Loans Receivable and the Allowance for Credit Losses - Loans by Credit Quality Indicator (Details) - USD ($)
$ in Thousands |
Mar. 31, 2021 |
Dec. 31, 2020 |
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
$ 378,268
|
$ 1,695,721
|
| 2020 |
1,441,089
|
414,610
|
| 2019 |
370,251
|
256,008
|
| 2018 |
198,973
|
226,020
|
| 2017 |
204,232
|
177,553
|
| Prior |
417,643
|
318,557
|
| Revolving Loans |
347,705
|
393,754
|
| Loans, gross |
3,358,161
|
3,482,223
|
| Agricultural |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
24,372
|
26,804
|
| 2020 |
18,620
|
8,692
|
| 2019 |
7,700
|
3,139
|
| 2018 |
2,483
|
2,436
|
| 2017 |
2,060
|
2,060
|
| Prior |
4,155
|
3,163
|
| Revolving Loans |
57,709
|
70,098
|
| Loans, gross |
117,099
|
116,392
|
| Commercial and industrial |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
140,935
|
554,595
|
| 2020 |
399,940
|
107,634
|
| 2019 |
93,818
|
58,480
|
| 2018 |
48,775
|
64,671
|
| 2017 |
62,418
|
39,767
|
| Prior |
131,274
|
95,902
|
| Revolving Loans |
116,610
|
134,439
|
| Loans, gross |
993,770
|
1,055,488
|
| Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| Loans, gross |
1,693,592
|
1,732,361
|
| Residential real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| Loans, gross |
474,433
|
499,106
|
| Consumer |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
12,390
|
30,757
|
| 2020 |
26,546
|
13,683
|
| 2019 |
11,187
|
10,354
|
| 2018 |
9,037
|
4,965
|
| 2017 |
4,116
|
2,669
|
| Prior |
5,741
|
6,330
|
| Revolving Loans |
10,250
|
10,118
|
| Loans, gross |
79,267
|
78,876
|
| Performing |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
52,367
|
168,496
|
| 2020 |
144,435
|
68,216
|
| 2019 |
57,182
|
65,356
|
| 2018 |
56,169
|
41,740
|
| 2017 |
37,573
|
43,530
|
| Prior |
108,662
|
80,161
|
| Revolving Loans |
94,122
|
107,162
|
| Loans, gross |
550,510
|
574,661
|
| Performing | Consumer |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
12,390
|
30,755
|
| 2020 |
26,540
|
13,662
|
| 2019 |
11,168
|
10,341
|
| 2018 |
9,026
|
4,960
|
| 2017 |
4,108
|
2,656
|
| Prior |
5,707
|
6,306
|
| Revolving Loans |
10,250
|
10,118
|
| Loans, gross |
79,189
|
78,798
|
| Nonperforming |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
499
|
248
|
| 2020 |
256
|
22
|
| 2019 |
163
|
832
|
| 2018 |
557
|
325
|
| 2017 |
250
|
277
|
| Prior |
1,314
|
1,447
|
| Revolving Loans |
151
|
170
|
| Loans, gross |
3,190
|
3,321
|
| Nonperforming | Consumer |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
2
|
| 2020 |
6
|
21
|
| 2019 |
19
|
13
|
| 2018 |
11
|
5
|
| 2017 |
8
|
13
|
| Prior |
34
|
24
|
| Revolving Loans |
0
|
0
|
| Loans, gross |
78
|
78
|
| Pass [Member] |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
309,478
|
1,374,858
|
| 2020 |
1,175,644
|
311,856
|
| 2019 |
281,542
|
163,152
|
| 2018 |
116,397
|
171,183
|
| 2017 |
153,967
|
125,708
|
| Prior |
286,042
|
219,517
|
| Revolving Loans |
239,148
|
261,769
|
| Loans, gross |
2,562,218
|
2,628,043
|
| Pass [Member] | Agricultural |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
21,063
|
17,836
|
| 2020 |
13,560
|
6,959
|
| 2019 |
6,123
|
2,764
|
| 2018 |
2,169
|
2,145
|
| 2017 |
1,796
|
1,386
|
| Prior |
2,501
|
1,833
|
| Revolving Loans |
51,726
|
60,802
|
| Loans, gross |
98,938
|
93,725
|
| Pass [Member] | Commercial and industrial |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
137,814
|
546,171
|
| 2020 |
393,679
|
105,523
|
| 2019 |
91,939
|
57,055
