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Investment Securities (Tables)
3 Months Ended
Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]  
Summary of Amortized Cost and Estimated Fair Value of Investment Securities

 

March 31, 2022

 

 

Amortized Cost

 

 

Gross Unrealized Holding Gain

 

 

Gross Unrealized Holding Loss

 

 

Fair Value

 

 

Total Percent

 

 

(Dollars in thousands)

 

Investment securities available-for-sale:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mortgage-backed securities

$

3,243,037

 

 

$

3,973

 

 

$

(166,018

)

 

$

3,080,992

 

 

 

84.47

%

CMO/REMIC

 

578,213

 

 

 

65

 

 

 

(41,281

)

 

 

536,997

 

 

 

14.72

%

Municipal bonds

 

28,364

 

 

 

218

 

 

 

(351

)

 

 

28,231

 

 

 

0.77

%

Other securities

 

1,110

 

 

 

-

 

 

 

-

 

 

 

1,110

 

 

 

0.04

%

Total available-for-sale securities

$

3,850,724

 

 

$

4,256

 

 

$

(207,650

)

 

$

3,647,330

 

 

 

100.00

%

Investment securities held-to-maturity:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Government agency/GSE

$

570,332

 

 

$

722

 

 

$

(52,738

)

 

$

518,316

 

 

 

24.14

%

Mortgage-backed securities

 

632,012

 

 

 

227

 

 

 

(43,928

)

 

 

588,311

 

 

 

26.75

%

CMO/REMIC

 

818,279

 

 

 

-

 

 

 

(44,778

)

 

 

773,501

 

 

 

34.63

%

Municipal bonds

 

342,118

 

 

 

758

 

 

 

(19,860

)

 

 

323,016

 

 

 

14.48

%

Total held-to-maturity securities

$

2,362,741

 

 

$

1,707

 

 

$

(161,304

)

 

$

2,203,144

 

 

 

100.00

%

 

 

 

December 31, 2021

 

 

Amortized Cost

 

 

Gross Unrealized Holding Gain

 

 

Gross Unrealized Holding Loss

 

 

Fair Value

 

 

Total Percent

 

 

(Dollars in thousands)

 

Investment securities available-for-sale:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mortgage-backed securities

$

2,553,246

 

 

$

25,873

 

 

$

(15,905

)

 

$

2,563,214

 

 

 

80.50

%

CMO/REMIC

 

602,555

 

 

 

1,586

 

 

 

(13,983

)

 

 

590,158

 

 

 

18.53

%

Municipal bonds

 

28,365

 

 

 

1,103

 

 

 

-

 

 

 

29,468

 

 

 

0.93

%

Other securities

 

1,083

 

 

 

-

 

 

 

-

 

 

 

1,083

 

 

 

0.04

%

Total available-for-sale securities

$

3,185,249

 

 

$

28,562

 

 

$

(29,888

)

 

$

3,183,923

 

 

 

100.00

%

Investment securities held-to-maturity:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Government agency/GSE

$

576,899

 

 

$

5,907

 

 

$

(7,312

)

 

$

575,494

 

 

 

29.95

%

Mortgage-backed securities

 

647,390

 

 

 

4,109

 

 

 

(6,106

)

 

 

645,393

 

 

 

33.61

%

CMO/REMIC

 

490,670

 

 

 

596

 

 

 

(5,030

)

 

 

486,236

 

 

 

25.48

%

Municipal bonds

 

211,011

 

 

 

4,714

 

 

 

(1,155

)

 

 

214,570

 

 

 

10.96

%

Total held-to-maturity securities

$

1,925,970

 

 

$

15,326

 

 

$

(19,603

)

 

$

1,921,693

 

 

 

100.00

%

 

Summary of Interest Income Earned on Investment Securities

The following table provides information about the amount of interest income earned on investment securities which is fully taxable and which is exempt from regular federal income tax.

 

 

Three Months Ended

 

 

March 31,

 

 

2022

 

 

2021

 

 

(Dollars in thousands)

 

Investment securities available-for-sale:

 

 

 

 

 

Taxable

$

12,649

 

 

$

8,968

 

Tax-advantaged

 

183

 

 

 

191

 

Total interest income from available-for-sale securities

 

12,832

 

 

 

9,159

 

Investment securities held-to-maturity:

 

 

 

 

 

Taxable

 

9,105

 

 

 

2,811

 

Tax-advantaged

 

1,558

 

 

 

1,129

 

Total interest income from held-to-maturity securities

 

10,663

 

 

 

3,940

 

Total interest income from investment securities

$

23,495

 

 

$

13,099

 

 

Summary of Continuous Unrealized Loss Position of Securities

The following table presents the Company’s available-for-sale investment securities, by investment category, in an unrealized loss position for which an allowance for credit losses has not been recorded as of March 31, 2022 and December 31, 2021.

