| Debt Securities, Available-for-Sale [Table Text Block] |
| December 31, 2023 |
|
U.S. Treasuries |
|
|
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 |
|
$ |
2,973 |
|
|
$ |
— |
|
|
$ |
1,292 |
|
|
$ |
— |
|
|
$ |
— |
|
|
$ |
4,265 |
|
| 1 to 5 years |
|
|
— |
|
|
|
4,769 |
|
|
|
1,461 |
|
|
|
8,976 |
|
|
|
12,919 |
|
|
|
28,125 |
|
| 5 to 10 years |
|
|
— |
|
|
|
4,337 |
|
|
|
882 |
|
|
|
19,777 |
|
|
|
9,756 |
|
|
|
34,752 |
|
| After 10 years |
|
|
— |
|
|
|
— |
|
|
|
9,935 |
|
|
|
1,598 |
|
|
|
3,460 |
|
|
|
14,993 |
|
| Fair value |
|
$ |
2,973 |
|
|
$ |
9,106 |
|
|
$ |
13,570 |
|
|
$ |
30,351 |
|
|
$ |
26,135 |
|
|
$ |
82,135 |
|
| Gross unrealized gains |
|
|
— |
|
|
|
— |
|
|
|
1 |
|
|
|
— |
|
|
|
— |
|
|
|
1 |
|
| Gross unrealized losses |
|
|
(22 |
) |
|
|
(1,128 |
) |
|
|
(1,882 |
) |
|
|
(4,533 |
) |
|
|
(3,938 |
) |
|
|
(11,503 |
) |
| Amortized cost |
|
$ |
2,995 |
|
|
$ |
10,234 |
|
|
$ |
15,451 |
|
|
$ |
34,884 |
|
|
$ |
30,073 |
|
|
$ |
93,637 |
|
| December 31, 2022 |
|
U.S. Treasuries |
|
|
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 |
|
$ |
2,433 |
|
|
$ |
1,007 |
|
|
$ |
528 |
|
|
$ |
— |
|
|
$ |
— |
|
|
$ |
3,968 |
|
| 1 to 5 years |
|
|
4,855 |
|
|
|
11,511 |
|
|
|
5,394 |
|
|
|
20,033 |
|
|
|
22,809 |
|
|
|
64,602 |
|
| 5 to 10 years |
|
|
— |
|
|
|
8,872 |
|
|
|
2,655 |
|
|
|
15,046 |
|
|
|
11,848 |
|
|
|
38,421 |
|
| After 10 years |
|
|
— |
|
|
|
— |
|
|
|
11,060 |
|
|
|
659 |
|
|
|
2,495 |
|
|
|
14,214 |
|
| Fair value |
|
$ |
7,288 |
|
|
$ |
21,390 |
|
|
$ |
19,637 |
|
|
$ |
35,738 |
|
|
$ |
37,152 |
|
|
$ |
121,205 |
|
| Gross unrealized gains |
|
|
— |
|
|
|
— |
|
|
|
6 |
|
|
|
— |
|
|
|
— |
|
|
|
6 |
|
| Gross unrealized losses |
|
|
(155 |
) |
|
|
(1,870 |
) |
|
|
(2,972 |
) |
|
|
(5,464 |
) |
|
|
(5,105 |
) |
|
|
(15,566 |
) |
| Amortized cost |
|
$ |
7,443 |
|
|
$ |
23,260 |
|
|
$ |
22,603 |
|
|
$ |
41,202 |
|
|
$ |
42,257 |
|
|
$ |
136,765 |
|
|
| Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
| |
|
Less than 12 Months |
|
|
12 Months or Longer |
|
|
Total |
|
| |
|
Fair |
|
|
Unrealized |
|
|
Fair |
|
|
Unrealized |
|
|
Fair |
|
|
Unrealized |
|
| December 31, 2023 |
|
Value |
|
|
Losses |
|
|
Value |
|
|
Losses |
|
|
Value |
|
|
Losses |
|
| |
|
|
(Dollars in thousands) |
| U.S. Treasuries |
|
$ |
— |
|
|
$ |
— |
|
|
$ |
2,973 |
|
|
$ |
22 |
|
|
$ |
2,973 |
|
|
$ |
22 |
|
| U.S. government agency obligations |
|
|
— |
|
|
|
— |
|
|
|
9,106 |
|
|
|
1,128 |
|
|
|
9,106 |
|
|
|
1,128 |
|
| Municipal obligations |
|
|
279 |
|
|
|
1 |
|
|
|
12,796 |
|
|
|
1,881 |
|
|
|
13,075 |
|
|
|
1,882 |
|
| Mortgage-backed residential obligations |
|
|
— |
|
|
|
— |
|
|
|
30,351 |
|
|
|
4,533 |
|
|
|
30,351 |
|
|
|
4,533 |
|
| Collateralized mortgage obligations |
|
|
— |
|
|
|
— |
|
|
|
26,135 |
|
|
|
3,938 |
|
|
|
26,135 |
|
|
|
3,938 |
|
| Total |
|
$ |
279 |
|
|
$ |
1 |
|
|
$ |
81,361 |
|
|
$ |
11,502 |
|
|
$ |
81,640 |
|
|
$ |
11,503 |
|
| December 31, 2022 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| U.S. Treasuries |
|
$ |
7,288 |
|
|
$ |
155 |
|
|
$ |
— |
|
|
$ |
— |
|
|
$ |
7,288 |
|
|
$ |
155 |
|
| U.S. government agency obligations |
|
|
17,274 |
|
|
|
1,296 |
|
|
|
4,116 |
|
|
|
574 |
|
|
|
21,390 |
|
|
|
1,870 |
|
| Municipal obligations |
|
|
16,823 |
|
|
|
2,349 |
|
|
|
2,037 |
|
|
|
623 |
|
|
|
18,860 |
|
|
|
2,972 |
|
| Mortgage-backed residential obligations |
|
|
14,365 |
|
|
|
1,618 |
|
|
|
21,373 |
|
|
|
3,846 |
|
|
|
35,738 |
|
|
|
5,464 |
|
| Collateralized mortgage obligations |
|
|
21,449 |
|
|
|
2,014 |
|
|
|
15,703 |
|
|
|
3,091 |
|
|
|
37,152 |
|
|
|
5,105 |
|
| Total |
|
$ |
77,199 |
|
|
$ |
7,432 |
|
|
$ |
43,229 |
|
|
$ |
8,134 |
|
|
$ |
120,428 |
|
|
$ |
15,566 |
|
|