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Employee Benefit Plans - Fair value non-vested restricted shares (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Proceeds from Life Insurance Policy		$ 1,566,000	$ 507,000
Retirement Income Plan
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation exceeds fair value of the plan assets	$ (5,699,000)	(2,052,000)
Decreases (increases) in amount recognized in AOCI	$ 3,361,000	$ (6,863,000)	$ 3,043,000
Expected long-term return assumption	4.00%	4.00%	7.00%

X

- Definition

Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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- Definition

Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

+ References

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Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

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Amount of cash inflow for proceeds from settlement of corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy.

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