Note 5 - Loans - Summary of Impaired Loans (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
12 Months Ended |
Sep. 30, 2020 |
Sep. 30, 2020 |
Dec. 31, 2019 |
| Recorded investment, with no allowance |
$ 67,578
|
$ 67,578
|
$ 19,183
|
| Unpaid principal balance, with no allowance |
77,367
|
77,367
|
20,831
|
| Average recorded investment, with no allowance |
77,906
|
78,592
|
21,184
|
| Interest income recognized in period, with no allowance |
602
|
2,131
|
1,308
|
| Average recorded investment, with no allowance |
77,906
|
78,592
|
21,184
|
| Recorded investment, with an allowance |
26,185
|
26,185
|
23,965
|
| Unpaid principal balance, with an allowance |
26,642
|
26,642
|
34,584
|
| Related allowance |
9,600
|
9,600
|
9,804
|
| Average recorded investment, with an allowance |
28,585
|
28,647
|
37,580
|
| Interest income recognized in period, with an allowance |
128
|
679
|
745
|
| Average recorded investment, with an allowance |
28,585
|
28,647
|
37,580
|
| Recorded investment |
93,763
|
93,763
|
43,148
|
| Unpaid principal balance |
104,009
|
104,009
|
55,415
|
| Average recorded investment |
106,491
|
107,239
|
58,764
|
| Interest income recognized in period |
730
|
2,810
|
2,053
|
| Average recorded investment |
106,491
|
107,239
|
58,764
|
| Commercial Real Estate Portfolio Segment [Member] |
|
|
|
| Recorded investment, with no allowance |
50,898
|
50,898
|
9,015
|
| Unpaid principal balance, with no allowance |
60,687
|
60,687
|
10,563
|
| Average recorded investment, with no allowance |
61,374
|
61,967
|
11,284
|
| Interest income recognized in period, with no allowance |
442
|
1,605
|
562
|
| Average recorded investment, with no allowance |
61,374
|
61,967
|
11,284
|
| Recorded investment, with an allowance |
22,902
|
22,902
|
11,828
|
| Unpaid principal balance, with an allowance |
23,169
|
23,169
|
19,307
|
| Related allowance |
9,204
|
9,204
|
6,085
|
| Average recorded investment, with an allowance |
21,648
|
22,237
|
19,714
|
| Interest income recognized in period, with an allowance |
102
|
535
|
395
|
| Average recorded investment, with an allowance |
21,648
|
22,237
|
19,714
|
| Recorded investment |
73,800
|
73,800
|
20,843
|
| Unpaid principal balance |
83,856
|
83,856
|
29,870
|
| Average recorded investment |
83,022
|
84,204
|
30,998
|
| Interest income recognized in period |
544
|
2,140
|
957
|
| Average recorded investment |
83,022
|
84,204
|
30,998
|
| Real Estate Portfolio Segment[Member] |
|
|
|
| Recorded investment, with no allowance |
16,680
|
16,680
|
7,437
|
| Unpaid principal balance, with no allowance |
16,680
|
16,680
|
7,533
|
| Average recorded investment, with no allowance |
16,532
|
16,625
|
7,837
|
| Interest income recognized in period, with no allowance |
160
|
526
|
620
|
| Average recorded investment, with no allowance |
16,532
|
16,625
|
7,837
|
| Recorded investment, with an allowance |
2,696
|
2,696
|
10,548
|
| Unpaid principal balance, with an allowance |
2,836
|
2,836
|
13,688
|
| Related allowance |
195
|
195
|
3,633
|
| Average recorded investment, with an allowance |
5,983
|
5,398
|
16,252
|
| Interest income recognized in period, with an allowance |
26
|
144
|
323
|
| Average recorded investment, with an allowance |
5,983
|
5,398
|
16,252
|
| Recorded investment |
19,376
|
19,376
|
17,985
|
| Unpaid principal balance |
19,516
|
19,516
|
21,221
|
| Average recorded investment |
22,515
|
22,023
|
24,089
|
| Interest income recognized in period |
186
|
670
|
943
|
| Average recorded investment |
22,515
|
22,023
|
24,089
|
| Real Estate Portfolio Segment[Member] | Construction Loans [Member] |
|
|
|
| Recorded investment, with no allowance |
0
|
0
|
2,731
|
| Unpaid principal balance, with no allowance |
0
|
0
|
2,735
|
| Average recorded investment, with no allowance |
0
|
0
|
2,063
|
| Interest income recognized in period, with no allowance |
0
|
0
|
126
|
| Average recorded investment, with no allowance |
0
|
0
|
2,063
|
| Recorded investment, with an allowance |
587
|
587
|
1,589
|
| Unpaid principal balance, with an allowance |
637
|
637
|
1,589
|
| Related allowance |
201
|
201
|
86
|
| Average recorded investment, with an allowance |
954
|
1,012
|
1,614
|
| Interest income recognized in period, with an allowance |
0
|
0
|
27
|
| Average recorded investment, with an allowance |
954
|
1,012
|
1,614
|
| Recorded investment |
587
|
587
|
4,320
|
| Unpaid principal balance |
637
|
637
