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Loans and Allowance - Schedule of Risk Grading of Loan Portfolio by Loan Class (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 $ 776,878 $ 3,023,847
2021 2,766,737 2,456,983
2020 2,211,749 778,086
2019 645,722 359,554
2018 343,932 353,319
Prior 837,648 605,794
Revolving loans amortized cost basis 1,773,532 1,664,006
Revolving loans converted to term 43 272
Loans 9,356,241 9,241,861
PPP loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 48,500 100,300
2021 155,000 6,300
Loans 48,700 106,600
Commercial and industrial loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 233,645 1,033,127
2021 877,074 375,587
2020 303,246 152,142
2019 129,515 68,827
2018 65,202 23,936
Prior 51,918 32,992
Revolving loans amortized cost basis 1,166,060 1,027,954
Revolving loans converted to term 0 0
Loans 2,826,660 2,714,565
Commercial and industrial loans | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 233,494 1,019,757
2021 860,644 362,372
2020 292,449 144,520
2019 127,655 65,165
2018 64,212 21,575
Prior 48,840 30,420
Revolving loans amortized cost basis 1,124,742 990,335
Revolving loans converted to term 0 0
Loans 2,752,036 2,634,144
Commercial and industrial loans | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 83 10,559
2021 13,199 11,088
2020 8,914 190
2019 196 730
2018 911 1,930
Prior 1,967 1,825
Revolving loans amortized cost basis 21,206 15,026
Revolving loans converted to term 0 0
Loans 46,476 41,348
Commercial and industrial loans | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 68 2,811
2021 2,665 2,127
2020 1,883 7,432
2019 1,664 2,932
2018 79 431
Prior 1,111 747
Revolving loans amortized cost basis 20,112 22,593
Revolving loans converted to term 0 0
Loans 27,582 39,073
Commercial and industrial loans | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 0  
2021 566  
2020 0  
2019 0  
2018 0  
Prior 0  
Revolving loans amortized cost basis 0  
Revolving loans converted to term 0  
Loans 566  
Agricultural land, production and other loans to farmers    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 13,604 50,775
2021 45,415 47,213
2020 46,417 22,303
2019 20,294 8,060
2018 7,451 6,153
Prior 37,753 36,353
Revolving loans amortized cost basis 38,143 75,585
Revolving loans converted to term 0 0
Loans 209,077 246,442
Agricultural land, production and other loans to farmers | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 13,604 50,251
2021 45,415 45,164
2020 44,372 22,195
2019 20,250 7,689
2018 7,270 6,153
Prior 37,478 36,074
Revolving loans amortized cost basis 38,054 74,871
Revolving loans converted to term 0 0
Loans 206,443 242,397
Agricultural land, production and other loans to farmers | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 0 0
2021 0 1,543
2020 1,543 0
2019 0 0
2018 0 0
Prior 248 252
Revolving loans amortized cost basis 89 264
Revolving loans converted to term 0 0
Loans 1,880 2,059
Agricultural land, production and other loans to farmers | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 0 524
2021 0 506
2020 502 108
2019 44 371
2018 181 0
Prior 27 27
Revolving loans amortized cost basis 0 450
Revolving loans converted to term 0 0
Loans 754 1,986
Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 97,621 235,904
2021 234,844 201,132
2020 170,144 63,589
2019 25,825 979
2018 958 1,762
Prior 4,704 2,499
Revolving loans amortized cost basis 18,879 17,201
Revolving loans converted to term 0 0
Loans 552,975 523,066
Construction | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 93,208 215,167
2021 234,844 200,169
2020 169,386 63,589
2019 25,825 979
2018 958 1,762
Prior 4,681 2,453
Revolving loans amortized cost basis 18,879 17,201
Revolving loans converted to term 0 0
Loans 547,781 501,320
Construction | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 4,398 20,737
2021 0 270
2020 0 0
2019 0 0
2018 0 0
Prior 0 46
Revolving loans amortized cost basis 0 0
Revolving loans converted to term 0 0
Loans 4,398 21,053
Construction | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 15 0
2021 0 693
2020 758 0
2019 0 0
2018 0 0
Prior 23 0
Revolving loans amortized cost basis 0 0
Revolving loans converted to term 0 0
Loans 796 693
Commercial real estate, non-owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 159,108 676,889
2021 627,638 852,798
2020 779,343 227,510
2019 177,577 113,089
2018 110,253 109,556
Prior 188,743 128,838
Revolving loans amortized cost basis 30,535 26,779
Revolving loans converted to term 0 0
Loans 2,073,197 2,135,459
Commercial real estate, non-owner occupied | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 123,966 589,296
2021 528,861 688,406
2020 627,820 227,332
2019 177,465 111,971
2018 109,147 103,400
Prior 186,777 126,837
Revolving loans amortized cost basis 30,535 26,779
Revolving loans converted to term 0 0
Loans 1,784,571 1,874,021
Commercial real estate, non-owner occupied | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 35,142 68,279
2021 75,275 149,480
2020 144,704 0
2019 0 0
2018 0 0
Prior 1,696 1,723
Revolving loans amortized cost basis 0 0
Revolving loans converted to term 0 0
Loans 256,817 219,482
Commercial real estate, non-owner occupied | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 0 19,314
2021 23,502 14,912
2020 6,819 178
2019 112 1,118
