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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
SALES AND OPERATING REVENUES: |  |  |  |
Revenues | $ 355,651 | $ 464,726 | $ 961,616 | $ 1,508,382
EXPENSES: |  |  |  |
Operating expenses (excluding depreciation, depletion and amortization) | 216,027 | 278,254 | 637,533 | 895,255
Outside coal purchases |  | 10,599 |  | 15,910
General and administrative | 13,871 | 17,885 | 41,131 | 55,218
Depreciation, depletion and amortization | 80,182 | 72,348 | 237,662 | 220,400
Asset impairments |  | 15,190 | 24,977 | 15,190
Goodwill impairment |  |  | 132,026 |
Total operating expenses | 316,306 | 414,300 | 1,090,051 | 1,284,865
INCOME (LOSS) FROM OPERATIONS | 39,345 | 50,426 | (128,435) | 223,517
Interest expense (net of interest capitalized for the three and nine months ended September 30, 2020 and 2019 of $199, $298, $1,265 and $790, respectively) | (11,186) | (11,698) | (34,911) | (33,831)
Interest income | 30 | 92 | 112 | 321
Equity method investment income | 62 | 659 | 650 | 1,533
Equity securities income |  |  |  | 12,906
Acquisition gain |  |  |  | 177,043
Other expense | (723) | (228) | (1,456) | (370)
INCOME (LOSS) BEFORE INCOME TAXES | 27,528 | 39,251 | (164,040) | 381,119
INCOME TAX EXPENSE | 293 | 50 | 111 | 130
NET INCOME (LOSS) | 27,235 | 39,201 | (164,151) | 380,989
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTEREST | (36) | (117) | (97) | (7,407)
NET INCOME (LOSS) ATTRIBUTABLE TO ARLP | $ 27,199 | $ 39,084 | $ (164,248) | $ 373,582
EARNINGS PER LIMITED PARTNER UNIT - BASIC AND DILUTED | $ 0.21 | $ 0.30 | $ (1.29) | $ 2.86
WEIGHTED-AVERAGE NUMBER OF UNITS OUTSTANDING - BASIC AND DILUTED | 127,195,219 | 128,391,191 | 127,154,398 | 128,311,609
Coal sales |  |  |  |
SALES AND OPERATING REVENUES: |  |  |  |
Revenues | $ 335,767 | $ 420,005 | $ 886,690 | $ 1,357,331
EXPENSES: |  |  |  |
Operating expenses (excluding depreciation, depletion and amortization) | 216,027 | 278,254 | 637,533 | 895,255
Oil & gas royalties |  |  |  |
SALES AND OPERATING REVENUES: |  |  |  |
Revenues | 9,693 | 13,969 | 31,718 | 36,254
Transportation revenues |  |  |  |
SALES AND OPERATING REVENUES: |  |  |  |
Revenues | 6,226 | 20,024 | 16,722 | 82,892
EXPENSES: |  |  |  |
Transportation expenses | 6,226 | 20,024 | 16,722 | 82,892
Other revenues |  |  |  |
SALES AND OPERATING REVENUES: |  |  |  |
Revenues | $ 3,965 | $ 10,728 | $ 26,486 | $ 31,905

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