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Note 7 - Equity Investment - Investment Activity (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Beginning Balance |  |  |  |  |  | $ 306,470 |  |  |  |  |  |  | $ 306,470 |
Ending Balance |  | $ 282,491 |  |  |  |  |  |  |  |  |  |  | 282,491 |
Net income |  | 63,846 | [1] | $ 70,334 | [2] | 79,275 | [3] | $ 74,555 | $ 66,820 | [4] | $ 63,899 | [4] | 213,455 | $ 205,274
Sisecam Wyoming [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | 180,232 |  |  |  |  |  | 190,450 |  |  |  |  | 588,725 | 542,955
Gross profit |  | 34,454 |  |  |  |  |  | 39,679 |  |  |  |  | 148,063 | 119,723
Net income |  | 27,772 |  |  |  |  |  | 32,105 |  |  |  |  | 126,906 | 97,144
Sisecam Wyoming [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  | 290,900 |  |  |  | $ 306,470 |  | 280,300 |  |  | $ 276,004 |  | 306,470 | 276,004
Income allocation to NRP’s equity interests (1) | [5] | 13,608 |  |  |  |  |  | 15,732 |  |  |  |  | 62,184 | 47,601
Amortization of basis difference |  | (1,207) |  |  |  |  |  | (1,176) |  |  |  |  | (3,551) | (3,565)
Other comprehensive income (loss) |  | 2,200 |  |  |  |  |  | 289 |  |  |  |  | (16,472) | (1,179)
Distribution |  | (23,010) |  |  |  |  |  | (10,339) |  |  |  |  | (66,140) | (34,055)
Ending Balance |  | $ 282,491 |  | $ 290,900 |  |  |  | $ 284,806 | $ 280,300 |  |  |  | $ 282,491 | $ 284,806
[1] | Net income includes $2.9 million of income attributable to preferred unitholders that accumulated during the period, of which $2.9 million is allocated to the common unitholders and $0.1 million is allocated to the general partner.
[2] | Net income includes $5.0 million of income attributable to preferred unitholders that accumulated during the period, of which $4.9 million is allocated to the common unitholders and $0.1 million is allocated to the general partner.
[3] | Net income includes $6.7 million of income attributable to preferred unitholders that accumulated during the period, of which $6.5 million is allocated to the common unitholders and $0.1 million is allocated to the general partner.
[4] | Net income includes $7.5 million of income attributable to preferred unitholders that accumulated during the period, of which $7.4 million is allocated to the common unitholders and $0.2 million is allocated to the general partner.
[5] | Amounts reclassified into income out of accumulated other comprehensive loss were $2.3 million and $(3.0) million for the three months ended June 30, 2023 and 2022, respectively, and $(18.3) million and $(4.7) million for the six months ended June 30, 2023 and 2022, respectively.

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