Note 15 - Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

	Year Ended December 31,
	2019		2018		2017
Supplemental cash items:
Cash paid for interest (1)	$	66,720	$	61,501	$	65,873
Cash paid for income taxes		51		138		185
Cash refunds received for income taxes		51,833		11,126		11,906
Cash paid for share-based compensation (2)		—		1,130		874
Cash received for interest income		7,720		2,385		315
Non-cash investing activities:
Accruals of property and equipment		29,662		18,575		33,003
ARO - additions, dispositions and revisions, net		37,440		19,877		21,245