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Other Financial Statement Information (Tables) | 12 Months Ended
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Dec. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Inventories - Net | Inventories – net
|  | December 31 |
|  | 2019 |  |  | 2018 |
Raw materials |  | $ | 49,729 |  |  | $ | 43,041 |
Work-in-process |  |  | 9,352 |  |  |  | 8,818 |
Finished products |  |  | 45,760 |  |  |  | 42,163 |
|  |  | 104,841 |  |  |  | 94,022 |
Excess of current cost over LIFO cost |  |  | (4,667 | ) |  |  | (4,474 | )
Noncurrent portion of inventory |  |  | (4,456 | ) |  |  | (4,289 | )
|  | $ | 95,718 |  |  | $ | 85,259 |
Property, Plant and Equipment - Net | Major classes of property, plant and equipment are as follows:
|  | December 31 |
|  | 2019 |  |  | 2018 |
Land and improvements |  | $ | 22,218 |  |  | $ | 12,552 |
Buildings and improvements |  |  | 82,811 |  |  |  | 74,743 |
Machinery, equipment and aircraft |  |  | 180,221 |  |  |  | 171,015 |
Construction in progress |  |  | 9,460 |  |  |  | 3,392 |
|  |  | 294,710 |  |  |  | 261,702 |
Less accumulated depreciation |  |  | (170,692 | ) |  |  | (158,747 | )
|  | $ | 124,018 |  |  | $ | 102,955 |

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