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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
ASSETS    
Cash and cash equivalents $ 82,433 $ 84,496
Accounts receivable, net of allowance for doubtful accounts of $6,765 in 2021 and $4,815 in 2020 258,635 161,771
Inventories 78,983 82,918
Income taxes receivable 58,504 82,943
Prepaid expenses 9,773 9,124
Assets held for sale 692 4,032
Other current assets 2,990 3,075
Total current assets 492,010 428,359
Property, plant and equipment, less accumulated depreciation of $763,304 in 2021 and $790,712 in 2020 254,408 264,411
Operating lease right-of-use assets 24,572 27,270
Finance lease right-of-use assets 20,327  
Goodwill 32,150 32,150
Other assets 40,898 38,315
Total assets 864,365 790,505
LIABILITIES AND STOCKHOLDERS' EQUITY    
Accounts payable 74,404 41,080
Accrued payroll and related expenses 15,350 18,428
Accrued insurance expenses 10,129 5,489
Accrued state, local and other taxes 1,905 2,788
Income taxes payable 656 1,115
Current portion of operating lease liabilities 6,387 9,192
Current portion of finance lease liabilities 20,194  
Other accrued expenses 1,824 1,473
Total current liabilities 130,849 79,565
Long-term accrued insurance expenses 11,770 11,822
Long-term pension liabilities 35,376 33,080
Deferred income taxes 17,749 13,332
Long-term operating lease liabilities 19,719 21,090
Other long-term liabilities 7,111 49
Total liabilities 222,574 158,938
Commitments and contingencies (Note 12)
STOCKHOLDERS' EQUITY    
Preferred stock, $0.10 par value, 1,000,000 shares authorized, none issued
Common stock, $0.10 par value, 349,000,000 shares authorized, 215,628,716 and 214,951,093 shares issued and outstanding in 2021 and 2020, respectively 21,563 21,495
Capital in excess of par value 0 0
Retained earnings 640,936 627,778
Accumulated other comprehensive loss (20,708) (17,706)
Total stockholders' equity 641,791 631,567
Total liabilities and stockholders' equity $ 864,365 $ 790,505