Employee Benefit Plans - Defined Benefit Plan - Components of net periodic pension expense (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) plan	Mar. 31, 2021 USD ($)
Net periodic expenses recognized in income:
Number of benefit pension plans | plan	2
Generations Bank Plan
Net periodic expenses recognized in income:
Service cost	$ 108	$ 115
Interest cost	102	105
Expected return on plan assets	(384)	(370)
Amortization of net losses		28
Net periodic pension benefit	(174)	(122)
Medina Savings and Loan Plan
Net periodic expenses recognized in income:
Service cost	8	8
Interest cost	28	32
Expected return on plan assets	(115)	(116)
Net periodic pension benefit	$ (79)	$ (76)