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Loans and Allowance - Credit Quality of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | $ 1,762,033 |
2020 | 3,113,823 |
2019 | 1,054,421 |
2018 | 543,522 |
2017 | 429,625 |
Prior | 789,175 |
Revolving loans amortized cost basis | 1,428,446 |
Revolving loans converted to term | 205 |
Loans | 9,121,250 | $ 9,243,174
Commercial Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 7,000,298
Commercial Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 334,989
Commercial Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 234,712
Commercial Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Commercial Loss |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Consumer Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 1,666,062
Consumer Non-Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 7,113
PPP loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 302,000 |
2020 | 113,800 |
Loans | 415,800 | 667,100
Commercial and industrial loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 716,339 |
2020 | 715,128 |
2019 | 227,245 |
2018 | 90,802 |
2017 | 37,661 |
Prior | 64,562 |
Revolving loans amortized cost basis | 819,339 |
Revolving loans converted to term | 0 |
Loans | 2,671,076 | 2,776,699
Commercial and industrial loans | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 705,017 |
2020 | 680,616 |
2019 | 220,134 |
2018 | 88,941 |
2017 | 35,001 |
Prior | 61,402 |
Revolving loans amortized cost basis | 764,492 |
Revolving loans converted to term | 0 |
Loans | 2,555,603 |
Commercial and industrial loans | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 8,826 |
2020 | 31,372 |
2019 | 963 |
2018 | 1,214 |
2017 | 2,315 |
Prior | 2,299 |
Revolving loans amortized cost basis | 17,494 |
Revolving loans converted to term | 0 |
Loans | 64,483 |
Commercial and industrial loans | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 2,496 |
2020 | 3,140 |
2019 | 6,148 |
2018 | 647 |
2017 | 345 |
Prior | 861 |
Revolving loans amortized cost basis | 37,353 |
Revolving loans converted to term | 0 |
Loans | 50,990 |
Commercial and industrial loans | Commercial Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 2,562,077
Commercial and industrial loans | Commercial Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 117,503
Commercial and industrial loans | Commercial Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 97,119
Commercial and industrial loans | Commercial Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Commercial and industrial loans | Commercial Loss |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Commercial and industrial loans | Consumer Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Commercial and industrial loans | Consumer Non-Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Agricultural land, production and other loans to farmers |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 30,158 |
2020 | 56,631 |
2019 | 24,737 |
2018 | 12,653 |
2017 | 7,693 |
Prior | 47,297 |
Revolving loans amortized cost basis | 55,851 |
Revolving loans converted to term | 0 |
Loans | 235,020 | 281,884
Agricultural land, production and other loans to farmers | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 29,307 |
2020 | 53,177 |
2019 | 24,414 |
2018 | 10,441 |
2017 | 7,291 |
Prior | 43,426 |
Revolving loans amortized cost basis | 50,668 |
Revolving loans converted to term | 0 |
Loans | 218,724 |
Agricultural land, production and other loans to farmers | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 132 |
2020 | 1,561 |
2019 | 186 |
2018 | 480 |
2017 | 0 |
Prior | 392 |
Revolving loans amortized cost basis | 1,572 |
Revolving loans converted to term | 0 |
Loans | 4,323 |
Agricultural land, production and other loans to farmers | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 719 |
2020 | 1,893 |
2019 | 137 |
2018 | 1,732 |
2017 | 402 |
Prior | 3,479 |
Revolving loans amortized cost basis | 3,611 |
Revolving loans converted to term | 0 |
Loans | 11,973 |
Agricultural land, production and other loans to farmers | Commercial Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 243,991
Agricultural land, production and other loans to farmers | Commercial Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 26,835
Agricultural land, production and other loans to farmers | Commercial Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 9,885
Agricultural land, production and other loans to farmers | Commercial Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Agricultural land, production and other loans to farmers | Commercial Loss |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Agricultural land, production and other loans to farmers | Consumer Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 1,173
Agricultural land, production and other loans to farmers | Consumer Non-Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 87,073 |
2020 | 190,757 |
2019 | 140,397 |
2018 | 49,491 |
2017 | 3,031 |
Prior | 2,789 |
Revolving loans amortized cost basis | 17,662 |
Revolving loans converted to term | 0 |
Loans | 491,200 | 484,723
Construction | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 87,073 |
2020 | 190,362 |
2019 | 140,397 |
2018 | 49,429 |
2017 | 3,031 |
Prior | 2,788 |
Revolving loans amortized cost basis | 17,622 |
Revolving loans converted to term |  |
Loans | 490,702 |
Construction | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 0 |
2020 | 367 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 40 |
Revolving loans converted to term | 0 |
Loans | 407 |
