Note 3 - Acquisitions (Details Textual)	1 Months Ended			3 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($)	Oct. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2020 USD ($)	Aug. 21, 2020 USD ($)	Sep. 30, 2020	Sep. 30, 2019 USD ($)
Payments to Acquire Oil and Gas Property and Equipment, Total	$ 704,000				$ 3,300,000
Number of Vertical Producing Properties Acquired						3
Number of Salt Water Disposal Wells Acquired						2
HighPeak Energy Assets II, LLC [Member] | Grenadier Acquisition [Member]
Payments to Acquire Businesses, Gross			$ 615,000,000
Business Combination, Escrow Deposit							$ 61,500,000
HPK, LP [Member] | Grenadier Acquisition [Member]
Payments to Acquire Businesses, Gross		$ 30,750,000
Business Combination, Amount of Deposit Released from Escrow		30,750,000
Business Combination, Escrow Deposit Not Credited Toward Purchase Price		$ 15,000,000
Business Combination Terminated, Charge to Expense				$ 76,500,000