| Debt Securities, Available-for-Sale [Table Text Block] |
| June 30, 2025 |
|
U.S. government agency obligations |
|
|
Municipal obligations |
|
|
Mortgage-backed residential obligations |
|
|
Collateralized mortgage obligations |
|
|
Total available-for-sale |
|
| |
|
(Dollars in thousands) |
|
| 1 year or less |
|
$ |
— |
|
|
$ |
79 |
|
|
$ |
— |
|
|
$ |
879 |
|
|
$ |
958 |
|
| 1 to 5 years |
|
|
3,015 |
|
|
|
1,311 |
|
|
|
8,244 |
|
|
|
14,225 |
|
|
|
26,795 |
|
| 5 to 10 years |
|
|
4,677 |
|
|
|
2,780 |
|
|
|
16,265 |
|
|
|
8,941 |
|
|
|
32,663 |
|
| After 10 years |
|
|
— |
|
|
|
7,400 |
|
|
|
576 |
|
|
|
1,196 |
|
|
|
9,172 |
|
| Fair value |
|
|
7,692 |
|
|
|
11,570 |
|
|
|
25,085 |
|
|
|
25,241 |
|
|
|
69,588 |
|
| Gross unrealized gains |
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
| Gross unrealized losses |
|
|
(799 |
) |
|
|
(2,428 |
) |
|
|
(3,629 |
) |
|
|
(2,975 |
) |
|
|
(9,831 |
) |
| Amortized cost |
|
$ |
8,491 |
|
|
$ |
13,998 |
|
|
$ |
28,714 |
|
|
$ |
28,216 |
|
|
$ |
79,419 |
|
| December 31, 2024 |
|
U.S. government agency obligations |
|
|
Municipal obligations |
|
|
Mortgage-backed residential obligations |
|
|
Collateralized mortgage obligations |
|
|
Total available-for-sale |
|
| |
|
(Dollars in thousands) |
|
| 1 year or less |
|
$ |
1,000 |
|
|
$ |
— |
|
|
$ |
— |
|
|
$ |
— |
|
|
$ |
1,000 |
|
| 1 to 5 years |
|
|
3,047 |
|
|
|
1,452 |
|
|
|
8,971 |
|
|
|
15,086 |
|
|
|
28,556 |
|
| 5 to 10 years |
|
|
4,610 |
|
|
|
2,401 |
|
|
|
15,794 |
|
|
|
7,786 |
|
|
|
30,591 |
|
| After 10 years |
|
|
— |
|
|
|
7,883 |
|
|
|
1,150 |
|
|
|
2,069 |
|
|
|
11,102 |
|
| Fair value |
|
|
8,657 |
|
|
|
11,736 |
|
|
|
25,915 |
|
|
|
24,941 |
|
|
|
71,249 |
|
| Gross unrealized gains |
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
| Gross unrealized losses |
|
|
(1,062 |
) |
|
|
(2,367 |
) |
|
|
(4,766 |
) |
|
|
(3,842 |
) |
|
|
(12,037 |
) |
| Amortized cost |
|
$ |
9,719 |
|
|
$ |
14,103 |
|
|
$ |
30,681 |
|
|
$ |
28,783 |
|
|
$ |
83,286 |
|
|
| Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
| |
|
Less than 12 Months |
|
|
12 Months or Longer |
|
|
Total |
|
| |
|
(Dollars in thousands) |
|
| |
|
Fair |
|
|
Unrealized |
|
|
Fair |
|
|
Unrealized |
|
|
Fair |
|
|
Unrealized |
|
| |
|
Value |
|
|
Losses |
|
|
Value |
|
|
Losses |
|
|
Value |
|
|
Losses |
|
| June 30, 2025 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| U.S. government agency obligations |
|
$ |
— |
|
|
$ |
— |
|
|
$ |
7,692 |
|
|
$ |
799 |
|
|
$ |
7,692 |
|
|
$ |
799 |
|
| Municipal obligations |
|
|
— |
|
|
|
— |
|
|
|
11,570 |
|
|
|
2,428 |
|
|
|
11,570 |
|
|
|
2,428 |
|
| Mortgage-backed residential obligations |
|
|
— |
|
|
|
— |
|
|
|
25,085 |
|
|
|
3,629 |
|
|
|
25,085 |
|
|
|
3,629 |
|
| Collateralized mortgage obligations |
|
|
— |
|
|
|
— |
|
|
|
25,241 |
|
|
|
2,975 |
|
|
|
25,241 |
|
|
|
2,975 |
|
| Total |
|
$ |
— |
|
|
$ |
— |
|
|
$ |
69,588 |
|
|
$ |
9,831 |
|
|
$ |
69,588 |
|
|
$ |
9,831 |
|
| December 31, 2024 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| U.S. government agency obligations |
|
$ |
— |
|
|
$ |
— |
|
|
$ |
8,657 |
|
|
$ |
1,062 |
|
|
$ |
8,657 |
|
|
$ |
1,062 |
|
| Municipal obligations |
|
|
467 |
|
|
|
28 |
|
|
|
11,269 |
|
|
|
2,339 |
|
|
|
11,736 |
|
|
|
2,367 |
|
| Mortgage-backed residential obligations |
|
|
— |
|
|
|
— |
|
|
|
25,915 |
|
|
|
4,766 |
|
|
|
25,915 |
|
|
|
4,766 |
|
| Collateralized mortgage obligations |
|
|
— |
|
|
|
— |
|
|
|
24,941 |
|
|
|
3,842 |
|
|
|
24,941 |
|
|
|
3,842 |
|
| Total |
|
$ |
467 |
|
|
$ |
28 |
|
|
$ |
70,782 |
|
|
$ |
12,009 |
|
|
$ |
71,249 |
|
|
$ |
12,037 |
|
|