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OPERATING REVENUES - Revenue Recognition (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of operating revenue
Total oil, natural gas and natural gas liquids sales	$ 284,154	$ 146,775
Other	1,051	1,514
Total operating revenues	285,205	148,289
Oil
Disaggregation of operating revenue
Total oil, natural gas and natural gas liquids sales	213,512	125,985
Natural gas
Disaggregation of operating revenue
Total oil, natural gas and natural gas liquids sales	35,248	5,818
NGLs
Disaggregation of operating revenue
Total oil, natural gas and natural gas liquids sales	35,394	14,972
Accounts receivable
Disaggregation of operating revenue
Due from contracts with customers	$ 35,100	$ 24,500

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