|
| 2018 |
47,502
|
61,753
|
| 2017 |
59,720
|
38,695
|
| Prior |
127,324
|
92,526
|
| Revolving Loans |
108,875
|
120,498
|
| Loans, gross |
966,853
|
1,022,221
|
| Special mention / watch |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
10,743
|
88,719
|
| 2020 |
66,053
|
21,406
|
| 2019 |
13,175
|
14,506
|
| 2018 |
14,824
|
8,982
|
| 2017 |
8,866
|
5,349
|
| Prior |
6,416
|
5,790
|
| Revolving Loans |
9,975
|
12,461
|
| Loans, gross |
130,052
|
157,213
|
| Special mention / watch | Agricultural |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
1,485
|
4,892
|
| 2020 |
3,259
|
1,083
|
| 2019 |
1,066
|
117
|
| 2018 |
75
|
108
|
| 2017 |
94
|
553
|
| Prior |
1,326
|
1,103
|
| Revolving Loans |
4,680
|
7,210
|
| Loans, gross |
11,985
|
15,066
|
| Special mention / watch | Commercial and industrial |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
2,029
|
3,410
|
| 2020 |
2,821
|
572
|
| 2019 |
501
|
497
|
| 2018 |
412
|
2,261
|
| 2017 |
2,233
|
611
|
| Prior |
259
|
112
|
| Revolving Loans |
4,865
|
4,796
|
| Loans, gross |
13,120
|
12,259
|
| Substandard [Member] |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
5,181
|
63,399
|
| 2020 |
54,700
|
13,110
|
| 2019 |
18,189
|
12,162
|
| 2018 |
11,026
|
3,789
|
| 2017 |
3,575
|
2,689
|
| Prior |
15,205
|
11,638
|
| Revolving Loans |
4,308
|
12,191
|
| Loans, gross |
112,184
|
118,978
|
| Substandard [Member] | Agricultural |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
1,824
|
4,075
|
| 2020 |
1,800
|
650
|
| 2019 |
511
|
258
|
| 2018 |
239
|
183
|
| 2017 |
170
|
121
|
| Prior |
327
|
226
|
| Revolving Loans |
1,303
|
2,086
|
| Loans, gross |
6,174
|
7,599
|
| Substandard [Member] | Commercial and industrial |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
1,092
|
5,014
|
| 2020 |
3,440
|
1,539
|
| 2019 |
1,378
|
928
|
| 2018 |
861
|
656
|
| 2017 |
464
|
461
|
| Prior |
3,688
|
3,261
|
| Revolving Loans |
2,869
|
9,144
|
| Loans, gross |
13,792
|
21,003
|
| Doubtful |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
1
|
| 2020 |
1
|
0
|
| 2019 |
0
|
0
|
| 2018 |
0
|
1
|
| 2017 |
1
|
0
|
| Prior |
4
|
4
|
| Revolving Loans |
1
|
1
|
| Loans, gross |
7
|
7
|
| Doubtful | Agricultural |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
1
|
| 2020 |
1
|
0
|
| 2019 |
0
|
0
|
| 2018 |
0
|
0
|
| 2017 |
0
|
0
|
| Prior |
1
|
1
|
| Revolving Loans |
0
|
0
|
| Loans, gross |
2
|
2
|
| Doubtful | Commercial and industrial |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
0
|
| 2020 |
0
|
0
|
| 2019 |
0
|
0
|
| 2018 |
0
|
1
|
| 2017 |
1
|
0
|
| Prior |
3
|
3
|
| Revolving Loans |
1
|
1
|
| Loans, gross |
5
|
5
|
| Construction & development | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
13,493
|
111,325
|
| 2020 |
86,390
|
27,402
|
| 2019 |
25,365
|
15,756
|
| 2018 |
11,189
|
2,696
|
| 2017 |
1,994
|
688
|
| Prior |
1,376
|
905
|
| Revolving Loans |
25,120
|
22,519
|
| Loans, gross |
164,927
|
181,291
|
| Construction & development | Pass [Member] | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
13,493
|
109,885
|
| 2020 |
84,966
|
25,972
|
| 2019 |
23,974
|
14,994
|
| 2018 |
10,652
|
2,696
|
| 2017 |
1,994
|
679
|
| Prior |
1,344
|
876
|
| Revolving Loans |
25,120
|
22,519
|
| Loans, gross |
161,543
|
177,621
|
| Construction & development | Special mention / watch | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
843
|
| 2020 |
835
|
298
|
| 2019 |
294
|
542
|
| 2018 |
537
|
0
|
| 2017 |
0
