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Employee Benefit and Deferred Compensation Plans - Amounts to be Amortized from AOCI (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Pension Benefits
Estimated costs that will be amortized from accumulated other comprehensive income into net periodic cost
Prior service cost	$ 0
Actuarial loss (gain)	215
Total	215
Other Benefits
Estimated costs that will be amortized from accumulated other comprehensive income into net periodic cost
Prior service cost	0
Actuarial loss (gain)	0
Total	$ 0

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- References

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Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

+ References

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Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

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Amount included in accumulated other comprehensive (income) loss for prior service cost (credit) expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

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