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Investment Securities - Investment Securities Continuous Unrealized Loss Position (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Debt Securities, Available-for-Sale, Unrealized Loss Position    
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 Months, number of positions 9 64
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 Months, fair value $ 3,846 $ 50,929
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, gross unrealized losses $ 71 $ 699
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, number of positions 327 364
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, fair value $ 253,083 $ 304,000
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, gross unrealized losses $ 19,710 $ 29,367
Number of investment positions 336 428
Fair value $ 256,929 $ 354,929
Gross unrealized losses $ 19,781 $ 30,066
Number of investment positions - more than twelve months, held to maturity 4 4
Fair value - more than twelve months, held to maturity $ 5,332 $ 4,591
Gross unrealized losses - more than twelve months, held to maturity $ 1,668 $ 2,409
Number of investment positions - held to maturity 4 4
Fair value - held to maturity $ 5,332 $ 4,591
Gross unrealized losses - held to maturity $ 1,668 $ 2,409
Agency mortgage-backed securities    
Debt Securities, Available-for-Sale, Unrealized Loss Position    
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 Months, number of positions   7
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 Months, fair value   $ 8,008
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, gross unrealized losses   $ 93
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, number of positions 92 93
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, fair value $ 53,836 $ 59,933
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, gross unrealized losses $ 5,228 $ 8,261
Agency CMO    
Debt Securities, Available-for-Sale, Unrealized Loss Position    
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 Months, number of positions   11
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 Months, fair value   $ 19,211
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, gross unrealized losses   $ 215
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, number of positions 21 22
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, fair value $ 7,195 $ 7,271
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, gross unrealized losses $ 140 $ 285
Agency notes and bonds    
Debt Securities, Available-for-Sale, Unrealized Loss Position    
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 Months, number of positions   7
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 Months, fair value   $ 4,830
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, gross unrealized losses   $ 57
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, number of positions 34 45
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, fair value $ 88,194 $ 112,046
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, gross unrealized losses $ 1,756 $ 4,703
Municipal obligations    
Debt Securities, Available-for-Sale, Unrealized Loss Position    
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 Months, number of positions 9 39
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 Months, fair value $ 3,846 $ 18,880
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, gross unrealized losses $ 71 $ 334
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, number of positions 177 196
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, fair value $ 98,417 $ 103,201
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, gross unrealized losses $ 12,549 $ 15,864
Treasury notes and bonds    
Debt Securities, Available-for-Sale, Unrealized Loss Position    
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, number of positions 3 8
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, fair value $ 5,441 $ 21,549
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, gross unrealized losses $ 37 $ 254
Corporate notes    
Debt Securities, Available-for-Sale, Unrealized Loss Position    
Number of investment positions - more than twelve months, held to maturity 4 4
Fair value - more than twelve months, held to maturity $ 5,332 $ 4,591
Gross unrealized losses - more than twelve months, held to maturity $ 1,668 $ 2,409