Construction | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 0 |
2020 | 28 |
2019 | 0 |
2018 | 62 |
2017 | 0 |
Prior | 1 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Loans | 91 |
Construction | Commercial Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 446,846
Construction | Commercial Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 10,445
Construction | Commercial Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 5,549
Construction | Commercial Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Construction | Commercial Loss |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Construction | Consumer Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 21,763
Construction | Consumer Non-Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 120
Commercial real estate, non-owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 379,924 |
2020 | 1,029,928 |
2019 | 299,706 |
2018 | 193,952 |
2017 | 142,072 |
Prior | 187,897 |
Revolving loans amortized cost basis | 30,018 |
Revolving loans converted to term | 0 |
Loans | 2,263,497 | 2,220,949
Commercial real estate, non-owner occupied | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 320,351 |
2020 | 829,716 |
2019 | 276,030 |
2018 | 181,489 |
2017 | 134,569 |
Prior | 177,499 |
Revolving loans amortized cost basis | 28,768 |
Revolving loans converted to term | 0 |
Loans | 1,948,422 |
Commercial real estate, non-owner occupied | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 53,576 |
2020 | 161,095 |
2019 | 0 |
2018 | 10,333 |
2017 | 0 |
Prior | 10,098 |
Revolving loans amortized cost basis | 1,250 |
Revolving loans converted to term | 0 |
Loans | 236,352 |
Commercial real estate, non-owner occupied | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 5,997 |
2020 | 39,117 |
2019 | 23,676 |
2018 | 2,130 |
2017 | 7,503 |
Prior | 300 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Loans | 78,723 |
Commercial real estate, non-owner occupied | Commercial Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 1,979,827
Commercial real estate, non-owner occupied | Commercial Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 160,304
Commercial real estate, non-owner occupied | Commercial Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 80,818
Commercial real estate, non-owner occupied | Commercial Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Commercial real estate, non-owner occupied | Commercial Loss |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Commercial real estate, non-owner occupied | Consumer Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Commercial real estate, non-owner occupied | Consumer Non-Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Commercial real estate, owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 155,906 |
2020 | 461,527 |
2019 | 113,066 |
2018 | 50,488 |
2017 | 58,035 |
Prior | 78,733 |
Revolving loans amortized cost basis | 35,746 |
Revolving loans converted to term | 0 |
Loans | 953,501 | 958,501
Commercial real estate, owner occupied | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 154,390 |
2020 | 444,147 |
2019 | 110,496 |
2018 | 48,809 |
2017 | 53,093 |
Prior | 75,210 |
Revolving loans amortized cost basis | 35,589 |
Revolving loans converted to term | 0 |
Loans | 921,734 |
Commercial real estate, owner occupied | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 562 |
2020 | 5,813 |
2019 | 2,570 |
2018 | 1,626 |
2017 | 2,208 |
Prior | 1,748 |
Revolving loans amortized cost basis | 157 |
Revolving loans converted to term | 0 |
Loans | 14,684 |
Commercial real estate, owner occupied | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 954 |
2020 | 11,567 |
2019 | 0 |
2018 | 53 |
2017 | 2,734 |
Prior | 1,775 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Loans | 17,083 |
Commercial real estate, owner occupied | Commercial Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 907,566
Commercial real estate, owner occupied | Commercial Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 17,641
Commercial real estate, owner occupied | Commercial Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 33,294
Commercial real estate, owner occupied | Commercial Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  |
Commercial real estate, owner occupied | Commercial Loss |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  |
Commercial real estate, owner occupied | Consumer Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Commercial real estate, owner occupied | Consumer Non-Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 164,340 |
2020 | 415,586 |
2019 | 124,703 |
2018 | 88,165 |
2017 | 67,304 |
Prior | 263,302 |
Revolving loans amortized cost basis | 4,008 |
Revolving loans converted to term | 34 |
Loans | 1,127,442 | 1,234,741
Residential | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 162,624 |
2020 | 411,016 |
2019 | 124,377 |
2018 | 86,116 |
2017 | 67,041 |
Prior | 258,010 |
Revolving loans amortized cost basis | 3,919 |
Revolving loans converted to term | 34 |
Loans | 1,113,137 |
Residential | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 282 |
2020 | 1,322 |
2019 | 219 |
2018 | 657 |
2017 | 60 |
Prior | 1,152 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Loans | 3,692 |
Residential | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 1,434 |
2020 | 3,248 |
2019 | 107 |
2018 | 1,392 |
2017 | 203 |
Prior | 4,140 |
Revolving loans amortized cost basis | 89 |
Revolving loans converted to term | 0 |
Loans | 10,613 |
Residential | Commercial Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 199,338
