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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Current assets:    
Cash and cash equivalents $ 447,990 $ 481,578
Trade accounts receivable, net of allowance for credit losses of $2,291 and $2,396 as of March 31, 2025 and December 31, 2024, respectively 341,991 362,141
Inventories, net 190,093 169,269
Prepaid expenses and other current assets 27,460 23,681
Total current assets 1,007,534 1,036,669
Property, plant, and equipment, net of accumulated depreciation and amortization of $701,951 and $667,260 as of March 31, 2025 and December 31, 2024, respectively 629,045 634,871
Owned and leased mineral rights, net of accumulated depletion and amortization of $132,229 and $124,965 as of March 31, 2025 and December 31, 2024, respectively 435,852 443,467
Other acquired intangibles, net of accumulated amortization of $42,801 and $41,444 as of March 31, 2025 and December 31, 2024, respectively 38,522 39,879
Long-term restricted cash 124,185 122,583
Long-term restricted investments 42,960 43,131
Deferred income taxes 6,852 6,516
Other non-current assets 115,550 111,592
Total assets 2,400,500 2,438,708
Current liabilities:    
Current portion of long-term debt 2,669 2,916
Trade accounts payable 110,195 96,633
Accrued expenses and other current liabilities 147,293 151,560
Total current liabilities 260,157 251,109
Long-term debt 2,365 2,868
Workers’ compensation and black lung obligations 181,278 182,961
Pension obligations 99,830 100,597
Asset retirement obligations 191,970 189,805
Deferred income taxes 29,709 40,486
Other non-current liabilities 20,353 21,385
Total liabilities 785,662 789,211
Commitments and Contingencies (Note 13)
Stockholders’ Equity    
Preferred stock - par value $0.01, 5,000,000 shares authorized, none issued 0 0
Common stock - par value $0.01, 50,000,000 shares authorized, 22,436,240 issued and 13,052,684 outstanding at March 31, 2025 and 22,383,325 issued and 13,016,390 outstanding at December 31, 2024 224 224
Additional paid-in capital 841,870 839,804
Accumulated other comprehensive loss (48,995) (50,082)
Treasury stock, at cost: 9,383,556 shares at March 31, 2025 and 9,366,935 shares at December 31, 2024 (1,300,700) (1,296,916)
Retained earnings 2,122,439 2,156,467
Total stockholders’ equity 1,614,838 1,649,497
Total liabilities and stockholders’ equity $ 2,400,500 $ 2,438,708