Investments in Securities - Investments classified by contractual maturity date (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Available-for-Sale - Amortized Cost
After two through three years	$ 245
After three through four years	985
After five through fifteen years	10,615
After fifteen years	46,763
Securities not due on a single maturity date	535,956
Available-for-sale securities, Amortized Cost, Total	594,564	$ 531,892
Available-for-Sale - Fair Value
After two through three years	245
After three through four years	987
After five through fifteen years	10,313
After fifteen years	44,403
Securities not due on a single maturity date	477,425
Available-for-Sale, Fair Value, Total	533,373	478,207
Held-to-Maturity - Amortized Carrying Value
After five through fifteen years	3,245
After fifteen years	2,906
Securities not due on a single maturity date	181,282
Held-to-Maturity, Amortized Carrying Value, Total	187,433	195,023
Held-to-Maturity - Fair Value
After five through fifteen years	2,913
After fifteen years	2,588
Securities not due on a single maturity date	157,264
Held-to-maturity, Fair Value, Total	$ 162,765	$ 171,193

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 after year fifteen. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

No definition available.