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Defined Benefit Plan | 6 Months Ended
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Jun. 30, 2023
Retirement Benefits [Abstract] |
Defined Benefit Plan | Defined Benefit Plan In connection with the acquisition of Arnold, the company has a defined benefit plan covering substantially all of Arnold’s employees at its Lupfig, Switzerland location. The benefits are based on years of service and the employees’ highest average compensation during the specific period. The unfunded liability of $1.7 million is recognized in the consolidated balance sheet as a component of other non-current liabilities at June 30, 2023. Net periodic benefit cost consists of the following for the three and six months ended June 30, 2023 and 2022 (in thousands):
| Three months ended June 30, |  | Six months ended June 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Service cost | $ | 91 |  |  | $ | 107 |  |  | $ | 181 |  |  | $ | 217 |
Interest cost | 62 |  |  | 10 |  |  | 122 |  |  | 21 |
Expected return on plan assets | (55) |  |  | (18) |  |  | (109) |  |  | (37) |
Amortization of unrecognized loss | (9) |  |  | (7) |  |  | (18) |  |  | (14) |
Effect of curtailment | — |  |  | (28) |  |  | (13) |  |  | (31) |
Net periodic benefit cost | $ | 89 |  |  | $ | 64 |  |  | $ | 163 |  |  | $ | 156 |
During the six months ended June 30, 2023, per the terms of the pension agreement, Arnold contributed $0.2 million to the plan. For the remainder of 2023, the expected contribution to the plan will be approximately $0.2 million. The plan assets are pooled with assets of other participating employers and are not separable; therefore, the fair values of the pension plan assets at June 30, 2023 were considered Level 3.

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- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 710 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//710/tableOfContent Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 712 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//712/tableOfContent Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//715/tableOfContent Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//718/tableOfContent + Details
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