Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 28, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents	$ 62,762	$ 108,966
Accounts receivable, net (Note 3)	162,107	199,284
Inventory (Note 4)	291,425	304,028
Prepaid and other current assets	71,828	61,314
Assets of discontinued operations-held for sale (Note 2)	84,298	42,500
Total current assets	672,420	716,092
Property, Plant and Equipment (net of accumulated depreciation of $1,470,506 at September 28, 2019 and $1,385,837 at December 31, 2018)	1,327,052	1,363,557
Deferred Tax Assets	393,224	375,471
Intangible Assets, net	47,203	52,460
Other Assets	156,795	120,299
Assets of discontinued operations-held for sale (Note 2)	0	51,207
Total Assets	2,596,694	2,679,086
Current Liabilities
Accounts payable	144,677	181,705
Accrued and other current liabilities (Note 6)	116,718	146,155
Current maturities of long-term debt (Note 7)	21,357	15,012
Current environmental liabilities (Note 8)	11,445	11,310
Liabilities of discontinued operations-held for sale (Note 2)	18,774	16,236
Total current liabilities	312,971	370,418
Long-Term Debt (Note 7)	1,212,432	1,173,157
Long-Term Environmental Liabilities (Note 8)	148,054	149,344
Pension and Other Postretirement Benefits	231,388	233,658
Deferred Tax Liabilities	23,842	28,016
Other Long-Term Liabilities	28,999	12,074
Liabilities of discontinued operations-held for sale (Note 2)	0	5,548
Commitments and Contingencies
Stockholders’ Equity
Preferred stock, 0 and 10,000,000 shares authorized at $0.00 and $0.01 par value, 0 and 1,725,000 issued and outstanding as of September 28, 2019 and December 31, 2018, respectively, aggregate liquidation preference $0 and $172,500	0	17
Common stock, 140,000,000 shares authorized at $0.01 par value, 63,210,811 and 49,291,130 issued and outstanding, as of September 28, 2019 and December 31, 2018, respectively	632	493
Additional paid-in capital	399,234	399,490
Retained earnings	393,640	462,568
Accumulated other comprehensive income (loss) (Note 11)	(154,498)	(155,697)
Total Stockholders’ Equity	639,008	706,871
Total Liabilities and Stockholders’ Equity	$ 2,596,694	$ 2,679,086