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Employee benefit plan (Tables)
 12 Months Ended
Dec. 31, 2021
Retirement Benefits [Abstract]  
Schedule of Pension Obligation, Funded Status and Accumulated Pension Obligation The following table sets forth our pension obligation, funded status and accumulated pension obligation as of December 31, 2021 and 2020 ($ in thousands):
As of December 31,
20212020
Change in pension obligation
Balance at beginning of period $6,231 $6,764 
Service cost832 822 
Interest cost423 428 
Actuarial (gain) loss(266)332 
Effect of foreign exchange rates(194)(560)
Curtailment29 (264)
Benefits paid(1,065)(1,264)
Divestitures— (27)
Balance at end of period $5,990 $6,231 
Underfunded status(5,990)(6,231)
Accumulated pension obligation$(4,265)$(4,382)
Schedule of Net Periodic Pension Cost The following table presents the components of net periodic pension cost for the years ended December 31, 2021, 2020 and 2019 ($ in thousands):
Year Ended December 31,
202120202019
Service cost$832 $822 $795 
Interest cost423 428 492 
Effect of foreign exchange rates(194)(560)384 
Amortization of prior service cost1 1 1 
Amortization of loss (gain)2 6 (20)
Compensation-non-retirement post-employment benefits694 214 (1)
Settlement and curtailment gain(406)(289)(211)
Total net periodic pension cost$1,352 $622 $1,440 
Schedule of Weighted-Average Assumptions Used to Determine Pension Obligation
The weighted-average assumptions used to determine the pension obligation as of December 31, 2021 and 2020 and the net periodic pension cost for the years ended December 31, 2021, 2020 and 2019 were as follows:
As of December 31,
202120202019
Discount rate8.00 %7.10 %7.50 %
Rate of compensation increase4.79 %4.79 %4.79 %
Schedule of Expected Plan Payments
The following table represents our expected plan payments for the next five years and thereafter ($ in thousands):
As of December 31, 2021
2022$574 
2023596 
2024657 
2025726 
2026758 
Thereafter3,742 
Total expected plan payments$7,053