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Employee Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2021
Retirement Benefits [Abstract]  
Schedule of Costs of Retirement Plans
Net periodic pension benefit expense recorded in the Company's consolidated statement of operations for defined benefit pension plans include the following components (dollars in thousands):
 Pension Benefit
 202120202019
Service cost$1,280 $1,230 $1,050 
Interest cost800 930 1,070 
Expected return on plan assets(1,530)(1,450)(1,400)
Amortization of net loss910 890 580 
Net periodic benefit expense$1,460 $1,600 $1,300 
Schedule of Assumptions Used Weighted average assumptions used in accounting for the U.S. defined benefit pension plans are as follows:
 Pension Benefit
 202120202019
Discount rate for obligations3.06 %2.79 %3.41 %
Discount rate for benefit costs2.79 %3.41 %4.50 %
Rate of increase in compensation levelsN/AN/AN/A
Expected long-term rate of return on plan assets6.13 %6.13 %7.13 %
The Company utilizes a high-quality (Aa or greater) corporate bond yield curve as the basis for its domestic discount rate for its pension benefit plans. Management believes this yield curve removes the impact of including additional required corporate bond yields (potentially considered in the above-median curve) resulting from the uncertain economic climate that does not necessarily reflect the general trend in high-quality interest rates.
Weighted average assumptions used in accounting for the non-U.S. defined benefit pension plans are as follows:
 Pension Benefit
 202120202019
Discount rate for obligations2.10 %1.50 %2.10 %
Discount rate for benefit costs1.50 %2.10 %3.00 %
Rate of increase in compensation levels3.30 %2.80 %3.00 %
Expected long-term rate of return on plan assets3.90 %4.10 %4.60 %
Schedule of Changes in Projected Benefit Obligations and Fair Value of Plan Assets
The following provides a reconciliation of the changes in the Company's defined benefit pension plans' projected benefit obligations and fair value of assets for each of the years ended December 31, 2021 and 2020 and the funded status as of December 31, 2021 and 2020 (dollars in thousands):
Pension Benefit
20212020
Changes in Projected Benefit Obligations 
Benefit obligations at January 1$(40,830)$(36,580)
Service cost(1,280)(1,230)
Interest cost(800)(930)
Participant contributions(50)(60)
Actuarial gain (loss) (a)
3,290 (2,420)
Benefit payments1,840 1,140 
Change in foreign currency270 (750)
Projected benefit obligations at December 31$(37,560)$(40,830)
Changes in Plan Assets
Fair value of plan assets at January 1$36,060 $30,260 
Actual return on plan assets2,060 4,780 
Employer contributions2,050 1,140 
Participant contributions50 60 
Benefit payments(1,840)(1,140)
Change in foreign currency(250)960 
Fair value of plan assets at December 31$38,130 $36,060 
Funded status at December 31$570 $(4,770)
__________________________
(a) The actuarial gain for the year ended December 31, 2021 was primarily due to an increase in the discount rate utilized in measuring the projected benefit obligations as well as other assumptions and experience gains. The actuarial loss for the year ended December 31, 2020 was primarily due to a decrease in the discount rate utilized in measuring the projected benefit obligations, partially offset by other assumptions and experience gains.
Schedule of Amounts Recognized in Balance Sheet
Pension Benefit
20212020
Amounts Recognized in Balance Sheet
Other assets$7,740 $4,470 
Current liabilities(300)(340)
Noncurrent liabilities(6,870)(8,900)
Net asset (liability) recognized at December 31$570 $(4,770)
Schedule of Accumulated Other Comprehensive Income
Pension Benefit
20212020
Amounts Recognized in Accumulated Other Comprehensive Loss
Unrecognized prior service cost$310 $170 
Unrecognized net loss6,550 11,470 
Total accumulated other comprehensive loss recognized at December 31$6,860 $11,640 
Changes in AOCI by component for the year ended December 31, 2021 are summarized as follows, net of tax (dollars in thousands):
Defined Benefit Plans Derivative InstrumentsForeign Currency TranslationTotal
Balance, December 31, 2020$(8,620)$(3,580)$6,580 $(5,620)
Net unrealized gains (losses) arising during the period (a)
3,150 9,490 (7,430)5,210 
Less: Net realized losses reclassified to net income (b)
(640)— — (640)
Net current-period other comprehensive income (loss)3,790 9,490 (7,430)5,850 
Balance, December 31, 2021$(4,830)$5,910 $(850)$230 
__________________________
(a) Defined benefit plans, net of income tax of $0.8 million. See Note 18, "Employee Benefit Plans," for additional details. Derivative instruments, net of income tax of $3.1 million. See Note 14, "Derivative Instruments," for further details.
