 30, 2015
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, 2014 250,001 $ 0.64 2.29 $ 242,901 Issued for Services - - Exercised (100,000 ) 0.77 Forfeited/Cancelled - Outstanding at June 30, 2015 150,001 $ 0.55 2.67 $ 180,001 Exercisable at June 30, 2015 150,001 $ 0.55 2.67 $ 180,001

Note 9 - Stock Options (Tables)

Note 9 - Stock Options (Tables)	6 Months Ended
	Jun. 30, 2015
Notes Tables
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	For the T hree M onths E nded For the Six M onths Ended June 30, June 30, 2015 2014 2015 2014 Expected volatility 107 % - 107 % 124% Risk-free interest rate 0.86 % - 0.84 % 0.72% Dividend yield - - - - Expected term (in years) 3.5 - 3.5 3.5
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at December 31 , 2014 3,500,168 $ 0.90 2.02 $ 2,785,893 Granted 1,123,500 1.75 Exercised (1,100,000 ) 0.48 Forfeited or Expired (4,500 ) 2.22 Outstanding at June 30, 2015 3,519,168 $ 1.30 3.01 $ 1,322,085 Vested or Expected to Vest at June 30, 2015 3,519,168 $ 1.30 3.01 $ 1,322,085 Exercisable at June 30, 2015 2,177,999 $ 1.02 2.10 $ 1,279,916
Schedule of Nonvested Share Activity [Table Text Block]	Number of Shares Weighted-Average Grant-Date Fair Value Non-vested at December 31, 2014 498,504 $ 1.05 Granted 1,123,500 1.19 Vested (277,835 ) 0.80 Forfeited (3,000 ) 1.70 Non-vested at June 30, 2015 1,341,169 $ 1.22

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation (Details Textual)	6 Months Ended
	Jun. 30, 2015
Heat Waves Hot Oil Service LLC at Colorado [Member] | Enservco [Member]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	100.00%
Dillco Fluid Service Inc at Kansas [Member] | Enservco [Member]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	100.00%
HE Services LLC at Nevada [Member] | Heat Waves Hot Oil Service LLC at Colorado [Member]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	100.00%
Real GC LLC at Colorado [Member] | Heat Waves Hot Oil Service LLC at Colorado [Member]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	100.00%

Note 2 - Summary of Significa23

Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Earliest Tax Year [Member]
Open Tax Year			2,011
Latest Tax Year [Member]
Open Tax Year			2,014
Minimum [Member]
Property, Plant and Equipment, Useful Life			5 years
Maximum [Member]
Property, Plant and Equipment, Useful Life			30 years
Site Personnel Costs [Member]
Prior Period Reclassification Adjustment	$ 95,966		$ 226,420
Patent Defense Costs [Member]
Prior Period Reclassification Adjustment	44,271		116,421
Asset Impairment Charges	0	$ 0	0	$ 0
Capital Lease Obligations	0		0
Allowance for Doubtful Accounts Receivable, Current	79,400		79,400		$ 100,000
Provision for Doubtful Accounts	$ 8,620	$ 40,000	$ 12,845	$ 50,000
Number of Outstanding Stock Based Option Awards and Warrants	3,669,169	3,917,063	3,669,169	3,917,063
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants			1,883,281	2,466,052
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 1,300		$ 1,300

Note 3 - Property and Equipme24

Note 3 - Property and Equipment (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Depreciation	$ 1,439,838	$ 726,424	$ 2,762,772	$ 1,403,888

Note 3 - Summary of Property an

Note 3 - Summary of Property and Equipment (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Vehicles [Member]
Property and Equipment - Gross	$ 52,563,392	$ 48,020,268
Property, Plant and Equipment, Other Types [Member]
Property and Equipment - Gross	3,141,480	3,135,916
Building and Building Improvements [Member]
Property and Equipment - Gross	3,679,639	3,396,280
Trucks in Process [Member]
Property and Equipment - Gross	519,993	2,366,758
Land [Member]
Property and Equipment - Gross	873,428	776,420
Disposal Wells [Member]
Property and Equipment - Gross	383,785	367,330
Property and Equipment - Gross	61,161,717	58,062,972
Accumulated depreciation	(22,996,454)	(20,273,968)
Property and equipment - net	$ 38,165,263	$ 37,789,004

