XML 43 R32.htm IDEA: XBRL DOCUMENT v3.24.3
Investment Securities (Tables)
9 Months Ended
Sep. 30, 2024
Investment Securities  
Summary of available-for-sale securities

Available-for-sale securities are summarized as follows as of the dates indicated:

September 30, 2024

Amortized

Gross

Gross

cost

unrealized gains

unrealized losses

Fair value

U.S. Treasury securities

$

49,757

$

$

(567)

$

49,190

Mortgage-backed securities:

Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises

222,443

445

(26,358)

196,530

Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises

514,924

1,280

(55,708)

460,496

Municipal securities

80

80

Corporate debt

2,000

(38)

1,962

Other securities

729

729

Total investment securities available-for-sale

$

789,933

$

1,725

$

(82,671)

$

708,987

December 31, 2023

Amortized

Gross

Gross

cost

unrealized gains

unrealized losses

Fair value

U.S. Treasury securities

$

74,508

$

$

(1,464)

$

73,044

Mortgage-backed securities:

Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises

233,264

57

(31,512)

201,809

Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises

417,155

(65,913)

351,242

Municipal securities

80

(1)

79

Corporate debt

2,000

(157)

1,843

Other securities

812

812

Total investment securities available-for-sale

$

727,819

$

57

$

(99,047)

$

628,829

Summary of unrealized losses for available-for-sale securities

The tables below summarize the available-for-sale securities with unrealized losses as of the dates shown, along with the length of the impairment period:

September 30, 2024

Less than 12 months

12 months or more

Total

Fair

Unrealized

Fair

Unrealized

Fair

Unrealized

value

losses

value

losses

value

losses

U.S. Treasury securities

$

$

$

49,190

$

(567)

$

49,190

$

(567)

Mortgage-backed securities:

Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises

181,541

(26,358)

181,541

(26,358)

Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises

16,334

(21)

321,668

(55,687)

338,002

(55,708)

Municipal securities

80

80

Corporate debt

1,963

(38)

1,963

(38)

Total

$

16,334

$

(21)

$

554,442

$

(82,650)

$

570,776

$

(82,671)

December 31, 2023

Less than 12 months

12 months or more

Total

Fair

Unrealized

Fair

Unrealized

Fair

Unrealized

value

losses

value

losses

value

losses

U.S. Treasury securities

$

$

$

73,044

$

(1,464)

$

73,044

$

(1,464)

Mortgage-backed securities:

Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises

9

199,000

(31,512)

199,009

(31,512)

Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises

138

(1)

351,104

(65,912)

351,242

(65,913)

Municipal securities

79

(1)

79

(1)

Corporate debt

1,843

(157)

1,843

(157)

Total

$

147

$

(1)

$

625,070

$

(99,046)

$

625,217

$

(99,047)

Summary of credit quality indicators, by fair value, of available-for-sale securities

The tables below summarize the credit quality indicators, by fair value, of available-for-sale securities as of the dates shown:

September 30, 2024

AA+

Not rated

Total

U.S. Treasury securities

$

49,190

$

$

49,190

Mortgage-backed securities:

Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises

196,530

196,530

Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises

460,496

460,496

Municipal securities

80

80

Corporate debt

1,962

1,962

Other securities

729

729

Total investment securities available-for-sale

$

706,216

$

2,771

$

708,987

December 31, 2023

AAA

Not rated

Total

U.S. Treasury securities

$

73,044

$

$

73,044

Mortgage-backed securities:

Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises

201,809

201,809

Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises

351,242

351,242

Municipal securities

79

79

Corporate debt

1,843

1,843

Other securities

812

812

Total investment securities available-for-sale

$

626,095

$

2,734

$

628,829

Summary of available-for-sale and held-to-maturity securities by maturity

A summary of the available-for-sale securities by maturity is shown in the following table as of September 30, 2024. Mortgage-backed securities may have actual maturities that differ from contractual maturities depending on the repayment characteristics and experience of the underlying financial instruments and are therefore not included in the table below. Additionally, the Company holds other available-for-sale securities with an amortized cost and fair value of $0.7 million as of September 30, 2024 that have no stated contractual maturity date.

