CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Cash and cash equivalents	$ 50,023	$ 116,262
Accounts receivable, net	242,574	323,533
Inventories	100,947	130,083
Income taxes receivable	24,145	35,832
Prepaid expenses	10,459	9,766
Assets held for sale	5,385
Other current assets	3,325	3,462
Current assets	436,858	618,938
Property, plant and equipment, net	516,727	517,982
Operating lease right-of-use assets	33,850
Goodwill	32,150	32,150
Other assets	33,633	30,510
Total assets	1,053,218	1,199,580
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	53,147	103,401
Accrued payroll and related expenses	19,641	25,715
Accrued insurance expenses	7,540	6,183
Accrued state, local and other taxes	2,427	3,081
Income taxes payable	1,534	4,706
Current portion of operating leases	10,625
Other accrued expenses	6,488	151
Current liabilities	101,402	143,237
Long-term accrued insurance expenses	14,040	12,072
Long-term pension liabilities	39,254	29,638
Deferred income taxes	37,319	60,375
Long-term operating lease liabilities	28,378
Other long-term liabilities	2,492	3,839
Total liabilities	222,885	249,161
Commitments and contingencies (Note 11)
STOCKHOLDER'S 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, 214,422,979 and 214,543,511 shares issued and outstanding in 2019 and 2018, respectively	21,443	21,454
Capital in excess of par value
Retained earnings	832,113	947,711
Accumulated other comprehensive loss	(23,223)	(18,746)
Total stockholders' equity	830,333	950,419
Total liabilities and stockholders' equity	$ 1,053,218	$ 1,199,580