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Comprehensive Income - Reclassification adjustments out of accumulated other comprehensive loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Amortization of defined benefit pension items
Prior service cost	$ 2
Actuarial losses	206
Total before tax	208
Tax benefit	(54)
Net of tax	$ 154	$ 183

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