Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 29, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 41,864	$ 70,645
Accounts receivable	144,952	130,538
Inventories, net	224,198	214,871
Prepaid and other current assets	23,832	23,299
Total current assets	434,846	439,353
Deferred income taxes	5,301	5,616
Property, Plant and Equipment	908,481	898,251
Less allowances for depreciation, depletion, and amortization	(656,326)	(647,233)
Property, plant, and equipment—net	252,155	251,018
Operating lease, right-of-use asset	28,327	0
Intangible assets	5,808	6,461
Other assets	7,725	7,236
Goodwill	90,600	90,657
Total Assets	824,762	800,341
Current liabilities
Short-term debt	836	823
Accounts payable	56,586	49,622
Salaries and wages	24,435	47,501
Other liabilities and accrued items	38,228	33,301
Income taxes	5,877	2,615
Unearned revenue	5,194	5,918
Total current liabilities	131,156	139,780
Other long-term liabilities	11,231	14,764
Operating lease liabilities	22,575	0
Finance lease liabilities	18,502	15,221
Retirement and post-employment benefits	37,813	38,853
Unearned income	31,478	32,563
Long-term income taxes	3,067	2,993
Deferred income taxes	194	195
Long-term debt	1,869	2,066
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 at March 29 and December 31)	241,480	234,704
Retained earnings	562,941	548,374
Common stock in treasury (6,794 shares at March 29 and 6,906 shares at December 31)	(184,812)	(175,426)
Accumulated other comprehensive loss	(57,270)	(58,234)
Other equity	4,538	4,488
Total shareholders' equity	566,877	553,906
Total Liabilities and Shareholders’ Equity	$ 824,762	$ 800,341