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Employee benefit plans (Tables)
6 Months Ended
Jun. 30, 2022
Employee benefit plans  
Components of Net Periodic Defined Benefit Cost (Income)

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Three months ended

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Six months ended

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June 30, 

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June 30, 

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2021

    

2022

    

2021

    

2022

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(In thousands)

Interest cost

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$

279

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$

297

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$

432

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$

594

Expected return on plan assets

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(398)

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(392)

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(796)

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(784)

Recognized actuarial losses

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376

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373

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752

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746

Total

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$

257

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$

278

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$

388

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$

556