 

 

March 31, 2022

 

 

Less Than 12 Months

 

 

12 Months or Longer

 

 

Total

 

 

Fair Value

 

 

Gross Unrealized Holding Losses

 

 

Fair Value

 

 

Gross Unrealized Holding Losses

 

 

Fair Value

 

 

Gross Unrealized Holding Losses

 

 

(Dollars in thousands)

 

Investment securities available-for-sale:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mortgage-backed securities

$

1,551,620

 

 

$

(92,654

)

 

$

851,349

 

 

$

(73,364

)

 

$

2,402,969

 

 

$

(166,018

)

CMO/REMIC

 

192,973

 

 

 

(10,983

)

 

 

331,988

 

 

 

(30,298

)

 

 

524,961

 

 

 

(41,281

)

Municipal bonds

 

14,990

 

 

 

(351

)

 

 

-

 

 

 

-

 

 

 

14,990

 

 

 

(351

)

Total available-for-sale securities

$

1,759,583

 

 

$

(103,988

)

 

$

1,183,337

 

 

$

(103,662

)

 

$

2,942,920

 

 

$

(207,650

)

Investment securities held-to-maturity:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Government agency/GSE

$

242,300

 

 

$

(21,492

)

 

$

242,589

 

 

$

(31,246

)

 

$

484,889

 

 

$

(52,738

)

Mortgage-backed securities

 

560,752

 

 

 

(43,438

)

 

 

4,518

 

 

 

(490

)

 

 

565,270

 

 

 

(43,928

)

CMO/REMIC

 

773,501

 

 

 

(44,778

)

 

 

-

 

 

 

-

 

 

 

773,501

 

 

 

(44,778

)

Municipal bonds

 

178,881

 

 

 

(12,670

)

 

 

58,587

 

 

 

(7,190

)

 

 

237,468

 

 

 

(19,860

)

Total held-to-maturity securities

$

1,755,434

 

 

$

(122,378

)

 

$

305,694

 

 

$

(38,926

)

 

$

2,061,128

 

 

$

(161,304

)

 

 

December 31, 2021

 

 

Less Than 12 Months

 

 

12 Months or Longer

 

 

Total

 

 

Fair Value

 

 

Gross Unrealized Holding Losses

 

 

Fair Value

 

 

Gross Unrealized Holding Losses

 

 

Fair Value

 

 

Gross Unrealized Holding Losses

 

 

(Dollars in thousands)

 

Investment securities available-for-sale:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mortgage-backed securities

$

1,465,647

 

 

$

(15,099

)

 

$

44,244

 

 

$

(806

)

 

$

1,509,891

 

 

$

(15,905

)

CMO/REMIC

 

450,393

 

 

 

(11,515

)

 

 

53,745

 

 

 

(2,468

)

 

 

504,138

 

 

 

(13,983

)

Municipal bonds

 

-

 

 

 

-

 

 

 

-

 

 

 

-

 

 

 

-

 

 

 

-

 

Total available-for-sale securities

$

1,916,040

 

 

$

(26,614

)

 

$

97,989

 

 

$

(3,274

)

 

$

2,014,029

 

 

$

(29,888

)

 

Summary of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity Mortgage-backed and CMO/REMIC securities are included in maturity categories based upon estimated average lives which incorporate estimated prepayment speeds.

 

 

March 31, 2022

 

 

Available-for-sale

 

 

Held-to-maturity

 

 

Amortized Cost

 

 

Fair Value

 

 

Amortized Cost

 

 

Fair Value

 

 

 

 

 

(Dollars in thousands)

 

 

 

 

Due in one year or less

$

14,945

 

 

$

14,963

 

 

$

9,188

 

 

$

9,044

 

Due after one year through five years

 

1,270,685

 

 

 

1,220,048

 

 

 

628,543

 

 

 

601,064

 

Due after five years through ten years

 

1,904,250

 

 

 

1,782,675

 

 

 

537,429

 

 

 

503,542

 

Due after ten years

 

660,844

 

 

 

629,644

 

 

 

1,187,581

 

 

 

1,089,494

 

Total investment securities

$

3,850,724

 

 

$

3,647,330

 

 

$

2,362,741

 

 

$

2,203,144