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CONDENSED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 644,849 $ 395,839
Short-term investments 8,512 8,505
Trade accounts receivable 295,003 122,150
Inventories, net 140,418 59,619
Prepaid expenses and other receivables 24,833 41,088
Total current assets 1,113,615 627,201
Mineral interests, net 92,490 93,180
Property, plant and equipment, net 654,645 603,412
Deferred income taxes 24,191 125,276
Other long-term assets 13,978 15,142
Total assets 1,898,919 1,464,211
Current liabilities:    
Accounts payable 46,876 33,829
Accrued expenses 65,033 54,847
Short-term financing lease liabilities 22,770 23,622
Other current liabilities 9,792 9,830
Total current liabilities 144,471 122,128
Long-term debt 340,356 339,806
Asset retirement obligations 69,769 65,536
Long-term financing lease liabilities 18,251 28,434
Other long-term liabilities 35,015 36,324
Total liabilities 607,862 592,228
Stockholders’ Equity:    
Common stock, $0.01 par value, (140,000,000 shares authorized as of June 30, 2022 and December 31, 2021; 53,875,375 issued and 51,653,534 outstanding as of June 30, 2022; 53,659,643 issued and 51,437,802 outstanding as of December 31, 2021) 537 537
Preferred stock, $0.01 par value per share (10,000,000 shares authorized; no shares issued and outstanding) 0 0
Treasury stock, at cost (2,221,841 shares as of June 30, 2022 and December 31, 2021) (50,576) (50,576)
Additional paid in capital 263,991 256,059
Retained earnings 1,077,105 665,963
Total stockholders’ equity 1,291,057 871,983
Total liabilities and stockholders’ equity $ 1,898,919 $ 1,464,211