Repurchase Agreements - Additional Information (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Short-term Debt	$ 18,280,000	$ 12,705,000
Repurchase Agreements U.S. government agencies [Member]
Short-term Debt	$ 37,000,000.0	$ 30,100,000

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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