Note 9 - Commitments and Contingencies (Details Textual) - USD ($)				1 Months Ended	48 Months Ended
	Dec. 31, 2021	Nov. 22, 2021	Nov. 08, 2021	Jun. 30, 2015	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Self-insured Amount per Individual Claim				$ 50,000
Self-insured, Maximum Coverage Policy				$ 1,800,000
Self Insurance Reserve	$ 0				$ 0		$ 150,000
Other Income	92,000
Workers' Compensation, Maximum Coverage Policy						$ 1,800,000
Workers' Compensation, Accumulated Payments on Claims	1,800,000				1,800,000
Workers' Compensation, Estimated Accruals					1,600,000
Worker's Compensation, Prepaid Amount	126,000				126,000
Accounts Receivable, after Allowance for Credit Loss, Current, Total	2,845,000				2,845,000		$ 1,733,000
Amanda Mordica vs. Enservco Corporation, Heat Waves Hot Oil Service, LLC, and Two Former Employees [Member]
Loss Contingency, Damages Sought, Value		$ 10,700,000	$ 1,000,000.0
Accounts Receivable, after Allowance for Credit Loss, Current, Total	400,000				400,000
Accrued Liabilities, Current, Total	$ 400,000				$ 400,000