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Pension and Supplemental Executive Retirement Plans - Defined Benefit Plan Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Components of net periodic pension cost
Interest cost	$ 113	$ 85
Expected return on plan assets	(164)	(167)
Amortization of net actuarial loss	29	107
Net periodic benefit (income) cost	(22)	25
Contributions paid	0	0
Service cost	0	0
Amortization of prior service cost	$ 0	$ 0

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