Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 70,645	$ 41,844
Accounts receivable	130,538	124,014
Inventories	214,871	220,352
Prepaid and other current assets	23,299	24,733
Total current assets	439,353	410,943
Deferred income taxes	5,616	17,047
Property, plant, and equipment	898,251	891,789
Less allowances for depreciation, depletion, and amortization	(647,233)	(636,211)
Property, plant, and equipment — net	251,018	255,578
Intangible assets	6,461	9,847
Other assets	7,236	6,992
Goodwill	90,657	90,677
Total Assets	800,341	791,084
Current liabilities
Short-term debt	823	777
Accounts payable	49,622	49,059
Salaries and wages	47,501	42,694
Other liabilities and accrued items	33,301	28,044
Income taxes	2,615	1,084
Unearned revenue	5,918	5,451
Total current liabilities	139,780	127,109
Other long-term liabilities	14,764	14,895
Capital lease obligations	15,221	16,072
Retirement and post-employment benefits	38,853	93,225
Unearned income	32,563	36,905
Long-term income taxes	2,993	4,857
Deferred income taxes	195	213
Long-term debt	2,066	2,827
Shareholders’ equity
Serial preferred stock (no par value; 5,000 authorized shares, none issued)	0	0
Common stock (no par value; 60,000 authorized shares, issued shares of 27,148 for both 2018 and 2017)	234,704	223,484
Retained earnings	548,374	536,116
Common stock in treasury (6,906 shares for 2018 and 7,042 shares for 2017)	(175,426)	(166,128)
Accumulated other comprehensive loss	(58,234)	(102,937)
Other equity	4,488	4,446
Total shareholders’ equity	553,906	494,981
Total Liabilities and Shareholders’ Equity	$ 800,341	$ 791,084