Note 4 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

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

	As of March 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	$	—	$	—		$	—	$	—
Liabilities:
Commodity price derivatives – current		—		51,758			—		51,758
Commodity price derivatives – noncurrent		—		5,342			—		5,342
Total liabilities		—		57,100			—		57,100
Total recurring fair value measurements	$	—	$	(57,100	)	$	—	$	(57,100	)

	As of December 31, 2021
	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	$	—	$	2,199		$	—	$	2,199
Liabilities:
Commodity price derivatives – current		—		13,591			—		13,591
Commodity price derivatives – noncurrent		—		4,075			—		4,075
Total liabilities		—		17,666			—		17,666
Total recurring fair value measurements	$	—	$	(15,467	)	$	—	$	(15,467	)

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

	As of March 31, 2022				As of December 31, 2021
	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Cash and cash equivalents	$	35,850	$	35,850	$	34,869	$	34,869
Liabilities:
Long-term debt:
Senior notes (a)	$	205,052	$	225,000	$	—	$	—