Note 4 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]

	As of December 31, 2023
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Commodity price derivatives – current	$	—	$	31,480	$	—	$	31,480
Commodity price derivatives – noncurrent		—		16,059		—		16,059
Total assets		—		47,539		—		47,539
Liabilities:
Commodity price derivatives – current		—		13,054		—		13,054
Commodity price derivatives – noncurrent		—		65		—		65
Total liabilities		—		13,119		—		13,119
Total recurring fair value measurements	$	—	$	34,420	$	—	$	34,420

	As of December 31, 2022
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total
Assets:
Commodity price derivatives– current	$	—	$	17		$	—	$	17
Liabilities:
Commodity price derivatives – current		—		16,702			—		16,702
Commodity price derivatives – noncurrent		—		691			—		691
Total liabilities		—		17,393			—		17,393
Total recurring fair value measurements	$	—	$	(17,376	)	$	—	$	(17,376	)

Fair Value, by Balance Sheet Grouping [Table Text Block]

	As of December 31, 2023				As of December 31, 2022
	Carrying				Carrying
	Value		Fair Value		Value		Fair Value
Liabilities:
Long-term debt:
10.625% Senior Notes (a)	$	—	$	—	$	250,000	$	250,000
10.000% Senior Notes (a)	$	—	$	—	$	225,000	$	225,000