Fair Value Measurements, Balance Sheet Grouping (Details) - USD ($)
$ in Thousands |
Mar. 31, 2018 |
Dec. 31, 2017 |
| Financial Assets [Abstract] |
|
|
| Securities available-for-sale |
$ 186,983
|
$ 199,707
|
| Loans held for sale |
127,638
|
149,896
|
| Carrying Amount [Member] |
|
|
| Financial Assets [Abstract] |
|
|
| Cash and cash equivalents |
83,407
|
48,607
|
| Securities available-for-sale |
186,983
|
199,707
|
| Loans held for sale |
127,638
|
149,896
|
| Loans receivable |
1,314,672
|
1,291,814
|
| FHLB stock |
18,675
|
16,875
|
| Accrued interest receivable |
5,197
|
4,924
|
| Mortgage servicing rights |
939
|
888
|
| Mortgage banking derivative assets |
3,299
|
2,004
|
| Financial Liabilities [Abstract] |
|
|
| Deposits |
974,224
|
967,380
|
| Advance payments by borrowers for taxes |
12,004
|
4,876
|
| Borrowings |
434,365
|
386,285
|
| Accrued interest payable |
904
|
886
|
| Mortgage banking derivative liabilities |
318
|
0
|
| Fair Value [Member] |
|
|
| Financial Assets [Abstract] |
|
|
| Cash and cash equivalents |
83,407
|
48,607
|
| Securities available-for-sale |
186,983
|
199,707
|
| Loans held for sale |
127,638
|
149,896
|
| Loans receivable |
1,287,014
|
1,291,142
|
| FHLB stock |
18,675
|
16,875
|
| Accrued interest receivable |
5,197
|
4,924
|
| Mortgage servicing rights |
1,350
|
1,125
|
| Mortgage banking derivative assets |
3,299
|
2,004
|
| Financial Liabilities [Abstract] |
|
|
| Deposits |
973,730
|
967,558
|
| Advance payments by borrowers for taxes |
12,004
|
4,876
|
| Borrowings |
431,172
|
384,348
|
| Accrued interest payable |
904
|
886
|
| Mortgage banking derivative liabilities |
318
|
0
|
| Fair Value [Member] | Level 1 [Member] |
|
|
| Financial Assets [Abstract] |
|
|
| Cash and cash equivalents |
80,407
|
39,607
|
| Securities available-for-sale |
0
|
0
|
| Loans held for sale |
0
|
0
|
| Loans receivable |
0
|
0
|
| FHLB stock |
0
|
0
|
| Accrued interest receivable |
5,197
|
4,924
|
| Mortgage servicing rights |
0
|
0
|
| Mortgage banking derivative assets |
0
|
0
|
| Financial Liabilities [Abstract] |
|
|
| Deposits |
277,026
|
278,401
|
| Advance payments by borrowers for taxes |
12,004
|
4,876
|
| Borrowings |
0
|
0
|
| Accrued interest payable |
904
|
886
|
| Mortgage banking derivative liabilities |
0
|
0
|
| Fair Value [Member] | Level 2 [Member] |
|
|
| Financial Assets [Abstract] |
|
|
| Cash and cash equivalents |
3,000
|
9,000
|
| Securities available-for-sale |
186,983
|
199,707
|
| Loans held for sale |
127,638
|
149,896
|
| Loans receivable |
0
|
0
|
| FHLB stock |
18,675
|
16,875
|
| Accrued interest receivable |
0
|
0
|
| Mortgage servicing rights |
0
|
0
|
| Mortgage banking derivative assets |
0
|
0
|
| Financial Liabilities [Abstract] |
|
|
| Deposits |
696,704
|
689,157
|
| Advance payments by borrowers for taxes |
0
|
0
|
| Borrowings |
431,172
|
384,348
|
| Accrued interest payable |
0
|
0
|
| Mortgage banking derivative liabilities |
0
|
0
|
| Fair Value [Member] | Level 3 [Member] |
|
|
| Financial Assets [Abstract] |
|
|
| Cash and cash equivalents |
0
|
0
|
| Securities available-for-sale |
0
|
0
|
| Loans held for sale |
0
|
0
|
| Loans receivable |
1,287,014
|
1,291,142
|
| FHLB stock |
0
|
0
|
| Accrued interest receivable |
0
|
0
|
| Mortgage servicing rights |
1,350
|
1,125
|
| Mortgage banking derivative assets |
3,299
|
2,004
|
| Financial Liabilities [Abstract] |
|
|
| Deposits |
0
|
0
|
| Advance payments by borrowers for taxes |
0
|
0
|
| Borrowings |
0
|
0
|
| Accrued interest payable |
0
|
0
|
| Mortgage banking derivative liabilities |
$ 318
|
$ 0
|