|
9
|
| Prior |
8
|
3
|
| Revolving Loans |
0
|
0
|
| Loans, gross |
1,674
|
1,695
|
| Construction & development | Substandard [Member] | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
597
|
| 2020 |
589
|
1,132
|
| 2019 |
1,097
|
220
|
| 2018 |
0
|
0
|
| 2017 |
0
|
0
|
| Prior |
24
|
26
|
| Revolving Loans |
0
|
0
|
| Loans, gross |
1,710
|
1,975
|
| Construction & development | Doubtful | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
0
|
| 2020 |
0
|
0
|
| 2019 |
0
|
0
|
| 2018 |
0
|
0
|
| 2017 |
0
|
0
|
| Prior |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Loans, gross |
0
|
0
|
| Farmland | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
14,127
|
60,390
|
| 2020 |
54,595
|
32,232
|
| 2019 |
28,259
|
14,898
|
| 2018 |
10,904
|
12,878
|
| 2017 |
9,910
|
8,905
|
| Prior |
18,730
|
14,368
|
| Revolving Loans |
1,674
|
1,299
|
| Loans, gross |
138,199
|
144,970
|
| Farmland | Pass [Member] | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
11,922
|
48,378
|
| 2020 |
45,736
|
25,022
|
| 2019 |
21,226
|
9,577
|
| 2018 |
6,170
|
10,490
|
| 2017 |
7,527
|
8,378
|
| Prior |
16,130
|
13,003
|
| Revolving Loans |
1,499
|
1,263
|
| Loans, gross |
110,210
|
116,111
|
| Farmland | Special mention / watch | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
2,113
|
8,088
|
| 2020 |
5,349
|
4,583
|
| 2019 |
4,582
|
935
|
| 2018 |
1,039
|
660
|
| 2017 |
656
|
361
|
| Prior |
236
|
237
|
| Revolving Loans |
148
|
0
|
| Loans, gross |
14,123
|
14,864
|
| Farmland | Substandard [Member] | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
92
|
3,924
|
| 2020 |
3,510
|
2,627
|
| 2019 |
2,451
|
4,386
|
| 2018 |
3,695
|
1,728
|
| 2017 |
1,727
|
166
|
| Prior |
2,364
|
1,128
|
| Revolving Loans |
27
|
36
|
| Loans, gross |
13,866
|
13,995
|
| Farmland | Doubtful | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
0
|
| 2020 |
0
|
0
|
| 2019 |
0
|
0
|
| 2018 |
0
|
0
|
| 2017 |
0
|
0
|
| Prior |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Loans, gross |
0
|
0
|
| Multifamily | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
41,991
|
166,261
|
| 2020 |
153,063
|
18,992
|
| 2019 |
18,241
|
17,805
|
| 2018 |
3,888
|
10,706
|
| 2017 |
8,644
|
11,622
|
| Prior |
25,093
|
19,581
|
| Revolving Loans |
10,886
|
11,558
|
| Loans, gross |
261,806
|
256,525
|
| Multifamily | Pass [Member] | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
41,991
|
164,817
|
| 2020 |
151,623
|
18,992
|
| 2019 |
18,241
|
17,805
|
| 2018 |
3,888
|
10,706
|
| 2017 |
8,644
|
10,201
|
| Prior |
23,693
|
19,581
|
| Revolving Loans |
10,886
|
11,558
|
| Loans, gross |
258,966
|
253,660
|
| Multifamily | Special mention / watch | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
345
|
| 2020 |
344
|
0
|
| 2019 |
0
|
0
|
| 2018 |
0
|
0
|
| 2017 |
0
|
59
|
| Prior |
51
|
0
|
| Revolving Loans |
0
|
0
|
| Loans, gross |
395
|
404
|
| Multifamily | Substandard [Member] | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
1,099
|
| 2020 |
1,096
|
0
|
| 2019 |
0
|
0
|
| 2018 |
0
|
0
|
| 2017 |
0
|
1,362
|
| Prior |
1,349
|
0
|
| Revolving Loans |
0
|
0
|
| Loans, gross |
2,445
|
2,461
|
| Multifamily | Doubtful | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
0
|
| 2020 |
0
|
0
|
| 2019 |
0
|
0
|
| 2018 |
0
|
0
|
| 2017 |
0
|
0
|
| Prior |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Loans, gross |
0
|
0
|
| Commercial real estate-other | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