2018 1,106 6,156
Prior 270 278
Revolving loans amortized cost basis 0 0
Revolving loans converted to term 0 0
Loans 31,809 41,956
Commercial real estate, owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 64,107 311,876
2021 297,872 404,099
2020 366,263 93,076
2019 84,597 44,837
2018 43,660 47,059
Prior 81,457 51,626
Revolving loans amortized cost basis 36,565 34,147
Revolving loans converted to term 0 0
Loans 974,521 986,720
Commercial real estate, owner occupied | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 60,735 299,186
2021 288,076 392,383
2020 353,021 92,338
2019 83,799 43,252
2018 42,142 46,044
Prior 78,463 48,571
Revolving loans amortized cost basis 36,565 33,998
Revolving loans converted to term 0 0
Loans 942,801 955,772
Commercial real estate, owner occupied | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 229 5,665
2021 5,575 5,953
2020 7,858 738
2019 798 1,532
2018 1,518 902
Prior 1,965 1,301
Revolving loans amortized cost basis 0 149
Revolving loans converted to term 0 0
Loans 17,943 16,240
Commercial real estate, owner occupied | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 3,143 7,025
2021 4,221 5,763
2020 5,384 0
2019 0 53
2018 0 113
Prior 1,029 1,754
Revolving loans amortized cost basis 0 0
Revolving loans converted to term 0 0
Loans 13,777 14,708
Residential    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 129,670 351,764
2021 347,070 356,660
2020 333,814 104,819
2019 96,522 71,299
2018 66,894 55,520
Prior 249,534 216,032
Revolving loans amortized cost basis 3,163 2,955
Revolving loans converted to term 28 78
Loans 1,226,695 1,159,127
Residential | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 129,643 349,726
2021 344,654 353,691
2020 331,532 103,028
2019 95,511 69,745
2018 64,998 55,240
Prior 244,562 210,669
Revolving loans amortized cost basis 3,158 2,955
Revolving loans converted to term 13 73
Loans 1,214,071 1,145,127
Residential | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 27 1,034
2021 1,140 1,394
2020 741 1,456
2019 695 306
2018 572 172
Prior 1,601 2,106
Revolving loans amortized cost basis 0 0
Revolving loans converted to term 15 0
Loans 4,791 6,468
Residential | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 0 1,004
2021 1,276 1,575
2020 1,541 335
2019 316 1,248
2018 1,324 108
Prior 3,371 3,257
Revolving loans amortized cost basis 5 0
Revolving loans converted to term 0 5
Loans 7,833 7,532
Home equity    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 4,535 64,365
2021 56,212 17,641
2020 15,591 2,025
2019 1,904 2,135
2018 1,919 1,341
Prior 4,344 3,526
Revolving loans amortized cost basis 428,121 432,527
Revolving loans converted to term 15 194
Loans 512,641 523,754
Home equity | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 4,403 63,845
2021 55,867 17,556
2020 15,465 1,977
2019 1,857 2,127
2018 1,884 1,250
Prior 4,171 3,432
Revolving loans amortized cost basis 423,635 427,437
Revolving loans converted to term 15 194
Loans 507,297 517,818
Home equity | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 0 0
2021 0 85
2020 42 48
2019 47 0
2018 27 0
Prior 2 24
Revolving loans amortized cost basis 2,863 3,451
Revolving loans converted to term 0 0
Loans 2,981 3,608
Home equity | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 132 520
2021 345 0
2020 84 0
2019 0 8
2018 8 91
Prior 171 70
Revolving loans amortized cost basis 1,623 1,639
Revolving loans converted to term 0 0
Loans 2,363 2,328
Individuals' loans for household and other personal expenditures    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 19,629 67,828
2021 57,936 23,537
2020 20,485 11,943
2019 9,553 11,230
2018 9,030 2,028
Prior 6,077 4,986
Revolving loans amortized cost basis 24,883 24,540
Revolving loans converted to term 0 0
Loans 147,593 146,092
Individuals' loans for household and other personal expenditures | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 19,616 67,749
2021 57,759 23,452
2020 20,371 11,893
2019 9,519 11,197
2018 8,947 2,008
Prior 6,024 4,928
Revolving loans amortized cost basis 24,836 24,406
Revolving loans converted to term 0 0
Loans 147,072 145,633
Individuals' loans for household and other personal expenditures | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 13 79
2021 176 85
2020 113 50
2019 34 33
2018 83 20
Prior 53 58
Revolving loans amortized cost basis 47 134
Revolving loans converted to term 0 0
Loans 519 459
Individuals' loans for household and other personal expenditures | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 0  
2021 1  
2020 1  
2019 0  
2018 0  
Prior 0  
Revolving loans amortized cost basis 0  
Revolving loans converted to term 0  
Loans 2  
Public finance and other commercial loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 54,959 231,319
2021 222,676 178,316
2020 176,446 100,679
2019 99,935 39,098
2018 38,565 105,964
Prior 213,118 128,942
Revolving loans amortized cost basis 27,183 22,318
Revolving loans converted to term 0 0
Loans 832,882 806,636
Public finance and other commercial loans | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2022 54,959 231,319
2021 222,676 178,316
2020 176,446 100,679
2019 99,935 39,098
2018 38,565 105,964
Prior 213,118 128,942
Revolving loans amortized cost basis 27,183 22,318
Revolving loans converted to term 0 0
Loans $ 832,882 $ 806,636