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Note 2 - Revenues From Contracts With Customers (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

Disaggregation of Revenue [Table Text Block]

		For the Three Months Ended September 30,								For the Nine Months Ended September 30,
(In thousands)		2023				2022				2023				2022
Coal royalty revenues		$	55,544			$	52,381			$	161,527			$	170,775
Production lease minimum revenues			850				1,885				2,025				3,542
Minimum lease straight-line revenues			4,464				4,778				13,414				14,235
Carbon neutral initiative revenues			681				8,600				2,914				8,600
Property tax revenues			1,770				1,360				4,710				4,527
Wheelage revenues			2,385				2,977				9,538				11,073
Coal overriding royalty revenues			827				1,367				1,165				2,307
Lease amendment revenues			623				759				2,322				2,450
Aggregates royalty revenues			736				884				2,175				2,691
Oil and gas royalty revenues			324				6,170				5,126				10,890
Other revenues			329				218				895				705
Royalty and other mineral rights revenues		$	68,533			$	81,379			$	205,811			$	231,795
Transportation and processing services revenues (1)			4,579				5,969				11,447				15,377
Total Mineral Rights segment revenues		$	73,112			$	87,348			$	217,258			$	247,172

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

		September 30,				December 31,
(In thousands)		2023				2022
Receivables
Accounts receivable, net		$	34,775			$	39,004
Other current assets, net (1)			2,382				—
Other long-term assets, net (2)			—				75
Contract liabilities
Current portion of deferred revenue		$	6,399			$	6,256
Deferred revenue			35,076				40,181

		For the Nine Months Ended September 30,
(In thousands)		2023				2022
Balance at beginning of period (current and non-current)		$	46,437			$	61,862
Increase due to minimums and lease amendment fees			11,525				11,309
Recognition of previously deferred revenue			(16,487	)			(28,403	)
Balance at end of period (current and non-current)		$	41,475			$	44,768

Lessor, Operating Lease, Payment to be Received, Maturity [Table Text Block]

Lease Term (1)		Weighted Average Remaining Years				Annual Minimum Payments
0 - 5 years			1.7			$	19,867
5 - 10 years			4.8				10,417
10+ years			12.0				27,129
Total			7.2			$	57,413

X

- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-10

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-5

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- Definition

Tabular disclosure of maturity of undiscounted cash flows to be received by lessor on annual basis for operating lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479773/842-30-50-12

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