Supplementary Balance Sheet Detail (Tables)

12 Months Ended

Dec. 31, 2023

Balance Sheet Related Disclosures [Abstract]

Schedule Of Amounts Recognized In Balance Sheet

The following tables present supplementary balance sheet details:

	December 31, 2023		December 31, 2022
	(Dollars in thousands)
Inventories:
Raw materials and supplies	$	109,084	$	216,761
Work in process	186,473		192,821
Finished goods	34,589		38,159
	$	330,146	$	447,741
Prepaid expenses and other current assets:
Prepaid expenses	$	11,176	$	15,261
Value-added tax and other indirect taxes receivable	28,629		39,417
Spare parts inventory	15,242		12,990
Other current assets	11,335		19,604
	$	66,382	$	87,272
Property, plant and equipment:
Land and improvements	$	49,962	$	48,478
Buildings	87,820		82,054
Machinery and equipment and other	717,002		655,823
Construction in progress	65,660		82,813
	$	920,444	$	869,168
Other accrued liabilities:
Payrolls (including incentive programs)	$	22,369	$	10,799
Employee benefits	7,018		6,921
Deferred revenue	31,583		27,878
Other	30,732		43,751
	$	91,702	$	89,349
Other long-term obligations:
Post-employment benefits	$	12,613	$	11,996
Pension and related benefits	26,068		22,768
Other	16,964		16,058
	$	55,645	$	50,822

Schedule Of Analysis Of The Allowance For Doubtful Accounts

The following table presents an analysis of the allowance for doubtful accounts for the years ended December 31:

	2023		2022		2021
	(Dollars in thousands)
Balance at beginning of year	$	8,019	$	6,835	$	8,243
(Credit) charge to income	(439)		1,585		(1,266)
Deductions	128		(401)		(142)
Balance at end of year	$	7,708	$	8,019	$	6,835

Supplier Finance Program

See below for a rollforward of our SFP obligations.

	(Dollars in thousands)
Confirmed obligations outstanding as of December 31, 2022	$	—
Invoices confirmed during the year	24,368
Confirmed invoices paid during the year	(19,732)
Confirmed obligations outstanding as of December 31, 2023	$	4,636