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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net income	$ 3,864	$ 3,456
Post-retirement benefit plan adjustments:
Amortization of net actuarial loss	43	43
Amortization of prior service credits	(124)	(124)
Income tax benefit	17	17
Comprehensive income	$ 3,800	$ 3,392

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