90,484
|
607,602
|
| 2020 |
583,790
|
151,420
|
| 2019 |
139,523
|
79,742
|
| 2018 |
65,008
|
90,568
|
| 2017 |
81,383
|
70,704
|
| Prior |
127,039
|
103,030
|
| Revolving Loans |
41,433
|
46,509
|
| Loans, gross |
1,128,660
|
1,149,575
|
| Commercial real estate-other | Pass [Member] | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
83,195
|
487,771
|
| 2020 |
486,080
|
129,388
|
| 2019 |
120,039
|
60,957
|
| 2018 |
46,016
|
83,393
|
| 2017 |
74,286
|
66,369
|
| Prior |
115,050
|
91,698
|
| Revolving Loans |
41,042
|
45,129
|
| Loans, gross |
965,708
|
964,705
|
| Commercial real estate-other | Special mention / watch | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
5,116
|
71,141
|
| 2020 |
53,445
|
14,870
|
| 2019 |
6,732
|
12,415
|
| 2018 |
12,761
|
5,953
|
| 2017 |
5,883
|
3,756
|
| Prior |
4,536
|
4,335
|
| Revolving Loans |
282
|
455
|
| Loans, gross |
88,755
|
112,925
|
| Commercial real estate-other | Substandard [Member] | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
2,173
|
48,690
|
| 2020 |
44,265
|
7,162
|
| 2019 |
12,752
|
6,370
|
| 2018 |
6,231
|
1,222
|
| 2017 |
1,214
|
579
|
| Prior |
7,453
|
6,997
|
| Revolving Loans |
109
|
925
|
| Loans, gross |
74,197
|
71,945
|
| Commercial real estate-other | Doubtful | Commercial real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
0
|
| 2020 |
0
|
0
|
| 2019 |
0
|
0
|
| 2018 |
0
|
0
|
| 2017 |
0
|
0
|
| Prior |
0
|
0
|
| Revolving Loans |
0
|
0
|
| Loans, gross |
0
|
0
|
| One- to four- family first liens | Residential real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
28,648
|
118,162
|
| 2020 |
100,291
|
46,582
|
| 2019 |
39,402
|
43,471
|
| 2018 |
37,411
|
30,931
|
| 2017 |
28,050
|
37,555
|
| Prior |
96,322
|
69,734
|
| Revolving Loans |
7,284
|
9,249
|
| Loans, gross |
337,408
|
355,684
|
| One- to four- family first liens | Performing | Residential real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
28,149
|
117,923
|
| 2020 |
100,073
|
46,581
|
| 2019 |
39,401
|
42,875
|
| 2018 |
37,074
|
30,628
|
| 2017 |
27,824
|
37,407
|
| Prior |
95,272
|
68,501
|
| Revolving Loans |
7,284
|
9,249
|
| Loans, gross |
335,077
|
353,164
|
| One- to four- family first liens | Nonperforming | Residential real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
499
|
239
|
| 2020 |
218
|
1
|
| 2019 |
1
|
596
|
| 2018 |
337
|
303
|
| 2017 |
226
|
148
|
| Prior |
1,050
|
1,233
|
| Revolving Loans |
0
|
0
|
| Loans, gross |
2,331
|
2,520
|
| One- to four- family junior liens | Residential real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
11,828
|
19,825
|
| 2020 |
17,854
|
7,973
|
| 2019 |
6,756
|
12,363
|
| 2018 |
10,278
|
6,169
|
| 2017 |
5,657
|
3,583
|
| Prior |
7,913
|
5,544
|
| Revolving Loans |
76,739
|
87,965
|
| Loans, gross |
137,025
|
143,422
|
| One- to four- family junior liens | Performing | Residential real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
11,828
|
19,818
|
| 2020 |
17,822
|
7,973
|
| 2019 |
6,613
|
12,140
|
| 2018 |
10,069
|
6,152
|
| 2017 |
5,641
|
3,467
|
| Prior |
7,683
|
5,354
|
| Revolving Loans |
76,588
|
87,795
|
| Loans, gross |
136,244
|
142,699
|
| One- to four- family junior liens | Nonperforming | Residential real estate |
|
|
| Financing Receivable, Recorded Investment |
|
|
| 2021 |
0
|
7
|
| 2020 |
32
|
0
|
| 2019 |
143
|
223
|
| 2018 |
209
|
17
|
| 2017 |
16
|
116
|
| Prior |
230
|
190
|
| Revolving Loans |
151
|
170
|
| Loans, gross |
$ 781
|
$ 723
|