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Securities (Tables)
6 Months Ended
Jun. 30, 2026
Securities  
Schedule of amortized cost and fair values of securities, with gross unrealized gains and losses

Amortized

Unrealized

Unrealized

Allowance for

Fair

(In thousands)

  ​ ​ ​

Cost

  ​ ​ ​

Gains

  ​ ​ ​

Losses

  ​ ​ ​

Credit Losses

  ​ ​ ​

Value

Available-for-sale securities:

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

June 30, 2026:

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

U.S. Treasury securities

$

6,006

$

$

(46)

$

$

5,960

U.S. Government Agency securities

 

1,000

 

 

(107)

 

 

893

Municipal securities

 

16,335

 

 

(2,381)

 

(666)

 

13,288

Mortgage-backed securities and collateralized mortgage obligations

 

10,263

 

 

(990)

 

 

9,273

Corporate securities

 

5,763

 

9

 

(70)

 

 

5,702

$

39,367

$

9

$

(3,594)

$

(666)

$

35,116

December 31, 2025:

 

  ​

 

  ​

 

  ​

 

  ​

 

  ​

U.S. Treasury securities

$

14,775

$

36

$

(16)

$

$

14,795

U.S. Government Agency securities

 

1,000

 

 

(100)

 

 

900

Municipal securities

 

16,406

 

3

 

(2,364)

 

(518)

 

13,527

Mortgage-backed securities and collateralized mortgage obligations

 

11,796

 

10

 

(891)

 

 

10,915

Corporate securities

 

8,608

 

12

 

(122)

 

 

8,498

$

52,585

$

61

$

(3,493)

$

(518)

$

48,635

Schedule of amortized cost and fair value of debt securities based on the contractual maturity

  ​ ​ ​

June 30, 2026

  ​ ​ ​

December 31, 2025

Amortized

Fair

Amortized

Fair

(In thousands)

  ​ ​ ​

Cost

  ​ ​ ​

Value

  ​ ​ ​

Cost

  ​ ​ ​

Value

Due in one year or less

$

4,767

$

4,098

$

14,434

$

13,868

Due after one year through five years

 

12,899

 

12,076

 

13,866

 

13,185

Due after five years through ten years

 

8,469

 

7,350

 

9,056

 

7,986

Due after ten years

 

2,969

 

2,319

 

3,433

 

2,681

Mortgage-backed securities and collateralized mortgage obligations

 

10,263

 

9,273

 

11,796

 

10,915

$

39,367

$

35,116

$

52,585

$

48,635

Schedule of securities with gross unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position

  ​ ​ ​

Less than Twelve Months

  ​ ​ ​

Twelve Months and Greater

Gross

Gross

Unrealized

Fair

Unrealized

Fair

(In thousands)

  ​ ​ ​

Losses

  ​ ​ ​

Value

  ​ ​ ​

Losses

  ​ ​ ​

Value

June 30, 2026:

 

  ​

 

  ​

 

  ​

 

  ​

U.S. Treasury securities

$

(46)

$

5,960

$

U.S. Government Agency securities

 

 

 

(107)

 

893

Municipal securities

 

(5)

 

1,133

 

(2,376)

 

11,214

Mortgage-backed securities and collateralized mortgage obligations

 

(83)

 

4,895

 

(907)

 

4,378

Corporate securities

 

 

 

(70)

 

2,745

$

(134)

$

11,988

$

(3,460)

$

19,230

December 31, 2025:

 

  ​

 

  ​

 

  ​

 

  ​

U.S. Treasury securities

$

(1)

$

996

$

(15)

$

2,984

U.S. Government Agency securities

 

 

 

(100)

 

900

Municipal securities

 

(1)

 

1,025

 

(2,363)

 

11,300

Mortgage-backed securities and collateralized mortgage obligations

 

(32)

 

3,871

 

(859)

 

5,359

Corporate securities

 

 

 

(122)

 

5,718

$

(34)

$

5,892

$

(3,459)

$

26,261

Schedule of allowance for credit losses on available-for-sale debt securities

(In thousands)

  ​ ​ ​

Municipal Securities

June 30, 2026:

 

  ​

Balance, beginning of period

$

518

Provision for credit losses, not previously recorded

 

148

Balance, end of period

$

666

June 30, 2025:

 

  ​

Balance, beginning of period

$

498

Provision for credit losses, not previously recorded

 

Balance, end of period

$

498