Employee Benefit Plans (Tables) - Defined Benefit Pension Plans

12 Months Ended

Dec. 31, 2021

Expected Benefit Payments

Years ending December 31,	Amount
	(In thousands)
2022	$	3,689
2023		3,647
2024		3,570
2025		3,493
2026		3,435
Next 5 years		15,885

Funded Status of Defined Benefit Plans

	December 31,
	2020		2021
	(In thousands)
Change in projected benefit obligations (PBO):
Benefit obligations at beginning of the year	$	50,350	$	52,873
Interest cost		1,483		947
Actuarial losses		4,353		295
Change in currency exchange rates		307		(73)
Benefits paid		(3,620)		(3,675)
Benefit obligations at end of the year		52,873		50,367
Change in plan assets:
Fair value of plan assets at beginning of the year		46,313		50,260
Actual return on plan assets		5,308		226
Employer contributions		1,841		1,169
Change in currency exchange rates		418		(40)
Benefits paid		(3,620)		(3,675)
Fair value of plan assets at end of year		50,260		47,940
Funded status	$	(2,613)	$	(2,427)
Amounts recognized in the balance sheet:
Noncurrent pension asset	$	3,881	$	1,356
Accrued pension costs:
Current		(102)		(61)
Noncurrent		(6,392)		(3,722)
Total		(2,613)		(2,427)
Accumulated other comprehensive loss -  actuarial losses, net		28,209		28,265
Total	$	25,596	$	25,838
Accumulated benefit obligations (ABO)	$	52,873	$	50,367

Changes in Other Comprehensive Income (Loss)

	Years ended December 31,
	2019		2020		2021
	(In thousands)
Changes in plan assets and benefit obligations recognized in   other comprehensive income:
Net actuarial gain (loss) arising during the year	$	1,330	$	(934)	$	1,618
Amortization of unrecognized net actuarial gain (loss)		1,584		1,412		(1,562)
Total	$	2,914	$	478	$	56

Components of Net Periodic Defined Benefit Cost (Income)

	Years ended December 31,
	2019		2020		2021
	(In thousands)
Net periodic pension cost:
Interest cost on PBO	$	1,884	$	1,483	$	947
Expected return on plan assets		(1,899)		(1,850)		(1,603)
Recognized actuarial losses		1,584		1,412		1,562
Total	$	1,569	$	1,045	$	906

Information Concerning Defined Benefit Pension Plans (Including Certain Plans for Which ABO Exceeds Fair Value of Plan Assets)

	December 31,
	2020		2021
	(In thousands)
PBO at end of the year:
U.S. plan	$	43,754	$	40,254
U.K. plan		9,119		10,113
Total	$	52,873	$	50,367
Fair value of plan assets at end of the year:
U.S. plan	$	37,260	$	36,471
U.K. plan		13,000		11,469
Total	$	50,260	$	47,940
Plans for which the ABO exceeds plan assets (only our U.S. plan):
PBO	$	43,754	$	40,254
ABO		43,754		40,254
Fair value of plan assets		37,260		36,471

Summary of Assumptions Used to Determine Net Benefit Obligation

	Years ended December 31,
Rate	2019		2020		2021
Discount rate	3.9	%	2.9	%	2.1	%
Long-term rate of return on plan assets	4.7	%	4.2	%	3.3	%

Schedule of composition of our pension plan assets by fair value level

	Fair Value Measurements
			Quoted prices		Significant other		Significant
			in active		observable		unobservable		Assets measured
	Total		markets (Level 1)		inputs (Level 2)		inputs (Level 3)		at NAV
	(In thousands)
December 31, 2020:
U.S.
Equities	$	14,636	$	2,158	$	—	$	538	$	11,940
Fixed income		18,747		18,747		—		—		—
Cash and other		3,877		3,052		—		—		825
U.K. - Other		13,000		13,000		—		—		—
Total	$	50,260	$	36,957	$	—	$	538	$	12,765

	Fair Value Measurements
			Quoted prices		Significant other		Significant
			in active		observable		unobservable		Assets measured
	Total		markets (Level 1)		inputs (Level 2)		inputs (Level 3)		at NAV
	(In thousands)
December 31, 2021:
U.S.
Equities	$	12,951	$	831	$	—	$	108	$	12,012
Fixed income		21,299		—		—		—		21,299
Cash and other		2,221		1,352		—		—		869
U.K. - Other		11,469		1,324		—		10,145		—
Total	$	47,940	$	3,507	$	—	$	10,253	$	34,180