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Employee and Director Benefit Programs (Details 2) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
12. Employee and Director Benefit Programs
Benefit obligation at beginning of period	$ 5,011,000	$ 4,870,000	$ 4,700
Fair value of plan assets	$ 0	$ 0

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Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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