Note 4 - PNC Credit Facility (D

Note 4 - PNC Credit Facility (Details Textual)	Feb. 27, 2015USD ($)	Oct. 03, 2013USD ($)	Jun. 30, 2015USD ($)	Mar. 28, 2015	Sep. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Revolving Credit Facility [Member] | Two Thousand Fourteen Credit Agreement [Member]
Debt Instrument, Term					5 years
Line of Credit Facility, Maximum Borrowing Capacity					$ 30,000,000
Line of Credit Facility Limitation on Borrowings Percentage of Eligible Receivables					85.00%
Line of Credit Facility Limitation on Borrowings Percentage of Appraised Value of Trucks and Equipment					85.00%
Line of Credit Facility, Remaining Borrowing Capacity			$ 13,100,000
Two Thousand Fourteen Credit Agreement [Member] | Subject To Certain Conditions And Approvals [Member]
Line of Credit Facility, Maximum Borrowing Capacity					$ 40,000,000
Two Thousand Fourteen Credit Agreement [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate					2.50%
Two Thousand Fourteen Credit Agreement [Member] | Minimum [Member] | Base Rate [Member] | Domestic Rate Loans [Member]
Debt Instrument, Basis Spread on Variable Rate					1.00%
Two Thousand Fourteen Credit Agreement [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate					3.50%
Two Thousand Fourteen Credit Agreement [Member] | Maximum [Member] | Base Rate [Member] | Domestic Rate Loans [Member]
Debt Instrument, Basis Spread on Variable Rate					2.00%
Two Thousand Fourteen Credit Agreement [Member] | Domestic Rate Loans [Member]
Debt Instrument, Interest Rate, Effective Percentage			4.25%
Long-term Debt			$ 1,552,894
Two Thousand Fourteen Credit Agreement [Member] | LIBOR Based Loans [Member]
Debt Instrument, Interest Rate, Effective Percentage			2.69%
Long-term Debt			$ 17,000,000
Two Thousand Fourteen Credit Agreement [Member]
Line of Credit Facility, Maximum Borrowing Capacity						$ 40,000,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage					0.375%
Long-term Debt			$ 18,552,894			28,634,037
Leverage Ratio			3.5	2.75
Two Thousand Twelve Credit Agreement [Member]
Line of Credit Facility, Maximum Borrowing Capacity					$ 16,000,000
Guaranteed Loan [Member] | Chief Executive Officer [Member]
Debt Instrument Monthly Payment	$ 12,500	$ 12,500
Guaranteed Loan [Member]
Principal Prepayment Eliminate Monthly Fee	$ 100,000
Long-term Debt			$ 974,628			$ 1,142,488

Note 5 - Summary of Long-Term D

Note 5 - Summary of Long-Term Debt Instruments (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Real Estate Loan 1 [Member]
Long -term debt	$ 557,111	$ 677,204
Note Payable To Seller Of Heat Waves [Member]
Long -term debt	224,000	242,000
Mortgage Payable Through February 2017 [Member]
Long -term debt	109,335	115,317
Mortgage Payable Through February 2017 Without Balloon Payment [Member]
Long -term debt	84,182	107,967
Long -term debt	974,628	1,142,488
Less current portion	(329,219)	(340,520)
Long-term debt, net of current portion	$ 645,409	$ 801,968

Note 5 - Summary of Long-Term28

Note 5 - Summary of Long-Term Debt Instruments (Details) (Parentheticals) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Real Estate Loan 1 [Member]
Debt Instrument, Periodic Payment	$ 5,255	$ 5,255
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.75%	3.75%
Debt Instrument, Maturity Date	Oct. 3, 2028	Oct. 3, 2028
Note Payable To Seller Of Heat Waves [Member]
Debt Instrument, Periodic Payment	$ 3,000	$ 3,000
Mortgage Payable Through February 2017 [Member]
Debt Instrument, Periodic Payment	$ 1,550	$ 1,550
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	5.90%	5.90%
Debt Instrument, Maturity Date	Feb. 1, 2017	Feb. 1, 2017
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid	$ 88,118	$ 88,118
Mortgage Payable Through February 2017 Without Balloon Payment [Member]
Debt Instrument, Periodic Payment	$ 4,555	$ 4,555
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	7.25%	7.25%