September 30, 2024

Weighted

Amortized cost

Fair value

average yield

U.S. Treasury securities

Within one year

$

24,909

$

24,712

2.56%

After one but within five years

24,848

24,478

2.77%

Total U.S. Treasury securities

49,757

49,190

2.67%

Municipal securities

Within one year

80

80

3.14%

Corporate debt

After five but within ten years

2,000

1,962

5.86%

Total

$

51,837

$

51,232

A summary of the held-to-maturity securities by maturity is shown in the following table as of September 30, 2024. Actual maturities of mortgage-backed securities may differ from scheduled maturities depending on the repayment characteristics and experience of the underlying financial instruments and are therefore not included in the table below.

September 30, 2024

Weighted

Amortized cost

Fair value

average yield

U.S. Treasury securities

Within one year

$

24,956

$

24,794

3.18%

After one but within five years

24,607

24,363

3.10%

Total

$

49,563

$

49,157

3.14%

Summary of held-to-maturity securities

Held-to-maturity investment securities are summarized as follows as of the dates indicated:

September 30, 2024

    

Gross

    

Gross

    

Amortized

unrealized

unrealized

cost

gains

losses

Fair value

U.S. Treasury securities

$

49,563

$

$

(406)

$

49,157

Mortgage-backed securities:

Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises

270,518

705

(28,386)

242,837

Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises

218,076

26

(39,322)

178,780

Total investment securities held-to-maturity

$

538,157

$

731

$

(68,114)

$

470,774

December 31, 2023

    

Gross

    

Gross

    

Amortized

unrealized

unrealized

cost

gains

losses

Fair value

U.S. Treasury securities

$

49,338

$

$

(1,004)

$

48,334

Mortgage-backed securities:

Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises

299,337

226

(34,552)

265,011

Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises

236,377

2

(45,396)

190,983

Total investment securities held-to-maturity

$

585,052

$

228

$

(80,952)

$

504,328

Summary of unrealized losses for held-to-maturity securities

The held-to-maturity portfolio included 109 securities which were in an unrealized loss position as of September 30, 2024, compared to 123 securities at December 31, 2023. The tables below summarize the held-to-maturity securities with unrealized losses as of the dates shown, along with the length of the impairment period:

September 30, 2024

Less than 12 months

12 months or more

Total

Fair

Unrealized

Fair

Unrealized

Fair

Unrealized

value

losses

value

losses

value

losses

U.S. Treasury securities

$

$

$

49,157

$

(406)

$

49,157

$

(406)

Mortgage-backed securities:

Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises

201,590

(28,386)

201,590

(28,386)

Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises

175,839

(39,322)

175,839

(39,322)

Total

$

$

$

426,586

$

(68,114)

$

426,586

$

(68,114)

December 31, 2023

Less than 12 months

12 months or more

Total

Fair

Unrealized

Fair

Unrealized

Fair

Unrealized

value

losses

value

losses

value

losses

U.S. Treasury securities

$

$

$

48,334

$

(1,004)

$

48,334

$

(1,004)

Mortgage-backed securities:

Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises

14,689

(72)

217,467

(34,480)

232,156

(34,552)

Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises

2,289

(37)

187,021

(45,359)

189,310

(45,396)

Total

$

16,978

$

(109)

$

452,822

$

(80,843)

$

469,800

$

(80,952)

Summary of credit quality indicators, by amortized cost, of held-to-maturity securities

The tables below summarize the credit quality indicators, by amortized cost, of held-to-maturity securities as of the dates shown:

September 30, 2024

December 31, 2023

AA+

AAA

U.S. Treasury securities

$

49,563

$

49,338

Mortgage-backed securities:

Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises

270,518

299,337

Other residential MBS issued or guaranteed by U.S. government agencies or sponsored enterprises

218,076

236,377

Total investment securities held-to-maturity

$

538,157

$

585,052