Note 3 - Loans - Summary of Impaired Loans (Details) - USD ($)
$ in Thousands |
12 Months Ended |
Dec. 31, 2018 |
Dec. 31, 2017 |
| Recorded investment, with no allowance |
$ 14,423
|
$ 16,296
|
| Unpaid principal balance, with no allowance |
14,610
|
23,069
|
| Average recorded investment, with no allowance |
15,110
|
23,013
|
| Interest income recognized in period, with no allowance |
658
|
901
|
| Interest income recognized in period, with no allowance |
658
|
901
|
| Recorded investment, with an allowance |
24,168
|
24,214
|
| Unpaid principal balance, with an allowance |
31,929
|
24,795
|
| Related allowance |
8,128
|
5,609
|
| Average recorded investment, with an allowance |
27,901
|
25,727
|
| Interest income recognized in period, with an allowance |
848
|
1,059
|
| Recorded investment |
38,591
|
40,510
|
| Unpaid principal balance |
46,539
|
47,864
|
| Average recorded investment |
43,011
|
48,740
|
| Interest income recognized in period |
1,506
|
1,960
|
| Commercial Real Estate Portfolio Segment [Member] |
|
|
| Recorded investment, with no allowance |
6,064
|
10,036
|
| Unpaid principal balance, with no allowance |
6,064
|
16,639
|
| Average recorded investment, with no allowance |
6,142
|
16,417
|
| Interest income recognized in period, with no allowance |
237
|
571
|
| Interest income recognized in period, with no allowance |
237
|
571
|
| Recorded investment, with an allowance |
12,380
|
16,411
|
| Unpaid principal balance, with an allowance |
20,141
|
16,992
|
| Related allowance |
6,066
|
4,276
|
| Average recorded investment, with an allowance |
15,918
|
17,912
|
| Interest income recognized in period, with an allowance |
462
|
651
|
| Recorded investment |
18,444
|
26,447
|
| Unpaid principal balance |
26,205
|
33,631
|
| Average recorded investment |
22,060
|
34,329
|
| Interest income recognized in period |
699
|
1,222
|
| Real Estate Portfolio Segment[Member] |
|
|
| Recorded investment, with no allowance |
7,895
|
5,648
|
| Unpaid principal balance, with no allowance |
8,079
|
5,814
|
| Average recorded investment, with no allowance |
8,444
|
5,891
|
| Interest income recognized in period, with no allowance |
393
|
296
|
| Interest income recognized in period, with no allowance |
393
|
296
|
| Recorded investment, with an allowance |
10,742
|
6,756
|
| Unpaid principal balance, with an allowance |
10,742
|
6,756
|
| Related allowance |
1,887
|
1,163
|
| Average recorded investment, with an allowance |
10,937
|
6,776
|
| Interest income recognized in period, with an allowance |
352
|
349
|
| Recorded investment |
18,637
|
12,404
|
| Unpaid principal balance |
18,821
|
12,570
|
| Average recorded investment |
19,381
|
12,667
|
| Interest income recognized in period |
745
|
645
|
| Real Estate Portfolio Segment[Member] | Construction Loans [Member] |
|
|
| Recorded investment, with no allowance |
464
|
574
|
| Unpaid principal balance, with no allowance |
467
|
577
|
| Average recorded investment, with no allowance |
524
|
663
|
| Interest income recognized in period, with no allowance |
28
|
31
|
| Interest income recognized in period, with no allowance |
28
|
31
|
| Recorded investment, with an allowance |
997
|
997
|
| Unpaid principal balance, with an allowance |
997
|
997
|
| Related allowance |
126
|
120
|
| Average recorded investment, with an allowance |
997
|
997
|
| Interest income recognized in period, with an allowance |
31
|
56
|
| Recorded investment |
1,461
|
1,571
|
| Unpaid principal balance |
1,464
|
1,574
|
| Average recorded investment |
1,521
|
1,660
|
| Interest income recognized in period |
59
|
87
|
| Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member] |
|
|
| Recorded investment, with no allowance |
1,763
|
2,640
|
| Unpaid principal balance, with no allowance |
1,947
|
2,806
|
| Average recorded investment, with no allowance |
2,223
|
2,875
|
| Interest income recognized in period, with no allowance |
120
|
159
|
| Interest income recognized in period, with no allowance |
120
|
159
|
| Recorded investment, with an allowance |
3,358
|
3,914
|
| Unpaid principal balance, with an allowance |
3,358
|
3,914
|
| Related allowance |
99
|
601
|
| Average recorded investment, with an allowance |
3,364
|
3,801
|
| Interest income recognized in period, with an allowance |
105
|
215
|
| Recorded investment |
5,121
|
6,554
|
| Unpaid principal balance |
5,305
|
6,720
|
| Average recorded investment |
5,587
|
6,676
|
| Interest income recognized in period |
225
|
374
|
| Real Estate Portfolio Segment[Member] | One to Four Family [Member] |
|
|
| Recorded investment, with no allowance |
1,071
|
2,262
|
| Unpaid principal balance, with no allowance |
1,071
|
2,262
|
| Average recorded investment, with no allowance |
1,088
|
2,289
|
| Interest income recognized in period, with no allowance |
21
|
93
|
| Interest income recognized in period, with no allowance |
21
|
93
|
| Recorded investment, with an allowance |
975
|
980
|
| Unpaid principal balance, with an allowance |
975
|
980
|
| Related allowance |
208
|
281
|
| Average recorded investment, with an allowance |
975
|
1,113
|
| Interest income recognized in period, with an allowance |
30
|
54
|
| Recorded investment |
2,046
|
3,242
|
| Unpaid principal balance |
2,046
|
3,242
|
| Average recorded investment |
2,063
|
3,402
|
| Interest income recognized in period |
51
|
147
|
| Real Estate Portfolio Segment[Member] | Other Mortgages [Member] |
|
|
| Recorded investment, with no allowance |
5,061
|
746
|
| Unpaid principal balance, with no allowance |
5,061
|
746
|
| Average recorded investment, with no allowance |
5,133
|
727
|
| Interest income recognized in period, with no allowance |
252
|
44
|
| Interest income recognized in period, with no allowance |
252
|
44
|
| Recorded investment, with an allowance |
6,409
|
1,862
|
| Unpaid principal balance, with an allowance |
6,409
|
1,862
|
| Related allowance |
1,580
|
281
|
| Average recorded investment, with an allowance |
6,598
|
1,862
|
| Interest income recognized in period, with an allowance |
217
|
80
|
| Recorded investment |
11,470
|
2,608
|
| Unpaid principal balance |
11,470
|
2,608
|
| Average recorded investment |
11,731
|
2,589
|
| Interest income recognized in period |
469
|
124
|
| Consumer Portfolio Segment [Member] |
|
|
| Recorded investment, with no allowance |
|
38
|
| Unpaid principal balance, with no allowance |
|
39
|
| Average recorded investment, with no allowance |
|
42
|
| Interest income recognized in period, with no allowance |
|
3
|
| Interest income recognized in period, with no allowance |
|
3
|
| Recorded investment, with an allowance |
49
|
50
|
| Unpaid principal balance, with an allowance |
49
|
50
|
| Related allowance |
49
|
50
|
| Average recorded investment, with an allowance |
49
|
42
|
| Interest income recognized in period, with an allowance |
3
|
3
|
| Recorded investment |
49
|
88
|
| Unpaid principal balance |
49
|
89
|
| Average recorded investment |
49
|
84
|
| Interest income recognized in period |
$ 3
|
$ 6
|