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CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($)
$ in Thousands
Mar. 30, 2019
Dec. 31, 2018
Current Assets    
Cash $ 35,394 $ 38,492
Short-term investments 99,524 114,326
Trade receivables, net 52,219 45,031
Gross inventories (Note 4) 86,362 80,288
Less LIFO reserve (46,944) (46,341)
Less excess and obsolescence reserve (2,936) (2,527)
Net inventories 36,482 31,420
Prepaid expenses and other current assets 3,098 2,920
Total Current Assets 226,717 232,189
Property, plant and equipment 361,276 358,756
Less allowances for depreciation (283,263) (276,045)
Net property, plant and equipment 78,013 82,711
Deferred income taxes 2,558 2,969
Other assets 24,423 17,663
Total Assets 331,711 335,532
Current Liabilities    
Trade accounts payable and accrued expenses 28,418 33,021
Contract liabilities with customers (Note 3) 3,959 7,477
Product liability 1,602 1,073
Employee compensation and benefits 12,572 20,729
Workers' compensation 5,669 5,551
Income taxes payable 3,347 3,340
Total Current Liabilities 55,567 71,191
Product liability 71 99
Lease liability (Note 5) 2,144
Contingent liabilities (Note 13)
Stockholders' Equity    
Additional paid-in capital 34,832 33,291
Retained earnings 358,569 350,423
Less: Treasury stock - at cost 2019 - 6,665,398 shares 2018 - 6,665,398 shares (143,595) (143,595)
Total Stockholders' Equity 273,929 264,242
Total Liabilities and Stockholders' Equity 331,711 335,532
Common Stock [Member]    
Stockholders' Equity    
Common Stock 24,123 24,123
Nonvoting Common Stock [Member]    
Stockholders' Equity    
Common Stock