Inventories, Net (Tables)

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Components of Inventories

The components of inventories, net of allowances, are as follows (in thousands):

	December 31,
	2018		2017
Finished goods	$	76,981	$	79,226
Work in process	13,870		15,447
Raw materials and supplies	82,794		88,895
	$	173,645	$	183,568

Summary Of Allowance For Excess And Obsolete Inventory

The activity in the allowance for excess, obsolete, and net realizable value inventory account for the two years ended December 31, 2018 and 2017, was as follows (in thousands):

	Years Ended December 31,
	2018			2017
Balance at beginning of year	$	34,402		$	33,532
Provision	27,341			21,369
Charges processed	(15,238		)	(20,499		)
Balance at end of year	$	46,505		$	34,402