Note 5 - Summary of Maturities

Note 5 - Summary of Maturities of Long-Term Debt (Details) - USD ($)	Jun. 30, 2015
2,016	$ 329,219
2,017	175,106
2,018	45,967
2,019	47,746
2,020	49,557
Thereafter	327,033
Total	$ 974,628

Note 6 - Income Taxes (Details

Note 6 - Income Taxes (Details Textual)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	34.00%	34.00%

Note 7 - Commitments and Cont31

Note 7 - Commitments and Contingencies (Details Textual)	Feb. 11, 2015	Jun. 30, 2014USD ($)	Jun. 30, 2014	Jun. 30, 2015USD ($)	Dec. 31, 2014
Capital Addition Purchase Commitments [Member]
Unrecorded Unconditional Purchase Obligation				$ 0
Patent 993 [Member] | Prior Reexamination [Member]
Loss Contingency, Claims Settled, Number			12
Patent 993 [Member] | Reexamination [Member] | Subsequent Event [Member]
Loss Contingency, Claims Dismissed, Number	99
Patent 993 [Member] | Reexamination [Member]
Loss Contingency, Pending Claims, Number					99
Patent 993 And Patent 875 [Member] | Unasserted Claim [Member]
Loss Contingency, Pending Claims, Number				2
Self-insured Amount per Individual Claim		$ 75,000
Self Insurance Reserve				$ 42,000

Note 7 - Summary of Future Mini

Note 7 - Summary of Future Minimum Operating Lease Commitments (Details)	Jun. 30, 2015USD ($)
2,016	$ 714,231
2,017	467,526
2,018	199,000
2,019	189,000
2,020	192,000
Thereafter	56,000
Total	$ 1,817,757

Note 8 - Stockholders Equity (D

Note 8 - Stockholders Equity (Details Textual) - USD ($)	Nov. 30, 2012	Jun. 30, 2015	Jun. 30, 2014
Mr Herman [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	4,960,714
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.55
Warrants Expiration Period	5 years
Each Principal Of Existing Investor Relations Firm [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	112,500
Principals Of Existing Investor Relations Firm [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	225,000
Class of Warrant or Right, Issued During Period			0
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.55
Warrants Expiration Period	5 years
Stock Issued from Exercise of Warrants		100,000	341,462
Proceeds from Warrant Exercises		$ 77,100	$ 187,804
Aggregate Intrinsic Value Of Warrants Exercised		$ 102,000	$ 3,952,805
Stock Issued During Period Shares Cashless Exercise of Warrants			1,864,356
Stock Issued from Cashless Exercise of Warrants			1,431,080
Stock Issued During Period Shares Warrants Cancelled			433,276

Note 8 - Summary of Warrant Act

Note 8 - Summary of Warrant Activity (Details) - 6 months ended Jun. 30, 2015 - USD ($)	Total
Exercised (in shares)	(100,000)
Exercised (in dollars per share)	$ 0.77
Outstanding at June 30, 2015 (in shares)	150,001
Outstanding at June 30, 2015 (in dollars per share)	$ 0.55
Outstanding at June 30, 2015	$ 180,001
Exercisable at June 30, 2015 (in shares)	150,001
Exercisable at June 30, 2015 (in dollars per share)	$ 0.55
Exercisable at June 30, 2015	2 years 244 days
Exercisable at June 30, 2015	$ 180,001

Note 9 - Stock Options (Details

Note 9 - Stock Options (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Jan. 02, 2015	Dec. 31, 2014
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
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					5,558,432
Common Stock, Shares, Outstanding					37,056,215
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			5 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	3,519,168		3,519,168
Cashless Exercise [Member]
Number Of Common Shares Options Exercised			720,333	3,333
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			550,276	2,377
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period			170,057	956
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			$ 1,131,371	$ 5,399
Exercised For Cash Payments [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			379,667	130,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			$ 407,587	$ 190,450
Proceeds from Stock Options Exercised			186,034	66,450
General and Administrative Expense [Member]
Allocated Share-based Compensation Expense	$ 180,211	$ 71,935	$ 271,271	$ 148,280
Common Stock, Shares, Outstanding	38,086,158		38,086,158			37,056,215
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	3,519,168		3,519,168			3,500,168
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period			1,123,500	232,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 1.19	$ 1.71
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			1,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period			4,500
Proceeds from Stock Options Exercised	$ 171,400	$ 25,200	$ 186,034	$ 66,450
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period			1,123,500	232,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 1.19	$ 1.71
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 1,407,567		$ 1,407,567
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			2 years 73 days

