XML 73 R63.htm IDEA: XBRL DOCUMENT v3.23.1
Employee Benefit plans - Net periodic benefit cost (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Retirement Benefits [Abstract]    
Service cost $ 2,088 $ 2,522
Interest cost 617 64
Expected return on plan assets (1,540) (1,071)
Amortization of prior service cost 103 194
Amortization of actuarial losses 90 88
Net periodic benefit cost $ 1,358 $ 1,797