|
4,324
|
| Average recorded investment |
954
|
1,012
|
3,677
|
| Interest income recognized in period |
0
|
0
|
153
|
| Average recorded investment |
954
|
1,012
|
3,677
|
| Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member] |
|
|
|
| Recorded investment, with no allowance |
1,581
|
1,581
|
7,150
|
| Unpaid principal balance, with no allowance |
1,581
|
1,581
|
7,246
|
| Average recorded investment, with no allowance |
1,582
|
1,600
|
7,548
|
| Interest income recognized in period, with no allowance |
12
|
52
|
618
|
| Average recorded investment, with no allowance |
1,582
|
1,600
|
7,548
|
| Recorded investment, with an allowance |
1,252
|
1,252
|
7,888
|
| Unpaid principal balance, with an allowance |
1,392
|
1,392
|
11,028
|
| Related allowance |
146
|
146
|
2,456
|
| Average recorded investment, with an allowance |
4,563
|
3,915
|
13,627
|
| Interest income recognized in period, with an allowance |
3
|
97
|
301
|
| Average recorded investment, with an allowance |
4,563
|
3,915
|
13,627
|
| Recorded investment |
2,833
|
2,833
|
15,038
|
| Unpaid principal balance |
2,973
|
2,973
|
18,274
|
| Average recorded investment |
6,145
|
5,515
|
21,175
|
| Interest income recognized in period |
15
|
149
|
919
|
| Average recorded investment |
6,145
|
5,515
|
21,175
|
| Real Estate Portfolio Segment[Member] | One to Four Family [Member] |
|
|
|
| Recorded investment, with no allowance |
2,899
|
2,899
|
287
|
| Unpaid principal balance, with no allowance |
2,899
|
2,899
|
287
|
| Average recorded investment, with no allowance |
2,882
|
2,814
|
289
|
| Interest income recognized in period, with no allowance |
26
|
78
|
2
|
| Average recorded investment, with no allowance |
2,882
|
2,814
|
289
|
| Recorded investment, with an allowance |
412
|
412
|
1,153
|
| Unpaid principal balance, with an allowance |
412
|
412
|
1,153
|
| Related allowance |
49
|
49
|
176
|
| Average recorded investment, with an allowance |
398
|
406
|
1,157
|
| Average recorded investment, with an allowance |
398
|
406
|
1,157
|
| Interest income recognized in period, with an allowance |
12
|
12
|
1
|
| Recorded investment |
3,311
|
3,311
|
1,440
|
| Unpaid principal balance |
3,311
|
3,311
|
1,440
|
| Average recorded investment |
3,280
|
3,220
|
1,446
|
| Interest income recognized in period |
38
|
90
|
3
|
| Average recorded investment |
3,280
|
3,220
|
1,446
|
| Real Estate Portfolio Segment[Member] | Other Mortgages [Member] |
|
|
|
| Recorded investment, with no allowance |
12,200
|
12,200
|
0
|
| Unpaid principal balance, with no allowance |
12,200
|
12,200
|
0
|
| Average recorded investment, with no allowance |
12,068
|
12,211
|
0
|
| Interest income recognized in period, with no allowance |
122
|
396
|
0
|
| Average recorded investment, with no allowance |
12,068
|
12,211
|
0
|
| Recorded investment, with an allowance |
1,032
|
1,032
|
1,507
|
| Unpaid principal balance, with an allowance |
1,032
|
1,032
|
1,507
|
| Related allowance |
0
|
0
|
1,001
|
| Average recorded investment, with an allowance |
1,022
|
1,077
|
1,468
|
| Interest income recognized in period, with an allowance |
11
|
35
|
21
|
| Average recorded investment, with an allowance |
1,022
|
1,077
|
1,468
|
| Recorded investment |
13,232
|
13,232
|
1,507
|
| Unpaid principal balance |
13,232
|
13,232
|
1,507
|
| Average recorded investment |
13,090
|
13,288
|
1,468
|
| Interest income recognized in period |
133
|
431
|
21
|
| Average recorded investment |
13,090
|
13,288
|
1,468
|
| Consumer Portfolio Segment [Member] |
|
|
|
| Recorded investment, with no allowance |
0
|
0
|
0
|
| Unpaid principal balance, with no allowance |
0
|
0
|
0
|
| Average recorded investment, with no allowance |
0
|
0
|
0
|
| Interest income recognized in period, with no allowance |
0
|
0
|
0
|
| Average recorded investment, with no allowance |
0
|
0
|
0
|
| Recorded investment, with an allowance |
0
|
0
|
0
|
| Unpaid principal balance, with an allowance |
0
|
0
|
0
|
| Related allowance |
0
|
0
|
0
|
| Average recorded investment, with an allowance |
0
|
0
|
0
|
| Interest income recognized in period, with an allowance |
0
|
0
|
0
|
| Average recorded investment, with an allowance |
0
|
0
|
0
|
| Recorded investment |
0
|
0
|
0
|
| Unpaid principal balance |
0
|
0
|
0
|
| Average recorded investment |
0
|
0
|
0
|
| Interest income recognized in period |
0
|
0
|
0
|
| Average recorded investment |
$ 0
|
$ 0
|
$ 0
|