Securities - Amortized Cost and Fair Value of Debt Securities by Contractual Maturity - Securities Held-to-maturity (Details) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Held-to-maturity, Amortized Cost
Due after three months through one year	$ 665,000
Due after one through five years	8,869,000
Due after five through ten years	22,270,000
Agency mortgage-backed securities	589,386,000
Total	621,190,000
Held-to-maturity, Estimated Fair Value
Due after three months through one year	663,000
Due after one through five years	8,569,000
Due after five through ten years	20,878,000
Agency mortgage-backed securities	497,328,000
Total	527,438,000	$ 564,127,000
Allowance for credit loss current period	$ 12,000	$ 12,000

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Fair value of held-to-maturity debt securities maturing after 3 months through one year following the latest balance sheet.

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Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity).

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Amount excluding accrued interest, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) 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).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in sixth through tenth rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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