Residential | Commercial Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 2,261
Residential | Commercial Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 7,058
Residential | Commercial Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Residential | Commercial Loss |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Residential | Consumer Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 1,020,687
Residential | Consumer Non-Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 5,397
Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 24,632 |
2020 | 20,741 |
2019 | 2,313 |
2018 | 2,549 |
2017 | 1,703 |
Prior | 4,926 |
Revolving loans amortized cost basis | 432,962 |
Revolving loans converted to term | 171 |
Loans | 489,997 | 508,259
Home equity | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 24,144 |
2020 | 20,741 |
2019 | 2,313 |
2018 | 2,530 |
2017 | 1,605 |
Prior | 4,689 |
Revolving loans amortized cost basis | 430,070 |
Revolving loans converted to term | 171 |
Loans | 486,263 |
Home equity | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 0 |
2020 | 0 |
2019 | 0 |
2018 | 9 |
2017 | 0 |
Prior | 59 |
Revolving loans amortized cost basis | 1,888 |
Revolving loans converted to term | 0 |
Loans | 1,956 |
Home equity | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 488 |
2020 | 0 |
2019 | 0 |
2018 | 10 |
2017 | 98 |
Prior | 178 |
Revolving loans amortized cost basis | 1,004 |
Revolving loans converted to term | 0 |
Loans | 1,778 |
Home equity | Commercial Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 12,714
Home equity | Commercial Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Home equity | Commercial Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 989
Home equity | Commercial Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Home equity | Commercial Loss |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Home equity | Consumer Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 492,999
Home equity | Consumer Non-Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 1,557
Individuals' loans for household and other personal expenditures |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 31,107 |
2020 | 34,435 |
2019 | 20,736 |
2018 | 15,747 |
2017 | 3,449 |
Prior | 6,383 |
Revolving loans amortized cost basis | 18,962 |
Revolving loans converted to term | 0 |
Loans | 130,819 | 129,479
Individuals' loans for household and other personal expenditures | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 31,102 |
2020 | 34,212 |
2019 | 20,548 |
2018 | 15,707 |
2017 | 3,433 |
Prior | 6,358 |
Revolving loans amortized cost basis | 17,855 |
Revolving loans converted to term | 0 |
Loans | 129,215 |
Individuals' loans for household and other personal expenditures | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 5 |
2020 | 223 |
2019 | 188 |
2018 | 40 |
2017 | 16 |
Prior | 25 |
Revolving loans amortized cost basis | 1,107 |
Revolving loans converted to term | 0 |
Loans | 1,604 |
Individuals' loans for household and other personal expenditures | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 0 |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Loans | 0 |
Individuals' loans for household and other personal expenditures | Commercial Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Individuals' loans for household and other personal expenditures | Commercial Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Individuals' loans for household and other personal expenditures | Commercial Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Individuals' loans for household and other personal expenditures | Commercial Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Individuals' loans for household and other personal expenditures | Commercial Loss |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Individuals' loans for household and other personal expenditures | Consumer Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 129,440
Individuals' loans for household and other personal expenditures | Consumer Non-Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 39
Public finance and other commercial loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 172,554 |
2020 | 189,090 |
2019 | 101,518 |
2018 | 39,675 |
2017 | 108,677 |
Prior | 133,286 |
Revolving loans amortized cost basis | 13,898 |
Revolving loans converted to term | 0 |
Loans | 758,698 | 647,939
Public finance and other commercial loans | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
2021 | 172,554 |
2020 | 189,090 |
2019 | 101,518 |
2018 | 39,675 |
2017 | 108,677 |
Prior | 133,286 |
Revolving loans amortized cost basis | 13,898 |
Revolving loans converted to term | 0 |
Loans | $ 758,698 |
Public finance and other commercial loans | Commercial Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 647,939
Public finance and other commercial loans | Commercial Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Public finance and other commercial loans | Commercial Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Public finance and other commercial loans | Commercial Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Public finance and other commercial loans | Commercial Loss |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Public finance and other commercial loans | Consumer Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | 0
Public finance and other commercial loans | Consumer Non-Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans |  | $ 0

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