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Unaudited Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
ASSETS    
Cash and cash equivalents $ 87,507 $ 88,450
Trade accounts receivable, net 19,127 18,894
Accounts receivable from affiliates 6,377 4,764
Inventories 50,955 47,551
Federal income tax receivable 8,959 17,615
Prepaid insurance 4,184 2,564
Other current assets 15,274 8,308
Total current assets 192,383 188,146
Property, plant and equipment, net 189,369 172,417
Intangibles, net 32,534 35,330
Investments in unconsolidated subsidiaries 19,312 28,978
Operating lease right-of-use assets 9,235 10,324
Other non-current assets 46,085 40,984
Total assets 488,918 476,179
LIABILITIES AND EQUITY    
Accounts payable 13,904 5,522
Accounts payable to affiliates 562 125
Revolving credit agreements 0 20,000
Current maturities of long-term debt 2,503 2,112
Asset retirement obligations 1,844 1,844
Accrued payroll 13,011 14,430
Other current liabilities 9,086 8,224
Total current liabilities 40,910 52,257
Long-term debt 14,501 24,353
Operating lease liabilities 10,109 11,196
Asset retirement obligations 41,693 39,888
Pension and other postretirement obligations 7,361 8,838
Deferred income taxes 12,563 17,550
Liability for uncertain tax positions 9,413 9,413
Other long-term liabilities 11,449 12,060
Total liabilities 147,999 175,555
Common stock:    
Capital in excess of par value 14,542 10,895
Retained earnings 330,373 294,270
Accumulated other comprehensive loss (11,170) (11,599)
Total stockholders' equity 340,919 300,624
Total liabilities and equity 488,918 476,179
Class A Common Stock    
Common stock:    
Common stock 5,607 5,490
Class B Common Stock    
Common stock:    
Common stock $ 1,567 $ 1,568