Other Financial Statement Information (Tables)

12 Months Ended

Dec. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Inventories - Net

Inventories – net

	December 31
	2021			2020
Raw materials	$	76,636		$	53,947
Work-in-process		10,117			9,272
Finished products		37,216			38,801
		123,969			102,020
Excess of current cost over LIFO cost		(9,462	)		(4,483	)
	$	114,507		$	97,537

Property, Plant and Equipment - Net

Major classes of property, plant and equipment are as follows:

	December 31
	2021			2020
Land and improvements	$	21,039		$	22,132
Buildings and improvements		99,403			97,909
Machinery, equipment and aircraft		204,945			176,377
Construction in progress		10,605			9,563
		335,992			305,981
Less accumulated depreciation		(186,218	)		(180,016	)
	$	149,774		$	125,965