(b) Defined benefit plans, net of income tax of $0.2 million. See Note 18, "Employee Benefit Plans," for additional details.
Changes in AOCI by component for the year ended December 31, 2020 are summarized as follows, net of tax (dollars in thousands):
Defined Benefit Plans Derivative InstrumentsForeign Currency TranslationTotal
Balance, December 31, 2019$(9,930)$4,230 $(300)$(6,000)
Net unrealized gains (losses) arising during the period (a)
670 (7,810)6,880 (260)
Less: Net realized losses reclassified to net income (b)
(640)— — (640)
Net current-period other comprehensive income (loss)1,310 (7,810)6,880 380 
Balance, December 31, 2020$(8,620)$(3,580)$6,580 $(5,620)
__________________________
(a) Defined benefit plans, net of income tax of $0.4 million. See Note 18, "Employee Benefit Plans," for additional details. Derivative instruments, net of income tax expense of $2.5 million. See Note 14, "Derivative Instruments," for further details.
(b) Defined benefit plans, net of income tax of $0.2 million. See Note 18, "Employee Benefit Plans," for additional details.
Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets
 Accumulated Benefit ObligationsProjected Benefit Obligations
 2021202020212020
Benefit Obligations at December 31,
Total benefit obligations$(35,970)$(38,410)$(37,560)$(40,830)
Plans with benefit obligations exceeding plan assets    
Benefit obligations$(16,630)$(16,820)$(16,780)$(16,940)
Plan assets$9,610 $7,700 $9,610 $7,700 
Schedule of Effect of Change in Discount Rate and Expected Return on Assets on Benefit Obligations and Expense A 25 basis point change in benefit obligation discount rates or 50 basis point change in expected return on plan assets would have the following effect (dollars in thousands):
 Pension Benefit
 December 31, 2021
Benefit Obligation		2021 Expense
Discount rate  
25 basis point increase$(1,570)$(50)
25 basis point decrease$1,670 $50 
Expected return on assets
50 basis point increaseN/A$(190)
50 basis point decreaseN/A$190 
Schedule of Allocation of Plan Assets
The actual weighted average asset allocation of the Company's domestic and foreign pension plans' assets at December 31, 2021 and 2020 and target allocations by class, were as follows:
 Domestic PensionForeign Pension
 ActualActual
 Target20212020Target20212020
Equity securities60 %62 %67 %33 %34 %33 %
Fixed income36 %37 %32 %45 %44 %44 %
Diversified growth(a)
— %— %— %22 %22 %22 %
Cash and other4 %1 %1 %— — %1 %
Total100 %100 %100 %100 %100 %100 %
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
The following table summarizes the level under the fair value hierarchy (see Note 3, "Summary of Significant Accounting Policies") that the Company's pension plan assets are measured, on a recurring basis as of December 31, 2021 (dollars in thousands):
 TotalLevel 1Level 2Level 3
Plan assets subject to leveling    
Investment funds
Equity securities$5,970 $5,970 $— $— 
Fixed income 3,510 3,510 — — 
Cash and cash equivalents70 70 — — 
Plan assets measured at net asset value(a)
Investment funds
Equity securities9,540 
Fixed income12,360 
Diversified growth6,380 
Cash and cash equivalents300 
Total$38,130 $9,550 $— $— 
________________________________________
(a) Certain investments that are measured at fair value using the net asset value per share as a practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amount presented in the fair value of plan assets.
Schedule of Expected Benefit Payments
The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid during the following years (dollars in thousands):
 Pension
Benefit
2022$1,170 
20231,210 
20241,260 
20251,310 
20261,350 
Years 2027-20317,920