CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
ASSETS
Cash and cash equivalents	$ 171,874	$ 126,424
Accounts receivable, net of allowance for credit losses of $6,910 in 2023 and $7,078 in 2022	326,778	416,568
Inventories	109,969	97,107
Income taxes receivable	62,889	42,403
Prepaid expenses	11,701	17,753
Other current assets	3,228	3,086
Total current assets	686,439	703,341
Property, plant and equipment, less accumulated depreciation of $795,047 in 2023 and $775,334 in 2022	436,336	333,093
Operating lease right-of-use assets	25,567	28,864
Finance lease right-of-use assets	1,101
Goodwill	50,824	32,150
Other intangibles, net	13,354	1,084
Other assets	33,752	30,481
Total assets	1,247,373	1,129,013
LIABILITIES
Accounts payable	88,389	115,213
Accrued payroll and related expenses	27,909	33,161
Accrued insurance expenses	6,760	3,232
Accrued state, local and other taxes	6,196	4,296
Income taxes payable	259	499
Pension liabilities		9,610
Current portion of operating lease liabilities	7,959	10,728
Accrued expenses and other liabilities	2,640	1,864
Total current liabilities	140,112	178,603
Long-term accrued insurance expenses	9,489	7,149
Long-term retirement plan liabilities	21,898	23,106
Deferred income taxes	50,472	37,473
Long-term operating lease liabilities	19,040	19,517
Long-term finance lease liabilities	882
Other long-term liabilities	7,724	5,430
Total liabilities	249,617	271,278
Commitments and contingencies (Note 11)
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, 216,228,372 and 216,609,191 shares issued and outstanding in 2023 and 2022, respectively	21,623	21,661
Capital in excess of par value	0	0
Retained earnings	978,496	856,013
Accumulated other comprehensive loss	(2,363)	(19,939)
Total stockholders' equity	997,756	857,735
Total liabilities and stockholders' equity	$ 1,247,373	$ 1,129,013