Note 9 - Summary of Stock Valua

Note 9 - Summary of Stock Valuation Assumptions (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Expected volatility	107.00%		107.00%	124.00%
Risk-free interest rate	0.86%		0.84%	0.72%
Expected term (in years)	3 years 182 days		3 years 182 days	3 years 182 days

Note 9 - Summary of Stock Optio

Note 9 - Summary of Stock Option Activity (Details) - Scenario, Unspecified [Domain] - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Outstanding at December 31, 2014 (in shares)	3,519,168	3,500,168
Outstanding at December 31, 2014 (in dollars per share)	$ 1.30	$ 0.90
Outstanding at December 31, 2014	3 years 3 days	2 years 7 days
Outstanding at December 31, 2014	$ 1,322,085	$ 2,785,893
Granted (in shares)	1,123,500
Granted (in dollars per share)	$ 1.75
Exercised (in shares)	(1,100,000)
Exercised (in dollars per share)	$ 0.48
Forfeited or Expired (in shares)	(4,500)
Forfeited or Expired (in dollars per share)	$ 2.22
Vested or Expected to Vest at June 30, 2015 (in shares)	3,519,168
Vested or Expected to Vest at June 30, 2015 (in dollars per share)	$ 1.30
Vested or Expected to Vest at June 30, 2015	3 years 3 days
Vested or Expected to Vest at June 30, 2015	$ 1,322,085
Exercisable at June 30, 2015 (in shares)	2,177,999
Exercisable at June 30, 2015 (in dollars per share)	$ 1.02
Exercisable at June 30, 2015	2 years 36 days
Exercisable at June 30, 2015	$ 1,279,916

Note 9 - Summary of the Status

Note 9 - Summary of the Status of Non-vested Shares (Details) - $ / shares	6 Months Ended
	Jun. 30, 2015
Non-vested at December 31, 2014 (in shares)	498,504
Non-vested at December 31, 2014 (in dollars per share)	$ 1.05
Granted (in shares)	1,123,500
Granted (in dollars per share)	$ 1.19
Vested (in shares)	(277,835)
Vested (in dollars per share)	$ 0.80
Forfeited (in shares)	(3,000)
Forfeited (in dollars per share)	$ 1.70
Non-vested at June 30, 2015 (in shares)	1,341,169
Non-vested at June 30, 2015 (in dollars per share)	$ 1.22

Note 10 - Related Party Trans39

Note 10 - Related Party Transactions (Details Textual) - USD ($)	Feb. 27, 2015	Oct. 03, 2013	Feb. 03, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Guaranteed Loan [Member] | Chief Executive Officer [Member]
Long-term Debt, Gross		$ 100,000
Debt Instrument Monthly Payment	$ 12,500	12,500
Debt Instrument Annual Payments		$ 150,000
Board of Directors Chairman [Member]
Proceeds from Sale of Machinery and Equipment			$ 50,000
Property, Plant and Equipment, Net			38,000
Gain (Loss) on Disposition of Assets			$ 12,000
Proceeds from Sale of Machinery and Equipment				$ 5,000		$ 5,000	$ 50,000
Property, Plant and Equipment, Net				$ 38,165,263		$ 38,165,263		$ 37,789,004

Uncategorized Items - ensv-2015

Label	Element	Value
ensv_ShareBasedCompensationWeightedAverageExercisePriceWarrantsOutstanding	ensv_ShareBasedCompensationWeightedAverageExercisePriceWarrantsOutstanding	$ 0.64
ensv_ShareBasedCompensationAggregateIntrinsicValueOfWarrantsOutstanding	ensv_ShareBasedCompensationAggregateIntrinsicValueOfWarrantsOutstanding	$ 242,901
ensv_ShareBasedCompensationWarrantsOutstanding	ensv_ShareBasedCompensationWarrantsOutstanding	250,001