Other Financial Statement Information (Tables)

6 Months Ended

Jun. 30, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Inventories - Net

Inventories – net

	June 30, 2018			December 31, 2017
Raw materials	$	42,830		$	42,712
Work-in-process		10,469			9,609
Finished Goods		38,060			33,780
		91,359			86,101
Excess of current cost over LIFO cost		(3,399	)		(2,991	)
Noncurrent portion of inventory		(4,748	)		(5,224	)
	$	83,212		$	77,886

Property, Plant and Equipment - Net

Major classes of Property, plant and equipment are stated at cost and were as follows:

	June 30, 2018			December 31, 2017
Land and improvements	$	12,582		$	13,141
Buildings and improvements		74,917			75,941
Machinery, equipment and aircraft		168,522			166,999
Construction in progress		3,781			5,124
		259,802			261,205
Less accumulated depreciation		(154,630	)		(152,607	)
	$	105,172		$	108,598