Note 11 - Hedging Program and Derivatives (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

Fair Value Financial Instruments as of December 31, 2021
	Asset			Liability
	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Commodity price derivatives	Derivatives - current	$	-	Derivatives - current	$	442
		$	-		$	442

Fair Value of Investments as of December 31, 2022
	Asset
	Balance Sheet Location	Fair Value
Financial instruments	Investments - long term	$	15,091
		$	15,091