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Investments in Securities - Investments Classified by Contractual Maturity Date (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Investments in Securities
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five	$ 1,002
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five	1,040
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10	9,200
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10	9,847
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10	28,238
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10	29,128
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	450,758
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	461,017
Available For Sale Securities Amortized Cost of Contractual Maturities	489,198
Available For Sale Securities Fair Value of Contractual Maturities	$ 501,032

X

- Definition

Represents the monetary amount of Available For Sale Securities Amortized Cost of Contractual Maturities, during the indicated time period.

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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