Note 4 - Long-term Debt (Details Textual) $ in Millions	Jan. 03, 2022 USD ($) shares
Series A Preferred Stock [Member]
Maximum Aggregate Proceeds Received Allowed, Tier One Preference Amount	$ 100.0
Stock Issued During Period, Shares, New Issues (in shares) \| shares	685,505
Preferred Stock, Voting Power, Percent	85.00%
Lime Rock Resources V-A, L.P. [Member]
Proceeds from Sale of Property, Plant, and Equipment, Total	$ 87.2

Number of new stock issued during the period.

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