Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2023

Equity [Abstract]

Changes in Accumulated Other Comprehensive Income (Loss)

Changes in accumulated other comprehensive income (loss), which is presented net of tax, consist of the following:

	Foreign Currency Translation Adjustment			Unrealized Gains (Losses) on Marketable Securities			Unrealized (Losses) Gains on Cash Flow Hedges			Retirement Plans Prior Service Credit			Total
	(in thousands)
Balance at December 31, 2021, net of tax of $0, $1,055, $0,     $(1,128), respectively	$	(10,818	)	$	3,704		$	—		$	1,166		$	(5,948	)
Other comprehensive loss before reclassifications, net of tax of     $0, $(3,388), $(708), $0, respectively		(29,031	)		(12,666	)		(2,517	)		—			(44,214	)
Amounts reclassified from accumulated other comprehensive     income (loss), net of tax of $0, $25, $0, $(2), respectively		—			301			—			(7	)		294
Net current period other comprehensive loss, net of tax of $0,     $(3,363), $(708), $(2), respectively		(29,031	)		(12,365	)		(2,517	)		(7	)		(43,920	)
Balance at December 31, 2022, net of tax of $0, $(2,308), $(708),     $(1,130), respectively	$	(39,849	)	$	(8,661	)	$	(2,517	)	$	1,159		$	(49,868	)
Other comprehensive gain before reclassifications, net of tax of     $0, $568, $1,537, $0, respectively		17,407			2,423			5,464			—			25,294
Amounts reclassified from accumulated other comprehensive     income (loss), net of tax of $0, $12, $(686), $(2),     respectively		—			44			(2,441	)		(7	)		(2,404	)
Net current period other comprehensive gain (loss), net of tax     of $0 $580, $851, $(2), respectively		17,407			2,467			3,023			(7	)		22,890
Balance at December 31, 2023, net of tax of $0, $(1,728), $143,     $(1,132), respectively	$	(22,442	)	$	(6,194	)	$	506		$	1,152		$	(26,978	)

Reclassifications Out of Accumulated Other Comprehensive Income (Loss) to Statements of Operations

Reclassifications out of accumulated other comprehensive income (loss) to the statements of operations for the years ended December 31, 2023, 2022, and 2021, were as follows:

Details about Accumulate Other Comprehensive Income (Loss) Components	For the years ended								Affected Line Item in the Statements of Operations
	December 31, 2023			December 31, 2022			December 31, 2021
	(in thousands)
Available-for-sale marketable securities
Unrealized (losses) gains, net of tax of $(12), $(25), $277,     respectively	$	(44	)	$	(301	)	$	995	Other (income) expense, net
Cash flow hedges:
Unrealized gains, net of tax of $686, $0, $0, respectively		2,441			—			—	Revenue
Defined benefit pension and postretirement plans:
Amortization of prior service benefit, net of tax of $2, $2, $2,     respectively		7			7			7	(a)
Total reclassifications, net of tax of $676, $(23), $279, respectively	$	2,404		$	(294	)	$	1,002	Net income

(a)The amortization of prior service credit is included in the computation of net periodic pension cost and postretirement benefit; see Note P: “Retirement Plans.”