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Investment Securities (Tables)
 12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Schedule of Investment in AFS and HTM Securities
The table below summarizes the Company's investment in AFS securities by major security type.
As of December 31, 2025
(dollars in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesAllowance for Credit LossesEstimated Fair Value
U.S. agency securities$355,249 $— $(17,541)$— $337,708 
Residential mortgage-backed securities620,540 152 (58,188)— 562,504 
Commercial mortgage-backed securities68,931 117 (2,503)— 66,545 
Municipal bonds8,426 — (380)— 8,046 
Corporate bonds2,000 — (33)— 1,967 
Total available-for-sale securities$1,055,146 $269 $(78,645)$— $976,770 
As of December 31, 2024
(dollars in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesAllowance for Credit LossesEstimated Fair Value
U.S. treasury bonds$24,988 $— $(212)$— $24,776 
U.S. agency securities600,277 — (41,742)$— 558,535
Residential mortgage-backed securities719,815 36 (94,535)— 625,316
Commercial mortgage-backed securities53,248 — (4,303)— 48,945
Municipal bonds8,607 — (593)— 8,014
Corporate bonds2,000 — (160)(22)1,818
Total available-for-sale securities$1,408,935 $36 $(141,545)$(22)$1,267,404 
The table below summarizes the Company's investment in HTM securities by major security type.
As of December 31, 2025
(dollars in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
Residential mortgage-backed securities$544,402 $— $(58,836)$485,566 
Commercial mortgage-backed securities85,760 — (9,787)75,973 
Municipal bonds106,875 — (6,933)99,942 
Corporate bonds118,773 8 (5,315)113,466 
Total855,810 $8 $(80,871)$774,947 
Less: Allowance for credit losses
(1,030)
Total held-to-maturity securities, net of ACL$854,780 
As of December 31, 2024
(dollars in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
Residential mortgage-backed securities$605,904 $— $(85,941)$519,963 
Commercial mortgage-backed securities88,575 — (13,069)75,506 
Municipal bonds114,060 — (11,389)102,671 
Corporate bonds131,414 — (9,172)122,242 
Total939,953 $— $(119,571)$820,382 
Less: Allowance for credit losses
(1,306)
Total held-to-maturity securities, net of ACL$938,647 
Schedule of Continuous Unrealized Loss on AFS and HTM Securities
The table below summarizes, by length of time, the Company's AFS securities that have been in a continuous unrealized loss position and HTM securities that have been in a continuous unrecognized loss position.
As of December 31, 2025
Less than 12 Months12 Months or GreaterTotal
(dollars in thousands)Number of SecuritiesEstimated Fair ValueUnrealized LossesEstimated Fair ValueUnrealized LossesEstimated Fair ValueUnrealized Losses
Investment securities available-for-sale:
U.S. agency securities52 $— $— $337,708 $(17,541)$337,708 $(17,541)
Residential mortgage-backed securities139 — — 546,514 (58,188)546,514 (58,188)
Commercial mortgage-backed securities10 — — 37,329 (2,503)37,329 (2,503)
Municipal bonds1 — — 8,046 (380)8,046 (380)
Corporate bonds1 — — 1,967 (33)1,967 (33)
Total203 $— $— $931,564 $(78,645)$931,564 $(78,645)
Investment securities held-to-maturity:
Residential mortgage-backed securities136 $— $— $485,567 $(58,836)$485,567 $(58,836)
Commercial mortgage-backed securities16 4,271 (503)71,702 (9,284)75,973 (9,787)
Municipal bonds33 — — 98,942 (6,933)98,942 (6,933)
Corporate bonds27 1,922 (18)106,638 (5,297)108,560 (5,315)
Total212 $6,193 $(521)$762,849 $(80,350)$769,042 $(80,871)

As of December 31, 2024
Less than 12 Months12 Months or GreaterTotal
(dollars in thousands)Number of SecuritiesEstimated Fair ValueUnrealized LossesEstimated Fair ValueUnrealized LossesEstimated Fair ValueUnrealized Losses
Investment securities available-for-sale:
U.S. treasury bonds1 $— $— $24,776 $(212)$24,776 $(212)
U.S. agency securities71 2,300 (8)556,235 (41,734)558,535 (41,742)
Residential mortgage-backed securities148 7,530 (128)616,392 (94,407)623,922 (94,535)
Commercial mortgage-backed securities13 — — 48,945 (4,303)48,945 (4,303)
Municipal bonds1 — — 8,014 (593)8,014 (593)
Corporate bonds1 — — 1,818 (160)1,818 (160)
Total235$9,830 $(136)$1,256,180 $(141,409)$1,266,010 $(141,545)
Investment securities held-to-maturity:
Residential mortgage-backed securities140 $— $— $519,963 $(85,941)$519,963 $(85,941)
Commercial mortgage-backed securities16 — — 75,506 (13,069)75,506 (13,069)
Municipal bonds36 4,026 (75)98,645 (11,314)102,671 (11,389)
Corporate bonds30 1,928 (77)110,280 (9,095)112,208 (9,172)
Total222$5,954 $(152)$804,394 $(119,419)$810,348 $(119,571)
Schedule of Investment in AFS Securities and HTM Securities by Contractual Maturity
The table below summarizes the Company's investment in AFS securities and HTM securities by contractual maturity. Expected maturities for mortgage-backed securities ("MBS") will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
As of December 31, 2025
(dollars in thousands)Amortized CostEstimated Fair Value
Investment securities available-for-sale:
Within one year$58,374 $57,691 
One to five years224,088 213,883 
Five to ten years64,720 59,807 
Beyond ten years18,493 16,340 
Residential mortgage-backed securities620,540 562,504 
Commercial mortgage-backed securities68,931 66,545 
Less: allowance for credit losses— — 
Total investment securities available-for-sale1,055,146 976,770 
Investment securities held-to-maturity:
Within one year4,897 4,905 
One to five years71,023 69,041 
Five to ten years98,654 92,580 
Beyond ten years51,074 46,882 
Residential mortgage-backed securities: 544,402 485,566 
Commercial mortgage-backed securities85,760 75,973 
Less: allowance for credit losses(1,030)— 
Total investment securities held-to-maturity854,780 774,947 
Total$1,909,926 $1,751,717 
Schedule of Information About the Sales and Calls of Investment Securities
The table below displays information about the sales and calls of our investment securities.
For the Year Ended December 31,
(dollars in thousands)202520242023
Proceeds from sales and calls$276,162 $152,968 $11,209 
Gross realized gains from sales and calls20 14 129 
Gross realized losses from sales and calls3,843 — 140