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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
CURRENT ASSETS: |  |
Cash and cash equivalents | $ 55,574 | $ 36,482
Trade receivables | 104,579 | 161,679
Other receivables | 3,481 | 256
Inventories, net | 56,407 | 101,305
Advance royalties | 4,168 | 1,844
Prepaid expenses and other assets | 21,565 | 18,019
Total current assets | 245,774 | 319,585
PROPERTY, PLANT AND EQUIPMENT: |  |
Property, plant and equipment, at cost | 3,554,090 | 3,684,008
Less accumulated depreciation, depletion and amortization | (1,753,845) | (1,675,022)
Total property, plant and equipment, net | 1,800,245 | 2,008,986
OTHER ASSETS: |  |
Advance royalties | 56,791 | 52,057
Equity method investments | 27,268 | 28,529
Goodwill | 4,373 | 136,399
Operating lease right-of-use assets | 15,004 | 17,660
Other long-term assets | 16,561 | 23,478
Total other assets | 119,997 | 258,123
TOTAL ASSETS | 2,166,016 | 2,586,694
CURRENT LIABILITIES: |  |
Accounts payable | 47,511 | 80,566
Accrued taxes other than income taxes | 25,054 | 15,768
Accrued payroll and related expenses | 28,524 | 36,575
Accrued interest | 5,132 | 5,664
Workers' compensation and pneumoconiosis benefits | 10,646 | 11,175
Current finance lease obligations | 766 | 8,368
Current operating lease obligations | 1,854 | 3,251
Other current liabilities | 21,919 | 21,062
Current maturities, long-term debt, net | 73,199 | 13,157
Total current liabilities | 214,605 | 195,586
LONG-TERM LIABILITIES: |  |
Long-term debt, excluding current maturities, net | 519,421 | 768,194
Pneumoconiosis benefits | 105,068 | 94,389
Accrued pension benefit | 46,965 | 44,858
Workers' compensation | 47,521 | 45,503
Non-current asset retirement obligations | 121,487 | 133,018
Long-term finance lease obligations | 1,458 | 2,224
Long-term operating lease obligations | 13,078 | 14,316
Other liabilities | 24,146 | 23,182
Total long-term liabilities | 879,144 | 1,125,684
Total liabilities | 1,093,749 | 1,321,270
ARLP Partners' Capital: |  |
Limited Partners - Common Unitholders 127,195,219 and 126,915,597 units outstanding, respectively | 1,148,565 | 1,331,482
Accumulated other comprehensive loss | (87,674) | (77,993)
Total ARLP Partners' Capital | 1,060,891 | 1,253,489
Noncontrolling interest | 11,376 | 11,935
Total Partners' Capital | 1,072,267 | 1,265,424
TOTAL LIABILITIES AND PARTNERS' CAPITAL | $ 2,166,016 | $ 2,586,694

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- Definition Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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- Definition Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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