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Other Comprehensive Income (Loss) (Tables)
 12 Months Ended
Dec. 31, 2023
Equity [Abstract]  
Summary of Components of Other Comprehensive Income The tables below provide a summary of the components of OCI for the periods presented.

 

Year Ended December 31,

 

 

2023

 

 

2022

 

 

2021

 

 

Before-tax

 

 

Tax effect

 

 

After-tax

 

 

Before-tax

 

 

Tax effect

 

 

After-tax

 

 

Before-tax

 

 

Tax effect

 

 

After-tax

 

 

(Dollars in thousands)

 

Investment securities:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net change in fair value recorded in accumulated OCI

 

$

50,331

 

 

$

(14,880

)

 

$

35,451

 

 

$

(498,759

)

 

$

147,451

 

 

$

(351,308

)

 

$

(56,075

)

 

$

16,578

 

 

$

(39,497

)

Amortization of net unrealized losses on securities
   transferred from available-for-sale to held-to-maturity

 

 

914

 

 

 

(270

)

 

 

644

 

 

 

681

 

 

 

(201

)

 

 

480

 

 

 

256

 

 

 

(76

)

 

 

180

 

Derivatives designated as hedging instruments:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net change in fair value recorded in accumulated OCI

 

 

(6,938

)

 

 

2,070

 

 

 

(4,868

)

 

 

—

 

 

 

—

 

 

 

—

 

 

 

—

 

 

 

—

 

 

 

—

 

Net change

 

$

44,306

 

 

$

(13,079

)

 

$

31,227

 

 

$

(498,078

)

 

$

147,250

 

 

$

(350,828

)

 

$

(55,819

)

 

$

16,502

 

 

$

(39,317

)